Piston rod and sealing ring assembling device

Abstract

The utility model relates to the technical field of mechanical assembly, and discloses a piston rod and sealing ring assembling device which comprises a workbench and a rectangular plate fixedly installed on the rear side of the top of the workbench, a containing frame is fixedly installed on the top of the rectangular plate, and a box body is fixedly installed on the front side of the top of the workbench. A cavity is formed in the position, close to the top, of the box body, a sealing ring can be opened through the multiple opening rods, the problems that in the prior art, workers need to open and assemble the sealing ring, and the operation is tedious and labor-consuming are solved, and the working efficiency is improved; a hydraulic cylinder, a circular plate, a regular trapezoidal block and an inverted trapezoidal block are arranged to drive the multiple opening rods to synchronously move outwards, power is provided for movement of the opening rods, assembling is convenient and fast, a hollow plate, a threaded rod and a material pushing circular plate are arranged to push a sealing ring upwards during assembling, the sealing ring is arranged on a piston rod in a sleeving mode, operation is convenient, and practicability is high. Batch assembly can be achieved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical assembly, in particular to an assembly device for a piston rod and a sealing ring. Background Art

[0002] In the prior art, the main structure of the cylinder includes a cylinder body, a piston rod located in the cylinder body and end covers for closing both ends of the cylinder body. The piston rod can reciprocate along the axial direction of the cylinder body. Before the piston rod and the cylinder body are assembled, a sealing ring needs to be assembled on the piston head of the piston rod.

[0003] Currently, most sealing rings are assembled manually. However, when installing the sealing ring into the sealing groove of the piston head manually, the staff needs to forcefully open the sealing ring and then install it into the sealing groove. When large quantities need to be assembled, it will not only increase the workload of the staff, but also lead to low efficiency of the sealing ring device, which is not conducive to the development of assembly work.

[0004] Therefore, we propose an assembly device for a piston rod and a sealing ring to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide an assembly device for a piston rod and a sealing ring to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assembly device for a piston rod and a sealing ring, comprising a workbench and a rectangular plate fixedly mounted on the rear side of the top of the workbench, a placing frame fixedly mounted on the top of the rectangular plate, and a box fixedly mounted on the front side of the top of the workbench, a cavity is opened on the box near the top, and a propping assembly is mounted in the inner cavity of the cavity, and a pushing assembly is mounted on the top of the box;

[0007] The expansion assembly includes a hydraulic cylinder fixedly installed in the middle of the bottom surface of the cavity and a circular plate fixedly installed at the output end of the hydraulic cylinder, and regular trapezoidal blocks are fixedly installed on the four sides of the top of the circular plate, and inverted trapezoidal blocks are respectively attached to the top of the regular trapezoidal blocks, and rectangular blocks are respectively fixedly installed on the top of the inverted trapezoidal blocks, and expansion rods are respectively fixedly installed on the top of the rectangular blocks, and movable openings are respectively opened on the four sides of the top of the cavity, and the upper ends of the expansion rods pass through adjacent movable openings and extend to the outside of the box.

[0008] Preferably, support legs are fixedly installed at the bottom of the workbench near the four corners;

[0009] A circular hole is provided in the middle of the placement rack near the front side.

[0010] Preferably, a fixing ring is fixedly sleeved on the output shaft of the spread rod near the top end.

[0011] Preferably, side panels are respectively provided on the outer sides of the inverted trapezoidal blocks, and the bottoms of the side panels are respectively fixedly mounted on the bottom surface of the inner cavity of the cavity, and the inverted trapezoidal blocks and the side panels are elastically connected via telescopic springs.

[0012] Preferably, the ejection assembly includes a hollow plate arranged above the top of the box body and flat plates fixedly installed on both sides of the hollow plate near the front side, threaded holes are respectively opened on the flat plates, and threaded rods are threadedly installed through the inner cavities of the threaded holes, the lower ends of the threaded rods are rotatably installed on the box body, and knobs are fixedly installed on the upper ends of the threaded rods, sliding blocks are slidably installed near the four corners of the top of the hollow plate, L-shaped sliding plates are fixedly installed on the top of the sliding blocks, and circular pushing plates are fixedly installed on the top of the L-shaped sliding plates, and the circular pushing plates are respectively sleeved on the support rods.

[0013] Preferably, limit plates are fixedly installed on both sides of the hollow plate near the rear side, and limit rods are slidably installed on the limit plates, and the lower ends of the limit rods are fixedly installed on the box body.

[0014] Preferably, a first single-groove wheel is fixedly sleeved on the output shaft end of the threaded rod on one side, and a second single-groove wheel is fixedly sleeved on the output end of the threaded rod on the other side, and a belt is commonly sleeved on the outer sides of the first single-groove wheel and the second single-groove wheel.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The sealing ring can be expanded by setting up multiple expansion rods, which solves the tedious and laborious traditional expansion assembly process that requires workers to do so, and improves work efficiency. The hydraulic cylinder, circular plate, positive trapezoidal block and inverted trapezoidal block can drive multiple expansion rods to move outward synchronously, providing power for the movement of the expansion rods, and facilitating assembly.

[0017] 2. Through the arrangement of the hollow plate, the threaded rod and the push circular plate, the sealing ring can be pushed upward during assembly so that it can be sleeved on the piston rod. The operation is convenient, batch assembly is possible, and the practicability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall three-dimensional diagram of the utility model;

[0019] Figure 2 It is a partial cross-sectional stereoscopic view of the utility model;

[0020] Figure 3 It is a partial structural stereogram of the box of the utility model;

[0021] Figure 4It is a three-dimensional diagram of the local structure of the hollow plate of the utility model;

[0022] Figure 5 It is a partial front bottom perspective view of the hollow slab of the utility model;

[0023] Figure 6 For the utility model Figure 3 Enlarged view of point A in the middle;

[0024] Figure 7 For the utility model Figure 4 Enlarged view of point B in the middle;

[0025] Figure 8 For the utility model Figure 4 Enlarged view of center C.

[0026] In the figure: 1. workbench; 11. supporting leg; 2. rectangular plate; 3. placement rack; 31. circular hole; 4. box; 5. expansion assembly; 51. hydraulic cylinder; 52. circular plate; 53. regular trapezoidal block; 54. inverted trapezoidal block; 541. side plate; 542. telescopic spring; 55. rectangular block; 56. expansion rod; 561. fixing ring; 6. ejection assembly; 61. hollow plate; 611. limit plate; 612. limit rod; 62. flat plate; 63. threaded rod; 631. belt; 64. knob; 65. sliding block; 66. L-shaped sliding plate; 67. circular plate for pushing materials. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1: Please refer to Figure 1-8 A piston rod and sealing ring assembly device comprises a workbench 1 and a rectangular plate 2 fixedly mounted at the rear side of the top of the workbench 1, a placing rack 3 is fixedly mounted on the top of the rectangular plate 2, and a box body 4 is fixedly mounted on the front side of the top of the workbench 1, a cavity is opened on the box body 4 near the top, and a spreading component 5 is installed in the inner cavity of the cavity, and a pushing component 6 is installed on the top of the box body 4, the sealing ring can be spread by the setting of the spreading component 5, and the setting of the pushing component 6 can push the sealing ring to achieve assembly.

[0029] The expansion assembly 5 includes a hydraulic cylinder 51 fixedly installed in the middle of the bottom surface of the cavity and a circular plate 52 fixedly installed at the output end of the hydraulic cylinder 51. The four sides of the top of the circular plate 52 are respectively fixedly installed with a regular trapezoidal block 53, the top of the regular trapezoidal block 53 is respectively affixed with an inverted trapezoidal block 54, the top of the inverted trapezoidal block 54 is respectively fixedly installed with a rectangular block 55, and the top of the rectangular block 55 is respectively fixedly installed with an expansion rod 56, and the four sides of the top of the cavity are respectively opened. The upper ends of the expansion rods 56 pass through the adjacent moving openings and extend to the outside of the box body 4. The sealing ring can be expanded by the setting of the expansion rods 56.

[0030] Support legs 11 are fixedly installed at the bottom of the workbench 1 near the four corners, respectively, to support the workbench 1 .

[0031] A circular hole 31 is provided in the middle of the placement rack 3 near the front side to facilitate the placement of the piston rod.

[0032] A fixing ring 561 is fixedly sleeved on the output shaft of the expansion rod 56 near the top end to play a role of limiting.

[0033] Side panels 541 are respectively provided on the outer sides of the inverted trapezoidal blocks 54, and the bottoms of the side panels 541 are respectively fixedly mounted on the bottom surface of the inner cavity of the cavity. The inverted trapezoidal blocks 54 and the side panels 541 are elastically connected by telescopic springs 542, and the setting of the telescopic springs 542 can facilitate the movement and restoration of the inverted trapezoidal blocks 54.

[0034] In this embodiment: when in use, the sealing ring is first placed on the outside of the expansion rod 56. After the placement is completed, the hydraulic cylinder 51 can be used to drive the circular plate 52 to move upward. When the circular plate 52 moves upward, it will drive the positive trapezoidal block 53 to move upward. When the positive trapezoidal block 53 moves upward, it will squeeze the inverted trapezoidal block 54 to move outward and squeeze the telescopic spring 542. When the inverted trapezoidal block 54 moves outward, it will drive the expansion rod 56 to move outward, thereby expanding the sealing ring. At this time, the piston rod is passed through the circular hole 31 and is located in the sealing ring.

[0035] Embodiment 2: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-2 and Figure 5-8The ejection assembly 6 includes a hollow plate 61 arranged above the top of the box body 4 and a flat plate 62 fixedly installed on both sides of the hollow plate 61 near the front side. Threaded holes are respectively opened on the flat plates 62, and threaded rods 63 are respectively threadedly installed in the inner cavities of the threaded holes. The lower ends of the threaded rods 63 are respectively rotatably installed on the box body 4, and knobs 64 are respectively fixedly installed on the upper ends of the threaded rods 63. Sliding blocks 65 are respectively slidably installed near the four corners of the top of the hollow plate 61, and L-shaped sliding plates 66 are respectively fixedly installed on the top of the sliding blocks 65. Pushing circular plates 67 are respectively fixedly installed on the top of the L-shaped sliding plates 66, and the pushing circular plates 67 are respectively sleeved on the expansion rod 56. The expansion circular plates 67 can be set to push the expanded sealing ring upward, so that it is convenient to assemble it on the piston rod.

[0036] Limiting plates 611 are fixedly installed on both sides of the hollow plate 61 near the rear side, and limiting rods 612 are slidably installed on the limiting plates 611. The lower ends of the limiting rods 612 are fixedly installed on the box body 4 to guide and limit the hollow plate 61.

[0037] A first single groove wheel is fixedly sleeved on the output shaft end of the threaded rod 63 on one side, and a second single groove wheel is fixedly sleeved on the output shaft end of the threaded rod 63 on the other side. The first single groove wheel and the second single groove wheel are different in size. A belt 631 is commonly sleeved on the outer sides of the first single groove wheel and the second single groove wheel. The transmission of the belt 631 facilitates the synchronous rotation of the threaded rods 63 on both sides.

[0038] In this embodiment: when the expansion rod 56 moves outward, it will also drive the pusher circular plate 67 to move outward. When the pusher circular plate 67 moves outward, it will drive the sliding block 65 to slide on the hollow plate 61 through the L-shaped sliding plate 66. When the piston rod part is located in the appropriate position in the sealing ring, the knob 64 can be rotated to drive the threaded rod 63 to rotate, and the transmission of the belt 631 can drive the threaded rods 63 on both sides to rotate synchronously. When the threaded rod 63 rotates, it will drive the hollow plate 61 to move upward through the threaded holes. When the hollow plate 61 moves upward, it will drive the pusher circular plate 67 to move upward through the sliding block 65 and the L-shaped sliding plate 66. At this time, the sealing ring can be pushed upward, and when the sealing ring is away from the outer side of the expansion rod 56, it will shrink. At this time, it will be mounted on the appropriate position on the piston rod to complete the assembly.

[0039] Working principle: When in use, first place the sealing ring on the outside of the expansion rod 56. After placement, the hydraulic cylinder 51 can be used to drive the circular plate 52 to move upward. When the circular plate 52 moves upward, it will drive the positive trapezoidal block 53 to move upward. When the positive trapezoidal block 53 moves upward, it will squeeze the inverted trapezoidal block 54 to move outward and squeeze the telescopic spring 542. When the inverted trapezoidal block 54 moves outward, it will drive the expansion rod 56 to move outward. When the expansion rod 56 moves outward, it will also drive the push circular plate 67 to move outward. When the push circular plate 67 moves outward, it will drive the sliding block 65 to slide on the hollow plate 61 through the L-shaped sliding plate 66, and the expansion rod 56 will also move outward. The sealing ring is expanded, and the piston rod is passed through the circular hole 31 and located in the sealing ring. When the piston rod part is located in the appropriate position in the sealing ring, the knob 64 can be turned to drive the threaded rod 63 to rotate, and the transmission of the belt 631 can drive the threaded rods 63 on both sides to rotate synchronously. When the threaded rod 63 rotates, it will drive the hollow plate 61 to move upward through the threaded holes. When the hollow plate 61 moves upward, it will drive the pushing circular plate 67 to move upward through the sliding block 65 and the L-shaped sliding plate 66. At this time, the sealing ring can be pushed upward, and when the sealing ring is away from the outside of the expansion rod 56, it will shrink. At this time, it will be sleeved on the appropriate position on the piston rod to complete the assembly.

[0040] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An assembly device for a piston rod and a sealing ring, comprising a workbench (1) and a rectangular plate (2) fixedly mounted on the top rear side of the workbench (1), characterized in that: A placement rack (3) is fixedly installed on the top of the rectangular plate (2), and a box (4) is fixedly installed on the front side of the top of the workbench (1), a cavity is opened on the box (4) near the top, and a propping assembly (5) is installed in the inner cavity of the cavity, and a pushing assembly (6) is installed on the top of the box (4); The expansion assembly (5) comprises a hydraulic cylinder (51) fixedly mounted in the middle of the bottom surface of the inner cavity of the cavity and a circular plate (52) fixedly mounted at the output end of the hydraulic cylinder (51); a regular trapezoidal block (53) is fixedly mounted on four sides of the top of the circular plate (52); an inverted trapezoidal block (54) is attached to the top of the regular trapezoidal block (53); a rectangular block (55) is fixedly mounted on the top of the inverted trapezoidal block (54); and an expansion rod (56) is fixedly mounted on the top of the rectangular block (55); movable openings are respectively opened on four sides of the top of the inner cavity of the cavity; and the upper ends of the expansion rods (56) pass through adjacent movable openings and extend to the outside of the box body (4).

2. The assembly device of a piston rod and a sealing ring according to claim 1, characterized in that: Support legs (11) are fixedly installed at the bottom of the workbench (1) near the four corners; A circular hole (31) is provided in the middle of the placement rack (3) near the front side.

3. The assembly device of a piston rod and a sealing ring according to claim 1, characterized in that: A fixing ring (561) is fixedly sleeved on the output shaft of the spreading rod (56) near the top end.

4. The assembly device of a piston rod and a sealing ring according to claim 1, characterized in that: Side plates (541) are respectively arranged on the outer sides of the inverted trapezoidal blocks (54), and the bottoms of the side plates (541) are respectively fixedly mounted on the bottom surface of the inner cavity of the cavity, and the inverted trapezoidal blocks (54) and the side plates (541) are elastically connected via telescopic springs (542).

5. The assembly device of a piston rod and a sealing ring according to claim 1, characterized in that: The ejection assembly (6) comprises a hollow plate (61) arranged above the top of the box body (4) and a flat plate (62) fixedly mounted on both sides of the hollow plate (61) near the front side, threaded holes are respectively opened on the flat plates (62), and threaded rods (63) are respectively threadedly penetrated and mounted in the inner cavities of the threaded holes, the lower ends of the threaded rods (63) are respectively rotatably mounted on the box body (4), and the upper ends of the threaded rods (63) are respectively fixedly mounted with knobs (64), sliding blocks (65) are respectively slidably mounted near the four corners of the top of the hollow plate (61), and L-shaped sliding plates (66) are respectively fixedly mounted on the top of the sliding blocks (65), and push circular plates (67) are respectively fixedly mounted on the top of the L-shaped sliding plates (66), and the push circular plates (67) are respectively sleeved on the opening rods (56).

6. The assembly device of a piston rod and a sealing ring according to claim 5, characterized in that: Limiting plates (611) are fixedly installed on both sides of the hollow plate (61) near the rear side, and limiting rods (612) are slidably installed on the limiting plates (611), and the lower ends of the limiting rods (612) are fixedly installed on the box body (4).

7. The assembly device of a piston rod and a sealing ring according to claim 5, characterized in that: A first single groove wheel is fixedly sleeved at the output shaft end of the threaded rod (63) on one side, and a second single groove wheel is fixedly sleeved at the output end of the threaded rod (63) on the other side. A belt (631) is sleeved on the outer sides of the first single groove wheel and the second single groove wheel.

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