Pressure head assembly and equipment for laser welding

Abstract

The utility model discloses a pressure head assembly and equipment for laser welding, the pressure head assembly for laser welding comprises a pressure head mounting block and a pressure head, the pressure head mounting block is provided with a first through hole, the inner wall of the first through hole is provided with an elastic piece, and at least part of the elastic piece is located in the first through hole; the pressing head is used for pressing the bus bar on the junction box, a second through hole penetrating through the pressing head is formed in the pressing head, and the laser beam penetrates through the second through hole; wherein the top of the pressing head enters the first through hole from the bottom of the first through hole, the edge of the top of the first through hole extends towards the interior of the first through hole to form a blocking part, the top of the pressing head abuts against the blocking part, and the elastic piece elastically abuts against the outer side wall of the pressing head to fix the pressing head. According to the technical scheme, the pressing head can be rapidly disassembled and assembled, and the time needed for replacing the pressing head is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of laser welding, and in particular to a pressure head assembly and equipment for laser welding. Background Art

[0002] Laser welding is an important aspect of laser processing technology application. It is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. By using a continuous or pulsed laser beam to locally heat a small area of ​​the material, the energy is expanded to the inside of the material through heat conduction, and the welding material and the welded material are melted before welding. The advantages of laser welding are precise control, high welding quality and easy automation.

[0003] The essence of laser welding is to hot-melt weld two welding materials, and the two welding materials need to be pressed tightly during the welding process. In view of the pressing requirements of laser welding, the junction box laser welding equipment needs a pressure head to press the junction box and the bus bar to ensure that the junction box and the bus bar fit together. The laser welding effect is proportional to the pressing effect. Therefore, due to repeated pressing of the pressure head, material wear and contamination of the pressure head by laser welding spatter, the pressure head needs to be replaced regularly. In addition, the pressure head is subjected to stress for a long time, causing the screws to deform under stress, making disassembly difficult.

[0004] Therefore, it is urgent to propose a new pressure head assembly and equipment for laser welding, which can facilitate and quickly replace the pressure head to reduce the time required for replacing the pressure head. Utility Model Content

[0005] The utility model provides a pressure head assembly and equipment for laser welding, which are convenient for quickly replacing the pressure head, so as to reduce the time required for replacing the pressure head.

[0006] In a first aspect, an embodiment of the utility model provides a pressure head assembly for laser welding, comprising:

[0007] A pressure head mounting block, wherein a first through hole is disposed on the pressure head mounting block, an elastic member is disposed on an inner wall of the first through hole, and the elastic member is at least partially located in the first through hole;

[0008] A pressing head, the pressing head is used to press the busbar onto the junction box, the pressing head is provided with a second through hole penetrating the pressing head, and the second through hole is used for the laser beam to pass through;

[0009] Among them, the top of the pressing head enters the first through hole from the bottom of the first through hole, the top edge of the first through hole extends toward the inside of the first through hole to form a blocking portion, the top of the pressing head abuts against the blocking portion, and the elastic member elastically abuts against the outer side wall of the pressing head to fix the pressing head.

[0010] According to the aforementioned implementation of the first aspect of the utility model, the elastic member includes a ball plunger, a hole for installing the ball plunger is provided on the inner wall of the first through hole, and the ball head of the ball plunger is located in the first through hole.

[0011] According to any of the aforementioned embodiments of the first aspect of the utility model, the pressure head assembly further includes:

[0012] An air flow channel is arranged inside the pressure head mounting block, and an outlet of the air flow channel is arranged above the first through hole;

[0013] A first air knife block, wherein two air outlets are arranged on the first air knife block, and the first air knife block is arranged on the pressure head mounting block and covers the outlet of the air flow channel;

[0014] The air flow channel is used for circulating compressed gas, and the compressed gas flows out from the outlet of the air flow channel, is compressed by the first air knife block, and flows out from the air outlet to form two air knives.

[0015] According to any of the aforementioned embodiments of the first aspect of the utility model, the pressing head comprises a mounting section disposed in the first through hole, a frame, and two pressing claws for pressing the bus bar to the junction box;

[0016] The outer side wall of the mounting section elastically abuts against the elastic member to fix the pressing head, the two pressing claws are arranged opposite to each other and spaced a certain distance apart, and the frame connects the mounting section and the two pressing claws.

[0017] In a second aspect, an embodiment of the utility model provides a device for laser welding, comprising two press head assemblies for laser welding provided by any one of the first aspects of the embodiment of the utility model, wherein the two press head assemblies are arranged in parallel and have a preset spacing.

[0018] According to the aforementioned implementation of the second aspect of the utility model, the device for laser welding further includes:

[0019] Two linear guide rails, each of which comprises a rail and a sliding block that can slide up and down relative to the rail;

[0020] The press head mounting blocks of the two press head assemblies are respectively mounted on the corresponding sliding blocks to achieve synchronous movement of the sliding blocks and the press head mounting blocks.

[0021] According to any of the aforementioned embodiments of the second aspect of the utility model, the device for laser welding further includes:

[0022] Two cylinder assemblies, each of which includes a cylinder and a push rod, the cylinder is used to drive the push rod to move, and the pressure head mounting blocks of the two pressure head assemblies are respectively connected to the corresponding push rods to enable the two cylinder assemblies to push the two pressure head assemblies up and down respectively.

[0023] According to any of the aforementioned embodiments of the second aspect of the utility model, the device for laser welding further includes:

[0024] Two guide rail mounting plates, the two linear guide rails are mounted on the two guide rail mounting plates respectively;

[0025] A spacing adjustment mounting plate, two guide rail mounting plates are mounted on the spacing adjustment mounting plate, one of the guide rail mounting plates is fixed in position, and the other guide rail mounting plate can move relatively to achieve adjustable spacing between the two pressure head assemblies.

[0026] According to any of the aforementioned embodiments of the second aspect of the utility model, the device for laser welding further includes:

[0027] The second wind knife block is arranged above the cylinder assembly and is used to provide an air curtain.

[0028] According to any of the aforementioned embodiments of the second aspect of the utility model, the device for laser welding further includes:

[0029] A visual component, the visual component is used to take pictures before welding to locate the junction box and / or take pictures after welding to evaluate the welding quality;

[0030] A light source assembly is disposed below the visual assembly and is used to provide light required for taking photos.

[0031] According to the embodiment of the utility model, a pressure head assembly for laser welding includes a pressure head mounting block and a pressure head, a first through hole is provided on the pressure head mounting block, an elastic member is provided on the inner wall of the first through hole, and the elastic member is at least partially located in the first through hole; the pressure head is used to press the busbar on the junction box, and a second through hole is provided on the pressure head that penetrates itself, and the second through hole is used for the laser beam to pass through; wherein, the top of the pressure head enters the first through hole from the bottom of the first through hole, and the top edge of the first through hole extends to the inside of the first through hole to form a blocking portion, the top of the pressure head abuts against the blocking portion, and the elastic member elastically abuts against the outer wall of the pressure head to fix the pressure head. The pressure head of the utility model embodiment is provided with a through hole on the pressure head mounting block, and an elastic member is provided in the through hole. The pressure head is directly inserted from the bottom of the through hole and is positioned and fixed by the blocking portion and the elastic member at the top of the through hole. When disassembling, it only needs to be pulled downward to remove the pressure head, and the pressure head is not installed by fasteners such as screws, and no auxiliary tools are required when disassembling, so that the pressure head can be quickly disassembled and installed, reducing the time required for replacing the pressure head. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0033] Figure 1 This is an exploded schematic diagram of a pressure head assembly for laser welding according to an embodiment of the utility model;

[0034] Figure 2 This is an exploded schematic diagram of a pressure head assembly for laser welding according to another embodiment of the utility model;

[0035] Figure 3 This is a schematic structural diagram of a device for laser welding according to an embodiment of the utility model;

[0036] Figure 4 The present invention is a schematic structural diagram of a device for a laser welding machine according to another embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 10-pressing head assembly; 100-pressing head mounting block; 110-first through hole; 120-elastic member; 130-blocking portion; 140-air flow channel;

[0039] 200-pressing head; 210-installing section; 220-frame; 230-pressing claw; 240-second through hole;

[0040] 300-first air knife block;

[0041] 410- linear guide rail; 411- track; 412- sliding block; 420- cylinder assembly; 421- cylinder; 422- push rod; 430- guide rail mounting plate; 440- spacing adjustment mounting plate; 450- second wind knife block; 460- visual assembly; 470- lighting assembly.

[0042] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0046] See also Figure 1 , Figure 2 , Figure 1 An exploded schematic diagram of a pressure head assembly for laser welding according to an embodiment of the utility model, Figure 2This is an exploded schematic diagram of a press head assembly for laser welding according to another embodiment of the utility model. The utility model embodiment provides a press head assembly 10 for laser welding, including a press head mounting block 100 and a press head 200, the press head mounting block 100 is provided with a first through hole 110, an elastic member 120 is provided on the inner wall of the first through hole 110, and the elastic member 120 is at least partially located in the first through hole 110; the press head 200 is used to press the bus bar on the junction box, and the press head 200 is provided with a second through hole 240 that penetrates itself, and the second through hole 240 is used for the laser beam to pass through, so as to weld the bus bar and the junction box. Among them, the top of the press head 200 enters the first through hole 110 from the bottom of the first through hole 110, and the top edge of the first through hole 110 extends to the inside of the first through hole 110 to form a blocking portion, the top of the press head 200 abuts against the blocking portion, and the elastic member 120 elastically abuts against the outer wall of the press head 200 to fix the press head 200.

[0047] In the above embodiment, the top edge of the through hole is arranged to extend toward the inside of the first through hole 110 to form a blocking portion to prevent the ram 200 from falling out of the first through hole 110 due to excessive pressure during use, that is, during the process of pressing the busbar and the junction box downward, the blocking portion abuts against the top of the ram 200 to restrict the ram 200 within the first through hole 110, and the elastic member 120 is at least partially arranged in the first through hole 110 to elastically abut against the outer wall of the ram 200 to fix the ram 200 so that it is not easy to fall off. In the ram assembly 10 of the utility model embodiment, the top of the ram 200 is directly inserted into the first through hole 110 from the bottom of the first through hole 110 during installation, and the ram 200 is directly pulled downward to be pulled out of the first through hole 110 during disassembly. Both installation and disassembly are very convenient, and no auxiliary tools are required, which reduces the time required for replacing the ram 200.

[0048] In some embodiments, the elastic member 120 may be a ball plunger, and a hole for installing the ball plunger is provided on the inner wall of the first through hole 110, and the ball head of the ball plunger is provided in the first through hole 110. It should be noted that in other embodiments, other elastic elements may also be used, and the utility model does not make specific limitations here.

[0049] In some embodiments, the pressure head assembly 10 for laser welding of the utility model may also include an air flow channel 140 and a first air knife block 300 arranged inside the pressure head mounting block 100, the air flow channel 140 is arranged above the first through hole 110, and two air outlets are arranged on the first air knife block 300, wherein the air flow channel 140 is used for compressed gas circulation, the compressed gas flows out from the outlet of the air flow channel 140, and flows out from the air outlet after being compressed by the first air knife block 300, forming two air knives, which are used to blow away the smoke and welding slag formed during the welding process to prevent the laser beam from being blocked and affecting the welding quality.

[0050] In some embodiments, the press head includes a mounting section 210, a frame 220, and two pressing claws 230 for pressing the busbar to the junction box, wherein the mounting section 210 is disposed in the first through hole 110, the outer side wall of the mounting section 210 elastically abuts against the elastic member 120 to fix the press head 200, the two pressing claws 230 are disposed oppositely and spaced a certain distance apart, and the frame 220 connects the mounting section 210 and the two pressing claws 230. Both the mounting section 210 and the frame 220 are hollow for the laser beam to pass through, and the two pressing claws 230 are disposed oppositely and spaced apart, and the spacing is for the laser beam to pass through.

[0051] See also Figure 3 , Figure 4 , FIG. is a schematic structural diagram of a device for laser welding according to an embodiment of the utility model, Figure 4 This is a schematic diagram of the structure of a laser welding machine according to another embodiment of the present invention. The present invention also provides a laser welding device for welding a bus bar and a terminal (or welding spot) on a junction box. The laser welding device according to the present invention comprises two sets of press head assemblies 10 for laser welding according to any of the aforementioned embodiments. The two press head assemblies 10 are arranged in parallel and have a preset spacing. There are usually two welding spots on a junction box. Two sets of press head assemblies 10 are arranged on the laser welding device according to the present invention, and two welding spots can be welded at the same time.

[0052] In some embodiments, the laser welding device of the utility model embodiment may further include two linear guide rails 410, the linear guide rails 410 include rails 411 and sliding blocks 412 that can slide up and down relative to the rails; wherein the press head mounting blocks 100 of the two press head assemblies 10 are respectively mounted on the corresponding sliding blocks 412, so that the sliding blocks 412 and the press head mounting blocks 100 move synchronously. By setting the linear guide rails 410 to fix the moving path of the press head assembly 10, it is ensured that the bus bar and the junction box can be aligned, and the pressing position is ensured to be accurate.

[0053] In some embodiments, the laser welding device of the utility model embodiment may further include two guide rail mounting plates 430 and a spacing adjustment mounting plate 440, and the two linear guide rails 410 are respectively mounted on the two guide rail mounting plates 430; the two guide rail mounting plates 430 are mounted on the spacing adjustment mounting plate 440, one of the guide rail mounting plates 430 is fixed in position, and the other guide rail mounting plate 430 can be relatively moved to achieve adjustable spacing between the two pressure head assemblies 10. The adjustable spacing of the pressure head assemblies 10 can meet the welding requirements of junction boxes of different sizes and the welding requirements under different working conditions.

[0054] In some embodiments, the laser welding device of the embodiment of the utility model may further include two cylinder assemblies 420, the cylinder assembly 420 includes a cylinder 421 and a push rod 422, the cylinder 421 is used to drive the push rod 422 to move, and the press head mounting blocks 100 of the two press head assemblies 10 are respectively connected to the corresponding push rods 422, so that the two cylinder assemblies 420 respectively push the two press head assemblies 10 up and down. In other embodiments, a driving device may also be used to push the press head assembly 10 up and down, and the utility model is not specifically limited here.

[0055] In some embodiments, the laser welding device of the utility model embodiment may further include a second air knife block 450, which is disposed above the cylinder assembly 420 and is used to provide an air curtain. The second air knife block 450 is provided to generate an air curtain to prevent smoke and welding slag from drifting upward during welding and polluting the equipment space.

[0056] In some embodiments, the laser welding device of the utility model may further include a visual component 460, which is used to take photos before welding to locate the junction box and / or take photos after welding to evaluate the welding quality. By setting the visual component 460, the junction box is photographed before welding to confirm the position of the junction box, and the pressure head assembly 10 is controlled to move above the junction box; after welding is completed, the visual component 460 is used to take photos to evaluate the welding quality.

[0057] In some embodiments, the laser welding device of the present invention may further include a light source assembly 470 , which is disposed below the visual assembly 460 and is used to provide light required for taking pictures.

[0058] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made under the concept of the present application using the contents of the present application specification and drawings, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A pressure head assembly for laser welding, characterized in that: include: A pressure head mounting block, wherein a first through hole is disposed on the pressure head mounting block, an elastic member is disposed on an inner wall of the first through hole, and the elastic member is at least partially located in the first through hole; A pressing head, the pressing head is used to press the busbar onto the junction box, the pressing head is provided with a second through hole penetrating the pressing head, and the second through hole is used for the laser beam to pass through; Among them, the top of the pressing head enters the first through hole from the bottom of the first through hole, the top edge of the first through hole extends toward the inside of the first through hole to form a blocking portion, the top of the pressing head abuts against the blocking portion, and the elastic member elastically abuts against the outer side wall of the pressing head to fix the pressing head.

2. The pressure head assembly for laser welding according to claim 1, characterized in that: The elastic member includes a ball plunger, and a hole for installing the ball plunger is arranged on the inner wall of the first through hole, and the ball head of the ball plunger is located in the first through hole.

3. The pressure head assembly for laser welding according to claim 1, characterized in that: Also includes: An air flow channel is arranged inside the pressure head mounting block, and an outlet of the air flow channel is arranged above the first through hole; A first air knife block, wherein two air outlets are arranged on the first air knife block, and the first air knife block is arranged on the pressure head mounting block and covers the outlet of the air flow channel; The air flow channel is used for circulating compressed gas, and the compressed gas flows out from the outlet of the air flow channel, is compressed by the first air knife block, and flows out from the air outlet to form two air knives.

4. The pressure head assembly for laser welding according to claim 1, characterized in that: The pressing head includes a mounting section arranged in the first through hole, a frame, and two pressing claws for pressing the bus bar to the junction box; The outer side wall of the mounting section elastically abuts against the elastic member to fix the pressing head, the two pressing claws are arranged opposite to each other and spaced a certain distance apart, and the frame connects the mounting section and the two pressing claws.

5. A device for laser welding, characterized in that: It comprises two pressure head assemblies for laser welding as claimed in any one of claims 1 to 4, wherein the two pressure head assemblies are arranged side by side and have a preset distance.

6. The laser welding device according to claim 5, characterized in that Also includes: Two linear guide rails, each of which comprises a rail and a sliding block that can slide up and down relative to the rail; The press head mounting blocks of the two press head assemblies are respectively mounted on the corresponding sliding blocks to achieve synchronous movement of the sliding blocks and the press head mounting blocks.

7. The laser welding device according to claim 5, characterized in that Also includes: Two cylinder assemblies, each of which includes a cylinder and a push rod, the cylinder is used to drive the push rod to move, and the pressure head mounting blocks of the two pressure head assemblies are respectively connected to the corresponding push rods to enable the two cylinder assemblies to push the two pressure head assemblies up and down respectively.

8. The laser welding device according to claim 6, characterized in that Also includes: Two guide rail mounting plates, the two linear guide rails are mounted on the two guide rail mounting plates respectively; A spacing adjustment mounting plate, two guide rail mounting plates are mounted on the spacing adjustment mounting plate, one of the guide rail mounting plates is fixed in position, and the other guide rail mounting plate can move relatively to achieve adjustable spacing between the two pressure head assemblies.

9. The laser welding device according to claim 7, characterized in that: Also includes: The second wind knife block is arranged above the cylinder assembly and is used to provide an air curtain.

10. The laser welding device according to claim 5, characterized in that Also includes: A visual component, the visual component is used to take pictures before welding to locate the junction box and / or take pictures after welding to evaluate the welding quality; A light source assembly is disposed below the visual assembly and is used to provide light required for taking photos.

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