Positioner in the body in white welding tooling
The utility model relates to the positioner that is applied to the automobile welding tooling, especially a kind ofly prevents workpiece deformation, reduces the wear of work, guarantees the positioner in the body in white welding tooling of product quality.
The body in white welding is one of technology assembling essential in the car production process, the locating hole axis of part and the angled situation of assembly pickup direction after the welding often occur.Convenient for pickup, existing positioner is provided with locating rack mostly, is provided with two guide rod retractable pin mechanisms in locating rack, and promptly the piston rod with drive unit (cylinder, hydraulic cylinder) is connected to connecting plate, is fixed with two shoulder alignment pins that are used to locate on the connecting plate.During welding, the shoulder alignment pin stretches out under the driving of drive unit, and weld then the workpiece locating hole location that the pin head is passed be placed on the locating rack; After welding finished, the shoulder alignment pin was withdrawn under the driving of drive unit again, took out the welding assembly.The shoulder alignment pin is not only located in whole welding process, and its shoulder also plays the effect of supporting workpiece.When alignment pin is withdrawn, workpiece just loses the support of shoulder, if the wall of workpiece own is thin, rigidity is relatively poor, the alignment pin axis is again when imperfect confined state, just may cause workpiece deformation, alignment pin will because of with the caused by relative motion frictionally damage workpiece of workpiece, its distortion is strengthened, had a strong impact on product quality.
Summary of the invention:
The utility model is in order to solve existing in prior technology the problems referred to above, provides a kind of and prevents workpiece deformation, reduces the wear of work, guarantees the positioner in the body in white welding tooling of product quality.
Technical solution of the present utility model is: locating rack 1 is arranged, be provided with drive unit 2 in locating rack 1, be connected to connecting plate 3 with drive unit 2, connecting plate 3 is provided with alignment pin 4, locating rack 1 is provided with gripper shoe 5, and the hole of passing for alignment pin 4 pin heads 6 is arranged on the gripper shoe 5.
The utility model is to be provided with gripper shoe on locating rack, and workpiece is placed on the gripper shoe, and alignment pin stretches out under the driving of drive unit, and hole and workpiece locating hole that the pin head is passed on the gripper shoe are located, and weld then; After welding finishes, alignment pin is withdrawn under the driving of drive unit, and workpiece is still supported by gripper shoe, even the wall of workpiece own is thin, rigidity is relatively poor, the alignment pin axis is when imperfect confined state, gripper shoe also can prevent workpiece because of and alignment pin between frictional force cause distortion, thereby guaranteed size, the quality of product effectively.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment:
The specific embodiment below in conjunction with description of drawings the utility model embodiment.As shown in Figure 1: locating rack same as the prior art 1 is arranged, in locating rack 1, be provided with drive unit 2, drive unit 2 can be cylinder or hydraulic cylinder etc., be connected to connecting plate 3 with drive unit 2, connecting plate 3 is provided with two alignment pins 4, alignment pin 4 can be used the shoulder alignment pin, and locating rack 1 is provided with gripper shoe 5, and the hole of passing for alignment pin 4 pin heads 6 is arranged on the gripper shoe 5.