A torch head mounting structure for a plasma torch

Abstract

The utility model discloses a kind of torch head mounting structures of plasma welding torch, including welding torch head and holder, the holder includes clamping base and clamping component, the clamping component is provided with insulating sleeve, welding torch head interval insulating sleeve is fixed in clamping component, detachable connection has protective cover on the clamping component, protective cover is set in holder front side, and heat insulation pad is provided in it, the welding torch head passes through heat insulation pad and protective cover in sequence. The utility model effectively blocks high-temperature heat radiation and spatter by heat insulation protective cover and heat insulation pad, prolongs the service life of insulating sleeve, prevents insulation failure and short-circuit hidden danger.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to a gun head mounting structure for a plasma welding gun. Background Technology

[0002] Plasma welding, due to its advantages such as concentrated arc, controllable heat input, and high welding speed, has been widely used for high-quality welding of materials such as high-strength alloys, titanium alloys, and stainless steel. During the welding process, because plasma welding generates a high-temperature, high-energy plasma beam, as well as sparks and spatter, a clamp is typically used to fix the welding torch head to ensure the safety and stability of the welding process. An insulating sleeve is also required between the clamp and the welding torch head for insulation.

[0003] However, traditional welding torches lack effective protective measures at the clamping area, leaving it exposed during welding. The insulating components are subjected to high-temperature heat radiation from the high-energy plasma beam, causing them to age and fail. Furthermore, high-temperature spatter generated during welding can easily penetrate the clamping area, solidifying after cooling and affecting the torch's insulation performance. This not only shortens the torch's lifespan but can also lead to short circuits and other safety accidents. In addition, the continuous development of automated welding technology places higher demands on the flexibility and operability of welding torches.

[0004] Therefore, there is an urgent need to design a plasma welding torch head mounting structure to meet the current development needs of welding technology. Utility Model Content

[0005] The purpose of this invention is to provide a plasma welding torch head mounting structure that can effectively solve the problems existing in the prior art and improve the safety and stability of the welding process.

[0006] The technical solution adopted by this utility model to solve the above problems is: a plasma welding torch head mounting structure, including a welding torch head and a clamp, wherein the clamp includes a clamping base and a clamping component, an insulating sleeve is provided inside the clamping component, the welding torch head is fixed inside the clamping component through the insulating sleeve, and a protective cover is detachably connected to the clamping component, the protective cover is provided on the front side of the clamp, and a heat insulation pad is provided inside it, the welding torch head passes through the heat insulation pad and the protective cover in sequence.

[0007] Preferably, the protective cover is connected and fixed to the clamping component by threaded fasteners, and includes two sets of half-shells that are symmetrical to each other. Two sets of through holes are opened on the half-shells. The upper end of the clamping component is provided with a connecting bracket, and four sets of threaded holes are provided on the left and right sides of the connecting bracket.

[0008] Preferably, the clamping component includes an upper clamping part and a lower clamping part connected to each other by threaded fasteners, and the connecting bracket is disposed on the upper clamping part.

[0009] Preferably, the clamping base includes a drive housing and a drive arm. The drive housing is rotatably provided with a rotating shaft, and a drive servo motor for driving the rotating shaft is provided inside the drive housing. The first connecting part of the drive arm is connected and fixed to the output shaft of the drive motor through a pin.

[0010] Preferably, the outer side of the rotating shaft is fitted with an elastic bushing, and the first connecting part is provided with a placement groove that matches the contour of the elastic bushing. A positioning hole is provided on one side of the placement groove, and a matching positioning pin is inserted into the positioning hole so that the positioning pin is pressed and fitted against one side of the elastic bushing.

[0011] Preferably, one end of the elastic bushing is provided with a lever, and the first connecting part is provided with a groove that matches the narrow section of the lever.

[0012] Preferably, the upper end of the rotating shaft is fitted with a protective cap via a threaded structure.

[0013] Preferably, the lower clamping part is provided with an extension arm, and the second connecting part of the drive arm is hinged to the lower end of the extension arm by a pin and the position of the extension arm is fixed by a locking member.

[0014] Compared with the prior art, this utility model has the following advantages and effects:

[0015] This invention effectively blocks high-temperature heat radiation and high-temperature spatter generated during welding by setting a detachable protective cover on the clamping component, reducing the impact on the rear clamping part, extending the service life of the insulating sleeve, preventing aging of the insulating sleeve caused by high temperature and debris erosion, and insulation failure caused by slag buildup at the clamping part after debris solidification. It solves the problems of easy aging failure of insulating components and short-circuit safety hazards in the prior art. Attached Figure Description

[0016] Figure 1 This is a perspective view of the gun head mounting structure of a plasma welding gun according to an embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the protective cover according to an embodiment of the present utility model.

[0018] Figure 3 This is an exploded view of the structure of the clamping device according to an embodiment of the present invention.

[0019] Figure 4 yes Figure 3 A magnified view of the area marked A.

[0020] Figure Numbers: Welding torch head 11, clamp 12, clamping base 13, clamping component 14, insulating sleeve 15, protective cover 16, heat insulation pad 17, threaded fastener 21, through hole 22, connecting bracket 23, threaded hole 24, upper clamping part 25, lower clamping part 26, drive housing 31, drive arm 32, rotating shaft 33, first connecting part 34, pin 35, elastic bushing 36, placement groove 37, positioning hole 38, positioning pin 39, paddle 41, groove 42, protective cap 43, extension arm 44, second connecting part 45, pin shaft 46, locking component 47. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0022] Example:

[0023] See Figures 1-4 In this embodiment, a plasma welding torch head mounting structure is disclosed, which is specifically used to improve the stability and safety of the plasma welding torch during the welding process. Specifically, it includes a welding torch head 11 and a clamp 12. The clamp 12 includes a clamping base 13 and a clamping component 14. An insulating sleeve 15 is provided inside the clamping component 14. The welding torch head 11 is fixed inside the clamping component 14 through the insulating sleeve 15. A protective cover 16 is detachably connected to the clamping component 14. The protective cover 16 is located on the front side of the clamp 12 and has a heat insulation pad 17 inside. The welding torch head 11 passes through the heat insulation pad 17 and the protective cover 16 in sequence.

[0024] Specifically, in this embodiment, the insulating sleeve 15 is disposed at the clamping part between the welding torch head 11 and the holder 12. The protective cover 16 can effectively block the high-temperature heat radiation and high-temperature spatter generated during the welding process, reducing the impact of high-temperature heat radiation and high-temperature spatter on the rear clamping part. Through the design of the above protective structure, this utility model can extend the service life of the insulating sleeve 15, effectively alleviate the aging of the insulating sleeve 15 caused by high temperature and debris erosion, and the insulation failure caused by slag accumulation at the clamping part after debris solidification, solving the problems of easy aging failure of insulating components and short circuit safety hazards in the background art. In this embodiment, the protective cover 16 can be made of high-temperature resistant stainless steel 310S or nickel-based alloy Inconel 600 as the base material, and a heat-resistant ceramic microporous coating is sprayed on the surface of the base material. The heat insulation pad 17 is made of aluminum silicate fiber and is also disposed at the connection between the holder 12 and the protective cover 16, further enhancing the heat insulation effect.

[0025] See Figure 2The protective cover 16 is connected and fixed to the clamping component 14 by threaded fasteners 21. It comprises two sets of symmetrically arranged half-shells, each with two sets of through holes 22. The clamping component 14 has a connecting bracket 23 at its upper end, with four sets of threaded holes 24 on both sides of the connecting bracket 23. During installation, the left and right half-shells are aligned with the front of the clamping component 14. The threaded fasteners 21 are then passed through the through holes 22 on the half-shells and the threaded holes 24 on the connecting bracket 23, and the nuts are tightened to fix the protective cover 16 to the clamping component 14. The protective cover 16 is composed of two sets of half-shells. When its protective effect is affected by damage, only the damaged half-shell needs to be replaced, rather than the entire cover, reducing maintenance costs.

[0026] The clamping component 14 includes an upper clamping part 25 and a lower clamping part 26 connected to each other by threaded fasteners 21, and the connecting bracket 23 is disposed on the upper clamping part 25. When assembling the clamping component 14, first, the insulating sleeve 15 is placed on the welding torch head 11, then the part of the welding torch head 11 with the insulating sleeve 15 is placed on the lower clamping part 26, and then the upper clamping part 25 and the lower clamping part 26 are connected into a whole by the threaded fasteners 21. Finally, the tightening torque of the threaded fasteners 21 is adjusted to ensure that the clamping component 14 stably clamps the welding torch head 11.

[0027] The clamping base 13 includes a drive housing 31 and a drive arm 32. A rotating shaft 33 is rotatably mounted on the drive housing 31, and a drive servo motor for driving the rotating shaft 33 is disposed within the drive housing 31. The first connecting part 34 of the drive arm 32 is connected and fixed to the output shaft of the drive motor via a pin 35. During operation, the drive servo motor drives the rotating shaft 33 to rotate, which in turn drives the drive arm 32 to rotate, thereby achieving the swinging motion of the welding torch head 11. By adjusting the swing angle of the welding torch head 11, the basic requirements for the subsequent development of automated welding technology can be met.

[0028] See Figure 3 and Figure 4 The outer side of the rotating shaft 33 is fitted with an elastic bushing 36, and the first connecting part 34 has a placement groove 37 that matches the contour of the elastic bushing 36. In this embodiment, the first connecting part 34 is filled with anti-rust grease, and the elastic bushing 36 forms a seal on the first connecting part 34, which can effectively prevent high-temperature debris or other impurities during the welding process from entering the gap between the rotating shaft 33 and the first connecting part 34, protecting the internal anti-rust grease from contamination and maintaining its good anti-rust performance. A positioning hole 38 is provided on one side of the placement groove 37, and a matching positioning pin 39 is inserted into the positioning hole 38, so that the positioning pin 39 is pressed and fitted against one side of the elastic bushing 36, which improves the installation stability of the elastic bushing 36 in the placement groove 37.

[0029] One end of the elastic bushing 36 is provided with a lever 41, and the first connecting part 34 has a groove 42 adapted to the narrow section of the lever 41. The lever 41 facilitates the clamping of the elastic bushing 36, making it easy to install and remove, while the groove 42 is mainly used for positioning the elastic bushing 36 during installation, so that the lever 41 is always kept in the direction of the groove 42.

[0030] The upper end of the rotating shaft 33 is connected to a protective cap 43 via a threaded structure. The protective cap 43 is made of high-temperature resistant plastic. During installation, its bottom contacts and fits against the elastic bushing 36, protecting the elastic bushing 36. In addition, the protective cap also has a dustproof effect, preventing external impurities from entering the interior of the first connecting part 34.

[0031] The lower clamping part 26 is provided with an extension arm 44. The second connecting part 45 of the drive arm 32 is hinged to the lower end of the extension arm 44 via a pin 46 and the extension arm 44 is fixed in position by a locking member 47. The angle of the extension arm 44 relative to the drive arm 32 is adjusted by loosening the locking member 47, and then the locking member 47 is tightened to fix the extension arm 44 after the angle is confirmed. In this embodiment, the threaded fastener 21 and the locking member 47 can be existing standard parts such as bolts and nuts.

[0032] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A plasma welding torch head mounting structure, characterized in that, The device includes a welding torch head and a clamp. The clamp includes a clamping base and a clamping component. An insulating sleeve is provided inside the clamping component. The welding torch head is fixed inside the clamping component through the insulating sleeve. A protective cover is detachably connected to the clamping component. The protective cover is located on the front side of the clamp and has a heat insulation pad inside. The welding torch head passes through the heat insulation pad and the protective cover in sequence.

2. The plasma welding torch head mounting structure according to claim 1, characterized in that: The protective cover is connected and fixed to the clamping component by threaded fasteners. It includes two sets of half-shells that are symmetrical to each other. Two sets of through holes are opened on the half-shells. The clamping component is provided with a connecting bracket at the upper end. The connecting bracket is provided with four sets of threaded holes on the left and right sides.

3. The plasma welding torch head mounting structure according to claim 2, characterized in that: The clamping component includes an upper clamping part and a lower clamping part that are connected to each other by threaded fasteners, and the connecting bracket is disposed on the upper clamping part.

4. The plasma welding torch head mounting structure according to claim 3, characterized in that: The clamping base includes a drive housing and a drive arm. The drive housing is rotatably equipped with a rotating shaft, and a drive servo motor for driving the rotating shaft is installed inside the drive housing. The first connecting part of the drive arm is connected and fixed to the output shaft of the drive motor through a pin.

5. The plasma welding torch head mounting structure according to claim 4, characterized in that: The outer side of the rotating shaft is fitted with an elastic bushing, and the first connecting part is provided with a placement groove that matches the contour of the elastic bushing. A positioning hole is provided on one side of the placement groove, and a matching positioning pin is inserted into the positioning hole so that the positioning pin is pressed and fitted against one side of the elastic bushing.

6. The plasma welding torch head mounting structure according to claim 5, characterized in that: One end of the elastic bushing is provided with a lever, and the first connecting part has a groove adapted to the narrow section of the lever.

7. The plasma welding torch head mounting structure according to claim 6, characterized in that: The upper end of the shaft is fitted with a protective cap via a threaded connection.

8. The plasma welding torch head mounting structure according to claim 7, characterized in that: The lower clamping part is provided with an extension arm, and the second connecting part of the drive arm is hinged to the lower end of the extension arm by a pin and the position of the extension arm is fixed by a locking member.

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