CN201020606Y

CN201020606Y - Welding fixture

Info

Publication number: CN201020606Y
Application number: CNU2006201445516U
Authority: CN
Inventors: 靳文萍; 康渝; 田洪生
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2006-12-31
Filing date: 2006-12-31
Publication date: 2008-02-13
Anticipated expiration: 2016-12-31

Abstract

The utility model provides a welding tool, comprising an air cylinder and a bearer, wherein the air cylinder is fixed on the bearer. The utility model is characterized in that: a hold-down device is arranged and is connected in a moveable way respectively with the bearer and the air cylinder; the hold-down device comprises a rotating arm that is respectively connected in a moveable way with the air cylinder and the bearer; an upper press piece is fixed on the rotating arm, and a lower press piece is fixed on the bearer, at a position corresponding to the upper press piece; the lower press piece has a link pore canal inside; the link pore canal is connected with a cooling device, and forms a circulation loop with the cooling device. The utility model provides press pieces and support pieces to fix the panels to be welded in a forced way, and coolant is also applied to offset the deformation caused by thermal expansion during the welding process.

Description

A kind of welding tooling

[technical field]

The utility model relates to a kind of welding tooling of welding field.

[background technology]

The welding deformation control of thin plate is one of technical barrier of welding field, factors such as the size of welding deformation amount and welding material (mother metal, wlding), welding procedure, welding method have direct relation, topic is some variations that its thermal stress causes between plate sheet welding main, the structure of thin plate is deformed, thereby have only at present by selecting reasonable welding method and welding procedure to reach little sweating heat input reducing distortion.Particularly in the automobile welding field, some has the plate deflection of appearance requirement big, directly influences surface quality, also causes the increase of repairing polishing working strength, difficulty.

[utility model content]

The purpose of this utility model is to provide a kind of and can reduces to make in welding process workpiece to produce the welding tooling of distortion because of being heated.

The utility model provides a kind of welding tooling, comprise cylinder and bearing, described cylinder is fixed on the bearing, it is characterized in that: comprise hold down gag, described hold down gag flexibly connects with bearing and cylinder respectively, and described hold down gag comprises turning arm, described turning arm flexibly connects with cylinder and bearing respectively, be fixed with upper holder block on described turning arm, the position relative with upper holder block is provided with lower lock block, and described lower lock block is fixed on the bearing.Be provided with the connected pore channel in described upper holder block or the lower lock block, connect cooling device on the described intercommunicating pore, and form closed circuit with described cooling device, cooling device can provide cooling agent to intercommunicating pore, the shape of described upper holder block and lower lock block is consistent with thin plate to be welded, when upper holder block compresses thin plate and welds, feed cooling agent at cooling device to intercommunicating pore workpiece is cooled off, can reduce the thin plate distortion.

The utility model can be used to compress the copper billet of support and cooling effect according to the difformity processing of weldment, can on original positioning fixture for welding, increase these devices, simple to operate, with low cost, not controlled by human factor, particularly for the weldment that appearance requirement is arranged in the automotive field, the utility model can reduce deflection under the prerequisite that does not influence welding quality, improve presentation quality, reduce the polishing amount of vehicle body weld seam and heat affected area, increase work efficiency.

[description of drawings]

Fig. 1 is the utility model welding tooling schematic diagram.

Fig. 2 is the utility model swing boom configuration schematic diagram.

Fig. 3 is the utility model upper holder block structural representation.

Fig. 4 is the utility model clamping support schematic diagram.

Fig. 5 is the utility model lower lock block structural representation.

Fig. 6 is the utility model lower lock block interior bone schematic diagram.

[specific embodiment]

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

Be illustrated in figure 1 as welding tooling of the present utility model, comprise cylinder 1 and bearing, described bearing comprises connecting plate 4 and runners 5, and described connecting plate 4 is fixed on the described runners 5, and cylinder 1 is connected on the connecting plate 4 by movable pin, and cylinder 1 joins with source of the gas.

The utility model also comprises hold down gag, described hold down gag comprises turning arm 6 and upper holder block 2, as shown in Figures 2 and 3, described turning arm 6 one ends link to each other with cylinder 1 by removable pin, and can under the drive of cylinder, rotate with respect to connecting plate 4, the other end is by the fixedly connected upper holder block 2 of fastening bolt, described hold down gag also comprises lower lock block 3, lower lock block 3 is fixed on the connecting plate 4 by supporting seat 10, as shown in Figure 4 and Figure 5, described supporting seat 10 is fixed on the connecting plate 4 by bolt and pin, described lower lock block 3 tightens together by bolt and supporting seat 10, supporting seat 10 can be processed according to the difformity of upper holder block 3, lower lock block 3 internal bore, as shown in Figure 6, the inlet opening is 11, apopore is 12, at first in lower lock block, open intake tunnel 13, open exhalant canal 14 again, opening another passage 15 in the side of lower lock block 3 links together intake tunnel 13 and exhalant canal 14, during welding the hole of passage 15 is blocked, described intake tunnel 13 and described exhalant canal 14 and cooling device form closed circuit, described cooling device is preferably water with cooling agent and is input to 11 li of inlet openings, flow out from apopore 12, take away the heat that welding produces, in addition, also can on upper holder block 2, the connected pore channel be set, and form water-flow circuit with cooling device; Perhaps can the connected pore channel be set simultaneously at upper holder block or lower lock block, principle is same as described above.Described cylinder 1 can drive linking arm 6 with compressing copper billet 2 actions, opens gas source switch, and hold down gag is opened, the gas source switch that closes, and hold down gag compresses weldment.Described lower lock block 3 tightens together by bolt and supporting seat 10, plays the supporting role of weldment on the one hand, cools off welded part after the water flowing on the other hand, reduces distortion.

The Surface Machining of the upper holder block 2 of the utility model hold down gag and the lower lock block 3 of cooling device becomes and thin sheet surface to be welded shape always.

Main material is Chrome zirconium copper, steel plate, round steel in the utility model, and wherein upper holder block 2 and lower lock block 3 excellent choosings are Chrome zirconium copper billet, can cool off the welding plate rapidly.

When beginning to weld, open the water circulation of lower lock block 3, open pneumatic button, hold down gag is opened, welded part 7 is placed on two covers respectively compresses on the lower lock block 3 of device, the gas source switch that closes, welded part 7 are fixed between upper holder block 2 and the lower lock block 3, use welding gun 8 to carry out welding operation, weldment is welded together.

The utility model mainly reduces distortion by two aspects: 1, the plate that will weld with back-up block that compresses of frock is forced to fix, and causes big constraint (restraint) degree, thereby reduces to be out of shape after the plate sheet welding.2, compress and back-up block water flowing cooling by giving with plate is contacted, welding is heated produces the distortion of expanding and causing to offset.To form (fast Yin the heat conduction of Wei Chrome zirconium copper by the copper billet that compresses and support of material Wei Chrome zirconium copper for the utility model, can cool off the welding plate rapidly), the copper billet Surface Machining becomes consistent shape with plate surface, can tightly fit with plate, the copper billet internal bore, water flowing circulation, copper billet link to each other with cylinder by linking arm and finish by the motion of cylinder and be adjacent to, unclamp action, and be simple to operation.

Claims

1. a welding tooling comprises cylinder and bearing, and described cylinder is fixed on the bearing, it is characterized in that: comprise hold down gag, described hold down gag flexibly connects with bearing and cylinder respectively.

2. welding tooling according to claim 1, it is characterized in that: described hold down gag comprises turning arm, described turning arm flexibly connects with cylinder and bearing respectively, on described turning arm, be fixed with upper holder block, the position relative with upper holder block is provided with lower lock block, and described lower lock block is fixed on the bearing.

3. welding tooling according to claim 2 is characterized in that: be provided with the connected pore channel in the described upper holder block, connect cooling device on the described intercommunicating pore, and form closed circuit with described cooling device.

4. welding tooling according to claim 2 is characterized in that: be provided with the connected pore channel in the described lower lock block, connect cooling device on the described intercommunicating pore, and form closed circuit with described cooling device.

5. welding tooling according to claim 2 is characterized in that: be equipped with the connected pore channel in described upper holder block and the lower lock block, connect cooling device on the described intercommunicating pore respectively, and form closed circuit with described cooling device.

6. according to any described welding tooling in the claim 2 to 5, it is characterized in that: the shape on described upper holder block and lower lock block surface is consistent with thin plate to be welded.

7. welding tooling according to claim 2 is characterized in that: be provided with supporting seat between described bearing and lower lock block, described supporting seat is fixed on the bearing, and described lower platen is fixed on the supporting seat.