JP2018001229A - Welding member arresting gear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding member arresting gear capable of downsizing equipment and shielding the back surface side of the welding member at the time of performing a plasma arc weld.SOLUTION: A gas supply mechanism 2 comprises a welding member arresting gear having a groove 12 formed in a center part of an adhesive disk 1 and a suction part 11 for evacuating a welding member across that groove 12 and for feeding a shield gas into the groove 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a welding member restraint device, and more particularly to a welding member restraint device that can be suitably used when performing plasma arc welding.

  Among the welding methods for metal materials, plasma arc welding is a heat conduction type by increasing or decreasing the gas flow rate of a working gas such as argon discharged from a nozzle hole and a high energy density arc generated by a plasma torch provided in a plasma welding machine. Welding and keyhole type welding (single-sided butt back forming) can be selected, and it is widely used as a welding method that solves the shortcomings of TIG welding and MAG welding and improves productivity and quality.

  On the other hand, this plasma arc welding has a problem that it requires high joint accuracy because of automatic welding, restraining of the welding member is indispensable, and the equipment is large and the equipment cost is high.

  On the other hand, in order to constrain the welding member, an apparatus that sucks the welding member under negative pressure has been proposed (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 7-1186

  However, the apparatus described in Patent Document 1 does not take into consideration the shield on the back surface side of the welding member when the equipment is downsized or plasma arc welding is performed.

  In view of the above-mentioned problems of the conventional plasma arc welding, the present invention can reduce the size of the equipment and can restrain the welding member on the back side of the welding member when performing plasma arc welding. The purpose is to provide.

  In order to achieve the above object, the welding member restraining device of the present invention is a welding member restraining device including a suction plate in which a suction part for suctioning the welding member at a negative pressure is formed, and a groove is formed in the central portion of the suction plate. In addition, a suction part that sucks the welding member under a negative pressure is formed across the groove, and a gas supply mechanism that supplies a shielding gas into the groove is provided.

  In this case, the suction part can be configured by an air inlet / outlet opening at a plurality of locations on the surface of the suction disk and an annular seal ring disposed on the outer periphery of the air inlet / outlet.

  In addition, a pipe that supplies compressed air from the compressor to the ejector-type negative pressure generator to generate a negative pressure suction force in a flow path that is connected to the air inlet / outlet of the suction unit, and a pipe that is connected to the pressure gauge In addition to being connected, the compressed air from the compressor can be supplied to the flow path connected to the air inlet / outlet of the suction portion via the pipe connected to the pressure gauge.

  According to the restraint device for a welding member of the present invention, a groove is formed in the central portion of the suction disk, a suction portion for suctioning the welding member at a negative pressure is formed across the groove, and a shield gas is supplied into the groove. By providing the gas supply mechanism, it is possible to reduce the size of the facility and to enable shielding on the back side of the welding member when performing plasma arc welding.

  Further, the suction part is composed of an air inlet / outlet opening at a plurality of locations on the surface of the suction disk and an annular seal ring disposed on the outer periphery with the air inlet / outlet as a center. Can be reliably restrained.

  In addition, a pipe that supplies compressed air from the compressor to the ejector-type negative pressure generator to generate a negative pressure suction force in a flow path that is connected to the air inlet / outlet of the suction unit, and a pipe that is connected to the pressure gauge By connecting and supplying the compressed air from the compressor to the flow passage connected to the air inlet / outlet of the suction portion through the pipe connected to the pressure gauge, the negative pressure suction force and the positive pressure release force are supplied to the compressor. Can be obtained by the compressed air from, and the restraint state of the welding member can be confirmed by the pressure gauge.

It is explanatory drawing which shows one Example of the restraint apparatus of the welding member of this invention. It is explanatory drawing of piping of the restraint apparatus of the welding member. The restraint apparatus of the welding member is shown, (a) is a plan view, (b) is a front view. The restraint apparatus of the said welding member is shown, (a) is AA sectional drawing of FIG.3 (b), (b) is same BB sectional drawing, (c) is CC sectional drawing, (d). These are DD sectional drawings. It is explanatory drawing which shows the usage example of the restraint apparatus of the welding member.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a welding member restraining device of the present invention will be described with reference to the drawings.

1 to 5 show an embodiment of a restraining device for a welding member according to the present invention.
This welding member restraining device is provided with a suction plate 1 in which a suction part 11 for sucking the welding member at a negative pressure is formed. A groove 12 is formed in the central portion of the suction plate 1 and the groove 12 is sandwiched between the suction members 11. The gas supply mechanism 2 for supplying a shielding gas such as argon is provided in the groove 12 while the suction portion 11 for negatively sucking the welding member is formed.

In this case, the suction part 11 is constituted by an air inlet / outlet 13 that opens at a plurality of locations on the surface of the suction disk 1 and an annular seal ring 14 that is disposed on the outer periphery of the air inlet / outlet 13 as a center. Yes.
Thereby, the welding member can be reliably restrained by the suction part 11.

In addition, a pipe 51 that supplies compressed air from the compressor 3 to the ejector-type negative pressure generator 4 to generate a negative pressure suction force in a flow path 15 connected to the air inlet / outlet 13 of the suction unit 11, and a pressure gauge 6 is connected to the pipe 52 connected to the pipe 6.
Thereby, the restraint state of the welding member can be confirmed by the pressure gauge 6.

By the way, the negative pressure suction force of the suction part 11 stops the supply of the compressed air from the compressor 3 to the ejector type negative pressure generator 4 and opens the flow path 15 to the atmosphere via a valve (not shown). Disappears and the restrained state of the welding member can be released.
On the other hand, if necessary, the compressed air from the compressor 3 can be supplied to the flow path 15 connected to the air inlet / outlet port 13 of the suction unit 11 via the pipe 52 connected to the pressure gauge 6.
Thereby, the negative pressure suction force and the positive pressure release force can be obtained by the compressed air from the compressor 3, and the restrained state of the welding member can be reliably released.

  The gas supply mechanism 2 is connected via a pipe 53 to a shield gas discharge pipe 16 having a large number of small holes arranged in the groove 12 of the adsorption plate 1, and argon or the like is placed in the groove 12 of the adsorption plate 1. The shield gas is supplied.

By the way, in the present embodiment, the suction disk 1 of the suction disk 1 is integrally provided with a gantry 7 that supports a welding member to be welded.
Furthermore, the auxiliary mount 8 can be provided according to the size of the welding member to be welded.

  Further, depending on the size of the welding member to be welded, a lock bolt 18 is attached to the air inlet / outlet port 13 of the suction portion 11 where the welding member is not located, as shown in FIG. Try to close it.

  Further, in the present embodiment, the suction cup 1 is unitized, and one or more units are connected and used via the connecting portion 17 according to the size of the welding member to be welded.

As shown in FIG. 5, this welding member restraining device is arranged so that the welded portion where the welding members W1 and W2 are abutted is positioned on the groove 12 in the center of the suction cup 1, and then from the compressor 3. By supplying compressed air to the ejector-type negative pressure generator 4 to generate a negative pressure suction force, the welding members W1 and W2 are sucked negatively into the suction portion 11 to restrain the welding members W1 and W2.
At this time, the restraint state of the welding members W1 and W2 can be confirmed by the pressure gauge 6.

Then, a plasma arc welder 9 rail 93 is installed on the restrained welding members W1 and W2, and the carriage 91 is caused to travel along the rail 93, thereby welding the plasma torch 92 with the welding members W1 and W2. Move over the spot and perform plasma arc welding.
At this time, a shield gas is supplied from the gas supply mechanism 2 into the groove 12 of the suction plate 1 so as to shield the back side of the welding member when performing plasma arc welding.
Further, depending on the size of the welding members W1 and W2 to be welded, the exposed portion of the groove 12 of the suction cup 1 and the welded portion where the welding members W1 and W2 before welding are abutted are supplied into the groove 12. It is desirable to apply a plasma arc welding while affixing a seal tape that prevents leakage of the shield gas, and peeling off the affixed seal tape as necessary.

  After plasma arc welding, the supply of compressed air from the compressor 3 to the ejector-type negative pressure generator 4 is stopped, and the flow path 15 is opened to the atmosphere via a valve (not shown), or the pressure gauge 6 The restraint state of the welding member is released by supplying the compressed air from the compressor 3 to the flow path 15 connected to the air inlet / outlet port 13 of the suction portion 11 via the pipe 52 connected to.

  According to this welding member restraining device, the groove 12 is formed in the central portion of the suction cup 1, the suction portion 11 for sucking the welding member under a negative pressure is formed across the groove 12, and the shielding gas is contained in the groove 12. By providing the gas supply mechanism 2 for supplying the gas, the suction disk 1 is unitized, and one or more units are connected via the connecting portion 17 in accordance with the size of the welding member to be welded. In combination with the fact that the restraint device for welding members and the plasma arc welding machine 9 are separated, the equipment can be reduced in size and welded when performing plasma arc welding. Shielding on the back side of the member can be enabled.

  As mentioned above, although the restraining apparatus of the welding member of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, The structure suitably in the range which does not deviate from the meaning. Can be changed.

  The welding device restraint device of the present invention can reduce the size of the equipment and can shield the back side of the welding member when performing plasma arc welding. It can use suitably for the use which restrains a welding member.

DESCRIPTION OF SYMBOLS 1 Adsorption board 11 Suction part 12 Groove 13 Air inlet / outlet 14 Seal ring 15 Flow path 16 Shield gas discharge pipe 17 Connection part 18 Lock bolt 2 Gas supply mechanism 3 Compressor 4 Ejector type negative pressure generator 51 Piping 52 Piping 53 Piping 6 Pressure gauge 7 Base 8 Auxiliary Base 9 Plasma Arc Welder 91 Bogie 92 Plasma Torch 93 Rail W1, W2 Welding Member

Claims (3)

  In a restraint device for a welding member having a suction plate that has a suction part for sucking a welding member at a negative pressure, a suction part for forming a groove at the center of the suction plate and sucking the welding member at a negative pressure across the groove is provided. A welding member restraining device comprising a gas supply mechanism that is formed and that supplies a shielding gas into the groove.   The said suction part is comprised with the air inlet-and-out opening opened to several places of the surface of an adsorption | suction board, and the cyclic | annular seal ring arrange | positioned on the outer periphery centering on this air inlet / outlet. A restraint device for welding members.   A pipe connected to the flow path connected to the air inlet / outlet of the suction part to supply the compressed air from the compressor to the ejector-type negative pressure generator to generate a negative pressure suction force is connected to a pipe connected to the pressure gauge. The compressed air from the compressor can be supplied to the flow path connected to the air inlet / outlet of the suction portion via a pipe connected to the pressure gauge. A restraint device for welding members.

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