Pipe expanding device for damper liquid storage barrel production and damper liquid storage barrel pipe expanding equipment

Abstract

The utility model discloses a pipe expanding device for producing a liquid storage barrel of a shock absorber. The pipe expanding device comprises a bottom plate, a base is arranged on the bottom plate, and a forming rod is arranged on the base; a group of guide columns are arranged on the bottom plate, and a top plate is arranged at the other ends of the guide columns; a driving device is arranged on the top plate; a pressure plate is arranged between the bottom plate and the top plate, and a guide hole is formed in the pressure plate; the pressure plate is provided with a pair of connecting rods, and the other ends of the connecting rods are provided with separating plates. A through hole is formed in the separating plate, and an annular separating tool is arranged on the through hole; a limiting head is arranged on the pressure plate and used for limiting the workpiece in the pipe expanding forming process. According to the pipe expanding device for producing the liquid storage barrel of the shock absorber, pipe expanding operation can be conducted on a pipe through a specific structure, a product can be automatically separated from the forming rod after pipe expanding is completed, the product is not damaged in the separation process, and then the percent of pass of the product is improved. In addition, the utility model correspondingly provides pipe expanding equipment for the liquid storage barrel of the shock absorber.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe expansion, in particular to a pipe expansion device and equipment for producing a shock absorber liquid storage cylinder. Background Art

[0002] With the continuous development of society, people's demands for automotive performance, such as power, economy, braking performance, handling stability, and ride comfort, are becoming increasingly stringent. A shock absorber is a damping element installed between the vehicle body and the roadwheels. Its function is to attenuate vehicle vibrations. Shock absorbers can reduce the amplitude and frequency of vibrations, thereby extending the fatigue life of the elastic element and improving passenger comfort. As a subassembly of the shock absorber, the reservoir is a crucial component, storing the damping oil and the working cylinder.

[0003] In the prior art, for liquid reservoirs with a stepped cylindrical structure, a necking process is typically used to form the stepped shape into cylindrical tubing. However, this necking process often causes damage to the reservoir surface, and after shrinking, there is coaxial deviation, which often causes the piston rod assembly to become stuck after loading. Therefore, it is necessary to improve the production process of liquid reservoirs to address the above-mentioned problems in the prior art. Utility Model Content

[0004] To address the shortcomings of the existing technology, the present application provides a tube expansion device for use in the production of shock absorber reservoirs. This device utilizes a specific structure to expand the tube material and, after expansion, automatically separates the product from the forming rod without damaging the product during the separation process, thereby improving the product's yield rate. Furthermore, the present application also provides corresponding shock absorber reservoir expansion equipment.

[0005] For the pipe expansion device, the technical solution of this application is:

[0006] The pipe expanding device for producing shock absorber liquid storage cylinders includes a bottom plate; a base is provided on the bottom plate, and a forming rod is provided on the base, and the forming rod is used to expand and form the workpiece; a group of guide columns are provided on the bottom plate, and a top plate is provided on the other end of the guide columns; a driving device is provided on the top plate; a pressure plate is provided between the bottom plate and the top plate, and a guide hole is provided on the pressure plate, and the guide hole and the guide column form a sliding pair structure; the driving device can drive the pressure plate to move up and down; a pair of connecting rods are provided on the pressure plate, and the other end of the connecting rod is provided with a disengagement plate; a through hole is provided on the disengagement plate, and an annular disengagement tooling is provided on the through hole; after the pipe expansion of the workpiece is completed, the annular disengagement tooling can abut against the workpiece and drive the workpiece to disengage from the forming rod; a limit head is provided on the pressure plate, which is used to limit the workpiece during the pipe expansion process.

[0007] Compared with the prior art, the pipe expansion device for the production of shock absorber liquid storage cylinders of the present application presses the workpiece onto the forming rod by driving the pressure plate downward through a driving device, and gradually presses down to realize the pipe expansion operation; during the pipe expansion process, the limit head can limit the upper end of the workpiece to prevent the workpiece from tilting and avoid coaxial deviation of the workpiece; after the pipe expansion is completed, the workpiece that has been expanded and formed is driven away from the forming rod while the driving device drives the pressure plate to rise through the disengagement plate and the annular disengagement tooling, thereby realizing the automatic disengagement function after the workpiece is formed; and this upward lifting workpiece disengagement method will not cause the surface of the liquid storage cylinder to be stretched, thereby ensuring the quality of the product.

[0008] As an optimization, in the aforementioned expansion device for producing shock absorber reservoirs, the annular disengagement tool is provided with a groove. With this structure, after the expanded workpiece is separated from the forming rod, the groove can limit and fix the workpiece, preventing the workpiece from tilting and falling.

[0009] As an optimization, in the aforementioned tube expansion device for producing shock absorber reservoirs, the connecting rod comprises a fixed rod and a movable rod; one end of the movable rod extends into the fixed rod and forms a sliding pair with the inner wall of the fixed rod. This structure allows the movable rod and the fixed rod to slide relative to each other, increasing the travel of the connecting rod. This allows the device to expand tubes of various lengths and specifications, improving the device's practicality.

[0010] As an optimization, in the aforementioned tube expansion device for producing shock absorber reservoirs, the forming rod is detachably connected to the base, the annular release fixture is detachably connected to the release plate, and the stopper is detachably connected to the pressure plate. This structure allows the corresponding forming rod, annular release fixture, and stopper to be replaced, enabling the device to expand tubes of varying sizes and specifications, further enhancing the device's practicality.

[0011] As an optimization, in the aforementioned pipe expansion device for producing a shock absorber reservoir, the driving device is a hydraulic cylinder. Using a hydraulic cylinder as a driving device has the characteristics of high pressure, good stability and easy maintenance.

[0012] For the pipe expansion equipment, the technical solution of this application is:

[0013] The expansion device for a shock absorber liquid cylinder comprises a control box, a expansion device for producing a shock absorber liquid cylinder arranged on the control box, and an operation panel arranged on the side of the control box; the expansion device for producing a shock absorber liquid cylinder comprises a bottom plate; a base is provided on the bottom plate, and a forming rod is provided on the base, and the forming rod is used to expand and form the workpiece; a group of guide columns are provided on the bottom plate, and a top plate is provided on the other end of the guide columns; a driving device is provided on the top plate; a pressure plate is provided between the bottom plate and the top plate, and a guide hole is provided on the pressure plate, and the guide hole and the guide column form a sliding pair structure; the driving device can drive the pressure plate to move up and down; a pair of connecting rods are provided on the pressure plate, and the other end of the connecting rod is provided with a disengagement plate; a through hole is provided on the disengagement plate, and an annular disengagement tool is provided on the through hole; after the expansion of the workpiece is completed, the annular disengagement tool can abut against the workpiece and drive the workpiece to separate from the forming rod; a limit head is provided on the pressure plate, which is used to limit the workpiece during the expansion and forming process.

[0014] Compared with the prior art, the shock absorber liquid storage cylinder expansion equipment of the present application is provided with a tube expansion device for the production of shock absorber liquid storage cylinders, which presses the workpiece onto the forming rod by driving the pressure plate downward through a driving device, and gradually presses down to realize the tube expansion operation; during the tube expansion process, the limit head can limit the upper end of the workpiece to prevent the workpiece from tilting and avoid coaxial deviation of the workpiece; after the tube expansion is completed, the workpiece that has been expanded and formed is driven to separate from the forming rod while the driving device drives the pressure plate to rise, thereby realizing the automatic separation function of the workpiece after the forming is completed; and this upward lifting workpiece separation method will not cause the surface of the liquid storage cylinder to be stretched, thereby ensuring the quality of the product; and an operation panel is provided, which can more conveniently control the operation of the tube expansion device, which is convenient for the staff to operate.

[0015] As an optimization, in the aforementioned shock absorber reservoir tube expansion device, the annular disengagement tool is provided with a groove. With this structure, after the expanded workpiece is separated from the forming rod, the groove can limit and fix the workpiece to prevent the workpiece from tilting and falling.

[0016] As an optimization, in the aforementioned shock absorber reservoir tube expansion device, the connecting rod comprises a fixed rod and a movable rod; one end of the movable rod extends into the fixed rod and forms a sliding pair with the inner wall of the fixed rod. This structure allows the movable rod and the fixed rod to slide relative to each other, increasing the travel of the connecting rod. This, in turn, enables the device to expand tubes of various lengths and specifications, improving the device's practicality.

[0017] As an optimization, in the aforementioned shock absorber reservoir tube expansion device, the forming rod is detachably connected to the base, the annular release fixture is detachably connected to the release plate, and the stopper is detachably connected to the pressure plate. This structure allows the corresponding forming rod, annular release fixture, and stopper to be replaced, allowing the device to expand tubes of varying sizes and specifications, further improving the device's practicality.

[0018] As an optimization, in the aforementioned shock absorber reservoir tube expansion device, a foot switch is provided on the side of the control box and below the operating panel. This structure is provided with a foot switch, which controls the lowering of the pressure plate by stepping on it, freeing your hands to better place or pick up workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the shock absorber liquid storage tube expansion device of the present application;

[0020] Figure 2 yes Figure 1 Front view of

[0021] Figure 3 This is a schematic diagram of the structure of the tube expansion device used in the production of the shock absorber liquid storage cylinder of the present application;

[0022] Figure 4 yes Figure 3 Schematic diagram of the structure during operation;

[0023] Figure 5 yes Figure 3 Schematic diagram of the structure with workpieces installed;

[0024] Figure 6 yes Figure 3 Schematic diagram of the structure of the middle pressure plate;

[0025] Figure 7 yes Figure 3 Schematic diagram of the structure of the middle separation plate equipped with an annular separation tooling;

[0026] Figure 8 yes Figure 3 Schematic diagram of the structure of the connecting rod.

[0027] The markings in the accompanying drawings are: 1-base plate; 2-base; 3-forming rod; 4-workpiece; 5-guide column; 6-top plate; 7-driving device; 8-pressure plate, 801-guide hole; 9-connecting rod, 901-fixed rod, 902-movable rod; 10-disengagement plate; 11-annular disengagement tooling, 1101-groove; 12-limit head; 13-control box; 14-operation panel; 15-foot switch. DETAILED DESCRIPTION

[0028] The present application is further described below with reference to the accompanying drawings and examples, but is not intended to limit the present application. In the following examples, any content not described in detail or not shown in detail in the accompanying drawings is common knowledge in the art.

[0029] Example (see Figures 1 to 8 ):

[0030] The device for expanding the tube of a shock absorber liquid cylinder comprises a control box 13, a tube expanding device for producing a shock absorber liquid cylinder arranged on the control box 13, and an operation panel 14 arranged on the side of the control box; the tube expanding device for producing a shock absorber liquid cylinder comprises a bottom plate 1; a base 2 is provided on the bottom plate 1, a forming rod 3 is provided on the base 2, and the forming rod 3 is used to expand and form a workpiece 4; a group of guide columns 5 are provided on the bottom plate 1, and a top plate 6 is provided at the other end of the guide column 5; a driving device 7 is provided on the top plate 6; a pressure plate 8 is provided between the bottom plate 1 and the top plate 6, and a pressure plate 8 is provided on the pressure plate 8 There is a guide hole 801, and the guide hole 801 forms a sliding secondary structure with the guide column 5; the driving device 7 can drive the pressure plate 8 to move up and down; a pair of connecting rods 9 are provided on the pressure plate 8, and the other end of the connecting rod 9 is provided with a disengagement plate 10; a through hole is provided on the disengagement plate 10, and an annular disengagement tooling 11 is provided on the through hole; after the expansion of the workpiece 4 is completed, the annular disengagement tooling 11 can abut against the workpiece 4 and drive the workpiece 4 to disengage from the forming rod 3; a limit head 12 is provided on the pressure plate 8, which is used to limit the workpiece 4 during the expansion and forming process.

[0031] In this embodiment, the annular disengaging tool 11 is provided with a groove 1101. With this structure, after the expanded workpiece 4 is separated from the forming rod 3, the groove 1101 can limit and fix the workpiece 4 to prevent the workpiece 4 from tilting and falling.

[0032] In this embodiment, the connecting rod 9 includes a fixed rod 901 and a movable rod 902. One end of the movable rod 902 extends into the fixed rod 901 and forms a sliding joint with the inner wall of the fixed rod 901. This structure allows the movable rod 902 and the fixed rod 901 to slide relative to each other, increasing the travel of the connecting rod 9. This allows the device to expand pipes of various lengths and specifications, thereby improving the device's practicality.

[0033] In this embodiment, the forming rod 3 is detachably connected to the base 2, the annular detachment fixture 11 is detachably connected to the detachment plate 10, and the stopper 12 is detachably connected to the pressure plate 8. With this structure, the corresponding forming rod 3, annular detachment fixture 11, and stopper 12 can be replaced, allowing the device to expand pipes of different sizes and specifications, further improving the practicality of the device.

[0034] In this embodiment, a foot switch 15 is provided on the side of the control box 13 and below the operation panel 14. This structure is provided with a foot switch 15, which controls the descent of the pressure plate 8 by stepping on or stepping on the foot, freeing both hands and allowing the workpiece 4 to be placed or taken more easily.

[0035] In this embodiment, the driving device 7 is a hydraulic cylinder. Using a hydraulic cylinder as the driving device 7 has the characteristics of high pressure, good stability and easy maintenance.

[0036] The working process of the shock absorber liquid storage cylinder expansion device of this embodiment is as follows: place the workpiece 4 on the groove 1101 and hold it with your hands, step on the foot switch 15, and the pressure plate 8 moves downward under the drive of the driving device 7; when the workpiece 4 contacts the forming rod 3, the pressure plate 8 presses the workpiece 4, and the limit head 12 accurately limits the upper end of the workpiece 4, release your hand, and the expansion operation can be carried out as the pressure plate 8 gradually moves downward; after the expansion is completed, the pressure plate 8 automatically rises under the drive of the driving device 7, and drives the separation plate 10 to rise through the connecting rod 9. When the annular separation tooling 11 on the separation plate 10 contacts the workpiece 4, it will drive the workpiece 4 to rise together. As the separation plate 10 gradually rises, the workpiece 4 can be separated from the forming rod 3; after rising into place, the workpiece 4 stands in the groove 1101, waiting for the staff to remove it.

[0037] The above general description of the utility model and the description of its specific embodiments involved in this application should not be construed as limiting the technical solutions of the utility model. Based on the disclosure of this application, those skilled in the art may, without violating the constituent elements of the utility model involved, add to, subtract from, or combine the disclosed technical features in the above general description and / or specific embodiments (including examples) to form other technical solutions within the scope of protection of this application.

Claims

1. A tube expansion device for producing a shock absorber liquid storage cylinder, characterized by: The invention comprises a bottom plate (1); a base (2) is provided on the bottom plate (1); a forming rod (3) is provided on the base (2); the forming rod (3) is used for expanding and forming a workpiece (4); a group of guide columns (5) are provided on the bottom plate (1); a top plate (6) is provided at the other end of the guide columns (5); a driving device (7) is provided on the top plate (6); a pressure plate (8) is provided between the bottom plate (1) and the top plate (6); a guide hole (801) is provided on the pressure plate (8); the guide hole (801) and the guide column (5) form a sliding pair structure; the driving device The device (7) can drive the pressure plate (8) to move up and down; a pair of connecting rods (9) are provided on the pressure plate (8), and the other end of the connecting rod (9) is provided with a disengagement plate (10); a through hole is provided on the disengagement plate (10), and an annular disengagement tool (11) is provided on the through hole; after the expansion of the workpiece (4) is completed, the annular disengagement tool (11) can abut against the workpiece (4) and drive the workpiece (4) to disengage from the forming rod (3); a limiting head (12) is provided on the pressure plate (8) for limiting the workpiece (4) during the expansion forming process.

2. The tube expansion device for producing a shock absorber liquid storage cylinder according to claim 1, characterized in that: The annular disengagement tool (11) is provided with a groove (1101).

3. The tube expansion device for producing a shock absorber liquid storage cylinder according to claim 2, characterized in that: The connecting rod (9) comprises a fixed rod (901) and a movable rod (902); one end of the movable rod (902) extends into the fixed rod (901) and forms a sliding secondary structure with the inner wall of the fixed rod (901).

4. The tube expanding device for producing a shock absorber liquid storage cylinder according to claim 3, characterized in that: The forming rod (3) is detachably connected to the base (2), the annular detachment tool (11) is detachably connected to the detachment plate (10), and the limiting head (12) is detachably connected to the pressure plate (8).

5. The tube expanding device for producing a shock absorber liquid storage cylinder according to any one of claims 1 to 4, characterized in that: The driving device (7) is a hydraulic cylinder.

6. Shock absorber liquid storage tube expansion equipment, characterized by: The invention comprises a control box (13), a pipe expanding device for producing a shock absorber liquid storage cylinder arranged on the control box (13), and an operation panel (14) arranged on the side of the control box; the pipe expanding device for producing a shock absorber liquid storage cylinder comprises a bottom plate (1); a base (2) is provided on the bottom plate (1), a forming rod (3) is provided on the base (2), and the forming rod (3) is used to expand the pipe of a workpiece (4); a group of guide columns (5) are provided on the bottom plate (1), and a top plate (6) is provided at the other end of the guide column (5); a driving device (7) is provided on the top plate (6); a pressure plate (8) is provided between the bottom plate (1) and the top plate (6), and a guide hole ( 801), the guide hole (801) and the guide column (5) form a sliding pair structure; the driving device (7) can drive the pressure plate (8) to move up and down; a pair of connecting rods (9) are provided on the pressure plate (8), and the other end of the connecting rod (9) is provided with a disengagement plate (10); a through hole is provided on the disengagement plate (10), and an annular disengagement tool (11) is provided on the through hole; after the expansion of the workpiece (4) is completed, the annular disengagement tool (11) can abut against the workpiece (4) and drive the workpiece (4) to disengage from the forming rod (3); a limit head (12) is provided on the pressure plate (8) for limiting the workpiece (4) during the expansion process.

7. The shock absorber liquid storage tube expansion device according to claim 6, characterized in that: The annular disengagement tool (11) is provided with a groove (1101).

8. The shock absorber reservoir tube expansion device according to claim 7, characterized in that: The connecting rod (9) comprises a fixed rod (901) and a movable rod (902); one end of the movable rod (902) extends into the fixed rod (901) and forms a sliding secondary structure with the inner wall of the fixed rod (901).

9. The shock absorber liquid storage tube expansion device according to claim 8, characterized in that: The forming rod (3) is detachably connected to the base (2), the annular detachment tool (11) is detachably connected to the detachment plate (10), and the limiting head (12) is detachably connected to the pressure plate (8).

10. The device for expanding the liquid reservoir tube of a shock absorber according to any one of claims 6 to 9, characterized in that: A foot switch (15) is provided on the side of the control box (13) and below the operating panel (14).

Images