A multi-bending mechanism for sheet metal parts

Abstract

The utility model relates to a bending mechanism technical field especially is a kind of multiple bending mechanism of sheet metal part, including workstation subassembly, workstation subassembly upper end fixedly connected with positioning assembly, positioning assembly inboard is equipped with pusher subassembly, pusher subassembly left end fixedly connected with clamping plate, pusher subassembly includes screw rod, spring is equipped with outside screw rod, spring right end is fixedly connected with screw bush through bolt pressure joint, and one end of screw rod is fixedly connected with expansion plate and push column in proper order, expansion plate outboard is fixedly connected with rubber seal ring positioning assembly and includes cylinder shell, cylinder shell inboard is equipped with air guide hole, oil reservoir and oil passage, and cylinder shell upper end is fixedly connected with sleeve shell and sealed air bag in proper order, in the utility model, device can be according to the difference of plate thickness automatic adjustment clamping force size, both ensure that sheet metal is always firm when force bending does not slip, also avoid that surface indentation or scratch is caused by excessive pressure, effectively promote finished product appearance quality and dimensional accuracy.

Description

Technical Field

[0001] This utility model relates to the field of bending mechanism technology, specifically a multiple bending mechanism for sheet metal parts. Background Technology

[0002] Sheet metal parts are metal parts with specific shapes and functions made from metal sheets through cold working processes such as shearing, stamping, bending, and welding. They are widely used in the shells and structural parts of automobiles, electrical appliances, and machinery. The "multiple bending mechanism" of sheet metal parts is a forming device that allows the sheet material to pass through multiple sets of upper and lower bending knives or rotating bending arms in a predetermined order in a continuous die or CNC bending unit, and bends it at different angles and directions at more than 10 times in sequence, thereby forming a complex three-dimensional shape in one go. When sheet metal has uneven thickness and requires multiple consecutive bends, it is necessary to feed the material before clamping. If the clamping force fluctuates with the thickness of the sheet metal, improper control of the clamping force may result in insufficient clamping force, causing instability during bending, or even indentation on the sheet metal surface, affecting product quality. Therefore, a multi-bending mechanism for sheet metal parts is proposed to address the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a multiple bending mechanism for sheet metal parts to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A multiple bending mechanism for sheet metal parts includes a worktable assembly. A positioning component is fixedly connected to the upper end of the worktable assembly. A pushing component is installed inside the positioning component. A clamping plate is fixedly connected to the left end of the pushing component. The pushing component includes a screw. A spring is sleeved on the outside of the screw. A threaded sleeve is fixedly connected to the right end of the spring by a bolt. An extension plate and a push column are fixedly connected to one end of the screw in sequence. A rubber sealing ring is fixedly connected to the outside of the extension plate. The positioning component includes a cylindrical shell. An air guide hole, an oil storage tank, and an oil passage are opened inside the cylindrical shell. A sleeve and a sealing airbag are fixedly connected to the upper end of the cylindrical shell in sequence. A solenoid valve is fixedly connected to the inside of the sleeve. The extension plate is slidably connected inside the oil storage tank opened in the cylindrical shell.

[0005] As a further optimization of this utility model, the workbench assembly includes a foot, a table plate is fixedly connected to the top of the foot, a vertical plate is fixedly connected to the top of the table plate, an electro-hydraulic rod is fixedly connected to the inner side of the vertical plate near the front end, and a push block is fixedly connected to the piston rod end of the electro-hydraulic rod.

[0006] As a further optimization of this utility model, the following features are provided: a through hole is provided on the inner side of the upright plate; the right side of the upright plate is fixedly connected to the left side of the cylindrical shell; and the through hole of the upright plate is slidably fitted with the push column.

[0007] As a further optimization of this utility model, the inner side of the threaded sleeve is provided with multiple reserved threaded holes, the end of the spring near the threaded sleeve is provided with a through hole, and the end of the spring away from the threaded sleeve is fixedly connected to the cylindrical shell.

[0008] As a further optimization of this utility model, the inner side of the screw sleeve is provided with a threaded hole, the outer side of the screw is fixed with a threaded strip, and the screw extends into the interior of the cylindrical shell.

[0009] As a further optimization of this utility model, the outer side of the rubber sealing ring is fitted with the inner side of the oil storage groove opened in the cylinder shell, the push column extends out of the inner side of the cylinder shell, and the push column is fixedly connected to the clamping plate.

[0010] As a further optimization of this utility model, the air guide hole is connected to the oil storage tank, the oil storage tank is connected to the inner side of the casing through the oil passage, the inner side of the casing is connected to the inner side of the sealing airbag, a sealing ring is fixedly connected to the inner side of the cylinder shell near the push column, and the oil storage tank is filled with hydraulic oil.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the positioning components and clamping plates are installed in the clamping stage of the sheet metal bending process. The clamping force can be automatically adjusted according to the difference in sheet thickness, which not only ensures that the sheet metal is always stable and does not slip when it is bent under force, but also avoids excessive pressure that may cause surface indentations or scratches. This effectively improves the appearance quality and dimensional accuracy of the finished product and significantly reduces the defect rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the driving component of this utility model; Figure 3 This is a schematic diagram of the screw sleeve structure of this utility model; Figure 4 This is a cross-sectional structural diagram of the positioning component of this utility model; Figure 5 This utility model Figure 4 A schematic diagram of the structure at point A; Figure 6 This is a schematic diagram of the solenoid valve structure of this utility model.

[0013] In the diagram: 1. Workbench assembly; 11. Legs; 12. Tabletop; 13. Vertical plate; 14. Electro-hydraulic rod; 15. Push block; 2. Push assembly; 21. Screw; 22. Screw sleeve; 23. Spring; 24. Extension plate; 25. Rubber sealing ring; 26. Push column; 3. Positioning assembly; 31. Shell; 32. Air vent; 33. Oil reservoir; 34. Sealing airbag; 35. Oil passage; 36. Solenoid valve; 37. Outer casing; 4. Plywood. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: A sheet metal part multiple bending mechanism includes a workbench assembly 1. A positioning assembly 3 is fixedly connected to the upper end of the workbench assembly 1. A pushing assembly 2 is installed inside the positioning assembly 3. A clamping plate 4 is fixedly connected to the left end of the pushing assembly 2. The pushing assembly 2 includes a screw 21. A spring 23 is sleeved on the outside of the screw 21. A screw sleeve 22 is fixedly connected to the right end of the spring 23 by bolt pressing. An extension plate 24 and a push column 26 are fixedly connected to one end of the screw 21 in sequence. A rubber sealing ring 25 is fixedly connected to the outside of the extension plate 24. The positioning assembly 3 includes a cylindrical shell 31. An air guide hole 32, an oil storage tank 33 and an oil passage 35 are opened inside the cylindrical shell 31. A sleeve 37 and a sealing airbag 34 are fixedly connected to the upper end of the cylindrical shell 31 in sequence. A solenoid valve 36 is fixedly connected to the inside of the sleeve 37. The extension plate 24 is slidably connected inside the oil storage tank 33 opened in the cylindrical shell 31.

[0017] As a further implementation of this solution, the workbench assembly 1 includes a foot 11, a table plate 12 is fixedly connected to the top of the foot 11, a vertical plate 13 is fixedly connected to the top of the table plate 12, an electric hydraulic rod 14 is fixedly connected to the inner side of the vertical plate 13 near the front end, and a push block 15 is fixedly connected to the piston rod end of the electric hydraulic rod 14. Through the above arrangement, the pushing assembly 2, the positioning assembly 3 and the sheet metal are fixed and supported, so that the sheet metal can be turned multiple times by the electric hydraulic rod 14 and the push block 15. As a further implementation of this solution, a through hole is provided on the inner side of the upright plate 13. The right side of the upright plate 13 is fixedly connected to the left side of the cylindrical shell 31. The through hole of the upright plate 13 is slidably engaged with the push column 26. Through the above arrangement, the positioning component 3 can be fixed, and the push column 26 can slide inside the upright plate 13, thereby improving the stability of the movement of the clamping plate 4. As a further implementation of this solution, the inner side of the screw sleeve 22 is provided with multiple reserved screw holes, the end of the spring 23 near the screw sleeve 22 is provided with a through hole, the end of the spring 23 away from the screw sleeve 22 is fixedly connected to the cylindrical shell 31, the inner side of the screw sleeve 22 is provided with a threaded hole, the outer side of the screw 21 is fixed with a threaded strip, and the screw 21 extends into the interior of the cylindrical shell 31. With the above settings, the clamping force of the sheet metal can be adjusted according to the thickness of the sheet metal, thereby improving the adaptability of the device. As a further implementation of this solution, the outer side of the rubber sealing ring 25 is fitted with the inner side of the oil storage groove 33 opened in the cylinder shell 31, the push column 26 extends out of the inner side of the cylinder shell 31, and the push column 26 is fixedly connected to the clamping plate 4. Through the above arrangement, the push column 26 pushes the clamping plate 4 to move, thereby clamping the sheet metal with the clamping plate 4 and improving the stability of sheet metal bending. As a further implementation of this solution, the air guide hole 32 is connected to the oil storage tank 33, the oil storage tank 33 is connected to the inner side of the housing 37 through the oil passage 35, the inner side of the housing 37 is connected to the inner side of the sealing airbag 34, and a sealing ring is fixedly connected to the inner side of the cylinder shell 31 near the push column 26. The oil storage tank 33 is filled with hydraulic oil. Through the above settings, this design changes the traditional mechanical clamping method, reduces the mechanical wear caused by the bending force on the sheet metal to the clamping mechanism, and improves the service life of the device.

[0018] Workflow: When fixing sheet metal of different thicknesses, the sheet metal is placed between two clamping plates 4, with the distance between each clamping plate 4 controlled at 1 cm. Depending on the thickness of the sheet metal, the solenoid valve 36 is closed to fix the position of the clamping plates 4. The bolts fixing the threaded sleeve 22 and the spring 23 are removed. By rotating the threaded sleeve 22, it moves away from or closer to the cylindrical shell 31. The further away the threaded sleeve 22 is from the cylindrical shell 31, the more the spring 23 is fixed to the threaded sleeve 22. At this time, the deformation of the spring 23 is greater, thus the push of the clamping plate 4 by the pushing component 2 is greater. After the deformation of the spring 23 is adjusted, the solenoid valve 36 is opened. At this time, the tension of the spring 23 on the threaded sleeve 22 causes the threaded sleeve 22 to drive the screw 21, the extension plate 24, the push column 26, and the clamping plate 4 to move towards the sheet metal. Hydraulic oil inside the oil reservoir 33 enters the sealed airbag 34 through the oil passage 35 and the sleeve 37. The sealed airbag 34 expands, and the force obtained by subtracting the elastic force of the spring 23, the deformation recovery force of the sealed airbag 34, and the friction force when the pushing component 2 moves, is used to fix the sheet metal. After the sheet metal is fixed, the solenoid valve 36 is closed to prevent the clamping plate 4 from shifting. Then, the push block 15 is moved by the electric hydraulic rod 14 to achieve the purpose of bending the sheet metal. By loosening and clamping the sheet metal multiple times, the sheet metal moves forward to achieve the purpose of bending the sheet metal multiple times. Based on the above principles, when clamping the sheet metal during the bending process, the device can control the clamping force for sheet metal of different thicknesses to ensure the stability of the sheet metal during bending. At the same time, it can significantly reduce the phenomenon of indentation caused by improper clamping force on the sheet metal and improve the quality of the finished product.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multiple bending mechanism for sheet metal parts, comprising a worktable assembly (1), characterized in that: The upper end of the workbench assembly (1) is fixedly connected to a positioning assembly (3), and a pushing assembly (2) is installed inside the positioning assembly (3). A clamping plate (4) is fixedly connected to the left end of the pushing assembly (2). The pushing assembly (2) includes a screw (21), a spring (23) is sleeved on the outside of the screw (21), a screw sleeve (22) is fixedly connected to the right end of the spring (23) by bolt pressing, an extension plate (24) and a push column (26) are fixedly connected to one end of the screw (21) in sequence, and a rubber sealing ring (25) is fixedly connected to the outside of the extension plate (24). The positioning component (3) includes a cylindrical shell (31), and the inner side of the cylindrical shell (31) is provided with an air guide hole (32), an oil storage tank (33) and an oil passage (35). The upper end of the cylindrical shell (31) is sequentially fixedly connected with a sleeve (37) and a sealing airbag (34), and the inner side of the sleeve (37) is fixedly connected with a solenoid valve (36). The extension plate (24) is slidably connected inside the oil storage tank (33) opened in the shell (31).

2. The sheet metal part multiple bending mechanism according to claim 1, characterized in that: The workbench assembly (1) includes a foot (11), a table plate (12) is fixedly connected to the top of the foot (11), a vertical plate (13) is fixedly connected to the top of the table plate (12), an electric hydraulic rod (14) is fixedly connected to the inner side of the vertical plate (13) near the front end, and a push block (15) is fixedly connected to the end of the piston rod of the electric hydraulic rod (14).

3. The sheet metal part multiple bending mechanism according to claim 2, characterized in that: The upright plate (13) has a through hole on its inner side. The right side of the upright plate (13) is fixedly connected to the left side of the cylindrical shell (31). The through hole of the upright plate (13) is slidably fitted with the push column (26).

4. The sheet metal part multiple bending mechanism according to claim 1, characterized in that: The inner side of the screw sleeve (22) is provided with multiple reserved screw holes, and the end of the spring (23) near the screw sleeve (22) is provided with a through hole. The end of the spring (23) away from the screw sleeve (22) is fixedly connected to the cylinder shell (31).

5. The sheet metal part multiple bending mechanism according to claim 1, characterized in that: The inner side of the screw sleeve (22) is provided with a threaded hole, and the outer side of the screw (21) is fixed with a threaded strip. The screw (21) extends into the interior of the cylindrical shell (31).

6. The sheet metal part multiple bending mechanism according to claim 1, characterized in that: The outer side of the rubber sealing ring (25) is fitted with the inner side of the oil storage groove (33) opened in the shell (31), the pusher (26) extends out of the inner side of the shell (31), and the pusher (26) is fixedly connected to the clamping plate (4).

7. The sheet metal part multiple bending mechanism according to claim 1, characterized in that: The air guide hole (32) is connected to the oil storage tank (33), the oil storage tank (33) is connected to the inner side of the casing (37) through the oil passage (35), the inner side of the casing (37) is connected to the inner side of the sealing airbag (34), the inner side of the cylinder shell (31) near the push column (26) is fixedly connected to a sealing ring, and the oil storage tank (33) is filled with hydraulic oil.

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