Special-shaped bending clamp

Abstract

The utility model discloses a clamp for special-shaped bending. The clamp comprises a bottom plate; a first bending mechanism; the second bending mechanism is arranged on the first positioning guide rail and the second positioning guide rail in a sliding mode, and the second bending mechanism is provided with a second rotating disc rod assembly used for bending the product; a positioning mechanism; and the third bending device is used for bending the middle part of the product. According to the metal product bending machine, metal products are bent from the two sides at the same time through the first rotating disc rod assembly of the first bending mechanism and the second rotating disc rod assembly of the second bending mechanism, traditional heating and steel wire rope traction are not needed, the automation degree is higher, multiple times of bending can be conducted, operation complexity and time cost are reduced, and production efficiency is improved. And the production efficiency is effectively improved. In the utility model, the first turntable rod assembly of the first bending mechanism adopts a transmission mode that the cylinder drives the rack-gear, so that the structural stability is better, and the bending precision can be effectively improved.

Description

A type of irregularly shaped bending clamp Technical Fields

[0001] This utility model relates to the field of metal bending technology, and specifically to a clamp for bending irregular shapes. Background Technology:

[0002] In the past, people typically used manual or simple mechanical tools to bend metal products. With industrialization, the demands for bending precision and efficiency in metal products have continuously increased, driving the development of bending technology. As technology has advanced, fixtures have evolved from simple support and positioning tools to more complex designs, resulting in various fixtures specifically tailored to different metal products and bending requirements.

[0003] Currently available bending fixtures are small in size and can be used in various applications. For example, Chinese utility model patent application CN214768020U discloses a metal plate bending fixture, which includes a base plate and a traction plate. A fixing plate is provided above the base plate, and the fixing plate has two sets: one set is a bending plate, and the other set is a limiting plate. A heating frame is provided above the limiting plate. A wheel structure is provided on the side of the bending plate away from the limiting plate. The wheel structure consists of a bracket and a rotating wheel. The rotating wheel is connected to the bracket through a hollow shaft, and the hollow shaft is connected to the output shaft of a motor through a connecting key. Its structure is simple, its size is small, and it does not have high requirements for the environment in which it is used. It can be used to bend steel plates on-site when needed, without the need for parameter preset, saving time and effort.

[0004] However, this existing metal sheet bending fixture still has the following shortcomings:

[0005] This technical solution requires heating the metal product by adding fuel inside the firebox, and then using a steel wire rope to pull and bend the plate. This method is not only difficult to operate, but also easily affected by factors such as insufficient heating temperature and inconsistent steel wire rope traction, resulting in poor bending effect and difficulty in achieving the required shape and precision. Furthermore, the patented technology can only bend metal products once, and each bend requires re-clamping and positioning the metal product, which undoubtedly increases the complexity and time cost of operation, and also leads to low production efficiency.

[0006] In view of the above, the inventors propose the following technical solution. Invention content and utility model content:

[0007] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a clamp for bending irregular shapes.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a fixture for bending irregular shapes, comprising: a base plate on which a first positioning guide rail and a second positioning guide rail are provided; a first bending mechanism slidably disposed on the first and second positioning guide rails, and the first bending mechanism is provided with a first turntable rod assembly for bending the product; a second bending mechanism slidably disposed on the first and second positioning guide rails, and the second bending mechanism is provided with a second turntable rod assembly for bending the product; a positioning mechanism disposed between the first and second bending mechanisms and used to clamp the middle part of the product for positioning; and a third bending device for bending the middle part of the product.

[0009] Furthermore, in the above technical solution, the first bending mechanism includes a first fixed plate slidably mounted between the first positioning guide rail and the second positioning guide rail, a first turntable mounted on the first fixed plate, a first turntable rod assembly disposed on the first turntable and rotatable therewith, a first fixed seat disposed on the first fixed plate, a second fixed seat disposed at the opposite end of the first fixed seat, a first push cylinder disposed on the second fixed seat, a first push block connected to the output shaft of the first push cylinder and used to cooperate with the first fixed seat to clamp the product, a second cylinder fixed on the base plate and used to drive the first turntable to rotate, and a first transmission assembly transmissively disposed between the second cylinder and the first turntable.

[0010] Furthermore, in the above technical solution, the first turntable rod assembly includes a first turntable rod fixing seat disposed on the first turntable and a first turntable rod fixed on the first turntable by the first turntable rod fixing seat and used for extruding and bending the product.

[0011] Furthermore, in the above technical solution, the first transmission component includes a first rack connected to the output shaft of the second cylinder and capable of telescopic movement, and a first gear fixed to the lower end of the first turntable and meshing with the first rack.

[0012] Furthermore, in the above technical solution, the second bending mechanism includes a second fixed plate slidably mounted between the first positioning guide rail and the second positioning guide rail, a second turntable mounted on the second fixed plate, a second turntable rod assembly mounted on the second turntable and rotatable therewith, a third fixed seat mounted on the second fixed plate, a fourth fixed seat mounted opposite the third fixed seat, a third push cylinder mounted on the fourth fixed seat, a second push block connected to the output shaft of the third push cylinder and used to cooperate with the third fixed seat to clamp the product, a fourth cylinder fixed on the base plate and used to drive the second turntable to rotate, and a second transmission assembly transmissively mounted between the fourth cylinder and the first turntable.

[0013] Furthermore, in the above technical solution, the rotation direction of the first turntable is opposite to the rotation direction of the second turntable.

[0014] Furthermore, in the above technical solution, the second turntable rod assembly includes a second turntable rod fixing seat disposed on the second turntable and a second turntable rod fixed on the second turntable by the second turntable rod fixing seat and used for extruding and bending the product.

[0015] Furthermore, in the above technical solution, the second transmission component includes a second rack connected to the output shaft of the fourth cylinder and capable of telescopic movement, and a second gear fixed to the lower end of the second turntable and meshing with the second rack.

[0016] Furthermore, in the above technical solution, the third bending device includes a table, a fifth cylinder and a sixth cylinder disposed on the table, a fifth turntable and a sixth turntable rotatably disposed on the table, a fifth turntable rod assembly and a sixth turntable rod assembly respectively mounted on the fifth turntable and the sixth turntable, a fifth positioning post fixed on the table and used to bend the product in conjunction with the fifth turntable rod assembly, a sixth positioning post fixed on the table and used to bend the product in conjunction with the sixth turntable rod assembly, a seventh pushing cylinder disposed on the table, a fifth pushing block connected to the seventh pushing cylinder and used to push the product, a fifth transmission assembly tractably disposed between the fifth cylinder and the fifth turntable rod assembly, and a sixth transmission assembly tractably disposed between the sixth cylinder and the sixth turntable rod assembly.

[0017] Furthermore, in the above technical solution, the tabletop is provided with a fifth clearance hole and a sixth clearance hole for accommodating the fifth turntable and the sixth turntable, respectively.

[0018] After adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: In this utility model, the metal product is bent simultaneously from both sides by the first turntable rod assembly of the first bending mechanism and the second turntable rod assembly of the second bending mechanism, eliminating the need for traditional heating and wire rope traction, resulting in a higher degree of automation. Furthermore, it can perform multiple bends, reducing operational complexity and time costs, and effectively improving production efficiency. In addition, compared with existing structures, in this utility model, the first turntable rod assembly of the first bending mechanism uses a cylinder-driven rack and pinion transmission method, resulting in better structural stability and effectively improving bending accuracy. Figure description:

[0019] Figure 1 is a three-dimensional structural diagram of this utility model;

[0020] Figure 2 is an enlarged view of point A in Figure 1;

[0021] Figure 3 is a schematic diagram of the usage state of this utility model;

[0022] Figure 4 is a schematic diagram of the usage state of this utility model (II);

[0023] Figure 5 is a schematic diagram of the third usage state of this utility model;

[0024] Figure 6 is a structural schematic diagram of the third bending device in this utility model;

[0025] Figure 7 is a structural schematic diagram of the third bending device in this utility model from another perspective;

[0026] Figure 8 is a schematic diagram of the structure of the metal product after bending in this utility model;

[0027] Figure 9 is a schematic diagram of the usage state of this utility model. Detailed implementation method:

[0028] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0029] As shown in Figures 1 to 7, a jig for bending irregular shapes includes: a base plate 1, on which a first positioning guide rail 11 and a second positioning guide rail 12 are provided; a first bending mechanism 2, which is slidably disposed on the first positioning guide rail 11 and the second positioning guide rail 12, and the first bending mechanism 2 is provided with a first turntable rod assembly 23 for bending the metal product 100; a second bending mechanism 3, which is slidably disposed on the first positioning guide rail 11 and the second positioning guide rail 12, and the second bending mechanism 3 is provided with a second turntable rod assembly 33 for bending the metal product 100; a positioning mechanism 4, which is disposed between the first bending mechanism 2 and the second bending mechanism 3 and is used to clamp the middle part of the metal product 100 for positioning the metal product 100; and a third bending device 5, which is used to bend the middle part of the metal product 100.

[0030] In this invention, the metal product 100 is simultaneously bent from both sides by the first turntable rod assembly 23 of the first bending mechanism 2 and the second turntable rod assembly 33 of the second bending mechanism 3. This eliminates the need for traditional heating and wire rope traction, resulting in a higher degree of automation. Furthermore, it allows for multiple bends, reducing operational complexity and time costs, and effectively improving production efficiency. In addition, compared to existing structures, in this invention, the first turntable rod assembly 23 of the first bending mechanism 2 uses a cylinder-driven rack and pinion transmission method, resulting in better structural stability and effectively improving bending accuracy.

[0031] The first bending mechanism 2 includes a first fixed plate 21 slidably mounted between the first positioning guide rail 11 and the second positioning guide rail 12, a first turntable 22 mounted on the first fixed plate 21, a first turntable rod assembly 23 mounted on the first turntable 22 and rotatable therewith, a first fixed seat 24 mounted on the first fixed plate 21, a second fixed seat 25 mounted opposite the first fixed seat 24, a first push cylinder 26 mounted on the second fixed seat 25, a first push block 27 connected to the output shaft of the first push cylinder 26 and used to cooperate with the first fixed seat 24 to clamp the metal product 100, a second cylinder 28 fixed on the base plate 1 and used to drive the first turntable 22 to rotate, and a first transmission assembly 29 transmissively mounted between the second cylinder 28 and the first turntable 22. Here, when the equipment is running, the first pushing cylinder 26 first pushes the first pushing block 27 to cooperate with the first fixed seat 24 to clamp the metal product 100 and prevent it from moving accidentally. Then, the second cylinder 28 drives the first turntable 22 to rotate through the first transmission assembly 29. The first turntable 22 drives the first turntable rod assembly 23 to rotate and drive the outer end of the metal product 100 to bend for the first time. After the first bend is completed (as shown in Figure 3), the second cylinder 28 drives the first turntable 22 to rotate back. At this time, as shown in Figures 4 and 5, the first bending mechanism 2 slides along the first positioning guide rail 11 and the second positioning guide rail 12 toward the positioning mechanism 4. When it slides to a preset distance, the second bend and the third bend can be performed (as shown in Figures 4 and 5). The principle is roughly the same as the first bend, and will not be described in detail here.

[0032] Preferably, the first fixed base 24 is further provided with a first forming block 241 for forming support, which can effectively support the metal product 100 when the first turntable rod assembly 23 bends the metal product 100, so that the metal product 100 can be bent and formed better.

[0033] The second bending mechanism 3 includes a second fixed plate 31 slidably mounted between the first positioning guide rail 11 and the second positioning guide rail 12, a second turntable 32 mounted on the second fixed plate 31, a second turntable rod assembly 33 mounted on the second turntable 32 and rotatable therewith, a third fixed seat 34 mounted on the second fixed plate 31, a fourth fixed seat 35 mounted opposite the third fixed seat 34, a third push cylinder 36 mounted on the fourth fixed seat 35, a second push block 37 connected to the output shaft of the third push cylinder 36 and used to cooperate with the third fixed seat 34 to clamp the metal product 100, a fourth cylinder 38 fixed on the base plate 1 and used to drive the second turntable 32 to rotate, and a second transmission assembly 39 transmissively mounted between the fourth cylinder 38 and the first turntable 22. It is understandable that the second bending mechanism 3 and the first bending mechanism 2 are only opposite in direction and operate synchronously to bend both ends of the metal product 100 at the same time. Their structures are basically the same, and the bending principle can be referred to the first bending mechanism 2, which will not be elaborated here.

[0034] The first positioning guide rail 11 is provided with a first strip hole 111 and a second strip hole 112, and the second positioning guide rail 12 is provided with a third strip hole 123 and a fourth strip hole 124. The first bolt 311 and the third bolt 313 pass through both ends of the first fixing plate 21 and are slidably inserted into the first strip hole 111 and the third strip hole 123, so that the first fixing plate 21 can be adjusted laterally along the first strip hole 111 and the third strip hole 123. The second bolt 312 and the fourth bolt 314 pass through both ends of the second fixing plate 31 and are slidably inserted into the second strip hole 112 and the fourth strip hole 124, so that the second fixing plate 31 can be adjusted laterally along the second strip hole 112 and the fourth strip hole 124.

[0035] The first turntable rod assembly 23 includes a first turntable rod fixing seat 231 disposed on the first turntable 22 and a first turntable rod 232 fixed to the first turntable 22 via the first turntable rod fixing seat 231 and used for extruding and bending the metal product 100. The second turntable rod assembly 33 includes a second turntable rod fixing seat 331 disposed on the second turntable 32 and a second turntable rod 332 fixed to the second turntable 32 via the second turntable rod fixing seat 331 and used for extruding and bending the metal product 100. Here, since a large force is required to complete the bending, the first turntable rod assembly 23 uses the first turntable rod fixing seat 231 to reinforce the first turntable rod 232, and the second turntable rod assembly 33 uses the second turntable rod fixing seat 331 to reinforce the second turntable rod 332, in order to enhance the strength of the structure.

[0036] The rotation direction of the first turntable 22 is opposite to the rotation direction of the second turntable 32.

[0037] The first transmission assembly 29 includes a first rack 291 connected to the output shaft of the second cylinder 28 and capable of telescopic movement, and a first gear 292 fixed to the lower end of the first turntable 22 and meshing with the first rack 291. The second transmission assembly 39 includes a second rack 391 connected to the output shaft of the fourth cylinder 38 and capable of telescopic movement, and a second gear 392 fixed to the lower end of the second turntable 32 and meshing with the second rack 391. Here, both the first transmission assembly 29 and the second transmission assembly 39 use a gear-rack structure for transmission, which is simple in structure and has good stability. Similarly, the first transmission assembly 29 and the second transmission assembly 39 can also use a lead screw-nut or other transmission structure.

[0038] The third bending device 5 includes a table 51, a fifth cylinder 52 and a sixth cylinder 53 disposed on the table 51, a fifth turntable 54 and a sixth turntable 55 rotatably disposed on the table 51, a fifth turntable rod assembly 56 and a sixth turntable rod assembly 57 respectively mounted on the fifth turntable 54 and the sixth turntable 55, a fifth positioning post 58 fixed on the table 51 and used to match the fifth turntable rod assembly 56 for bending the metal product 100, a sixth positioning post 59 fixed on the table 51 and used to match the sixth turntable rod assembly 57 for bending the metal product 100, a seventh pushing cylinder 510 disposed on the table 51, a fifth pushing block 511 connected to the seventh pushing cylinder 510 and used to push the metal product 100, a fifth transmission assembly 512 transmissively disposed between the fifth cylinder 52 and the fifth turntable rod assembly 56, and a sixth transmission assembly 513 transmissively disposed between the sixth cylinder 53 and the sixth turntable rod assembly 57. Here, the third bending device 5 is used to perform a fourth bending on the metal product 100. Specifically, the metal product 100 after the above three bending is placed between the fifth positioning post 58 and the sixth positioning post 59. The seventh pushing cylinder 510 drives the fifth pushing block 511 to push the middle of the metal product 100 so that it is in close contact with the fifth positioning post 58 and the sixth positioning post 59. Then, the fifth cylinder 52 and the sixth cylinder 53 drive the fifth turntable 54 and the sixth turntable 55 to rotate respectively. Here, the rotation directions of the fifth turntable 54 and the sixth turntable 55 are opposite, and they drive the fifth turntable rod assembly 56 and the sixth turntable rod assembly 57 to bend the metal product 100 at the same time, and obtain the final bent shape (see Figure 8).

[0039] Among them, the fifth turntable rod assembly 56 and the sixth turntable rod assembly 57 are basically the same in structure as the first turntable rod assembly 23 and the second turntable rod 33, and can be referred to the first turntable rod assembly 23 and the second turntable rod 33; the fifth transmission assembly 512 and the sixth transmission assembly 513 are basically the same in structure as the first transmission assembly 29 and the second transmission assembly 39, and will not be described in detail here.

[0040] The tabletop 51 is provided with a fifth clearance hole 514 and a sixth clearance hole 515 for accommodating the fifth turntable 54 and the sixth turntable 55, respectively.

[0041] In one embodiment of this utility model, as shown in Figure 9, the base plate 1 and the table plate 5 are placed adjacent to each other on the combined plate 90. After the first turntable rod assembly 23 and the second bending mechanism 3 complete the first three bends on the metal product 100, the metal product 100 can be quickly transferred to the third bending device 5 for the fourth bend, which can improve the bending efficiency.

[0042] In summary, in this invention, the metal product 100 is simultaneously bent from both sides by the first turntable rod assembly 23 of the first bending mechanism 2 and the second turntable rod assembly 33 of the second bending mechanism 3. This eliminates the need for traditional heating and wire rope traction, resulting in a higher degree of automation. Furthermore, it allows for multiple bends, reducing operational complexity and time costs, and effectively improving production efficiency. In addition, compared to existing structures, in this invention, the first turntable rod assembly 23 of the first bending mechanism 2 uses a cylinder-driven rack and pinion transmission method, resulting in better structural stability and effectively improving bending accuracy.

[0043] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A clamp for irregular bending, characterized in that, include: A base plate (1) is provided with a first positioning guide rail (11) and a second positioning guide rail (12); a first bending mechanism (2) is slidably disposed on the first positioning guide rail (11) and the second positioning guide rail (12), and the first bending mechanism (2) is provided with a first turntable rod assembly (23) for bending the metal product (100); a second bending mechanism (3) is slidably disposed on the first positioning guide rail (11) and the second positioning guide rail (12), and the second bending mechanism (3) is provided with a second turntable rod assembly (33) for bending the metal product (100); a positioning mechanism (4) is disposed between the first bending mechanism (2) and the second bending mechanism (3) and is used to clamp the middle part of the metal product (100) to position the metal product (100); and a third bending device (5) is used to bend the middle part of the metal product (100).

2. The fixture for irregular bending according to claim 1, characterized in that: The first bending mechanism (2) includes a first fixed plate (21) slidably mounted between the first positioning guide rail (11) and the second positioning guide rail (12), a first turntable (22) mounted on the first fixed plate (21), a first turntable rod assembly (23) mounted on the first turntable (22) and rotatable therewith, a first fixed seat (24) mounted on the first fixed plate (21), a second fixed seat (25) mounted on the opposite end of the first fixed seat (24), a first push cylinder (26) mounted on the second fixed seat (25), a first push block (27) connected to the output shaft of the first push cylinder (26) and used to cooperate with the first fixed seat (24) to clamp the metal product (100), a second cylinder (28) fixed on the base plate (1) and used to drive the first turntable (22) to rotate, and a first transmission assembly (29) transmissively mounted between the second cylinder (28) and the first turntable (22).

3. The fixture for irregular bending according to claim 2, characterized in that: The first turntable rod assembly (23) includes a first turntable rod fixing seat (231) disposed on the first turntable (22) and a first turntable rod (232) fixed on the first turntable (22) by the first turntable rod fixing seat (231) and used for extruding and bending the metal product (100).

4. The fixture for irregular bending according to claim 2, characterized in that: The first transmission assembly (29) includes a first rack (291) connected to the output shaft of the second cylinder (28) and capable of telescopic movement, and a first gear (292) fixed to the lower end of the first turntable (22) and meshing with the first rack (291).

5. A clamp for irregular bending according to claim 2, characterized in that: The second bending mechanism (3) includes a second fixed plate (31) that can be slidably mounted between the first positioning guide rail (11) and the second positioning guide rail (12), a second turntable (32) mounted on the second fixed plate (31), a second turntable rod assembly (33) that is mounted on the second turntable (32) and can rotate therewith, a third fixed seat (34) that is mounted on the second fixed plate (31), a fourth fixed seat (35) that is mounted on the opposite end of the third fixed seat (34), a third push cylinder (36) that is mounted on the fourth fixed seat (35), a second push block (37) that is connected to the output shaft of the third push cylinder (36) and is used to cooperate with the third fixed seat (34) to clamp the metal product (100), a fourth cylinder (38) that is fixed on the base plate (1) and is used to drive the second turntable (32) to rotate, and a second transmission assembly (39) that is transmissively mounted between the fourth cylinder (38) and the first turntable (22).

6. The fixture for irregular bending according to claim 5, characterized in that: The rotation direction of the first turntable (22) is opposite to that of the second turntable (32).

7. The fixture for irregular bending according to claim 5, characterized in that: The second turntable rod assembly (33) includes a second turntable rod fixing seat (331) disposed on the second turntable (32) and a second turntable rod (332) fixed on the second turntable (32) by the second turntable rod fixing seat (331) and used for extruding and bending the metal product (100).

8. The fixture for irregular bending according to claim 5, characterized in that: The second transmission assembly (39) includes a second rack (391) connected to the output shaft of the fourth cylinder (38) and capable of telescopic movement, and a second gear (392) fixed to the lower end of the second turntable (32) and meshing with the second rack (391).

9. A clamp for irregular bending according to any one of claims 1-8, characterized in that: The third bending device (5) includes a table (51), a fifth cylinder (52) and a sixth cylinder (53) disposed on the table (51), a fifth turntable (54) and a sixth turntable (55) rotatably disposed on the table (51), a fifth turntable rod assembly (56) and a sixth turntable rod assembly (57) respectively mounted on the fifth turntable (54) and the sixth turntable (55), a fifth positioning post (58) fixed on the table (51) and used to match the fifth turntable rod assembly (56) to bend the metal product (100), and a fixed post on the table (51). 1) A sixth positioning post (59) for matching and bending the metal product (100) with the sixth turntable rod assembly (57), a seventh push cylinder (510) set on the table (51), a fifth push block (511) connected to the seventh push cylinder (510) and used to push the metal product (100), a fifth transmission assembly (512) transmissively disposed between the fifth cylinder (52) and the fifth turntable rod assembly (56), and a sixth transmission assembly (513) transmissively disposed between the sixth cylinder (53) and the sixth turntable rod assembly (57).

10. A clamp for irregular bending according to claim 9, characterized in that: The tabletop (51) is provided with a fifth clearance hole (514) and a sixth clearance hole (515) for accommodating the fifth turntable (54) and the sixth turntable (55), respectively.

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