CN213856637U - Continuous upsetting and extruding die for vehicle door connecting piece - Google Patents

Abstract

The utility model relates to a door connecting piece processing equipment, the continuous crowded mould of mound of door connecting piece specifically says so. It comprises an upper die and a lower die. The upper die is characterized by comprising an upper die base which is horizontally arranged, the lower die comprises a lower die base which is horizontally arranged, the upper die base and the lower die base are both in a strip shape, and the upper die base and the lower die base are arranged in parallel. The die comprises an upper die base, a lower die base and a die holder, wherein the upper die base and the lower die base sequentially comprise a cutting station, a stretching station, a heading and extruding station, a trimming station, a forming station, a punching station and a separating station from one end to the other end of the upper die base and the lower die base. The car door connecting piece processed by the high mould has high strength, is not easy to damage and has long service life.

Description

Continuous upsetting and extruding die for vehicle door connecting piece

Technical Field

The utility model relates to a door connecting piece processing equipment, the continuous crowded mould of mound of door connecting piece specifically says so.

Background

The door connector generally comprises an L-shaped web 111, the web 1 having webs 112 on both long sides and one end, and a hinge 111 adjacent the end web 112 having a rebate 113, as shown in figure 1. When the workshop connecting piece is processed, a hole flanging needs to be processed. The traditional processing mode is that the hole is punched firstly and then the hole is turned, and in order to ensure that the hole is vertical, the adopted method is to tighten the hole turning gap and ensure that the wall thickness of the hole is smaller than the material thickness. However, the wall thickness of the hole flanging is smaller than the material thickness, so that the product has lower strength, is easy to damage and has shorter service life.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a door connecting piece is crowded mould in succession mound, the door connecting piece intensity that adopts high mould to process out is higher, not fragile, and life is longer.

In order to solve the problems, the following technical scheme is provided:

the utility model discloses a continuous mound of door connecting piece extrudes mould, including last mould and lower mould. The upper die is characterized by comprising an upper die base which is horizontally arranged, the lower die comprises a lower die base which is horizontally arranged, the upper die base and the lower die base are both in a strip shape, and the upper die base and the lower die base are arranged in parallel. The die comprises an upper die base, a lower die base and a die holder, wherein the upper die base and the lower die base sequentially comprise a cutting station, a stretching station, a heading and extruding station, a trimming station, a forming station, a punching station and a separating station from one end to the other end of the upper die base and the lower die base.

The cutting station comprises an upper cutting plate and a lower cutting plate, the stretching station comprises an upper stretching plate and a lower stretching plate, the upsetting station comprises an upper upsetting extruding plate and a lower upsetting extruding plate, the trimming station comprises an upper trimming plate and a lower trimming plate, the forming station comprises an upper forming plate and a lower forming plate, the punching station comprises an upper punching hole plate and a lower punching hole plate, and the separating station comprises an upper separating plate and a lower separating plate. The upper cutting plate, the upper stretching plate, the upper pier extrusion plate, the upper trimming plate, the upper forming plate, the upper punching plate, the upper separating plate and the upper die base are movably matched with each other up and down, and upper die springs are arranged between the upper cutting plate, the upper stretching plate, the upper pier extrusion plate, the upper trimming plate, the upper forming plate, the upper punching plate and the upper separating plate and the upper die base. The lower cutting plate, the lower stretching plate, the lower pier extruding plate, the lower trimming plate, the lower forming plate, the lower punching plate and the lower separating plate are all fixed on the upper surface of the lower die holder, and a finished product slideway is arranged on the lower die holder corresponding to the lower separating plate. The cutting die comprises an upper cutting plate, a lower cutting plate, a die holder, a die holder, a cutting punch, a cutting limiting head, a lower die holder and a lower die holder, wherein the upper cutting plate and the lower cutting plate are respectively provided with a cutting hole at the corresponding position, the cutting punch is arranged in the cutting hole of the upper cutting plate, the upper end of the cutting punch is fixed on the upper die holder, the cutting punch and the cutting holes are in up-down sliding fit, the cutting limiting head is arranged in the cutting hole of the lower cutting plate, the cutting limiting head is fixed on the lower die holder, and the height of the upper edge of the cutting limiting head is smaller than that of the upper surface of the lower cutting plate. The upper die base is characterized in that stretching holes are formed in corresponding positions of the upper stretching plate and the lower stretching plate, stretching punches are arranged in the stretching holes of the upper stretching plate, the upper ends of the stretching punches are fixed on the upper die base, the stretching punches are matched with the stretching holes in an up-down sliding mode, stretching limiting heads are arranged in the stretching holes of the lower stretching plate, and the upper ends of the stretching limiting heads are located below the upper surface of the lower stretching plate. The upper die base is fixed on the upper die base, the lower die base is provided with a lower die extrusion plate, the upper die extrusion plate is provided with a lower die extrusion plate, the lower die extrusion plate is provided with a lower die extrusion plate, and the lower die extrusion plate is provided with a lower die extrusion plate. The upper trimming plate and the lower trimming plate are respectively provided with a trimming hole and a first yielding hole at corresponding positions, a trimming punch is arranged in the trimming hole of the upper trimming plate, the upper end of the trimming punch is fixed on the upper die base, the trimming punch and the trimming hole are in up-down sliding fit, a first punching punch is arranged in the first yielding hole of the upper trimming plate, the upper end of the first punching punch is fixed on the upper die base, and the first punching punch and the first yielding hole are in up-down sliding fit. The upper forming plate is provided with a forming hole, the lower forming plate corresponding to the forming hole is provided with a forming male die, a forming punch is arranged in the forming hole, the upper end of the forming punch is fixed on the upper die base, and the forming punch and the forming hole are in up-down sliding fit. The upper punch plate and the lower punch plate are respectively provided with a second yielding hole, a second punching punch is arranged in the second yielding hole of the upper punch plate, the upper end of the second punching punch is fixed on the upper die base, the second punching punch and the second yielding hole are in up-down sliding fit, a punching support head is arranged in the second yielding hole of the lower punch plate, and the punching support head is tubular. The upper separating plate and the lower separating plate are respectively provided with a separating hole, a separating punch is arranged in the separating hole of the upper separating plate, the upper end of the separating punch is fixed on the upper die base, and the separating punch is in sliding fit with the separating hole up and down. Blanking channels are arranged on the lower die seats corresponding to the trimming holes of the lower cutting plate, the first yielding holes of the lower cutting plate, the punching support heads and the separating holes of the lower separating plate.

The number of the stretching holes is not less than two, the stretching holes are sequentially arranged along the longitudinal direction of the upper die base and the lower die base, the hole diameter of each stretching hole is gradually reduced from the position close to the upper cutting plate to the position far away from the upper cutting plate, and the distance from the stretching limiting head to the upper surface of the lower stretching plate is gradually increased from the position close to the upper cutting plate to the position far away from the upper cutting plate. The crowded hole of mound has and is no less than two, and the aperture in the crowded hole of mound is from being close to last drawing board to keeping away from last drawing board grow gradually, and the distance of the crowded spacing head of mound to last crowded board upper surface of mound is from being close to last drawing board to keeping away from last drawing board and diminishing gradually.

The upper die holder comprises an upper supporting plate which is horizontally arranged. An upper template is horizontally arranged below the upper supporting plate, the upper template is connected with the upper supporting plate through upper padding feet, upper clamping plates are arranged above the upper cutting plate, the upper stretching plate, the upper pier extruding plate, the upper trimming plate, the upper forming plate, the upper punching hole plate and the upper separating plate, upper padding plates are fixed on upper surfaces of the upper clamping plates, and upper surfaces of the upper padding plates are fixed on lower surfaces of the upper template. The lower die base comprises a lower supporting plate which is horizontally arranged, a lower die plate which is horizontally arranged is arranged above the lower supporting plate, the lower die plate is connected with the lower supporting plate through a lower pad foot, and the lower cutting plate, the lower stretching plate, the lower pier extruding plate, the lower trimming plate, the lower forming plate, the lower punching plate and the lower separating plate are all fixed on the lower template.

The upper cutting plate, the upper stretching plate, the upper pier extrusion plate, the upper trimming plate, the upper forming plate, the upper punch hole plate, the upper support plate above the upper separating plate and the upper mold plate are horizontally arranged, the upper striking plate is arranged in an up-and-down sliding mode, the upper mold springs are arranged between the upper plate surface of the upper striking plate and the upper support plate, the upper ejector rods which are vertically arranged are fixed on the lower plate surface of the upper striking plate, the lower ends of the upper ejector rods sequentially penetrate through the upper mold plate, the upper base plate and the upper support plate and then abut against the corresponding upper cutting plate, the upper stretching plate, the upper pier extrusion plate, the upper trimming plate, the upper punch hole plate and the upper separating plate, and the upper ejector rods are in sliding fit with the upper mold plate, the upper base plate and the upper support plate.

The lower knockout plate is horizontally arranged between the lower die plate and the lower supporting plate, the lower die spring is arranged between the lower knockout plate and the lower supporting plate, the upper plate surface of the lower knockout plate is fixedly provided with a lower ejector rod, the upper end of the lower ejector rod penetrates through the lower die plate and extends out of the upper die plate, and the lower ejector rod is in sliding fit with the lower die plate.

By adopting the scheme, the method has the following advantages:

because the utility model discloses an last mould of continuous mound of door connecting piece mould of extruding includes the upper die base that the level was arranged, the lower mould includes the die holder that the level was arranged, and upper die base and die holder all are rectangular form, and are the parallel between the two and arrange side by side, from between upper die base and die holder their one end to the other end in proper order including cutting off station, tensile station, the crowded station of mound, side cut station, shaping station, punching a hole station and separation station. The continuous pier extrusion die is used for processing the vehicle door connecting piece, the hole flanging of the vehicle door connecting piece is obtained by stretching and punching after extruding the convex hull by the pier, the wall thickness of the convex hull is thicker by adopting a pier extrusion mode, and the wall thickness of the punched hole flanging is not smaller than the wall thickness of a material, so that the strength of the hole flanging is greatly ensured, the hole flanging is not easy to damage, and the service life of the vehicle door connecting piece is greatly prolonged.

Drawings

FIG. 1 is a schematic view of a door coupling according to the prior art;

FIG. 2 is a schematic structural view of the continuous upsetting-extruding die for the vehicle door connecting piece of the present invention;

fig. 3 is a schematic bottom view of the upper middle die of the continuous upsetting-extruding die for the vehicle door connecting piece of the present invention;

FIG. 4 is a schematic top view of the middle and lower dies of the continuous upsetting-extruding die for the vehicle door connecting member of the present invention;

fig. 5 is a using state diagram of the continuous upsetting-extruding die of the car door connecting piece in the die opening state of the utility model.

Detailed Description

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

As shown in figures 2-5, the utility model discloses a continuous mound of door connecting piece extrudes mould, including last mould and lower mould. The upper die comprises an upper die base which is horizontally arranged, the lower die comprises a lower die base which is horizontally arranged, the upper die base and the lower die base are both in a long strip shape, and the upper die base and the lower die base are arranged in parallel and side by side. The die comprises an upper die base, a lower die base and a die holder, wherein the upper die base and the lower die base sequentially comprise a cutting station, a stretching station, a heading and extruding station, a trimming station, a forming station, a punching station and a separating station from one end to the other end of the upper die base and the lower die base.

The cutting station comprises an upper cutting plate 9 and a lower cutting plate 24, the stretching station comprises an upper stretching plate 10 and a lower stretching plate 23, the upsetting station comprises an upper upsetting plate 13 and a lower upsetting plate 20, the trimming station comprises an upper trimming plate 14 and a lower trimming plate 19, the forming station comprises an upper forming plate 15 and a lower forming plate 18, the punching station comprises an upper punching hole plate 16 and a lower punching hole plate 17, and the separating station comprises an upper separating plate 33 and a lower separating plate 41. The upper cutting plate 9, the upper stretching plate 10, the upper pier extrusion plate 13, the upper trimming plate 14, the upper forming plate 15, the upper punch hole plate 16 and the upper separating plate 33 are in movable fit with the upper die base up and down, and an upper die spring 12 is arranged between the upper die base and the upper die plate. The lower cutting plate 24, the lower stretching plate 23, the lower pier extrusion plate 20, the lower trimming plate 19, the lower forming plate 18, the lower punching hole plate 17 and the lower separating plate 41 are all fixed on the upper surface of the lower die base, and a finished product slideway 43 is arranged on the lower die base corresponding to the lower separating plate 41. The cutting device comprises an upper cutting plate 9, a lower cutting plate 24, a cutting punch 25, a cutting limiting head 34, a lower die holder and a cutting limiting head 34, wherein the upper cutting plate 9 and the lower cutting plate 24 are respectively provided with a cutting hole at corresponding positions, the cutting punch 25 is arranged in the cutting hole of the upper cutting plate 9, the upper end of the cutting punch 25 is fixed on the upper die holder, the cutting punch 25 is in up-down sliding fit with the cutting hole, the cutting limiting head 34 is arranged in the cutting hole of the lower cutting plate 24, and the height of the upper edge of the cutting limiting head 34 is smaller than that of the upper surface of the lower cutting plate 24. The upper stretching plate 10 and the lower stretching plate 23 are provided with stretching holes at corresponding positions, a stretching punch 26 is arranged in the stretching hole of the upper stretching plate 10, the upper end of the stretching punch 26 is fixed on the upper die base, the stretching punch 26 is in up-down sliding fit with the stretching hole, a stretching limiting head 35 is arranged in the stretching hole of the lower stretching plate 23, and the upper end of the stretching limiting head 35 is positioned below the upper surface of the lower stretching plate 23. The corresponding positions of the upper pier extrusion plate 13 and the lower pier extrusion plate 20 are provided with pier extrusion holes, the pier extrusion holes of the upper pier extrusion plate 13 are provided with pier extrusion punch heads 27, the pier extrusion punch heads 27 are fixed on the upper die base, the pier extrusion holes of the lower pier extrusion plate 20 are provided with pier extrusion limiting heads 36, and the upper ends of the pier extrusion limiting heads 36 are positioned below the upper surface of the upper pier extrusion plate 13. The upper trimming plate 14 and the lower trimming plate are respectively provided with a trimming hole 37 and a first yielding hole 38 at corresponding positions, a trimming punch 28 is arranged in the trimming hole 37 of the upper trimming plate 14, the upper end of the trimming punch 28 is fixed on the upper die base, the trimming punch 28 is in up-and-down sliding fit with the trimming hole 37, a first punching punch 29 is arranged in the first yielding hole 38 of the upper trimming plate 14, the upper end of the first punching punch 29 is fixed on the upper die base, and the first punching punch 29 is in up-and-down sliding fit with the first yielding hole 38. The upper forming plate 15 is provided with a forming hole, the lower forming plate 18 corresponding to the forming hole is provided with a forming male die 39, a forming punch 30 is arranged in the forming hole, the upper end of the forming punch 30 is fixed on the upper die base, and the forming punch 30 is matched with the forming hole in an up-and-down sliding manner. All there is the second hole of stepping down on punch plate 16 and the lower punch plate 17, has second punching punch 31 in the second hole of stepping down of punch plate 16, and the upper end of second punching punch 31 is fixed on the upper die base, and second punching punch 31 and second are stepped down and are the cooperation of upper and lower slip form between the hole, have the support head 40 that punches a hole in the second hole of stepping down of punch plate 17, and support head 40 that punches a hole is tubulose. The upper separating plate 33 and the lower separating plate 41 are both provided with separating holes 42, separating punches 32 are arranged in the separating holes 42 of the upper separating plate 33, the upper ends of the separating punches 32 are fixed on the upper die base, and the separating punches 32 are in up-and-down sliding fit with the separating holes 42. Blanking channels are arranged on the lower die seats corresponding to the trimming holes 37 of the lower cutting plate, the first abdicating holes 38 of the lower cutting plate, the punching support heads 40 and the separating holes 42 of the lower separating plate 41.

The number of the stretching holes is not less than two, the stretching holes are sequentially arranged along the longitudinal direction of the upper die base and the lower die base, the aperture of each stretching hole is gradually reduced from the position close to the upper cutting plate 9 to the position far away from the upper cutting plate 9, and the distance from the stretching limiting head 35 to the upper surface of the lower stretching plate 23 is gradually increased from the position close to the upper cutting plate 9 to the position far away from the upper cutting plate 9. The number of the pier extrusion holes is not less than two, the aperture of each pier extrusion hole is gradually increased from the position close to the upper stretching plate 10 to the position far away from the upper stretching plate 10, and the distance from the pier extrusion limiting head 36 to the upper surface of the upper pier extrusion plate 13 is gradually reduced from the position close to the upper stretching plate 10 to the position far away from the upper stretching plate 10.

The upper die holder comprises an upper supporting plate 8 which is horizontally arranged. An upper template 6 is horizontally arranged below the upper supporting plate 8, the upper template 6 is connected with the upper supporting plate 8 through upper padding feet 7, upper clamping plates 4 are arranged above the upper cutting plate 9, the upper stretching plate 10, the upper pier extrusion plate 13, the upper trimming plate 14, the upper forming plate 15, the upper punch hole plate 16 and the upper separating plate 33, upper padding plates 5 are fixed on the upper plate surfaces of the upper clamping plates 4, and the upper plate surfaces of the upper padding plates 5 are fixed on the lower plate surfaces of the upper template 6. The lower die holder comprises a lower supporting plate 1 which is horizontally arranged, a lower die plate 3 which is horizontally arranged is arranged above the lower supporting plate 1, the lower die plate 3 is connected with the lower supporting plate 1 through a lower pad 2, and a lower cutting plate 24, a lower stretching plate 23, a lower pier extruding plate 20, a lower trimming plate 19, a lower forming plate 18, a lower punching hole plate 17 and a lower separating plate 41 are all fixed on a lower template.

The upper cutting plate 9, the upper stretching plate 10, the upper pier extrusion plate 13, the upper trimming plate 14, the upper forming plate 15, the upper punch hole plate 16 and the upper support plate 8 and the upper mold plate 6 above the upper separating plate 33 are all horizontally arranged, the upper striking plate 11 is arranged in an up-and-down sliding manner, the upper mold springs 12 are arranged between the upper plate surface of the upper striking plate 11 and the upper support plate 8, the upper ejector rods vertically arranged are fixed on the lower plate surface of the upper striking plate 11, the lower ends of the upper ejector rods sequentially penetrate through the upper mold plate 6, the upper trimming plate 14, the upper forming plate 15, the upper punch hole plate 16 and the upper separating plate 33 and abut against the corresponding upper cutting plate 9, the upper stretching plate 10, the upper pier extrusion plate 13, the upper trimming plate 14, the upper forming plate 15, the upper punch hole plate 16 and the upper separating plate 33, and the upper ejector rods are matched with the upper mold plate 6, the upper cushion plate 5 and the upper clamping plate 4 in a sliding manner.

A lower knockout plate 22 is horizontally arranged between the lower die plate 3 and the lower supporting plate 1, a lower die spring 21 is arranged between the lower knockout plate 22 and the lower supporting plate 1, a lower ejector rod is fixed on the upper plate surface of the lower knockout plate 22, the upper end of the lower ejector rod penetrates through the lower die plate 3 and extends out of the upper die plate 6, and the lower ejector rod is in sliding fit with the lower die plate 3.

When the automobile door connecting piece machining device is used, the upper die base is connected with the upper sliding block of a machine tool, the lower die base is connected with the lower table surface of the machine tool, the material belt is placed on the material feeding machine, one end of the material belt is fed into the lower die, the machine tool and the material feeding machine are started, the upper die base of the machine tool rises and falls in a reciprocating mode, the material feeding machine carries out stepping feeding in the rising process of the upper die base, and under the sequential effects of the cutting station, the stretching station, the upsetting station, the trimming station, the forming station, the punching station and the separating station, machining of the automobile door connecting piece is completed. The continuous pier extrusion die is used for obtaining the hole flanging of the vehicle door connecting piece by stretching, extruding the convex hull by the pier and then punching, the wall thickness of the convex hull is thicker by adopting a pier extrusion mode, and the wall thickness of the punched hole flanging is not smaller than the wall thickness of a material, so that the strength of the hole flanging is greatly ensured, the hole flanging is not easy to damage, and the service life of the vehicle door connecting piece is greatly prolonged.

Claims (6)

1. A continuous upsetting-extruding die for a vehicle door connecting piece comprises an upper die and a lower die; the device is characterized in that the upper die comprises an upper die holder which is horizontally arranged, the lower die comprises a lower die holder which is horizontally arranged, the upper die holder and the lower die holder are both in a strip shape, and the upper die holder and the lower die holder are arranged in parallel and side by side; the die comprises an upper die base, a lower die base and a die holder, wherein the upper die base and the lower die base sequentially comprise a cutting station, a stretching station, a heading and extruding station, a trimming station, a forming station, a punching station and a separating station from one end to the other end of the upper die base and the lower die base.

2. The door link continuous upsetting die as recited in claim 1, wherein said cutting station comprises an upper cutting plate (9) and a lower cutting plate (24), said drawing station comprises an upper drawing plate (10) and a lower drawing plate (23), said upsetting station comprises an upper upsetting plate (13) and a lower upsetting plate (20), said trimming station comprises an upper trimming plate (14) and a lower trimming plate (19), said forming station comprises an upper forming plate (15) and a lower forming plate (18), said punching station comprises an upper punching plate (16) and a lower punching plate (17), said separating station comprises an upper separator plate (33) and a lower separator plate (41); the upper cutting plate (9), the upper stretching plate (10), the upper pier extrusion plate (13), the upper trimming plate (14), the upper forming plate (15), the upper punch plate (16) and the upper separating plate (33) are movably matched with the upper die base up and down, and an upper die spring (12) is arranged between the upper cutting plate and the upper die base; the lower cutting plate (24), the lower stretching plate (23), the lower pier extruding plate (20), the lower trimming plate (19), the lower forming plate (18), the lower punching plate (17) and the lower separating plate (41) are all fixed on the upper surface of the lower die base, and a finished product slideway (43) is arranged on the lower die base corresponding to the lower separating plate (41); the cutting device is characterized in that cutting holes are formed in corresponding positions of the upper cutting plate (9) and the lower cutting plate (24), a cutting punch head (25) is arranged in each cutting hole of the upper cutting plate (9), the upper end of each cutting punch head (25) is fixed on the upper die base, the cutting punch heads (25) are matched with the cutting holes in an up-and-down sliding mode, a cutting limiting head (34) is arranged in each cutting hole of the lower cutting plate (24), the cutting limiting head (34) is fixed on the lower die base, and the height of the upper edge of each cutting limiting head (34) is smaller than the height of the upper surface of the lower cutting plate (24); stretching holes are formed in corresponding positions of the upper stretching plate (10) and the lower stretching plate (23), a stretching punch head (26) is arranged in each stretching hole of the upper stretching plate (10), the upper end of each stretching punch head (26) is fixed on the upper die base, the stretching punch heads (26) are matched with the stretching holes in an up-and-down sliding mode, stretching limiting heads (35) are arranged in the stretching holes of the lower stretching plate (23), and the upper ends of the stretching limiting heads (35) are located below the upper surface of the lower stretching plate (23); pier extrusion holes are formed in corresponding positions of the upper pier extrusion plate (13) and the lower pier extrusion plate (20), a pier extrusion punch head (27) is arranged in the pier extrusion hole of the upper pier extrusion plate (13), the pier extrusion punch head (27) is fixed on the upper die base, a pier extrusion limiting head (36) is arranged in the pier extrusion hole of the lower pier extrusion plate (20), and the upper end of the pier extrusion limiting head (36) is located below the upper surface of the upper pier extrusion plate (13); the upper trimming plate (14) and the lower trimming plate are respectively provided with a trimming hole (37) and a first yielding hole (38) at corresponding positions, a trimming punch head (28) is arranged in the trimming hole (37) of the upper trimming plate (14), the upper end of the trimming punch head (28) is fixed on the upper die base, the trimming punch head (28) is matched with the trimming hole (37) in an up-and-down sliding manner, a first punching punch head (29) is arranged in the first yielding hole (38) of the upper trimming plate (14), the upper end of the first punching punch head (29) is fixed on the upper die base, and the first punching punch head (29) is matched with the first yielding hole (38) in an up-and-down sliding manner; the upper forming plate (15) is provided with a forming hole, a forming male die (39) is arranged on the lower forming plate (18) corresponding to the forming hole, a forming punch (30) is arranged in the forming hole, the upper end of the forming punch (30) is fixed on the upper die base, and the forming punch (30) is matched with the forming hole in an up-and-down sliding manner; the upper punching plate (16) and the lower punching plate (17) are respectively provided with a second abdicating hole, a second punching punch head (31) is arranged in the second abdicating hole of the upper punching plate (16), the upper end of the second punching punch head (31) is fixed on the upper die base, the second punching punch head (31) is matched with the second abdicating hole in an up-and-down sliding manner, a punching support head (40) is arranged in the second abdicating hole of the lower punching plate (17), and the punching support head (40) is tubular; the upper separating plate (33) and the lower separating plate (41) are respectively provided with a separating hole (42), a separating punch head (32) is arranged in the separating hole (42) of the upper separating plate (33), the upper end of the separating punch head (32) is fixed on the upper die base, and the separating punch head (32) is in up-and-down sliding fit with the separating hole (42); blanking channels are arranged on the lower die seats corresponding to the trimming holes (37) of the lower cutting plate, the first yielding holes (38) of the lower cutting plate, the punching support heads (40) and the separating holes (42) of the lower separating plate (41).

3. The continuous upsetting-extruding die for the vehicle door connecting piece as recited in claim 2, wherein the number of the drawing holes is not less than two, the drawing holes are sequentially arranged along the longitudinal direction of the upper die base and the lower die base, the diameter of the drawing holes is gradually reduced from the position close to the upper cutting plate (9) to the position far away from the upper cutting plate (9), and the distance from the drawing limiting head (35) to the upper surface of the lower drawing plate (23) is gradually increased from the position close to the upper cutting plate (9) to the position far away from the upper cutting plate (9); the number of the pier extrusion holes is not less than two, the aperture of each pier extrusion hole is gradually enlarged from being close to the upper stretching plate (10) to being far away from the upper stretching plate (10), and the distance from the pier extrusion limiting head (36) to the upper surface of the upper pier extrusion plate (13) is gradually reduced from being close to the upper stretching plate (10) to being far away from the upper stretching plate (10).

4. The continuous upsetting die for door links as recited in claim 2 or 3, wherein said upper die base comprises a horizontally arranged upper pallet (8); an upper template (6) is horizontally arranged below the upper supporting plate (8), the upper template (6) is connected with the upper supporting plate (8) through upper pad feet (7), upper clamping plates (4) are arranged above the upper cutting plate (9), the upper stretching plate (10), the upper pier extrusion plate (13), the upper trimming plate (14), the upper forming plate (15), the upper punch hole plate (16) and the upper separating plate (33), upper padding plates (5) are fixed on the upper plate surfaces of the upper clamping plates (4), and the upper plate surfaces of the upper padding plates (5) are fixed on the lower plate surfaces of the upper template (6); the lower die holder includes bottom plate (1) that the level was arranged, and there is lower bolster (3) of level arrangement above bottom plate (1), and lower bolster (3) link to each other with bottom plate (1) through underlay foot (2), lower cutting board (24), lower stretching plate (23), lower mound crowded board (20), lower trimming plate (19), lower forming plate (18), lower orifice plate (17) and lower separator plate (41) are all fixed on the lower template.

5. The continuous upsetting-extruding die for the vehicle door connecting piece as claimed in claim 4, wherein the upper cutting plate (9), the upper stretching plate (10), the upper upsetting-extruding plate (13), the upper trimming plate (14), the upper forming plate (15), the upper punching plate (16) and the upper supporting plate (8) and the upper die plate (6) above the upper separating plate (33) are horizontally arranged, the upper striking plate (11) is arranged in an up-and-down sliding manner, the upper die springs (12) are arranged between the upper plate surface of the upper striking plate (11) and the upper supporting plate (8), the lower plate surface of the upper striking plate (11) is fixedly provided with upper ejector rods which are vertically arranged, and the lower ends of the upper ejector rods sequentially penetrate through the upper die plate (6), the upper backing plate (5) and the upper clamping plate (4) and then correspond to the upper cutting plate (9), the upper stretching plate (10), the upper upsetting plate (13), the upper trimming plate (14), the upper forming plate (15), The upper punch plate (16) and the upper separation plate (33) are abutted, and the upper ejector rod is matched with the upper template (6), the upper backing plate (5) and the upper clamping plate (4) in a sliding manner.

6. The continuous upsetting-extruding die for the vehicle door connecting piece as claimed in claim 5, wherein a lower knockout plate (22) is horizontally arranged between the lower die plate (3) and the lower supporting plate (1), a lower die spring (21) is arranged between the lower knockout plate (22) and the lower supporting plate (1), a lower ejector rod is fixed on an upper plate surface of the lower knockout plate (22), the upper end of the lower ejector rod penetrates through the lower die plate (3) and extends above the upper die plate (6), and the lower ejector rod is in sliding fit with the lower die plate (3).

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