WO2020138937A1

WO2020138937A1 - Press apparatus

Info

Publication number: WO2020138937A1
Application number: PCT/KR2019/018439
Authority: WO
Inventors: 김효식; 고영기; 정식; 이보성; 김재훈; 강현우
Original assignee: 엘지전자 주식회사
Priority date: 2018-12-28
Filing date: 2019-12-26
Publication date: 2020-07-02
Also published as: KR20210096296A; KR102591402B1

Abstract

A press apparatus of the present embodiment comprises: a plurality of lower molds constituting a lower mold unit; a plurality of upper molds constituting an upper mold unit installed above the lower mold unit to be capable of moving up and down, wherein the plurality of upper molds are installed to match the plurality of lower molds, respectively; a transfer module for transferring a workpiece to be sequentially pressed by the plurality of upper molds and lower molds; and a drive unit for driving the transfer module to rotate and move up and down. The transfer module comprises a mounting unit on which the workpiece is selectively mounted and which is provided to be rotatable, and a transfer arm which extends in a radial direction from the drive unit and has an end at which the mounting unit is positioned. The mounting unit is rotatable to be disposed corresponding to a rotational position of the transfer arm.

Description

Press device

The present invention relates to a press device, and more particularly, to a press device capable of multi-process production by performing rotary feed in one press device.

In general, a press machine (press machine) is a machine that manufactures a variety of materials such as metal, plastic, fiber, etc. by shearing, molding, and pressing, and is suitable for mass production, and is widely used in all industries.

In the press device, press molds having various structures are used for cutting, punching, blanking, piercing, bending, drawing, embossing, and the like.

Except for the progressive type, which is a type produced through a number of processes while sequentially transporting among the processes working in the press device, the process transporting method of metal sheet forming is performed using a worker or a transfer robot. As it progresses, there is a problem that a large number of press devices are required.

Korean Registered Patent Publication No. 10-1254023 discloses an automatic press processing system using a plurality of third transfer robots for carrying and transporting a workpiece between a plurality of press devices.

In the above-mentioned prior art, since a workpiece must be brought in for each of a plurality of press devices, there arises a problem in that a number of transfer robots must be provided as many as the number of the press devices.

In addition, in the prior literature, a plurality of press devices are required for the sequential press processing of the workpiece, and the production time is not only inefficient, but also costly, as the number of transfer robots increases the working time as the workpiece is transferred There is a problem that it is high.

In addition, since the plurality of transfer devices must be arranged in a line in order for the plurality of transfer robots to easily carry a workpiece into each of the plurality of press devices, there is an inefficient installation space of the press device.

An object of the present invention is to provide a press device in which multiple processes are performed simultaneously and continuously while rotating and conveying a workpiece using a transfer module in a single press device.

The press device according to an embodiment of the present invention includes a plurality of lower molds constituting the lower mold unit; A plurality of upper molds constituting an upper mold unit which is installed to be able to move upwards and downwards of the lower mold unit, and installed to match each of the plurality of lower molds; A transfer module for transferring a work piece sequentially pressed by the plurality of upper molds and the plurality of lower molds; And a driving unit that drives the transfer module to rotate and elevate, and the transfer module selectively mounts the workpiece and is rotatably provided; And a transfer arm extending in the radial direction from the driving portion, the mounting portion being positioned at one end, and the mounting portion can be rotated to be disposed corresponding to a rotational position of the transfer arm.

The transfer module is located at one end of the transfer arm, further includes a mounting plate on which the mounting portion is formed, a plurality of mounting portions are provided on the mounting plate, and the plurality of mounting portions are along an edge portion of the mounting plate. It can be spaced apart.

The mounting plate may be provided in a rectangular plate shape, and a length of one edge of the mounting plate may be formed to be smaller than a distance between a plurality of lower molds disposed adjacent to each other among the plurality of lower molds.

A space is formed between a plurality of adjacent lower molds among the plurality of lower molds, and when the upper mold unit is lowered, the transfer arm is disposed above the separation space, and the mounting plate is rotated to be placed in a standby position. The standby position may be a position in which the mounting plate is disposed in the extending direction of the transfer arm.

When the transfer arm is positioned above the lower mold, the mounting plate is rotated to be placed in a mounting position, and the mounting position may be a position in which the mounting plate is arranged to form a set angle with the transfer arm.

The arrangement of the mounting plate when the transfer arm is positioned above the one lower mold may be the same as the arrangement of the mounting plate when the transfer arm is positioned above the other lower mold.

According to the embodiment of the present invention, since multiple processes can be performed in one press device, there is an effect of improving productivity.

In detail, after performing each process, since the workpiece processed through each process can be transferred to the next process by the transfer module, there is an advantage that rotational transfer and multiple processes can be automatically performed in one press device.

In addition, since one work piece is processed in one process and then transferred to the next process, and other work pieces are transferred to the one process, the work piece and other work pieces can be processed simultaneously in each process, thereby reducing production time. It has the effect.

In addition, the present invention can increase the production efficiency since up to four workpieces can be processed simultaneously in up to four processes.

In addition, production personnel can be reduced by using a single press device, and the cycle time for completing the product is reduced, thereby reducing production cost and increasing productivity.

In addition, since the workpieces located in each process can be simultaneously transported after performing the simultaneous process using the transfer module mounted on the press device, there is an advantage in that efficient transport is possible.

In addition, even if the transfer module is rotated, the mounting portion provided on the transfer module to selectively mount the workpiece can be controlled to be always disposed at the mounting position, so that the workpiece can be stably mounted as well as the next process. It can be settled stably.

1 is a perspective view of a press device according to an embodiment of the present invention.

2 is a side perspective view of a press device according to an embodiment of the present invention.

3 is a view showing a driving unit and a transfer module capable of moving up and down and rotating according to an embodiment of the present invention.

4 is a view as viewed from the front of the elevating driving section cut along 4-4 of FIG. 3.

FIG. 5 is a cross-sectional view of the rotation drive unit cut along 5-5 of FIG. 3.

6 is an enlarged view of A of FIG. 3.

7 is an upper perspective view of the press device in a state where the upper mold unit is removed.

8 is a view showing a process in which a first workpiece is introduced into a first work station according to an embodiment of the present invention.

9 is a view showing a process in which the upper mold unit descends and the first process is performed.

10 is a view showing a process of mounting the first workpiece by rotating and elevating the transfer module.

FIG. 11 is a view showing a process in which the transfer module is rotated to displace the mounted first workpiece and then dismount it.

12 is a view showing a process in which a second workpiece is introduced into a first work station according to an embodiment of the present invention.

13 is a view showing a process in which the first and second processes are performed by lowering the upper mold unit after the transfer module is rotated.

14 is a view showing a process of mounting the first and second workpieces by rotating and elevating the transfer module.

FIG. 15 is a view showing a process in which the transfer module is rotated to move and dismount the mounted first and second workpieces.

16 is a view showing a process in which a third workpiece is introduced into a first work station according to an embodiment of the present invention.

17 is a view showing a process in which the upper mold unit descends after the transfer module is rotated to perform the first, second, and third processes.

18 is a view showing a process of mounting the first, second, and third workpieces by rotating and elevating the transfer module.

19 is a view showing a process of dismounting the mounted first, second, and third workpieces by rotating the transfer module.

20 is a view illustrating a process in which a fourth workpiece is input to a first work station according to an embodiment of the present invention.

FIG. 21 is a view showing a process in which the upper mold unit descends after the transfer module rotates, and the first, second, third, and fourth processes are performed.

22 is a view showing a process in which the transfer module rotates and moves up and down to mount the second, third, and fourth workpieces and to take out the first workpiece.

23 is a view showing a state in which the first workpiece is taken out and loaded.

24 is a view showing the overall process flow of the press device.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing embodiments of the present invention, when it is determined that detailed descriptions of related well-known configurations or functions interfere with understanding of the embodiments of the present invention, detailed descriptions thereof will be omitted.

In addition, in describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to the other component, but another component between each component It should be understood that may be "connected", "coupled" or "connected".

1 is a perspective view of a press device according to an embodiment of the present invention, and FIG. 2 is a side perspective view of a press device according to an embodiment of the present invention.

1 to 2, the press system 1 according to an embodiment of the present invention includes a stacker 30 for loading a workpiece 700 for a press process and a press device 10 for performing multiple processes simultaneously. ), a robot (50,60) for carrying in and out of the workpiece 700 loaded on the stacker 30 to the press device 10 and a conveyor 70 for conveying the finished workpieces can do.

The stacker 30 may load a plurality of workpieces 700 in the form of a raw material before the press process is performed. The stacker 30 may include a lift (not shown) positioned at a specific position so that the robot 50 can easily transport the workpiece 700.

The stacker 30 may be located close to the initial work station (see FIG. 7, W1) to be described later of the press device 10. The loading time of the robot 50 may be saved by the position of the stacker 30.

The robot (50,60), the multi-process in the carrying robot 50 and the press device 10 for bringing the workpiece 700 loaded on the stacker 30 into the press device 10 is completed It may include a transport robot 60 for carrying out the workpiece 700.

The take-out robot 60 may take out the workpiece 700 in which the multi-process is completed from the press device 10 and transfer it to the conveyor 70.

The carrying robot 50 and the carrying robot 60 may include a robot arm (not shown) capable of horizontal and vertical movement. The robot arm may be provided with a mounting means (not shown) capable of mounting and dismounting the workpiece 700.

In one example, the robot arm may include a plate formed horizontally and mounting means disposed on a lower surface of the plate.

According to the shape of the robot arm, the robot arm may enter horizontally and mount horizontally after mounting the workpiece 700, so that even though the distance between the upper and lower molds of the press device 10 is close, the workpiece 700 ) Is easy to carry in and out.

The conveyor 70 may transport the workpiece 700 (finished product) transferred by the transport robot 60. The conveyor 70 can be easily transported to a specific location on which the workpiece 700 (finished product) is loaded. That is, manpower is not required for the transfer of the workpiece 700.

One side of the conveyor 70 may be positioned close to a final work station (see FIG. 7, W4) to be described later of the press device 10. The carrying time of the carrying-out robot 60 can be saved by the position of the conveyor 70.

The press device 10 may include a press frame forming an exterior, and a bolster 111 and a slide 115 installed on the press frame.

The press frame may include a lower press frame 101 positioned at the lower portion, an upper press frame 105 positioned at the upper portion, and a guide frame (not shown) that guides the elevation of the upper press frame 105. have.

The lower press frame 101 is located at the bottom of the press device 10, and may serve as a base supporting other components to be described later.

The upper press frame 105 is located on the uppermost side of the press device 10, it may be provided to be able to move up and down.

The upper press frame 105 may be moved up and down by the guide frame. The guide frame is configured to allow vertical movement of the upper press frame 105, and may be, for example, a linear guide, but is not limited thereto.

The bolster 111 may be installed on the upper side of the lower press frame 101, and the slide 115 may be installed on the lower side of the upper press frame 105. Strength of the press device 10 may be reinforced by the bolster 111.

The slide 115 may be installed to be movable up and down on the guide frame. The size of the slide 115 is formed larger than the upper press frame 105, and the upper press frame 105 may be moved up and down according to the elevation of the slide 115.

The press device 10 includes a support plate 121 installed on the bolster 111, a lower plate 123 on which a lower mold unit 210 to be described later is installed, the lower plate 123 and the support plate ( Spacer block 124 positioned between 121 and an upper plate 125 installed on the slide 115 may be included.

The support plate 121 may be installed on the upper surface of the bolster 111. The support plate 121 may support the lower mold unit 210 and the lower plate 123.

The spacer block 124 may be installed on the upper surface of the support plate 121 to support the lower plate 123.

The spacer block 124 may be provided in a column shape. The material cost of the configuration for supporting the lower plate 123 may be reduced by the shape of the spacer block 124.

A plurality of spacer blocks 124 may be provided. The plurality of spacer blocks 124 can stably support the lower plate 123 and the lower mold unit 210.

The lower plate 123 may be positioned at a specific location by the spacer block 124. That is, the height from the ground of the lower plate 123 may be determined according to the height of the spacer block 124.

In detail, when the lower plate 123 is positioned at a specific position by the spacer block 124, the robot arms of the carry-in robot 50 and the carry-out robot 60 can relatively reduce the vertical movement, The workpiece 700 can be easily transported.

The upper plate 125 is installed on the lower surface of the slide 115, it can be raised and lowered together when the slide 115.

The press device 10 may further include an upper clamp 135 for fixing the upper plate 125 and a lower clamp 131 for fixing the support plate 121.

One end of the upper clamp 135 may be combined with the upper plate 125 and the other end may be combined with the slide 115. For example, the upper clamp 135 may be coupled to the upper plate 125 and the slide 115 by a fastening structure such as a bolt.

Likewise, one end of the lower clamp 131 may be combined with the support plate 121 and the other end may be combined with the bolster 111. For example, the lower clamp 131 may be coupled to the support plate 121 and the bolster 111 by a fastening structure such as a bolt.

A plurality of the lower clamp 131 and the upper clamp 135 may be provided. The plurality of lower clamps 131 and the upper clamps 135 may be located at positions adjacent to each vertex of the support plate 121 and the upper plate 125, respectively.

The press device 10 further includes a mold unit 200, a transfer module 300 for selectively mounting the workpiece, and a driving unit 400 for lifting and lowering and rotating the transfer module 300. It can contain.

The mold unit 200 may include a lower mold unit 210 and an upper mold unit 250 installed to match each other.

The mold unit 200 may be composed of various molds for cutting, punching, blanking, piercing, bending, etc. of the workpiece 700. That is, multi-step press processing may be performed by the mold unit 200.

The lower mold unit 210 may be installed on an upper surface of the lower plate 123. The lower mold unit 210 may be installed on the lower plate 123 so as not to interfere with the lower clamp 131.

In detail, the lower mold unit 210 may be located inside the lower clamp 131.

The lower mold unit 210 may include a plurality of lower molds.

The plurality of lower molds may be arranged to surround the driving part 400. In detail, the plurality of lower molds may be arranged in a circumferential direction around the driving part 400.

The plurality of lower molds may be composed of two, three, or four, depending on the type of process, but is not limited thereto.

Hereinafter, it will be described as an example that the lower mold is provided as four.

The lower mold may include a first lower mold 212, a second lower mold 214, a third lower mold 216 and a fourth lower mold 218.

The first, 2, 3, and 4

lower molds

212, 214, 216, and 218 may be molds that perform different types of press processes.

The first, 2, 3, and 4

lower molds

212, 214, 216, and 218 may be molds of a press process sequentially performed counterclockwise or clockwise. For example, the first, 2, 3, and 4

lower molds

212, 214, 216, and 218 may be sequentially arranged in a clockwise direction.

That is, it is understood that the first lower mold 212 is a mold of a press process performed first, and the fourth lower mold 218 is a mold of a press process performed last.

The upper mold unit 250 may be installed on the lower surface of the upper plate 125. The upper mold unit 250 may be installed on the upper plate 125 so as not to interfere with the upper clamp 135.

In detail, the upper mold unit 250 may be located inside the upper clamp 135.

The upper mold unit 250 may include a plurality of upper molds.

The plurality of upper molds may be provided in the same number as the lower mold to match the plurality of lower molds. In detail, when the plurality of upper molds are lowered according to the elevation of the slide 115 and the upper press frame 105, the plurality of lower molds are matched with each other.

The upper mold may include first, second, third, and fourth upper molds 252, 254, 256, and 258 mating with the first, second, third, and fourth

lower molds

212, 214, 216, and 218, respectively.

The first, second, third, and fourth upper molds 252, 254, 256, and 258 may be positioned above the first, second, third, and fourth

lower molds

212, 214, 216, 218, respectively.

Here, a first process is performed by the first upper mold 252 and a first lower mold 212, and a second process is performed by the second upper mold 254 and the second lower mold 214. It can be defined as

In addition, a third process is performed by the third upper mold 256 and a third lower mold 216, and a fourth process is performed by the fourth upper mold 258 and the fourth lower mold 218. It can be defined as

The upper plate 125 and the lower plate 123 may be provided in a polygonal shape. For example, the upper plate 125 and the lower plate 123 may have a rectangular shape.

In addition, the lower mold and the upper mold may be provided in a polygonal shape. In detail, the lower mold and the upper mold may be formed in shapes corresponding to the shapes of the upper plate 125 and the lower plate 123.

For example, the lower mold and the upper mold may have a rectangular shape, but are not limited thereto.

The first, 2, 3, and 4

lower molds

212, 214, 216, and 218 may be spaced apart from each other. In detail, a separation space may be formed between each of the first, second, third, and fourth

lower molds

212, 214, 216, and 218.

In more detail, the driving part 400 may be disposed in a separation space formed between the first lower mold 212 and the third lower mold 216.

Alternatively, it can be understood that the driving unit 400 is disposed in a space formed between the second lower mold 214 and the fourth lower mold 218.

Between the upper mold and the lower mold, a work station W, which is a space in which a press process is performed, may be formed. The work station W is formed equal to the number of the upper mold and the lower mold.

In detail, a first work station W1 in which the first process is performed is formed between the first upper mold 252 and the first lower mold 212, and the second upper mold 254 and the second A second work station W2 in which the second process is performed is formed between the lower molds 214.

In addition, a third work station W3 in which the third process is performed is formed between the third upper mold 256 and the third lower mold 216, and the fourth upper mold 258 and fourth Between the lower mold 218, a fourth work station W4 in which the fourth process is performed is formed.

Therefore, the workpiece 700 carried into the first work station W1 by the carrying robot 50 is processed by the mold unit 200 and driven by the driving unit 400. The transfer by 300 is alternately performed, so that a multi-processed finished product can be obtained.

After the fourth process is performed in the fourth work station W4, the finished work piece may be taken out by the transport robot 60 and transferred to the conveyor 70.

3 is a view showing a drive unit and a transfer module that can be moved up and down and rotated according to an embodiment of the present invention, and FIG. 4 is a view seen from the front of the lifted up and down driver along 4-4 of FIG. 5 is a cross-sectional view of the rotary drive section cut along 5-5 of FIG. 3, and FIG. 6 is an enlarged view of FIG. 3A.

3 to 6, the press device 10 moves the position of the workpiece 700 while moving up and down and rotating by the driving unit 400 and the driving unit 400 capable of moving up and down and rotating. A transfer module 300 and a control unit 180 that controls the driving of each component may be included.

The controller 180 may control the elevation of the guide frame and the driving of the driving unit 400. By the controller 180, the slide 115 may be moved up and down, or the transfer module 300 may be moved up or down or rotated horizontally.

In addition, the control unit 180 may control the rotation adjustment unit 342 to be described later, or may be controlled by a mounting unit (see FIG. 6, 360) to be described later selectively mounting the workpiece 700.

The driving part 400 may include a lifting and lowering driving part 500 and a rotating driving part 600. The transfer module 300 may be lowered by the elevating driving unit 500, and then mounted or unmounted, and then lifted, and rotated clockwise or counterclockwise by the rotating driving unit 600. This allows the workpiece 700 to be transferred to another work station.

The transfer module 300 is provided on the body portion 310 coupled to the upper side of the driving part 400, the transfer arm 330 extending from the body portion 310, and the transfer arm 330 to avoid the blood. It may include a mounting portion 360 for selectively mounting the workpiece 700.

The main body 310 is coupled to the driving unit 400 and can be moved up and down or horizontally, and the transfer arm 330 moves clockwise or counterclockwise by rotation of the main body 310. Can be.

A plurality of transfer arms 330 may be provided.

The plurality of transfer arms 330 may extend in a radial direction from the driving part 400 based on the driving part 400. In detail, the plurality of transfer arms 330 may be formed to extend in the radial direction from the body portion 310.

Here, the radial direction may be understood as a direction based on the center of the driving unit 400 or the center C1 of the main body 310.

In other words, the plurality of transfer arms 330 may be arranged spaced apart in the circumferential direction.

Hereinafter, it will be described, for example, that the transfer arm 330 is provided in three.

The transfer arm 330 may include a first transfer arm 331, a second transfer arm 333 and a third transfer arm 335. The first, second, and

third transfer arms

331, 333, and 335 are spaced apart in the circumferential direction.

The first transfer arm 331 extends horizontally in a first direction based on the main body portion 310, and the third transfer arm 335 is in contact with the first direction based on the main body portion 310. It can extend horizontally in the opposite direction. That is, the first transfer arm 331 and the third transfer arm 335 may form a virtual straight line.

The second transfer arm 333 may extend horizontally from the body portion 310 in a direction crossing the first direction. For example, the second transfer arm 333 may extend horizontally in a direction perpendicular to the first direction.

That is, the second transfer arms 333 may extend vertically to the first and

third transfer arms

331 and 335, respectively.

The mounting part 360 may be provided at the other end of the transfer arm 330 that is located in the opposite direction to one end coupled with the main body part 310.

In detail, the mounting part 360 may be provided below the transfer arm 330. That is, the mounting part 360 may be provided on the lower surface of the transfer arm 330 located farthest from the main body 310 and the driving part 400 among the transfer arms 330.

The transfer arm 330 may be positioned at a position that does not overlap with the mold unit 200 in the vertical direction when the upper mold unit 250 moves up and down. In detail, when the upper mold unit 250 moves up and down, the plurality of transfer arms 330 may be disposed outside each of the work stations W1, W2, W3, and W4.

In more detail, when the upper mold unit 250 moves up and down, the plurality of transfer arms 330 may be located in a space spaced between each of the plurality of

lower molds

212, 214, 216, and 218.

Therefore, the upper mold unit 250 can be prevented from being interfered by the transfer arm 330 not only when moving up and down, but also during the process with the lower mold unit 210.

The driving part 400 may further include a body part 410 for installation and support of the elevating driving part 500 and the rotating driving part 600.

The body portion 410 may include a first body portion 412 installed on an upper surface of the lower plate 123 and a second body portion 414 extending upwardly from the first body portion 412. Can.

The first body portion 412 may be formed in a polygonal shape. In one example, the first body portion 412 may be formed in a square shape.

The length of the virtual diagonal line connecting the vertices facing each other of the first body part 412 is the minimum length connecting one vertex of the first lower mold 212 and one vertex of the third lower mold 214. It can be formed smaller.

The first body portion 412 may be installed by being coupled to the upper surface of the lower plate 123 by a fastening structure.

That is, when the first body portion 412 is separated from the lower plate 123, the driving unit 400 and the transfer module 300 can be separated from the lower plate 123, so that the driving unit 400 Alternatively, when the transfer module 300 fails, replacement or repair is easy.

The second body portion 414 may be formed to extend upward from the first body portion 412. The elevating driving part 500 or the rotating driving part 600 may be covered by the second body part 414.

The second body part 414 may be formed to a height corresponding to the height of the elevating and descending driving part 500. That is, the elevating and driving unit 500 is supported by the second body portion 414 while being stably supported, thereby enabling easy driving.

The body portion 410 may further include a support rib 416 that reinforces the strength of the second body portion 414. The support rib 416 protrudes upward from the first body portion 412 and may be formed to extend along a side surface of the second body portion 414.

The support rib 416 may be formed in a direction intersecting the second body portion 414. In other words, one surface of the support rib 416 may contact the first body portion 412 and the other surface may contact the side surface of the second body portion 414.

A plurality of support ribs 416 may be provided. The plurality of support ribs 416 may be provided parallel to each other.

The second body part 414 is stably mounted on the first body part 412 by the support rib 416, so that the lifting/lowering driving part 500 can be supported and driven more stably.

The elevating and driving unit 500 is for elevating and transferring the transfer module 300, a driving motor 510 that generates driving force, and a screw unit 520 rotated by driving force generated by the driving motor 510 ), the nut portion 530 moved up and down according to the rotation of the screw portion 520 and a fixed arm 535 moved up and down according to the movement of the nut portion 530 may be included.

In addition, the elevating and descending driving unit 500 includes a timing belt 515 for transmitting the driving force of the driving motor 510 to the screw 520, a support frame 540 for mounting the screw unit 520, and The fixing arm 535 may be coupled to further include an elevating plate 550 for elevating and elevating the transfer module 300.

The driving motor 510 may be controlled in the forward and reverse directions and the amount of rotation controlled. In one example, the driving motor 510 may be a servo motor.

The driving motor 510 may be installed on the upper surface of the lower plate 123. In detail, the driving motor 510 may be installed at a position spaced apart from the lower mold unit 210 on the upper surface of the lower plate 123.

More specifically, the drive motor 510 may be located between the plurality of lower molds 212,214,216,218. In one example, the driving motor 510 may be disposed between the third lower mold 216 and the fourth lower mold 218.

The drive motor 510 is installed close to the edge of the lower plate 123, and when the upper mold unit 210 moves up or down or the transfer arm 330 moves up or down, the upper mold unit ( 210) or the transfer arm 330 may be prevented from being interfered with.

The driving motor 510 may be provided with a transmission means (not shown) for transmitting driving force. In one example, the transmission means includes a timing pulley (not shown), and the driving force of the driving motor 510 may be transmitted to the timing belt 515 or the screw part 520 by the timing pulley.

In another example, the driving motor 510 is directly connected to the screw unit 520, and the driving force of the driving motor 510 may be directly transmitted to the screw unit 520.

As another example, the driving motor 510 is connected to a gear (not shown), and the gear is connected to the screw unit 520 so that the driving force of the driving motor 510 is transmitted to the screw unit 520. Can.

The timing belt 515 may be provided such that one end is connected to the drive motor 510 and the other end is connected to the screw part 520.

For example, a first timing pulley (not shown) is provided in the driving motor 510, and a second timing pulley (not shown) is provided at an end of the screw part 520 so that the timing belt 515 is the The first and second timing pulleys can be connected.

When the driving motor 510 is positioned adjacent to the edge of the upper surface of the lower plate 123, the timing belt 515 may be positioned between the plurality of lower molds.

In detail, the timing belt 515 extends from the screw portion 520 positioned at the center of the lower plate 123 to the drive motor 510 positioned adjacent to the edge of the lower plate 123. Can be.

In one example, the timing belt 515 is positioned between the third lower mold 216 and the fourth lower mold 218 to power the timing belt 515 according to the driving of the driving motor 510. Interfering with the lower mold unit 210 during transmission may be prevented.

The screw part 520 may be extended in the vertical direction and a screw shape may be formed on the outer circumferential surface. The rotation direction of the screw unit 520 may be changed according to the forward or reverse rotation of the driving motor 510.

The support frame 540 may be formed to extend in the vertical direction. In detail, the support frame 540 may be formed longer than the length of the screw portion 520 in the vertical direction.

The support frame 540 may be installed on the upper surface of the lower plate 123. In detail, the support frame 540 may be installed on the top surface of the first body portion 412.

In more detail, the support frame 540 is formed to extend upward from the upper surface of the first body portion 412 and may be supported by the second body portion 414.

The support frame 540 may be disposed around the second body portion 414. The support frame 540 may be formed lower than the height of the second body portion 414. That is, the exterior of the support frame 540 may be covered by the second body part 424.

The upper end of the support frame 540 may be formed lower than the height of the elevating plate 550. In detail, the upper end of the support frame 540 may be formed lower than the lowest height of the elevating plate 550. That is, when the driving unit 500 is driven, the support frame 540 may be prevented from interfering with the lifting unit of the lifting plate 550.

The elevation driving unit 500 may further include a support block 545 for mounting the screw unit 520 to the support frame 540.

A screw shape corresponding to the screw shape of the screw portion 520 may be formed on the inner circumferential surface of the support block 545. For example, the screw portion 520 may be formed with a female thread, and a male thread may be formed on an inner circumferential surface of the support block 545.

A plurality of support blocks 545 may be provided.

One of the plurality of support blocks 545 is located at the upper end of the screw portion 520 and coupled to the support frame 540, and the other is located at the lower portion of the screw portion 520 to support the frame. 540.

That is, the plurality of support blocks 545 may be fixed to the support frame 540 to mount the screw unit 520 to the support frame 540.

The other of the plurality of support blocks 545 may be positioned relatively higher than the lower end of the screw portion 520. The lower end of the screw portion 520 is connected to the timing belt 515, and the other support block 545 may be positioned spaced upward from the timing belt 515.

The plurality of support blocks 545 may limit excessive vertical movement of the nut part 530. That is, by the plurality of support blocks 545, the nut part 530 may move up and down the distance between any one of the support blocks 545 and the other support block 545.

A screw shape may be formed on the inner circumferential surface of the nut part 530. In detail, a thread is formed on the inner circumferential surface of the nut portion 530 that is screwed with the outer circumferential surface of the screw portion 520, so that the nut portion 530 is moved upward or downward according to the rotational direction of the screw portion 520. Can be moved.

For example, the screw portion 520 may be formed with a female thread, and the nut portion 530 may be formed with a male thread.

The fixing arm 535 may extend in the same direction as the screw part 520 extends. The fixed arm 535 may be formed to extend in the vertical direction.

The fixing arm 535 may be coupled to the nut part 530. That is, when the nut portion 530 moves in the vertical direction according to the rotation of the screw portion 520, the fixing arm 535 coupled to the nut portion 530 may be moved in the vertical direction.

The elevating plate 550 may be connected to the nut part 530 such that when the nut part 530 moves up and down, the nut part 530 moves together in the up and down direction. In detail, the elevating plate 550 is coupled to the fixing arm 535 and can be moved up and down together when the nut part 530 moves up and down.

In more detail, one end of the fixed arm 535 is coupled to the nut portion 530, and the other end of the fixed arm 535 can be coupled to the elevating plate 550.

Although the fixed arm 535 and the elevating plate 550 are described as being configured separately, it is revealed that they may be integrally formed.

The height of the elevating plate 550 may be positioned higher than the height of the upper end of the support frame 540. In detail, when the nut part 530 is the lowest height, the height of the elevating plate 550 may be formed to be higher than the height of the upper end of the support frame 540.

In addition, the height of the elevating plate 550 may be positioned higher than the height of the upper end of the second body portion 414. In detail, when the nut part 530 is at the lowest height, the height of the elevating plate 550 may be formed to be higher than the height of the upper end of the second body part 414.

Therefore, according to the height relationship between the elevating plate 550 and the support frame 540 or the second body portion 414, the elevating plate 550 is the support frame 540 or the second body when elevating Interference with the part 414 can be prevented.

In the drawing illustrated in FIG. 4, the elevation driving unit 500 in the state where the second body portion 414 and the support rib 416 are removed is illustrated. The first body part 412 supports the support frame 540, and the support frame 540 may be supported by the second body part 414 and the support rib 416.

In addition, an exterior may be covered by at least one side of the elevating driving unit 500 by the second body unit 414.

When the driving motor 510 is driven by the controller 180, the driving force of the driving motor 510 is transmitted to the screw unit 520 through the timing belt 515 so that the screw unit 520 is Can be rotated. The nut part 530 may move up and down according to the rotation of the screw part 520 so that the elevating plate 550 may elevate.

Specifically, when the driving motor 510 is controlled to rotate in the forward direction, the screw part 520 receiving the driving force through the timing belt 515 is rotated in one direction so that the nut part 530 moves upward. Can.

At this time, as the nut portion 530 moves upward, the fixing arm 535 and the elevating plate 550 fixedly coupled to the nut portion 530 move up and down, so that the transfer module 300 moves up and down. Can.

On the other hand, when the driving motor 510 is controlled to be rotated in the reverse direction by the controller 180, the screw part 520 receiving the driving force through the timing belt 515 is rotated in the other direction to rotate the nut part 530 may move downward.

At this time, as the nut portion 530 moves downward, the fixing arm 535 and the elevating plate 550 fixedly coupled to the nut portion 530 descend, so that the transfer module 300 descends. Can.

Here, the one direction may be either clockwise or counterclockwise, and the other direction may be another one of the clockwise or counterclockwise.

The control unit 180 may control the rotation of the driving motor 510 by sensing the pitch of the screw unit 520.

For example, based on the pitch value of the screw unit 520 provided in the elevating driving unit 500 and sensed by a sensor unit (not shown) that senses a distance, the control unit 180 controls the driving motor ( 510).

In other words, the control unit 180 may control the driving motor 510 such that the nut unit 530 reaches a target height based on the pitch value of the screw unit 520.

It is noted that the support frame 540 may be installed on the first body portion 412, but is not limited thereto, and may be directly installed on the upper surface of the lower plate 123.

The rotation driving unit 600 is for horizontally rotating the transfer module 300, a driving motor 610 generating a driving force, a first rotational shaft 630 which is a rotation axis of the driving motor 610, and the driving motor ( It may include a gear box 620 is located a configuration for transmitting the driving force generated in 610 to the body portion 310 of the transfer module 300.

The gear box 620 may be located above the elevating and driving unit 500. In detail, the gear box 620 may be located on the upper surface of the elevating plate 550.

The driving motor 610 is located under the gear box 620 and may be disposed on one side of the elevating and driving unit 500.

The driving motor 610 may be controlled in the forward and reverse directions and the amount of rotation. In one example, the driving motor 610 may be a servo motor.

The driving motor 510 of the elevating driving unit 500 may be defined as an elevating motor or a first motor, and the driving motor 610 of the rotating driving unit 600 may be defined as a rotating motor or a second motor. have.

The driving motor 610 may be located outside the second body portion 414. That is, the position of the driving motor 610 of the elevating driving part 500 and the rotation driving part 600 may be separated by the second body part 414.

The driving motor 610 may be positioned between the plurality of support ribs 416. The driving motor 610 may overlap the plurality of support ribs 416 in the horizontal direction.

Here, the horizontal direction may be understood as a direction from one support rib 416 of the plurality of support ribs 416 toward the other support rib 416.

5, the left and right lengths of the gear box 620 may be formed to be longer than the left and right lengths of the elevating plate 550. At least a portion of the gear box 620 may overlap the elevating plate 550 in the vertical direction.

The gear box 620 may be coupled to the elevating plate 550 by a fastening structure or the like. When the elevating plate 550 is elevating, the gear box 620 may be elevating together.

The driving motor 610 may be located below the gear box 620. In detail, the driving motor 610 may be disposed on the side of the elevating plate 550 of the gear box 620 below.

The rotation driving part 600 is coupled to the first rotation shaft 630 and a reduction gear 615 disposed on one side of the driving motor 610, and a first gear 635 coupled to the first rotation shaft 630. , The second gear 645 gear-coupled with the first gear 635, the second rotation shaft 640 which is the rotation axis of the second gear 645, and the second rotation shaft 640 and coupled to the transfer module ( 300) may further include a rotating portion 650 connected to.

The rotation driving part 600 may further include a bearing 655 on which the rotation part 650 is installed.

The speed reducer 615 may be disposed above the driving motor 610. The speed reducer 615 may be rotated around the first rotation shaft 630. That is, the reduction gear 615 and the driving motor 610 are rotated around the first rotation shaft 630 which is the same rotation shaft.

The reduction gear 615 may be a reduction gear. The speed reducer 615 is coupled to the drive motor 610 to decelerate, thereby easily obtaining a desired number of revolutions.

The higher the rotation speed of the drive motor 610 is, the higher the efficiency and economical efficiency may be, but sometimes it may be necessary to generate low-speed rotation or large torque. At this time, the driving motor 610 may be driven to rotate tens of times or more of the required rotational speed, and the desired rotational speed may be derived by combining and decelerating the reduction gear.

Alternatively, by combining a reduction gear with the driving motor 610, a large torque that cannot be obtained with the driving motor 610 may be generated. That is, even if the drive motor 610 is small, it is possible to easily obtain a large torque corresponding to the deceleration by the reduction gear.

The first rotation shaft 630 may be formed to extend upward so that at least a portion is located in the gear box 620. In detail, a part of the first rotation shaft 630 is located in the gear box 620, and another part is located outside the gear box 620.

In more detail, the first rotation shaft 630 is disposed through the lower surface of the gear box 620, and the driving force of the driving motor 610 located outside the gear box 620 is the gear box 620. Can be delivered inside.

That is, an axial hole (not shown) through which the first rotation shaft 630 passes may be formed on a lower surface of the gear box 620.

The first rotation shaft 630 may be located on the side of the elevating plate 550. The first rotation shaft 630 is positioned so as not to overlap the elevation plate 550 in the vertical direction.

The first gear 635, the second gear 645, the second rotation shaft 640, the rotation part 650, and the bearing 655 may be located inside the gear box 620. The first gear 635, the second gear 645, the second rotation shaft 640, the rotating part 650, and the bearing 655 may be prevented from being exposed to the outside by the gear box 620.

Therefore, foreign substances generated during the pressing process are prevented from flowing into the first gear 635, the second gear 645, the second rotation shaft 640, the rotating part 650, and the bearing 655, and the rotation is prevented. The failure of the driving unit 600 can be prevented.

The first gear 635 may be axially coupled to the first rotation shaft 630. In detail, the first gear 635 may be axially coupled to a portion of the first rotating shaft 630 located in the gear box 620 among the first rotating shaft 630.

The first gear 635 is axially coupled to the first rotation shaft 630 so that the first gear 635 is rotated by rotation of the first rotation shaft 630 when the drive motor 610 is driven. Can.

The second gear 645 is located on the side of the first gear 635, and may be geared with the first gear 635.

The second gear 645 may be coupled to the second rotating shaft 640. The driving force of the driving motor 610 may be transmitted to the second rotating shaft 640 through the first rotating shaft 630, the first gear 635, and the second gear 645.

The rotating part 650 may be coupled to the second rotating shaft 640. That is, the rotation unit 650 and the second gear 645 are both axially coupled to the second rotation shaft 640, so that the rotational force of the first rotation shaft 630 is the second gear 645 and the second It may be transmitted to the rotating part 640 through the rotating shaft 640.

At least a portion of the rotating part 650 may be positioned through the gear box 620. A part of the rotating part 650 is located above the upper surface of the gear box 620, and the other part is located inside the gear box 620.

By the arrangement of the rotating portion 650, when the rotating portion 650 is rotated, rotation of the body portion 310 of the transfer module 300 coupled to the upper portion of the rotating portion 650 is transmitted to the gear box 620. Interference can be prevented.

The rotating part 650 may be a reducer. In one example, the rotating part 650 may be a reduction gear.

At this time, the reduction gear 615 may be defined as a first reduction gear or a first reduction gear, and the rotation unit 650 may be defined as a second reduction gear or a second reduction gear.

When the driving motor 610 is driven, the rotation driving unit 600 is decelerated by the first reduction gear 615 and the second reduction gear 650 to generate a desired target rotation speed or target torque.

In addition, the rotation of the rotation unit 650 is possible with only one tenth of the force exerted by the capacity of the driving motor 610.

The rotating part 650 may be combined with the body part 310 of the transfer module 300. In detail, the main body 310 may be coupled to the upper side of the rotating part 650.

In more detail, the main body part 310 is coupled to the upper surface of the rotation part 650 so that the second rotation axis 640 which is the rotation axis of the rotation part 650 and the center C1 of the main body part 310 coincide. Can be.

Here, the second rotation shaft 640 may be defined as an “output shaft” that rotates the transfer module 300 by the rotational force of the driving motor 610.

When the rotational force of the first rotating shaft 630 is transmitted to the rotating part 640 by the driving of the driving motor 610, the body part 310 may rotate as the rotating part 640 rotates.

When the main body 310 is rotated relative to the center C1, the transfer arm 330 extending from the main body 310 is rotatable.

By the forward or reverse rotation of the driving motor 610, the main body 310 rotates clockwise or counterclockwise relative to the center C1, so that the transfer arm 330 is clockwise or counterclockwise. Can rotate in any direction.

Here, the clockwise direction is understood as a clockwise direction in the direction of looking at the transfer module 300 from the upper press frame 105 or the slide 115.

The bearing 655 may support the rotating part 650 or the second rotating shaft 640. The second rotating shaft 640 or the rotating part 650 may be easily rotated by the bearing 655.

The transfer module 300 is provided on the main body 310 rotated by the rotation driving unit 600, the transfer arm 330 extending outward from the main body 310, and the transfer arm 330. It may include a mounting portion 360.

The mounting part 360 may be rotated to be disposed in correspondence to the rotational position of the transfer arm 330. In detail, the mounting part 360 may be rotated when the transfer arm 330 is rotated from one upper mold upward to the other lower mold. Detailed description of the rotation of the mounting unit 360 will be described later.

The transfer module 300 is axially coupled to the rotating cylinder 340 provided in the transfer arm 330, the cylinder rotating shaft 345, which is the rotating shaft of the rotating cylinder 340, and the cylinder rotating shaft 345, and the mounting unit The mounting plate 345 on which the 360 is positioned may be further included.

The main body 310 may be located above the gear box 620. In detail, the body portion 310 may be located above the rotating portion 650.

The main body part 310 may be connected to an upper surface of the rotation part 650. The body portion 310 is coupled to the upper surface of the rotating portion 650 by a fastening member or the like, and is rotatable together when the rotating portion 650 is rotated.

The lower surface of the main body 310 may be spaced a predetermined distance from the upper surface of the gear box 620. As the lower surface of the body portion 310 and the upper surface of the gear box 620 are separated, the body portion 310 can rotate smoothly without interfering with the gear box 620.

The center C1 of the main body 310 may be aligned with the second rotation axis 640 which is the center of the rotation part 650 in the vertical direction.

The transfer arm 330 may be formed to extend outward in a radial direction based on the center C1 of the body portion 310. When the main body 310 rotates relative to the center C1, the transfer arm 330 may rotate relative to the center C1.

The transfer arm 330 may include a first transfer arm 331, a second transfer arm 333 and a third transfer arm 335.

The first transfer arm 331, the second transfer arm 333, and the third transfer arm 335 may be formed with the same length.

In detail, the length of the transfer arm 330 may be a length such that when the transfer module 300 is rotated, the mounting plate 350 is located at the center of the lower mold 212,214,216,218.

In more detail, by the length of the transfer arm 330, when the transfer module 300 rotates, the cylinder rotation shaft 345 may be located above the central portion of the lower mold 212,214,216,218.

The rotating cylinder 340 may be formed at an end of the transfer arm 330. In detail, one end of the transfer arm 330 may be coupled to the rotating cylinder 340, and the other end may be coupled to the body portion 310.

The cylinder rotation shaft 345 may be formed by penetrating the transfer arm 330 up and down. The rotating cylinder 340 may be coupled to the cylinder rotating shaft 345 and rotated.

The rotating cylinder 340 may be located on the lower surface of the transfer arm 330. The rotating cylinder 340 is disposed to rotate in a state coupled to the cylinder rotating shaft 345 on the lower surface of the transfer arm 330.

The cylinder rotating shaft 345 may pass through the rotating cylinder 340 and extend downward from the rotating cylinder 340. The cylinder rotating shaft 345 extending downward may be axially coupled to the mounting plate 350.

The mounting plate 350 may be formed in a polygonal shape. In one example, the mounting plate 350 may be formed in a rectangular plate shape.

Alternatively, the mounting plate 350 may be formed corresponding to the shape of the workpiece 700, but is not limited thereto.

The horizontal width of the mounting plate 350 may be shorter than the distance between each of the plurality of lower molds 212,214,216,218.

In detail, the length of one corner of the mounting plate 350 may be shorter than the distance between a plurality of lower molds disposed adjacent to each other among the plurality of lower molds.

That is, when the mounting plate 350 is disposed at a mounting position to be described later, the mounting plate 350 is positioned above the spaced apart space formed between the plurality of lower molds disposed adjacent to each other, and the work station. It can be located outside of (W).

Therefore, when the upper mold unit 250 is elevated or lowered, the upper mold unit 250 is prevented from interfering with the mounting plate 350 and thus can be smoothly moved up and down.

In the mounting plate 350, a mounting portion 360 for selectively mounting the workpiece 700 may be formed. A plurality of mounting portions 360 may be provided.

In one example, the mounting portion 360 may be provided in four, but is not limited thereto.

The plurality of mounting portions 360 may be spaced apart along the rim of the mounting plate 350.

The mounting part 360 may be positioned adjacent to the edge of the mounting plate 350. In detail, the mounting part 360 may be positioned adjacent to each vertex of the mounting plate 350.

Alternatively, the mounting portion 360 may be coupled to be positioned outside the rim portion of the mounting plate 350 by a separate mounting member (not shown).

That is, an imaginary figure formed by the plurality of mounting parts 360 is formed to be equal to or larger than the size of the mounting plate 350 to easily mount and transport the workpiece 700.

In other words, the area in which the work piece 700 is mounted is relatively increased by the arrangement of the plurality of mounting parts 360, so that the mount part 360 can stably mount the work piece 700.

The transfer module 300 includes a rotation control unit 342 that controls rotation of the rotation cylinder 340, a stopper 344 that limits the rotation angle of the rotation cylinder 340, and the mounting unit 360. A mounting control unit (not shown) for adjusting mounting or dismounting may be further included.

The rotation adjustment part 342 and the stopper 344 may be provided in the rotation cylinder 340. In one example, the rotation control unit 342 and the stopper 344 may be located inside the rotation cylinder 340.

As another example, the rotation control unit 342 and the stopper 344 may be provided on the transfer arm 330, but are not limited thereto.

The rotation control unit 342 may be a solenoid valve. When the rotation control unit 342 is controlled by the control unit 180, a rotation direction of the rotation cylinder 340 may be adjusted.

When the rotation adjustment unit 342 adjusts the rotation of the rotation cylinder 340, the rotation angle may be limited by the stopper 344. In detail, when the rotating cylinder 340 is rotated by the rotation adjusting part 342, the rotating cylinder 340 may be stopped after a certain angle by the stopper 344.

Accordingly, the rotation cylinder 340 may be rotated by a specific angle (target angle) by the rotation adjustment part 342 and the stopper 344, and the mounting plate 350 may be rotated by the cylinder rotation shaft 345. It may stop after rotating by the specific angle.

The mounting part 360 may be vacuumed or released by the mounting control part to adsorb or desorb the workpiece.

However, the mounting unit 360 may be applied as long as it can selectively mount the workpiece in addition to the method of forming the vacuum, and is not limited thereto.

Hereinafter, a process in which the first to fourth processes of the press device 10 are performed will be described.

Fig. 7 is an upward perspective view of the press device with the upper press unit removed.

Referring to FIG. 7, a work station W may be formed between the upper mold unit 250 and the lower mold unit 210. In detail, the work station W may include first, second, third, and fourth work stations W1, W2, W3, W4 located between each upper mold 252, 254, 256, 258 and

lower mold

212, 214, 216, 218. have.

The first work station W1 is located between the first upper mold 252 and the first lower mold 212, and a space in which a first process of first processing the workpiece 700 is performed Can be defined as

The second work station W2 is located between the second upper mold 254 and the second lower mold 214, and a space in which a second process of second processing the workpiece 700 is performed. Can be defined as

The third work station W3 is located between the third upper mold 256 and the third lower mold 216, and is a space in which a third process of third processing the workpiece 700 is performed. Can be defined as

The fourth work station W4 is located between the fourth upper mold 258 and the fourth lower mold 218, and a space in which a fourth process of fourth processing the workpiece 700 is performed. Can be defined as

Referring to FIG. 7, the first work station W1 is located at the bottom left, and the second, third and fourth work stations W2, W3 and W4 may be arranged in a clockwise order.

In addition, in the direction of the arrow shown in FIG. 7, the first, second, third, and fourth work stations W1, W2, W3, and W4 are positioned with the workpiece 700 brought in by the carrying robot 50. Can be understood in order.

The workpiece 700 is a first workpiece 710, a second workpiece 720, a third workpiece 730 according to the order carried by the carry-in robot 50 for convenience of explanation. And a fourth workpiece 740.

Here, the first, second, third, and fourth means only the order in which they are brought in. When the workpiece 700 in which the first, second, third, and fourth processes are performed is carried out by the carrying out robot 60, the The operation of the press device 10 is not stopped, and a new workpiece 700 may be continuously brought into the first work station W1.

Until the workpiece 700 loaded on the stacker 30 is carried into the press apparatus 10 and taken out to the conveyor 70, the press apparatus 10 first, 2, 3, 4 The process can be performed continuously automatically.

In addition, each time a work piece is finished, the work piece 700 loaded on the stacker 30 is brought into the press device 10, so that different processes of up to 4 work pieces 700 are performed. It can be performed simultaneously.

As an example, the workpiece 700 loaded on the stacker 30 based on FIG. 7 is carried into the first work station W1 from the front of the press device 10, and the first, second, and third , Workpiece 700 in which 4 processes are completed may be taken forward from the fourth work station W4.

8 is a view showing a process in which a first workpiece is input to a first work station according to an embodiment of the present invention, and FIG. 9 is a view showing a process in which the upper mold unit descends and the first process is performed , FIG. 10 is a view showing a process in which the transfer module rotates and elevates to mount a workpiece, and FIG. 11 shows a process in which the transfer module is rotated to move the position of the mounted first workpiece and dismount it. It is a drawing shown.

8 to 11, the carrying robot 50 may carry the first workpiece 710 in the form of a raw material into the first work station W1.

FIG. 8(A) is a view in which the transfer robot inputs the first workpiece to the first work station, and FIG. 8(B) is a state in which the transfer robot is placed in place after the transfer of the first workpiece It is a diagram showing.

8(A) and 8(B), the carrying robot 50 carries the first workpiece 710 loaded on the stacker 30 into the first work station W1. Thus, it can be returned to its original position after being seated on the upper surface of the first lower mold 212.

In the process of bringing in the first workpiece 710 by the carrying robot 50, the upper mold unit 250 may be located in the open position P1. The open position (see FIG. 9, P1) may be understood as a position in which the upper mold unit 250 is moved upward by the guide frame.

In the process of bringing in the first workpiece 710 by the carrying robot 50, the transfer module 300 may be positioned at a first height P3. The first height P3 may be understood as the height at which the transfer module 300 is raised by the elevation driver 500.

In addition, the height of the transfer module 300 at the first height P3 may be smaller than the upper mold unit 250 at the open position P1. That is, even if the transfer arm 330 is rotated by the rotation driving part 600 at the first height P3, since the upper mold unit 250 is spaced apart, the transfer arm 330 is the upper mold unit Interference with 250 is prevented.

In the process of bringing in the first workpiece 710 by the carrying robot 50, the transfer arm 330 may be located at the first position R1. The first position R1 may be understood as a position in which the first, second, and third transfer arms 330 do not overlap the lower mold unit 210 or the upper mold unit 250 in the vertical direction.

In detail, the first, second, and third transfer arms 330 in the first position R1 are located above the separation space formed between the plurality of

lower molds

212, 214, 216, 218, and the work station W It can be located outside of.

In more detail, in the first position R1, the first transfer arm 331 is located above the separation space between the first lower mold 212 and the second lower mold 214, and the second transfer The arm 333 is located above the separation space between the second lower mold 214 and the third lower mold 216, and the third transfer arm 335 is the third lower mold 216 and It may be located above the separation space between the fourth lower mold 218.

In other words, when the transfer arm 330 is positioned at the first position R1, even if the slider 115 moves up and down by the guide frame, the upper mold unit 250 is provided with the transfer arm 330 ) And the mounting unit 360 can be moved up and down without interference.

In the process of bringing in the first workpiece 710 by the carrying robot 50, the mounting plate 350 and the mounting unit 360 may be positioned at a fixed position.

In detail, in the fixed position, the mounting plate 350 and the mounting portion 360 are located above the separation space formed between the plurality of lower molds 212,214,216,218, to be located outside the work station W Can.

The fixed position is a position for the mounting plate 350 and the mounting unit 360 to wait for mounting, and may be defined as a “standby position”.

The standby position may be a position in which the mounting plate 350 is disposed in the extending direction of the transfer arm 330.

As shown in Figure 9, the transfer module 300 maintains the first height (P3) and the first position (R1), the mounting plate 350 and the mounting portion 260 is located in the fixed position In the state, the upper mold unit 250 may be lowered to the closed position P2 by the control unit 180.

The closed position (P2) can be understood as a position where the press process can be performed by the slide 115 being lowered by the guide frame so that the upper mold unit 250 and the lower mold unit 210 are matched. Can.

In other words, the closed position P2 is understood to be a position where the space between the upper mold unit 250 and the lower mold unit 210 is closed.

When the slide 115 is moved up and down by the guide frame, the upper mold unit 250 may move between the open position P1 and the closed position P2.

As the upper mold unit 250 is lowered to the closed position P2, the first workpiece 710 positioned in the first work station W1 is subjected to a first process, so that the first processing unit can be processed. have.

After a certain period of time, the control unit 180 may control the upper mold unit 250 to move up and down to the open position P1.

FIG. 10(A) is a view showing a process in which the transfer arm is moved to a second position by the rotation driving unit, and FIG. 10(B) is a view showing a state in which the mounting unit is mounted on the workpiece.

10(A) and 10(B), the transfer arm 330 may be positioned at the second position R2 by the rotation driving unit 600. In detail, the control unit 180 may control the rotation driving unit 600 such that the transfer arm 330 is rotated from the first position R1 to the second position R2.

10, the second position R2 may be a position in which the transfer arm 330 is rotated counterclockwise from the first position R1 by a first angle. The first angle may be an angle having an angle difference within a set range of 45°.

For example, the setting range may be within 5°.

In the second position (R2), the transfer arm 330 may be positioned above the lower mold unit 210.

In the second position R2, the plurality of transfer arms 330 may be positioned above the lower mold except one lower mold among the plurality of lower molds. At this time, the lower mold may be a lower mold located at the fourth work station W4.

In detail, the first transfer arm 331 may be located above the central portion of the first lower mold 212 and the second transfer arm 333 may be located above the central portion of the second lower mold 214. have.

In addition, in the second position R2, the third transfer arm 335 may be located above the central portion of the third lower mold 216.

The control unit 180 may control the mounting plate 350 and the mounting unit 360 to be positioned at the mounting position while the transfer arm 330 is positioned at the second position R2.

In detail, even if the transfer arm 330 is rotated, the mounting plate 350 and the mounting part 360 are rotated so as to come to the mounting position where mounting and dismounting of the workpiece 700 is easy. Can be controlled.

The mounting position may be a position in which the mounting plate 350 is arranged to form a set angle with the transfer arm 330. In detail, the set angle may be an angle having an angle difference within 45° and a set range.

For example, the setting range may be within 5°.

In addition, the mounting position may be understood as a position in which the edge or corner of the mounting plate 350 is arranged to be parallel or perpendicular to the side end of the lower mold unit 210 or the workpiece 700.

In detail, the arrangement of the mounting plate 350 when the transfer arm 330 is positioned above one lower mold among the plurality of lower molds is when the transfer arm 330 is positioned above the other lower mold. It may be the same as the arrangement of the mounting plate 350.

That is, depending on the rotational direction and rotational angle of the transfer arm 330, the degree of rotational direction and rotational angle for the mounting plate 350 and the mounting portion 360 to be disposed at the mounting position may be different.

For example, when the transfer arm 330 rotates from the first position R1 to the second position R2, the mounting plate 350 of the first transfer arm 331 and the third transfer arm 335 Can be rotated counterclockwise to have a 45° angle difference within the set range.

For example, the setting range may be within 5°.

The mounting plate 350 of the second transfer arm 333 can be rotated to have an angle difference within a set range of 45° in the clockwise direction.

For example, the setting range may be within 5°.

In spite of the clockwise or counterclockwise rotation of the transfer arm 330, when the mounting plate 350 and the mounting portion 360 do not rotate, the workpiece 700 is unstablely mounted or mounted. The workpiece 700 may be improperly seated on the upper surface of the lower mold unit 210.

For example, when the mounting plate 350 and the mounting portion 360 do not rotate, the biased portion is mounted at the center portion, not the center portion of the workpiece 700 according to the rotational position of the transfer arm 330. Problems may arise.

As another example, when the mounting plate 350 and the mounting portion 360 do not rotate, the workpiece 700 mounted by the mounting portion 360 in one lower mold is seated at a position where the other lower mold is separated. Problems may arise.

In this case, in order to perform the process, since the work force is forced to be seated in the appropriate position on the lower mold, the continuous process and automation of the press device 10 are impossible. That is, not only the productivity is lowered, but also inefficient and economical disadvantages exist.

On the other hand, when the rotation control of the mounting plate 350 and the mounting portion 360 according to an embodiment of the present invention, the mounting portion 360 can not only stably mount the workpiece 700, but also the transfer arm ( Since it is always located in the mounting position according to the rotational position of 330, the workpiece 700 can be seated at an appropriate position among the upper surfaces of the lower mold unit 210.

Therefore, it is not only necessary to install and unmount the workpiece 700, but also to input human resources when performing each process. Since continuous processes are possible, productivity is increased and production costs are reduced.

The plurality of mounting plates 350 positioned on the plurality of transfer arms 330 may be disposed parallel to each other at the mounting position.

In the state in which the mounting plate 350 and the mounting part 360 are disposed at the mounting position, the lifting driver 500 may be controlled such that the transfer arm 330 descends to the second height P4.

The second height P4 may be defined as a height at which the mounting portion 360 is capable of mounting or dismounting the workpiece 700.

Therefore, the elevation driver 500 may be controlled to move up and down between the first height P3 and the second height P4.

As the transfer arm 330 descends to the second height P4 while the mounting plate 350 and the mounting portion 360 are disposed in the mounting position, the mounting portion 360 is the first workpiece The 710 can be mounted stably.

In the state in which the mounting part 360 stably mounts the first workpiece 710, the transfer arm 330 may be controlled to elevate to the first height P3.

FIG. 11(A) is a view showing a process in which the transfer arm is moved to a third position by the rotation driving unit, and FIG. 11(B) is a view showing a state in which the mounting unit is dismounted from the workpiece. .

11(A) and 11(B), in the state in which the mounting portion 360 is mounted on the first workpiece 710, the transfer arm 330 is rotated by the rotation driving unit 600. It may be located in the third position (R3). In detail, the control unit 180 may control the rotation driving unit 600 such that the transfer arm 330 is rotated from the second position R2 to the third position R3.

11, the third position R3 may be a position where the transfer arm 330 rotates clockwise from the second position R2 by a second angle. The second angle may be an angle having an angle difference within 90° and a set range.

For example, the setting range may be within 5°.

The second angle may be twice the first angle.

In the third position (R3), the transfer arm 330 may be located above the lower mold unit 210.

In detail, the first transfer arm 331 may be located above the central portion of the second lower mold 214, and the second transfer arm 333 may be located above the central portion of the third lower mold 216. have.

Further, in the third position R3, the third transfer arm 335 may be positioned above the central portion of the fourth lower mold 218.

The control unit 180 may control the mounting plate 350 and the mounting unit 360 to be disposed in the mounting position while the transfer arm 330 is positioned at the third position R3.

The arrangement of the mounting plate 350 in the third position R3 may be controlled to be the same as the arrangement in the second position R2.

In the state in which the mounting plate 350 and the mounting portion 360 are arranged in the mounting position, the lifting driver 500 may be controlled so that the transfer arm 330 descends to the second height P4. .

When the transfer arm 330 is lowered to the second height (P4), the mounting portion 360 can be mounted on the upper surface of the second lower mold 214 by dismounting the first workpiece 710. have. That is, the first workpiece 710 is moved from the upper surface of the first lower mold 214 to the upper surface of the second lower mold 214 by the transfer arm 330 and the mounting portion 360.

When the first workpiece 710 is dismounted from the mounting unit 360, the lifting/lowering driving unit 500 may be controlled so that the transfer arm 330 rises to the first height P3.

At this time, while the transfer arm 330 moves up and down between the first height P1 and the second height P2 by the control unit 180, the first work station W1 has a second blood. The workpiece 720 may be brought in.

Hereinafter, a process in which the first and second processes are simultaneously performed after the transfer of the workpiece 700 is described. In the above process, the differences are mainly described as there are differences only in the placement of the second workpiece 720 and the positions of the first and

second workpieces

710 and 720.

12 is a view showing a process in which a second workpiece is introduced into a first work station according to an embodiment of the present invention, and FIG. 13 is a view showing the rotation of the transfer module and the process of raising and lowering the upper mold unit. , FIG. 14 is a view showing a process in which the transfer module is rotated to mount the first and second workpieces, and FIG. 15 is after the transfer module is rotated to move and dismount the adsorbed first and second workpieces It is a diagram showing a process.

12 to 15, the carrying robot 50 carries a second workpiece 720 in the form of a raw material into the first work station W1, and the upper surface of the first lower mold 212 After you settle in, you can return to its original position.

In the process of bringing in the second workpiece 720 by the carrying robot 50, the upper mold unit 250 is located in the open position P1, and the transfer arm 330 is located in the third position ( R3).

Unlike the process of carrying in the first workpiece 710, when the second workpiece 720 is brought in, the transfer arm 330 is in the third position R3, so the transfer arm 330 Even if the space between the first height P3 and the second height P4 is elevated, the second workpiece 720 may be easily brought in.

13(A) is a view showing a process in which the transfer arm moves to the first position by the rotation driving unit, and FIG. 13(B) is a process in which the upper and lower mold units are lowered to perform the first and second processes. It is a diagram showing.

13(A), after the second workpiece 720 is brought in, the transfer arm 330 may be controlled to move from the third position R3 to the first position R1. Can.

In addition, the rotation cylinder 340 and the rotation adjustment unit 342 may be controlled by the control unit 180 such that the mounting plate 350 and the mounting unit 360 are positioned at the fixed position (standby position).

13(B), as the upper mold unit 250 is lowered to the closed position P2, the first workpiece 710 and the second workpiece 720 are respectively second. By performing the process and the first process, the second processing and the first processing can be performed.

14(A) is a view showing a process in which the transfer arm moves to a second position by the rotation driving unit, and FIG. 14(B) is a view showing a state in which the mounting unit is mounted with the workpiece.

14(A) and 14(B), after performing the first and second processes, the transfer arm 330 rotates from the first position R1 to the second position R2. Can be controlled.

As the transfer arm 330 descends to the second height P4 while the mounting plate 350 and the mounting portion 360 are disposed in the mounting position, the mounting portion 360 is the first workpiece 710 and the second workpiece 720 can be stably mounted.

15(A) is a view showing a process in which the transfer arm moves to a third position by the rotation driving unit, and FIG. 15(B) is a view showing a process in which the mounting unit dismounts the workpiece. .

15(A) and 15(B), in the state in which the mounting unit 360 is equipped with the first and

second workpieces

710 and 720, the transfer arm 330 is the rotation driving unit 600 It can be located in the third position (R3) by.

In addition, when the transfer arm 330 is positioned at the third position R3, the control unit 180 may control the mounting plate 350 and the mounting unit 360 to be disposed in the mounting position.

Under the control of the control unit 180, the first workpiece 710 mounted on the mounting unit 360 is from the second lower mold 214 to the upper surface of the third lower mold 216, the first 2 The workpiece 720 may be transferred from the first lower mold 212 to the upper surface of the second lower mold 214.

At this time, while the transfer arm 330 is moved up and down between the first height (P1) and the second height (P2) by the control unit 180, the first work station (W1) has a third blood The workpiece 730 may be brought in.

Hereinafter, a process in which the first, second, and third processes are performed simultaneously after the transfer of the workpiece 700 is described. In the above process, the difference is mainly described because there is a difference only in the placement of the third workpiece 730 and the positions of the first, second, and

third workpieces

710, 720, and 730.

FIG. 16 is a view showing a process in which a third workpiece is introduced into a first work station according to an embodiment of the present invention, and FIG. 17 shows that the upper mold unit descends after the transfer module is rotated, and the first, second, 3 is a view showing a process in which the process is performed, and FIG. 18 is a view showing a process in which the transfer module is rotated to mount the first, second, and third workpieces, and FIG. 19 is the transfer module is rotated to mount It is a diagram showing the process of dismounting a first, second, or third workpiece.

Referring to FIGS. 16 to 19, the carrying robot 50 carries a third workpiece 730 in the form of a raw material into the first work station W1, and the upper surface of the first lower mold 212 After you settle in, you can return to its original position.

In the process of bringing in the third workpiece 730 by the carrying robot 50, the upper mold unit 250 is located in the open position P1, and the transfer arm 330 is located in the third position ( R3).

17(A) is a view showing a process in which the transfer arm moves to the first position by the rotation driving unit, and FIG. 17(B) is the first, second, and third processes performed by the upper mold unit descending. It is a diagram showing the process.

17(A), after the third workpiece 730 is brought in, the transfer arm 330 is controlled to be moved from the third position R3 to the first position R1. Can.

As shown in Figure 17 (B), as the upper mold unit 250 is lowered to the closed position (P2), the first workpiece 710, the second workpiece 720 and the third skin The processed object 730 may be subjected to third processing, second processing, and first processing, respectively, by performing a third process, a second process, and a first process.

FIG. 18(A) is a view showing a process in which the transfer arm moves to a second position by the rotation driving unit, and FIG. 18(B) is a view showing a state in which the mounting unit is mounted with the workpiece.

18(A) and 18(B), after performing the first, second, and third processes, the transfer arm 330 is transferred from the first position R1 to the second position R2. Can be controlled to rotate.

As the transfer arm 330 descends to the second height P4 while the mounting plate 350 and the mounting portion 360 are arranged in the mounting position, the mounting portion 360 is the first and second ,3 processed objects (710,720,730) can be mounted stably.

19(A) is a view showing a process in which the transfer arm moves to a third position by the rotation driving unit, and FIG. 19(B) is a view showing a process in which the mounting unit dismounts the workpiece. .

Referring to Figure 19 (A) and Figure 19 (B), in the state in which the mounting portion 360 is mounted on the first, second, and

third workpieces

710, 720, 730, the transfer arm 330 is the rotary drive ( 600) may be located at the third position R3.

The controller 180 may control the elevating driving unit 600 such that the transfer arm 330 descends to the second height P4 and then elevates to the first height P3.

In this process, the mounting part 360 releases the mounting state of the first, second, and

third workpieces

710, 720, and 730 to release the first, second, and

third workpieces

710, 720, and 730 into the fourth lower mold 218. , It can be seated on the third lower mold 216 and the second lower mold 214.

That is, the first workpiece 710 mounted on the mounting part 360 is the upper surface of the fourth lower mold 218 from the third lower mold 216, and the second workpiece 720 is the It may be transferred from the second lower mold 214 to the upper surface of the third lower mold 216.

And, the third workpiece 730 may be transferred from the first lower mold 212 to the upper surface of the second lower mold 214.

At this time, while the transfer arm 330 is moved up and down between the first height (P1) and the second height (P2) by the control unit 180, the first work station (W1) has a fourth blood The workpiece 740 may be brought in.

Hereinafter, a process in which the first, second, third, and fourth processes are simultaneously performed after the transfer of the workpiece 700 is described. In the above process, the difference is mainly described because there is a difference only in the introduction of the fourth workpiece 740 and the positions of the first, second, third, and

fourth workpieces

710, 720, 730, and 740.

20 is a view showing a process in which a fourth workpiece is input to a first work station according to an embodiment of the present invention, and FIG. 21 is a first, second, after the transfer module rotates, the upper mold unit descends 3, 4 is a process showing a process, and FIG. 22 is a view showing a process in which the transfer module is rotated to mount the second, third, and fourth workpieces and the process of taking out the first workpiece, and FIG. 23 is a view showing a state in which the first workpiece is taken out and loaded.

20 to 23, the carrying robot 50 carries the fourth workpiece 740 in the form of a raw material into the first work station W1, and thus the upper surface of the first lower mold 212 After you settle in, you can return to its original position.

In the process of bringing in the fourth workpiece 740 by the carrying robot 50, the upper mold unit 250 is located in the open position P1, and the transfer arm 330 is located in the third position ( R3).

21(A) is a view showing a process in which the transfer arm moves to the first position by the rotation driving unit, and FIG. 21(B) is a first, second, third, and fourth process in which the upper mold unit descends. It is a diagram showing the process performed.

As shown in FIG. 21(A), after the fourth workpiece 740 is brought in, the transfer arm 330 is controlled to move from the third position R3 to the first position R1. Can.

As shown in Figure 21 (B), as the upper mold unit 250 is lowered to the closed position (P2), the first workpiece 710, the second workpiece 720, the third skin The work piece 730 and the fourth work piece 740 may be processed by the fourth process, the third process, the second process, and the first process, respectively, so that the fourth process, the third process, the second process, and the first process can be performed. have.

22(A) is a view showing a process in which the transfer arm moves to a second position by the rotation driving unit, and FIG. 22(B) is a view showing a state in which the mounting unit is mounted with the workpiece.

22(A) and 22(B), after the first, second, third, and fourth processes are performed, the transfer arm 330 is transferred from the first position R1 to the second position ( R2).

As the transfer arm 330 descends to the second height P4 while the mounting plate 350 and the mounting portion 360 are arranged in the mounting position, the mounting portion 360 is the second, third , 4 processed objects (720,730,740) can be mounted stably.

In the state in which the mounting part 360 stably mounts the second, third, and

fourth workpieces

720, 730, and 740, the transfer arm 330 may be controlled to elevate to the first height P3.

While the transfer arm 330 is positioned at the second position R2, while the transfer arm 330 moves up and down the first height P3 and the second height P4, the take-out robot ( 60) may take out the first workpiece 710 from the fourth work station W4.

The transport robot 60 may transfer the first workpiece 710 to the conveyor 70. At this time, the first workpiece 710 may be understood as a finished product in which the first, second, third, and fourth processing is performed.

When the first workpiece 710 is taken out from the fourth work station W4, the transfer arm 330 rotates to the third position R3, and then descends to the second height P4. The second, third and

fourth workpieces

720, 730, and 740 may be dismounted from the mounting unit 360.

While the transfer arm 330 elevates the first and second heights P3 and P4, the workpiece 700 in the form of a raw material may be brought into the first work station W1. , The above process can be repeated.

24 is a view showing the overall process flow of the press device.

Referring to FIG. 24, as another embodiment of the present invention, the workpiece 700 loaded on the stacker 30 is the first work station W1 on the left side of the press device 10 based on FIG. 24. , And the first, second, third, and fourth processes 700 to be processed may be taken out from the fourth work station W4 to the right.

The taken-out workpiece 700 (finished product) may be transported by the conveyor 70.

That is, by the press device 10, by bringing in the workpiece 700, after each process, the transfer for the next process, the multi-process is completed, the workpiece 700 is carried out all continuously, up to four The process of the workpiece can be automatically performed simultaneously and continuously, thereby reducing the required manpower.

In addition, by the automation, simultaneous multi-process and continuous process, production cost and production time can be reduced, thereby increasing productivity.

Claims

A plurality of lower molds constituting the lower mold unit;

A plurality of upper molds constituting an upper mold unit which is installed to be able to move upwards and downwards of the lower mold unit, and installed to match each of the plurality of lower molds;

A transfer module for transferring a work piece sequentially pressed by the plurality of upper molds and the plurality of lower molds; And

It includes a driving unit for driving the transfer module to rotate and elevate,

The transfer module,

A mounting portion which selectively mounts the workpiece and is rotatably provided; And

It includes a transfer arm extending in the radial direction from the driving portion, the mounting portion is located at one end,

A press device in which the mounting portion is rotated so as to be disposed corresponding to the rotational position of the transfer arm.
According to claim 1,

The transfer module,

Located on one end of the transfer arm, further comprising a mounting plate on which the mounting portion is formed,

A plurality of the mounting portion is provided on the mounting plate,

The plurality of mounting portions are spaced apart along the rim portion of the mounting plate press device.
According to claim 2,

The mounting plate is provided in a rectangular plate shape,

The length of one edge of the mounting plate is less than the distance between a plurality of lower molds disposed adjacent to the plurality of lower molds.
According to claim 2,

A spacing space is formed between a plurality of adjacent lower molds among the plurality of lower molds,

When the upper mold unit is lowered, the transfer arm is disposed above the separation space, and the mounting plate is rotated to be placed in a standby position,

The standby position is a press device, characterized in that the mounting plate is a position arranged in the extending direction of the transfer arm.
According to claim 2,

When the transfer arm is positioned above the lower mold, the mounting plate is rotated to be placed in the mounting position,

The mounting position is a press device, characterized in that the mounting plate is positioned to form a set angle with the transfer arm.
The method of claim 5,

The set angle is an angle having a difference within the set range of 45 °,

The setting range is a press device within 5°.
The method of claim 5,

The arrangement of the mounting plate when the transfer arm is positioned above the lower mold is the same press device as the arrangement of the mounting plate when the transfer arm is positioned above the other lower mold.
The method of claim 7,

The plurality of lower molds are arranged in the circumferential direction around the driving unit,

A plurality of transfer arms are provided,

The number of transfer arms is one press device, characterized in that less than the number of the lower mold.
The method of claim 8,

A press device in which a plurality of mounting plates positioned in the plurality of transfer arms are arranged parallel to each other in the mounting position.
According to claim 1,

The transfer module,

A body part coupled to the upper side of the driving part and connected to the other end of the transfer arm;

It is located at one end of the transfer arm, and further comprises a rotating cylinder that is rotatably provided around the cylinder rotation axis,

The mounting plate is a press device that is axially coupled to the cylinder rotating shaft below the rotating cylinder.
The method of claim 10,

The transfer module,

It includes a rotation adjusting unit for adjusting the rotation of the rotating cylinder,

The rotation control unit is a solenoid valve press device.
The method of claim 11,

The transfer module,

A press device further comprising a stopper to stop the rotating cylinder at the set angle when rotating the rotating cylinder.
According to claim 1,

Between the plurality of lower molds and upper molds are formed a plurality of work stations in which the process of processing the workpiece is performed,

The workpiece is sequentially pressed to the plurality of work stations by the transfer module.
The method of claim 13,

The plurality of transfer arms are press devices that are disposed perpendicular to each other.
The method of claim 14,

The transfer arm is rotated so as to be located above the lower mold, and then elevates for mounting and dismounting of the workpiece,

When the upper mold unit moves up and down, the plurality of transfer arms are press devices arranged at a first position (R1) above the separation space.
The method of claim 15,

The driving unit is driven to move the plurality of transfer arms from the first position R1 to a second position R2 rotated by a first angle in one direction,

In the second position (R2), the plurality of transfer arms are positioned at the work station, and the mounting plate is disposed at the mounting position.
The method of claim 16,

In the state where the plurality of transfer arms are located in the second position R2, the plurality of transfer arms are positioned above the lower mold except one lower mold among the plurality of lower molds,

The one lower mold is a press device that is a lower mold that performs the last order of press processing.
The method of claim 17,

The driving unit is driven to move the plurality of transfer arms from the second position R2 to a third position R3 rotated by a second angle in the other direction,

In the third position (R3), each of the plurality of transfer arms is located above the work station different from the second position (R2),

The mounting plate, the press device is rotated so that the arrangement in the third position (R3) is the same as the arrangement in the second position (R2).
The method of claim 16,

The one direction is counterclockwise,

The first angle is an angle having a difference between 45° and a set range,

The setting range is a press device within 5°.
The method of claim 19,

The other direction is clockwise,

The second angle is a press device that is twice the first angle.