An automatic and efficient dust removal device for ultrasonic welding

Abstract

The invention relates to the technical field of battery pole ear welding, and in particular to an automatic and efficient dust removal device for ultrasonic welding, comprising a welding machine base and an ultrasonic welding machine, wherein the ultrasonic welding machine comprises a fuselage, a transducer, a welding head and a welding seat, a battery fixture is arranged at the front end of the ultrasonic welding machine, a battery is placed at the upper end of the battery fixture, a dust removal cover is arranged at the front end of the welding head, a dust removal component and a negative pressure component are arranged in the dust removal cover, a sealing component is arranged at the bottom of the dust removal cover, an outer cover is arranged on the welding seat, a closed welding environment is formed by the sealing component, the dust removal component blows out welding slag by inert gas, and the negative pressure component cleans the welding slag by negative pressure adsorption, and the inert gas is recycled by magnetic adsorption of the welding slag; the problem that the existing equipment has a poor sealing effect when cleaning welding slag, resulting in a small amount of welding slag splashing into the battery to affect the battery performance and cause the battery to be scrapped, and in severe cases, a short circuit is caused to directly affect the safety performance of the battery.

Description

Technical Field

[0001] The invention relates to the technical field of battery tab welding, in particular to an automatic and efficient dust removal device for ultrasonic welding. Background Art

[0002] During the production process of square batteries, the core will be ultrasonically welded according to the process sequence requirements. The purpose is to weld the two electrode groups together through soft connections to form a battery. During the welding process, welding slag dust will be generated. The welding slag dust will fall into the battery, which will affect the battery performance and cause the battery to be scrapped. In severe cases, it will cause a short circuit, which will directly affect the safety performance of the battery. A Chinese invention patent with an application announcement number of CN112388145B discloses a battery core and pole ear welding device and equipment, including: a welding machine mounting plate, a main body, a welding head mounting block, a welding head, a bottom mold, and upper and lower dust suction components, which can realize dust removal on the core surface and tray, ultrasonic welding of the pole ear, and dust removal during the pole ear welding process. At the same time, the core is always in the tray during the circulation process to avoid damage to the core, thereby improving the qualified rate and consistency of the battery; a Chinese invention patent with an application announcement number of CN115383283B discloses an ultrasonic welding dust-proof device, including a support frame, a guide head and a base. The guide head is matched with a gas flow channel and a dust removal flow channel. The dust removal flow channel is connected to the inner cavity. The gas in the gas flow channel blows the welding slag along the direction from the inlet to the welding area, which has the effect of reducing the problem of welding slag splashing to the battery cell and causing failure.

[0003] However, the inventors found that during actual use, the sealing effect of the device when cleaning welding slag is poor, resulting in a small amount of welding slag splashing into the battery, affecting battery performance and causing the battery to be scrapped. In severe cases, a short circuit is caused, which directly affects the safety performance of the battery. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art. A dust removal component and a negative pressure component are arranged in the dust removal hood, a sealing component is arranged at the bottom of the dust removal hood, a closed welding environment is formed by the sealing component, the dust removal component blows out the welding slag by blowing inert gas, and the welding slag is cleaned by negative pressure adsorption through the negative pressure component, and the inert gas is recycled by magnetic adsorption of the welding slag, thereby solving the problem that the existing equipment has poor sealing effect when cleaning welding slag, resulting in a small amount of welding slag splashing into the battery, affecting the battery performance and causing the battery to be scrapped, and in severe cases causing a short circuit directly affecting the safety performance of the battery.

[0005] In view of the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] An automatic and efficient dust removal device for ultrasonic welding comprises a welding machine base and an ultrasonic welder, wherein the ultrasonic welder comprises a body, a transducer, a welding head and a welding seat, a battery fixture is arranged at the front end of the ultrasonic welder, a battery is placed at the upper end of the battery fixture, a dust cover is arranged at the front end of the welding head, a dust removal component and a negative pressure component are arranged in the dust cover, a sealing component is arranged at the bottom of the dust cover, an outer cover is arranged on the welding seat, a closed welding environment is formed by the sealing component, the dust removal component blows out welding slag by inert gas blowing, and the welding slag is cleaned by negative pressure adsorption by the negative pressure component, and the inert gas is recycled by magnetic adsorption of the welding slag.

[0007] Preferably, the dust removal assembly comprises an air blowing head a obliquely arranged in the dust removal hood and an air blowing head b arranged opposite to the air blowing head a, the air blowing head a and the air blowing head b are both connected to an air supply pipe, and the air supply pipe is connected to an inert gas pump.

[0008] Preferably, the negative pressure assembly comprises a negative pressure head a arranged at one side of the welding head and a negative pressure head b arranged opposite to the negative pressure head a, and both the negative pressure head a and the negative pressure head b are connected to the negative pressure channel.

[0009] As a preference, a magnetic suction block is provided between the negative pressure channel and the negative pressure suction head a or the negative pressure suction head b, and the negative pressure channel is connected to an inert gas pump.

[0010] Preferably, the sealing assembly includes an air cushion arranged at the bottom of the dust hood, a cylinder body arranged at the front end of the dust hood, and a piston slidably arranged in the cylinder body, an air supply channel is arranged between the cylinder body and the air cushion, and a spring is arranged between the piston and the cylinder body.

[0011] As a preference, a fixing block is provided on the dust cover, and bolts are provided on the fixing block.

[0012] As a preferred embodiment, the battery fixture is provided with a clamping piece, and the clamping piece is provided with a welding groove.

[0013] As another preferred embodiment, an adjusting screw is provided on the fuselage.

[0014] Beneficial effects of the present invention:

[0015] 1. In the present invention, a dust removal component and a negative pressure component are arranged in the dust removal hood, and a sealing component is arranged at the bottom of the dust removal hood. A closed welding environment is formed by the sealing component. The dust removal component blows out the welding slag by blowing the inert gas, and the welding slag is cleaned by negative pressure adsorption by the negative pressure component. The welding slag is adsorbed by magnetic attraction to recycle the inert gas, which is beneficial to improving the battery performance, yield and safety performance, and the inert gas can be recycled, which is beneficial to saving energy.

[0016] In summary, the equipment has the advantages of improving battery performance, yield and safety performance, saving energy, etc., and is particularly suitable for the field of battery tab welding technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of an automatic and efficient dust removal device for ultrasonic welding;

[0019] Figure 2 for Figure 1 A in the enlarged view;

[0020] Figure 3 It is a structural schematic diagram of an ultrasonic welding machine;

[0021] Figure 4 This is a schematic diagram of the structure of the battery fixture;

[0022] Figure 5 is a cutaway schematic diagram of a dust removal component;

[0023] Figure 6 is a cross-sectional schematic diagram of a negative pressure component;

[0024] Figure 7 This is a working status diagram of the dust removal component;

[0025] Figure 8 This is the working status diagram of the negative pressure component.

[0026] 1. Welding machine base; 2. Ultrasonic welder; 3. Battery fixture; 4. Battery; 5. Dust cover; 6. Dust removal assembly; 7. Negative pressure assembly; 8. Sealing assembly; 9. Outer cover; 21. Body; 22. Transducer; 23. Welding head; 24. Welding seat; 31. Fixing parts; 32. Welding groove; 51. Fixing block; 52. Bolt; 61. Air blowing head a; 62. Air blowing head b; 63. Air supply pipe; 71. Negative pressure suction head a; 72. Negative pressure suction head b; 73. Negative pressure channel; 74. Magnetic suction block; 81. Air cushion; 82. Cylinder body; 83. Piston; 84. Air supply channel; 85. Spring; 211. Adjusting screw. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0028] Embodiment 1

[0029] like Figures 1 to 8 As shown, an automatic and efficient dust removal device for ultrasonic welding includes a welding machine base 1 and an ultrasonic welder 2, wherein the ultrasonic welder 2 includes a body 21, a transducer 22, a welding head 23 and a welding seat 24, a battery fixture 3 is provided at the front end of the ultrasonic welder 2, a battery 4 is placed at the upper end of the battery fixture 3, a dust cover 5 is provided at the front end of the welding head 22, a dust removal component 6 and a negative pressure component 7 are provided in the dust cover 5, a sealing component 8 is provided at the bottom of the dust cover 5, an outer cover 9 is provided on the welding seat 24, a closed welding environment is formed by the sealing component 8, the dust removal component 6 blows out the welding slag by blowing the inert gas, and the welding slag is cleaned by negative pressure adsorption through the negative pressure component 7, and the inert gas is recycled by magnetic adsorption of the welding slag.

[0030] It is worth mentioning here that by arranging a dust removal component 6 and a negative pressure component 7 in the dust removal hood 5, a sealing component 8 is arranged at the bottom of the dust removal hood 5, and a closed welding environment is formed by the sealing component 8. The dust removal component 6 blows out the welding slag by blowing the inert gas, and the welding slag is cleaned by negative pressure adsorption through the negative pressure component 7. The welding slag is adsorbed by magnetic attraction and the inert gas is recycled, which is beneficial to improving the performance, yield and safety performance of the battery 4, and the inert gas can be recycled, which is beneficial to saving energy.

[0031] like Figure 5 As shown, the dust removal assembly 6 includes an air blowing head a61 obliquely arranged in the dust removal cover 5 and an air blowing head b62 arranged opposite to the air blowing head a61, and the air blowing head a61 and the air blowing head b62 are both connected to the air supply pipe 63, and the air supply pipe 63 is connected to the inert gas pump.

[0032] In this example, an inert gas is blown into the air blowing head a61 and the air blowing head b62 through an inert gas pump, and the air blowing head a61 and the air blowing head b62 blow against each other, so that the welding slag remaining on the battery tab and the welding head 23 is blown away; by introducing inert gas, the battery tab is prevented from being denatured during welding, which would affect the use of the battery.

[0033] like Figure 6 As shown, the negative pressure assembly 7 includes a negative pressure suction head a71 arranged on one side of the welding head 23 and a negative pressure suction head b72 arranged opposite to the negative pressure suction head a71, and the negative pressure suction head a71 and the negative pressure suction head b72 are both connected to the negative pressure channel 73.

[0034] In this example, negative pressure is generated by the negative pressure device in the inert gas pump, so that the negative pressure suction head a71 and the negative pressure suction head b72 perform negative pressure adsorption and cleaning on the welding slag blown up by the air blowing head a61 and the air blowing head b62, and the inert gas is sucked back into the inert gas pump for recycling, saving energy and reducing costs.

[0035] like Figure 6As shown, a magnetic suction block 74 is provided between the negative pressure channel 73 and the negative pressure suction head a71 or the negative pressure suction head b72, and the negative pressure channel 73 is connected to the inert gas pump.

[0036] In this example, a magnetic block 74 is provided to absorb welding slag to prevent the welding slag from being sucked into the inert gas pump together with the inert gas, thereby damaging the inert gas pump; the negative pressure channel 73 with the magnetic block 74 can be removed, replaced, and cleaned.

[0037] like Figure 2 , Figure 5 As shown, the sealing assembly 8 includes an air cushion 81 arranged at the bottom of the dust cover 5, a cylinder body 82 arranged at the front end of the dust cover 5, and a piston 83 slidably arranged in the cylinder body 82, an air supply channel 84 is arranged between the cylinder body 82 and the air cushion 81, and a spring 85 is arranged between the piston 83 and the cylinder body 82.

[0038] In this example, when the welding head 23 descends, the piston 83 is driven to descend. When the piston 83 contacts the clamping part 31, it slides into the cylinder body 82. The air in the cylinder body 82 is injected into the air cushion 81 through the air supply channel 84, so that the air cushion 81 swells and fits tightly against the clamping part 31 to form a closed welding environment. By setting a spring 85, the piston 83 is reset after leaving the clamping part 31.

[0039] like Figure 3 As shown, a fixing block 51 is disposed at the upper end of the dust cover 5 , and a bolt 52 is disposed on the fixing block 51 .

[0040] like Figure 4 As shown, the battery fixture 3 is provided with a clamping member 31 , and the clamping member 31 is provided with a welding groove 32 .

[0041] like Figure 3 As shown, the body 21 is provided with an adjusting screw 211 .

[0042] The working process is as follows:

[0043] When the welding head 23 descends, the piston 83 is driven to descend. When the piston 83 contacts the fixture 31, it slides into the cylinder 82. The air in the cylinder 82 is injected into the air cushion 81 through the air supply channel 84, so that the air cushion 81 swells and is close to the fixture 31, forming a closed welding environment.

[0044] Inert gas is blown into the air blowing heads a61 and b62 through an inert gas pump, and the air blowing heads a61 and b62 blow against each other, so that the welding slag remaining on the battery ear and the welding head 23 is blown up, and negative pressure is generated by the negative pressure device in the inert gas pump, so that the negative pressure suction heads a71 and b72 clean the welding slag blown up by the air blowing heads a61 and b62 by negative pressure adsorption, and the inert gas is sucked back into the inert gas pump for recycling, saving energy and reducing costs. The magnetic suction block 74 is provided to adsorb the welding slag to prevent the welding slag from being connected to the inert gas and being sucked into the inert gas pump together, causing damage to the inert gas pump.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An automatic high-efficiency dust removal device for ultrasonic welding, comprising a welding machine base (1) and an ultrasonic welding machine (2), wherein the ultrasonic welding machine (2) comprises a body (21), a transducer (22), a welding head (23) and a welding seat (24), characterized in that: The front end of the ultrasonic welding machine (2) is provided with a battery fixture (3), the upper end of the battery fixture (3) is provided with a battery (4), the front end of the welding head (23) is provided with a dust removal cover (5), the dust removal cover (5) is provided with a dust removal component (6) and a negative pressure component (7), the bottom of the dust removal cover (5) is provided with a sealing component (8), and the welding seat (24) is provided with an outer cover (9), a closed welding environment is formed by the sealing component (8), the dust removal component (6) blows out the welding slag by blowing inert gas, and the negative pressure component (7) cleans the welding slag by negative pressure adsorption, and the inert gas is recycled by magnetic adsorption of the welding slag.

2. The automatic high-efficiency dust removal device for ultrasonic welding according to claim 1 is characterized in that: The dust removal assembly (6) comprises an air blowing head a (61) obliquely arranged in the dust removal cover (5) and an air blowing head b (62) arranged opposite to the air blowing head a (61), the air blowing head a (61) and the air blowing head b (62) are both connected to an air supply pipe (63), and the air supply pipe (63) is connected to an inert gas pump.

3. The automatic and efficient dust removal device for ultrasonic welding according to claim 1 is characterized in that: The negative pressure assembly (7) comprises a negative pressure suction head a (71) arranged on one side of the welding head (23) and a negative pressure suction head b (72) arranged opposite to the negative pressure suction head a (71), and the negative pressure suction head a (71) and the negative pressure suction head b (72) are both connected to the negative pressure channel (73).

4. The automatic high-efficiency dust removal device for ultrasonic welding according to claim 3 is characterized in that: A magnetic suction block (74) is provided between the negative pressure channel (73) and the negative pressure suction head a (71) or the negative pressure suction head b (72), and the negative pressure channel (73) is connected to an inert gas pump.

5. The automatic high-efficiency dust removal device for ultrasonic welding according to claim 1 is characterized in that: The sealing assembly (8) comprises an air cushion (81) arranged at the bottom of the dust cover (5), a cylinder body (82) arranged at the front end of the dust cover (5), and a piston (83) slidably arranged in the cylinder body (82); an air delivery channel (84) is arranged between the cylinder body (82) and the air cushion (81); and a spring (85) is arranged between the piston (83) and the cylinder body (82).

6. The automatic high-efficiency dust removal device for ultrasonic welding according to claim 5, characterized in that: The dust removal cover (5) is provided with a fixing block (51), and the fixing block (51) is provided with a bolt (52).

7. The automatic high-efficiency dust removal device for ultrasonic welding according to claim 1 is characterized in that: The battery fixture (3) is provided with a clamping piece (31), and the clamping piece (31) is provided with a welding groove (32).

8. The automatic high-efficiency dust removal device for ultrasonic welding according to claim 6, characterized in that: The body (21) is provided with an adjusting screw (211).

Images