Push-pull wire welding gun carrying air-cooled cable

Abstract

The utility model discloses a push-pull wire welding gun carrying an air-cooled cable. The push-pull wire welding gun uses the air-cooled cable. The cable comprises an insulating sheath, a copper stranded wire, a joint assembly and a crimping iron ring. A gas channel is arranged in the air-cooled cable, and when welding work is carried out, protective gas continuously flows in the channel and is in full contact with the copper stranded wire. Protective gas is led in from the gas connector on the central plug at the tail end of the welding gun, reaches the gun neck end through the gas cooling cable and flows out from the nozzle. When the protective gas flows, part of heat on the copper stranded wires is taken away, so that heat dissipation of the copper stranded wires is accelerated, and the temperature rise of the cable can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to push -and -pull wire welding gun, specifically to a kind of push -and -pull wire welding gun with air-cooled cable, which is used for gas shielded arc welding. BACKGROUND

[0002] The push-and-pull wire welding gun is used in long-distance wire feeding welding scene, and the welding gun cable is long, which can reach more than 8 meters. The welding gun cable is generally a solid cable or a coaxial cable.

[0003] The problems caused by long cable include high labor intensity, large voltage drop and large cable heat, which reduces the load rate of the welding gun. CONTENT OF THE UTILITY MODEL

[0004] To solve the problems in the prior art, the utility model provides a push-and-pull wire welding gun with air-cooled cable. The welding gun uses air-cooled cable. The cable includes an insulating sheath, copper strands, a connector assembly at both ends of the copper strands, and a crimping iron ring. The air-cooled cable has a welding protection gas channel inside. During welding work, the welding protection gas continuously flows in the channel and fully contacts the copper strands. The protection gas reaches the gun neck end through the cable and flows out of the nozzle. The principle is to use flowing welding protection gas as a cooling medium to remove the heat generated by the current passing through the copper strands and the heat radiation of the welding pool to the copper strands, thereby reducing the temperature rise of the cable and improving the load rate of the welding gun.

[0005] The technical solution of the utility model is a push-and-pull wire welding gun with air-cooled cable, which includes a central plug, an air-cooled cable and a wire feeding mechanism main body. One end of the air-cooled cable is connected to the central plug, and the other end is connected to the wire feeding mechanism main body.

[0006] The central plug includes a central plug main body, a gas connector, a connecting rod and a hexagonal screw. An axial central plug main body through hole is formed in the central plug main body. The gas connector is inserted into one end of the central plug main body through hole, and the gas connector has a gas connector through hole along the central axis. One end of the connecting rod is inserted into the other end of the central plug main body through hole, and the connecting rod has a connecting rod through hole along the central axis. The hexagonal screw has a hexagonal screw through hole along the central axis, and the other end of the connecting rod is inserted into one end of the hexagonal screw through hole.

[0007] The air-cooled cable includes copper strands, rubber tubes, a first connector assembly and a second connector assembly. The rubber tubes are sleeved outside the copper strands, and a gap for gas flow is formed between the rubber tubes and the copper strands.

[0008] The first joint assembly is made of copper alloy, the first joint assembly is provided with a first joint assembly through hole along the central axis direction, one end of the first joint assembly is provided with a first joint assembly internal thread capable of being matched with the external thread of the hexagon screw, the other end of the first joint assembly is a first red copper pipe, the first red copper pipe is provided with a first gap at a position, and the first red copper pipe is crimped with one end of the copper stranded wire, and the crimping length is not more than the first gap; one end of the rubber pipe is wrapped around the other end of the first joint assembly, and the wrapped rubber pipe is crimped on the first joint assembly by the iron ring.

[0009] The second joint assembly is made of copper alloy, the first joint assembly is provided with a second joint assembly through hole along the central axis direction, one end of the second joint assembly is a second red copper pipe, the second red copper pipe is provided with a second gap at a position, and the second red copper pipe is crimped with the other end of the copper stranded wire, and the crimping length is not more than the second gap; the other end of the rubber pipe is wrapped around one end of the second joint assembly, and the wrapped rubber pipe is crimped on the second joint assembly by the iron ring; the other end of the second joint assembly is provided with a second joint assembly external thread;

[0010] The gas joint through hole, the central plug main body through hole, the connecting rod through hole, the hexagon screw through hole, the first joint assembly through hole, the gap and the second joint assembly through hole jointly form a gas channel.

[0011] Further, one end of the wire feeding mechanism main body is provided with a main body internal thread capable of being matched with the second joint assembly external thread; and the wire feeding mechanism main body is internally provided with a main body gas channel in communication with the through hole of the main body internal thread.

[0012] Further, the other end of the hexagon screw through hole is processed into a conical surface; the joint surface between the first joint assembly and the conical surface of the hexagon screw is designed as a first joint assembly spherical surface.

[0013] Further, the other end of the second joint assembly is processed into a second joint assembly spherical surface; the joint surface between the wire feeding mechanism main body and the second joint assembly spherical surface is designed as a main body conical surface.

[0014] The wire feeding mechanism main body is internally provided with a main body gas channel in communication with the through hole of the main body internal thread.

[0015] Compared to existing technologies, air-cooled cables offer better heat dissipation and lower temperature rise under the same load rate, allowing the use of copper conductors with smaller cross-sectional areas. Therefore, this push-pull cable gun is relatively lightweight, has a high load rate, and allows for a smaller cross-sectional area of ​​the copper conductor in the cable. Attached Figure Description

[0016] Figure 1 Diagram of air-cooled cable connection;

[0017] Figure 2 This is a cross-sectional view of the central plug structure;

[0018] Figure 3 This is a structural diagram of an air-cooled cable;

[0019] Figure 4 This is a structural diagram of the wire feeding mechanism.

[0020] In the diagram: 101 is the central plug, 102 is the air-cooled cable, 103 is the main body of the wire feeding mechanism, 104 is the motor, 105 is the wire feeding wheel, 106 is the nozzle, 201 is the air connector, 202 is the gas channel, 203 is the external thread of the hexagonal screw, 204 is the conical surface of the hexagonal screw, 301 is the spherical surface of the first connector assembly, 302 is the internal thread of the first connector assembly, 303 is the through hole of the first connector assembly, 304 is the rubber tube, 305 is the copper stranded wire, 306 is the gap, 307 is the through hole of the second connector assembly, 308 is the external thread of the second connector assembly, 309 is the spherical surface of the second connector assembly, 401 is the external thread of the main body, 402 is the main gas channel, 403 is the conical surface of the main body, and 404 is the internal thread of the main body. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, a push-pull wire welding torch equipped with an air-cooled cable includes a central plug 101, an air-cooled cable 102, and a wire feeding mechanism body 103. One end of the air-cooled cable 102 is connected to the central plug 101, and the other end is connected to the wire feeding mechanism body 103.

[0023] like Figure 2 As shown, the central plug 101 includes a central plug body, an air connector 201, a connecting rod, and a hexagonal screw. The central plug body has an axial through-hole. The air connector 201 is inserted into one end of the through-hole, and the air connector 201 has an air connector through-hole along its central axis. One end of the connecting rod is inserted into the other end of the through-hole, and the connecting rod has a connecting rod through-hole along its central axis. The hexagonal screw has a hexagonal screw through-hole along its central axis, and the other end of the connecting rod is inserted into one end of the hexagonal screw through-hole.

[0024] As Figure 3 shown, the air-cooled cable 102 includes copper stranded wire 305, rubber tube 304, first joint assembly and second joint assembly. The rubber tube 304 is sleeved outside the copper stranded wire 305, and a gap 306 for gas flow is formed between the rubber tube 304 and the copper stranded wire 305.

[0025] The first joint assembly is made of copper alloy material, and a first joint assembly through hole 303 is formed in the first joint assembly along the central axis direction. A first joint assembly internal thread 302 is machined at one end of the first joint assembly, which can be matched and connected with the external thread 203 of the hexagonal screw. The other end of the first joint assembly is a first red copper pipe, and there is a first gap at a certain position on the first red copper pipe. The first red copper pipe is crimped with one end of the copper stranded wire 305. The copper stranded wire is inserted into the first red copper pipe with a length of about 1-1.5 cm, and the two are crimped by special equipment, and the crimping length does not exceed the first gap. Due to the existence of the above-mentioned first gap, the part after the first gap of the first red copper pipe will not be deformed during crimping, and the deformed part of the crimping and the first gap serve as part of the gas passage. The first joint assembly after crimping bears the welding current with the copper stranded wire. The cable insulation rubber tube 304 is an internally reinforced structure rubber tube, and one end of the rubber tube 304 is wrapped around the other end of the first joint assembly. The covered part of the rubber tube is crimped on the first joint assembly by an iron ring 310, forming a joint with a certain air tightness. The other end of the hexagonal screw through hole is machined into a conical surface 204. The joint surface between the first joint assembly and the conical surface 204 of the hexagonal screw is designed as a first joint assembly spherical surface 301.

[0026] The second joint assembly is made of copper alloy material, and a second joint assembly through hole 307 is formed in the first joint assembly along the central axis direction. The other end of the second joint assembly is a second red copper pipe, and there is a second gap at a certain position on the second red copper pipe. The second red copper pipe is crimped with the other end of the copper stranded wire 305, and the crimping length does not exceed the second gap. The other end of the rubber tube 304 is wrapped around the other end of the second joint assembly, and the covered part of the rubber tube is crimped on the second joint assembly by an iron ring 310. The other end of the second joint assembly is machined with a second joint assembly external thread 308. The other end of the second joint assembly is machined into a second joint assembly spherical surface 309. The joint surface between the second joint assembly spherical surface 309 and the main body conical surface 403 of the wire feeding mechanism main body 103 is designed as a main body conical surface 403.

[0027] The air joint through hole, the central plug main body through hole, the connecting rod through hole, the hexagonal screw through hole, the first joint assembly through hole 303, the gap 306 and the second joint assembly through hole 307 together form a gas passage 202.

[0028] As Figure 4As shown, the wire feeder body 103 is machined with a body internal thread 404 at one end that can be matched and connected with the external thread 308 of the second joint assembly. And the wire feeder body 103 is provided with a body gas channel 402 that is communicated with the through hole of the body internal thread 404.

[0029] As shown, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the external thread 203 of the hexagon screw on the central plug 101 is connected and tightened with the internal thread 302 of the first joint assembly of the gas cooled cable 102, at this time the conical surface 204 of the hexagon screw and the spherical surface 301 of the first joint assembly are extruded with each other by the thread pre-tightening force, the through hole of the hexagon screw is connected with the through hole 303 of the first joint assembly, and the connection has strong sealing property. Due to the existence of the pre-tightening force, the joint can better bear the welding current. The body internal thread 404 on the wire feeder body 103 is connected and tightened with the external thread 308 of the second joint assembly of the gas cooled cable 102, at this time the body conical surface 403 and the spherical surface 309 of the second joint assembly are extruded with each other by the thread pre-tightening force, the gas channel on the gas cooled cable is connected with the body gas channel 402, and the connection has strong sealing property. Due to the existence of the pre-tightening force, the joint can better bear the welding current. The whole gas channel of the welding torch and the conduction of the welding current are as described above.

[0030] When welding, the welding protective gas is introduced from the gas joint 201 on the central plug at the tail end of the welding torch, and continuously flows in the channel, and can fully contact with the copper strand, the protective gas reaches the neck end of the torch from the gas cooled cable, and flows out from the nozzle. The flowing welding protective gas serves as a cooling medium and takes away part of the heat on the copper strand.

[0031] The above only describes the preferred embodiments of the present application, and it should be noted that for those skilled in the art, without departing from the principles of the present application, some improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A push-pull wire welding gun incorporating a gas-cooled cable, characterized by: Including central plug (101), air-cooled cable (102) and wire feeding mechanism body (103); One end of the air-cooled cable (102) is connected with the central plug (101), and the other end is connected with the wire feeding mechanism body (103); The central plug (101) includes a central plug body, an air connector (201), a connecting rod and a hexagonal screw; An axial central plug body through hole is formed in the central plug body, the air connector (201) is inserted into one end of the central plug body through hole, and the air connector (201) is provided with an air connector through hole along the central axis; One end of the connecting rod is inserted into the other end of the central plug body through hole, and the connecting rod is provided with a connecting rod through hole along the central axis; The hexagonal screw is provided with a hexagonal screw through hole along the central axis, and the other end of the connecting rod is inserted into one end of the hexagonal screw through hole; The first joint assembly is made of copper alloy, and the first joint assembly is provided with a first joint assembly through hole (303) along the central axis; One end of the first joint assembly is provided with a first joint assembly internal thread (302) capable of being matched with the external thread (203) of the hexagonal screw, and the other end of the first joint assembly is a first red copper pipe; The first red copper pipe has a first gap at a certain position, and the first red copper pipe is crimped with one end of the copper stranded wire (305), and the crimping length does not exceed the first gap; One end of the rubber tube (304) is wrapped around the other end of the first joint assembly, and the wrapped part of the rubber tube is crimped on the first joint assembly by the iron ring (310); The second joint assembly is made of copper alloy, and the first joint assembly is provided with a second joint assembly through hole (307) along the central axis; One end of the second joint assembly is a second red copper pipe, and the second red copper pipe has a second gap at a certain position; The second red copper pipe is crimped with the other end of the copper stranded wire (305), and the crimping length does not exceed the second gap; The other end of the rubber tube (304) is wrapped around one end of the second joint assembly, and the wrapped part of the rubber tube is crimped on the second joint assembly by the iron ring (310); The other end of the second joint assembly is provided with a second joint assembly external thread (308); The air connector through hole, the central plug body through hole, the connecting rod through hole, the hexagonal screw through hole, the first joint assembly through hole (303), the gap (306) and the second joint assembly through hole (307) together form a gas passage (202). One end of the wire feeding mechanism body (103) is provided with a body internal thread (404) capable of being matched with the second joint assembly external thread (308); And the wire feeding mechanism body (103) is provided with a body gas passage (402) communicated with the through hole of the body internal thread (404). ​ 2. The push-pull wire welding gun with air-cooled cable according to claim 1, characterized in that: ​ 3. The push-pull wire welding gun with air-cooled cable according to claim 1, characterized in that: The other end of the hexagonal screw through hole is processed into a conical surface (204); the first joint assembly is designed as a first joint assembly spherical surface (301) at the joint of the first joint assembly and the conical surface (204) of the hexagonal screw.

4. The push-pull wire welding gun with air-cooled cable according to claim 1, characterized in that: The other end of the second joint assembly is processed into a second joint assembly spherical surface (309); the wire feeding mechanism main body (103) is designed as a main body conical surface (403) at the joint of the wire feeding mechanism main body (103) and the second joint assembly spherical surface (309).

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