Hang-up prevention assembly fixture

Abstract

The invention discloses a hang-up prevention assembly fixture comprising a PLC, and a hang-up prevention mechanism. The hang-up prevention mechanism is arranged at the front portion of a ball-pin locating seat and comprises a neck detecting fork, a thread detecting fork, a neck detecting fork connecting block, a neck detecting fork sliding block and so on; if the neck of a ball pin is matched, when the neck detecting fork sliding block drives the neck detecting fork to move forward on one guide rail, and a detecting U-shaped opening of the neck detecting fork is clamped at the ball-pin neck position; and if the diameter of a thread of the ball pin is matched, when the thread detecting fork sliding block drives the thread detecting fork to move forward on the other guide rail, and a detecting U-shaped opening of the thread detecting fork is clamped at the ball-pin thread position. Signal is received by detecting plates through sensors and the PLC to control and process a follow-up work;if the neck of the ball pin is not matched with the thread of the ball pin, the detecting plates are not detected by the sensors, the signal is received by the PLC to control hang-up prevention. A hang-up prevention of the combination of the hang-up prevention assembly fixture and a PLC control system for similar products is adopted, various kinds of product installation on a device at the same time is achieved, and accuracy and error free of products assembly can be ensured; installation and adjustment are convenient and efficient, and assembly devices of products are saved; production taktis reduced, and production efficiency is enhanced; and structure is simple and compact, and machining is easy.

Description

technical field [0001] The invention belongs to the technical field of tooling, and relates to an error-proof assembly tool; it is especially suitable for distinguishing error-proof assembly of automobile ball hinge connecting rods with similar products, different models, and changes in external dimensions. Background technique [0002] The assembly of the automobile ball hinge connecting rod is an important link in the assembly of many parts of the automobile, and the same equipment is often assembled with various types of ball hinge connecting rods. The appearance of each type of ball hinge is very similar and difficult to identify with the naked eye. [0003] Although the material will be cleaned every time the model is changed, it cannot completely avoid assembly errors caused by misplaced parts and mixed incoming materials. [0004] The ball hinge connecting rod is a functional part related to the stability of the car movement. Once the matching is wrong, the consequenc...

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