Tappet check ring assembling clamp

Abstract

The utility model provides a tappet check ring assembling clamp, which belongs to the field of mechanical manufacturing, comprises a redesigned appearance structure, and consists of a base, a cylinder seat, a corner cylinder, a pressing plate, a ball screw, a locking nut, a check ring, a tappet, a clamp body, a pneumatic valve switch and a gasket. The retainer ring assembling device is convenient and fast to operate, high in assembling efficiency, good in stability, capable of meeting retainer ring assembling requirements of various tappets and high in universality, and manual operation is replaced by the air cylinder.

Description

Technical Field

[0001] This utility model relates to a tappet retainer assembly fixture, belonging to the field of process assembly technology in mechanical manufacturing. Background Technology

[0002] With the continuous development of automotive parts, the market demand is large and competition is fierce. Improvements in assembly processes are needed to increase efficiency, reduce manufacturing costs, and enhance product market potential. Currently, the assembly of tappets and retaining rings relies on manual operation using a hand-operated press to compress the spring handle inside the tappet, revealing the mounting groove before installing the retaining ring. Throughout the assembly process, personnel must continuously apply downward pressure to ensure smooth assembly. Prolonged operation leads to fatigue, reducing efficiency and hindering the needs of mass production. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing assembly methods by providing a fixture design that is reasonable, easy to operate, and highly efficient, in order to meet the needs of mass production.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a tappet and retaining ring assembly fixture, comprising a base (1), a cylinder seat (2), a corner cylinder (3), a pressure plate (4), a ball head screw (5), a locking nut (6), a retaining ring (7), a tappet (8), a fixture body (9), a pneumatic valve switch (10), and a gasket (11). The base supports the entire assembly, the cylinder seat is mounted on the base, the corner cylinder is mounted on the cylinder seat, one end of the pressure plate is mounted on the corner post of the corner cylinder, the ball head screw is mounted on the other end of the pressure plate and fixed with a locking nut, the fixture body is mounted on the base, and the center of the through hole of the fixture body is concentric with the center of the ball head screw. The gasket is placed horizontally in the through hole of the fixture body, the tappet is inserted, and the retaining ring can be assembled by opening the pneumatic valve switch.

[0005] As a preferred option in this solution: the clamp body is designed with a through hole, the diameter of which is 0.05-0.1mm larger than the outer diameter of the tappet. The purpose of this is to ensure a reasonable clearance and facilitate the insertion and removal of parts. The through hole is used to place shims and tappets for limiting their position during operation. The through hole can accommodate the assembly requirements of various tappet retaining rings.

[0006] As the preferred option in this solution, the corner cylinder is a 90-degree corner cylinder. Its working principle is that when the cylinder is ventilated, it first rotates 90 degrees and then moves vertically downward. After the pneumatic valve is closed, the cylinder will rotate again and reset, avoiding the through hole of the clamping body, so that there is no interference when inserting parts, and the operation is smoother and more efficient.

[0007] As a preferred option in this solution: the ball head screw has a thread on one end, and the extension length can be adjusted to meet different needs.

[0008] As a preferred option in this solution: the gasket plane replaces the base plane, preventing the push rod from contacting the base surface during operation; the gasket surface undergoes high-hardness heat treatment, making it highly hard and wear-resistant, and if wear occurs on the contact surface, only the gasket needs to be replaced.

[0009] The beneficial effects of this utility model are: 1. It is easy to operate and highly versatile, and can meet the assembly requirements of various tappet retaining rings; 2. It uses simple pneumatic mechanical energy to replace manual operation, which reduces the labor intensity of the operator, and is highly efficient and stable. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 Schematic diagram showing the free height of the spring before the retaining ring is installed on the tappet; Figure 3 This is a schematic diagram of the retaining ring used in this utility model.

[0011] In the diagram: 1-base, 2-cylinder seat, 3-corner cylinder, 4-pressure plate, 5-ball head screw, 6-locking nut, 7-retaining ring, 8-tappost, 9-clamp body, 10-pneumatic valve switch, 11-gasket. Detailed Implementation

[0012] To clearly illustrate the technical features of this solution, a specific implementation method is described below, along with its accompanying drawings.

[0013] As shown in the attached figure, a tappet retaining ring assembly fixture includes a base (1), a cylinder seat (2), a rotary cylinder (3), a pressure plate (4), a ball head screw (5), a lock nut (6), a retaining ring (7), a tappet (8), a fixture body (9), a pneumatic valve switch (10), and a gasket (11). The base (1) supports the entire assembly. The cylinder seat (2) is mounted on the base (1), the rotary cylinder (3) is mounted on the cylinder seat (2), and one end of the pressure plate (4) is mounted on the cylinder seat (2). The ball head screw (5) is mounted on the corner column of the corner cylinder (3) and fixed with the lock nut (6) on the other end of the pressure plate (4), perpendicular to the horizontal plane of the base (1). The clamp body (9) is installed on the base (1), and the center of the through hole of the clamp body (9) is concentric with the center of the ball head screw (5). The gasket (11) is placed horizontally in the through hole of the clamp body (9), the tappet (8) is inserted, and the pneumatic valve switch (10) is turned on to assemble the retaining ring (7).

[0014] During assembly, after the pneumatic valve switch (10) is turned on to allow air to pass through, the corner cylinder (3) will first rotate 90 degrees and then move vertically downward, thereby driving the pressure plate (4) and ball head screw (5) to move vertically downward until the ball head surface of the ball head screw (5) contacts the arc surface of the push rod support inside the tappet (8) and pushes it to move downward; as the compression spring inside the tappet (8) is gradually compressed, the tappet (8) retainer ring mounting groove is fully exposed. At this time, use a special tool to assemble the retainer rings (7) one by one into the tappet (8).

[0015] During use, the force is applied to the ball head screw (5) and the washer (11), and the contact surface is prone to wear. Therefore, the ball head surface of the ball head screw and the surface of the washer are subjected to high hardness heat treatment with a hardness of HRC58 or higher. The purpose is to reduce wear on the working surface and make it more durable, thereby reducing the manufacturing cost.

[0016] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tappet and retainer ring assembly fixture, characterized in that: The assembly includes a base (1), a cylinder seat (2), a corner cylinder (3), a pressure plate (4), a ball head screw (5), a lock nut (6), a retaining ring (7), a tappet (8), a clamping body (9), a pneumatic valve switch (10), and a gasket (11). The base supports the entire assembly. The cylinder seat is installed on the base. The corner cylinder is installed on the cylinder seat. One end of the pressure plate is installed on the corner post of the corner cylinder. The ball head screw is installed on the other end of the pressure plate and fixed with a lock nut. The clamping body is installed on the base, ensuring that the center of the through hole of the clamping body is concentric with the center of the ball head screw. The gasket is placed horizontally in the through hole of the clamping body. The tappet is inserted, and the retaining ring can be assembled by opening the pneumatic valve switch.

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