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A lower electrode for projection welding with cooling device

A cooling device and electrode technology, which is applied in the field of projection welding machine parts, can solve the problems of short electrode life and poor electrode cooling effect, and achieve the effect of eliminating electrode wear or life reduction, efficient heat dissipation and cooling, and improving the quality of projection welding

Inactive Publication Date: 2016-01-27
ZHEJIANG HAOQING AUTOMOBILE MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention mainly solves the technical problems of poor cooling effect and short electrode life of ordinary water-cooled projection welding electrodes; it provides a lower electrode for projection welding with a cooling device with high cooling efficiency and long electrode life

Method used

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  • A lower electrode for projection welding with cooling device
  • A lower electrode for projection welding with cooling device
  • A lower electrode for projection welding with cooling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: a kind of lower electrode of projection welding with cooling device in this embodiment 1, such as figure 1 As shown, it includes an electrode body made of chrome-zirconium copper and a ceramic positioning pin 1 installed in the electrode body. The electrode body is cylindrical and includes a base 3 and an electrode cap 4 with an integrated structure. The side of the base is designed with a symmetrical clamping profile. The bottom of the base is provided with an electrode interface 2, which is connected to the projection welding machine; a cooling device is designed in the electrode body, including a cooling channel designed in the electrode cap and a water inlet pipe 5 and an outlet pipe 6 respectively connected to the cooling channel in the base , the water inlet pipe is L-shaped, the water inlet of the water inlet pipe is opened on the side wall of the base, the water inlet joint 7 is installed on the water inlet joint, and the water supply pipe 9 for ext...

Embodiment 2

[0024] Embodiment 2: a kind of projection welding lower electrode with cooling device of this embodiment 2, as figure 2 As shown, it includes the electrode body made of chrome-zirconium copper and the ceramic positioning pin installed in the electrode body. A cooling device is designed in the electrode body, including the cooling channel designed in the electrode cap and the water inlet and outlet pipes in the base. A one-way valve 11 is respectively installed in the water pipe and the water outlet pipe. The direction of the one-way valve is consistent with the direction of the water flow. The one-way valve can prevent the cooling water flow from flowing backwards, and the cooling water flow will not be blocked when the cooling water is overheated and vaporized. To reduce the flow rate and flow rate of the cooling water flow to ensure that the electrodes are fully cooled, the other parts of this embodiment 2 are similar to the corresponding parts of the embodiment 1, and will ...

Embodiment 3

[0025] Embodiment 3: a kind of projection welding lower electrode with cooling device of this embodiment 3, such as image 3 As shown, it includes an electrode body made of chromium-zirconium copper and ceramic positioning pins installed in the electrode body, a cooling device is designed in the electrode body, and a separator 13 perpendicular to the bottom surface of the hollow cavity is designed. The inner side walls of the hollow cavity are connected, and the top of the partition extends to the bottom surface of the concave hole and is connected with the bottom surface. The partition divides the bottom space of the hollow cavity into two semicircular chambers that are open at the top and communicate with each other. The water inlet and the water outlet of the outlet pipe are respectively designed in different chambers. The cooling water flows into one chamber of the hollow chamber through the water inlet pipe, and circulates through the partition to the other chamber and is ...

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Abstract

The invention discloses a bottom projecting welding electrode with a cooling device. The bottom projecting welding electrode comprises an electrode body, a ceramic positioning pin, a cooling channel, a water inlet pipe and a water outlet pipe. The ceramic positioning pin and the cooling device are arranged inside the electrode body, the cooling channel is arranged inside an electric cap and the water inlet pipe and the water outlet pipe are arranged in a base. A cooling water source is connected with the outer side of the water inlet pipe, and the water inlet pipe and the water outlet pipe are respectively provided with a check valve. By the cooling device arranged inside the electrode body, efficient heat dissipation and cooling of the electrode can be achieved, abrasion or service life reduction of the electrode due to overheating during high-intensity projecting welding are eliminated; the check valves can prevent water from flowing back, so that reduction of flow rate and flow quantity caused by blockage of the cooling water overheat and vaporized is avoided, and sufficient cooling of the electrode is guaranteed; and the positioning pin made of ceramic materials reduces threaded shunt of projecting welding currents, and projecting welding quality is improved.

Description

technical field [0001] The invention relates to a projection welding machine part, in particular to a projection welding lower electrode with a cooling device capable of efficiently dissipating heat and having a long electrode life. Background technique [0002] There are various welding methods in the production process of modern automobiles to meet the welding of parts and accessories, among which projection welding is one of the means in the welding process. As one of the important accessories of projection welding machine, the projection welding electrode, its design , Manufacturing is the key factor that affects whether the projection welding process can be applied well. Since the projection welding electrode is under pressure and current during the working process, the working conditions are quite complicated, the working time is short, the welding current is large, and a large amount of heat is generated during the work, so The electrode material, form, working end fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K11/30B23K11/36
Inventor 叶钦鸿潘巨林
Owner ZHEJIANG HAOQING AUTOMOBILE MFG CO LTD
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