Penetrating and guiding rod for piston ring

Abstract

The utility model discloses a threading rod for a piston ring, which is applied to the technical field of piston rings and comprises a telescopic rod body and a threading rod body, a threaded shaft which is in threaded connection with the threading rod body is rotatably connected inside the telescopic rod body in a penetrating manner, and a linear chute is arranged on the surface of the threading rod body. The threaded shaft is rotated to be in threaded engagement with the threading stick body, the length of the telescopic stick body and the length of the threading stick body can be adjusted, and the diameter of the extending part is consistent with the diameter of the surface of the telescopic stick body and the diameter of the surface of the threading stick body through the extending rod. Therefore, the inner diameter of the piston ring is supported, and the surface penetrating stability of the piston ring is guaranteed. The trapezoidal clamping block pops up to the surface of the threading rod body through the elastic force of the spring, and the piston ring threaded on the surface of the threading rod body is automatically limited, so that the piston ring is prevented from sliding and falling off. And meanwhile, the trapezoidal clamping block can be retracted into the threading rod body by actively rotating the threaded rod, so that the piston ring is taken out from the surface of the threading rod body, and the practicability of the threading rod is improved.

Description

Technical Field

[0001] This utility model belongs to the field of piston ring technology, and specifically relates to a threading rod for piston rings. Background Technology

[0002] Piston rings are metal rings used to fit inside the grooves of a piston. During the machining of piston rings, a guide rod is used to pass through the inside of multiple piston rings, thereby lifting and moving multiple piston rings at the same time for machining.

[0003] Currently, Chinese utility model patent CN220126633U discloses a piston ring painting fixture. Existing guide rollers, to facilitate picking up different numbers of piston rings, typically allow for extension and retraction at both ends to adjust the length of the guide roller.

[0004] However, when adjusting the length of the threading rod, pulling one end outwards brings out an extension section that is stored inside the threading rod. Since these extension sections must have a diameter smaller than the threading rod to retract within it, the diameter of the extended section is inconsistent with the threading rod itself. This causes the threading rod to wobble on the surface of the extension section when threading multiple piston rings. Furthermore, existing threading rods require the end of the threading rod to face upwards after threading the piston rings; otherwise, the piston rings will slide downwards due to gravity, causing them to detach from the rod. This makes it difficult to move the threading rod after threading the piston rings, impacting its practicality. Utility Model Content

[0005] The purpose of this utility model is to provide a threading rod for piston rings, which has the advantages of making it easy to determine the length of the threading rod, ensuring the stability of the piston ring on the surface, and preventing the piston ring from automatically falling off after threading.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a guide rod for piston rings, comprising a telescopic rod body and a guide rod body, wherein a threaded shaft threadedly connected to the guide rod body is rotatably connected through the telescopic rod body, a straight groove is provided on the surface of the guide rod body, and an extension rod slidably connected to the straight groove is welded to one end of the telescopic rod body near the guide rod body.

[0007] By employing the above technical solution, the lengths of the telescopic and guiding rollers can be adjusted through threaded engagement between the rotating threaded shaft and the guiding roller body. An extension rod ensures that the extended portion matches the diameter of the surface of both the telescopic and guiding roller bodies. This supports the inner diameter of the piston ring, ensuring its stability as it is threaded onto the surface. A trapezoidal locking block, propelled by a spring, automatically limits the piston ring threaded onto the guiding roller body, preventing it from slipping off. Alternatively, the trapezoidal locking block can be retracted into the guiding roller body by actively rotating the threaded rod, allowing the piston ring to be removed from the surface, thus improving the practicality of the guiding roller.

[0008] The present invention is further configured such that: a trapezoidal locking block is provided at one end of the guide rod body away from the telescopic rod body; a spring is bolted to the side of the trapezoidal locking block near the interior of the guide rod body; a sliding block is bolted to the end of the spring away from the trapezoidal locking block and slidably connected to the guide rod body; a threaded rod is rotatably connected to the end of the sliding block away from the telescopic rod body and threadedly connected to the guide rod body; and an abutment groove is provided inside the guide rod body to cooperate with the inclined surface of the trapezoidal locking block.

[0009] By adopting the above technical solution, the piston rings that are threaded onto the surface of the threading rod can be automatically limited, thereby preventing the piston rings from slipping off. At the same time, the piston rings can be actively removed from the surface of the threading rod.

[0010] The present invention is further configured such that: a rotating block is welded to the end of the threaded rod away from the sliding block, and an arc-shaped end face is provided on the end of the rotating block away from the threaded rod.

[0011] By adopting the above technical solution, it is convenient to adjust the sliding block by rotating the rotating block to drive the threaded rod to engage with the threaded rod body, and at the same time, the rotating block with the arc-shaped end face also facilitates the threading of the piston ring.

[0012] The present invention is further configured such that: a positioning rod welded to the sliding block is slidably connected through the interior of the trapezoidal block, and the spring is sleeved on the surface of the positioning rod.

[0013] By adopting the above technical solution, the sliding of the trapezoidal block is limited, thereby improving the stability of the trapezoidal block's up-and-down bouncing.

[0014] The present invention is further configured such that an anti-slip sleeve is fixedly fitted onto the surface of the telescopic rod body at the end away from the guide rod body.

[0015] By adopting the above technical solution, the friction of the surface of the telescopic baton held by the staff is increased, making it easier to hold the telescopic baton and control the guide baton to guide the piston ring.

[0016] The present invention is further configured such that: an adjustment block is provided at the end of the telescopic rod body away from the guide rod body, and the adjustment block is welded to the end of the threaded shaft away from the guide rod body.

[0017] The above technical solution facilitates the adjustment of the threaded shaft and the threading roller body by rotating the adjusting block to engage the threaded shaft, thereby adjusting the length of the threading roller.

[0018] In summary, this utility model has the following beneficial effects:

[0019] 1. By rotating the threaded shaft and engaging it with the threaded roller body, the lengths of the telescopic roller body and the threading roller body can be adjusted. The extension rod ensures that the extended portion matches the diameter of the surface of the telescopic roller body and the threading roller body. This supports the inner diameter of the piston ring, ensuring the stability of the piston ring as it is threaded onto the surface.

[0020] 2. A trapezoidal locking block, propelled by a spring, is ejected onto the surface of the threading rod, automatically limiting the piston ring threaded onto the rod surface and preventing it from slipping off. Simultaneously, the trapezoidal locking block can be retracted into the threading rod by actively rotating the threaded rod, allowing the piston ring to be removed from the rod surface, thus improving the practicality of the threading rod. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0023] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the image;

[0024] Figure 4 This is a partial structural side sectional view of this utility model.

[0025] Reference numerals in the attached drawings: 1. Telescopic rod body; 2. Guide rod body; 3. Threaded shaft; 4. Straight groove; 5. Extension rod; 6. Trapezoidal locking block; 7. Threaded rod; 8. Sliding block; 9. Spring; 10. Abutment groove; 11. Rotating block; 12. Positioning rod; 13. Anti-slip sleeve; 14. Adjusting block. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1:

[0028] refer to Figure 1 , Figure 2 , Figure 4A piston ring threading rod includes a telescopic rod body 1 and a threading rod body 2. A threaded shaft 3, threadedly connected to the threading rod body 2, is rotatably connected through the telescopic rod body 1. A straight groove 4 is formed on the surface of the threading rod body 2. An extension rod 5, slidably connected to the straight groove 4, is welded to one end of the telescopic rod body 1 near the threading rod body 2. The lengths of the telescopic rod body 1 and the threading rod 2 can be adjusted by rotating the threaded shaft 3 to engage with the threading rod body 2. The extension rod 5 ensures that the extended portion matches the diameter of the surfaces of the telescopic rod body 1 and the threading rod body 2. This supports the inner diameter of the piston ring and ensures the stability of the piston ring threading on the surface.

[0029] refer to Figure 1 , Figure 2 An anti-slip sleeve 13 is fixedly fitted onto the surface of the telescopic baton 1 at the end away from the threading baton 2. This increases the friction of the surface of the telescopic baton 1 held by the operator, making it easier to hold the telescopic baton 1 and control the threading baton 2 to thread the piston ring.

[0030] refer to Figure 1 , Figure 2 An adjusting block 14 is provided at the end of the telescopic rod body 1 away from the threaded rod body 2. The adjusting block 14 is welded to the end of the threaded shaft 3 away from the threaded rod body 2. This allows the threaded shaft 3 to engage with the threaded rod body 2 by rotating the adjusting block 14, thereby adjusting the length of the threaded rod.

[0031] Brief description of the usage process: By rotating the threaded shaft 3, it engages with the threaded rod body 2, causing the threaded shaft 3 to slide outward and pull the telescopic rod body 1 away from the threaded rod body 2. Then, the telescopic rod body 1 drives the extension rod 5 to slide outward inside the linear groove 4, allowing the lengths of the telescopic rod body 1 and the threaded rod body 2 to be adjusted, and self-locking is achieved by the threaded engagement friction between the threaded shaft 3 and the threaded rod body 2. At the same time, the extension rod 5 supports the extended portions of the telescopic rod body 1 and the threaded rod body 2, ensuring that their diameters match the surfaces of the telescopic rod body 1 and the threaded rod body 2.

[0032] Example 2:

[0033] refer to Figure 1 , Figure 2 , Figure 3A piston ring threading rod is provided. At the end of the threading rod body 2 away from the telescopic rod body 1, a trapezoidal locking block 6 is provided. A spring 9 is bolted to the side of the trapezoidal locking block 6 near the interior of the threading rod body 2. At the end of the spring 9 away from the trapezoidal locking block 6, a sliding block 8 is bolted and slidably connected to the threading rod body 2. At the end of the sliding block 8 away from the telescopic rod 1, a threaded rod 7 is rotatably connected and threaded through the threading rod body 2. An abutment groove 10 is provided inside the threading rod body 2 to engage with the inclined surface of the trapezoidal locking block 6. The trapezoidal locking block 6 is ejected from the surface of the threading rod body 2 by the elastic force of the spring 9, automatically limiting the piston ring threaded onto the surface of the threading rod body 2, thereby preventing the piston ring from slipping off. Simultaneously, the trapezoidal locking block 6 can be retracted into the interior of the threading rod body 2 by actively rotating the threaded rod 7, allowing the piston ring to be removed from the surface of the threading rod 2, improving the practicality of the threading rod.

[0034] refer to Figure 1 , Figure 3 A rotating block 11 is welded to the end of the threaded rod 7 away from the sliding block 8. The end of the rotating block 11 away from the threaded rod 7 has an arc-shaped end face. This facilitates the adjustment of the sliding block 8 by rotating the rotating block 11 to drive the threaded rod 7 to engage with the threaded rod body 2. At the same time, the arc-shaped end face of the rotating block 11 also facilitates the threading of the piston ring.

[0035] refer to Figure 3 The trapezoidal locking block 6 has a sliding connection inside, with a positioning rod 12 welded to the sliding block 8. A spring 9 is sleeved on the surface of the positioning rod 12. This limits the sliding of the trapezoidal locking block 6 and improves the stability of its up-and-down movement.

[0036] Brief description of the usage process: The piston ring is guided by the guide rod 2. The piston ring, fitted onto the surface of the guide rod 2, presses against the inclined surface of the trapezoidal locking block 6, causing the trapezoidal locking block 6 to overcome the elastic force of the spring 9 and retract into the guide rod 2. Then, after the piston ring is fitted onto the surface of the guide rod 2, the trapezoidal locking block 6 is again ejected onto the surface of the guide rod 2 by the rebound force of the spring 9. At this time, the piston ring can no longer exert pressure on the vertical surface of the trapezoidal locking block 6 on the other side. Therefore, the trapezoidal locking block 6 can limit the piston ring on the surface of the guide rod 2, thereby preventing the piston ring from falling off. Finally, by manually rotating the threaded rod 7, which engages with the threaded guide rod 2, the sliding block 8 slides, causing the guide rod 2 to exert pressure on the trapezoidal locking block 6 using the abutment groove 10, retracting the trapezoidal locking block 6 into the guide rod 2. Then, the piston ring can be actively removed from the surface of the guide rod 2 as needed.

[0037] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A threading stick for piston rings, comprising a telescopic stick body (1) and a threading stick body (2), characterized in that: The inside of the telescopic stick body (1) is rotatably connected with a threaded shaft (3) which is threadedly connected with a penetrating stick body (2), the surface of the penetrating stick body (2) is provided with a linear sliding groove (4), and the end of the telescopic stick body (1) close to the penetrating stick body (2) is welded with an extension rod (5) which is slidingly connected with the linear sliding groove (4).

2. A threading stick for a piston ring according to claim 1, characterized in that: The end of the penetrating stick body (2) away from the telescopic stick body (1) is provided with a trapezoidal clamping block (6), the side of the trapezoidal clamping block (6) close to the inside of the penetrating stick body (2) is bolted with a spring (9), the end of the spring (9) away from the trapezoidal clamping block (6) is bolted with a sliding block (8) which is slidingly connected with the penetrating stick body (2), the end of the sliding block (8) away from the telescopic stick body (1) is rotatably connected with a threaded rod (7) which is threadedly connected with the penetrating stick body (2), and the inside of the penetrating stick body (2) is provided with an abutting groove (10) which is used in cooperation with the inclined surface of the trapezoidal clamping block (6).

3. A piercing mandrel for a piston ring according to claim 2, wherein: The end of the threaded rod (7) away from the sliding block (8) is welded with a rotating block (11), and the end of the rotating block (11) away from the threaded rod (7) is provided with an arc-shaped end face.

4. A piercing mandrel for a piston ring according to claim 2, wherein: The inside of the trapezoidal clamping block (6) is slidingly connected with a positioning rod (12) which is welded with the sliding block (8), and the surface of the positioning rod (12) is sleeved with the spring (9).

5. A piercing mandrel for a piston ring according to claim 1 wherein: The surface of the end of the telescopic stick body (1) away from the penetrating stick body (2) is fixedly sleeved with an anti-skid sleeve (13).

6. A piercing mandrel for a piston ring according to claim 1 wherein: The end of the telescopic stick body (1) away from the penetrating stick body (2) is provided with an adjusting block (14), and the end of the adjusting block (14) away from the penetrating stick body (2) is welded with the threaded shaft (3).

Images