Method for improving single-side spot welding quality of covering part covered edge and single-side spot welding protrusion die

A cover, unilateral technology, applied in welding equipment, manufacturing tools, resistance welding equipment, etc., can solve the problems of waste of man-hour and cost, affecting the appearance quality of the whole vehicle, deformation of the outer panel of the vehicle body, etc., to ensure the A surface Quality, easy on-site debugging, avoiding cost and labor time waste

Active Publication Date: 2021-03-09
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the inner panel and the outer panel at the welding point are completely bonded, the heat is directly transferred, causing deformation of the outer panel on the outer side of the vehicle body, which in turn affects the appearance quality of the vehicle
The deformation of the outer panel of the car body after unilateral spot welding can only be solved by on-site maintenance and grinding of the outer panel, resulting in a waste of man-hours and costs

Method used

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  • Method for improving single-side spot welding quality of covering part covered edge and single-side spot welding protrusion die
  • Method for improving single-side spot welding quality of covering part covered edge and single-side spot welding protrusion die
  • Method for improving single-side spot welding quality of covering part covered edge and single-side spot welding protrusion die

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing, the present invention will be further described:

[0031] Figure 3 to Figure 8 It shows a method for improving the quality of one-side spot welding of the cover part hemming and the specific implementation of the one-side spot welding convex mold of the present invention. Figure 3 to Figure 4 It is a schematic diagram of wrapping and unilateral spot welding of body panels in this embodiment; Figure 5 to Figure 8 It is a structural schematic diagram of a single-side spot welding convex mold in this embodiment.

[0032] Such as image 3 and Figure 4 As shown, the method for improving the unilateral spot welding quality of cover hemming in the present embodiment comprises the following steps:

[0033] Step 1, using a unilateral spot welding convex hull mold, adding a convex hull 21 to the unilateral spot welding position of the inner panel 2, and the convex hull 21 on the inner panel 2 protrudes toward the inner side ...

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Abstract

The invention relates to a method for improving the single-side spot welding quality of a covering part covered edge and a single-side spot welding protrusion die. The method is characterized by comprising the following steps that 1, a protrusion is additionally arranged at a single-side spot welding position of an inner plate by using the single-side spot welding protrusion die, and the protrusion on the inner plate protrudes towards the inner side of a vehicle body; 2, a covering part is subjected to edge covering, and after edge covering, a protrusion structure is formed on an outer plate on the inner side of the vehicle body along with the protrusion on the inner plate; and 3, single-side spot welding is conducted on the covering part covered edge. According to the method and the die,the protrusion is additionally arranged at the single-side spot welding position of the inner plate, the inner plate is isolated from the outer plate on the outer side of the vehicle body, heat cannotbe directly transmitted to the outer plate on the outer side of the vehicle body during single-side spot welding, and it is guaranteed that the outer plate on the outer side of the vehicle body doesnot deform.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to a method for improving the quality of unilateral spot welding of cover parts and a unilateral spot welding convex mold. Background technique [0002] Such as figure 1 As shown, it is the back door press-fit and hemming assembly of a car body panel under the traditional technical conditions. Such as figure 2 As shown, in order to improve the fastening of the inner and outer panels, unilateral spot welding is required on the outer panel 1 and inner panel 2 of the press-fit assembly after hemming, and the spot welding position is on the inner side of the vehicle body. During welding, a large amount of heat is generated instantaneously at the position of the solder joint to melt the outer panel on the inner side of the vehicle body, so that the outer panel on the inner side of the vehicle body adheres to the inner panel. Since the inner panel and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/11B23K11/36
CPCB23K11/11B23K11/36
Inventor 王玉成王存峰
Owner CHERY AUTOMOBILE CO LTD
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