CN214289755U - Dust collector and lithium battery welding machine - Google Patents

Abstract

The utility model discloses a dust removing device, which is used for removing dust on a table top and comprises an air blowing piece, an upper cover and a lower cover, wherein the air blowing piece is used for blowing air to the table top; the upper cover is used for covering the table top, and the air blowing piece is arranged in the upper cover; the lower cover is positioned below the table top and is used for receiving sundries blown off by the air blowing piece. Set up the piece of blowing and blow to the mesa, set up down the cover and cover in the mesa below, debris can drop under the action of gravity in the cover down, and the reducible debris is remained on the mesa, promotes dust collection efficiency. The utility model also discloses a lithium cell welding machine of including above-mentioned dust collector.

Description

Dust collector and lithium battery welding machine

Technical Field

The utility model belongs to the technical field of the machining technique and specifically relates to a dust collector and lithium cell welding machine is related to.

Background

Many products are manufactured by welding operations, such as multiple welds, for example, lithium batteries. The welding process is usually carried out on an operation table, and the operation table needs to be cleaned by removing dust before the next batch of products are welded, so that the welding operation of the next batch of products is not influenced by metal scraps left by the previous batch of products. In the related art, the position of a dust suction part in a dust removal device is usually not reasonable enough, so that it is difficult to ensure that metal scraps on an operation table surface are completely removed, and a next batch of products are easily affected by the metal scraps left by a previous batch of products, thereby reducing the quality of the products.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a dust collector can carry out effectual cleanness to the mesa.

The utility model also provides a lithium battery welding machine.

The utility model discloses the dust collector that the embodiment of the first aspect provided for the mesa removes dust, include: the air blowing piece is used for blowing air to the table top; the upper cover is used for covering the table top, and the air blowing piece is arranged in the upper cover; and the lower cover is positioned below the table top and is used for bearing sundries blown off by the air blowing piece.

The utility model discloses the dust collector that the embodiment of the first aspect provided has following beneficial effect at least: set up the piece of blowing and blow to the mesa, set up down the cover and cover in the mesa below, debris can drop under the action of gravity in the cover down, and the reducible debris is remained on the mesa, promotes dust collection efficiency.

In some embodiments of the utility model, the inside of upper shield has blowing district and dust collection district, the piece of blowing install in the blowing district, at least part down the cover in dust collection district department exposes the mesa, the piece of blowing can make debris blown to dust collection district and drop extremely in the cover down.

In some embodiments of the present invention, the dust removing device includes a plurality of the blowing members, a plurality of the blowing members are sequentially arranged on the inner side wall of the upper cover, and located at both ends of the blowing region, the blowing members are defined in the dust collecting region.

In some embodiments of the present invention, the lower cover is provided with a collecting portion, and the collecting portion is recessed downward with respect to the upper cover.

In some embodiments of the present invention, the lower cover is further provided with a leakage preventing portion, the leakage preventing portion is located at a side portion of the collecting portion, and at least a portion of the leakage preventing portion extends to a lower portion of the table top.

In some embodiments of the present invention, the leakage preventing part includes an inclined surface inclined toward a direction close to the upper cover and away from the collecting part.

In some embodiments of the present invention, the dust removing device further comprises an exhaust pipe, and the exhaust pipe is connected to the bottom of the collecting part.

In some embodiments of the present invention, the dust removing device further comprises a rotating shaft, the rotating shaft is located in the upper cover and can rotate relative to the upper cover, the blowing member is connected to the rotating shaft, and the blowing member can follow the rotation of the rotating shaft.

In some embodiments of the present invention, the device further comprises a driving component, the driving component is connected with the upper cover and/or the lower cover, and the driving component is used for driving the upper cover and the lower cover to be mutually buckled or opened.

The utility model discloses second aspect embodiment provides a lithium battery welding machine, include: the utility model discloses the dust collector that any embodiment of the first aspect provided; a table top located between the upper cover and the lower cover.

The embodiment of the second aspect of the utility model provides a lithium battery welding machine has following beneficial effect at least: use the utility model discloses the dust collector that the embodiment of the first aspect provided removes dust to the mesa, can reduce the debris of remaining on the mesa as far as possible, and remaining metallic debris when preventing last batch lithium cell welding has guaranteed the quality of lithium cell to next batch lithium cell production influence.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic perspective view of a dust removing apparatus according to some embodiments provided by the first aspect of the present invention;

FIG. 2 is an exploded view of the dust extraction apparatus shown in FIG. 1;

FIG. 3 is a perspective view of a blowing member in the dust removing device shown in FIG. 1;

FIG. 4 is a sectional view of a blowing member in the dust removing device shown in FIG. 1;

FIG. 5 is a bottom view of the upper cover of the dust removing device shown in FIG. 1 and the air-blowing member installed inside the upper cover;

FIG. 6 is a schematic perspective view of a lower housing of the dust extraction apparatus shown in FIG. 1;

fig. 7 is a perspective view illustrating a driving assembly of a lower cover in the dust removing device of fig. 1.

Reference numerals:

the air blowing device comprises an air blowing piece 100, an air inlet part 110, an air inlet 111, an air blowing part 120, an air blowing opening 121, an air passage 122, an upper cover 200, an air blowing area 210, a dust collecting area 220, a through hole 230, a lower cover 300, a collecting part 310, a leakage-proof part 320, a connecting part 330, an inclined surface 321, an air suction pipe 400, a rotating shaft 500, a driving component 600, a sliding block 610, a lifting rod 620, an air cylinder 630, an air inlet head 631, a guide sliding block 640, a connecting piece 650 and a table board 700.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated, for example, up, down, left, right, etc., referred to the orientation description is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, reference to the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model discloses the dust collector that the embodiment of the first aspect provided for the mesa removes dust, include: an air blowing member 100 for blowing air to the table 700; an upper cover 200 for covering the table top 700, the air blowing member 100 being installed in the upper cover 200; and the lower cover 300 is positioned below the table top 700 and is used for receiving sundries blown off by the air blowing piece 100.

For example, as shown in fig. 1 and 2, the dust removing device includes a blowing member 100, an upper cover 200, and a lower cover 300. Upper cover 200 in fig. 1 is perspective-processed in order to clearly show the fitting relationship between the components. The blowing piece 100 is installed in the upper cover 200, the upper cover 200 covers the upper side of the table top 700, the lower cover 300 covers the lower side of the table top 700, when the dust removal device works, the blowing piece 100 blows sundries on the table top 700 away from the table top, the sundries fall into the lower cover 300 under the action of gravity, the residue of the sundries on the table top can be reduced, and the dust removal efficiency is improved.

It is understood that the air blowing member 100 may be directly coupled to the inside of the upper housing 200, or a bracket or the like may be provided inside the upper housing 200 to support the air blowing member 100. The shape, size, and the like of the upper cover 200 are not limited, and the entire table top 700 may be covered. The upper cover 200 may be configured to cover the table top 700, so that the air blowing members 100 can clean the table top 700 with less energy consumption. The shape, size, etc. of the lower cover 300 are not limited, but should cover at least the area where the sundries fall, so as to better receive the sundries blown off by the air blowing member 100 and prevent the sundries from scattering.

It should be noted that the air blowing member 100 may have a structure as shown in fig. 3 to 4, the air blowing member 100 includes an air inlet 110 and an air blowing part 120, the air inlet 110 is used for communicating with the air pipe, the air inlet 110 is provided with an air inlet 111, the air blowing part 120 is provided with an air blowing opening 121, and referring to fig. 4, the air inlet 111 and the air blowing opening 121 communicate with each other. The air blowing part 120 may be provided with 1 or more air blowing openings 121, and the positions, sizes, etc. of the air blowing openings 121 may be set according to actual requirements. The blowing unit 120 is provided with 1 rectangular blowing port 121, which can output uniform linear airflow, thereby completely cleaning the blown area.

The air blowing part 120 may further be provided with an air passage 122, as shown in fig. 4, the air passage 122 being located between the air blowing port 121 and the air inlet 111 so that the air blowing port 121 and the air inlet 111 communicate with each other. The air passage 122 has a large cavity, and can buffer the air blown from the air inlet 111, so that the air can be more uniformly blown from the air blowing opening 121. The shape, size, etc. of the air passage 122 may be set according to actual requirements. For example, the air passage 122 may be designed as shown in fig. 4, the cross section of the air passage 122 is stepped, and the cross section of the air passage 122 is gradually reduced in the direction of the gas flow. The gas is blown out from the gas blowing port 121 after entering the gas passage 122 from the gas inlet 110, and the stepped gas passage 122 with the sectional area gradually reduced along the flowing direction of the gas is arranged, so that the flow rate of the gas blown into the gas passage 122 can be gradually balanced, the gas blown into the gas passage 122 can be better buffered, and more uniform gas flow can be output.

Fig. 3 to 4 show only one structure of the air blowing member 100, which is not intended to limit the present invention, and the air blowing member 100 with different structures can be selected or designed according to actual installation and use requirements.

It is understood that the upper cover 200 may be provided with a through hole 230, and the through hole 230 is used for the air tube to pass through and enter the upper cover 200 to be connected with the air-blowing member 100. The air pipe supplies air to the air blowing member 100 to complete air blowing and dust removal of the table top 700. The position, number and size of the through holes 230 can be set according to actual requirements.

In some embodiments of the present invention, the upper cover 200 is provided with a blowing area 210 and a dust collecting area 220, the blowing member 100 is installed in the blowing area 210, at least a portion of the lower cover 300 exposes the table top 700 at the dust collecting area 220, and the blowing member 100 can blow the impurities to the dust collecting area 220 and fall into the lower cover 300.

For example, as shown in fig. 5, the blowing member 100 is provided in the blowing region 210 of the upper housing 200, and referring to fig. 1 to 2, a portion of the lower housing 300 is exposed from the dust collecting region 220 to the table 700. When the dust removing device works, the air blowing member 100 blows air from the air blowing area 210 to the dust collecting area 220, so that the impurities on the table top 700 are blown to the dust collecting area 220 and fall into the lower cover 300. Set up blowing district 210 and dust collection district 220 at upper shield 200, install blowing piece 100 in blowing district 210, blow the debris with concentrating to dust collection district 220 and fall to lower cover 300 in, rationally distributed, clean efficient.

It is understood that the positions of the air blowing region 210 and the dust collecting region 220 are not limited, and may be reasonably arranged according to the shapes, sizes, etc. of the upper cover 200 and the table 700. For example, the upper cover 200 may be a rectangular parallelepiped, the blowing region 210 may be disposed on only one of the sidewalls of the upper cover 200, the dust collecting region 220 may be disposed on the other three sidewalls, the blowing region 210 may be disposed on two adjacent sidewalls, the dust collecting region 220 may be disposed on the other two sidewalls, the blowing region 210 may be disposed on three adjacent sidewalls, and the dust collecting region 220 may be disposed on only the other one sidewall; the upper cover 200 can be a polyhedron, and the blowing area 210 and several side walls of the upper cover 200 can be arranged, and the dust collecting area 220 is arranged on other side walls; the upper housing 200 may be a sphere, and the blowing area 210 and the dust area 220 may be arranged on two opposite arcs. In the case of the table 700 having holes, it is also possible to arrange the blowing area 210 at all inner sidewalls of the upper housing 200 and the dust collecting area 220 at the corresponding positions of the holes of the table 700, and the blowing member 100 blows the sundries to the holes of the table 700 and drops the sundries from the holes into the lower housing 300.

In some embodiments of the present invention, the dust removing device includes a plurality of blowing members 100, the plurality of blowing members 100 are sequentially arranged on the inner sidewall of the upper cover 200, and the blowing members 100 located at both ends of the blowing region 210 define the dust collecting region 220.

For example, as shown in fig. 1 to 2, the table top 700 is rectangular, referring to fig. 5, the upper cover 200 is rectangular, the plurality of blowing members 100 are sequentially arranged on the inner side wall of the upper cover 200, the plurality of blowing members 100 are respectively located above two short sides and one long side of the table top 700, two ends of the blowing region 210, namely, the blowing members 100 above the two short sides of the table top 700 define a dust collecting region 220, the blowing members 100 above the two short sides of the table top 700 can respectively blow air to the center of the table top 700 from the corresponding short sides, the blowing members 100 above the long side of the table top 700 can blow air to the other long side from the corresponding long side, all the blowing members 100 can cooperate with each other to blow the dust collecting region 220 together, so that the impurities fall into the lower cover 300 from the edge of the table top 700, the layout is reasonable, and the cleaning efficiency is high.

It is to be understood that the number of the air blowing members 100 is not limited to the illustrated number, and may be set according to the shape, size, etc. of the table top 700. The location of the blowing section 210 may be reasonably arranged according to the shape, size, etc. of the upper housing 200. For example, when the upper cover 200 is a rectangular parallelepiped, not only the blowing region 210 may be disposed on three adjacent sidewalls of the upper cover 200 and the dust collecting region 220 may be disposed on only one of the other sidewalls, as shown in fig. 3, but also the blowing region 210 may be disposed on only one of the sidewalls of the upper cover 200 and the dust collecting region 220 may be disposed on the other three sidewalls, or the blowing region 210 may be disposed on two adjacent sidewalls and the dust collecting region 220 may be disposed on the other two sidewalls; the upper cover 200 may also be a polyhedron, and the blowing area 210 may be disposed on several side walls of the upper cover 200, and the dust collecting area 220 may be disposed on other side walls; the upper housing 200 may also be a sphere, and the blowing zone 210 and the dust collection zone 220 may be arranged on two opposite arcs.

In some embodiments of the present invention, the lower cover 300 is provided with a collecting portion 310, and the collecting portion 310 is recessed downward with respect to the upper cover 200.

For example, as shown in fig. 6, the lower cover 300 is provided with a collecting portion 310, and the collecting portion 310 is recessed downward with respect to the upper cover 200. The sundries dropped into the lower cover 300 can roll down to the bottom of the collecting part 310 under the action of gravity, so that the sundries can be collected conveniently.

It is understood that the collection portion 310 may be funnel-shaped, bowl-shaped, hemispherical, etc.

In some embodiments of the present invention, the lower cover 300 is further provided with a leakage preventing part 320, the leakage preventing part 320 is located at a side portion of the collecting part 310, and at least a portion of the leakage preventing part 320 extends to a lower portion of the table top 700.

For example, as shown in fig. 6, the leakage preventing portion 320 is located at the side of the collecting portion 310, and during the operation of the dust removing device, the impurities are blown into the lower cover 300 by the air blowing member 100, and the impurities may be scattered out of the collecting portion 310 by inertia. The leakage-proof part 320 is arranged, the leakage-proof part 320 can block sundries, and the sundries scattered out of the collecting part 310 can be collected in the leakage-proof part 320, so that the scattering condition of the sundries can be reduced, and the cleanness of the use environment is ensured.

It is understood that the shape of the leakage preventing part 320 is not limited and may be designed according to actual installation and use requirements.

In some embodiments of the present invention, the leakage preventing part 320 includes an inclined surface 321, and the inclined surface 321 is inclined toward a direction close to the upper cover 200 and away from the collecting part 310.

For example, as shown in fig. 6, the leakage preventing part 320 includes 4 inclined surfaces 321, the inclined surfaces 321 are inclined toward the upper cover 200 and away from the collecting part 310, and the impurities falling on the inclined surfaces 321 can roll down along the inclined surfaces 321 into the collecting part 310, so that the collecting effect of the impurities is improved.

It is understood that the number of the inclined surfaces 321 is not limited to the number shown in fig. 6, and one or more inclined surfaces 321 may be provided at the leakage preventing part 320, and may be designed according to actual installation and use requirements.

In some embodiments of the present invention, the dust removing apparatus further includes an exhaust tube 400, and the exhaust tube 400 is connected to the bottom of the collecting portion 310.

For example, as shown in fig. 6, the suction pipe 400 is connected to the lower cover 300, and referring to fig. 1 and 2, when the dust removing device is operated, the dust is blown down to the lower cover 300 and rolls down to the bottom of the collecting part 310, and the suction pipe 400 is sucked by the blower to suck the blown-down dust. Due to the gravity of the impurities, the impurities in the lower cover 300 can be sucked with less energy consumption by arranging the suction pipe 400 at the bottom of the collecting part 310.

In some embodiments of the present invention, the dust removing device further includes a rotating shaft 500, the rotating shaft 500 is located in the upper housing 200 and can rotate relative to the upper housing 200, the air blowing member 100 is connected to the rotating shaft 500, and the air blowing member 100 can rotate along with the rotating shaft 500.

For example, as shown in fig. 3, the blowing member 100 is connected to the rotation shaft 500 and can rotate following the rotation shaft 500. Referring to fig. 1 to 2, the rotating shaft 500 of the blowing member 100 is rotatably connected to the upper housing 200, and the rotating shaft 500 drives the blowing member 100 to rotate, so that the blowing port 121 can blow more areas of the table top 700, thereby cleaning the table top 700 more completely and reducing impurities remained on the table top 700 as much as possible.

It is understood that the air blowing member 100 may be directly rotatably coupled to the inside of the upper housing 200, or a bracket or the like may be provided inside the upper housing 200, and the air blowing member 100 may be rotatably coupled to the bracket or the like. The blowing member 100 may be coupled to the rotating shaft 500 by means of a bolt connection, a snap connection, an adhesive connection, or the like. A motor, a pneumatic system, etc. may be provided to drive the rotation shaft 500 to rotate, and the rotation speed, angle, etc. may be set according to actual requirements.

In some embodiments of the present invention, the present invention further comprises a driving assembly 600, the driving assembly 600 is connected to the upper cover 200 and/or the lower cover 300, and the driving assembly 600 is used for driving the upper cover 200 and the lower cover 300 to be locked or unlocked with each other.

For example, as shown in fig. 1 to 2, the driving assembly 600 is connected to the upper cover 200 and the lower cover 300, respectively, when dust removal is required for the table top 700, the driving assembly 600 drives the upper cover 200 and the lower cover 300 to approach each other until being fastened, and then dust removal is performed for the table top 700, after dust removal is completed, the driving assembly 600 drives the upper cover 200 and the lower cover 300 to move away from each other, and then subsequent operations are continued on the table top 700.

It is understood that the driving assembly 600 may be coupled to only the upper housing 200 or only the lower housing 300. When the driving assembly 600 is only connected to the upper housing 200, the lower housing 300 should be fixed below the table top 700, and the driving assembly 600 drives the upper housing 200 to approach the table top 700; when the driving assembly 600 is only connected to the lower housing 300, the lower housing 300 should be fixed under the table top 700, and the lower housing 300 and the table top 700 are driven together to approach the upper housing 200 by the driving assembly 600.

The driving members in the driving assembly 600 may be motors, hydraulics, pneumatics, etc. For example, a pneumatic device as shown in fig. 7 may be used to drive the lower cover 300. The driving assembly 600 comprises a slider 610, a lifting rod 620 and an air cylinder 630, wherein the slider 610 is connected to the lower cover 300, one end of the lifting rod 620 is connected to the slider 610, the other end of the lifting rod 620 is connected to a piston in the air cylinder 630, and an air inlet 631 is arranged on the air cylinder 630. Before the table top 700 is dedusted, air is supplied into the air cylinder 630 from the air inlet head 631, so that the lifting rod 620 moves upwards to drive the sliding block 610 and the lower cover 300 to move upwards and be buckled below the table top 700; after the dust removal is finished, the gas in the cylinder 630 is exhausted from the gas inlet 631, and the lifting rod 620 drives the sliding block 610 and the lower cover 300 to descend, so as to process the next batch of products on the table 700. It is understood that, referring to fig. 6, the lower housing 300 may further be provided with a connection part 330, and the slider 610 is connected to the connection part 330. The slider 610 and the connecting portion 330 can be connected by gluing, snapping, screwing, etc.

The driving assembly 600 may further include a slider guide or other structure having a guiding function for driving the upper housing 200 and/or the lower housing 300 to move, so that the upper housing 200 and the lower housing 300 can be more precisely engaged with each other, and the upper housing 200 or the lower housing 300 is prevented from being positionally displaced to interfere with the table top 700 or cause impurities to escape. For example, referring to fig. 7, the driving assembly 600 includes a slider 610, a lift rod 620, and a cylinder 630, the slider 610 is coupled to the lower housing 300, and the lift rod 620 has one end coupled to the slider 610 and the other end coupled to a piston in the cylinder 630. The cylinder 630 limits the lifting rod 620 to move only up and down, and drives the lower cover 300 to move up and down, so that the lower cover 300 and the upper cover 200 can be buckled or unlocked with each other.

A slider guide structure may be employed to drive the upper housing 200. Referring to fig. 1 and 2, the driving assembly 600 includes a slider guide 640, a connecting plate 650, and a guide rail (not shown), the slider guide 640 is connected to the connecting plate 650, the connecting plate 650 is connected to the upper housing 200, and the slider guide 640 is slidably connected to the guide rail. The guide rail can limit the guide block 640 to move only up and down, the guide block 640 is connected to the driving member, and the driving member drives the guide block 640 to move up and down in the slide rail, so as to drive the upper cover 200 to move up and down, thereby enabling the upper cover 200 and the lower cover 300 to be mutually buckled or opened. The connecting piece 650 and the guide block 640 can be integrally formed, and can also be connected by gluing, buckling, threaded connection and the like; the connecting piece 650 and the upper housing 200 may be connected by gluing, snapping, screwing, etc.

The utility model discloses second aspect embodiment provides a lithium battery welding machine, include: the utility model discloses the dust collector that any embodiment of the first aspect provided; and a table 700 between the upper and lower housings 200 and 300.

In the production and manufacturing process of the lithium battery, a plurality of welding processes are required and are required to be carried out on the table top 700. The table 700 is located between the upper housing 200 and the lower housing 300. Use the utility model discloses the dust collector that any embodiment of the first aspect provided removes dust to mesa 700, can carry out comparatively comprehensive cleanness to mesa 700, reduces the debris of remaining on mesa 700 as far as possible, and remaining metallic debris when preventing the welding of last batch lithium cell produces the influence to next batch lithium cell, has guaranteed the quality of lithium cell.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Dust collector for the mesa removes dust, its characterized in that includes:

the air blowing piece is used for blowing air to the table top;

the upper cover is used for covering the table top, and the air blowing piece is arranged in the upper cover;

and the lower cover is positioned below the table top and is used for bearing sundries blown off by the air blowing piece.

2. The dust removing device of claim 1, wherein the upper housing has a blowing area and a dust collecting area inside, the blowing member is installed in the blowing area, at least a portion of the lower housing is exposed from the dust collecting area, and the blowing member enables the dust to be blown toward the dust collecting area and fall into the lower housing.

3. The dust removing device according to claim 2, comprising a plurality of the blowing members, the plurality of the blowing members being sequentially arranged on an inner side wall of the upper housing, the blowing members located at both ends of the blowing area defining the dust collecting area.

4. A dusting apparatus according to claim 1, characterized in that the lower cover is provided with a collecting portion which is recessed downwards relative to the upper cover.

5. The dust removing device of claim 4, wherein the lower cover is further provided with a leakage preventing portion which is located at a side portion of the collecting portion, at least a portion of the leakage preventing portion extending to below the table top.

6. The dust removing device according to claim 5, wherein the leakage preventing portion includes an inclined surface inclined toward a direction close to the upper cover and away from the collecting portion.

7. The dust removing device according to claim 4, further comprising an air suction pipe connected to a bottom of the collecting portion.

8. The dust removing device according to any one of claims 1 to 7, further comprising a rotating shaft which is located inside the upper cover and can rotate relative to the upper cover, the air blowing member being connected to the rotating shaft, the air blowing member being capable of rotating with the rotating shaft.

9. The dust removing device of any one of claims 1 to 7, further comprising a driving assembly, wherein the driving assembly is connected with the upper cover and/or the lower cover, and the driving assembly is used for driving the upper cover and the lower cover to be mutually buckled or opened.

10. Lithium cell welding machine, its characterized in that includes:

the dust removing device of any one of claims 1 to 9;

a table top located between the upper cover and the lower cover.

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