Steel ring assembling tool

Abstract

A steel ring assembling tool belongs to the technical field of processing tools. The utility model aims to provide a steel ring assembling tool capable of installing a steel ring with expansive force at the end part of a piston rod. A sleeve cover is installed at one end of a sleeve, an expansion head outlet is formed in the other end of the sleeve, a guide column penetrates through the sleeve cover and is fixedly installed with a punch, a reset spring is arranged between the sleeve cover and the punch and is sleeved on the guide column, and a narrow stand column is arranged at the upper end of an expansion head, is inserted into the punch and is installed on the punch through a limiting stop pin. And a steel ring space is reserved between the punch and the expansion head. The steel ring expansion device is simple to operate and convenient to use, and temporary expansion force is adopted when each steel ring is mounted, so that expansion force fatigue is hardly generated when the steel rings are mounted at the end part of the piston rod, the clamping force of the steel rings is ensured, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing tools. Background Art

[0002] The oil cylinder is a widely used component. The piston rod of the oil cylinder ( Figure 2 A) The end of the front end ( Figure 2 A steel ring ( Figure 2 In the figure (C), in order to clamp the piston rod end B, the steel ring C needs to have expansion force (elastic force), so that it can be tightly clamped on the piston rod end B. The existing installation method is to use a tool similar to pliers to pry the steel ring apart and then put it on the end of the piston rod. This method requires manual operation, and the force of prying the steel ring apart cannot be controlled. When the force is large, it is very likely that the retraction force of the steel ring cannot be fully returned to its original position. In this way, when clamping the piston rod end, it will be loose, thus failing to achieve the ideal effect. Summary of the invention

[0003] The utility model aims to provide a steel ring assembly tool which can be used to mount a steel ring with expansion force on the end of a piston rod.

[0004] A sleeve cover is installed at one end of the utility model sleeve, and the other end is an expansion head outlet. The guide column passes through the sleeve cover and is fixedly installed with the punch. A reset spring is arranged between the sleeve cover and the punch, and the reset spring is sleeved on the guide column. A narrow column is arranged at the upper end of the expansion head, the narrow column is inserted into the punch, and is installed on the punch through a limit stop pin, and a steel ring space is left between the punch and the expansion head.

[0005] The utility model is simple to operate and easy to use. A temporary expansion force is used when installing each steel ring. Therefore, the steel ring will hardly produce expansion force fatigue when installed to the end of the piston rod, thereby ensuring the supporting force of the steel ring and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the structure of the utility model, which is a schematic diagram of the working state (when the steel ring is installed, the spring is in a compressed state);

[0007] Figure 2 It is a schematic diagram of the state where the structure of the utility model is connected to the piston rod, and it is a schematic diagram of the pile body when the spring is completely restored after the steel ring is installed. DETAILED DESCRIPTION

[0008] A sleeve cover 3 is installed at one end of the utility model sleeve 4, and the other end is an expansion head outlet 9. The guide column 1 passes through the sleeve cover 3 and is fixedly installed with the punch 6. A reset spring 2 is arranged between the sleeve cover 3 and the punch 6, and the reset spring 2 is sleeved on the guide column 1. A narrow column 7 is arranged at the upper end of the expansion head 8, the narrow column 7 is inserted into the punch 6, and is installed on the punch 6 through a limit stop pin 5. A steel ring space 10 is left between the punch 6 and the expansion head 8.

[0009] The cover 3 is convenient for cooperating with the punch 6 to compress the spring. Through this structure, it can be ensured that when there is external force, the sleeve 4 compresses the spring with the cover 3 ( Figure 1 State), when the external force disappears, the spring pushes the sleeve 4 and the cover 3 to return to their original position ( Figure 2 state). The expansion head 8 is structured with two outer diameters. The side close to the punch 6 is a small outer diameter, which is slightly smaller than the inner diameter of the steel ring, and the side connected to the end of the piston rod is a large outer diameter, which is basically the same as the outer diameter of the end of the piston rod, and the large outer diameter of the expansion head 8 is basically matched with the inner diameter of the expansion head outlet 9 of the sleeve 4, that is, it is guaranteed that the expansion head outlet 9 can freely expand and contract outside the large outer diameter of the expansion head 8, but the steel ring installed at the large outer diameter of the expansion head 8 will be larger than the inner diameter of the expansion head outlet 9, which makes it convenient for the sleeve 4 to push the steel ring away from the expansion head 8. When the steel ring is sleeved on the expansion head 8, if no external force is applied, the steel ring will hang on the expansion head 8. The outer diameter of the narrow column 7 is slightly smaller than the notch distance of the steel ring. This design is convenient for the steel ring to be sleeved on the expansion head 8 through this part.

[0010] The operation process of the utility model is: first, the notch of the steel ring is sleeved on the corresponding narrow column 7, and then naturally placed (sleeved) on the expansion head 8, and then the end of the expansion head 8 is correspondingly pressed against the piston rod end B, and the sleeve 4 is held by hand and quickly pushed downward (under actual working conditions, the piston rod A is at the lower end of the utility model), and the outer edge of the bottom end of the sleeve 4 will push the steel ring on the expansion head 8 from the small diameter to the large diameter until it is pushed to the piston rod end B, and then the force applied to the sleeve 4 is released. Under the action of the spring, the steel ring remains on the piston rod, and the sleeve 4 returns to its initial state.

[0011] It is explained here that in order to limit the displacement distance of the sleeve 4 and the punch 6, a limit groove 11 is opened on the inner wall of the sleeve 4 in the utility model, and the limit stop pin 5 is extended at both ends and placed in the limit groove 11 while fixing the narrow column 7 and the punch 6. In this way, when the steel ring is pushed onto the end B of the piston rod, it is limited by the position and will not deviate from the installation.

[0012] The limit stop pin 5 has two functions (in the above description of the utility model): first, fixing the narrow column 7 and the punch 6, and second, limiting the displacement between the punch 6 and the sleeve 4. If the narrow column 7 is directly fixed on the punch 6, or directly processed into one piece, then the limit stop pin 5 has only one limiting function, which depends on the actual working conditions.

Claims

1. A steel ring assembly tool, characterized in that: A sleeve cover (3) is installed at one end of the sleeve (4), and an expansion head outlet (9) is provided at the other end. A guide column (1) passes through the sleeve cover (3) and is fixedly installed with the punch (6). A return spring (2) is provided between the sleeve cover (3) and the punch (6), and the return spring (2) is sleeved on the guide column (1). A narrow column (7) is provided at the upper end of the expansion head (8), the narrow column (7) is inserted into the punch (6), and is installed on the punch (6) through a limit stop pin (5). A steel ring space (10) is left between the punch (6) and the expansion head (8).

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