A lock clip pressing tool

Abstract

The invention belongs to the technical field of assembling of engines, and particularly relates to a press fitting tool for lock clamps of an engine valve mechanism. The press fitting tool comprises a press fitting body, a mandrel and a mandrel spring. The mandrel is used for expanding the clamps, and the mandrel spring is used for providing returning elasticity for the mandrel and is arranged between the press fitting body and the mandrel in a press fitting manner. The press fitting tool is characterized by further comprising clamping jaw devices and a pressing sleeve device, the clamping jaw devices on an outer circle of the press fitting body are used for automatically grabbing spring seats, the pressing sleeve device mounted in an inner hole of the press fitting body is used for controlling axial strokes of the lock clamps and comprises a pressing sleeve and an assorted pressing sleeve spring, the pressing sleeve is shorter than the inner hole of the press fitting body, the mandrel is assembled in an inner hole of the lower portion of the pressing sleeve, the pressing sleeve spring is arranged between the pressing sleeve and the press fitting body in a press fitting manner and is used for providing returning elasticity for the pressing sleeve, and shoulders for limiting the pressing sleeve to move downwards are arranged in the press fitting body. The press fitting tool has the advantages of high assembly efficiency and high qualified rate.

Description

technical field [0001] The invention belongs to the technical field of engine assembly, and in particular relates to a lock clamp pressing tool for an engine valve mechanism. Background technique [0002] In some existing domestic engine production lines, the assembly of the lock clip and spring plate of the valve mechanism still adopts manual assembly: the valve spring, spring seat, and lock clip are manually placed on the valve, and then the lock clip and spring plate are manually assembled with a manual press tool. Pressing in place, due to the reason of the press-fitting tool, the lock clip is often not assembled in place, and needs to be repaired manually again. This assembly method has low production efficiency, high labor intensity, and a low pass rate for one-time assembly. In some engine production lines with a high degree of automation, the assembly of lock clips is automated, but due to the lack of limit measures for press-fitting tools, there is still the problem...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the structure of the press-fit tool, the lock clip can only be placed in the spring seat manually, which leads to low production efficiency and high labor intensity

[0005] 2. Since the press-fitting tool does not have a limit mechanism, it is impossible to ensure that the two lock clip ribs are aligned with the valve stem ring groove at the same time, and there will be a "burst" phenomenon that the lock clip is not assembled in place, and manual repair is required, which is time-consuming and labor-intensive. cost

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