JPH073997U - Cutting machine - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The present invention controls each cutting condition such as the movement of the cutting blade, the number of cuts, the cutting dimension, the height of the cutting blade, and the bottom dead center position of the cutting blade. In addition, the present invention provides a cutting machine capable of preventing damage to a cutting blade and defective cutting of a workpiece and capable of half-cutting the workpiece. [Construction] In this cutting machine, screw rods 4 and 4 which are rotated by a pair of left and right servomotors 6 are planted on a pedestal 1, and a cutting blade 9 is vertically movably supported on both screw rods 4 and 4. The rotation of the servomotors 6 is controlled by the information input to the code.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting machine that controls the movement of a cutting blade based on information input by a barcode.

[0002]

[Prior art]

 Conventionally, in order to cut a rubber plate, especially a rubber plate with a mount, etc., a cutting blade is driven by a crank or a solenoid. Of these, the solenoid type cutting machine will be described with reference to FIG. 3. A rubber plate c placed on a rotary cutting table a via a sheet b is cut by a cutting blade e driven by a solenoid d. After cutting, the cutting blade e is returned to its original position by the return spring f.

[0003]

[Problems to be solved by the device]

 However, in such a conventional solenoid type cutting machine, the cutting blade e collides with the rotary cutting table a with a maximum cutting force for each cutting, so that the cutting blade e does not suffer from chipping or distortion. Caused damage. Therefore, a soft sheet b was stuck on the rotary cutting table a to weaken the cutting force, but this problem could not be completely solved. In addition, the number of cuts, cutting dimensions, cutting blade height, solenoid drive voltage, and other cutting conditions are entered using the numeric keypad and digital switch, which is labor-intensive and may cause defective cutting or damage to the cutting blade due to input errors. It was easy. Further, the rubber plate c could not be half-cut. Therefore, the purpose of the present invention is to control the cutting conditions such as the movement of the cutting blade, the number of times of cutting, the cutting dimension, the height of the cutting blade, the position of the bottom dead center of the cutting blade, and the like, to prevent damage to the cutting blade and the workpiece. We provide a cutting machine that prevents half-cutting of workpieces while preventing defective cutting.

[0004]

[Means for Solving the Problems]

 The present invention has been achieved as a result of various studies for solving the above problems.This cutting machine has screw rods which are rotated by a pair of left and right servomotors and is mounted on a mount, and the cutting blades are vertically moved on both screw rods. The feature is that it is supported freely and the rotation of the servomotor is controlled by the information entered in the barcode.

Hereinafter, a cutting machine of the present invention will be described with reference to the illustrated drawings. 1 (a) and 1 (b) show, respectively, a front view and a side view of an embodiment of the cutting machine of the present invention. In the figure, 1 is a pedestal, 2 is a base plate, 3 is a U-shaped support frame, 4 and 4 are a pair of left and right screw rods planted on the base plate 2, and the upper part is a support frame 3. The base is rotatably supported by the base plate 2. Reference numerals 5 and 6 are a speed reducer and a servo motor for driving, which are directly connected to the tops of the respective screw rods 4. Numeral 7 is a movable frame which is screwed to the left and right screw rods 2 and 2 and moves up and down. Both left and right ends are slidably supported by guides 8 fixed to the support frame 3. Reference numeral 9 is a cutting blade attached to the lower portion. Reference numeral 10 is a rotary cutting table rotatably provided on the base plate 2, 11 is a feed motor thereof, and 12 is a workpiece such as a rubber plate placed on the rotary cutting table 10.

On the other hand, FIG. 2 is an explanatory diagram showing an example of a control system applied to this cutting machine. In the figure, reference numeral 21 is a bar code reader, which reads these information from a bar code in which various cutting conditions such as cut dimensions, number of cuts, and bottom dead center position are input. 22 is a computer for inputting this information, 23 is its storage device, 24 is a sequencer master station for instructing each cutting machine of the cutting conditions input to the computer 22, and 25 is a sequencer for each cutting machine to be used. In this control system, 1) When the instruction number of the product is read by the barcode reader 21 and input to the computer 22, the cutting condition of this instruction number is retrieved from the storage device 23. When the number of the cutting machine used is input to the computer 22 with the ten keys, each of the above cutting conditions is displayed on the display. 2) When the displayed cutting conditions are transferred to the computer 22 as data that the sequencer master station 24 can understand, the cutting conditions are sent to the sequencer 25 of the cutting machine to be used, and the cutting machine is controlled. Operation information such as cutting completion, abnormalities, and the like in the cutting machine is sent to the computer 22 via the sequencer master station 24, displayed on the display, and simultaneously input as data to the storage device 23.

[0007]

[Action]

 In this cutting machine, first place the work material 12 such as a rubber plate on the rotary cutting table 10 and press the start button (not shown) to move the work material 12 to the rotary cutting table 10 (shown in the figure). It is sucked and fixed by a mechanism that does not. The bottom dead center of the cutting blade 9 is arbitrarily set in advance according to the thickness of the work material 12, and when the rubber plate with a mount is used as the work material 12, only the work material 12 is cut and cut. The blade 9 is prevented from bumping into the cutting table 10. When the servomotor 6 rotating at high speed is driven, the movable frame 7 descends as the screw rod 2 moves. At this time, the movable frame 7 smoothly descends along the guides 8, 8 provided on both sides, so that the cutting blade 9 is prevented from being shaken and the oblique cutting is prevented. The servo motor 6 drives to the preset bottom dead center position according to the inputted bar code information and cuts the workpiece 12.

Although the servomotor 6 is rotating at a high speed, a certain amount of force (torque) is required to cut the material 12 to be processed such as a rubber plate. To obtain this torque, the speed reducer 5 twists the screw. The rotation speed of 2 is reduced to obtain the torque that can cut the work material 12. The selection of the speed reducer 5 or the setting of the speed reduction conditions is determined by the material and the thickness of the work material 12 to be cut. It is designed so that it can be adapted to cut rubber plates. By using the servo motor in the cutting machine of the present invention, the bottom dead center position of the cutting blade can be controlled in units of 0.1 mm. Not only half cutting but also cutting of the workpiece 12 in the X and Y directions can be performed. Since the bottom dead center position can be set arbitrarily, for example, when cutting a rubber plate attached to a mount, cut only the rubber plate in the X direction to leave the mount, and perform a half cut, and in the Y direction A method of cutting everything from the rubber plate to the mount can be used.

[0009]

【Example】

 In the cutting device of the present invention shown in FIG. 1, HA-SC23 (manufactured by Mitsubishi Electric Corp., product name, output 200 W, torque 6.5 kgf · cm, rotation speed 3,000 rpm) is adopted as the servo motor 6 and is mainly used. As a power, the high-speed rotation motion is reduced to 600 rpm which is a practically used rotation speed through a speed reducer (BM3.1 / 5 made by IMT Co., Ltd.) 5, and 32 kgf which is a torque capable of cutting a rubber plate as a work material 12 is used. Obtained. The bottom dead center of the cutting blade 9 was controllable with a positioning accuracy of 1/100 mm. The cutting blade 9 mounted on the movable frame 7 moves upward and downward as the pair of left and right screw rods (commercially available products) 4 and 4 rotate, but these always maintain the horizontal position and the left and right misalignment. In order to suppress the occurrence of twisting, the left and right ends of the movable frame 7 are supported by guides 8 fixed to the support frame 3 so that they can be moved smoothly and accurately. As a result, we were able to maintain a moving amount of 140 mm and a moving accuracy of 1/100 mm. The rotary cutting table 10 that holds the rubber plate to be cut can be rotated 90 ° with a rotary cylinder (SMC, not shown) so that the rubber plate 12 can be cut at right angles in the X and Y directions. I chose At the time of cutting the rubber plate, the rotary cutting table 10 uses the feed motor HA-SC43 (product name of Mitsubishi Electric Corp., product name, servo motor of output 400W) 11 for the set dimension and the constant number of cuts input for the X direction. After moving and rotating by 90 °, it moved by the set dimension and the constant number of cuts input for the Y direction, and after cutting was completed, the operation returned to the origin position. When the control system of the present invention is used, the cutting blade position is set by calculation in the storage device 23 so that the most efficient number of rubber plates of various sizes (size, thickness) can be obtained. . Moreover, the bottom dead center position of the cutting blade was also controlled, and it was possible to control only the rubber plate when the rubber plate had a mount, or to cut the mount and rubber plate together. There were a total of 256 cutting machines that could be controlled by this control system.

[0010]

EFFECTS OF THE INVENTION The cutting machine of the present invention eliminates the need for cumbersome input adjustment, reduces the burden on the operator, and eliminates cut defects due to input errors. Also, since the bottom dead center can be set, the cutting blade does not hit the cutting table and half cutting can be performed. Furthermore, since the cutting blade can be stopped in front of the cutting table, there are no blade scratches due to blade spills and diagonal cutting, and the cutting shape has improved. As a result, it was possible to omit the trial cutting before the mass production and the confirmation of the size and shape of the cut product, and it was possible to remarkably improve the work efficiency, quality and yield.

[Brief description of drawings]

FIG. 1 relates to an embodiment of a cutting machine of the present invention,
(A), (b) is the front view and side view, respectively.

FIG. 2 is an explanatory view of a control system of the cutting machine of the present invention.

FIG. 3 is a front view of a conventional cutting machine.

[Explanation of symbols]

1 ... Stand, 2 ... Base plate, 3 ... Support frame, 4 ... Screw rod, 5 ... Reducer, 6 ... Servo motor, 7
Movable frame 8 Guide, 9 Cutting blade, 10 Rotary cutting table, 11 Driving motor, 12
Work material, 21 ... Bar code reader, 22 ... Computer, 23 ... Storage device, 24 ... Sequencer master station,
25. Sequencer for cutting machine.

Claims (1)

[Scope of utility model registration request] 1. A screw rod that is rotated by a pair of left and right servomotors is planted on a pedestal, a cutting blade is vertically movably supported on both screw rods, and the rotation of the servomotor is controlled by information input to a bar code. A cutting machine characterized by.