Hydraulic pipe bending device for metal pieces

Abstract

This utility model relates to the field of aluminum single-panel processing technology and discloses a hydraulic bending device for metal parts, including a base, four columns fixedly installed on the upper surface of the base, a top plate fixedly installed on the top of the four columns, a hydraulic cylinder fixedly installed on the top of the top plate, and a pressure head fixedly installed on the output end of the hydraulic cylinder. A positioning unit for clamping aluminum single panels is provided between the top plate and the base, and a synchronization module is provided on the upper surface of the base. By providing a synchronization module, the vertical plates are driven to slide through the sliding transmission between the slide rod and the vertical groove. At the same time, the vertical plates drive the rack to slide inside the guide plate. Due to the limitation of the synchronization gear, the two sets of racks in the guide plate will maintain synchronous movement in the horizontal direction, thereby ensuring that the vertical plates and clamping plates on both sides of the aluminum single panel maintain synchronous movement during sliding, thus avoiding excessive horizontal sliding distance of the clamping plate on one side of the aluminum single panel, which would affect the bending accuracy.

Description

Technical Field

[0001] This utility model relates to the field of aluminum single-panel processing technology, specifically to a hydraulic pipe bending device for metal parts. Background Technology

[0002] In the aluminum panel processing, the aluminum panel bending device is very important. It can fix the aluminum panel and then perform the bending operation, so that the aluminum panel is shaped into a specific shape for subsequent processing.

[0003] According to a public notice (Announcement No.: CN223097688U) of an aluminum panel bending device, the above application uses four aluminum panel clamps to easily clamp aluminum panels of different sizes through the cooperation of a multi-hole movable tube, a movable tube, a movable block and a first hydraulic push rod. The bending operation of the aluminum panel at different positions is realized by the slider. These features enable the device to adapt to aluminum panels of different sizes.

[0004] However, in actual use, the limited ductility of aluminum panels prevents them from extending excessively during bending. At larger bending angles, this device easily causes lateral strain on the positioning parts between the aluminum panel and the fixing clamp, making it difficult to ensure the synchronization of extension or displacement of the clamping parts on both sides. This not only affects bending accuracy but may also damage or deform the aluminum panel, thus reducing the bending quality. To address this, we propose a hydraulic bending device for metal parts. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic bending device for metal parts to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic pipe bending device for metal parts, comprising a base, four columns fixedly installed on the upper surface of the base, a top plate fixedly installed on the top of the four columns, a hydraulic cylinder fixedly installed on the top of the top plate, and a pressure head fixedly installed on the output end of the hydraulic cylinder. A positioning unit for clamping aluminum single plates is provided between the top plate and the base. A synchronization module is provided on the upper surface of the base. The synchronization module includes a vertical plate slidably installed on the upper surface of the base. A vertical groove is formed on the inner wall of the vertical plate. A sliding rod is movably installed inside the vertical groove. A clamping plate is connected through and fixedly connected to the sliding rod. A connecting rod is hinged to the side wall of the clamping plate. A limiting plate is fixedly installed at the end of the connecting rod. A fixing cylinder is sleeved on the outer wall of the connecting rod. A spring is fixedly connected to the side wall of the limiting plate. A guide plate is fixedly installed on the upper surface of the base. A gear is fixedly installed on the side wall of the vertical plate. A synchronization gear is rotatably installed on the inner wall of the guide plate.

[0007] Preferably, the positioning unit includes a crossbeam fixedly installed on the side wall of the column, two sets of linear motors fixedly installed on the upper surface of the crossbeam, a steel plate fixedly installed on the outer wall of the column away from the center of the base, a push plate slidably installed on the upper surface of the steel plate, the output ends of the two sets of linear motors fixedly connected to the side wall of the push plate, and the other side of the outer wall of the push plate fixedly connected to the end of the fixed cylinder.

[0008] Preferably, a clamping unit is provided on the side of the clamping plate away from the connecting rod. The clamping unit includes a U-shaped seat fixed to the outer wall of the clamping plate near the center of the base. A small cylinder is provided on the top of the U-shaped seat. A clamping plate is fixedly installed on the output end of the small cylinder. Multiple sets of clamping units are provided, and the multiple sets of clamping units are arranged in a linear array on the side wall of the clamping plate.

[0009] Preferably, the side wall of the guide plate is provided with a rectangular groove that matches the width of the connection between the rack and the vertical plate, and the rack meshes with the synchronous gear to achieve transmission. There are two sets of racks, and the two sets of racks are centrally symmetrical about the axis of the synchronous gear.

[0010] Preferably, the inner wall of the fixed cylinder is provided with a limiting groove, the inner diameter of the limiting groove is adapted to the outer diameter of the limiting plate, and the diameter of the limiting plate is larger than the diameter of the connecting rod, and the limiting plate and the limiting groove are in sliding fit.

[0011] Preferably, the side wall of the clamping plate near the connecting rod has a fan-shaped groove with a width greater than that of the connecting rod, and the central axis of the hinge point between the connecting rod and the clamping plate coincides with the axis of the slide rod.

[0012] Preferably, the inner wall of the vertical plate is provided with an arc-shaped groove, and a round rod is fixedly installed through the inner wall of the clamping plate, the round rod slidingly engaging with the arc-shaped groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This hydraulic bending device for metal parts is equipped with a synchronization module. During the deformation of the aluminum single plate under pressure, the clamping units on both sides will exert a pulling force on the clamping plate towards the center of the base, causing the clamping plates and clamping units on both sides to slide towards the center of the base. At this time, the vertical plate is driven to slide through the sliding transmission between the slide rod and the vertical groove. The vertical plate simultaneously drives the toothed rod to slide inside the guide plate. Due to the limitation of the synchronization gear, the two sets of toothed rods in the guide plate will maintain synchronous movement in the horizontal direction, thereby making the vertical plates and clamping plates on both sides of the aluminum single plate maintain synchronous movement when sliding, thus avoiding the clamping plate on one side of the aluminum single plate from sliding too far in the horizontal direction and affecting the bending accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2This is a partial structural illustration of the present utility model;

[0016] Figure 3 This is a cross-sectional view of the guide plate of this utility model;

[0017] Figure 4 This is an exploded view of the push plate and clamping plate of this utility model;

[0018] Figure 5 This is an exploded view of the push plate, clamping plate and vertical plate of this utility model;

[0019] Figure 6 This is a cross-sectional view of the fixed cylinder of this utility model.

[0020] The components represented by each number in the attached diagram are listed below: 1. Base; 2. Column; 3. Top plate; 4. Hydraulic cylinder; 5. Pressure head; 6. Horizontal frame; 7. Linear motor; 8. Push plate; 9. Steel plate; 10. Clamping plate; 11. Clamping unit; 12. Fixed cylinder; 13. Connecting rod; 14. Vertical plate; 15. Vertical groove; 16. Arc groove; 17. Slide rod; 18. Round rod; 19. Limiting groove; 20. Limiting plate; 21. Spring; 22. Guide plate; 23. Gear rack; 24. Synchronizing gear. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-6 The diagram illustrates a hydraulic pipe bending device for metal parts, comprising a base 1, four columns 2 fixedly mounted on the upper surface of the base 1, a top plate 3 fixedly mounted on the top of the four columns 2, a hydraulic cylinder 4 fixedly mounted on the top of the top plate 3, and a pressure head 5 fixedly mounted on the output end of the hydraulic cylinder 4. A positioning unit for clamping aluminum panels is provided between the top plate 3 and the base 1. A synchronization module is provided on the upper surface of the base 1, the synchronization module including a vertical plate 14 slidably mounted on the upper surface of the base 1, the inner wall of the vertical plate 14 being open. A vertical groove 15 is provided, and a sliding rod 17 is movably installed inside the vertical groove 15. The sliding rod 17 passes through and is fixedly connected to a clamping plate 10. A connecting rod 13 is hinged to the side wall of the clamping plate 10. A limiting plate 20 is fixedly installed at the end of the connecting rod 13. A fixing cylinder 12 is sleeved on the outer wall of the connecting rod 13. A spring 21 is fixedly connected to the side wall of the limiting plate 20. A guide plate 22 is fixedly installed on the upper surface of the base 1. A toothed rod 23 is fixedly installed on the side wall of the vertical plate 14. A synchronous gear 24 is rotatably installed on the inner wall of the guide plate 22.

[0023] Hydraulic cylinder 4 is located at the center of top plate 3. During operation, hydraulic cylinder 4 is activated to drive pressure head 5 to move downward and perform bending operation on fixed aluminum single panel. At the same time, two sets of positioning units are provided, which are symmetrically arranged about the vertical central axis of top plate 3. During use, they clamp and fix the aluminum single panel from both sides. Furthermore, two sets of vertical plates 14 are provided, which are mirror images of each other at both ends of clamping plate 10. The side walls of vertical plates 14 are in contact with the outer wall of clamping plate 10. Specifically, the width of vertical groove 15 is adapted to the outer diameter of slide rod 17, so that slide rod 17 can slide up and down and rotate inside vertical groove 15.

[0024] The positioning unit includes a crossbeam 6 fixedly installed on the side wall of the column 2. Two sets of linear motors 7 are fixedly installed on the upper surface of the crossbeam 6. A steel plate 9 is fixedly installed on the outer wall of the column 2 away from the center of the base 1. A push plate 8 is slidably installed on the upper surface of the steel plate 9. The output ends of the two sets of linear motors 7 are fixedly connected to the side wall of the push plate 8. The other side of the outer wall of the push plate 8 is fixedly connected to the end of the fixed cylinder 12.

[0025] Please see Figures 1 to 2 The two sets of linear motors 7 make the force on the push plate 8 more stable when it slides along the steel plate 9, and the output of the two sets of linear motors 7 also provides greater support to the push plate in the horizontal direction, thus ensuring the positioning effect of the aluminum single panel during the bending operation.

[0026] A clamping unit 11 is provided on the side of the clamping plate 10 away from the connecting rod 13. The clamping unit 11 includes a U-shaped seat fixed to the outer wall of the clamping plate 10 near the center of the base 1. A small cylinder is provided on the top of the U-shaped seat. A clamping plate is fixedly installed on the output end of the small cylinder. Multiple sets of clamping units 11 are provided, and multiple sets of clamping units 11 are arranged in a linear array on the side wall of the clamping plate 10.

[0027] The multiple clamping units 11 ensure that the aluminum panel can be clamped in the horizontal direction, so as to ensure the normal progress of bending operations. The small cylinders of the multiple clamping units 11 are connected to the same control module through wires, so as to facilitate unified control by the staff.

[0028] The side wall of the guide plate 22 is provided with a rectangular groove that matches the width of the connection between the rack 23 and the vertical plate 14. The rack 23 meshes with the synchronous gear 24 to achieve transmission. There are two sets of rack 23, and the two sets of rack 23 are centrally symmetrical about the axis of the synchronous gear 24.

[0029] Please see Figure 3The rack 23 is slidably connected to the inner surface of the guide plate 22. When the vertical plate 14 slides horizontally on the base 1, it drives the rack 23 to slide in the inner cavity of the guide plate 22. Due to the meshing transmission between the synchronous gear 24 and the two sets of racks 23, the two sets of racks 23 maintain the same speed during the process of moving towards or away from each other. This effectively avoids the vertical plate 14 on one side moving too fast, thereby avoiding excessive horizontal sliding distance of the clamping plate 10 on one side of the aluminum single plate, which would affect the accuracy during bending. Furthermore, since the two sets of racks 23 are centrally symmetrically arranged, the two sets of racks 23 will not directly touch during the movement process, so there will be no problem of motion interference.

[0030] The inner wall of the fixed cylinder 12 is provided with a limiting groove 19. The inner diameter of the limiting groove 19 is adapted to the outer diameter of the limiting plate 20, and the diameter of the limiting plate 20 is larger than the diameter of the connecting rod 13. The limiting plate 20 and the limiting groove 19 are in sliding fit.

[0031] Please see Figure 6 The limiting groove 19 is cylindrical, and the limiting plate 20 can only slide horizontally within the limiting groove 19. In the initial state (when the clamping plate 10 clamps the aluminum single plate), the limiting plate 20 is located at the end of the limiting groove 19 closest to the spring 21. The spring 21 has a contraction tendency. During the bending operation, due to the deformation of the aluminum single plate, the aluminum single plate will drive the clamping unit 11 and the clamping plate 10 to move away from the push plate 8. At this time, the limiting plate 20 will slide along the limiting groove 19 towards the clamping plate 10, while stretching the spring 21. Due to the limitation of the limiting groove 19, the limiting plate 20 has a maximum stroke, ensuring that the connecting rod 13 will not completely disengage from the fixed cylinder 12.

[0032] The side wall of the clamping plate 10 near the connecting rod 13 has a fan-shaped groove with a width greater than that of the connecting rod 13, and the central axis of the hinge point between the connecting rod 13 and the clamping plate 10 coincides with the axis of the slide rod 17.

[0033] By setting the sector groove, motion interference is avoided when the connecting rod 13 rotates and the clamping plate 10 rotates. When the clamping plate 10 rotates, it will deflect around the slide rod 17 as the rotation center, thus avoiding motion interference caused by the different rotation axis lines of the hinge point and the clamping plate 10.

[0034] The inner wall of the vertical plate 14 is provided with an arc-shaped groove 16, and a round rod 18 is fixedly installed through the inner wall of the clamping plate 10. The round rod 18 is slidably engaged with the arc-shaped groove 16.

[0035] The interplay between the arc groove 16 and the round rod 18 causes the clamping plate 10 to deflect along a preset track when subjected to the rotational tension generated by the deformation of the aluminum panel. This prevents the clamping plate 10 and the clamping unit 11 from moving randomly, which would affect the accuracy of the aluminum panel during bending and reduce the yield rate of the aluminum panel bending process.

[0036] Working principle: First, control the linear motor 7 to start, drive the push plate 8 to slide along the surface of the steel plate 9, so that the distance between the clamping plates 10 on both sides of the base 1 and the clamping unit 11 is slightly larger than the width of the aluminum single panel, and fix the outer walls of both sides of the aluminum single panel through the clamping unit 11. Then, start the linear motor 7 again to achieve the centering clamping and positioning of the aluminum single panel on the base 1.

[0037] Start the hydraulic cylinder 4 to control the pressure head 5 to move downward in the vertical direction. When the pressure head 5 contacts the top surface of the aluminum panel, it continues to move downward to bend the aluminum panel. During this process, the clamping units 11 on both sides of the aluminum panel will exert a pulling force on the clamping plate 10 towards the center of the base 1. Since the connecting rod 13 has a sliding characteristic in the fixed cylinder 12, the clamping plate 10 will slide towards the center of the base 1 in the horizontal direction. Through the cooperation of the sliding rod 17 and the vertical groove 15, the vertical plate 14 will slide along the upper surface of the base 1, and at the same time drive the rack 23 to slide inside the guide plate 22. Due to the limitation of the synchronous gear 24, the two sets of racks 23 in the guide plate 22 will maintain synchronous movement in the horizontal direction, so that the vertical plates 14 and the clamping plate 10 on both sides of the aluminum panel will maintain synchronous movement when sliding, thereby avoiding the problem that the clamping plate 10 on one side of the aluminum panel slides too far in the horizontal direction, which affects the bending accuracy.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] 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 hydraulic pipe bending device for metal pieces, comprising a base (1), four vertical columns (2) fixedly installed on the upper surface of the base (1), a top plate (3) fixedly installed on the top ends of the four vertical columns (2), a hydraulic cylinder (4) fixedly installed on the top of the top plate (3), and a pressure head (5) fixedly installed on the output end of the hydraulic cylinder (4), characterized in that: A positioning unit for clamping aluminum single plates is provided between the top plate (3) and the base (1). A synchronization module is provided on the upper surface of the base (1). The synchronization module includes a vertical plate (14) that is slidably installed on the upper surface of the base (1). A vertical groove (15) is provided on the inner wall of the vertical plate (14). A slide rod (17) is movably installed inside the vertical groove (15). A clamping plate (10) is connected through the slide rod (17). A connecting rod (13) is hinged to the side wall of the clamping plate (10). A limiting plate (20) is fixedly installed at the end of the connecting rod (13). A fixing cylinder (12) is sleeved on the outer wall of the connecting rod (13). A spring (21) is fixedly connected to the side wall of the limiting plate (20). A guide plate (22) is fixedly installed on the upper surface of the base (1). A toothed rod (23) is fixedly installed on the side wall of the vertical plate (14). A synchronization gear (24) is rotatably installed on the inner wall of the guide plate (22).

2. A hydraulic tube bending apparatus for a metal piece according to claim 1, characterized by: The positioning unit includes a crossbeam (6) fixedly installed on the side wall of the column (2). Two sets of linear motors (7) are fixedly installed on the upper surface of the crossbeam (6). A steel plate (9) is fixedly installed on the outer wall of the column (2) away from the center of the base (1). A push plate (8) is slidably installed on the upper surface of the steel plate (9). The output ends of the two sets of linear motors (7) are fixedly connected to the side wall of the push plate (8). The other side of the outer wall of the push plate (8) is fixedly connected to the end of the fixed cylinder (12).

3. A hydraulic tube bending apparatus for a metal piece according to claim 1, characterized by: A clamping unit (11) is provided on the side of the clamping plate (10) away from the connecting rod (13). The clamping unit (11) includes a U-shaped seat fixed on the outer wall of the clamping plate (10) near the center of the base (1). A small cylinder is provided on the top of the U-shaped seat. A clamping plate is fixedly installed on the output end of the small cylinder. Multiple sets of clamping units (11) are provided. Multiple sets of clamping units (11) are arranged in a linear array on the side wall of the clamping plate (10).

4. A hydraulic tube bending apparatus for a metal piece according to claim 1, characterized by: The guide plate (22) has a rectangular groove on its side wall that matches the width of the connection between the rack (23) and the vertical plate (14). The rack (23) meshes with the synchronous gear (24) to achieve transmission. There are two sets of racks (23), and the two sets of racks (23) are centrally symmetrical about the axis of the synchronous gear (24).

5. The hydraulic tube bending apparatus for a metal piece according to claim 1, characterized by: The inner wall of the fixed cylinder (12) is provided with a limiting groove (19). The inner diameter of the limiting groove (19) is adapted to the outer diameter of the limiting plate (20), and the diameter of the limiting plate (20) is greater than the diameter of the connecting rod (13). The limiting plate (20) and the limiting groove (19) are in sliding fit.

6. A hydraulic tube bending apparatus for a metal piece according to claim 1, characterized by: The side wall of the clamping plate (10) near the connecting rod (13) has a fan-shaped groove with a width greater than that of the connecting rod (13), and the central axis of the hinge point between the connecting rod (13) and the clamping plate (10) coincides with the axis of the slide rod (17).

7. A hydraulic tube bending apparatus for a metal piece according to claim 1, characterized by: The inner wall of the vertical plate (14) is provided with an arc groove (16), and a round rod (18) is fixedly installed through the inner wall of the clamping plate (10). The round rod (18) slides in conjunction with the arc groove (16).

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