JP6028181B2 - Work processing equipment - Google Patents

Description

  The present invention relates to a workpiece machining apparatus.

  2. Description of the Related Art Conventionally, as a workpiece processing apparatus that processes a workpiece so as to have a desired shape, for example, a press processing apparatus that processes a workpiece into a desired shape by pressing the workpiece with a plurality of molds is known. .

  A conventional press working apparatus is a very useful apparatus that can deform a workpiece into a desired shape with a relatively simple configuration, but it can perform press work even more efficiently. Such improvements are required. For example, when press-working a workpiece, it is necessary to form a predetermined space between the dies and place the workpiece at a predetermined position between the dies. If this step of arranging can be performed efficiently, it becomes possible to perform press processing more efficiently, and such an improvement is required. In addition, an identification mark may be formed on the surface of a pressed workpiece, but if this identification mark can be formed efficiently, the efficiency of the workpiece machining process including pressing can be improved. It becomes possible to plan.

  An object of this invention is to provide the workpiece processing apparatus which can process efficiently with respect to a workpiece | work.

The above object of the present invention is a workpiece processing apparatus for processing a workpiece formed from a synthetic resin material, a metal material, or a material obtained by combining a synthetic resin material and a metal material, and press means for performing press processing And a work supply means for supplying a work to the press means, the press means having a lower mold on which the work is placed, and a left-right direction across the work placed on the lower mold A right mold and a left mold disposed on both sides, and an upper mold disposed above the lower mold, and at least one of the right mold and the left mold, The upper mold is configured to be reciprocally movable between a press position where a press pressure is applied and a press standby position where no press pressure is applied, with respect to the workpiece placed on the lower mold. The workpiece supply means is In a state where at least one of the right mold and the left mold and the upper mold are arranged at the press standby position, the lower mold, the upper mold, the right mold, and the left mold supplying the workpiece toward a region surrounded by the mold, and more are achieved in the work machining apparatus, characterized in that by sliding over the lower mold for placing the workpiece on the lower mold.

  This workpiece processing apparatus supplies a workpiece toward an area surrounded by a lower die, an upper die, a right die, and a left die, and slides on the lower die to place the workpiece on the lower die. It is configured as follows. As a result, it becomes possible to arrange the workpiece at a predetermined position for performing press working extremely smoothly, and press work can be performed efficiently.

Another object of the present invention is a work processing apparatus for processing a pre-heated work formed from a synthetic resin material, a metal material, or a combination of a synthetic resin material and a metal material. A press means for performing processing; and a work supply means for supplying a work to the press means. The press means includes a lower mold on which the work is placed, and a work placed on the lower mold. A right mold and a left mold disposed on both sides in the left-right direction, and an upper mold disposed above the lower mold, and the right mold and the left mold At least one of the upper mold and the upper mold move reciprocally between a press position where a press pressure is applied and a press standby position where no press pressure is applied to the workpiece placed on the lower mold. Configured before and before The workpiece supply means includes the lower mold, the upper mold, and the right mold in a state where at least one of the right mold and the left mold, and the upper mold is disposed at a press standby position. A workpiece is supplied toward a region surrounded by the mold and the left mold, and the work can be placed on the lower mold by sliding on the lower mold. The right mold and the left mold In a state where at least one of the molds and the upper mold are arranged at the press standby position, the opposing surfaces of the right mold and the left mold are workpieces that slide on the lower mold. This is achieved by a workpiece machining apparatus in which a press standby position of at least one of the right mold and the left mold is set so as to also serve as a guide surface .

  By configuring the workpiece processing device in this way, when the lower mold is slid and supplied between the molds, the side surface of the workpiece is guided by the opposing surfaces of the right mold and the left mold. Thus, the workpiece can be reliably set at a predetermined position of the lower mold.

In addition, after the pressing means applies a pressing pressure to the workpiece, the upper die is moved away from the workpiece at a timing earlier than at least one of the right die and the left die is separated from the workpiece. It is preferable that it is comprised so that it may space apart.

  By adopting such a configuration, the upper die is removed from the workpiece while maintaining the state in which the right die and the left die hold the workpiece (the pressed state of the workpiece by the right die and the left die). Since they can be separated from each other, it is possible to effectively suppress the workpiece from moving upward as the upper die moves upward (the workpiece moves while attached to the upper die). It is possible to reliably leave the workpiece after pressing on the lower mold, and the workpiece can be efficiently taken out from the pressing means.

  The work processing apparatus further includes a work discharge means for discharging the work after the press processing by the press means, and the work discharge means includes the lower mold, the upper mold, the right mold, and the left mold. A discharge pusher portion capable of entering a region surrounded by the mold, wherein at least one of the right mold and the left mold, and the upper mold are arranged in a press standby position The discharge pusher portion presses a workpiece after press processing placed on the lower die, and slides on the lower die to discharge the workpiece from the lower die. Is preferred.

  By providing such a work discharging means, the work pressed by each mold can be efficiently discharged to the outside, and the workability of the press working can be improved.

  Moreover, it is preferable to further comprise a marking means for forming an identification mark at a predetermined position of the work after the press working by the pressing means. Alternatively, at least one of the lower die, the right die, the left die, and the upper die in the pressing means has a marking portion for marking an identification mark at a predetermined position of the workpiece when a press pressure is applied to the workpiece. Preferably it is formed. Moreover, it is preferable to further include a bending means for performing a predetermined bending process on the workpiece on which the identification mark is formed.

  In this way, by configuring the workpiece with the identification mark to be bent, the position where the identification mark is formed compared to the case where the identification mark is formed on a bent workpiece. Can be made uniform. More specifically, when forming an identification mark at a predetermined position on a bent workpiece, it is difficult to always support a curved / bent workpiece in a fixed posture. An error is likely to occur in the position. On the other hand, when the work processing apparatus is configured to include bending means for bending the work on which the identification mark is formed, the identification mark is formed in advance on the work before bending and bending that is easy to support. Therefore, it is possible to stabilize the formation position of the identification mark in the workpiece after bending.

  ADVANTAGE OF THE INVENTION According to this invention, the workpiece processing apparatus which can process a workpiece | work efficiently can be provided.

It is a block diagram which shows the structure of the workpiece processing apparatus which concerns on one Embodiment of this invention. It is a schematic structure front view of the press means with which the workpiece | work processing apparatus in FIG. 1 is provided. It is explanatory drawing for demonstrating operation | movement of the press means shown in FIG. It is a schematic block diagram which shows the AA cross section in Fig.2 (a). It is explanatory drawing for demonstrating operation | movement of the workpiece | work supply means shown in FIG. It is explanatory drawing for demonstrating operation | movement of the workpiece | work discharge means shown in FIG. It is a schematic plan view showing a modification of the workpiece machining apparatus shown in FIG. It is explanatory drawing explaining the structure of a marking means. It is explanatory drawing which shows the identification mark formation process by the marking means shown in FIG. It is a schematic block diagram which shows an example of the ink supply means with which the marking means shown in FIG. 8 is provided. It is explanatory drawing explaining an example of an action | operation of the marking means shown in FIG. It is explanatory drawing explaining an example of an action | operation of the marking means shown in FIG. FIG. 10 is a schematic cross-sectional view showing a BB cross section in FIG. It is explanatory drawing for demonstrating the shape change of the ink ball formed in the one end of an ink holding body, when the ink used in a marking process contains a volatile solvent. It is explanatory drawing for demonstrating an example of the effect by the marking apparatus shown in FIG. It is explanatory drawing which shows the other identification mark formation process by the marking apparatus shown in FIG. It is a schematic block diagram which shows an example of the lower metal mold | die for a bending process with which a bending means is provided.

  Hereinafter, a workpiece machining apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of a workpiece machining apparatus 1 according to an embodiment of the present invention. A workpiece machining apparatus 1 according to the present invention is a machine for machining a workpiece, and includes a press means 2 for performing press working, a workpiece supply means 3 for supplying the workpiece to the press means 2, and discharging the workpiece from the press means 2. And a work discharge means 4 to be operated.

  Here, as a workpiece processed by the workpiece processing apparatus 1 according to the present invention, various types can be adopted. For example, the workpiece | work formed from various materials, such as the member formed from a synthetic resin material, the member formed from a metal material, the member which combined the synthetic resin material and the metal material, can be illustrated. Moreover, it does not specifically limit regarding the shape of a workpiece | work, For example, the workpiece | work shape after press work may have various shapes, such as a rod-shaped or wire-shaped member, a square shape, a column shape, and a hollow cylinder shape.

  The press means 2 includes a press die by sandwiching a work preheated by a preheater such as a hot air heating device or an infrared heater between press dies (die) and pressing the work against the inner surface of the press dies with high pressure. It is a device that molds a workpiece into the same shape. As shown in the schematic front views of FIGS. 2A and 2B, the pressing means 2 includes a lower mold 21 on which a work is placed and a left and right side sandwiching the work placed on the lower mold 21. A right mold 22 and a left mold 23 disposed on both sides in the direction, and an upper mold 24 disposed above the lower mold 21 are provided. The right mold 22, the left mold 23, and the upper mold 24 are configured to apply a press pressure to the work placed on the lower mold 21 (the state shown in FIG. 2B) and the work. It is configured to be able to reciprocate between the press standby position (the state shown in FIG. 2A) that is spaced apart and does not apply the press pressure. Further, when the right mold 22, the left mold 23, and the upper mold 24 are arranged at the press standby position, the lower mold 21, the upper mold 24, the right mold 22, and the left mold 23 are used. The surrounded area R is configured to communicate with the external space in a predetermined direction. In FIG. 2, the region R is configured to communicate with the direction perpendicular to the paper surface, and the right mold 22, the left mold 23, and the upper mold 24 are arranged at the press standby position. The workpiece is supplied toward the region R surrounded by the lower die 21, the upper die 24, the right die 22 and the left die 23, and the workpiece can be set on the lower die 21. Has been. Further, after the pressing means 2 applies a pressing pressure to the workpiece, the upper die 24 is separated from the workpiece at a timing earlier than the right die 22 and the left die 23 are separated from the workpiece. It is configured. More specifically, after applying the press pressure to the workpiece, as shown in FIG. 3A, the upper mold 24 is first moved upward toward the press standby position to be separated from the workpiece. Then, as shown in FIG. 3B, the right mold 22 and the left mold 23 are each moved toward the press standby position. Here, various mechanisms can be used as a reciprocating mechanism for moving the right mold 22 and the left mold 23 in the left-right direction and a reciprocating mechanism for moving the upper mold 24 in the up-down direction. . For example, a mechanism that moves each die by converting the rotational motion of the electric motor into linear motion (elevating motion) via an eccentric mechanism (crank mechanism, eccentric mechanism, etc.), and each die by the action of a hydraulic piston. A moving mechanism or the like can be used.

  The work supply means 3 is an apparatus for supplying a work to the press means 2, and includes a supply pusher 31 as shown in the schematic configuration diagram of FIG. FIG. 4 shows the AA cross section of FIG. 2A together with the work supply means 3, the work discharge means 4, and the transfer device 5 for transferring the work. The supply pusher unit 31 includes a supply pusher body 32 formed in a rod shape, and a supply pusher drive unit 33 that reciprocates the supply pusher body 32 along the longitudinal direction of the supply pusher body 32. ing. The supply pusher main body 32 is connected to the supply pusher drive unit 33 via the support 34 so that the longitudinal direction thereof is parallel to the horizontal direction. In addition, the supply pusher portion 31 has the lower end die 21, the upper die 24, the right die 22, and the left die 23 when the tip end portion 32 a of the supply pusher main body 32 is moved forward. It is configured to be able to enter the region R surrounded by As shown in FIGS. 5A to 5C, the workpiece supply means 3 having such a configuration is configured so that the end of the pre-heated workpiece Z transferred by the transfer device 5 such as a conveyor is used as the supply pusher body 32. When the front end portion 32a is pressed, the workpiece Z is pushed out from above the conveyor 5 and supplied to the region R surrounded by the lower die 21, the upper die 24, the right die 22 and the left die 23 (FIG. 5). (State of (a)). The transfer device 5 moves in the direction perpendicular to the paper surface of FIG. The workpiece Z guided to the region R surrounded by the respective molds slides on the lower mold 21 by further pressing of the supply pusher body 32 (the state shown in FIG. 5B). (Fig. 5C)). Note that when the workpiece supply means 3 supplies the workpiece Z between the dies, the upper die 24, the right die 22 and the left die so that the workpiece Z can smoothly slide on the lower die 21. 23 is placed at the press standby position. Here, the press standby position is set so that the opposing surfaces 221 and 231 of the right mold 22 and the left mold 23 also serve as guide surfaces for the workpiece Z that slides on the lower mold 21. Specifically, the right mold 22 and the left mold 23 are arranged with a position where a slight gap is formed between the lower mold 21 and the workpiece to be supplied as a press standby position. .

  The work discharging means 4 is an apparatus that is disposed on the opposite side of the work supply means 3 with the lower mold 21 interposed therebetween, and pushes and discharges the work pressed by the pressing means 2 from between the dies. This work discharge means 4 has the same configuration as the above-described work supply means 3, and specifically, as shown in the schematic configuration diagram of FIG. 4, the lower mold 21, the upper mold 24, the right A discharge pusher portion 41 capable of entering a region surrounded by the mold 22 and the left mold 23 is provided. The discharge pusher portion 41 includes a discharge pusher main body 42 formed in a rod shape, and a discharge pusher drive portion 43 that reciprocates the discharge pusher main body 42 along the longitudinal direction of the discharge pusher main body 42. ing. The discharge pusher main body 42 is connected to the discharge pusher drive unit 43 via the support body 44 so that the longitudinal direction thereof is parallel to the horizontal direction. By the action of the discharge pusher drive unit 43, It is configured to be able to enter a region R surrounded by the lower mold 21, the upper mold 24, the right mold 22 and the left mold 23. Specifically, as shown in FIGS. 6A to 6C, in the standby state before the workpiece is pushed out from the lower mold 21 (the state shown in FIG. 6A), the entire discharge pusher main body 42 is discharged. Is arranged outside the area surrounded by the lower mold 21, the upper mold 24, the right mold 22, and the left mold 23, while in the operation state of pushing out the workpiece, The discharge pusher main body 42 enters the region R surrounded by the mold 21, the upper mold 24, the right mold 22, and the left mold 23 (the state shown in FIG. 6B), and when the extrusion is completed (discharge pusher). When the forward movement of the drive unit 43 is completed (the state shown in FIG. 6C), the distal end portion 42a of the discharge pusher main body 42 is a conveyor or the like disposed between the lower mold 21 and the workpiece discharge means 4. The transfer device 5 is configured to be positioned above the transfer surface. With this configuration, the work discharging means 4 is configured such that the tip end portion 42a of the discharge pusher main body 42 presses the end portion of the press-worked workpiece placed on the lower die 21 so that the lower die The workpiece Z is pushed out and discharged while sliding on the workpiece 21, and the workpiece Z can be guided onto the conveyor 5 disposed between the supply pusher portion 31 and the lower mold 21. When the workpiece discharge means 4 discharges the workpiece Z from between the dies, the upper die 24, the right die 22 and the left die are set so that the workpiece Z can smoothly slide on the lower die 21. 23 is placed at the press standby position. Also, the workpiece Z supplied by sliding on the lower mold 21 so that the opposing surfaces of the right mold 22 and the left mold 23 also serve as guide surfaces for the workpiece Z sliding on the lower mold 21. The right mold 22 and the left mold 23 are arranged with a position where a slight gap is formed between them as a press standby position.

  Here, when the above-described workpiece supply means 3 is configured to function as the workpiece discharge means 4, the workpiece discharge apparatus 4 may be omitted to constitute the workpiece processing apparatus 1. In order to configure the workpiece supply means 3 to also function as the workpiece discharge means 4, the reciprocating stroke length of the supply pusher drive unit 33 of the workpiece supply means 3 is changed, and the tip of the supply pusher body 32 is changed. However, when the forward movement of the supply pusher drive unit 33 is completed, the supply pusher drive unit 33 may be configured to come out on the outer side of the region surrounded by the lower mold 21, the upper mold 24, the right mold 22, and the left mold 23. In this way, when the workpiece supply means 3 is configured to function as the workpiece discharge means 4, for example, on the opposite side of the workpiece supply means 3 with the lower mold 21 sandwiched therebetween, a belt conveyor for transferring workpieces. A transfer device such as the above is arranged so that the workpiece Z discharged by the workpiece supply means 3 can be received.

  The workpiece processing apparatus 1 having such a configuration supplies the workpiece Z toward the region R surrounded by the lower die 21, the upper die 24, the right die 22 and the left die 23 by the action of the workpiece supply means 3. In addition, since the workpiece Z is slid on the lower die 21 and placed at a predetermined position of the lower die 21, the workpiece Z is arranged at a predetermined position for performing press working extremely smoothly. It is possible to perform press processing efficiently. Moreover, in the said embodiment, since the workpiece discharge means 4 which discharges the workpiece | work Z from on the lower metal mold | die 21 is provided, the workpiece | work Z press-processed by each metal mold | die can be discharged | emitted efficiently outside, It becomes possible to improve the workability of press working.

  Moreover, in the said embodiment, in the state which the right metal mold 22, the left metal mold 23, and the upper metal mold | die 24 have been arrange | positioned in the press standby position, each opposing surface 221,231 of the right metal mold 22 and the left metal mold 23 is Since the press standby positions of the right mold 22 and the left mold 23 are set so as to serve also as a guide surface for the work Z sliding on the lower mold 21, the work Z is slid on the lower mold 21. When the workpiece Z is fed between the molds, the side surfaces of the workpiece Z are controlled by the opposing surfaces 221 and 231 of the right mold 22 and the left mold 23 so that the workpiece Z is moved. It is possible to reliably set the predetermined position. Further, the discharge pusher 41 of the workpiece discharge means 4 (the supply pusher 31 of the workpiece supply means 3 when the workpiece supply means 3 also functions as the workpiece discharge means 4) is placed on the lower mold 21. Similarly, when the workpiece Z after pressing is pressed and the workpiece is discharged from the lower die 21 by sliding on the lower die 21, the side surfaces of the workpiece Z are the right die 22 and the left die 23. It will be guided to each opposing surface 221,231, and it will become possible to discharge the workpiece | work Z outside smoothly.

  Moreover, in the said embodiment, after the press means 2 applies a press pressure with respect to a workpiece | work, the upper metal mold | die 24 is a timing earlier than the right metal mold | die 22 and the left metal mold | die 23 separating from the workpiece | work Z. Since it is configured to be separated from the workpiece Z, the state in which the right mold 22 and the left mold 23 sandwich the workpiece Z (the pressed state of the workpiece by the right mold 22 and the left mold 23) is maintained. Since the upper die 24 can be separated from the workpiece Z, the workpiece Z moves upward as the upper die 24 moves upward (the workpiece is attached to the upper die 24). Can be effectively suppressed. If the workpiece Z moves while attached to the upper die 24, the workpiece Z may be damaged by dropping from the upper die 24, or it may jump out of the lower die 21. By configuring as described above, it is possible to reliably leave the workpiece Z after the press working on the lower mold 21, and to effectively prevent the workpiece Z from being damaged. Further, as a result of the work Z being reliably left on the lower die 21, the discharge pusher 41 of the work discharge means 4 (when the work supply means 3 also functions as the work discharge means 4, the work supply means 3, the supply pusher portion 31) can reliably press the workpiece Z after the press work placed on the lower die 21, and slides on the lower die 21 from the lower die 21. The workpiece Z can be reliably discharged, and the press working can be performed efficiently.

  The work processing apparatus 1 according to the present invention has been described above, but the specific configuration is not limited to the above embodiment. For example, in the above-described embodiment, the configuration in which the combination of the press unit 2, the workpiece supply unit 3, and the workpiece discharge unit 4 is single is described, but the press unit 2, the workpiece supply unit 3, and the workpiece discharge unit 4 The workpiece machining apparatus 1 may be configured to include a plurality of combinations, and may be configured to perform press machining on a plurality of workpieces Z at the same time.

  Moreover, in the said embodiment, both the right metal mold | die 22 and the left metal mold | die 23 respectively apply the press position which applies a press pressure with respect to the workpiece | work Z mounted in the lower metal mold | die 21, and a press pressure. Although it is configured to be able to reciprocate between a press standby position that is not applied, at least one of the right mold 22 and the left mold 23 is relative to the workpiece Z placed on the lower mold 21. You may comprise so that reciprocation is possible between the press position which applies a press pressure, and the press standby position which does not apply a press pressure.

  Moreover, in the said embodiment, as shown in FIG. 4, although the workpiece | work supply means 3 and the workpiece | work discharge means 4 are comprised so that it may each arrange | position on both sides on both sides of the lower metal mold | die 21, this structure It is not specifically limited to. For example, as shown in the schematic configuration plan view shown in FIG. 7A, the workpiece discharge means 4 may be disposed adjacent to the workpiece supply means 3 in a direction along the workpiece conveyance direction by the transfer device 5. . When such a configuration is adopted, a belt conveyor for receiving and transferring the work discharged from the lower mold 21 to the opposite side of the work supply means 3 and the work discharge means 4 sandwiching the lower mold 21. A transfer device 5A such as is arranged. Further, in order to supply the workpiece Z to the lower mold 21 by the workpiece supply means 3 and to discharge the workpiece Z from the lower mold 21 by the workpiece discharge means 4, for example, a schematic configuration of FIG. As shown by an arrow T in the plan view, the lower mold 21 is configured to reciprocate between a position where the workpiece is supplied by the workpiece supply means 3 and a position where the workpiece is discharged by the workpiece discharge means 4. To do. At this time, if only the lower mold 21 is reciprocated, the workpiece Z on the lower mold 21 and a mold (on the downstream side of the lower mold 21 in the workpiece conveyance direction by the transfer device 5) ( The left mold 23 (not shown) interferes with the right mold 22, the left mold 23, and the upper mold 24 relative to the lower mold 21 in order to prevent such interference. It is configured to be able to reciprocate synchronously while maintaining the relationship.

  Moreover, in the said embodiment, you may comprise so that the marking means 6 which forms an identification mark in the predetermined position of the workpiece | work after press work may be provided. The marking means 6 is an apparatus for forming an identification mark at a predetermined position of the work after press working. As shown in FIG. 8, the ink supply means 61, the work holding means 62 for holding the work Z, and the ink storage. The ink storage tank 63, the conveying means 64 that can move the ink supply means 61 in the vertical and horizontal directions, the movable mounting table 65 on which the workpiece Z supplied from the pressing means 2 side is placed, and press working. First workpiece moving means 66 for moving the workpiece Z to the movable mounting table 65, and second workpiece movement for taking the workpiece Z with the identification mark from the mounting table 651 and leading it to the subsequent process. Means 67.

  The ink supply means 61 is an apparatus for forming ink that can be printed on the workpiece Z on the droplet-shaped ink balls S as shown in FIG. 9C. As shown in FIG. 611, a hollow support 612 in which the ink holding body 611 is installed at the tip, and a pressure-increasing / decreasing means including a piston body 613. As shown in FIGS. 9A and 10, the ink holder 611 includes an internal passage 614 that communicates between both ends. Each end of the internal passage 614 is opened at both ends of the ink holder 611. The internal passage 614 exhibits a function of holding ink. In addition, the other end of the ink holder 611 is fixed to the hollow support 612 so that the internal passage 614 of the ink holder 611 and the hollow portion of the hollow support 612 communicate with each other.

  The pressure increasing / decreasing means is a means capable of increasing / decreasing the pressure inside the internal passage 614 of the ink holding member 611. In this embodiment, the piston body 613 is used as the pressure increasing / decreasing means. The outer peripheral surface of the piston body 613 is configured to be slidable in contact with the inner peripheral surface of the internal passage 614 in the ink holding body 611. Further, as shown in FIG. 10, in a state where the piston body 613 is pushed most into the hollow portion 615 of the hollow support body 612 and the internal passage 614 of the ink holding body 611 (state shown in FIG. 10B), the piston body The tip of 613 is arranged at the same position as one end 611a (tip) of the ink holding body 611, or the tip of the piston body 613 slightly protrudes from the one end 611a of the ink holding body 611 to the outside. Thus, it is preferable to set the lengths of the ink holding body 611, the hollow support body 612, and the piston body 613. When the lengths of the ink holding body 611, the hollow support body 612, and the piston body 613 are set in this way, the piston body 613 is pushed most into the ink holding body 611 and remains in the internal passage 614 of the ink holding body 611. It becomes possible to discharge the entire amount of ink. By adopting such a configuration, that is, by adopting a configuration in which the entire amount of ink remaining in the internal passage 614 of the ink holding body 611 can be discharged once, the ink in the internal passage 614 is dried and the internal passage 614 is dried. It is possible to reliably prevent clogging from occurring inside. Here, the ink holding body 611, the hollow support body 612, and the piston body 613 are preferably formed of a metal material such as stainless steel, but a material other than the metal material, for example, a synthetic resin material such as Teflon (registered trademark). You may form from.

  Further, as shown in FIG. 8, a piston driving device 618 that allows the piston body 613 to reciprocate is connected to the other end portion 617 of the piston body 613, and by the action of this piston driving device 618, The piston body 613 can be moved in the direction of pulling out the ink holding body 611, and the piston body 613 can be moved in the direction of pushing the tip of the piston body 613 toward the one end 611a of the ink holding body 611. In addition, by moving the piston body 613 in the direction of pulling out from the ink holding body 611 in a state where the one end 611a of the ink holding body 611 is immersed in the ink storage tank 63 in which ink is stored, the inside of the ink holding body 611 is obtained. The inside of the passage 614 can be set to a negative pressure, and the ink can be guided into the internal passage 614 via the one end 611 a of the ink holding member 611 and supplied to the internal passage 614. Further, by slightly pressing the piston body 613 against the ink holding body 611 supplied with ink, the inside of the internal passage 614 of the ink holding body 611 is pressurized, and droplets are applied to one end 611a of the ink holding body 611. Can be formed (state shown in FIG. 9C).

  Here, in the configuration of FIG. 8, the pressure increasing / decreasing means is configured by the piston body 613, but for example, the pressure increasing / decreasing means is configured by a pump device connected to the other end of the hollow support 612, and the ink You may make it pressurize and depressurize the inside channel | path 614 of the holding body 611. FIG. Even in such a configuration, the pump device sucks the air in the hollow portion 615 of the hollow support 612 and the internal passage 614 of the ink holder 611, so that the ink is discharged from the one end 611 a of the ink holder 611. One end of the ink holder 611 can suck the ink supplied into the internal passage 614 by supplying air into the hollow portion 615 of the hollow support 612 and the internal passage 614 of the ink holder 611. The ink balls S can be formed on the one end 611a by being discharged from the 611a.

  The workpiece holding means 62 is a device for holding a workpiece Z on which an identification mark is formed at a predetermined position. As shown in FIG. 8, a chuck 621, a chuck holder 622 on which the chuck 621 is disposed, A rotation shaft 623 to which the chuck holder 622 is fixed, and a support base (not shown) that rotatably supports the rotation shaft 623 are provided. A driving means (not shown) is connected to the rotating shaft 623, and the rotating shaft 623 is rotated by the action of the driving means. Along with this rotation, the chuck holding body 622 and the chuck 621 disposed on the chuck holding body 622. Rotates. The chuck 621 is configured to be able to advance and retract with respect to the chuck holder 622. Further, the chuck 621 is configured to hold the workpiece Z at the tip thereof and maintain the holding state, and to release the holding state (cancel the holding state) and detach the workpiece Z from the tip of the chuck 621. Yes.

  The ink storage tank 63 includes a container body 631 that stores ink therein and a lid 632 that closes the upper opening of the container body 631. A through hole 633 for inserting the ink holding body 611 in the ink supply means 61 into the container main body 631 and immersing the ink in the ink inside the container main body 631 is provided at a substantially central portion of the lid 632. A stopper member 634 is disposed around the end of the through hole 633 on the lid body surface side. The stopper member 634 is configured such that the tip edge 619 of the hollow support 612 in the ink supply means 61 can come into contact therewith.

  The transport means 64 is a device for moving the relative position between the workpiece Z and the ink supply means 61. In the configuration of FIG. 8, the transport means 64 supports the ink supply means 61 via the arm 641, and the ink supply means 61. The relative position between the workpiece Z and the ink supply means 61 can be changed by moving the. The above-described piston driving device 618 is installed on the arm 641. The conveying means 64 has one end 611a of the ink holder 611 so that the outer peripheral portion 611c at the tip 611b of the ink holder 611 including the one end 611a is along a predetermined position of the workpiece Z where the identification mark is to be formed. The ink supply means 61 is configured to move to the work Z side while maintaining a state in which the head is directed downward (state shown in FIG. 9B). Further, when the ink supply means 61 is moved, the outer peripheral portion 611c of the tip portion 611b of the ink holder 611 is brought into contact with the surface of the workpiece Z (a predetermined position of the workpiece Z to which the identification mark is to be applied). It is configured. Further, the transport unit 64 moves the ink supply unit 61 toward the ink storage tank 63, and moves the ink holding body 611 into the container main body 631 through the through hole 633 formed in the lid body 632 of the ink storage tank 63. The tip of the ink holding body 611 is immersed in the ink stored in the container main body 631 and can be moved. That is, the transport means 64 pulls out the ink supply means 61 in which the ink holder 611 is immersed in the ink storage tank 63 as shown in FIG. 11 and moves to the workpiece Z side (see FIG. 11). 11 (a), (b) and (c) in the order of movement), the ink supply means 61 is moved from the work Z side to the ink storage tank 63 side, and the ink holder 611 is inserted into the ink storage tank 63. Movement (movement in the order of FIGS. 11C, 11B, and 11A). When the transport unit 64 is not driven (when stopped), the ink holding body 611 is inserted into the ink storage tank 63, and the distal end peripheral edge 619 of the hollow support body 612 is provided on the lid body 632. It is preferable to be in contact with the stopper member 634 to be brought into contact (the state of FIG. 11A). Since the ink storage tank 63 is hermetically sealed when the tip edge 619 of the hollow support 612 contacts the stopper member 634, it is effective that the solvent contained in the ink volatilizes and the ink dries. Can be prevented. In particular, from the viewpoint of improving the airtightness of the ink storage tank 63, it is preferable to form the stopper member 634 from an elastic material. 8 and 11, the stopper member 634 is disposed above the through hole 633 formed in the lid 632. In addition to such an arrangement, for example, in the ink supply unit 61, You may comprise so that it may arrange | position to the front-end | tip part periphery 619 of the hollow support body 612. FIG.

  As shown in FIG. 8, the movable mounting table 65 includes a mounting table 651 and a reciprocating device (not shown). The mounting table 651 is a table on which the workpiece Z is mounted on the mounting surface, and is disposed below the workpiece holding means 62. The reciprocating device is a device for reciprocating the mounting table 651 between the first position and the second position.

  The first workpiece moving means 66 is a device for moving the pressed workpiece Z to the mounting table 651 of the movable mounting table 65. The first workpiece moving means 66 is not particularly limited as long as it can move the pressed workpiece Z onto the mounting table 651, and various types can be adopted. For example, a robot arm that sandwiches the workpiece Z and moves the workpiece Z from the pressing means 2 side to the mounting table 651, a slide device that slides the workpiece Z by pressing the workpiece Z, and the like can be employed.

  The second workpiece moving means 67 is a device that takes out the workpiece Z from the mounting table 651 in the movable mounting table 65 in order to guide the workpiece Z to which the identification mark is attached to the subsequent process. The second workpiece moving means 67 is not particularly limited as long as the workpiece Z can be taken out from the mounting table 651 in the movable mounting table 65, and various types can be adopted. For example, similarly to the first workpiece moving means 66, a robot arm that sandwiches the workpiece Z and removes it from the mounting table 651, a slide device that slides by pressing the workpiece Z and extracts it from the mounting table 651, and the like are employed. be able to.

  Here, the ink supply means 61, the conveying means 64, the work holding means 62, the movable mounting table 65, the first work moving means 66, and the second work moving means 67 constituting the marking means 6 operate in synchronization with each other. Is configured to do. In other words, the workpiece Z press-molded by the pressing unit 2 is a series of flows in the order of the first workpiece moving unit 66, the movable mounting table 65, the workpiece holding unit 62, the movable mounting table 65, and the second workpiece moving unit 67. The identification mark is formed at a predetermined timing while being sequentially guided. Specifically, as shown in FIGS. 12A to 12H, after the mounting table 651 is moved to the first workpiece moving means 66 side (right side of FIG. 12A; first position). Then, the work Za supplied from the press means 2 is moved onto the mounting surface of the mounting table 651 by the first work moving means 66 (state shown in FIG. 12A). Next, the reciprocating device of the movable mounting table 65 is driven to move the mounting table 651 to the second workpiece moving means 67 side (second position) (state shown in FIG. 12B). In this state, the chuck 621 of the workpiece holding means 62 clamps and lifts the workpiece Za (the state shown in FIG. 12C), and rotates the chuck holder 622 around the rotation shaft 623 so that the chuck 621 is in the upper position. (State shown in FIG. 12D). After completion of the rotation of the chuck holder 622, the conveying means 64 is driven to move the ink holder 611 so that the tip of the ink holder 611 is along the identification mark forming position of the workpiece Za, and the identification mark is placed at a predetermined position. (The identification mark forming process is not shown in FIG. 12). In the middle of the process of forming the identification mark, the reciprocating device of the movable mounting table 65 is driven again to move the mounting table 651 to the first workpiece moving means 66 side (first position) (FIG. 12D ) State). When the movement of the mounting table 651 is completed, the chuck holder 622 is rotated again so that the chuck 621 holding the workpiece on which the identification mark is formed is positioned at the lower position, and the workpiece Za on which the identification mark is formed. The chuck 621 holding state is released, the workpiece Z is returned to the mounting table 651, and the first workpiece moving means 66 moves another press-molded workpiece Zb onto the mounting surface (FIG. 12 ( e) state). Then, the reciprocating device of the movable mounting table 65 is driven to move the mounting table 651 again to the second workpiece moving means 67 side (second position) (state shown in FIG. 12F). At the timing when the movement of the mounting table 651 is completed, the second workpiece moving unit 67 takes out the workpiece Za with the identification mark from the mounting table 651, and the chuck 621 disposed at the lower position is pressed. Then, the other workpiece Zb is sandwiched and lifted (state shown in FIGS. 12F and 12G). Thereafter, the chuck holder 622 is rotated around the rotation shaft 623 so that the chuck 621 is in the upper position, and an identification mark is formed on the surface of the work, and the placing table 651 of the movable placing table 65 is moved to the first work moving means. It moves to the 66 side (1st position) (state of FIG.12 (h)). By continuously performing such a series of operations, the ink supply means 61, the transport means 64, and the work piece can be sequentially guided from the press means 2 side to the marking means 6 side and the subsequent process side. The operations of the holding means 62, the movable mounting table 65, the first work moving means 66, and the second work moving means 67 are controlled.

  As shown in FIGS. 9A to 9D, the marking means 6 included in the workpiece processing apparatus 1 according to the above embodiment is identified by the outer peripheral portion 611c of the tip portion 611b of the ink holder 611 to which ink is supplied. The ink holder 611 (or the workpiece Z) is moved along the predetermined position Z1 of the workpiece Z after press molding to be provided with a mark, and then an ink ball S is formed on one end 611a of the ink holder 611. Like to do. As a result, the ink in the formed ink ball S is transferred to the outer surface of the surface of the work Z and the tip 611b of the ink holder 611 as shown in FIG. In order to move upward while forming an identification mark on the workpiece Z, the identification mark conforms to the shape of the outer peripheral portion 611c of the tip portion 611b of the ink holding member 611 (according to the shape of the tip portion 611b). (Shape identification mark) can be printed on the surface of the workpiece Z. Specifically, for example, when the ink holder 611 has a linear shape (bar shape), a linear identification mark can be formed, or the ink holder 611 is curved. In the case of having such a shape, an identification mark having a shape along the curved shape can be formed.

  Further, according to the work processing apparatus 1 according to the present embodiment, the ink holding body 611 and the work Z are arranged so that the outer peripheral part 611c at the tip 611b of the ink holding body 611 is along the predetermined position Z1 of the press-worked work Z. It is possible to form the identification mark only by moving the relative position with respect to the ink, and it is necessary to move a member that discharges ink (a member corresponding to the ink holding body 611) so as to have the shape of the identification mark. In addition, the control relating to the movement of the ink holder 611 (or the workpiece Z) during marking can be configured to be simple, and the time required for marking can be shortened.

  Further, in the workpiece processing apparatus 1 according to the present embodiment, the conveying unit 64 of the marking unit 6 is configured such that the outer peripheral portion 611c of the tip end portion 611b of the ink holder 611 is the predetermined position Z1 (identification mark) of the pressed workpiece Z. The relative position between the ink supply means 61 and the workpiece Z is moved so as to come into contact with the position to be applied). By adopting such a configuration, the ink guided between the outer peripheral portion 611c and the work Z at the tip 611b of the ink holder 611 can be efficiently extended in the direction along the tip 611b of the ink holder 611. Therefore, it is possible to reliably and easily form an identification mark conforming to the shape of the distal end portion 611b.

  Here, the amount of ink supplied into the internal passage 614 of the ink holder 611 is 1.5 to 2.5 times the ink amount of the ink ball S formed on one end 611a of the ink holder 611. It is preferable to set so. In this way, an ink amount of 1.5 to 2.5 times the amount of ink of the ink ball S formed on the one end 611a of the ink holder 611 is supplied into the internal passage 614 of the ink holder 611. With this setting, when the ink ball S is formed by pressurizing the internal passage 614 of the ink holding body 611, the ink ball S having substantially the same shape and the same amount of ink is generated even if the air bubble is caught. It becomes possible to form stably.

  In addition, as the ink used in the marking method according to the present embodiment, various inks can be employed as long as printing on the workpiece Z is possible. The ink is generally formed by dissolving or mixing a pigment having a predetermined color in a solvent. Examples of the solvent include methylene chloride, chloroform, tetrahydrofuran (tetrahydrofuran), benzene, HFIP (hexafluoro- A volatile solvent such as 2-propanol can be preferably used. When an ink containing such a solvent is employed, the ink formed when the ink ball S is suspended from one end 611a of the ink holder 611 as shown in FIGS. 14 (a) and 14 (b). The ball S is quickly lifted and moves to the outer peripheral portion 611c side of the tip portion 611b of the ink holding member 611 (state shown in FIG. 14B). That is, when the ink holding body 611 and the workpiece Z are moved so that their relative positions are close to each other and the ink ball S is formed, an efficient and clean identification mark can be formed on the surface of the workpiece Z. It becomes.

  Moreover, when the workpiece | work Z is formed from a synthetic resin material, it is preferable that an ink contains the solvent which can melt | dissolve the said workpiece | work Z. As such a solvent, when the workpiece | work Z is formed from synthetic resin materials, such as polylactic acid, polyethylene, a polypropylene, for example, the volatile solvent mentioned above can be used conveniently. In such a case, when the identification mark is printed at the predetermined position Z1 of the workpiece Z, the surface of the workpiece Z, which is an ink adhering portion, melts and the surface roughness increases due to the action of the solvent contained in the ink. Since the pigment in the ink adhered to and impregnated on the surface of the workpiece Z having increased surface roughness is difficult to disappear even by friction or the like, a durable identification mark can be formed on the workpiece Z.

  Further, as shown in the cross-sectional view of FIG. 15, an identification mark having a shape along the concave portion (groove portion) Z <b> 2 in the workpiece Z is formed on the workpiece Z after the press working whose surface is uneven. In this case, the gap between the outer surface of the concave portion Z2 of the work Z and the outer peripheral portion 611c of the ink holding body 611 is narrowed by reducing the distance between the outer peripheral portion 611c of the tip end portion 611b of the ink holding body 611 and the work Z. Since the space portion Z3 is formed, the ink ball S formed on the one end 611a of the ink holding body 611 is quickly sucked into the space portion Z3, and the recess Z2 in the workpiece Z is very quickly and cleanly. It becomes possible to form an identification mark. FIG. 15 is a cross-sectional view showing a cross section corresponding to the BB cross section of FIG.

  Further, as shown in FIG. 9, the marking means 6 moves the relative position between the work and the ink holding body 611 so that the outer peripheral portion 611c at the tip 611b of the ink holding body 611 is along the predetermined position Z1 of the work. After that, the ink ball S is formed so as to hang down on one end 611a of the ink holding body 611. For example, as shown in FIG. 16, the ink ball S hangs down on one end 611a of the ink holding body 611. S may be formed, and then the relative position between the work and the ink holding body 611 may be moved so that the outer peripheral portion 611c at the tip 611b of the ink holding body 611 is along the predetermined position Z1 of the work. . Even in such a configuration, as shown in FIGS. 16D and 16E, as the distance between the work and the tip portion 611b of the ink holding body 611 decreases, the ink holding body 611 is formed at one end 611a. Ink ball S flows along the outer peripheral portion 611c of the front end portion 611b of the ink holding body 611 while being guided between the outer peripheral portion 611c and the workpiece at the front end portion 611b of the ink holding body 611. An identification mark (identification mark having a shape corresponding to the shape of the tip portion 611b) along the shape of the outer peripheral portion 611c of the tip portion 611b of the ink holder 611 can be printed on the work surface.

  Further, in the configuration in FIG. 8, the marking means 6 is configured to move the relative position between the ink holder 611 and the workpiece while maintaining the state where the one end 611a of the ink holder 611 is directed downward. At the same time, the ink ball S is formed while maintaining one end 611a facing downward. However, the present invention is not particularly limited to this configuration, and the direction in which the one end 611a of the ink holding member 611 faces. It is possible to select variously. For example, the relative position between the ink holder 611 and the workpiece may be moved with the one end 611a facing upward, and the ink ball S may be formed while maintaining this state, or the one end 611a. The ink ball S may be formed while moving the relative position between the ink holding member 611 and the workpiece so that the ink holding member 611 faces the horizontal direction.

  Further, as shown in FIG. 9, the outer peripheral portion 611c of the tip 611b of the ink holding member 611 of the marking means 6 is brought into contact with the surface of the workpiece Z (predetermined position Z1 of the workpiece Z to be provided with the identification mark). In addition, the relative position between the workpiece Z and the ink holding member 611 is moved, but the present invention is not limited to such a configuration. For example, the relative position between the work Z and the ink holding body 611 is moved to such an extent that a slight gap is formed between the outer peripheral portion 611c and the work Z at the front end 611b of the ink holding body 611. Also good. Even in such a configuration, the ink ball S formed on the one end 611a of the ink holder 611 is in the gap formed between the outer peripheral portion 611c and the workpiece Z at the tip 611b of the ink holder 611. In this way, a linear identification mark can be formed on the work surface.

  In the configuration shown in FIG. 8, the ink supply means is configured to suck ink from one end 611 a of the ink holding body 611 and to form an ink ball S at the one end 611 a by the pressing action of the piston body 613. However, in addition to such a configuration, for example, the ink supply means is provided by a dispenser (liquid fixed amount discharge device) capable of continuously supplying ink from the other end side of the ink holding body 611 toward the one end 611a side. It may be configured.

  Further, in place of providing the marking means 6 described above, at least one of the lower mold 21, the right mold 22, the left mold 23, and the upper mold 24 in the press means 2 is stamped for identification mark stamping. A portion may be formed so that when a press pressure is applied to the workpiece, an identification mark can be imprinted at a predetermined position of the workpiece simultaneously with the press working.

  Moreover, you may comprise the workpiece processing apparatus 1 so that the bending process means which performs a predetermined bending process with respect to the workpiece | work Z to which the identification mark was provided may be further provided. As a bending means, a press bending machine that bends the workpiece Z into the same shape as the press die by sandwiching the workpiece Z between the press die for bending and pressing the workpiece Z against the inner surface of the press die with high pressure Can be illustrated. When bending the workpiece Z, the workpiece Z may be preheated in advance by a preheater such as a hot air heating device or an infrared heater from the viewpoint of easily bending the workpiece Z without damaging the workpiece Z. preferable. In this way, by configuring the workpiece Z with the identification mark to be bent, the identification mark is formed as compared with the case where the identification mark is formed on a bent workpiece. The position can be made uniform. Specifically, when the identification mark is formed at a predetermined position with respect to the workpiece Z that has been bent, it is difficult to always support the curved and bent workpiece Z in a fixed posture. An error is likely to occur in the formation position. On the other hand, when the work processing apparatus 1 is configured to include a bending means for bending the work Z on which the identification mark is formed, the identification mark is applied to the work Z before bending and bending that is easy to support. Since it is formed in advance, it is possible to stabilize the formation position of the identification mark in the workpiece Z after bending.

  Further, in order to perform bending on a plurality of workpieces at the same time, it is preferable to configure a press die for bending so that a plurality of workpieces can be installed side by side. FIG. 17 shows an example of a bending lower mold 71 constituting such a press mold. The lower die 71 for bending is formed so that a plurality of molds 711 (concave portions) formed in a predetermined curved shape are arranged in parallel. Each work to be bent is placed in each die 711 (each recess). Further, the bending lower mold is disposed above the bending lower mold 71 and applies a press pressure to the workpiece placed on the bending lower mold 71. A mold (projection or recess) corresponding to each mold 711 in 71 is formed.

  Moreover, the bending lower mold 71 shown in FIG. 17 is configured to be able to perform bending on different types of workpieces (works having different shapes). When the processing mold is configured to perform bending on different types of workpieces in this way, each die 711 (each concave portion) is configured so that workpieces having the same shape are not arranged adjacent to each other. To do. In the configuration of FIG. 17, such a configuration is adopted in which a mold 711 (concave portion) is formed so that five types of workpieces A, B, C, D, and E are repeatedly arranged in this order. In this case, the press pressure by the upper mold for bending is applied uniformly to the workpiece, and the bending of the workpiece can be performed reliably and efficiently. In addition, when different types of workpieces (for example, workpieces A to E) are not set at the same time and only a plurality of arbitrary types of workpieces (for example, workpiece A) are set and bent, each workpiece A has an equal distance. Therefore, the press pressure by the upper mold for bending is uniformly applied to all the workpieces A. As a result, uniform bending can be performed on all workpieces A.

DESCRIPTION OF SYMBOLS 1 Work processing apparatus 2 Press means 21 Lower mold 22 Right mold 23 Left mold 24 Upper mold 3 Work supply means 31 Supply pusher part 32 Supply pusher body 33 Supply pusher drive part 4 Work discharge means 41 For discharge Pusher part 42 Ejection pusher body 43 Ejection pusher drive part 6 Marking means 61 Ink supply means 62 Work holding means 63 Ink storage tank 64 Transport means 65 Movable mounting table 66 First work moving means 67 Second work moving means S Ink Ball Z, Za, Zb Workpiece

Claims (7)

A workpiece processing apparatus for processing a workpiece formed of a synthetic resin material, or a metal material, or a material obtained by combining a synthetic resin material and a metal material ,
A press means for performing press working, and a work supply means for supplying a work to the press means,
The pressing means includes a lower mold on which a work is placed, a right mold and a left mold that are respectively disposed on both sides in the left-right direction across the work placed on the lower mold, and the lower mold And an upper mold disposed above,
At least one of the right mold and the left mold, and the upper mold apply a press position and a press pressure to the workpiece placed on the lower mold. It is configured to be able to reciprocate with the press standby position,
The workpiece supply means includes the lower die, the upper die, the right die in a state where at least one of the right die and the left die, and the upper die is disposed at a press standby position. A workpiece processing apparatus, comprising: supplying a workpiece toward a region surrounded by a mold and the left mold; and sliding the workpiece on the lower mold to place the workpiece on the lower mold. A workpiece processing apparatus for processing a pre-heated workpiece formed from a synthetic resin material, or a metal material, or a combination of a synthetic resin material and a metal material,
A press means for performing press working, and a work supply means for supplying a work to the press means,
The pressing means includes a lower mold on which a work is placed, a right mold and a left mold that are respectively disposed on both sides in the left-right direction across the work placed on the lower mold, and the lower mold And an upper mold disposed above,
At least one of the right mold and the left mold, and the upper mold apply a press position and a press pressure to the workpiece placed on the lower mold. It is configured to be able to reciprocate with the press standby position,
The workpiece supply means includes the lower die, the upper die, the right die in a state where at least one of the right die and the left die, and the upper die is disposed at a press standby position. A workpiece is supplied toward a region surrounded by a mold and the left mold, and the workpiece is placed on the lower mold by sliding on the lower mold.
In a state where at least one of the right mold and the left mold and the upper mold are arranged at the press standby position, the opposing surfaces of the right mold and the left mold are the lower mold A work machining apparatus , wherein a press standby position of at least one of the right mold and the left mold is set so as to serve also as a guide surface for a work sliding on the mold .   After the pressing means applies a pressing pressure to the workpiece, the upper die is separated from the workpiece at a timing earlier than at least one of the right die and the left die is separated from the workpiece. The workpiece processing apparatus according to claim 1 or 2, configured as described above. It further comprises work discharge means for discharging the work after press working by the press means,
The workpiece discharge means includes a discharge pusher portion that can enter an area surrounded by the lower mold, the upper mold, the right mold, and the left mold,
In the state where at least one of the right mold and the left mold, and the upper mold are arranged at the press standby position, the discharge pusher portion is pressed by the lower mold. The workpiece processing apparatus according to claim 1, wherein a workpiece is pressed from a lower die and is slid on the lower die to discharge the workpiece from the lower die.   The workpiece processing apparatus according to claim 1, further comprising a marking unit that forms an identification mark at a predetermined position of the workpiece after being pressed by the pressing unit.   At least one of the lower die, the right die, the left die, and the upper die in the pressing means is formed with a marking portion for marking an identification mark at a predetermined position of the workpiece when a pressing pressure is applied to the workpiece. The workpiece processing apparatus according to any one of claims 1 to 4. The workpiece processing apparatus according to claim 5, further comprising a bending unit that performs a predetermined bending process on the workpiece on which the identification mark is formed.

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