A bending device for special-shaped parts and application in production of powder tank truck tank body

Abstract

This invention provides a bending device for irregularly shaped parts and its application in the production of powder tank truck bodies. The device includes a lower platform and an upper platform located above the lower platform. Several lower supports are arranged parallel to each other on the top of the lower platform, and several upper supports are arranged parallel to each other on the bottom of the upper platform. The length direction of the lower supports is parallel to the length direction of the upper supports. Each lower support has a lower pressing member on its top, and each upper support has an upper pressing member on its bottom. A first forming part is vertically arranged on the outer top of each lower pressing member at both ends. A second forming part is vertically arranged on the top of the same end of all lower pressing members. When the upper platform descends to its lowest height, a forming space is formed between all the lower pressing members, upper pressing members, first forming parts, and second forming parts, and all upper pressing members are located inside the first and second forming parts. This invention provides a bending device for irregularly shaped parts and its application in the production of powder tank truck bodies, resulting in higher production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of bending technology, and relates to a bending device for irregularly shaped parts and its application in the production of powder tank truck bodies. Background Technology

[0002] Bending, as the name suggests, involves bending sheet metal or pipes to achieve the desired shape, and it is used in various industries. Bending machines are the most common equipment used in bending. However, for some irregular shapes, it is difficult to use bending machines. For example, bending a steel plate into a curved shape at the bottom, with three of the four sides of the top remaining vertical, is typically used in tank manufacturing for connection with other structures. For instance, the bottom of the rear end of a powder tanker truck has a curved (or curved) bottom section, with three of the top sides remaining vertical, for connection to other parts of the tank.

[0003] However, in actual production, it has been found that since these tank trucks are usually customized, their numbers are not very large. Therefore, in many cases, the plates are processed by bending them manually. This requires bending each plate individually, and because it is done manually, the uniformity is relatively poor, requiring frequent adjustments, resulting in low production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a bending device for irregularly shaped parts and its application in the production of powder tank truck bodies, aiming to solve the problem of low production efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides a bending device for irregularly shaped parts, including a lower platform and an upper platform located above the lower platform. A plurality of lower seats are arranged parallel to each other on the top of the lower platform, and a plurality of upper seats are arranged parallel to each other on the bottom of the upper platform. The length direction of the lower seats is parallel to the length direction of the upper seats. A lower pressing member is provided on the top of each lower seat, and an upper pressing member is provided on the bottom of each upper seat. A first forming part is vertically arranged on the top of the outer side of each lower pressing member located at both ends. A second forming part is vertically arranged on the top of the same end of all lower pressing members. When the upper platform descends to its lowest height, a forming space is formed between all the lower pressing members, the upper pressing members, the first forming part, and the second forming part, and all the upper pressing members are located inside the first forming part and the second forming part.

[0006] The lower platform is provided with a first adjustment mechanism for adjusting the position of the lower seat, and the upper platform is provided with a second adjustment mechanism for adjusting the position of the upper seat.

[0007] The present invention is further configured such that the number of the lower seat and the upper seat are both odd, and each lower seat has an upper seat above it. The lower seat located in the middle is fixedly connected to the lower platform, and the upper seat located in the middle is fixedly connected to the upper platform. The height of the top of the lower pressing member increases with the distance from the middle of the lower platform, and the height of the bottom of the upper pressing member increases with the distance from the middle of the lower platform. The bottom of the molding space is a curved surface with an upward opening.

[0008] The present invention is further configured such that the two ends of the top of the lower platform are provided with a first dovetail groove in parallel, the two ends of the bottom of the lower base are provided with a first dovetail body that movably cooperates with the first dovetail groove, the two ends of the bottom of the upper platform are provided with a second dovetail groove in parallel, and the two ends of the top of the upper base are provided with a second dovetail body that movably cooperates with the second dovetail groove.

[0009] The present invention is further configured such that a first adjustment groove is provided on the top of the lower platform body, the first adjustment mechanism includes a first adjustment screw that is horizontally rotatably connected to the lower platform body, and a first linkage seat is provided at the bottom of the lower base body at both ends. The two first linkage seats are movably located in the first adjustment groove, and the two first linkage seats are threadedly engaged with the first adjustment screw. The threads of the connection part of the first adjustment screw and the two first linkage seats have opposite directions of rotation. When the first adjustment screw rotates, the two first linkage seats move closer to each other or further away from each other.

[0010] Both sides of the lower seat are provided with a first receiving groove horizontally. The top and bottom of the first receiving groove are provided with a long strip-shaped first sliding groove. A first hinge arm is horizontally hinged in the first receiving groove, and the middle of two adjacent first hinge arms are hinged to each other. A first movable arm is vertically provided at the free end of the first hinge arm. The top and bottom of the first movable arm are movably attached to the inner wall of the first sliding groove.

[0011] The present invention is further configured such that a second adjustment groove is provided at the bottom of the upper platform, the second adjustment mechanism includes a second adjustment screw that is horizontally rotatably connected to the upper platform, and a second linkage seat is provided at the top of the upper base at both ends. The two second linkage seats are movably located in the second adjustment groove, and the two second linkage seats are threadedly engaged with the second adjustment screw. The threads of the connection parts of the second adjustment screw and the two second linkage seats have opposite directions of rotation. When the second adjustment screw rotates, the two second linkage seats move closer to or further away from each other.

[0012] The upper seat has a second receiving groove horizontally opened on both sides. The top and bottom of the second receiving groove are both provided with a long strip-shaped second sliding groove. A second hinge arm is horizontally hinged in the second receiving groove, and the middle of two adjacent second hinge arms are hinged to each other. A second movable arm is vertically arranged at the free end of the second hinge arm. The top and bottom of the second movable arm are movably attached to the inner wall of the second sliding groove.

[0013] The present invention is further configured such that a plurality of gradient seats are arranged parallel to the top of the lower seat, the length direction of the gradient seats is perpendicular to the length direction of the lower seat, and the bottom of the lower seat has a through-hole for the gradient seats to pass through. Each pressing member includes a plurality of pressing portions, and the bottom of each pressing portion is vertically provided with a cuboid-shaped lifting seat. The bottom of each lifting seat is horizontally rotatably provided with a lifting wheel, the bottom of the lifting wheel movably abutting against the top of the gradient seat. The lower seat has a mating opening for the lifting seats to move through, and the lifting seats movably fit against the inner wall of the mating opening. The height of the top of the gradient seat increases as the distance between it and the middle of the gradient seat increases.

[0014] Each of the upper pressing components includes several upper pressing sections. Each upper pressing section has a vertically arranged cuboid telescopic seat at its top. Each telescopic seat has horizontally arranged telescopic bodies on both sides of its top. A telescopic opening is vertically opened through the upper body for the telescopic seat to move through, and the telescopic seat is movably fitted against the inner wall of the telescopic opening. The bottom of the upper body has several elongated telescopic grooves. Each telescopic seat is movably fitted against the inner walls of the two sides of the telescopic groove. Guide grooves are opened on the inner walls of the two sides of the telescopic groove. Each telescopic body is movably fitted against the inner wall of the guide groove. The height of the guide groove increases with the increase of the distance between the guide groove and the middle of the guide groove. During the steel plate forming, all the upper pressing sections, all the lower pressing sections, all the first forming sections, and all the second forming sections are fitted against the steel plate.

[0015] The present invention is further configured such that the top of the lower pressing member near the middle of the lower seat body is rounded, and the bottom of the upper pressing member near the middle of the upper seat body is rounded.

[0016] The present invention also provides the application of the bending device for irregularly shaped parts described in any of the above claims in the production of powder tank truck bodies.

[0017] Compared with the prior art, the present invention provides a bending device for irregularly shaped parts and its application in the production of powder tank truck bodies. Firstly, in use, the lower platform is fixed in position, but the upper platform is externally connected to a lifting structure, such as a hydraulic cylinder. When bending the steel plate, the steel plate is first placed horizontally on top of the lower pressing member or the first and second forming parts. Then, the upper platform descends, and the lower pressing member acts on the top of the steel plate until the upper platform descends to a specified height. At this point, the steel plate is located within the forming space formed by the lower pressing member, the upper pressing member, the first forming part, and the second forming part. The middle of the steel plate is attached to all the lower and upper pressing members, and the edges are attached to the upper pressing member and the first forming part, as well as the upper pressing member and the second forming part. Both the first and second forming parts are vertical, with the two first forming parts located at both ends of the steel plate and the second forming part located on one side. Therefore, the top three sides of the steel plate are vertical, while the bottom is open upwards.

[0018] When forming different models or sizes, only the position of the lower seat body needs to be adjusted via the first adjustment mechanism, and the position of the upper seat body via the second adjustment mechanism. This allows for bending and forming of steel plates of different sizes. Therefore, in actual production, even if the quantity of a particular model of steel plate is small, it can be adapted to multiple different models by adjusting the positions, thus reducing usage and production costs. Furthermore, while some products may have certain differences, the differences in model or size are sometimes not significant. Therefore, by adjusting the positions of the lower and upper seat bodies, the applicable range remains quite large. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 yes Figure 1 Enlarged view of section A;

[0021] Figure 3 yes Figure 1 Enlarged view of section B;

[0022] Figure 4 This is a cross-sectional view of the present invention. Figure 1 ;

[0023] Figure 5 yes Figure 4 Enlarged view of section C;

[0024] Figure 6 yes Figure 4 Enlarged view of section D;

[0025] Figure 7 This is a cross-sectional view of the present invention. Figure 2 ;

[0026] Figure 8 yes Figure 7 Enlarged view of section E in the middle;

[0027] Figure 9 yes Figure 7 Enlarged view of section F in the middle;

[0028] Figure 10 This is a cross-sectional view of the present invention. Figure 3 ;

[0029] Figure 11 yes Figure 10 Enlarged view of section G in the middle;

[0030] Figure 12 yes Figure 10 Enlarged view of section H in the middle;

[0031] Figure 13 This is a schematic diagram of the lower seat portion of the present invention;

[0032] Figure 14 yes Figure 13 Enlarged view of section I;

[0033] Figure 15 This is a schematic diagram of the lower seat and the upper seat in this invention.

[0034] The components are as follows: 1. Lower platform; 2. Upper platform; 3. Lower seat; 4. Upper seat; 5. Lower pressing component; 5a. Lower pressing section; 5b. Lifting seat; 6. Upper pressing component; 6a. Upper pressing section; 6b. Telescopic seat; 7. First forming part; 8. Second forming part; 9. First dovetail body; 10. First adjusting groove; 11. First adjusting screw; 12. First linkage seat; 13. First receiving groove; 14. First sliding groove; 15. First hinge arm; 16. First movable arm; 17. Second dovetail body; 18. Second adjusting groove; 19. Second adjusting screw; 20. Second linkage seat; 21. Second receiving groove; 22. Second hinge arm; 23. Gradient seat; 24. Through opening; 25. Lifting wheel; 26. Mating opening; 27. Telescopic body; 28. Telescopic opening; 29. ​​Telescopic groove; 30. Guide groove. Detailed Implementation

[0035] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the bending device for irregularly shaped parts proposed in this invention and its application in the production of powder tank truck bodies. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this invention. The same or similar reference numerals in the drawings represent the same or similar parts.

[0036] A bending device for irregularly shaped parts, such as Figures 1 to 15 As shown, the system includes a lower platform 1 and an upper platform 2 located above the lower platform 1. Several lower bases 3 are arranged parallel to each other on the top of the lower platform 1, and several upper bases 4 are arranged parallel to each other on the bottom of the upper platform 2. The length direction of the lower bases 3 is parallel to the length direction of the upper bases 4. Each lower base 3 has a lower pressing member 5 on its top, and each upper base 4 has an upper pressing member 6 on its bottom. The outer top of each lower pressing member 5 at both ends has a first forming part 7 vertically arranged, and the top of the same end of all lower pressing members 5 has a second forming part 8 vertically arranged. When the upper platform 2 descends to its lowest height, a forming space is formed between all the lower pressing members 5, the upper pressing members 6, the first forming part 7, and the second forming part 8, and all the upper pressing members 6 are located inside the first forming part 7 and the second forming part 8.

[0037] The lower platform 1 is provided with a first adjustment mechanism for adjusting the position of the lower seat 3, and the upper platform 2 is provided with a second adjustment mechanism for adjusting the position of the upper seat 4.

[0038] The number of lower seat bodies 3 and upper seat bodies 4 is odd. Each lower seat body 3 has an upper seat body 4 above it. The lower seat body 3 located in the middle is fixedly connected to the lower platform body 1, and the upper seat body 4 located in the middle is fixedly connected to the upper platform body 2. The height of the top of the lower pressing member 5 increases with the distance from the middle of the lower platform body 1. The height of the bottom of the upper pressing member 6 increases with the distance from the middle of the lower platform body 1. The bottom of the molding space is a curved surface with an opening facing upwards.

[0039] The lower platform 1 has parallel first dovetail grooves at both ends of its top, the lower base 3 has first dovetail bodies 9 at both ends of its bottom that are movably fitted with the first dovetail grooves, the upper platform 2 has parallel second dovetail grooves at both ends of its bottom, and the upper base 4 has second dovetail bodies 17 at both ends of its top that are movably fitted with the second dovetail grooves.

[0040] The top of the lower platform 1 is provided with a first adjustment groove 10. The first adjustment mechanism includes a first adjustment screw 11 that is horizontally rotatably connected to the lower platform 1. The bottom of the lower base 3 at both ends is provided with a first linkage seat 12. The two first linkage seats 12 are movably located in the first adjustment groove 10, and the two first linkage seats 12 are threadedly engaged with the first adjustment screw 11. The threads of the first adjustment screw 11 and the two first linkage seats 12 are in opposite directions. When the first adjustment screw 11 rotates, the two first linkage seats 12 move closer to each other or further away from each other.

[0041] The lower seat 3 has a first receiving groove 13 horizontally opened on both sides. The top and bottom of the first receiving groove 13 are both provided with a long strip first sliding groove 14. The first receiving groove 13 is horizontally hinged with a first hinge arm 15, and the middle of two adjacent first hinge arms 15 are hinged to each other. The free end of the first hinge arm 15 is vertically provided with a first movable arm 16. The top and bottom of the first movable arm 16 are movably attached to the inner wall of the first sliding groove 14.

[0042] The bottom of the upper platform 2 is provided with a second adjustment groove 18. The second adjustment mechanism includes a second adjustment screw 19 that is horizontally rotatably connected to the upper platform 2. The top of the upper seat 4 at both ends is provided with a second linkage seat 20. The two second linkage seats 20 are movably located in the second adjustment groove 18, and the two second linkage seats 20 are threadedly engaged with the second adjustment screw 19. The threads of the connection part between the second adjustment screw 19 and the two second linkage seats 20 are in opposite directions. When the second adjustment screw 19 rotates, the two second linkage seats 20 move closer to each other or further away from each other.

[0043] The upper seat 4 has a second receiving groove 21 horizontally opened on both sides. The top and bottom of the second receiving groove 21 are both provided with a long strip-shaped second sliding groove. The second receiving groove 21 is horizontally hinged with a second hinge arm 22, and the middle of two adjacent second hinge arms 22 are hinged to each other. The free end of the second hinge arm 22 is vertically provided with a second movable arm. The top and bottom of the second movable arm are movably attached to the inner wall of the second sliding groove.

[0044] The lower seat 3 has several gradient seats 23 arranged parallel to each other on its top. The length direction of the gradient seats 23 is perpendicular to the length direction of the lower seat 3. The bottom of the lower seat 3 has a through-hole 24 for the gradient seats 23 to pass through. Each pressing member 5 includes several pressing parts 5a. The bottom of each pressing part 5a has a vertically arranged cuboid lifting seat 5b. The bottom of each lifting seat 5b has a horizontally rotatable lifting wheel 25. The bottom of the lifting wheel 25 movably abuts against the top of the gradient seat 23. The lower seat 3 has a mating opening 26 for the lifting seat 5b to move through, and the lifting seat 5b movably fits against the inner wall of the mating opening 26. The height of the top of the gradient seat 23 increases as the distance between it and the middle of the gradient seat 23 increases.

[0045] Each of the upper pressing components 6 includes several upper pressing sections 6a. Each upper pressing section 6a has a vertically mounted rectangular telescopic seat 6b at its top. Each telescopic seat 6b has horizontally mounted telescopic bodies 27 on both sides of its top. A telescopic opening 28 is vertically provided through the upper seat body 4 for the telescopic seat 6b to move through, and the telescopic seat 6b movably fits against the inner wall of the telescopic opening 28. The bottom of the upper platform body 2 has several elongated telescopic grooves 29. Each of the telescopic bodies... Both sides of the retractable seat 6b are movably attached to the inner walls of the telescopic groove 29. The inner walls of the telescopic groove 29 are provided with guide grooves 30. Each telescopic body 27 is movably attached to the inner wall of the guide groove 30. The height of the guide groove 30 increases as the distance between it and the middle of the guide groove 30 increases. During the forming of the steel plate, all the upper pressing parts 6a, all the lower pressing parts 5a, all the first forming parts 7 and all the second forming parts 8 are attached to the steel plate.

[0046] The top of the lower pressing member 5 near the middle of the lower seat 3 is rounded, and the bottom of the upper pressing member 6 near the middle of the upper seat 4 is rounded.

[0047] The present invention also provides the application of a bending device for irregularly shaped parts as described in any of the preceding claims in the production of powder tank truck bodies.

[0048] The present invention provides a bending device for irregularly shaped parts and its application in the production of powder tank truck bodies. Firstly, in the use of the structure of this application, the position of the lower platform 1 is fixed, but the upper platform 2 is externally connected to a structure for lifting and lowering it, such as a hydraulic cylinder. When bending the steel plate, the steel plate is first placed horizontally on top of the lower pressing member 5 or the first forming part 7 and the second forming part 8. Then the upper platform 2 descends and acts on the top of the steel plate through the lower pressing member 5 until the upper platform 2 descends to the specified height. At this time, the steel plate is located in the forming space formed by the lower pressing member 5, the upper pressing member 6, the first forming part 7 and the second forming part 8, and the middle part of the steel plate is attached to all the lower pressing members 5 and the upper pressing member 6, and the edges are attached to the upper pressing member 6 and the first forming part 7 and the upper pressing member 6 and the second forming part 8. The first forming part 7 and the second forming part 8 are both vertical, and the two first forming parts 7 are located at both ends of the steel plate, and the second forming part 8 is located on one side of the steel plate. Therefore, the top three sides of the steel plate are vertical, while the bottom is open upwards.

[0049] When forming different models or sizes, only the position of the lower seat 3 needs to be adjusted via the first adjustment mechanism, and the position of the upper seat 4 via the second adjustment mechanism. This allows for bending and forming of steel plates of different sizes. Therefore, in actual production, even if the quantity of a particular model of steel plate is small, it can be adapted to multiple different models by adjusting the positions, thus reducing usage and production costs. Furthermore, while some products may have certain differences, the differences in model or size are sometimes not significant. Therefore, by adjusting the positions of the lower seat 3 and the upper seat 4, the applicable range remains quite large.

[0050] During actual bending, the height of the top of the lower pressing member 5 increases with the distance between it and the middle of the lower platform 1, while the height of the bottom of the upper pressing member 6 increases with the distance between it and the middle of the upper platform 2. Therefore, after forming, the middle of the steel plate takes on an upward-opening arc shape. Furthermore, regardless of where the lower base 3 moves, the first forming part 7 and the second forming part 8 remain vertical. Thus, three sides of the formed steel plate are vertical, facilitating welding or connection with other structures. Additionally, the sides of both the lower pressing member 5 and the upper pressing member 6 near the middle of the steel plate are arc-shaped, effectively preventing indentations during forming and improving product quality.

[0051] When pressing steel plates of different sizes, only the first adjusting screw 11 needs to be adjusted (manually or by motor drive). Its rotation simultaneously drives the two first linkage seats 12 closer to or further away. While the two outer first linkage seats 12 and the lower seat 3 move, the first hinge arm 15 and the second movable arm drive all other lower seat bodies 3 to move (the middle lower seat body 3 remains stationary). This allows for the simultaneous adjustment of the positions of all lower seat bodies 3, resulting in a uniform distribution of their positions. Similarly, the second adjusting screw 19 can also adjust the positions of all upper seat bodies 4.

[0052] Furthermore, since the top height of the gradient seat 23 increases with the distance from the middle of the upper platform 2, each lower seat 3 moves outwards, resulting in a greater top height for the corresponding lower pressing member 5 (i.e., lower pressing section 5a). However, regardless of the position, the first forming part 7 and the second forming part 8 remain vertical. Simultaneously, as the upper pressing section 6a moves, the telescopic body 27 is guided by the guide groove 30, causing the upper pressing section 6a to move outwards and its height to increase accordingly. Thus, even steel plates of different sizes or models can be pressed and deformed by all the upper pressing sections 6a and lower pressing sections 5a during bending. The raising and lowering of the upper pressing sections 6a and lower pressing sections 5a are also automatic, requiring no additional adjustment.

[0053] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0054] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A bending device for irregularly shaped parts, characterized in that, The system includes a lower platform (1) and an upper platform (2) located above the lower platform (1). Several lower support bodies (3) are arranged parallel to each other on the top of the lower platform (1), and several upper support bodies (4) are arranged parallel to each other on the bottom of the upper platform (2). The length direction of the lower support bodies (3) is parallel to the length direction of the upper support bodies (4). Each lower support body (3) has a lower pressing member (5) on its top, and each upper support body (4) has an upper pressing member (6) on its bottom. The lower support bodies (3) are located at both ends... The top of the outer side of each pressing part (5) is vertically provided with a first forming part (7), and the top of the same end of each of the lower pressing parts (5) is vertically provided with a second forming part (8). When the upper platform (2) descends to the lowest height, a forming space is formed between all the lower pressing parts (5), the upper pressing parts (6), the first forming part (7) and the second forming part (8), and all the upper pressing parts (6) are located inside the first forming part (7) and the second forming part (8). The lower platform (1) is provided with a first adjustment mechanism for adjusting the position of the lower seat (3), and the upper platform (2) is provided with a second adjustment mechanism for adjusting the position of the upper seat (4).

2. The bending device for irregularly shaped parts according to claim 1, characterized in that, The number of the lower seat (3) and the upper seat (4) is odd. Each lower seat (3) has an upper seat (4) above it. The lower seat (3) located in the middle is fixedly connected to the lower platform (1), and the upper seat (4) located in the middle is fixedly connected to the upper platform (2). The height of the top of the lower pressing member (5) increases with the distance from the middle of the lower platform (1). The height of the bottom of the upper pressing member (6) increases with the distance from the middle of the lower platform (1). The bottom of the molding space is a curved surface with an opening facing upwards.

3. The bending device for irregularly shaped parts according to claim 2, characterized in that, The lower platform (1) has a first dovetail groove opened in parallel at both ends of its top. The lower base (3) has a first dovetail body (9) that is movably engaged with the first dovetail groove at both ends of its bottom. The upper platform (2) has a second dovetail groove opened in parallel at both ends of its bottom. The upper base (4) has a second dovetail body (17) that is movably engaged with the second dovetail groove at both ends of its top.

4. The bending device for irregularly shaped parts according to claim 3, characterized in that, The top of the lower platform (1) is provided with a first adjustment groove (10). The first adjustment mechanism includes a first adjustment screw (11) that is horizontally rotatably connected to the lower platform (1). The bottom of the lower base (3) at both ends is provided with a first linkage seat (12). The two first linkage seats (12) are movably located in the first adjustment groove (10), and the two first linkage seats (12) are threadedly engaged with the first adjustment screw (11). The threads of the first adjustment screw (11) and the two first linkage seats (12) are opposite in direction. When the first adjustment screw (11) rotates, the two first linkage seats (12) move closer to each other or further away from each other. The lower seat (3) has a first receiving groove (13) horizontally opened on both sides. The top and bottom of the first receiving groove (13) are provided with a long strip first sliding groove (14). The first receiving groove (13) is provided with a first hinge arm (15) horizontally hinged. The middle of two adjacent first hinge arms (15) are hinged to each other. The free end of the first hinge arm (15) is provided with a first movable arm (16). The top and bottom of the first movable arm (16) are movably attached to the inner wall of the first sliding groove (14).

5. A bending device for irregularly shaped parts according to claim 4, characterized in that, The bottom of the upper platform (2) is provided with a second adjustment groove (18). The second adjustment mechanism includes a second adjustment screw (19) that is horizontally rotatably connected to the upper platform (2). The top of the upper seat (4) at both ends is provided with a second linkage seat (20). The two second linkage seats (20) are movably located in the second adjustment groove (18), and the two second linkage seats (20) are threadedly engaged with the second adjustment screw (19). The threads of the connection part of the second adjustment screw (19) and the two second linkage seats (20) are opposite in direction. When the second adjustment screw (19) rotates, the two second linkage seats (20) move closer to each other or further away from each other. The upper seat (4) has a second receiving groove (21) horizontally opened on both sides. The top and bottom of the second receiving groove (21) are provided with a long strip-shaped second sliding groove. The second receiving groove (21) is provided with a second hinge arm (22) horizontally hinged. The middle of two adjacent second hinge arms (22) are hinged to each other. The free end of the second hinge arm (22) is provided with a second movable arm vertically. The top and bottom of the second movable arm are movably attached to the inner wall of the second sliding groove.

6. The bending device for irregularly shaped parts according to claim 5, characterized in that, The top of the lower seat (3) is provided with several gradient seats (23) arranged parallel to each other. The length direction of the gradient seats (23) is perpendicular to the length direction of the lower seat (3). The bottom of the lower seat (3) is provided with a through-hole (24) for the gradient seats (23) to pass through. Each pressing member (5) includes several pressing parts (5a). The bottom of each pressing part (5a) is provided with a cuboid-shaped lifting seat (5b). Each lifting seat (5b) has a horizontally rotating lifting wheel (25) at its bottom. The bottom of the lifting wheel (25) moves against the top of the gradient seat (23). The lower seat body (3) has a mating opening (26) for the lifting seat (5b) to move through. The lifting seat (5b) moves against the inner wall of the mating opening (26). The height of the top of the gradient seat (23) increases as the distance between it and the middle of the gradient seat (23) increases. Each of the upper pressing components (6) includes several upper pressing sections (6a). Each upper pressing section (6a) has a vertically arranged rectangular telescopic seat (6b) at its top. Each telescopic seat (6b) has horizontally arranged telescopic bodies (27) on both sides of its top. A telescopic opening (28) is vertically opened through the upper seat body (4) for the telescopic seat (6b) to move through. The telescopic seat (6b) moves and fits against the inner wall of the telescopic opening (28). The bottom of the upper platform body (2) has several elongated telescopic grooves (29). Both sides of the telescopic seat (6b) are movably attached to the inner walls of both sides of the telescopic groove (29). The inner walls of both sides of the telescopic groove (29) are provided with guide grooves (30). Each telescopic body (27) is movably attached to the inner wall of the guide groove (30). The height of the guide groove (30) increases as the distance between it and the middle of the guide groove (30) increases. During the forming of the steel plate, all the upper pressing parts (6a), all the lower pressing parts (5a), all the first forming parts (7) and all the second forming parts (8) are attached to the steel plate.

7. The bending device for irregularly shaped parts according to claim 1, characterized in that, The top of the lower pressing member (5) near the middle of the lower seat (3) is rounded, and the bottom of the upper pressing member (6) near the middle of the upper seat (4) is rounded.

8. The application of the bending device for irregularly shaped parts according to any one of claims 1-7 in the production of powder tank truck bodies.

Images