Stamping mechanism for automobile hinge and stamping method of stamping mechanism

Abstract

The invention relates to the field of automobile hinge machining, and discloses an automobile hinge stamping mechanism which comprises a stamping frame, a driving support is slidably mounted on the stamping frame, the bottom of the stamping frame is slidably connected with a bending seat through a first connecting guide rod, a first spring is arranged between the stamping frame and the bending seat, and a notch is formed in the bottom of the bending seat. A positioning seat is slidably connected into the notch through a second connecting guide rod, a second spring is arranged between the hole bottom of the notch and the upper end of the positioning seat, a die holder is arranged below the bending seat, the die holder and the bottom of the punching frame are in sliding guide fit in the vertical direction, and a third spring is arranged between the die holder and the bottom of the punching frame. According to the machining device, the hinge raw material can be sequentially bent to obtain the U-shaped hinge body, the bolt hole is obtained through first-time punching, the hinge shaft hole is obtained through second-time punching, and the reinforcing rib is obtained through bending, so that machining of the automobile hinge is achieved, and the machining efficiency and the machining quality are obviously improved.

Description

Technical Field

[0001] The invention relates to the field of automobile parts processing, specifically to the field of automobile hinge processing, and particularly to a stamping mechanism for automobile hinges and a stamping method thereof. Background Art

[0002] Automobile hinges are mainly used in the installation of automobile doors. Automobile hinges enable automobile doors to be rotatably connected to the car body. Automobile hinges need to be punched during the processing and manufacturing process. During the punching process, automobile hinges are prone to displacement and shaking, which makes it inconvenient to punch automobile hinges. In addition, when punching automobile hinges, different stamping equipment is required due to the different apertures of different holes. Therefore, the hinges need to be towed and moved between different stamping equipment, and repeated positioning is required. Not only is the efficiency relatively low, but the positional accuracy between holes is also prone to problems.

[0003] Based on the above, the present invention proposes a stamping mechanism and a stamping method for automobile hinges. Summary of the invention

[0004] In order to solve the problems mentioned in the above background, the present invention provides a stamping mechanism for automobile hinges and a stamping method thereof.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0006] A stamping mechanism for automobile hinges comprises a stamping frame, on which a driving bracket is slidably mounted and the sliding direction of the driving bracket is vertically arranged;

[0007] The bottom of the stamping frame is slidably connected to the bending seat through a vertically arranged connecting guide rod 1, and a spring 1 is arranged between the stamping frame and the bending seat;

[0008] A notch is provided at the bottom of the bending seat, a positioning seat is slidably connected in the notch through a vertically arranged connecting guide rod and a second spring is provided between the bottom of the notch and the upper end of the positioning seat. Initially, the bottom of the positioning seat is lower than the bottom of the bending seat.

[0009] A die base is provided at the bottom of the stamping frame, and the die base is located below the bending seat. The die base includes a base, and a sliding guide is formed between the base and the bottom of the stamping frame in the vertical direction, and a spring is provided between the two. A convex seat is extended from the upper end surface of the base, and the convex seat is located directly above the positioning seat;

[0010] The elastic coefficient of spring three is greater than the elastic coefficient of spring one and less than the elastic coefficient of spring two.

[0011] Furthermore, a connecting guide rod is arranged at the upper end of the press bending seat, the upper end of the connecting guide rod passes through a guide hole arranged at the bottom of the stamping frame, a limiting ring is arranged at the upper end of the connecting guide rod, a spring set is arranged on the outside of the connecting guide rod, and the upper and lower ends of the spring are respectively in contact with the bottom of the stamping frame and the upper end of the press bending seat.

[0012] Furthermore, a vertical punch head arranged vertically is provided at the bottom of the driving bracket, and a vertical mounting hole is provided in the bending seat. Initially, the lower end of the vertical punch head extends into the vertical mounting hole and is close to the lower opening of the vertical mounting hole;

[0013] The die base is provided with a vertical avoidance hole for avoiding the vertical punching head.

[0014] Furthermore, a mounting groove is provided on the lower end surface of the mold base, and the notch of the mounting groove is close to the upper end of the convex seat. When the hinge material is placed on the upper end of the convex seat, two side surfaces of the convex seat along the length direction of the hinge material are respectively provided with a horizontal mounting hole connected to the mounting groove;

[0015] A slide seat is slidably installed in the installation groove, and the sliding direction of the slide seat is parallel to the axial center line direction of the horizontal installation hole. Two slide seats are arranged along their own sliding direction, and a horizontal punch head is respectively arranged on the opposite sides of the two slide seats. The outer sleeve of the horizontal punch head is provided with a spring four located between the wall of the installation groove and the slide seat. Initially, the end of the horizontal punch head is located in the corresponding horizontal installation hole;

[0016] The bending seat is provided with a transverse avoidance hole for avoiding the transverse punching head.

[0017] Furthermore, a driving seat is slidably installed in the installation groove along the vertical direction, and a spring five is arranged between the driving seat and the installation groove, and the elastic force of the spring five is used to drive the driving seat to move downward;

[0018] The upper end of the driving seat is composed of two inclined planes 1, and the distance between the two inclined planes 1 decreases along the vertical direction from bottom to top. The two sides of the bottom of the two slide seats facing each other are each provided with an inclined plane 2. Initially, the two inclined planes 1 are respectively in contact with the inclined planes 2 on the two slide seats;

[0019] The punching frame is provided with a limiting seat located below the driving seat.

[0020] Furthermore, a receiving hole is provided on the lower end surface of the mold base, a bending seat is slidably installed in the receiving hole along the vertical direction and a spring six is ​​provided between the bending seat and the receiving hole, the elastic force of the spring six is ​​used to drive the bending seat to move downward, and the bottom of the bending seat extends out of the receiving hole and is located above the limit seat.

[0021] Furthermore, a positioning pin is arranged at the upper end of the protruding seat, and a positioning groove is arranged at the bottom of the positioning seat, and the positioning groove is coaxial with the positioning pin.

[0022] A stamping method for a stamping mechanism for automobile hinges:

[0023] Step 1: Place the hinge material on the upper end surface of the convex seat;

[0024] Step 2: The driving bracket moves downward. During this process, the positioning seat first contacts the hinge material. After that, the positioning seat does not move, the spring 2 is compressed, and the driving bracket continues to drive the bending seat downward through the spring 1. Through the cooperation of the bending seat and the die seat, the hinge material is bent into a U shape.

[0025] Step 3: The driving bracket continues to move downward. During this process, the bending seat does not move. Once the spring is compressed, the vertical punch head moves downward with the driving bracket to punch the bolt hole b of the hinge raw material.

[0026] Step 4: The driving bracket continues to move downward. During this process, the bending seat, positioning seat and mold base are driven downward by the driving bracket, and the spring three is compressed. During the downward movement of the mold base:

[0027] The driving seat will come into contact with the limit seat and be restricted from moving downward. Therefore, relative to the die seat, the driving seat will move upward relatively. The spring five is compressed. Under the cooperation of the inclined plane one and the inclined plane two, the two slide seats can be driven to move away from each other. The spring four is compressed, and the slide seat will move with the horizontal punch head, thereby realizing the punching of the hinge shaft hole c of the hinge raw material.

[0028] At the same time, the bending seat will also come into contact with the limiting seat. Relative to the die base, the bending seat will move upward relatively, the spring six will be compressed, and the upward movement of the bending seat will bend the hinge material, thereby obtaining the reinforcing rib d.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present application can use a stamping device to sequentially bend the hinge raw material to obtain a U-shaped hinge body, punch a bolt hole for the first time, punch a hinge shaft hole for the second time, and bend to obtain a reinforcing rib, thereby realizing the processing of the automobile hinge. In this process, there is no need to shift the position of the hinge raw material, thereby achieving the following effects: there is no need to move the hinge raw material, so the processing efficiency is increased. In particular, the present application realizes the above-mentioned four processing sub-actions by driving the bracket to move downward, which can make the connection between the four processing sub-actions smooth and without delay, thereby further improving the processing efficiency of the automobile hinge; since the hinge raw material does not need to be moved, the position accuracy between the bolt hole, the hinge shaft hole and the reinforcing rib can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the hinge raw material and the hinge after processing;

[0032] Figure 2 The structure of the present invention is schematically shown Figure 1 ;

[0033] Figure 3 The structure of the present invention is schematically shown Figure 2 ;

[0034] Figure 4 It is a schematic diagram of the driving bracket, the bending seat and the vertical punching head;

[0035] Figure 5 It is a schematic diagram of the punching frame and the die base;

[0036] Figure 6 It is a side view of the mold base and the limit seat;

[0037] Figure 7 Sectional view of the mold base Figure 1 ;

[0038] Figure 8 Sectional view of the mold base Figure 2 ;

[0039] Fig. 9 Sectional view of the mold base Figure 3 .

[0040] The reference numerals in the accompanying drawings are:

[0041] 100. Punching frame; 101. Driving bracket; 102. Bending seat; 103. Positioning seat; 1031. Positioning groove; 104. Die base; 1041. Positioning pin; 105. Spring one; 106. Spring two; 107. Spring three; 108. Connecting guide rod one; 109. Vertical punch head; 110. Limiting seat; 111. Sliding seat; 112. Horizontal punch head; 113. Spring four; 114. Driving seat; 115. Spring five; 116. Bending seat; 117. Spring six. DETAILED DESCRIPTION

[0042] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0043] Reference Figure 1 , Figure 1 The picture above is the hinge material. Figure 1The picture below is a processed hinge, wherein the processed hinge is in a U shape as a whole, a is a positioning hole, b and c are holes formed by stamping, b is a bolt hole, c is a hinge shaft hole, and d is a reinforcing rib. Therefore, the present invention can achieve the following through a stamping mechanism: press-bending the hinge raw material, stamping the press-bent raw material twice to obtain hole b and hole c, and bending the raw material after the two stampings to obtain reinforcing rib d, thereby completing the processing of the automobile hinge.

[0044] Reference Figure 1-Figure 9 A stamping mechanism for automobile hinges includes a stamping frame 100, on which a driving bracket 101 is slidably mounted and the sliding direction of the driving bracket 101 is vertically arranged. The driving bracket 101 can be driven to move by existing technology, such as existing hydraulic technology, which will not be described in detail.

[0045] The bottom of the stamping frame 100 is slidably connected to the bending seat 102 through a vertically arranged connecting guide rod 108, and a spring 105 is arranged between the stamping frame 100 and the bending seat 102. Furthermore, the connecting guide rod 108 is arranged at the upper end of the bending seat 102, and the upper end of the connecting guide rod 108 passes through a guide hole arranged at the bottom of the stamping frame 100. A limiting ring is arranged at the upper end of the connecting guide rod 108. The spring 105 is sleeved on the outside of the connecting guide rod 108, and the upper and lower ends of the spring 105 are respectively in contact with the bottom of the stamping frame 100 and the upper end of the bending seat 102.

[0046] A notch is provided at the bottom of the bending seat 102, and a positioning seat 103 is slidably connected to the notch through a vertically arranged connecting guide rod 2, and a spring 2 106 is provided between the bottom of the notch and the upper end of the positioning seat 103. Initially, the bottom of the positioning seat 103 is lower than the bottom of the bending seat 102. The connection relationship between the connecting guide rod 2, the positioning seat 103 and the bending seat 102 is consistent with the connection relationship between the connecting guide rod 1 108, the bending seat 102 and the driving bracket 101, and will not be elaborated on.

[0047] A die base 104 is provided at the bottom of the stamping frame 100, and the die base 104 is located below the bending seat 102. The die base 104 includes a base, and a sliding guide fit is formed between the base and the bottom of the stamping frame 100 in the vertical direction, and a spring 3 107 is provided between the two. A convex seat extends from the upper end surface of the base, and the convex seat is located directly above the positioning seat 103.

[0048] The elastic coefficient of spring three 107 is greater than that of spring one 105 and less than that of spring two 106, and in the process of the hinge material being bent into a U shape, spring one 105 is not compressed or the compression amount is very small.

[0049] Preferably, a positioning pin 1041 is disposed at the upper end of the protruding seat, and a positioning groove 1031 is disposed at the bottom of the positioning seat 103 , and the positioning groove 1031 is coaxial with the positioning pin 1041 .

[0050] Initially, a positioning hole a is punched on the hinge material by the existing technology, and then the hinge material is placed on the upper end surface of the convex seat by manual or existing mechanical arm technology, and the positioning pin 1041 is inserted into the positioning hole a;

[0051] Then, the driving bracket 101 is driven downward by the existing hydraulic technology, the positioning seat 103 first contacts the hinge material, and the upper end of the positioning pin 1041 is inserted into the positioning groove 1031 to play a positioning role. After that, the positioning seat 103 does not move, the spring 2 106 is compressed, and the driving bracket 101 continues to drive the bending seat 102 downward through the spring 105, and the hinge material is bent into a U shape through the cooperation of the bending seat 102 and the mold base 104.

[0052] Reference Figure 4 A vertical punch head 109 is vertically arranged at the bottom of the driving bracket 101. The vertical punch head 109 is provided with four bolt holes b corresponding to the automobile hinge. A vertical mounting hole located below the vertical punch head 109 is provided in the bending seat 102. Initially, the lower end of the vertical punch head 109 extends into the vertical mounting hole and is close to the lower hole opening of the vertical mounting hole.

[0053] After the hinge material is bent into a U shape, the driving bracket 101 continues to move downward. During this process, the bending seat 102 does not move, the spring 105 is compressed, and the vertical punch head 109 moves downward with the driving bracket 101 to punch the bolt hole b of the hinge material. A vertical avoidance hole for avoiding the vertical punch head 109 is provided on the die base 104.

[0054] Reference Figure 6 and Figure 7 The lower end surface of the mold base 104 is provided with a mounting groove, the notch of the mounting groove is close to the upper end of the convex seat, when the hinge material is placed on the upper end of the convex seat, the two side surfaces of the convex seat along the length direction of the hinge material are respectively provided with a horizontal mounting hole connected with the mounting groove.

[0055] A slide 111 is slidably installed in the mounting groove, and the sliding direction of the slide 111 is parallel to the axial centerline direction of the horizontal mounting hole. Two slides 111 are arranged along their own sliding direction, and a horizontal punch head 112 is respectively arranged on the opposite sides of the two slides 111. The outer sleeve of the horizontal punch head 112 is provided with a spring 113 located between the wall of the mounting groove and the slide 111. Initially, the end of the horizontal punch head 112 is located in the corresponding horizontal mounting hole.

[0056] A driving seat 114 is also slidably installed in the installation groove along the vertical direction, and a spring 5 115 is arranged between the driving seat 114 and the installation groove. The elastic force of the spring 5 115 is used to drive the driving seat 114 to move downward.

[0057] The upper end of the driving seat 114 is composed of two inclined planes 1, and the distance between the two inclined planes 1 decreases along the vertical direction from bottom to top. The two sides of the bottom of the two slide seats 111 facing each other are each provided with an inclined plane 2. Initially, the two inclined planes 1 are respectively in contact with the inclined planes 2 on the two slide seats 111.

[0058] The stamping frame 100 is provided with a limiting seat 110 located below the driving seat 114 .

[0059] After the bolt hole b of the hinge material is punched, the driving bracket 101 continues to move downward. At this time, the bending seat 102, the positioning seat 103 and the die seat 104 are driven downward by the driving bracket 101, and the spring three 107 is compressed. During the downward movement of the die seat 104, the driving seat 114 will contact the limit seat 110 and be restricted from moving downward. Therefore, relative to the die seat 104, the driving seat 114 will move upward relatively. The spring five 115 is compressed. With the cooperation of the inclined plane one and the inclined plane two, the two slides 111 can be driven to move away from each other. The spring four 113 is compressed, and the slide 111 will move with the horizontal punch head 112, thereby realizing the punching of the hinge shaft hole c of the hinge material. The bending seat 102 is provided with a horizontal avoidance hole for avoiding the horizontal punch head 112.

[0060] Reference Figure 8 and Fig. 9 The lower end surface of the mold base 104 is provided with a receiving hole. When the hinge material is placed on the upper end of the convex seat, the portion of the hinge material corresponding to the reinforcing rib d is located above the receiving hole.

[0061] A bending seat 116 is slidably installed in the accommodating hole along the vertical direction and a spring six 117 is arranged between the bending seat 116 and the accommodating hole. The elastic force of the spring six 117 is used to drive the bending seat 116 to move downward. The bottom of the bending seat 116 extends out of the accommodating hole and is located above the limiting seat 110.

[0062] During the punching process of the hinge shaft hole c in the hinge material, the bending seat 116 will also come into contact with the limiting seat 110. Relative to the mold base 104, the bending seat 116 will move upward relatively, the spring six 117 will be compressed, and the upward movement of the bending seat 116 will bend the hinge material, thereby obtaining the reinforcing rib d.

[0063] At this point, the hinge raw material processing is completed, and then the driving bracket 101 starts to move upward, and each component is reset in order under the elastic force of the corresponding spring.

[0064] A stamping method for a stamping mechanism for automobile hinges:

[0065] Step 1: punch a positioning hole a on the hinge material by existing technology, then place the hinge material on the upper end surface of the convex seat manually or by existing mechanical arm technology, and insert the positioning pin 1041 into the positioning hole a;

[0066] Step 2: The driving bracket 101 is driven downward by the existing hydraulic technology, the positioning seat 103 first contacts the hinge raw material, and the upper end of the positioning pin 1041 is inserted into the positioning groove 1031 to play a positioning role. After that, the positioning seat 103 does not move, the spring 2 106 is compressed, and the driving bracket 101 continues to drive the bending seat 102 downward through the spring 105, and the hinge raw material is bent into a U shape through the cooperation of the bending seat 102 and the die seat 104;

[0067] Step 3: The driving bracket 101 continues to move downward, the bending seat 102 does not move, the spring 105 is compressed, and the vertical punching head 109 moves downward with the driving bracket 101 to punch the bolt hole b of the hinge material;

[0068] Step 4: The driving bracket 101 continues to move downward, and the bending seat 102, the positioning seat 103 and the mold base 104 are driven downward by the driving bracket 101. The spring 3 107 is compressed. During the downward movement of the mold base 104:

[0069] The driving seat 114 will come into contact with the limiting seat 110 and be restricted from moving downward. Therefore, relative to the die seat 104, the driving seat 114 will move upward relatively, and the spring 5 115 will be compressed. Under the cooperation of the inclined surface 1 and the inclined surface 2, the two slide seats 111 can be driven to move away from each other. The spring 4 113 is compressed, and the slide seat 111 will move with the horizontal punch head 112, thereby realizing the punching of the hinge shaft hole c of the hinge raw material;

[0070] At the same time, the bending seat 116 will also come into contact with the limiting seat 110. Relative to the mold base 104, the bending seat 116 will move upward relatively, the spring six 117 will be compressed, and the upward movement of the bending seat 116 will bend the hinge material, thereby obtaining the reinforcing rib d.

[0071] From the above process description, we can know that:

[0072] The present application can use a stamping device to sequentially bend the hinge raw material to obtain a U-shaped hinge body, punch a bolt hole for the first time, punch a hinge shaft hole for the second time, and bend to obtain a reinforcing rib, thereby realizing the processing of the automobile hinge. In this process, there is no need to shift the position of the hinge raw material, thereby achieving the following effects: there is no need to move the hinge raw material, so the processing efficiency is increased. In particular, the present application realizes the above-mentioned four processing sub-actions by driving the bracket to move downward, which can make the connection between the four processing sub-actions smooth and without delay, thereby further improving the processing efficiency of the automobile hinge; since the hinge raw material does not need to be moved, the position accuracy between the bolt hole, the hinge shaft hole and the reinforcing rib can be effectively improved.

[0073] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A stamping mechanism for automobile hinges, comprising a stamping frame (100), characterized in that: A driving bracket (101) is slidably mounted on the punching frame (100), and the sliding direction of the driving bracket (101) is arranged vertically; The bottom of the punching frame (100) is slidably connected to a bending seat (102) via a vertically arranged connecting guide rod (108), and a spring (105) is provided between the punching frame (100) and the bending seat (102); A notch is provided at the bottom of the bending seat (102), a positioning seat (103) is slidably connected in the notch via two vertically arranged connecting guide rods, and a second spring (106) is provided between the bottom of the notch and the upper end of the positioning seat (103), and initially, the bottom of the positioning seat (103) is lower than the bottom of the bending seat (102); A die base (104) is provided at the bottom of the punching frame (100), and the die base (104) is located below the bending seat (102). The die base (104) includes a base, and a sliding guide is formed between the base and the bottom of the punching frame (100) in the vertical direction, and a spring (107) is provided between the two. A convex seat extends from the upper end surface of the base, and the convex seat is located directly above the positioning seat (103); The elastic coefficient of spring three (107) is greater than the elastic coefficient of spring one (105) and less than the elastic coefficient of spring two (106).

2. A stamping mechanism for automobile hinges according to claim 1, characterized in that: A connecting guide rod (108) is arranged at the upper end of the bending seat (102), and the upper end of the connecting guide rod (108) passes through a guide hole arranged at the bottom of the punching frame (100). A limit ring is arranged at the upper end of the connecting guide rod (108). A spring (105) is sleeved on the outside of the connecting guide rod (108), and the upper and lower ends of the spring (105) are respectively in contact with the bottom of the punching frame (100) and the upper end of the bending seat (102).

3. The stamping mechanism for automobile hinges according to claim 1, characterized in that: A vertical punch head (109) is arranged vertically at the bottom of the driving bracket (101), and a vertical mounting hole is arranged in the bending seat (102). Initially, the lower end of the vertical punch head (109) extends into the vertical mounting hole and is close to the lower hole of the vertical mounting hole; The die base (104) is provided with a vertical avoidance hole for avoiding the vertical punching head (109).

4. A stamping mechanism for automobile hinges according to claim 3, characterized in that: The lower end surface of the mold base (104) is provided with a mounting groove, the notch of the mounting groove is close to the upper end of the convex seat, and when the hinge material is placed on the upper end of the convex seat, two side surfaces of the convex seat along the length direction of the hinge material are respectively provided with a transverse mounting hole connected with the mounting groove; A slide seat (111) is slidably installed in the installation groove, the sliding direction of the slide seat (111) is parallel to the axial center line direction of the horizontal installation hole, two slide seats (111) are arranged along their own sliding direction, and a horizontal punch head (112) is respectively arranged on the opposite sides of the two slide seats (111), and the outer sleeve of the horizontal punch head (112) is provided with a spring four (113) located between the wall of the installation groove and the slide seat (111), and initially, the end of the horizontal punch head (112) is located in the corresponding horizontal installation hole; The bending seat (102) is provided with a transverse avoidance hole for avoiding the transverse punching head (112).

5. A stamping mechanism for automobile hinges according to claim 4, characterized in that: A driving seat (114) is slidably installed in the installation groove along the vertical direction, and a spring five (115) is arranged between the driving seat (114) and the installation groove, and the elastic force of the spring five (115) is used to drive the driving seat (114) to move downward; The upper end of the driving seat (114) is composed of two inclined planes 1, the distance between the two inclined planes 1 decreases along the vertical direction from bottom to top, and the bottom sides of the two slide seats (111) facing each other are each provided with an inclined plane 2, and initially, the two inclined planes 1 are respectively in contact with the inclined planes 2 on the two slide seats (111); The punching frame (100) is provided with a limiting seat (110) located below the driving seat (114).

6. A stamping mechanism for automobile hinges according to claim 5, characterized in that: The lower end surface of the mold base (104) is provided with a receiving hole, in which a bending seat (116) is slidably installed along the vertical direction, and a spring six (117) is provided between the bending seat (116) and the receiving hole, and the elastic force of the spring six (117) is used to drive the bending seat (116) to move downward, and the bottom of the bending seat (116) extends out of the receiving hole and is located above the limiting seat (110).

7. The stamping mechanism for automobile hinges according to claim 1, characterized in that: A positioning pin (1041) is arranged at the upper end of the convex seat, and a positioning groove (1031) is arranged at the bottom of the positioning seat (103), wherein the positioning groove (1031) is coaxial with the positioning pin (1041).

8. A stamping method for a stamping mechanism for automobile hinges as claimed in claim 6, characterized in that: The steps include: Step 1: Place the hinge material on the upper end surface of the convex seat; Step 2: driving the support (101) to move downward, during which the positioning seat (103) first contacts the hinge material, then the positioning seat (103) remains stationary, the second spring (106) is compressed, and the driving support (101) continues to drive the bending seat (102) downward via the first spring (105), and the hinge material is bent into a U shape through the cooperation between the bending seat (102) and the die seat (104); Step 3: The driving bracket (101) continues to move downward. During this process, the bending seat (102) remains stationary, the spring 1 (105) is compressed, and the vertical punch head (109) moves downward along with the driving bracket (101) to punch the bolt hole b of the hinge material. Step 4: The driving bracket (101) continues to move downward. During this process, the bending seat (102), the positioning seat (103) and the mold base (104) are driven downward by the driving bracket (101), and the spring three (107) is compressed. During the downward movement of the mold base (104): The driving seat (114) will come into contact with the limiting seat (110) and be restricted from moving downward. Therefore, relative to the die seat (104), the driving seat (114) will move upward relatively, and the spring five (115) will be compressed. Under the cooperation of the inclined surface one and the inclined surface two, the two slide seats (111) can be driven to move away from each other. The spring four (113) will be compressed, and the slide seat (111) will move with the horizontal punch head (112), thereby realizing the punching of the hinge shaft hole c of the hinge raw material; At the same time, the bending seat (116) will also come into contact with the limiting seat (110), and relative to the mold base (104), the bending seat (116) will move upward relatively, the spring six (117) will be compressed, and the upward movement of the bending seat (116) will bend the hinge material, thereby obtaining the reinforcing rib d.

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