JP2012000623A - Mold device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem of complexity of a structure and an increase in cost due to the fact that an upper cushion insert and an upper mold must be replaced when the upper mold is replaced, and a lower cushion insert and a lower mold must be replaced when the lower mold is replaced in a conventional mold device.SOLUTION: The mold device comprises: an upper mold fixing device D attached to a rear surface of an upper master common member F and formed in a U-shape in a planar view with its open part formed on a working position side of a worker, including an upper mold fixing member 4 while guiding and allowing insertion of an upper mold B from the open part and a turning member 5 blocking the open part in a state of inserting the upper mold and bringing the upper mold into a fixed state; and a lower mold fixing device C attached to an upper surface of a lower master common member E, including a lower mold fixing member 1 while guiding and allowing insertion of a lower mold A, and a turning member 2 blocking an open part of the lower mold fixing member in a state of inserting the lower mold and bringing the lower mold into a fixed state.

Description

  The present invention is a die apparatus such as a total punching die, punching die, bending die or punching die, and is attached to an upper die which is an exchange die attached to an upper die set and a lower die set. The present invention relates to a mold apparatus capable of attaching the replacement mold to the die set in a short time and in an accurate positioning state without screwing a lower mold as a replacement mold.

  As a conventional mold apparatus, there is an invention described in JP 2008-246546 A (Patent Document 1). The structure is such that the lower die (punch packing plate 3, punch holder 4, stripper plate 5 etc.) assembled with screws to the upper die set 1 for each product to be punched is unscrewed. Replace with a new replacement mold and fix with screws. Further, the lower die fixed with screws to the lower die set 7 was also replaced in the same manner.

  Moreover, there exists invention described in Unexamined-Japanese-Patent No. 10-156597 (patent document 2). The structure is such that an upper cushion insert 26 is attached to a flat U-shaped punch holder 20 fixed to the ram 1 by screwing so that it can be inserted and removed from the front, while being fixed to the bed 3 by screwing. The lower cushion insert 33 is attached so that it can be inserted and removed from the front surface of the die holder 21.

  Further, the upper die 2 is attached to the punch holder 20 so as to be detachable at the lower side of the upper cushion insert 26 and fixed with a clamp 24 attached to the lower side of the punch holder 20, and the lower die is fixed to the die holder 21. 4 was attached to the upper side of the lower cushion insert 33 so as to be detachable and fixed by a clamp 24 attached to the upper side of the die holder 21.

JP 2008-246546 A JP-A-10-156597

  In the above-mentioned Patent Document 1, for each product to be processed, the upper mold and the lower mold are all unscrewed and disassembled, and then a different upper mold and lower mold are assembled and screwed. For this reason, it takes time to incorporate the upper and lower molds, and there is a problem that the processing cost increases when processing a small lot of products.

  On the other hand, in Patent Document 2, a punch holder 20 is fixed to a ram 1 that moves up and down, an upper cushion insert 26 is inserted into the punch holder 20, an upper die 2 is inserted, and a die holder 21 is attached to a pad 3. Since the lower cushion insert 30 is inserted into the die holder 20 and the lower mold 4 is inserted into the die holder 20, there is an advantage that the mold can be replaced more easily than the above-mentioned Patent Document 1.

  However, in Patent Document 2, the upper cushion insert and the upper mold must be replaced when the upper mold is replaced, and the lower cushion insert and the lower mold must be replaced when the lower mold is replaced. There was a problem that it was complicated and expensive.

  Furthermore, the clamp for fixing the upper die to the punch holder is attached to the lower surface of the punch holder, and the clamp for fixing the lower die to the punch holder is attached to the upper surface of the punch holder. To fix to each punch holder, the clamp is tightened, so the tightening work for fixing is troublesome, and it is necessary to attach it to the upper and lower punch holders separately. there were.

  The present invention is intended to solve the above-described problems, and its object is to attach only a lower mold and an upper mold to a punch holder fixed in advance to the ram side and the bed side. Can be removed and drilled at the same time, and the upper and lower molds can be fixed to the punch holder by closing the openable opening and closing member from the front and the punch holder side and the upper and lower molds. It is an object of the present invention to provide a mold apparatus capable of being fixed with high accuracy without causing play during processing due to engagement with a recess or protrusion formed on the side.

  The mold apparatus of the present invention is intended to achieve the above-mentioned object, and the means of claim 1 is an upper master common member that moves up and down by a press apparatus and is commonly used regardless of the product to be processed. An upper die that is attached to the back surface of the upper master common member and is formed in a U shape in plan view, and has an opening formed on the operator's working position side, and can be inserted while guiding the upper mold from the opening. An upper mold fixing device composed of a rotating member that closes the opening with the mold fixing member and the upper die inserted to fix the upper die, and is attached to the fixing side of the press device and processed. Regardless of the product to be used, the lower master common member used in common and the lower master common member attached to the upper surface of the lower master common member are formed in the same shape as the upper mold fixing member and can be inserted while guiding the lower mold. Mold fixing part And it is characterized in that more structure and lower mold fixing apparatus comprising a rotating member to a stationary state the lower mold closes the opening of the lower mold fixing member in a state of inserting the lower mold.

  According to a second aspect of the present invention, in the first aspect, the upper mold and the upper mold fixing member are trapezoidal between the back side of the upper mold and the back side of the upper mold fixing member. At least two engaging protrusions and the trapezoidal groove are engaged, and the trapezoidal protrusion and the trapezoidal groove are engaged between the front surface side of the upper mold and the rotating member. The upper mold is fixed to the upper mold fixing device in the state, and the lower mold and the lower mold fixing member are a back side of the lower mold and a back side of the lower mold fixing member. At least two trapezoidal engagement protrusions and a trapezoidal groove are engaged with each other, and the trapezoidal protrusion and the trapezoidal groove are engaged between the front surface side of the lower mold and the rotating member. In this engaged state, the lower mold is fixed to the lower mold fixing device.

  According to a third aspect of the present invention, in the above-described second aspect, in the engagement state between the trapezoidal engagement protrusion and the trapezoidal groove for fixing the upper mold to the upper mold fixing member, The shape of the engagement groove is such that the upper mold does not fall from the upper mold fixing member, and the trapezoidal engagement protrusion for fixing the lower mold to the lower mold fixing member In the engaged state with the trapezoidal groove, the shape of the engaging protrusion and the engaging groove is such that the lower mold is not pulled up from the lower mold fixing member.

  According to a fourth aspect of the present invention, in the above first aspect, when the upper mold is inserted into the upper mold fixing member in a different direction, the upper mold fixing member is A part of the upper mold comes into contact with the formed erroneous insertion prevention piece and cannot be inserted, and when the lower mold is inserted into the lower mold fixing member, the lower mold is inserted in the front-rear direction. In this case, a part of the lower mold comes into contact with an erroneous insertion preventing piece formed on the lower mold fixing member so that the insertion is impossible.

  In the first aspect of the present invention, the upper and lower molds are inserted while being guided with respect to the upper and lower mold fixing apparatus, and the upper and lower molds are closed by closing the opening of the upper and lower mold fixing apparatus by the rotating member. Since the mold is fixed in the upper and lower mold fixing device, it is easy to set the upper and lower molds manufactured for each product, and when the upper and lower molds are stored in a stacked state, the upper and lower molds Since the upper and lower molds can be inserted into the upper and lower mold fixing apparatus at the same time by making the space of the fixing apparatus close to the position corresponding to the thickness of the upper and lower molds stacked, the upper and lower molds Can be set in a short time.

  According to the second aspect of the present invention, at least two trapezoidal engagement protrusions and the trapezoidal groove are engaged between the back side of the upper and lower molds and the back side of the upper and lower mold fixing members. In addition, the trapezoidal protrusion and the trapezoidal groove are engaged between the front surface side of the upper and lower molds and the rotating member, and the upper and lower molds are fixed to the upper and lower mold fixing device in this engaged state. Therefore, the upper and lower molds can be processed with high accuracy without rattling in the upper and lower mold fixing apparatus.

  Further, in the means of claim 3, the upper mold falls from the upper mold fixing member in the engagement state of the trapezoidal engagement protrusion and the trapezoidal groove for fixing the upper mold to the upper mold fixing member. This prevents the upper mold from falling down and damaging the mold or damaging the operator even if large vibrations occur. In the engaged state of the trapezoidal engagement protrusion and the trapezoidal groove for fixing the mold, the lower mold is prevented from being pulled up from the lower mold fixing member. Even if force is applied, the lower mold is fixed and the lower mold is not damaged.

  Further, in claim 4, when inserting the upper and lower molds into the upper and lower mold fixing device, even if the operator makes a mistake and changes the front and rear direction, the insertion cannot be performed by the erroneous insertion preventing piece. It is possible to prevent the upper and lower molds and the upper and lower mold fixing devices from being damaged by forcibly inserting the upper and lower molds.

It is a disassembled perspective view of the state which mounts an upper metallic mold and a lower metallic mold to a press device about a metallic mold device concerning the present invention. It is a perspective view of the upper mold fixing device of the present invention fixed to the lower part of the ram of the press device. FIG. 4 is an enlarged side view of a part of FIG. 3. It is a perspective view of the lower mold fixing device of the present invention fixed to the upper part of the bed of a press device. It is sectional drawing which shows the state before processing to-be-processed board H, such as a metal plate, with the metal mold | die apparatus of this invention. It is sectional drawing of the state which processed the to-be-processed board H from the state of FIG. It is sectional drawing which shows the state which extracted the to-be-processed board H punched in the upper metal mold | die from the strip plate.

Embodiments of a mold apparatus according to the present invention will be described below with reference to the drawings.
1 to 4 show a lower die fixing device C and an upper die fixing device D for attaching the lower die A and the upper die B to the press device, and the lower die fixing device C is a lower master common member. The upper mold fixing device D is fixed to the lower surface of the punch holder 20 positioned at the lowermost portion of the upper master common member F, which will be described in detail later, by screws or the like.

  The lower mold fixing device C is formed in a U shape in a plan view in which the side where the operator is located is opened. The lower mold fixing device C includes a lower mold fixing member 1 and a rotating member 2 that rotates at one end of the lower mold fixing member 1 on the opening side (the right side in FIGS. 1 and 2). It is configured to be pivotally supported.

  The lower mold fixing member 1 is composed of an upper plate 1a, a middle plate 1b, and a lower plate 1c formed in a U shape in plan view, and a gap is formed between the upper plate 1a and the middle plate 1b. Has been. Further, the middle plate 1b and the lower plate 1c are screwed. In the gap between the upper plate 1a and the middle plate 1b, a plurality of springs 11 supported by pins 1a1 are arranged on each of the U-shaped sides, whereby a pressing force is applied to the upper plate 1a. When acted, the upper plate 1 a descends against the spring force of the spring 11. Further, the distance between the back surface of the upper plate 1a and the upper surface of the lower plate 1c is formed slightly wider than the thickness of the lower mold A.

  Trapezoidal engagement protrusions 1a1 are formed at two positions on the inner wall on the back side of the upper plate 1a. Further, the inner wall of the middle plate 1b is reverse to the front-rear direction of the lower mold A described in detail later. An incorrect insertion preventing piece 1b1 for preventing the lower mold A from being inserted when it is inserted into the upper and lower plates 1a, 1c is formed so as to protrude inward from the inner wall surfaces. In addition, positioning protrusions 1a3 for positioning by engaging with positioning holes (not shown) formed on the lower plate 4c side of the upper mold fixing device F, which will be described in detail later, are fixed to the four corners of the upper plate 1a. ing.

  As shown in FIGS. 1 and 2, the lower mold A is composed of a stripper holder 10, a punch pad 8, and a splashing 9 (see FIGS. 5 to 7). A spring 11 is wound around an outer periphery of a pin 10a whose one end is fixed to the stripper holder 10 side so that the stripper holder 10 can be lowered when opening, bending or the like. The spring 11 positioned by the pin 10a is attached between the punch pad 8 and the stripper holder 10 at the front left and right two places and the rear center one place.

  With this configuration, when the lower mold A is inserted from a normal direction (one spring 11 is attached at the center), the center spring 11 protrudes inward. Since there is no contact with the erroneous insertion prevention piece 1b1, the lower mold A is inserted into the back side and then the two left and right springs 11 come into contact with the erroneous insertion prevention piece 1b1 to be in a fixed state. When A is inserted in the reverse direction, the left and right springs 11 come into contact with the tip opening side of the erroneous insertion preventing piece 1b1, so the lower mold A does not move to the back side, and the lower mold Since the mold A does not reach the back, the operator can recognize that the insertion direction is wrong.

  Trapezoidal engagement protrusions 1a3 are formed at two positions on the inner peripheral surface on the back side of the upper plate 1a, and on the back side of the stripper holder 10 in the lower mold A, the engagement protrusions 1a3 are engaged. A trapezoidal groove 10b is formed.

  Next, the structure of the rotating member 2 will be described. The spring 11 is composed of upper and lower metal plates 2a and 2b, and the upper metal plate 2a can be moved up and down between the upper metal plates 2a and 2b. Is wound around the outer periphery of a pin 2a1 having one end fixed to the upper metal plate 2a side. Further, a trapezoidal engagement protrusion 2a2 is formed on the upper metal plate 2a of the rotating member 2, and the stripper holder 10 in the lower mold A in a state where the rotating member 2 is closed as shown by a solid line in FIG. It is configured to be engaged with a trapezoidal trapezoidal groove 10 c formed in the above.

  In the lower mold fixing device C configured as described above, when the lower mold A is pushed in with the normal direction forward, the lower mold A is inserted into the two engaging protrusions 1a1 of the upper plate as described above. When the two trapezoidal grooves 10b of the stripper holder 10 are engaged and then the rotating member 2 is closed, the engagement protrusion 2a2 of the upper metal plate 2a is engaged with the trapezoidal groove 10c of the stripper holder 10. Then, a groove portion of the lock plate 3 whose one end is rotatably supported by the middle plate 1b is engaged with the lock rod 2a3 fixed to the tip of the upper metal plate 2a, and the lower mold A is fixed to the lower mold. It becomes a fixed state with respect to the member 1.

  The trapezoidal engagement protrusion 1a3 formed on the upper plate 1a, the trapezoidal groove 10b formed on the stripper holder 10 of the lower mold A, and the trapezoid formed on the upper metal plate 2a of the rotating member 2. In the state where the engagement protrusion 2a2 of the lower mold A and the trapezoidal groove 10c formed in the stripper holder 10 of the lower mold A are engaged, even if an upward pulling force is generated with respect to the lower mold A, the lower mold fixing device The shapes of the engaging protrusion and the trapezoidal groove are determined so that the lower mold A is not lifted from C.

  In addition, positioning holes 10d into which positioning pins 28a suspended from four corners on the back surface of the stripper holder 28 in the upper mold B (described later) are inserted are formed in the four corners of the stripper holder 10 in the lower mold A, By inserting the positioning pin 28a into the positioning hole 10d, the lower mold A and the upper mold B can be accurately positioned.

  As described above, the spring 11 is interposed between the upper plate 1a and the middle plate 1b of the lower mold fixing device D and between the upper metal plate 2a and the lower metal plate 2b of the rotating member 2. When the upper mold fixing device D is lowered and the lowering force is applied to the lower mold fixing device D, the stripper plate 10 of the lower mold A is moved downward.

  The upper mold fixing device D has an upper mold fixing member 4 formed in a U-shape in plan view like the lower mold fixing device C, and one end on the opening side of the upper mold fixing member 4. It is comprised from the rotation member 5 pivotally supported so that rotation is possible.

  Next, the upper mold fixing member 4 will be described. In the upper mold fixing member 4, an upper plate 4a, an intermediate plate 4b, and a lower plate 4c are integrally formed. The distance from the upper surface of the plate 4c is slightly larger than the thickness of the upper mold B. Further, the inner wall of the intermediate plate 4b is a member of the lower mold fixing member for preventing the upper mold B from being inserted when the front and rear directions of the upper mold B, which will be described in detail later, are inserted in the opposite direction. An erroneous insertion prevention piece (not shown) similar to that of the plate 1b is formed so as to protrude inward from the inner wall surfaces of the upper and lower plates 4a and 4c.

  As shown in FIG. 1 and FIGS. 5 to 7, the upper die B includes a punch pad 21 that is replaceably attached to a punch holder 20 that is a lowermost member of the upper master common member F, a packing holder 25, A stripper holder 28 to which a stripper plate 29 is attached in an exchangeable manner, and a punch mounting plate 26 to which a punch 27 is screwed and which can be moved up and down in the space, are formed. A pin 21a into which the collar 21b is inserted is attached to the outer periphery at the center.

  With this configuration, when the upper mold B is inserted from a normal direction (one is attached at the center with the collar 21b), the collar 21b contacts the erroneous insertion preventing piece. Since the upper mold B is inserted to the back side, the two left and right springs 11 come into contact with the erroneous insertion preventing piece and are fixed, but the upper mold B is inserted in the reverse direction. Since the two left and right collars 21b come into contact with the tip opening side of the erroneous insertion preventing piece, the upper mold B does not move to the back side, and the upper mold B does not reach the back. The person can recognize that the insertion direction is wrong.

  A trapezoidal groove 28a that engages with the two engaging protrusions 4c1 is provided on the left and right sides of the stripper holder 28 on the back side, and an engaging protrusion 5b1 of a pressing member 5b, which will be described later, is engaged with a central part on the front side. A trapezoidal groove 28b is formed, and on the back side of the stripper holder 28, a positioning pin 28a fitted in a positioning hole 10b formed on the top surface of the stripper holder 10 of the lower mold A is provided on the back side. It is mounted in a state of hanging from the side.

  Next, the rotating member 5 has a base end portion which is pivotally supported by the rotating shaft 5a1 between the upper plate 4a and the lower plate 3, and a metal plate fixed to the central portion of the metal plate 5a. A pressing member 5b that presses the entire front portion of the upper mold B toward the back side when the upper die 5a is closed is integrally formed, and a trapezoidal engagement protrusion 5b1 is formed on the pressing member 5b. Further, lock rods 5a2 and 5a3 that are engaged with lock plates 6 and 6 'that are rotatably attached to the side surface and the front surface of the middle plate 4b are attached to the outside of the front end portion and the intermediate portion of the metal plate 5a. It has been.

  In the upper mold fixing device D configured in this way, when the upper mold A is pushed forward with the normal direction forward, the engagement formed on the lower plate 4c of the upper mold fixing member 4 When the trapezoidal groove 28c formed on the back surface side of the stripper holder 28 in the upper mold B is engaged with the protrusion 4c1, and then the rotating member 5 is closed, the engaging protrusion 5b1 of the pushing member 5b is in the upper mold B. A trapezoidal groove 28b formed on the front side of the stripper holder 28 is engaged. When the groove portions of the lock plates 6 and 6 'rotatably supported by the intermediate plate 4b are engaged with the lock rods 5a2 and 5a3 of the metal plate 5a, the upper die B is in contact with the upper die fixing member 4. And become fixed.

  The trapezoidal engagement protrusion 4c1 formed on the lower plate 4c of the upper mold fixing member 4 and the trapezoidal engagement protrusion 5b1 formed on the pressing member 5b, and the trapezoidal groove formed on the stripper holder 28 are shown. When a downward drop force is generated in the engaged state with 28b and 28c, the upper mold B is formed in a shape that does not accidentally drop.

  The rotating member 5 is fixed by two lock plates 6 and 6 ′ provided on the front side and the side surface of the upper mold fixing member 4. This is to prevent the upper mold B from dropping due to the rotation member 5 being detached from the upper mold fixing member 4 because the same is also applied to the rotation member 5.

  A step portion 5 a 5 is formed on the rotating shaft side of the rotating member 5, and this step portion 5 a 5 is positioned on the step portion 4 c 2 formed on the lower plate 4 c, and a step portion is also formed at the tip of the rotating member 5. 5a6 is formed, and this step portion 5a6 is engaged when the rotating member 5 is closed on the step portion 4c3 formed on the side surface of the lower plate 4c. Even if the weight of B is added, the rotating member 5 is not detached from the upper mold fixing device D while being fixed by the two lock plates 6 and 6 '.

  The case where the lower mold A is inserted into the lower mold fixing apparatus C and the upper mold B is separately inserted into the upper mold fixing apparatus D has been described. Rotating members 2 and 5 that have lowered the mold fixing device D to the lower mold fixing device C are opened, the opening is opened, and the lower mold A and the upper mold B are stored. By simultaneously inserting from the opening in the state, setting the lower mold A and the upper mold B in the lower mold fixing device C and the upper mold fixing device D, respectively, can be shortened by one time. Can be planned.

  Next, a die device that performs punching simultaneously with the punching of the workpiece H in a state where the lower die A and the upper die B are set in the lower die fixing device C and the upper die fixing device D, respectively. The entire structure will be described with reference to FIGS.

  The lower mold A is placed in contact with the bed 7 of the lower master E in a state where the lower mold A is set in the lower mold fixing device C described above. The lower mold A is formed with a punch pad 8 placed on the bed 7 of the lower master E, a spout 9 fixed to the upper surface of the punch pad 8, and an opening facing the top of the spout 9 The stopper holder 10 is made up of. The stripper holder 10 is formed with a hole 10a into which the head of a screw 8a screwed into the punch pad 8 is inserted.

  The fool hole 10a does not protrude from the surface of the stripper holder 10 when the head of the screw 8a is in the set state, and moves down for punching or punching by the operation of the stripper holder 10 and a punch 27 described later. Also, the depth of the head of the screw 8a does not protrude. A spring 11 is wound around the outer periphery of the screw 8a to push up the stripper holder 10 upward.

  The screws 8a are attached to the front left and right two places and the rear center one place. Further, the hole 12 formed in the stripper holder 10, the punch 9, the punch pad 8 and the lower master E is a hole for releasing the punched punched pieces to the outside of the press device.

  Next, the configuration of the upper master common member F will be described. 13 is a shank holder that moves up and down as the press device moves up and down, and 14 is a packing holder that is fixed to the lower surface of the shank holder 13 by screws. In the center of the back surface, a guide plate 15 is accommodated and a space that can move up and down is formed.

  A guide pin 15 a is attached to the upper surface of the guide plate 15. The guide pin 15 a protrudes upward through holes 14 a and 13 a formed in the packing holder 14 and the shank holder 13, and the upper end is attached to the Kanzashi 16. ing. The Kanzashi 16 moves up and down together with the shank holder 13 that moves up and down as the press apparatus moves up and down, but only the Kanzashi 16 starts to descend when it comes into contact with the stopper G fixed to the pressing apparatus side. However, the lift by the press device is stopped in a state in which the Kanzashi 16 is lowered and is in contact with the shank holder 13.

  A punch pad holder 17 is screwed to the lower surface of the packing holder 14 and has a small-diameter hole for inserting the push-down pin 18 and a large-diameter hole for accommodating the spring 19 communicating with the small-diameter hole. Yes. The head of the push-down pin 18 is in contact with the upper end of the spring 19. A punch holder 20 is screwed to the lower surface of the punch pad holder 17 and has a small diameter into which the lower end of the push-down pin 18 is inserted.

  Next, the structure of the upper mold that is in contact with the back surface of the punch holder 20 of the upper master common member F in the state where the upper mold B is set in the upper mold fixing device D will be described. A die pad 22 is attached to the punch pad 21 so as to be replaceable. The die holder 22 has a hole for inserting a punching pin 23 for making a hole in the work plate H and a hole communicating with the hole through which the push-down pin 18 is inserted. The auxiliary pin 24 is inserted.

  A packing holder 25 is fixed to the back surface of the punch pad 21 with screws, and a punch mounting plate 26 is provided in the inner space so as to be movable up and down. The lower end of the auxiliary pin 24 is in contact with the upper surface of the punch mounting plate 26. Reference numeral 27 denotes a punch fixed to the lower surface of the punch mounting plate 26 by screwing, and a hole communicating with the hole of the punch mounting plate 26 through which the punching pin 23 is inserted is formed.

  As shown in FIG. 4, 28 is a fixed stripper holder that is fixed to the punch pad 21 with screws 21a and collars 21b, and is exchanged according to the shape of the punch 27. A stripper plate 29 is disposed inside. The stripper plate 29 is fixed to the packing holder 25 with screws. The lower surface of the punch mounting plate 25 is in contact with the upper surface of the stripper plate 29 fixed with screws.

  Note that means for maintaining a predetermined distance between the screw 21a and the collar 21b are formed at three positions on the front left and right and the rear center. Further, positioning pins 22a are attached to the four corners of the die holder 22, and positioning is performed through the stripper holder 28 and fitted into positioning holes 10b formed on the upper surface of the stripper holder 10 in the lower mold A.

The operation of manufacturing a product having holes from the work plate H by the lower mold A and the upper mold B configured as described above will be described.
First, as shown in FIG. 5, when the work plate H is placed on the upper surface of the stripper holder 10 in the lower mold A and the press device is processed, the upper master common member F starts to descend. In this state, since the guide pin 15 is pushed up by the spring force of the spring 19 of the push-down pin 18 in the punch pad holder 17, the punch 27 is moved from the punch mounting plate 26 to the strip plate 29 by the weight of the punch mounting plate 26. The position is in contact.

  When the upper master common device F further descends from this state and the punch 27 comes into contact with the workpiece H, the spring of the spring 11 interposed between the upper plate 1a of the lower master common device E and the middle plate 1b. Start descent against the force. The punch mounting plate 26 accompanying the lowering is in a state of being in contact with the lowering plate, and therefore is raised until it is in contact with the die holder 22.

  Further, since the lower master common device E is lowered, the stripper holder 10 is pushed down by the engagement between the engaging protrusion 1a3 and the trapezoidal groove 10b of the stripper holder 10 of the lower mold A, so that the stripper holder 10 has a spring force of the spring 11. Therefore, the punch 9 moves up through the workpiece plate H and moves into the space portion of the stripper plate 29.

  As a result, the portion of the plate H to be processed corresponding to the protrusion 9 enters the space of the stripper plate 29 and is punched out. In addition, since the perforating pin 23 starts to perforate the workpiece plate H that has entered the space of the stripper plate 29, the punched product is perforated (see FIG. 6).

  In this state, the punched product has entered the space of the stripper plate 29. Therefore, when the upper master common member F is raised and the cane 16 shown in FIG. 7 is brought into contact with the stopper G, the guide plate 15 is lowered because the upper master common member F is lowered with respect to the shank holder 13 of the upper die fixing device D.

  When the guide plate 15 is lowered, the push-down pin 18 is lowered against the spring force of the spring 19, so that the push-down pin 18 lowers the punch mounting plate 26 via the auxiliary pin 24. As a result, the punch 27 is lowered, and the product entering the space of the stripper plate 29 is pushed out and dropped. Therefore, the product is removed in the next processing operation, so that the next processing can be performed smoothly.

  The lower mold A and the upper mold B described above are only one embodiment, and various types can be obtained by exchanging the lower mold A and the upper mold B depending on the product and size such as punching, punching, punching and bending. It is possible to create products.

A Lower mold B Upper mold C Lower mold fixing apparatus D Upper mold fixing apparatus E Lower master common member F Upper master common member 1 Upper mold fixing member 2 Rotating member 4 Lower mold fixing member 5 Rotating member

Claims (4)

An upper master common member that moves up and down by a press device and is used in common regardless of the product to be processed,
An upper die that is attached to the back surface of the upper master common member and is formed in a U shape in plan view, and has an opening formed on the operator's working position side, and can be inserted while guiding the upper mold from the opening. An upper mold fixing device including a mold fixing member and a rotating member that closes the opening while the upper mold is inserted to fix the upper mold;
A lower master common member that is attached to the fixed side of the press device and used in common regardless of the product to be processed,
The lower mold is fixed in a state where the lower mold fixing member and the lower mold are inserted so that the lower mold can be inserted while guiding the lower mold. A lower mold fixing device including a rotating member that closes the opening of the member and fixes the lower mold;
The mold apparatus characterized by comprising.   The upper mold and the upper mold fixing member are formed by engaging at least two trapezoidal engagement protrusions and a trapezoidal groove between the back side of the upper mold and the back side of the upper mold fixing member. The trapezoidal protrusion and the trapezoidal groove are engaged between the front surface side of the upper mold and the rotating member, and the upper mold is fixed to the upper mold fixing device in this engaged state. The lower mold and the lower mold fixing member are fixed at least two trapezoidal engagement protrusions between the back side of the lower mold and the back side of the lower mold fixing member. The trapezoidal groove is engaged, and the trapezoidal protrusion and the trapezoidal groove are engaged between the front surface side of the lower mold and the rotating member. The mold apparatus according to claim 1, wherein the lower mold is fixed.   In the engagement state of the trapezoidal engagement protrusion and the trapezoidal groove for fixing the upper mold to the upper mold fixing member, the shape of the engagement protrusion and the engagement groove is fixed to the upper mold. The engagement protrusion is configured so that it does not fall from the member, and the trapezoidal engagement protrusion is fixed to the lower mold fixing member and the trapezoidal groove is engaged with the trapezoidal groove. 3. The mold apparatus according to claim 2, wherein the shape of the engagement groove is such that the lower mold is not pulled up from the lower mold fixing member.   When the upper mold is inserted into the upper mold fixing member when the upper mold is inserted in a different direction, the upper mold is attached to the erroneous insertion preventing piece formed on the upper mold fixing member. When the lower mold is inserted into the lower mold fixing member in the front-back direction when the lower mold is inserted into the lower mold fixing member, the lower mold fixing member is formed. 2. The mold apparatus according to claim 1, wherein a part of the lower mold comes into contact with the erroneous insertion preventing piece and cannot be inserted.

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