KR20160032873A - Apparatus For Shutting Off Cooling Water Of Welding Gun - Google Patents
Apparatus For Shutting Off Cooling Water Of Welding Gun Download PDFInfo
- Publication number
- KR20160032873A KR20160032873A KR1020140123534A KR20140123534A KR20160032873A KR 20160032873 A KR20160032873 A KR 20160032873A KR 1020140123534 A KR1020140123534 A KR 1020140123534A KR 20140123534 A KR20140123534 A KR 20140123534A KR 20160032873 A KR20160032873 A KR 20160032873A
- Authority
- KR
- South Korea
- Prior art keywords
- cooling water
- welding gun
- water inlet
- cylinder
- valve
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
Description
BACKGROUND OF THE
Robot welders are widely used for spot welding between steel plates or steel plates and structural members in automobile body welding lines and the like. Robot welder is an essential equipment in automobile assembly line because it can perform various motions according to program and work quickly. The tip of the welding gun of the robot welder is fitted with a tip. The tip is a consumable product that needs to be replaced periodically because it is worn according to usage because it is a discharge area.
The inside of the welding gun is supplied with cooling water for cooling the heated tip.
The fingers of the tip and weld gun are press-fit to allow easy replacement. That is, in the conventional welding gun, tapers are formed on the outer peripheral surface of the finger of the welding gun and the inner peripheral surface of the tip hole. Therefore, when the tips of the welding gun are inserted into the fingers, they are tightly coupled, and when the tip is rotated a little, they are easily separated.
Since the replacement work of the tip is not so difficult, conventionally, it has been dependent on the manual operation of the operator. In some cases, the tip is exchanged by a mechanical method as proposed by the present inventor.
On the other hand, when changing the tip, the cooling water supplied to the welding gun must be shut off by a valve such as a water valve. Otherwise, coolant will continue to flow through the open end of the weld gun during tip exchange. Consequently, even when the welding gun tip is exchanged by a mechanical means, the operator must perform a preceding work to cut off the cooling water supplied to the welding apparatus. And the cooling water that remained in the welding gun was inevitably poured into the workplace. The amount of cooling water that can be discharged each time you change the tip is negligible (for example, to 1 liter), so that near the workplace is always flooded with water. This phenomenon not only inconveniences the operation but also risks the risk of safety accidents.
It is an object of the present invention to solve the above problem and to provide a welding gun cooling water shutoff device for preventing cooling water supplied to a welding gun tip from flowing away from a welding gun during replacement of a welding gun tip.
The above object is achieved by the present invention, which is provided between a cooling water supply line and a welding gun to prevent the cooling water, which has remained on the welding gun at the time of tip replacement of the welding gun,
A casing having a cooling water inlet through which the cooling water flows and a cooling water outlet through which the cooling water is discharged; A cooling water supply port provided on the flow path between the cooling water inlet port and the cooling water outlet port and communicating with the cooling water inlet port of the welding gun for supplying the incoming cooling water toward the welding gun; A cooling water inlet provided on a flow path between the cooling water inlet and the cooling water outlet, the cooling water outlet communicating with the cooling water outlet of the welding gun so as to connect the cooling water circulating the welding gun to the flow passage;
A cylinder provided between the cooling water inlet and the cooling water supply port to provide a space for storing cooling water; A piston mechanism which is coupled to the cylinder to perform a piston movement to thereby form a negative pressure inside the cylinder;
The welding gun cooling water shielding apparatus according to
According to another aspect of the present invention, a cooling water shutoff valve for shutting off the cooling water inlet and / or the cooling water outlet at the same time the piston mechanism is operated to bring the cylinder into a negative pressure state may be included.
According to another aspect of the present invention,
The cylinder, the cooling water inlet, the cooling water inlet, the cooling water inlet, and the cooling water outlet are connected to a joint tunnel provided in the casing in a vertical direction,
And a shut-off valve for shutting down the cooling water inlet and the cooling water outlet at the same time when the piston mechanism is operated to make the cylinder into a negative pressure state;
Wherein the cooling water inlet and the cooling water outlet are opened or closed while being vertically operated by pneumatic pressure in a state of being fitted in the joint tunnel,
A first valve fitted in the joint tunnel and actuated like a piston; And a second valve linearly connected to the first valve by a first connecting rod.
According to the above construction, the cooling water remaining in the welding gun is sucked and stored as a negative pressure when the tip is separated from the welding gun for replacement, and then a new tip is mounted. Then, the negative pressure is released and the cooling water is circulated again, When the tip of the gun is replaced, the water will not fall from the welding gun. Therefore, when the welding gun tip is exchanged by a mechanical method, the operator does not have to approach the welding gun to cut off the cooling water, and the cooling water rarely flows out, so that the workplace can be kept clean and the safety accident can be prevented.
1 is a circuit diagram of a welding gun cooling water shutoff apparatus according to an embodiment of the present invention.
2 is a schematic perspective view of a welding gun cooling water shutoff device according to an embodiment of the present invention.
Figs. 3 to 4 are front-end sectional views of the welding gun cooling water shielding device taken along the line AA in Fig.
Figs. 5 to 6 are schematic side cross-sectional views of the welding gun cooling water shielding device taken along the line BB in Fig. 2, showing operation states.
7 is a perspective view of a shut-off valve of a welding gun cooling water shutoff device according to an embodiment of the present invention.
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. First, the basic matters will be described with reference to Figs. 1 to 3 first. In the drawings, the lines to which the cooling water is supplied are denoted by a thick solid line, and the lines to which the air pressure is supplied are denoted by a thick dotted line.
The welding gun cooling
The welding gun cooling
On one side of the casing (13), a cooling water inlet (15) through which cooling water flows and a cooling water outlet (17) through which cooling water is discharged are provided. The
Cooling
The cooling
That is, the cooling
Inside the
The welding gun cooling
A
The
The
A second pneumatic flow path (43) is provided in the pneumatic cylinder (37) to allow air to act on the rear surface (35b) of the pneumatic function plate. One end of the second
1 (a), 3 (5) and 5 (5) in which the
The capacity of the
According to the feature of the present invention, the
The shut-off
The cooling
The shut-off
1 (a), 3 (5) and 5 (5) show the cooling
The cooling
When the welding gun tip replacement signal is applied, the
When the tips of the
At the same time, the
The configuration shown and described above is merely a preferred embodiment based on the technical idea of the present invention. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.
1: weld gun cooling water shutoff device 3: cooling water supply pipe
5: welding gun 7: upper tip
9: Lower tip 11: Cooling water discharge pipe
13: casing 15: cooling water inlet
17: Cooling
21, 21 ': inlet of cooling
25, 25 ': piston mechanism 27: piston
29: piston operating mechanism 31: piston ring
33: Piston rod 35: Pneumatic acting plate
37:
41: Pneumatic
47, 47 ':
50:
57: solenoid valve 59: transformer
C: Cooling water
Claims (4)
A casing having a cooling water inlet through which the cooling water flows and a cooling water outlet through which the cooling water is discharged;
A cooling water supply port provided on the flow path between the cooling water inlet port and the cooling water outlet port and communicating with the cooling water inlet port of the welding gun for supplying the incoming cooling water toward the welding gun;
A cooling water inlet provided on a flow path between the cooling water inlet and the cooling water outlet, the cooling water outlet communicating with the cooling water outlet of the welding gun so as to connect the cooling water circulating the welding gun to the flow passage;
A cylinder provided between the cooling water inlet and the cooling water supply port to provide a space for storing cooling water;
A piston mechanism which is coupled to the cylinder to perform a piston movement to thereby form a negative pressure inside the cylinder;
Wherein the welding gun cooling water shutoff device comprises:
And a shut-off valve for shutting off the cooling water inlet while the piston mechanism is operated to bring the cylinder into a negative pressure state.
And a shutoff valve for shutting off the cooling water inlet and the cooling water outlet at the same time when the piston mechanism is operated to make the cylinder into a negative pressure state.
The cylinder, the cooling water inlet, the cooling water inlet, the cooling water inlet, and the cooling water outlet are connected to a joint tunnel provided in the casing in a vertical direction,
And a shut-off valve for shutting down the cooling water inlet and the cooling water outlet at the same time when the piston mechanism is operated to make the cylinder into a negative pressure state;
Wherein the cooling water inlet and the cooling water outlet are opened or closed while being vertically operated by pneumatic pressure in a state of being fitted in the joint tunnel,
A first valve fitted in the joint tunnel and actuated like a piston; And a second valve linearly connected to the first valve by a first connecting rod.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140123534A KR20160032873A (en) | 2014-09-17 | 2014-09-17 | Apparatus For Shutting Off Cooling Water Of Welding Gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140123534A KR20160032873A (en) | 2014-09-17 | 2014-09-17 | Apparatus For Shutting Off Cooling Water Of Welding Gun |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20160032873A true KR20160032873A (en) | 2016-03-25 |
Family
ID=55645524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020140123534A KR20160032873A (en) | 2014-09-17 | 2014-09-17 | Apparatus For Shutting Off Cooling Water Of Welding Gun |
Country Status (1)
Country | Link |
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KR (1) | KR20160032873A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018124647A1 (en) * | 2016-12-26 | 2018-07-05 | (주)에이트론 | Device for blocking cooling water of weld gun |
CN111037081A (en) * | 2020-01-13 | 2020-04-21 | 重庆特博液压机电有限公司 | Welding gun cooling water treatment device |
-
2014
- 2014-09-17 KR KR1020140123534A patent/KR20160032873A/en active IP Right Grant
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018124647A1 (en) * | 2016-12-26 | 2018-07-05 | (주)에이트론 | Device for blocking cooling water of weld gun |
CN110114183A (en) * | 2016-12-26 | 2019-08-09 | 艾特伦有限公司 | Welding gun cooling water baffling device |
CN111037081A (en) * | 2020-01-13 | 2020-04-21 | 重庆特博液压机电有限公司 | Welding gun cooling water treatment device |
CN111037081B (en) * | 2020-01-13 | 2023-08-15 | 重庆特博智能装备有限公司 | Welder cooling water processing apparatus |
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