CN214290266U

CN214290266U - Multi-station stamping die for automatic production of flat-top chain plate

Info

Publication number: CN214290266U
Application number: CN202120237817.6U
Authority: CN
Inventors: 汪永明; 刘述庆; 李偎; 芮艳青; 谈莉斌
Original assignee: Anhui University of Technology AHUT
Current assignee: Anhui University of Technology AHUT
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-09-28
Anticipated expiration: 2031-01-26

Abstract

The utility model discloses a multistation stamping die for flat top link joint automated production belongs to machining technical field. The stamping die comprises an upper die plate, a lower die plate, a pre-bending die core, a U-bending die core, a rolling die core, a guide pillar and a guide sleeve. The working principle is as follows: a pre-bending mold core, a U-shaped bending mold core and a rounding mold core for the automatic production of a flat-top chain plate are sequentially arranged in a multi-station stamping die from a feeding end of a punch press, and during stamping, an automatic feeding device controlled by a PLC (programmable logic controller) sequentially sends a workpiece to three stations of the pre-bending mold core, the U-shaped bending mold core and the rounding mold core, so that stamping processing of the three stations of pre-bending, U-shaped bending and rounding of the workpiece can be simultaneously completed in one stroke of the punch press, the labor intensity of operators is favorably reduced, and the stamping processing efficiency can be effectively improved.

Description

Multi-station stamping die for automatic production of flat-top chain plate

The technical field is as follows:

the utility model belongs to the technical field of machining, concretely relates to a multistation stamping die for flat top link joint automated production, this multistation stamping die can once the punching press accomplish to the prebending of flat top link joint, the curved and edge rolling of U, can be applied to the automated production of flat top link joint, alleviate operation workman's intensity of labour to can effectively improve machining efficiency.

Background art:

the flat-top chain plate is an important part of a stainless steel flat-top chain, and the stamping process generally needs four procedures of blanking, pre-bending, U-bending and edge rolling. At present, a single-station stamping mode is still adopted for processing a flat-top chain plate, namely, each process needs to be provided with a press, so that the labor intensity of operators is high, and the potential safety hazard is high. The utility model provides a multistation stamping die for flat top link joint automated production, this multistation stamping die comprises three sets of mold cores of preflex, U bend and edge rolling, can accomplish the stamping process of preflex, U bend and the three station of edge rolling in the stroke of punch press, is favorable to alleviateing operation workman's intensity of labour to can effectively improve stamping process efficiency.

The invention content is as follows:

an object of the utility model is to provide a multistation stamping die for automatic production of flat-top link joint, this multistation stamping die comprises three sets of mold cores of preflex, U bend and edge rolling, can accomplish the stamping process to the three station of flat-top link joint preflex, U bend and edge rolling in the stroke of punch press.

The utility model provides a pair of a multistation stamping die for flat top link joint automated production includes cope match-plate pattern 1, lower bolster 2, pre-bending mold core 3, U curved die core 4, edge rolling mold core 5, guide pillar 6 and guide pin bushing 7. The pre-bending mold core 3, the U-bending mold core 4 and the rounding mold core 5 are sequentially arranged between the upper template 1 and the lower template 2 from left to right; the stamping die is characterized in that the number of the guide columns 6 and the guide sleeves 7 is two, the guide columns and the guide sleeves are symmetrically arranged on the rear side of the stamping die, mounting holes matched with the guide sleeves 7 are formed in the rear side of the upper die plate 1, mounting holes matched with the guide columns 6 are formed in the rear side of the lower die plate 2, the guide sleeves 7 are in interference fit with the mounting holes of the upper die plate 1, the guide columns 6 are in interference fit with the mounting holes of the lower die plate 2, and the guide columns 6 are in clearance fit with the guide sleeves 7.

The pre-bending mold core 3 comprises a first upper backing plate 8, a first upper mold base 9, a first upper mold 10, a first small roller 11, a first pin shaft 12, a first lower mold 13, a first lower backing plate 14, a first floating positioning block 15, a first floating ejector pin 16, a first spring 17, a second pin shaft 18 and a first large roller 19; the first upper padding plate 8, the first upper die holder 9 and the first upper die 10 are fixedly connected through screws in sequence, the first upper padding plate 8 is fixed on the upper die plate 1 through screws, and arc working faces required by workpiece pre-bending are arranged on the left side and the right side of the lower end face of the first upper die 10.

The first lower die 13 is fixedly connected with the first lower backing plate 14 through screws, and the first lower backing plate 14 is fixed on the lower template 2 through screws; a first U-shaped notch is formed in the middle of the first lower die 13, a plurality of roller grooves and pin shaft holes are formed in the left side and the right side of the first U-shaped notch, two pin shaft holes are formed in the bottom of the first U-shaped notch, the first small roller 11 and the first large roller 19 are respectively sleeved on the first pin shaft 12 and the second pin shaft 18 in an empty mode, and the first small roller 11 and the first large roller 19 are respectively installed in the left roller groove and the right roller groove of the first U-shaped notch; the upper end face of the first floating positioning block 15 is provided with a first positioning groove for placing a blanking piece 47, the shape and size of the first positioning groove are consistent with those of the blanking piece 47, the lower end face of the first floating positioning block 15 is provided with two pin holes, and the upper end face of the first lower backing plate 14 is provided with two step holes; two first floating ejector pins 16 are arranged, a limit step is arranged in the middle of each first floating ejector pin 16, the upper half shaft section of the first floating knock pin 16 sequentially passes through the pin hole of the first lower die 13 and the pin hole of the first floating positioning block 15, the first floating knock pin 16 is connected with the pin hole of the first floating positioning block 15 in an interference fit manner, the first floating knock pin 16 is in clearance fit with the pin hole of the first lower die 13, the first spring 17 is sleeved on the lower half shaft section of the first floating knock pin 16, the limit step of the first floating knock pin 16 and its lower half shaft segment are disposed in the stepped hole of the first lower backing plate 14 together with the first spring 17, the first floating positioning block 15 is supported by two first floating ejector pins 16, and the first floating positioning block 15 can float up and down under the action of the first spring 17.

The U-shaped bending die core 4 comprises a second upper backing plate 20, a second upper die holder 21, a second upper die 22, a second small roller 23, a third pin shaft 24, a second lower die 25, a second lower backing plate 26, a second floating positioning block 27, a second floating ejector pin 28, a second spring 29, a fourth pin shaft 30 and a second big roller 31; the second upper backing plate 20, the second upper die holder 21 and the second upper die 22 are fixedly connected through screws in sequence, the second upper backing plate 20 is fixed on the upper die plate 1 through screws, and arc working faces required by U bending of a workpiece are arranged on the left side and the right side of the lower end face of the second upper die 22.

The second lower die 25 is fixedly connected with the second lower backing plate 26 through screws, the second lower backing plate 26 is fixed on the lower die plate 2 through screws, a second U-shaped notch is formed in the middle of the second lower die 25, a plurality of roller grooves and pin shaft holes are formed in the left side and the right side of the second U-shaped notch, two pin shaft holes are formed in the bottom of the second U-shaped notch, the second small roller 23 and the second large roller 31 are respectively sleeved on the third pin shaft 24 and the fourth pin shaft 30 in a hollow mode, and the second small roller 23 and the second large roller 31 are respectively installed in the left roller groove and the right roller groove of the second U-shaped notch; a second positioning groove for placing the pre-bending piece 48 is formed in the upper end face of the second floating positioning block 27, the shape and size of the second positioning groove are consistent with those of the pre-bending piece 48, two pin holes are formed in the lower end face of the second floating positioning block 27, and two step holes are formed in the upper end face of the second lower base plate 26; two second floating knock pins 28 are provided, a limit step is arranged in the middle of the second floating knock pin 28, the upper half shaft section of the second floating knock pin 28 passes through the pin hole of the second lower die 25 and the pin hole of the second floating positioning block 27 in sequence, the second floating knock pin 28 is connected with the pin hole of the second floating positioning block 27 in an interference fit manner, the second floating knock pin 28 is in clearance fit with the pin hole of the second lower die 25, the second spring 29 is sleeved on the lower half shaft section of the second floating knock pin 28, the limit step of the second floating knock pin 28 and its lower half shaft segment are disposed in the stepped hole of the second lower back plate 26 together with the second spring 29, the second floating positioning block 27 is supported by two second floating knock pins 28, and the second floating positioning block 27 can float up and down under the action of the second spring 29.

The edge rolling mold core 5 comprises a third upper backing plate 32, a T-shaped upper mold seat 33, a right upper mold 34, a left upper mold 35, a first positioning block 36, a left lower mold 37, a second positioning block 38, a third lower mold seat 39, a third lower backing plate 40, a right lower mold 41, a hole correcting rod guide block 42, a hole correcting rod 43, an L-shaped support 44, a hole correcting rod fixing block 45 and an air cylinder 46; the lower end surfaces of the left upper die 35 and the right upper die 34 are respectively provided with a concave arc working surface required for rounding a workpiece pin hole and a hinge hole, the left upper die 35 and the right upper die 34 are fixedly connected to the left side and the right side of the T-shaped upper die holder 33 through screws, the T-shaped upper die holder 33 is fixedly connected with the third upper backing plate 32 through screws, and the third upper backing plate 32 is fixed on the upper die plate 1 through screws; the third lower die holder 39 is fixedly connected with the third lower backing plate 40 through screws, and the third lower backing plate 40 is fixed on the lower die plate 2 through screws; the third lower die base 39 is of a T-shaped structure with steps at the front and the rear, the left lower die 37 and the right lower die 41 are fixedly connected to the left side and the right side of the third lower die base 39 respectively through screws, and the upper end surfaces of the left lower die 37 and the right lower die 41 are respectively provided with a herringbone cambered surface required for rounding a workpiece pin hole and a reaming hole; the second positioning block 38 and the first positioning block 36 are fixedly connected to the front end and the rear end of the middle step surface of the third lower die base 39 through screws respectively, the L-shaped support 44 is located at the rear side of the third lower backing plate 40, and the L-shaped support 44 is fixed on the lower die plate 2 through screws; two guide holes are formed in the hole correcting rod guide block 42, and the hole correcting rod guide block 42 is fixedly connected to the front end of the upper surface of the L-shaped support 44 through a screw; be equipped with through-hole and a plurality of screw thread mounting hole that supply the piston rod to pass on the perpendicular side of L type support 44, cylinder 46 through the flange with the screw thread mounting hole of the perpendicular side of L type support 44 links firmly, be equipped with on cylinder 46's the piston rod hole calibration stick fixed block 45, two parallels the one end of hole calibration stick 43 links firmly on hole calibration stick fixed block 45, two the other end of hole calibration stick 43 passes respectively the guiding hole on hole calibration stick guiding block 42 under the effect of cylinder 46 piston rod, two hole calibration stick 43 can reach forward second locating piece 38.

Description of the drawings:

FIG. 1: the structure schematic diagram of the multi-station stamping die for the automatic production of the flat-top chain plate of the utility model is shown;

FIG. 2: is a schematic structural view of the pre-bending mold core in the utility model;

FIG. 3: is a schematic structural view of a U-shaped bending die core in the utility model;

FIG. 4: is a schematic structural view of the rolling mold core in the utility model;

FIG. 5: do the utility model provides a shape change schematic diagram of work piece behind each station mold core stamping process.

In the figure: 1: mounting a template; 2: a lower template; 3: pre-bending the mold core; 4: a U-shaped mould core; 5: rolling the round mold core; 6: a guide post; 7: a guide sleeve; 8: a first upper backing plate; 9: a first upper die holder; 10: a first upper die; 11: a first small roller; 12: a first pin shaft; 13: a first lower die; 14: a first lower backing plate; 15: a first floating positioning block; 16: a first floating knock pin; 17: a first spring; 18: a second pin shaft; 19: a first large roller; 20: a second upper backing plate; 21: a second upper die holder; 22: a second upper die; 23: a second small roller; 24: a third pin shaft; 25: a second lower die; 26: a second lower backing plate; 27: a second floating positioning block; 28: a second floating knock pin; 29: a second spring; 30: a fourth pin shaft; 31: a second large roller; 32: a third upper backing plate; 33: a T-shaped upper die holder; 34: a right upper die; 35: a left upper die; 36: a first positioning block; 37: a left lower die; 38: a second positioning block; 39: a third lower die holder; 40: a third lower backing plate; 41: a right lower die; 42: a hole correcting rod guide block; 43: a hole correcting rod; 44: an L-shaped support; 45: a hole correcting rod fixing block; 46: a cylinder; 47: a blanking member; 48: pre-bending the part; 49: a U-bend; 50: and (4) rolling the round piece.

The specific implementation mode is as follows:

the utility model provides a pair of multistation stamping die for automatic production of flat-top link joint, include pre-bending mold core 3, U curved mold core 4, edge rolling mold core 5, guide pillar 6, guide pin bushing 7 can accomplish the punching press processing to the pre-bending of flat-top link joint work piece, the curved, the three station of edge rolling in the stroke of punch press.

The working principle is as follows: the pre-bending die core 3, the U-shaped bending die core 4 and the edge rolling die core 5 for automatic stamping of the flat-top chain plate are sequentially arranged on the multi-station stamping die from the feeding end of a punch. The utility model discloses multistation stamping die's concrete working procedure as follows:

(1) when the multi-station stamping die works, the automatic feeding device controlled by the PLC is used for placing the blanking part 47 on the pre-bending die core 3, placing the pre-bending part 48 on the U-bending die core 4 and placing the U-bending part 49 on the rolling die core 5.

(2) Then the punch press starts to punch downwards, and the punching work of the following three stations is completed simultaneously: firstly, the first upper die 10 in the pre-bending die core 3 moves downwards along with a punch press, and together with the first floating positioning block 15, the first small roller 11 and the first large roller 19, the blanking part 47 is punched into the pre-bending part 48; the second upper die 22 in the U-shaped bending die core 4 moves downwards along with the punch press, and together with the second floating positioning block 27, the second small roller 23 and the second large roller 31, the pre-bending piece 48 is punched into the U-shaped bending piece 49; the hole correcting rod 43 extends forward to the second positioning block 38 to contact under the action of the cylinder 46, and meanwhile, the right upper die 34 and the left upper die 35 in the rounding die core 5 move downward along with the punch press, and together with the right lower die 41 and the left lower die 37, the U-shaped bent part 49 is punched into the rounding part 50 (i.e., a finished flat-top chain plate part).

(3) When the punch returns, the reset work of the following three stations is completed simultaneously: the first floating positioning block 15 pushes the pre-bending piece 48 to the original position through the first floating ejector pin 16 under the action of the first spring 17; the second floating positioning block 27 jacks the U-shaped bent piece 49 to the original position through the second floating jacking pin 28 under the action of the second spring 29; and thirdly, the hole correcting rod 43 exits the punching station under the action of the air cylinder 46.

(4) After the punch press returns to the initial position, the automatic feeding device sequentially feeds the workpiece on the previous station to the next station for stamping, and meanwhile, the rounding piece 50 (i.e. the finished part of the flat-top chain plate) is taken out by the automatic feeding device and placed into the finished frame, so that a working cycle of multi-station stamping of the flat-top chain plate is completed.

Claims

1. A multi-station stamping die for automatic production of flat-top chain plates is characterized by comprising an upper template (1), a lower template (2), a pre-bending die core (3), a U-bending die core (4), a rounding die core (5), a guide post (6) and a guide sleeve (7); the pre-bending mold core (3), the U-bending mold core (4) and the rolling mold core (5) are sequentially arranged between the upper template (1) and the lower template (2) from left to right; the stamping die is characterized in that the number of the guide columns (6) and the guide sleeves (7) is two, the guide columns and the guide sleeves are symmetrically arranged on the rear side of the stamping die, mounting holes matched with the guide sleeves (7) are formed in the rear side of the upper die plate (1), mounting holes matched with the guide columns (6) are formed in the rear side of the lower die plate (2), the guide sleeves (7) are in interference fit with the mounting holes of the upper die plate (1), the guide columns (6) are in interference fit with the mounting holes of the lower die plate (2), and the guide columns (6) are in clearance fit with the guide sleeves (7); the pre-bending mold core (3) comprises a first upper backing plate (8), a first upper mold base (9), a first upper mold (10), a first small roller (11), a first pin shaft (12), a first lower mold (13), a first lower backing plate (14), a first floating positioning block (15), a first floating ejector pin (16), a first spring (17), a second pin shaft (18) and a first large roller (19); the first upper padding plate (8), the first upper die holder (9) and the first upper die (10) are fixedly connected in sequence through screws, the first upper padding plate (8) is fixed on the upper die plate (1) through screws, the left side and the right side of the lower end face of the first upper die (10) are provided with arc working faces required by workpiece pre-bending, the first lower die (13) is fixedly connected with the first lower padding plate (14) through screws, and the first lower padding plate (14) is fixed on the lower die plate (2) through screws; a first U-shaped notch is formed in the middle of the first lower die (13), a plurality of roller grooves and pin shaft holes are formed in the left side and the right side of the first U-shaped notch, two pin shaft holes are formed in the bottom of the first U-shaped notch, the first small roller (11) and the first large roller (19) are respectively sleeved on the first pin shaft (12) and the second pin shaft (18) in a hollow mode, and the first small roller (11) and the first large roller (19) are respectively installed in the left roller groove and the right roller groove of the first U-shaped notch; the upper end face of the first floating positioning block (15) is provided with a first positioning groove for placing a blanking piece (47), the shape and size of the first positioning groove are consistent with those of the blanking piece (47), the lower end face of the first floating positioning block (15) is provided with two pin holes, and the upper end face of the first lower backing plate (14) is provided with two step holes; the first floating ejector pin (16) is provided with two, a limiting step is arranged in the middle of the first floating ejector pin (16), the upper half shaft section of the first floating ejector pin (16) sequentially penetrates through the pin hole of the first lower die (13) and the pin hole of the first floating positioning block (15), the first floating ejector pin (16) is connected with the pin hole of the first floating positioning block (15) in an interference fit manner, the first floating ejector pin (16) is in clearance fit with the pin hole of the first lower die (13), the first spring (17) is sleeved on the lower half shaft section of the first floating ejector pin (16), the limiting step and the lower half shaft section of the first floating ejector pin (16) and the first spring (17) are arranged in the step hole of the first lower base plate (14) together, the first floating positioning block (15) is supported by the first floating ejector pin (16), the first floating positioning block (15) can float up and down under the action of the first spring (17); the U-shaped bending die core (4) comprises a second upper backing plate (20), a second upper die holder (21), a second upper die (22), a second small roller (23), a third pin shaft (24), a second lower die (25), a second lower backing plate (26), a second floating positioning block (27), a second floating ejector pin (28), a second spring (29), a fourth pin shaft (30) and a second large roller (31); the second upper backing plate (20), the second upper die holder (21) and the second upper die (22) are sequentially and fixedly connected through screws, the second upper backing plate (20) is fixed on the upper die plate (1) through screws, and arc working surfaces required by U bending of a workpiece are arranged on the left side and the right side of the lower end surface of the second upper die (22); the second lower die (25) is fixedly connected with the second lower backing plate (26) through screws, the second lower backing plate (26) is fixed on the lower die plate (2) through screws, a second U-shaped notch is formed in the middle of the second lower die (25), a plurality of roller grooves and pin shaft holes are formed in the left side and the right side of the second U-shaped notch, two pin shaft holes are formed in the bottom of the second U-shaped notch, the second small roller (23) and the second large roller (31) are respectively sleeved on the third pin shaft (24) and the fourth pin shaft (30) in an empty mode, and the second small roller (23) and the second large roller (31) are respectively installed in the left roller groove and the right roller groove of the second U-shaped notch; a second positioning groove for placing a pre-bending piece (48) is formed in the upper end face of the second floating positioning block (27), the shape and size of the second positioning groove are consistent with those of the pre-bending piece (48), two pin holes are formed in the lower end face of the second floating positioning block (27), and two step holes are formed in the upper end face of the second lower base plate (26); the second floating ejector pin (28) has two, a limit step is arranged in the middle of the second floating ejector pin (28), the upper half shaft section of the second floating ejector pin (28) sequentially passes through the pin hole of the second lower die (25) and the pin hole of the second floating positioning block (27), the second floating ejector pin (28) is connected with the pin hole of the second floating positioning block (27) in an interference fit manner, the second floating ejector pin (28) is in clearance fit with the pin hole of the second lower die (25), the second spring (29) is sleeved on the lower half shaft section of the second floating ejector pin (28), the limit step of the second floating ejector pin (28) and the lower half shaft section thereof are arranged in the step hole of the second lower backing plate (26) together with the second spring (29), the second floating positioning block (27) is supported by the second floating ejector pin (28), the second floating positioning block (27) can float up and down under the action of the second spring (29); the edge rolling die core (5) comprises a third upper backing plate (32), a T-shaped upper die holder (33), a right upper die (34), a left upper die (35), a first positioning block (36), a left lower die (37), a second positioning block (38), a third lower die holder (39), a third lower backing plate (40), a right lower die (41), a hole correcting rod guide block (42), a hole correcting rod (43), an L-shaped support (44), a hole correcting rod fixing block (45) and a cylinder (46); the lower end faces of the left upper die (35) and the right upper die (34) are respectively provided with concave arc working faces required for rounding a workpiece pin hole and a reaming hole, the left upper die (35) and the right upper die (34) are fixedly connected to the left side and the right side of the T-shaped upper die holder (33) through screws respectively, the T-shaped upper die holder (33) is fixedly connected with the third upper backing plate (32) through screws, and the third upper backing plate (32) is fixed on the upper die plate (1) through screws; the third lower die holder (39) is fixedly connected with the third lower backing plate (40) through screws, and the third lower backing plate (40) is fixed on the lower template (2) through screws; the third lower die seat (39) is of a T-shaped structure with steps at the front and the rear, the left lower die (37) and the right lower die (41) are fixedly connected to the left side and the right side of the third lower die seat (39) through screws respectively, and the upper end surfaces of the left lower die (37) and the right lower die (41) are provided with herringbone cambered surfaces required for rounding a workpiece pin hole and a reaming hole respectively; the second positioning block (38) and the first positioning block (36) are fixedly connected to the front end and the rear end of a middle step surface of the third lower die base (39) respectively through screws, the L-shaped support (44) is located on the rear side of the third lower backing plate (40), and the L-shaped support (44) is fixed on the lower die plate (2) through screws; two guide holes are formed in the hole correcting rod guide block (42), and the hole correcting rod guide block (42) is fixedly connected to the front end of the upper surface of the L-shaped support (44) through a screw; be equipped with through-hole and a plurality of screw thread mounting hole that supply the piston rod to walk on the perpendicular side of L type support (44), cylinder (46) through the flange with the screw thread mounting hole of the perpendicular side of L type support (44) links firmly, be equipped with on the piston rod of cylinder (46) school hole stick fixed block (45), two parallels the one end of school hole stick (43) links firmly on school hole stick fixed block (45), two the other end of school hole stick (43) passes respectively the guiding hole on school hole stick guiding block (42) under the effect of cylinder (46) piston rod, two school hole stick (43) can extend before to second locating piece (38).