Tab burr removing device

Abstract

The utility model discloses a pole lug burr removing device, a pole lug comprises a plurality of sheet bodies which are arranged in a stacked mode in the thickness direction, the pole lug burr removing device comprises a clamping assembly and a cleaning assembly, the clamping assembly comprises a first clamping piece and a second clamping piece, and the first clamping piece and the second clamping piece are arranged in a staggered mode. The first clamping piece and the second clamping piece can be switched between a clamping state and an opening state, and the clamping assembly is configured to clamp the tab and expose the cutting end face of the tab in the clamping state; the cleaning assembly is configured to be used for cleaning the cutting end face of the tab. The tab burr removing device can clean burrs of the tabs, and the tabs are not prone to being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field especially relates to a tab burr removal device. BACKGROUND

[0002] In the production and manufacturing process of lithium ion battery cell, the burr specification of the tab after cutting in the cell manufacturing process needs to be strictly controlled, if the tab burr of the cell is unqualified, it will lead to short circuit of the cell, quality decline, even serious problems such as product explosion, especially for the tab formed by stacking multiple sheet bodies, since the single sheet body is relatively thin, the prior art is difficult to meet the quality demand of burr removal without damaging the sheet body. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art is solved, for this purpose, the utility model provides a tab burr removal device, can effectively clean the burr of tab, and it is difficult to damage the tab.

[0004] The utility model discloses a tab burr removal device, the tab includes a plurality of sheet bodies arranged in the thickness direction, and the tab burr removal device includes:

[0005] The clamping assembly includes a first clamping piece and a second clamping piece, and the first clamping piece and the second clamping piece can be switched between a clamping state and an open state.

[0006] The cleaning assembly is configured to clean the cutting end face of the tab.

[0007] The tab burr removal device according to the utility model has at least the following beneficial effects: the clamping assembly in the clamping state clamps the tab and exposes the cutting end face of the tab, and the cleaning assembly can clean the cutting end face of the tab, thereby removing the burr on the cutting end face of the tab.

[0008] According to some embodiments of the utility model, the tab includes a first end and a second end arranged oppositely, the first end is used for connecting the tab sheet, the second end has the cutting end face, and the extension length of the first clamping piece and the second clamping piece is less than the extension length of the tab in the direction from the first end to the second end.

[0009] According to some embodiments of the present application, the tab burr removing device further comprises a first driving member, the first driving member is connected to at least one of the cleaning assembly and the clamping assembly, and is used to drive at least one of the cleaning assembly and the clamping assembly to move relative to the other, so that the cleaning assembly contacts the cutting end face of the tab, or the cleaning assembly is separated from the cutting end face of the tab.

[0010] According to some embodiments of the present application, the cleaning assembly comprises a rolling brush and a second driving member, the rolling brush comprises a rotating shaft and brush hairs arranged on the rotating shaft, and the second driving member is connected to the rotating shaft and is configured to drive the rolling brush to rotate to clean the cutting end face.

[0011] According to some embodiments of the present application, the second driving member is configured to drive the rolling brush to rotate in a first direction to perform a first cleaning operation on the cutting end face, and drive the rolling brush to rotate in a second direction after the first cleaning operation to perform a second cleaning operation on the cutting end face, the first direction being opposite to the second direction.

[0012] According to some embodiments of the present application, the cleaning assembly further comprises a rolling brush cleaning assembly, the rolling brush cleaning assembly is arranged parallel to the axis of the rotating shaft, and the rolling brush cleaning assembly is arranged on the rotating path of the brush hairs.

[0013] According to some embodiments of the present application, the material of the brush hairs is nylon;

[0014] According to some embodiments of the present application, the length of the brush hairs extending out of the rotating shaft is between 15mm and 40mm;

[0015] According to some embodiments of the present application, the length direction of the brush hairs is inclined to the axis direction of the rotating shaft.

[0016] According to some embodiments of the present application, the cleaning assembly comprises a cleaning brush and a third driving member, the cleaning brush comprises a base and brush hairs arranged on the base, and the third driving member is connected to the base and is configured to drive the cleaning brush to move along the stacking direction of the pieces to clean the cutting end face.

[0017] According to some embodiments of the present application, the tab burr removing mechanism further comprises a dust collection assembly arranged on at least one side of the cleaning assembly, the dust collection assembly has a dust collection port, and the dust collection port faces the contact position of the cleaning assembly contacting the cutting end face.

[0018] According to some embodiments of the utility model, the tab burr removing mechanism further comprises a dust suction assembly, the dust suction assembly comprises an outer cover body, the outer cover body has a dust suction cavity and a dust suction port communicated with the dust suction cavity, and the cleaning assembly is arranged in the dust suction cavity and is arranged towards the dust suction port.

[0019] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further explained in combination with the drawings and embodiments, wherein:

[0021] Figure 1 It is the structure schematic diagram of tab burr removing device of the utility model embodiment;

[0022] Figure 2 It is the local section view schematic diagram of tab burr removing device of the utility model embodiment.

[0023] Reference signs:

[0024] 100, clamping assembly;110, first clamping piece;120, second clamping piece;

[0025] 200, cleaning assembly;210, rolling brush;211, rotating shaft;212, brush hair;220, second driving piece;

[0026] 300, first driving piece;

[0027] 400, dust suction assembly;400a, dust suction port;410, outer cover body;400b, dust suction cavity;

[0028] 10, tab;

[0029] 20, pole piece. DETAILED DESCRIPTION

[0030] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and cannot be understood as the limitation of the utility model.

[0031] In the description of the utility model, it is understood that the direction description, such as the direction or position relation of up, down, front, back, left, right and the like indicated is the direction or position relation based on the drawing shown, only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the limitation of the utility model.

[0032] In the description of the utility model, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number.If the first, second are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0033] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood in a broad sense, and the skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0034] In the description of the utility model, the description of reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] In the related art, the upper and lower pressing tab method is used to make the tab burr fall off, so as to achieve the purpose of removing the burr. However, with the continuous improvement of the quality requirements of lithium ion battery, the upper and lower pressing tab method cannot effectively meet the quality requirements of removing the burr.

[0036] There is a technical scheme to disclose a tab processing technology, comprising a first rolling brush and a second rolling brush, the first rolling brush and the second rolling brush have a gap for the tab to pass through. The first rolling brush is located above the tab, and the second rolling brush is located below the tab. The tab moves on the production line, and the upper and lower surfaces of the tab are cleaned by the first rolling brush and the second rolling brush, thereby realizing the removal of the burr. However, for the tab including a plurality of stacked sheets, since the thickness of a single sheet is very thin, and the edge of the sheet is not welded and connected, the uppermost sheet and the lowermost sheet in the thickness direction of the tab are easily deformed or even torn and damaged during the process of cleaning the upper and lower surfaces of the tab by the rolling brush, which affects the product quality.

[0037] For this purpose, reference is made to Figure 1 and Figure 2 The embodiment of the present application provides a tab burr removing device, which comprises a clamping assembly 100 and a cleaning assembly 200. The tab 10 comprises a plurality of stacked sheet bodies.

[0038] The clamping assembly 100 is used for clamping the tab 10. The clamping assembly 100 comprises a first clamping piece 110 and a second clamping piece 120, and the first clamping piece 110 and the second clamping piece 120 can move relative to each other or move away from each other, so that the first clamping piece 110 and the second clamping piece 120 are switched between a clamping state and an open state. The clamping assembly 100 is configured to clamp the tab 10 and expose the cutting end face of the tab 10 when in the clamping state. The tab 10 is formed during cutting, and the cutting end face is generated during cutting. The burrs are formed on the edges of the cutting end face. When in the clamping state, the clamping assembly 100 clamps the two surfaces of the tab 10 in the thickness direction.

[0039] The cleaning assembly 200 is configured to clean the cutting end face of the tab 10 to remove the burrs.

[0040] In the above embodiment, the clamping assembly 100 in the clamping state clamps the tab 10 and exposes the cutting end face of the tab 10. The cleaning assembly 200 can clean the cutting end face of the tab 10, thereby removing the burrs on the cutting end face of the tab 10. Since the cleaning assembly 200 can directly clean the cutting end face of the tab 10, damage to the sheet bodies at the uppermost and lowermost positions in the thickness direction of the tab 10 is largely avoided, and the yield is improved.

[0041] It can be understood that the tab 10 comprises a first end and a second end arranged opposite to each other, the first end is used for connecting the tab sheet 20, and the second end has a cutting end face. The tab sheet 20 has an active substance layer for storing and releasing electric charges.

[0042] In some embodiments, in the direction from the first end to the second end, the extension lengths of the first clamping piece 110 and the second clamping piece 120 are both less than the extension length of the tab 10. In this way, when the first clamping piece 110 and the second clamping piece 120 are in the open state, the tab 10 can extend into the gap between the first clamping piece 110 and the second clamping piece 120, the second end with the cutting end face can extend out of the gap, so as to facilitate the cleaning assembly 200 to clean the cutting end face of the tab 10, and the first end connected to the tab sheet 20 can also be outside the gap, so as to avoid the tab sheet 20 being clamped by the first clamping piece 110 and the second clamping piece 120.

[0043] In the above embodiments, the first clamping member 110 and the second clamping member 120 can be made of insulating non-metallic material. It can be understood that, since the tab 10 is made of metal, the use of insulating non-metallic material can avoid contamination of the tab 10. In some embodiments, the insulating non-metallic material is polyether ether ketone.

[0044] In some embodiments, the tab burr removing device further comprises a first driving member 300 connected to at least one of the cleaning assembly 200 and the clamping assembly 100, for driving at least one of the cleaning assembly 200 and the clamping assembly 100 to move relative to the other, so as to make the cleaning assembly 200 contact the cut end surface of the tab 10, or make the cleaning assembly 200 separate from the cut end surface of the tab 10. That is, the first driving member 300 can drive the cleaning assembly 200 to move relative to or away from the clamping assembly 100, or can drive the clamping assembly 100 to move relative to or away from the cleaning assembly 200, or can drive both the cleaning assembly 200 and the clamping assembly 100 to move relative to or away from each other.

[0045] When the cleaning assembly 200 moves relative to the clamping assembly 100 or the clamping assembly 100 moves relative to the cleaning assembly 200 or both the cleaning assembly 200 and the clamping assembly 100 move relative to each other, the cleaning assembly 200 will move towards the tab 10 to clean the cut end surface of the tab 10 to remove the burr. After the burr is removed, the cleaning assembly 200 moves away from the clamping assembly 100 or the clamping assembly 100 moves away from the cleaning assembly 200 or both the cleaning assembly 200 and the clamping assembly 100 move away from each other, so that the cleaning assembly 200 moves away from the tab 10, thereby facilitating the removal of the cleaned tab 10 and the entry of a new tab 10 to be cleaned between the first clamping member and the second clamping member.

[0046] In some embodiments, the first driving member 300 can be a pneumatic cylinder. In order to improve the positioning accuracy, a limiting member can be arranged at the end of the stroke of the pneumatic cylinder. When the movable rod of the pneumatic cylinder moves to the end of the stroke, it can be limited by the limiting member, thereby ensuring the positioning accuracy of the movable rod of the pneumatic cylinder at the end of the stroke, that is, ensuring the relative position accuracy between the cleaning assembly 200 at the end of the stroke and the tab 10. In other embodiments, the first driving member 300 is a servo motor to improve the positioning accuracy.

[0047] It can be understood that the specific structure of the cleaning assembly 200 is not limited.

[0048] In some embodiments, the cleaning assembly 200 comprises a rolling brush 210 and a second driving member 220. The rolling brush 210 comprises a rotating shaft 211 and brush hairs 212 arranged on the rotating shaft 211. The second driving member 220 is connected to the rotating shaft 211 and configured to drive the rolling brush 210 to rotate to clean the cutting end surface of the tab 10. In some embodiments, the second driving member 220 is arranged at one end of the rotating shaft 211 and connected to the rotating shaft 211. The second driving member 220 can be a motor. The motor drives the rotating shaft 211 to rotate, and the brush hairs 212 rotate with the rotating shaft 211. The rotating brush hairs 212 contact and slide on the cutting end surface of the tab 10 to clean the cutting end surface.

[0049] In some other embodiments, the cleaning assembly 200 comprises a cleaning brush and a third driving member. The cleaning brush comprises a base and brush hairs arranged on the base. The third driving member is connected to the base and configured to drive the cleaning brush to move along the stacking direction of the pieces to clean the cutting end surface. In other words, the third driving member can drive the cleaning brush to reciprocate along the thickness direction of the tab 10, so that the brush hairs contact and slide on the cutting end surface to clean the cutting end surface.

[0050] In the following, the rolling brush 210 is taken as an example for illustration:

[0051] In some embodiments, the second driving member 220 is configured to drive the rolling brush 210 to rotate in a first direction to perform a first cleaning operation on the cutting end surface, and to drive the rolling brush 210 to rotate in a second direction after the first cleaning operation to perform a second cleaning operation on the cutting end surface. The first direction is opposite to the second direction.

[0052] It can be understood that the rolling brush 210 rotating in the first direction applies a force in the first direction to the burr, and the rolling brush 210 rotating in the second direction applies a force in the opposite direction to the burr. Thus, the burr can be repeatedly bent in opposite directions to generate alternating stress, and the burr can be separated from the tab 10. Compared with the rolling brush 210 that can only rotate in one direction, the rolling brush 210 that can rotate in two opposite directions can make the burr more easily fall off, thereby improving the cleaning effect.

[0053] It can be understood that during the cleaning process, the rolling brush 210 rotating in the first direction and rotating in the second direction can be alternately performed and repeated multiple times to improve the cleaning effect. In some embodiments, the sum of the time length of the first cleaning operation and the time length of the second cleaning operation is not more than 1 second, so as to control the cleaning time.

[0054] In order to improve the cleaning effect on the burr, in some embodiments, the length direction of the brush hairs 212 is inclined to the axis direction of the rotating shaft 211.

[0055] It can be understood that when the tab 10 is cut, the cutting is performed along the thickness direction of the tab 10, and the burrs generated after the cutting basically extend along the thickness direction of the tab 10. The tab 10 is clamped along the thickness direction after the cutting, that is, the clamping direction is also the thickness direction of the tab 10.

[0056] By tilting the length direction of the bristles 212 relative to the axis center line of the rotating shaft 211, the bristles 212 have a certain length in the extension direction of the axis center of the rotating shaft 211 in the rotating state of the roller brush 210, which makes the bristles 212 more easily contact the burrs in the rotating process, and compared with the vertically arranged bristles 212, the possibility of the burrs passing through the gap between the adjacent bristles 212 without being cleaned by the roller brush 210 is greatly reduced.

[0057] Further, in some embodiments, the intersection angle between the extension direction of the bristles 212 and the axis center line of the rotating shaft 211 on the plane passing through the axis center line of the rotating shaft 211 and the bristles 212 is 60°.

[0058] The material of the bristles 212 is not limited, and in some embodiments, the material of the bristles 212 is nylon. Among them, the nylon material has high durability and good softness, and is not easy to cause damage to the tab 10 in the process of cleaning the burrs.

[0059] The length of the bristles 212 is not limited, and in some embodiments, the length of the bristles 212 extending out of the rotating shaft 211 is between 15mm-40mm. In the above range, the bristles 212 can have a better cleaning effect, and in the normal state, the bristles 212 will not be bent obviously. Specifically, the length of the bristles 212 extending out of the rotating shaft 211 can be 15mm, 20mm, 30mm or 40mm.

[0060] In order to facilitate the burrs to separate from the roller brush 210, in some embodiments, the cleaning assembly 200 further comprises a roller brush cleaning assembly, which is arranged parallel to the axis center of the rotating shaft 211 and is arranged in the rotating path of the bristles 212. The burrs adhered to the bristles 212 are cleaned by the roller brush cleaning assembly.

[0061] Among them, the roller brush cleaning assembly can be a comb structure. In some embodiments, the roller brush cleaning assembly is a stop rod, which is a rod structure. The bristles 212 can contact the stop rod and bend during rotation, and after separating from the stop rod, the bristles 212 rebound to shake the bristles 212, so that the burrs separate from the bristles 212.

[0062] In order to avoid the contamination of the lugs 10 by the falling burrs, in some embodiments, the lug burr removing mechanism further comprises a dust suction assembly 400 arranged on at least one side of the cleaning assembly 200. In some embodiments, the dust suction assembly 400 can be arranged on one side of the cleaning assembly 200, i.e. on the upper side or the lower side of the cleaning assembly 200. In some embodiments, the dust suction assembly 400 can be arranged on both sides of the cleaning assembly 200, i.e. on the upper side and the lower side of the cleaning assembly 200.

[0063] The dust suction assembly 400 has a dust suction port 400a, which is arranged to face the contact position between the cleaning assembly 200 and the cutting end face. It can be understood that the falling burrs are likely to contaminate the lugs 10. By arranging the dust suction assembly 400, the dust suction port 400a is arranged to face the contact position between the cleaning assembly 200 and the cutting end face, so that the falling burrs can be sucked into the dust suction assembly 400 through the dust suction port 400a. In some embodiments, in order to ensure the dust suction effect, the air speed of the dust suction port 400a is greater than 20 m / s.

[0064] In some embodiments, the dust suction assembly 400 comprises an outer cover 410, the dust suction port 400a is arranged on the outer cover 410, the outer cover 410 has a dust suction cavity 400b which is in communication with the dust suction port 400a, the dust suction cavity 400b is in communication with a negative pressure source, under the driving of the negative pressure source, air enters the dust suction cavity 400b through the dust suction port 400a, and is discharged after passing through a filter assembly and the negative pressure source. The cleaning assembly 200 is arranged in the dust suction cavity 400b and faces the dust suction port 400a. In some embodiments, the cleaning assembly 200 can be arranged entirely in the dust suction cavity 400b, and the lugs 10 extend into the dust suction cavity 400b from the dust suction port 400a, so that the contact position between the cleaning assembly 200 and the lugs 10 is arranged in the dust suction cavity 400b. In some embodiments, the cleaning assembly 200 can be arranged partially in the dust suction cavity 400b and partially outside the dust suction cavity 400b, so that the lugs 10 do not need to extend into the dust suction cavity 400b. In some embodiments, when the cleaning assembly 200 comprises a roller brush 210 or a cleaning brush, the bristles 212 of the roller brush 210 or the cleaning brush can extend out of the dust suction port 400a.

[0065] It can be understood that, by arranging the cleaning assembly 200 in the dust suction cavity 400b of the dust suction assembly 400, the burrs adhered to the roller brush 210 can fall into the dust suction cavity 400b, so as to improve the cleaning effect of the burrs and further reduce the possibility of contamination of the lugs 10 by the burrs.

[0066] In some embodiments, the roller brush cleaning assembly can be arranged in the outer cover 410.

[0067] In order to keep the position of the outer cover 410 and the rolling brush 210 relatively fixed. In some embodiments, the first driving member 300 is drivingly connected with the outer cover 410 of the dust collection assembly 400, and the cleaning assembly 200 is arranged in the dust collection cavity 400b of the outer cover 410. The dust collection assembly 400 and the cleaning assembly 200 are driven to move by the first driving member 300. In this way, it is ensured that burrs can be continuously adsorbed by the dust collection cavity 400b. Wherein, the first driving member 300 can be arranged above the outer cover 410.

[0068] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A tab burr removing device, the tab including a plurality of pieces stacked in a thickness direction, characterized by, The tab burr removing device comprises: a clamping assembly comprising a first clamping member and a second clamping member, the first clamping member and the second clamping member being switchable between a clamped state and an open state, the clamping assembly being configured to clamp the tab and expose a cut end face of the tab when in the clamped state; a cleaning assembly configured to clean the cut end face of the tab.

2. The tab burr removing apparatus according to claim 1, wherein The tab comprises a first end and a second end arranged oppositely, the first end being configured to connect to a tab piece, the second end having the cut end face, the first clamping member and the second clamping member each having an extension length smaller than an extension length of the tab along a direction from the first end to the second end.

3. The tab burr removing apparatus according to claim 1, wherein The tab burr removing device further comprises a first driving member connected to at least one of the cleaning assembly and the clamping assembly, the first driving member being configured to drive the at least one of the cleaning assembly and the clamping assembly to move relative to the other to cause the cleaning assembly to contact the cut end face of the tab or to cause the cleaning assembly to separate from the cut end face of the tab.

4. The tab burr removing apparatus according to claim 1, wherein The cleaning assembly comprises a rolling brush and a second driving member, the rolling brush comprising a rotating shaft and brush hairs arranged on the rotating shaft, the second driving member being connected to the rotating shaft and configured to drive the rolling brush to rotate to clean the cut end face.

5. The tab burr removing apparatus according to claim 4, wherein The second driving member is configured to drive the rolling brush to rotate in a first direction to perform a first cleaning operation on the cut end face and to drive the rolling brush to rotate in a second direction to perform a second cleaning operation on the cut end face after the first cleaning operation, the first direction being opposite to the second direction.

6. The tab burr removing apparatus according to claim 4, wherein The cleaning assembly further comprises a rolling brush cleaning assembly arranged parallel to an axis of the rotating shaft and arranged in a rotating path of the brush hairs.

7. The tab burr removing apparatus according to claim 4, wherein The brush hairs are made of nylon. The length of the brush hairs extending out of the rotating shaft is between 15mm and 40mm. The length direction of the brush hairs is inclined to the axis direction of the rotating shaft.

8. The tab burr removing apparatus according to claim 1, wherein The cleaning assembly comprises a cleaning brush and a third driving member, the cleaning brush comprising a base and brush hairs arranged on the base, the third driving member being connected to the base and configured to drive the cleaning brush to move along a stacking direction of the tab pieces to clean the cut end face.

9. The tab burr removing apparatus according to claim 1, wherein The tab burr removing mechanism further comprises a dust suction assembly arranged on at least one side of the cleaning assembly, the dust suction assembly having a dust suction port facing a contact position of the cleaning assembly contacting the cut end face.

10. The tab burr removal device of claim 1, wherein The tab burr removing mechanism further comprises a dust suction assembly, the dust suction assembly comprising an outer housing having a dust suction cavity and a dust suction port in communication with the dust suction cavity, the cleaning assembly being arranged in the dust suction cavity and facing the dust suction port.

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