Pressing and disassembling device for engine gudgeon pins

Abstract

The invention discloses a pressing and disassembling device for engine gudgeon pins. The device comprises a pin falling tank and a connecting pin oil immersion tank component. The device is characterized by further comprising a support frame component, a pin pressing mechanism and a pin disassembling mechanism. By the device, assembling of piston and connecting rod assemblies can be completed efficiently, and the piston and connecting rod assemblies unqualified in assembling can be disassembled in time; in addition, type stoppers of the piston and connecting rod assemblies are added to the device, assembling and disassembling of the piston and connecting rod assemblies of two different types can be completed, and the device has the advantages of high mechanical automation, high safety and the like; meanwhile, compared with the prior art, the pressing and disassembling device is simple in structure, convenient to operate and high in reliability.

Description

technical field [0001] The invention belongs to the technical field of production of engine connecting rod pistons, and in particular relates to a pressing and dismantling device for engine piston pins. Background technique [0002] The piston connecting rod assembly is the central part of the engine, and its assembly quality has a direct impact on the sealing and service life of the cylinder. The piston connecting rod assembly is generally composed of piston, piston pin and connecting rod. The connecting rod is composed of connecting rod body, connecting rod cover, connecting rod bolt and connecting rod bearing bush. The connecting rod body is divided into connecting rod small head, shaft and The big end of the connecting rod and the small end of the connecting rod are used to install the piston pin. The piston uses the piston pin to make the connecting rod drive the crankshaft to rotate, thereby converting the linear reciprocating motion of the piston into the rotary motio...

AI Technical Summary

Problems solved by technology

[0003] At present, the assembly process of the piston, connecting rod and piston pin is usually manual work. The general steps are: first, heat the piston or the small end of the connecting rod, then place the piston on the positioning plate, clean the piston pin hole, and clean the piston pin hole by hand. Push the piston pin into the piston pin hole, then push the small end of the connecting rod deep into the piston, align the piston pin with the pin hole of the small end of the connecting rod, and then hit one end of the piston pin with a wooden hammer to make the piston pin pass through the small end of the connecting rod. The head pin hole reaches the edge of the pin hole at the other end of the piston pin, and then the lock ring is inserted to complete the entire assembly. Since the tools used are scattered, and the small end of the piston or connecting rod needs to be assembled under high temperature, the assembler must move quickly and require With the assistance of multiple people, it is difficult to guarantee the assembly accuracy, the consistency is poor, and the assembly efficiency is low

[0004] Engine piston pin removal tooling (application number 200910207602.3), which discloses a tool that utilizes a jack, a base, a support plate, a guide rod and a guide rod seat to realize the removal of the engine piston pin, and it supports the piston connecting rod assembly by the guide rod seat, Insert the guide rod in the guide rod seat into the piston and contact the end face of the piston pin, and operate the jack to move the guide rod seat upwards. At this time, the jack rod will push the piston pin down and drive the guide rod into the guide hole until the piston The pin is pushed out of the piston. In the described embodiment, a jack is used to disassemble the piston pin, which has a low degree of automation and low efficiency and cannot meet the production requirements of the production line; the invention patent is based on an industrial robot-based piston, piston pin and connecting rod assembly method and device (application number 201010217225.4 ), which discloses a device that utilizes a visual camera, a computer, a mechanical gripper, an intelligent assembly table and an industrial robot to realize the assembly of pistons, piston pins and connecting rods, and recognizes the position and location of the piston, piston pins and connecting rods by the visual camera direction, the grasping position is calculated in the computer, and the manipulator grabs and puts it on the intelligent assembly platform. Under the control of the intelligent assembly platform, the industrial robot loads the piston pin into the piston pin assembly space. The degree of automation in the described embodiment High, but the device is complex and costly, which is not conducive to large-scale popularization and use; the assembly device and method of diesel engine piston pin (application number 201010134223.9), which discloses a piston pin guide assembly, push rod, gear assembly, piston sleeve assembly , the handle and the piston pin support block to realize the assembly of the piston pin of the diesel engine, it uses the piston sleeve assembly to fix the piston and the connecting rod, uses the piston pin support assembly and the piston pin guide assembly to support and guide the piston pin, and uses the handle to drive The gear assembly is used for assembly, and the piston pin is pressed into the piston connecting rod through pressure. The embodiment described has a low degree of automation, cumbersome operation, and high labor intensity, which cannot meet the requirements of the production line.

The above three related documents can only complete a certain aspect of the assembly and disassembly of the engine piston and connecting rod assembly, and cannot complete the assembly and disassembly of the engine piston and connecting rod assembly at the same time. Within the scope of the applicant's search, it has not been found that the engine piston can be completed at the same time. Documentation for Assembly and Disassembly of Connecting Rod Assemblies

Images