Carbon arc gouging gun head

Abstract

The utility model relates to the technical field of welding and cutting tools, in particular to a carbon arc gouging gun head which comprises a gun head body, a top insulation end cover, a bottom insulation end cover, a connecting assembly, a spring clamping piece and a feeding mechanism. The top insulating end cover and the bottom insulating end cover are correspondingly arranged at the top end and the bottom end of the gun head body; through holes are vertically formed in the gun head body, the top insulating end cover and the bottom insulating end cover; the connecting assembly is connected with the gun head body; an air supply channel is formed in the connecting assembly; the air supply channel, the gun head body and the air outlet hole of the bottom insulating end cover are sequentially communicated; one end of the spring clamping piece is connected with the connecting assembly, and the other end is provided with an arc-shaped clamping opening; the feeding mechanism is mounted on the connecting assembly; a pushing block capable of sliding in the vertical direction is arranged on the feeding mechanism; a clamping hole is formed in the pushing block, and the clamping hole, the arc-shaped clamping opening and the through hole are formed in the vertical direction. And the spring clamping piece is matched with the feeding mechanism for use, so that the universality of the gun head body and the feeding safety and convenience of the carbon rod are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding and cutting tooling, in particular to a carbon arc gouging gun head. Background Art

[0002] Most carbon arc gouging guns currently on the market have their gun tips coaxial with the air pipe, making them bulky. This makes accessibility difficult for welds in confined spaces. Furthermore, most gun tips are made of metal, making it easy for sparks to ignite between the gun tip and the base material when working in confined spaces. Some gun tips are not fully insulated, and sparking issues can still occur.

[0003] Secondly, most carbon rod clamps use screw locking, which makes it inconvenient to insert the carbon rod during operation. The operation requires two hands to operate the carbon rod, and the person needs to hold the carbon rod to insert it, which poses certain safety risks. Therefore, it is of great significance to develop a carbon arc gouging gun that can adapt to small spaces, completely avoid ignition and burn damage between the gun tip and the base material, and allow for safe and convenient carbon rod insertion. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a carbon arc gouging gun head, which solves the technical problems of poor accessibility of the gun head under welding conditions in a narrow space, easy sparking and burning between the gun head and the base material, and poor convenience in feeding the carbon rod during operation.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose, the carbon arc gouging gun head of the utility model comprises a gun head body, a top insulating end cover, a bottom insulating end cover, a connecting assembly, a spring clip and a feeding mechanism;

[0008] The top insulating end cap and the bottom insulating end cap are respectively arranged at the top and bottom ends of the gun head body; through holes are vertically opened inside the gun head body, the top insulating end cap and the bottom insulating end cap;

[0009] The connecting assembly is vertically connected to the gun head body; an air supply channel is provided in the connecting assembly; the air supply channel, the gun head body and the air outlet hole of the bottom insulating end cover are sequentially connected;

[0010] One end of the spring clip is connected to the connecting assembly, and the other end is provided with an arc-shaped clamping opening;

[0011] The feeding mechanism is installed on the connecting assembly; the feeding mechanism is provided with a pushing block capable of sliding along the vertical direction; a clamping hole is opened in the pushing block, and the clamping hole, the arc-shaped clamping opening and the through hole are arranged along the vertical direction.

[0012] Optionally, the delivery mechanism further includes a housing, a trigger, a return spring and a connecting rod;

[0013] One end of the trigger is hinged to the inner wall of the housing, and the other end is provided with a wrench opening;

[0014] One end of the return spring is connected to the inner wall of the housing, and the other end is connected to the trigger;

[0015] A slide groove is provided on the housing; the pushing block is connected to the slide groove in a vertical sliding manner;

[0016] One end of the connecting rod is hinged to the trigger, and the other end is hinged to the pushing block;

[0017] When the trigger swings along the vertical direction, it can drive the pushing block to move synchronously.

[0018] Optionally, the gun head body includes a coaxially arranged bushing and a flange, and the two internally enclose a cavity;

[0019] The flange is connected to the bottom insulating end cover;

[0020] A vent hole is provided on the flange; the air supply channel, the cavity, the vent hole and the bottom insulating end cover are connected in sequence.

[0021] Optionally, the connecting assembly includes an air pipe, a welding handle clamping seat and a mounting seat;

[0022] The air supply channel is opened in the air pipe; the air pipe is vertically connected to the gun head body;

[0023] The welding gun clamping seat and the mounting seat are correspondingly arranged at the bottom end and the top end of the air pipe;

[0024] The spring clip is connected to the side plate of the mounting seat; and the feeding mechanism is connected to the top plate of the mounting seat.

[0025] Optionally, the arc-shaped clamping opening is eccentrically arranged with respect to the through hole.

[0026] Optionally, the top insulating end cap and the bottom insulating end cap are nylon end caps.

[0027] Optionally, the spring clip is a conductive spring clip.

[0028] Optionally, a sliding groove is provided on the spring clip;

[0029] The connecting assembly and the sliding groove are connected by a first screw;

[0030] After the first screw is loosened, it can move laterally in the sliding groove.

[0031] Optionally, the top insulating end cover and the bottom insulating end cover are connected to the gun head body via screws.

[0032] (3) Beneficial effects

[0033] The beneficial effects of the utility model are:

[0034] The top insulating end cap and the bottom insulating end cap are respectively arranged at the top and bottom ends of the gun head body, which can not only prevent external components from directly colliding with the gun head body, but also insulate the top and bottom ends of the gun head body, thereby improving the processing adaptability of the carbon arc gouging gun head in working conditions under narrow working spaces, and effectively avoiding ignition and burning between the gun head body and the base material.

[0035] Traditional carbon arc gouging gun heads have the air pipe built into the gun head, which occupies a large space and has poor adaptability to narrow working spaces. The carbon arc gouging gun head of the utility model vertically connects the connecting assembly to the gun head body, reducing the space occupied by the gun head body and improving its accessibility in narrow working spaces, making it easier to use in small spaces.

[0036] One end of the spring clip is connected to the connecting assembly, and the other end is provided with an arc-shaped clamping opening, so that the arc-shaped clamping opening of the spring clip can elastically clamp the carbon rod. Compared with the traditional connection method of pressing the screw on the carbon rod, the spring clip and the carbon rod are more convenient to disassemble and assemble, which improves the working efficiency. Secondly, the spring clip is an elastic clamping structure that can adapt to the outer diameter of the carbon rod and flexibly clamp it. In addition, the spring clip can press the carbon rod against the wall of the through hole, increasing the contact area between the carbon rod and the gun head body, improving the conductive efficiency, and thus improving the working efficiency.

[0037] The feeding mechanism is equipped with a push block that can slide vertically. A clamping hole is provided in the push block. The carbon rod is clamped through the clamping hole and then the push block is driven vertically to feed the carbon rod. Compared to the traditional method of loosening a screw, manually advancing the carbon rod, and then tightening the screw, the feeding mechanism can be operated manually with one hand, which is convenient and improves work efficiency. Furthermore, the human hand does not come into contact with the carbon rod, reducing safety risks during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the carbon arc gouging gun head of the utility model operating in a narrow working space;

[0039] Figure 2 This is a schematic structural diagram of a carbon arc gouging gun head of the present invention;

[0040] Figure 3It is a cross-sectional schematic diagram of the carbon arc gouging gun head of the present utility model;

[0041] Figure 4 This is a schematic diagram of the connection between the gun head body and the connecting assembly of the present invention;

[0042] Figure 5 It is a cross-sectional schematic diagram of the gun head body of the present utility model;

[0043] Figure 6 It is a cross-sectional schematic diagram of the feeding mechanism of the present utility model;

[0044] Figure 7 This is a schematic structural diagram of the top insulating end cover of the utility model;

[0045] Figure 8 This is a schematic structural diagram of the bottom insulating end cover of the utility model;

[0046] Figure 9 It is a front view of the spring clip of the present utility model;

[0047] Figure 10 It is a top view of the spring clip of the present invention.

[0048] [Description of Reference Numerals]

[0049] 1: Gun head body; 11: Through hole; 12: Bushing; 13: Flange; 131: Vent hole; 14: Cavity;

[0050] 2: Top insulation end cap; 21: First fixing hole;

[0051] 3: Bottom insulation end cap; 31: Air outlet; 32: Second fixing hole;

[0052] 4: Connecting assembly; 41: Air supply channel; 42: Air pipe; 43: Welding handle clamp; 44: Mounting base;

[0053] 5: Spring clip; 51: Arc-shaped clamp; 52: Sliding slot; 53: Screw;

[0054] 6: Feeding mechanism; 61: Pushing block; 62: Housing; 621: Slide; 63: Trigger; 631: Wrench; 64: Return spring; 65: Connecting rod;

[0055] 7: Carbon rod;

[0056] 8: Narrow working space. DETAILED DESCRIPTION

[0057] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0058] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0059] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0060] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can refer to fixed connection, detachable connection, or integration; "connection" can refer to mechanical connection or electrical connection; it can refer to direct connection or indirect connection through an intermediate medium; it can refer to internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0061] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 9 The utility model provides a carbon arc gouging gun head, which includes a gun head body 1, a top insulating end cover 2, a bottom insulating end cover 3, a connecting assembly 4, a spring clip 5 and a feeding mechanism 6; the top insulating end cover 2 and the bottom insulating end cover 3 are correspondingly arranged at the top and bottom ends of the gun head body 1; the gun head body 1, the top insulating end cover 2 and the bottom insulating end cover 3 are vertically provided with a through hole 11; the connecting assembly 4 is vertically connected to the gun head body 1; an air supply channel 4 is provided in the connecting assembly 4 1; the air supply channel 41, the gun head body 1 and the air outlet 31 of the bottom insulating end cover 3 are connected in sequence; one end of the spring clip 5 is connected to the connecting component 4, and the other end is provided with an arc-shaped clamping opening 51; the feeding mechanism 6 is installed on the connecting component 4; the feeding mechanism 6 is provided with a pushing block 61 that can slide vertically; a clamping hole is opened in the pushing block 61, and the clamping hole, the arc-shaped clamping opening 51 and the through hole 11 are arranged vertically to vertically clamp the carbon rod 7 in the clamping hole, the arc-shaped clamping opening 51 and the through hole 11.

[0062] The top insulating end cap 2 and the bottom insulating end cap 3 are correspondingly arranged at the top and bottom ends of the gun head body 1, which can not only prevent external components from directly colliding with the gun head body 1, but also insulate the top and bottom ends of the gun head body 1, thereby improving the processing adaptability of the carbon arc gouging gun head in a narrow working space 8, and effectively avoiding ignition and burning between the gun head body 1 and the base material.

[0063] Conventional carbon arc gouging gun heads incorporate the air pipe within the gun head, which occupies a large space and has poor adaptability to narrow working spaces 8. The carbon arc gouging gun head of the present invention vertically connects the connecting assembly 4 to the gun head body 1 (i.e., the air supply channel 41), reducing the space occupied by the gun head body 1 and improving its accessibility within the narrow working space 8, making it easier to use in confined spaces.

[0064] One end of the spring clip 5 is connected to the connecting assembly 4, and the other end is provided with an arc-shaped clamping opening 51, so that the arc-shaped clamping opening 51 of the spring clip 5 can elastically clamp the carbon rod 7. Compared with the traditional connection method of pressing the screw on the carbon rod 7, the spring clip 5 and the carbon rod 7 are more convenient to disassemble and assemble, thereby improving the working efficiency. Secondly, the spring clip 5 is an elastic clamping structure that can adapt to the outer diameter of the carbon rod 7 and perform flexible clamping; optionally, the spring clip 5 is a spring steel clip, which has good elasticity and conductivity. The spring clip 5 can press the carbon rod 7 against the wall of the through hole 11, thereby increasing the contact area between the carbon rod 7 and the gun head body 1, so as to improve the conductive efficiency and thus improve the working efficiency.

[0065] The feeding mechanism 6 is equipped with a push block 61 that can slide vertically. A clamping hole is formed in the push block 61. The carbon rod 7 is clamped through the clamping hole and the push block 61 is driven vertically to feed the carbon rod 7. Compared with the traditional method of loosening a screw, manually advancing the carbon rod 7, and then tightening the screw, the feeding mechanism 6 can be operated manually with one hand, which is convenient and improves work efficiency. In addition, the human hand does not come into contact with the carbon rod 7, reducing the safety risks of the operation.

[0066] The spring clip 5 is used in conjunction with the feeding mechanism 6 to clamp carbon rods 7 of different specifications and sizes within a certain range, and to conveniently and safely feed the carbon rods 7, thereby improving the versatility of the gun head body 1 and the safety and convenience of feeding the carbon rods 7. It should be noted that during the carbon arc gouging process, as the carbon rods 7 are continuously consumed, the carbon rods 7 need to be continuously moved. Therefore, the clamping force cannot be too large or too small, and must facilitate rapid clamping. The spring clip 5 is used in conjunction with the feeding mechanism 6, and the clamping force of the two and the elastic force of the return spring 64 can be set according to actual needs to quickly and safely feed the carbon rod 7 to the welding end.

[0067] like Figure 6As shown, the feeding mechanism 6 also includes a housing 62, a trigger 63, a return spring 64, and a connecting rod 65; one end of the trigger 63 is hinged to the inner wall of the housing 62, and the other end is provided with a lever 631; one end of the return spring 64 is connected to the inner wall of the housing 62, and the other end is connected to the trigger 63; a slide groove 621 is provided on the housing 62; the push block 61 is vertically slidably connected to the slide groove 621; one end of the connecting rod 65 is hinged to the trigger 63, and the other end is hinged to the push block 61; when the trigger 63 swings vertically, it can drive the push block 61 to move synchronously. Specifically, a groove is provided inside the housing 62 for the trigger 63 to swing, and the groove can limit the maximum swing amplitude of the trigger 63, thereby improving the reliability of the feeding mechanism 6. The shape of the lever 631 is adapted to the shape of a human finger. Pressing the lever 631 can drive the push block 61 to move, thereby feeding the carbon rod 7. The reset spring 64 can reset the trigger 63 after feeding, and then reset the pushing block 61, so as to facilitate the next feeding of the carbon rod 7. The operation is simple, flexible and practical, and no human hands are required to touch the carbon rod 7, so the operation is safe.

[0068] See also Figure 4 and Figure 5 The gun head body 1 includes a coaxially arranged bushing 12 and flange 13, which internally enclose a cavity 14. The flange 13 is connected to the bottom insulating end cap 3. A vent 131 is formed on the flange 13. The gas supply channel 41, cavity 14, vent 131, and bottom insulating end cap 3 are sequentially connected. In this embodiment, the bushing 12 and flange 13 are welded, and the gun head body 1 is a welded structure with no other external attachments, which facilitates heat dissipation from the gun head body 1 and improves its service life. After welding, the bushing 12 and flange 13 internally enclose a cavity 14, which is arranged around the through hole 11. The flange 13 separates the through hole at the bottom end of the bushing 12 from the cavity 14, preventing the high-pressure gas in the gas supply channel 41 from flowing to the carbon rod 7 and affecting the accuracy of the carbon arc gouging. The high-pressure gas flows out through the gas supply channel 41, cavity 14, vent 131, and bottom insulating end cap 3 in sequence, allowing the high-pressure gas to flow into the gouging molten pool and blow off the molten metal on the workpiece. Compared with the method of directly laying the air pipe in the gun head body 1, the air supply channel 41 is arranged vertically with the bushing 12, and a cavity 14 is opened around the through hole 11 in the bushing 12, which effectively reduces the volume of the gun head body 1, improves the adaptability of the carbon arc gouging gun head to processing in narrow working environments, and improves the accessibility of the gun head body 1.

[0069] Furthermore, the connecting assembly 4 includes an air pipe 42, a welding handle clamping seat 43, and a mounting seat 44. The air pipe 42 defines an air supply channel 41. The air pipe 42 is vertically connected to the gun head body 1. The welding handle clamping seat 43 and mounting seat 44 are respectively located at the bottom and top ends of the air pipe 42. The spring clip 5 is connected to the side panels of the mounting seat 44. The feed mechanism 6 is connected to the top panel of the mounting seat 44. Specifically, placing the air pipe 42 independently of the gun head body 1 effectively reduces the volume of the gun head body 1, improves its accessibility, and enhances the adaptability of the carbon arc gouging gun head for processing in confined working environments, compared to integrating the air pipe 42 into the gun head body 1. The welding handle clamping seat 43 is used to clamp the welding handle, which acts as a power supply. The mounting seat 44 is used to mount and secure the spring clip 5 and feed mechanism 6, thereby clamping and conducting electricity to the carbon rod 7 and feeding the carbon rod 7. The spring clip 5 and the feeding mechanism 6 are correspondingly mounted on the side plate and the top plate of the mounting seat 44, so that the spring clip 5 can clamp the carbon rod 7 from the side, and the clamping hole of the pushing block 61 can be sleeved on the carbon rod 7. The structure is compact, occupies little space, and reduces the risk of interference with the base material.

[0070] Preferably, see Figure 9 and Figure 10 The arc-shaped clamping opening 51 is eccentrically arranged with respect to the through hole 11. Since the carbon rod 7 and the through hole 11 are clearance-fitted, and the gap between the carbon rod 7 and the through hole 11 varies depending on the size of the carbon rod 7, with the carbon rod 7 having a smaller outer diameter having a larger gap between the carbon rod 7 and the through hole 11. By eccentrically arranging the arc-shaped clamping opening 51 with respect to the through hole 11, the arc-shaped clamping opening 51 adaptively presses the carbon rod 7 against the inner wall of the through hole 11 through its own elastic force, thereby improving the connection strength between the carbon rod 7 and the gun tip body 1 and the contact area between the carbon rod 7 and the gun tip body 1, thereby improving the conductive efficiency.

[0071] like Figure 7 and Figure 8As shown, the top insulating end cap 2 and the bottom insulating end cap 3 are nylon end caps. Specifically, the top end of the bushing 12 is connected to the top insulating end cap 2 via a first screw, which is recessed into a first fixing hole 21 provided at the top end of the top insulating end cap 2. The bottom end of the flange 13 is connected to the bottom insulating end cap 3 via a second screw, which is recessed into a second fixing hole 32 provided at the bottom end of the bottom insulating end cap 3. Specifically, the first and second fixing holes 21 and 32 are countersunk, allowing the nuts of the first and second screws to be recessed into the countersunk holes to prevent interference between the first and second screws and the parent material. Because the gun head body 1 is used in complex environments and is prone to bumps and collisions, a screw-mounted design facilitates maintenance and replacement of the end caps. Furthermore, when the carbon arc gouging gun head is operated in a confined working space 8, the top and bottom ends of the gun head body 1 are prone to interfering with the parent material, potentially causing sparks and burns. The nylon end caps have excellent insulating properties, insulating the gun head body 1 from the parent material and effectively preventing these sparks and burns.

[0072] like Figure 10 As shown, the spring clip 5 is provided with a sliding groove 52; the connecting assembly 4 and the sliding groove 52 are connected by a screw 53; after the screw 53 is loosened, the spring clip 5 can move laterally within the sliding groove 52. Specifically, the effective cooperation between the sliding groove 52 and the screw 53 not only improves the adaptability of the spring clip 5 to clamp carbon rods 7 of different outer diameters, but also facilitates the adjustment of the eccentricity between the arc-shaped clamping opening 51 and the through hole 11, thereby increasing the flexibility of the spring clip 5.

[0073] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A carbon arc gouging gun head, characterized in that: The carbon arc gouging gun head comprises a gun head body (1), a top insulating end cover (2), a bottom insulating end cover (3), a connecting assembly (4), a spring clip (5) and a feeding mechanism (6); The top insulating end cover (2) and the bottom insulating end cover (3) are correspondingly arranged at the top and bottom ends of the gun head body (1); a through hole (11) is vertically provided inside the gun head body (1), the top insulating end cover (2) and the bottom insulating end cover (3); The connecting assembly (4) is vertically connected to the gun head body (1); an air supply channel (41) is provided in the connecting assembly (4); the air supply channel (41), the gun head body (1) and the air outlet (31) of the bottom insulating end cover (3) are sequentially connected; One end of the spring clip (5) is connected to the connecting assembly (4), and the other end is provided with an arc-shaped clip (51); The feeding mechanism (6) is installed on the connecting assembly (4); the feeding mechanism (6) is provided with a pushing block (61) capable of sliding along the vertical direction; a clamping hole is provided in the pushing block (61), and the clamping hole, the arc-shaped clamping opening (51) and the through hole (11) are arranged along the vertical direction.

2. The carbon arc gouging gun head according to claim 1, characterized in that: The feeding mechanism (6) further comprises a housing (62), a trigger (63), a return spring (64) and a connecting rod (65); One end of the trigger (63) is hinged to the inner wall of the housing (62), and the other end is provided with a wrench opening (631); One end of the return spring (64) is connected to the inner wall of the housing (62), and the other end is connected to the trigger (63); The housing (62) is provided with a sliding groove (621); the pushing block (61) is connected to the sliding groove (621) in a vertical sliding manner; One end of the connecting rod (65) is hinged to the trigger (63), and the other end is hinged to the pushing block (61); When the trigger (63) swings in the vertical direction, it can drive the pushing block (61) to move synchronously.

3. The carbon arc gouging gun head according to claim 1, characterized in that: The gun head body (1) comprises a coaxially arranged bushing (12) and a flange (13), and the two internally enclose a cavity (14); The flange (13) is connected to the bottom insulating end cover (3); A vent hole (131) is provided on the flange (13); the air supply channel (41), the cavity (14), the vent hole (131) and the bottom insulating end cover (3) are sequentially connected.

4. The carbon arc gouging gun head according to claim 1, characterized in that: The connecting assembly (4) comprises an air pipe (42), a welding handle clamping seat (43) and a mounting seat (44); The air supply channel (41) is provided in the air pipe (42); the air pipe (42) is vertically connected to the gun head body (1); The welding gun clamping seat (43) and the mounting seat (44) are correspondingly arranged at the bottom end and the top end of the air pipe (42); The spring clip (5) is connected to the side plate of the mounting seat (44); and the feeding mechanism (6) is connected to the top plate of the mounting seat (44).

5. The carbon arc gouging gun head according to claim 1, characterized in that: The arc-shaped clamping opening (51) and the through hole (11) are eccentrically arranged.

6. The carbon arc gouging gun head according to claim 1, characterized in that: The top insulating end cover (2) and the bottom insulating end cover (3) are nylon end covers.

7. The carbon arc gouging gun head according to claim 1, characterized in that: The spring clip (5) is a conductive spring clip.

8. The carbon arc gouging gun head according to claim 1, characterized in that: The spring clip (5) is provided with a sliding groove (52); The connecting assembly (4) and the sliding groove (52) are connected by screws (53); The screw (53) can move laterally in the sliding groove (52) after being loosened.

9. The carbon arc gouging gun head according to claim 1, characterized in that: The top insulating end cover (2) and the bottom insulating end cover (3) are connected to the gun head body (1) via screws.

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