Tool for assembling piston assembly into air cylinder barrel

Abstract

The utility model discloses a tool for assembling a piston assembly into an air cylinder barrel. The tool comprises a cylinder barrel positioning mechanism; the pressure applying mechanism is mounted at the rear end of the cylinder barrel positioning mechanism; the piston rod limiting mechanism is installed at the front end of the cylinder barrel positioning mechanism and comprises a guide column, a guide sleeve, a first screw knob, a second screw knob, a transverse rod and a piston rod sleeve. The cylinder barrel is positioned through the cylinder barrel positioning mechanism, then a piston of the piston assembly faces an opening in the upper end of the cylinder barrel, a piston rod of the piston assembly is straightened, then the piston rod sleeve is horizontally moved to be coaxial with the piston rod in an up-down corresponding mode, and then the piston rod sleeve is moved downwards, so that the piston rod is inserted into the piston rod sleeve; the inner diameter of the piston rod sleeve is matched with the diameter of the piston rod, so that the piston rod can be horizontally limited, then the piston rod is pressed downwards through the pressure applying mechanism, the piston assembly can be installed in the cylinder barrel, a worker does not need to hold the piston rod all the time, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of piston assembly tooling, in particular to a tooling for assembling a piston component into a cylinder barrel. Background Art

[0002] The piston assembly generally includes the piston, piston ring, connecting rod, connecting rod bearing, connecting rod bolt and other parts. Since the outer diameter of the piston ring is larger than the inner hole of the cylinder barrel when in a free state and has a greater elastic force, and the upper part of the cylinder barrel has only a small chamfer, it is a relatively difficult task to install the piston assembly into the cylinder barrel. For this purpose, a tooling for assembling the piston assembly into the cylinder barrel is required. When using the tooling for assembling the piston assembly into the cylinder barrel, it is necessary to hold the piston rod straight at all times to avoid the piston rod tilting, which affects the assembly of the piston assembly into the cylinder barrel, which is more troublesome. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a tool for assembling a piston assembly into a cylinder barrel to solve the problems existing in the above-mentioned background technology.

[0004] The tooling for assembling the piston assembly into the cylinder barrel includes:

[0005] Cylinder positioning mechanism;

[0006] A pressure-applying mechanism, the pressure-applying mechanism being installed at the rear end of the cylinder positioning mechanism;

[0007] A piston rod limiting mechanism, wherein the piston rod limiting mechanism is installed at the front end of the cylinder positioning mechanism, the piston rod limiting mechanism comprises a guide column, a guide sleeve, a screw button 1, a screw button 2, a cross bar and a piston rod sleeve, the guide column is fixed to the cylinder positioning mechanism, the guide sleeve is movably sleeved on the outside of the guide column, a convex strip is provided on the surface of the guide column, the convex strip is slidably connected to the guide sleeve, the screw button 1 is threadedly connected to the right end of the guide sleeve, the left end of the screw button 1 abuts against the guide column, the cross bar movably passes through the left inner part of the guide sleeve, the screw button 2 is threadedly connected to the left end of the guide sleeve, the right end of the screw button 2 abuts against the cross bar, and the piston rod sleeve is installed at the rear end of the cross bar.

[0008] Furthermore, the cylinder positioning mechanism includes a positioning platform, a horizontal slider, a bidirectional threaded rod, a knob, and a positioning plate. A horizontal slide is opened at the upper end of the positioning platform. The horizontal slider has a pair and is slidably connected to the left and right sides of the horizontal slide respectively. The bidirectional threaded rod is rotatably connected to the horizontal slide. The bidirectional threaded rod passes through the horizontal slider and is threadedly connected to the horizontal slider. The left end of the bidirectional threaded rod passes through the positioning platform and is fixed to the knob. The positioning plates have a pair and are fixed one-to-one to the upper end of the horizontal slider.

[0009] Further, the pressing mechanism includes a column, a vertical slider, a pressing plate and a hydraulic cylinder. The column is fixed to the rear end of the positioning table. A vertical slideway is formed at the front end of the column. The vertical slider is slidably connected inside the vertical slideway. The pressing plate is fixed to the front end of the vertical slider. The hydraulic cylinder is fixedly installed at the upper end of the column. The piston rod of the hydraulic cylinder penetrates into the vertical slideway and is connected to the vertical slider.

[0010] Further, the guide post is fixedly connected to the front end of the positioning table, and the cross bar is horizontally arranged above the positioning table.

[0011] Further, sliding chambers are provided on both the left and right sides inside the guide sleeve. The guide post and the convex strip are located in the sliding chamber on the right side. A first groove is provided at the right end of the inner wall of the sliding chamber on the right side. The left end of the first screw button penetrates into the first groove and is fixed with a first pressing block. The first pressing block abuts against the guide post.

[0012] Further, the cross bar is located in the sliding chamber on the left side. A second groove is formed at the left end of the inner wall of the sliding chamber on the left side. The right end of the second screw button penetrates into the second groove and is fixed with a second pressing block. The second pressing block abuts against the cross bar.

[0013] Further, a slot is formed at the rear end of the cross bar, and a plug block is provided at the front end of the piston rod sleeve. The plug block is inserted into the slot and is connected to the slot by bolts.

[0014] Beneficial effects: The cylinder barrel is positioned by the cylinder barrel positioning mechanism. Then, the piston of the piston assembly is aligned with the upper opening of the cylinder barrel, and the piston rod of the piston assembly is straightened. Then, the piston rod sleeve is horizontally moved to be coaxially aligned with the piston rod vertically. After that, the piston rod sleeve is moved downward, so that the piston rod is inserted into the piston rod sleeve. The inner diameter of the piston rod sleeve matches the diameter of the piston rod, so that the piston rod can be horizontally limited. Then, the piston rod is pressed down by the pressing mechanism, and the piston assembly can be installed into the cylinder barrel, thus eliminating the need for the staff to always hold the piston rod by hand, and the operation is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the whole of the present invention;

[0016] Figure 2 is a schematic diagram of the piston rod limiting mechanism of the present invention;

[0017] Figure 3 is a schematic top view sectional view of the guide sleeve of the present invention.

[0018] In the figure: 1 - cylinder positioning mechanism, 11 - positioning table, 12 - horizontal slideway, 13 - horizontal slider, 14 - bidirectional threaded rod, 15 - knob, 16 - positioning plate, 2 - pressing mechanism, 21 - column, 22 - vertical slideway, 23 - vertical slider, 24 - pressing plate, 25 - hydraulic cylinder, 3 - piston rod limiting mechanism, 31 - guide post, 32 - rib, 33 - guide sleeve, 34 - screw knob 1, 35 - screw knob 2, 36 - cross bar, 37 - piston rod sleeve, 38 - extrusion block 1, 39 - extrusion block 2. Specific implementation manner

[0019] Please refer to Figures 1 - 3 , a tooling for assembling a piston assembly into a cylinder barrel of a cylinder, comprising:

[0020] The cylinder barrel positioning mechanism 1, the cylinder barrel positioning mechanism 1 includes a positioning table 11, a horizontal slider 13, a bidirectional threaded rod 14, a knob 15, and a positioning plate 16. A horizontal slideway 12 is opened at the upper end of the positioning table 11. There are a pair of horizontal sliders 13 which are respectively slidably connected to the left and right sides inside the horizontal slideway 12. The bidirectional threaded rod 14 is rotatably connected inside the horizontal slideway 12. The bidirectional threaded rod 14 penetrates through the horizontal slider 13 and is threadedly connected to the horizontal slider 13. The left end of the bidirectional threaded rod 14 penetrates through the positioning table 11 and is fixed to the knob 15. There are a pair of positioning plates 16 which are correspondingly fixed to the upper ends of the horizontal sliders 13. Place the cylinder barrel between the positioning plates 16 on the positioning table 11, and then rotate the knob 15. The knob 15 drives the bidirectional threaded rod 14 to rotate. As the bidirectional threaded rod 14 is in threaded cooperation with the two horizontal sliders 13, the distance between the horizontal sliders 13 is reduced between the horizontal slideways 12. In this way, the horizontal sliders 13 will drive the positioning plates 16 to clamp and position the cylinder barrel;

[0021] The pressing mechanism 2, the pressing mechanism 2 is installed at the rear end of the cylinder barrel positioning mechanism 1. The pressing mechanism 2 includes a column 21, a vertical slider 23, a pressing plate 24, and a hydraulic cylinder 25. The column 21 is fixed to the rear end of the positioning table 11. A vertical slideway 22 is opened at the front end of the column 21. The vertical slider 23 is slidably connected inside the vertical slideway 22. The pressing plate 24 is fixed to the front end of the vertical slider 23. The hydraulic cylinder 25 is fixedly installed at the upper end of the column 21. The piston rod of the hydraulic cylinder 25 penetrates into the vertical slideway 22 and is connected to the vertical slider 23. After the cylinder barrel is clamped and positioned, make the piston assembly face the upper opening of the cylinder barrel, and then drive the vertical slider 23 to move down along the vertical slideway 22 through the hydraulic cylinder 25. The vertical slider 23 drives the pressing plate 24 to press down the piston assembly, so as to assemble the piston assembly into the cylinder barrel of the cylinder;

[0022] The piston rod limiting mechanism 3 is installed at the front end of the cylinder barrel positioning mechanism 1. The piston rod limiting mechanism 3 includes a guide post 31, a guide sleeve 33, a first screw button 34, a second screw button 35, a cross bar 36 and a piston rod sleeve 37. The guide post 31 is fixed to the cylinder barrel positioning mechanism 1 and is fixedly connected to the front end of the positioning table 11. The guide sleeve 33 is movably sleeved outside the guide post 31. The surface of the guide post 31 is provided with a convex strip 32, and the convex strip 32 is slidably connected to the guide sleeve 33. The first screw button 34 is threadedly connected to the right end of the guide sleeve 33, and the left end of the first screw button 34 abuts against the guide post 31. The cross bar 36 movably penetrates through the left inner part of the guide sleeve 33, and the cross bar 36 is horizontally arranged above the middle of the positioning table 11. The second screw button 35 is threadedly connected to the left end of the guide sleeve 33, and the right end of the second screw button 35 abuts against the cross bar 36. The piston rod sleeve 37 is installed at the rear end of the cross bar 36. By sliding the guide sleeve 33 up and down, the position of the guide sleeve 33 can be adjusted up and down along the guide post 31, so that the position of the piston rod sleeve 37 can be driven to be adjusted up and down. Then, by rotating and tightening the first screw button 34, the first screw button 34 can lock and limit the guide sleeve 33. Then, by pulling the cross bar 36 back and forth, the cross bar 36 slides back and forth along the guide sleeve 33, thereby driving the piston rod sleeve 37 to be horizontally adjusted in position. After adjusting the position, by rotating and tightening the second screw button 35, the second screw button 35 can lock the cross bar 36, so that the piston rod sleeve 37 can be horizontally moved to be coaxially corresponding to the piston rod up and down. Then, the piston rod sleeve 37 is moved downwards, so that the piston rod is inserted into the piston rod sleeve 37. The inner diameter of the piston rod sleeve 37 matches the diameter of the piston rod, so that the piston rod can be horizontally limited. Then, by pressing the piston rod through the pressing mechanism 2, the piston assembly can be loaded into the cylinder barrel, so that it is not necessary for the staff to always hold the piston rod by hand, and the operation is relatively convenient.

[0023] Both the left and right sides inside the guide sleeve 33 are provided with sliding cavities. The guide post 31 and the convex strip 32 are located in the sliding cavity on the right side. A first groove is provided at the right end of the inner wall of the sliding cavity on the right side. The left end of the first screw button 34 penetrates into the first groove and is fixed with a first pressing block 38. The first pressing block 38 abuts against the guide post 31. When the first screw button 34 is rotated clockwise, the first screw button 34 will turn into the first groove, and at the same time, the first screw button 34 drives the first pressing block 38 to abut against the guide post 31, so as to lock the guide sleeve 33.

[0024] The cross bar 36 is located in the sliding cavity on the left side. A second groove is opened at the left end of the inner wall of the sliding cavity on the left side. The right end of the second screw button 35 penetrates into the second groove and is fixed with a second pressing block 39. The second pressing block 39 abuts against the cross bar 36. When the second screw button 35 is rotated clockwise, the second screw button 35 will turn into the second groove, and at the same time, the second screw button 35 drives the second pressing block 39 to abut against the cross bar 36, so as to lock the cross bar 36.

[0025] A slot is provided at the rear end of the cross bar 36, and a plug is provided at the front end of the piston rod sleeve 37. The plug is inserted into the slot and connected to the slot by bolts. The piston rod sleeve 37 has models with various inner diameter specifications, so that piston rod sleeves 37 with corresponding inner diameters can be selected according to piston rods of different diameters. Then, the plug of the piston rod sleeve 37 is inserted into the slot at the rear end of the cross bar 36 and locked with bolts, which improves the practicability.

[0026] Working principle: First, place the cylinder barrel between the positioning plates 16 on the positioning table 11, and then rotate the knob 15 clockwise. The knob 15 drives the bidirectional threaded rod 14 to rotate clockwise. As the bidirectional threaded rod 14 is in threaded engagement with the two horizontal sliders 13, the horizontal sliders 13 are pulled closer to each other between the horizontal slideways 12. In this way, the horizontal sliders 13 drive the positioning plates 16 to clamp and position the cylinder barrel. Then, align the piston of the piston assembly with the upper opening of the cylinder barrel, and straighten the piston rod of the piston assembly. Then, horizontally move the piston rod sleeve 37 back and forth until it is coaxially aligned with the piston rod vertically, and then lock the cross bar 36. After that, lower the piston rod sleeve 37. After the piston rod is inserted into the piston rod sleeve 37, lock the guide sleeve 33. Then, drive the vertical slider 23 to move down along the vertical slideway 22 by the hydraulic cylinder 25. The vertical slider 23 drives the pressing plate 24 to press down the piston assembly, so as to assemble the piston assembly into the cylinder barrel and complete the assembly work.

Claims

1. A tool for assembling a piston assembly into a cylinder barrel, characterized in that: include: Cylinder positioning mechanism (1); A pressure-applying mechanism (2), wherein the pressure-applying mechanism (2) is mounted at the rear end of the cylinder positioning mechanism (1); A piston rod limiting mechanism (3) is installed at the front end of a cylinder positioning mechanism (1). The piston rod limiting mechanism (3) comprises a guide column (31), a guide sleeve (33), a screw button (34), a screw button (35), a cross bar (36) and a piston rod sleeve (37). The guide column (31) is fixed to the cylinder positioning mechanism (1). The guide sleeve (33) is movably sleeved on the outside of the guide column (31). The surface of the guide column (31) is provided with a convex strip ( The convex strip (32) is slidably connected to the guide sleeve (33), the screw button (34) is threadedly connected to the right end of the guide sleeve (33), the left end of the screw button (34) is against the guide column (31), the cross bar (36) is movably passed through the left inner part of the guide sleeve (33), the screw button (35) is threadedly connected to the left end of the guide sleeve (33), the right end of the screw button (35) is against the cross bar (36), and the piston rod sleeve (37) is installed at the rear end of the cross bar (36).

2. The tooling for assembling the piston assembly into the cylinder barrel according to claim 1, characterized in that: The cylinder positioning mechanism (1) comprises a positioning platform (11), a horizontal slider (13), a bidirectional threaded rod (14), a knob (15), and a positioning plate (16); a horizontal slideway (12) is provided at the upper end of the positioning platform (11); a pair of the horizontal sliders (13) are slidably connected to the left and right sides of the horizontal slideway (12), respectively; the bidirectional threaded rod (14) is rotatably connected to the inside of the horizontal slideway (12); the bidirectional threaded rod (14) passes through the horizontal slider (13) and is threadedly connected to the horizontal slider (13); the left end of the bidirectional threaded rod (14) passes through the positioning platform (11) and is fixed to the knob (15); a pair of the positioning plates (16) are fixed to the upper end of the horizontal slider (13) in a one-to-one correspondence.

3. The tooling for assembling the piston assembly into the cylinder barrel according to claim 2, characterized in that: The pressure mechanism (2) comprises a column (21), a vertical slider (23), a pressure plate (24) and a hydraulic cylinder (25); the column (21) is fixed at the rear end of the positioning platform (11); a vertical slideway (22) is provided at the front end of the column (21); the vertical slider (23) is slidably connected inside the vertical slideway (22); the pressure plate (24) is fixed at the front end of the vertical slider (23); the hydraulic cylinder (25) is fixedly installed at the upper end of the column (21); a piston rod of the hydraulic cylinder (25) penetrates into the vertical slideway (22) and is connected to the vertical slider (23).

4. The tooling for assembling the piston assembly into the cylinder barrel according to claim 2, characterized in that: The guide column (31) is fixedly connected to the front end of the positioning platform (11), and the cross bar (36) is horizontally arranged above the positioning platform (11).

5. The tooling for assembling the piston assembly into the cylinder barrel according to claim 1, characterized in that: The guide sleeve (33) is provided with sliding cavities on both the left and right sides. The guide column (31) and the convex strip (32) are located in the sliding cavity on the right side. A groove is provided at the right end of the inner wall of the sliding cavity on the right side. The left end of the screw button (34) passes through the groove and is fixed with an extrusion block (38). The extrusion block (38) abuts against the guide column (31).

6. The tooling for assembling the piston assembly into the cylinder barrel according to claim 5, characterized in that: The cross bar (36) is located in the sliding cavity on the left side. A groove 2 is formed at the left end of the inner wall of the sliding cavity on the left side. The right end of the second screw button (35) passes through the inside of the groove 2 and is fixed with a second extrusion block (39). The second extrusion block (39) abuts against the cross bar (36).

7. The tooling for assembling the piston assembly into the cylinder barrel according to claim 1, characterized in that: The rear end of the cross bar (36) is provided with a slot, and the front end of the piston rod sleeve (37) is provided with an insert block, which is inserted into the slot and connected to the slot by bolts.

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