CN203092022U - Welding fixture positioning mechanism - Google Patents

Abstract

The utility model discloses a welding fixture positioning mechanism, which comprises a cylinder arranged at the bottom; a support block is arranged on the upper part of the cylinder, a guide block is arranged on the support block, and a guide block is arranged in the middle of the support block and the guide block. A through hole, a positioning pin driven by the piston rod of the air cylinder is slidably arranged in the guiding through hole; the upper part of the positioning pin has a two-stage stepped structure. The utility model has the advantage that by controlling the expansion and contraction of the cylinder piston rod, the two steps on the upper part of the positioning pin can be respectively equal to the upper surface of the guide block, and the positioning of the two parts can be completed through the two different diameters.

Description

Welding Fixture Positioning Mechanism

technical field

The utility model relates to an automobile welding fixture, in particular to a welding fixture positioning mechanism.

Background technique

The development trend of the world's automobile technology has shifted from mass production to multi-variety and small-batch production. In order to meet the diverse needs of automobile consumers, automobile companies are constantly shortening the model development cycle and speeding up model updates; the body-in-white welding adopts a welding line Mixed flow production of two or more models, such a welding line body has the characteristics of short development time, low investment cost, and high production efficiency. However, at the same time, the welding fixture requires that the positioning of different parts can be automatically switched, which has become an urgent problem for automobile manufacturers.

Contents of the invention

The purpose of the utility model is to provide a welding fixture positioning mechanism that can automatically switch between different parts.

In order to achieve the above object, the utility model can take the following technical solutions:

The welding fixture positioning mechanism described in the utility model includes a cylinder provided at the bottom; a support block is provided on the upper part of the cylinder, a guide block is provided on the support block, and guide passages are provided in the middle of the support block and the guide block. A positioning pin driven by the piston rod of the air cylinder is slidably arranged in the guiding through hole; the upper part of the positioning pin has a two-stage stepped structure.

The utility model has the advantage that by controlling the expansion and contraction of the cylinder piston rod, the two steps on the upper part of the positioning pin can be respectively equal to the upper surface of the guide block, and the positioning of the two parts can be completed through the two different diameters.

Description of drawings

Fig. 1 is the structural representation when the utility model cylinder stretches out.

Fig. 2 is a structural schematic diagram of the utility model when the cylinder is retracted.

Detailed ways

As shown in Figures 1 and 2, the welding fixture positioning mechanism described in the present invention includes a cylinder 1 provided at the bottom; a support block 2 is provided on the top of the cylinder 1, and a guide block 3 is provided on the support block 2 , in the middle of the support block 2 and the guide block 3, a guide through hole is provided, and a positioning pin 5 driven by the piston rod 4 of the cylinder 1 is slidably arranged in the guide through hole; the upper part of the positioning pin 5 is two step structure.

Its working principle is: by controlling the cylinder 1, the piston rod 4 of the cylinder 1 is extended, the lower step of the positioning pin 5 reaches the position accuracy set by the part 6, the diameter of the lower step matches the hole of the part 6, and the part 6 is completed. The positioning; the piston rod 4 of the cylinder 1 retracts, driving the positioning pin 5 to retract into the guide block 3, the upper step of the positioning pin 5 reaches the position accuracy set by another part 7, and the diameter of the upper step is the same as the hole of the part 7 Matched, the positioning of another part 7 has been completed.

Claims (1)

1. A welding fixture positioning mechanism, including a cylinder (1) set at the bottom; it is characterized in that: a support block (2) is provided on the upper part of the cylinder (1), and a guide is provided on the support block (2) The block (3) is provided with a guide through hole in the middle of the support block (2) and the guide block (3), in which the piston rod (4) driven by the cylinder (1) is slidably arranged. The positioning pin (5); the upper part of the positioning pin (5) has a two-stage stepped structure.

Images