Handheld laser welding gun nozzle

Abstract

The utility model provides a handheld laser welding gun nozzle, which belongs to the technical field of laser welding and is used for solving the problem that the whole welding gun is forced to be scrapped after a welding nozzle is damaged because the welding nozzle and a welding gun main body are fixed into a whole in the prior art. The utility model provides a handheld laser welding gun nozzle which comprises a gun barrel provided with a laser channel, and the gun barrel is detachably installed in a gun body through a locking mechanism. The locking mechanism is of a hoop structure; when the hoop is loosened, the gun barrel can be inserted into the gun body or taken out of the gun body; and when the hoop is tightened, the gun barrel is fixed in the gun body. Through the modular design, the welding nozzle and the welding gun body are easily separated and recombined, once the welding nozzle is damaged, the function of the welding gun can be recovered only through simple replacement, and the maintenance cost and the use threshold are greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser welding, in particular to a handheld laser welding gun nozzle. Background Art

[0002] Handheld laser welding guns are welding tools, and their core components, welding nozzles, often become vulnerable parts due to factors such as high temperature and wear. The traditional design fixes the welding nozzle and the welding gun body as one. This structure often causes the entire welding gun to be scrapped because the welding nozzle cannot be replaced alone after the welding nozzle is damaged, which not only increases the cost of use, but also causes a large waste of resources and reduces the overall resource utilization of the equipment. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a handheld laser welding gun nozzle, which is used to solve the problem in the prior art that the welding nozzle is fixed to the welding gun body as a whole, and the entire welding gun is forced to be scrapped when the welding nozzle is damaged.

[0004] To achieve the above-mentioned and other related purposes, the utility model provides a handheld laser welding gun nozzle, including a gun barrel provided with a laser channel, wherein the gun barrel is detachably mounted in a gun body through a locking mechanism;

[0005] The locking mechanism is a clamp structure;

[0006] When the clamp is loosened, the gun barrel can be inserted into the gun body or removed from the gun body;

[0007] When the clamp is tightened, the gun barrel is fixed in the gun body.

[0008] Optionally, an outer tube is protruding from the gun body, and the tail end of the gun barrel is inserted into the outer tube;

[0009] The clamp structure is arranged on the outer tube and is located in the matching area between the outer tube and the gun barrel.

[0010] Optionally, the outer tube is divided into at least two arc-shaped parts, and there is a gap between the connected arc-shaped parts. The clamp structure annularly clamps the outer circular surface of each arc-shaped part, and the gun barrel is inserted into the inner circular surface of each arc-shaped part. The clamp structure adjusts the tightness of each arc-shaped part on the gun barrel.

[0011] Optionally, the outer tube is provided with a first arc groove and a second arc groove, the first arc groove and the second arc groove are along the circumferential direction, and one end of the first arc groove and the second arc groove are connected through a longitudinal groove;

[0012] The first arc groove, the second arc groove and the longitudinal groove divide a clamp sheet from the outer tube, a first clamp seat is arranged at the end of the clamp sheet, and a second clamp seat is arranged at the corresponding position of the outer tube body, and the relative distance between the first clamp seat and the second clamp seat can be adjusted.

[0013] Optionally, the relative distance between the first clamp seat and the second clamp seat is adjusted by a screw rod and a screw hole.

[0014] Optionally, the gun barrel comprises an insertion section and an air outlet nozzle connected to each other;

[0015] The insertion section cooperates with the gun body;

[0016] The gas outlet nozzle is conical, and the end is the outlet of the laser and the protective gas. A wire guide nozzle for the welding wire to pass through is also arranged outside the end of the gas outlet nozzle.

[0017] Optionally, a welding wire anti-twist device is further included, the welding wire anti-twist device is detachably mounted on the gun barrel, the axis of the welding wire anti-twist device and the gun barrel intersect at the outlet of the gas outlet, and the welding wire anti-twist device includes:

[0018] A first wire nozzle, a second wire nozzle and a quick-release structure, wherein the first wire nozzle and the second wire nozzle are both provided with wire holes, the tail end of the first wire nozzle is rotatably matched with the head end of the second wire nozzle, and the quick-release structure is arranged on the outer layer of the matching position of the first wire nozzle and the second wire nozzle and limits the unexpected axial sliding of the first wire nozzle and the second wire nozzle.

[0019] Optionally, the welding wire anti-twist device and the gun barrel are connected by a double-headed tightening structure, and the double-headed tightening structure includes a first tightening area and a second tightening area located on both sides, the first tightening area and the second tightening area respectively match the welding wire anti-twist device and the gun barrel shape, and the tightening degree of the first tightening area and the second tightening area is adjusted by screws.

[0020] Optionally, the inner circular surface of the tail end of the first nozzle is rotatably matched with the outer circular surface of the head end of the second nozzle;

[0021] The quick-release structure comprises an elastic member, a sliding ring and a locking body;

[0022] The elastic member is annular and is sleeved on the outer circumferential surface of the tail end of the first nozzle;

[0023] The sliding ring is slidably sleeved outside the elastic member and slidably cooperates with the first thread nozzle, and two ends of the elastic member are respectively abutted against the stepped surfaces of the second thread nozzle and the sliding ring;

[0024] A locking hole is radially arranged at the matching part of the second thread nozzle and the first thread nozzle, and the locking hole passes through the first thread nozzle to form a blind hole on the second thread nozzle, the locking body is movably arranged in the locking hole, and a step is arranged on the inner circle of the sliding ring;

[0025] Initially, the elastic member causes the step to match the position of the locking body, and causes the locking body to be embedded in the first screw nozzle and the second screw nozzle at the same time;

[0026] After the sliding ring overcomes the elastic force and moves, the step and the locking body are offset from each other, and the locking body is disengaged from the locking hole of the second screw nozzle.

[0027] Optionally, the locking holes are axially distributed in at least two groups.

[0028] As described above, the handheld laser welding gun nozzle of the utility model has at least the following beneficial effects:

[0029] First, through modular design, the welding nozzle and the welding gun body can be easily separated and reassembled. Once the welding nozzle is damaged, the welding gun function can be restored by simply replacing it, which greatly reduces the maintenance cost and usage threshold. Secondly, it improves the efficiency of resource utilization, extends the overall service life of the welding gun, and reduces the phenomenon of the entire gun being scrapped due to welding nozzle damage. In addition, the design also enhances the flexibility and maintainability of the welding gun, providing users with a more convenient and economical welding solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Shown is a schematic diagram of the gun barrel and welding wire anti-twisting device of the utility model.

[0031] Figure 2 Shown is a schematic diagram of the utility model installed on a welding gun.

[0032] Figure 3 Display for this utility model Figure 2 A partial enlarged schematic diagram in the middle.

[0033] Figure 4 The figure shows a schematic diagram of the utility model being separated from a welding gun.

[0034] Figure 5 Shown is a half-section schematic diagram of the welding wire anti-twisting device of the present invention.

[0035] Figure 6 Shown is a partial cross-sectional schematic diagram of the welding wire anti-twisting device of the present invention.

[0036] Among them: outer tube 5, locking mechanism 51, first arc groove 511, second arc groove 512, longitudinal groove 513, clamp plate 514, first clamp seat 515, second clamp seat 516, screw 517, barrel 6, insertion section 60, air outlet nozzle 61, wire guide nozzle 611, first wire nozzle 40, wire hole 401, limit plate 402, retaining spring 403, second wire nozzle 41, quick release structure 42, elastic member 421, sliding ring 422, step 4221, locking body 423, locking hole 424, spring tube, driving wheel 431, power source 432, welding wire 92. DETAILED DESCRIPTION

[0037] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0038] See also Figures 1 to 6 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0039] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0040] For this example, please refer to Figure 2-4 The embodiment of the handheld laser welding gun nozzle provided by the utility model comprises a gun barrel 6 provided with a laser channel, and the gun barrel 6 is detachably installed in the gun body through a locking mechanism 51, and the locking mechanism 51 can be a clamp structure.

[0041] In the specific embodiment, an outer tube 5 is protruded from the gun body, and the rear end of the gun barrel 6 is inserted into the outer tube 5; a clamp structure is arranged on the outer tube 5 and located in the matching area between the outer tube 5 and the gun barrel 6, so that the gun barrel 6 and the outer tube 5 can be fixedly connected as one.

[0042] Specifically, the locking mechanism 51 of the clamp structure works as follows: when the clamp is loosened, the gun barrel 6 can be inserted into the gun body or taken out of the gun body; when the clamp is tightened, the gun barrel 6 is fixed in the gun body.

[0043] During welding, when the barrel is damaged, the clamp is loosened, and then the damaged barrel is removed from the outer tube 5 of the gun body, and a new welding gun barrel is replaced, and then the clamp is tightened, and the new welding gun barrel is fixed and installed to continue the operation. This greatly reduces the maintenance cost and the threshold for use, improves the efficiency of resource utilization, prolongs the service life of the entire welding gun, and reduces the phenomenon of the entire gun being scrapped due to damage to the welding nozzle.

[0044] Furthermore, in one possible embodiment, the outer tube 5 is divided into at least two arc-shaped parts, and there is a gap between the connected arc-shaped parts. The clamp structure annularly clamps the outer circular surface of each arc-shaped part, and the gun barrel 6 is inserted into the inner circular surface of each arc-shaped part. The clamp structure adjusts the tightness of each arc-shaped part on the gun barrel 6.

[0045] In another possible implementation, Figure 3 As shown, the outer tube 5 is provided with a first arc groove 511 and a second arc groove 512, the first arc groove 511 and the second arc groove 512 are along the circumferential direction, and one end of the first arc groove 511 and the second arc groove 512 are connected through a longitudinal groove 513; the first arc groove 511, the second arc groove 512 and the longitudinal groove 513 separate a clamp sheet 514 from the outer tube 5, the end of the clamp sheet 514 is provided with a first clamp seat 515, and the corresponding position of the outer tube 5 body is provided with a second clamp seat 516, and the relative distance between the first clamp seat 515 and the second clamp seat 516 can be adjusted. The relative distance between the first clamp seat 515 and the second clamp seat 516 is adjusted by a screw 517 and a screw hole.

[0046] In the above embodiments, the specific clamp structure of the locking mechanism 51 is realized in two ways respectively, which has the characteristics of convenient loosening and tightening operation, on-site operation, and low threshold for use. In the latter embodiment, the clamp structure is integrally formed with the outer tube 5, the structure is streamlined, and the process of replacing the gun barrel 6 is further simplified.

[0047] This embodiment can be found in Figure 1 The gun barrel 6 includes an insertion section 60 and an air outlet nozzle 61 which are connected to each other; the insertion section 60 cooperates with the gun body and is locked by the locking mechanism 51; the air outlet nozzle 61 is conical, and the end is the outlet for laser and shielding gas. A wire guide nozzle 611 is also provided on the outer side of the end of the air outlet nozzle 61 for the welding wire 92 to pass through.

[0048] During operation, the welding wire is continuously fed from the wire guide nozzle 611 to the end of the gas outlet nozzle 61, and the laser is irradiated from the barrel 6 on the welding wire 92, and the welding wire melts to form a welding effect. At the same time, the shielding gas is also ejected from the gas outlet nozzle 61, covering the welding point to play a protective role, and the gas flow ejected from the gas outlet nozzle 61 can also prevent the welding slag splashed by welding from entering the barrel 6 to cause blockage.

[0049] In this embodiment, Figure 1 As shown, the welding wire anti-twist device and the gun barrel 6 are connected by a double-headed tight hoop structure, which includes a first tight hoop area and a second tight hoop area located on both sides, the first tight hoop area and the second tight hoop area respectively match the appearance of the welding wire anti-twist device and the gun barrel 6, and the tightness of the first tight hoop area and the second tight hoop area is adjusted by a screw. The welding wire anti-twist device and the gun barrel 6 can be freely disassembled and assembled, and can be matched with welding guns and welding wires of different specifications according to the needs of actual welding operations.

[0050] This embodiment can be found in Figure 4-6 , and also includes a welding wire anti-twist device, which is detachably installed on the gun barrel 6, and the axes of the welding wire anti-twist device and the gun barrel 6 intersect at the outlet of the air outlet nozzle 61. The welding wire anti-twist device includes: a first wire nozzle 40, a second wire nozzle 41 and a quick-release structure 42. The first wire nozzle 40 and the second wire nozzle 41 are both provided with wire holes 401. The tail end of the first wire nozzle 40 is rotatably matched with the head end of the second wire nozzle 41. The quick-release structure 42 is arranged on the outer layer of the matching position of the first wire nozzle 40 and the second wire nozzle 41 and limits the unexpected axial sliding of the first wire nozzle 40 and the second wire nozzle 41.

[0051] During the welding operation, the welding gun needs to be used in different positions. The tail end of the welding gun is connected to a wire feeder tube, which will be dragged along by the welding gun when it moves. In the prior art, both ends of the wire feeder tube are fixedly connected to the welding gun or wire feeder. During the process of the welding gun dragging the wire feeder tube, the wire feeder tube may be twisted and deformed, which in turn causes the cross-section of the wire feeder tube to deform. This phenomenon significantly increases the friction resistance of the welding wire in the pipeline, causing problems such as poor wire feeding, uneven speed, and even blockage, which seriously affects the continuity of the welding operation and the quality of the weld. Therefore, during the operation, welders need to always pay attention to the wire feeder tube, straighten the wire feeder tube, and avoid twisting of the wire feeder tube.

[0052] In the above embodiment, the welding wire anti-twist device is installed on the welding gun nozzle, and the tail end is connected to the wire feeder through the wire feeding tube. The first wire nozzle 40 and the second wire nozzle 41 of the welding wire anti-twist device can rotate relative to each other. Figure 4 The first wire nozzle 40 is fixedly mounted on the welding gun nozzle, and the welding wire enters from the second wire nozzle 41 and enters the welding position from the first wire nozzle 40. Since the first wire nozzle 40 and the second wire nozzle 41 can rotate relative to each other, when the external wire feeding tube is twisted during the dragging process, the torsional force is transmitted along the wire feeding tube to the connection between the second wire nozzle 41 and the first wire nozzle 40, and the torsional force is consumed by the rotation of the second wire nozzle 41, thereby avoiding the twisting of the wire feeding tube.

[0053] Furthermore, if Figure 5 and Figure 6As shown, the inner circular surface of the tail end of the first thread nozzle 40 is rotatably matched with the outer circular surface of the head end of the second thread nozzle 41; the quick-release structure 42 includes an elastic member 421, a sliding ring 422 and a locking body 423; the elastic member 421 is annular and is sleeved on the outer circular surface of the tail end of the first thread nozzle 40; the sliding ring 422 is slidably sleeved outside the elastic member 421 and slidably matched with the first thread nozzle 40, and the two ends of the elastic member 421 are respectively abutted on the stepped surfaces of the second thread nozzle 41 and the sliding ring 422; the matching part of the second thread nozzle 41 and the first thread nozzle 40 is radially provided with a locking hole 424, and the locking hole 424 penetrates the first thread nozzle 40 and forms a blind hole on the second thread nozzle 41, the locking body 423 is movably arranged in the locking hole 424, and a step 4221 is arranged on the inner circle of the sliding ring 422;

[0054] Initially, the elastic member 421 causes the step 4221 to match the position of the locking body 423 and presses the locking body 423, causing the locking body 423 to be embedded in the first thread nozzle 40 and the second thread nozzle 41 at the same time, so that the first thread nozzle 40 and the second thread nozzle 41 cannot be axially misaligned;

[0055] When it is necessary to remove the wire feeding tube, push the sliding ring 422 by hand. After the sliding ring 422 overcomes the elastic force and moves, the step 4221 and the locking body 423 are offset. Then the second wire nozzle 41 is pulled out. Under the action of the pulling force, the locking body 423 is disengaged from the locking hole 424 of the second wire nozzle 41, and the second wire nozzle 41 can be pulled out, so that the wire feeding tube connected to the second wire nozzle 41 as a whole can be pulled out.

[0056] The locking holes 424 are axially distributed in at least two groups, preferably about four groups. The locking holes 424 can be spherical balls, and the cross section of the spherical balls matches the cross section of the blind hole formed on the second wire nozzle 41. Since the locking holes 424 are spherical, when the sliding ring 422 is pushed by hand to cause the step 4221 and the locking body 423 to be offset, and the second wire nozzle 41 is pulled out at the same time, the locking holes 424 are more easily disengaged from the blind hole on the second wire nozzle 41 under the action of the lateral force, so that the second wire nozzle 41 can be pulled out more easily, and the wire feeding tube can be disassembled.

[0057] The second wire nozzle 41 is provided with a limit plate 402 for limiting the sliding range of the sliding ring 422. An annular retaining spring 403 is provided at the end of the second wire nozzle 41. The retaining spring 403 protrudes from the outer circumference of the second wire nozzle 41. The retaining spring 403 abuts against the step 4221 on the inner circle of the sliding ring 422 to limit the sliding range on this side. A spring tube is provided at the end of the second wire nozzle 41. The wire feeding tube is provided in the spring tube. The welding wire 92 passes through the spring tube and penetrates into the wire feeding tube. The spring tube is provided at the transition connection between the wire feeding tube and the second wire nozzle 41, which can absorb the bending stress of the connection part and prevent fatigue fracture of the connection part. The limit plate 402, the retaining spring 403 and the step 4221 respectively limit the maximum sliding range of the sliding ring 422 in two directions, ensuring that the assembly relationship between the various components is stable and the functions are normal.

[0058] In summary, the utility model effectively overcomes various shortcomings in the prior art, can produce beneficial technical effects, and has significant progress.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. Handheld laser welding gun nozzle, characterized by: It comprises a gun barrel (6) provided with a laser channel, wherein the gun barrel (6) is detachably mounted in a gun body via a locking mechanism (51); The locking mechanism (51) is a clamp structure; When the clamp is loosened, the gun barrel (6) can be inserted into the gun body or removed from the gun body; When the clamp is tightened, the gun barrel (6) is fixed in the gun body.

2. The handheld laser welding gun nozzle according to claim 1, characterized in that: An outer tube (5) is protruding from the gun body, and the rear end of the gun barrel (6) is inserted into the outer tube (5); The clamp structure is arranged on the outer tube (5) and is located in the matching area between the outer tube (5) and the gun barrel (6).

3. The handheld laser welding gun nozzle according to claim 2, characterized in that: The outer tube (5) is divided into at least two arcuate parts, a gap is provided between the connected arcuate parts, the clamp structure annularly clamps the outer circumferential surface of each arcuate part, the gun barrel (6) is inserted into the inner circumferential surface of each arcuate part, and the clamp structure adjusts the tightness of each arcuate part on the gun barrel (6).

4. The handheld laser welding gun nozzle according to claim 2, characterized in that: The outer tube (5) is provided with a first arc-shaped groove (511) and a second arc-shaped groove (512), the first arc-shaped groove (511) and the second arc-shaped groove (512) are arranged along a circumferential direction, and one end of the first arc-shaped groove (511) and the second arc-shaped groove (512) are connected via a longitudinal groove (513); The first arc-shaped groove (511), the second arc-shaped groove (512) and the longitudinal groove (513) separate a clamp sheet (514) from the outer tube (5); a first clamp seat (515) is arranged at the end of the clamp sheet (514); a second clamp seat (516) is arranged at a corresponding position of the outer tube (5) body; and the relative distance between the first clamp seat (515) and the second clamp seat (516) is adjustable.

5. The handheld laser welding gun nozzle according to claim 4, characterized in that: The relative distance between the first clamp seat (515) and the second clamp seat (516) is adjusted via a screw rod (517) and a screw hole.

6. The handheld laser welding gun nozzle according to claim 1, characterized in that: The gun barrel (6) comprises an insertion section (60) and an air outlet nozzle (61) which are connected to each other; The insertion section (60) cooperates with the gun body; The gas outlet nozzle (61) is conical, and the end thereof is an outlet for laser and protective gas. A wire guide nozzle (611) for the welding wire (92) to pass through is also arranged outside the end of the gas outlet nozzle (61).

7. The handheld laser welding gun nozzle according to claim 1, characterized in that: It also includes a welding wire anti-twist device, which is detachably mounted on the gun barrel (6), and the axes of the welding wire anti-twist device and the gun barrel (6) intersect at the outlet of the gas outlet nozzle (61), and the welding wire anti-twist device includes: A first wire nozzle (40), a second wire nozzle (41) and a quick-release structure (42), wherein the first wire nozzle (40) and the second wire nozzle (41) are both provided with a wire hole (401), the tail end of the first wire nozzle (40) is rotatably matched with the head end of the second wire nozzle (41), and the quick-release structure (42) is provided on the outer layer of the matching position of the first wire nozzle (40) and the second wire nozzle (41) and limits the first wire nozzle (40) and the second wire nozzle (41) from unexpected axial sliding.

8. The handheld laser welding gun nozzle according to claim 7, characterized in that: The welding wire anti-twist device and the gun barrel (6) are connected via a double-headed tightening structure, wherein the double-headed tightening structure comprises a first tightening area and a second tightening area located on two sides, wherein the first tightening area and the second tightening area respectively match the shapes of the welding wire anti-twist device and the gun barrel (6), and the tightening degree of the first tightening area and the second tightening area is adjusted by a screw.

9. The handheld laser welding gun nozzle according to claim 7, characterized in that: The inner circular surface of the tail end of the first thread nozzle (40) is rotatably matched with the outer circular surface of the head end of the second thread nozzle (41); The quick-release structure (42) comprises an elastic member (421), a sliding ring (422) and a locking body (423); The elastic member (421) is annular and is sleeved on the outer circumferential surface of the tail end of the first thread nozzle (40); The sliding ring (422) is slidably sleeved outside the elastic member (421) and slidably cooperates with the first thread nozzle (40), and two ends of the elastic member (421) respectively abut against the stepped surfaces of the second thread nozzle (41) and the sliding ring (422); A locking hole (424) is radially arranged at the mating portion of the second thread nozzle (41) and the first thread nozzle (40); the locking hole (424) penetrates the first thread nozzle (40) to form a blind hole on the second thread nozzle (41); the locking body (423) is movably arranged in the locking hole (424); and a step (4221) is arranged on the inner circle of the sliding ring (422); Initially, the elastic member (421) causes the step (4221) to match the position of the locking body (423), and causes the locking body (423) to be embedded in the first thread nozzle (40) and the second thread nozzle (41) at the same time; After the sliding ring (422) overcomes the elastic force and moves, the step (4221) and the locking body (423) are misaligned, and the locking body (423) is disengaged from the locking hole (424) of the second thread nozzle (41).

10. The handheld laser welding gun nozzle according to claim 9, characterized in that: The locking holes (424) are distributed in at least two groups axially.

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