JP3322365B2 - Chip changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tip changer for attaching a tip of a welding gun device for a robot to a shank of the welding gun.

[0002]

2. Description of the Related Art When a chip of a welding gun device for a robot is worn or damaged, it is necessary to replace the chip. Therefore, a tip newly attached to the welding gun is disposed in the tip supply gutter, and the shank of the welding gun is vertically set by a robot toward the shank insertion hole of the tip at the tip of the gutter. Lower or raise, insert the shank into the shank insertion hole of the chip, mount the chip on the shank, and then complete the mounting of the new chip by vertically raising or lowering the shank of the welding gun by the robot. Was. Then, when the chips in the chip supply gutter are taken out by the attachment of the chips, the chips in the gutter are sequentially moved toward the tip of the gutter.

[0003]

In the prior art as described above, the chips move within the chip supply gutter, so that there is no particular problem with coaxial chips. In the case of an eccentric chip, the insertion direction to the shank is determined, so if the chip moves in the chip supply gutter, the insertion direction to the shank will not be constant, so accurate mounting on the shank will not be possible. There's a problem.

[0004] The present invention has been made in view of the above-mentioned problems of the conventional technology, and an object of the present invention is to provide a chip supply device that eliminates movement of a chip in a chip supply device. An object of the present invention is to provide a chip changer in which a newly mounted chip can be accurately mounted on a shank by moving the chip magazine itself.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
In addition, the tip changer according to the present invention has two pillars.
There is a step on the side ofPlace fixed mounting plate
The tip magazines can slide on both mounting plates.
Attach the holder and place one of the mounting plates on
A guide plate and a kick plate are juxtaposed in a row.
Install the guide plate and kit on the mounting plate in parallel with the lower surface of the holder.
The feature is that the plates are juxtaposed.

[0006] According to a second aspect of the present invention, the mounting plate is fixed by providing a vertical step on two orthogonal side surfaces of the column.

According to a third aspect of the present invention, the mounting plate is fixed by providing a vertical step on two parallel side surfaces of the column.

[0008]

The chips to be newly mounted are respectively held in the chip magazines, and the chip magazines are moved so that the first chips are sequentially mounted on the shank of the welding gun.
In the chip magazine slidably held by the holder attached to one of the mounting plates, a large number of eccentric chips are held with the shank insertion hole opened downward, and the chip magazine is The tip of the tip is guided by a guide plate near the tip of the holder, and the tip of the tip is pressed by a kick plate. Each time the foremost chip is taken out, the chip magazine moves and the head of the next chip is pressed by the kick plate. Also, in the chip magazine slidably held by the holder attached to the other mounting plate, a large number of eccentric chips are held with the shank insertion hole opened upward, and this chip magazine has The tip of the tip is guided by a guide plate near the tip of the holder, and the tip of the tip is supported by a kick plate. Each time the foremost chip is taken out, the chip magazine moves and the head of the next chip is kick-played.
To be supported by

[0009] The tip magazine has two pillars.
It is slidably mounted on a holder attached to a mounting plate fixed with a step on the two sides up and down. Does not hinder vertical movement.

[0010]

An embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a support for supporting a chip changer, and mounting plates 4 and 5 are fixed to two side surfaces 2 and 3 of the support 1 with a vertical step. Then, holders 8 and 9 on which the chip magazines 6 and 7 can slide, respectively, are mounted on the two mounting plates 4 and 5.

A guide plate 10 and a kick plate are provided on one of the mounting plates 4 in parallel with the upper surface of the holder 8.
G are mounted side by side. A large number of eccentric chips 12 are held in the chip magazine 6 slidably disposed in the holder 8 with the shank insertion holes 13 opened downward. The tip of the chip is guided by the guide plate 10 near the foremost part of the chip, and the head of the foremost chip 12 ′ is pressed by the kick plate 11. The body of the foremost tip 12 ′ is stopped by a stopper 14 disposed at the tip of the holder 8.

A guide plate 15 and a kick plate are provided on the other mounting plate 5 in parallel with the lower surface of the holder 9.
16 are mounted side by side. A large number of eccentric chips 17 are held in the chip magazine 7 slidably disposed in the holder 9 with the shank insertion hole 18 opened upward. The tip of the chip is guided by the guide plate 15 near the foremost part of the chip, and the head of the foremost chip 17 ′ is supported by the kick plate 16. The body of the foremost tip 17 ′ is stopped by a stopper 19 disposed at the tip of the holder 9.

A handle 20 is attached to the rear end of the tip magazine 6, and a string 21 having one end connected to the lower end of the handle 20 includes a pulley 22 and a bar 23 attached to the mounting plate 4. Has a weight 25 at the other end via a pulley 24 attached to the tip of the body. A handle 26 is also attached to the rear end of the tip magazine 7, and a string 27 having one end connected to the lower end of the handle 26 is attached to the mounting plate 5.
A weight 31 is provided at the other end via a pulley 28 attached to the tip of a bar 28 and a pulley 28 attached to a bar.

In the chip changer having the above-described structure, the chip 12 to be newly attached is held in the chip magazine 6, and the first chip 12 'is provided.
Is stopped by the stopper 14, the tip of one shank (not shown) of the welding gun is raised toward the insertion hole 13 of the tip 12 ', and while the tip 12' is attached to the shank, the tip 12 ' The head is held down by the kick plate 11, so that its mounting is ensured. When the attachment of the tip 12 ′ to the shank is completed, the shank is lowered, and the tip 12 ′ is taken out from the tip magazine 6. With the removal of the chip 12 ', the function of the stopper 14 is temporarily stopped, and the chip magazine 6 moves until the head of the next chip is pressed by the kick plate 11, and the body of the chip moves to the stopper 14
Then, the movement of the tip magazine 6 stops. The movement of the chip magazine 6 is performed by the urging force of the weight 25.

Further, the tip 17 to be newly attached is held in the tip magazine 7, and the tip 17 'of the tip is stopped by the stopper 19, and the other shank (not shown) of the welding gun is used. Tip 1
While the tip 17 ′ is lowered toward the insertion hole 18 and the tip 17 ′ is attached to the shank, the head of the tip 17 ′ is supported by the kick plate 16, so that the attachment is securely performed. When the attachment of the tip 17 'to the shank is completed, the shank is pulled out in the horizontal direction, and the tip 17' is taken out of the tip magazine 7. By removing the chip 17 ′, the function of the stopper 19 is temporarily stopped, and the chip magazine 7 moves until the head of the next chip is supported by the kick plate 16, and the body of the chip is stopped by the stopper 19. And the movement of the tip magazine 7 stops. The movement of the chip magazine 7 is performed by the urging force of the weight 31.

The tip magazines 6 and 7 are slidably mounted on holders 8 and 9 mounted on mounting plates 4 and 5 which are fixed to the two side surfaces 2 and 3 of the support columns by providing a vertical step. Since they are arranged, a sufficient interval is maintained between the foremost tips 12 'and 17' in the up, down, left and right directions, so that there is no hindrance to the up and down movement of the welding gun. In addition,
The mounting plates 4 and 5 are fixed by providing steps on the two side surfaces 2 and 32 of the support column, and chip magazines 6 and 7 are installed in parallel with the mounting plates 4 and 5 via holders 8 and 9. Can also perform a similar function.

[0017]

According to the present invention, the chips in the chip magazine to be newly attached do not move in the chip magazine, but move in the chip magazine itself. A tip changer that can be supplied while being maintained and that can be securely attached to the shunt in the correct orientation.

Since there is a sufficient space between the chips to be taken out, the tip changer does not hinder the movement of the welding gun when taking out the chips.

[Brief description of the drawings]

FIG. 1 is a plan view of a chip changer according to the present invention.

FIG. 2 is a view as viewed in the direction of the arrows in FIG. 1;

FIG. 3 is a view taken in the direction of the arrow in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Prop 2,3 Side 4,5 Mounting plate 6,7 Chip magazine 8,9 Holder 10,15 Guide plate 11,16 Kick plate 12,17 Chip

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B23K 11/30 B23Q 3/155

Claims (3)

(57) [Claims] 1. A tip changer for attaching a tip of a welding gun device for a robot to a shank, comprising a mounting plate fixed by providing a step on the two side surfaces of a support column.
Arranged , mounted on each mounting plate is a holder on which the chip magazine can slide, and on one mounting plate, a guide plate and a kick plate are juxtaposed in parallel with the upper surface of the holder, and on the other mounting plate, A chip changer comprising a guide plate and a kick plate juxtaposed in parallel with the lower surface of a holder. 2. The chip changer according to claim 1, wherein the mounting plate is fixed to the two orthogonal side surfaces of the column by providing a vertical step. 3. The chip changer according to claim 1, wherein the mounting plate is fixed to the two parallel side surfaces of the column by providing a vertical step.