Welding dust removal device

Abstract

The present disclosure relates to a welding dust removal device, comprising a negative pressure dust removal mechanism and a welding press plate for pressing the tabs, the negative pressure dust removal mechanism and the welding press plate cooperate with each other, the welding press plate comprises an upper press plate and a lower press plate fixedly connected with each other, a plurality of welding areas adapted to the welding head of the welding device are arranged on the upper press plate, the welding areas are slots penetrating through the upper press plate and the lower press plate, the upper press plate is provided with a through hole for connecting the negative pressure dust removal mechanism, the through hole is an opening penetrating through the upper press plate, and the through hole communicates with the welding areas via a flow guide space arranged between the lower press plate and the lower press plate. In the welding dust removal device, an air path is formed between the welding areas, the flow guide space and the through hole, so that the dust and welding residues generated during the welding process can be sucked out of the welding press plate through the air path via the flow guide space and the through hole, and the negative pressure airflow can be smoothly circulated to carry away the dust and residues.

Description

Technical Field

[0001] This utility model relates to the field of battery dust removal equipment technology, and in particular to a welding dust removal device, which is especially suitable for ultrasonic welding dust removal of square lithium batteries. Background Technology

[0002] In lithium-ion battery manufacturing, the welding of the cell tabs and adapter plates together using an ultrasonic welding machine is a crucial process, and the welding quality directly affects the battery performance. With the pursuit of higher energy density in lithium-ion batteries, excess space within the casing is constantly being compressed, leading to increasingly stringent requirements for the tab-adapter plate welding precision. This also results in a narrow welding area, making it difficult for welding dust removal mechanisms to approach the welding zone. Furthermore, the welding slag generated during the welding process cannot be effectively cleaned by the equipment itself, necessitating regular cleaning of the welding plates by designated personnel, which consumes considerable manpower to prevent impacting cell quality. Utility Model Content

[0003] Based on the above, the purpose of this utility model is to propose a welding dust removal device to solve the technical problem that existing welding dust removal devices require fixed personnel to clean the welding pressure plate at fixed times. The welding dust removal device provided by this utility model has a reasonable structural design for the welding pressure plate, which can achieve the purpose of automation, thereby saving manpower consumption for cleaning the welding pressure plate.

[0004] Therefore, the present invention provides a welding dust removal device, including a negative pressure dust removal mechanism and a welding pressure plate for pressing the battery cell tabs. The negative pressure dust removal mechanism and the welding pressure plate cooperate with each other. The welding pressure plate includes an upper pressure plate and a lower pressure plate fixedly connected to each other. The upper pressure plate and the lower pressure plate are respectively provided with a plurality of welding areas adapted to the welding head of the welding device. The welding area is a slot that penetrates the upper pressure plate and the lower pressure plate. The upper pressure plate is provided with a through hole to connect with the negative pressure dust removal mechanism. The through hole is an opening that penetrates the upper pressure plate. The through hole communicates with the welding area through a flow guiding space provided between the lower pressure plate and the lower pressure plate.

[0005] In the welding pressure plate of this utility model, the guide space connects the welding area and the through hole, thereby forming an air passage between the welding area, the guide space and the through hole. During welding, the negative pressure dust removal mechanism is activated, and the negative pressure generated by the negative pressure dust removal mechanism can be directed to the perimeter of the welding area through the guide space. Therefore, the dust and welding residue generated during the welding process can be sucked out of the welding pressure plate through the guide space and the through hole via this air passage, ensuring that the negative pressure airflow can smoothly carry away the dust and residue. Furthermore, due to the formation of the air passage, the distance between the negative pressure port of the negative pressure dust removal mechanism at the welding edge of the welding device is shortened, for example, to less than 1 mm, thereby greatly improving the welding dust removal effect.

[0006] Specifically, the through holes on the welding plate serve as dust removal holes. The negative pressure dust removal mechanism above connects to the through holes to suck up dust. Dust residue is guided by the guide space to the through holes and then sucked up by the negative pressure dust removal mechanism above.

[0007] In this invention, the flow guiding space is formed by a groove on the upper pressure plate, and the groove is located on the side of the upper pressure plate close to the lower pressure plate.

[0008] In this invention, the welding device is an ultrasonic welding machine. The welding dust removal device provided by this invention is a welding dust removal device used in ultrasonic welding machines.

[0009] When designing the through-hole in this invention, it is necessary to avoid interference with the ultrasonic welding machine to prevent affecting the normal operation of the equipment.

[0010] In some embodiments, the welding areas are not connected to each other, the flow guiding spaces are not connected to each other, and the through holes are not connected to each other; in order to avoid the dispersion of dust removal airflow and affect the dust removal effect.

[0011] In some embodiments, the upper pressure plate and the lower pressure plate are respectively provided with corresponding fixing mechanisms.

[0012] In some embodiments, the fixing mechanism includes a threaded hole on the upper pressure plate and a countersunk hole on the lower pressure plate, the upper pressure plate and the lower pressure plate being fixed by countersunk screws.

[0013] In some embodiments, the fixing mechanism includes pin holes disposed on the welding pressure plate to fix the installation positions of the upper pressure plate and the lower pressure plate to prevent the upper pressure plate and the lower pressure plate from shifting.

[0014] In some embodiments, the negative pressure dust removal mechanism includes a pressure block, a suction rod, a connecting block, and a linear bearing. The top of the pressure block is connected to the bottom of the suction rod, a spring is arranged around the periphery of the suction rod, the top of the suction rod is connected to the bottom of the connecting block, and a linear bearing is provided on the top of the connecting block. The suction rod, the spring, and the linear bearing cooperate to enable the suction rod to extend and retract. The linear bearing is used to prevent wear during the up-and-down movement of the suction rod, and the pressure block is used to ensure that the negative pressure dust removal mechanism is placed flat on the welded pressure plate.

[0015] In some embodiments, the connecting block is used to fix the piezoelectric core mechanism so that the negative pressure dust removal mechanism rises or falls with the piezoelectric core mechanism. In this invention, the piezoelectric core mechanism may be an ultrasonic welding machine, connected to the piezoelectric core mechanism via a U-shaped groove of the negative pressure dust removal mechanism, allowing the negative pressure dust removal mechanism to rise, fall, or move laterally.

[0016] In some embodiments, the end of the suction rod near the pressure block is cup-shaped or funnel-shaped to provide sufficient negative pressure flow.

[0017] In some embodiments, the end of the suction rod near the connecting block is a straight rod to avoid the accumulation of welding slag in the suction rod, which would affect the dust removal air velocity.

[0018] In some embodiments, the pressure block is made of PEEK or POM material, which will not produce metal debris when it collides with the welded pressure plate made of metal.

[0019] In some embodiments, foam is adhered to the bottom of the pressure block.

[0020] In some embodiments, the number of welding areas is four. Therefore, when used for ultrasonic welding, since ultrasonic welding requires welding four times in different welding machines, different electrodes, and different positions, this utility model can maintain the same structure, only change the installation position, and adapt to different welding machines.

[0021] The beneficial effects of this disclosure are as follows: The welding dust removal device provided by this utility model has a pre-designed air passage inside the welding pressure plate, which allows the negative pressure generated by the negative pressure dust removal mechanism to circulate inside the welding pressure plate. The negative pressure dust removal mechanism descends to connect with the through hole (i.e., the dust suction guide port) on the welding pressure plate to form a negative pressure closed loop. Negative pressure dust removal can be applied directly around the welding position. The distance from the welding edge to the negative pressure port is short, for example, less than 1 mm, thereby greatly improving the welding dust removal effect. Attached Figure Description

[0022] The present disclosure will be described in more detail below based on embodiments and with reference to the accompanying drawings: Figure 1 This is a structural schematic diagram of the welding dust removal device provided according to an embodiment of the present utility model.

[0023] Figure 2 This is a schematic diagram of the negative pressure dust removal mechanism of the welding dust removal device provided according to an embodiment of the present utility model.

[0024] Figure 3 This is a schematic diagram of the combined structure of the welding pressure plate according to an embodiment of the present utility model.

[0025] Figure 4 This is an exploded structural diagram of the welding pressure plate provided according to an embodiment of the present utility model.

[0026] Figure 5 This is a schematic diagram of the upper pressure plate of the welding pressure plate provided according to an embodiment of the present utility model.

[0027] Figure 6This is a schematic diagram of the structure of the lower pressure plate of the welding pressure plate provided according to an embodiment of the present utility model.

[0028] In the accompanying drawings, the same parts are referred to by the same reference numerals, and the drawings are not drawn to scale.

[0029] Among them, 1. Negative pressure dust removal mechanism, 101. Pressure block, 102. Suction rod, 103. Connecting block, 104. Linear bearing, 2. Welding pressure plate, 3. Upper pressure plate, 301. First welding area, 302. Second welding area, 303. Third welding area, 304. Fourth welding area, 305. Groove, 306. Through hole, 307. Threaded hole, 308. Fixing clamp hole, 4. Lower pressure plate, 401. Countersunk hole, 402. Welding area, 403. Fixing clamp hole. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this disclosure, and to fully understand and implement the process of how this disclosure applies technical means to solve technical problems and achieve corresponding technical effects, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, not all embodiments. The embodiments of this disclosure and the various features within them can be combined with each other without conflict, and the resulting technical solutions are all within the protection scope of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort should fall within the protection scope of this disclosure.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0033] like Figure 1-6 The welding dust removal device shown includes a negative pressure dust removal mechanism 1 and a welding pressure plate 2 for pressing the electrode tabs. The negative pressure dust removal mechanism 1 and the welding pressure plate 2 cooperate with each other. The welding pressure plate 2 includes an upper pressure plate 3 and a lower pressure plate 4 that are fixedly connected to each other. The upper pressure plate 3 and the lower pressure plate 4 are respectively provided with four welding areas 402 (or welding area holes, the position below which is where the object to be welded is placed) that are adapted to the welding head of the welding device. The welding areas 402 are slots that penetrate the upper pressure plate 3 and the lower pressure plate 4. The four welding areas 402 are the first welding area 301, the second welding area 302, the third welding area 303, and the fourth welding area 304. The upper pressure plate 3 is provided with a through hole 306 to connect with the negative pressure dust removal mechanism 1. The through hole 306 is an opening that penetrates the upper pressure plate 3 and communicates with the welding areas through a guide space provided between the lower pressure plate 3 and the lower pressure plate 4.

[0034] The flow guiding space is formed by a groove 305 provided on the upper pressure plate 3, which is located on the side of the upper pressure plate 3 near the lower pressure plate 4. Each welding area is connected to the corresponding groove 305, and the corresponding groove 305 is connected to the corresponding through hole 306. Therefore, an air passage is formed between the welding area, the groove 305 and the through hole 306.

[0035] Specifically, while welding is being performed by the welding device (e.g., ultrasonic welding machine), the negative pressure dust removal mechanism 1 is turned on. The negative pressure generated by the negative pressure dust removal mechanism 1 can be directed to the surrounding area of ​​the welding area 402 through the guide space. Therefore, the dust and welding residue generated during the welding process can be drawn out of the welding pressure plate 2 through the guide space and through hole 306 via the air passage, which can ensure that the negative pressure airflow can flow smoothly and carry away the dust and residue.

[0036] In some embodiments, the welding areas 402 are not connected to each other; the grooves 305 are not connected to each other; and the through holes 306 are not connected to each other, so as to avoid the dispersion of dust removal airflow and affect the dust removal effect.

[0037] In some embodiments, the upper pressure plate 3 and the lower pressure plate 4 are respectively provided with corresponding fixing mechanisms. The fixing mechanisms include a threaded hole 307 provided on the upper pressure plate 3 and a countersunk hole 401 provided on the lower pressure plate 4. The upper pressure plate 3 and the lower pressure plate 4 are fixed by countersunk screws.

[0038] In some embodiments, the welding pressure plate 2 is provided with pin holes to fix the installation positions of the upper pressure plate 3 and the lower pressure plate 4, so as to prevent the upper pressure plate 3 and the lower pressure plate 4 from shifting.

[0039] In some embodiments, the negative pressure dust removal mechanism 1 includes a pressure block 101, a suction rod 102, a connecting block 103, and a linear bearing 104. The top of the pressure block 101 is connected to the bottom of the suction rod 102. A spring (not shown) is arranged around the periphery of the suction rod 102. The top of the suction rod 102 is connected to the bottom of the connecting block 103. A linear bearing 104 is arranged on the top of the connecting block 103. The suction rod 102, the spring, and the linear bearing 104 cooperate to enable the suction rod 102 to extend and retract. The linear bearing 104 is used to prevent wear when the suction rod 102 moves up and down. The pressure block 101 is used to ensure that the negative pressure dust removal mechanism 1 is placed flat on the welding pressure plate 2.

[0040] In some embodiments, the connecting block 103 is used to fix to the piezoelectric core mechanism (not shown) so that the negative pressure dust removal mechanism 1 rises or falls with the piezoelectric core mechanism.

[0041] In some embodiments, the end of the suction rod 102 near the pressure block 101 is cup-shaped or funnel-shaped to provide sufficient negative pressure flow.

[0042] In some embodiments, the end of the suction rod 102 near the connecting block 103 is a straight rod to avoid welding slag accumulating in the suction rod and thus affecting the dust removal wind speed.

[0043] In some embodiments, the pressure block 101 is made of PEEK or POM material, and the PEEK or POM material will not collide with the metal welded pressure plate 2 to generate metal fragments.

[0044] In some embodiments, foam is adhered to the bottom of the pressure block 101.

[0045] Example 1 The welding dust removal device provided in this embodiment is a welding dust removal device for an ultrasonic welding machine. The welding dust removal device includes a negative pressure dust removal mechanism 1 and a welding pressure plate 2 for pressing the electrode tabs. The welding pressure plate 2 includes an upper pressure plate 3 and a lower pressure plate 4. The upper pressure plate 3 is provided with four welding areas 402 that are adapted to the welding head of the welding device. The welding areas 402 are slots that penetrate the upper pressure plate 3 and the lower pressure plate 4. The four welding areas 402 are respectively a first welding area 301, a second welding area 302, a third welding area 303, and a fourth welding area 304. The upper pressure plate 3 is provided with a through hole 306 to connect with the negative pressure dust removal mechanism 1. The through hole 306 is an opening that penetrates the upper pressure plate 3. The through hole 306 communicates with the welding areas 402 through a flow guiding space provided between the lower pressure plate 3 and the lower pressure plate 4.

[0046] The flow guide space is formed by a groove 305 on the upper pressure plate 3, which is located on the side of the upper pressure plate 3 near the lower pressure plate 4. Each welding area 402 is connected to the corresponding groove 305, and the corresponding groove 305 is connected to the corresponding through hole 306. Therefore, an air passage is formed between the welding area, the groove 305, and the through hole 306. The dust residue generated by the ultrasonic welding machine is discharged through this air passage via the groove 305 and the through hole 306. The negative pressure dust removal mechanism 2 is connected to the through hole 306 to perform dust suction. The dust residue is guided from the groove 305 to the through hole 306 and then sucked up by the negative pressure dust suction mechanism 2 above.

[0047] The grooves 305 are not connected to each other, the through holes 306 are not connected to each other, and the welding areas 402 are not connected to each other; in order to avoid the dispersion of dust removal airflow and affect the dust removal effect.

[0048] The upper pressure plate 3 and the lower pressure plate 4 are respectively provided with corresponding fixing mechanisms. The fixing mechanisms include threaded holes 307 provided on the upper pressure plate 3 and countersunk holes 401 provided on the lower pressure plate 4. The upper pressure plate 3 and the lower pressure plate 4 are fixed by countersunk screws.

[0049] The upper pressure plate 3 and the lower pressure plate 4 are respectively provided with corresponding fixing clamping holes 308 and 403, and other mechanism claws can clamp in these reserved holes.

[0050] The negative pressure dust removal mechanism 1 includes a pressure block 101, a suction rod 102, a connecting block 103, and a linear bearing 104 connected to each other. The top of the pressure block 101 is connected to the bottom of the suction rod 102. A spring (not shown) is arranged around the periphery of the suction rod 102. The top of the suction rod 102 is connected to the bottom of the connecting block 103. A linear bearing 104 is arranged on the top of the connecting block 103. The suction rod 102, the spring, and the linear bearing 104 cooperate to enable the suction rod 102 to extend and retract. The linear bearing 104 is used to prevent wear when the suction rod 102 moves up and down. The pressure block 101 is used to ensure that the negative pressure dust removal mechanism 1 is placed flat on the welded pressure plate 2.

[0051] The connecting block 103 is used to fix it on the piezoelectric core mechanism (not shown) so that the negative pressure dust removal mechanism 1 rises or falls with the piezoelectric core mechanism; the suction rod 102 is funnel-shaped at the end near the pressure block 101 to provide sufficient negative pressure flow; the suction rod 102 is straight at the end near the connecting block 103 to avoid welding slag accumulating in the suction rod and thus affecting the dust removal wind speed.

[0052] The pressure block 101 is made of PEEK material, which will not produce metal debris when it collides with the metal welding pressure plate 2; the welding pressure plate 2 is also provided with pin holes (not shown) to fix the installation position of the upper pressure plate 3 and the lower pressure plate 4 and prevent the upper pressure plate 3 and the lower pressure plate 4 from shifting.

[0053] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A welding dust removal device, characterized in that, The device includes a negative pressure dust removal mechanism (1) and a welding plate (2) for pressing the battery cell tabs. The negative pressure dust removal mechanism (1) and the welding plate (2) cooperate with each other. The welding plate (2) includes an upper plate (3) and a lower plate (4) that are fixedly connected to each other. The upper plate (3) and the lower plate (4) are provided with a plurality of welding areas (402) that are adapted to the welding head of the welding device. The welding area (402) is a slot that penetrates the upper plate (3) and the lower plate (4). The upper plate (3) is provided with a through hole (306) to connect with the negative pressure dust removal mechanism (1). The through hole (306) is an opening that penetrates the upper plate (3). The through hole (306) communicates with the welding area (402) through a flow guiding space provided between the upper plate (3) and the lower plate (4).

2. The welding dust removal device according to claim 1, characterized in that, The welding areas (402) are not connected to each other, the flow guiding spaces are not connected to each other, and the through holes (306) are not connected to each other.

3. The welding dust removal device according to claim 1, characterized in that, The upper pressure plate (3) and the lower pressure plate (4) are respectively provided with matching fixing mechanisms.

4. The welding dust removal device according to claim 3, characterized in that, The fixing mechanism includes a threaded hole (307) on the upper pressure plate (3) and a countersunk hole (401) on the lower pressure plate (4), and the upper pressure plate (3) and the lower pressure plate (4) are fixed by countersunk screws.

5. The welding dust removal device according to claim 3, characterized in that, The fixing mechanism includes pin holes provided on the welding pressure plate (2) to fix the installation positions of the upper pressure plate (3) and the lower pressure plate (4).

6. The welding dust removal device according to any one of claims 1-5, characterized in that, The negative pressure dust removal mechanism (1) includes a pressure block (101), a suction rod (102), a connecting block (103), and a linear bearing (104). The top of the pressure block (101) is connected to the bottom of the suction rod (102). A spring is arranged around the periphery of the suction rod (102). The top of the suction rod (102) is connected to the bottom of the connecting block (103). A linear bearing (104) is arranged on the top of the connecting block (103). The suction rod (102), the spring, and the linear bearing (104) cooperate to enable the suction rod (102) to extend and retract. The linear bearing (104) is used to prevent wear when the suction rod (102) moves up and down. The pressure block (101) is used to ensure that the negative pressure dust removal mechanism (1) is placed flat on the welding plate (2).

7. The welding dust removal device according to claim 6, characterized in that, The connecting block (103) is used to fix it on the piezoelectric core mechanism so that the negative pressure dust removal mechanism (1) rises or falls with the piezoelectric core mechanism.

8. The welding dust removal device according to claim 6, characterized in that, The suction rod (102) is cup-shaped or funnel-shaped at one end near the pressure block (101) to provide sufficient negative pressure flow.

9. The welding dust removal device according to claim 6, characterized in that, The suction rod (102) is straight at one end near the connecting block (103) to avoid welding slag accumulating in the suction rod (102) and thus affecting the dust removal wind speed.

10. The welding dust removal device according to claim 6, characterized in that, The pressure block (101) is made of PEEK or POM material.

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