Oil seal press mounting device for oil pump

Abstract

The invention provides an oil seal press mounting device for an oil pump and belongs to the technical field of machinery. By means of the oil seal press mounting device for the oil pump, the problem that production efficiency and the product qualification rate of an existing oil seal press mounting machine are low is solved. The oil seal press mounting device for the oil pump comprises a working table, a tray, a locating table, a press mounting head, a transferring table, a transferring assembly and a first driving part for driving the press mounting head to move up and down. The working tableis further provided with a second driving part, a third driving part and a fourth driving part. The locating table can be driven to slide along the working table by the second driving part, a coatinghead is driven to move up and down by the third driving part, and the transferring table can be driven to move below the press mounting head by the fourth driving part. The coating head and the pressmounting head are arranged in a spaced manner in the moving direction of the locating table. A first negative pressure cavity is formed in the press mounting head, and the first negative pressure cavity is connected with a negative pressure generator through a pipeline. According to the oil seal press mounting device for the oil pump, a working procedure of applying lubricating oil is added before an oil seal is assembled and press-mounted; and in addition, the press mounting head has functions of pressing the oil seal and assembling the oil seal, and efficiency of production and the qualification rate of products are improved greatly.

Description

Technical field [0001] The invention belongs to the technical field of machinery and relates to an oil seal press-fitting 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, thereby forcibly supplying 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 housing requires extremely high matching accuracy. In addition, the matching and sealing of 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 in the transmission parts from the processing parts, so as not to let the lubricating oil leak, so it is often used for sealing between the shaft hole of the oil pump and the...

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.

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