CN210907955U - A multi-station stamping progressive die for automatic production of curved chain plates - Google Patents

Abstract

The utility model discloses a multistation punching press upgrades mould for curved link joint automated production belongs to machining technical field. The progressive die comprises a multi-station die bottom plate, a nitrogen spring cushion plate, a supporting plate, a multi-station die lower template, a bending die core, a forming die core, a punching die core, a multi-station die upper template, a die handle, a guide pillar upper mounting seat, a guide sleeve, a guide pillar and a guide pillar base. The working principle is as follows: a mould core, the shaping mold core that bends, the mould core that punches a hole for curved link joint automated production sets gradually in the mould that upgrades from the feed end, when upgrading the mould during operation, PLC controlled automatic feeding unit sends the work piece in proper order to mould core, shaping mold core, three stations of mould core that punches a hole of bending, can accomplish the processing of bending, shaping and punching a hole of work piece simultaneously in a stroke of punch press, become the piece of bending, formed part and the piece that punches a hole in proper order with the work piece, the piece that punches a hole is curved link joint finished product part, take out it by automatic feeding unit and put into the finished product frame.

Description

A multi-station stamping progressive die for automatic production of curved chain plates

Technical field:

The utility model belongs to the technical field of mechanical processing, and in particular relates to a multi-station stamping progressive die used for automatic production of curved chain plates, which can complete the bending and forming of the curved chain plates by one punch It can be applied to the automatic production of curved chain plates, which is conducive to reducing the labor intensity of operators and effectively improving processing efficiency.

Background technique:

The curved chain plate is an important part of the steel pinning chain, and its stamping generally requires four processes of blanking, bending, forming and punching. At present, for the processing of curved chain plates, the single-station stamping mode is generally still used, that is, each process needs to be equipped with a press, the labor intensity of the operators is high, and there are many safety hazards. The utility model provides a multi-station punching progressive die for automatic production of a curved chain plate. The multi-station punching progressive die is composed of three sets of cores for bending, forming and punching. Completing the three-station stamping process of bending, forming and punching is conducive to reducing the labor intensity of the operator and can effectively improve the processing efficiency.

Invention content:

The purpose of this utility model is to provide a multi-station stamping progressive die for automatic production of curved chain plates. The three-station stamping process of bending, forming and punching of the curved chain plate is completed in one stroke.

The utility model provides a multi-station stamping progressive die for automatic production of a curved chain plate. The device comprises a multi-station die base plate 1, a nitrogen gas spring 2, a nitrogen gas spring backing plate 3, a support plate 4, and a multi-station die. The lower die plate 5, the bending die core 6, the forming die core 7, the punching die core 8, the upper die plate 9 of the multi-station die, the die handle 10 and two guiding mechanisms with the same structure; The forming die core 7 and the punching die core 8 are sequentially arranged between the lower die plate 5 of the multi-station die and the upper die plate 9 of the multi-station die.

There are four said support plates 4, and said support plates 4 are respectively fixed with said multi-station mold bottom plate 1 and said multi-station mold lower template 5 through bolts, and the four said support plates 4 with the same structure are It is arranged on the bottom plate 1 of the multi-station mold; the bottom of the mold handle 10 is provided with a flange, the upper template 9 of the multi-station mold is provided with a mold handle hole, and the mold handle 10 is connected to the multi-station mold. The upper template 9 adopts clearance fit; the two guiding mechanisms with the same structure are symmetrically arranged on the left and right sides of the lower template 5 of the multi-station mold and the upper template 9 of the multi-station mold, and the guiding mechanism is located on the right side. It includes a guide column upper mounting seat 11, a guide sleeve 12, a guide column 13 and a guide column base 14. The guide column upper mounting seat 11 is fixed on the right side of the upper template 9 of the multi-station mold by bolts. 13 is fixed on the right side of the lower template 5 of the multi-position mold through the guide post base 14, the guide post 13 is sleeved with a coil spring, the guide sleeve 12 is vacantly sleeved on the guide post 13, and the The guide sleeve 12 is in clearance fit with the guide post 13 .

The bending mold core 6 includes a bending upper backing plate 15, a bending upper mold fixing plate 16, a bending upper mold 17, a bending thimble 18, a bending positioning column 20, a bending lower mold fixing plate 21, a bending Lower die backing plate 22, lower bending die bottom plate 23 and lower bending die 24; The bottom plate 23 of the lower mold is fixed in turn by bolts, and the bottom plate 23 of the lower mold is fixed on the lower template 5 of the multi-station mold by bolts. The bending positioning columns 20 are arranged on the front and rear sides of the lower bending die fixing plate 21 to determine the bending station, and the blanking parts are placed in the bending station; the bending positioning columns 20 and the The lower bending die fixing plate 21 is connected by transition fit, the upper bending backing plate 15, the upper bending die fixing plate 16 and the upper bending die 17 are successively connected by bolts, and the upper backing plate 15 is bent. It is fixed on the upper mold plate 9 of the multi-station mold by bolts. The upper bending mold 17 and the lower bending mold 24 are each provided with two ejector spring grooves. Under the action, it moves up and down in the ejector spring groove.

The molding die core 7 includes a molding upper backing plate 25, a molding upper mold fixing plate 26, a molding upper mold 27, a thimble 28 for a molding punch, a molding lower floating block 30, a molding lower mold 31, a molding positioning post 32, and a molding lower mold. The mold fixing plate 33 , the lower molding bottom plate 34 and the lower molding bottom plate 35 , the molding lower floating block 30 is supported by the nitrogen gas spring 2 , and the nitrogen gas spring 2 is fixed at the place by the nitrogen gas spring backing plate 3 . On the multi-station mold base plate 1, there are two lower molding dies 31, the lower molding dies 31 are arranged on the front and rear sides of the lower molding floating block 30, the lower molding dies 31, the lower molding dies 31 The mold fixing plate 33, the lower molding bottom plate 34 and the lower molding bottom plate 35 are successively connected by bolts, and the lower molding bottom plate 35 is fixed on the lower template 5 of the multi-position mold by bolts, There are ten forming positioning columns 32 , and the ten forming positioning columns 32 with the same structure are evenly distributed around the lower forming mold fixing plate 33 . placed in the forming station; the forming positioning post 32 and the forming lower die fixing plate 33 are connected by transition fit; the forming upper backing plate 25 , the forming upper die fixing plate 26 and the forming upper die 27 The upper forming plate 25 is fixed on the upper template 9 of the multi-station mold by bolts in turn; It moves up and down in the top spring groove under the action of the top spring.

The punching die core 8 includes a punching lower die base 36, a punching side baffle plate 37, a punching lower wedge 38, a punching and punching nail fixing plate 39, a workpiece side pressing plate 40, a punching die 41, and a punch. The positioning pin 42, the upper die wedge block 43, the upper punching template 44, the punching workpiece pressure plate 45, the large hole punching nail 47, the small hole punching nail 48, the punching thimble 49, the return spring stopper 50, the punching The lower die base 36 is fixed on the lower template 5 of the multi-station die by bolts. The punching side baffles 37 are L-shaped. There are two punching side baffles 37, and the two have the same structure. The punching side baffles 37 are respectively fixed to the front and rear sides of the punching lower die base 36 with bolts; There are two. The two lower punching wedges 38 with the same structure are symmetrically arranged on the front and rear sides of the punching die 41, and the bottom surfaces of the two lower punching wedges 38 with the same structure are provided with two A spring groove is used to place the return spring, and four return spring stops 50 with the same structure are fixed on the lower punching die base 36. The return spring stops 50 hold the return spring Restricted in the spring groove of the lower punching wedge 38; the lower punching die seat 36 is U-shaped, and a blanking hole is provided in the middle of the lower punching die seat 36, and the lower punching die The left and right inner sides of the seat 36 are respectively provided with rectangular guide rail grooves, the left and right sides of the lower punching wedge 38 are respectively provided with rectangular guide rails, the rectangular guide rails on the left and right sides of the lower punching wedge 38 and the lower punching die seat The connection between the rectangular guide rail grooves on the left and right inner sides of 36 is a clearance fit, and the lower punching wedge 38 can move back and forth in the guide rail groove of the lower punching die base 36 through the connection of the rectangular guide rail; The lower hole wedge 38 and the punching nail fixing plate 39 are fixedly connected by bolts, and the large hole punching nail 47 and the small hole punching nail 48 are respectively fixed on the upper and lower sides of the punching nail fixing plate 39 . Inside the counterbore; the punching die 41 is a hollow prismatic shape, and four punch positioning pins 42 with the same structure are provided on the front and rear sides of the punching die 41. The punching die 41 Two upper and lower punching holes are respectively provided on the front and rear sides, and the upper and lower punching holes and the large hole punching nails 47 and the small hole punching nails 48 respectively constitute a convex and concave die for the lateral punching holes of the pinned chain bending plate. The punching die 41 is fixed on the punching lower die base 36 by bolts; there are two workpiece side pressing plates 40 , and the two workpiece side pressing plates 40 with the same structure are located on the punching die 41 On the front and rear sides of the workpiece side pressure plate 40, there are upper and lower through holes, and the large hole punching nail 47 and the small hole punching nail 48 can pass through the through holes on the workpiece side pressure plate 40 to complete the alignment. The punching process of the workpiece; the workpiece side pressing plate 40 is connected to the punching and punching nail fixing plate 39 through four spring pull rods, and each spring pull rod is provided with a pushing spring. During the stamping process, the workpiece side The pressing plate 40 can move axially along the spring pull rod under the action of the pushing spring; the front and rear sides of the blanking hole of the punching lower die base 36 are respectively provided with one for installation The through hole of the ejector pin 49 for punching, the lower template 5 of the multi-position mold is provided with a blanking hole and a ejector spring slot for discharging waste chips and installing ejector springs. The thimble 49 for punching can move up and down in the through hole of the lower punching die base 36; the slope of the upper die wedge block 43 is 45 degrees, and the tail end of the upper die wedge block 43 is provided with a tenon. The tenon of the upper die wedge-shaped block 43 is located in the tenon groove of the upper die plate 44 for punching. There are two upper die wedge-shaped blocks 43, and the two upper die wedge-shaped blocks 43 with the same structure are fixed on the punching plate by bolts. The front and rear sides of the upper platen 44 of the hole; the punching workpiece pressing plate 45 is connected to the upper platen 44 of the punching hole through two spring pull rods, and each spring pull rod is provided with a pushing spring. The workpiece pressing plate 45 can move up and down along the spring pull rod under the action of the pushing spring; the upper punching plate 44 is fixed on the upper plate 9 of the multi-station die by bolts.

Description of drawings:

Fig. 1 is the structural representation of a kind of multi-station stamping progressive die used for automatic production of curved chain plate of the present utility model;

Fig. 2 is the structural schematic diagram of the bending die core in the utility model;

FIG. 3 is a schematic diagram of the structure of the molding die core in the utility model;

4 is a schematic diagram of the structure of the punching die core in the utility model;

Fig. 5 is the top view structure schematic diagram of A-A half-section in Fig. 4;

FIG. 6 is a schematic diagram of the shape change of the workpiece after punching processing of the die core at each station in the utility model.

In the picture: 1: Multi-station mold bottom plate, 2: Nitrogen gas spring, 3: Nitrogen gas spring backing plate, 4: Support plate, 5: Multi-station mold lower template, 6: Bending mold core, 7: Forming mold core, 8: Punching die core, 9: Multi-station die upper template, 10: Die handle, 11: Guide post upper base, 12: Guide sleeve, 13: Guide post, 14: Guide post base, 15: Bending upper pad Plate, 16: Bending upper die fixing plate, 17: Bending upper die, 18: Bending thimble, 19: Blanking parts, 20: Bending positioning column, 21: Bending lower die fixing plate, 22: Bending Lower die pad, 23: Bending lower die bottom plate, 24: Bending lower die, 25: Forming upper pad, 26: Forming upper die fixing plate, 27: Forming upper die, 28: Forming punch with ejector pin, 29 : Bending parts, 30: Forming lower floating block, 31: Forming lower die, 32: Forming positioning column, 33: Forming lower die fixing plate, 34: Forming lower die bottom plate, 35: Forming lower die bottom plate, 36: Punching lower die seat, 37: punching side baffle, 38: punching lower wedge, 39: punching and punching nail fixing plate, 40: workpiece side pressing plate, 41: punching die, 42: punch positioning pin , 43: Upper die wedge block, 44: Punching upper template, 45: Punching workpiece pressure plate, 46: Formed part, 47: Large hole punching nail, 48: Small hole punching nail, 49: Punching thimble, 50: Return spring stop, 51: punching parts.

Detailed ways:

The utility model provides a multi-position stamping progressive die for automatic production of curved chain plates, including a bending die core 6, a forming die core 7, and a punching die core 8, which can complete the opposite bending in one stroke of the punching machine Stamping processing of three stations of bending, forming and punching of chain plate workpieces.

Its working principle is as follows: the bending die core 6, the forming die core 7, and the punching die core 8 used for automatic processing of the curved chain plate are sequentially arranged on the multi-station stamping stage from the feeding end. into the mold. When the multi-station stamping progressive die is working, the automatic feeding device controlled by PLC will place the blanking part 19 on the bending die core 6 and place the bending part 29 on the forming die core 7 , place the formed part 46 on the punching die core 8, and then punch the punch once. In the bending die core 6, the upper bending die 17 and the lower bending die 24 are punched, and the blanking part 19 is punched into the bending part 29. When the punch returns, the bending The ejector pin 18 ejects the bending member 29 under the action of the ejector spring. In the forming die core 7, the forming upper die 27 moves downward with the punching machine, and is punched with the forming lower floating block 30 and the forming lower die 31, and the bending part 29 is punched into the forming part 46. During the return stroke of the punch, the forming punch 28 pushes the forming part 46 away from the forming upper die 27 under the action of the ejector spring, and the forming lower floating block 30 is in the position of the nitrogen gas spring 2. Return to the original position under the action. In the punching die core 8, the punching workpiece pressing plate 45 first contacts the forming part 46 with the stroke of the punching machine, and presses the forming part 46 down, and at the same time the punching ejector pin 49 is pushed by the punching machine. The molded part 46 is pressed down. Then the upper die wedge 43 comes into contact with the lower punching wedge 38, the punch continues to move downward, the lower punching wedge 38 moves toward the middle, and the lower punching wedge 38 is blocked by the return spring. The return spring between the blocks 50 is compressed, and the workpiece side pressing plate 40 presses the formed part 46 to prevent the formed part 46 from deviating from the position during the punching process. Then, the large hole punching nail 47 and the small hole punching nail 48 contact the workpiece through the through holes on the side platen 40 of the workpiece, punch the formed part 46 into the punching part 51, and punch out waste chips It falls into the waste hole of the punching die 41, and is discharged through the punching lower die base 36, the multi-station die lower template 5 and the blanking hole of the multi-station die bottom plate 1, and the punch strokes Finish. When the punching block returns, the upper die wedge block 43 moves upward, and under the action of the return spring, the punching lower wedge block 38 moves to the outside, driving the large hole punching pin 47 and the small hole The punching pin 48 returns to the initial position, and the punching ejector pin 49 pushes the punching piece 51 on the punching die 41 loose under the action of the ejector spring. After the punch returns to the initial position, the automatic feeding device sends the workpiece on the previous station to the next station for stamping processing, and finally the punching piece 51 is taken out by the automatic feeding device and placed in the finished product frame, that is, the bending chain is completed. Multi-station stamping of plates.

Claims (1)

1. A multi-station progressive stamping die for automatic production of a bent chain plate is characterized by comprising a multi-station die bottom plate (1), a nitrogen spring (2), a nitrogen spring backing plate (3), a supporting plate (4), a multi-station die lower template (5), a bending die core (6), a forming die core (7), a punching die core (8), a multi-station die upper template (9), a die handle (10) and two guide mechanisms with the same structure; the bending mold core (6), the forming mold core (7) and the punching mold core (8) are sequentially arranged between the lower template (5) and the upper template (9) of the multi-station mold; the number of the support plates (4) is four, the support plates (4) are fixedly connected with the multi-station die bottom plate (1) and the multi-station die lower template (5) through bolts respectively, and the four support plates (4) with the same structure are uniformly distributed on the multi-station die bottom plate (1); a flange is arranged at the bottom of the die handle (10), a die handle hole is formed in the upper die plate (9) of the multi-station die, and the die handle (10) is in clearance fit with the upper die plate (9) of the multi-station die; the two guide mechanisms with the same structure are arranged on the left side and the right side of the lower template (5) and the upper template (9) of the multi-station die in a bilateral symmetry mode, the guide mechanism on the right side comprises an upper guide post mounting seat (11), a guide sleeve (12), a guide post (13) and a guide post base (14), the upper guide post mounting seat (11) is fixed on the right side of the upper template (9) of the multi-station die through bolts, the guide post (13) is fixed on the right side of the lower template (5) of the multi-station die through the guide post base (14), a spiral spring is sleeved on the guide post (13), the guide sleeve (12) is sleeved on the guide post (13) in an empty mode, and the guide sleeve (12) and the guide post (13) are in clearance; the bending die core (6) comprises a bending upper base plate (15), a bending upper die fixing plate (16), a bending upper die (17), a bending thimble (18), a bending positioning column (20), a bending lower die fixing plate (21), a bending lower die base plate (22), a bending lower die bottom plate (23) and a bending lower die (24), the bending lower die fixing plate (21), the bending lower die base plate (22) and the bending lower die bottom plate (23) are fixedly connected in sequence through bolts, and the bending lower die bottom plate (23) is fixed on the multi-station die lower die plate (5) through bolts; the bending positioning columns (20) are six, the six bending positioning columns (20) with the same structure are arranged on the front side and the rear side of the lower bending die fixing plate (21) and used for determining a bending station, blanking pieces are placed on the bending station, the bending positioning columns (20) are connected with the lower bending die fixing plate (21) in a transition fit mode, the upper bending base plate (15), the upper bending die fixing plate (16) and the upper bending die (17) are fixedly connected through bolts in sequence, the upper bending base plate (15) is fixed on the upper multi-station die template (9) through the bolts, the upper bending die (17) and the lower bending die (24) are respectively provided with two ejection spring grooves, and the bending ejector pins (18) can move up and down in the ejection spring grooves under the action of the ejection springs; the forming mold core (7) comprises a forming upper backing plate (25), a forming upper mold fixing plate (26), a forming upper mold (27), a forming male mold thimble (28), a forming lower floating block (30), a forming lower mold (31), a forming positioning column (32), a forming lower mold fixing plate (33), a forming lower mold lower backing plate (34) and a forming lower mold bottom plate (35), wherein the forming lower floating block (30) is supported by the nitrogen spring (2), the nitrogen spring (2) is fixed on the multi-station mold bottom plate (1) through the nitrogen spring backing plate (3), the forming lower molds (31) are provided with two parts, the forming lower molds (31) are arranged on the front side and the rear side of the forming lower floating block (30), the forming lower molds (31), the forming lower mold fixing plate (33), the forming lower mold lower backing plate (34) and the forming lower mold bottom plate (35) are fixedly connected through bolts in sequence, the forming lower die base plate (35) is fixed on the lower die plate (5) of the multi-station die through bolts, ten forming positioning columns (32) with the same structure are uniformly distributed around the forming lower die fixing plate (33), the forming positioning columns (32) are used for determining forming stations, and bent pieces are placed on the forming stations; the forming positioning column (32) is connected with the forming lower die fixing plate (33) in a transition fit manner; the upper forming base plate (25), the upper forming die fixing plate (26) and the upper forming die (27) are fixedly connected through bolts in sequence, and the upper forming base plate (25) is fixed on the upper multi-station die template (9) through bolts; the forming upper die (27) is provided with a material ejecting spring groove, and the ejector pin (28) for the forming male die can move up and down in the material ejecting spring groove under the action of the material ejecting spring; the punching die core (8) comprises a punching lower die holder (36), punching side baffles (37), a punching lower wedge block (38), a punching nail fixing plate (39), a workpiece side pressing plate (40), a punching female die (41), a male die positioning pin (42), an upper die wedge block (43), a punching upper die plate (44), a punching workpiece pressing plate (45), a large-hole punching nail (47), a small-hole punching nail (48), a punching thimble (49) and a return spring stop block (50), wherein the punching lower die holder (36) is fixed on the multi-station die lower die plate (5) through bolts, the punching side baffles (37) are L-shaped, the number of the punching side baffles (37) is two, and the two punching side baffles (37) with the same structure are respectively fixed on the front side and the rear side of the punching lower die holder (36) through bolts; the punching lower wedge blocks (38) are right-angled trapezoidal blocks with 45-degree inclined planes, two punching lower wedge blocks (38) are arranged, the two punching lower wedge blocks (38) with the same structure are symmetrically arranged on the front side and the rear side of the punching female die (41), two spring grooves are formed in the bottom surfaces of the two punching lower wedge blocks (38) with the same structure and used for placing return springs, four return spring check blocks (50) with the same structure are fixed on the punching lower die holder (36), and the return springs are limited in the spring grooves of the punching lower wedge blocks (38) by the return spring check blocks (50); the punching lower die holder (36) is U-shaped, a blanking hole is formed in the middle of the punching lower die holder (36), rectangular guide rail grooves are formed in the left inner side surface and the right inner side surface of the punching lower die holder (36), rectangular guide rails are formed in the left side surface and the right side surface of the punching lower wedge block (38), the rectangular guide rails on the left side surface and the right side surface of the punching lower wedge block (38) are connected with the rectangular guide rail grooves on the left inner side surface and the right inner side surface of the punching lower die holder (36) in a clearance fit mode, and the punching lower wedge block (38) can move back and forth in the guide rail grooves of the punching lower die holder (36); the lower punching wedge block (38) is fixedly connected with the punching nail fixing plate (39) through bolts, and the large hole punching nail (47) and the small hole punching nail (48) are fixedly connected in upper and lower counter bores of the punching nail fixing plate (39) respectively; the punching female die (41) is of a hollow prismatic shape, the front side surface and the rear side surface of the punching female die (41) are respectively provided with four male die positioning pins (42) with the same structure, the front side surface and the rear side surface of the punching female die (41) are respectively provided with an upper punching hole and a lower punching hole, the upper punching hole and the lower punching hole respectively form a male die and a female die which are used for transversely opposite punching of a pin joint chain bent chain plate with the large hole punching nail (47) and the small hole punching nail (48), and the punching female die (41) is fixed on the punching lower die holder (36) through bolts; the number of the workpiece side pressing plates (40) is two, the two workpiece side pressing plates (40) with the same structure are positioned on the front side and the rear side of the punching female die (41), an upper through hole and a lower through hole are formed in the workpiece side pressing plates (40), and the large hole punching nail (47) and the small hole punching nail (48) can penetrate through the through holes in the workpiece side pressing plates (40) to complete punching of the workpiece; the workpiece side pressing plate (40) is connected to the punching and punching nail fixing plate (39) through four spring pull rods, each spring pull rod is provided with a material pushing spring, and the workpiece side pressing plate (40) can axially move along the spring pull rods under the action of the material pushing springs in the punching process; the front side and the rear side of a blanking hole of the punching lower die holder (36) are respectively provided with a through hole for mounting the punching thimble (49), the lower die plate (5) of the multi-station die is provided with a blanking hole and an ejection spring groove for discharging scraps and mounting an ejection spring, and the punching thimble (49) can move up and down in the through hole of the punching lower die holder (36) under the action of the ejection spring; the inclined plane of the upper die wedge-shaped block (43) is 45 degrees, a tenon is arranged at the tail end of the upper die wedge-shaped block (43), the tenon of the upper die wedge-shaped block (43) is positioned in a mortise of the punching upper template (44), two upper die wedge-shaped blocks (43) are arranged, and the two upper die wedge-shaped blocks (43) with the same structure are fixed on the front side and the rear side of the punching upper template (44) through bolts; the punching workpiece pressing plate (45) is connected to the punching upper template (44) through two spring pull rods, each spring pull rod is provided with a pushing spring, and the punching workpiece pressing plate (45) can move up and down along the spring pull rods under the action of the pushing springs in the punching process; the punching upper template (44) is fixed on the multi-station die upper template (9) through bolts.

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