Bending die for new energy automobile chassis part machining

Abstract

The invention relates to the technical field of new energy automobile part machining, in particular to a bending die for new energy automobile chassis part machining, which comprises an upper die base and a lower die base, a stamping part is arranged on the bottom surface of the upper die base, a fixing frame is arranged on the lower die base, and insert assemblies are symmetrically arranged on two sides in a frame body of the fixing frame. A forming cavity is formed between the two insert assemblies, and rollers are arranged on the sides, located on the forming cavity, of the two insert assemblies. In the forming cavity, the rolling wheel and the stamping part jointly act on the round rod, the round rod is stamped and formed into the U-shaped part, through the arranged insert assembly, indentations on the outer surface and the bent position of the U-shaped part are reduced, the quality and strength of a product are improved, the service life of the product is prolonged, the safety coefficient of the product is increased, and through the arranged wedge pressing block, the forming precision of the U-shaped part is improved. And the U-shaped part can be conveniently taken out through the arrangement of the spring, damage caused when the U-shaped part is taken out is prevented, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy automobile parts processing, and in particular to a bending die for processing new energy automobile chassis parts. Background Art

[0002] As a part of new energy vehicle components, the front trailer hook can be used to connect a trailer to tow the trapped vehicle to a safe place or maintenance station when the vehicle breaks down or is unable to drive due to an accident.

[0003] The first process of forming the front trailer hook is to stamp a round rod into a U-shaped part through a first-order die. The existing U-shaped part bending die includes an upper die seat, which applies pressure to the pipe to form it into a U shape. A bending punch is arranged on the bottom surface of the upper die seat, and a U-shaped groove is provided on the outer wall of the bending punch to support or resist the inner arc surface of the U-shaped part; the lower die seat is used to receive the pressure of the punch and form the pipe. A U-shaped pressing groove is provided on the top of the lower die seat to support or resist the outer arc surface of the U-shaped part. The bending die moves downward through the upper die seat, driving the bending punch to move downward and abut against the to-be-bent part of the workpiece on the lower die seat, and then the punch continues to press downward, so that the to-be-bent part of the workpiece is along the U-shaped top of the lower die seat. shaped groove bending, thereby realizing the bending of the round rod workpiece; during the bending process, the punch presses the round rod downward, pressing the round rod into the U-shaped groove on the lower die seat, and the outer surface of the round rod and the U-shaped groove are squeezed and rubbed when they are subjected to force, and the outer surface of the round rod workpiece is prone to indentation under force; in the stamping and bending process, the U-shaped groove opened on the outer wall of the bending punch is pressed toward the round rod as a whole, and the round rod is prone to indentation under downward pressure at the place where it is bent into a U-shaped body, which not only affects the appearance quality of the product, but also reduces the strength of the bending place, thereby affecting the service life and safety factor of the product; moreover, the U-shaped part after stamping is not easy to be taken out of the U-shaped groove opened on the top of the lower die seat, and it is easy to rebound after being taken out, which seriously affects the product quality.

[0004] Therefore, the present invention provides a bending die for processing chassis parts of new energy vehicles to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0005] The purpose of the present invention is to provide a bending die for processing chassis parts of new energy vehicles, so as to solve the problem that the outer surface and the bending part of the U-shaped part formed by the existing U-shaped part bending die are prone to indentations, which affects the product quality and reduces the strength of the bending part; the U-shaped part after stamping is not easy to take out, and it is easy to rebound after taking out, which affects the production efficiency of the product.

[0006] In order to solve the above technical problems, the present invention provides a bending die for processing chassis parts of new energy vehicles, including an upper die base and a lower die base, a stamping part is arranged on the bottom surface of the upper die base, a fixed frame is arranged on the lower die base, and insert assemblies are symmetrically arranged on both sides of the fixed frame body, a molding cavity is arranged between the two groups of insert assemblies, and a roller is installed on the side of the insert assembly body close to the molding cavity; in the molding cavity, the roller and the stamping part act together on the round rod to stamp the round rod into a U-shaped part.

[0007] A further improvement of the technical solution of the present invention is that an upper clamping plate is arranged on the bottom surface of the upper die seat, a stamping piece vertically downward is arranged in the middle of the upper clamping plate, and oblique wedge pressure blocks are symmetrically arranged on both sides of the stamping piece, and the oblique wedge pressure blocks are used to fix the insert assembly.

[0008] A further improvement of the technical solution of the present invention is that a forming groove is provided on the arc-shaped bottom surface of the stamping part, and the forming groove is against the inner arc surface of the U-shaped part; two side surfaces of the stamping part body are located at both ends of the forming groove and are connected to provide a clearance groove, and the width and depth of the clearance groove are both greater than the forming groove.

[0009] A further improvement of the technical solution of the present invention is that a lower clamping plate is arranged on the top surface of the lower mold base, a fixed frame is arranged on the lower clamping plate, first limit blocks are arranged on the top surfaces of the left and right side frames of the fixed frame body respectively, and two groups of second limit blocks are arranged on the top surfaces of the front and rear side frames of the fixed frame body respectively.

[0010] A further improvement of the technical solution of the present invention is that: the insert assembly includes a lower insert, and steps are arranged downward on the front and rear sides of the lower insert body, and the steps abut against the second limit block to limit the left and right sides of the lower insert; a chamfered surface is arranged on the side of the lower insert body close to the first limit block, and the first limit block and the chamfered surface are respectively adapted to abut against the two side surfaces of the inclined wedge pressure block, and the inclined wedge pressure block is used to push the lower insert to move in the direction of the molding cavity and fix it after movement.

[0011] A further improvement of the technical solution of the present invention is that a U-shaped fixing block is arranged on the top surface of the lower insert, two ends of the round rod are inserted into the U-shaped fixing block, at least two protrusions are arranged at intervals on one side of the lower insert close to the molding cavity, a mounting block is arranged on the top surface of the protrusion, a roller is arranged between the two protrusions, and the roller shafts at both ends of the roller are rotatably installed in the side wall of the mounting block, so that the roller is in a suspended state at the bottom, and the upper surface of the roller is adapted to abut against the bottom surface of the round rod.

[0012] A further improvement of the technical solution of the present invention is that a bottom forming plate is arranged in the middle of the top surface of the lower clamping plate, and both ends of the bottom forming plate are clamped on the front and rear side frames of the fixed frame body, the bottom forming plate is the bottom surface of the forming cavity, and a bottom forming groove is arranged on the upper surface of the bottom forming plate, and the bottom forming groove is abutted against the bottom surface of the U-shaped part.

[0013] A further improvement of the technical solution of the present invention is that a lower mounting plate is arranged on the top surface of the lower clamping plate, and the lower mounting plate abuts against the bottom surface of the lower insert.

[0014] A further improvement of the technical solution of the present invention is that: springs are arranged on the outer walls of the left and right frames of the fixed frame body, a matching column is adapted inside the spring, a blocking plate is arranged at one end of the column, and the other end of the column horizontally penetrates the fixed frame body and is fixed in the lower insert.

[0015] A further improvement of the technical solution of the present invention is that the upper ends of the spring columns are fixed at the four corners of the bottom surface of the upper die seat respectively, the lower ends of the spring columns are fixed at the four corners of the top surface of the lower die seat, and limiting columns are arranged between the spring columns.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects: 1. The present invention provides a bending die for processing chassis parts of new energy vehicles. When the upper die seat of the bending die drives the stamping part to move downward to the molding cavity and presses against the round rod, the round rod drives the roller to rotate, and the round rod and the roller move at the same time. There is no relative displacement between the round rod and the roller, which reduces the friction between the insert assembly and the round rod, thereby reducing the indentation on the outer surface of the U-shaped part and the bending part, improving the product quality and the strength of the bending part, thereby improving the product life cycle and safety factor.

[0017] 2. The present invention provides a bending die for processing chassis parts of new energy vehicles. The spring is in a free telescopic state before stamping. When the upper die seat drives the inclined wedge pressure block to move downward, the inclined wedge pressure block pushes the lower insert to move toward the inside of the molding cavity, and the spring fixed to the lower insert is compressed. When the stamping is completed, the inclined wedge pressure block moves upward, and the spring changes from a compressed state during stamping to a free state. The spring pulls the lower insert to move in the opposite direction. The spring pulls the lower insert in the fixed frame so that the lower insert is against the side wall of the fixed frame, and the lower insert is away from the U-shaped piece in the molding cavity, which facilitates the removal of the U-shaped piece from the two lower inserts, thereby preventing scratches and deformation caused by the removal of the U-shaped piece from the mold, which affects product quality and production efficiency.

[0018] 3. The present invention provides a bending die for processing chassis parts of new energy vehicles. The arc-shaped bottom surface of the stamping part of the bending die is provided with a forming groove, and the forming groove is abutted against the inner arc surface of the U-shaped part; the two side surfaces of the stamping part body are located at both ends of the forming groove and connected to form a clearance groove, and the width and depth of the clearance groove are both greater than the forming groove, which is used to adjust the rebound space of the U-shaped part and adjust the stroke of the upper die seat, thereby controlling the opening size of the U-shaped part and ensuring the accuracy of stamping.

[0019] 4. The present invention provides a bending die for processing chassis parts of new energy vehicles. The downward position of the inclined wedge pressure block in the bending die can be adjusted to adjust the distance between the lower inserts, and then adjust the gap between the roller and the U-shaped part, so as to prevent the U-shaped part from rebounding due to the excessive gap between the roller and the U-shaped part during the forming process, resulting in deviation in the size of the U-shaped part, thereby improving the dimensional accuracy of the U-shaped part forming.

[0020] 5. The present invention provides a bending die for processing chassis parts of new energy vehicles. In the bending die, both ends of the middle part of the round rod slide on the roller, and the roller and the stamping part move at the same time. There is no relative displacement between the round rod and the roller, thereby reducing the friction between the roller and the round rod; thereby reducing the indentation on the outer surface of the stamping part, improving the quality and strength of the product, and improving the product life cycle and safety factor; the upper die seat drives the stamping part to move downward, and stamps the round rod into a U-shaped part. The bottom surface of the U-shaped part abuts against the bottom molding groove, and the vertical part of the U-shaped part abuts against the side of the roller. Since the roller is in a suspended state, the bent part of the U-shaped part does not contact any component in the molding cavity and is formed by free bending. It is not easy to produce indentations at the bending part, thereby improving the product quality and the strength of the bending part, thereby improving the product life cycle and safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of a bending die for processing chassis parts of new energy vehicles; Figure 2 It is a schematic diagram of the structure of the insert assembly and the round bar before stamping; Figure 3 It is a schematic diagram of the structure of the insert assembly, the stamping part and the wedge pressing block during stamping; Figure 4 It is a top view of the fixed frame, insert assembly and bottom molding plate; Figure 5 It is a schematic diagram of the structure of the upper die base, the wedge pressing block and the stamping part; Figure 6 It is a schematic diagram of the structure of the insert assembly; Figure 7 It is a schematic diagram of the structure of the insert assembly and the round rod; Figure 8 It is a schematic diagram of the structure of the insert assembly and the U-shaped member; Fig. 9 It is a schematic diagram of the structure of the stamping part, the bottom forming plate and the U-shaped part; Fig.10 It is a schematic diagram of the structure of the stamping part, the first limit block and the second limit block during stamping; Fig.11 It is a schematic diagram of the structure of the spring, the fixed frame and the lower insert; Fig.12 It is a schematic diagram of the structure of the spring, the cylinder and the blocking disk; : 1. upper die base; 2. lower die base; 3. round rod; 4. U-shaped part; 5. spring; 6. column; 7. spring column; 8. limit column; 9. molding cavity; 11. stamping part; 12. upper clamp; 13. inclined wedge pressure block; 21. fixed frame; 22. insert assembly; 23. roller; 24. lower clamp; 25. first limit block; 26. second limit block; 27. bottom molding plate; 28. bottom molding groove; 29. ​​lower mounting plate; 111. molding groove; 112. clearance groove; 221. lower insert; 222. U-shaped fixing block; 223. step platform; 224. protrusion; 225. mounting block; 226. chamfered surface; 61. blocking disk. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The present invention is further explained below in conjunction with specific implementation modes.

[0027] like Figure 1 to Figure 12As shown, the present embodiment provides a bending die for processing chassis parts of new energy vehicles, comprising an upper die seat 1 and a lower die seat 2, a stamping part 11 is arranged on the bottom surface of the upper die seat 1, a fixed frame 21 is arranged on the lower die seat 2, insert assemblies 22 are symmetrically arranged on both sides of the fixed frame 21, a molding cavity 9 is arranged between the two groups of insert assemblies 22, and a roller 23 is installed on the side of the insert assembly 22 body close to the molding cavity 9. In the molding cavity 9, the roller 23 and the stamping part 11 act together on the round rod 3 to stamp the round rod 3 into a U-shaped part 4. When the stamping part in the upper die seat of the bending die moves downward to the molding cavity to press against the round rod, the round rod drives the roller to rotate, and the round rod and the roller move at the same time. There is no relative displacement between the round rod and the roller, which reduces the friction between the insert assembly and the round rod, thereby reducing the indentation on the outer surface of the U-shaped part and the bending part, improving the product quality and the strength of the bending part, thereby improving the product life cycle and safety factor.

[0028] like Figure 1 , Figure 3 , Figure 5 , Fig. 9 As shown, in this embodiment, an upper clamping plate 12 is arranged on the bottom surface of the upper die base 1, a stamping part 11 is arranged vertically downward in the middle of the upper clamping plate 12, and oblique wedge pressure blocks 13 are symmetrically arranged on both sides of the stamping part 11, and the oblique wedge pressure blocks 13 are used to fix the insert assembly 22. A forming groove 111 is provided on the arc-shaped bottom surface of the stamping part 11, and the forming groove 111 is pressed against the inner arc surface of the U-shaped part 4; the stamping part 11 moves downward to apply pressure to the round rod 3, causing the round rod 3 to undergo plastic deformation, and the forming groove 111 forms the round rod 3 into a U-shaped part 4 pressed against the inner arc surface of the U-shaped part 4, and the two side surfaces of the stamping part 11 body are located at both ends of the forming groove 111 and connected to form a clearance groove 112, and the width and depth of the clearance groove 112 are both greater than the forming groove 111; after the round rod 3 is formed, the two vertical parts of the U-shaped part are located in the forming groove 111, and the width and depth of the clearance groove 112 are both greater than the forming groove 111, which is used to adjust the rebound space of the U-shaped part, adjust the stroke of the upper die seat 1, and then control the opening size of the U-shaped part to ensure the accuracy of stamping.

[0029] like Figure 3 , Figure 4 , Fig.10As shown, in this embodiment, a lower clamping plate 24 is provided on the top surface of the lower mold base 2, a fixed frame 21 is provided on the lower clamping plate 24, first limit blocks 25 are provided on the top surfaces of the left and right side frames of the fixed frame 21 body respectively, and two groups of second limit blocks 26 are provided on the top surfaces of the front and rear side frames of the fixed frame 21 body respectively. The insert assembly 22 includes a lower insert 221, and a step platform 223 is arranged downward on the front and rear sides of the lower insert 221 body, and the step platform 223 abuts against the second limit block 26. The step platform 223 respectively abuts against the bottom and side surfaces of the second limit block 26, and is used to limit the left and right sides of the lower insert 221; a lower mounting plate 29 is arranged on the top surface of the lower clamping plate 24, and the upper surface of the lower mounting plate 29 abuts against the bottom surface of the lower insert 221; a chamfered surface 226 is arranged on the side of the lower insert 221 body close to the first limit block 25, and the first limit block 25 and the chamfered surface 226 are respectively adapted to abut against the two side surfaces of the inclined wedge pressure block 13, and the inclined wedge pressure block 13 is used to push the lower insert 221 to move toward the molding cavity 9 and fix it after movement. The inclined wedge pressure block 13 moves downward until one side abuts against the first limit block 25, and the other side abuts against the beveled surface 226, pushing the lower insert 221 on the lower mounting plate 29 to move toward the molding cavity 9, so that the roller 23 and the stamping part 11 stamp the round rod 3 into a U-shaped part 4, and the bottom and side surfaces of the second limit block 26 respectively abut against the side surfaces of the bottom surface of the step platform 223 to limit the lower insert 221 and prevent the lower insert 221 from moving up and down to ensure the stamping accuracy. The downward position of the inclined wedge pressure block 13 can adjust the distance between the lower inserts 221, and then adjust the gap between the roller 23 and the U-shaped part 4 to prevent the gap between the roller 23 and the U-shaped part 4 from being too large during the molding process, causing the U-shaped part 4 to rebound, resulting in deviations in the size of the U-shaped part 4 and affecting the dimensional accuracy of the product.

[0030] like Figure 2~Figure 4 , Figure 11~Figure 12 As shown, in this embodiment, springs 5 ​​are arranged on the outer walls of the left and right frames of the fixed frame 21, and a matching column 6 is adapted inside the spring 5. A blocking plate 61 is arranged at one end of the column 6, and the other end of the column 6 horizontally penetrates the fixed frame 21 body and is fixed in the lower insert 221; the spring 5 is in a free telescopic state before stamping. When the upper die seat 1 drives the inclined wedge pressure block 13 to move downward, the inclined wedge pressure block 13 pushes the lower insert 221 to move in the direction of the molding cavity 9, and the spring 5 fixed to the lower insert 221 is compressed. After the stamping is completed, the wedge pressure block 13 moves upward, and the spring 5 changes from the compressed state during stamping to the free state. The spring 5 pulls the lower insert 221 to move in the opposite direction. The spring 5 pulls the lower insert 221 in the frame of the fixed frame 21 so that the lower insert 221 is against the side wall of the fixed frame 21. The lower insert 221 is away from the U-shaped part 4 in the molding cavity 9, which facilitates the removal of the U-shaped part 4 from the two lower inserts 221, preventing scratches and deformation caused by the removal of the U-shaped part from the mold, which affects the product quality and production efficiency.

[0031] like Figure 6~Figure 8As shown, in this embodiment, a U-shaped fixing block 222 is arranged on the top surface of the lower insert 221, and the two ends of the round rod 3 are set in the U-shaped fixing block 222. At least two protrusions 224 are arranged at intervals on the side of the lower insert 221 close to the molding cavity 9. A mounting block 225 is arranged on the top surface of the protrusion 224. A roller 23 is arranged between the two protrusions 224. The rollers at both ends of the roller 23 are rotatably installed in the side wall of the mounting block 225, so that the roller 23 is in a suspended state, and the upper surface of the roller 23 is adapted to abut against the bottom surface of the round rod 3. A bottom molding plate 27 is arranged in the middle of the top surface of the lower clamping plate 24. The two ends of the bottom molding plate 27 are clamped to the front and rear side frames of the fixing frame 21 body. The bottom molding plate 27 is the bottom surface of the molding cavity 9. The upper surface of the bottom molding plate 27 is provided with a bottom molding groove 28, and the bottom molding groove 28 abuts against the bottom surface of the U-shaped member 4. The upper die seat 1 drives the stamping part 11 to move downward, stamping the round rod 3 into a U-shaped part 4, and the forming groove 111 of the stamping part 11 presses the middle part of the round rod 3 downward, and the two ends of the middle part of the round rod 3 slide on the roller 23, and the roller 23 and the stamping part 11 move at the same time. There is no relative displacement between the round rod 3 and the roller 23, reducing the friction between the roller 23 and the round rod 3; thereby reducing the indentation on the outer surface of the U-shaped part 4, improving the quality and strength of the product, and thereby improving the product life cycle and Safety factor: the upper die seat 1 drives the stamping part 11 to move downward, and stamps the round rod 3 into a U-shaped part 4. The bottom surface of the U-shaped part 4 is against the bottom molding groove 28, and the vertical part of the U-shaped part 4 is against the side of the roller 23. Since the roller 23 is in a suspended state, the bent part of the U-shaped part 4 does not contact any parts in the molding cavity and is formed by free bending. It is not easy to produce indentations at the bending part, which improves the product quality and the strength of the bending part, thereby improving the product life cycle and safety factor.

[0032] like Figure 1 As shown, in this embodiment, the upper ends of spring columns 7 are fixed at the four corners of the bottom surface of the upper die base 1 respectively, and the function of the spring columns 7 is to guide when the upper die base 1 moves downward to close the mold with the lower die base 2; the lower ends of the spring columns 7 are fixed at the four corners of the top surface of the lower die base 2, and limit columns 8 are arranged between the spring columns 7. The limit columns 8 are used to control the closing height between the upper die base 1 and the lower die base 2, and then control the bending size of the U-shaped part 4.

[0033] The present embodiment provides a working principle of a bending mold for processing chassis parts of new energy vehicles: the user operates the mold, the upper mold base 1 moves downward, driving the stamping piece 11 and the inclined wedge pressure block 13 fixed at the bottom of the upper clamping plate 12 to move downward, the stamping piece 11 presses against the round rod 3, the round rod 3 abuts against the forming groove 111, the round rod 3 drives the roller 23 to roll, the round rod 3 and the roller 3 move at the same time, there is no relative displacement between the round rod 3 and the roller 23, the friction between the insert assembly 22 and the round rod 3 is reduced, and then the indentation on the outer surface of the U-shaped part and the bending part is reduced, the quality and strength of the product are improved, and the service life and safety of the product are increased; after the stamping piece 11 drives the round rod 3 to move downward for a certain distance, the inclined wedge pressure block 13 moves to abut against the lower insert 221, pushing the lower insert 221 to move into the forming cavity 9, and then driving the roller 23 to approach the round rod 3, reducing the gap between the roller 23 and the round rod 3, facilitating the stamping and forming of the round rod 3, preventing the rebound of the round rod 3 after stamping and forming, and improving The dimensional accuracy of the round rod 3 is improved; the stamping part 11 continues to move downward to form the round rod 3 into a U-shaped part 4. At this time, the bottom surface of the U-shaped part 4 is pressed against the bottom forming groove 28, and the vertical part of the U-shaped part 4 is pressed against the side of the roller 23. Since the roller 23 is in a suspended state, the bent part of the U-shaped part 4 does not contact any parts in the forming cavity, thereby improving the product quality and the strength of the bending part, thereby improving the product life cycle and safety factor; the spring 5 fixed to the lower insert 221 is compressed; The die base 1 drives the stamping part 11 and the wedge pressure block 13 to move upward, and the spring 5 changes from the compressed state during stamping to the free state. The spring 5 pulls the lower insert 221 to move in the opposite direction. The spring 5 pulls the lower insert 221 in the frame of the fixed frame 21 so that the lower insert 221 is against the side wall of the fixed frame 21. The lower insert 221 is away from the U-shaped part 4 in the forming cavity 9, and the roller 23 is away from the U-shaped part 4. The U-shaped part 4 is taken out, and then the lower group of round bars is put in, and the above actions are repeated to perform the bending and forming work.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bending die for processing chassis parts of new energy vehicles, characterized in that: The invention comprises an upper die base (1) and a lower die base (2), wherein a stamping part (11) is arranged on the bottom surface of the upper die base (1), a fixing frame (21) is arranged on the lower die base (2), insert assemblies (22) are symmetrically arranged on both sides of the fixing frame (21), a forming cavity (9) is arranged between the two groups of insert assemblies (22), and a roller (23) is installed on a side of the insert assembly (22) body close to the forming cavity (9); in the forming cavity (9), the roller (23) and the stamping part (11) act together on the round rod (3) to stamp the round rod (3) into a U-shaped part (4).

2. A bending die for processing chassis parts of new energy vehicles according to claim 1, characterized in that: An upper clamping plate (12) is arranged on the bottom surface of the upper die seat (1), a punching piece (11) is arranged vertically downward in the middle of the upper clamping plate (12), and oblique wedge pressing blocks (13) are symmetrically arranged on both sides of the punching piece (11), and the oblique wedge pressing blocks (13) are used to fix the insert assembly (22).

3. A bending die for processing chassis parts of new energy vehicles according to claim 2, characterized in that: The arc-shaped bottom surface of the stamping part (11) is provided with a forming groove (111), and the forming groove (111) is in contact with the inner arc surface of the U-shaped part (4); two side surfaces of the stamping part (11) body are located at both ends of the forming groove (111) and are connected to form a clearance groove (112), and the width and depth of the clearance groove (112) are greater than the forming groove (111).

4. A bending die for processing chassis parts of new energy vehicles according to claim 1, characterized in that: A lower clamping plate (24) is arranged on the top surface of the lower die base (2), a fixed frame (21) is arranged on the lower clamping plate (24), first limit blocks (25) are arranged on the top surfaces of the left and right side frames of the fixed frame (21) body, and two sets of second limit blocks (26) are arranged on the top surfaces of the front and rear side frames of the fixed frame (21) body.

5. A bending die for processing chassis parts of new energy vehicles according to claim 4, characterized in that: The insert assembly (22) comprises a lower insert (221), and a stepped platform (223) is arranged downwardly on the front and rear sides of the lower insert (221) body, and the stepped platform (223) abuts against the second limit block (26) for limiting the left and right sides of the lower insert (221); a chamfered surface (226) is arranged on the side of the lower insert (221) body close to the first limit block (25), and the first limit block (25) and the chamfered surface (226) are respectively adapted to abut against two side surfaces of the inclined wedge pressure block (13), and the inclined wedge pressure block (13) is used to push the lower insert (221) to move in the direction of the molding cavity (9) and to fix it after the movement.

6. A bending die for processing chassis parts of new energy vehicles according to claim 5, characterized in that: A U-shaped fixing block (222) is arranged on the top surface of the lower insert block (221), and two ends of the round rod (3) are sleeved in the U-shaped fixing block (222). At least two protrusions (224) are arranged at intervals on a side of the lower insert block (221) close to the molding cavity (9). A mounting block (225) is arranged on the top surface of the protrusion (224), and a roller (23) is arranged between the two protrusions (224). The roller shafts at both ends of the roller (23) are rotatably mounted in the side wall of the mounting block (225), so that the roller (23) is in a suspended state at the bottom, and the upper surface of the roller (23) is adapted to abut against the bottom surface of the round rod (3).

7. A bending die for processing chassis parts of new energy vehicles according to claim 4, characterized in that: A bottom forming plate (27) is provided in the middle of the top surface of the lower clamping plate (24), and two ends of the bottom forming plate (27) are clamped to the front and rear side frames of the fixing frame (21) body. The bottom forming plate (27) is the bottom surface of the forming cavity (9), and a bottom forming groove (28) is provided on the upper surface of the bottom forming plate (27), and the bottom forming groove (28) is in contact with the bottom surface of the U-shaped member (4).

8. According to the bending die for processing chassis parts of new energy vehicles as claimed in claim 7, a lower mounting plate (29) is arranged on the top surface of the lower clamping plate (24), and the upper surface of the lower mounting plate (29) abuts against the bottom surface of the lower insert (221).

9. A bending die for processing chassis parts of new energy vehicles according to claim 4, characterized in that: Springs (5) are arranged on the outer walls of the left and right frames of the fixed frame (21) body. A matching column (6) is adapted inside the spring (5). A blocking plate (61) is arranged at one end of the column (6). The other end of the column (6) horizontally penetrates the fixed frame (21) body and is fixed in the lower insert (221).

10. The bending die for processing chassis parts of new energy vehicles according to claim 1, characterized in that: The upper ends of the spring columns (7) are respectively fixed at the four corners of the bottom surface of the upper die seat (1), the lower ends of the spring columns (7) are fixed at the four corners of the top surface of the lower die seat (2), and limiting columns (8) are arranged between the spring columns (7).

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