A multi-station stamping progressive die for automated production of bent chain plates

Abstract

The invention discloses a multi-station stamping progressive die for the automated production of bent chain plates, and belongs to the field of mechanical processing technology. The progressive die comprises a multi-station die bottom plate, a nitrogen spring, a nitrogen spring pad, a support 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 column upper mounting seat, a guide sleeve, a guide column, and a guide column base. Its working principle is: the bending die core, the forming die core, and the punching die core for the automated production of bent chain plates are sequentially arranged in the progressive die from the feed end. When the progressive die is working, the automatic feeding device controlled by the PLC sequentially feeds the workpiece to the three stations of the bending die core, the forming die core, and the punching die core. The bending, forming, and punching processing of the workpiece can be completed simultaneously in one stroke of the punching machine, and the workpiece is sequentially punched into a bending part, a forming part, and a punching part. The punching part is the finished part of the bent chain plate, and is taken out by the automatic feeding device and placed in a finished product frame.

Description

Technical field:

[0001] The present invention belongs to the field of mechanical processing technology, and specifically relates to a multi-station stamping progressive die for the automated production of bent chain plates. The multi-station stamping progressive die can complete the bending, forming and punching of the bent chain plates in one stamping, and can be applied to the automated production of the bent chain plates, which is beneficial to reducing the labor intensity of operators and can effectively improve processing efficiency. Background technology:

[0002] The bent chain plate is an important part of the steel pin chain, and its stamping processing generally requires four processes of blanking, bending, forming and punching. At present, the processing of bent chain plates generally still adopts a single-station stamping mode, 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 present invention provides a multi-station stamping progressive die for the automated production of bent chain plates. The multi-station stamping progressive die consists of three sets of mold cores for bending, forming and punching. The stamping processing of the three stations of bending, forming and punching can be completed in one stroke of the punch press, which is beneficial to reduce the labor intensity of the operators and can effectively improve the processing efficiency. Summary of the invention:

[0003] The purpose of the present invention is to provide a multi-station stamping progressive die for the automated production of bent chain plates. The multi-station stamping progressive die consists of three sets of mold cores for bending, forming and punching, and can complete the stamping processing of the three stations of bending, forming and punching of the bent chain plates in one stroke of the punch press.

[0004] The present invention provides a multi-station stamping progressive die for the automated production of bent chain plates, the device comprising a multi-station die bottom plate 1, a nitrogen spring 2, a nitrogen spring pad 3, a support 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 die core 6, the forming die core 7 and the punching die core 8 are sequentially arranged between the multi-station die lower template 5 and the multi-station die upper template 9.

[0005] There are four support plates 4, and the support plates 4 are fixedly connected to the multi-station mold bottom plate 1 and the multi-station mold lower template 5 by bolts respectively. The four support plates 4 with the same structure are evenly distributed on the multi-station mold bottom plate 1; the bottom of the mold handle 10 is provided with a flange, and the multi-station mold upper template 9 is provided with a mold handle hole, and the mold handle 10 and the multi-station mold upper template 9 are clearance-matched; the two guide mechanisms with the same structure are symmetrically arranged on the left and right sides of the multi-station mold lower template 5 and the multi-station mold upper template 9, and the guide mechanism located on the right side 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 to the right side of the multi-station mold upper template 9 by bolts, and the guide column 13 is fixed to the right side of the multi-station mold lower template 5 through the guide column base 14, the guide column 13 is sleeved with a coil spring, the guide sleeve 12 is loosely sleeved on the guide column 13, and the guide sleeve 12 and the guide column 13 are clearance-matched.

[0006] The bending mold core 6 includes a bending upper pad 15, a bending upper mold fixing plate 16, a bending upper mold 17, a bending ejector pin 18, a bending positioning column 20, a bending lower mold fixing plate 21, a bending lower mold pad 22, a bending lower mold bottom plate 23 and a bending lower mold 24; the bending lower mold 24, the bending lower mold fixing plate 21, the bending lower mold pad 22 and the bending lower mold bottom plate 23 are sequentially fixedly connected by bolts, and the bending lower mold bottom plate 23 is fixed to the multi-station mold lower template 5 by bolts, and the bending positioning columns 20 are six, and the six bending positioning columns 20 with the same structure are arranged It is arranged on the front and rear sides of the bending lower die fixing plate 21 to determine the bending station, and the blanking parts are placed at the bending station; the bending positioning column 20 is connected to the bending lower die fixing plate 21 by transition fit, the bending upper pad 15, the bending upper die fixing plate 16 and the bending upper die 17 are fixedly connected in sequence by bolts, the bending upper pad 15 is fixed to the multi-station mold upper template 9 by bolts, the bending upper die 17 and the bending lower die 24 are each provided with two ejector spring grooves, and the bending ejector pin 18 can move up and down in the ejector spring groove under the action of the ejector spring.

[0007] The molding die core 7 comprises a molding upper pad 25, a molding upper die fixing plate 26, a molding upper die 27, a molding punch ejector pin 28, a molding lower floating block 30, a molding lower die 31, a molding positioning column 32, a molding lower die fixing plate 33, a molding lower die lower pad 34 and a molding lower die bottom plate 35. The molding lower floating block 30 is supported by the nitrogen spring 2, and the nitrogen spring 2 is fixed to the multi-station die bottom plate 1 through the nitrogen spring pad 3. There are two molding lower dies 31, and the molding lower dies 31 are arranged on the front and rear sides of the molding lower floating block 30. The molding lower die 31, the molding lower die fixing plate 33, the molding lower die lower pad 34 and the molding lower die bottom plate 35 are sequentially fixedly connected by bolts. The mold bottom plate 35 is fixed to the multi-station mold lower mold plate 5 by bolts. There are ten forming positioning columns 32. The ten forming positioning columns 32 with the same structure are evenly distributed around the forming lower mold fixed plate 33. The forming positioning columns 32 are used to determine the forming station, and the bent parts are placed at the forming station; the forming positioning columns 32 and the forming lower mold fixed plate 33 are connected by transition fit; the forming upper pad plate 25, the forming upper mold fixed plate 26 and the forming upper mold 27 are fixedly connected by bolts in sequence, and the forming upper pad plate 25 is fixed to the multi-station mold upper mold plate 9 by bolts; the forming upper mold 27 is provided with a ejector spring groove, and the forming punch ejector pin 28 can move up and down in the ejector spring groove under the action of the ejector spring.

[0008] The punching die core 8 includes a punching lower die base 36, a punching side baffle 37, a punching lower wedge block 38, a punching rivet fixing plate 39, a workpiece side pressure plate 40, a punching die 41, a punch positioning pin 42, an upper die wedge block 43, a punching upper template 44, a punching workpiece pressure plate 45, a large hole rivet 47, a small hole rivet 48, a punching ejector pin 49, and a return spring block 50. The punching lower die base 36 is fixed to the multi-station mold lower template 5 by bolts. The punching side baffle 37 is L-shaped. There are two punching side baffles 37. The two punching side baffles 37 with the same structure are respectively fixed to the front and rear sides of the punching lower die base 36 by bolts; the punching lower wedge block 38 is a right-angle trapezoidal block with a 45-degree inclined surface There are two punching lower wedge blocks 38, and the two punching lower wedge blocks 38 with the same structure are symmetrically arranged on the front and rear sides of the punching die 41. The bottom surfaces of the two punching lower wedge blocks 38 with the same structure are each provided with two spring grooves for placing the return spring. Four return spring blocks 50 with the same structure are fixed on the punching lower die base 36, and the return spring blocks 50 limit the return spring in the spring groove of the punching lower wedge block 38; the punching lower die base 36 is U-shaped, and a blanking hole is provided in the middle of the punching lower die base 36. A rectangular guide groove is provided on the left and right inner sides of the punching lower die base 36, and a rectangular guide groove is provided on the left and right sides of the punching lower wedge block 38. The rectangular guide grooves on the left and right sides of the punching lower wedge block 38 The connection between the guide rail and the rectangular guide rail grooves on the left and right inner sides of the punching lower die base 36 is a clearance fit, and the punching lower wedge block 38 can move forward and backward in the guide rail groove of the punching lower die base 36 through the rectangular guide rail connection; the punching lower wedge block 38 is fixedly connected to the punching rivet fixing plate 39 by bolts, and the large hole rivet 47 and the small hole rivet 48 are respectively fixedly connected to the upper and lower countersunk holes of the punching rivet fixing plate 39; the punching die 41 is a hollow prism type, and the front and rear sides of the punching die 41 are respectively provided with four convex die locating pins 42 of the same structure, and the front and rear sides of the punching die 41 are respectively provided with upper and lower die holes, and the upper and lower die holes are respectively connected to the large hole rivet 47 and the small hole rivet 48 constitutes the convex and concave dies for the transverse punching holes of the pin-joined chain bending chain plate, and the punching concave die 41 is fixed to the punching lower die seat 36 by bolts; there are two workpiece side pressure plates 40, and the two workpiece side pressure plates 40 with the same structure are located at the front and rear sides of the punching concave die 41, and the workpiece side pressure plate 40 is provided with two upper and lower through holes, and the large hole punch 47 and the small hole punch 48 can pass through the through holes on the workpiece side pressure plate 40 to complete the punching process of the workpiece; the workpiece side pressure plate 40 is connected to the punching rivet fixing plate 39 through four spring pull rods, and each spring pull rod is provided with a push spring. During the punching process, the workpiece side pressure plate 40 can move axially along the spring pull rod under the action of the push spring;A through hole for installing the punching ejector 49 is respectively provided on the front and rear sides of the blanking hole of the punching lower die seat 36. The multi-station mold lower template 5 is provided with a blanking hole and an ejector spring groove for discharging waste chips and installing an ejector spring. Under the action of the ejector spring, the punching ejector 49 can move up and down in the through hole of the punching lower die seat 36; the upper die wedge block 43 has an inclined surface of 45 degrees, and a tenon is provided at the tail end of the upper die wedge block 43. The tenon of the upper die wedge block 43 is located at the punching upper template 4 4, there are two upper die wedge blocks 43, and the two upper die wedge blocks 43 with the same structure are fixed to the front and rear sides of the punching upper die plate 44 by bolts; the punching workpiece pressing plate 45 is connected to the punching upper die plate 44 by two spring pull rods, each spring pull rod is provided with a push spring, and during the punching process, the punching workpiece pressing plate 45 can move up and down along the spring pull rod under the action of the push spring; the punching upper die plate 44 is fixed to the multi-station die upper die plate 9 by bolts. ; Description of the drawings:

[0009] Figure 1 It is a structural schematic diagram of a multi-station stamping progressive die for automated production of bent chain plates of the present invention;

[0010] Figure 2 It is a schematic diagram of the bending mold core structure in the present invention;

[0011] Figure 3 It is a schematic diagram of the molding core structure in the present invention;

[0012] Figure 4 It is a schematic diagram of the punching die core structure in the present invention;

[0013] Figure 5 for Figure 4 Schematic diagram of the top view of the structure in the AA half section;

[0014] Figure 6 It is a schematic diagram of the shape change of the workpiece after the core punching process at each station in the present invention.

[0015] In the figure: 1: multi-station mold bottom plate, 2: nitrogen spring, 3: nitrogen spring pad, 4: support plate, 5: multi-station mold lower template, 6: bending mold core, 7: forming mold core, 8: punching mold core, 9: multi-station mold upper template, 10: mold handle, 11: guide column upper base, 12: guide sleeve, 13: guide column, 14: guide column base, 15: bending upper pad, 16: bending upper mold fixing plate, 17: bending upper mold, 18: bending ejector, 19: blanking parts, 20: bending positioning column, 21: bending lower mold fixing plate, 22: bending lower mold pad, 23: bending lower mold bottom plate, 24: bending lower mold, 25: forming upper pad, 26: forming upper mold fixing plate, 27 : Forming upper die, 28: Ejector for forming punch, 29: Bending part, 30: Forming lower floating block, 31: Forming lower die, 32: Forming positioning column, 33: Forming lower die fixing plate, 34: Forming lower die lower pad, 35: Forming lower die bottom plate, 36: Punching lower die seat, 37: Punching side baffle, 38: Punching lower wedge block, 39: Punching rivet fixing plate, 40: Workpiece side pressure plate, 41: Punching die, 42: Punch positioning pin, 43: Upper die wedge block, 44: Punching upper template, 45: Punching workpiece pressure plate, 46: Forming part, 47: Large hole rivet, 48: Small hole rivet, 49: Ejector for punching, 50: Return spring block, 51: Punching part. Specific implementation method:

[0016] The present invention provides a multi-station stamping progressive die for the automated production of bent chain plates, comprising a bending die core 6, a forming die core 7, and a punching die core 8, which can complete the three-station stamping processing of bending, forming, and punching of the bent chain plate workpiece in one stroke of the punch press.

[0017] Its working principle is: the bending die core 6, the forming die core 7, and the punching die core 8 used for the automatic processing of the bent link plate are arranged on the multi-station stamping progressive die in sequence starting from the feed end. When the multi-station stamping progressive die is working, the automatic feeding device controlled by the PLC places the blanking part 19 on the bending die core 6, the bending part 29 on the forming die core 7, and the forming part 46 on the punching die core 8, and then the punch press punches once. The bending upper die 17 and the bending lower die 24 in the bending die core 6 are punched to punch the blanking part 19 into the bending part 29. When the punch press returns, the bending ejector pin 18 loosens the bending part 29 under the action of the ejector spring. The upper forming die 27 in the forming die core 7 moves downward with the punch press, and is punched with the lower forming floating block 30 and the lower forming die 31 to punch the bending part 29 into the forming part 46. When the punch press returns, the ejector pin 28 of the forming punch pushes the forming part 46 away from the upper forming die 27 under the action of the ejector spring, and the lower forming floating block 30 returns to the initial position under the action of the nitrogen spring 2. In the punching die core 8, the punching workpiece pressing plate 45 first contacts the forming part 46 with the movement of the punch press stroke, and presses the forming part 46 downward, and at the same time, the punching ejector pin 49 is pressed downward by the forming part 46. Then the upper die wedge block 43 contacts the punching lower wedge block 38, the punch press continues to move downward, the punching lower wedge block 38 moves toward the middle, the return spring between the punching lower wedge block 38 and the return spring stopper 50 is compressed, and the workpiece side pressure plate 40 presses the molded part 46 to prevent the molded part 46 from deviating from the position during the punching process. Then the large hole punch 47 and the small hole punch 48 contact the workpiece through the through hole on the workpiece side pressure plate 40, punching the molded part 46 into the punching part 51, and the punching waste falls into the waste hole of the punching die 41, and is discharged through the punching lower die seat 36, the multi-station die lower template 5 and the blanking hole of the multi-station die bottom plate 1, and the punch stroke ends. When the punching machine slide returns, the upper die wedge block 43 moves upward, and under the action of the return spring, the punching lower wedge block 38 moves outward, driving the large hole punching nail 47 and the small hole punching nail 48 back to the initial position, and the punching ejector 49 loosens the punching piece 51 on the punching die 41 under the action of the ejector spring. After the punching machine returns to the initial position, the automatic feeding device sends the workpiece on the previous station to the next station for stamping processing. Finally, the punching piece 51 is taken out by the automatic feeding device and placed in the finished product frame, completing the multi-station stamping processing of the bent link plate.

Claims

1. A multi-station stamping progressive die for the automated production of bent link plates, characterized in that: The multi-station stamping progressive die comprises a multi-station die bottom plate (1), a nitrogen spring (2), a nitrogen spring pad (3), a support plate (4), a multi-station die bottom plate (5), a bending die core (6), a forming die core (7), a punching die core (8), a multi-station die top plate (9), a die handle (10) and two guide mechanisms with the same structure; the bending die core (6), the forming die core (7) and the punching die core (8) are arranged in sequence between the multi-station die bottom plate (5) and the multi-station die top plate (9); the support plate (4) has four The support plate (4) is fixedly connected to the multi-station mold base plate (1) and the multi-station mold lower template (5) by bolts, and four support plates (4) with the same structure are evenly distributed on the multi-station mold base plate (1); a flange is provided at the bottom of the mold handle (10), and the multi-station mold upper template (9) is provided with a mold handle hole, and the mold handle (10) and the multi-station mold upper template (9) are clearance-matched; the two guide mechanisms with the same structure are symmetrically arranged on the left and right sides of the multi-station mold lower template (5) and the multi-station mold upper template (9). The guide mechanism located on the right side comprises a guide post upper mounting seat (11), a guide sleeve (12), a guide post (13) and a guide post base (14); the guide post upper mounting seat (11) is fixed to the right side of the multi-station mold upper template (9) by bolts; the guide post (13) is fixed to the right side of the multi-station mold lower template (5) by the guide post base (14); a coil spring is sleeved on the guide post (13); the guide sleeve (12) is loosely sleeved on the guide post (13); the guide sleeve (12) and the guide post (13) are clearance-matched; the bending mold core (6) comprises a bending upper pad (15), a bending upper die fixing plate (16), a bending upper die (17), a bending ejector pin (18), a bending positioning column (20), a bending lower die fixing plate (21), a bending lower die pad (22), a bending lower die bottom plate (23) and a bending lower die (24), wherein the bending lower die (24), the bending lower die fixing plate (21), the bending lower die pad (22) and the bending lower die bottom plate (23) are sequentially fixedly connected by bolts, and the bending lower die bottom plate (23) is fixed to the multi-station die bottom plate (5) by bolts;There are six bending positioning columns (20), and the six bending positioning columns (20) with the same structure are arranged on the front and rear sides of the bending lower mold fixing plate (21) to determine the bending station, and the blanking parts are placed at the bending station. The bending positioning columns (20) are connected with the bending lower mold fixing plate (21) by transition fit. The bending upper pad plate (15), the bending upper mold fixing plate (16) and the bending upper mold (17) are successively connected by bolts. The bending upper pad plate (15) is fixed to the multi-station mold upper mold plate (9) by bolts. The bending upper mold (17) and the bending lower mold (24) are connected to the bending lower mold plate (9) by bolts. Each of the two molding molds is provided with two ejection spring grooves, and the bending ejector pin (18) can move up and down in the ejection spring groove under the action of the ejection spring; the molding mold core (7) comprises a molding upper pad plate (25), a molding upper mold fixing plate (26), a molding upper mold (27), an ejector pin (28) for a molding punch, a molding lower floating block (30), a molding lower mold (31), a molding positioning column (32), a molding lower mold fixing plate (33), a molding lower mold lower pad plate (34) and a molding lower mold bottom plate (35); the molding lower floating block (30) is supported by the nitrogen spring (2), and the nitrogen spring (2) is supported by the nitrogen spring The backing plate (3) is fixed on the multi-station mold bottom plate (1), there are two molding lower molds (31), and the molding lower molds (31) are arranged on the front and rear sides of the molding lower floating block (30). The molding lower mold (31), the molding lower mold fixing plate (33), the molding lower mold bottom backing plate (34) and the molding lower mold bottom plate (35) are sequentially fixed by bolts, and the molding lower mold bottom plate (35) is fixed to the multi-station mold bottom template (5) by bolts. There are ten molding positioning columns (32), and the ten molding positioning columns (32) with the same structure are evenly distributed on the molding lower mold fixing plate (33). The plate (33) is surrounded by the molding positioning column (32) for determining the molding station, and the bent part is placed in the molding station; the molding positioning column (32) is connected to the molding lower mold fixing plate (33) by transition fit; the molding upper pad plate (25), the molding upper mold fixing plate (26) and the molding upper mold (27) are successively fixed by bolts, and the molding upper pad plate (25) is fixed to the multi-station mold upper template (9) by bolts; the molding upper mold (27) is provided with a ejector spring groove, and the molding punch ejector pin (28) can move up and down in the ejector spring groove under the action of the ejector spring;The punching die core (8) comprises a punching lower die base (36), a punching side baffle (37), a punching lower wedge block (38), a punching rivet fixing plate (39), a workpiece side pressure plate (40), a punching die (41), a punch positioning pin (42), an upper die wedge block (43), a punching upper template (44), a punching workpiece pressure plate (45), a large hole rivet (47), a small hole rivet (48), a punching ejector pin (49), and a return spring block (50). The punching lower die base (36) is fixed to the multi-station die lower template (5) by bolts. The punching side baffle (37) is L-shaped. There are two punching side baffles (37). Two punching side baffles (37) with the same structure are respectively fixed to the front and rear sides of the punching lower die seat (36) with bolts; the punching lower wedge block (38) is a right-angled trapezoidal block with a 45-degree inclined surface, there are two punching lower wedge blocks (38), the two punching lower wedge blocks (38) with the same structure are symmetrically arranged on the front and rear sides of the punching die (41), the bottom surfaces of the two punching lower wedge blocks (38) with the same structure are each provided with two spring grooves for placing a return spring, and four return spring blocks (50) with the same structure are fixed to the punching lower die seat (36), and the return spring blocks (50) limit the return spring in the The punching lower die seat (36) is in a U-shape, a blanking hole is provided in the middle of the punching lower die seat (36), the left and right inner side surfaces of the punching lower die seat (36) are respectively provided with rectangular guide grooves, the left and right side surfaces of the punching lower wedge block (38) are respectively provided with rectangular guide rails, the connection between the rectangular guide rails on the left and right side surfaces of the punching lower wedge block (38) and the rectangular guide rail grooves on the left and right inner side surfaces of the punching lower die seat (36) is a clearance fit, and the punching lower wedge block (38) can move forward and backward in the guide rail groove of the punching lower die seat (36) through the rectangular guide rail connection; the punching lower wedge block (38) is fixed to the punching pin The plate (39) is fixedly connected by bolts, and the large hole punching pin (47) and the small hole punching pin (48) are respectively fixedly connected in the upper and lower countersunk holes of the punching pin fixing plate (39); the punching die (41) is a hollow prism type, and the front and rear sides of the punching die (41) are respectively provided with four convex die positioning pins (42) of the same structure, and the front and rear sides of the punching die (41) are respectively provided with two upper and lower die holes, and the upper and lower two die holes respectively form the convex and concave dies of the horizontal punching holes of the pin-joined chain bending chain plate with the large hole punching pin (47) and the small hole punching pin (48), and the punching die (41) is fixed to the punching lower die base (36) by bolts;There are two workpiece side pressure plates (40), and the two workpiece side pressure plates (40) with the same structure are located on the front and rear sides of the punching die (41). The workpiece side pressure plate (40) is provided with two upper and lower through holes, and the large hole punching pin (47) and the small hole punching pin (48) can pass through the through holes on the workpiece side pressure plate (40) to complete the punching process of the workpiece; the workpiece side pressure plate (40) is connected to the punching pin fixing plate (39) through four spring pull rods, and each spring pull rod is provided with a push spring. During the punching process, the workpiece side pressure plate (40) can move axially along the spring pull rod under the action of the push spring; the front and rear sides of the blanking hole of the punching lower die seat (36) are respectively provided with a through hole for installing the punching ejector pin (49), and the multi-station mold lower template (5) is provided with a blanking hole and an ejector spring groove for discharging waste chips and installing Ejector spring, under the action of the ejector spring, the punching ejector pin (49) can move up and down in the through hole of the punching lower die seat (36); the upper die wedge block (43) has an inclined surface of 45 degrees, and the tail end of the upper die wedge block (43) is provided with a tenon, and the tenon of the upper die wedge block (43) is located in the tenon groove of the punching upper template (44), and there are two upper die wedge blocks (43), and the two upper die wedge blocks (43) with the same structure are fixed to the front and rear sides of the punching upper template (44) by bolts; the punching workpiece pressing plate (45) is connected to the punching upper template (44) by two spring pull rods, and each spring pull rod is provided with a push spring. During the punching process, the punching workpiece pressing plate (45) can move up and down along the spring pull rod under the action of the push spring; the punching upper template (44) is fixed to the multi-station mold upper template (9) by bolts. ;

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