A folding die for rear panel of passenger car
By designing a folding mold including a base, a folding end fixing frame, a guide roller and a cylinder piston rod, the problems of uneven force application and skewed plates caused by manual propulsion are solved, and a higher quality folding processing is achieved.
Patent Information
- Application Number
- CN202323613146.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2033-12-27
AI Technical Summary
In the prior art, the folding process of the rear enclosure of the passenger bus relies on manual propulsion, resulting in uneven force application, which can easily cause skew in the plate model and increase the generation of defective products.
A folding mold including a base, a folding end fixing frame, a guide roller and a cylinder piston rod is designed. Through the action of the cylinder piston rod, stable positioning and uniform folding of the plate are achieved.
Through the design of this mold, it is possible to effectively avoid the skew of the plate during the folding process, improve the processing quality, and reduce the generation of defective products.
Smart Images
Figure CN222725256U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle engineering, in particular to a folding die for a rear wall of a passenger car. Background Art
[0002] The rear surround of a car is the surround of the car's rear wing. The so-called surround can be divided into front and rear large surrounds and small surrounds, side skirts, rear wings, etc. The large surround is the overall bumper assembly.
[0003] The car bumper is a safety device that absorbs and mitigates external impact and protects the front and rear parts of the car body. It is a device that provides buffering when the car or the driver is subjected to collision.
[0004] The plastic bumper is composed of three parts: outer panel, buffer material and cross beam. The outer panel and buffer material are made of plastic, and the cross beam is stamped with a U-shaped groove from a cold-rolled thin plate with a thickness of about 1.5 mm. The outer panel and buffer material are attached to the cross beam, and the cross beam is connected to the frame longitudinal beam with screws and can be removed at any time. The plastics used in this plastic bumper are generally polyester and polypropylene.
[0005] Plastic bumpers have strength, rigidity and decorativeness. From a safety perspective, they can act as a buffer when a car collides and protect the front and rear bodies. From an appearance perspective, they can be naturally integrated with the car body, forming a seamless whole. They have good decorative properties and have become an important component for decorating the car's appearance.
[0006] The rear panel of a bus is mostly made by injection molding. First, the plastic raw material is injected into a panel mold to form an integral panel structure. Then, the panel is folded according to the curvature of the bus to make it have a curvature that fits the rear frame of the bus. Then, a slotting machine is used to open the corresponding installation slot structure on the folded rear panel model.
[0007] At present, conventional folding dies only have one positioning point and one bending point, and the overall advancement still relies on manual pushing. The disadvantage of manual pushing is that the force is uneven, and the plate model is easily skewed during the pushing process, thereby increasing the generation of defective products. Utility Model Content
[0008] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to change the problem of unstable processing caused by manual labor when folding the base model of the rear panel.
[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0010] A folding mold for the rear wall of a passenger car is designed, including a base arranged on the ground, a folding end fixing frame is assembled on one side of the upper end surface of the base through a bracket, the transverse cross-section of the folding end fixing frame is a U-shaped structure and an extrusion plate is arranged inside, the upper end surface of the folding end fixing frame is arranged with a first cylinder penetrating therein, the first cylinder and the upper end surface of the folding end fixing frame are assembled at a connection position by screws, the first cylinder is internally slidably sleeved with a first piston rod penetrating therein, the first cylinder is symmetrically distributed at the front two ends and the lower ends of the two first piston rods are fixed to the extrusion plate by screws, the upper end surface of the base is also fixedly assembled with a second cylinder symmetrically distributed front and back, the second cylinder is internally slidably sleeved with a second piston rod penetrating therein, the upper ends of the two second piston rods are each provided with a connecting block in a one-to-one correspondence, and the same guide roller for folding is fixedly assembled between the front and rear connecting blocks.
[0011] In detail, the upper end surface of the base is also fixed with four third cylinders distributed at four points by screws, the third cylinders are symmetrically arranged in pairs, and the inner part of the third cylinder is slidably sleeved with a third piston rod penetrating therethrough.
[0012] In detail, the third piston rod is distributed in a rectangle with four points, and the four ends are fixed with the same top plate. The upper end surface of the top plate is symmetrically provided with a limit plate with respect to the transverse central axis of the base, and the two limit plates are in sliding contact with the upper end surface of the top plate.
[0013] In detail, the lower end surface of the top plate is fixed with a fourth cylinder body symmetrically distributed along the transverse central axis of the base through a bracket, and the fourth cylinder body is internally slidably sleeved with a fourth piston rod penetrating therethrough.
[0014] In detail, a connecting plate is fixedly installed on the outwardly extending end of the fourth piston rod, a right-angle bracket is fixedly assembled on the outward side of the connecting plate, and the other end of the right-angle bracket is fixedly connected to the surface of the limit plate by screws.
[0015] In detail, a rod groove is provided inside the connecting block, and the rod groove is slidably inserted into and docked with the second piston rod. The inner wall of the connecting block is also provided with a fork groove connected to the rod groove. A fork block is slidably sleeved in the fork groove and passes through the interior thereof. A shift pin extending outward and passing through the connecting block is fixed on the outer wall of the fork block.
[0016] In detail, a spring is provided on the inner wall of the fork groove, and the two ends of the spring are respectively welded and fixed to the surface of the shift pin and the inner wall of the fork groove, and a slot is provided on the surface of the second piston rod for sliding insertion and docking with the fork block.
[0017] The design scheme proposed by the utility model has the following beneficial effects during application:
[0018] 1. Through the coordination of the folding end fixing frame, the guide roller and the top plate, the rear enclosure base plate used for folding can be placed on the same horizontal plane to coordinate with the folding. The first piston rod of the first cylinder is extended so that the extrusion plate can move downward to coordinate with the lower end of the folding end fixing frame to fix the end edge of the base plate, thereby ensuring that the end will not move at will when being bent by the guide roller.
[0019] 2. By extending the third piston rod of the third cylinder, the top plate can move upward with the base plate, so that the base plate can bend its edges along with the guide rollers. The two limit plates that can move oppositely distributed on the top plate can position the horizontal front and rear directions of the base plate during folding, avoiding random displacement and improving the folding processing quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 It is a schematic diagram of the overall oblique top view of the utility model;
[0022] Figure 3 It is the right view of the overall structure of the utility model;
[0023] Figure 4 It is a schematic diagram of the internal connection between the connecting block and the first piston rod of the utility model;
[0024] Figure 5 It is an enlarged schematic diagram of point a of the present utility model.
[0025] In the figure: 10, base; 11, folding end fixing frame; 12, extrusion plate; 13, first cylinder; 14, first piston rod; 15, second cylinder; 16, second piston rod; 17, connecting block; 18, guide roller; 20, third cylinder; 21, third piston rod; 22, top plate; 23, limit plate; 30, fourth cylinder body; 31, fourth piston rod; 32, connecting plate; 33, right-angle frame; 40, rod groove; 41, fork groove; 42, fork block; 43, shift pin; 44, spring; 45, slot. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0027] Reference Figure 1-Figure 5A hemming mold for a rear wall of a passenger car comprises a base 10 arranged on the ground, a hemming end fixing frame 11 is assembled on one side of the upper end surface of the base 10 through a bracket, the transverse cross-section of the hemming end fixing frame 11 is a U-shaped structure and an extrusion plate 12 is arranged inside, a first cylinder 13 is arranged on the upper end surface of the hemming end fixing frame 11 to penetrate therein, the first cylinder 13 is assembled with the upper end surface of the hemming end fixing frame 11 by screws, a first piston rod 14 is slidably sleeved inside the first cylinder 13 and penetrates therethrough, the first cylinder 13 is symmetrically distributed at the front and rear ends and the lower ends of the two first piston rods 14 are fixed to the extrusion plate 12 by screws, a second cylinder 15 symmetrically distributed front and back is also fixedly assembled on the upper end surface of the base 10, a second piston rod 16 slidably sleeved inside the second cylinder 15 and penetrates therethrough, the upper ends of the two second piston rods 16 are each provided with a connecting block 17 correspondingly, and a guide roller 18 for hemming is fixedly assembled between the front and rear connecting blocks 17.
[0028] It should be further explained that the upper end surface of the base 10 is also fixed with four-point distributed third cylinders 20 by screws. The third cylinders 20 are symmetrically arranged in pairs. The internal sliding sleeve of the third cylinder 20 is connected with a third piston rod 21 that penetrates it. Through the upward movement of the top plate 22, it can carry the plate to bend along the guide roller 18.
[0029] It should be further explained that the third piston rod 21 is distributed in a rectangle with four points, and the same top plate 22 is fixed to the four ends thereof. A limit plate 23 is provided on the upper end surface of the top plate 22 symmetrically with the transverse central axis plane of the base 10. The two limit plates 23 are in sliding contact with the upper end surface of the top plate 22. The two limit plates 23 move in opposite directions, which can ensure the positioning of the front and rear sides of the plate when it is bent.
[0030] It should be further explained that the lower end surface of the top plate 22 is fixed with a fourth cylinder 30 symmetrically distributed along the transverse central axis of the base 10 through a bracket, and the fourth cylinder 30 has a fourth piston rod 31 penetrating therethrough and slidably sleeved therein.
[0031] It should be further explained that a connecting plate 32 is fixedly installed on the outwardly extending end of the fourth piston rod 31, and a right-angle bracket 33 is fixedly assembled on the outward side of the connecting plate 32. The other end of the right-angle bracket 33 is fixedly connected to the surface of the limit plate 23 by screws, which can ensure the stability of the movement of the limit plate 23 on the upper end surface of the top plate 22.
[0032] It should be further explained that a rod groove 40 is provided inside the connecting block 17, and the rod groove 40 is slidably inserted into and docked with the second piston rod 16. The inner wall of the connecting block 17 is also provided with a fork groove 41 connected to the rod groove 40. A fork block 42 is slidably sleeved in the fork groove 41 and passes through the interior thereof. A shift pin 43 extending outward and passing through the connecting block 17 is fixed on the outer wall of the fork block 42. The spring 44 is in a balanced state, and the spring 44 can ensure the stable extension and resetting of the shift pin 43.
[0033] It should be further explained that a spring 44 is provided on the inner wall of the fork groove 41, and the two ends of the spring 44 are respectively welded and fixed to the surface of the shift pin 43 and the inner wall of the fork groove 41, and a slot 45 is provided on the surface of the second piston rod 16 for sliding insertion and docking with the fork block 42, which can facilitate the assembly and disassembly of the connecting block 17 and the second piston rod 16, and can facilitate the replacement of the guide roller 18 to adapt it to the bending requirements of different folding edges.
[0034] Working method: When the rear panel needs to be folded, the panel is placed horizontally on the top plate 22, and then Figure 1 The left side shown is pushed forward, through the lowering of the guide roller 18, and then sent into the folding end fixing frame 11, and is set against its inner wall. Then, the first piston rod 14 of the first cylinder 13 is extended to make the extrusion plate 12 move downward, and cooperate with the inner lower end of the folding end fixing frame 11 to realize the extrusion positioning of the end of the plate.
[0035] Then, the second piston rod 16 of the second cylinder 15 moves downward, so that the guide roller 18 can be attached to the upper surface of the plate, and then the fourth piston rod 31 of the fourth cylinder 30 is extended and retracted, so that the two limit plates 23 can move in opposite directions and the plate is adjusted. Figure 1 The front and rear sides are positioned as shown, and finally, the third piston rod 21 of the third cylinder 20 is extended to move the top plate 22 upward, which can drive the plate to bend with the guide roller 18 to form a folding process.
[0036] When the guide roller 18 needs to be replaced, the pin 43 is moved to compress the spring 44 into the fork groove 41 , thereby separating the fork block 42 from the slot 45 , allowing the second piston rod 16 to separate from the connecting block 17 , and completing the removal of the guide roller 18 .
[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A folding die for a rear panel of a passenger car, comprising a base (10) arranged on the ground, characterized in that: A folded end fixing frame (11) is mounted on one side of the upper end surface of the base (10) through a bracket. The folded end fixing frame (11) has a U-shaped transverse cross-section and is provided with an extrusion plate (12) therein. A first cylinder (13) is provided on the upper end surface of the folded end fixing frame (11) that penetrates therein. The first cylinder (13) is assembled with screws at the connection position with the upper end surface of the folded end fixing frame (11). The first cylinder (13) is slidably sleeved with a first piston rod (14) that penetrates therein. A cylinder (13) is symmetrically distributed at the front two ends and the lower ends of the two first piston rods (14) are fixed to the extrusion plate (12) by screws. The upper end surface of the base (10) is also fixedly equipped with a second cylinder (15) symmetrically distributed front and back. The second cylinder (15) is internally slidably sleeved with a second piston rod (16) that is arranged through it. The upper ends of the two second piston rods (16) are respectively provided with connecting blocks (17). The same guide roller (18) for folding is fixedly equipped between the front and rear connecting blocks (17).
2. The hem folding mold for the rear panel of a passenger car according to claim 1, characterized in that: The upper end surface of the base (10) is also fixed with three third cylinders (20) distributed at four points by screws. The three third cylinders (20) are symmetrically arranged in pairs, and the third cylinders (20) are internally slidably sleeved with third piston rods (21) penetrating therethrough.
3. The hem folding mold for the rear wall of a passenger car according to claim 2, characterized in that: The third piston rod (21) is distributed in a rectangular shape with four points, and the four ends thereof are all fixed with the same top plate (22). The upper end surface of the top plate (22) is provided with a limit plate (23) symmetrically with respect to the transverse central axis plane of the base (10), and the two limit plates (23) are both in sliding contact with the upper end surface of the top plate (22).
4. The hem folding mold for the rear wall of a passenger car according to claim 3, characterized in that: The lower end surface of the top plate (22) is fixed with a fourth cylinder body (30) symmetrically distributed along the transverse central axis of the base (10) via a bracket, and a fourth piston rod (31) is slidably sleeved inside the fourth cylinder body (30) and penetrated therethrough.
5. The hem folding mold for the rear wall of a passenger car according to claim 4, characterized in that: The end of the fourth piston rod (31) extending outward is fixedly mounted with a connecting plate (32), the outward side of the connecting plate (32) is fixedly mounted with a right angle bracket (33), and the other end of the right angle bracket (33) is fixedly connected to the surface of the limit plate (23) by means of screws.
6. The hem folding mold for the rear panel of a passenger car according to claim 1, characterized in that: The connecting block (17) is provided with a rod groove (40) inside, and the rod groove (40) is slidably inserted and docked with the second piston rod (16). The inner wall of the connecting block (17) is also provided with a fork groove (41) connected with the rod groove (40). A fork block (42) penetrating the fork groove (41) is slidably sleeved inside the fork groove (41), and a shift pin (43) extending outward and penetrating the connecting block (17) is fixed on the outer wall of the fork block (42).
7. The hem folding mold for the rear panel of a passenger car according to claim 6, characterized in that: The inner wall of the fork groove (41) is provided with a spring (44), and the two ends of the spring (44) are respectively welded to the surface of the shift pin (43) and the inner wall of the fork groove (41), and the surface of the second piston rod (16) is provided with a slot (45) for slidingly inserting and docking with the fork block (42).