Nozzle assembly, welding gun module and laser processing device

Abstract

The utility model discloses a nozzle assembly, welding gun module and laser processing device relates to laser processing technical field, wherein the nozzle assembly includes connecting pipe and nozzle, connecting pipe includes connecting section and plug-in section mutually connected, the plug-in section is equipped with at least one elastic clamping tongue, and the elastic clamping tongue is equipped with the nozzle. A first clamping structure is arranged on the surface of one side, deviating from the central axis of the connecting pipe, of the elastic clamping tongue; the nozzle comprises a nozzle body and a sleeving section which are connected, the inserting section is sleeved with the sleeving section, a second clamping structure is arranged on the inner wall of the sleeving section, and the second clamping structure is matched with the first clamping structure in a clamped mode. According to the technical scheme, the convenience of replacing the nozzle can be improved.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, and in particular to a nozzle assembly, a welding torch module, and a laser processing device. Background Technology

[0002] Currently, laser processing technology is being used more and more widely. Lasers are output from welding torches, and different processing needs can be met by changing the copper nozzle at the torch's output port. For example, different copper nozzles can be used to achieve different processing purposes such as fillet welding, splicing welding, lap welding, stacking welding, cleaning, or cutting. Additionally, when using welding wire for laser welding, different wire feed diameters can be matched by changing the nozzle. However, the copper nozzle is generally fixed to the welding torch by threads, making disassembly and assembly relatively cumbersome when changing it. Utility Model Content

[0003] The main purpose of this invention is to provide a nozzle assembly, a welding gun module, and a laser processing device, which aims to improve the convenience of nozzle replacement.

[0004] To achieve the above objectives, the nozzle assembly proposed in this utility model includes:

[0005] A connecting pipe, comprising a connecting section and a plug-in section connected to each other, the plug-in section having at least one elastic latch, and the elastic latch having a first snap-fit ​​structure on its surface opposite to the central axis of the connecting pipe; and

[0006] The nozzle includes a nozzle body and a sleeve section connected to each other. The sleeve section is sleeved on the insertion section. The inner wall of the sleeve section is provided with a second snap-fit ​​structure, which engages with the first snap-fit ​​structure.

[0007] In one embodiment, the first snap-fit ​​structure is configured as a snap-fit ​​protrusion, and the second snap-fit ​​structure is configured as a snap-fit ​​groove, wherein the snap-fit ​​protrusion is snapped into the snap-fit ​​groove.

[0008] In one embodiment, the side surface of the snap-fit ​​protrusion away from the connecting segment is configured as a first guide slope, and the first guide slope is inclined in a direction away from the connecting segment and in a direction close to the central axis of the connecting pipe;

[0009] And / or, the side surface of the snap-fit ​​protrusion facing the connecting segment is configured as a second guide slope, the second guide slope being inclined along the direction close to the connecting segment and the direction close to the central axis of the connecting pipe.

[0010] In one embodiment, the insertion segment is provided with a first positioning structure, and the socket segment is provided with a second positioning structure. The first positioning structure and the second positioning structure cooperate to limit the nozzle in the circumferential direction of the insertion segment.

[0011] In one embodiment, the first positioning structure is configured as one of a limiting groove and a limiting protrusion, and the second positioning structure is configured as the other of the limiting groove and the limiting protrusion, wherein the limiting protrusion is disposed in the limiting groove.

[0012] In one embodiment, the nozzle assembly further includes a sealing ring, which is sleeved on the insertion section and sandwiched between the connecting pipe and the nozzle;

[0013] And / or, a limiting step is provided between the connecting segment and the plug segment, facing one side of the plug segment, and the limiting step is disposed opposite to the end face of the socket segment.

[0014] In one embodiment, when the nozzle assembly includes a sealing ring, the outer wall of the insertion section is provided with a mounting groove, the mounting groove extending circumferentially along the insertion section, and the sealing ring is disposed in the mounting groove;

[0015] And / or, when the nozzle assembly includes a sealing ring and the connecting pipe is provided with a limiting step, the sealing ring is sandwiched between the end face of the sleeve section and the limiting structure.

[0016] In one embodiment, the insertion segment includes a plurality of elastic latches, the plurality of elastic latches being spaced apart circumferentially along the insertion segment, and the second snap-fit ​​structure being arranged circumferentially around the sleeve segment to snap-fit ​​with the plurality of elastic latches; or, the inner wall of the sleeve segment is provided with a plurality of second snap-fit ​​structures corresponding one-to-one with the plurality of elastic latches.

[0017] And / or, a guide wire structure is provided on the outer side of the nozzle body outlet, and the guide wire structure is provided with a guide wire groove.

[0018] This utility model also proposes a welding gun module, including a welding gun and a nozzle assembly as described in any of the foregoing embodiments, wherein the connecting pipe of the nozzle assembly is connected to the welding gun.

[0019] This utility model also proposes a laser processing device, including the aforementioned welding gun module.

[0020] The technical solution of this utility model is that the nozzle assembly is provided with a connecting tube for connecting the welding gun and the nozzle. An elastic latch is provided in the insertion section of the connecting tube for engaging with the nozzle. When it is necessary to disassemble and replace the nozzle, the nozzle is inserted and pulled along the length of the connecting tube. The elastic latch can elastically deform towards the central axis of the connecting tube, so as to facilitate the connection or separation of the first and second latching structures, thereby improving the convenience of connecting and disassembling the nozzle and the connecting tube, and making the nozzle easy to replace. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A structural diagram of an embodiment of the nozzle assembly provided by this utility model;

[0023] Figure 2 for Figure 1 Exploded view of the nozzle assembly;

[0024] Figure 3 for Figure 2 Structural diagram of the connecting pipe;

[0025] Figure 4 for Figure 2 Structural diagram of the nozzle;

[0026] Figure 5 This is a structural diagram of an embodiment of the welding gun module provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Welding gun module; 1. Nozzle assembly; 11. Connecting pipe; 111. Connecting section; 112. Insertion section; 1121. Elastic latch; 1122. First snap-fit ​​structure; 1122a. Snap-fit ​​protrusion; 1122b. First guide slope; 1122c. Second guide slope; 1123. First positioning structure; 1123a. Limiting groove; 1124. Mounting groove; 113. Limiting step; 12. Nozzle; 121. Nozzle body; 122. Sleeve section; 1221. Second snap-fit ​​structure; 1221a. Slot; 1222. Second positioning structure; 1222a. Limiting protrusion; 123. Wire guide structure; 1231. Wire guide groove; 13. Sealing ring; 2. Welding gun.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] Currently, laser processing technology is being used more and more widely. Lasers are output from welding torches, and different processing needs can be met by changing the copper nozzle at the torch's output port. For example, different copper nozzles can be used to achieve different processing purposes such as fillet welding, splicing welding, lap welding, stacking welding, cleaning, or cutting. Additionally, when using welding wire for laser welding, different wire feed diameters can be matched by changing the nozzle. However, the copper nozzle is generally fixed to the welding torch by threads, making disassembly and assembly relatively cumbersome when changing it.

[0034] Based on the above problems, this utility model proposes a nozzle assembly 1, which makes the replacement of nozzle 12 more convenient.

[0035] See also Figure 1 and Figure 2 In one embodiment of the present invention, the nozzle assembly 1 includes a connecting pipe 11 and a nozzle 12. The connecting pipe 11 includes a connecting section 111 and a plug section 112 connected to each other. The plug section 112 is provided with at least one elastic latch 1121. The elastic latch 1121 has a first snap-fit ​​structure 1122 on one side surface away from the central axis of the connecting pipe 11. The nozzle 12 includes a nozzle body 121 connected to each other and a sleeve section 122. The sleeve section 122 is sleeved on the plug section 112. The inner wall of the sleeve section 122 is provided with a second snap-fit ​​structure 1221. The second snap-fit ​​structure 1221 engages with the first snap-fit ​​structure 1122.

[0036] The nozzle assembly 1 proposed in this application can be connected to the welding gun 2. The laser output from the welding gun 2 is ejected outward through the nozzle assembly 1 to realize laser processing such as laser welding, laser cutting, and laser cleaning. Different processing operations can be adapted by changing the nozzle 12 of the nozzle assembly 1. For example, different nozzles 12 can be used to realize operations such as fillet welding, splicing welding, lap welding, stacking welding, cleaning, or cutting.

[0037] The nozzle assembly 1 also includes a connecting tube 11 for connecting the welding gun 2 and the nozzle 12. The connecting tube 11 can be made of alloy steel, carbon steel, stainless steel or other materials. The connecting tube 11 includes a connecting section 111 and a plug section 112 connected to each other. The end of the connecting section 111 away from the plug section 112 is used to connect to the welding gun 2. The connecting tube 11 and the welding gun 2 can be connected by threaded connection, snap connection, interference fit, clamp fixation or set screw fastening, etc.; or the connecting tube 11 and the welding gun 2 can be set as an integral structure.

[0038] The insertion section 112 of the connecting tube 11 is used to connect to the nozzle 12. The side wall of the insertion section 112 is provided with an elastic latch 1121, which can be bent and deformed. A first engaging structure 1122 is provided on the elastic latch 1121. The nozzle 12 includes a nozzle body 121 and a sleeve section 122 connected together. A laser exit is provided at the end of the nozzle body 121 away from the sleeve section 122. Optionally, the nozzle body 121 may also be provided with a wire guide groove 1231 for guiding the welding wire. Optionally, the nozzle 12 may be made of copper or other materials.

[0039] The inner wall of the socket section 122 is provided with a second snap-fit ​​structure 1221 for cooperating with the first snap-fit ​​structure 1122. The first snap-fit ​​structure 1122 can be configured as a snap-fit ​​protrusion 1122a, and the second snap-fit ​​structure 1221 can be configured as a slot 1221a. During the process of inserting the plug section 112 into the socket section 122, the snap-fit ​​protrusion 1122a is squeezed by the inner wall of the socket section 122, causing the elastic latch 1121 to bend towards the central axis of the plug section 112. When the snap-fit ​​protrusion 1122a reaches the position of the slot 1221a, the elastic latch 1121 rebounds and limits the snap-fit ​​protrusion 1122a in the slot 1221a, so as to prevent the plug section 112 from exiting outward.

[0040] Alternatively, the first snap-fit ​​structure 1122 can be configured as a first snap-fit ​​protrusion, and the second snap-fit ​​structure 1221 can be configured as a second snap-fit ​​protrusion. During the process of inserting the plug segment 112 into the sleeve segment 122, the first snap-fit ​​structure 1122 is squeezed by the second snap-fit ​​protrusion, causing the elastic latch 1121 to bend towards the central axis of the plug segment 112. After the snap-fit ​​protrusion 1122a passes the second snap-fit ​​protrusion, the elastic latch 1121 rebounds. At this time, the second snap-fit ​​protrusion can restrict the first snap-fit ​​protrusion from exiting, thereby preventing the plug segment 112 from exiting outward.

[0041] Alternatively, the first snap-fit ​​structure 1122 can be configured as a snap-fit ​​groove, and the second snap-fit ​​structure 1221 can be configured as a protrusion. During the process of inserting the plug section 112 into the sleeve section 122, the second snap-fit ​​structure 1221 squeezes the elastic latch 1121, causing the elastic latch 1121 to bend towards the central axis of the plug section 112. When the first snap-fit ​​structure 1122 moves to the position of the second snap-fit ​​structure 1221, the elastic latch 1121 rebounds, causing the snap-fit ​​protrusion 1122a to enter the slot 1221a, which can also lock the nozzle 12 and the connecting pipe 11 together.

[0042] When it is necessary to separate the nozzle 12 from the connecting pipe 11, simply pull the nozzle 12 outward. During this process, the elastic latch 1121 is compressed and bent, causing the first latching structure 1122 to separate from the second latching structure 1221, thus allowing the nozzle 12 to detach from the connecting pipe 11. Optionally, the elastic latch 1121 can extend axially along the insertion section 112 or circumferentially along the insertion section 112.

[0043] That is, in the technical solution of this utility model, the nozzle assembly 1 is provided with a connecting tube 11 for connecting the welding gun 2 and the nozzle 12. An elastic latch 1121 is provided in the insertion section 112 of the connecting tube 11 for engaging with the nozzle 12. When it is necessary to disassemble or assemble the nozzle 12, the nozzle 12 is inserted or pulled along the length direction of the connecting tube 11. The elastic latch 1121 can elastically deform towards the central axis of the connecting tube 11, so as to facilitate the connection or separation of the first latching structure 1122 and the second latching structure 1221, thereby improving the convenience of connecting and separating the nozzle 12 and the connecting tube 11, and making the nozzle 12 easy to replace.

[0044] Please see Figure 3 In one embodiment, the elastic latch 1121 extends axially along the insertion section 112. This arrangement allows the elastic latch 1121 to bend and deform axially within the insertion section 112, in the same direction as the connection and separation of the nozzle 12 and the connecting pipe 11, thus enabling the elastic latch 1121 to bend and deform more effectively under stress.

[0045] Please see Figure 3In one embodiment, the insertion segment 112 includes a plurality of elastic latches 1121, which are spaced apart circumferentially along the insertion segment 112. A second engaging structure 1221 is arranged circumferentially around the sleeve segment 122 to engage with the plurality of elastic latches 1121. Alternatively, the inner wall of the sleeve segment 122 is provided with a plurality of second engaging structures 1221 corresponding one-to-one with the plurality of elastic latches 1121.

[0046] In this embodiment, a plurality of elastic latches 1121 arranged circumferentially are provided in the insertion section 112. A second latching structure 1221 can be provided circumferentially around the sleeve section 122, and the second latching structure 1221 engages with each elastic latch 1121. Alternatively, a plurality of second latching structures 1221 can be provided to engage with a plurality of elastic latches 1121 in a one-to-one correspondence. Thus, during the process of the insertion section 112 entering and exiting the sleeve section 122, the plurality of elastic latches 1121 bend and deform and retract into each other, further improving the smoothness of the process of the insertion section 112 entering and exiting the sleeve section 122. Furthermore, through the engagement of the first latching structure 1122 on the plurality of elastic latches 1121 with the nozzle 12, the connection strength between the nozzle 12 and the connecting tube 11 can be improved, and the circumferential force on the nozzle 12 can be balanced, which is beneficial to make the nozzle 12 and the connecting tube 11 centered and coaxial, so that the laser can be collimated through the connecting tube 11 and the nozzle 12.

[0047] See also Figure 3 and Figure 4 In one embodiment, the first snap-fit ​​structure 1122 is configured as a snap-fit ​​protrusion 1122a, and the second snap-fit ​​structure 1221 is configured as a snap-fit ​​groove 1221a, with the snap-fit ​​protrusion 1122a snapped into the snap-fit ​​groove 1221a.

[0048] In this embodiment, the first snap-fit ​​structure 1122 is configured as a snap-fit ​​protrusion 1122a, and the second snap-fit ​​structure 1221 is configured as a slot 1221a. During the insertion of the insertion section 112 into the sleeve section 122, the snap-fit ​​protrusion 1122a is squeezed by the inner wall of the sleeve section 122, causing the elastic latch 1121 to bend toward the central axis of the insertion section 112. When the snap-fit ​​protrusion 1122a reaches the position of the slot 1221a, the elastic latch 1121 rebounds, limiting the snap-fit ​​protrusion 1122a in the slot 1221a, so that the nozzle 12 and the connecting pipe 11 are locked together, preventing the insertion section 112 and the sleeve section 122 from separating.

[0049] Please see Figure 3 In one embodiment, the side surface of the snap-fit ​​protrusion 1122a away from the connecting section 111 is configured as a first guide slope 1122b, which is inclined along the direction away from the connecting section 111 and the direction close to the central axis of the connecting tube 11.

[0050] In this embodiment, by setting the first guide slope 1122b, during the process of inserting the plug section 112 of the connecting tube 11 into the sleeve section 122 of the nozzle 12, the end face of the plug section 112 or the second snap-fit ​​protrusion abuts against the first guide slope 1122b and slides along the first guide slope 1122b to squeeze the elastic latch 1121, causing the elastic latch 1121 to bend and deform, reducing the resistance encountered by the plug section 112 during the insertion into the sleeve section 122, so that the plug section 112 can be inserted into the sleeve section 122 more smoothly, so as to facilitate the connection between the nozzle 12 and the connecting tube 11.

[0051] Please see Figure 3 In one embodiment, the side surface of the snap-fit ​​protrusion 1122a facing the connecting section 111 is configured as a second guide slope 1122c, and the second guide slope 1122c is inclined along the direction close to the connecting section 111 and the direction close to the central axis of the connecting pipe 11.

[0052] In this embodiment, by setting the second guide slope 1122c, during the process of separating the nozzle 12 from the connecting pipe 11, the second snap-fit ​​protrusion or the groove wall of the snap-fit ​​groove 1221a abuts against the second guide slope 1122c and slides along the second guide slope 1122c to squeeze the elastic snap-fit ​​tongue 1121, causing the elastic snap-fit ​​tongue 1121 to bend and deform, thereby disengaging the first snap-fit ​​structure 1122 from the second snap-fit ​​structure 1221, reducing the resistance encountered when separating the first snap-fit ​​structure 1122 and the second snap-fit ​​structure 1221, and facilitating the separation of the nozzle 12 from the connecting pipe 11.

[0053] See also Figure 3 and Figure 4 In one embodiment, the insertion section 112 is provided with a first positioning structure 1123, and the socket section 122 is provided with a second positioning structure 1222. The first positioning structure 1123 and the second positioning structure 1222 cooperate to limit the nozzle 12 in the circumferential direction of the insertion section 112.

[0054] In this embodiment, the positioning cooperation of the first positioning structure 1123 and the second positioning structure 1222 can limit the nozzle 12 in the circumferential direction of the insertion section 112, preventing the nozzle 12 from rotating relative to the insertion section 112. Furthermore, some welding operations require adding welding wire to the welding area, necessitating the provision of a wire guide groove 1231 on the nozzle 12. The first positioning structure 1123 and the second positioning structure 1222 ensure that when different nozzles 12 are replaced, each nozzle 12 can be connected to the connecting pipe 11 at the required installation angle. This ensures that the wire guide groove 1231 is always in the same position when different nozzles 12 are replaced, thus fixing the wire feeding position, guaranteeing processing results, and facilitating use.

[0055] Optionally, the first positioning structure 1123 and the positioning structure can be configured as a mating structure of a positioning post and a positioning hole. For example, one of the positioning post and the positioning hole can be provided on the end face of the sleeve section 122, and a limiting step 113 facing the nozzle 12 can be provided on the outside of the connecting pipe 11. The limiting step 113 is provided with the other of the positioning post and the positioning hole. When the nozzle 12 is sleeved with the connecting pipe 11, the positioning post is inserted into the positioning hole. Alternatively, the first positioning structure 1123 and the second positioning structure 1222 can be configured as coaxial pin holes, and positioning is achieved by a positioning pin passing through the pin holes of the sleeve section 122 and the insertion section 112. In addition, the first positioning structure 1123 and the second positioning structure 1222 can be configured as a mating structure of a limiting groove 1123a and a limiting protrusion 1222a. For specific implementation, please refer to the following embodiment, which will not be repeated here.

[0056] See also Figure 3 and Figure 4 In one embodiment, the first positioning structure 1123 is configured as one of the limiting groove 1123a and the limiting protrusion 1222a, and the second positioning structure 1222 is configured as the other of the limiting groove 1123a and the limiting protrusion 1222a, with the limiting protrusion 1222a disposed in the limiting groove 1123a.

[0057] In this embodiment, a limiting groove 1123a can be provided on the outer wall of the insertion section 112, and a limiting protrusion 1222a can be provided on the inner wall of the sleeve section 122. When the insertion section 112 is inserted into the sleeve section 122, the limiting protrusion 1222a is limited in the limiting groove 1123a. Alternatively, a limiting protrusion 1222a can be provided on the outer wall of the insertion section 112, and a limiting groove 1123a can be provided on the inner wall of the sleeve section 122. Similarly, the limiting protrusion 1222a is limited in the limiting groove 1123a. Both methods can limit the nozzle 12 in the circumferential direction, so that the nozzle 12 is installed on the connecting pipe 11 at the required angle.

[0058] Please see Figure 1 and Figure 2 In one embodiment, the nozzle assembly 1 further includes a sealing ring 13, which is sleeved on the insertion section 112 and sandwiched between the connecting pipe 11 and the nozzle 12.

[0059] In this embodiment, a sealing ring 13 is provided between the connecting pipe 11 and the nozzle 12 to seal the gap at the connection position of the connecting pipe 11 and the nozzle 12, thereby improving the sealing performance of the connection position and preventing problems such as air leakage and light leakage at the connection position of the connecting pipe 11 and the nozzle 12.

[0060] Optionally, the sealing ring 13 can be sandwiched between the outer wall of the insertion section 112 and the inner wall of the sleeve section 122, or a limiting step 113 facing the nozzle 12 can be provided on the outside of the connecting pipe 11, so that the sealing ring 13 is sandwiched between the limiting step 113 and the end face of the sleeve section 122. There is no limitation here.

[0061] Please see Figure 2 In one embodiment, the outer wall of the plug segment 112 is provided with a mounting groove 1124, which extends circumferentially along the plug segment 112, and the sealing ring 13 is provided in the mounting groove 1124.

[0062] In this embodiment, the sealing ring 13 is limited in the mounting groove 1124, which can keep the relative position of the sealing ring 13 stable, avoid the sealing ring 13 from moving or deviating along the axial direction of the insertion section 112, and ensure that the sealing ring 13 can stably seal the connection position between the connecting pipe 11 and the nozzle 12, thus ensuring the sealing effect.

[0063] Please see Figure 1 and Figure 2 In one embodiment, a limiting step 113 is provided between the connecting section 111 and the plug-in section 112, facing the plug-in section 112. The limiting step 113 is disposed opposite to the end face of the socket section 122.

[0064] In this embodiment, the limiting step 113 can be used to limit the sleeve length of the plug section 112 and the sleeve section 122 to ensure that the assembled nozzle assembly 1 maintains the required length. Furthermore, the locking engagement of the first locking structure 1122 and the second locking structure 1221, along with the engagement of the limiting step 113, enhances the axial limiting strength of the nozzle 12 and the connecting pipe 11, preventing the nozzle 12 and the connecting pipe 11 from shifting or misaligning in the axial direction, thereby improving the structural stability of the nozzle assembly 1.

[0065] Optionally, the nozzle 12 can directly abut against the limiting step 113; or, the nozzle assembly 1 may also include a sealing ring 13, which can be sandwiched between the limiting step 113 and the end face of the sleeve section 122 to improve sealing performance and avoid problems such as air leakage or light leakage.

[0066] Please see Figure 4 In one embodiment, a guide wire structure 123 is provided on the outer side of the nozzle body 121 outlet, and the guide wire structure 123 is provided with a guide wire groove 1231.

[0067] When the nozzle assembly 1 is applied to laser welding, some welding operations require the addition of welding wire to the welding area. By providing a wire guide groove 1231 on the nozzle 12, the welding wire can pass through the wire guide groove 1231 to guide the feeding direction of the welding wire and ensure that the welding wire is accurately fed to the welding area.

[0068] Please see Figure 5 This utility model also proposes a welding gun module 100, which includes a welding gun 2 and a nozzle assembly 1. The specific structure of the nozzle assembly 1 is as described in the above embodiments. The connecting pipe 11 of the nozzle assembly 1 is connected to the welding gun 2. Since the welding gun module 100 proposed by this utility model adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0069] Optionally, the connecting pipe 11 and the welding gun 2 can be connected by thread, snap-fit, interference fit, clamp, or set screw; or the connecting pipe 11 and the welding gun 2 can be set as an integral structure.

[0070] This utility model also proposes a laser processing device, which includes the welding gun module 100 of the aforementioned embodiment. The specific structure of the welding gun module 100 is as described in the aforementioned embodiment. The laser processing device can be used to perform laser welding, laser cutting, laser cleaning, and other laser processing operations. Furthermore, by changing the nozzle 12 of the nozzle assembly 1, it can be adapted to different processing operations. For example, different nozzles 12 can be used to perform fillet welding, splicing welding, lap welding, stacking welding, cleaning, or cutting operations. In addition, in some embodiments, during laser welding, the laser processing device feeds welding wire to the welding area, and the nozzle 12 is correspondingly provided with a wire guide groove 1231 for guiding the direction of wire feeding. The nozzle 12 with a corresponding size wire guide groove 1231 can be replaced according to the diameter of the welding wire used.

[0071] Optionally, the laser processing apparatus may also include a laser host and an optical fiber. The laser host is used to generate laser light, and the optical fiber is connected to both the laser host and the welding gun 2 for transmitting the laser light. Optionally, the laser processing apparatus may also include a wire feeding assembly for conveying welding wire to the welding area.

[0072] Optionally, the welding gun module 100 in the laser processing device can be used by hand, or a translation component and a lifting component can be set in the laser processing device to connect with the welding gun module 100 to drive the welding gun module 100 to move and realize CNC automatic processing.

[0073] Since the laser processing device proposed in this utility model adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0074] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A nozzle assembly, characterized in that, include: A connecting pipe, comprising a connecting section and a plug-in section connected to each other, the plug-in section having at least one elastic latch, and the elastic latch having a first snap-fit ​​structure on its surface opposite to the central axis of the connecting pipe; and The nozzle includes a nozzle body and a sleeve section connected to each other. The sleeve section is sleeved on the insertion section. The inner wall of the sleeve section is provided with a second snap-fit ​​structure, which engages with the first snap-fit ​​structure.

2. The nozzle assembly as claimed in claim 1, characterized in that, The first snap-fit ​​structure is configured as a snap-fit ​​protrusion, and the second snap-fit ​​structure is configured as a snap-fit ​​groove, wherein the snap-fit ​​protrusion is snapped into the snap-fit ​​groove.

3. The nozzle assembly as claimed in claim 2, characterized in that, The side surface of the snap-fit ​​protrusion away from the connecting section is configured as a first guide slope, and the first guide slope is inclined in a direction away from the connecting section and in a direction close to the central axis of the connecting pipe. And / or, the side surface of the snap-fit ​​protrusion facing the connecting segment is configured as a second guide slope, the second guide slope being inclined along the direction close to the connecting segment and the direction close to the central axis of the connecting pipe.

4. The nozzle assembly as claimed in claim 1, characterized in that, The insertion section is provided with a first positioning structure, and the socket section is provided with a second positioning structure. The first positioning structure and the second positioning structure cooperate to limit the nozzle in the circumferential direction of the insertion section.

5. The nozzle assembly as claimed in claim 4, characterized in that, The first positioning structure is configured as one of a limiting groove and a limiting protrusion, and the second positioning structure is configured as the other of the limiting groove and the limiting protrusion, wherein the limiting protrusion is disposed in the limiting groove.

6. The nozzle assembly as claimed in claim 1, characterized in that, The nozzle assembly also includes a sealing ring, which is sleeved on the insertion section and sandwiched between the connecting pipe and the nozzle; And / or, a limiting step is provided between the connecting segment and the plug segment, facing one side of the plug segment, and the limiting step is disposed opposite to the end face of the socket segment.

7. The nozzle assembly as claimed in claim 6, characterized in that, When the nozzle assembly includes a sealing ring, the outer wall of the insertion section is provided with a mounting groove, the mounting groove extends circumferentially along the insertion section, and the sealing ring is disposed in the mounting groove; And / or, when the nozzle assembly includes a sealing ring and the connecting pipe is provided with a limiting step, the sealing ring is sandwiched between the end face of the sleeve section and the limiting structure.

8. The nozzle assembly as described in any one of claims 1 to 7, characterized in that, The insertion segment includes a plurality of elastic latches, which are spaced apart circumferentially along the insertion segment. The second snap-fit ​​structure is arranged circumferentially around the sleeve segment to snap-fit ​​with the plurality of elastic latches. Alternatively, the inner wall of the sleeve segment is provided with a plurality of second snap-fit ​​structures corresponding one-to-one with the plurality of elastic latches. And / or, a guide wire structure is provided on the outer side of the nozzle body outlet, and the guide wire structure is provided with a guide wire groove.

9. A welding torch module, characterized in that, It includes a welding torch and a nozzle assembly as described in any one of claims 1 to 8, wherein the connecting tube of the nozzle assembly is connected to the welding torch.

10. A laser processing apparatus, characterized in that, Includes the welding gun module as described in claim 9.

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