CN210754613U - Tool structure of doffer - Google Patents

Abstract

The utility model relates to a hardware blanking processing technology field, more specifically, it relates to a tool structure of doffer, install between punching press mechanism and die holder, the tool structure includes lower bolster and lower mould backing plate, the lower mould backing plate sets firmly in the die holder, the lower bolster sets firmly in the lower mould backing plate; a first discharge chute penetrates through the lower die base plate in the vertical direction, a second discharge chute is formed in the lower die base, the first discharge chute is communicated with the second discharge chute, a placing groove is formed in the upper surface of the lower die plate, a positioning groove penetrates through the bottom of the placing groove, the top of the positioning groove is an insertion end for inserting a special-shaped piece, a first avoiding groove for avoiding a connecting part is formed in the wall of the positioning groove, and the bottom of the positioning groove is communicated with the top of the first discharge chute; the stamping mechanism is positioned right above the positioning groove and can move towards or away from the positioning groove. The utility model discloses make punching press mechanism and dysmorphism piece aim at the location better, guarantee that doffer is better to the blanking processing effect of dysmorphism piece.

Description

Tool structure of doffer

Technical Field

The utility model relates to a hardware blanking processing technology field, more specifically say, it relates to a doffer's tool structure.

Background

In the production process of automobiles, a plurality of hardware such as automobile connector terminals and the like are stamped by a stamping machine. As shown in fig. 1, the stamping part includes two profile pieces to be machined and a master batch fixedly connected with the profile pieces. The master batch comprises two first master batches, two second master batches, two third master batches, one fourth master batch and four connecting parts, the special-shaped piece is basically in a rectangular frame shape, and the special-shaped piece comprises four side faces; first masterbatch is rectangular form basically, and second masterbatch and third masterbatch are round bar shape basically, and the equal fixed connection in first masterbatch of one end of second masterbatch and third masterbatch, and first masterbatch, second masterbatch and third masterbatch enclose to close and are formed with the space that supplies dysmorphism to place, and first masterbatch, second masterbatch and third masterbatch pass through connecting portion and the three side fixed connection of dysmorphism piece respectively, and the fourth masterbatch passes through connecting portion and a remaining side fixed connection of dysmorphism piece.

The stamping parts generally need to be subjected to blanking processing, and the blanking device comprises an upper die base, an upper clamping plate, a lower die base plate for placing the stamping parts to be processed and a lower die base. The punch holder is fixed on the upper die base through a plurality of bolt, the fixed punching press piece that is provided with in punch holder department, the fixed handle that is used for driving upper die base and punch holder and reciprocates that is provided with on the upper die base, the blown down tank has been seted up on the die holder, the staff aims at the blown down tank of die holder with the dysmorphism piece of stamping workpiece earlier, rethread drive handle realizes driving upper die base and punch holder down and moves on next step, the punch holder drives the punching press piece and moves down, the punching press piece carries out the punching press separation with the master batch of stamping workpiece and dysmorphism piece, the dysmorphism piece that dashes down is the finished product.

In above-mentioned technique, the staff places the stamping workpiece on the die holder to aim at the punching press piece with the dysmorphism piece that the stamping workpiece needs the blanking, carry out the punching press blanking again on next step, but fix a position the inaccurate condition in location easily to dysmorphism piece through the manual work, when the manual work location is inaccurate, make punching press piece and dysmorphism take place the dislocation easily, this results in the effect of doffer to the blanking processing of dysmorphism piece relatively poor easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough of above-mentioned prior art, the utility model aims at providing a doffer's tool structure can make punching press mechanism and dysmorphism piece aim at the location to guarantee that the effect of doffer to the blanking processing of dysmorphism piece is better.

The above technical purpose of the present invention can be achieved by the following technical solutions: a jig structure of a blanking device is arranged between a stamping mechanism and a lower die base and comprises a lower die plate and a lower die base plate, wherein the lower die base plate is fixedly arranged on the lower die base, and the lower die plate is fixedly arranged on the lower die base plate; the lower die base plate is provided with a first discharge chute in a penetrating mode in the vertical direction, the lower die base is provided with a second discharge chute, the first discharge chute is communicated with the second discharge chute, the upper surface of the lower die plate is provided with a placing groove for placing a stamping part, the bottom of the placing groove is provided with a positioning groove for placing a special-shaped part in the vertical direction in a penetrating mode, the top of the positioning groove is an insertion end for inserting the special-shaped part, the bottom of the positioning groove is a discharge end, the wall, close to the insertion end, of the positioning groove is provided with a first avoiding groove for avoiding a connecting part fixedly connected with the side face of the special-shaped part, the bottom of the connecting part abuts against the bottom of the first avoiding groove, and a second master batch and a third master batch abut against the outer edge of the first avoiding groove; the groove wall of the positioning groove is abutted against the side surface of the special-shaped piece; the bottom of the positioning groove and the top of the first discharging groove are positioned on the same horizontal plane and communicated; the punching press mechanism is located directly over the constant head tank, the punching press mechanism can be along orientation or keep away from the direction removal of constant head tank, just the punching press mechanism can make the dysmorphism piece in the constant head tank separate with connecting portion.

By adopting the technical scheme, when the stamping mechanism does not perform blanking processing on the special-shaped piece in the positioning groove, the groove wall of the positioning groove is mutually abutted with the side surface of the special-shaped piece, so that the special-shaped piece is not easy to shift in the horizontal direction in the positioning groove, the connecting part is abutted with the groove bottom of the first avoiding groove, so that the special-shaped piece fixedly connected with the connecting part is not easy to move towards the direction in the first discharging groove, the special-shaped piece can be stably placed in the positioning groove, and meanwhile, the special-shaped piece can be accurately placed under the stamping mechanism; when blanking processing is required to be carried out on the stamping part, an operator firstly moves the stamping mechanism in the direction away from the positioning groove, so that enough space is reserved between the stamping mechanism and the lower template for the operator to insert the special-shaped part of the stamping part to be blanked into the positioning groove, the groove wall of the positioning groove is mutually abutted with the side surface of the special-shaped part at the moment, the connecting part fixedly connected with the side surface of the special-shaped part is positioned in the avoiding groove, the special-shaped part is positioned under the stamping mechanism at the moment, next, the operator drives the stamping mechanism to move towards the positioning groove until the stamping mechanism separates the special-shaped part from the connecting part, so that the special-shaped part is separated from the connecting part, and the special-shaped part falls out of the second discharge groove of the lower die holder after; to sum up, the utility model discloses can make punching press mechanism and dysmorphism piece aim at the location to guarantee that the effect of doffer to the blanking processing of dysmorphism piece is better.

Preferably, an accommodating groove is formed in the bottom of the first avoiding groove in the vertical direction, and the accommodating groove is communicated with the positioning groove; the punching knife is fixedly arranged in the accommodating groove, and the cutting edge of the punching knife is abutted to the bottom of the joint of the connecting part and the special-shaped piece.

Through adopting above-mentioned technical scheme, the cutting edge of die cutter is contradicted in the bottom of the junction of connecting portion and dysmorphism piece, carries out the in-process of blanking processing to dysmorphism piece at punching press mechanism, and punching press mechanism orders about the direction removal of dysmorphism piece toward first blown down tank, because the cutting edge of die cutter is contradicted in the bottom of the junction of connecting portion and dysmorphism piece all the time for it is easier to separate between connecting portion and the dysmorphism piece.

Preferably, a chip groove for discharging the fourth master batch is formed in the side surface of the lower template, the chip groove is communicated with the accommodating groove, and the bottom of the chip groove is obliquely arranged in a direction towards or away from the accommodating groove; when the dysmorphism piece is located the constant head tank, the connecting portion of fourth masterbatch is located the top of chip groove.

Through adopting above-mentioned technical scheme, after dysmorphism piece and connecting portion separation, connecting portion and fourth masterbatch discharge from the chip groove, set up like this and be convenient for the staff and get rid of the connecting portion on the fourth masterbatch and the fourth masterbatch on the lower bolster after carrying out blanking processing to a stamping workpiece.

Preferably, the thickness of the lower die plate ranges from 28 mm to 32mm, the ratio of the maximum depth of the placing groove to the thickness of the lower die plate ranges from 0.08 mm to 0.12, and the ratio of the maximum depth of the chip groove to the thickness of the lower die plate ranges from 0.75 mm to 0.8.

Through adopting above-mentioned technical scheme, be provided with like this and do benefit to the structural strength who guarantees the lower bolster.

Preferably, the included angle formed by the plane where the groove bottoms of the chip grooves are located and the upper surface of the lower template ranges from 29 degrees to 33 degrees.

By adopting the technical scheme, the included angle formed by the plane where the groove bottom of the chip groove is located and the upper surface of the lower template ranges from 29 degrees to 33 degrees, so that the fourth master batch and the connecting part are more smoothly discharged from the chip groove.

Preferably, the thickness of the lower die base ranges from 50 mm to 60mm, the ratio of the maximum depth of the second discharging groove to the thickness of the lower die base ranges from 0.65 to 0.70, and the included angle formed between the plane where the groove bottom of the second discharging groove is located and the upper surface of the lower die base ranges from 30 degrees to 32 degrees.

By adopting the technical scheme, the thickness range of the lower die holder is 50-60mm, so that the arrangement is favorable for ensuring the smoothness of the special-shaped piece discharged from the second discharge chute under the condition of ensuring the structural strength of the lower die holder.

Preferably, the punching mechanism comprises an upper die base, an upper clamp plate, two punching blocks and two guide pillars, the upper clamp plate is fixedly arranged on the upper die base, the punching blocks are located right above the positioning grooves, the upper ends of the punching blocks are fixedly arranged on the upper clamp plate, the lower ends of the punching blocks are used for blanking special-shaped parts, the upper ends of the guide pillars are fixedly arranged on the upper die base, the lower ends of the guide pillars sequentially penetrate through a lower die plate, a lower die base plate and a lower die base, and the guide pillars are connected with the lower die plate, the lower die base plate and the lower die base in a sliding mode.

Through adopting above-mentioned technical scheme, in-process to blanking processing is carried out to stamping piece, the staff makes the upper die base earlier, punch holder and punching press piece move toward the direction of keeping away from the lower bolster, the staff will treat the stamping piece of blanking this moment and place on the lower bolster, and make the dysmorphism piece of stamping piece place in the constant head tank, dysmorphism piece is located the punching press piece this moment under, on one step, the staff orders about the upper die base, punch holder and punching press piece move until the punching press piece carries out blanking processing to dysmorphism piece toward the direction of constant head tank, thereby realize that dysmorphism piece and connecting portion separate.

To sum up, the utility model discloses following beneficial effect has:

1. when the stamping mechanism does not perform blanking processing on the special-shaped piece in the positioning groove, the groove wall of the positioning groove is mutually abutted with the side face of the special-shaped piece, so that the special-shaped piece is not easy to shift in the horizontal direction in the positioning groove, the connecting part is abutted with the groove bottom of the first avoiding groove, so that the special-shaped piece fixedly connected with the connecting part is not easy to move towards the direction in the first discharging groove, and the special-shaped piece can be stably placed in the positioning groove; meanwhile, the special-shaped part can be accurately placed under the stamping mechanism, and the stamping mechanism and the special-shaped part can be aligned and positioned, so that the blanking effect of the blanking device on the special-shaped part is better;

2. the cutting edge of the stamping knife is abutted against the bottom of the joint of the connecting part and the special-shaped part, and the stamping mechanism drives the special-shaped part to move towards the direction of the first discharge chute in the blanking process of the stamping mechanism for the special-shaped part;

3. the thickness range of the lower die holder is between 50 mm and 60mm, so that the arrangement is favorable for improving the smoothness of the special-shaped piece when the special-shaped piece is discharged from the second discharge chute under the condition of ensuring the structural strength of the lower die holder.

Drawings

FIG. 1 is a schematic structural view of a stamping;

fig. 2 is a schematic structural view of a blanking device in an embodiment of the present invention;

FIG. 3 is a schematic structural view of a stamping part, a jig structure and a lower die holder in an embodiment of the present invention;

FIG. 4 is a schematic structural view of the jig structure and the lower die holder according to the embodiment of the present invention;

FIG. 5 is a schematic view showing an assembly relationship of the lower mold plate, the lower mold backing plate and the lower mold base in the embodiment of the present invention;

FIG. 6 is a top view of the lower template in an embodiment of the present invention;

FIG. 7 is a schematic view of the internal structure of the lower template in the embodiment of the present invention;

fig. 8 is a schematic view of the internal structure of the lower die holder in the embodiment of the present invention.

Reference numerals: 1. a special-shaped piece; 21. a first masterbatch; 22. a second masterbatch; 23. a third masterbatch; 24. a fourth masterbatch; 25. a connecting portion; 26. connecting blocks; 31. an upper die holder; 311. reserving a hole; 32. an upper splint; 33. stamping the blocks; 34. a guide post; 4. a lower template; 41. a placement groove; 411. positioning a groove; 412. a first avoiding groove; 413. a containing groove; 414. a chip groove; 415. a second avoiding groove; 42. a lower die base plate; 421. a first discharge chute; 5. a lower die holder; 51. a second discharge chute; 6. and (4) punching a cutter.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A jig structure of a blanking device is applied to blanking processing of a stamping part, referring to fig. 1, wherein the stamping part comprises two special-shaped pieces 1 required to be processed and a master batch fixedly connected with the special-shaped pieces 1. The master batches comprise two first master batches 21, two second master batches 22, two third master batches 23, one fourth master batch 24 and four connecting parts 25, the special-shaped piece 1 is basically in a rectangular frame shape, and the special-shaped piece 1 comprises four side surfaces; first masterbatch 21 is rectangular form basically, and second masterbatch 22 and third masterbatch 23 are round bar shape basically, and the equal fixed connection in first masterbatch 21 of one end of second masterbatch 22 and third masterbatch 23, and first masterbatch 21, second masterbatch 22 and third masterbatch 23 enclose to close and are formed with the space that supplies dysmorphism 1 to place, and first masterbatch 21, second masterbatch 22 and third masterbatch 23 respectively through connecting portion 25 and the three side fixed connection of dysmorphism 1, and fourth masterbatch 24 passes through connecting portion 25 and a remaining side fixed connection of dysmorphism 1.

Referring to fig. 2 and 3, the blanking device includes a frame (not shown), a driving member (not shown), a stamping mechanism, a jig structure, and a lower die base 5. The driving piece sets up in the frame, and the driving piece is used for driving upper die base 31 and punch holder 32 toward or keep away from the direction removal of constant head tank 411, and is more stable when making punching press mechanism reciprocate, is provided with the stop gear (not shown in the figure) that plays limiting displacement to upper die base 31 and punch holder 32 in the frame. Specifically, the stamping mechanism includes an upper die holder 31, an upper clamp plate 32, two stamping blocks 33, and two guide posts 34. In this embodiment, the upper die holder 31 is provided with a preformed hole 311 along the vertical direction in a penetrating manner, the driving member may be configured as a telescopic cylinder (not shown in the figure), a piston rod of the telescopic cylinder is fixedly connected with a connecting plate (not shown in the figure), and the connecting plate is in threaded connection with the preformed hole 311 through a bolt, so that the upper die holder 31 is fixedly connected with the piston rod of the telescopic cylinder. The upper clamp plate 32 is fixedly arranged on the upper die base 31, the upper end of the stamping block 33 is fixedly arranged on the upper clamp plate 32, and the lower end of the stamping block 33 is used for blanking the special-shaped part 1. The stamping block 33 is located right above the jig structure, the upper end of the guide pillar 34 is fixedly arranged on the upper die base 31, the lower end of the guide pillar 34 sequentially penetrates through the jig structure and the lower die base 5, and the guide pillar 34 is connected with the lower template 4, the lower die base plate 42 and the lower die base 5 in an up-and-down sliding manner.

Referring to fig. 4, 5 and 6, the jig structure includes a lower die plate 4 and a lower die pad 42. The lower die base plate 42 is fixedly arranged on the lower die base 5 through a plurality of bolts, and the lower die plate 4 is fixedly arranged on the lower die base plate 42 through a plurality of bolts. The lower die base plate 42 is provided with a first discharging groove 421 along the vertical direction in a penetrating manner, the lower die base 5 is provided with a second discharging groove 51, and the first discharging groove 421 and the second discharging groove 51 are aligned with each other and communicated with each other. The standing groove 41 that is used for placing the stamping workpiece is seted up to the upper surface of lower bolster 4, and is concrete, the first masterbatch 21 of stamping workpiece is placed in standing groove 41, and the part of first masterbatch 21 is contradicted in the cell wall of standing groove 41, make the first masterbatch 21 of stamping workpiece be difficult to take place the offset on lower bolster 4, the constant head tank 411 that is used for placing dysmorphism 1 is worn to be equipped with along vertical direction by the tank bottom of standing groove 41, the top of constant head tank 411 inserts the end for supplying dysmorphism 1 male, the bottom of constant head tank 411 is the discharge end. In order to enable the profiled element 1 to be inserted more easily into the positioning slot 411, the insertion end of the positioning slot 411 is provided with a guide surface which slopes towards the inside of the positioning slot 411. The groove wall of the positioning groove 411 close to the insertion end is provided with a first avoidance groove 412 for avoiding the connecting part 25 fixedly connected with the side surface of the special-shaped part 1, the bottom of the connecting part 25 abuts against the groove bottom of the first avoidance groove 412, and the second master batch 22, the third master batch 23 and the fourth master batch 24 abut against the outer edge of the first avoidance groove 412, so that the special-shaped part 1 is not easy to shift in the vertical direction. The groove wall of the positioning groove 411 and the side surface of the special-shaped piece 1 are mutually abutted, so that the special-shaped piece 1 is not easy to shift in the horizontal direction. The bottom of the positioning groove 411 and the top of the first discharging groove 421 are positioned on the same horizontal plane and communicated; punching press piece 33 is located the constant head tank 411 directly over, and under the effect of driving piece, punching press piece 33 can be along the direction removal towards or keep away from constant head tank 411, and punching press piece 33 can be partly towards in the constant head tank 411 for dysmorphism piece 1 in the constant head tank 411 separates with connecting portion 25, so that dysmorphism piece 1 separates with connecting portion 25.

Referring to fig. 4, the bottom of the first avoiding groove 412 is provided with an accommodating groove 413 along the vertical direction, and the accommodating groove 413 is communicated with the positioning groove 411; the punching knife 6 is fixedly arranged in the accommodating groove 413, and the cutting edge of the punching knife 6 is abutted against the bottom of the connecting part 25 and the special-shaped piece 1. The structural principle of the die cutter 6 is conventional in the art and will not be described in detail herein. In the process of blanking the special-shaped piece 1 by the stamping mechanism, the stamping mechanism drives the special-shaped piece 1 to move towards the first discharge chute 421, and the cutting edge of the stamping knife 6 always butts against the bottom of the joint of the connecting part 25 and the special-shaped piece 1, so that the connecting part 25 and the special-shaped piece 1 are more easily separated.

Referring to fig. 3, one side surface of the lower template 4 is provided with a second avoiding groove 415, the second avoiding groove 415 is used for avoiding the connecting block 26, and when the worker places the special-shaped piece 1 in the positioning groove 411, the connecting block 26 is located in the second avoiding groove 415. In the process of operating the blanking device by a worker, the worker generally stands on one side of the lower die holder 5 provided with the second avoiding groove 415, so that the worker can remove the fourth master batch 24 on the lower template 4 and the connecting part 25 on the fourth master batch 24 conveniently, a chip discharging groove 414 for discharging the fourth master batch 24 is formed in the side surface of the lower template 4, the chip discharging groove 414 is communicated with the accommodating groove 413, and the bottom of the chip discharging groove 414 is arranged in an inclined manner along the direction towards or away from the accommodating groove 413; when the profile 1 is located in the positioning groove 411, the connecting portion 25 of the fourth base material 24 is located above the chip groove 414. After the special-shaped part 1 is separated from the connecting part 25, a worker directly takes out the first master batch 21, the second master batch 22, the third master batch 23 and the connecting block 26 from the lower template 4, and the connecting part 25 and the fourth master batch 24 are discharged from the chip discharge groove 414, so that the worker can conveniently perform blanking processing on the next stamping part to be processed.

Referring to fig. 7, in order to ensure the structural strength of the lower template 4, the thickness of the lower template 4 is set to be a1, the thickness a1 of the lower template 4 ranges from 28 mm to 32mm, and in the embodiment, the size of a1 is 30 mm. The maximum depth of the placing groove 41 is set to a2, the ratio of the maximum depth a2 of the placing groove 41 to the thickness a1 of the lower template 4 is in the range of 0.08-0.12, and in the present embodiment, the ratio of the maximum depth a2 of the placing groove 41 to the thickness a1 of the lower template 4 is preferably 0.1. The maximum depth of the chip grooves 414 is set to be A3, and the ratio of the maximum depth A3 of the chip grooves 414 to the thickness A1 of the lower template 4 ranges from 0.75 to 0.8. In this embodiment, the ratio of the maximum depth A3 of the flutes 414 to the thickness a1 of the lower platen 4 is preferably 0.77.

Referring to fig. 7, in order to enable the fourth master batch 24 and the connecting portion 25 on the fourth master batch 24 to be discharged from the chip discharge groove 414 more smoothly, an included angle formed by a plane where the groove bottom of the chip discharge groove 414 is located and the upper surface of the lower template 4 ranges from 29 ° to 33 °, in this embodiment, an included angle formed by the plane where the groove bottom of the chip discharge groove 414 is located and the upper surface of the lower template 4 is set as B, and the value range of B is preferably 30 °.

Referring to fig. 8, two second discharging chutes 51 are provided on the lower die holder 5, and the discharging ports of the two second discharging chutes 51 are located on the same side surface of the lower die holder 5. In order to ensure the structural strength of the lower die holder 5, the thickness of the lower die holder 5 is C, the range of the thickness C of the lower die holder 5 is 50-60mm, and in this embodiment, the value of C is preferably 55 mm. The maximum depth of the second discharging chute 51 is set as C1, and the ratio of the maximum depth C1 of the second discharging chute 51 to the thickness C of the lower die holder 5 ranges from 0.65 to 0.70. An included angle formed between a plane where the groove bottom of the second discharging groove 51 is located and the upper surface of the lower die holder 5 is set to be D, the included angle D formed between the plane where the groove bottom of the second discharging groove 51 is located and the upper surface of the lower die holder 5 ranges from 30 degrees to 32 degrees, and in the embodiment, the included angle D preferably takes a value of 30 degrees.

The specific working process is as follows:

when blanking of the stamped part is needed, the driving part drives the stamping mechanism to move in the direction away from the positioning groove 411, so that enough space is reserved between the stamping mechanism and the lower template 4 for an operator to insert the special-shaped part 1 of the stamped part to be blanked into the positioning groove 411, next, the operator places the special-shaped part 1 into the positioning groove 411, the groove wall of the positioning groove 411 and the side surface of the special-shaped part 1 are mutually abutted, the connecting part 25 fixedly connected with the side surface of the special-shaped part 1 is positioned in the avoiding groove, and the special-shaped part 1 is positioned under the stamping block 33; next, the operator drives the stamping mechanism to move towards the positioning slot 411 until the stamping block 33 separates the special-shaped piece 1 from the connecting portion 25, and the special-shaped piece 1 falls out of the second discharging slot 51 of the lower die holder 5 after entering the first discharging slot 421, so as to realize discharging; the fourth material 24 and the connecting portion 25 of the fourth material 24 are discharged from the chip discharge groove 414, and the worker takes the first material 21, the second material 22, the third material 23, and the connecting block 26 out of the lower die plate 4. Next, the worker can place the next stamping part to be processed on the lower template 4 for the next blanking operation.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims (7)

1. The utility model provides a doffer's tool structure, characterized by: the jig structure is arranged between a punching mechanism and a lower die base (5), and comprises a lower die plate (4) and a lower die base plate (42), wherein the lower die base plate (42) is fixedly arranged on the lower die base (5), and the lower die plate (4) is fixedly arranged on the lower die base plate (42); the lower die base plate (42) is provided with a first discharge chute (421) in a penetrating manner in the vertical direction, the lower die base (5) is provided with a second discharge chute (51), the first discharge chute (421) is communicated with the second discharge chute (51), the upper surface of the lower die plate (4) is provided with a placing groove (41) for placing a stamping part, the bottom of the placing groove (41) is provided with a positioning groove (411) for placing a special-shaped part (1) in a penetrating manner in the vertical direction, the top of the positioning groove (411) is an insertion end for inserting the special-shaped part (1), the bottom of the positioning groove (411) is a discharge end, the groove wall of the positioning groove (411) close to the insertion end is provided with a first avoiding groove (412) for avoiding the connecting part (25) fixedly connected with the side of the special-shaped part (1), and the bottom of the connecting part (25) is arranged at the bottom of the first avoiding groove (412), the second master batch (22) and the third master batch (23) are abutted against the outer edge of the first avoiding groove (412); the groove wall of the positioning groove (411) is abutted against the side surface of the special-shaped piece (1); the bottom of the positioning groove (411) and the top of the first discharging groove (421) are positioned on the same horizontal plane and communicated; the punching mechanism is located right above the positioning groove (411), the punching mechanism can move towards or away from the positioning groove (411), and the punching mechanism can separate a special-shaped piece (1) in the positioning groove (411) from the connecting part (25).

2. The jig structure of the blanking device according to claim 1, wherein: an accommodating groove (413) is formed in the bottom of the first avoiding groove (412) along the vertical direction, and the accommodating groove (413) is communicated with the positioning groove (411); the punching knife (6) is fixedly arranged in the accommodating groove (413), and the cutting edge of the punching knife (6) is abutted to the bottom of the joint of the connecting part (25) and the special-shaped piece (1).

3. The jig structure of the blanking device according to claim 2, wherein: a chip groove (414) for discharging a fourth master batch (24) is formed in the side surface of the lower template (4), the chip groove (414) is communicated with the accommodating groove (413), and the bottom of the chip groove (414) is obliquely arranged in a direction towards or away from the accommodating groove (413); when dysmorphism piece (1) is located constant head tank (411), connecting portion (25) of fourth masterbatch (24) are located the top of chip groove (414).

4. The jig structure of the blanking device according to claim 3, wherein: the thickness range of the lower template (4) is 28-32mm, the ratio of the maximum depth of the placing groove (41) to the thickness of the lower template (4) is 0.08-0.12, and the ratio of the maximum depth of the chip discharge groove (414) to the thickness of the lower template (4) is 0.75-0.8.

5. The jig structure of the blanking device according to claim 4, wherein: the included angle formed by the plane where the groove bottoms of the chip grooves (414) are located and the upper surface of the lower template (4) is within the range of 29-33 degrees.

6. The jig structure of the blanking device according to claim 1, wherein: the thickness range of the lower die holder (5) is 50-60mm, the ratio of the maximum depth of the second discharging groove (51) to the thickness of the lower die holder (5) is 0.65-0.70, and the included angle formed between the plane where the groove bottom of the second discharging groove (51) is located and the upper surface of the lower die holder (5) ranges from 30 degrees to 32 degrees.

7. The jig structure of the blanking device according to claim 1, wherein: the stamping mechanism comprises an upper die base (31), an upper clamp plate (32), two stamping blocks (33) and two guide pillars (34), wherein the upper clamp plate (32) is fixedly arranged on the upper die base (31), the stamping blocks (33) are located right above the positioning grooves (411), the upper ends of the stamping blocks (33) are fixedly arranged on the upper clamp plate (32), the lower ends of the stamping blocks (33) are used for blanking the special-shaped part (1), the upper ends of the guide pillars (34) are fixedly arranged on the upper die base (31), the lower ends of the guide pillars (34) sequentially penetrate through a lower die plate (4), a lower die base plate (42) and a lower die base (5), and the guide pillars (34) are connected with the lower die plate (4), the lower die base plate (42) and the lower die base (5) in a sliding mode up and down.

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