JP7335605B2 - Punching device, parallel adjustment method between surface plates, and parallel adjustment member between surface plates - Google Patents

Description

TECHNICAL FIELD The present invention relates to a punching device, an inter-surface plate parallel adjustment method, and an inter-surface plate parallel adjustment member.

Conventionally, a moving surface plate and a facing surface plate are arranged facing each other in the vertical direction, a moving mechanism for vertically moving the moving surface plate toward the facing surface plate, and a control means for controlling the moving mechanism. A plurality of pressurizing units positioned at different horizontal positions on the moving surface plate are pressed toward the opposing surface plate, so that the cutting die attached to one of the moving surface plate and the opposing surface plate presses the workpiece to a predetermined position. A punching device is known which punches out to the shape of .

As a punching device of this kind, Patent Document 1 discloses that a moving mechanism has a link mechanism, and a crankshaft of the link mechanism is rotationally driven so that the link mechanism pushes up a lower movable surface plate, and a gap between the upper fixed surface plate and the A punching device is described for punching a workpiece with a die.

Patent No. 5399231

In a punching device in which the movable surface plate moves toward the opposing surface plate, there may be a gap between the facing surfaces of the movable surface plate and the opposing surface plate due to assembly errors, component errors, or repeated use during the manufacturing of the punching device. Parallelism may decrease.

In order to solve the above-described problems, the present invention provides a moving surface plate and a facing surface plate that are arranged to face each other in the vertical direction, a movement mechanism that moves the moving surface plate up and down toward the facing surface plate, and and a control means for controlling a mechanism, wherein the moving mechanism presses a plurality of pressurizing units having different horizontal positions on the moving surface plate toward the opposing surface plate, thereby controlling the moving surface plate. A punching device for punching a workpiece into a predetermined shape by means of a die attached to at least one of the die and the opposing surface plate, wherein the movable surface plate is mounted in a position where the die is attached with an inter-surface-plate parallel adjustment member. It is characterized by comprising storage means for storing positional information of stop positions of each of the plurality of pressurizing units when the moving surface plate is stopped while moving toward the facing surface plate.

According to the present invention, there is an excellent effect that the parallelism between the moving surface plate and the opposing surface plate can be corrected.

Schematic perspective view of a die cutting system. The front view of a die cutter. The upstream side view of a die cutter. The downstream side view of a die cutter. FIG. 2 is a front view of the die cutter with the front frame and the back frame hidden; The rear view of the die cutter with the front frame and the back frame hidden. FIG. 3 is a perspective view of the die cutter with the front frame and the back frame hidden. The schematic diagram of the upstream side surface of a die cutter. A block diagram of a die cutter. Schematic explanatory drawing of a raising/lowering transmission mechanism. FIG. 5 is an explanatory view showing the displacement between the lifting transmission rod and the cylindrical portion when the lifting transmission mechanism is driven so that the cylindrical portion moves from the bottom dead center to the top dead center; Explanatory drawing of a drawing height adjustment screen. FIG. 3 is a perspective explanatory view of a horizontal adjustment jig; The top view and front view of a horizontal adjustment jig. FIG. 4 is a schematic diagram of a punching part in a state in which the moving surface plate and the fixed surface plate are parallel; FIG. 4 is a schematic diagram of a punching part in a state in which the moving surface plate and the fixed surface plate are not parallel; The schematic diagram of the punching part in the state where the shim tape is stuck. Explanatory drawing of leveling adjustment using a leveling jig. The schematic diagram of the punching part in the state which adjusted the stop position of the cylindrical part.

Hereinafter, the same or equivalent constituent elements, members, and processes shown in each drawing are denoted by the same reference numerals, and duplication of description will be omitted as appropriate. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. Also, in each drawing, some of the members that are not important for explaining the embodiments are omitted.

An embodiment of a punching device according to the present invention and a punching processing system provided with this punching device will be described below.

FIG. 1 is a schematic perspective view of a die-cutting system 500, which is a punching processing system according to this embodiment.
The die cutting system 500 includes a sheet feeder 200, a registration device 300, a die cutter 100, and a discharge processing device 400 from the upstream side in the conveying direction of the sheet material to be processed.

In the die cutting system 500 , a sheet feeder 200 serving as a means for supplying a workpiece feeds a sheet material placed on a placement shelf toward the registration device 300 . The registration device 300, which is a workpiece position correcting means, corrects the inclination of the sheet material with respect to the direction parallel to the conveying direction of the sheet material (the X-axis direction in the drawing) and the sheet material in the width direction (the Y-axis direction in the drawing). position is adjusted, and the sheet material is conveyed toward the die cutter 100 . The die cutter 100, which is a punching means, temporarily stops the sheet material supplied from the registration device 300, and sandwiches the sheet material between a fixed surface plate and a movable surface plate, which will be described later in detail, to cut the sheet material into a cutting die attached to the fixed surface plate. A punching process is performed in the shape of The discharge processing device 400 includes a discharge unit that receives the sheet material punched by the die cutter 100 and discharged, and a separator that separates the punched sheet material into a product and a surplus portion. and a stacker for accumulating the delivered products.
As shown in FIG. 1, the die cutter 100 has an operation panel 101 on its upper surface.

Next, the die cutter 100 will be explained.
2 to 7 are explanatory diagrams of the die cutter 100 with the exterior cover removed. FIG. 2 is a front view of the die cutter 100. FIG. 3 is an upstream side view of the die cutter 100 seen from the right side in FIG. 2, and FIG. 4 is a downstream side view of the die cutter 100 seen from the left side in FIG. 5 is a front view of the die cutter 100 with the front frame 5 and the back frame 6 hidden from the front view of FIG. 2, and FIG. 6 shows the front frame 5 and the back frame 6 in the state shown in FIG. 2 is a rear view of the die cutter 100 with the . 7 is a perspective view of the die cutter 100 with the front frame 5 and the back frame 6 hidden.
FIG. 8 is an explanatory diagram schematically showing an upstream side view of the die cutter 100 shown in FIG.

As shown in FIGS. 2 to 7, the die cutter 100 is arranged to face a moving surface plate 1 which can move up and down with respect to the frame (5, 6, 7, etc.) of the apparatus, above the moving surface plate 1. a stationary platen 2 fixed to the frame of the apparatus.
The die cutter 100 has a frame structure made of metal, including a mount frame 7 , a front frame 5 , a back frame 6 , an upstream guide frame 21 and a downstream guide frame 23 . The gantry frame 7 has casters for movement and an anti-movement fixing mechanism. The front frame 5 and the back frame 6 are plate-shaped members, and their lower portions are fixed to the gantry frame 7 . The upstream guide frame 21 and the downstream guide frame 23 are rectangular bar-shaped members extending in the width direction of the device and having both ends fixed to the front frame 5 and the rear frame 6 .
The fixed surface plate 2 is fixed to the upper parts of the front frame 5 and the rear frame 6 . Further, as shown in FIG. 8, the cutting die 8 having the cutting blade 81 is fixed to the lower surface of the stationary platen 2 with a stainless steel plate 82 interposed therebetween. On the other hand, a face plate 9 is fixed to the upper surface of the movable platen 1 .

The die cutter 100 has four lifting transmission mechanisms 4 (4a, 4b, 4c, 4d) and four press motors 3 (3a, 3b, 3c, 3d) as moving mechanisms for moving the movable platen 1 up and down. Prepare. Four columnar portions 10 (10a, 10b, 10c, 10d) whose axial direction is parallel to the conveying direction are fixed to the lower portion of the movable platen 1 . The elevation transmission mechanism 4 has a structure of a crank mechanism that converts input rotational motion into vertical reciprocating motion. , the moving platen 1 moves vertically.
2 to 7 show a state in which all the four columnar portions 10 are positioned at the bottom dead center of the elevation transmission mechanism 4, and the moving surface plate 1 is the most from the fixed surface plate 2 in the movable range of the moving surface plate 1. It is explanatory drawing of the separated state.
FIG. 8 is an explanatory diagram showing a state in which the movable platen 1 is raised to the upper stop position and the sheet material S is punched out by the cutting blade 81 of the cutting die 8. As shown in FIG.

As shown in FIG. 3, the moving platen 1 is provided with an upstream guided shaft 11 parallel to the X-axis in the drawing and protruding upstream in the conveying direction at the widthwise central portion of the surface on the upstream side in the conveying direction. . As shown in FIG. 4, the moving platen 1 has a downstream guided shaft 12 protruding downstream in the conveying direction parallel to the X-axis in the drawing, at the center in the width direction of the surface on the downstream side in the conveying direction. Prepare. The upstream guided shaft 11 and the downstream guided shaft 12 are provided with an upstream guided bearing 11a and a downstream guided bearing 12a.

As shown in FIG. 3, the upstream guide frame 21 has an upstream guide portion 22 at the center portion in the width direction. The upstream guide portion 22 is provided with two upstream guide rails 22a that protrude downstream in the conveying direction and extend in the vertical direction so that the upstream guided bearing 11a is sandwiched between the two upstream guide rails 22a. The engagement restricts movement of the upstream guided shaft 11 in the width direction.
Further, as shown in FIG. 4 , a downstream side guide portion 24 is provided at the widthwise central portion of the downstream guide frame 23 . The downstream guide portion 24 is provided with two downstream guide rails 24a that protrude upstream in the conveying direction and extend in the vertical direction. The engagement restricts movement of the downstream guided shaft 12 in the width direction.
By restricting the movement of the upstream side guided shaft 11 and the downstream side guided shaft 12 in the width direction by the upstream side guide portion 22 and the downstream side guide portion 24, the moving surface plate 1 when the moving surface plate 1 moves up and down. can prevent displacement in the width direction.

The die cutter 100 includes a conveying belt pair (14, 15) for conveying the sheet material S to the depth side in the width direction with respect to the moving platen 1. As shown in FIG. It also has a belt drive motor 13 as a drive source for the pair of conveyor belts, and a belt drive transmission mechanism 16 for transmitting the drive force. By driving the belt drive motor 13, the lower conveying belt 14 and the upper conveying belt 15 move endlessly at the same surface moving speed, and the lower conveying belt 14 and the upper conveying belt 15 move the sheet material S in one direction in the width direction. It is transported by pinching the ends.

The lower conveying belt 14 and the upper conveying belt 15 are stretched over a plurality of tension rollers. A part of the tension rollers is arranged so as to horizontally form a surface for sandwiching the sheet material S between the upper stretching surface of the lower conveying belt 14 and the lower stretching surface of the upper conveying belt 15 . A path between the belt 14 and the conveying upper belt 15 is defined. The tension rollers forming the surfaces for sandwiching the sheet material S are supported by roller holding members that can move up and down.
When performing the punching process, the sheet material S is conveyed between the movable surface plate 1 and the fixed surface plate 2, and the lower conveying belt 14 and the upper conveying belt 15 are stopped. The moving platen 1 has a projecting portion (not shown) that protrudes to the depth side in the width direction. It is configured such that the stretched surface to be formed is lifted together with the moving platen 1 . As a result, the sheet material S to be processed can be raised toward the stationary platen 2 as the movable platen 1 rises.

As a configuration for vertically moving the sheet material S sandwiched between the conveying belt pair (14, 15), the conveying belt pair (14, 15) including the belt drive mechanism (belt drive motor 13, belt drive transmission mechanism 16). ) may be held by a vertically movable holding unit. In this case, the projecting portion of the moving surface plate 1 pushes up the holding unit that holds the pair of conveying belts including the belt drive mechanism.

FIG. 9 is a block diagram of the die cutter 100. As shown in FIG.
The control unit 30 of the die cutter 100 controls driving of the four press motors 3 (3a to 3d) and the belt drive motor 13 based on outputs from the operation panel 101 and the trailing edge detection sensor 25. FIG. In the die cutter 100 of this embodiment, the control unit 30 can independently drive and control the four press motors 3 (3a to 3d).

Next, preparation work for punching will be described.
In the sheet feeder 200, a bundle of sheet materials S to be punched is placed on a shelf.

In the die cutter 100 , the cutting die 8 is set on the stationary surface plate 2 and the face plate 9 is set on the movable surface plate 1 . When setting the cutting die 8 and the face plate 9, the ejection unit provided at the position closest to the die cutter 100 of the ejection processing device 400 is manually or electrically lowered. As a result, the exit side of the space through which the sheet material S is passed between the fixed surface plate 2 and the movable surface plate 1 is opened to allow access from the outside.

Below the stationary platen 2, there is provided a mold slide guide capable of sliding the cutting mold 8 along the transport direction. By inserting the cutting die 8 into the space below the stationary surface plate 2 from the downstream side in the conveying direction of the apparatus main body, the cutting die 8 slides toward the upstream side in the conveying direction along the mold slide guide. The cutting die 8 is inserted until the tip of the cutting die 8 in the inserting direction abuts against the die abutting plate 19, and the die fixing lever 17 is pulled down to the state shown in FIG. It is locked in a state in which it is abutted against the backing plate 19 and the cutting die 8 is abutted against the lower surface of the fixed surface plate 2.例文帳に追加Thereby, the cutting die 8 is fixed to the stationary platen 2 .

When an identifier such as a bar code for calling information about the cutting die 8 is attached to the cutting die 8, the cutting die 8 is set on the fixed surface plate 2 after reading the identifier with a reading means such as a handy scanner.

After setting the cutting die 8 and the face plate 9, the discharge unit is manually or electrically raised to a predetermined position.

Next, job setting is performed using the operation panel 101 or an external input device. The setting contents include the size of the sheet material S, the height of the cutting blade 81 of the cutting die 8, the thickness of the sheet of the cutting die 8, the number of times of punching, the reference position of the cutting die and the reference position of the sheet.
Here, the thickness of the sheet of the cutting die 8 means the stainless steel plate 82 fixed on the upper surface of the cutting die 8 and the image sheet fixed on the upper surface of the stainless steel plate 82 and on which the arrangement of the cutting blades 81 of the cutting die 8 is drawn. , and the thickness of the protective sheet covering the upper surface of the image sheet.
The cutting die 8 is inserted into and removed from the die cutter 100 in a state in which a stainless steel plate 82, an image sheet to which a shim tape is attached if necessary, and a protective sheet are laminated in this order on its upper surface.

The stainless steel plate 82 is a member that prevents the cutting edge 81 of the cutting die 8 from being pushed up by the face plate 9 and protruding from the back surface (upper surface) of the cutting die 8 . The image sheet allows confirmation of the arrangement of the cutting blades 81 of the cutting die 8, and when the position of the cutting blades 81 reveals a location where the punching pressure is insufficient, a shim tape for removing unevenness is attached to the upper surface of the image sheet. can be kept Since the protective sheet covers and protects the upper surface of the image sheet to which the shim tape for removing unevenness is attached, the shim tape for removing unevenness rubs against the lower surface of the fixed surface plate 2 when the sheet is slid to set the cutting die 8 . can be prevented from peeling off.

The above-described cutting die reference position and sheet reference position are the stopping positions of the sheet material S during the punching process where the position to be cut on the sheet material S and the position of the cutting blade 81 of the cutting die 8 match. It is a reference value entered in the job settings to ensure that
The sheet material S is stopped when a predetermined stop pulse number is acquired after the trailing edge detection sensor 25 arranged on the upstream side of the conveying belt pair (14, 15) detects the trailing edge of the sheet material S. Then, punching is performed at the stop position.
In job setting, the operator extracts an arbitrary blade reference point of the cutting blade 81 of the cutting die 8, and inputs the cutting die reference position, which is the distance from the blade reference point to the upstream end of the cutting die 8. . Further, the operator extracts a reference point to be cut corresponding to the blade reference point from among the positions to be cut on the sheet material S to be punched, and selects the sheet material S to be punched from the reference point to be cut. input the sheet reference position, which is the distance to the upstream end of the
Based on the input cutting die reference position and sheet reference position, the control unit 30 sets the stop pulse number so that the sheet material S stops at the stop position where the blade reference point and the cutting target reference point coincide. Calculate and set. By this process, the cutting edge 81 of the cutting die 8 and the position to be cut on the sheet material S can be aligned with each other during the punching process.

When the job to be executed by the die cutter 100 includes a creasing process for creasing the sheet material S, the work of fixing the creasing facing concave member to the face plate 9 is performed. In this work, a double-faced tape is attached to the lower surface of the facing concave member for scoring, and the facing concave member for scoring and the clip are attached to the convex portion for scoring provided on the cutting die 8 . When the creasing concave portion transfer button is operated in this state, the moving platen 1 moves by a movement amount smaller than that of the punching operation, the face plate 9 contacts the lower surface of the opposing concave portion member, and the opposing concave portion member is transferred by the double-sided tape. Stick it on the face plate 9 . Since the clip remains on the pasted opposed recessed member, the face plate 9 is removed from the moving surface plate 1, the clip, which is an unnecessary member, is removed, and the face plate 9 is fixed to the moving surface plate 1. - 特許庁

After the various settings described above, the die cutter 100 performs an adjustment process so that appropriate punching can be performed before the mass production process in which the sheet material S is continuously conveyed and punched continuously.

In the adjustment process, only one sheet material S is fed, and a test feeding for punching is performed. In the test feeding, punching processing is performed by the die cutter 100, but separation processing by the separator is not performed, and the product in which the punching processing product and the surplus portion are not separated is discharged to the stacker.
The operator presses the test feeding button on the operation panel 101 to perform test feeding, and the operator looks at the product of the test feeding and adjusts each part. Repeat the test feed and adjustment operation as necessary.

The adjustment operation is performed using the operation panel 101, but may be performed using an external input device.
Objects to be adjusted include the position of the sheet S in the width direction, the inclination (skew) of the sheet S with respect to the conveying direction, and the position of the sheet S in the conveying direction when stopped during punching. In addition, the die cutter 100 of the present embodiment can also be adjusted by operating the operation panel 101 to correct unevenness in punching, as will be described later in detail. The operator visually checks the sheet material S obtained by the test feeding, and performs such an adjustment operation based on the misalignment and unevenness of the ejection.

After the adjustment process, the operator inputs the number of sheets to be processed and the processing speed on the operation panel 101, and presses the start button to execute the mass production process. The mass production process is stopped when the input number of sheets to be processed is completed, an error is detected, or the stop button is operated by the operator.
A start button and a stop button may be provided not only on the operation panel 101 but also on the operation section of the sheet feeder 200 so that they can be operated from either side.

Next, the punching operation of the die cutter 100 will be described.
When the start button on the operation panel 101 is pressed, the sheet material S is fed from the sheet feeder 200 , the inclination and the position in the width direction of the sheet material S are corrected by the registration device 300 , and the sheet material S is supplied to the die cutter 100 . be. In the die cutter 100, the belt drive motor 13 is driven, and the lower conveying belt 14 and the upper conveying belt 15 of the pair of conveying belts start endlessly moving. Then, the sheet material S supplied from the registration device 300 is sandwiched between the pair of conveying belts and conveyed. After the trailing edge of the sheet S is detected by the trailing edge detection sensor 25 arranged upstream of the conveying belt pair, the belt driving motor 13 is stopped after a predetermined timing has elapsed. As a result, the sheet material S nipped by the pair of conveying belts is stopped at the punching position between the moving surface plate 1 and the fixed surface plate 2 .

Next, the four press motors 3 are driven to raise the moving platen 1. As shown in FIG. When the movable surface plate 1 rises, the projection of the movable surface plate 1 pushes up the above roller holding member, and the sheet material S at the conveying height also rises. By driving the four press motors 3 forward by a predetermined amount of rotation and then stopping, the movable surface plate 1 reaches the upper stop position, and the sheet material S is punched into the shape of the cutting blade 81 of the cutting die 8 .

Next, the four press motors 3 are reversely driven by a predetermined amount of rotation and stopped, so that the moving platen 1 descends and reaches the lower stop position. At this time, the roller holding member also descends together with the moving surface plate 1, and the sheet material S descends to the conveying height. Thereafter, by restarting the driving of the belt drive motor 13, the sheet material S subjected to the punching process is conveyed to the discharge processing device 400, and the following sheet material S supplied from the registration device 300 is conveyed by the pair of conveying belts. It is sandwiched and transported to the punching position.
These operations are repeated during mass production.

In the above description, after the belt drive motor 13 stops, the press motor 3 is driven forward, and after the reverse drive of the press motor 3 is stopped, the driving of the belt drive motor 13 is resumed. is not limited to The press motor 3 may be driven forward before the belt drive motor 13 is stopped, or the belt drive motor 13 may be driven before the reverse drive of the press motor 3 is stopped, so long as the conveyance failure of the sheet material S such as jamming does not occur. may be restarted. By providing a period in which the driving period of the belt driving motor 13 and the driving period of the press motor 3 overlap, the processing speed can be improved.

Next, the motion of the press motor 3 during the punching operation will be described.
When the belt drive motor 13 is driven, the control unit 30 sets the rotation position of the press motor 3, which is a servo motor, to the lower reference rotation position corresponding to the lower stop position so that the elevation transmission mechanism 4 waits at the lower stop position. to control the rotation position.

The belt driving motor 13 is stopped and the press motor 3 starts to rotate forward after a predetermined time has passed since the trailing edge detection sensor 25 detects the passage of the trailing edge of the sheet material S. Then, the press motor 3 is rotated forward to the upper reference rotation position and stopped so that the elevation transmission mechanism 4 is at the upper stop position.
When the rotational positions of all the four press motors 3 become the upper reference rotational positions and the forward rotation stops, they wait for a predetermined time (20 [msec (milliseconds)]) and then start the reverse rotation. The four-press motor 3 stops when it rotates backward to the lower reference rotation position.
In this way, the four press motors 3 repeat forward rotation from the lower reference rotational position to the upper reference rotational position and reverse rotation from the upper reference rotational position to the lower reference rotational position, thereby performing the punching process. conduct.

FIG. 10 is a schematic explanatory diagram of one of the four elevation transmission mechanisms 4. As shown in FIG. 10(a) is an explanatory diagram of the XZ plane, FIG. 10(b) is an explanatory diagram of the YZ plane, and FIG. 10(c) is a perspective view.
As shown in FIG. 10, the elevation transmission mechanism 4 includes a rotation input gear 41 that engages with the rotation output gear 31, an eccentric shaft 44 that rotates together with the rotation input gear 41, and the eccentric shaft 44 that is fixed to the gantry frame 7. and a shaft holding portion 42 that rotatably holds the rotating shaft portion 441 . Furthermore, the elevation transmission mechanism 4 includes an elevation transmission rod 43 whose lower portion engages the eccentric shaft portion 442 of the eccentric shaft 44 and whose upper portion engages the columnar portion 10 of the moving platen 1 .

FIG. 11 shows the displacement of the lifting transmission rod 43 and the cylindrical portion 10 when the eccentric shaft 44 is rotated around the center line of the rotating shaft portion 441 so that the cylindrical portion 10 moves from the bottom dead center to the top dead center. It is an explanatory view showing . FIG. 11(a) is an explanatory diagram of a state in which the cylindrical portion 10 is positioned at the bottom dead center, and FIG. 11(b) is an explanatory diagram of a state in which the cylindrical portion 10 is positioned between the bottom dead center and the top dead center. 11(c) is an explanatory diagram of the state where the cylindrical portion 10 is positioned at the top dead center.

The eccentric shaft 44 is a member in which the positions of the center lines of the rotation shaft portion 441 engaged with the shaft holding portion 42 and the eccentric shaft portion 442 engaged with the elevation transmission rod 43 are different. The rotation input gear 41 has a center line aligned with that of the rotation shaft portion 441 .

When the press motor 3 rotates and the rotation output gear 31 rotates, the rotation input gear 41 rotates, and the eccentric shaft 44 to which the rotation input gear 41 is fixed rotates around the center line of the rotation shaft portion 441 . As a result, the eccentric shaft portion 442 rotates around the central axis of the rotating shaft portion 441, and the elevation transmission rod 43 engaged with the eccentric shaft portion 442 and the cylindrical portion 10 engaged with the elevation transmission rod 43 move. . At this time, the moving surface plate 1 having the cylindrical portion 10 is restricted from moving in the width direction (horizontal direction in FIG. 11, direction parallel to the Y-axis) by the upstream guide portion 22 and the downstream guide portion 24. The cylindrical portion 10 also does not move in the width direction. Therefore, when the eccentric shaft portion 442 is displaced in the vertical direction and the width direction due to the rotation of the eccentric shaft 44, as shown in FIG. do.

The eccentric shaft 44 of this embodiment has an eccentricity of 15 [mm] between the central axis of the rotating shaft portion 441 and the central axis of the eccentric shaft portion 442 . 11(a) to the top dead center shown in FIG. 11(c). is 30 [mm].

The moving mechanism for moving the movable surface plate 1 includes four elevation transmission mechanisms 4 (4a to 4d) as a plurality of pressurizing mechanisms for independently pressurizing the four cylindrical portions 10 as a plurality of pressurizing portions. and four press motors 3 (3a to 3d) as a plurality of drive sources for driving these.
Since the control unit 30 can independently control the driving of the four press motors 3 , the upper reference rotational position corresponding to the upper stop position can be changed for each press motor 3 . Thereby, the height of the cylindrical portion 10 at the upper stop position can be individually changed.

In the die cutter 100 of this embodiment, the eccentric shaft 44 is not controlled to make one rotation, and the cylindrical portion 10 is in the range between the bottom dead center and the top dead center. Perform control to move back and forth between positions.
Regarding the rotation angle θ of the eccentric shaft 44, if θ=0 [°] when the cylindrical portion 10 is at the bottom dead center, θ=180 [°] when the cylindrical portion 10 is at the top dead center. Here, assuming that the rotation angle of the eccentric shaft 44 is θ1 when the cylindrical portion 10 is at the lower stop position, and the rotation angle is θ2 when the cylindrical portion 10 is at the upper stop position, the following equation (1) holds. .
0 [°] ≤ θ1 < θ2 < 180 [°] (1)

Thus, by making the rotation angle at the upper stop position smaller than the rotation angle at the top dead center, it becomes possible to change the rotation angle "θ2" when the cylindrical portion 10 is at the upper stop position. It becomes possible to adjust the position of the cylindrical portion 10 of the .
When applying pressure, the four press motors 3 are rotated forward at the same speed in the state of the lower reference rotation position corresponding to the state in which the cylindrical portion 10, which is the home position of the elevation transmission mechanism 4, is positioned at the lower stop position. Then, the press motor 3, which has rotated to the upper reference rotation position corresponding to the upper stop position of the elevation transmission mechanism 4, is sequentially stopped. If the four press motors 3 have different .theta.2, the press motor 3 having a large amount of rotation from the lower reference rotational position to the upper reference rotational position has a later stop timing than the other press motors 3.
On the other hand, the amount of rotation from the lower reference rotation position to the upper reference position is calculated. Control may be performed so that the drive time to the reference rotation position is the same.

As described above, the die cutter 100 of this embodiment can change the upper reference rotation position corresponding to the upper stop position for each press motor 3, and the height of the cylindrical portion 10 at the upper stop position can be individually adjusted. can be changed to
With this configuration, by increasing the rotation amount at the upper reference rotation position of one press motor 3, the value of the rotation angle "θ2" of the eccentric shaft 44 at the upper reference rotation position is increased. , and the position of the cylindrical portion 10 at the upper stop position becomes higher. As a result, the punching pressure, which is the contact pressure between the face plate 9 and the punching die 8 during the punching process, can be increased vertically above the columnar portion 10, which is positioned higher at the upper stop position.

In this manner, in the configuration in which the contact pressure between the face plate 9 and the cutting die 8 during the punching process can be partially increased, the upper normal position of the cylindrical portion 10 below the part where the unevenness in the punching occurred during the test feeding is changed. By increasing the amount of rotation of the upper reference rotation position of the press motor 3 so as to increase the height, it is possible to perform correction to eliminate uneven punching.

In other words, the punching pressure, which is adjusted by sticking a shim tape for removing unevenness on the back of the die in a conventional die cutter, can be adjusted by changing the amount of rotation of the upper reference rotation position of the press motor 3.
For example, when the sheet material S outputted in the test feeding is unevenly discharged on the front upstream side, setting is performed to increase the amount of rotation of the upper reference rotation position of the first press motor 3a. As a result, the value of the rotation angle "θ2" of the eccentric shaft 44 of the first elevation transmission mechanism 4a is increased, and the position of the first cylindrical portion 10a at the upper stop position can be made higher than before setting. Further, the punching pressure on the front upstream side of the sheet material S during the punching process can be increased, and the uneven punching can be eliminated.

When correcting the ejection unevenness on the operation panel 101, four corners are displayed on the operation panel 101, the operator selects the corner where the operator wants to change the ejection pressure, and a screen for changing the ejection pressure of the corner is displayed. .
FIG. 12 is an explanatory diagram of a display screen (punching height adjustment screen) of the operation panel 101 for “punching height adjustment” for correcting the punching unevenness on the operation panel 101 .
Ejection height adjustment is used to increase the amount of pressurization at locations where ejection is insufficient in the test-fed product. In this embodiment, since the amount of rotation of each of the four press motors 3 can be adjusted, the four corners have variable values for the punching height.

In the display screen shown in FIG. 12, there is a drawing height distribution display section 75 in the center.
At the lower right of the drawing height distribution display section 75, there is a right front drawing height adjustment value display window 70 that indicates the adjustment value of the first press motor 3a. A right front drawing height raising button 71 for raising the right front drawing height and a right front drawing height lowering button 72 for lowering the right front drawing height.
At the lower left of the drawing height distribution display section 75, there is a left front drawing height adjustment value display window 64 that indicates the adjustment value of the second press motor 3b. It has a left front drawing height raising button 65 and a left front drawing height lowering button 66 for lowering the left front drawing height.
At the upper right of the drawing height distribution display section 75, there is a right rear drawing height adjustment value display window 67 that indicates the adjustment value of the third press motor 3c. It has a right rear drawing height raising button 68 for raising and a right rear drawing height lowering button 69 for lowering the right rear drawing height.
At the upper left of the drawing height distribution display section 75, there is a left rear drawing height adjustment value display window 61 that indicates the adjustment value of the fourth press motor 3d. It has a left rear extraction height raising button 62 for raising the left rear extraction height and a left rear extraction height lowering button 63 for lowering the left rear extraction height.

Furthermore, at the upper center of the drawing height distribution display section 75, there are an overall drawing height increase button 73 that raises the drawing height at all four locations, and a whole drawing height decrease button that lowers the drawing height at all four locations. 74 and.
In this embodiment, the adjustment unit for the four corners of the punching height is "0.01 [mm]" and the adjustment range is "0.00 to 2.50 [mm]", but the adjustment is not limited to this.
In this embodiment, in order to keep the face plate 9 flat, the diagonal corner of the four corners for adjusting the punch height is used as a fulcrum, and the other two corners are changed to follow.
In the example shown in FIG. 12, the left rear corner is adjusted to rise by "0.09". In this adjustment, since the right front corner serves as a fulcrum, the adjustment value does not change and remains "0.00". On the other hand, the other two corners (left front corner, right rear corner) rise following the rise of the left rear corner.

The punching height distribution display section 75 shows an outline of the height distribution of the upper surface of the moving surface plate 1. The upper surface of the moving surface plate 1 is divided into 16 areas, and the values are calculated based on the adjustment values of the four corners. It shows the height of each area covered.
In FIG. 12, the distribution of the punching height is shown numerically in the punching height distribution display section 75, but the distribution of the punching height may be displayed in color.

When a setting for increasing the drawing pressure is input on the drawing height adjustment screen shown in FIG. change. Further, when a setting for reducing the extraction pressure is input, the control unit 30 changes the setting so as to reduce the amount of rotation of the corresponding press motor 3 at the upper reference rotation position. Then, during the punching process, the control unit 30 controls the press motor 3 to rotate forward to the upper reference rotation position set for each press motor 3 .

The die cutter 100 of this embodiment has a configuration in which each of the four corners of the movable platen 1, which moves upward during the punching process, is vertically moved by the independent press motor 3 and the elevation transmission mechanism 4. Since each of the press motors 3 is configured to be able to individually adjust the amount of rotation, it is possible to adjust the raised positions of the four corners in accordance with the unevenness of punching, thereby improving the unevenness of punching.

Since the unevenness in punching occurs due to the arrangement of the cutting blade 81 of the cutting die 8 and the manufacturing error of the cutting die 8, when the once removed cutting die 8 is mounted on the die cutter 100 again, the same unevenness removal process as that for the previous mounting is performed. I have something to do.
In the die cutter 100 of this embodiment, the identification information and the control information for each cutting die 8 are linked and stored in the storage section of the control section 30 . The control information at this time includes information on the upper reference rotational positions of the four press motors 3 when the cutting die 8 was mounted last time. Thus, by inputting the identification information when mounting the cutting die 8, the control information linked to the identification information is called, and the upper reference rotational positions of the four press motors 3 are set at the previous mounting. It is possible to reduce the work load at the time of adjustment before mass production operation and shorten the setup time.

It is desirable that the cutting die 8 has an identification information display portion such as a bar code or control number. The identification information of the cutting die 8 to be mounted can be input by reading the barcode with a barcode reader provided on the die cutter 100 or by inputting the management number on the operation panel 101 or the like.
As a configuration for setting the upper reference rotational position according to the cutting die 8, a readable memory element such as an RF tag or an IC tag is provided on the cutting die 8, and information on the upper reference rotational position of the four press motors 3 at the time of previous mounting is provided. may be stored in the storage element of the cutting die 8, and the upper reference rotational position may be set based on the information of the storage element of the cutting die 8 read at the time of mounting.

In the die cutter 100 of the present embodiment, when a new cutting die 8 is mounted, the upper reference rotational position of the four press motors 3 can be set by operating the operation panel 101, and the unevenness of the cutting can be improved. It is possible to reduce the work of attaching the shim tape for removal. Furthermore, when the cutting die 8 is mounted for the second time or more, by inputting the identification information, the control information for the previous mounting can be called up and set, thereby semi-automating and simplifying the adjustment before the mass production operation. and can be achieved.

The die cutter 100 of this embodiment can perform leveling adjustment so that the upper surface of the movable surface plate 1 and the lower surface of the fixed surface plate 2 are nearly parallel to each other when the movable surface plate 1 reaches the upper stop position. can.
FIG. 13 is a perspective explanatory view of a leveling jig 50 used for leveling adjustment. 14A and 14B are explanatory diagrams of the horizontal adjustment jig 50, in which FIG. 14A is a top view and FIG. 14B is a front view.
The horizontal adjustment jig 50 is fixed to the stationary surface plate 2 instead of the cutting die 8 and is provided with a jig body plate portion 51 having the same outer shape as the cutting die 8 and four spacers 52 .

The spacers 52 are highly rigid members that are difficult to deform, and are manufactured with high precision so that the heights of the four spacers 52 (the lengths in the Z direction in the drawing) are uniform. It is fixed while passing through four holes provided in 51 . The four spacers 52 are arranged so that when the horizontal adjustment jig 50 is fixed to the stationary platen 2 , they face the vicinity of the four corners of the upper surface of the rectangular moving platen 1 .

FIG. 15 is a schematic diagram of a punching part when punching is performed with the upper surface of the movable surface plate 1 and the lower surface of the fixed surface plate 2 parallel to each other.
As shown in FIG. 15, a cutting die 8 having a cutting edge 81 is fixed to the lower surface of the stationary platen 2 with a stainless steel plate 82 interposed therebetween. On the other hand, a face plate 9 is fixed to the upper surface of the movable platen 1 .
While the conveyed sheet material S is stopped between the fixed surface plate 2 and the movable surface plate 1, the cylindrical portion 10 is pressed upward as indicated by the arrow in FIG. can be punched into the shape of the cutting edge 81 of the cutting die 8.

FIG. 16 is a schematic diagram of a punching part when punching is performed in a state in which the fixed surface plate 2 is inclined and the upper surface of the movable surface plate 1 and the lower surface of the fixed surface plate 2 are not parallel.
As shown in FIG. 16, even though the lower surface of the fixed surface plate 2 is inclined, if all the pressurizing portions (cylindrical portions 10) are raised to the same upper stop position, the upper surface of the movable surface plate 1 On the other hand, the cutting die 8 is in a slanted state, and a portion such as the cutting blade 81 on the right side in FIG.

FIG. 17 is a schematic diagram of a punched portion in a state shown in FIG. 16, in which a shim tape 83 for removing unevenness is attached to a portion where unevenness in punching occurs. As shown in FIG. 17, by attaching a shim tape 83, even when the lower surface of the fixed surface plate 2 and the upper surface of the movable surface plate 1 are not parallel, the cutting die 8 can be parallel to the upper surface of the movable surface plate 1. It is possible to make it in a good state and eliminate the unevenness of punching.
However, applying the shim tape 83 to eliminate uneven punching due to deterioration in parallelism between the upper surface of the movable surface plate 1 and the lower surface of the fixed surface plate 2 leads to a work burden on the operator. In addition, it is necessary to apply the same shim tape 83 each time the cutting die 8 is replaced.

On the other hand, the die cutter 100 of this embodiment can perform leveling adjustment.
18A and 18B are explanatory diagrams of leveling adjustment using the leveling jig 50. FIG. FIG. 18(a) is an explanatory view of the movable surface plate 1 at the lower stop position with the horizontal adjustment jig 50 fixed to the fixed surface plate 2, and FIG. 18(b) shows the fixed surface plate. 2 is an explanatory view when the movable platen 1 is raised to a position where it abuts with the horizontal adjustment jig 50 fixed to the platen 2. FIG.

When performing leveling adjustment, the operator attaches a leveling jig 50 to the die cutter 100 in place of the cutting die 8, as shown in FIG. input. The control unit 30, to which the leveling adjustment operation is input, simultaneously rotates the four press motors 3 in the forward direction from the state in which the four cylindrical portions 10 are positioned at the bottom dead center (the state shown in FIG. 18(a)). After the four elevation transmission mechanisms 4 are rotated forward by a preset rotation amount (constant pulse) within a range in which the moving surface plate 1 does not reach the horizontal adjustment jig 50, the four press motors 3 are controlled by: Switch to torque limit set to low torque (control to stop rotation of the press motor 3 when the set torque is reached). The low torque here is the torque necessary to raise the moving surface plate 1, and is a torque that cannot move the moving surface plate 1 any further when the moving surface plate 1 bumps into something. is. At least immediately before the contact, the moving surface plate 1 is rotated with a very low torque so that it stops when it contacts the spacer 52 of the horizontal adjustment jig 50 . Then, the stopped position is stored as a horizontal reference position.

In the leveling adjustment, the press motors 3 of the corresponding four elevation transmission mechanisms 4 are rotationally driven with the target rotational positions at which the four cylindrical portions 10 are at the top dead center.
However, in the low torque torque limit control, as shown in FIG. When it hits the lower surface, the rotation of the press motor 3 stops even if the cylindrical portion 10 has not reached the rotational position of the top dead center, resulting in a positional deviation error. For example, if the drive pulse of the press motor 3 is 1000 pulses when the elevation transmission mechanism 4 is driven so that the cylindrical portion 10 moves from the bottom dead center to the top dead center, the control unit 30 outputs 1000 pulses. The target is to drive the press motor 3. However, if the press motor 3 cannot be driven due to torque limitation when the moving surface plate 1 collides during 995 pulse driving, a positional deviation error occurs.

Since the heights of the four spacers 52 are matched with high precision, when the moving surface plate 1 is in contact with the fixed surface plate 2 via the four spacers 52, the upper surface of the moving surface plate 1 and the fixed surface plate 2 is parallel to the lower surface. At this time, since the rotational positions of the four press motors 3 are the rotational positions at which the upper surface of the movable surface plate 1 and the lower surface of the fixed surface plate 2 can be made parallel, these rotational positions are stored in the control unit 30 as horizontal reference positions. stored in the department.
In the state shown in FIG. 18B, the cylindrical portion 10 on the right side of the drawing is stopped at a higher position than the cylindrical portion 10 on the left side of the drawing. For this reason, the press motor 3 that vertically moves the cylindrical portion 10 on the right side of the drawing has a larger amount of rotation from the lower reference rotational position to the horizontal reference position than the press motor 3 that vertically moves the cylindrical portion 10 on the left side of the drawing. will increase.

By setting the upper reference rotational positions of the four press motors 3 based on the horizontal reference positions stored here, when the movable surface plate 1 reaches the upper stop position, the upper surface of the movable surface plate 1 and the fixed surface plate 2 can be brought close to a parallel state.

The rotation of the four press motors 3 stops due to a positional deviation error, and after the rotational position at that time is stored as the horizontal reference position, the motors are rotated slightly in the reverse direction, and then forwardly rotated again by the low torque torque limit control. may be repeated. Information on the horizontal reference position at which rotation is stopped due to a position deviation error is stored for each of the four press motors 3 for a plurality of times. By setting the position, it is possible to acquire more appropriate horizontal reference position information.

FIG. 19 shows a case in which the upper reference rotational positions of the four press motors 3 related to the stop positions of the four cylindrical portions 10 are set based on the horizontal reference positions stored in the state of FIG. is a schematic diagram of a punched portion of.

When the thickness of the cutting die 8 including the cutting blade 81 is greater than the height of the spacer 52, the upper reference rotational position is set so that the upper stop position is lowered by the difference. Further, when the thickness of the cutting die 8 including the cutting blade 81 is smaller than the height of the spacer 52, the upper reference rotation position is set so that the upper stop position is higher by the difference. As a result, when the punching die 8 is attached and the punching process is performed, it is possible to prevent the variation in the pressure of the face plate 9 against the punching die 8 from increasing. In any case, the subtracted or added difference value is the same for each of the four press motors 3 .
In the example shown in FIG. 19, the upper reference rotational position of each press motor 3 is set such that the upper stop position of the cylindrical portion 10 on the right side of the drawing is higher than the cylindrical portion 10 on the left side of the drawing. The upper surface of the surface plate 1 and the lower surface of the fixed surface plate 2 can be made parallel, and uneven punching due to deterioration of parallelism can be prevented.

In conventional die cutters, leveling for correcting the parallelism between the moving surface plate and the fixed surface plate is not performed. For this reason, if the parallelism between the movable surface plate and the fixed surface plate is deteriorated due to an assembly error during manufacture of the die cutter, a component error, or repeated use, the parallelism Only a shim tape for removing unevenness is attached so as to correct the unevenness caused by the deterioration of the parallelism, and the parallelism itself is not improved. With such a conventional die cutter, it is necessary to compensate for the deterioration of parallelism with shim tape, which increases the work burden on the operator and may not be able to sufficiently eliminate uneven punching depending on the operator's ability. be. Furthermore, if the shim tape is used to correct the deteriorated parallelism, it is necessary to apply a larger amount of shim tape to the same position each time, which increases the number of test feeds and waste paper.

On the other hand, in the die cutter 100 of the present embodiment, leveling adjustment is performed before mounting the cutting die 8, so that during test feeding with the cutting die 8 mounted, uneven cutting due to deterioration of parallelism occurs. It is possible to reduce the work burden of correcting the unevenness of the punching by the operator. In addition, since the leveling adjustment is performed under the control of the control unit 30, it is possible to eliminate uneven drawing caused by deterioration of parallelism regardless of the ability of the operator. Furthermore, waste paper can be reduced.

As the horizontal adjustment jig 50, it is sufficient that it can be attached to the mounting portion of the cutting die 8 to adjust the upper surface of the movable surface plate 1 and the lower surface of the fixed surface plate 2 in parallel. It is not limited to a member, and may be formed of a plate material having a uniform thickness.
Leveling using the leveling jig 50 is desirably performed at the time of shipment. Information at this time is stored in the storage unit of the control unit 30 . Next, since there is a possibility that the state of the die cutter 100 changes during movement, leveling is performed again using the leveling jig 50 at the time of installation. In addition, since the condition of the machine slightly changes depending on the season and the temperature, leveling is carried out according to the user's judgment, such as every six months, every month, every week, or every day.

The die cutter 100 includes a first strain sensor 26a and a second strain sensor 26b on the upstream side and the downstream side of the front frame 5 in the conveying direction, as shown in FIG. Further, as shown in FIGS. 3 and 4, a third strain sensor 26c and a fourth strain sensor 26d are provided on the upstream side and the downstream side of the back frame 6 in the conveying direction.
The four strain sensors 26 (26a, 26b, 26c, 26d) measure the amount of vertical expansion of the front frame 5 and the rear frame 6, which are holding members for holding the stationary platen 2 among the frames of the die cutter 100. It is an elongation measuring means.
Measurement points are set at a plurality of points (two points in this embodiment) spaced apart in the conveying direction on each of the front frame 5 and the back frame 6, which are frames on both sides of the sheet material S conveying path.

The four strain sensors 26 are fixed near the upper end of the front frame 5 or the rear frame 6, and strain detection rods 27 (27a, 27b, 27c, 27d) are arranged below the strain sensors 26, respectively. The lower ends of the four strain detection rods 27 are fixed to detection rod fixing portions 28 (28a, 28b, 28c, 28d) near the lower ends of the front frame 5 or the rear frame 6. As shown in FIG. Since the strain detection rod 27 is fixed to the front frame 5 or the back frame 6 only at its lower end, the position of the upper end is not affected by the deformation of the front frame 5 or the back frame 6 . On the other hand, since the strain sensor 26 is arranged at the upper end of the front frame 5 or the back frame 6, when the front frame 5 or the back frame 6 is extended, it moves upward to reach the upper surface of the strain detection rod 27 facing it. is released and the elongation is canceled, the distance from the strain sensor 26 to the upper surface of the strain detection rod 27 is also restored. Therefore, the strain sensor 26 can detect the extension amount of the front frame 5 or the rear frame 6 at the position where it is arranged by measuring the change in the distance to the upper surface of the strain detection rod 27 arranged oppositely.

The four strain sensors 26 detect the amount of expansion of the front frame 5 and the rear frame 6 at the installed position as electrical signals. The controller 30 can control the driving of the four press motors 3 based on the measurement results of the strain sensor 26 .

At the moment when the die cutter 100 punches out the sheet material S, a large load is applied in the vertical direction, and the frame is stretched. If the frame is stretched, the punching pressure when moving the movable platen 1 to the upper stop position is lowered, which may cause punching irregularities. Since the elongation of the frame changes depending on the job (combination of the cutting die 8 and the sheet material S, etc.) and adjustment, during the adjustment process, the upper reference rotation of each press motor 3 according to the measurement result of each strain sensor 26 Correct the amount of rotation that becomes the position. As the elongation measured by the strain sensor 26 increases, the corresponding upper reference rotational position of the press motor 3 is corrected to be closer to the rotational position at which the cylindrical portion 10 is at the top dead center. As a result, at the four corners where the frame stretches greatly during punching, the upper stop position of the movable surface plate 1 during punching is raised, and the drop in punching pressure caused by the frame stretch can be corrected in advance. . For this reason, it is possible to reduce the work load for the operator to look at the product in the test feeding and correct the unevenness, and shorten the adjustment time.

A strain sensor 26, which is an elongation measuring means, detects a change in distance between a strain sensor 26 fixed near the upper end of the frame and a strain detection rod 27 fixed near the lower end of the frame. As a configuration for detecting a change in distance, a rotating lever that is rotatable with respect to the main body of the strain sensor 26 and contacts the upper surface of the strain detecting rod 27 is provided. However, it is possible to adopt a configuration in which variation in the distance between the strain sensor 26 and the strain detection rod 27 is detected based on the detected angle. Another configuration of the elongation amount measuring means is from a reflective optical distance sensor fixed to one of the upper end and the lower end of the frame to a reflector fixed to the other of the upper end and the lower end of the frame. may be configured to calculate the distance of . Further, the elongation amount measuring means for measuring the elongation of the frame is not limited to using a distance sensor such as the strain sensor 26, but may be a strain gauge attached to the frame to measure the elongation of the frame.

Examples of the sheet material S, which is a plate-like workpiece, include paper media such as plain paper, cardboard, label paper, cardboard, and coated paper. In addition to paper media, OHP sheets, films, fabrics, resin sheets, metal sheets, metal foils, metal foils, plating, etc., can be used as plate-shaped workpieces to be processed by the punching apparatus according to the present invention. It includes applied electronic circuit board materials, special films, plastic films, prepregs, sheets for electronic circuit boards, etc., and may be in the form of a bundle in which a plurality of sheets are stacked or in a single sheet.

Although the configuration in which the moving surface plate is arranged below and the fixed surface plate is arranged above has been described, the moving surface plate may be arranged above and the fixed surface plate may be arranged below. Furthermore, it is also possible to adopt a configuration in which both of the two surface plates that face each other vertically are movable surface plates that can move up and down, and are moved toward and away from each other by a plurality of (four) lifting drive sources.
In the configuration in which the movable surface plate is arranged below and the fixed surface plate is arranged above, as in this embodiment, the four press motors 3 and the four elevation transmission mechanisms 4, which are somewhat heavy, are arranged on the lower side of the apparatus. position, and the center of gravity of the die cutter 100 device can be lowered.

What has been described above is only an example, and each of the following aspects has a unique effect.

[Aspect 1]
It controls the moving surface plates such as the moving surface plate 1 and the opposing surface plates such as the fixed surface plate 2, which are arranged facing each other in the vertical direction, the moving mechanism for moving the moving surface plate up and down toward the opposing surface plate, and the moving mechanism. and a control means such as a control unit 30, wherein the moving mechanism presses a plurality of (e.g., four) cylindrical portions 10 at different horizontal positions on the moving surface plate toward the opposing surface plate. A punching device such as a die cutter 100 that punches a workpiece such as a sheet material S into a predetermined shape by using a cutting die 8 or the like attached to at least one of a moving surface plate and an opposing surface plate by pressing. The moving surface plate is moved toward the opposing surface plate with the inter-surface plate parallel adjustment member such as the horizontal adjustment jig 50 attached to the mounting position, and when the moving surface plate stops, each of the plurality of pressurizing parts It is characterized by having storage means (storage section of control section 30, etc.) for storing position information (horizontal reference position, etc.) of the stop position.
According to this, the parallelism between the moving surface plate and the opposing surface plate during punching can be corrected by setting the stop positions of the plurality of pressurizing units during punching based on the stored position information.
In the above-described embodiment, a plurality of pressurizing mechanisms and driving sources for moving the movable surface plate during punching are provided, and by controlling the driving of each of the pressurizing units, the stop positions (upper stop positions) during punching of the plurality of pressurizing units are set. can be changed respectively.
The configuration that can adjust the parallelism is not limited to this.
For example, punching pressure adjusting means that can change the vertical position of the lower end or the upper end of the pressure mechanism at a plurality of locations near the lower end of the pressure mechanism using a single drive source for moving the movable surface plate during punching. may be arranged. In this configuration, with the inter-platen parallelism adjusting member attached, the driving source of the pressurizing mechanism is driven until just before the moving platen contacts the inter-platen parallelism adjusting member, and then the plurality of punching pressure adjusting means is operated. The pressurizing part presses toward the facing surface plate, and the adjustment position of the punching pressure adjusting means when the moving surface plate stops is stored. During the punching process, the punching die is attached, and the plurality of punching pressure adjusting means are adjusted to the memorized adjustment positions. It is possible to correct the parallelism between the platen and the facing surface plate.

[Aspect 2]
In the punching apparatus of aspect 1, when the moving platen is moved toward the opposing platen with the inter-platen parallel adjustment member attached, the pressurizing force is smaller than that during punching (with a low torque torque limit, etc.). ) is characterized by moving the moving surface plate toward the opposing surface plate.
According to this, the parallelism between the moving surface plate and the opposing surface plate can be corrected without deforming the holding members (the front frame 5 and the rear frame 6, etc.) that hold the moving surface plate and the opposing surface plate.

[Aspect 3]
In the punching apparatus of mode 1 or 2, the inter-platen parallel adjustment member is characterized by having three or more interval regulating members such as spacers 52 protruding vertically from other portions.
According to this, by creating three or more interval defining members with high accuracy, the virtual plane formed by the upper surfaces of the interval defining members and the virtual plane formed by the mask can be made parallel with high accuracy. It is possible to increase the corrected parallelism between the moving surface plate and the opposing surface plate that contact the upper surface or the lower surface of the gap defining member, respectively.

[Aspect 4]
In the punching device according to any one of modes 1 to 3, the pressurizing section is arranged to be positioned at each vertex of a rectangle included in the range of the moving platen.
According to this, the pressurizing part is arranged at four vertices of a rectangle included in the range of the moving surface plate, and four points when the moving surface plate stops with the inter-surface plate parallel adjustment member attached By storing the position information of each stop position of the pressure unit and setting the stop position of each of the four pressure units during punching based on the stored position information, Parallelism can be corrected in the front-back direction and the left-right direction, and the parallelism between the moving surface plate and the opposing surface plate during punching can be appropriately corrected.

[Aspect 5]
In the punching device according to any one of aspects 1 to 4, the moving mechanism includes a plurality of (eg, four) pressure mechanisms such as lifting transmission mechanisms 4 that pressurize the plurality of pressure units, and a plurality of pressure mechanisms. and a drive source such as a plurality of (four, etc.) press motors 3 to be driven.
According to this configuration, the control means independently controls the plurality of drive sources, thereby realizing a configuration in which the stop positions of the plurality of pressurizing portions are individually set.

[Aspect 6]
In the punching device of aspect 5, the pressurizing mechanism is an eccentric rotating body drive transmission mechanism that converts the rotating motion of the drive source into the vertical motion of the movable platen by an eccentric rotating body such as the eccentric shaft 44, and the pressing mechanism moves. In the pressurizing operation such as the lifting operation in which the surface plate is pressed toward the opposing surface plate, the pressurizing part does not reach the dead center such as the top dead center of the eccentric rotary body drive transmission mechanism. It is characterized by displacement.
A ball screw can also be used as a pressurizing mechanism for pressurizing and moving the movable platen. However, in the ball screw, the amount of movement of the movable surface plate relative to the amount of rotation output by the drive source is constant.
On the other hand, the eccentric rotary body drive transmission mechanism makes it possible to finely adjust the pressure during punching while increasing the moving speed of the moving surface plate in the moving range that does not contribute to punching. This is for the following reasons.
That is, when the pressurizing portion is positioned near the middle between the bottom dead center and the top dead center (for example, the state of FIG. 11(b)), the vertical displacement with respect to the amount of rotation is large, so this range contributes to punching. By setting the movement range of the movable surface plate in the state in which the punching is not performed, the moving speed of the movable surface plate can be increased in the movement range that does not contribute to punching. On the other hand, when the position of the pressurizing part is near the top dead center or the bottom dead center, the displacement in the vertical direction with respect to the amount of rotation is small. By setting the position close to the bottom dead center, the vertical displacement of the pressure unit relative to the amount of rotation can be reduced. Adjustment is possible.
In addition, in this aspect, the eccentric rotor does not make one rotation, and the pressurizing portion is displaced within a range sandwiched between the top dead center and the bottom dead center. Then, as in the above-described embodiment, when pressurization is performed by raising the moving platen toward the facing platen arranged above, the pressurizing part is set at a position lower than the top dead center. Displace to the stop position. In addition, unlike the above-described embodiment, when pressing is performed by lowering the moving surface plate toward the opposing surface plate disposed below, the pressing portion is set at a position higher than the bottom dead center. Displace to the stop position. By setting the stop position of the pressurizing unit during pressurization to a position that does not reach the dead center, the stop position of the pressurizing unit during pressurization can be adjusted in the vertical direction. By adjusting the stop position of the pressurizing part at the time, the punching pressure can be adjusted so as to eliminate uneven punching.

[Aspect 7]
In the punching apparatus according to any one of modes 1 to 6, it is provided with conveying means such as a lower conveying belt 14 and an upper conveying belt 15 for carrying in and out the workpiece between the moving surface plate and the opposing surface plate. It is characterized.
According to this, it is possible to realize a punching device that can correct the parallelism between the moving surface plate and the opposing surface plate during punching by using a punching device that automates the loading and unloading of the workpiece to and from the punching device.

[Aspect 8]
In the punching device according to any one of aspects 1 to 7, the opposed surface plate is an upper fixed surface plate that is above the moving surface plate and fixed to the housing of the device.
According to this, by arranging the moving platen below, the pressurizing mechanism and the driving source that constitute the moving mechanism can be arranged at a lower position in the apparatus, and the center of gravity of the apparatus can be lowered. can be stably installed.

[Aspect 9]
It controls the moving surface plates such as the moving surface plate 1 and the opposing surface plates such as the fixed surface plate 2, which are arranged facing each other in the vertical direction, the moving mechanism for moving the moving surface plate up and down toward the opposing surface plate, and the moving mechanism. and a control means such as a control unit 30, wherein the moving mechanism presses a plurality of (e.g., four) cylindrical portions 10 at different horizontal positions on the moving surface plate toward the opposing surface plate. A punching device such as a die cutter 100 that punches a workpiece such as a sheet material S into a predetermined shape with a punching die 8 or the like attached to at least one of the moving surface plate and the opposing surface plate by pressing. The moving surface plate is moved toward the opposing surface plate with the inter-surface plate parallelism adjusting member such as the horizontal adjustment jig 50 attached to the mounting position, and when the moving surface plate stops, each of the plurality of pressurizing units information of the stop position (horizontal reference position, etc.) is stored, and based on each stored stop position, the stop position of each of the plurality of pressure units during punching is determined, and the moving surface plate during punching and This is an inter-surface-plate parallel adjustment method for adjusting the parallelism of the surface facing the opposed surface plate.
According to this, the parallelism between the moving surface plate and the opposing surface plate during punching can be corrected by setting the stop positions of the plurality of pressurizing units during punching based on the stored position information.

[Aspect 10]
It controls the moving surface plates such as the moving surface plate 1 and the opposing surface plates such as the fixed surface plate 2, which are arranged facing each other in the vertical direction, the moving mechanism for moving the moving surface plate up and down toward the opposing surface plate, and the moving mechanism. and a control means such as a control unit 30, wherein the moving mechanism presses a plurality of (e.g., four) cylindrical portions 10 at different horizontal positions on the moving surface plate toward the opposing surface plate. Installation of a punching device such as a die cutter 100 that punches a workpiece such as a sheet material S into a predetermined shape by pressing, such as a cutting die 8 attached to at least one of the moving surface plate and the opposing surface plate. Positional information (horizontal (reference position, etc.) is obtained by a control means.
According to this, by setting the respective stop positions during punching of the plurality of pressurizing units based on the stored position information, the parallelism between the moving surface plate and the opposing surface plate during punching in the punching device can be improved. can be corrected.

[Aspect 11]
In a plate-like parallel adjustment member such as a horizontal adjustment jig 50 sandwiched between a movable surface plate such as a movable surface plate 1 and an opposing surface plate such as a fixed surface plate 2 of a punching device such as a die cutter 100, a plate-shaped jig is used. It is characterized by comprising a main body such as a tool main body plate portion 51, and a plurality of space regulating portions such as four or the like spacers 52 fixed in a state of penetrating the main body.
According to this, it is possible to provide an inter-surface-plate parallel adjustment member for correcting the parallelism between the movable surface plate and the opposing surface plate during punching in the punching device.

1: Movable surface plate 2: Fixed surface plate 3: Press motor 3a: First press motor 4: Lifting transmission mechanism 4a: First lifting transmission mechanism 5: Front frame 6: Back frame 7: Mounting frame 8: Cutting die 9: Face plate 10: Cylindrical portion 10a: First cylindrical portion 13: Belt drive motor 14: Lower conveying belt 15: Upper conveying belt 16: Belt drive transmission mechanism 17: Mold fixing lever 18: Mold fixing member 19: Mold abutment plate 21: Upstream Guide frame 22: Upstream guide portion 23: Downstream guide frame 24: Downstream guide portion 25: Rear end detection sensor 26: Strain sensor 26a: First strain sensor 26b: Second strain sensor 26c: Third strain sensor 26d: Third Four strain sensors 27 : strain detection rod 28 : detection rod fixing portion 30 : control portion 31 : rotation output gear 41 : rotation input gear 42 : shaft holding portion 43 : elevation transmission rod 44 : eccentric shaft 50 : horizontal adjustment jig 51 : Jig body plate portion 52 : Spacer 61 : Left rear extraction height adjustment value display window 62 : Left rear extraction height increase button 63 : Left rear extraction height lowering button 64 : Left front extraction height adjustment value display window 65 : Left front Lifting height button 66 : Left front lifting height lowering button 67 : Right rear lifting height adjustment value display window 68 : Right rear lifting height lifting button 69 : Right rear lifting height lowering button 70 : Right front lifting height adjustment value Display window 71 : Right front drawing height increase button 72 : Right front drawing height lowering button 73 : Overall drawing height raising button 74 : Overall drawing height lowering button 75 : Drawing height distribution display section 81 : Cutting blade 82 : Stainless steel plate 83 : Shim tape 100 : Die cutter 101 : Operation panel 200 : Sheet feeder 300 : Registration device 400 : Discharge processing device 441 : Rotating shaft 442 : Eccentric shaft 500 : Die cutting system H : Vertical movable range S : Sheet material

Claims (11)

a moving surface plate and a facing surface plate arranged to face each other in the vertical direction;
a moving mechanism for vertically moving the moving surface plate toward the opposing surface plate;
and a control means for controlling the movement mechanism,
The moving mechanism presses a plurality of pressurizing units having different horizontal positions on the moving surface plate toward the opposing surface plate, thereby attaching to at least one of the moving surface plate and the opposing surface plate. In a punching device that punches a workpiece into a predetermined shape with a stamped die,
The moving surface plate is moved toward the opposing surface plate with the inter-surface plate parallel adjustment member attached to the mounting position of the cutting die, and when the moving surface plate stops, each of the plurality of pressure units A punching device comprising storage means for storing position information of a stop position. The punching device of claim 1,
When moving the moving surface plate toward the opposing surface plate with the inter-surface-plate parallel adjustment member attached,
A punching device characterized in that the moving surface plate is moved toward the opposing surface plate with a pressure smaller than that during punching. 3. In the punching device of claim 1 or 2,
A punching apparatus according to claim 1, wherein the inter-surface-plate parallel adjustment member includes three or more interval regulating members protruding vertically from other portions. In the punching device according to any one of claims 1 to 3,
A punching device according to claim 1, wherein said pressurizing portion is positioned at each vertex of a rectangle included in the range of said movable platen. A punching device according to any one of claims 1 to 4,
The moving mechanism includes a plurality of pressurizing mechanisms that pressurize the plurality of pressurizing units, respectively;
and a plurality of drive sources for respectively driving the plurality of pressurizing mechanisms. In the punching device of claim 5,
The pressurizing mechanism is an eccentric rotary body drive transmission mechanism that converts the rotary motion of the drive source into vertical motion of the moving platen by an eccentric rotary body,
In the pressurizing operation in which the pressurizing mechanism presses the moving surface plate toward the opposing surface plate,
A punching device according to claim 1, wherein the pressurizing portion is displaced to a stop position that does not reach a dead center of the eccentric rotary body drive transmission mechanism. A punching device according to any one of claims 1 to 6,
A punching apparatus, comprising conveying means for carrying the workpiece in and out between the movable surface plate and the opposing surface plate. A punching device according to any one of claims 1 to 7,
A punching apparatus according to claim 1, wherein said facing surface plate is an upper fixed surface plate fixed to a housing of said apparatus above said movable surface plate. a moving surface plate and a facing surface plate arranged to face each other in the vertical direction;
a moving mechanism for vertically moving the moving surface plate toward the opposing surface plate;
and a control means for controlling the movement mechanism,
The moving mechanism presses a plurality of pressurizing units having different horizontal positions on the moving surface plate toward the opposing surface plate, thereby attaching to at least one of the moving surface plate and the opposing surface plate. moving the moving surface plate toward the opposing surface plate in a state in which an inter-surface-plate parallelism adjusting member is attached to the mounting position of the cutting die of a punching device for punching a workpiece into a predetermined shape with the cutting die, storing information on the stop position of each of the plurality of pressure units when the moving platen stops,
Based on the stored information of each stop position, the stop position of each of the plurality of pressurizing units during punching is determined, and the parallelism of the facing surfaces of the movable surface plate and the opposing surface plate during punching is determined. Parallel adjustment method between surface plates to be adjusted. a moving surface plate and a facing surface plate arranged to face each other in the vertical direction;
a moving mechanism for vertically moving the moving surface plate toward the opposing surface plate;
and a control means for controlling the movement mechanism,
The moving mechanism presses a plurality of pressurizing units having different horizontal positions on the moving surface plate toward the opposing surface plate, thereby attaching to at least one of the moving surface plate and the opposing surface plate. attached to the mounting position of the cutting die of a punching device for punching the workpiece into a predetermined shape with the cutting die,
The positional information of the stop positions of the plurality of pressure units in a state in which the opposing surfaces of the moving surface plate and the opposing surface plate are parallel to each other by being sandwiched between the moving surface plate and the opposing surface plate is obtained as described above. An inter-platen parallel adjustment member characterized by being obtained by a control means. In the inter-surface plate parallel adjustment member sandwiched between the moving surface plate and the opposing surface plate of the punching device,
a plate-like main body;
and a plurality of gap regulating portions fixed in a state of penetrating through the main body portion.

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