Pin extractor

Abstract

The invention discloses a pin extractor, and mainly relates to the technical field of machinery. The pin extractor comprises an outer shell, wherein an inner shell is arranged inside the outer shell; an opening corresponding to the inner shell is formed in one end of the outer shell; a supporting barrel is arranged at one end, which is far away from the opening, of the inner shell; a through hole matched with the supporting hole is formed in one end, which is far away from the opening, of the outer shell; a screw rod is arranged in the supporting barrel; a handwheel is arranged at one end of the screw rod, and a supporting rod is arranged at the other end of the screw rod; a supporting block is arranged on the supporting rod; a hinge shaft is arranged on one side, which is far away from the supporting rod, of the supporting block; a first wedge-shaped chuck and a second wedge-shaped chuck are arranged on the hinge shaft; a thread sleeve is arranged on the supporting barrel in a sleeving manner; and a rotating arm is arranged on the outer wall of the thread sleeve. The pin extractor has the beneficial effect that removal of a pin from a blind hole can be quickly completed; the pin extractor is easy to operate and convenient to use; the working efficiency can be improved; and damage to a straight pin and a part for installing the straight pin can be avoided.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to a pin ejector. Background technique [0002] In the field of machinery, pins are widely used in various molds and equipment, and can play the role of positioning or connection. Cylindrical pins are commonly used pins, which are mostly installed on parts through interference fit. Cylindrical pins can be divided into It is a cylindrical pin with a threaded hole and a cylindrical pin without a threaded hole. The cylindrical pin with a threaded hole can be removed with a bolt suitable for the threaded hole. For the cylindrical pin without a threaded hole, due to the The installation hole of the pin is different, and its disassembly method is also different. On different parts, due to the design requirements, the installation hole of the cylindrical pin has two types: through hole and blind hole. For the through hole type installation hole, it can be used The punch punches out the ...

AI Technical Summary

Problems solved by technology

[0002] In the field of machinery, pins are widely used in various molds and equipment, and can play the role of positioning or connection. Cylindrical pins are commonly used pins, which are mostly installed on parts through interference fit. Cylindrical pins can be divided into It is a cylindrical pin with a threaded hole and a cylindrical pin without a threaded hole. The cylindrical pin with a threaded hole can be removed with a bolt suitable for the threaded hole. For the cylindrical pin without a threaded hole, due to the The installation hole of the pin is different, and its disassembly method is also different. On different parts, due to the design requirements, the installation hole of the cylindrical pin has two types: through hole and blind hole. For the through hole type installation hole, it can be used The punch punches out the cylindrical pin from one end of the through hole, and for the blind hole type mounting hole, since the exposed part of the cylindrical pin outside the component is very short, generally not more than 5mm, it is difficult to use tools such as pliers. Pulling out the cylindrical pin. At present, in order to solve the problem of pulling out the cylindrical pin in the blind hole, a bolt is often welded on the exposed part of the cylindrical pin, and the cylindrical pin is pulled out by pulling the bolt. The operation is extremely complicated and the efficiency is low. And during the welding process, it will cause certain damage to the parts where the cylindrical pin is installed

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