Special-shaped double-fork piece production line

Abstract

The utility model discloses a special-shaped double-fork piece production line, which belongs to the technical field of hot die forging, and comprises a forging die, the forging die comprises an upper die and a lower die, a pre-forging top die and a finish-forging top die are arranged on the upper die, a pre-forging bottom die and a finish-forging bottom die are arranged on the lower die, and when the upper die and the lower die are assembled, the pre-forging top die and the finish-forging bottom die are combined. A pre-forging cavity is defined by the pre-forging bottom die and the pre-forging top die, a finish-forging cavity is defined by the finish-forging top die and the finish-forging bottom die, pre-forging core dies are arranged on the pre-forging bottom die and the pre-forging top die, the pre-forging core dies are in a quadrangular frustum pyramid shape, finish-forging core dies are arranged on the finish-forging bottom die and the finish-forging top die, and the finish-forging core dies are in a quadrangular frustum pyramid shape. The finish forging core die comprises two arc-shaped blocks, the two arc-shaped blocks are both connected to the upper end face of the main core, the special-shaped double-fork piece production line further comprises a composite die, the forging quality can be improved, material waste is reduced, and meanwhile edge cutting, punching and shaping of forge pieces can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot die forging, in particular to a production line for special-shaped double-fork parts. Background Art

[0002] In order to ensure the final forging completion of the forging, the structure of the pre-forging die is usually designed to be as similar as possible to the final forging die structure, and the production quality of the forging is guaranteed by the double shaping.

[0003] like Figures 3-4 The illustrated special-shaped double fork member includes an annular body 19, with two pairs of short teeth 22 provided at the upper and lower ends of the annular body 19, respectively. The short teeth 22 and the annular body 19 are integrally forged, and the short teeth 22 transition to the outer wall of the annular body 19 via a stepped groove 20. The inner wall of the annular body 19 also has two quadrangular pyramid-like cavities 18 with convex arc surfaces 21 at both ends. The two quadrangular pyramid-like cavities 18 are vertically staggered, and the surface that connects to each other is the surface with the smallest area of ​​the two quadrangular pyramid-like cavities 18;

[0004] The convex arc surfaces 21 at both ends of the quadrangular pyramid cavity 18 narrow the space between the short teeth 22 and the annular body 19. When the blank passes through the transition section to fill the short teeth 22 of the mold, it encounters great resistance, which easily leads to incomplete filling, commonly known as "lack of meat". In order to ensure that the blank enters the short teeth 22 of the mold smoothly and avoid the lack of meat, it is necessary to add more blanks to the original basis. Although adding more blanks solves the lack of meat problem, during the processing, the material will first overflow from the edge and then fold up due to forging, and the overflowed material will also cause waste.

[0005] From the outside, after the special-shaped double fork is forged, the subsequent processing steps are different from those of ordinary forgings. There is also excess material on the inner wall of the annular body 19 that needs to be cut off. The existing flash cutting die driven by the press is difficult to achieve the removal of the excess material on the inner wall.

[0006] In view of the problems existing in the above-mentioned prior art, the present invention designs and manufactures a production line for special-shaped double-fork parts to overcome the above-mentioned defects. Utility Model Content

[0007] In order to solve the problems existing in the prior art, the utility model provides a production line for special-shaped double-fork parts, which can improve the forging quality, reduce material waste, and realize the trimming, punching and shaping of forgings.

[0008] In order to achieve the above object, the utility model adopts the technical scheme as follows: A special-shaped double fork production flow line, including forging die, the forging die includes upper die and lower die, the upper die is equipped with pre-forging top die and finish-forging top die, the lower die is equipped with pre-forging bottom die and finish-forging bottom die, when the upper die and the lower die close, the pre-forging bottom die and the pre-forging top die, the finish-forging top die and the finish-forging bottom die respectively enclose pre-forging cavity and finish-forging cavity,

[0009] The pre-forging bottom die and the pre-forging top die are all equipped with pre-forging core die in the pre-forging cavity, and the pre-forging core die is a quadrangular frustum corresponding to the special-shaped double fork;

[0010] The finish-forging bottom die and the finish-forging top die are all equipped with finish-forging core die in the finish-forging cavity, and the finish-forging core die includes main core and two arc blocks with the same shape as the pre-forging core die, the two arc blocks are both connected to the upper end face of the main core, the arc blocks are equipped with profiled surfaces, and the profiled surfaces and the end face of the main core jointly form profiled arc surfaces matching the outer convex arc surface;

[0011] It also includes a compound die capable of trimming, punching and shaping the forgings in the finish-forging cavity.

[0012] Preferably, the ends of the two pre-forging core dies close to each other can form a pre-storage area for storing billets when the upper die and the lower die are closed.

[0013] The ends of the two finish-forging core dies close to each other can form a square communication area when the upper die and the lower die are closed, and the square communication area corresponds to the pre-storage area one by one, and the billets flowing into the pre-storage area during pre-forging can enter the finish-forging cavity from the edges of the square communication area during finish-forging.

[0014] Preferably, the pre-forging cavity and the finish-forging cavity both include a main profiled cavity, two upper tooth cavities corresponding to the upper short teeth of the special-shaped double fork, and two lower tooth cavities corresponding to the lower short teeth of the special-shaped double fork.

[0015] The connection between the main profiled cavity and the lower tooth cavity and the upper tooth cavity on the pre-forging cavity is provided with an arc-shaped transition slope, and the connection between the main profiled cavity and the upper tooth cavity and the lower tooth cavity on the finish-forging cavity is provided with a profiled transition section matching the stepped groove of the special-shaped double fork.

[0016] Preferably, the pre-forging core die and the finish-forging core die close to the upper die are integrally formed with the pre-forging top die and the finish-forging top die respectively, and the pre-forging core die and the finish-forging core die close to the lower die are integrally formed with the pre-forging bottom die and the finish-forging bottom die respectively.

[0017] Preferably, the outer edge of the pre-forging bottom die and the final forging bottom die is provided with a flash groove, and the two flash grooves are arranged on the upper end surface of the lower die.

[0018] Preferably, the upper die and the lower die are respectively provided with a positioning groove and a positioning key capable of cooperating with each other.

[0019] Preferably, the composite die comprises a base and a press die connected with a press machine, the base is located below the press die, the press die is provided with a mounting frame and a punch matched with the shape of the square communication area, the upper end of the mounting frame is fixed on the press die, the lower end of the press die is provided with a trimming edge, the press die is provided with a through hole above the trimming edge, one end of the punch is mounted on the press die, and the other end of the punch extends out from the trimming edge through the through hole.

[0020] The base is provided with a profiling placing seat matched with the special-shaped double fork, the side wall of the profiling placing seat can be slidably matched with the trimming edge, and the profiling placing seat is provided with a blanking vertical hole slidably matched with the punch.

[0021] Preferably, the upper end of the punch is detachably mounted on the press die.

[0022] Preferably, the mounting frame comprises a mounting plate and two vertical plates, the upper end of the vertical plate is mounted on the press die, and the lower end of the vertical plate is connected with the mounting plate.

[0023] The vertical plate is provided with a sliding plate capable of sliding between the mounting plate and the press die, a nitrogen spring is connected between the sliding plate and the press die, the sliding plate is provided with a shaping die matched with the special-shaped double fork, and the lower end of the shaping die can extend out from the trimming edge through the through hole on the mounting plate.

[0024] The sliding plate and the shaping die are both provided with an extension hole slidably matched with the punch, and the punch can extend out from the lower end of the shaping die through the sliding plate.

[0025] Preferably, a material supporting plate is slidably mounted on the outer wall of the profiling placing seat, and a plurality of compression springs are directly connected between the material supporting plate and the base.

[0026] The utility model discloses a composite die and a press machine connected with the composite die.

[0027] 1、The utility model discloses a pre-forging core die is not provided with the part matched with the arc surface of the class four prism cavity, but simplifies the whole into four prism shape, increases the transition space of main body profiling cavity and upper tooth cavity lower tooth cavity, can make the blank more easily enter upper tooth cavity and lower tooth cavity and fill them, avoids the occurrence of conditions such as lack of meat, folding and the like.

[0028] 2. When the upper die and the lower die of the utility model are closed, a pre-storage area will be formed between the two pre-forging core dies. During pre-forging, excess billet will flow into the pre-storage area. The remaining material flowing into the area can be used as supplementary material for final forging, reducing billet overflow and material waste during pre-forging.

[0029] 3. When the upper die and the lower die of the utility model are closed, a square connecting area is formed between the two final forging core dies. The residual material left in the pre-storage area during pre-forging will enter the final forging cavity from the square connecting area during final forging, replenishing the blank during final forging to reduce meat shortage. In addition, the square connecting area connects each cavity, and the overflowing blank has a tendency to squeeze each other, forcing the material at the short tooth position to return to the upper tooth cavity and the lower tooth cavity where it is located, reducing the folding caused by the blank overflowing from the edge.

[0030] 4. The composite die of the utility model is provided with a shaping die and a punch on the pressing die, a profiling seat is provided on the base, and a vertical hole is provided on the profiling seat. The trimming edge can cut off the flash of the outer edge of the special-shaped double-pronged part and can also perform punching and shaping on the special-shaped double-pronged part. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a cross-sectional view of a forging die for a production line of special-shaped double-fork parts of the utility model;

[0032] Figure 2 This is a front view of a composite die for a production line of special-shaped double-fork parts according to the present invention;

[0033] Figure 3 This is a cross-sectional view of a die of a composite die for a production line of special-shaped double-fork parts according to the present invention;

[0034] Figure 4 It is an isometric view of the special-shaped double fork.

[0035] In the figure: 1-square connecting area, 2-residue trough, 3-upper die, 4-upper tooth cavity, 5-pre-storage area, 6-main body profiling cavity, 7-pre-forging core die, 8-lower tooth cavity, 9-arc transition slope, 10-final forging cavity, 11-final forging core die, 12-lower die, 13-arc block, 14-profiling transition section, 15-pre-forging cavity, 16-profiling arc surface, 17-main core, 18-quadrangular pyramid cavity, 19-annular body, 20-step groove, 21-outer convex arc surface, 22-short tooth, 23-punch, 24-nitrogen spring, 25-vertical plate, 26-sliding plate, 27-mounting plate, 28-trimming edge, 29-supporting plate, 30-profiling placement seat, 31-compression spring, 32-base, 33-shaping die, 34-through hole, 35-extending hole, 36-pressing die. DETAILED DESCRIPTION

[0036] For the convenience of those skilled in the art to understand, the utility model is further explained below in combination with the drawings.

[0037] As shown in Figures 1-4 A special-shaped double fork production line, including forging die, the forging die includes upper die 3 and lower die 12, upper die 3 is equipped with pre-forging top die and finish-forging top die, lower die 12 is equipped with pre-forging bottom die and finish-forging bottom die, when upper die 3 lower die 12 closes, pre-forging bottom die and pre-forging top die, finish-forging top die and finish-forging bottom die respectively enclose pre-forging cavity 15 and finish-forging cavity 10;

[0038] The utility model pre-forging cavity 15 and finish-forging cavity 10 all include main body profiling cavity 6, two with special-shaped double fork upper end short tooth 22 one-to-one corresponding upper tooth cavity 4 and two with special-shaped double fork lower end short tooth 22 one-to-one corresponding lower tooth cavity 8, pre-forging cavity 15 upper main body profiling cavity 6 and lower tooth cavity 8, the connecting place of upper tooth cavity 4 is equipped with arc transition slope 9, finish-forging cavity 10 upper main body profiling cavity 6 and upper tooth cavity 4, lower tooth cavity 8's connecting place is equipped with with special-shaped double fork step groove 20 matching profiling transition section 14;

[0039] Specifically, compared with the profiling transition section 14 of the finish-forging cavity 10, the arc transition slope 9 on the pre-forging cavity 15 can reduce the resistance received by the blank when filling the lower end short tooth 22, making it easier to fill the short tooth 22, and avoiding the occurrence of meat shortage. Under the condition of ensuring the qualified forgings, the pre-forging cavity 15 which is not completely the same as the finish-forging cavity 10 can reduce the overflow amount of the blank, thereby reducing the occurrence of folding problems.

[0040] The utility model pre-forging bottom die and pre-forging top die all are equipped with pre-forging core die 7 in pre-forging cavity 15, pre-forging core die 7 is four square platform shape corresponding with special-shaped double fork type cavity 18, finish-forging bottom die and finish-forging top die all are equipped with finish-forging core die 11 in finish-forging cavity 10;

[0041] The utility model finish-forging die core is the profiling die core of four square platform type cavity 18, and the finish-forging core die 11 includes a main core 17 and two arc blocks 13 with the same shape as the pre-forging core die 7, the two arc blocks 13 are connected to the upper end face of the main core 17, the arc blocks 13 are provided with a profiling surface, and the profiling surface and the end face of the main core 17 jointly form a profiling arc surface 16 matched with the outer convex arc surface 21.

[0042] Specifically, the pre-forging core die 7 does not set a part matched with the arc surface of the four square platform type cavity 18, but is simplified as a four square platform shape as a whole, which increases the transition space of the main body profiling cavity 6 and the upper tooth cavity 4 and the lower tooth cavity 8, so that the blank can more easily enter the upper tooth cavity 4 and the lower tooth cavity 8 and fill them up, avoiding the occurrence of meat shortage, folding and other conditions.

[0043] Specifically, the two pre-forging core dies 7 are close to each other at one end, and when the upper die 3 and the lower die 12 are closed, a pre-storage area 5 for storing the blank can be formed, and the excess blank can flow into the pre-storage area 5 during pre-forging, and the excess blank flowing into the pre-storage area 5 can be used as a supplement during final forging, reducing the overflow of the blank during pre-forging and material waste.

[0044] The utility model discloses two final forging core dies 11 are close to each other at one end, and when the upper die 3 and the lower die 12 are closed, a square communication area 1 can be formed, the square communication area 1 and pre-storage area 5 position one to one correspondence, the blank flowing into pre-storage area 5 during pre-forging can enter final forging cavity 10 from the edge of square communication area 1 during final forging.

[0045] Specifically, the part of the excess material remaining in the pre-storage area 5 during pre-forging can supplement the blank during final forging to reduce the lack of meat, in addition, the square communication area 1 communicates each cavity, and the overflowed blank will have a tendency to extrude each other, forcing the material at the position of the short tooth 22 to return to the upper tooth cavity 4 and the lower tooth cavity 8 where it belongs, reducing the folding caused by the overflow of the blank from the edge.

[0046] The pre-forging core die 7 and the final forging core die 11 close to the upper die 3 are integrally formed with the pre-forging top die and the final forging top die respectively, and the pre-forging core die 7 and the final forging core die 11 close to the lower die 12 are integrally formed with the pre-forging bottom die and the final forging bottom die respectively, so that the connection strength is guaranteed and the service life is prolonged.

[0047] The utility model discloses pre-forging bottom die and final forging bottom die's outer edge all is equipped with excess material groove 2, two excess material grooves 2 all set up on the lower die 12 upper end face, and the excess material can flow into the excess material groove 2, so that the overflowed excess material can have a regular shape to facilitate the subsequent processing procedure.

[0048] Specifically, the upper die 3 and the lower die 12 are respectively provided with positioning grooves and positioning keys that can cooperate with each other, facilitating the positioning and cooperation of the upper die 3 and the lower die 12.

[0049] Specifically, the special-shaped double fork after final forging will have a layer of excess material solidified on the inner wall due to the setting of the square communication area 1 in the final forging die, so the excess material will flow into the special-shaped double fork, and the excess material overflowing from the excess material groove 2 will form burrs on the outer edge of the annular main body 19 during final forging, therefore, the subsequent processing needs to punch the special-shaped double fork to remove the excess material, edge trim the special-shaped double fork to remove the burrs, and shape the special-shaped double fork to ensure the processing quality.

[0050] The utility model also includes the compound mould that can take out the edge cutting, punching, shaping of final forging cavity 10, compound mould includes base 32 and with the compression mould 36 of compression machine connection, base 32 is located below compression mould 36, and the compression mould 36 is installed with mounting bracket and the punch 23 of the shape matching of final forging mould square communication area 1, and the upper end detachable of punch 23 is installed on compression mould 36, and it is convenient to replace for it;

[0051] The utility model mounting bracket upper end is fixed on compression mould 36, and the lower extreme of compression mould 36 is equipped with edge cutting blade mouth 28, and the upper extreme of compression mould 36 is equipped with through -hole 34 located edge cutting blade mouth 28, and one end of punch 23 is installed on compression mould 36, and the other end of punch 23 passes through through -hole 34 and extends from edge cutting blade mouth 28;

[0052] Specifically, the base 32 is provided with a profiling placing seat 30 matched with the special-shaped double fork, the side wall of the profiling placing seat 30 can be slidably matched with the edge cutting blade mouth 28, the profiling placing seat 30 is provided with a blanking vertical hole slidably matched with the punch 23, the excess material cut by the punch 23 can fall from the lower end of the blanking vertical hole, and the edge cutting blade mouth 28 and the punch 23 can move downward together with the movement of the press, so that the excess material and the flash on the special-shaped double fork placed on the profiling placing seat 30 are cut off.

[0053] The utility model mounting bracket includes mounting plate 27 and two vertical boards 25, and the upper end of the vertical board 25 is installed on the compression mould 36, and the lower end of the vertical board 25 is connected with the mounting plate 27, and the vertical board 25 is installed with the sliding plate 26 that can slide between the mounting plate 27 and the compression mould 36, and the nitrogen gas spring 24 is connected between the sliding plate 26 and the compression mould 36, and the sliding plate 26 is installed with the shaping die 33 matched with the special-shaped double fork, and the lower end of the shaping die 33 can extend from the edge cutting blade mouth 28 through the through -hole 34 on the mounting plate 27;

[0054] Specifically, when the press drives the compression mould 36 to move downward, the punch 23 first contacts the special-shaped double fork to cut off the excess material on the inner wall of the special-shaped double fork, and as the press continues to move downward, the edge cutting blade mouth 28 contacts the special-shaped double fork to cut off the flash on the outer edge of the special-shaped double fork. At this time, the lower end surface of the shaping die 33 is also buckled on the special-shaped double fork. As the press continues to move downward, the sliding plate 26 starts to move relative to the vertical plate 25 to continuously compress the nitrogen gas spring 24. The reaction force of the compressed nitrogen gas spring 24 is transmitted to the shaping die 33 through the moving plate, so that the shaping die 33 is pressed against the special-shaped double fork. Under the joint action of the shaping die 33 and the profiling placing seat 30, the special-shaped double fork is shaped.

[0055] The sliding plate 26 and the shaping die 33 are both provided with an extension hole 35 slidably matched with the punch 23, and the punch 23 can extend from the lower end of the shaping die 33 through the sliding plate 26.

[0056] Specifically, the outer wall of the profiling placement seat 30 is slidably provided with a material supporting plate 29, the material supporting plate 29 is directly connected with a plurality of compression springs 31, the trimming blade 28 will continue to move downward to push the flash to the material supporting plate 29 after cutting the flash, at this time, the material supporting plate 29 will also be pushed downward by the trimming blade 28 to compress the compression springs 31, the trimming blade 28 is separated from the material supporting plate 29 after the press is raised, the compression springs 31 restore to drive the material supporting plate 29 to move upward to lift the flash, which facilitates taking out the cut flash.

[0057] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the scope of protection of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the appended claims of the present application.

Claims

1. A production line for special-shaped double-fork parts, characterized in that: The forging die comprises an upper die (3) and a lower die (12); the upper die (3) is provided with a pre-forging top die and a final forging top die; the lower die (12) is provided with a pre-forging bottom die and a final forging bottom die; when the upper die (3) and the lower die (12) are closed, the pre-forging bottom die and the pre-forging top die, the final forging top die and the final forging bottom die respectively enclose a pre-forging cavity (15) and a final forging cavity (10); The preforging bottom die and the preforging top die are both provided with a preforging core die (7) located in the preforging cavity (15), and the preforging core die (7) is in the shape of a quadrangular pyramid corresponding to the special-shaped double-forked quadrangular pyramid cavity (18); The final forging bottom die and the final forging top die are both provided with a final forging core die (11) located in the final forging cavity (10), the final forging core die (11) comprising a main core (17) having the same shape as the pre-forging core die (7) and two arc-shaped blocks (13), both of the two arc-shaped blocks (13) are connected to the upper end surface of the main core (17), and the arc-shaped blocks (13) are provided with a profiling surface, and the profiling surface and the end surface of the main core (17) together form a profiling arc surface (16) matching the outer convex arc surface (21); It also includes a composite die capable of trimming, punching and shaping the forgings taken out of the final forging cavity (10).

2. The production line for special-shaped double-fork parts according to claim 1, characterized in that: One end of the two pre-forging core dies (7) close to each other can form a pre-storage area (5) for storing blanks when the upper die (3) and the lower die (12) are closed; The ends of the two final forging core dies (11) that are close to each other can form a square communication area (1) when the upper die (3) and the lower die (12) are closed. The square communication area (1) corresponds to the position of the pre-storage area (5) one by one. The blank that flows into the pre-storage area (5) during pre-forging can enter the final forging cavity (10) from the edge of the square communication area (1) during final forging.

3. The production line for special-shaped double-fork parts according to claim 1, characterized in that: The pre-forging cavity (15) and the final forging cavity (10) both include a main body profiling cavity (6), two upper tooth cavities (4) corresponding one-to-one to the short teeth (22) at the upper end of the special-shaped double fork piece, and two lower tooth cavities (8) corresponding one-to-one to the short teeth (22) at the lower end of the special-shaped double fork piece; The connection between the main body profiling cavity (6) and the lower tooth cavity (8) and the upper tooth cavity (4) on the pre-forging cavity (15) is provided with an arc-shaped transition slope (9), and the connection between the main body profiling cavity (6) and the upper tooth cavity (4) and the lower tooth cavity (8) on the final forging cavity (10) is provided with a profiling transition section (14) matching the special-shaped double-fork stepped groove (20).

4. The production line for special-shaped double-fork parts according to claim 1, characterized in that: The pre-forging core die (7) and the final forging core die (11) close to the upper die (3) are integrally formed with the pre-forging top die and the final forging top die respectively; the pre-forging core die (7) and the final forging core die (11) close to the lower die (12) are integrally formed with the pre-forging bottom die and the final forging bottom die respectively.

5. The production line for special-shaped double-fork parts according to claim 1, characterized in that: The outer edges of the pre-forging bottom die and the final forging bottom die are both provided with residual material grooves (2), and the two residual material grooves (2) are both arranged on the upper end surface of the lower die (12).

6. The production line for special-shaped double-fork parts according to claim 1, characterized in that: The upper die (3) and the lower die (12) are respectively provided with positioning grooves and positioning keys that can cooperate with each other.

7. The production line for special-shaped double-fork parts according to claim 1, characterized in that: The composite mold comprises a base (32) and a die (36) connected to a press, wherein the base (32) is located below the die (36), a mounting frame and a punch (23) matching the shape of the square communication area (1) are mounted on the die (36), the upper end of the mounting frame is fixed on the die (36), a trimming edge (28) is provided at the lower end of the die (36), a through hole (34) located above the trimming edge (28) is provided on the die (36), one end of the punch (23) is mounted on the die (36), and the other end of the punch (23) passes through the through hole (34) and protrudes from the trimming edge (28); The base (32) is provided with a contoured placement seat (30) that matches the special-shaped double-fork piece, the side wall of the contoured placement seat (30) can slide with the trimming edge (28), and the contoured placement seat (30) is provided with a blanking vertical hole that can slide with the punch (23).

8. The production line for special-shaped double-fork parts according to claim 7, characterized in that: The upper end of the punch (23) is detachably mounted on the die (36).

9. The production line for special-shaped double-fork parts according to claim 7, characterized in that: The mounting frame includes a mounting plate (27) and two vertical plates (25), the upper ends of the vertical plates (25) are mounted on the die (36), and the lower ends of the vertical plates (25) are connected to the mounting plate (27); A sliding plate (26) capable of sliding between the mounting plate (27) and the pressing die (36) is mounted on the vertical plate (25); a nitrogen spring (24) is connected between the sliding plate (26) and the pressing die (36); a shaping die (33) matching the special-shaped double fork piece is mounted on the sliding plate (26); the lower end of the shaping die (33) can pass through the through hole (34) on the mounting plate (27) and protrude from the trimming edge (28); The sliding plate (26) and the shaping die (33) are both provided with an extension hole (35) that can slide with the punch (23), and the punch (23) can pass through the sliding plate (26) and extend from the lower end of the shaping die (33).

10. The production line for special-shaped double-fork parts according to claim 7, characterized in that: A supporting plate (29) is slidably mounted on the outer wall of the contoured placement seat (30), and the supporting plate (29) and the base (32) are directly connected via a plurality of compression springs (31).

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