KR19990019165A - Electrode Tip Replacement Tool for Spot Welding Gun - Google Patents

Abstract

The present invention relates to an electrode tip exchange tool for spot welding gun, the tip position formed with the upper tip exchange groove (26a) and the lower tip exchange groove (26b) formed so that the upper tip (12a) and the lower tip (12b) is inserted Part 24, the tip position portion 24 is integrally coupled to the upper center, and the lower center of the operation body portion 22 of the ring shape coupled to the upper striking portion 28 integrally, and the upper striking portion While the 28 is integrally coupled to the upper end and the lower end hitting portion 36 is coupled to the lower end of the guide shaft 34 and the upper and lower guides while being inserted into the guide shaft 34, the upper hitting portion 28 And a sliding hammer part 30 having a axial insertion hole 32 formed therein in the longitudinal direction to alternately strike the lower mold hitting part 36 to fit the upper and lower shanks of the spot welding gun. The upper and lower tips are vertically in the longitudinal direction without the need for a separate auxiliary tool. It can be inserted and replaced at the same time, facilitating the replacement of the electrode tip, reducing the replacement time, and reducing the number of tools without the need for a separate auxiliary tool, while preventing the loss of the electrode tip. have.

Description

A tool for transfer an elextrode tip of spot welding gun

The present invention relates to an electrode tip exchange tool for spot welding guns, and more particularly, spot welding, which allows the corresponding upper and lower mold tips fitted to upper and lower shanks of a welding gun to be inserted and exchanged simultaneously in the vertical direction in the longitudinal direction. An electrode tip replacement tool for a gun.

In general, spot welding superimposes two base materials to be joined and places both electrode tips of a spot welder on which current is energized above the base material, and concentrates a relatively small portion through the electrode tip to concentrate current and pressing force through the electrode tip. Refers to resistance welding to join welded parts.

In addition, the spot welding gun used for spot welding, which is resistance welding, is a welding machine that stores the electrical energy required for spot welding electronically or electrostatically and then rapidly releases the spot welding, in particular for automobile body assembly. In the spot welding gun used for the line, the arm part is composed of shank and electrode tip, and forms the upper upper part and the lower lower part of the lower foot, respectively.

On the other hand, the upper and lower tips, which are the electrode tips fitted to each shank, are made of an alloy of Cu and Cr. Therefore, after a certain amount of use, periodic alternating work due to natural wear is required to maintain normal electrode tips. .

Figure 3a is an example of an exchange operation for inserting the upper electrode tip (112a) and the lower mold tip (112b) of the corresponding electrode tip to the upper and lower shank (110a) and lower shank (110b) of the spot welding gun using the hammer 120 as a hammer means As shown in the original drawing, the outer ends of each shank 110a and 110b and the inner bottom of the corresponding electrode tips 112a and 112b are tapered at a predetermined angle to form electrode tips 112a and 112b. ), The hammer tip 120 was used to replace each electrode tip 112a and 112b and inserted into the shank 110a and 110b.

However, since the space t between the upper tip 112a and the lower tip 112b is not wide, the hammer 120 is intended to fit the electrode tips 112a and 112b into the shanks 110a and 110b. The hitting motion of the electrode tip 112a, 112b and the shank 110a, 110b does not become a straight line in the vertical direction and should be inserted several times in the left and right directions at an obliquely inclined blow angle θ. There was an inconvenience, and the electrode tips 112a and 112b are inserted into the shanks 110a and 110b at the inclined blow angle θ, and if the blow angle θ is increased, the electrode tips 112a are hit. It was possible for 112b to exit and fit between the shanks 110a and 110b and get into the equipment and be lost.

3B illustrates another example of an exchange operation in which the electrode tips 112a and 112b are vertically inserted into the shank 110a and 110b of the spot welding gun by using the auxiliary tool 122 together with the striking means hammer 120. As illustrated, the hammer angle of the hammer 120 can be in the vertical direction, but the auxiliary tool 122 has to be hit several times in alternating directions from the left and right directions, and therefore, an additional auxiliary tool 122 must be prepared. there was.

Thus, the present invention is devised to solve all the inconveniences of the prior art, the upper and lower tips to be fitted to the upper and lower shank of the welding gun in the vertical direction in the longitudinal direction without using a separate auxiliary tool It is an object of the present invention to provide an electrode tip exchange tool for spot welding guns that can be inserted and replaced at the same time.

As a technical means for achieving the above object, the present invention, the tip position portion formed with the upper and lower tip exchange groove and the lower tip exchange groove so that the upper and lower tips are inserted, the tip position is integrated in the upper center It is coupled to the lower center of the operation body part of the ring shape coupled to the upper striking unit integrally, and the upper striking unit is integrally coupled to the upper end of the guide shaft and the lower striking portion is fixed to the guide shaft, A tip exchange tool is formed including a sliding hammer having a axial insertion hole formed therein in a longitudinal direction to alternately strike the upper striking portion and the lower striking portion while moving up and down.

The tip change tool made in this way can easily and easily replace the electrode tip without the need for a separate auxiliary tool, and shorten the replacement time, as well as the occurrence of the electrode tip during the replacement operation. The loss can be prevented.

1 is a structural view of the electrode tip exchange tool for spot welding of the present invention.

Figure 2 is a use state of fitting the electrode tip to the shank of the spot welding gun with a tip exchange tool according to the present invention.

Figure 3a is an illustration of fitting the electrode tip to the shank of the spot welding gun using a hammer as a hammer.

Figure 3b is another illustration of fitting the electrode tip to the shank of the spot welding gun using the striking means and the auxiliary tool.

Explanation of symbols on the main parts of the drawings

10a: Upper Shank 10b: Lower Shank

12a: Upper tip 12b: Lower tip

20: tip exchange tool 22: working body

24: tip position 26a: upper tip exchange groove

26b: Lower tip exchange groove 28: Upper hitting part

30: sliding hammer part 32: guide shaft insertion hole

34: guide shaft 36: lower hitting part

38: fixing nut

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 shows the structure of an electrode tip exchange tool for spot welding according to the present invention, and strikes the electrode tips 12a and 12b at the ends of both shank 10a and 10b of the spot welding gun at the same time. The upper tip exchange groove 26a and the lower die tip exchange groove 26b, in which the upper tip 12a and the lower tip 12b, which are the electrode tips, are inserted and placed before the operation, are symmetrical above and below the tip position 24. It is formed in the form.

The tip position portion 24 is integrally coupled to the upper center of the working body portion 22 formed in a ring shape, wherein the tip position portion 24 is provided between both shanks 10a and 10b of the spot welding gun. It is formed to a thickness such that it can be disposed.

The upper striking portion 28 is coupled to the bottom by the upper end of the guide shaft 34 integrally, the lower end of the guide shaft 34 is coupled by the fastening of the fixing nut 38, which is the fixing means (36). It is fixed.

Each electrode tip placed on the tip position portion 24 by alternately hitting the upper upper striking portion 28 and the lower lower striking portion 36 while being guided in the longitudinal direction in the guide shaft 34. The sliding hammer part 30 through which the axial insertion hole 32 is formed in the longitudinal direction is inserted and slipped so that 12a) 12b may be simultaneously fitted to the end of the corresponding shank 10a, 10b of the spot welding gun. Are movably coupled.

Figure 2 is a use state of replacing the work by inserting the upper tip (12a) and lower tip (12b) of the corresponding electrode tip at both shanks (10a, 10b) of the spot welding gun with the tip exchange tool 20 according to the present invention at the same time As shown, the upper tip 12a and the lower tip 12b in the upper tip exchange groove (26a) and the lower tip exchange groove (26b) grooves formed in the tip position portion 24 of the upper center of the working body (22) Insert and settle, and hit the sliding hammer portion 30 which is slidably coupled to the guide shaft 34 in the vertical direction to the corresponding electrode tip 12a at the ends of both shanks 10a and 10b of the spot welding gun. (12b) is inserted at the same time.

That is, the upper gripping shank 10a of the spot coarse gun for replacing the tip position part 24 of the upper center of the working body part 22 in which the upper tip 12a and the lower tip 12b, which are the electrode tips, are placed. And the upper mold coupled to the upper and lower ends of the guide shaft 34 by reciprocating the sliding hammer portion 30 of the guide shaft 34 in the vertical direction after being disposed on the same straight line between the lower mold shank 10b. By alternately hitting the striking portion 28 and the lower mold striking portion 36, the upper form tip 12a of the tip position portion 24 by the striking operation of the upper striking portion 28 of the sliding hammer 30 The lower mold tip 12b of the tip position portion 24 is operated by hitting the lower mold strike portion 36 of the sliding hammer portion 30 while being inserted into an end portion of the upper mold shank 10a. It is fitted to the end of the lower mold shank (10b), so that the sliding hammer portion 30 is through the guide shaft 34 and the upper striking portion 28 and the lower By alternately striking the striking portion 36, the upper tip 12a and the lower tip 12b are vertically perpendicular to the upper shank 10a and the lower mold 10b of the spot welding gun without a separate auxiliary tool. It can be inserted and replaced easily and accurately.

As described above, according to the spot welding gun electrode tip replacement tool according to the present invention, the replacement time of the electrode tip can be easily and accurately reduced without using a separate auxiliary tool. It provides the effect to prevent the loss of the electrode tip that can occur during the replacement operation.

Claims (1)

The tip position portion 24 and the tip position portion 24 formed with the upper tip exchange groove 26a and the lower die tip exchange groove 26b so that the upper die tip 12a and the lower die tip 12b can be inserted therein. The lower body is integrally coupled to the upper center and the upper center striker 28 is integrally coupled to the ring-shaped working body part 22, and the upper striker 28 is integrally coupled to the upper end, The lower striking portion 36 is coupled to the guide shaft 34 fixed to the coupling, and the upper and lower guides are inserted into the guide shaft 34 can hit the upper striking portion 28 and the lower striking portion 36 alternately Spot welding gun electrode tip exchange tool comprising a sliding hammer portion 30 through which the axial insertion hole 32 is formed in the longitudinal direction to the inside.