JP2018126749A - Can production equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide can production equipment in which a distance in the table axial direction between a work-table and a holding table can be accurately managed, thereby collision of the tables with each other can be surely prevented, and which therefore can stably produce a can.SOLUTION: The can production equipment comprises: a reciprocation mechanism that reciprocates a work-table 2 in the table axial direction with respect to a holding table 3; a table index mechanism that intermittently moves the holding table 3 by rotation around the table axis with respect to the work-table 2; a drive source that drives the reciprocation mechanism; a supply wheel 21 that supplies a cylindrical body W to the holding table 3; a discharge wheel 22 that discharges the cylindrical body W; a first detection means 31 that detects a table axial position of the work-table 2 with respect to the holding table 3; and a control part that restricts the operation of the drive source in accordance with detection results of the detection means 31, the first detection means 31 being arranged between the supply wheel 21 and the discharge wheel 22 on the upstream side of the supply wheel 21 and on the downstream side of the discharge wheel 22 along the rotation direction R1 of the holding table.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a can manufacturing apparatus for manufacturing a bottle can, an aerosol can, or the like by processing a cylindrical body (work).

Conventionally, a can manufacturing apparatus for manufacturing a bottle can, an aerosol can, or the like made of an aluminum alloy material or the like is known.
The can manufacturing apparatus is attached to the apparatus main body through an apparatus main body, a holding table supported by the apparatus main body and provided with a chuck for holding a cylindrical body (work), and a shaft portion penetrating the holding table in the table axis direction. And a machining table provided with a machining tool that is arranged to face the holding table from the table axis direction and that processes the cylindrical body.
The holding table is generally called a turntable or an index table, and the processing table is generally called a die table. These tables have a disk shape or a circular ring shape, the central axis (table axis) extends in the horizontal direction, and the central axes of the tables are arranged coaxially with each other.

A plurality of cylindrical bodies such as DI cans (intermediate molded body cans), which are workpieces, are held on the holding table along the table circumferential direction around the table axis. Specifically, the holding table is provided with a plurality of chucks (cylindrical body holders) that can hold the cylindrical body arranged in the circumferential direction of the table, and the cylindrical body has an opening end portion that is a processing table. It is held by the chuck in a posture toward.
A plurality of processing tools for processing the cylindrical body are arranged on the processing table along the circumferential direction of the table. Specifically, a plurality of mounting holes penetrating in the table axial direction are formed in the processing table, and a plurality of processing tools are attached to these mounting holes in the order of processing to the cylindrical body. It is done.

The plurality of processing tools include a die processing tool and a rotational processing tool.
The die processing tool moves in the direction of the central axis (direction parallel to the table axis) with respect to the cylindrical body, and performs a drawing process for reducing the diameter of the peripheral wall of the cylindrical body and a diameter expanding process for expanding the peripheral wall. Die processing is performed. The rotary tool moves around the central axis of the cylindrical body, and the peripheral wall of the cylindrical body is trimmed, screwed, curled, and throttled (curled) by rotating around the central axis. Etc. are applied.

Further, the apparatus body of the can manufacturing apparatus is provided with a reciprocating mechanism and a table index mechanism.
The holding table and the processing table are repeatedly moved toward and away from each other in the table axis direction by the reciprocating mechanism, and are relatively rotated in the table circumferential direction intermittently by the table index mechanism. Specifically, the processing table moves toward and away from the holding table in the table axis direction, and the holding table moves around the table around the one stroke (reciprocating movement). Rotate in the direction by a predetermined amount.

Then, for each stroke in which the tables approach and separate from each other, the cylindrical body is processed, and the cylindrical body is moved to the processing position by the next processing tool.
By repeating this operation, the cylindrical body held by the holding table is sequentially processed by a plurality of processing tools provided on the processing table, and when a series of processing is completed, Cans (bottle cans, aerosol cans, etc.) having a shape to be manufactured are manufactured.

  Moreover, the stroke adjustment mechanism (variable stroke mechanism) shown by the following patent documents 1 and 2 is used for a can manufacturing apparatus. That is, in Patent Documents 1 and 2, the reciprocating mechanism is provided with a variable stroke mechanism. The can manufacturing apparatus equipped with the variable stroke mechanism can adjust the stroke amount of the reciprocating movement of the processing table in the table axis direction with respect to the holding table, and various types in which the height in the can axis direction is variously set. Cans can be formed by sharing one apparatus.

JP 2014-91158 A US Patent Application Publication No. 2011/0214473

The conventional can manufacturing apparatus has the following problems.
In the can manufacturing apparatus, it is necessary to accurately manage the distance in the table axis direction between the processing table and the holding table (particularly, the distance when the processing table is closest to the holding table in the table axis direction). If the distance between these tables fluctuates, the height in the can axis direction (can total height) of cans manufactured by processing cylindrical bodies will fluctuate, affecting the filling and capping of contents in subsequent processes. To do. Conventionally, the distance between the tables has been measured and managed using, for example, a rod-shaped inner micrometer when the apparatus is not in operation (when can molding is stopped) other than when the apparatus is in operation (when can molding is stopped).

  However, the distance between the tables may change due to thermal expansion of the member during operation of the apparatus. Further, when an unexpected mechanical slip phenomenon occurs due to, for example, loosening of a screw member or hydraulic pressure fluctuation, the distance between the tables may change. Conventionally, when the distance between the tables changes during operation of the apparatus, the dimensional accuracy of the overall height of the can cannot be maintained satisfactorily.

  Further, in the can manufacturing apparatus provided with the variable stroke mechanism, when the stroke amount is adjusted, the top dead center of the processing table with respect to the holding table (the position where the processing table is farthest from the holding table in the table axis direction) and The bottom dead center (the position at which the machining table is closest to the holding table in the table axis direction) is changed. When adjusting the stroke amount, the height adjustment mechanism also adjusts the relative position of the processing table and the shaft portion in the table axis direction to finely adjust the processing position (height) of the can. However, the operation of accurately setting the distance between the tables at the time of stroke adjustment requires skill, and if the adjustment is performed by mistake, the machining table and the holding table may collide.

  Further, in the variable stroke mechanism, it is necessary to perform maintenance at a high frequency, for example, once a week in order to prevent the metal touch portion from sticking. The maintenance here means, for example, a full stroke crank radius changing operation. In other words, depending on the type of the variable stroke mechanism, there is a mechanism in which the rotation direction of the mechanism portion is determined only in a certain direction, and the original stroke amount may not be restored unless the mechanism portion is rotated once (full stroke). Every time such maintenance is performed, there is a possibility that a manual adjustment error (manual adjustment error) or the like may occur, and there is a risk of a collision between the processing table and the holding table.

  Therefore, it is conceivable to measure and manage the distance along the table axis direction between the machining table and the holding table by a linear position detection sensor such as a linear scale (registered trademark). However, around the holding table, can sensors for monitoring molding defects of the cylindrical body held by the chuck of the holding table are provided at a plurality of locations, and if a detection means such as a linear position detection sensor is simply installed, There is a possibility that the mounting position of the can sensor may be limited or the detection accuracy may be affected. In addition, when the processing tool for processing the cylindrical body is replaced or maintained, the detection means may interfere with the work.

  The present invention has been made in view of such circumstances, can accurately manage the distance in the table axis direction between the processing table and the holding table, to reliably prevent the collision between the tables, An object of the present invention is to provide a can manufacturing apparatus capable of producing a highly accurate and stable can.

  A can manufacturing apparatus according to an aspect of the present invention includes an apparatus main body, a holding table supported by the apparatus main body and provided with a chuck that holds a cylindrical body, and a shaft portion that penetrates the holding table in the table axial direction. A processing table that is supported by the apparatus main body and is opposed to the holding table from the table axial direction, and is provided with a processing tool for processing a cylindrical body, and the processing with respect to the holding table. A reciprocating mechanism for reciprocating the table in the direction of the table axis, a table index mechanism for intermittently rotating the holding table around the table axis with respect to the processing table, and a drive source for driving at least the reciprocating mechanism. A supply wheel for supplying a cylindrical body to the holding table; a discharge wheel for discharging the cylindrical body from the holding table; A first detection unit that detects a position of the processing table in the table axis direction with respect to a holding table; and a control unit that regulates the operation of the drive source according to a detection result of the first detection unit, The first detection means includes: the supply wheel and the discharge wheel on the upstream side of the supply wheel and the downstream side of the discharge wheel along the holding table rotation direction that is the transfer direction of the cylindrical body around the table axis. It is arranged between them.

In this can manufacturing apparatus, a cylindrical body (can of an intermediate formed body that is a workpiece) is transferred from a supply wheel to a holding table, and the processing table is processed with respect to the cylindrical body held by the chuck of the holding table. Processing is performed by a tool. In addition, the cylindrical body (can) that has been processed is transferred from the holding table to the discharge wheel and discharged outside the apparatus.
Accordingly, the upstream side of the supply wheel along the transfer direction (holding table rotation direction) of the cylindrical body (that is, the side opposite to the holding table rotation direction than the supply wheel) and the downstream side of the discharge wheel (that is, higher than the discharge wheel). The cylindrical body is not held by the chuck of the holding table corresponding to the region between the supply wheel and the discharge wheel, which is located in the rotation direction of the holding table. That is, the chuck disposed corresponding to the region is an empty chuck. Moreover, the processing table part facing the empty chuck is not provided with a processing tool for processing the cylindrical body.

  According to the present invention, the first detection means such as a linear position detection sensor for detecting the position of the machining table in the table axis direction with respect to the holding table is disposed in the region between the supply wheel and the discharge wheel. Yes. Of the chucks of the holding table, the empty chuck located in the above-mentioned region is not provided with a can sensor for monitoring the molding failure of the cylindrical body. It does not affect the mounting position and detection accuracy. In addition, since a processing tool is not provided on the processing table portion facing the empty chuck located in the above-described region, the first detection means does not interfere with the processing at the time of replacement or maintenance of the processing tool. .

  The first detecting means determines the distance along the table axis direction between the processing table and the holding table whether the apparatus is in operation (when can molding is performed) or not (when can molding is stopped). And can be detected accurately. Further, based on the detection result of the first detection means, when the position of the machining table relative to the holding table in the table axis direction is too close or too far away, the operation of the drive source is restricted by the control unit. be able to. That is, the drive can be stopped when the drive source is driven, and the drive can not be started when the drive source is not driven. Therefore, problems such as a collision between the machining table and the holding table can be reliably prevented.

  As described above, according to the present invention, the first detection unit that does not affect the mounting position and detection accuracy of the can sensor and that does not interfere with the work at the time of replacement or maintenance of the processing tool is used. Regardless of whether it is in operation or non-operation, the distance between the machining table and the holding table in the table axis direction can be managed accurately, and collision between the tables can be reliably prevented to produce a highly accurate and stable can. It can be carried out.

  Further, the can manufacturing apparatus relatively moves the processing table and the shaft portion in the table axis direction, second detection means for detecting a relative position of the processing table and the shaft portion in the table axis direction, And a height adjusting mechanism including a motor.

  In the can manufacturing apparatus, the control unit drives the motor when the position of the processing table in the table axis direction with respect to the holding table detected by the first detection unit is outside a predetermined range. It is preferable that the machining table and the shaft portion are relatively moved in the table axis direction, and the position of the machining table in the table axis direction with respect to the holding table is within the predetermined range.

  In this case, if the position of the processing table in the table axis direction with respect to the holding table is too close or too far (that is, outside the predetermined range), the second is determined based on the detection result of the first detection means. While the relative position between the machining table and the shaft portion is monitored by the detecting means, the control unit drives the motor of the height adjustment mechanism, and the position of the machining table in the table axis direction relative to the holding table is within a normal range (predetermined range). Inside). Accordingly, it is possible to more reliably avoid the problem that the machining table and the holding table collide.

  In the can manufacturing apparatus, the first detection means is preferably a magnetic linear position detection sensor.

  In this case, since the first detection means is a linear position detection sensor such as a magnetic linear scale (registered trademark), the first detection means is influenced by the oil used at the time of can molding in the can manufacturing apparatus. It is hard to receive. Therefore, the detection accuracy by the first detection means is stably and satisfactorily maintained.

  In the can manufacturing apparatus, it is preferable that the reciprocating mechanism is capable of adjusting a stroke amount for reciprocating the processing table in the table axial direction with respect to the holding table.

  In this case, the reciprocating mechanism includes a variable stroke mechanism (stroke adjustment mechanism). Conventionally, if an incorrect adjustment operation is performed during stroke adjustment of the variable stroke mechanism, the machining table and the holding table may collide. On the other hand, according to the present invention, since the first detection means is provided as described above, the collision between the machining table and the holding table is reliably avoided even if the reciprocating mechanism has a variable stroke mechanism. be able to. In addition, to prevent sticking of the metal touch part of the variable stroke mechanism, for example, even when maintenance is performed at a high frequency of about once a week, it is possible to ensure that the tables collide with each other due to human error. It can be avoided.

  According to the can manufacturing apparatus of the present invention, the distance between the processing table and the holding table in the table axial direction can be accurately managed, and the table can be reliably prevented from colliding with each other. Is possible.

It is a sectional side view showing a schematic structure of a can manufacturing device concerning one embodiment of the present invention. It is a figure which represents the II-II cross section of FIG. 1 simply. It is a side view which expands and shows the 1st detection means vicinity of a can manufacturing apparatus. It is a front view which expands and shows the 1st detection means vicinity of a can manufacturing apparatus.

  Hereinafter, can manufacturing device 1 concerning one embodiment of the present invention is explained with reference to drawings. Note that the drawings used for describing the embodiments of the present invention may show enlarged, emphasized, and excerpted parts that are essential parts in order to make the features of the present invention easier to understand. The ratio is not always the same as the actual one.

  1 and 2, a can manufacturing apparatus 1 according to the present embodiment includes various types of bottle nets including die processing and rotational processing for a bottomed cylindrical cylindrical body (can of intermediate molded body) W that is a workpiece. This is a so-called bottle necker (bottle can manufacturing apparatus) that manufactures a bottle can (product can) P having a desired shape by applying a king process.

  The cylindrical body W supplied as a workpiece to the can manufacturing apparatus 1 is a DI can that has been subjected to DI (Drawing & Ironing) processing, printing, and painting in a previous process. DI cans are made of disc-shaped blanks punched from aluminum alloy materials, cupping process (drawing process), DI process (drawing and ironing process), trimming process, printing / painting (can outer surface) process, painting (can It is formed in a bottomed cylindrical shape by applying an inner surface) process and the like.

The cylindrical body W includes a cylindrical peripheral wall (can body) and a generally disc-shaped bottom wall (can bottom). The central axis of the peripheral wall of the cylindrical body W and the central axis of the bottom wall are arranged coaxially with each other. In the present embodiment, these common axes are referred to as the central axis (can axis) of the cylindrical body W. By subjecting the tubular body W to bottle necking, the central axis of the tubular body W is formed between the body portion (maximum diameter portion) and the mouth portion (open end portion, minimum diameter portion) on the peripheral wall. A tapered neck portion is formed that gradually decreases in diameter as it goes from the body portion to the mouth portion along the direction.
The bottle can P manufactured by processing the cylindrical body W by the can manufacturing apparatus 1 is filled with contents such as a beverage in a subsequent process, and a cap is attached.

  The can manufacturing apparatus 1 includes an apparatus main body 4, a holding table 3 supported by the apparatus main body 4 and provided with a chuck (tubular body holder) 7 for holding the cylindrical body W, and the holding table 3 as a table axis TA. A machining tool 6 is provided that is supported by the apparatus body 4 via a shaft portion 10 that penetrates in the direction, is disposed to face the holding table 3 from the direction of the table axis TA, and is provided with a machining tool 6 for machining the cylindrical body W. Table 2 is provided. The processing table 2 and the holding table 3 each have a central axis (table axis TA) extending in the horizontal direction, and these central axes are arranged coaxially with each other.

  The can manufacturing apparatus 1 also includes a reciprocating mechanism 5 that reciprocates the processing table 2 in the direction of the table axis TA with respect to the holding table 3, and an intermittent rotation of the holding table 3 about the table axis TA with respect to the processing table 2. And a table index mechanism 9 to be moved.

  Further, the can manufacturing apparatus 1 includes a supply wheel 21 that supplies the cylindrical body W to the holding table 3, a discharge wheel 22 that discharges the processed cylindrical body W (bottle can P) from the holding table 3, and the holding table 3. In synchronization with the intermittent rotation around the table axis TA, a wheel index mechanism (not shown) for intermittently rotating the supply wheel 21 and the discharge wheel 22 around each wheel axis SA, DA, a reciprocating mechanism 5, and a table index A drive motor (drive source) 25 that drives the mechanism 9 and the wheel index mechanism, and a transport unit 26 that transports the bottle can P discharged from the holding table 3 by the discharge wheel 22 are provided.

  The drive motor 25, the reciprocating mechanism 5, the table index mechanism 9, and the wheel index mechanism are mechanically coupled to each other by a gear, a belt, a joint, and the like (not shown) so that they can be synchronized. That is, the reciprocating mechanism 5, the table index mechanism 9, and the wheel index mechanism are driven in synchronization with each other by the rotational driving force of the drive motor 25.

The definition of the direction (direction) used in the present embodiment is as follows.
A direction along the table axis TA (a direction in which the table axis TA extends) is referred to as a table axis TA direction.
The direction orthogonal to the table axis TA is referred to as the table radial direction. Of the table radial direction, the direction away from the table axis TA is referred to as the outer side of the table radial direction, and the direction approaching the table axis TA is referred to as the inner side of the table radial direction.
In addition, a direction that circulates around the table axis TA is referred to as a table circumferential direction. Of the table circumferential directions, the direction in which the holding table 3 is intermittently rotated with respect to the processing table 2 is referred to as a holding table rotation direction R1, and the opposite rotation direction is referred to as the opposite side to the holding table rotation direction R1. .

The holding table rotation direction R <b> 1 is a direction in which the cylindrical body W held by the chuck 7 of the holding table 3 is transferred by the holding table 3, and thus can be referred to as a transfer direction of the cylindrical body W. Specifically, the holding table rotation direction R1 is the downstream side in the transfer direction of the cylindrical body W, and the side opposite to the holding table rotation direction R1 is the upstream side in the transfer direction of the cylindrical body W.
The holding table rotation direction R1 is the same as the direction in which a plurality of processing tools 6 to be described later on the processing table 2 are arranged in the table circumferential direction in the order of processing to the cylindrical body W. Therefore, the holding table rotation direction R1 can be referred to as the downstream side of the processing order to the cylindrical body W (processing forward direction), and the side opposite to the holding table rotation direction R1 is the processing order to the cylindrical body W. It can be said that it is upstream.

  The holding table 3 and the processing table 2 are repeatedly moved toward and away from each other in the direction of the table axis TA by the reciprocating mechanism 5 and are intermittently relatively rotated in the table circumferential direction by the table index mechanism 9. Specifically, the machining table 2 moves toward and away from the holding table 3 in the direction of the table axis TA, and the holding table is moved relative to the machining table 2 during one approaching and separating stroke (reciprocating movement). 3 rotates (intermittently rotates) by a predetermined amount in the table circumferential direction.

Then, for each stroke in which the processing table 2 and the holding table 3 approach and separate, the cylindrical body W held by the chuck 7 of the holding table 3 is processed by the processing tool 6 provided on the processing table 2. Then, the holding table 3 moves the cylindrical body W toward the downstream side (holding table rotation direction R1) in the processing order to the processing position by the next (another) processing tool 6.
When this operation is repeated, the cylindrical body W held by the holding table 3 is sequentially processed by the plurality of processing tools 6 provided on the processing table 2, and a series of processing ends. Thus, a bottle can P having a desired shape is manufactured.

  The holding table 3 is generally called a turntable or an index table. The holding table 3 has a disk shape or a circular ring shape. A plurality of chucks 7 are arranged along the circumferential direction of the table on the outer peripheral portion of the surface of the holding table 3 facing the processing table 2 side.

  A cylindrical body W is held on the chuck 7, and an opening end portion of the cylindrical body W held on the chuck 7 opens toward the processing table 2. However, as shown in FIG. 4, among the plurality of chucks 7 included in the holding table 3, the upstream side of the supply wheel 21 along the holding table rotation direction R <b> 1 (that is, the holding table rotation direction R <b> 1 than the supply wheel 21 is The cylindrical body W is not held by the chuck 7 located on the opposite side) and downstream of the discharge wheel 22 (that is, the holding table rotation direction R1 than the discharge wheel 22). Specifically, among the plurality of chucks 7 of the holding table 3, the cylindrical body W is held by the chuck 7 positioned between the supply wheel 21 and the discharge wheel 22 along the holding table rotation direction R1, and the holding table rotation direction. The cylindrical body W is not held by the chuck 7 located between the discharge wheel 22 and the supply wheel 21 along R1.

  Around the holding table 3 (outside in the table radial direction of the holding table 3), a can sensor (not shown) is provided corresponding to the chuck 7 holding the cylindrical body W. A plurality of can sensors are provided at intervals in the circumferential direction of the table, and detect the presence or absence of the cylindrical body W held by the chuck 7. The can sensor can detect the abnormality when the processing tool 6 processes the cylindrical body W to cause a molding defect or the like.

The processing table 2 is generally called a die table. The processing table 2 has a disk shape or a circular ring shape. A plurality of processing tools 6 for processing the cylindrical body W held by the chuck 7 of the holding table 3 are arranged on the processing table 2 along the circumferential direction of the table. These processing tools 6 are arranged along the circumferential direction of the table on the outer peripheral portion of the processing table 2 facing the holding table 3, and the table is arranged with respect to the plurality of cylindrical bodies W held by the holding table 3. Oppositely arranged from the direction of the axis TA.
The machining tool axis (central axis) of the machining tool 6 of the machining table 2 and the central axis of the cylindrical body W (corresponding to the central axis of the chuck 7) facing the machining tool 6 in the holding table 3 are coaxial with each other. Be placed. Then, in a state where the central axis of the cylindrical body W and the processing tool axis coincide with each other, the cylindrical body W is formed by the processing tool 6.

A plurality of mounting holes are formed in the processing table 2 so as to penetrate in the table axis TA direction. The plurality of processing tools 6 are attached to these mounting holes in the order of processing to the cylindrical body W.
The plurality of processing tools 6 include a die processing tool and a rotation processing tool. In the present embodiment, a plurality of die processing tools and a plurality of rotation processing tools are detachably disposed in the plurality of mounting holes of the processing table 2 in the order of processing to the cylindrical body W. In addition, some of the plurality of mounting holes may be empty spaces in which the processing tool 6 cannot be mounted. Of the plurality of mounting holes of the processing table 2, the processing tool 6 is not mounted in the mounting hole facing the chuck 7 that does not hold the cylindrical body W described above. In addition, an oiling tool for attaching oil for performing can molding to the cylindrical body W is disposed in some of the plurality of mounting holes.

  The die processing tool moves in the direction of the center axis (direction parallel to the table axis TA) with respect to the cylindrical body W to reduce the diameter of the peripheral wall (can barrel) of the cylindrical body W or expand the peripheral wall. Die processing such as diameter expansion processing is performed. One type of die processing is performed on the cylindrical body W by one die processing tool.

  The rotary processing tool moves around its central axis with respect to the cylindrical body W, and trimming processing, screw forming processing, curling processing, and the like on the peripheral wall (can barrel) of the cylindrical body W by rotation around the central axis. A rotary process such as a throttle (curl crushing) process is performed. One type of rotational processing is performed on the cylindrical body W by one rotational processing tool.

  In FIG. 1, the shaft portion 10 is connected to the processing table 2 and extends on the table shaft TA, penetrates the holding table 3 in the direction of the table axis TA, and extends in the direction of the table axis TA with respect to the holding table 3. It is movable. Further, the shaft portion 10 is supported by the apparatus main body 4 so as to be slidable in the direction of the table axis TA, and an end portion on the opposite side to the processing table 2 along the table axis TA direction is described later of the reciprocating mechanism 5. Connected to the connecting rod 15.

The shaft portion 10 is provided integrally with the processing table 2 and extends in the direction of the table axis TA. The shaft portion 10 is disposed in the main shaft 16 and connects the processing table 2 and the reciprocating mechanism 5 to the table. A rod 8 extending in the axis TA direction and capable of adjusting the relative position of the machining table 2 in the table axis TA direction.
The can manufacturing apparatus 1 is provided with a height adjusting mechanism 11 including a motor that relatively moves the processing table 2 and the shaft portion 10 (the rod 8 thereof) in the direction of the table axis TA. The height adjustment mechanism 11 includes a motor, a gear mechanism, and the like, and moves the processing table 2 and the main shaft 16 relative to the rod 8 in the direction of the table axis TA. The height adjustment mechanism 11 can adjust the position of the machining table 2 in the direction of the table axis TA with respect to the rod 8 of the shaft portion 10.

  The rod 8 is disposed between the connecting rod 15 included in the reciprocating mechanism 5 and the processing table 2 to connect them. The rod 8 is accommodated in the main shaft 16, and the rotation of the main shaft 16 in the table circumferential direction is restricted.

  A cylindrical body 19 is disposed inside the main shaft 16. The cylindrical body 19 is disposed coaxially with the table axis TA, and is provided on the radially inner side (inner side of the table radial direction) of the peripheral wall of the main shaft 16 and on the radially outer side of the rod 8 (outer side of the table radial direction). Yes. The cylinder 19 is rotatable in the table circumferential direction with respect to the main shaft 16 and the rod 8. The outer peripheral surface of the cylindrical body 19 slides in the table circumferential direction with respect to the inner peripheral surface of the peripheral wall of the main shaft 16. The cylindrical body 19 is restricted from moving in the direction of the table axis TA with respect to the main shaft 16. An internal thread portion 18 is formed on the inner peripheral surface of the cylindrical body 19.

  A male screw portion 17 is formed in a region of the outer peripheral surface of the rod 8 corresponding to at least the cylindrical body 19 along the table axis TA direction. The male screw portion 17 of the rod 8 is screwed into the female screw portion 18 of the cylinder 19. Therefore, the cylinder 19 moves in the direction of the table axis TA with respect to the rod 8 according to the screwing amount of the male screw portion 17 and the female screw portion 18.

  With such a structure, when the cylinder 19 is rotated around the table axis TA with respect to the main shaft 16 and the rod 8, the cylinder 19 and the main shaft 16 move in the direction of the table axis TA with respect to the rod 8. . The position of the machining table 2 in the table axis TA direction with respect to the rod 8 can be adjusted.

In the example of the present embodiment, the height adjusting mechanism 11 is provided on the processing table 2 and the shaft portion 10, and the height adjusting mechanism 11 rotates the cylindrical body 19 around the table axis TA, and the rod 8 and the processing table 2. Are relatively moved in the direction of the table axis TA.
Specifically, the height adjusting mechanism 11 includes a gear mechanism that meshes with a gear provided in the cylindrical body 19 and a motor that rotates the gear mechanism. The motor is, for example, a servo motor or a stepping motor. The height adjusting mechanism 11 transmits the rotational force of the motor to the cylindrical body 19 via the gear mechanism, and thereby rotates the cylindrical body 19 around the table axis TA, so that the machining table 2 is moved to the table axis with respect to the rod 8. Move forward and backward in the TA direction.

The reciprocating mechanism 5 is provided in the apparatus main body 4. In the example of the present embodiment, the reciprocating mechanism 5 reciprocates the machining table 2 in the direction of the table axis TA with respect to the holding table 3 and can adjust the stroke amount of the reciprocating movement.
The reciprocating mechanism 5 includes a drive shaft 12 to which a rotational driving force from the drive motor 25 is transmitted, a crank mechanism 13 that converts a rotational motion around the central axis O of the drive shaft 12 into a linear motion in the table axis TA direction, And a variable stroke mechanism (stroke adjustment mechanism) 14 capable of adjusting a reciprocating movement amount (stroke amount) of the shaft portion 10 connected to the crank mechanism 13 in the direction of the table axis TA. The crank mechanism 13 includes a connecting rod 15 connected to the rod 8 of the shaft portion 10, and the connecting rod 15 has a connecting shaft (crank shaft) CA connected to the drive shaft 12.

The crank mechanism 13 converts the rotational motion around the central axis O of the drive shaft 12 input from the drive motor 25 to the drive shaft 12 into a linear motion in the direction of the table axis TA and outputs it to the rod 8 of the shaft portion 10. . That is, the working table 2 reciprocates along the table axis TA direction with respect to the holding table 3 by the action of the reciprocating mechanism 5 including the crank mechanism 13.
The position at which the machining table 2 is most separated from the holding table 3 in the direction of the table axis TA is “top dead center”, and the crank angle at the top dead center is 0 ° (360 °). The position at which the machining table 2 is closest to the holding table 3 in the direction of the table axis TA is “bottom dead center”, and the crank angle at the bottom dead center is 180 °. The crank angle is the circumferential position of the connecting shaft (crankshaft) CA of the connecting rod 15 along the center axis O of the drive shaft 12. That is, the crank angle represents an angular position around the central axis O while the connecting shaft CA makes one rotation (rotating 360 °) about the central axis O of the drive shaft 12.

  As the variable stroke mechanism 14, for example, the configuration described in Patent Document 1 (Japanese Patent Laid-Open No. 2014-91158) and Patent Document 2 (US Patent Application Publication No. 2011/0214473) described above can be used. .

The stroke amount and the shut height H of the machining table 2 will be described.
In this embodiment, the stroke amount (stroke overall length) means that the machining table 2 is most separated in the table axis TA direction with respect to the holding table 3 during one stroke in which the machining table 2 and the holding table 3 approach and separate. The difference in the distance between the tables 2 and 3 along the table axis TA direction between the top dead center that is the position positioned and the bottom dead center that is the closest position. That is, the stroke amount is the maximum displacement amount along the table axis TA direction when the machining table 2 reciprocates in the table axis TA direction with respect to the holding table 3.

  Specifically, in FIG. 1, the diameter of the rotation locus (virtual circle VC) formed by rotating the connecting shaft CA of the connecting rod 15 around the central axis O of the drive shaft 12 corresponds to the stroke amount. In addition, the symbol r shown in the drawing represents the combined crank radius, and the combined crank radius r is half (1/2) of the stroke amount. In the present embodiment, the composite crank radius r can be adjusted by the variable stroke mechanism 14, whereby the stroke amount of the machining table 2 can be set to various sizes (for example, a plurality of types in stages).

Further, the shut height H is the time when the machining table 2 is brought closest to the holding table 3 in the table axis TA direction during one stroke in which the machining table 2 and the holding table 3 approach and separate (that is, Refers to the distance between the tables 2, 3 along the table axis TA direction (at bottom dead center).
In FIG. 1, the connecting shaft CA of the connecting rod 15 is located on the opposite side (right side in FIG. 1) from the shaft portion 10 along the direction of the table axis TA with respect to the central axis O of the drive shaft 12. The connecting shaft CA is disposed on the table shaft TA. That is, this state represents the bottom dead center, and the magnitude of the distance along the table axis TA direction between the machining table 2 and the holding table 3 at the bottom dead center is the shut height H.

In the example shown in FIG. 1, the set value of the stroke amount in the variable stroke mechanism 14 of the reciprocating mechanism 5 is adjusted to the minimum (value). Specifically, the diameter of the rotation locus (virtual circle VC) formed by rotating the connecting shaft CA of the connecting rod 15 around the central axis O of the drive shaft 12 is set to the minimum value. Therefore, the combined crank radius r is also a minimum value.
In the example shown in FIG. 1, the table of the machining table 2 with respect to the rod 8 is adjusted by the height adjusting mechanism 11 so that the distance in the table axis TA direction between the machining table 2 and the holding table 3 is maximized at the bottom dead center. The position in the axis TA direction is adjusted. That is, FIG. 1 shows a state in which the shut height H is set to the maximum value.

On the other hand, although not particularly illustrated, when the set value of the stroke amount in the variable stroke mechanism 14 of the reciprocating mechanism 5 is adjusted to the maximum (value), the connecting rod 15 around the central axis O of the drive shaft 12. The diameter of the rotation locus (virtual circle VC) formed by rotating the connecting shaft CA is also the maximum value. That is, the combined crank radius r becomes the maximum value.
For example, when the set value of the stroke amount is the maximum value, the height adjusting mechanism 11 adjusts the position of the machining table 2 in the direction of the table axis TA with respect to the rod 8 so that the shut height H becomes the minimum value. The processing tool 6 of the processing table 2 and the chuck 7 of the holding table 3 may collide in the table axis TA direction. That is, in the can manufacturing apparatus 1, the machining table 2 and the holding table 3 collide with each other by the combination of the set value of the stroke amount of the reciprocating mechanism 5 and the relative position of the machining table 2 and the rod 8 in the table axis TA direction. There is a case.

Therefore, the can manufacturing apparatus 1 of the present embodiment is provided with a safety mechanism that can prevent the processing table 2 and the holding table 3 from colliding with each other.
The can manufacturing apparatus 1 includes a first detection unit 31 that detects a position of the processing table 2 in the table axis TA direction with respect to the holding table 3, and the processing table 2 and the shaft portion 10 (the rod 8) in the table axis TA direction. A second detection unit 32 that detects the relative position and a control unit 33 that regulates the operation of the drive motor 25 in accordance with the detection result of the first detection unit 31 are provided.

  The first detection means 31 is a linear position detection sensor such as a magnetic linear scale (registered trademark). 1, 3, and 4, the first detection means 31 includes a slider portion 34 attached to the outer peripheral edge of the processing table 2, and is disposed close to the slider portion 34 so as to extend in the direction of the table axis TA. And a scale unit 35 attached to the main body 4 or the floor of the building.

In the example shown in FIGS. 3 and 4, the slider portion 34 is attached to the outer peripheral edge portion of the processing table 2 via a pedestal, and the scale portion 35 is attached to the apparatus main body 4 or the floor portion of the building via a support frame. Etc. are attached. The length of the scale portion 35 along the table axis TA direction is the minimum value of the shut height H when the stroke amount of the machining table 2 is maximized by the variable stroke mechanism 14 (the machining table 2 holds at the bottom dead center). It is set so as to be able to cope with a state in which the table 3 is closest to the table 3 in the direction of the table axis TA) and a maximum value (a state in which the machining table 2 is most spaced from the holding table 3 in the direction of the table axis TA Yes.
At least one of the slider unit 34 and the scale unit 35 is electrically connected to the control unit 33. In the example shown in FIG. 1, the slider unit 34 is connected to the control unit 33.

  As shown in FIG. 4, the first detection means 31 is provided on the upstream side of the supply wheel 21 along the holding table rotation direction R <b> 1, which is the transfer direction of the cylindrical body W (slightly lower left in FIG. 4), and the discharge wheel. It is arrange | positioned between the supply wheel 21 and the discharge | emission wheel 22 in the downstream of 22 (upper right diagonal in FIG. 4).

  In FIG. 1, the second detection means 32 is an angular position detection sensor such as a rotary encoder. The second detection means 32 detects, for example, an angular position (rotational position) around the table axis TA of the cylindrical body 19 with respect to the rod 8 (or the processing table 2), whereby the table axis between the processing table 2 and the rod 8 is detected. The relative position in the TA direction is detected.

  The control unit 33 drives the motor of the height adjustment mechanism 11 when the position of the machining table 2 in the direction of the table axis TA with respect to the holding table 3 detected by the first detection unit 31 is outside a predetermined range (allowable range). Then, the machining table 2 and the shaft portion 10 (the rod 8) are relatively moved in the direction of the table axis TA, and the position of the machining table 2 in the table axis TA direction with respect to the holding table 3 is set within the predetermined range.

More specifically, when the position of the machining table 2 in the direction of the table axis TA with respect to the holding table 3 detected by the first detecting means 31 is too far from the holding table 3 and is out of the predetermined range, the control unit 33 sets the height. By driving the motor of the adjusting mechanism 11 to move the machining table 2 closer to the holding table 3, the position of the machining table 2 in the direction of the table axis TA with respect to the holding table 3 is returned to the predetermined range.
If the position of the machining table 2 in the direction of the table axis TA with respect to the holding table 3 detected by the first detection means 31 is too close to the holding table 3 and is out of the predetermined range, the control unit 33 adjusts the height. By driving the motor of the mechanism 11 and moving the machining table 2 away from the holding table 3, the position of the machining table 2 in the direction of the table axis TA with respect to the holding table 3 is returned to the predetermined range.

  Although not particularly illustrated, the can manufacturing apparatus 1 may include a third detection unit capable of detecting a set value of the stroke amount of the reciprocating mechanism 5. In this case, the control unit 33 determines the predetermined range (allowable range) based on the detection result of the third detection unit, and when the detection result of the first detection unit 31 is outside the predetermined range, The operation of the drive motor 25 may be restricted. As said 3rd detection means, angular position detection sensors, such as a rotary encoder, can be used, for example. For example, the third detecting means detects the set value of the stroke amount of the reciprocating mechanism 5 by detecting the angular position (rotational position) of the predetermined portion of the variable stroke mechanism 14 with respect to the drive shaft 12 around the central axis O. To do.

  The table index mechanism 9 has a cam structure (not shown). The table index mechanism 9 uses the cam structure to rotate and stop the holding table 3 in the holding table rotation direction R1 around the table axis TA for each stroke of the reciprocating movement of the machining table 2 in the table axis TA direction (intermittent). Rotate).

2 and 4, the supply wheel 21 is called an infeed wheel and has a substantially cylindrical shape. The supply wheel 21 receives the cylindrical body W supplied to the shooter 27 from the outside (equipment of the previous process) of the can manufacturing apparatus 1 and delivers the cylindrical body W to the holding table 3.
The discharge wheel 22 is called a discharge wheel and has a substantially cylindrical shape. The discharge wheel 22 receives the cylindrical body W (bottle can P) processed by the can manufacturing apparatus 1 from the holding table 3, and transfers (discharges) it to the conveying means 26.

The supply wheel 21 is supported by the apparatus body 4 with its central axis (wheel axis) SA arranged in parallel with the table axis TA. The supply wheel 21 is rotated in the wheel rotation direction R2 around the wheel axis SA.
The discharge wheel 22 is supported by the apparatus main body 4 with its central axis (wheel axis) DA arranged parallel to the table axis TA. The discharge wheel 22 is rotated in the wheel rotation direction R3 around the wheel axis DA.

  On the outer periphery of the supply wheel 21, a plurality of concave pockets 23 that can hold the peripheral wall of the cylindrical body W are provided at equal intervals in the circumferential direction. In addition, a plurality of concave pockets 24 that can hold the peripheral wall of the cylindrical body W (bottle can P) are provided on the outer periphery of the discharge wheel 22 at equal intervals in the circumferential direction. In FIG. 2, the pockets 23 and 24 are partially omitted.

  These pockets 23 and 24 are formed in a concave curved surface shape in which a cross section perpendicular to the wheel shafts SA and DA forms a concave arc shape corresponding to the peripheral wall of the cylindrical body W having a cylindrical shape. . Further, suction holes communicating with an air suction source (not shown) are opened on the inner surfaces of the pockets 23 and 24. The pockets 23 and 24 can hold the cylindrical body W by an air suction force of an air suction source that acts on the peripheral wall of the cylindrical body W through the suction holes.

  The wheel index mechanism has a cam structure (not shown). The wheel index mechanism uses the cam structure to rotate and stop the supply wheel 21 in the wheel rotation direction R2 around the wheel axis SA (intermittent rotation) for each stroke of the reciprocating movement of the machining table 2 in the table axis TA direction. ), The discharge wheel 22 is rotated and stopped (intermittently rotated) in the wheel rotation direction R3 around the wheel axis DA.

Specifically, the supply wheel 21 and the discharge wheel 22 are wheels that are synchronized with the intermittent rotation around the table axis TA of the holding table 3 by the wheel index mechanism and are rotated in the direction opposite to the rotation direction R1 of the holding table 3. Each of the rotation directions R2 and R3 is intermittently rotated.
The supply wheel 21 and the discharge wheel 22 are mechanically connected by a gear or the like, and intermittently rotate around the wheel shafts SA and DA in synchronization with each other.

When the supply wheel 21 rotates intermittently and the cylindrical body W held in the pocket 23 of the supply wheel 21 is disposed at a position corresponding to the chuck 7 of the holding table 3 (directly above the chuck 7), the processing table 2 pushes the cylindrical body W toward the holding table 3, and the cylindrical body W is transferred from the pocket 23 to the chuck 7 and held by the chuck 7. Is done.
Further, the cylindrical body W held by the chuck 7 of the holding table 3 is transferred in the holding table rotation direction R1 for each stroke of the processing table 2, and after all the processing is completed, it corresponds to the pocket 24 of the discharge wheel 22. When the piston portion 29 (see FIG. 3) provided on the holding table 3 is arranged at a position where it is to be placed (directly under the pocket 24), the cylindrical body W (bottle can P of the product subjected to all processing) ) Is pushed out toward the discharge wheel 22, and the cylindrical body W (P) is transferred from the chuck 7 to the pocket 24 and held in the pocket 24.
The bottle can P held in the pocket 24 is transferred around the wheel axis DA along with the intermittent rotation of the discharge wheel 22, released from the pocket 24, and then transferred by the transfer means 26.

  The conveyance means 26 conveys the bottle can P delivered from the discharge wheel 22 toward the outside of the can manufacturing apparatus 1 (equipment in a post process). In addition, what is shown with the code | symbol 28 in FIG. 2 is the raising mechanism of the bottle can P. In FIG. The bottle can P immediately after being delivered from the discharge wheel 22 to the conveying means 26 is in a state in which the can axis is oriented in the horizontal direction and laid down. (In other words, the bottom wall (can bottom) of the bottle can P is directed downward, the opening end of the bottle can P is directed upward, and the can shaft is vertically extended).

In the can manufacturing apparatus 1 of the present embodiment described above, the cylindrical body (can of intermediate formed body as a workpiece) W is delivered from the supply wheel 21 to the holding table 3 and held by the chuck 7 of the holding table 3. Various processes are applied to the cylindrical body W by the processing tool 6 of the processing table 2. In addition, the cylindrical body W (product can P) that has been completely processed is transferred from the holding table 3 to the discharge wheel 22 and discharged outside the apparatus.
Accordingly, the upstream side of the supply wheel 21 along the transfer direction (holding table rotation direction R1) of the cylindrical body W (that is, the side opposite to the holding table rotation direction R1 with respect to the supply wheel 21) and the downstream side with respect to the discharge wheel 22 That is, the cylindrical body W is not held by the chuck 7 of the holding table 3 that corresponds to the region between the supply wheel 21 and the discharge wheel 22 that is located in the holding table rotation direction R1 rather than the discharge wheel 22. . In other words, the chuck 7 arranged corresponding to the above region is an empty chuck 7. Further, the processing table 2 that faces the empty chuck 7 is not provided with the processing tool 6 for processing the cylindrical body W.

  According to the present embodiment, the first detection means 31 such as a linear position detection sensor that detects the position of the machining table 2 in the direction of the table axis TA with respect to the holding table 3 includes the supply wheel 21 and the discharge wheel 22 described above. It is arranged in the area between. Of the chucks 7 of the holding table 3, the empty chuck 7 located in the above region is not provided with a can sensor for monitoring the molding defect of the cylindrical body W, so the first detection means 31 does not affect the mounting position or detection accuracy of the can sensor. In addition, since the processing tool 6 is not provided in the processing table 2 portion facing the empty chuck 7 located in the above-described region, the first detection means 31 prevents the processing tool 6 from being replaced or maintenance work. It will never be.

  Then, the first detection means 31 determines the distance along the table axis TA direction between the machining table 2 and the holding table 3 when the apparatus is in operation (when can-molding) or not (when can-molding is stopped). Regardless of whether it is present, it can be detected accurately. If the position of the processing table 2 in the direction of the table axis TA with respect to the holding table 3 is too close or too far away from the detection result of the first detection means 31, the drive motor is controlled by the control unit 33. 25 operations can be restricted. That is, when the drive motor 25 is driven, the drive can be stopped, and when it is not driven, the drive can not be started. Therefore, problems such as a collision between the machining table 2 and the holding table 3 can be reliably prevented.

  As described above, according to the present embodiment, the first detection means 31 that does not affect the mounting position and detection accuracy of the can sensor and does not interfere with the work when the processing tool 6 is replaced or maintained. Regardless of whether the device is in operation or not, it is possible to accurately manage the distance between the machining table 2 and the holding table 3 in the direction of the table axis TA, and to reliably prevent the tables 2 and 3 from colliding with each other. Highly accurate and stable can making can be performed.

  In the present embodiment, the second detection means 32 for detecting the relative position of the machining table 2 and the shaft portion 10 (the rod 8) in the direction of the table axis TA, and the machining table 2 and the shaft portion 10 are connected to the table axis TA. And a height adjusting mechanism 11 including a motor that is relatively moved in the direction. When the position of the machining table 2 in the direction of the table axis TA with respect to the holding table 3 detected by the first detection means 31 is outside a predetermined range, the control unit 33 drives the motor to process the machining table 2 and the shaft unit. 10 is moved relative to the table axis TA direction, and the position of the machining table 2 in the table axis TA direction with respect to the holding table 3 is set within the predetermined range. As a result, the following effects can be obtained.

  That is, in this case, when the position of the machining table 2 in the direction of the table axis TA with respect to the holding table 3 is too close or too far away from the holding table 3 (that is, outside the predetermined range). The control unit 33 drives the motor of the height adjusting mechanism 11 while monitoring the relative position between the processing table 2 and the shaft portion 10 by the second detection means 32, and the table of the processing table 2 with respect to the holding table 3. The position in the axis TA direction can be returned to a normal range (within a predetermined range). Accordingly, it is possible to more surely avoid a problem that the machining table 2 and the holding table 3 collide with each other.

  In the present embodiment, since the first detection means 31 is a linear position detection sensor such as a magnetic linear scale (registered trademark), the first detection means 31 is used in the can manufacturing apparatus 1 during can molding. Insensitive to the oil used. Therefore, the detection accuracy by the first detection means 31 is stably and satisfactorily maintained.

In the present embodiment, the reciprocating mechanism 5 can adjust the stroke amount for reciprocating the machining table 2 in the direction of the table axis TA with respect to the holding table 3, that is, the reciprocating mechanism 5 is a variable stroke mechanism. (Stroke adjustment mechanism) 14 is provided.
Conventionally, if an incorrect adjustment operation is performed during the stroke adjustment of the variable stroke mechanism 14, the machining table 2 and the holding table 3 may collide. On the other hand, according to the present embodiment, since the first detection means 31 is provided as described above, even if the reciprocating mechanism 5 includes the variable stroke mechanism 14, the processing table 2 and the holding table 3 Collisions can be avoided reliably. Further, in order to prevent the metal touch part of the variable stroke mechanism 14 from sticking, for example, even when maintenance is performed at a high frequency of about once a week, the tables 2, 3 are Collisions can be avoided reliably.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention, for example, as described below.

In the above-described embodiment, the reciprocating mechanism 5, the table index mechanism 9, and the wheel index mechanism are mechanically coupled so as to be synchronizable with each other, and the drive motor 25 is connected to the reciprocating mechanism 5, the table index mechanism 9, and Although the wheel index mechanism is driven, the present invention is not limited to this. The drive motor 25 may drive at least the reciprocating mechanism 5. A drive source other than the drive motor 25 may be used.
Further, the reciprocating mechanism 5 may not include the variable stroke mechanism 14.

In the above-described embodiment, the can manufacturing apparatus 1 includes the height adjusting mechanism 11 including a motor. By operating the motor, the processing table 2 and the shaft portion 10 (the rod 8) are connected to the table shaft TA. Although the relative movement in the direction has been described, the present invention is not limited to this. For example, when the operator (operator) manually operates an adjustment handle or the like, the processing table 2 and the shaft portion 10 are relatively moved in the direction of the table axis TA, and the table axis of the processing table 2 and the shaft portion 10 is moved. The relative position in the TA direction may be adjustable. Also in this case, according to the present invention, the first detection means 31 can reliably prevent the machining table 2 and the holding table 3 from colliding with each other.
Moreover, the 2nd detection means 32 and the 3rd detection means do not need to be provided.

In the above-described embodiment, the first detection unit 31 is a magnetic linear position detection sensor. However, the present invention is not limited to this. The first detection means 31 may be, for example, an optical linear position detection sensor other than the magnetic type. However, the magnetic linear position detection sensor is more preferable because it is less susceptible to the detection accuracy due to oil or the like as described above.
Further, the first detection means 31 may be a position detection sensor other than the linear position detection sensor.

  In the above-described embodiment, the can manufacturing apparatus 1 is exemplified by the bottle can manufacturing apparatus that manufactures the bottle can P by performing various processes on the bottomed cylindrical tubular body W. It is not limited to. That is, the can manufacturing apparatus 1 may be, for example, an aerosol can manufacturing apparatus that manufactures an aerosol can by performing various processes on the cylindrical body W, or manufactures a can other than a bottle can and an aerosol can. It may be a can manufacturing device. Moreover, the cylindrical body W is not limited to a bottomed cylindrical shape, and may be formed in a cylindrical shape including only a peripheral wall (can body) that does not have a bottom wall (can bottom), for example.

  In addition, in the range which does not deviate from the meaning of this invention, you may combine each structure (component) demonstrated by the above-mentioned embodiment, a modification, and a remark etc., addition of a structure, omission, substitution, others It can be changed. Further, the present invention is not limited by the above-described embodiments, and is limited only by the scope of the claims.

  According to the can manufacturing apparatus of the present invention, the distance between the processing table and the holding table in the table axial direction can be accurately managed, and the table can be reliably prevented from colliding with each other. Is possible. Therefore, it has industrial applicability.

DESCRIPTION OF SYMBOLS 1 Can manufacturing apparatus 2 Processing table 3 Holding table 4 Apparatus main body 5 Reciprocating movement mechanism 6 Processing tool 7 Chuck (tubular body holder)
9 Table index mechanism 10 Shaft 11 Height adjustment mechanism 21 Supply wheel 22 Discharge wheel 25 Drive motor (drive source)
31 1st detection means 32 2nd detection means 33 Control part R1 Holding table rotation direction (transfer direction of a cylindrical body)
TA Table axis W Tubular body (work)

Claims (5)

The device body;
A holding table supported by the apparatus main body and provided with a chuck for holding a cylindrical body;
A processing tool is provided that is supported by the apparatus main body through a shaft portion that penetrates the holding table in the table axis direction, and that is opposed to the holding table from the table axis direction and that processes the cylindrical body. Processing table,
A reciprocating mechanism for reciprocating the processing table in the direction of the table axis with respect to the holding table;
A table index mechanism for intermittently rotating the holding table around the table axis with respect to the processing table;
A drive source for driving at least the reciprocating mechanism;
A supply wheel for supplying a cylindrical body to the holding table;
A discharge wheel for discharging the cylindrical body from the holding table;
First detection means for detecting a position of the processing table in the table axis direction with respect to the holding table;
A control unit that regulates the operation of the drive source according to the detection result of the first detection means,
The first detection means includes the supply wheel and the discharge wheel on the upstream side of the supply wheel and the downstream side of the discharge wheel along a holding table rotation direction that is a transfer direction of the cylindrical body around the table axis. The can manufacturing apparatus, which is disposed between the two. The can manufacturing apparatus according to claim 1,
Second detection means for detecting a relative position of the processing table and the shaft portion in the table axis direction;
A can manufacturing apparatus comprising: a height adjusting mechanism including a motor that relatively moves the processing table and the shaft portion in a table axis direction. The can manufacturing apparatus according to claim 2,
When the position of the machining table in the table axis direction with respect to the holding table detected by the first detection unit is outside a predetermined range, the control unit drives the motor to drive the machining table and the shaft unit. Are moved relative to each other in the table axis direction, and the position in the table axis direction of the processing table with respect to the holding table is within the predetermined range. It is a can manufacturing apparatus as described in any one of Claims 1-3,
The can manufacturing apparatus according to claim 1, wherein the first detection means is a magnetic linear position detection sensor. The can manufacturing apparatus according to any one of claims 1 to 4,
The can reciprocating mechanism is capable of adjusting a stroke amount for reciprocating the processing table in the table axial direction with respect to the holding table.

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