A multi-station bending die for bending automotive sheet metal parts

Abstract

This invention discloses a multi-station bending die for bending automotive sheet metal parts, belonging to the field of automotive sheet metal production technology. It includes a base on which a punching assembly, a vertical drive assembly, a cutting assembly, a first bending assembly, and a second bending assembly are mounted. The punching assembly includes a punching seat and two sets of punching cutters spaced apart. The two sets of first bending assemblies are located on one side of the two sets of punching cutters, respectively, and are used to bend two sets of parts. The two sets of second bending assemblies are located on one side of the two sets of first bending assemblies, respectively, and are used to fold the edges of the two sets of parts. The cutting assembly is located on one side of the second bending assemblies and is used to cut the two sets of parts for blanking. Through this method, the invention integrates punching, bending, and folding equipment, enabling simultaneous multi-station synchronous punching, bending, folding, and cutting processes on a single machine, thus improving the processing efficiency of automotive sheet metal parts.

Description

Technical Field

[0001] This invention relates to the field of automotive sheet metal production technology, specifically to a multi-station bending die for bending automotive sheet metal components. Background Technology

[0002] The production process of automotive sheet metal parts involves punching, bending, and folding processes. Currently, each process is carried out using separate equipment. For example, the sheet metal is first processed into several sheet metal parts by punching equipment, then the sheet metal parts are transported to bending equipment, where they are bent at a 90-degree angle, and then transported to folding equipment, where they are folded.

[0003] The above method requires the use of different equipment to process automotive sheet metal parts separately, making it difficult to integrate the equipment and achieve simultaneous processing at multiple workstations. Therefore, the processing efficiency can be further improved.

[0004] Based on this, the present invention designs a multi-station bending mold for bending automotive sheet metal parts to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a multi-station bending die for bending automotive sheet metal parts.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A multi-station bending die for bending automotive sheet metal parts includes a base, on which a punching component, a vertical drive component, a cutting component, a first bending component, and a second bending component are mounted; the drive end of the vertical drive component is connected to the punching component, the cutting component, the first bending component, and the second bending component respectively.

[0008] The punching assembly includes a punching seat and two sets of symmetrically arranged punching cutters with a certain distance between them; the punching seat is fixedly connected to the upper end of the base, and both sets of punching cutters are fixedly connected to the driving end of the vertical drive assembly, with the open ends of the two sets of punching cutters facing each other; several punching rods are fixedly connected to the middle of the punching cutters, and the punching seat has a punching cutter movable groove for inserting the punching cutter, and a punching rod movable groove for inserting the punching rod.

[0009] The first bending assembly is provided in two sets, with the two sets of first bending assemblies located on one side of the two sets of punching tools, respectively, and used to bend the two sets of parts; the two sets of first bending assemblies are symmetrically arranged on both sides of the parts to be processed.

[0010] The second bending assembly is also provided in two sets. The two sets of second bending assemblies are located on one side of the two sets of first bending assemblies, and are used to bend the edges of the two sets of parts respectively. The two sets of second bending assemblies are symmetrically arranged on both sides of the parts to be processed.

[0011] The cutting component is located on one side of the second bending component and is used to cut the two sets of parts.

[0012] Furthermore, the base is provided with discharge holes at positions corresponding to the movable slots of the punching tool and the punching rod to facilitate the cutting and unloading of waste materials.

[0013] Furthermore, the first bending assembly includes a guide rod, a first bending seat, a first horizontal pressure plate, a first spring, a first side pressure plate, and a mounting top plate; the first bending seat is fixedly connected to the upper end of the base, the lower outer side of the mounting top plate is fixedly connected to the first side pressure plate, the four corners of the mounting top plate are slidably connected to guide rods, the lower ends of the guide rods are fixedly connected to the first horizontal pressure plate, the first horizontal pressure plate is located between the two first side pressure plates, the guide rods are equipped with a first spring, the first spring is located between the first horizontal pressure plate and the mounting top plate, and the mounting top plate is fixedly connected to the driving end of the vertical drive assembly.

[0014] Furthermore, the second bending assembly includes a mounting bracket, a second cylinder, a first wedge block, a fixing block, a guide rail, a second spring, a connecting fixing block, a second wedge block, a first wedge block connecting plate, a second side pressure plate, a third side pressure plate, a second bending seat, a third side pressure plate connecting plate, a horizontal plate, and an auxiliary support block; the second bending seat is fixedly connected to the upper end of the base, the upper end of the first wedge block connecting plate is fixedly connected to the driving end of the vertical drive assembly, and the lower left and right sides of the first wedge block connecting plate are both fixedly connected to second side pressure plates for bending the upper left and right sides of the part, the outer side of the first wedge block connecting plate is fixedly connected to a first wedge block, the lower end of the first wedge block is in contact with the inclined surface of one end of the second wedge block, and the other end of the second wedge block is fixedly connected to the third side pressure plate connecting plate. The lower ends of the third side pressure plate connecting plates are slidably connected to the guide rail. The left and right sides of the third side pressure plate connecting plates near the part are fixedly connected to third side pressure plates for folding the lower left and right sides of the part. The guide rail is fixedly installed on the upper end of the base. Connecting fixing blocks are fixedly connected to both sides of the second wedge block. The connecting fixing blocks are fixedly connected to one end of the second spring, and the other end of the second spring is fixedly connected to the fixing blocks. The fixing blocks are fixedly installed on the upper end of the base, and the fixing blocks are located outside the connecting fixing blocks. Two auxiliary support blocks are located below the two sets of parts to be folded. The lower ends of the auxiliary support blocks are fixed to the horizontal plate. The horizontal plate is fixedly connected to the output end of the second cylinder. The second cylinder is fixedly connected to the mounting bracket. The mounting bracket is fixedly connected to the bottom of the base. The auxiliary support blocks move through the base.

[0015] Furthermore, the cutting assembly includes a waste material guide trough, a tool mounting plate, a finished product cutter, and a defective product cutter; the upper end of the tool mounting plate is fixedly connected to the driving end of the vertical drive assembly, two finished product cutters are fixedly mounted on the front and rear sides of the lower end of the tool mounting plate, and a defective product cutter is fixedly mounted on the right side of the lower end of the tool mounting plate; one end of the waste material guide trough is located below the defective product cutter, and one end of each of the two finished product guide troughs is located below the two finished product cutters respectively; the second bending seat extends to the lower part of the tool mounting plate.

[0016] Furthermore, the distance between the two finished product cutters is the same as the distance between the two sets of punching cutters, and the positions of the two finished product cutters are set vertically to correspond to the cutting positions of the parts.

[0017] Furthermore, the waste material guide trough and the two finished product guide troughs are all fixedly installed on the base in an inclined manner.

[0018] Furthermore, the vertical drive assembly includes a connecting frame, a sliding plate, a first electric push rod, and guide posts; several first electric push rods are fixedly installed on the top plate, and the output ends of the first electric push rods are fixedly connected to the sliding plate below the top plate; guide posts are fixedly connected to the four corners of the upper end of the base, and the upper ends of the guide posts are fixedly connected to the four corners of the lower end of the top plate; the guide posts pass through the four corners of the sliding plate and are slidably connected to the sliding plate; a connecting frame is fixedly connected to the lower end of the sliding plate, and the connecting frame is connected to the punching assembly, the cutting assembly, the first bending assembly, and the second bending assembly.

[0019] Beneficial effects

[0020] The punching assembly (2) of the present invention can punch two sets of parts at once, and can ensure that the equally spaced feeding mechanism can synchronously drive the punching assembly (2) and the material of the subsequent process to move synchronously during the conveying of the plate.

[0021] The first bending component (5) of the present invention can bend the part after pressing it, ensuring that the part is fixed in position during bending and avoiding displacement of the part;

[0022] The second bending assembly (6) of the present invention can ensure that when the upper left and right sides of the part are bent, the lower left and right sides of the part are bent simultaneously.

[0023] The cutting component (4) of the present invention can ensure that the waste material is cut and cut simultaneously when the parts are cut and cut.

[0024] This invention integrates punching, bending, and folding equipment, enabling simultaneous punching, bending, folding, and cutting processes at multiple stations on a single machine, thereby improving the processing efficiency of automotive sheet metal parts.

[0025] This invention can produce two sets of parts at once, further improving the processing efficiency of automotive sheet metal parts. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0027] Figure 1 This invention relates to a three-dimensional main structure of a multi-station bending die for bending automotive sheet metal parts. Figure 1 ;

[0028] Figure 2 This is a front view of a multi-station bending die structure for bending automotive sheet metal parts according to the present invention;

[0029] Figure 3 This invention relates to a three-dimensional main structure of a multi-station bending die for bending automotive sheet metal parts. Figure 2 ;

[0030] Figure 4 For along Figure 2 A sectional view along the AA direction;

[0031] Figure 5 For along Figure 2 BB direction sectional view;

[0032] Figure 6 For along Figure 2 A cross-sectional view along the CC direction;

[0033] Figure 7 For along Figure 2 DD-direction sectional view;

[0034] Figure 8 For along Figure 2 EE direction sectional view;

[0035] Figure 9 This is a schematic diagram of the structure of the machined part.

[0036] The labels in the diagram represent:

[0037] 1. Base 2. Punching Assembly 21. Punching Seat 22. Punching Tool 23. Punching Rod 24. Discharge Hole 25. Punching Tool Movable Slot 26. Punching Rod Movable Slot 3. Vertical Drive Assembly 31. Connecting Frame 32. Slide Plate 33. First Electric Push Rod 34. Guide Post 4. Cutting Assembly 41. Finished Product Guide Slot 42. Scrap Material Guide Slot 43. Tool Mounting Plate 44. Finished Product Cutter 45. Defective Product Cutter 5. First Bending Assembly 51. Guide Rod 52. First Bending Seat 53. ... 54. Horizontal pressure plate 55. First spring 56. First side pressure plate 57. Mounting top plate 68. Second bending assembly 69. Mounting bracket 60. Second cylinder 61. First wedge block 62. Fixing block 63. Guide rail 64. Second spring 65. Connecting fixing block 66. Second wedge block 67. First wedge block connecting plate 68. Second side pressure plate 69. Third side pressure plate connecting plate 60. Second side pressure plate 61. Third side pressure plate connecting plate 61. Horizontal plate 61. Auxiliary support block 61. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] The present invention will be further described below with reference to the embodiments.

[0040] Example 1

[0041] Please refer to the instruction manual appendix. Figure 1-9 A multi-station bending die for bending automotive sheet metal parts includes a base 1, on which a punching assembly 2, a vertical drive assembly 3, a cutting assembly 4, a first bending assembly 5, and a second bending assembly 6 are mounted. The driving end of the vertical drive assembly 3 is connected to the punching assembly 2, the cutting assembly 4, the first bending assembly 5, and the second bending assembly 6, and the vertical drive assembly 3 synchronously drives the movement of the punching assembly 2, the cutting assembly 4, the first bending assembly 5, and the second bending assembly 6.

[0042] A feeding mechanism with equal spacing is provided on one side of the punching assembly 2. The feeding mechanism with equal spacing is used to feed the sheet metal. It adopts the existing structure and will not be described in detail here.

[0043] The punching assembly 2 includes a punching base 21 and two sets of symmetrically arranged punching cutters 22 with a certain distance between them. The punching base 21 is fixedly connected to the upper end of the base 1. Both sets of punching cutters 22 are fixedly connected to the driving end of the vertical drive assembly 3. The open ends of the two sets of punching cutters 22 are arranged opposite to each other. Two sets of parts can be punched at one time. By setting the distance between the two sets of punching cutters 22, it can be ensured that the equal-distance feeding mechanism can synchronously drive the punching assembly 2 and the material of the subsequent process to move synchronously during the conveying of the plate.

[0044] A number of punching rods 23 are fixedly connected to the middle of the punching cutter 22. The punching base 21 has a punching cutter movable groove 25 that is inserted into the punching cutter 22. The punching base 21 has a punching rod movable groove 26 that is inserted into the punching rod 23. The base 1 has a discharge hole 24 that is opened at the position corresponding to the punching cutter movable groove 25 and the punching rod movable groove 26 to facilitate the cutting of waste material.

[0045] The sheet metal is placed on the upper part of the punching base 21. The vertical drive assembly 3 drives the punching cutter 22 to move downward to punch the sheet metal. The punching cutter 22 drives the punching rod 23 to move downward to punch the sheet metal. The punching cutter 22 and the punching rod 23 are respectively inserted into the punching cutter movable groove 25 and the punching rod movable groove 26. The punching waste is discharged through the discharge hole 24 on the base 1.

[0046] The first bending assembly 5 is provided in two sets. The two sets of first bending assemblies 5 are located on one side of the two sets of punching cutters 22, and are used to bend the two sets of parts respectively. The two sets of first bending assemblies 5 are symmetrically arranged on both sides of the parts to be processed.

[0047] The first bending assembly 5 includes a guide rod 51, a first bending seat 52, a first horizontal pressure plate 53, a first spring 54, a first side pressure plate 55, and a mounting top plate 56. The first bending seat 52 is fixedly connected to the upper end of the base 1, and the punched parts are transferred to the first bending seat 52. The lower outer side of the mounting top plate 56 is fixedly connected to the first side pressure plate 55. The four corners of the mounting top plate 56 are slidably connected to the guide rod 51. The lower end of the guide rod 51 is fixedly connected to the first horizontal pressure plate 53, which is located between the two first side pressure plates 55. The first spring 54 is installed on the guide rod 51, which is located between the first horizontal pressure plate 53 and the mounting top plate 56. The mounting top plate 56 is fixedly connected to the driving end of the vertical drive assembly 3. The length of the guide rod 51 is sufficient to support the distance that the first horizontal pressure plate 53 moves downward due to gravity.

[0048] The punched part is supported by the first bending seat 52. The vertical drive assembly 3 drives the mounting top plate 56 to move downward. The mounting top plate 56 drives the first horizontal pressure plate 53 to move downward. The first horizontal pressure plate 53 contacts the part due to gravity. As the first horizontal pressure plate 53 moves downward, the pressure of the first horizontal pressure plate 53 on the first horizontal pressure plate 53 gradually increases, pressing the part tightly to ensure that the part is fixed in position during bending and to prevent the part from shifting. At the same time, the mounting top plate 56 drives the first side pressure plate 55 to move downward. The two first side pressure plates 55 are located above the part that needs to be bent. The first side pressure plates 55 move downward to bend the part.

[0049] The second bending assembly 6 is also provided in two sets. The two sets of second bending assemblies 6 are located on one side of the two sets of first bending assemblies 5, and are used to bend the edges of the two sets of parts respectively. The two sets of second bending assemblies 6 are symmetrically arranged on both sides of the parts to be processed.

[0050] The second bending assembly 6 includes a mounting bracket 61, a second cylinder 62, a first wedge block 63, a fixing block 64, a guide rail 65, a second spring 66, a connecting fixing block 67, a second wedge block 68, a first wedge block connecting plate 69, a second side pressure plate 610, a third side pressure plate 611, a second bending seat 612, a third side pressure plate connecting plate 613, a horizontal plate 614, and an auxiliary support block 615.

[0051] The second bending seat 612 is fixedly connected to the upper end of the base 1. The bent part is transferred to the second bending seat 612. The upper end of the first wedge block connecting plate 69 is fixedly connected to the driving end of the vertical drive assembly 3. The lower left and right sides of the first wedge block connecting plate 69 are fixedly connected to second side pressure plates 610 for bending the upper left and right sides of the part. The outer side of the first wedge block connecting plate 69 is fixedly connected to the first wedge block 63. The lower end of the first wedge block 63 is in contact with the inclined surface of one end of the second wedge block 68. The other end of the second wedge block 68 is fixedly connected to the third side pressure plate connecting plate 613. The lower ends of block 68 and the third side pressure plate connecting plate 613 are slidably connected to the guide rail 65. The left and right sides of the third side pressure plate connecting plate 613 near the part are fixedly connected to the third side pressure plate 611 for folding the left and right sides of the lower end of the part. The guide rail 65 is fixedly installed on the upper end of the base 1. The two side walls of the second wedge block 68 are fixedly connected to the connecting fixing block 67. The connecting fixing block 67 is fixedly connected to one end of the second spring 66. The other end of the second spring 66 is fixedly connected to the fixing block 64. The fixing block 64 is fixedly installed on the upper end of the base 1. The fixing block 64 is located outside the connecting fixing block 67.

[0052] Two auxiliary support blocks 615 are located below the two sets of parts to be folded. The lower end of the auxiliary support block 615 is fixed on the horizontal plate 614. The horizontal plate 614 is fixedly connected to the output end of the second cylinder 62. The second cylinder 62 is fixedly connected to the mounting bracket 61. The mounting bracket 61 is fixedly connected to the bottom of the base 1. The auxiliary support block 615 moves through the base 1.

[0053] The punched parts are transferred to the second bending seat 612. The second cylinder 62 drives the horizontal plate 614 to move upward. The horizontal plate 614 drives two auxiliary support blocks 615 to move to support the two sets of parts to be folded. The vertical drive assembly 3 drives the first wedge block connecting plate 69 to move downward. The second side pressure plates 610 on the lower left and right sides of the first wedge block connecting plate 69 fold the upper left and right sides of the parts. At the same time, the first wedge block connecting plate 69 drives the first wedge block 63 to move downward. The inclined surface at the bottom of the first wedge block 63 contacts the inclined surface of the second wedge block 68. The first wedge block 63 pushes the second wedge block 68 to move inward along the guide rail 65. 68 drives the third side pressure plate connecting plate 613 to move inward, and the third side pressure plate 611 on the left and right sides of the third side pressure plate connecting plate 613 folds the lower left and right sides of the part, thereby completing the folding of the left and right sides of the part as a whole; it should be noted that after the part is folded, the vertical drive component 3 moves up to reset, driving the second side pressure plate 610 and the third side pressure plate 611 to reset, and the two auxiliary support blocks 615 also move down to reset under the action of the second cylinder 62, so as not to affect the movement of the part to the cutting component 4; the second bending component 6 of this application can ensure that when the upper left and right sides of the part are folded, the lower left and right sides of the part are folded simultaneously;

[0054] The cutting component 4 is located on one side of the second bending component 6 and is used to cut the two sets of parts.

[0055] The cutting assembly 4 includes a waste material guide trough 42, a tool mounting plate 43, finished product cutters 44, and defective product cutters 45. The upper end of the tool mounting plate 43 is fixedly connected to the driving end of the vertical drive assembly 3. Two finished product cutters 44 are fixedly installed on the front and rear sides of the lower end of the tool mounting plate 43. The distance between the two finished product cutters 44 is the same as the distance between the two sets of punching tools 22. The positions of the two finished product cutters 44 are vertically corresponding to the cutting position of the parts. A defective product cutter 45 is fixedly installed on the lower right side of the tool mounting plate 43. The waste material guide trough 42 and the two finished product guide troughs 41 are all fixedly installed on the base 1 in an inclined manner. One end of the waste material guide trough 42 is located below the defective product cutter 45, and one end of each of the two finished product guide troughs 41 is located below the two finished product cutters 44. The second bending seat 612 extends to the lower part of the tool mounting plate 43 to support the parts to be cut.

[0056] The vertical drive assembly 3 drives the tool mounting plate 43 to move downwards, and the tool mounting plate 43 drives two finished product cutters 44 to cut the two sets of parts. The cut parts are discharged through the finished product guide chute 41 below them. Figure 9 This is a schematic diagram of the structure of the processed parts. At the same time, the tool mounting plate 43 drives the defective cutter 45 to cut the waste on the right side of the two sets of parts, and the cut waste is discharged through the waste guide chute 42 below it; the cutting assembly 4 of this application can ensure that the waste is cut and discharged simultaneously when the parts are cut and discharged.

[0057] The vertical drive assembly 3 includes a connecting frame 31, a sliding plate 32, a first electric push rod 33, and a guide post 34. Several first electric push rods 33 are fixedly installed on the top plate, and the output end of the first electric push rod 33 is fixedly connected to the sliding plate 32 below the top plate. The four corners of the upper end of the base 1 are respectively fixedly connected to the guide post 34, and the upper end of the guide post 34 is respectively fixedly connected to the four corners of the lower end of the top plate. The guide post 34 passes through the four corners of the sliding plate 32 and is slidably connected to the sliding plate 32. The lower end of the sliding plate 32 is fixedly connected to the connecting frame 31, and the connecting frame 31 is fixedly connected to the punching tool 22, the tool mounting plate 43, the mounting top plate 56, and the first wedge block connecting plate 69.

[0058] By activating the first electric push rod 33, the first electric push rod 33 drives the slide plate 32 to move vertically up and down along the guide post 34. The guide post 34 drives the connecting frame 31 to move vertically up and down. The connecting frame 31 drives the punching tool 22, the tool mounting plate 43, the mounting top plate 56 and the first wedge block connecting plate 69 to move vertically up and down, simultaneously performing cutting, bending, folding and material cutting processes.

[0059] This application integrates punching, bending, and folding equipment, enabling simultaneous punching, bending, folding, and cutting processes at multiple stations on a single machine, thereby improving the processing efficiency of automotive sheet metal parts.

[0060] This application also allows for the production of two sets of parts at once, further improving the processing efficiency of automotive sheet metal components.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-station bending die for bending automotive sheet metal parts, comprising a base, characterized in that: The base is equipped with a punching assembly, a vertical drive assembly, a cutting assembly, a first bending assembly, and a second bending assembly; the drive end of the vertical drive assembly is connected to the punching assembly, the cutting assembly, the first bending assembly, and the second bending assembly respectively. The punching assembly includes a punching seat and two sets of punching cutters with a certain distance between them. The punching seat is fixedly connected to the upper end of the base. Both sets of punching cutters are fixedly connected to the drive end of the vertical drive assembly. The open ends of the two sets of punching cutters are arranged opposite each other. Several punching rods are fixedly connected to the middle of the punching cutters. The punching seat has a punching cutter movable groove that cooperates with the insertion of the punching cutter. The punching seat also has a punching rod movable groove that cooperates with the insertion of the punching rod. The first bending assembly is provided in two sets, and the two sets of first bending assemblies are located on one side of the two sets of punching tools, respectively, and are used to bend the two sets of parts. The second bending assembly is also provided in two sets. The two sets of second bending assemblies are located on one side of the two sets of first bending assemblies, and are used to bend the edges of the two sets of parts respectively. The cutting component is located on one side of the second bending component and is used to cut the two sets of parts. The second bending assembly includes a mounting bracket, a second cylinder, a first wedge block, a fixing block, a guide rail, a second spring, a connecting fixing block, a second wedge block, a first wedge block connecting plate, a second side pressure plate, a third side pressure plate, a second bending seat, a third side pressure plate connecting plate, a horizontal plate, and an auxiliary support block. The second bending seat is fixedly connected to the upper end of the base. The upper end of the first wedge block connecting plate is fixedly connected to the driving end of the vertical drive assembly. Second side pressure plates for bending the upper left and right sides of the part are fixedly connected to the lower left and right sides of the first wedge block connecting plate. A first wedge block is fixedly connected to the outer side of the first wedge block connecting plate. The lower end of the first wedge block contacts the inclined surface of one end of the second wedge block. The other end of the second wedge block is fixedly connected to the third side pressure plate connecting plate. The second wedge block and the third side pressure plate... The lower ends of the connecting plates are slidably connected to the guide rails. The left and right sides of the third side pressure plate connecting plate near the part are fixedly connected to third side pressure plates for folding the lower left and right sides of the part. The guide rails are fixedly installed on the upper end of the base. Connecting fixing blocks are fixedly connected to both sides of the second wedge block. The connecting fixing blocks are fixedly connected to one end of the second spring, and the other end of the second spring is fixedly connected to the fixing blocks. The fixing blocks are fixedly installed on the upper end of the base, and the fixing blocks are located outside the connecting fixing blocks. Two auxiliary support blocks are located below the two sets of parts to be folded. The lower ends of the auxiliary support blocks are fixed to the horizontal plate. The horizontal plate is fixedly connected to the output end of the second cylinder. The second cylinder is fixedly connected to the mounting bracket. The mounting bracket is fixedly connected to the bottom of the base. The auxiliary support blocks move through the base.

2. The multi-station bending die for bending automotive sheet metal parts according to claim 1, characterized in that, The base has discharge holes at positions corresponding to the movable slots of the punching tool and the punching rod, which facilitate the cutting and unloading of waste materials.

3. The multi-station bending die for bending automotive sheet metal parts according to claim 1, characterized in that, The first bending assembly includes a guide rod, a first bending seat, a first horizontal pressure plate, a first spring, a first side pressure plate, and a mounting top plate. The first bending seat is fixedly connected to the upper end of the base. The lower outer side of the mounting top plate is fixedly connected to the first side pressure plate. Guide rods are slidably connected to the four corners of the mounting top plate. The lower end of the guide rod is fixedly connected to the first horizontal pressure plate, which is located between the two first side pressure plates. A first spring is installed on the guide rod, which is located between the first horizontal pressure plate and the mounting top plate. The mounting top plate is fixedly connected to the driving end of the vertical drive assembly.

4. The multi-station bending die for bending automotive sheet metal parts according to claim 1, characterized in that, The cutting assembly includes a waste material guide chute, a tool mounting plate, a finished product cutter, and a defective product cutter. The upper end of the tool mounting plate is fixedly connected to the drive end of the vertical drive assembly. Two finished product cutters are fixedly mounted on the front and rear sides of the lower end of the tool mounting plate, and a defective product cutter is fixedly mounted on the right side of the lower end of the tool mounting plate. One end of the waste material guide chute is located below the defective product cutter, and one end of each of the two finished product guide chute is located below the two finished product cutters. The second bending seat extends to the lower part of the tool mounting plate.

5. A multi-station bending die for bending automotive sheet metal parts according to claim 4, characterized in that, The distance between the two finished product cutters is the same as the distance between the two sets of punching cutters, and the positions of the two finished product cutters are set vertically to correspond to the cutting positions of the parts.

6. A multi-station bending die for bending automotive sheet metal parts according to claim 5, characterized in that, The waste material guide chute and the two finished product guide chute are all fixedly installed on the base at an angle.

7. A multi-station bending die for bending automotive sheet metal parts according to claim 1, characterized in that, The vertical drive assembly includes a connecting frame, a sliding plate, a first electric push rod, and guide posts. Several first electric push rods are fixedly installed on the top plate, and the output ends of the first electric push rods are fixedly connected to the sliding plate below the top plate. Guide posts are fixedly connected to the four corners of the upper end of the base, and the upper ends of the guide posts are fixedly connected to the four corners of the lower end of the top plate. The guide posts pass through the four corners of the sliding plate and are slidably connected to the sliding plate. A connecting frame is fixedly connected to the lower end of the sliding plate, and the connecting frame is connected to the punching assembly, the cutting assembly, the first bending assembly, and the second bending assembly.

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