A kind of auxiliary tool for O-ring assembly of threaded pipe joint parts

Abstract

The utility model relates to sealing ring assembly technical field, especially disclose a kind of for threaded pipe joint class parts O ring assembly, including positioning sleeve, taper positioning column is slidably installed in the positioning sleeve, spring is installed in the inside of the positioning sleeve, top rod is threadedly installed on the taper positioning column, end cap is threadedly installed in the side end of the positioning sleeve;Top disc is resisted after taper positioning column will not be slid in positioning sleeve, at this time, multiple O type sealing rings are successively along the taper of taper positioning column Small end sleeve, then push O type sealing ring and move to positioning sleeve, then align taper positioning column with threaded pipe joint, then push positioning sleeve, taper positioning column will be pushed to the inside of positioning sleeve by threaded pipe joint, at this time, taper positioning column will compress spring, so that positioning sleeve can be sleeved on threaded pipe joint, reach the effect of improving the service life of O type sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring assembly technology, and in particular to an auxiliary tool for assembling O-rings in threaded pipe fittings. Background Technology

[0002] In the field of mechanical manufacturing, the accurate and efficient assembly of O-rings is crucial for threaded pipe fittings, directly affecting the sealing performance and overall quality of the fitting. In practical applications, an auxiliary tool for assembling O-rings in threaded pipe fittings typically requires the following technologies:

[0003] 1. Expansion Mechanism: With the help of expansion tools, such as expansion pliers and elastic expansion sleeves, the O-ring is appropriately expanded so that it can be smoothly fitted into the threaded pipe fitting. Expansion pliers can evenly open the O-ring through the mechanical lever principle, while elastic expansion sleeves use their own elastic deformation to fit on the O-ring and expand it, which facilitates subsequent assembly operations.

[0004] 2. Pushing Mechanism: The expanded O-ring is smoothly pushed to the designated installation position of the threaded pipe fitting using push rods, pneumatic push rods, and other devices. The push rod can be operated manually to push the O-ring into place by hand, while the pneumatic push rod uses compressed air to provide power, achieving more precise and efficient pushing and ensuring that the O-ring is firmly installed.

[0005] When assembling O-rings for sealing threaded pipe fittings, the O-ring's surface is easily damaged during the process of passing through the external thread to the sealing groove. This is because the thread profile at the outer major diameter of the external thread is relatively sharp. After prolonged use, the surface damage gradually increases until the O-ring breaks, causing it to fail to seal. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an auxiliary tool for assembling O-rings in threaded pipe fittings. It solves the technical problem that during the assembly of sealing O-rings in threaded pipe fittings, the O-ring surface is easily damaged due to the sharp thread profile at the outer large diameter of the external thread, and the surface damage gradually increases until the O-ring breaks after long-term use, causing the seal to fail.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An auxiliary tool for assembling O-rings on threaded pipe fittings includes a positioning sleeve, a conical positioning pin slidably mounted in the positioning sleeve, a spring installed inside the positioning sleeve, a push rod threaded onto the conical positioning pin, and an end cap threaded onto the side end of the positioning sleeve.

[0009] Preferably, the positioning sleeve is provided with a gripping part.

[0010] Preferably, the grip area has anti-slip grooves.

[0011] Preferably, a top plate is fixedly installed on the side end of the top rod.

[0012] Preferably, the spring is located between the conical positioning post and the end cap.

[0013] Preferably, the top rod and the end cap are slidably connected.

[0014] Preferably, the side ends of the positioning sleeve are rounded.

[0015] Preferably, the beveled surface of the side end of the conical positioning post extends out of the positioning sleeve.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When using, pinch the handle with your hand. Your palm will press against the top plate. Once the top plate is pressed against, the conical positioning pin will not be able to slide within the positioning sleeve. Then, insert multiple O-rings sequentially along the smaller end of the conical positioning pin's taper. Next, push the O-rings onto the positioning sleeve. Align the conical positioning pin with the threaded pipe fitting. The conical positioning pin can then be inserted into the inner wall of the threaded pipe fitting through its conical surface, serving a positioning function. Then, push the positioning sleeve. When pushing the positioning sleeve, the hand pinching the handle will produce a slight wrist rotation, allowing the palm to avoid the top plate. After the top plate is unrestrained, the conical positioning pin will be pushed into the positioning sleeve by the threaded pipe fitting. At this point, the conical positioning pin will compress the spring, allowing the positioning sleeve to fit onto the threaded pipe fitting. Then, push the O-rings outward. The O-rings will then be assembled into the sealing groove of the threaded pipe fitting, preventing the surface of the O-ring from being scratched by the threads and thus extending the service life of the O-rings.

[0018] Second, the positioning sleeve can accommodate multiple O-rings. With the auxiliary positioning axis of the tapered positioning post, multiple O-rings can be quickly, efficiently, and without damage placed onto multiple threaded pipe fittings, thereby improving production efficiency. Attached Figure Description

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is an overall structural diagram of the present invention;

[0021] Figure 2 This is a structural diagram of the end cap of this utility model;

[0022] Figure 3This is a cross-sectional structural diagram of the present invention;

[0023] Figure 4 This is an exploded structural diagram of the present invention;

[0024] Figure 5 This is a schematic diagram illustrating the use of this utility model.

[0025] Illustration: 1. Positioning sleeve; 2. Conical positioning post; 3. Spring; 4. Top rod; 5. End cap; 6. Grip part; 7. Anti-slip groove; 8. Top plate. Detailed Implementation

[0026] This application provides an auxiliary tool for assembling O-rings on threaded pipe fittings. It effectively solves the technical problem that during the assembly of sealing O-rings on threaded pipe fittings, the sharp thread profile at the outer diameter of the external thread easily damages the O-ring surface, leading to breakage and sealing failure after prolonged use. In this tool, the O-ring is held by hand, with the palm pressing against the top plate. This prevents the conical positioning post from sliding within the positioning sleeve. Multiple O-rings are then sequentially inserted along the smaller end of the conical positioning post's taper. The O-rings are then pushed onto the positioning sleeve, and the conical positioning post is aligned with the threaded pipe fitting, allowing it to be inserted into the threaded pipe fitting through its conical surface. The inner wall of the connector serves a positioning function. Pushing the positioning sleeve causes a slight wrist rotation when the hand holding the gripper is in motion, allowing the palm to avoid the top plate. Once the top plate is unrestrained, the conical positioning pin is pushed into the positioning sleeve by the threaded pipe connector. At this point, the conical positioning pin compresses the spring, allowing the positioning sleeve to fit onto the threaded pipe connector. Pushing the O-ring outwards then assembles it into the sealing groove of the threaded pipe connector, preventing scratches on the O-ring surface and extending its service life. Multiple O-rings can be fitted onto the positioning sleeve. Combined with the auxiliary positioning axis of the conical positioning pin, multiple O-rings can be quickly, efficiently, and without damage fitted onto multiple threaded pipe connectors, thus improving production efficiency.

[0027] Example

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the technical solution in this application embodiment effectively solves the technical problem that when assembling O-rings for sealing in threaded pipe fittings, the O-ring surface is easily damaged due to the sharp thread profile at the outer major diameter of the external thread during the process of the O-ring passing through the external thread to the sealing groove installation position. After long-term use, the surface damage of the O-ring gradually increases until it breaks, causing the seal to fail. The overall idea is as follows:

[0029] To address the problems existing in the prior art, this utility model provides an auxiliary tool for assembling O-rings on threaded pipe fittings, including a positioning sleeve 1, a conical positioning pin 2 slidably installed in the positioning sleeve 1, a spring 3 installed inside the positioning sleeve 1, and a push rod 4 threadedly installed on the conical positioning pin 2.

[0030] The positioning sleeve 1 is threaded with an end cap 5 on its side end, and a gripping part 6 is provided on the positioning sleeve 1. An anti-slip groove 7 is provided on the gripping part 6, and a top plate 8 is fixedly installed on the side end of the top rod 4.

[0031] Spring 3 is located between cone-shaped positioning post 2 and end cap 5. Top rod 4 is slidably connected to end cap 5. The side end of positioning sleeve 1 is rounded. The inclined surface of the side end of cone-shaped positioning post 2 extends out of positioning sleeve 1.

[0032] Positioning sleeve 1: As the basic structure of the auxiliary tool, it provides installation and operation space for other components. The conical positioning post 2 slides and guides inside. The threaded connection end cap 5 on the side end ensures structural stability and sealing. It can temporarily support the O-ring seal. The rounded corners on the side end facilitate the movement of the O-ring seal to the positioning sleeve 1 by the conical positioning post 2. When the positioning sleeve 1 is fitted on the threaded pipe joint, it can prevent the O-ring seal from contacting the threads of the pipe joint.

[0033] Conical positioning post 2: It can slide in the positioning sleeve 1. Its conical structure makes it easy to fit the O-ring seal, and it can also accurately position the axis of the two by inserting the conical surface into the inner wall of the threaded pipe joint. The side end bevel extends out of the positioning sleeve 1 to facilitate the O-ring seal to be fitted from the small end of the taper. It can slide into the positioning sleeve 1 to compress the spring 3 under the thrust of the threaded pipe joint. After the operation, it will reset under the elastic force of the spring 3.

[0034] Spring 3: Installed between the conical positioning post 2 and the end cap 5 inside the positioning sleeve 1, it stores elastic potential energy when compressed by the conical positioning post 2, and releases the elastic force to reset the conical positioning post 2 after the threaded pipe joint is pulled out.

[0035] Top rod 4: threaded on the conical positioning post 2, with a top plate 8 installed on the side end. During operation, it is pressed against by the palm of the hand to restrict the sliding of the conical positioning post 2, and is slidably connected to the end cover 5 to ensure stable operation.

[0036] End cap 5: Threadedly installed on the side of the positioning sleeve 1 to seal the internal space and prevent parts from coming out, and to provide support for the spring 3 to ensure its normal operation;

[0037] Grip part 6: It is set on the positioning sleeve 1 to facilitate the operator's grip and make the operation convenient and flexible;

[0038] Anti-slip groove 7: It is formed on the grip part 6 to increase the friction between the palm and the grip part 6, prevent the hand from slipping during operation and ensure stable and reliable operation;

[0039] Top plate 8: Fixed to the side end of top rod 4. During operation, the palm of the hand should be pressed against the tapered positioning post 2 to restrict its sliding so that the O-ring can be fitted. After the palm of the hand moves away, the tapered positioning post 2 can move under the action of the threaded pipe joint.

[0040] Working principle:

[0041] When using the device, pinch the grip part 6 with your hand. Your palm will then press against the top plate 8. With the top plate 8 pressed against, the conical positioning post 2 will be unable to slide within the positioning sleeve 1. Then, insert multiple O-rings sequentially along the smaller end of the tapered end of the conical positioning post 2. Next, push the O-rings onto the positioning sleeve 1. Align the conical positioning post 2 with the threaded pipe fitting. The conical positioning post 2 will then insert into the inner wall of the threaded pipe fitting through its conical surface, thus achieving a positioning function. Finally, push the positioning sleeve 1 while pinching the grip part. The hand holding part 6 will make a slight wrist rotation, allowing the palm to avoid the top plate 8. After the top plate 8 is unrestrained, the conical positioning pin 2 will be pushed into the positioning sleeve 1 by the threaded pipe joint. At this time, the conical positioning pin 2 will press the spring 3, allowing the positioning sleeve 1 to be fitted onto the threaded pipe joint. Then, push the O-ring outward, and the O-ring can be assembled into the sealing groove of the threaded pipe joint. Then pull out the threaded pipe joint, and the conical positioning pin 2 can be reset under the elastic force of the spring 3 for the next use.

[0042] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An auxiliary tool for assembling O-rings on threaded pipe fittings, comprising a positioning sleeve (1), characterized in that, A conical positioning post (2) is slidably installed in the positioning sleeve (1), a spring (3) is installed inside the positioning sleeve (1), a top rod (4) is threaded on the conical positioning post (2), and an end cap (5) is threaded on the side end of the positioning sleeve (1).

2. The auxiliary tool for assembling O-rings in threaded pipe fittings as described in claim 1, characterized in that, The positioning sleeve (1) is provided with a gripping part (6).

3. The auxiliary tool for assembling O-rings in threaded pipe fittings as described in claim 2, characterized in that, The grip (6) is provided with anti-slip grooves (7).

4. The auxiliary tool for assembling O-rings in threaded pipe fittings as described in claim 1, characterized in that, The top plate (8) is fixedly installed on the side end of the top rod (4).

5. The auxiliary tool for assembling O-rings in threaded pipe fittings as described in claim 1, characterized in that, The spring (3) is located between the conical positioning post (2) and the end cap (5).

6. The auxiliary tool for assembling O-rings in threaded pipe fittings as described in claim 1, characterized in that, The top rod (4) is slidably connected to the end cap (5).

7. The auxiliary tool for assembling O-rings in threaded pipe fittings as described in claim 1, characterized in that, The side ends of the positioning sleeve (1) are rounded.

8. The auxiliary tool for assembling O-rings in threaded pipe fittings as described in claim 1, characterized in that, The inclined surface of the side end of the conical positioning post (2) extends out of the positioning sleeve (1).

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