CN103128443A

CN103128443A - Clamping method suitable for laser welding of galvanized steel sheet

Info

Publication number: CN103128443A
Application number: CN2011103864789A
Authority: CN
Inventors: 金文基
Original assignee: SANHE SHIYUAN AUTOMOBILE TECHNOLOGY Co Ltd
Current assignee: SANHE SHIYUAN AUTOMOBILE TECHNOLOGY Co Ltd
Priority date: 2011-11-29
Filing date: 2011-11-29
Publication date: 2013-06-05

Abstract

The invention relates to a clamping method suitable for laser welding of a galvanized steel sheet, when other material in a bending shape is welded on flat-plate material which is formed by galvanized steel sheet material and used for automobile components, in order to discharge zinc steam generated by fusion of the galvanized steel sheet easily, a gap of about 0.1-0.2mm width is formed between the material in a welding position. The clamping method suitable for the laser welding of the galvanized steel sheet is characterized by comprising a tight contact part and a pressing part, the tight contact part is the part where the pressed plate cut material begins to contact with bending material when a clamp used for pressing is formed, and the pressing part is bent downwards to exceed the plate cut material at the end of the bending material to be welded, so that the gap between the plate cut material and the bending material is formed. Therefore, when the welding is carried out, the plate cut material and the bending material just need to be clamped by the clamp to form an even gap naturally.

Description

Be applicable to the clamping method of galvanized steel plain sheet laser weld

Technical field

The present invention relates to a kind of clamping method, especially a kind of clamping structure that is applicable to the galvanized steel plain sheet laser weld, when welding sweeping other materials on the plate material that is used for automobile component and is consisted of by the galvanized steel plain sheet material, for easily discharging the zinc fume that the galvanized steel plain sheet melting produces, form the gap of 0.1 ~ 0.2mm left and right between the material of welding position.

Background technology

As everyone knows, laser weld is to the position of wish welding so that after the moment melting of welding position with high-octane laser beam irradiation, mobile laser beam makes the heat around the welding position disappear and solidify, method with this welding material, and the advantage during the laser weld galvanized steel plain sheet is to form the gap of 0.1 ~ 0.2mm between the welding position of two galvanized steel plain sheets.

In addition, when utilizing two galvanized steel plain sheet materials of above-mentioned method for laser welding welding, because making the welding position melting of galvanized steel plain sheet, the laser beam that shines produces zinc fume, if and above-mentioned zinc fume can not be discharged from the welding position, will cause to weld the problems such as galvanized steel plain sheet or weld defect, therefore need easily to discharge the condition of zinc fume.

Therefore in the prior art, make after the welding position of a side zinc plated steel plate material give prominence to and is close to the welding position that the other side's material gives prominence to, be fixed and complete welding to the welding position illuminating laser beam with the clip of fixture.

But, the position of galvanized steel plain sheet material wish welding is given prominence to and be close to the other side's material and when forming the gap, because welding around pressurization part or pressurization part, be difficult to keep the gap of suitable size on structure, and corresponding pressurization part is welded because of need, therefore can not form clip in pressurization part, and be difficult to regulate the gap by the pressurization to galvanized steel plain sheet on clip structure.

And, also need to form in advance the technique of bend on the material of wish welding during welding, increase manufacturing cost, and the bend after welding is difficult to keep original shape and deforms, reduce the uniformity of welding quality, improve the failure welding rate.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art and a kind of clamping structure that is applicable to the galvanized steel plain sheet laser weld is provided, during two galvanized steel plain sheet materials of and curved shape plate in laser weld, make the zinc fume that results from the welding position be easy to discharge, thereby when simplifying technique, complete high-quality, welding that uniformity is high, especially in the suitable gap of self-assembling formation, the welding position of galvanized steel plain sheet material.

For achieving the above object, the invention provides a kind of clamping method that is applicable to the galvanized steel plain sheet laser weld, do not form the structure that bend etc. is used for keeping the gap on any side zinc plated steel plate material, it is characterized in that, comprise: adherence section, when clip is used in the formation pressurization, the part that pressure strip shaped material and bend begin to press close to; Pressurization part is bent downwardly the template material that surpasses the bend end portion of welding, thereby produces and the bend gap; Thereby when welding, only need with clamp template material and bend, with regard to the self-assembling formation uniform gap.

According to the present invention, on the welding position of template material that galvanized steel plain sheet consists of and bend, the required gap of zinc fume that discharge is produced by laser weld, can be by the clamping self-assembling formation, need not to keep independently technique or the device at interval, only can form suitable gap by clamping, thereby reduce manufacturing cost, can keep all the time evenly gap accurately, improve the quality of welding product.

In addition, because be to exert pressure by the clamping limit to be deformed into the mode in gap, therefore can repair within the specific limits the bad problem of moulding of template material and bend self.

Description of drawings

Fig. 1 is state diagram before effect of the present invention;

Fig. 2 is active state profile of the present invention;

Fig. 3 is the oblique view of Fig. 2;

Fig. 4 is the details drawing of Fig. 2.

Description of reference numerals

1: template material 2: bend

2 ': flange portion 10: clip (top)

10a: clip (bottom) 12: welding hole

13:

pressurization part

14,14a: pressurization part.

The specific embodiment

Below, by reference to the accompanying drawings the specific embodiment of the invention is elaborated.

Fig. 1 is state diagram before effect of the present invention; Fig. 2 is active state profile of the present invention; Fig. 3 is the oblique view of Fig. 2; Fig. 4 is the details drawing of Fig. 2.

The present invention relates to each template material 1 that is consisted of by galvanized steel plain sheet of welding and the two ends flange portion 2' of bend 2, thereby form the process of one-piece type automobile component.

At first, when moulding bend 2, in the part that two end flanges 2 ' ends will weld, be as the criterion with level and be separated by 0.1 ~ 0.2mm left and right to top and form tilted shape.

In addition, consisting of when clamping up and down the flange portion 2 ' of bend 2 and clip 10 that the template material makes its adherence up and down, 10a, upper clamp 10 has welding hole 12 and respectively forms two

pressurization part

12,14,14a in both sides, and in one side pressurization part 13, the part that begins to contact for clamping plate shaped material 1 and adherence section 2 ', flange portion 2 ' to template material 1 and bend 2 thereon moves a certain distance, and forms the active force that mutually pushes away.

Adopt different outstanding length at the end pressurization part 14 of both

sides clip

10,10a, 14a, outside pressurization part 14 length of its upper clamp 10 are greater than inboard pressurization part 13, thereby make the pressurization part 14 lower platen shaped materials 1 of upper clamp 10; And the outside pressurization part 14a of bottom clip 10a shortens the length of pressurization part 14 prolongations that are equivalent to upper clamp 10, thereby in the position lower than level, the flange portion 2 ' of clamping plate shaped material 1 and bend 2.

Each outside pressurization part 14 of upper clamp 10 and bottom clip 10a, the degree of 14a lower platen shaped material 1 bending, (at a distance of the flange portion starting position approximately 10 ~ 12mm), form the gap of 0.1 ~ 0.2mm left and right between template material 1 and flange portion 2 ' in flange portion 2 ' and template material 1 soldered position.

The process of completing welding under above-mentioned state is that adherence template material 1 and bend 2 are contacted with under the state of template material 1 flange portion 2 ', utilize top and the

bottom clip

10,10a to begin to clamp.

The part that the inboard pressurization part 13 of top and the

bottom clip

10,10a begins each lower platen shaped material 1 and flange portion 2 ' to contact, and be subjected to its pressure flange section 2 ' will be crooked to level from the state that tilts a little.

In addition, the outside pressurization part 14 of top and the

bottom clip

10,10a, 14a are with clamping plate shaped material 1, and because of length different

outside pressurization part

14,14a contact make clamping plate shaped material 1 the position lower than level, thereby form the downward-sloping state of template material 1 level, form the gap of 0.1 ~ 0.2mm between the flange portion 2 ' of welding position and template material 1.

Under such state, carry out laser weld by welding hole 12 and welding groove 11, can utilize laser that flange portion 2 ' and template material 1 are become one, and the zinc fume that produces in welding process is expelled to the outside by the gap.

Complete and weld and make top and the bottom clip 10, the 10a releasing clamping force that resets, can be by the spring return original state of flange portion 2 ' and template material 1 self, thereby make template material 1 become level, flange portion 2 ' is a little to the state of upper angled, complete weld job with this.

By the invention described above welding method, need not to keep independent structure, material or the technique in gap, only by utilizing top and the

bottom clip

10,10a to clamp, can form between flange portion 2 ' and template material 1 and discharge zinc fume required uniform gap, not only improve the uniformity of weld job, and cost and the time of saving weld job, improve productivity and price competitiveness.

In addition, inboard pressurization part 13 each lower platen shaped material and flange portion clampings simultaneously at top and the

bottom clip

10,10a, and weld under the state of outside pressurization part 14, a 14a fixed head shaped material 1, therefore can keep uniform gap, even template material 1 and bend 2 become inhomogeneous or are in case of bending or the deformation state that exceeds error range when processing or operations for forming, also can repair and weld by the clamping of top and the

bottom clip

10,10a, thereby can complete more uniform weld job and production.

The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.

Claims

1. clamping method that is applicable to the galvanized steel plain sheet laser weld will welded each template material (1) that is made of galvanized steel plain sheet and the two ends flange portion (2') of bend (2), thereby formed in the process of one-piece type automobile component,

Consisting of when clamping up and down the flange portion (2') of bend (2) and the clip that the template material makes its adherence up and down (10,10a), respectively forming two pressurization part (12,14,14a) in both sides,

And in one side pressurization part (13), the part that begins to contact for clamping plate shaped material (1) and adherence section (2 '), flange portion (2 ') to template material (1) and bend (2) thereon moves a certain distance, and forms the active force that mutually pushes away

Make outside pressurization part (14) length of upper clamp (10) greater than inboard pressurization part (13), thereby make pressurization part (14) the lower platen shaped material (1) of upper clamp (10);

The crooked degree of each outside pressurization part (14,14a) lower platen shaped material (1) of upper clamp (10) and bottom clip (10a), in flange portion (2 ') and template material (1) soldered position, form the gap of 0.1 ~ 0.2mm left and right between template material (1) and flange portion (2 ').