Laser welding device and laser welding system

Abstract

The utility model discloses a device for laser welding and a laser welding system.The device comprises a box body and a clamp, the box body comprises a body and a light-transmitting cover plate, the body is provided with an air hole and a groove with an opening in one end, the body is covered with the light-transmitting cover plate and blocks the opening, and the body and the light-transmitting cover plate are connected in a sealed mode to define a containing space; the body is provided with a containing space, the air hole is communicated with the containing space and used for being communicated with a vacuumizing device, the light-transmitting cover plate is used for allowing laser to penetrate through, the clamp is located in the containing space and comprises two oppositely-arranged clamping pieces, the two clamping pieces are installed on the two opposite groove walls of the body respectively, and the clamp is used for clamping and fixing a workpiece to be welded. The problem that the welding yield is low due to the fact that yellow or black smoke dust can be generated when aluminum alloy, nickel-plated steel and other materials are welded in shielding gas in the prior art is solved, and the welding device has the advantages of being simple in structure and high in welding yield.

Description

Technical Field

[0001] The present application belongs to the field of laser technology, and in particular relates to a laser welding device and a laser welding system. Background Art

[0002] During the laser welding process, in order to prevent oxidation at the welding joint, a protective gas such as argon or nitrogen is blown during the welding process. However, some materials such as aluminum alloy and nickel-plated steel will produce yellow or black smoke after blowing the protective gas, which affects the welding effect and reduces the yield rate. Utility Model Content

[0003] The embodiments of the present application provide a laser welding device and a laser welding system to solve the problem that the existing welding of materials such as aluminum alloy and nickel-plated steel in a protective gas will produce yellow or black smoke, resulting in a low welding yield.

[0004] In a first aspect, an embodiment of the present application provides a laser welding device, comprising:

[0005] The box body comprises a main body and a light-transmitting cover plate, wherein the main body is provided with an air hole, the main body is provided with a groove with one end open, the light-transmitting cover plate covers the main body and blocks the opening, the main body and the light-transmitting cover plate are sealed and connected to form a receiving space, the air hole is communicated with the receiving space, the air hole is used to communicate with the vacuum device, and the light-transmitting cover plate is used to allow the laser to pass through;

[0006] The clamp is located in the receiving space and comprises two clamping members arranged opposite to each other. The two clamping members are respectively installed on two opposite groove walls of the body. The clamp is used to clamp and fix the workpiece to be welded.

[0007] Optionally, both of the two clamping members include:

[0008] Splints;

[0009] A driving mechanism is connected to the clamping plate, the driving mechanism is fixedly connected to the groove wall of the main body, and the driving mechanism is used to drive the clamping plate to move.

[0010] Optionally, the driving mechanism includes:

[0011] A first fixing member is mounted on the groove wall of the body, wherein the first fixing member is provided with a slide groove, and the slide groove extends along the height direction of the body;

[0012] An adjusting member, mounted on the first fixing member, the adjusting member being threadedly connected to the first fixing member, and an end of the adjusting member being located in the sliding groove;

[0013] The scissors-fork assembly, the adjusting member and the clamping plate are respectively connected to the scissors-fork assembly, and the scissors-fork assembly is driven by the adjusting member to drive the clamping plate to move.

[0014] Optionally, the scissor fork assembly includes:

[0015] Two scissor fork mechanisms, the two scissor fork mechanisms are arranged with relative spacing, each of the scissor fork mechanisms includes a first fork beam and a second fork beam that are cross-arranged and switched, the first fork beam includes a first end and a third end, the second fork beam includes a second end and a fourth end, the first end and the second end are located on the same side, the third end and the fourth end are located on the same side, the second end is closer to the bottom of the groove of the body than the first end, the third end is closer to the bottom of the groove of the body than the fourth end, the second end is switched with the groove wall of the body, the third end is rotatably connected with the clamping plate, and the fourth end is slidably connected with the clamping plate;

[0016] The first connecting rod is located between the two scissor fork mechanisms, the first connecting rod connects the first ends of the two first fork beams, the first connecting rod portion is located in the slide groove, the adjusting member is fixedly connected to the first connecting rod, and the adjusting member is used to drive the first connecting rod to move in the slide groove.

[0017] Optionally, the scissors fork assembly also includes a second connecting rod and a second fixing member, the second fixing member is arranged on a side of the clamp plate close to the scissors fork assembly, the second connecting rod is located between the two scissors fork mechanisms, the second connecting rod is connected to the third ends of the two second fork beams, the second fixing member has a sliding groove, and the second connecting rod is located in the sliding groove.

[0018] Optionally, the first fixing member includes a fixing block, one side of which is fixedly connected to a groove wall on one side of the main body, the fixing block is provided with the sliding groove passing through both sides of the fixing block, and the side of the fixing block close to the light-transmitting cover is provided with a screw hole for the adjusting member to pass through.

[0019] Optionally, the adjusting member includes a connected screw and a handle, the screw is threadedly connected to the first fixing member, and the handle is arranged at one end of the screw close to the light-transmitting cover plate.

[0020] Optionally, a buffer pad is provided on a side of the clamping plate facing away from the driving mechanism.

[0021] Optionally, a heating mechanism is further included, which is arranged on a side of the main body away from the light-transmitting cover plate, and the main body is in contact with the heating mechanism.

[0022] In a second aspect, an embodiment of the present application further provides a laser welding system, comprising:

[0023] Lasers;

[0024] In any one of the above-mentioned laser welding devices, the laser emitting end of the laser is arranged opposite to the light-transmitting cover plate;

[0025] The vacuum pumping device is connected to the box body, and the vacuum pumping device is communicated with the air hole.

[0026] The laser welding device and laser welding system provided in the embodiments of the present application, the laser welding device includes a box and a clamp, the box includes a main body and a light-transmitting cover plate, the main body is provided with air holes, the light-transmitting cover plate is sealed and connected to the main body to form a receiving space, the clamp is located in the box, the workpiece to be welded is fixed in the box by the clamp, the air holes are connected to an external vacuum pumping device, the box is vacuumed to realize laser welding operation under vacuum, the existing welding of aluminum alloy, nickel-plated steel and other materials in a protective gas will produce yellow or black smoke, resulting in low welding yield problem, has the advantages of simple structure and high welding yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0028] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0029] Figure 1 A stereoscopic diagram of a first form of a laser welding device provided in an embodiment of the present application.

[0030] Figure 2 A stereoscopic diagram of a second form of the laser welding device provided in an embodiment of the present application.

[0031] Figure 3 This is a schematic diagram of the main body and internal structure of the laser welding device provided in an embodiment of the present application.

[0032] Figure 4 for Figure 3 Top view of the .

[0033] Figure 5 for Figure 4 Middle AA section view.

[0034] Figure 6 This is a schematic diagram of the structure of a clamping member in a laser welding device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0036] The embodiments of the present application provide a laser welding device and a laser welding system to solve the problem that yellow or black smoke is generated when welding aluminum alloy, nickel-plated steel and other materials in a protective gas, resulting in a low welding yield. The following will be described in conjunction with the accompanying drawings.

[0037] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, Figure 1 A three-dimensional diagram of a first form of a laser welding device provided in an embodiment of the present application, Figure 3 This is a schematic diagram of the main body and internal structure of the laser welding device provided in an embodiment of the present application. Figure 4 for Figure 3 A top view of Figure 5 for Figure 4 The embodiment of the present application provides a laser welding device, including a box 100 and a fixture 200.

[0038] In this embodiment, the box body 100 includes a main body 110 and a light-transmitting cover plate 120. The main body 110 is a cube. The material of the main body 110 can be a metal material. The main body 110 is provided with a groove 112 with an opening at one end. The light-transmitting cover plate 120 covers the main body 110 and blocks the opening. The material of the light-transmitting cover plate 120 can be glass. The laser beam can be emitted into the main body 110 through the light-transmitting cover plate 120. The light-transmitting cover plate 120 can be made of light-transmitting material as a whole or partially. The light-transmitting cover plate 120 and the main body 110 can be connected by a sealant. The main body 110 and the light-transmitting cover plate 120 are sealed and connected to form a closed receiving space. The main body 110 is provided with an air hole 111, which is connected to the receiving space. The air hole 111 is used to communicate with a vacuum device. When laser welding is performed, the box body 100 can be vacuumed to provide a vacuum welding environment.

[0039] In this embodiment, see Figure 5 As shown, the clamp 200 is located in the receiving space. The clamp 200 includes two clamping members 210 arranged opposite to each other. The two clamping members 210 are respectively installed on two opposite groove walls of the body 110. The clamp 200 is used to clamp and fix the workpiece to be welded.

[0040] It can be understood that when performing laser welding, the welding workpiece is fixed in the receiving space of the box 100 by the clamp 200, and after the transparent cover 120 is sealed and connected to the main body 110, the box 100 is evacuated to provide a vacuum welding environment, thereby overcoming the existing problem of yellow or black smoke generated when welding aluminum alloy, nickel-plated steel and other materials in a protective gas, resulting in a low welding yield, thereby improving the welding yield.

[0041] Based on the above implementation, see Figure 5 As shown, the two clamping members 210 each include a clamping plate 230 and a driving mechanism 220 .

[0042] In this embodiment, the clamping plates 230 of the two clamping members 210 are arranged opposite to each other. The clamping plates 230 can be rectangular plates made of stainless steel with high hardness. The contact area between the rectangular plates and the workpiece to be processed is large, and the fixing effect is good, which can avoid displacement of the workpiece to be welded during welding.

[0043] In this embodiment, the driving mechanism 220 connects the side of the clamping plate 230 away from the other clamping member 210, and the driving mechanism 220 is fixedly connected to the groove wall of the main body 110. The driving mechanism 220 is used to drive the clamping plate 230 to move. The driving mechanisms 220 of the two clamping members 210 respectively drive the corresponding clamping plates 230 to move so that the clamping plates 230 of the two clamping members 210 are relatively far away from or close to each other to clamp or release the workpiece to be welded. It can also clamp and fix workpieces with different sizes for welding. The adjustment operation is convenient and the application range is wide.

[0044] It can be understood that the driving mechanism 220 in the embodiment of the present application can be a driving cylinder, a screw rod or the like.

[0045] Based on the above implementation, see Figure 5 and Figure 6 As shown, Figure 6 The schematic diagram of the structure of the clamping member in the laser welding device provided in the embodiment of the present application is that the driving mechanism 220 includes a first fixing member 221, an adjusting member 222 and a scissor fork assembly 223. The first fixing member 221 is mounted on the groove wall of the body 110, and the first fixing member 221 is provided with a slide groove 2211, and the slide groove 2211 extends along the height direction of the body 110. The adjusting member 222 is mounted on the first fixing member 221, and the adjusting member 222 is threadedly connected to the first fixing member 221. The end of the adjusting member 222 is located in the slide groove 2211, and the adjusting member 222 can be screwed in or out of the slide groove 2211, so that the end of the adjusting member 222 is located at different height positions of the slide groove 2211. The scissor fork assembly 223 connects the adjusting member 222 and the clamping plate 230, and the adjusting member 222 drives the scissor fork assembly 223 to contract or extend, so as to drive the clamping plate 230 to move.

[0046] In this embodiment, the scissor fork assembly 223 and the adjusting member 222 are integrated into one by the first fixing member 221, and the structure is simple. The adjusting member 222 moves along the height direction of the main body 110, driving the scissor fork assembly 223 to contract or extend in a direction perpendicular to the height. The adjustment operation is simple and less space is occupied in the box 100.

[0047] Based on the above implementation, see Figure 6 As shown, the scissor fork assembly 223 includes two scissor fork mechanisms 2231 and a first connecting rod 2238. The two scissor fork mechanisms 2231 are arranged relatively spaced apart. Each scissor fork mechanism 2231 includes a first fork beam 2232 and a second fork beam 2233 that are arranged crosswise and transferred. The first fork beam 2232 includes a first end 2234 and a third end 2235. The second fork beam 2233 includes a second end 2236 and a fourth end 2237. The first end 2234 and the second end 2236 are located on the same side. The third end 2235 The second end 2236 and the fourth end 2237 are located on the same side, the second end 2236 is closer to the bottom of the groove of the main body 110 than the first end 2234, the third end 2235 is closer to the bottom of the groove of the main body 110 than the fourth end 2237, the second end 2236 is connected to the groove wall of the main body 110, and a connecting block is provided on the groove wall of the main body 110, and the connecting block is located below the first fixing member 221, the second end 2236 is rotatably connected to the connecting block, the third end 2235 is rotatably connected to the splint 230, and the fourth end 2237 is slidably connected to the splint 230. The first link 2238 is located between the two scissor fork mechanisms 2231, and the first link 2238 connects the first ends 2234 of the two first fork beams 2232. The first link 2238 is partially located in the slide groove 2211, and the end of the adjusting member 222 is fixedly connected to the first link 2238. The adjusting member 222 is used to drive the first link 2238 to move in the slide groove 2211. The first link 2238 moves toward the bottom of the main body 110 to drive the scissor fork mechanism 2231 to extend, and the clamping plates 230 of the two clamping members 210 are relatively close to clamp and fix the workpiece to be welded. The first link 2238 moves toward the side of the light-transmitting cover plate 120 to drive the scissor fork mechanism 2231 to contract, and the clamping plates 230 of the two clamping members 210 are relatively far away to release the workpiece to be welded, and the adjustment operation is simple.

[0048] Based on the above implementation, see Figure 6 As shown, the scissor fork assembly 223 also includes a second connecting rod 2230 and a second fixing member 2239. The second fixing member 2239 is arranged on the side of the splint close to the scissor fork assembly 223. The second connecting rod 2230 is located between the two scissor fork mechanisms 2231. The second connecting rod 2230 is connected to the third ends 2235 of the two second fork beams 2233. The second fixing member 2239 has a slide groove, and the second connecting rod 2230 is located in the slide groove.

[0049] On the basis of the above embodiment, the scissor fork assembly 223 further includes a support rod, which is located between the two scissor fork mechanisms 2231 and is connected to the intersection of the first fork beam 2232 and the second fork beam 2233. The two scissor fork mechanisms 2231 are supported by the support rod, thereby improving the stability of the scissor fork assembly 223 and providing stable clamping.

[0050] In some embodiments, see Figure 6 As shown, the first fixing member 221 includes a fixing block 2212, which is in the shape of a long strip, and one side of the fixing block 2212 is fixedly connected to a groove wall of one side of the body 110, and the fixing block 2212 is provided with a slide groove 2211 that passes through both sides of the fixing block 2212, and the slide groove 2211 extends along the height direction of the body 110. The fixing block 2212 is provided with a screw hole for the adjustment member 222 to pass through on one side close to the light-transmitting cover plate 120, and the screw hole is connected to the slide groove 2211, and the end of the adjustment member 222 passes through the screw hole and enters the slide groove 2211. The first fixing member 221 has a simple structure and a small temporary space.

[0051] In some embodiments, see Figure 5 and Figure 6 As shown, the adjusting member 222 includes a connected screw rod 2221 and a handle 2222, the screw rod 2221 is threadedly connected to the screw hole of the first fixing member 221, and the handle 2222 is arranged at one end of the screw rod 2221 close to the light-transmitting cover plate 120. The handle 2222 is close to the light-transmitting cover plate 120, which is convenient for users to adjust.

[0052] In some embodiments, see Figure 5 As shown, a buffer pad 240 is provided on the side of the clamp 230 away from the driving mechanism 220. The buffer pad 240 can be made of silicone material. The buffer pad 240 covers the side of the clamp 230. The buffer pad 240 has a certain buffering effect to prevent the clamp 230 from over-clamping and damaging the workpiece to be welded, thereby protecting the workpiece to be welded.

[0053] In some embodiments, see Figure 2 As shown, the laser welding device further includes a heating mechanism 300 , which is disposed on a side of the body 110 away from the light-transmitting cover plate 120 , and the body 110 is in contact with the heating mechanism 300 .

[0054] The heating mechanism 300 in this embodiment includes an electric heating plate, which heats the main body 110 through the heating mechanism 300. After the welding process of the workpiece to be welded is completed, the main body 110 is heated by the heating mechanism 300 to avoid a rapid drop in the temperature of the workpiece to be welded, achieve a slow cooling zone after welding, and improve the welding effect.

[0055] The embodiment of the present application also provides a laser welding system, including a laser and a laser welding device of the above embodiment, wherein the laser emitting end of the laser is arranged opposite to the light-transmitting cover plate 120, the vacuum pumping device is connected to the box body 100, and the vacuum pumping device is connected to the air hole 111, and the box body 100 is evacuated by the vacuum pumping device.

[0056] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0057] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0058] The laser welding device and laser welding system provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technicians in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A laser welding device, characterized in that: include: The box body comprises a main body and a light-transmitting cover plate, wherein the main body is provided with an air hole, the main body is provided with a groove with one end open, the light-transmitting cover plate covers the main body and blocks the opening, the main body and the light-transmitting cover plate are sealed and connected to form a receiving space, the air hole is communicated with the receiving space, the air hole is used to communicate with the vacuum device, and the light-transmitting cover plate is used to allow the laser to pass through; The clamp is located in the receiving space and comprises two clamping members arranged opposite to each other. The two clamping members are respectively installed on two opposite groove walls of the body. The clamp is used to clamp and fix the workpiece to be welded.

2. The laser welding device according to claim 1, characterized in that: The two clamping members each comprise: Splints; A driving mechanism is connected to the clamping plate, the driving mechanism is fixedly connected to the groove wall of the main body, and the driving mechanism is used to drive the clamping plate to move.

3. The laser welding device according to claim 2, characterized in that: The driving mechanism comprises: A first fixing member is mounted on the groove wall of the body, wherein the first fixing member is provided with a slide groove, and the slide groove extends along the height direction of the body; An adjusting member, mounted on the first fixing member, the adjusting member being threadedly connected to the first fixing member, and an end of the adjusting member being located in the sliding groove; The scissors-fork assembly, the adjusting member and the clamping plate are respectively connected to the scissors-fork assembly, and the scissors-fork assembly is driven by the adjusting member to drive the clamping plate to move.

4. The laser welding device according to claim 3, characterized in that: The scissor fork assembly comprises: Two scissor fork mechanisms, the two scissor fork mechanisms are arranged with a relative interval, each of the scissor fork mechanisms includes a first fork beam and a second fork beam that are cross-arranged and transferred, the first fork beam includes a first end and a third end, the second fork beam includes a second end and a fourth end, the first end and the second end are located on the same side, the third end and the fourth end are located on the same side, the second end is closer to the bottom of the groove of the body than the first end, the third end is closer to the bottom of the groove of the body than the fourth end, the second end is transferred to the groove wall of the body, the third end is rotatably connected to the clamping plate, and the fourth end is slidably connected to the clamping plate; The first connecting rod is located between the two scissor fork mechanisms, the first connecting rod connects the first ends of the two first fork beams, the first connecting rod portion is located in the slide groove, the adjusting member is fixedly connected to the first connecting rod, and the adjusting member is used to drive the first connecting rod to move in the slide groove.

5. The laser welding device according to claim 4, characterized in that: The scissors fork assembly also includes a second connecting rod and a second fixing member, the second fixing member is arranged on a side of the clamping plate close to the scissors fork assembly, the second connecting rod is located between the two scissors fork mechanisms, the second connecting rod is connected to the third ends of the two second fork beams, the second fixing member has a sliding groove, and the second connecting rod is located in the sliding groove.

6. The laser welding device according to claim 3, characterized in that: The first fixing member includes a fixing block, one side of which is fixedly connected to a groove wall on one side of the body, the fixing block is provided with the sliding grooves passing through both sides of the fixing block, and the side of the fixing block close to the light-transmitting cover is provided with a screw hole for the adjusting member to pass through.

7. The laser welding device according to claim 3, characterized in that: The adjusting member comprises a connected screw rod and a handle, the screw rod is threadedly connected to the first fixing member, and the handle is arranged at one end of the screw rod close to the light-transmitting cover plate.

8. The laser welding device according to claim 2, characterized in that: A buffer pad is provided on a side of the clamping plate away from the driving mechanism.

9. The laser welding device according to claim 1, characterized in that: It also includes a heating mechanism, which is arranged on a side of the main body away from the light-transmitting cover plate, and the main body is in contact with the heating mechanism.

10. A laser welding system, characterized in that: include: Lasers; The laser welding device according to any one of claims 1 to 9, wherein the laser emitting end of the laser is arranged opposite to the light-transmitting cover plate; The vacuum pumping device is connected to the box body, and the vacuum pumping device is communicated with the air hole.

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