A slitting knife cleaning device and slitting equipment for lithium battery production

Abstract

The utility model discloses a slitting knife cleaning device and a slitting device for lithium battery production. The slitting knife cleaning device comprises: a wiping unit for wiping impurities attached to the surface of the slitting knife; and a dust collecting unit for adsorbing and collecting impurities. The utility model can automatically clean impurities in the slitting process, has high cleaning efficiency, long maintenance cycle, and does not affect production.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery production, and specifically relates to a slitting knife cleaning device and slitting equipment for lithium battery production. Background Art

[0002] During the production of lithium-ion power batteries, the slitting knives are easily attached with dust or metal particles during the roller slitting, laser slitting and other steps, which poses a great threat to the performance and safety of the subsequent processed batteries. Existing contact wiping mostly uses brushes, and there is no ready-made installation mechanism. It also requires the regular addition of alcohol, regular shutdown for cleaning, and replacement of consumables, which affects production. At the same time, to prevent dust from splashing, the existing methods mostly use shielding and negative pressure vacuuming, but the effect is minimal. Therefore, how to provide a non-contact dust removal device with high efficiency, long replacement cycle and simple structure is an urgent problem to be solved. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a slitting knife cleaning device and slitting equipment for lithium battery production, which can automatically clean impurities in the slitting process, have high cleaning efficiency, long maintenance cycle, and do not affect production.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] In a first aspect, a slitting knife cleaning device is provided, comprising: a wiping unit for wiping off impurities attached to the surface of the slitting knife; and a dust collecting unit for adsorbing and collecting the impurities.

[0006] Furthermore, the wiping unit comprises: a wiping piece for directly wiping off impurities attached to the surface of the slitting knife; a clamping assembly for fixing the wiping piece; and a detergent delivery assembly for delivering detergent to the wiping piece.

[0007] Furthermore, the wiping piece is wool felt.

[0008] Furthermore, the cleaning agent is alcohol.

[0009] Furthermore, the clamping assembly includes a support member, a clamping member and a plurality of magnets, the clamping member is provided with a cavity for accommodating the wiping member, and the plurality of magnets are connected to the cavity by magnetic coupling to fix the wiping member; the support member is used to install the clamping member.

[0010] Furthermore, the support member is provided with a plurality of top screws for limiting the position of the clamping assembly.

[0011] Furthermore, the detergent delivery assembly includes: a peristaltic pump, the inlet of the peristaltic pump is connected to the detergent tank, the outlet of the peristaltic pump is connected to the guide groove arranged on the clamping member, and the peristaltic pump is used to deliver the detergent in the detergent tank to the guide groove, and deliver the detergent to the wiping member through the guide groove.

[0012] Furthermore, the dust suction unit includes: a dust suction hood, the dust suction hood has an arc surface matching the outer surface of the slitting knife roller, and the arc surface is spaced a set distance from the outer surface of the slitting knife roller; the dust suction hood also has a slitting knife groove surrounding the cutting edge of the slitting knife; the dust suction hood also has a positive pressure outlet for blowing the cutting edge of the slitting knife and the slitting knife roller; the dust suction hood also has a plurality of negative pressure inlets for removing impurities blown off the cutting edge of the slitting knife and the slitting knife roller by negative pressure adsorption; the dust suction hood also has a positive pressure interface, one end of the positive pressure interface is connected to the positive pressure outlet, and the other end is connected to the positive pressure source; the dust suction hood also has a negative pressure interface, one end of the negative pressure interface is connected to the negative pressure inlet, and the other end is connected to the negative pressure source.

[0013] Furthermore, the positive pressure source is an air compressor, and the negative pressure source is a vacuum pump.

[0014] In a second aspect, a slitting device for lithium battery production is provided, wherein the slitting device for lithium battery production is equipped with the slitting knife cleaning device described in the first aspect.

[0015] Compared with the prior art, the utility model has the beneficial effect that the utility model can automatically clean the impurities in the slitting process by cooperating with a wiping unit for wiping impurities attached to the surface of the slitting knife and a dust suction unit for adsorbing and collecting the impurities, with high cleaning efficiency and long maintenance cycle without affecting production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a slitting knife cleaning device provided by an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the dust collection unit in the embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall structure of the dust cover in the embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of the detergent delivery assembly in the embodiment of the utility model;

[0020] Figure 5 It is a schematic diagram of the overall structure of the clamping assembly in the embodiment of the utility model;

[0021] Figure 6 It is a schematic diagram of feedback regulation of the detergent delivery assembly in an embodiment of the utility model;

[0022] In the figure: 10, dust hood; 11, slitting knife notch; 12, positive pressure outlet; 13, negative pressure inlet; 14, positive pressure interface; 15, negative pressure interface; 16, dust hood connector; 17, dust hood bracket; 18, rubber pad; 19, connecting notch; 20, top screw; 21, magnet; 22, clamping piece; 23, cavity; 24, guide groove; 25, peristaltic pump; 26, filter screen; 27, cover; 28, detergent tank; 29, liquid level sensor. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0024] Embodiment 1:

[0025] This embodiment takes the slitting knife cleaning device configured in the slitting equipment for lithium battery production as an example to further illustrate the technical solution of the utility model.

[0026] like Figure 1 to Figure 6 As shown, a slitting knife cleaning device includes: a wiping unit for wiping impurities attached to the surface of the slitting knife; and a dust collecting unit for adsorbing and collecting impurities. The impurities in this embodiment mainly include dust and metal particles generated during the slitting of lithium battery pole pieces by the slitting knife.

[0027] The wiping unit comprises: a wiping piece for directly wiping off impurities attached to the surface of the slitting knife; a clamping assembly for fixing the wiping piece; and a detergent delivery assembly for delivering detergent to the wiping piece.

[0028] In this embodiment, the wiping piece is wool felt; and the cleaning agent is alcohol.

[0029] The clamping assembly includes a support, a clamping member 22 and a plurality of magnets 21 . The clamping member 22 is provided with a cavity 23 for accommodating a wiping member. The plurality of magnets 21 are connected to the cavity 23 by magnetic coupling to fix the wiping member. The support is used to install the clamping member 22 .

[0030] The support member adopts a structure with protrusions on both sides, which is convenient for use as a handle for lifting; at the same time, the support member is also provided with a plurality of top screws 20 for limiting the position of the clamping assembly.

[0031] The detergent delivery component includes: a peristaltic pump 25, the inlet of the peristaltic pump 25 is connected to the detergent box 28, and the outlet of the peristaltic pump 25 is connected to the guide groove 24 arranged on the clamping member 22. The peristaltic pump 25 is used to deliver the detergent in the detergent box 28 to the guide groove 24, and deliver the detergent to the wiping member through the guide groove 24.

[0032] The wiping unit fixes the wool felt through the cavity 23, wipes the slitting knife with the wool felt, and continuously and stably drips alcohol onto the wool felt through the peristaltic pump 25 to prevent the knife from sticking; through the liquid level sensor 29 in the alcohol tank (cleaner tank 28), the opening and closing of the peristaltic pump 25 is determined by the amount of alcohol, and the alcohol can also be replenished in time.

[0033] The wiping unit comprises a peristaltic pump 25, a filter screen 26, a cover 27, an alcohol tank (cleaner tank 28), a liquid level sensor 29 and a cavity 23 for accommodating wool felt. The slitting knife wiping and cleaning process is completed by a complete set of equipment.

[0034] The cavity 23 is attracted by the magnet 21, which makes it easy to replace the wool felt. At the same time, the wool felt is fixed in position by the weight of the cover itself, so that the wool felt fits the cutter, the wiping area is expanded, and the cleaning effect is better.

[0035] The filter screen 26 is installed on the cover 27 and connected to the inlet pipe of the peristaltic pump 25. The alcohol absorbed by the peristaltic pump 25 needs to be filtered through the filter screen 26. This process is to prevent the alcohol from being contaminated by dust and blocking the peristaltic pump 25 pipeline.

[0036] The dust collection unit comprises a dust collection cover 10, wherein the dust collection cover 10 has an arc surface matching the outer surface of the slitting knife stick, and the arc surface is spaced a set distance from the outer surface of the slitting knife stick.

[0037] The dust hood 10 also has a slitting knife notch 11 surrounding the cutting edge of the slitting knife, a positive pressure outlet 12 for blowing the cutting edge of the slitting knife and the slitting knife roller, and a plurality of negative pressure inlets 13 for removing impurities blown off the cutting edge of the slitting knife and the slitting knife roller by negative pressure adsorption.

[0038] The dust hood 10 also has a positive pressure interface 14 , one end of the positive pressure interface 14 is connected to the positive pressure outlet 12 , and the other end is connected to the positive pressure source.

[0039] The dust hood 10 also has a negative pressure interface 15 , one end of the negative pressure interface 15 is connected to the negative pressure inlet 13 , and the other end of the negative pressure interface 15 is connected to the negative pressure source.

[0040] The positive pressure source is an air compressor, and the negative pressure source is a vacuum pump. A flow regulating valve for regulating the gas flow is provided on the pipeline between the compressor outlet and the positive pressure interface 14. A regulating valve for regulating the vacuum degree is provided on the pipeline between the vacuum pump inlet and the negative pressure interface 15.

[0041] In this embodiment, the main body of the dust hood 10 is in a quarter-circular shape, which fits the slitting knife roller very closely; dust removal is achieved by combining positive and negative pressures, and two circulating air ducts are formed by alternating positive and negative pressures to remove dust from the surface of the slitting knife roller.

[0042] A semicircular slitting knife notch 11 is provided in the middle of the dust hood 10, firstly to fit the shape of the slitting knife, and secondly to form an enveloping structure to increase the negative pressure output acting near the slitting knife. The slitting knife notch 11 wraps the slitting knife to ensure that there is enough negative pressure to remove dust from the surface of the slitting knife; a negative pressure inlet 13 is provided at the bottom of the dust hood 10 to clean the dust and metal debris that fall onto the pole piece. All of the above are to transport dust through negative pressure to achieve efficient dust removal in the slitting process of the slitting knife.

[0043] The negative pressure interface 15 of the dust hood 10 is connected on both sides to ensure the matching of negative pressure and facilitate dust transportation.

[0044] The positive pressure of the dust collecting hood 10 adopts compressed air, and the inlet is completed with holes on both sides.

[0045] The dust cover connecting piece 16 is made of stainless steel, and the dust cover 10 and other parts are made of aluminum alloy to reduce weight and facilitate support. A rubber pad 18 is used to seal between the dust cover connecting piece 16 and the dust cover 10.

[0046] The arc surface of the dust hood 10 is provided with three notches, the middle notch is a positive pressure outlet 12, and the two sides are negative pressure inlets 13. The circulating air setting is completed by blowing in the middle and sucking on both sides, which effectively removes the dust attached to the slitting knife roller.

[0047] The dust hood connector 16 and the dust hood bracket 17 are square clamps, and the tooling adjustment is completed through the connecting notch 19, and the overall equipment is fixed by the top screw.

[0048] The dust collection part of the utility model adopts circulating air, has a simple structure and occupies a small space; the dust collection hood is designed to fit the slitting knife and can effectively remove surface dust; the dust collection hood has one cavity and multiple slots, which can remove dust from the roller, slitting knife and pole piece respectively, effectively reducing energy consumption.

[0049] The cavity of the dust collection part of the utility model is optimized through finite element simulation, so as to increase the wind speed at the slot to the maximum extent, improve the dust removal capacity and reduce the cost.

[0050] The wiping part of the utility model realizes automatic alcohol dripping through feedback regulation, thereby reducing labor costs; the wool felt fixing mechanism adopts magnets, which is simple, convenient and easy to replace.

[0051] Embodiment 2:

[0052] Based on the slitting knife cleaning device described in the first embodiment, this embodiment provides a slitting device for lithium battery production, and the slitting device for lithium battery production is equipped with the slitting knife cleaning device described in the first embodiment.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A slitting knife cleaning device, characterized in that: include: A wiping unit for wiping off impurities attached to the surface of the slitting knife; A dust collection unit for collecting impurities by adsorption; Wherein, the wiping unit comprises: A wiping member for directly wiping away impurities attached to the surface of the slitting knife; A clamping assembly for fixing the wiper; a detergent delivery assembly for delivering detergent to the wiper; The dust collection unit comprises: a dust collection hood (10), the dust collection hood (10) having an arc surface matching the outer surface of the slitting knife stick, the arc surface being spaced apart from the outer surface of the slitting knife stick by a set distance; The dust cover (10) further comprises a slitting knife notch (11) surrounding the cutting edge of the slitting knife; The dust hood (10) also has a positive pressure outlet (12) for blowing the cutting edge of the slitting knife and the slitting knife roller; The dust hood (10) also has a plurality of negative pressure inlets (13) for removing impurities swept from the cutting edge of the slitting knife and the slitting knife roller by negative pressure adsorption; The dust hood (10) further comprises a positive pressure interface (14), one end of the positive pressure interface (14) being in communication with the positive pressure outlet (12), and the other end of the positive pressure interface (14) being in communication with the positive pressure source; The dust hood (10) further comprises a negative pressure interface (15), one end of the negative pressure interface (15) being in communication with the negative pressure inlet (13), and the other end of the negative pressure interface (15) being in communication with the negative pressure source.

2. The slitting blade cleaning device according to claim 1, characterized in that: The wiping piece is wool felt.

3. The slitting blade cleaning device according to claim 1, characterized in that: The cleaning agent is alcohol.

4. The slitting blade cleaning device according to claim 1, characterized in that: The clamping assembly comprises a support member, a clamping member (22) and a plurality of magnets (21); the clamping member (22) is provided with a cavity (23) for accommodating the wiping member; the plurality of magnets (21) are connected to the cavity (23) by magnetic coupling to fix the wiping member; and the support member is used to install the clamping member (22).

5. The slitting blade cleaning device according to claim 4, characterized in that: A plurality of top screws (20) for defining the position of the clamping assembly are arranged on the support member.

6. The slitting blade cleaning device according to claim 4, characterized in that: The detergent delivery assembly comprises a peristaltic pump (25), wherein an inlet of the peristaltic pump (25) is connected to a detergent tank (28), and an outlet of the peristaltic pump (25) is communicated with a guide groove (24) provided on the clamping member (22); the peristaltic pump (25) is used to deliver the detergent in the detergent tank (28) to the guide groove (24), and to deliver the detergent to the wiping member through the guide groove (24).

7. The slitting blade cleaning device according to claim 1, characterized in that: The positive pressure source is an air compressor, and the negative pressure source is a vacuum pump.

8. A slitting device for lithium battery production, characterized in that: The slitting equipment for lithium battery production is equipped with a slitting knife cleaning device as described in any one of claims 1 to 7.

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