Beating device

Abstract

To inhibit occurrence of problems due to change of a position of a movable surface plate relative to holding means.SOLUTION: A die cutter 100 includes: a movable surface plate 1 and a fixed surface plate 2 which are disposed facing each other; a moving mechanism which moves the movable surface plate 1 to the fixed surface plate 2; punching area transport means which transports a sheet material S to a punching area sandwiched between the movable surface plate 1 and the fixed surface plate 2; and a transport belt pair (14, 15) functioning as holding means which holds the sheet material S located in the punching area. The die cutter 100 further includes protruding parts 29 at the movable surface plate 1 side and a movable plate 33 at the transport belt pair (14, 15) side which move the transport belt pair (14, 15) to the side of the fixed surface plate 2 (the upper side etc.) in response to movement of the movable surface plate 1 toward the fixed surface plate 2.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a punching device. [Background technology]

[0002] Conventionally, a movable surface plate and an opposing surface plate are arranged opposite to each other in the vertical direction, and the movable surface plate is faced to the opposing surface plate. and a moving mechanism for moving the workpiece up and down in accordance with the moving platen and the opposing platen. and a conveying mechanism for conveying the workpiece to the punching area and bringing the movable surface plate close to the opposing surface plate. The workpiece is cut into a predetermined shape by a cutting die attached to one of the moving surface plate and the opposing surface plate. A flat-plate punching device is known that punches out the workpiece in a flat manner.

[0003] As a flat-plate punching device, Patent Document 1 describes a device that uses a gripper as an endless chain. The punching device is configured to have a plurality of conveying mechanisms arranged in a single ring. The tip of the sheet is gripped by a gripper and the endless chain is rotated. In this way, the leading edge of the sheet is gripped by the gripper. In the conveying configuration, the gripper stops immediately after passing through the punching area and the moving platen is replaced by the opposing platen. This stops the sheet held by the gripper in the punching area, It can be punched into a desired shape. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5399231 [Patent Document 2] Japanese Patent Application Publication No. 2017-213609 Summary of the Invention [Problem to be solved by the invention]

[0005] In a flat-plate punching device where the cutting die is attached to the opposing surface plate, the tip of the cutting blade of the cutting die on the opposing surface plate is moved. The workpiece is sandwiched between the moving surface plate and the opposing surface plate, and the moving surface plate is further moved toward the opposing surface plate. The workpiece is sandwiched between the moving surface plate and the cutting blade, and the The position of the punched part relative to the moving platen is fixed. When the moving surface plate moves further toward the counter surface plate, the workpiece sandwiched between the moving surface plate and the counter surface plate is The distance between the part that is pulled and the part that is held by the holding means such as a gripper increases, and the workpiece is pulled. A tension force may be applied, which may damage the workpiece. In addition, before the workpiece is sandwiched between the opposing surface plate and the cutting die, the workpiece is held by the holding means. With the position of the part held by the workpiece fixed, the moving surface plate that is in contact with the workpiece moves to the opposing surface plate. When the workpiece moves toward the moving surface plate, the workpiece moves along the plane of the moving surface plate that contacts the workpiece. The workpiece and the moving surface plate move in a direction parallel to the plane (horizontal direction), and the relative positions of the workpiece and the moving surface plate are As a result, the area of ​​the workpiece facing the moving surface plate is shifted, and the There is a risk that the positional relationship with the die may also be misaligned, resulting in a misalignment of the part of the workpiece that is being punched. There is a problem. Thus, the problem caused by the change in the position of the moving surface plate relative to the holding means is solved by the fact that the holding means The gripper is not limited to a structure that holds the tip of a workpiece like a conventional gripper. As in the case of the sheet material conveying mechanism using the belt described in 2, the workpiece faces the cutting die. A conveying mechanism is provided in which the workpiece is sandwiched and held by a belt member arranged on the outside in the width direction of the enclosure. This is a problem that can also occur in a configuration applied to a punching device equipped with a movable surface plate and an opposing surface plate. . [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides a moving surface plate and an opposing surface plate, a moving mechanism that moves the movable surface plate toward the opposing surface plate; and a punching area sandwiched between the movable surface plate and the opposing surface plate. Punching position a punching area conveying means for conveying the workpiece to the punching area; ,of Preparation The moving mechanism moves the movable surface plate closer to the opposing surface plate, thereby performing a punching process in which a workpiece is punched into a predetermined shape by a punching die attached to at least one of the movable surface plate and the opposing surface plate. In the punching device, The movable surface plate is located below the opposing surface plate, and in the punching process, the punching area transport means transports the workpiece to the punching position and stops the workpiece once, and then moves the movable surface plate from a lower stop position to an upper stop position, thereby punching out the workpiece sandwiched between the movable surface plate and the opposing surface plate into a shape corresponding to the punching die, and then stops the movable surface plate midway as it descends from the upper stop position to the lower stop position, and resumes transport of the workpiece by the punching area transport means, and then resumes descending of the movable surface plate toward the lower stop position. It is characterized by the following features. [Effects of the Invention]

[0007] According to the present invention, it is possible to suppress the change in the position of the movable surface plate relative to the holding means, This has the excellent effect of suppressing problems caused by changes in position. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic perspective view of a die-cutting system. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. 2 is a front view of the die cutter with the front and rear frames not shown. [Figure 6] FIG. 10 is a rear view of the die cutter with the front and rear frames not shown. [Figure 7] FIG. 2 is a perspective view of the die cutter with the front frame and the rear frame not shown. [Figure 8] Schematic diagram of the upstream side of the die cutter. [Figure 9] FIG. [Figure 10]FIG. [Figure 11] FIG. [Figure 12] Schematic diagram of the front of the die cutter. [Figure 13] Block diagram of a die cutter. [Figure 14] FIG. [Figure 15] FIG. 10 is an explanatory diagram showing the displacement of the lift transmission rod and the cylindrical portion when the lift transmission mechanism is driven so that the cylindrical portion moves from the bottom dead center to the top dead center. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, the same or equivalent components and members shown in each drawing will be denoted by the same reference numerals. The dimensions of the components in each drawing are for ease of understanding. In addition, the drawings are enlarged or reduced in size to explain the embodiments. Some of the less important components are omitted from the illustration.

[0010] Hereinafter, an embodiment of the punching device according to the present invention and a punching processing system including the punching device will be described. The following explains the state of the system.

[0011] FIG. 1 is a schematic perspective view of a die-cutting system 500, which is a punching processing system according to this embodiment. FIG. The die-cutting system 500 is a die-cutting system that cuts a sheet material from the upstream side in the conveying direction of the sheet material to be processed. The apparatus is equipped with a feeder 200, a registration device 300, a die cutter 100, and a discharge processing device 400. can.

[0012] In the die-cutting system 500, the sheet feeder 200, which is a workpiece supplying means, The sheet material placed on the shelf is supplied toward the registration device 300. The registration device 300 is a means for moving the sheet material in a direction parallel to the conveying direction of the sheet material (the X-axis direction in the drawing). The sheet material is adjusted to the inclination relative to the die and the position of the sheet material in the width direction (Y-axis direction in the figure). The sheet material is conveyed toward the cutter 100. The die cutter 100 is a punching device. The sheet material supplied from the moving device 300 is temporarily stopped and the moving platen is fixed. The sheet material is sandwiched between the fixed platen and the die to perform the punching process. The discharge processing device 400 is a device for processing the sheet that has been punched by the die cutter 100 and discharged. The sheet material is then separated into a finished product and a surplus part. It is equipped with a separator that separates the products and a stacker that accumulates the separated products. As shown in FIG. 1, the die cutter 100 has an operation panel 101 on its top surface.

[0013] Next, the die cutter 100 will be described. 2 to 7 are explanatory diagrams of the die cutter 100 with the exterior cover removed. 2 is a front view of the die cutter 100. FIG. 3 is a view of the die cutter as seen from the right side in FIG. 2. FIG. 4 is a side view of the upstream side of the die cutter 100 as viewed from the left side in FIG. 2. FIG. 5 is a diagram showing the front view of FIG. 2 with the front frame 5 and the rear frame 6 hidden. 6 is a front view of the cutter 100, and FIG. 6 shows the front frame 5 and the rear frame 6 in the state shown in FIG. 7 is a rear view of the die cutter 100 with the front frame 6 not shown. 1 is a perspective view of the die cutter 100 with the die cutter 5 and the rear frame 6 not shown. FIG. 8 is an explanatory diagram schematically illustrating an upstream side view of the die cutter 100 shown in FIG. 3. .

[0014] As shown in FIGS. 2 to 7, the die cutter 100 is attached to the frame (5, 6, 7, etc.) of the device. The movable surface plate 1 is movable up and down relative to the moving surface plate 1, and the movable surface plate 2 is placed above the moving surface plate 1 and is attached to the frame of the device. and a fixed surface plate 2 fixed relative to the surface plate. The die cutter 100 has a metal frame structure including a base frame 7, a front frame 5, a rear frame 6, an upstream guide frame 21, and a downstream guide frame 23. The frame 7 has casters for movement and a mechanism for preventing movement. The rear frame 6 is a plate-like member, and its lower portion is fixed to the base frame 7. The upstream guide frame 21 and the downstream guide frame 23 extend in the width direction of the device, and is a square bar-shaped member fixed to the front frame 5 and the rear frame 6. The fixed surface plate 2 is fixed to the upper part of the front frame 5 and the rear frame 6. As shown in FIG. 1, a cutting die 8 having a cutting blade 81 is placed under a fixed surface plate 2 with a stainless steel plate 82 sandwiched therebetween. On the other hand, a face plate 9 is fixed to the upper surface of the movable surface plate 1.

[0015] The die cutter 100 has four lift transmission mechanisms as a moving mechanism for moving the movable base 1 up and down. 4 (4a, 4b, 4c, 4d), and four press motors 3 (3a, 3b, 3c, 3d) The movable surface plate 1 has four cylindrical portions 10 ( The lift transmission mechanism 4 is fixed to the input circuit. The press motor 3 is provided with a crank mechanism that converts the rotational motion of the press motor 3 into a reciprocating motion in the up and down direction. The lifting transmission mechanism 4 transmits the lifting motion to the columnar portion 10, so that the movable surface plate 1 moves up and down. Move in the direction. 2 to 7 show a state in which all four cylindrical portions 10 are positioned at the bottom dead center of the lift transmission mechanism 4. 1 is an explanatory diagram of a state in which the movable surface plate 1 is at its farthest position from the fixed surface plate 2 within the movable range of the movable surface plate 1. . 8, the movable surface plate 1 is raised to the upper stop position, and the sheet material is cut by the cutting blade 81 of the cutting die 8. FIG. 10 is an explanatory diagram of the state in which S has been punched out.

[0016] As shown in FIG. 3, the movable surface plate 1 has a cross section X in the center of the width direction on the upstream side of the conveying direction. The movable surface plate is provided with an upstream guided shaft 11 that is parallel to the shaft and protrudes upstream in the conveying direction. As shown in Figure 4, 1 is placed in the center of the width direction on the downstream side of the conveying direction, parallel to the X axis in the figure. The downstream guided shaft 12 protrudes downstream in the conveying direction. The downstream guided shaft 12 is provided with an upstream guided bearing 11a and a downstream guided bearing 11b. A guide 12a is provided.

[0017] As shown in FIG. 3, the upstream guide frame 21 has an upstream guide portion 2 at the center in the width direction. The upstream guide portion 22 is provided with two guide members extending in the vertical direction and projecting downstream in the conveying direction. The upstream guide rails 22a are provided, and the upstream guide rails 22a are provided. By engaging the guide shaft 11a in a sandwiching manner, the upstream guided shaft 11 can move in the width direction. Regulate. As shown in FIG. 4, the downstream guide frame 23 has a downstream guide The downstream guide portion 24 protrudes upstream in the conveying direction and extends in the vertical direction. The two downstream guide rails 24a are provided to support the downstream side. By engaging the guided bearing 12a in a sandwiching manner, the width direction of the downstream guided shaft 12 Restrict movement of people. The upstream guide portion 22 and the downstream guide portion 24 guide the upstream guided shaft 11 and the downstream guided shaft 12. By restricting the movement of the guided shaft 12 in the width direction, the movable surface plate 1 moves up and down. The displacement of the width direction of the sheet 1 can be prevented.

[0018] The die cutter 100 cuts the sheet material S supplied from the registration device 300 into the inside of the device. The inlet roller pair 20 is disposed at the rear side in the width direction relative to the movable surface plate 1, and The conveyor belt pair (14, 15) is provided to convey the material S. Also, the conveyor belt pair (14, 15) is provided to convey the material S. A conveyance drive motor 13 that is a drive source for the pair of belts, and a conveyance drive transmission mechanism 1 that transmits the driving force. The inlet roller pair 20 includes an inlet driving roller 20a and an inlet driven roller 20b. By driving the conveyance drive motor 13, the inlet drive roller 20a and the lower conveyance belt 1 4 and the upper conveyor belt 15 move endlessly at the same surface moving speed. The sheet material S is nipped at multiple locations in the width direction by the conveyor belts 20 and conveyed toward the conveyor belt pair. The conveyor belt 14 and the upper conveyor belt 15 convey the sheet material S to one side in the width direction (the rear side of the device). The end is pinched and transported.

[0019] As shown in FIG. 8, the die cutter 100 is a belt that supports a pair of conveyor belts (14, 15). The belt support mechanism 32 is a fixed plate fixed to the rear frame 6. and a movable plate 33 that is movable in the vertical direction relative to the fixed plate 34. do. 9 to 11 show the state in which a part of the pair of conveyor belts (14, 15) moves in conjunction with the elevation of the movable surface plate 1. FIG.

[0020] FIG. 9 is a front view of the pair of conveyor belts (14, 15), and FIG. 9(a) is an explanatory view before punching. FIG. 9(b) is an explanatory diagram of the punching process. FIG. 10 is a rear view of the pair of conveyor belts (14, 15) and the movable surface plate 1. 10(b) is an explanatory diagram before punching, FIG. 10(b) is an explanatory diagram during punching, and FIG. 10(c) is an explanatory diagram at the time of punching. is. FIG. 11 is a side view of the downstream side of the pair of conveyor belts (14, 15) and the movable surface plate 1. 11(a) is an explanatory diagram before punching, FIG. 11(b) is an explanatory diagram during punching, and FIG. 11(c) is an explanatory diagram during punching. FIG. FIG. 12 is a schematic diagram of the front of the die cutter 100, and FIG. 12(a) shows the die cutter 100 cutting the sheet material S. 12(b) is an explanatory diagram of the sheet material S being conveyed toward the punching area. 1 is an explanatory diagram of the state in which the movable base 1 is raised after being stopped at .

[0021] The lower conveyor belt 14 includes a lower drive roller 140, a plurality of lower tension rollers 141, and a lower tension roller. The upper conveyor belt 15 is stretched around an upper drive roller 142. The sheet is stretched over a stretching roller 151 and an upper tension roller 152 .

[0022] When the conveyance drive motor 13 is driven, the drive output gear 35 rotates, and the conveyance drive motor 13 drives the conveyance drive gear 35. When the belt drive gear 37 rotates, it rotates on the common rotation axis. The fixed upper drive roller 150 and the drive transmission gear 150a rotate. The rotation of the drive transmission gear 150a rotates the upper conveyor belt 15. The lower belt drive input gear 140a that meshes with this rotates, and the lower belt drive input gear 140a is fixed to the same rotation shaft as the lower belt drive input gear 140a. The lower drive roller 140 rotates, and the lower conveyor belt 14 rotates.

[0023] The lower tension roller 142 and the upper tension roller 152 are fixed to the rear frame 6. 9. The tension roller holding frame 40 is positioned upstream in the conveying direction (to the right in FIG. 9). The lower conveyor belt 14 and the upper conveyor belt 15 are biased by the force of the tension.

[0024] A plurality of lower tension rollers 141 and a plurality of upper tension rollers 151 are arranged to support the upper tension rollers of the lower conveyor belt 14. The sheet material S is sandwiched between the upper conveyor belt 15 and the lower tension surface of the upper conveyor belt 15 so as to be horizontal. The lower conveyor belt 14 and the upper conveyor belt 15 are defined by the surface that sandwiches the sheet material S. The lower tension roller 141 and the upper tension roller 151 are roller holding members that can move up and down. The movable surface plate 1 is supported by a movable plate 33. The movable surface plate 1 has a protrusion protruding toward the rear in the width direction. It has an outlet 29.

[0025] During the punching process, the sheet material S is conveyed by the conveyor belts (14 and 15) to the moving surface plate 1. and the fixed surface plate 2, the lower conveyor belt 14 and the upper conveyor belt 15 are stopped, and the transfer Move the moving surface plate 1 upward. When the movable surface plate 1 rises, the protrusion 29 moves upward as shown in FIG. 10(b) and FIG. 11(b). The movable plate 33 comes into contact with the lower surface of the lower bent portion 331 of the movable plate 33. The protrusion 29 pushes up the movable plate 33, and the lower tension rod held by the movable plate 33 As a result, the upper tension roller 141 and the upper tension roller 151 are raised. The part of the sheet material S sandwiched between the sheet surface and the lower tension surface of the upper conveyor belt 15 moves upward together with the movable surface plate 1. Rise (rise by the distance "dH" shown by the dashed line in Fig. 9(b)). Fig. 9(b), Fig. 10(c), Fig. 11(c) and 12(b). As a result, the sheet material S to be processed can be raised toward the fixed surface plate 2.

[0026] During the punching process, the movable surface plate 1 rises, and the sheet material S is pressed by the movable surface plate 1. The tip of the cutting blade 81 of the die 8 on the fixed surface plate 2 side and the surface of the movable surface plate 1 (face plate 9) The sheet material S is sandwiched between the movable surface plate 1 and the cutting blade 8 of the die 8. The sheet material S is punched into the shape of 81 by being sandwiched between the movable surface plate 1 and the cutting blade 81. The relative position of the part that has been punched with respect to the movable surface plate 1 is fixed. When the surface plate 1 is further raised, the sheet material S is sandwiched between the moving surface plate 1 and the cutting blade 81. At this time, the sheet material S is held by the pair of conveyor belts (14, 15). If the part to be cut is not displaced, the sheet material will be sandwiched between the movable surface plate 1 and the cutting blade 81. The distance between the part and the part held by the pair of conveyor belts (14, 15) is separated in the vertical direction, A pulling force may be applied to the sheet material S, which may result in damage to the sheet material S.

[0027] In contrast to this, in this embodiment, the upper tension surface of the lower conveyor belt 14 and the lower tension surface of the upper conveyor belt 15 The upper support surface rises in conjunction with the rise of the movable surface plate 1. (fixed surface plate 2) and the sheet material S are sandwiched between the pair of conveyor belts (14, 15) and the sheet material S. the position where the belt is held (the upper tension surface of the lower conveyor belt 14 and the lower tension surface of the upper conveyor belt 15) This prevents the distance from increasing in the vertical direction. This can prevent the application of pulling force, and prevent damage to the sheet material S. In addition, the sheet material S pushed up by the movable surface plate 1 before contacting the cutting blade 81 is The sheet material S is pulled by the fixed holding means, and the range of the sheet material S facing the moving surface plate 1 is small. This can prevent the portion of the sheet material S from being punched from being misaligned. This allows for accurate punching and improves the quality of the finished product. .

[0028] When the lower tension roller 141 rises and a part of the upper tension surface of the lower conveyor belt 14 rises, The upper tension surface, which was previously linear, becomes inclined at both ends in the conveying direction, and the lower tension surface that forms the upper tension surface At this time, the path of the feed belt 14 becomes longer. 40 side, the tension of the lower conveyor belt 14 can be prevented from increasing. When the roller 151 rises and a part of the lower tension surface of the upper conveyor belt 15 rises, the linear The upper conveyor belt that forms the lower tension surface is inclined at both ends in the conveying direction. At this time, the upper tension roller 152 is positioned on the side of the upper drive roller 150. By moving the conveyor belt 15 to the position shown in FIG.

[0029] The downstream portion of the lower tension surface of the upper conveyor belt 15 in the conveying direction (located at the most downstream side of the plurality of When the upper tension roller 151 and the upper drive roller 150 are tilted, The portion where the upper tension roller 151 contacts the inner circumferential surface of the upper conveyor belt 15 is the upper tension roller 151 and the lower tension roller 141, it is difficult to move. The portion of the circumferential surface that is in contact with the upper driving roller 150 is pulled toward the upstream side in the conveying direction. As a result, a torque acts on the upper drive roller 150 in the counterclockwise direction in FIG. Torque acts on the drive output gear 35 via the moving gear 37 and the drive output belt 36, causing the drive output gear 35 to stop. This may cause a torque to act on the transport drive motor 13. If a servo motor is used as the motor 13, the rotation of the pair of conveyor belts can be controlled with high precision. However, if torque acts on the transport drive motor 13, which is controlled to stop, an error may occur. This may cause problems such as a load being applied to the operation and transport drive motor 13. In order to prevent such a problem, when a part of the lower tension surface of the upper conveyor belt 15 rises, i.e., That is, when the movable base 1 is raised, the supply of power to the transport drive motor 13 is stopped. As a result, the conveyance drive motor 13 that is controlled to stop may be controlled to stop. Therefore, it is possible to prevent torque from acting on the shaft.

[0030] As shown in FIG. 10, the lower tension roller shaft 141a, which is the rotation shaft of the lower tension roller 141, is The position is fixed relative to the movable plate 33. The upper tension roller 151 is a rotation axis of the upper tension roller 151. The tension roller shaft 151a is movable in the vertical direction relative to the movable plate 33. Furthermore, the upper tension roller shaft 151a is pulled by the tension force of the tension roller biasing spring 38. The upper tension roller 151 is biased toward the roller shaft 141a. The conveyor belt 15 and the lower conveyor belt 14 are sandwiched between the conveyor belt 15 and the lower tension roller 141 .

[0031] As shown in FIGS. 8 and 10, the fixing plate 34 has an upper protruding plate 34a protruding toward the front. and a lower protruding plate 34b, which connects the upper protruding plate 34a and the lower protruding plate 34b and extends in the vertical direction. The tension belt slide shaft 34d is provided. The movable plate 33 protrudes to the rear side and is positioned between the upper protruding plate 34a and the lower protruding plate 34b. The slide member 33a is provided with a tension belt slide shaft 34d. The slide member 33a moves up and down along the tension belt slide shaft 34d. By doing so, the movable plate 33 moves in the up and down direction. A movable plate positioning spring 34c is provided between the lower surface of the projecting plate 34a and the slide member 3 3a is pressed downward.

[0032] Before the movable surface plate 1 is raised, the protrusion 29 does not push up the movable plate 33. In this state, the slide member 33a pushed down by the movable plate positioning spring 34c is pushed downward. This abuts against the upper surface of the protruding plate 34b. The movable plate 33 can be positioned relative to the fixed plate 34, and the movable plate 33 is held by the fixed plate 34. The upper tension roller 151 and the lower tension roller 141 can be positioned in the vertical direction. When the board 1 rises and the protrusion 29 pushes up the movable plate 33, as shown in FIG. 10(c), Then, the slide member 33a rises, and the movable plate positioning spring 34c is compressed. In this state, the movable plate 33, which is biased by the movable plate positioning spring 34c, is pushed forward. The movable plate 33 is positioned so that the upper tension roller 1 51 and the lower tension roller 141 can be positioned in the vertical direction.

[0033] The sheet material S sandwiched between the pair of conveyor belts (14, 15) can be moved vertically as follows: The conveyor belt includes a conveyor drive mechanism (conveyor drive motor 13, conveyor drive transmission mechanism 16). (14, 15) may be held by a holding unit that can move up and down. The protrusion 29 of the movable surface plate 1 pushes the holding unit that holds the pair of conveyor belts including the conveyor drive mechanism. The structure is as follows.

[0034] FIG. 13 is a block diagram of the die cutter 100. The die cutter 100, which is a punching device, moves a movable platen 1 up and down toward a fixed platen 2. A control unit 30 is a control means for controlling the moving mechanism (press motor 3 and lifting transmission mechanism 4). The moving mechanism moves the movable surface plate 1 closer to the fixed surface plate 2, thereby moving the movable surface plate 1 and the fixed surface plate 2 closer to each other. The die 8 is attached to at least one of the fixed surface plate 2 and the fixed surface plate 2 (in this embodiment, the fixed surface plate 2). Thus, the sheet material S, which is the workpiece, is punched into a predetermined shape. The control unit 30 of the die cutter 100 receives the output from the operation panel 101 and the entrance sensor 25. Based on this, the driving of the four press motors 3 (3a to 3d) and the conveyance driving motor 13 is controlled. In the die cutter 100 of this embodiment, the control unit 30 controls the four press motors 3 (3a -3d) can be driven and controlled independently.

[0035] Next, the preparation work for the punching process will be described. In the sheet feeder 200, a stack of sheet materials S to be punched is placed on a shelf.

[0036] In the die cutter 100, the cutting die 8 is set on the fixed surface plate 2, and the face plate 9 is set on the movable surface plate 1. When setting the cutting die 8 and the face plate 9, The discharge unit located closest to the die cutter 100 can be manually or electrically This allows the sheet material S to pass between the fixed surface plate 2 and the movable surface plate 1. The exit side of the space is opened, allowing access from outside.

[0037] Below the fixed surface plate 2, a cutting die 8 can be slid in the direction along the conveying direction. The cutting die 8 is inserted into the space below the fixed surface plate 2 from the downstream side of the conveying direction of the device body. By inserting the die 8 between the die slide guides, the die 8 slides toward the upstream side in the conveying direction along the die slide guide. Insert the die 8 until the tip of the die 8 in the insertion direction hits the die abutment plate 19. 2, the mold fixing member 18 is pulled down to the state shown in FIG. 8 is abutted against the die abutment plate 19, and the cutting die 8 is abutted against the lower surface of the fixed surface plate 2. This causes the cutting die 8 to be fixed to the fixed surface plate 2.

[0038] An identifier such as a barcode is attached to the die 8 to retrieve information about the die 8. In this case, the cutter 8 is fixed after reading the identifier with a reading means such as a handy scanner. Set it on surface plate 2.

[0039] After setting the die 8 and the face plate 9, the discharge unit is moved to the designated position manually or electrically. To raise.

[0040] Next, job settings are made using the operation panel 101 or an external input device. , the size of the sheet material S, the height of the cutting blade 81 of the cutting die 8, the thickness of the sheet of the cutting die 8, the number of punches, Examples of such reference positions include a die reference position and a sheet reference position. Here, the thickness of the sheet of the die 8 is the thickness of the stainless steel plate 82 fixed to the upper surface of the die 8, An image sheet showing the arrangement of the cutting blades 81 of the cutting die 8 is fixed to the upper surface of the stainless steel plate 82. This is the total thickness of the image sheet and the protective sheet covering the top surface of the image sheet. The die 8 has a stainless steel plate 82 on its top surface, and a shim tape attached as needed. The sheet and the protective sheet are stacked in this order and inserted into and removed from the die cutter 100.

[0041] The stainless steel plate 82 is pressed up against the face plate 9 by the cutting blade 81 of the die 8, and the back surface ( The image sheet is attached to the cutting edge 81 of the die 8. The position of the cutting blade 81 can be checked, and when the position where the punching pressure is insufficient is found from the position of the cutting blade 81, A shim tape can be attached to the top of the image sheet to remove any unevenness. The 8-inch die is used to cover and protect the top surface of the image sheet with shim tape to remove unevenness. When sliding the platen to set it, the shim tape for smoothing the unevenness will come into contact with the bottom surface of the fixed platen 2. It can prevent peeling due to rubbing.

[0042] The above-mentioned die reference position and sheet reference position are determined so that the stop position of the sheet material S during the punching process is A stop position where the position to be cut on the sheet material S and the position of the cutting blade 81 of the cutting die 8 coincide with each other. This is the reference value entered in the job settings to ensure that The sheet material S is detected by an inlet sensor 25 disposed upstream of the pair of conveyor belts (14, 15). After detecting the rear end of the sheet material S, it stops when it receives a predetermined number of stop pulses. Punching occurs at the stop position. In the job setting, the worker extracts an arbitrary blade reference point of the cutting blade 81 of the cutting die 8. Then, the cutting die reference position, which is the distance from the blade reference point to the upstream end of the cutting die 8, is input. In addition, the operator determines the cutting position on the sheet material S to be punched out based on the blade reference. The cutting reference point corresponding to the point is extracted, and the cutting reference point of the sheet material S to be punched is calculated from the cutting reference point. Enter the sheet reference position, which is the distance to the upstream edge. The control unit 30 determines the blade reference point and the target position based on the input cutting die reference position and sheet reference position. The number of stop pulses is set so that the sheet material S stops at the stop position where the cutting reference point coincides with the stop pulse number. By this process, the cutting blade 81 of the punching die 8 and the sheet It is possible to match the position on the material S to be cut.

[0043] The job to be executed by the die cutter 100 includes a creasing process for creasing the sheet material S. In this case, the work of fixing the concave member facing the creasing to the face plate 9 is performed. Apply double-sided tape to the underside of the recessed part, and align the recessed part facing the creasing convex part provided on the cutting die 8. Attach the material and clip. In this state, when the creasing recess transfer button is operated, the transfer The surface plate 1 moves by a distance less than that of the punching process, and the face plate 9 comes into contact with the underside of the opposing recessed member. The opposing recessed member is attached to the face plate 9 with double-sided tape. Since the clip remains, remove the face plate 9 from the moving surface plate 1 and remove the unnecessary clip. Then, the face plate 9 is fixed to the movable surface plate 1.

[0044] In the die cutter 100, after the various settings described above, the sheet material S is continuously conveyed. Before the mass production process in which punching is performed continuously, adjustment processing is performed to ensure appropriate punching.

[0045] In the adjustment process, only one sheet material S is fed to perform a test feeding for punching. In the case of feeding, punching processing is performed by the die cutter 100, but separation processing by the separator is not performed. The product of the die-cutting process is not separated from the excess part, and the product is discharged to the stacker. Put out. The operator presses the test feeding button on the operation panel 101 to perform test feeding. The operator checks the results of the test feed and adjusts each part. If necessary, test feed and adjustment operations are carried out. Repeat the process.

[0046] The adjustment operation is performed on the operation panel 101, but may also be performed using an external input device. The adjustment targets are the position of the sheet material S in the width direction and the inclination of the sheet material S relative to the conveying direction (slip). The position in the conveying direction of the sheet material S when it is stopped during punching is also included. The die cutter 100 of the embodiment also operates to adjust and correct uneven cutting, as will be described in detail later. This can be done by operating the panel 101. The operator feeds the sheet material S obtained by the test feeding. Visually inspect the work and make adjustments based on any deviations or unevenness in the cutting.

[0047] After the adjustment process, the operator inputs the number of sheets to be processed and the processing speed on the operation panel 101 and presses the start button. Pressing the button will start the mass production process. The mass production process will start when the input number of sheets has been processed. The process stops when an error is detected or when the operator operates the stop button. The start button and stop button can be operated not only on the operation panel 101 but also on the sheet feeder. It may also be provided on the operation unit of the -200 so that it can be operated from either.

[0048] Next, the operation of the die cutter 100 for punching will be described. When the start button on the operation panel 101 is pressed, a sheet is fed from the sheet feeder 200. The material S is fed, and the inclination and widthwise position of the sheet material S are corrected by the registration device 300. A sheet material S is supplied to the die cutter 100. In the die cutter 100, a conveyance drive motor 1 3 is driven, and the lower conveyor belt 14 and the upper conveyor belt 15 of the conveyor belt pair start endless movement. Then, the sheet material S supplied from the registration device 300 is sandwiched between the pair of conveyor belts and conveyed. The trailing edge of the sheet S is detected by an entrance sensor 25 disposed on the upstream side of the pair of conveyor belts. After a predetermined time has elapsed since the start of the conveyance, the conveyance drive motor 13 is stopped. The pair of sheets S is sandwiched between the movable surface plate 1 and the fixed surface plate 2 and punched at a predetermined position within the punching area. Stop at the punching position.

[0049] Next, the four press motors 3 are driven to raise the movable surface plate 1. Then, the protrusion 29 of the movable surface plate 1 pushes up the roller holding member, and the roller is moved to the conveying height. The sheet material S also rises. The four press motors 3 are driven forward by a predetermined rotation amount. By stopping, the movable surface plate 1 reaches the upper stop position, and the sheet material S is cut by the cutting blade 81 of the cutting die 8. It is punched into the shape of

[0050] Next, the four press motors 3 are driven in the reverse direction by a predetermined rotation amount and then stopped, thereby The platen 1 descends and reaches the lower stop position. At this time, the roller holding member also descends along with the moving platen 1. Then, the sheet material S is lowered to the conveying height. After this, the conveying drive motor 13 is driven again. By opening the die-cutting device, the die-cut sheet material S is transported to the discharge processing device 400. The succeeding sheet material S supplied from the registration device 300 is sandwiched between the pair of conveyor belts and conveyed to the punching position. Transport by. These operations are repeated during mass production processing.

[0051] In the above description, after the conveyance drive motor 13 is stopped, the press motor 3 is driven in the forward direction, and the press After the reverse rotation of the conveyance motor 3 is stopped, the drive of the conveyance drive motor 13 is restarted. The timing of driving the motor is not limited to this. The press motor 3 may be driven in the forward direction before the transfer drive motor 13 is stopped, as long as this does not cause any problems. Alternatively, the drive of the conveying drive motor 13 may be restarted before the reverse drive of the press motor 3 is stopped. A period in which the driving period of the conveyor drive motor 13 and the driving period of the press motor 3 overlap is provided. This makes it possible to improve the processing speed.

[0052] Next, the operation of the press motor 3 during the punching operation will be described. When the transport drive motor 13 is driven, the lift transmission mechanism 4 is set to wait at the lower stop position. The control unit 30 determines whether the rotation position of the press motor 3, which is a servo motor, corresponds to the lower stop position. The rotation position is controlled so as to be the lower reference rotation position.

[0053] The entrance sensor 25 detects the passage of the rear end of the sheet material S, and then the conveyor is opened after a predetermined time has elapsed. The feed drive motor 13 is stopped, and the press motor 3 starts rotating in the forward direction. Press motor 3 is rotated forward to the upper reference rotation position and stopped so that 4 is at the upper stop position. do. When the rotation positions of all four press motors 3 reach the upper reference rotation position and the forward rotation stops, , wait for a predetermined time (20 msec), and then start reverse rotation. The press motor 3 rotates in the reverse direction to the lower reference rotation position and then stops. In this way, the four press motors 3 rotate from the lower reference rotation position to the upper reference rotation position. By repeating forward rotation and reverse rotation from the upper reference rotation position to the lower reference rotation position, Then, punching process is performed.

[0054] FIG. 14 is a schematic explanatory diagram of one of the four lift transmission mechanisms 4. FIG. 14(a) shows 14(b) is an explanatory diagram of the XZ plane, FIG. 14(b) is an explanatory diagram of the YZ plane, and FIG. 14(c) is a perspective view. be. As shown in FIG. 14, the lift transmission mechanism 4 includes a rotation input gear 4 engaged with a rotation output gear 31. 1, an eccentric shaft 44 which rotates together with the rotation input gear 41, and a shaft fixed to the base frame 7. a shaft holding portion 42 that rotatably holds a rotation shaft portion 441 of the eccentric shaft 44; Furthermore, the lower part of the lift transmission mechanism 4 engages with the eccentric shaft part 442 of the eccentric shaft 44, The upper part of the lifting transmission rod 43 engages with the cylindrical part 10 of the movable surface plate 1 .

[0055] FIG. 15 shows a state in which the eccentric shaft 44 is rotated so that the cylindrical portion 10 moves from the bottom dead center to the top dead center. Displacement of the lift transmission rod 43 and the cylindrical part 10 when rotated around the center line of the rotation shaft part 441 15(a) is an explanatory diagram showing a state in which the columnar portion 10 is positioned at the bottom dead center. 15(b) is an explanatory diagram of a state in which the cylindrical portion 10 is positioned midway between the bottom dead center and the top dead center, and FIG. 15( FIG. 1c) is an explanatory diagram of a state in which the columnar portion 10 is positioned at the top dead center.

[0056] The eccentric shaft 44 has a rotation shaft portion 441 that engages with the shaft holding portion 42 and a lift transmission lock. The rotation input gear 4 is a member whose center line is positioned differently from the eccentric shaft portion 442 that engages with the drive shaft 43. 1, the position of the center line coincides with the rotation shaft portion 441.

[0057] When the press motor 3 is driven to rotate and the rotation output gear 31 rotates, the rotation input gear 41 rotates. The eccentric shaft 44 to which the rotation input gear 41 is fixed rotates around the center line of the rotation shaft portion 441. As a result, the eccentric shaft portion 442 rotates around the central axis of the rotating shaft portion 441, The lift transmission rod 43 engages with the eccentric shaft portion 442, and the cylindrical portion engages with the lift transmission rod 43. At this time, the movable surface plate 1 having the cylindrical portion 10 moves in the direction of the upstream guide portion 22 and the The downstream guide portion 24 prevents the movement in the width direction (the left-right direction in FIG. 15, the direction parallel to the Y axis). Therefore, the rotation of the eccentric shaft 44 is restricted, and the cylindrical portion 10 does not move in the width direction. When the eccentric shaft portion 442 is displaced in the vertical and width directions by the While the lift transmission rod 43 tilts, the columnar portion 10 moves only in the up and down direction.

[0058] The eccentric shaft 44 of this embodiment has a central axis of the rotating shaft portion 441 and a central axis of the eccentric shaft portion 442. The eccentricity between the shaft and the shaft is 15 mm. Displacement of the cylindrical portion 10 when the eccentric shaft 44 is rotated to the top dead center state shown in FIG. 5(c) The vertical movement range H is 30 mm.

[0059] The moving mechanism for moving the movable surface plate 1 has four cylindrical portions 10 as a plurality of pressure portions. Four lift transmission mechanisms 4 (4a to 4d) as multiple pressure mechanisms that independently pressurize the Four press motors 3 (3a to 3d) as a plurality of drive sources for driving these, respectively. and The control unit 30 can independently control the driving of each of the four press motors 3. Therefore, the upper reference rotation position corresponding to the upper stop position can be changed for each press motor 3. This allows the height of the columnar portion 10 to be individually changed when it is at the upper stop position. .

[0060] In the die cutter 100 of this embodiment, the eccentric shaft 44 is controlled to rotate once. The cylindrical portion 10 is positioned between the bottom dead center and the top dead center, and the lower stop position and the upper stop position are positioned between the bottom dead center and the top dead center. It controls the movement between the stop position and the normal position. Regarding the rotation angle θ of the eccentric shaft 44, when the cylindrical portion 10 is at the bottom dead center, θ=0[°]. Then, when the cylindrical portion 10 is at the top dead center, θ=180[°]. The rotation angle of the eccentric shaft 44 when the cylindrical portion 10 is at the upper stop position is θ1. If the rotation angle is θ2, the relationship in equation (1) below holds. 0[°]≦θ1<θ2<180[°] (1)

[0061] In this way, by making the rotation angle of the upper stop position smaller than the rotation angle of the top dead center, , the rotation angle "θ2" when the columnar part 10 is at the upper stop position can be changed. This makes it possible to adjust the position of the columnar portion 10 when placing the device. When applying pressure, the columnar part 10, which is the home position of the lift transmission mechanism 4, is at the lower stop position. The four press motors 3 in the state of the lower reference rotation position corresponding to the state in which they are positioned are rotated forward at the same speed. Then, the lift transmission mechanism 4 is rotated to the upper reference rotation position corresponding to the upper stop position. The four press motors 3 are stopped in order starting from the one that was stopped. If the rotation amount from the lower reference rotation position to the upper reference rotation position is large, press motor 3 The stop timing of the press motor 3 is later than that of the other press motors 3. In response to this, the rotation amount from the lower reference rotation position to the upper reference position is calculated, and the rotation amount The rotation speed of the press motor 3 with a larger value is increased, and the lower base The drive time from the semi-rotation position to the upper reference rotation position is the same, or The difference between the two may be controlled to be small.

[0062] When the upper reference rotation positions of the press motors 3 are different from each other, The lower reference rotation position may be set so that the rotation amount is the same. Even if the upper reference positions of the three are different, the drive from the lower reference rotation position to the upper reference rotation position is The time and rotation speed can be set to the same value. There is no need to lengthen the drive time or slow down the rotation speed, and the time required for punching operation is shortened. The lower reference rotation position may be automatically calculated by the control unit 30. , may be input by the user.

[0063] As described above, the die cutter 100 of this embodiment has an upper reference corresponding to the upper stop position. The rotation position can be changed for each press motor 3, and the position of the columnar part 10 at the upper stop position The height can be changed individually. With this configuration, the rotation amount of one press motor 3 at the upper reference rotation position is increased. By making a change to reduce the rotation angle "θ2" of the eccentric shaft 44 at the upper reference rotation position, The value of θ becomes larger, and the position of the columnar part 10 at the upper stop position becomes higher. The face plate 10 is positioned vertically above the cylindrical portion 10 when the portion is stopped at a high position. The punching pressure, which is the contact pressure between the die 9 and the punching die 8, can be increased.

[0064] In this way, in the configuration in which the contact pressure between the face plate 9 and the punching die 8 during the punching process can be partially increased, During test feeding, the upper stop position of the cylindrical part 10 below the part where uneven punching occurred is set higher. As shown above, by increasing the rotation amount of the upper reference rotation position of the press motor 3, punching irregularities are eliminated. This makes it possible to make corrections.

[0065] In other words, with conventional die cutters, unevenness is corrected by attaching shim tape to the back of the die. The punching pressure can be adjusted by changing the rotation amount of the upper reference rotation position of the press motor 3. This becomes: For example, if uneven cutting occurs on the upstream side of the sheet material S output in the test feeding, The rotation amount of the upper reference rotation position of the press motor 3a is set to be large. The value of the rotation angle "θ2" of the eccentric shaft 44 of the lift transmission mechanism 4a increases, and the upper stop position The position of the first cylindrical portion 10a at the time of setting can be made higher than before setting. It is possible to increase the punching pressure on the upstream side of the sheet material S during processing, thereby eliminating punching unevenness. It is possible.

[0066] Next, the sheet material S is conveyed by a pair of conveying belts consisting of the lower conveying belt 14 and the upper conveying belt 15. The transportation of the above will be described. As with the die cutter 100, a flat die is used to move the sheet material or die up and down. In a punching device called a flat-plate punching device, a sheet conveying member is provided in the area facing the punching die. Cannot be placed. For this reason, in the conventional flat-plate punching device, the sheet material is conveyed along both sides of the conveying path. The sheet is gripped by a gripper fixed to a gripper bar that is hung on two circulating chains. A common configuration is to grip the leading edge of the material and pull it to transport the sheet material.

[0067] On the other hand, as shown in FIGS. 3, 4 and 8, the die cutter 100 is positioned below the cutting die 8 and faces the cutting die 8. The conveyor belt pair (14, 15) is disposed on the inner side in the width direction, outside the range where the conveyor belt is to be conveyed. Then, one end of the sheet material S in the width direction is sandwiched between the pair of conveyor belts (14, 15), The sheet material S is conveyed so as to pass through the area facing the cutting die 8 in the die cutter 100. do.

[0068] The die cutter 100 also cuts the sheet material that is being nipped and conveyed between the pair of conveyor belts (14, 15). The sheet material S is provided with an air discharge mechanism (not shown) that blows air onto the sheet material S. In the configuration where only the edge is clamped, the front side of the sheet material S hangs down, and the conveyed sheet material S In response to this, the air discharge mechanism blows air to Then, lift the front side of the sheet material S and make the sheet material S horizontal. The posture of the material S can be stabilized. The sheet material S is conveyed by a pair of belts, and a pair of conveying belts is arranged on both sides in the width direction. However, in this configuration, The sheet material S to be cut is conveyed to both ends in the width direction by a pair of conveyor belts located on both sides of the cutting die 8 in the width direction. In contrast, the die cutter of this embodiment is limited to a wide sheet material S that can be clamped. As shown in 100, only one end of the sheet material S in the width direction is sandwiched between a pair of conveyor belts (14, 15). If the structure is such that the sheet material S is held in this state, it is possible to transport a narrow sheet material S and perform a punching process on it.

[0069] Unlike the above-mentioned method using a circulating chain, the die cutter 100 uses a conveying member. The pair of conveyor belts (14, 15) are separate from the conveyor members of the upstream device (registration device 300). Therefore, the sheet material is transferred from the conveying member of the upstream device, and the sheet material is received. There is a risk of misalignment during transfer or due to differences in conveyance speed. A pair of conveyor belts (14, 15) forming a complete conveyor device within the mill 100 conveys the material during the punching process. It is necessary to improve the accuracy of the stopping position of the sheet material S. However, as with the conveying member, It is not possible to place a sensor for detecting the passage of the sheet material S in the range of the direction of the sheet material S. The detection result of the entrance sensor 25 disposed near the upstream end of the conveyor belt pair (14, 15) Based on the results, the timing of stopping the conveyor drive motor 13 that drives the conveyor belt pair (14, 15) is determined. Determine the tag.

[0070] As shown in FIG. 2, the die cutter 100 is provided on the upstream side and the downstream side of the front frame 5 in the conveying direction. 3 and 4, a first strain sensor 26a and a second strain sensor 26b are provided. As shown in FIG. 1, the third strain sensor 26c and the fourth strain sensor 26d are provided on the upstream side and downstream side of the rear frame 6 in the conveying direction. 26d. The four strain sensors 26 (26a, 26b, 26c, 26d) detect the deformation of the die cutter 100. The upper part of the frame is a front frame 5 and a rear frame 6 which are holding members for holding the fixed surface plate 2. This is an elongation amount measuring means for measuring the amount of downward elongation. The measurement points are the front frame 5 and the rear frame 6, which are the frames on both sides of the conveyance path of the sheet material S. Each of the frames 6 has a plurality of locations (two locations in this embodiment) spaced apart in the conveying direction.

[0071] The four strain sensors 26 are fixed near the upper end of the front frame 5 or the rear frame 6. Strain detection rods 27 (27a, 27b, 27c, 27d) are arranged below the strain sensors 26. The lower ends of the four strain detection rods 27 are placed under the front frame 5 or the rear frame 6. The detection rod is fixed to the fixing portion 28 (28a, 28b, 28c, 28d) near the end. Only the lower end of the detection rod 27 is fixed to the front frame 5 or the rear frame 6. The position of the upper end is not affected by the deformation of the front frame 5 or the rear frame 6. The sensor 26 is disposed at the upper end of the front frame 5 or the rear frame 6. When the frame 5 or the rear frame 6 is extended, it moves upward and reaches the upper surface of the opposing strain detection rod 27. When the distance increases and the extension is eliminated, the distance from the strain sensor 26 to the top surface of the strain detection rod 27 also returns to the original value. Therefore, the strain sensor 26 detects a change in the distance to the upper surface of the strain detection rod 27 disposed opposite to it. By measuring, the amount of extension of the front frame 5 and the rear frame 6 at the placement position can be detected. It is possible.

[0072] The four strain sensors 26 measure the extension of the front frame 5 and the rear frame 6 at the installation positions. The control unit 30 detects the amount of strain as an electrical signal based on the measurement result of the strain sensor 26. The drive of the four press motors 3 can be controlled individually.

[0073] In the die cutter 100 of this embodiment, in the punching process for mass production, the movable surface plate 1 is The stop position is a vertical stop position, and the stop position is a vertical stop position. The cutting die 8 controls the movement so that it does not stop during the descent. The moving surface plate 1 stops when the punched sheet material S has descended to the conveying height. As shown in the figure, the reverse rotation of the four press motors 3 is stopped, and the drive of the conveyance drive motor 13 is resumed. A second punching control may be selected. In this second punching control, the punching process is performed. After the rear end of the sheet material S passes above the movable surface plate 1, the four press motors 3 are rotated in reverse. The rolling drive is resumed, and the moving platen 1 is lowered to the lower stop position and stopped, preparing for the next punching operation. do.

[0074] In the normal punching process of the die cutter 100, the product portion of the sheet material S after the punching process and The excess part is not completely separated. This is because the pair of conveyor belts (14, 15) If the part held by such a holder is a surplus part, the product may fall inside the device and the product may not be If the fruit part is held, there is a risk that the excess part will fall off the device. For this reason, the cutting blade 81 of the cutting die 8 forms a narrow "nick" that connects the finished product with the excess part. The shape is such that a connecting wire called a "connector" is left behind. The excess is then pushed off with a separator. By doing this, the nick is cut and the finished product is obtained. Even if the product and the excess part are completely separated by the punching process, the upper surface of the movable surface plate 1 (the upper surface of the face plate 9) ) supports the bottom surface of the sheet material S, so that the excess part or the retaining part of the product is held in place. It prevents the uncut part from falling into the device, and separates the product from the excess part even if there is no nick. The sheet material S after being discharged can be discharged to the outside of the die cutter 100. This eliminates the need to cut the nicks, preventing nicks from remaining on the finished product, and improving the quality of the finished product. Improvements can be made.

[0075] Sheet materials S, which are plate-shaped workpieces, include ordinary paper, cardboard, label paper, thick paper, and In addition, the punching device according to the present invention can be used to process paper media such as cardboard. Plate-shaped workpieces include paper media, OHP sheets, films, fabrics, and resin sheets. , metal sheets, metal foils, plated electronic circuit board materials, special films, plastics This includes plastic films, prepregs, and sheets for electronic circuit boards, and can also be used in bundles of multiple sheets. A single sheet is fine.

[0076] The configuration in which the movable surface plate is disposed below and the fixed surface plate is disposed above has been described. Alternatively, a platen may be placed above the fixed platen and a fixed platen may be placed below the fixed platen. Both plates are movable up and down as movable bases, and are driven by multiple (four) lifting drive sources. The contact and separation may be performed by using the contact and separation mechanism. In a configuration in which the movable surface plate is disposed below and the fixed surface plate is disposed above, as in this embodiment, Four press motors 3, each having a certain weight, and four lifting transmission mechanisms 4 are mounted at a low position of the device. This allows the center of gravity of the die cutter 100 to be lowered.

[0077] The above description is merely an example, and each of the following aspects provides unique effects.

[0078] [Aspect 1] A movable surface plate such as a movable surface plate 1 and an opposing surface plate such as a fixed surface plate 2 arranged opposite each other in the vertical direction, The movement of the press motor 3 and the lift transmission mechanism 4 that move the movable surface plate toward the opposing surface plate The workpiece S is carried to the punching area sandwiched between the mechanism, the moving surface plate and the opposing surface plate. A punching area conveying means such as a lower conveying belt 14 and an upper conveying belt 15 for conveying the material, and a punching area conveying means positioned in the punching area. and a holding means such as a lower conveyor belt 14 and an upper conveyor belt 15 for holding the workpiece. In a punching device such as a die cutter 100, as the movable surface plate moves toward the opposing surface plate, A holding means moving mechanism (projection 29 and It is characterized by having a movable plate 33). According to this, the holding means is moved toward the opposing surface plate during the punching process by the holding means moving mechanism. The holding means moves to the opposing surface plate in response to the movement of the movable surface plate, so that the movement relative to the holding means This can suppress changes in the position of the surface plate, and can prevent problems caused by these changes. Cut.

[0079] The die cutter 100, which is the punching device of this embodiment, has a lower conveyor belt 14, which is a holding means. The portion of the upper conveyor belt 15 that holds the sheet material S is connected to the vertical movement of the movable surface plate 1. The structure is such that the holding means moves in accordance with the movement of the movable surface plate. The structure is not limited to a structure in which the two are linked by a common drive source, but may be a structure in which the two are held by a separate drive source. The means may be configured to move toward the opposing surface plate in accordance with the movement of the movable surface plate. The die cutter 100, which is a punching device of this embodiment, has a movable surface plate 1 facing It is located below the fixed surface plate 2, which is a surface plate, and the movable surface plate 1 rises to perform the punching process. As the movable surface plate 1 rises, a part of the lower conveyor belt 14 and the upper conveyor belt 15 serving as the holding means moves upward. In the punching device to which the present invention is applied, the movable platen is positioned above the opposing platen. In this configuration, the movable surface plate is held in place as it descends during punching. The conveyor belt pair (14 and 15) moves the punching area conveyor and the holding hand downward. It is a structure that functions as a stage, but it also functions as a mechanism that functions as a punching area conveying means and a holding means. In addition, a configuration in which multiple grippers are arranged on an endless chain as described in Patent Document 1 is also possible. In this configuration, the movable surface plate moves toward the opposing surface plate during punching. This causes the distance between the gripper and the moving surface plate to change. This can suppress the following.

[0080] [Aspect 2] In the punching device of the first aspect, the holding means moving mechanism is a protrusion 2 that moves together with the moving surface plate. 9 and the like, and the pressed portion such as the lower bent portion 331 of the movable plate 33 which moves together with the holding means. a pressing portion, and when the movable surface plate moves toward the opposing surface plate, the pressing portion presses the pressed portion; The holding means is characterized in that it moves to the side of the opposing surface plate. This allows for a configuration in which the holding means moves to the opposing surface plate in conjunction with the moving surface plate. do.

[0081] Aspect 3 In the punching device of the second aspect, the pressing unit is The movable surface plate is not in contact with the pressed portion, and the pressed portion is pressed while the movable surface plate is moving toward the opposing surface plate. The device is characterized by contacting and pressing the According to this, during the punching process, the moving surface plate starts moving first, and then the holding means A moving configuration can be realized.

[0082] Aspect 4 In the punching device of any one of the first to third aspects, the punching area conveying means is a A belt conveyor device that conveys by sandwiching between two belt members such as a feed belt 14 and an upper conveyor belt 15. The two belt members are positioned outside the moving surface plate in the width direction and are positioned in the punching area. The part of the workpiece that is placed on the workpiece and that protrudes from the punching area is clamped and held. The holding means moving mechanism is a mechanism for moving the workpiece between the two belt members. (The upper tension surface of the lower conveyor belt 14 and the lower tension surface of the upper conveyor belt 15, etc.) are opposite to each other on the moving surface plate. It is characterized by a mechanism that moves to the side of the opposing surface plate in response to movement toward the facing surface plate. According to this, the workpiece is sandwiched between two belt members arranged so as to avoid the punching area. The workpiece is conveyed by the moving platen, and the workpiece is sandwiched between two belt members according to the movement of the moving platen. A configuration can be realized in which the part is moved to the side of the opposing surface plate. [Explanation of symbols]

[0083] 1: Moving surface plate 2: Fixed surface plate 3: Press motor 3a: First press motor 4: Lift transmission mechanism 4a: First lift transmission mechanism 5: Front frame 6: Rear frame 7: Mounting frame 8: Cutting die 9: Face plate 13: Transport drive motor 14: Lower conveyor belt 15: Upper conveyor belt 16: Transport drive transmission mechanism 25: Inlet sensor 29:Protruding part 32: Belt support mechanism 33: Movable plate 34: Fixed plate 100: Die cutter 500: Die-cut system

Claims

1. A movable surface plate and an opposing surface plate arranged opposite to each other; a moving mechanism that moves the movable surface plate toward the counter surface plate; a punching area transport means for transporting a workpiece to a punching position in a punching area sandwiched between the movable surface plate and the opposing surface plate, In a punching device, the moving mechanism performs a punching process in which a workpiece is punched into a predetermined shape by a punching die attached to at least one of the movable platen and the opposing platen by bringing the movable platen closer to the opposing platen, the movable surface plate is located below the opposing surface plate, In the punching process, the punching area transport means transports the workpiece to the punching position and stops the workpiece temporarily, and moves the movable surface plate from a lower stop position to an upper stop position, thereby punching out the workpiece sandwiched between the movable surface plate and the opposing surface plate into a shape corresponding to the punching die, and then stops the movable surface plate midway while descending from the upper stop position to the lower stop position, The punching device is characterized in that the conveyance of the workpiece by the punching area conveying means is resumed, and then the movable platen resumes descending toward the lower stop position.

2. In the punching device of claim 1, In the punching process, the movable surface plate moves from the lower stop position toward the upper stop position, whereby the movable surface plate pushes up the workpiece positioned at the punching position, and the movable surface plate and the fixed surface plate that have reached the upper stop position sandwich the workpiece and punch it, A punching device characterized in that, when the movable base plate is in the middle of descending from the upper stop position to the lower stop position and the workpiece pushed up by the movable base plate descends to a transport height at which it can be transported by the punching area transport means, the descent of the movable base plate is stopped and the transport of the workpiece by the punching area transport means is resumed.

3. In the punching device of claim 1 or 2, A punching device characterized in that after the descent of the movable base plate is stopped and the conveyance of the workpiece by the punching area conveying means is resumed, the movable base plate resumes its descent toward the lower stop position after the rear end of the workpiece in the conveying direction passes above the movable base plate.

4. In the punching device described in any one of claims 1 to 3, the punching area transport means is a belt transport device that sandwiches and transports a portion of the workpiece that protrudes from the punching area in a width direction perpendicular to the transport direction between two belt members, The punching device is characterized in that the punching area transport means transports the workpiece by pinching only one end portion in the width direction of the workpiece.

5. In the punching device according to any one of claims 1 to 4, a holding means for holding the workpiece that has been transported by the punching area transport means and is positioned at the punching position; A punching device comprising a holding means moving mechanism that moves the holding means upward in response to movement of the movable platen toward the upper stop position.

6. In the punching device of claim 5, The punching device is characterized in that the punching area transport means holds the workpiece as the holding means.

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