Gas-electric split welding gun tail assembly connector

Abstract

The invention discloses a gas-electric split welding gun butt assembly joint, which integrates various components at the welding gun butt end, including a joint copper body, a nylon locking nut, a wire feeding tube fixing ring, an O-ring, a slotted contraction section set screw, a slotted flat end set screw, and a cross-slot small pan head screw; wherein the joint copper body plays the role of conducting welding current and fixing other components; two O-rings can prevent leakage of welding shielding gas; the cross-slot small pan head screw is used to fix the main cable, so that the joint copper body is connected to the main cable and can conduct electricity; the wire feeding tube fixing ring is used to fix the stop position of the wire feeding tube and the sealing ring; the slotted contraction section set screw is used to lock the wire feeding tube fixing ring; the slotted flat end set screw is used to fix the wire feeding tube; the nylon locking nut is used to lock the copper joint and the welding machine panel joint; the components at the gun butt end are installed on a copper part in an integrated manner; time can be saved and operation is convenient only by tightening the locking nut and the aviation plug.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a gas-electric split welding gun tail assembly joint. Background Art

[0002] When installing or replacing the gas-electric split welding gun on the market, the components need to be connected from inside the welding machine, and the installation process is relatively cumbersome. When replacing the welding gun, the user needs to disassemble the welding machine and then operate it, which is time-consuming and laborious. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a gas-electric split welding gun tail assembly connector, which uses an integrated method to install the various components of the tail on a copper part; when installing or replacing such a welding gun, it is not necessary to disassemble the welding machine, and the various components can be connected from the inside of the welding machine. Only the locking nut and the aviation plug need to be tightened to save time and facilitate operation.

[0004] The technical solution of the present invention is: a gas-electric split welding gun tail assembly joint, comprising a tubular copper joint body, the two ends of the copper joint body are respectively a first end and a second end, the outer surface of the first end is processed with a conical surface matching the welding machine panel interface, the tail of the conical surface is processed with a limiting boss matching the locking nut, when the conical surface matches the welding machine panel interface in place, tightening the locking nut can fix the copper joint body on the welding machine panel joint;

[0005] The copper joint body is provided with a wire feeding tube through hole along the central axis direction, the wire feeding tube through hole is radially expanded at the second end position to become a wire feeding tube fixing ring hole, a wire feeding tube fixing ring is arranged in the wire feeding tube fixing ring hole, and the wire feeding tube can pass through the wire feeding tube fixing ring and the wire feeding tube through hole; a third screw hole is radially provided along the wire feeding tube fixing ring hole, a slotted flat-end set screw is arranged inside the third screw hole, and the slotted flat-end set screw is used to press and fix the wire feeding tube fixing ring and the wire feeding tube inside thereof;

[0006] A plane is milled axially on the outer surface of the second end of the copper joint body, and a first screw hole is opened on the plane, which passes through the through hole of the wire feeding tube. A small cross-slot pan head screw capable of fixing the main cable is arranged in the first screw hole; the plane forms surface contact with the cold-pressed terminal on the main cable for conducting welding current.

[0007] A gas pipe joint hole is formed at the second end of the copper joint body. The gas pipe joint hole is in communication with the first screw hole to form a smooth gas passage to conduct welding shielding gas. The gas pipe joint hole is connected to the gas pipe joint.

[0008] Furthermore, a first O-ring adapting groove is provided on one side of the limiting boss facing the first end, and a first O-ring is embedded in the first O-ring adapting groove, so as to prevent leakage of welding shielding gas.

[0009] Furthermore, a contraction section is provided at the junction of the wire feeding tube fixing ring hole and the wire feeding tube through hole, the diameter of the contraction section is smaller than the diameter of the wire feeding tube through hole and larger than the diameter of the wire feeding tube, so that a step surface is formed on the bottom surface of the inner side of the wire feeding tube fixing ring hole, and a second O-ring is provided on the step surface, which can prevent leakage of welding shielding gas.

[0010] Furthermore, a second screw hole is opened radially along the contraction section, and a slotted contraction section fixing screw is arranged inside the second screw hole, and the slotted contraction section fixing screw is used to tighten the wire feeding tube inside.

[0011] Furthermore, a milling groove for routing the control line is provided on the outer surface of the second end of the copper joint body.

[0012] Furthermore, a circle of trapezoidal grooves is provided on the outer surface of the second end of the copper joint body, and the trapezoidal grooves are located at the end of the milling grooves. When the outer tube of the welding gun wraps around the outer surface of the second end of the copper joint body, the outer tube of the welding gun forms a concave ring at the trapezoidal groove, and the tightening belt tightens the outer tube of the welding gun from the concave ring. The fixed connection is reliable.

[0013] The beneficial effects of the present invention are as follows: the present invention is a new type of MIG (metal inert gas shielded welding) gas-electric split welding gun tail assembly joint, which integrates the components of the welding gun tail end, including a joint copper body, a nylon locking nut, a wire feed tube fixing ring, an O-ring, a slotted contraction section set screw, a slotted flat end set screw, and a cross-slot small pan head screw. It can be applied to split welding guns with and without gas protection. The joint copper body plays the role of conducting welding current and fixing other components; the two O-rings can prevent leakage of welding shielding gas; the cross-slot small pan head screw is used to fix the main cable, so that the joint copper body is connected to the main cable and can conduct electricity; the wire feed tube fixing ring is used to fix the stop position of the wire feed tube and the sealing ring; the slotted contraction section set screw is used to lock the wire feed tube fixing ring; the slotted flat end set screw is used to fix the wire feed tube; the nylon locking nut is used to lock the copper joint and the welding machine panel joint.

[0014] The gas-electric split welding gun tail assembly connector of the present invention uses an integrated way to install the tail components on a copper part; when installing or replacing such a welding gun, it is not necessary to disassemble the welding machine, and the components can be connected from the inside of the welding machine. Only the locking nut and the aviation plug need to be tightened to save time and facilitate operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the joint of the gun tail assembly of the gas-electric split welding gun;

[0016] Figure 2 It is a cross-sectional view of the joint of the gun tail assembly of a gas-electric split welding gun;

[0017] Figure 3 It is a cross-sectional view of the joint of the gun tail assembly of a gas-electric split welding gun;

[0018] Figure 4 It is the front view of the joint of the gun tail assembly of the gas-electric split welding gun.

[0019] In the figure: 1 is the first O-ring, 2 is the copper joint body, 3 is the cross-recessed small pan head screw, 4 is the slotted flat-end set screw, 5 is the slotted contraction section set screw, 6 is the second O-ring, 7 is the wire feeding tube fixing ring, 8 is the locking nut, 9 is the wire feeding tube fixing ring hole, 10 is the air pipe joint hole, 11 is the first screw hole position, 12 is the first O-ring adapter groove, 13 is the conical surface, 14 is the wire feeding tube through hole, 15 is the trapezoidal groove, 16 is the milling groove, 17 is the second screw hole position, 18 is the third screw hole position, 19 is the plane, 20 is the air pipe joint, and 21 is the limiting boss. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] like Figure 1-4 As shown, the gas-electric split welding gun tail assembly joint includes a tubular copper joint body 2, the two ends of the copper joint body 2 are respectively a first end and a second end, the outer surface of the first end is processed with a conical surface 13 matching the welding machine panel interface, and the tail of the conical surface 13 is processed with a limiting boss 21 matching the locking nut 8. When the conical surface 13 matches the welding machine panel interface in place, tightening the locking nut can fix the copper joint body 2 on the welding machine panel joint. The limiting boss 21 is provided with a first O-ring adapter groove 12 on the side facing the first end, and the first O-ring adapter groove 12 is embedded with a first O-ring 1. It can prevent leakage of welding shielding gas.

[0022] like Figure 2 As shown, the copper joint body 2 is provided with a wire feeding tube through hole 14 along the central axis direction, and the wire feeding tube through hole 14 is radially expanded to form a wire feeding tube fixing ring hole 9 at the second end position, and a wire feeding tube fixing ring 7 is arranged in the wire feeding tube fixing ring hole 9, and the wire feeding tube can pass through the wire feeding tube fixing ring and the wire feeding tube through hole. A third screw hole 18 is radially provided along the wire feeding tube fixing ring hole 9, and a slotted flat end set screw 4 is arranged inside the third screw hole 18, and the slotted flat end set screw is used to tighten and fix the wire feeding tube fixing ring and the wire feeding tube inside. A contraction section is provided at the connection between the wire feeding tube fixing ring hole 9 and the wire feeding tube through hole 14, and the diameter of the contraction section is smaller than the diameter of the wire feeding tube through hole and larger than the diameter of the wire feeding tube, so that the bottom surface of the inner side of the wire feeding tube fixing ring hole 9 is formed with a step surface, and a second O-ring 6 is arranged on the step surface. It can prevent leakage of welding shielding gas. At the same time, a second screw hole 17 is opened radially along the contraction section, and a slotted contraction section fixing screw 5 is arranged inside the second screw hole 17, and the slotted contraction section fixing screw is used to tighten the wire feeding tube inside.

[0023] like Figure 2 , 4 As shown, a plane 19 is milled axially on the outer surface of the second end of the copper joint body 2, and a first screw hole 11 penetrating the wire feeding tube through hole 14 is opened on the plane 19. A cross-slot small pan head screw 3 capable of fixing the main cable is arranged in the first screw hole 11.

[0024] like Figure 2 , 4 As shown, a gas pipe joint hole 10 is opened at the second end of the copper joint body 2, and the gas pipe joint hole 10 is communicated with the first screw hole 11 to form a smooth gas passage to conduct welding shielding gas, and the gas pipe joint hole 10 is connected to the gas pipe joint 20.

[0025] like Figure 3 As shown, a milling groove 16 for guiding the control line is provided on the outer surface of the second end of the copper joint body 2 .

[0026] like Figure 3 As shown, a circle of trapezoidal grooves 15 are provided on the outer surface of the second end of the copper joint body 2, and the trapezoidal grooves 15 are located at the end of the milling grooves 16. When the outer tube of the welding gun wraps around the outer surface of the second end of the copper joint body, the outer tube of the welding gun forms a concave ring at the trapezoidal groove, and the tightening belt tightens the outer tube of the welding gun from the concave ring. The fixed connection is reliable.

[0027] When assembling the welding gun with the tail assembly of this type of MIG welding gun: ① The wire feeding tube passes through the copper joint body. Figure 2 ② Insert the air pipe into the air pipe joint. ③ Connect the connector on the main cable to the copper joint body through the cross-slot small pan head screw. ④ Wrap the outer tube around a part of the copper body and fix it with a tightening band. Connect with the welding machine: ① The conical surface of the copper joint fits in place with the corresponding interface on the welding machine panel. ② Tighten the locking nut. ③ The control line aviation plug fits in place with the corresponding interface on the welding machine panel and locks it.

[0028] In this embodiment, the MIG15 MINI gun butt assembly uses an integrated method to install various components of the butt onto a copper part, which makes it convenient and quick to install the welding gun.

[0029] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Gas-electric split welding gun tail assembly joint, characterized by: The invention comprises a tubular copper joint body (2), wherein the two ends of the copper joint body (2) are respectively a first end and a second end, the outer surface of the first end is processed with a conical surface (13) matching the welding machine panel interface, and the tail of the conical surface (13) is processed with a limiting boss (21) matching the locking nut (8), and when the conical surface (13) matches the welding machine panel interface in place, the locking nut can be tightened to fix the copper joint body (2) on the welding machine panel joint; The copper joint body (2) is provided with a wire feeding tube through hole (14) along the central axis direction, and the wire feeding tube through hole (14) is radially expanded at the second end position to become a wire feeding tube fixing ring hole (9), and a wire feeding tube fixing ring (7) is arranged in the wire feeding tube fixing ring hole (9), and the wire feeding tube can pass through the wire feeding tube fixing ring and the wire feeding tube through hole; a third screw hole position (18) is radially provided along the wire feeding tube fixing ring hole (9), and a flat-end tightening screw (4) is arranged inside the third screw hole position (18), and the flat-end tightening screw is used to tighten and fix the wire feeding tube fixing ring and the wire feeding tube inside thereof; A plane (19) is milled axially on the outer surface of the second end of the copper joint body (2), a first screw hole (11) penetrating the wire feeding tube through hole (14) is provided on the plane (19), and a small pan head screw (3) capable of fixing the main cable is arranged in the first screw hole (11); The second end of the copper joint body (2) is provided with a trachea joint hole (10), the trachea joint hole (10) is communicated with the first screw hole (11) to form a smooth gas passage, and the trachea joint hole (10) is connected to the trachea joint (20); A first O-ring adapting groove (12) is provided on a side of the limiting boss (21) facing the first end, and a first O-ring (1) is embedded in the first O-ring adapting groove (12); A contraction section is provided at the junction of the wire feeding tube fixing ring hole (9) and the wire feeding tube through hole (14), wherein the diameter of the contraction section is smaller than the diameter of the wire feeding tube through hole and larger than the diameter of the wire feeding tube, so that a step surface is formed on the bottom surface of the inner side of the wire feeding tube fixing ring hole (9), and a second O-ring (6) is provided on the step surface.

2. The gas-electric split welding gun butt assembly joint according to claim 1, characterized in that: A second screw hole (17) is opened radially along the contraction section, and a contraction section fixing screw (5) is arranged inside the second screw hole (17), and the wire feeding tube inside is pressed by the contraction section fixing screw.

3. The gas-electric split welding gun butt assembly joint according to claim 1, characterized in that: The outer surface of the second end of the copper joint body (2) is provided with a milling groove (16) through which the control line can pass.

4. The gas-electric split welding gun butt assembly joint according to claim 3, characterized in that: A circle of trapezoidal grooves (15) are provided on the outer surface of the second end of the copper joint body (2), and the trapezoidal grooves (15) are located at the end of the milling grooves (16). When the outer tube of the welding gun wraps around the outer surface of the second end of the copper joint body, the outer tube of the welding gun forms a recessed ring at the trapezoidal groove, and the tightening belt tightens the outer tube of the welding gun from the recessed ring.

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