Press-fit equipment suitable for automobile bent pipes of multiple sizes

Abstract

The invention relates to the technical field of automobile accessory machining, in particular to press-fit equipment suitable for automobile elbows of multiple sizes, which comprises a supporting table, a connecting frame is arranged on the upper end face of the supporting table, the connecting frame is located on one side of the supporting table, a top plate is arranged on the connecting frame, a press-fit cylinder is arranged on the top plate, and a piston rod of the press-fit cylinder is connected with a press-fit block. The two ends of the bidirectional screw are in threaded connection with connecting plates respectively, the ends, away from the bidirectional screw, of the connecting plates are connected with fixing plates, the fixing plates are in sliding connection with the pressing block, a bent pipe is placed between the two fixing plates, a supporting seat is arranged below the bent pipe, a pipe cover is placed on the supporting seat, and a rotating pipe is arranged in the pressing block. A telescopic block is connected into the rotating pipe in a threaded mode and arranged in the rotating pipe in a penetrating mode, and the rotating pipe is connected with the two-way screw rod through a bevel gear pair. Through the fixing plate and the telescopic block, elbow pipes of various sizes can be machined, and the adaptability and stability of the device can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a pressing device suitable for automobile elbows of multiple sizes. Background Art

[0002] Automotive pipe bends are curved metal pipes used during the automotive manufacturing process to transport various fluids (such as fuel, coolant, hydraulic oil, etc.) or to discharge gases (such as in the exhaust system). These bends are typically made of stainless steel, aluminum, or other corrosion-resistant materials, with specific bend angles and radii to accommodate the complex interior layout requirements of the vehicle. Some bends require the pipe body and cap to be pressed together using specialized pressing equipment.

[0003] For related technologies, please refer to the patent application with publication number CN112756491A, which discloses a crimping device for crimping automobile elbows and ball joints. The crimping device includes a frame, an elbow positioning assembly, a ball joint positioning assembly, and a crimping assembly. The elbow positioning assembly, the ball joint positioning assembly, and the crimping assembly are all mounted on the frame. The elbow positioning assembly is used to position the elbow, and the ball joint positioning assembly is used to position the ball joint. The crimping assembly includes a support, a pressure head, and a driver. The support is used to support the connection between the elbow and the ball joint. The driver is used to drive the pressure head to move up and down. The pressure head is located above the support and is used to crimp the connection between the elbow and the ball joint. The crimping device is used to crimp the automobile elbow and the ball joint together, which can improve the matching accuracy between the two, thereby improving the product qualification rate.

[0004] Regarding the aforementioned related technologies, the conventional practice for pressing the tube body and tube cover together is to use a single pneumatic cylinder to achieve this. However, due to localized stress concentration in the contact area between the tube cover and the tube body at the moment of pressing, relative displacement or deformation instability between the components can easily occur, resulting in reduced stability during the pressing process, affecting assembly precision and process consistency. Existing equipment has poor adaptability, making it difficult to ensure consistent pressing quality when dealing with multi-specification and multi-size automotive tube bends. Therefore, a pressing device suitable for multi-size automotive tube bends is urgently needed to address the aforementioned technical issues. Summary of the Invention

[0005] In order to improve the stability of the pressing process, the present invention provides a pressing device that is suitable for automobile elbows of multiple sizes.

[0006] The present invention provides a pressing device suitable for automobile elbows of various sizes, which adopts the following technical solutions: The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure is hinged on the base plate, is fixed with a backing pin on the interlocking structure, and an end of sliding panel withstands on the backing pin of interlocking structure.

[0007] By adopting the above technical solution, when it is necessary to press-fit elbows of different sizes, the elbow is first placed between the two fixed plates, and the telescopic block is pressed against the elbow. Then the elbow is pushed in the setting direction of the telescopic block. Since the telescopic block is threadedly connected to the rotating tube, the rotating tube is driven to rotate. The rotating tube is connected to the bidirectional screw through a bevel gear pair. The power is transmitted to the bidirectional screw through the bevel gear pair, causing it to rotate synchronously, driving the two connecting plates and the fixed plate to move synchronously toward or away from each other, thereby realizing automatic centering and clamping of elbows of different diameters, ensuring uniform clamping force and precise positioning, and improving the stability of the device.

[0008] Optionally, a composite screw is provided in the support seat, and two ends of the composite screw are provided with two thread sections with different rotation directions. The two ends of the composite screw are respectively threadedly connected to abutment tubes, which are slidingly connected to the support seat. When pressed together, the abutment tubes press against the inner wall of the tube cover.

[0009] By adopting the above technical solution, when the tube cover is placed on the support seat, the staff starts the composite screw. When the composite screw rotates, the two abutment tubes move synchronously toward or away from each other under the drive of the thread. Before pressing, by rotating the composite screw, the two abutment tubes can simultaneously press against the inner wall of the tube cover from both sides, thereby realizing automatic centering and firm clamping of the tube cover, and preventing it from shifting or shaking during the pressing process.

[0010] Optionally, the end of the telescopic block away from the bent pipe is connected to a connecting rod 1 through a pressing block. The connecting rod 1 is vertically arranged, and the bottom end of the connecting rod 1 is fixedly connected to a connecting rod 2. The connecting rod 2 is horizontally arranged, and a rack is provided at the end of the connecting rod 2 away from the connecting rod 1. The upper end surface of the support platform is provided with a slide groove, and the slide groove is extended along the length direction of the support platform. The connecting rod 1 is located at the slide groove of the support platform, and a connecting rod is provided between the support seat and the connecting rod 1. One end of the connecting rod is connected to the compound screw through a bevel gear pair, and the other end is coaxially fixedly connected to a rotating gear, and the rotating gear is meshed with the rack.

[0011] By adopting the above technical solution, when the position of the bent pipe needs to be fixed, the staff will push the bent pipe inward, driving the telescopic block to move horizontally, thereby driving the synchronous movement of connecting rod one and connecting rod two. The movement of connecting rod two drives the rack to move, thereby driving the rotating gear to rotate. The rotation of the rotating gear drives the connecting rod to rotate, thereby driving the composite screw to rotate under the transmission of the bevel gear pair. By adjusting the initial position of the composite screw and the abutment tube stroke, pipe covers of different diameters can be adapted. The linkage structure itself is not affected by the size and can still ensure the coordination of the clamping stroke and the pressing stroke. It is suitable for the flexible production of multiple types of bent pipes, and realizes the fully automatic linkage control of the clamping, supporting and positioning actions during the bending and pressing process, which significantly improves the intelligence level of the equipment.

[0012] Optionally, a vertical plate is provided on the side of the support seat away from the pressing block, the vertical plate is located at the slide groove of the support platform, the top of the vertical plate is horizontally connected to an abutment plate, the bottom end of the vertical plate is threadedly connected to a movable screw, the movable screw is extended along the length direction of the support block, one end of the movable screw is connected to the connecting rod through a bevel gear pair, and when pressed, the abutment plate abuts against the bent pipe.

[0013] By adopting the above technical solution, as the pressing action proceeds, the connecting rod drives the movable screw to rotate through the newly added bevel gear pair, driving the vertical plate connected to its bottom end to move along the direction of the support platform slide, so that the abutment plate at the top is synchronously pushed forward until it abuts against the outer wall or end of the bent pipe, forming a reliable axial support. The supporting force and the pressing force form a reaction force pair, which effectively prevents the bent pipe from bending, deflecting or becoming unstable during the pressing process, ensuring a smooth and precise pressing process.

[0014] Optionally, a connecting groove is provided on the upper end surface of the top plate, a baffle is provided at the opening of the connecting groove, two return springs are provided in the top plate, and one end of the two return springs close to the baffle is fixedly connected to the two ends of the baffle respectively, the curved portion of the bent pipe is located at the connecting groove of the top plate, and the baffle abuts against the curved portion of the bent pipe.

[0015] By adopting the above technical solution, through the coordinated setting of the baffle and the return spring, the bent part of the bent pipe is abutted against the baffle to form an axial limiting surface, which prevents the bent pipe from moving backward or axially offset due to force during the pressing process. In conjunction with the abutment plate at the end of the support seat, a three-point positioning system of "front end pressing + middle limit + rear end support" is formed, which greatly improves the overall positioning accuracy.

[0016] In summary, the present invention includes at least one of the following beneficial technical effects: By setting a support platform, a connecting frame, a top plate, a pressing cylinder, a pressing block, a bidirectional screw, a connecting plate, a fixing plate, a bent pipe and a pipe cover, when it is necessary to press-fit bent pipes of different sizes, the staff will place the bent pipe between the two fixing plates, and then start the bidirectional screw, which will clamp and position the bent pipes of different diameters, and place the pipe cover on the support seat so that it is facing the bent pipe, and then start the pressing cylinder, which will drive the pressing block downward to achieve the pressing of the bent pipe and the pipe cover. It is suitable for the pressing process of automobile bent pipes of various specifications and bending shapes, which is conducive to improving the adaptability of the device. By setting a rotating tube and a telescopic block, when it is necessary to press-fit elbows of different sizes, the elbow is first placed between the two fixed plates, and the telescopic block is pressed against the elbow. Then the elbow is pushed in the direction in which the telescopic block is set. Since the telescopic block is threadedly connected to the rotating tube, the rotating tube is driven to rotate. The rotating tube is connected to the bidirectional screw through a bevel gear pair. The power is transmitted to the bidirectional screw through the bevel gear pair, causing it to rotate synchronously, driving the two connecting plates and the fixed plate to move synchronously toward or away from each other, thereby achieving automatic centering and clamping of elbows of different diameters, ensuring uniform clamping force and precise positioning. By setting up a composite screw and abutment tubes, when the tube cover is placed on the support seat, the staff starts the composite screw. When the composite screw rotates, the two abutment tubes move synchronously toward or away from each other under the drive of the thread. Before pressing, by rotating the composite screw, the two abutment tubes can simultaneously press against the inner wall of the tube cover from both sides, realizing automatic centering and firm clamping of the tube cover, and preventing it from shifting or shaking during the pressing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The diagram is a schematic diagram of the overall structure of a pressing device suitable for automobile elbows of various sizes.

[0018] Figure 2 The present invention is a schematic diagram of the overall structure of a pressing device suitable for automobile elbows of various sizes when not in use.

[0019] Figure 3 The present invention is a schematic diagram of the cross-sectional structure of a pressing device suitable for automobile elbows of various sizes.

[0020] Figure 4 This is a partial exploded view of the internal structure of the top plate.

[0021] Figure 5 yes Figure 3 Enlarged view of part A.

[0022] Figure 6 yes Figure 3 Magnified view of part B.

[0023] Explanation of the reference numerals: 10. Pipe cover; 20. Bend pipe; 1. Support platform; 11. Vertical plate; 12. Abutment plate; 13. Moving screw; 14. Connecting groove; 15. Baffle; 16. Return spring; 2. Pressing assembly; 21. Pressing cylinder; 22. Pressing block; 23. Connecting frame; 24. Top plate; 25. Bidirectional screw; 26. Connecting plate; 27. Fixed plate; 28. Rotating tube; 29. ​​Telescopic block; 3. Stabilizing assembly; 31. Composite screw; 32. Abutment tube; 33. Connecting rod one; 34. Connecting rod two; 35. Rack; 36. Connecting rod; 37. Rotating gear. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to all the accompanying drawings.

[0025] The embodiment of the present invention discloses a pressing device suitable for automobile bent pipes of various sizes.

[0026] Reference Figures 1 to 6 A press-fitting device for various sizes of automotive pipe bends includes a support platform 1, a press-fitting assembly 2, and a stabilizing assembly 3. The press-fitting assembly 2 is connected to the support platform 1, and the stabilizing assembly 3 is connected to the press-fitting assembly 2. The support platform 1 places a pipe cover 10, and the pipe bend 20 is placed on the press-fitting assembly 2. The press-fitting assembly 2 presses the pipe bend 20 onto the pipe cover 10, and the stabilizing assembly 3 ensures stability during the press-fitting process.

[0027] Reference Figures 1 to 6 The pressing assembly 2 includes a pressing cylinder 21 and a pressing block 22. The upper end surface of the support platform 1 is provided with a connecting frame 23. The connecting frame 23 is located on one side of the support platform 1. The top of the connecting frame 23 is fixedly connected to a top plate 24. The top plate 24 is arranged horizontally. The pressing cylinder 21 is arranged on the upper end surface of the top plate 24. The piston rod of the pressing cylinder 21 passes through the top plate 24 and is fixedly connected to the pressing block 22. A bidirectional screw 25 is provided in the pressing block 22. The two ends of the bidirectional screw 25 are fixedly connected. The ends are respectively threadedly connected with connecting plates 26, and the end of the connecting plate 26 away from the bidirectional screw 25 is fixedly connected with a fixing plate 27, and the fixing plate 27 is slidably connected to the pressing block 22. The two fixing plates 27 are arranged opposite to each other, and a bent pipe 20 is placed between the two fixing plates 27. The support seat is located below the bent pipe 20, and the support seat is arranged on the upper end surface of the support platform 1. A pipe cover 10 is placed on the support seat, and the pipe cover 10 is arranged with its mouth facing downward. When pressed, the pipe cover 10 is facing the bent pipe 20.

[0028] Reference Figures 1 to 6 When it is necessary to press-fit the elbows 20 of different sizes, the staff will place the elbow 20 between the two fixing plates 27, and then start the bidirectional screw 25. The bidirectional screw 25 realizes the clamping and positioning of the elbows 20 of different diameters, and places the pipe cover 10 on the support seat so that it is facing the elbow 20. Then, the pressing cylinder 21 is started, and the pressing cylinder 21 drives the pressing block 22 downward, thereby realizing the pressing of the elbow 20 and the pipe cover 10. It is suitable for the pressing process of automobile elbows 20 of various specifications and bending shapes, which is conducive to improving the adaptability of the device.

[0029] Reference Figures 1 to 6 A rotating tube 28 is provided in the pressing block 22. A telescopic block 29 is connected to the rotating tube 28 through a thread. The telescopic block 29 is passed through the rotating tube 28. The rotating tube 28 is connected to the bidirectional screw 25 through a bevel gear pair. When it is necessary to press-fit the elbows 20 of different sizes, the elbow 20 is first placed between the two fixed plates 27, and the telescopic block is pressed against the elbow 20. Then, the elbow 20 is pushed in the direction in which the telescopic block 29 is set. Since the telescopic block 29 is threadedly connected to the rotating tube 28, the rotating tube 28 is driven to rotate. The rotating tube 28 is connected to the bidirectional screw 25 through a bevel gear pair. The power is transmitted to the bidirectional screw 25 through the bevel gear pair, causing them to rotate synchronously, driving the two connecting plates 26 and the fixed plate 27 to move synchronously toward or away from each other, thereby achieving automatic centering and clamping of elbows 20 of different diameters, ensuring uniform clamping force and precise positioning.

[0030] Reference Figures 1 to 6 The stabilizing assembly 3 includes a composite screw 31, which is disposed in the support base. Two threaded sections with different rotation directions are provided at both ends of the composite screw 31. Abutment tubes 32 are threadedly connected to the ends of the composite screw 31, respectively. The abutment tubes 32 are slidably connected to the support base. During press-fitting, the abutment tubes 32 press against the inner sidewall of the pipe cover 10. When the pipe cover 10 is placed on the support base, the staff starts the composite screw 31. As the composite screw 31 rotates, the two abutment tubes 32 move synchronously toward or away from each other under the drive of the threads. Before press-fitting, by rotating the composite screw 31, the two abutment tubes 32 can simultaneously press against the inner sidewall of the pipe cover 10 from both sides, achieving automatic centering and secure clamping of the pipe cover 10, preventing it from deflecting or shaking during the press-fitting process.

[0031] Reference Figures 1 to 6The end of the telescopic block 29 away from the bent pipe 20 passes through the pressing block 22 and is connected to a connecting rod 1 33. The connecting rod 1 33 is vertically arranged, and the bottom end of the connecting rod 1 33 is fixedly connected to a connecting rod 2 34. The connecting rod 2 34 is horizontally arranged, and a rack 35 is provided at the end of the connecting rod 2 34 away from the connecting rod 1 33. A slide groove is provided on the upper end surface of the support platform 1, and the slide groove extends along the length direction of the support platform 1. The connecting rod 1 33 is located at the slide groove of the support platform 1. A connecting rod 36 is provided between the support seat and the connecting rod 1 33. One end of the connecting rod 36 is connected to the compound screw 31 through a bevel gear pair, and the other end is coaxially fixedly connected to a rotating gear 37, and the rotating gear 37 is meshed with the rack 35.

[0032] Reference Figures 1 to 6 When the position of the bent pipe 20 needs to be fixed, the staff pushes the bent pipe 20 inward, driving the telescopic block 29 to move horizontally, thereby driving the synchronous movement of the connecting rod 1 33 and the connecting rod 2 34. The movement of the connecting rod 2 34 drives the rack 35 to move, thereby driving the rotating gear 37 to rotate. The rotation of the rotating gear 37 drives the connecting rod 36 to rotate, thereby driving the compound screw 31 to rotate under the transmission of the bevel gear pair. By adjusting the initial position of the compound screw 31 and the stroke of the abutting tube 32, pipe covers 10 of different diameters can be adapted. The linkage structure itself is not affected by the size and can still ensure the coordination of the clamping stroke and the pressing stroke. It is suitable for the flexible production of multiple models of bent pipes 20, and realizes the fully automatic linkage control of the clamping, supporting and positioning actions during the pressing process of the bent pipe 20, which significantly improves the intelligence level of the equipment.

[0033] Reference Figures 1 to 6 The top of the vertical plate 11 is horizontally connected to the abutment plate 12, and the bottom end of the vertical plate 11 is threadedly connected to a moving screw 13, and the moving screw 13 is extended along the length direction of the support block. One end of the moving screw 13 is connected to the connecting rod 36 through a bevel gear pair. When pressing, the abutment plate 12 abuts against the bent pipe 20. As the pressing action proceeds, the connecting rod 36 drives the moving screw 13 to rotate through the newly added bevel gear pair, driving the vertical plate 11 connected to its bottom end to move along the direction of the slide groove of the support platform 1, so that the top abutment plate 12 is synchronously pushed forward until it abuts against the outer wall or end of the bent pipe 20, forming a reliable axial support. The supporting force and the pressing force form a reaction force pair, which effectively prevents the bent pipe 20 from bending, deflecting or becoming unstable during the press-fitting process, ensuring a smooth and accurate pressing process.

[0034] Reference Figures 1 to 6The top surface of the top plate 24 is provided with a connecting groove 14, and a baffle 15 is provided at the opening of the connecting groove 14. Two return springs 16 are provided inside the top plate 24, and the ends of the two return springs 16 close to the baffle 15 are fixedly connected to the two ends of the baffle 15. The curved portion of the elbow 20 is located at the connecting groove 14 of the top plate 24, and the baffle 15 abuts against the curved portion of the elbow 20. Through the coordinated arrangement of the baffle 15 and the return spring 16, the curved portion of the elbow 20 abuts against the baffle 15, forming an axial limit surface, preventing the elbow 20 from moving backward or axially deviating due to force during the pressing process. In conjunction with the abutment plate 12 at the end of the support seat, a three-point positioning system of "front-end pressing + middle limit + rear-end support" is formed, greatly improving the overall positioning accuracy.

[0035] Working principle: When the automobile elbow 20 needs to be pressed, the staff will place the elbow 20 and the pipe cover 10 at the designated position, and then press the elbow 20 inward. Since the telescopic block 29 is threadedly connected with the rotating tube 28, the rotating tube 28 is driven to rotate. The rotating tube 28 is connected to the bidirectional screw 25 through a bevel gear pair. The power is transmitted to the bidirectional screw 25 through the bevel gear pair, making it rotate synchronously, driving the two connecting plates 26 and the fixed plate 27 to move synchronously toward or away from each other, thereby achieving the pressing of elbows of different diameters. The automatic centering and clamping of the tube 20 and the lateral movement of the telescopic block 29 will simultaneously drive the synchronous movement of the connecting rod 1 33 and the connecting rod 2 34. The movement of the connecting rod 2 34 drives the rack 35 to move, thereby driving the rotating gear 37 to rotate. The rotation of the rotating gear 37 drives the connecting rod 36 to rotate, thereby driving the compound screw 31 to rotate under the transmission of the bevel gear pair. By rotating the compound screw 31, the two abutting tubes 32 can simultaneously press against the inner wall of the tube cover 10 from both sides, thereby realizing automatic centering and firm clamping of the tube cover 10.

[0036] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressing device adapted for automobile bends of various sizes, comprising a support platform (1), characterized in that: The upper end surface of the support platform (1) is provided with a connecting frame (23), the connecting frame (23) is located on one side of the support platform (1), the top end of the connecting frame (23) is fixedly connected to a top plate (24), the top plate (24) is arranged horizontally, the upper end surface of the top plate (24) is provided with a pressing cylinder (21), the piston rod of the pressing cylinder (21) passes through the top plate (24) and is fixedly connected to a pressing block (22), a bidirectional screw (25) is provided in the pressing block (22), the two ends of the bidirectional screw (25) are respectively threadedly connected to a connecting plate (26), the end of the connecting plate (26) away from the bidirectional screw (25) is fixedly connected to a fixing plate (27), the fixing plate (2 7) is slidably connected to the pressing block (22), two fixed plates (27) are arranged opposite to each other, a curved pipe (20) is placed between the two fixed plates (27), a support seat is provided below the curved pipe (20), the support seat is arranged on the upper end surface of the support platform (1), a pipe cover (10) is placed on the support seat, the pipe cover (10) is arranged with its mouth facing downward, when pressed, the pipe cover (10) is facing the curved pipe (20), a rotating pipe (28) is provided in the pressing block (22), the rotating pipe (28) is threadedly connected to a telescopic block (29), the telescopic block (29) is passed through the rotating pipe (28), and the rotating pipe (28) is connected to the bidirectional screw (25) through a bevel gear pair.

2. The pressing device for multi-size automobile elbows according to claim 1 is characterized in that: A composite screw (31) is provided in the support seat. Two ends of the composite screw (31) are provided with two threaded sections with different rotation directions. The two ends of the composite screw (31) are respectively threadedly connected to abutment tubes (32). The abutment tubes (32) are slidably connected to the support seat. When pressed together, the abutment tubes (32) press against the inner wall of the tube cover (10).

3. The pressing device for multi-size automobile elbows according to claim 2, characterized in that: The end of the telescopic block (29) away from the bent pipe (20) passes through the pressing block (22) and is connected to a connecting rod (33). The connecting rod (33) is vertically arranged. The bottom end of the connecting rod (33) is fixedly connected to a connecting rod (34). The connecting rod (34) is horizontally arranged. The end of the connecting rod (34) away from the connecting rod (33) is provided with a rack (35). The upper end surface of the support platform (1) is provided with a slide groove, which extends along the length direction of the support platform (1). The connecting rod (33) is located at the slide groove of the support platform (1). A connecting rod (36) is provided between the support seat and the connecting rod (33). One end of the connecting rod (36) is connected to the composite screw (31) through a bevel gear pair, and the other end is coaxially fixedly connected to a rotating gear (37). The rotating gear (37) is meshed with the rack (35).

4. The pressing device for multi-size automobile elbows according to claim 3 is characterized in that: A vertical plate (11) is provided on the side of the support seat away from the pressing block (22), and the vertical plate (11) is located at the slide groove of the support platform (1). The top end of the vertical plate (11) is horizontally connected to the abutment plate (12), and the bottom end of the vertical plate (11) is threadedly connected to a movable screw (13). The movable screw (13) is extended along the length direction of the support block, and one end of the movable screw (13) is connected to the connecting rod (36) through a bevel gear pair. When pressed, the abutment plate (12) abuts against the bent pipe (20).

5. The pressing device for multi-size automobile elbows according to claim 1 is characterized in that: A connecting groove (14) is provided on the upper end surface of the top plate (24), a baffle (15) is provided at the opening of the connecting groove (14), two return springs (16) are provided in the top plate (24), and one end of the two return springs (16) close to the baffle (15) is fixedly connected to the two ends of the baffle (15), respectively. The bent portion of the bent pipe (20) is located at the connecting groove (14) of the top plate (24), and the baffle (15) abuts against the bent portion of the bent pipe (20).

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