A pin pulling tool for controlling a valve body of a valve

Abstract

The utility model relates to a kind of pin pulling tool of control valve valve body, including upper end cover and base, the upper end cover is hinged with the base, lower positioning hole is equipped on the base, upper positioning hole and pin hole are equipped on the upper end cover, the upper positioning hole corresponds with the lower positioning hole, the upper positioning hole is matched to form the cavity of accommodating valve body with the lower positioning hole, the pin hole is set on the top wall of the upper positioning hole, the pin hole is through-hole, the pin hole corresponds with the positioning pin of the valve body, the positioning pin protrudes from the upper end cover by passing the pin hole. Upper positioning hole and lower positioning hole cooperate to position and limit the valve body. The upper end cover isolates the contact between the beak forceps and the upper end surface of the valve body, effectively preventing the valve body from being scrapped due to scratches on the upper end surface. Since no compression force is applied to the valve body during pin pulling, radial deformation of the valve body is effectively avoided, further ensuring the quality of the valve body and reducing the scrap rate.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a pin-removing tool for a control valve body. Background Technology

[0002] In the production process of diesel injector valve bodies, locating pins are required for assembly positioning. The locating pins and pin holes use an interference fit. During assembly, a force of 500N is applied to press the locating pin into the pin hole. The height of the locating pin after pressing is then measured. If the height is not up to standard, the locating pin must be removed and re-pressed. Removing the pin requires clamping the workpiece with a vise and then pulling it out with diagonal pliers. During the pin removal process, excessive clamping force in the vise can cause radial deformation of the workpiece. Additionally, if the locating pin is short, the removal process can easily scratch the upper surface of the workpiece, which is the sealing surface, affecting normal use and leading to a high scrap rate. Utility Model Content

[0003] This utility model addresses the existing technical problems by providing a pin-removing tool for a control valve body.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A control valve body pin-pulling tool includes an upper end cover and a base. The upper end cover is hinged to the base. The base is provided with a lower positioning hole. The upper end cover is provided with an upper positioning hole and a pin hole. The upper positioning hole corresponds to the lower positioning hole. The upper positioning hole and the lower positioning hole cooperate to form a cavity for accommodating the valve body. The pin hole is provided on the top wall of the upper positioning hole. The pin hole is a through hole. The pin hole corresponds to the positioning pin of the valve body. The positioning pin passes through the pin hole and protrudes from the upper end cover.

[0005] Based on the above technical solution, the present invention can be further improved as follows:

[0006] Preferably, both the upper positioning hole and the lower positioning hole are provided with multiple holes.

[0007] Preferably, both the upper cover and the base are rectangular parallelepipeds.

[0008] Preferably, the plurality of upper positioning holes are arranged in a matrix on the upper end cover, and the plurality of lower positioning holes are arranged in a matrix on the base.

[0009] Preferably, the upper end cover is provided with a plurality of upper fixing holes, the upper fixing holes being stepped holes, and the plurality of upper fixing holes being arranged along the length direction of the upper end cover. The base is provided with a plurality of lower fixing holes, the lower fixing holes being corresponding to the upper fixing holes, the lower fixing holes being threaded holes, and detachable fasteners being installed on the upper fixing holes and the lower fixing holes.

[0010] Preferably, a protective pad is provided inside the upper positioning hole, and a through hole is provided on the protective pad, the through hole corresponding to the pin hole.

[0011] Preferably, the base has mounting holes at both ends, and the base is connected to the operating table by fasteners inserted into the mounting holes.

[0012] The beneficial effects of this utility model are: the upper positioning hole and the lower positioning hole cooperate to position and limit the valve body, the upper end cover isolates the diagonal pliers from contact with the upper end face of the valve body, effectively avoiding the situation where the upper end face of the valve body is scrapped due to scratches, and since no clamping force is applied to the valve body during the pin pulling process, the radial deformation of the valve body can be effectively avoided, further ensuring the quality of the valve body and reducing the scrap rate. Attached Figure Description

[0013] Figure 1 This is the front view of the pin-removing tool of this utility model;

[0014] Figure 2 This is a three-dimensional schematic diagram of the pin-removing tool of this utility model;

[0015] Figure 3 This is a schematic diagram of the upper cover of this utility model;

[0016] Figure 4 This is a schematic diagram of the base of this utility model.

[0017] The attached diagram is labeled as follows: 10, upper end cover; 11, upper positioning hole; 12, pin hole; 13, upper fixing hole; 20, base; 21, lower positioning hole; 22, lower fixing hole; 23, mounting hole; 30, valve body; 31, positioning pin. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0020] like Figures 1 to 4 As shown, this utility model discloses a pin-pulling tool for a control valve body, including an upper cover 10 and a base 20. The upper cover 10 and the base 20 are hinged together. The base 20 has a lower positioning hole 21, and the upper cover 10 has an upper positioning hole 11 and a pin hole 12. The upper positioning hole 11 corresponds to the lower positioning hole 21, and the upper positioning hole 11 and the lower positioning hole 21 cooperate to form a cavity for accommodating the valve body 30. The pin hole 12 is located on the top wall of the upper positioning hole 11. The pin hole 12 is a through hole and corresponds to the positioning pin 31 of the valve body 30. The positioning pin 31 protrudes from the upper cover 10 through the pin hole 12. The design of this tool allows the operator to apply force to the positioning pin 31 protruding from the upper cover 10 using diagonal pliers during the pin-pulling process, effectively pulling the positioning pin 31 out of the valve body 30. Since the upper cover 10 is hinged to the base 20, the upper cover 10 can be opened or closed flexibly, facilitating the insertion and removal of the valve body 30. The precise fit between the upper positioning hole 11 and the lower positioning hole 21 ensures accurate positioning of the valve body 30 in the tooling, preventing movement or deformation of the valve body 30 during the pin removal process. The upper end cap 10 effectively isolates the pin removal tool from direct contact with the upper surface of the valve body 30, preventing scratches on the upper surface of the valve body 30, thus avoiding damage to the valve body 30 and reducing the scrap rate.

[0021] Furthermore, the number and position of the pin holes 12 correspond to the number and position of the locating pins 31. The locating pins 31 are positioned by the pin holes 12, ensuring that each locating pin 31 can be accurately pulled out, avoiding damage or scrap of the valve body 30 due to incomplete pin removal, and reducing the scrap rate of the valve body 30.

[0022] In this embodiment, multiple upper positioning holes 11 and lower positioning holes 21 are provided to accommodate multiple valve bodies 30, thereby improving the efficiency of pin removal.

[0023] In other alternative embodiments, the multiple upper positioning holes 11 have different shapes and the multiple lower positioning holes 21 have different shapes, thereby adapting to valve bodies 30 of different sizes or shapes, increasing the versatility and flexibility of tooling use.

[0024] In this embodiment, both the upper end cap 10 and the base 20 are rectangular parallelepipeds. Multiple upper positioning holes 11 are arranged in a matrix on the upper end cap 10, and multiple lower positioning holes 21 are arranged in a matrix on the base 20. This makes the tooling structure more compact and facilitates the neat arrangement of the valve bodies 30, improving space utilization.

[0025] Furthermore, the base 20 has mounting holes 23 at both ends, and the base 20 is connected to the operating table by fasteners inserted into the mounting holes 23. The fasteners are hex socket head cap screws or socket head cap bolts, which facilitates the secure installation of the tooling on the operating table and prevents the tooling from moving or tipping over during the pin removal process, thus ensuring the safety and stability of the operation.

[0026] In other alternative embodiments, the upper cover 10 and the base 20 can also be other shapes such as cylinders, which can also achieve the function of positioning and protecting the valve body 30.

[0027] In this embodiment, specifically, the upper end cover 10 is provided with multiple upper fixing holes 13, which are stepped holes. These upper fixing holes 13 are arranged along the length of the upper end cover 10. The base 20 is provided with multiple lower fixing holes 22, which correspond to the upper fixing holes 13 and are threaded holes. Removable fasteners are installed on the upper fixing holes 13 and the lower fixing holes 22. The stepped upper fixing holes 13 facilitate the installation and fixing of fasteners. The fasteners are countersunk screws. During use, the head of the fastener is located within the stepped hole, preventing interference between the fastener and the disassembly fixture, thus improving the efficiency and convenience of disassembling the positioning pin 31. Multiple upper fixing holes 13 are provided along the length of the upper end cover 10, and lower fixing holes 22 correspond to the upper fixing holes 13. The lower fixing holes 22 are threaded holes, which facilitates the use of fasteners to achieve a firm connection between the upper end cover 10 and the base 20. This prevents the upper end cover 10 from moving or shaking when the pin is pulled out, thus avoiding damage to the valve body 30 and ensuring the stability of the tooling during use.

[0028] Furthermore, a protective pad is provided within the upper positioning hole 11, and the protective pad has a through hole corresponding to the pin hole 12. The protective pad further protects the valve body 30, reducing friction and wear between the valve body 30 and the tooling during pin removal, thus extending the service life of the valve body 30. Simultaneously, the softness of the protective pad helps reduce impact force during pin removal, improving safety. The protective pad can be made of rubber. The protective pad is suitable for situations where the positioning pin 31 is long, increasing the applicability of the tooling and reducing usage costs.

[0029] In summary, the control valve body pin-pulling tool of this utility model has the advantages of simple structure, convenient operation, accurate positioning, good protection effect, and strong versatility. It effectively solves the problems of scratches and deformation of the valve body 30 in the existing pin-pulling process, improves the pin-pulling efficiency, and ensures the quality of the valve body 30.

[0030] 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, improvements, etc., 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 pin-pulling tool for a control valve body, characterized in that, Includes an upper end cover (10) and a base (20). The upper end cover (10) is hinged to the base (20). The base (20) is provided with a lower positioning hole (21). The upper end cover (10) is provided with an upper positioning hole (11) and a pin hole (12). The upper positioning hole (11) corresponds to the lower positioning hole (21). The upper positioning hole (11) and the lower positioning hole (21) cooperate to form a cavity for accommodating the valve body (30). The pin hole (12) is provided on the top wall of the upper positioning hole (11). The pin hole (12) is a through hole. The pin hole (12) corresponds to the positioning pin (31) of the valve body (30). The positioning pin (31) passes through the pin hole (12) and protrudes from the upper end cover (10).

2. The pin-pulling fixture for the control valve body according to claim 1, characterized in that, Both the upper positioning hole (11) and the lower positioning hole (21) are provided with multiple holes.

3. The control valve body pin-pulling tool according to claim 2, characterized in that, Both the upper end cap (10) and the base (20) are rectangular parallelepipeds.

4. The pin-pulling fixture for the control valve body according to claim 2 or 3, characterized in that, The plurality of upper positioning holes (11) are arranged in a matrix on the upper end cover (10), and the plurality of lower positioning holes (21) are arranged in a matrix on the base (20).

5. The pin-pulling tool for the control valve body according to claim 1, characterized in that, The upper end cover (10) is provided with a plurality of upper fixing holes (13), the upper fixing holes (13) are stepped holes, the plurality of upper fixing holes (13) are arranged along the length direction of the upper end cover (10), the base (20) is provided with a plurality of lower fixing holes (22), the lower fixing holes (22) correspond to the upper fixing holes (13), the lower fixing holes (22) are threaded holes, and detachable fasteners are installed on the upper fixing holes (13) and the lower fixing holes (22).

6. The pin-pulling tool for the control valve body according to claim 1, characterized in that, The upper positioning hole (11) is provided with a protective pad, and the protective pad is provided with a through hole, which corresponds to the pin hole (12).

7. The pin-pulling fixture for the control valve body according to claim 1, characterized in that, The base (20) has mounting holes (23) at both ends, and the base (20) is connected to the operating table by fasteners inserted into the mounting holes (23).

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