Welding dust removal head

Abstract

The invention provides a welding dust removal head, and relates to the technical field of battery cell manufacturing equipment. The welding dust removal head is provided with a welding channel, an adsorption hole, a positive pressure hole and a negative pressure hole. The adapting piece is adsorbed through negative pressure of the adsorption holes, so that the adapting piece is fixed to the welding dust removal head, and welding is facilitated; the welding channel can expose the part, needing to be welded, of the switching piece, so that laser can conveniently penetrate through the welding channel and act on the switching piece; in the welding process, protective gas is input into the welding channel through the positive pressure holes, and meanwhile, impurities such as welding slag or dust generated in the welding process are adsorbed through adsorption of the negative pressure holes. Therefore, through the reasonable design of the welding channel, the adsorption holes, the positive pressure holes and the negative pressure holes, the welding dust removal head can form an ideal flow channel for controlling dust flow, the efficient dust removal effect is achieved, the welding dust removal problem is efficiently solved, the overall structure is simple and compact, and the production and machining cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of battery core manufacturing equipment, and in particular to a welding dust removal head. Background Art

[0002] The process of cell manufacturing involves the welding of adapters. During the welding process, dust will be generated, which will affect the welding quality. Currently, the market mainly uses negative pressure exhaust or a combination of positive and negative pressure to remove dust. However, due to the problem of laser light path avoidance, most hood dust removal methods are mainly achieved by blowing protective gas at the welding end face and negative pressure exhaust far above.

[0003] However, there are some problems with this type of dust removal: the wind speed distribution of negative pressure dust suction is uneven, and local excessive wind speed will cause dust to be trapped; the superposition effect of the convection field formed by the interaction of positive and negative pressures will cause the welding slag dust to overflow under the action of blowing, and then escape into the fixture or the inside of the product, thereby reducing the product's yield rate. In addition, dust may also accumulate inside the welding head, shortening the service life of the welding head and increasing the replacement cost. Summary of the invention

[0004] The present invention provides a welding dust removal head, which can form an ideal flow channel for controlling the flow of dust. It not only has an efficient dust removal effect and effectively solves the problem of removing welding dust, but also has a simple and compact overall structure and reduces production and processing costs.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a welding dust removal head, wherein the welding dust removal head is provided with a welding channel, an adsorption hole, a positive pressure hole and a negative pressure hole;

[0007] The adsorption hole is used to adsorb the adapter plate, the welding channel is used to expose the adapter plate, the positive pressure hole and the negative pressure hole are both connected to the welding channel, the positive pressure hole is used to input protective gas into the welding channel, and the negative pressure hole is used to adsorb impurities.

[0008] In an optional embodiment, the positive pressure hole and the negative pressure hole are arranged opposite to each other, and the positive pressure hole extends obliquely toward the bottom wall of the welding dust removal head.

[0009] In an optional embodiment, the angle between the extension path of the positive pressure hole and the horizontal plane is 5° to 10°.

[0010] In an optional embodiment, the welding dust removal head is also provided with a negative pressure channel, which includes a first channel, a transition channel and a second channel connected in sequence, the first channel is connected to the negative pressure hole, and the inner diameter of the transition channel gradually increases along the first channel toward the second channel.

[0011] In an optional embodiment, the top and bottom of the transition channel are arranged at an angle, and the angle is 30° to 45°.

[0012] In an optional embodiment, the welding dust removal head is further provided with a positive pressure channel, and the positive pressure channel includes a third channel, a buffer channel and a fourth channel connected in sequence, and the third channel is connected to the positive pressure hole.

[0013] In an optional embodiment, there are multiple welding channels, and the multiple welding channels are evenly distributed around the center of the welding dust removal head. The welding dust removal head is also provided with a negative pressure channel and a positive pressure channel. The negative pressure channel is connected to the negative pressure holes of two adjacent welding channels, and the positive pressure channel is connected to the positive pressure holes of two adjacent welding channels.

[0014] In an optional embodiment, there are multiple adsorption holes, and each adsorption hole is disposed between two adjacent welding channels.

[0015] In an optional embodiment, the welding dust removal head includes a top wall, a side wall and a bottom wall, the side wall is connected to the top wall and the bottom wall, the adsorption hole is arranged on the bottom wall, the welding channel passes through the top wall and the bottom wall, and the welding dust removal head is also provided with an adsorption channel, one end of the adsorption channel passes through the side wall, and the other end is connected to the adsorption hole.

[0016] In an optional embodiment, the width of the positive pressure hole is 0.5 mm to 0.8 mm, and / or the width of the negative pressure hole is 3 mm to 5 mm.

[0017] The beneficial effects of the welding dust removal head provided by the embodiment of the present invention include: the adapter is adsorbed by negative pressure through the adsorption hole to fix the adapter on the welding dust removal head, which is convenient for welding; and the welding channel can reveal the part of the adapter that needs to be welded, so as to facilitate the laser to pass through the welding channel and act on the adapter; during the welding process, the protective gas is input into the welding channel through the positive pressure hole, and at the same time, it is adsorbed through the negative pressure hole to adsorb impurities such as welding slag or dust generated during the welding process. Therefore, the welding dust removal head can form an ideal flow channel for controlling the flow of dust through the reasonable design of the welding channel, adsorption holes, positive pressure holes and negative pressure holes. It not only has an efficient dust removal effect and effectively solves the problem of removing welding dust, but also has a simple and compact overall structure and reduces production and processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the structure of a welding dust removal head from a first perspective provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of a welding dust removal head from a second viewing angle provided by an embodiment of the present invention;

[0021] Figure 3 A perspective view of a welding dust removal head provided by an embodiment of the present invention;

[0022] Figure 4 The embodiment of the present invention provides Figure 3 Middle AA section view;

[0023] Figure 5 The embodiment of the present invention provides Figure 3 Middle BB section view;

[0024] Figure 6 A schematic diagram of the structure of a welding dust removal head from a third perspective provided by an embodiment of the present invention;

[0025] Figure 7 The embodiment of the present invention provides Figure 6 Middle CC section view;

[0026] Figure 8 The embodiment of the present invention provides Figure 6 Middle DD section view.

[0027] Icon: 10- welding dust removal head; 100- welding channel; 200- adsorption hole; 300- positive pressure hole; 400- negative pressure hole; 500- negative pressure channel; 510- first channel; 520- transition channel; 530- second channel; 600- positive pressure channel; 610- third channel; 620- buffer channel; 630- fourth channel; 700- adsorption channel; 810- top wall; 820- side wall; 830- bottom wall. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0034] The process of cell manufacturing involves the welding of adapters. During the welding process, dust will be generated, which will affect the welding quality. Currently, the market mainly uses negative pressure exhaust or a combination of positive and negative pressure to remove dust. However, due to the problem of laser light path avoidance, most hood dust removal methods are mainly achieved by blowing protective gas at the welding end face and negative pressure exhaust far above.

[0035] However, this type of dust removal method has some major problems: the wind speed distribution of negative pressure dust suction is uneven, and local excessive wind speed will cause dust to be trapped; the superposition effect of the convection field formed by the interaction of positive and negative pressures will cause the welding slag dust to overflow under the action of blowing, and then escape into the fixture or the inside of the product, thereby reducing the product's yield rate. In addition, dust may also accumulate inside the welding head, shortening the service life of the welding head and increasing the replacement cost.

[0036] Based on the above questions, please refer to Figures 1 to 8 The embodiment of the present invention provides a welding dust removal head 10, which is suitable for the welding process of the battery cell adapter. By performing welding operations with the welding dust removal head 10, dust can be effectively removed to avoid dust and foreign matter pollution, thereby improving welding quality.

[0037] In detail, the welding dust removal head 10 is provided with a welding channel 100 , a suction hole 200 , a positive pressure hole 300 , and a negative pressure hole 400 .

[0038] The adsorption hole 200 is used to adsorb the adapter, the welding channel 100 is used to expose the adapter, the positive pressure hole 300 and the negative pressure hole 400 are both connected to the welding channel 100, the positive pressure hole 300 is used to input shielding gas into the welding channel 100, and the negative pressure hole 400 is used to adsorb impurities.

[0039] In this embodiment, the adapter is negatively adsorbed through the adsorption hole 200 to fix the adapter on the welding dust removal head 10, which is convenient for welding; and the welding channel 100 can expose the part of the adapter that needs to be welded, so that the laser can pass through the welding channel 100 and act on the adapter; during the welding process, the protective gas is input into the welding channel 100 through the positive pressure hole 300, and at the same time, it is adsorbed through the negative pressure hole 400 to adsorb impurities such as welding slag or dust generated during the welding process.

[0040] Therefore, the welding dust removal head 10 provided by the present invention can form an ideal flow channel for controlling the flow of dust through the reasonable design of the welding channel 100, the adsorption hole 200, the positive pressure hole 300 and the negative pressure hole 400. It not only has an efficient dust removal effect, but also effectively solves the problem of removing welding dust. Its overall structure is simple and compact, and it also reduces production and processing costs.

[0041] Furthermore, the positive pressure hole 300 and the negative pressure hole 400 are arranged opposite to each other, and the positive pressure hole 300 extends obliquely toward the bottom wall 830 of the welding dust removal head 10 .

[0042] In the present embodiment, in other words, the positive pressure hole 300 and the negative pressure hole 400 are distributed on two opposite inner walls of the welding channel 100, and the extension direction of the positive pressure hole 300 is set to be inclined downward, so that the shielding gas is ejected from the positive pressure hole 300 in the inclined downward direction, so that the shielding gas can fully act on the adapter plate and ensure the uniformity of the flow vector and velocity of the airflow.

[0043] Specifically, the angle between the extension path of the positive pressure hole 300 and the horizontal plane (such as Figure 4The angle Ⅰ shown in the figure is 5°~10°, so that the shielding gas ejection angle from the positive pressure hole 300 is reasonable, avoiding the angle being too small so that the shielding gas directly flows out from the negative pressure hole 400, and avoiding the ejection angle being too large so that the airflow cannot be smoothly discharged from the negative pressure hole 400.

[0044] Furthermore, the welding dust removal head 10 is also provided with a negative pressure channel 500, which includes a first channel 510, a transition channel 520 and a second channel 530 connected in sequence. The first channel 510 is connected to the negative pressure hole 400, and the inner diameter of the transition channel 520 gradually increases in the direction from the first channel 510 to the second channel 530.

[0045] In this embodiment, the second channel 530 is used to connect with the vacuum device to provide negative pressure therefor. The inner diameter of the transition channel 520 is gradually increased in the direction from the first channel 510 to the second channel 530, that is, the area of ​​the cross-section of the fluid passing through the transition channel is increased, so that the velocity of the fluid is reduced accordingly.

[0046] Furthermore, the top and bottom of the transition channel 520 are at an angle (eg Figure 5 As shown in FIG. 2 , the transition channel 520 is set at an angle of 30° to 45°, so that the transition channel 520 is reasonably designed and the uniformity of the flow vector and velocity of the airflow is ensured.

[0047] Furthermore, the width of the positive pressure hole 300 is 0.5 mm to 0.8 mm, and the width of the negative pressure hole 400 is 3 mm to 5 mm.

[0048] In this embodiment, it should be noted that the opening structures of the positive pressure hole 300 and the negative pressure hole 400 are both long rectangular structures extending in the horizontal direction. Therefore, the width of the positive pressure hole 300 is as follows: Figure 4 As shown in X, the width of the negative pressure hole 400 is as follows Figure 4 Y shown.

[0049] Furthermore, the welding dust removal head 10 is also provided with a positive pressure channel 600 , which includes a third channel 610 , a buffer channel 620 and a fourth channel 630 which are connected in sequence, and the third channel 610 is connected to the positive pressure hole 300 .

[0050] In this embodiment, the fourth channel 630 is used to be connected to a protective gas pump so as to input protective gas into the positive pressure channel 600 through the protective gas pump.

[0051] A buffer channel 620 is provided between the third channel 610 and the fourth channel 630 to buffer the inputted protective gas.

[0052] In detail, as shown in the figure, the third channel 610 is formed by two vertical sections, one end of the first section is connected to the positive pressure hole 300, and the other end extends in the vertical direction and is connected to the second section, and the second section extends in the horizontal direction until it is connected to the buffer channel 620.

[0053] It is understood that the protective gas can be an inert gas such as nitrogen, and is not specifically limited here.

[0054] Furthermore, there are multiple welding channels 100, which are evenly distributed around the center of the welding dust removal head 10, the negative pressure channel 500 is connected to the negative pressure holes 400 of two adjacent welding channels 100, and the positive pressure channel 600 is connected to the positive pressure holes 300 of two adjacent welding channels 100.

[0055] In this embodiment, by providing a plurality of welding channels 100, a plurality of portions to be welded of the adapter plate can be exposed at the same time, so that the plurality of portions of the adapter plate can be welded at the same time, or the plurality of portions to be welded can be welded successively without moving the adapter plate, thereby effectively improving the welding efficiency.

[0056] Each welding channel 100 is provided with a positive pressure hole 300 and a negative pressure hole 400, and the adjacent sides of two adjacent welding channels 100 are both positive pressure holes 300 or both negative pressure holes 400. Therefore, it is only necessary to set a corresponding positive pressure channel 600 between two adjacent welding channels 100, and make the positive pressure channel 600 connected with the positive pressure holes 300 set in the two welding channels 100; or set a corresponding negative pressure channel 500 between two adjacent welding channels 100, and make the negative pressure channel 500 connected with the negative pressure holes 400 set in the two welding channels 100.

[0057] In this way, the positive pressure blowing and negative pressure adsorption functions of the welding dust removal head 10 can be met, and the structural design of the welding dust removal head 10 is reasonable, and its space volume is effectively utilized.

[0058] Furthermore, there are multiple adsorption holes 200 , and the adsorption holes 200 are arranged between two adjacent welding channels 100 .

[0059] In this embodiment, in order to ensure the stability of the adsorption of the adapter plate, a plurality of adsorption holes 200 are provided to adsorb the adapter plate at the same time, so as to ensure that the adapter plate is stably adsorbed on the welding dust removal head 10 during the welding process, so as to improve the welding quality.

[0060] In detail, the welding dust removal head 10 is also provided with an adsorption channel 700, and the welding dust removal head 10 includes a top wall 810, a side wall 820 and a bottom wall 830, the side wall 820 is connected to the top wall 810 and the bottom wall 830, the adsorption hole 200 is arranged on the bottom wall 830, the welding channel 100 passes through the top wall 810 and the bottom wall 830, one end of the adsorption channel 700 passes through the side wall 820, and the other end is connected to the adsorption hole 200.

[0061] Optionally, as shown in the figure, the number of welding channels 100 and the number of adsorption holes 200 are both 4, the 4 welding channels 100 are distributed around the center of the welding dust removal head 10, and the 4 welding channels 100 and the 4 adsorption holes 200 are staggered, that is, any adsorption hole 200 is located between two adjacent welding channels 100; and, the number of positive pressure channels 600 and negative pressure channels 500 are both 2, one of the positive pressure channels 600 is connected to the positive pressure holes 300 of two adjacent welding channels 100, and the other positive pressure channel 600 is connected to the positive pressure holes 300 of the other two adjacent welding channels 100, and similarly, one of the negative pressure channels 500 is connected to the negative pressure holes 400 of two adjacent welding channels 100, and the other negative pressure channel 500 is connected to the negative pressure holes 400 of the other two adjacent welding channels 100.

[0062] Moreover, the inner diameter of the welding channel 100 gradually decreases from the top wall 810 toward the bottom wall 830 .

[0063] In summary, the embodiment of the present invention provides a welding dust removal head 10, which uses the adsorption hole 200 to negatively adsorb the adapter plate, so as to fix the adapter plate on the welding dust removal head 10, which is convenient for welding; and the welding channel 100 can reveal the part of the adapter plate that needs to be welded, so as to facilitate the laser to pass through the welding channel 100 and act on the adapter plate; during the welding process, the protective gas is input into the welding channel 100 through the positive pressure hole 300, and at the same time, it is adsorbed through the negative pressure hole 400 to adsorb impurities such as welding slag or dust generated during the welding process. Therefore, the welding dust removal head 10 can form an ideal flow channel for controlling the flow of dust through the reasonable design of the welding channel 100, the adsorption hole 200, the positive pressure hole 300 and the negative pressure hole 400, which not only has an efficient dust removal effect, but also effectively solves the problem of removing welding dust. Its overall structure is simple and compact, and it also reduces production and processing costs.

[0064] The above is only a 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 within the technical scope disclosed by 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. A welding dust removal head, characterized in that: The welding dust removal head is provided with a welding channel, an adsorption hole, a positive pressure hole and a negative pressure hole; The adsorption hole is used to adsorb the adapter plate, the welding channel is used to expose the adapter plate, the positive pressure hole and the negative pressure hole are both connected to the welding channel, the positive pressure hole is used to input protective gas into the welding channel, and the negative pressure hole is used to adsorb impurities.

2. The welding dust removal head according to claim 1, characterized in that: The positive pressure hole and the negative pressure hole are arranged opposite to each other, and the positive pressure hole extends obliquely toward the bottom wall of the welding dust removal head.

3. The welding dust removal head according to claim 1, characterized in that: The included angle between the extension path of the positive pressure hole and the horizontal plane is 5° to 10°.

4. The welding dust removal head according to claim 1, characterized in that: The welding dust removal head is also provided with a negative pressure channel, which includes a first channel, a transition channel and a second channel connected in sequence, the first channel is connected to the negative pressure hole, and the inner diameter of the transition channel gradually increases along the first channel toward the second channel.

5. The welding dust removal head according to claim 4, characterized in that: The top and bottom of the transition channel are arranged at an angle, and the angle is 30° to 45°.

6. The welding dust removal head according to claim 1, characterized in that: The welding dust removal head is also provided with a positive pressure channel, which includes a third channel, a buffer channel and a fourth channel connected in sequence, and the third channel is connected to the positive pressure hole.

7. The welding dust removal head according to claim 1, characterized in that: There are multiple welding channels, and the multiple welding channels are evenly distributed around the center of the welding dust removal head. The welding dust removal head is also provided with a negative pressure channel and a positive pressure channel. The negative pressure channel is connected to the negative pressure holes of two adjacent welding channels, and the positive pressure channel is connected to the positive pressure holes of two adjacent welding channels.

8. The welding dust removal head according to claim 7, characterized in that: The number of the adsorption holes is multiple, and the adsorption holes are arranged between two adjacent welding channels.

9. The welding dust removal head according to claim 1, characterized in that: The welding dust removal head includes a top wall, a side wall and a bottom wall, the side wall is connected to the top wall and the bottom wall, the adsorption hole is arranged on the bottom wall, the welding channel passes through the top wall and the bottom wall, and the welding dust removal head is also provided with an adsorption channel, one end of the adsorption channel passes through the side wall, and the other end is connected to the adsorption hole.

10. The welding dust removal head according to claim 1, characterized in that: The width of the positive pressure hole is 0.5 mm to 0.8 mm, and / or the width of the negative pressure hole is 3 mm to 5 mm.

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