JP6517452B1 - Punching device - Google Patents

Abstract

In the punching apparatus 10 of the present invention, the transport mechanism 12 for moving the workpiece 11 in the delivery direction (the front and rear direction in the drawing) mainly, the first fixing mechanism 13 for fixing the workpiece 11 and the second fixing mechanism 14, a first pressing mechanism 15 and a second pressing mechanism 16 for pressing the workpiece 11, a die set 17 for supporting the transport mechanism 12, and the transport mechanism 12. The workpiece 11 is punched on the workpiece 11. It has a punching mechanism 18 for forming a hole and a control unit 19 for controlling the operation of the punching device 10. With this structure, the workpiece 11 is firmly fixed by the first fixing mechanism 13 and is transported by the transport mechanism 12 in a stretched state, whereby a plurality of punches to be drilled in the workpiece 11 The holes 43 and 44 are formed with high positional accuracy and are formed in pin shapes with high accuracy.

Description

  The present invention relates to a punching apparatus for forming a plurality of punched holes in a workpiece such as leather of a vehicle seat, and in particular, while moving a long workpiece in a delivery direction, the workpiece has high positional accuracy. The present invention relates to a punching device for punching a precise punched hole.

  Patent Document 1 discloses a punching apparatus 100 previously developed by the present applicant. FIG. 8A is a cross-sectional view for explaining the schematic structure of the conventional punching apparatus 100. As shown in FIG. FIG. 8B is a perspective view for explaining the schematic structure of the conventional punching apparatus 100. As shown in FIG.

  As shown in FIG. 8A, the punching apparatus 100 mainly includes a plurality of punches 101, an upper die set portion 102 and a backing plate portion 103, and a lower die plate portion 104 and a backing plate. It has a portion 105 and an elevation portion 106 for raising and lowering the punch portion 101. Then, the workpiece 107 is supplied to the space formed between the die plate unit 104 and the elevation unit 106, and a plurality of punched holes are punched in the workpiece 107 by the punch unit 101. In the die plate portion 104 and the backing plate portion 105, a plurality of openings 108 into which the lowered punch portion 101 is inserted are formed.

  As shown in FIG. 8B, the punching apparatus 100 has a plate-like conveyance table 109 which supports the workpiece 107 on the upper portion of the die plate portion 104 and moves together with the workpiece 107. Servo motors 110 and 111 serving as motive power sources are disposed on the transport table 109. The servo motor 110 moves the transport table 109 in the lateral width direction, for example, and the servo motor 111 moves the transport table 109, for example. Move in the vertical width direction. Then, by the combination of the drive patterns of the servomotors 110 and 111, the carrier table 109 can freely move in any of the longitudinal direction, the lateral direction, and the oblique direction.

Patent No. 5837711

  In the above-described punching apparatus 100, the workpiece 107 is supported by the carrier table 109, and is firmly fixed to the upper surface of the carrier table 109 via the clip 112. Then, in the punching apparatus 100, in a state in which the workpiece 107 is fixed to the transport table 109, punching processing is performed on the workpiece 107 while moving the transport table 109.

  That is, the sheet-like workpiece 107 is firmly fixed to the upper surface of the carriage 109 via the clip 112, and the workpiece 107 is maintained in a fixed state during the punching operation. By the above-mentioned processing method, the workpiece 107 is prevented from loosening during the punching operation, and the punched hole is drilled in the workpiece 107 with high positional accuracy, and the punched hole precisely conforming to the shape of the punch portion 101 is drilled. can do.

  However, in the case where the workpiece 107 is, for example, a long roll wound, it is necessary to perform punching processing on the workpiece 107 while feeding out the workpiece 107, and the workpiece 107 becomes loose. There is a problem that it becomes difficult to punch holes with high positional accuracy in the workpiece 107 and it is difficult to form punch holes that precisely conform to the shape of the punch section 101 due to slippage, twisting, or turning. .

  Further, in the case where the workpiece 107 is, for example, leather of a vehicle seat, in addition to the above problems, the workpiece 107 is further firmly fixed and punching is performed in a stretched state of the workpiece 107. If processing is not performed, the shape of the punched hole is lost, and the fiber layer of the workpiece 107 may block the punched hole.

  As described above, when drilling a plurality of punched holes in the workpiece 107, it is necessary to firmly fix the workpiece 107 and to fix the workpiece 107 in a stretched state at least in the processing region. It is important to realize the fixing mechanism. In particular, in the case where the workpiece 107 is long, in order to perform punching processing while moving the workpiece 107 in the delivery direction, the workpiece 107 is slackened, twisted or deviated when it is moved. It becomes easy to do. For this reason, it is a challenge to transport the workpiece 107 while fixing it in an extended state at least in the processing region, and how to perform punching processing in the fixed state.

  The present invention has been made in view of the above circumstances, and while moving a long workpiece in the delivery direction, the workpiece is firmly fixed at least in the processing area, and the workpiece is precisely positioned. The present invention provides a punching device for punching precise punched holes.

In the punching device according to the present invention, the first transport unit which reciprocates in the feeding direction in the punching device for moving the strip-like workpiece in the feeding direction and perforating a plurality of punch holes in the workpiece by the punching mechanism. A die set for supporting the first transport unit, and the first transport unit being disposed with respect to the first transport unit, the first transport unit moving forward with the workpiece in the delivery direction A first fixing mechanism for fixing the workpiece to the first transport unit, a first receiving pedestal provided for the die set, and the first receiving pedestal And the fixed portion, and when the first transfer portion returns to the rear in the delivery direction separately from the workpiece, the workpiece is fixed to the first receiving pedestal and the fixed portion. a second fixing mechanism for fixing Te, to the first conveying portion The feed while being disposed in front of the direction from the machining area kicked, the direction intersecting the feeding direction, a first pressing mechanism for pressing the workpiece with respect to said first receiving seat, the The first fixing mechanism includes a first fixing portion for fixing the workpiece so as to sandwich the processing area on the rear side in the delivery direction with respect to the first pressing mechanism, and the first fixing mechanism. And a second fixing portion for fixing the workpiece on the front side in the delivery direction with respect to the pressing mechanism, and the punch mechanism fixes the workpiece with the first fixing mechanism. The punched hole is drilled in the above state.

Further, in the punching device according to the present invention, a second pressing mechanism which is disposed rearward of the processing area in the delivery direction and which presses the workpiece in a direction intersecting the delivery direction. The second pressing mechanism is disposed with respect to a second receiving pedestal disposed in the die set, and presses the workpiece against the second receiving pedestal. .

Further, in the punching device according to the present invention, in the punching device for moving the strip-like workpiece in the delivery direction and perforating a plurality of punched holes in the workpiece by the punching mechanism, the first reciprocating in the delivery direction. A transport unit, a second transport unit supporting the first transport unit and reciprocating in a direction intersecting the delivery direction, and the first transport unit being disposed relative to the first transport unit; A first fixing mechanism that fixes the workpiece to the first transport unit when the transport unit moves forward with the workpiece in the delivery direction, and the second transport unit. A second fixing unit for fixing the workpiece to the second transport unit when the first transport unit returns to the rear in the delivery direction separately from the workpiece; Mechanism, and processing provided in the first transport unit While it is disposed in front of the feeding direction than pass, in a direction intersecting the feeding direction, and a first pressing mechanism for pressing said workpiece against said second conveying section, wherein A first fixing mechanism is a first fixing portion that fixes the workpiece so as to sandwich the processing area on the rear side in the delivery direction with respect to the first pressing mechanism, and the first pressing mechanism And a second fixing portion for fixing the workpiece on the forward side in the delivery direction, and the punch mechanism is configured to fix the workpiece with the first fixing mechanism. To punch the punched holes.

Further, in the punching device of the present invention, further, a die set for supporting the second transport portion, while being disposed in the second conveying portion of the rear of the feeding direction than the processing region, wherein the delivery And a second pressing mechanism configured to press the workpiece in a direction intersecting the direction, and when the first conveyance unit returns to the rear in the delivery direction, the second conveyance unit is configured to The second fixing mechanism is characterized in that the workpiece is fixed on the second transport unit without returning to the rear in the delivery direction.

  Further, in the punching device according to the present invention, the punching mechanism forms a punching portion for holding a plurality of pins for punching the punching hole in the workpiece and a plurality of small holes receiving lower ends of the plurality of pins. And the pin receiving plate portion is disposed on the upper surface of the die set exposed to the processing area, and the upper surface of the pin receiving plate portion is the first transport It is characterized in that the height is substantially the same as the upper surface of the part.

  Further, in the punching device according to the present invention, the pin receiving plate portion is arranged in two rows back and forth in the delivery direction, and the small holes of the pin receiving plate portion at the front stage are smaller than the pin receiving plate portion at the rear stage. It is characterized in that at least the shape or opening area of the hole is different.

  Further, in the punching device according to the present invention, the punching mechanism is further provided on a movable piece portion which is disposed on the upper surface of the punch portion and adjusts movement of the pin in the vertical direction with respect to the punch portion; A movable control unit having a piece control unit for controlling the movement, the movable piece section being a punch surface that does not allow the movement of the pin above the punch section, and being recessed upward with respect to the punch surface; And a non-punch surface allowing movement of the pin above the punch part, wherein the piece control part is configured to move the movable piece above the pin when drilling the punch hole in the workpiece. When the punched surface of the part is disposed and the punched hole is not bored in the workpiece, the non-punched surface of the movable piece is disposed above the punched part.

  In the punching apparatus according to the present invention, the transport mechanism that reciprocates in the delivery direction and moves the workpiece in the delivery direction, and the transport mechanism fixes the workpiece when it moves forward with the workpiece in the delivery direction. And a second fixing mechanism that fixes the workpiece when the transport mechanism returns to the rear in the delivery direction separately from the workpiece. With this structure, the work piece is firmly fixed by the first fixing mechanism and conveyed in an extended state, whereby punch holes to be drilled in the work piece are formed with high positional accuracy. The pin shape is precisely formed.

  Further, in the punching device according to the present invention, the first pressing mechanism disposed forward of the processing area of the transport mechanism in the delivery direction is provided, and the first fixing portion of the first fixing mechanism is the first pressing mechanism. The workpiece fixed to the front in the delivery direction with respect to the pressing mechanism is fixed, and the second fixing portion of the first fixing mechanism fixes the workpiece to the rear in the delivery direction than the first pressing mechanism. With this structure, the workpiece is pushed from the upper surface by the first pressing mechanism, and conveyed in a state in which the front and back of the first pressing mechanism are firmly fixed by the first and second fixing portions. Ru. And, at least in the periphery of the processing area, the workpiece is prevented from being loosened, rolled up, or twisted.

  The punching apparatus according to the present invention further includes a second pressing mechanism disposed rearward of the processing area in the delivery direction, and the transport mechanism includes a first transport unit that reciprocates in the delivery direction, and the delivery. A second transport unit that reciprocates in a direction intersecting the direction, and the second fixing mechanism, the first pressing mechanism, and the second pressing mechanism are disposed relative to the second transport unit ing. With this structure, the workpiece is firmly fixed by the second fixing mechanism, the first pressing mechanism, and the second pressing mechanism even when the first transport unit returns to the rear in the delivery direction. . Then, the first transport unit repeats reciprocating motion in the delivery direction, but the workpiece is prevented from being displaced to the rear side in the delivery direction, and punch holes are formed with good position accuracy in the workpiece .

  The punching apparatus according to the present invention further includes a die set for supporting the transport mechanism, the second transport unit is disposed on the die set, and the first transport unit is disposed on the second transport unit. It is arranged. The first fixing mechanism is disposed relative to the first transport unit, and the second transport unit moves backward in the delivery direction when the first transport unit returns backward in the delivery direction. The second fixing mechanism is stopped with respect to the second transport unit in a state in which the workpiece is fixed without returning. With this structure, when the first transport unit returns backward in the delivery direction, the workpiece is prevented from being displaced backward by the first transport unit.

  Further, in the punching device of the present invention, the punching mechanism has a punching portion for holding a plurality of pins, and a pin receiving plate portion in which a plurality of small holes receiving the lower ends of the plurality of pins are formed. The receiving plate portion is disposed on the upper surface of the die set exposed in the processing area, and the upper surface of the pin receiving plate portion has substantially the same height as the upper surface of the first transport portion. With this structure, the punching mechanism repeatedly moves up and down in the vertical direction of the punching device, while the workpiece 11 smoothly moves on the upper surface such as the first transport unit, thereby making the desired design for the workpiece. Punches can be drilled along.

  Further, in the punching device according to the present invention, the pin receiving plate portions are arranged in two rows back and forth in the delivery direction, and the small holes of the pin receiving plate portion of the front stage are to the small holes of the pin receiving plate portion of the rear stage. It is characterized in that its shape or opening area is different. With this structure, punched holes of various shapes and positional relationships can be formed in the workpiece, and a desired design can be drawn by the punched holes in the workpiece.

  Further, in the punching device according to the present invention, the punch mechanism is disposed on the upper surface of the punch unit, and a movable control unit that adjusts movement of the pin in the vertical direction with respect to the punch control unit; And. The movable piece has a punch surface which does not allow the pin to move upward, and a non-punch surface which allows the pin to move upward by being recessed upward from the punch surface. ,have. According to this structure, the piece control unit arranges the punch surface above the pins of the punch portion when the punched hole is formed in the workpiece, and the punch portion does not punch the punched hole in the workpiece. Position the non-punched surface above the pin of As a result, all pins are lowered at the time of punching, but by controlling the movable piece in accordance with the design data, it is possible to draw a desired design on the workpiece.

It is a perspective view explaining (A) punching device of one embodiment of the present invention, and (B) it is a block diagram showing an outline of a punching device. It is a disassembled perspective view explaining the punching apparatus of one Embodiment of this invention. It is a top view explaining the punching apparatus of one embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS (A) Top view explaining the punching apparatus of one Embodiment of this invention, (B) Top view, (C) It is a top view. BRIEF DESCRIPTION OF THE DRAWINGS (A) Side view explaining the punching apparatus of one Embodiment of this invention, (B) Top view, (C) Side view, (D) It is a top view. BRIEF DESCRIPTION OF THE DRAWINGS (A) Side view explaining the punching apparatus of one Embodiment of this invention, (B) Top view, (C) Side view, (D) It is a top view. BRIEF DESCRIPTION OF THE DRAWINGS (A) Top view explaining the punching apparatus of one Embodiment of this invention, (B) Perspective view, (C) Side view, (D) It is a side view. (A) Sectional drawing and (B) perspective view explaining the conventional punching apparatus.

  Hereinafter, a punching device 10 according to an embodiment of the present invention will be described in detail based on the drawings. In the description of the present embodiment, the same reference numerals will be used in principle for the same members, and the repeated description will be omitted.

  In the following description, the vertical direction indicates the height direction of the punching device 10, the horizontal direction indicates the lateral width direction of the punching device 10, and the front-rear direction indicates the depth direction of the punching device 10. The front-rear direction is a direction in which the workpiece 11 is sent out, and the left-right direction is a direction orthogonal to the delivery direction. The front in the delivery direction of the workpiece 11 indicates the back side of the punching device 10, and the rear in the delivery direction of the workpiece 11 indicates the front side of the punching device 10. That is, the workpiece 11 is fed from the front side of the punching device 10 toward the back side.

  First, FIG. 1A is a perspective view for explaining the punching device 10 of the present embodiment. FIG. 1 (B) is a block diagram for explaining the punching device 10 of the present embodiment.

  FIG. 1A shows a schematic structure of the punching device 10. As illustrated, the punching apparatus 10 mainly includes a transport mechanism 12 for moving the workpiece 11 (see FIG. 3) in the delivery direction (front and rear direction in the drawing) and a first fixing mechanism 13 for securing the workpiece 11. And the second fixing mechanism 14, the first pressing mechanism 15 and the second pressing mechanism 16 for pressing the workpiece 11, the die set 17 for supporting the transport mechanism 12, and the transport mechanism 12 disposed above, A punch mechanism 18 for forming punched holes 43 and 44 (see FIG. 4B) in the workpiece 11 and a control unit 19 for controlling the operation of the punching device 10 are provided.

  The workpiece 11 is a belt-like or sheet-like material made of various materials such as metal, resin, wood, leather, paper or cloth, and is, for example, leather, synthetic resin or cloth used for a seat of a vehicle. . Then, the workpiece 11 is disposed, for example, on the front side of the punching device 10 in a state of being wound in a roll, and the workpiece 11 is delivered from the front side of the punching device 10 toward the back side. Be Thereafter, while the workpiece 11 is intermittently moved in the feeding direction in the punching device 10, the punched holes 43 and 44 are bored in the workpiece 11, and the workpiece 11 is the rear of the punching device 10 It is rolled up at In addition, the delivery apparatus and winding apparatus of the to-be-processed object 11 arrange | positioned before and behind the punching apparatus 10 use a well-known apparatus, and abbreviate | omit the description here.

  The transport mechanism 12 moves the first transport unit 12A for moving the workpiece 11 in the delivery direction (the front and rear direction in the drawing) and the second transport unit 12 for moving the workpiece 11 in the direction perpendicular to the delivery direction (the left and right direction in the drawing). And a transport unit 12B. The second transport unit 12B is disposed on the upper surface of the die set 17 via, for example, known linear guides 17C and 17D (see FIG. 2), and is movable in the orthogonal direction. On the other hand, the first transport unit 12A is disposed on the upper surface of the second transport unit 12B via, for example, known linear guides 12B2 and 12B3 (see FIG. 2), and is movable in the delivery direction. The second transport unit 12B may move in a direction intersecting with the delivery direction, for example, in an oblique direction.

  The first fixing mechanism 13 is disposed relative to the first transport unit 12A, and is movable in the height direction (vertical direction in the drawing) via a known drive mechanism (not shown), for example, an air pressure mechanism. And, according to the control signal from the control unit 19, the workpiece 11 is fixed to the upper surface of the first transport unit 12A, or the workpiece 11 is not fixed to the upper surface of the first transport unit 12A. Do. The first fixing mechanism 13 includes a pair of first fixing portions 13A and 13B located on the back side (the front side in the delivery direction) of the processing area 20 in which the punch holes 43 and 44 are bored. And a pair of second fixing portions 13C, 13D located on both sides.

  The second fixing mechanism 14 is disposed relative to the second transport unit 12B, and for example, a receiving pedestal 14A disposed on the upper surface of the second transport unit 12B in the lateral width direction of the punching device 10; It has a pair of fixing | fixed part 14B, 14C which fixes the to-be-processed object 11 to 14 A of pedestals. The fixing portions 14B and 14C are disposed relative to the receiving pedestal 14A, and are movable in the height direction (vertical direction in the drawing) via a known drive mechanism (not shown), for example, a pneumatic mechanism. In response to the control signal from the control unit 19, the workpiece 11 is fixed to the upper surface of the receiving pedestal 14A, or the workpiece 11 is not fixed to the upper surface of the receiving pedestal 14A.

  Although the receiving pedestal 14A is disposed on the upper surface of the second conveying portion 12B so that the upper surface thereof has substantially the same height as the upper surface of the first conveying portion 12A, the present invention is not limited to this case. . For example, the receiving pedestal 14A may be integrally formed with the second transport unit 12B and may be formed as a part of the second transport unit 12B. In this case, the workpiece 11 is fixed to the upper surface of the second transport unit 12B by the second fixing mechanism 14 and pressed onto the upper surface of the second transport unit 12B by the first pressing mechanism 15. .

  The first pressing mechanism 15 is disposed on the upper surface of the receiving pedestal 14A on the back side (the front side in the delivery direction) of the processing area 20. The first pressing mechanism 15 has a cylindrical roller portion 15A that is disposed in a direction perpendicular to the delivery direction, that is, in the lateral width direction of the punching device 10. The roller portion 15A is disposed in contact with the upper surface of the receiving pedestal 14A, and presses the workpiece 11 between the receiving portion 14A and the receiving pedestal 14A. Although the details will be described later, in a state where the workpiece 11 is held between the roller portion 15A and the receiving pedestal 14A, it is pulled to the front side in the delivery direction by the first fixing portions 13A and 13B. Thus, the workpiece 11 is less likely to sag, twist, or slip during movement.

  The second pressing mechanism 16 is disposed on the upper surface of the second transport unit 12B on the front side (the rear side in the delivery direction) of the processing area 20. The second pressing mechanism 16 has a receiving pedestal 16A disposed in a direction perpendicular to the delivery direction, that is, the lateral width direction of the punching device 10, and a cylindrical roller portion 16B. The receiving pedestal 16A is disposed in the second transport unit 12B such that the top surface thereof has substantially the same height as the top surface of the first transport unit 12A.

  Further, the roller portion 16B is disposed in contact with the upper surface of the receiving pedestal 16A, and presses the workpiece 11 between the receiving portion 16A and the receiving pedestal 16A. Although the details will be described later, the workpiece 11 is pulled to the upper surface of the first conveyance portion 12A by the second fixing portions 13C and 13D in a state of being held between the roller portion 16B and the receiving pedestal 16A. By being inserted, it becomes difficult for the workpiece 11 to be slackened, twisted or moved while moving. By disposing the second pressing mechanism 16 in front of the first transport unit 12A, the workpiece 11 fed out by the delivery device (not shown) of the workpiece 11 can be freely This prevents the workpiece 11 from being slackened on the upper surface of the first transport unit 12A.

  The die set 17 is fixed on a holster (not shown) of a known servo press (not shown) for raising and lowering the punch mechanism 18 in a state where the horizontal direction etc. are positioned, and the transport mechanism 12 and the punch The pin receiving plate portions 18C and 18D of the mechanism 18 are supported. The die set 17 and the pin receiving plate portions 18C and 18D are not movable with respect to the holster, but the transport mechanism 12 disposed on the upper surface thereof is movable with respect to the die set 17. With this structure, the punching mechanism 18 repeatedly moves up and down, while moving the transport mechanism 12 to move the workpiece 11 in the delivery direction (the front and rear direction in the drawing) while having a plurality of designs desired for the workpiece 11 Punch holes 43, 44 can be drilled.

  The punch mechanism 18 has a punch portion 18A for holding a plurality of pins 18B (see FIG. 7C) for punching the punch holes 43 and 44 in the workpiece 11, and a lower end portion of the pin 18B at the time of punching processing. A pin receiving plate portion 18C, 18D having a plurality of small holes 41, 42, and an elevation driving portion (not shown) for raising and lowering the punch portion 18A with respect to the pin receiving plate portions 18C, 18D in the height direction (vertical direction in the drawing). And a movable piece 18E (see FIG. 7B) for adjusting the upward movement of the pin 18B at the time of punching, and a backing plate 18F and a punch holder 18G disposed on the upper surface of the punch 18A. Have. In addition, as above-mentioned, a servo press apparatus is used as a raising / lowering drive part, for example. Further, in FIG. 1A, for convenience of explanation, a guide pin or the like for guiding the lifting and lowering operation of the punching portion 18A is omitted.

  As shown in FIG. 1B, for example, a personal computer is used as the control unit 19 to appropriately control the drive mechanisms 12A2 and 12B5 and the air supply device 23 based on design data and the like drawn on the workpiece 11 Control the operation of the transport mechanism 12, the first and second fixing mechanisms 13 and 14, and the punching mechanism 18. The storage unit 19A of the control unit 19 stores, for example, design data drawn on the workpiece 11. The design data is, for example, raster data in which processing conditions by the punching device 10 are set. The input unit 19B is composed of a keyboard, a mouse and the like connected to a personal computer.

  As described above, the punching mechanism 18 repeats the lifting and lowering operation using a servo press device (not shown), but the control unit 19 appropriately adjusts the transport mechanism according to the timing of the lifting and lowering operation via the timer 19C. 12, drive the first and second fixing mechanisms 13, 14 and the punching mechanism 18. Although the details will be described later, the control unit 19 is also used as a block control unit of the punch mechanism 18, and at the time of punching processing, the operation of the movable piece 18E is controlled by the air supply device 23 The desired punched pattern can be drawn by the punched holes 43 and 44 of.

  Next, the transport mechanism 12, the first and second fixing mechanisms 13 and 14, and the first and second pressing mechanisms 15 and 16 of the punching device 10 will be described with reference to FIGS. 2 and 3. FIG. 2 is an exploded perspective view for explaining the transport mechanism 12 and the like of the punching device 10 of the present embodiment. FIG. 3 is a top view for explaining the transport mechanism 12 and the like of the punching device 10 of the present embodiment.

  As shown in FIG. 2, the transport mechanism 12 has, for example, a two-stage structure, and the second transport unit 12B is disposed on the upper surface of the die set 17, and the first transport unit 12A is a second transport unit. It is disposed on the upper surface of 12B.

  The first transport unit 12A is, for example, a substantially square frame-like body in a plan view, and an opening 12A1 is formed from the center to the back side of the punching device 10. A pair of first fixing portions 13A and 13B is disposed on the back side of the first conveyance portion 12A, and second fixing portions 13C and 13D are provided on both sides of the opening 12A1 along the delivery direction. Is provided.

  The second transport unit 12B is, for example, a substantially square frame-like body in a plan view, and an opening 12B1 is formed in the center thereof. Then, in the second transport unit 12B, the receiving pedestal 14A is disposed on the back side of the opening 12B1, and the receiving pedestal 14A extends in the lateral width direction (a direction orthogonal to the delivery direction) of the second transport unit 12B. It is arranged. Further, a pair of fixing portions 14B and 14C are disposed on the receiving pedestal 14A.

  Here, as shown in FIG. 3, the opening 12A1 of the first conveyance unit 12A is larger than the opening 12B1 of the second conveyance unit 12B, and the overlapping region of the openings 12A1 and 12B1 is punched. It is used as an hour processing area 20. A pair of receiving pedestals 17A and 17B are disposed on the die set 17 exposed from the processing area 20, and pin receiving plate portions 18C and 18D are detachably fixed to the upper surfaces of the receiving pedestals 17A and 17B. ing.

  In addition, the opening 12A1 of the first conveyance portion 12A is opened in a substantially T-shaped alphabet, and the receiving pedestal 14A of the second fixing mechanism 14 is disposed on the back side of the pin receiving plate 18C. ing. The upper surface of the receiving pedestal 14A and the upper surfaces of the pin receiving plate portions 18C and 18D are located at substantially the same height as the upper surface of the first transfer portion 12A.

  The upper surface of the first transfer portion 12A, the upper surfaces of the pin receiving plate portions 18C and 18D, and the upper surface of the receiving pedestal 14A have a gap therebetween, but form substantially the same surface. With this structure, the workpiece 11 moves while rubbing against the same surface, but the same surface is a flat surface without having a step, so that the workpiece 11 is caught on the step, It prevents twisting and coming near.

  Further, as shown in FIG. 2, the first transport unit 12A is movably disposed on the upper surface of the second transport unit 12B in the delivery direction (the front and rear direction in the drawing), and the second transport unit 12B is a die set. A movable surface 17 is provided on the upper surface so as to be movable in a direction perpendicular to the delivery direction.

  Specifically, the die set 17 is provided with a pair of linear guides 17C and 17D near end portions in the front-rear direction so as to sandwich the receiving pedestals 17A and 17B. The second transport unit 12B is connected to the die set 17 via the linear guides 17C and 17D. Further, in the second transport unit 12B, a pair of linear guides 12B2 and 12B3 is disposed in the vicinity of the end in the left-right direction so as to sandwich the opening 12B1. The first conveyance unit 12A is connected to the second conveyance unit 12B via the linear guides 12B2 and 12B3.

  Further, a connecting member 12A3 connected to the drive mechanism 12A2 is formed on the front side of the first transport unit 12A. A receiving member 12B4 is formed on the front side of the second transport unit 12B, and a drive mechanism 12A2 is fixed to the upper surface of the receiving member 12B4. A receiving member 17E is formed on the front side of the die set 17, and a drive mechanism 12B5 is fixed on the upper surface of the receiving member 17E. As the drive mechanisms 12A2 and 12B5, for example, ROBO Cylinder (registered trademark) manufactured by IAI Co., Ltd. is used. And drive mechanism 12A2, 12B5 can reciprocate the 1st conveyance part 12A and the 2nd conveyance part 12B intermittently.

  As shown in FIG. 3, in a state where the transport mechanism 12 is assembled on the upper surface of the die set 17, the connecting member 12A3 of the first transport portion 12A is fixed to the movable portion of the drive mechanism 12A2, and the second transport portion 12B is A part on the back side is fixed to the movable portion of the drive mechanism 12B5.

  According to this structure, the first conveyance unit 12A individually advances the predetermined stroke amount intermittently in the delivery direction alone via the drive mechanism 12A2, and then retracts the predetermined stroke amount backward in the delivery direction at one time Do. That is, the first transport unit 12A can transport the workpiece 11 in the delivery direction by repeating the reciprocating motion in the delivery direction.

  On the other hand, the first transport unit 12A is disposed on the upper surface of the second transport unit 12B, and the second transport unit 12B is delivered together with the first transport unit 12A via the drive mechanism 12B5. Move intermittently in the direction orthogonal to the direction. In particular, the drive mechanism 12B5 appropriately turns on in response to the control signal from the control unit 19, and moves the first and second conveyance units 12A and 12B in the orthogonal direction. Although the details will be described later, by moving the second transport unit 12B in the above-described orthogonal direction, the distance between the adjacent punch holes 43 and 44 (see FIG. 4B) is shortened than the normal distance, or , And part of the adjacent punched holes 43 and 44 can be overlapped.

  That is, in the punching device 10, the punch mechanism 18 is moved up and down in the height direction, and as described above, the workpiece 11 is intermittently moved in the delivery direction by the first transport unit 12A. Then, according to the design data, the position of the punched holes 43 and 44 is adjusted by moving the workpiece 11 in the perpendicular direction by the second transport unit 12B as appropriate, and the punched holes 43 and 44 receive the workpiece. A desired design can be expressed on the workpiece 11.

  In FIG. 3, the dotted line 31 indicates the workpiece 11, and the workpiece 11 mainly moves in the delivery direction in a state of being in contact with the upper surface of the first conveyance unit 12 </ b> A. The first fixing mechanism 13 includes a pair of first fixing portions 13A and 13B for fixing the workpiece 11 on the front side in the delivery direction with respect to the first pressing mechanism 15, and the first pressing mechanism 15. It also has a pair of second fixing parts 13C, 13D located on both sides of the processing area 20 on the rear side in the delivery direction and fixing the workpiece 11.

  The first and second fixed portions 13A to 13D are, for example, on the upper end side of the movable pin portion 21 (see FIG. 2) movable in the vertical direction with respect to the upper surface of the first transport portion 12A. The movable pin portion 21 is movable in the vertical direction in the drawing according to a control signal of the control unit 19.

  The first and second fixing portions 13A to 13D are processed between the upper surface of the first conveyance portion 12A and the plate portion 22 while the first conveyance portion 12A is intermittently advanced in the delivery direction. Fix the object 11 in a state of being firmly inserted. On the other hand, the roller portion 15A of the first pressing mechanism 15 presses the workpiece 11 in a state of being sandwiched between it and the upper surface of the receiving pedestal 14A.

  With this structure, the workpiece 11 is fixed in a state of being firmly stretched by the second fixing portions 13C and 13D at least on the upper surface of the first transfer portion 12A around the processing area 20. Furthermore, the workpiece 11 is firmly fixed to the back side of the roller portion 15A by the first fixing portions 13A and 13B. Then, the workpiece 11 is pulled out to the back side of the roller portion 15A by the first fixing portions 13A and 13B in a state where the workpiece 11 is pressed by the roller portion 15A.

  Then, in the roller portion 15A, the workpiece 11 can be smoothly delivered from the top surface of the first conveyance portion 12A by rotating while being sandwiched between the workpiece 11 and the top surface of the pedestal 14A. As a result, the workpiece 11 is twisted or deviated at least in the processing area 20 without slack of the workpiece 11 on the upper surface of the first conveyance unit 12A on the near side of the roller unit 15A. It will be in a state of being firmly extended.

  Further, the second pressing mechanism 16 is disposed on the upper surface of the second transport unit 12B on the front side of the first transport unit 12A. Then, the roller portion 16B of the second pressing mechanism 16 is provided so as to extend in the lateral direction (left and right direction in the drawing) of the workpiece 11, and sandwiches the workpiece 11 with the upper surface of the receiving pedestal 16A. And hold the workpiece 11 firmly.

  With this structure, the workpiece 11 is fixed in a state of being firmly expanded in the second fixing portions 13C and 13D, and is pressed in a state of being pressed from the upper surface by the roller portion 16B. It is pulled to the upper surface of the first conveyance unit 12A by the fixing units 13C and 13D. The roller portion 16B is rotated in accordance with the movement of the workpiece 11, whereby the workpiece 11 is smoothly pulled to the upper surface of the first conveyance portion 12A.

  That is, the operation of pulling the workpiece 11 onto the top surface of the first conveyance unit 12A is interlocked with the operation of pulling the above-described workpiece 11 from the top surface of the first conveyance unit 12A. Then, since the first and second fixing portions 13A to 13D advance the same distance, slackening of the workpiece 11 is prevented on the upper surface of the first transfer portion 12A including the periphery of the processing area 20. As a result, at least in the processing area 20, the workpiece 11 can be maintained in the state of being firmly stretched by the second fixing portions 13C and 13D without slack.

  As shown in FIG. 2, the second fixing mechanism 14 is disposed on the front side of the roller portion 15A of the first pressing mechanism 15 and is a pair of fixing portions for fixing the workpiece 11 to the receiving pedestal 14A. It has 14B and 14C. The fixed portions 14B and 14C have the same mechanism as the first and second fixed portions 13A to 13D. For example, the movable pin portion 21 movable in the vertical direction with respect to the upper surface of the receiving pedestal 14A; The movable pin portion 21 is movable in the vertical direction in the drawing according to a control signal of the control unit 19.

  The fixing portions 14B and 14C are disposed at both ends in the short direction (left and right direction in the drawing) of the workpiece 11. And while the 1st conveyance part 12A retreats back to the sending-out direction, it fixes in the state which pinched the work thing 11 firmly between the upper surface of receiving pedestal 14A, and plate part 22 firmly.

  That is, the first transport unit 12A moves rearward in the delivery direction while rubbing against the workpiece 11, but the fixing portions 14B and 14C fix the workpiece 11 to the receiving pedestal 14A. The workpiece 11 is prevented from being displaced rearward in the delivery direction. As a result, the workpiece 11 is again fixed by the first fixing mechanism 13 and moves toward the front side in the delivery direction via the first transport portion 12A while the punched hole is formed in the workpiece 11 43, 44 are drilled. Then, by maintaining the position of the workpiece 11 before the first transport unit 12A retracts, a continuous pattern can be formed on the workpiece 11 by the punch holes 43 and 44.

  Next, in FIG. 4, the positions and shapes of the small holes 41 and 42 of the pin receiving plate portions 18C and 18D and the punched holes 43 and 44 formed in the workpiece 11 will be described. FIG. 4A is an enlarged top view for explaining the pin receiving plate portions 18C and 18D disposed in the processing area 20 of the transport mechanism 12. As shown in FIG. FIGS. 4B and 4C are top views for explaining the patterns of the punched holes 43 and 44 of the punching device 10 of the present embodiment.

  As shown in FIG. 4A, in the processing area 20, pin receiving plate portions 18C and 18D having small holes 41 and 42 having different shapes in the front-rear direction in the delivery direction are disposed substantially in parallel. The shape of the small hole 41 of the front side pin receiving plate portion 18C is, for example, circular, and the shape of the small hole 42 of the rear side pin receiving plate portion 18D is, for example, a square shape. And since the lower end side of the pin 18B which pierced the punch holes 43 and 44 in the to-be-processed object 11 (refer FIG. 3) is inserted in the small holes 41 and 42, the small holes 41 and 42 are the pins 18B. It has the same shape as the cross-sectional shape. The small holes 41 and 42 may have the same shape or the same shape, but may have different opening areas.

  In the pin receiving plate portion 18C, the small holes 41 are arranged in two rows substantially in parallel before and after the delivery direction, and the distance L1 between the small holes 41 is 5 mm, for example. Then, in the row of the small holes 41 on the front side, a plurality of small holes 41 are formed with the distance L2 between the adjacent small holes 41 being 5 mm, for example, in the orthogonal direction (left and right direction in the drawing). On the other hand, in the row of small holes 41 on the rear side, as in the row of small holes 41 on the front side, a plurality of small holes 41 are formed with a distance L2 between adjacent small holes 41 of, for example, 5 mm. There is. Further, the small holes 41 on the rear side are offset from the small holes 41 on the front side by a distance L3 of, for example, 2.5 mm in the orthogonal direction.

  Also in the pin receiving plate portion 18D, the small holes 42 are formed in the same arrangement as the above-described pin receiving plate portion 18C. The pin receiving plate portion 18C and the pin receiving plate portion 18D are disposed, for example, 75 mm apart from each other as a distance L4 between their centers. The position of the small hole 41 of the pin receiving plate portion 18C and the position of the small hole 42 of the pin receiving plate portion 18D coincide with each other at the forming position in the orthogonal direction.

  Although the details will be described later, the first transport unit 12A intermittently moves in the delivery direction by a stroke amount of 5 mm, and the second transport unit 12B appropriately moves 1.25 mm in the direction perpendicular to the delivery direction. It moves intermittently by the stroke amount of.

  FIG. 4B shows an example of the punched holes 43 and 44 formed in the workpiece 11 when only the first transport unit 12A moves and the second transport unit 12B does not move. In the first row and the second row in the delivery direction, the punch holes 43 are bored in the workpiece 11 using the pin receiving plate portion 18C and the corresponding pins 18B. The punched holes 43 in the first row and the second row are drilled at a distance L3, for example, a pitch of 2.5 mm in the orthogonal direction. On the other hand, the punched holes 43 in the first row and the punched holes 43 in the second row are drilled at a distance L1, for example, a pitch of 5 mm in the delivery direction.

  Further, in the third row in the delivery direction, the punched holes 43 are formed in the workpiece 11 using the pin receiving plate portion 18D and the pins 18B corresponding thereto. The punched holes 44 are respectively drilled at the distance L3, for example, a pitch of 2.5 mm in the orthogonal direction. The second row of punch holes 43 and the third row of punch holes 44 are bored at a distance L1, for example, a pitch of 5 mm in the delivery direction.

  In the fourth row in the delivery direction, the punch holes 43 and 44 are not drilled in the workpiece 11 with the pin 18B. In this case, as illustrated, the punched holes 43 and 44 are not formed in the fourth row, and the punched holes 44 in the third row and the punched holes 43 and 44 in the fifth row have a distance L1 in the delivery direction. It is drilled in 10 mm pitch which is twice of.

  Further, in the fifth row in the delivery direction, the punch holes 43 and 44 are mixedly formed in one row using the pin receiving plate portions 18C and 18D and the pins 18B corresponding to them. In this case, as described above, the adjacent punch holes 43 and 44 are drilled at the distance L3, for example, a pitch of 2.5 mm in the orthogonal direction. That is, as the punched holes 43 and 44 formed in the fifth row, the punched holes 43 and 44 are formed by the pin 18B at a desired position every time the workpiece 11 advances at a pitch of 5 mm in the feed direction. The punched holes 43 and 44 can be mixedly formed in one row.

  In FIG. 4C, an example of the punched holes 43 and 44 formed in the workpiece 11 is shown when the second transport unit 12B is also moved as appropriate while the first transport unit 12A is moved. ing. The first row in the delivery direction is a case where the punched hole 43 is bored in the workpiece 11 using the pin receiving plate portion 18C and the corresponding pin 18B. In this case, for example, when the punched holes 43 are bored in the rear row of the pin receiving plate portion 18C, the second transport portion 12B is moved to the left side in the drawing only once in the orthogonal direction. Next, when punching the punch holes 43 in the front row of the pin receiving plate portion 18C, the second transfer portion 12B is moved to the right in the drawing only once in the orthogonal direction and returned to the original position. ing. As a result, an arrangement in which the punched holes 43 are adjacent to each other at a distance L5, for example, 1.25 mm and an arrangement in which the punched holes 43 are perforated at a distance L2 such as 5 mm pitch Can be formed.

  In addition, in the second row in the delivery direction, when forming the punch holes 44 in the row on the rear side of the pin receiving plate portion 18D contrary to the first row, the second transport portion 12B is orthogonal to the above It is moved to the right side of the paper only once in the direction. Thereafter, when the punch holes 43 are bored in the front row of the pin receiving plate portion 18C, the second transport portion 12B is returned to the original position. As a result, the arrangement in which the punched holes 43 and 44 are adjacent to each other at a distance L5, for example, 1.25 mm, and the arrangement in which the punched holes 43 are formed at a distance L2, for example, 5 mm Can be formed.

  Next, in FIG. 5 and FIG. 6, after 1st conveyance part 12A advances 35 mm intermittently in the sending direction intermittently, punching processing in 1 cool which retreats 35 mm at a time is explained. 5 (A) and 5 (C) are side views explaining the conveyance condition of the to-be-processed object 11 of the punching apparatus 10 of this embodiment. 5 (B) and 5 (D) are top views explaining the conveyance condition of the to-be-processed object 11 of the punching apparatus 10 of this embodiment. 6 (A) and 6 (C) are side views for explaining the transport condition of the workpiece 11 of the punching device 10 of the present embodiment. 6 (B) and 6 (D) are top views explaining the conveyance condition of the to-be-processed object 11 of the punching apparatus 10 of this embodiment.

  In FIGS. 5A and 5B, the workpiece 11 is fixed to the upper surface of the first conveyance unit 12A by the first fixing mechanism 13 and the workpiece 11 is fed in the delivery direction (the front and rear direction in the drawing). The conveyance initial stage which conveys is shown. 5 (A) is a side view corresponding to the top view shown in FIG. 5 (B).

  As shown in FIG. 5A, at the initial stage of conveyance, in the first and second fixed portions 13A to 13D as the first fixing mechanism 13, the movable pin portions 21 are lowered to the bottom dead center, The workpiece 11 is fixed in a state of being firmly sandwiched by the upper surface of the first transfer portion 12A and the plate portion 22. On the other hand, in the fixed portions 14B and 14C, which are the second fixing mechanism 14, the movable pin portions 21 are raised, and the workpiece 11 is not fixed to the upper surface of the receiving pedestal 14A.

  Due to the fixed state of the workpiece 11, the first transport unit 12A advances intermittently seven times at a pitch of 5 mm, for example, in the delivery direction (front and rear direction in the drawing), but on the upper surface of the receiving pedestal 14A The workpiece 11 is not fixed at the fixing portions 14B and 14C, and its movement is not hindered.

  As shown in FIG. 5B, in the second fixing portions 13C and 13D, the workpieces 11 on at least both sides of the processing area 20 are fixed by the plate portion 22 extended in the feeding direction. In this fixed state, in particular, the workpiece 11 in the processing area 20 is in a state of being firmly expanded without being twisted or coming close, and the workpiece 11 is desirably positioned with high accuracy. The punched holes 43 and 44 (see FIGS. 4B and 4C) are punched.

  Further, the movable pin portions 21 of the first and second fixed portions 13A to 13D and the movable pin portions 21 of the fixed portions 14B and 14C are arranged in a line along the feeding direction (the front and rear direction in the drawing) and movable The separation width between the pin portions 21 is substantially the same as the width in the short direction (left and right direction in the drawing) of the workpiece 11. Then, on the upper surface of the first transport unit 12A, the workpiece 11 is also positioned by the movable pin portion 21, and it becomes difficult to be deviated or twisted. Although the fixed portions 14B and 14C do not fix the workpiece 11, the movable pin portion 21 guides the workpiece 11 and supports the workpiece 11 so that the workpiece 11 is not twisted.

  In FIGS. 5C and 5D, the workpiece 11 is fixed to the upper surface of the first conveyance unit 12A by the first fixing mechanism 13, and the workpiece 11 is intermittently performed at a constant stroke amount. Is conveyed in the delivery direction (the front and rear direction in the drawing), and the stage at which the conveyance ends after punching the workpiece 11 is shown. FIG. 5C is a side view corresponding to the top view shown in FIG. 5D.

  As shown in FIG. 5C, the first transport unit 12A fixes the workpiece 11 on the upper surface via the first fixing mechanism 13 in a fixed state, for example, 5 mm by one forward movement. Intermittently advance and move forward 35 mm in total. Then, in the punching mechanism 18, the punching portion 18A (see FIG. 1A) is lowered at the time of stopping the above-mentioned intermittent operation of the first conveyance portion 12A, and the punching holes 43 and 44 are formed in the workpiece 11 Do. As a result, nine rows of punched holes 43, 44 are formed in the workpiece 11 at intervals of 5 mm in the delivery direction.

  As described above, in one punching step, the punched holes 43 and 44 are drilled in the workpiece 11 with the four rows of pins 18B (see FIG. 7C) arranged in the front-rear direction of the delivery direction. . Therefore, in the third row of punched holes 43 and 44 from the rear side, the punched holes 43 are not formed by the pins 18B on the front side in the feed direction, but it depends on the design data. The holes 43, 44 may not be drilled. In the six rows of punched holes 43 and 44 from the front side, the punched holes 43 and 44 are formed at desired locations as design data.

  That is, in one punching process, the pins 18B are not suitably drilled in the workpiece 11 with all the pins 18B, but the pins 18B are suitably drilled in the workpiece 11 according to design data. It is selected. At this time, the second transport unit 12B moves 1.25 mm in a single operation, for example, in a direction perpendicular to the delivery direction according to a control signal of the control unit 19, so that the space between the punched holes 43 and 44 By adjusting the separation distance, various patterns of the punched holes 43 and 44 can be expressed on the workpiece 11.

  As shown in FIG. 5D, the arrangement region of the first fixing portions 13A and 13B of the first conveyance portion 12A corresponds to the receiving pedestal 14A disposed in the second conveyance portion 12B, as shown in FIG. The above-mentioned 35 mm is advanced from the state shown in B). As a result, the workpiece 11 is also advanced by 35 mm in the delivery direction.

  At this time, the workpiece 11 is firmly pressed on the upper surface of the receiving pedestal 14A by the roller portion 15A of the first pressing mechanism 15. On the other hand, the workpiece 11 is fixed at the front side of the roller portion 15A by the first fixing portions 13A and 13B in the delivery direction, and the rear side of the roller portion 15A is fixed to the second fixing portions 13C and 13D. It is fixed by Then, the workpiece 11 passes the lower surface of the roller portion 15A while being pulled toward the front side of the roller portion 15A by the first fixing portions 13A and 13B.

  As a result, when the workpiece 11 moves in the delivery direction, it loosens, slips, or twists between the first fixing portions 13A, 13B and the second fixing portions 13C, 13D. Is prevented. Then, in a state where the workpiece 11 is securely extended by the first fixing mechanism 13 and the first pressing mechanism 15, the punch mechanism 18 punches the punch holes 43 and 44 to process the workpiece 11. Punches 43 and 44 having a desired shape are drilled in the object 11 with high positional accuracy.

  In FIGS. 6A and 6B, the first transport unit 12A advances 35 mm in the delivery direction (the front and rear direction in the drawing) by 35 mm to punch the punched holes 43 and 44 in the workpiece 11, and An initial stage of retraction is illustrated in which the first transport unit 12A is retracted backward in the delivery direction. 6 (A) is a side view corresponding to the top view shown in FIG. 6 (B).

  As shown in FIG. 6 (A), at the initial stage of reverse movement, first, the movable pin portions 21 of the fixed portions 14B and 14B as the second fixing mechanism 14 are lowered to the bottom dead center, and the workpiece 11 is removed. In the state of being firmly held between the upper surface of the receiving pedestal 14A and the plate portion 22, it is fixed. Thereafter, the movable pin portions 21 of the first and second fixed portions 13A to 13D are lifted, and the workpiece 11 is not fixed to the upper surface of the first transfer portion 12A.

  As shown in FIG. 6B, the fixing portions 14B and 14C fix the workpiece 11 in the vicinity of the roller portion 15A to the upper surface of the pedestal 14A. At this time, the workpiece 11 is in an expanded state without being twisted or deviated by the first fixing mechanism 13 and the first pressing mechanism 15, and the workpiece 11 in that state is fixed to the fixing portion By fixing by 14B and 14C, the said state of the to-be-processed object 11 can be maintained continuously. After that, the fixed state by the second fixing portions 13C and 13D is released, so that the elongated state of the workpiece 11 is slightly eliminated, but the workpiece 11 is subsequently dropped or twisted. There is no need to

  In FIG. 6C and FIG. 6D, in a state in which the workpiece 11 is fixed to the upper surface of the receiving pedestal 14A by the fixing portions 14B and 14C, the first transport portion 12A alone delivers 35 mm. It shows the end stage of reverse movement after moving backward in the direction (the front and rear direction in the drawing). 6C is a side view corresponding to the top view shown in FIG. 6D.

  As shown in FIG. 6C, the first transport unit 12A retracts 35 mm at a time in a state in which the workpiece 11 is fixed on the second transport unit 12B by the second fixing mechanism 14. . At this time, the first transport unit 12A moves backward while rubbing with the workpiece 11, but the second fixing mechanism 14 does not move in the forward and backward direction with respect to the second transport unit 12B. And the workpiece 11 is fixed. With this fixed state, it is possible to prevent the workpiece 11 from moving backward with the first transport unit 12A in the delivery direction.

  As shown in FIG. 6D, the second fixed portions 13C and 13D return to the vicinity of the processing area 20 in which the pin receiving plate portions 18C and 18D are disposed by the retraction of the first transfer portion 12A. That is, the tip end sides of the plate portions 22 of the second fixing portions 13C and 13D return to the vicinity of the fourth row of punch holes 43 and 44 from the rear formed in the previous punching process. Thereafter, as described above with reference to FIGS. 5A and 5B, the second fixing portions 13C and 13D are at least provided on both sides of the arrangement region of the pin receiving plate portions 18C and 18D in the processing region 20. The workpiece 11 is fixed. As a result, the workpiece 11 located in the processing area 20 is again in a firmly stretched state, and punch holes 43 and 44 having a desired shape are drilled in the workpiece 11 with high positional accuracy. In addition, the punch holes 43 and 44 are added to the line of the punch holes 43 and 44 from the rear in the next cool punching process according to the design data.

  As described above, the first transport unit 12A repeats forward and backward stroke amounts of 35 mm, but at the timing when the first transport unit 12A stops after advancing 5 mm by the punching mechanism 18, the punching mechanism 18 The punched holes 43 and 44 are bored in the workpiece 11. By this punching method, a row of punched holes 43 and 44 is punched in the workpiece 11 with a positional accuracy of 5 mm in the feed direction. Then, in each row of the punched holes 43, 44, the shape or size of each punched hole 43, 44 is appropriately changed according to the design data, or a part of the punched holes 43, 44 is overlapped. can do.

  Next, FIG. 7 illustrates a method in which the perforations of the punch holes 43 and 44 are controlled by the position of the movable piece 18E of the punch mechanism 18. FIG. 7A is a top view for explaining the punching mechanism 18 of the punching device 10 of the present embodiment. FIG. 7B is a perspective view for explaining the movable piece 18E of the punching mechanism 18 of the punching device 10 of the present embodiment. FIG. 7C and FIG. 7D are side views for explaining the punching process of the punching device 10 of the present embodiment.

  FIG. 7A shows the slide plate portion 51 on which the movable piece portion 18E of the punching mechanism 18 is disposed. The slide plate portion 51 is a member which is disposed on the upper surface of the punch portion 18A (see FIG. 1A) for holding the plurality of pins 18B, and which supports the sliding movement of the movable piece 18E disposed on the upper surface. .

  As illustrated, in the slide plate portion 51, a plurality of holes 52 for moving the pin 18B in the vertical direction with respect to the punch portion 18A, and the movable piece 18E slide in the delivery direction (the front and rear direction in the drawing). A guide wall 53 for movement is formed. As described above, two rows of small holes 41 are arranged before and after the delivery direction in the pin receiving plate portion 18C at the front stage (see FIG. 4A), and the pin receiving plate portion 18D at the rear stage (FIG. In the same manner, the small holes 42 in two rows are arranged. That is, the punch 18A holds the pins 18B in the front-rear direction in the delivery direction, corresponding to all the small holes 41, 42 arranged in the four rows. Therefore, four slide plate portions 51 are disposed on the upper surface of the punch portion 18A, and between the guide wall portions 53 of the respective slide plate portions 51, the movable piece portions 18E of the same number as the pins 18B are disposed. ing.

  As shown in FIG. 7B, the movable piece 18E slides the movable portion 54, and slides the movable portion 54, for example, a double acting air cylinder 55 (see FIG. 7D). A fixed portion 56 connected to the movable portion 54 via the air cylinder 55 and fixed to the upper surface of the slide plate portion 51 is provided. The upper surface 57 of the fixed portion 56 is provided with compressed air supply units 58 and 59 for supplying compressed air to the air cylinder 55. Tubes (not shown) for flowing the compressed air from the air supply device 23 (see FIG. 1B) are connected to the supply portions 58 and 59, respectively.

  The movable portion 54 prevents the upward movement of the pin 18B, allows the punch 18 to punch the punch holes 43 and 44 with the pin 18B, and allows the upward movement of the pin 18B, and punches the pin 18B. And a non-punched surface 61 which does not pierce the holes 43 and 44. The punched surface 60 is a flat surface which abuts on the sliding surface 62 (see FIGS. 7A and 7C) of the slide plate portion 51, and the non-punch surface 61 is separated from the sliding surface 62. It is an inclined surface that inclines upward with respect to the sliding surface 62. The non-punch surface 61 is a surface that is recessed upward with respect to the sliding surface 62, and may have a shape that allows the pin 18B to move upward, and may be, for example, a curved surface.

  FIG. 7C shows a state in which the workpiece 11 is not permitted to be punched by the punch holes 43 and 44 by the pin 18B. Although not shown, a backing plate 18F (see FIG. 1A) and a punch holder 18G (see FIG. 1A) are disposed on the upper surface of the movable piece 18E, and the movable piece 18E is When the pin 18B is pushed upward, the movement of the movable piece 18E is restricted upward. That is, the movable piece portion 18E slides between the backing plate 18F and the slide plate portion 51.

  As described above, in the punching process, all the pins 18B held by the punch portion 18A are lowered, and the lower ends of the pins 18B are in contact with the workpiece 11 and the like. The compressed air is not sent from the air supply device 23 to the movable piece portion 18E by the pin 18B which does not punch the punched holes 43 and 44 by the control signal of the control unit 19, and the air cylinder 55 does not operate. As a result, when the lower end of the pin 18B abuts on the workpiece 11, the pin 18B moves upward using the space between the non-punch surface 61 of the movable piece 18E and the sliding surface 62, and the pin 18B moves upward. The punch holes 43 and 44 are not drilled into the workpiece 11 by the above-described method. When the movable piece 18E is in the state shown in FIG. 7D in the previous punching step, compressed air is sent from the air supply device 23 to the movable piece 18E, as shown in FIG. Return to the state of).

  FIG. 7D shows a state in which the workpiece 11 is permitted to be punched by the punch holes 43 and 44 by the pin 18B. By the control signal of the control unit 19, compressed air is sent from the air supply device 23 to the movable piece portion 18E in the pin 18B for drilling the punched holes 43 and 44, and the air cylinder 55 extends forward. As a result, the movable portion 54 of the movable piece 18E slides forward, and the punched surface 60 closes the upper surface of the hole 52, so that the upper end of the pin 18B abuts against the punched surface 60, and the upper portion of the pin 18B Movement is blocked. As a result, the pin 18B penetrates the workpiece 11, and punched holes 43 and 44 are bored in the workpiece 11. The lower end of the pin 18B in which the punched holes 43 and 44 are bored in the workpiece 11 is inserted into the small holes 41 and 42 (see FIG. 4A) of the pin receiving plate portion 18C. Becomes difficult to break, such as bending. If the movable piece 18E is in the state shown in FIG. 7D in the previous punching step, compressed air is not sent from the air supply device 23 to the movable piece 18E, and the state is maintain.

  In the present embodiment, the transport mechanism 12 of the punching apparatus 10 includes a first transport portion 12A that reciprocates in the delivery direction, and a second transport portion 12B that reciprocates in the direction orthogonal to the delivery direction. Although the case where the first fixing mechanism 13 is provided for the first transport unit 12A and the second fixing mechanism 14 is provided for the second transport unit 12B has been described, It is not limited to For example, the transport mechanism 12 of the punching device 10 is constituted only by the first transport portion 12A reciprocating in the delivery direction, and the first transport portion 12A is movably disposed on the upper surface of the die set 17, The fixing mechanism 13 may be disposed in the first transport unit 12A, and the second fixing mechanism 14 may be disposed in the die set 17. That is, even in the structure in which the transport mechanism 12 is configured by the first transport portion 12A and does not move in the direction orthogonal to the delivery direction, the first and second fixing mechanisms 13 and 14 and the first and second clamps Forming the punch holes 43 and 44 in a precise shape with high positional accuracy with respect to the long workpiece 11 as in the punching device 10 of the above-described embodiment by having the mechanisms 15 and 16 and the like. Can.

  Further, although the case where the first pressing mechanism 15 and the second pressing mechanism 16 are disposed in the direction orthogonal to the delivery direction of the workpiece 11 has been described, the present invention is not limited to this case. The first pressing mechanism 15 and the second pressing mechanism 16 are disposed in a direction intersecting with the delivery direction, and press firmly so that the workpiece 11 is not twisted or deviated during its movement. Any design change is possible as long as it is in the proper direction. Other various modifications are possible without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 punching apparatus 11 workpiece 12 conveyance mechanism 12A 1st conveyance part 12B 2nd conveyance part 13 1st fixing mechanism 13A, 13B 1st fixing | fixed part 13C, 13D 2nd fixing | fixed part 14 2nd fixing mechanism 14A Receiving pedestal 14B, 14C Fixing part 15 1st pressing mechanism 15A Roller part 16 2nd pressing mechanism 16A Receiving pedestal 16B Roller part 17 Die set 18 Punching mechanism 18A Punching part 18B Pin 18C, 18D Pin receiving plate part 18E Movable piece Part 20 Machining area 41, 42 Small hole 43, 44 Punch hole 51 Slide plate part 60 Punch surface 61 Non-punch surface

Claims (7)

In a punching device for moving a strip-like workpiece in a delivery direction and drilling a plurality of punched holes in the workpiece by a punching mechanism,
A first transport unit that reciprocates in the delivery direction;
A die set supporting the first transport unit;
The workpiece is disposed relative to the first transport unit when disposed relative to the first transport unit and the first transport unit travels forward with the workpiece along the delivery direction . A first fixing mechanism for fixing;
A first receiving pedestal disposed to the die set, and a fixing portion disposed to the first receiving pedestal, wherein the first transport portion is separate from the workpiece; A second fixing mechanism that fixes the workpiece with the first receiving pedestal and the fixing portion when returning to the rear in the delivery direction;
Wherein while being disposed in front of the feeding direction than the processing region provided in the first conveying portion, in a direction intersecting the feeding direction, the presses said workpiece relative to said first receiving pedestal Equipped with a pressing mechanism of 1,
The first fixing mechanism is
A first fixing portion that fixes the workpiece so as to sandwich the processing area on the rear side in the delivery direction with respect to the first pressing mechanism;
And a second fixing portion for fixing the workpiece on the front side in the delivery direction with respect to the first pressing mechanism.
The punching device is characterized in that the punching mechanism pierces the punching hole in a state where the workpiece is fixed by the first fixing mechanism. And a second pressing mechanism that is disposed rearward of the processing area in the delivery direction and that presses the workpiece in a direction that intersects the delivery direction.
The second pressing mechanism is disposed with respect to a second receiving pedestal disposed in the die set, and presses the workpiece against the second receiving pedestal. The punching apparatus according to 1. In a punching device for moving a strip-like workpiece in a delivery direction and drilling a plurality of punched holes in the workpiece by a punching mechanism,
A first transport unit that reciprocates in the delivery direction;
A second transport unit that supports the first transport unit and reciprocates in a direction that intersects the delivery direction;
The workpiece is disposed relative to the first transport unit when disposed relative to the first transport unit and the first transport unit travels forward with the workpiece along the delivery direction. A first fixing mechanism for fixing;
The workpiece is placed on the second transport unit when being disposed relative to the second transport unit and the first transport unit returns to the rear in the delivery direction separately from the workpiece. A second fixing mechanism for fixing
A second processing unit that is disposed forward of the processing area provided in the first transport unit in the delivery direction, and presses the workpiece against the second transport unit in a direction that intersects the delivery direction; Equipped with a pressing mechanism of 1 ,
The first fixing mechanism is
A first fixing portion that fixes the workpiece so as to sandwich the processing area on the rear side in the delivery direction with respect to the first pressing mechanism;
And a second fixing portion for fixing the workpiece on the front side in the delivery direction with respect to the first pressing mechanism.
The punching device is characterized in that the punching mechanism pierces the punching hole in a state where the workpiece is fixed by the first fixing mechanism. Furthermore, a die set supporting the second transport unit ;
And a second pressing mechanism that is disposed in the second transport unit on the rear side in the delivery direction with respect to the processing area, and presses the workpiece in a direction that intersects the delivery direction ,
When the first transport unit returns to the rear in the delivery direction, the second transport mechanism does not return to the rear in the delivery direction, and the second fixing mechanism does not return to the second transport unit. The punching device according to claim 3 , wherein the workpiece is fixed on a transport unit. The punching mechanism
A punch portion for holding a plurality of pins for drilling the punched holes in the workpiece;
And a pin receiving plate portion formed with a plurality of small holes for receiving lower end sides of the plurality of pins;
The pin receiving plate portion is disposed on the upper surface of the die set exposed in the processing area, and the upper surface of the pin receiving plate portion has substantially the same height as the upper surface of the first transport portion. The punching apparatus according to any one of claims 1 to 4, characterized in that: The pin receiving plate portions are arranged in two rows in the feeding direction.
The punching device according to claim 5 , wherein the small holes of the pin receiving plate portion at the front stage have at least a shape or an opening area different from those of the small holes of the pin receiving plate portion at the rear stage. The punching mechanism further comprises
A movable piece portion disposed on the upper surface of the punch portion to adjust the movement of the pin in the vertical direction with respect to the punch portion;
A frame control unit for controlling the movement of the movable frame portion;
The movable piece portion has a punch surface which does not allow the pin to move upward of the punch portion, and a recess which allows the pin to move upward of the punch portion by being recessed upward with respect to the punch surface And have a punched surface,
When forming the punched hole in the workpiece, the piece control unit arranges the punched surface of the movable piece above the pin and does not drill the punched hole in the workpiece. case, punching device according to claim 5 or claim 6, characterized in that placing the non-punch side of the movable piece portion above the punching unit.

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