CN219768141U

CN219768141U - Quick pin remover

Info

Publication number: CN219768141U
Application number: CN202320772347.2U
Authority: CN
Inventors: 吕鑫; 李斌斌; 夏峰
Original assignee: Shanghai Dongyan Machinery Co ltd
Current assignee: Shanghai Dongyan Machinery Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-09-29
Anticipated expiration: 2033-04-10

Abstract

The utility model belongs to the technical field of machining of mechanical parts, and particularly discloses a quick pin remover which comprises a mandrel assembly and a spring steel sleeve, wherein the mandrel assembly comprises a handle, a screwing nut and a taper mandrel, the main body of the mandrel assembly is a taper mandrel, the taper mandrel is a solid cylinder, the upper end of the taper mandrel is a section of thread, the lower end of the taper mandrel is a cone, the upper end of the thread is connected with the handle, and the lower part of the thread is connected with the screwing nut; the spring steel sleeve is of an integrated structure, the spring steel sleeve is a hollow steel pipe, the upper end of the spring steel sleeve is annular open, the diameter of the open is larger than that of the spring steel sleeve, and an annular baffle is arranged below the open.

Description

Quick pin remover

Technical Field

The utility model relates to the technical field of machining of mechanical parts, in particular to a quick pin remover.

Background

At present, overheating is generated in the welding process, and a rapid cooling process is not achieved, so that deformation of products is unavoidable, and particularly for products with shaft holes, the deformation is obvious, and the subsequent assembly is affected. In the case, most of the methods adopt the method that a fixed pin is inserted in a shaft hole in advance and then welded, the welding is completed and the pin is pulled out after waiting for cooling, and the method has the defects that firstly, the pin is pulled out manually by a pin pulling device, time and labor are wasted, the pin can be pulled out only in 1 to 2 minutes at least, and the production efficiency is low; and secondly, the pin is pulled out roughly, so that the hole wall is scratched, the roughness is influenced, and the subsequent assembly is also influenced.

Disclosure of Invention

The present utility model is directed to a quick out-of-stock device, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the quick pin remover comprises a mandrel assembly and a spring steel sleeve, wherein the mandrel assembly comprises a handle, a screwing nut and a taper mandrel, the main body of the mandrel assembly is the taper mandrel, the taper mandrel is a solid cylinder, the upper end of the taper mandrel is a section of thread, the lower end of the taper mandrel is a cone, the upper end of the thread is connected with the handle, and the lower part of the thread is connected with the screwing nut; the spring steel sleeve is of an integrated structure, the spring steel sleeve is a hollow steel pipe, the upper end of the spring steel sleeve is annular open, the diameter of the open is larger than that of the spring steel sleeve, and an annular baffle is arranged below the open.

Preferably, a hexagonal nut fixing handle is arranged below the handle.

Preferably, waffle texture protrusions are arranged on the surface of the outer ring of the screwing nut.

Preferably, a plurality of round holes are uniformly formed in the middle of the spring steel.

Preferably, the diameter of the spring steel sleeve is larger than the diameter of the cone bottom surface circle at the lower end of the taper mandrel.

Preferably, the taper mandrel is made of 45 steel.

Preferably, the spring steel sleeve is made of 65Mn spring steel.

Compared with the prior art, the utility model has the beneficial effects that: 1. simple structure and low manufacturing cost. 2. Can take off the round pin fast, need not to pull out outward like traditional pin remover slowly, consuming time and consuming effort has improved production efficiency. 3. Compared with the traditional process after pin removal, the hole wall is not damaged, the roughness is prevented from being influenced, and the subsequent assembly of the workpiece is not influenced any more. 4. The tool of the utility model can be comprehensively popularized to the existing welding process with higher end in future, and improves the efficiency of the whole production process.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of the component mandrel assembly of the present utility model;

FIG. 3 is a schematic view of the spring steel sleeve of the present utility model;

FIG. 4 is a cross-sectional view of the utility model in use;

fig. 5 is a top view of the utility model in use.

In the figure: 1. a mandrel assembly; 101. a handle; 102. a threaded section; 103. screwing the nut; 104. taper mandrel; 2. a spring steel sleeve; 201. An opening; 202. and a baffle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-4, the present utility model provides a technical solution: the quick pin remover comprises a mandrel assembly 1 and a spring steel sleeve 2, wherein the mandrel assembly 1 comprises a handle 101, a screwing nut 103 and a taper mandrel 104, the main body of the mandrel assembly 1 is a taper mandrel 104, the taper mandrel 104 is a solid cylinder, the upper end of the taper mandrel 104 is a section of thread 102, the lower end of the taper mandrel 104 is a cone, the upper end of the thread section 102 is connected with the handle 101, and the screwing nut 103 is connected below the thread section 102; the spring steel sleeve 2 is of an integrated structure, the spring steel sleeve 2 is a hollow steel pipe, the upper end of the spring steel sleeve 2 is provided with an annular opening 201, the diameter of the opening 201 is larger than that of the spring steel sleeve 2, and an annular baffle 202 is arranged below the opening 201.

Further, a hexagonal nut fixing handle 101 is disposed below the handle 101.

Furthermore, waffle texture protrusions are arranged on the outer ring surface of the screwing nut 103, friction force is increased, and screwing is facilitated.

Further, a plurality of round holes are formed in the middle of the spring steel sleeve 2, so that the air pressure of a gap between the spring steel sleeve 2 and the mandrel assembly 1 after screwing is kept, and the situation that the taper mandrel 104 cannot be separated from the spring steel sleeve 2 does not occur.

Further, the diameter of the spring steel sleeve 2 is larger than the diameter of the cone bottom surface circle at the lower end of the taper mandrel 104.

Further, the tapered mandrel 104 is made of 45# steel, so that the tapered mandrel has higher strength and deformation resistance.

Further, the spring steel sleeve 2 is made of 65Mn spring steel and has overheat sensitivity and tempering brittleness.

Working principle: the utility model provides a quick pin remover, which comprises a taper mandrel 104, a spring steel sleeve is designed again, and the taper mandrel 104 is inserted into the spring steel sleeve 2, and the spring steel sleeve is inserted into a workpiece hole to be processed, and the baffle 202 of the spring steel sleeve 2 is clamped at the outer end of the workpiece hole, and then a screwing nut 103 is rotated, so that the cone part of the taper mandrel 104 moves backwards, the spring steel sleeve 2 is expanded to the size required by the hole wall of the workpiece, and interference fit is formed, as shown in fig. 2; then friction welding is carried out on the workpiece; after welding, the screwing nut 103 is loosened, the taper mandrel 104 moves forwards, the spring steel sleeve 2 is tightened to be in clearance fit, the spring steel sleeve 2 is contracted to be in an initial state and is not attached to the hole wall any more, and then the whole device is taken out easily, so that the whole process is completed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A quick pin remover, characterized in that: the spring steel sleeve comprises a mandrel assembly (1) and a spring steel sleeve (2), wherein the mandrel assembly (1) comprises a handle (101), a screwing nut (103) and a taper mandrel (104), the main body of the mandrel assembly (1) is the taper mandrel (104), the taper mandrel (104) is a solid cylinder, the upper end of the taper mandrel (104) is a section of thread (102), the lower end of the taper mandrel (104) is a cone, the upper end of the thread (102) is connected with the handle (101), and the lower part of the thread (102) is connected with the screwing nut (103); the spring steel sleeve (2) is of an integrated structure, the spring steel sleeve (2) is a hollow steel pipe, the upper end of the spring steel sleeve (2) is an annular opening (201), the diameter of the opening (201) is larger than that of the spring steel sleeve (2), and an annular baffle plate (202) is arranged below the opening (201).

2. A quick de-pinning device according to claim 1, characterized in that: a hexagonal nut fixing handle (101) is arranged below the handle (101).

3. A quick de-pinning device according to claim 1, characterized in that: and waffle texture protrusions are arranged on the surface of the outer ring of the screwing nut (103).

4. A quick de-pinning device according to claim 1, characterized in that: the middle position of the spring steel sleeve (2) is provided with a plurality of round holes.

5. A quick de-pinning device according to claim 1, characterized in that: the diameter of the spring steel sleeve (2) is larger than that of the bottom surface circle of the cone at the lower end of the taper mandrel (104).