An oil seal press-fitting device for an oil pump

Abstract

The invention provides an oil seal pressing device of an oil pump, which belongs to the technical field of machinery. It solves the problems of low production efficiency and product pass rate of the existing oil seal pressing machine. The oil seal pressing device of the oil pump of this machine includes a working table, a tray, a positioning table, a pressing head, a transfer table, a transfer assembly and a driving part for driving the pressing head to move up and down. The driving part that slides the table along the worktable II. The driving part that drives the coating head to move up and down. The third. The driving part that can drive the transfer table to move to the bottom of the pressing head. Set at intervals, there is a negative pressure chamber in the press head, and the negative pressure generator is connected to the negative pressure generator through a pipeline. The function of oil seal assembly greatly improves the production efficiency and product qualification rate.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to an oil seal pressing device of an oil pump. Background technique [0002] The oil pump is an important part of the engine lubrication system. Its function is to increase the oil to a certain pressure and force it to the moving surfaces of the engine parts, so as to forcibly supply oil to the friction surfaces to achieve lubrication. In order to ensure the forced delivery performance of the oil pump, the processing of the pump cover and the pump casing requires extremely high matching accuracy. In addition, the matching seal between the oil pump shaft hole and the rotating shaft is also extremely important. [0003] The oil seal is a commonly used seal, which can isolate the parts that need to be lubricated from the processing parts in the transmission parts, so as not to let the lubricating oil leak, so it is often used for the seal between the shaft hole and the rotating shaft o...

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned oil seal press-fitting machine can realize the automatic press-fit of the oil seal, the production efficiency has been improved to a certain extent, and at the same time, the force and path of each press-fit can be controlled to be consistent through the press-fit mechanism, which has also improved the product quality to a certain extent. pass rate, but it still has the following defects: the press-fitting machine simply presses and fixes the oil seal on the pump body, and the transportation of the oil seal and the assembly between the oil seal and the pump body need to be completed manually in advance, and the degree of automation is not high. Low production efficiency

Moreover, the fixture itself is located below the press-fitting mechanism. Therefore, the loading, clamping and fixing of the pump body, and the assembly of the oil seal and the pump body need to be completed under the press-fitting mechanism, which is prone to misuse and cause the press-fitting mechanism to be released in advance. The pressure will cause damage to the operator and pose a safety hazard

At the same time, in the process of pressing the oil seal, there will be a certain amount of friction between the oil seal and the inner wall of the shaft hole after it is assembled on the shaft hole of the pump body, and the magnitude of this friction force is uncontrollable due to the influence of various objective factors. Therefore, the friction force in the circumferential direction of the oil seal is also uneven, and it is easy to cause jamming and deflection between the oil seal and the inner wall of the shaft hole during the press-fitting process due to uneven friction force, so that after press-fitting The coaxiality between the oil seal and the shaft hole cannot be guaranteed, resulting in poor sealing effect and a low pass rate of products after press-fitting. Although the press-fitting machine is equipped with a detection mechanism, it can check whether the product is qualified. It is also an existing conventional practice, but it can only detect the pump body after pressing and reject unqualified products, but it still cannot solve the problem of low pass rate of products after pressing.

Images