Mechanism for automatically wiping surface of lithium battery cell on assembly line

Abstract

The utility model relates to a mechanism for automatically wiping the surface of a lithium battery cell on an assembly line. The mechanism comprises a wiping mechanism arranged on a conveyor belt, the wiping mechanism comprises a wiping block capable of adjusting the distance between the wiping block and the transmission belt; the bottom of the wiping block is wrapped with wiping cloth; a V-shaped groove is formed in the top of the wiping block; the V-shaped groove is connected with a cleaning container; and a plurality of communicating holes penetrating to the bottom of the wiping block are formed in the bottom of the V-shaped groove. According to the utility model, the battery cell is automatically wiped and cleaned, and the labor cost is effectively reduced. Quantitative control over consumables such as dust-free cloth and cleaning fluid is achieved, and waste and uncontrollability caused by manual operation are reduced.

Description

Technical Field

[0001] The utility model relates to the field of lithium batteries, in particular to a mechanism for automatically wiping the surface of lithium battery cells on an assembly line. Background Art

[0002] Soft-pack lithium batteries are widely used in consumer electronics such as mobile phones, drones, notebooks, and smart wearables. The production of lithium batteries requires more than 20 processes. They are relatively sophisticated electronic products. Lithium batteries must meet strict cleanliness requirements during the production process. In the process of each process, oil and dust will inevitably adhere to the surface of the battery cell. These dust and oil stains will affect the appearance and the pass rate of the next process. In severe cases, they will cause a short circuit between the positive and negative electrodes inside the battery cell, resulting in damage to the battery cell and even a fire hazard. Therefore, the battery cell must be wiped in each key process.

[0003] At present, the wiping of lithium battery cells is generally done manually, which is very labor-intensive. Often, two people are required to perform one wiping process. In the current environment of shortage of operators, this is a huge waste. It is necessary to make an automatic wiping mechanism to save labor. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In order to solve the above problems in the prior art, the utility model provides a mechanism for automatically wiping the surface of lithium battery cells on an assembly line.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] A mechanism for automatically wiping the surface of lithium battery cells on an assembly line, characterized in that: it includes a wiping mechanism arranged on a conveyor belt; the wiping mechanism includes a wiping block with an adjustable spacing from the conveyor belt; the bottom of the wiping block is wrapped with a wiping cloth; the top of the wiping block is provided with a V-shaped groove; the V-shaped groove is connected to a cleaning container; the bottom of the V-shaped groove is provided with a plurality of connecting holes that penetrate to the bottom of the wiping block.

[0009] Furthermore, the angle between the length direction of the wiping block and the conveying direction of the conveyor belt is α, wherein 30°≤α≤90°.

[0010] Furthermore, the wiping mechanism includes a bracket fixedly connected to the edge of the conveyor belt; a wiping block is connected under the bracket; guide shafts are fixedly connected at both ends of the wiping block; the end of the guide shaft away from the wiping block is slidably connected to a linear bearing arranged on the bracket; a spring is sleeved on the guide shaft; the spring is always in a compressed state when working; the spring is located on the guide shaft between the top of the wiping block and the bottom of the linear bearing; the outer end of the guide shaft extending out of the linear bearing is fixedly connected to a limit ring to prevent the guide shaft from detaching from the linear bearing.

[0011] Furthermore, the limit retaining ring is threadedly connected to the guide shaft; the lower bottom surface of the limit retaining ring abuts against the upper end surface of the linear bearing.

[0012] Furthermore, the bracket is in a "J" shape, spanning the conveyor belt and fixedly connected to both sides of the conveyor belt.

[0013] Furthermore, a plurality of magnets are provided on the upper end surface of the wiping block; the magnets fix the wiping cloth between the magnets and the pressing block by adsorbing the pressing block.

[0014] Furthermore, the lower bottom surface of the wiping block is an arc surface.

[0015] Furthermore, the cleaning container is arranged above the bracket; the cleaning container is connected to the V-shaped groove through a hose; and a through hole is provided on the top of the bracket to allow the hose to pass through.

[0016] Furthermore, the cleaning container includes a cleaning box for holding cleaning liquid and a container cover on the top of the cleaning box; a plurality of connectors with speed regulating valves are provided at the bottom of the cleaning box; the connectors with speed regulating valves are connected to the V-shaped groove through a hose to introduce the cleaning liquid into the V-shaped groove.

[0017] (III) Beneficial effects

[0018] The beneficial effects of the utility model are: automatic wiping and cleaning of the battery cell is realized, and the labor cost is effectively improved. The quantitative control of consumables such as dust-free cloth and cleaning liquid is realized, and the waste and uncontrollability caused by manual work are reduced. The structure is small and does not occupy the workshop space; it is flexible to use and does not need to be dismantled when not in use. You only need to lift the wiping block and fix it with a limit ring, which does not affect the on-site operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the wiping structure of the utility model;

[0022] Figure 3 It is a three-dimensional diagram of the wiping block of the utility model;

[0023] Figure 4 This is the front view of the wiping block of the utility model;

[0024] Figure 5 It is the AA cross-sectional view of the utility model;

[0025] Figure 6 This is the front view of the cleaning container of the utility model;

[0026] Figure 7 It is an exploded view of the cleaning container of the utility model;

[0027] Figure 8 It is a top view schematic diagram of the conveyor belt of the utility model;

[0028] Description of reference numerals:

[0029] 1. Wiping mechanism; 11. Bracket; 111. Through hole; 12. Wiping block; 121. Magnet; 122. Arc surface; 123. V-shaped groove; 124. Connecting hole; 13. Guide shaft; 14. Linear bearing; 15. Spring; 16. Wiping cloth; 17. Pressing block; 18. Limiting ring; 2. Cleaning container; 21. Cleaning box; 22. Container cover; 23. Connector with speed regulating valve; 24. Hose; 3. Battery cell; 4. Conveyor belt. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] For example, please refer to Figure 1 As shown:

[0034] See also Figure 1 A production line automatic wiping mechanism for a lithium battery cell surface comprises a wiping mechanism 1; the wiping mechanism 1 is fixed on a conveyor belt 4 and performs a wiping operation on a cell 3 delivered by the conveyor belt 4.

[0035] See also Figure 2, the wiping mechanism 1 includes a bracket 11, a wiping block 12, a guide shaft 13 and a linear bearing 14. The bracket 11 is a component similar to the shape of "Ji" (a Chinese character), with a higher middle part and lower sides on both sides. It straddles the conveyor belt 4 and is arranged at an angle to the conveying direction of the conveyor belt 4. The two ends are respectively fixed on both sides of the conveyor belt 4. Two linear bearings 14 are fixed in the round holes above the bracket 11. A through hole 111 allowing the rubber tube 24 to pass through is provided at the top of the bracket 11; the lower end of the guide shaft 13 is fixed to the wiping block 12, and the wiping block 12 slides up and down together with the guide shaft 13 in the linear bearing 14 under the bracket 11; the two guide shafts 13 are respectively connected to both ends of the wiping block 12; one end of the guide shaft 13 away from the wiping block 12 is slidably connected to the linear bearing 14 provided on the bracket 11; a spring 15 is sleeved on the guide shaft 13 between the wiping block 12 and the linear bearing 14. The spring 15 has a certain pre-tightening force, that is, when the spring 15 is in the working state, it is always in a compressed state; the spring 15 can make the wiping block 12 automatically return to its original position to wait for the cleaning of the next battery cell 3 after the battery cell 3 leaves. The top of the guide shaft 13 extends out of the outer end of the linear bearing 14 and is fixedly connected with a limit retaining ring 18. The limit retaining ring 18 can adjust the limit up and down according to the thickness of the battery cell 3 to determine the initial height of the wiping block 12, or adjust the pre-tightening force of the spring 15 according to the cleaning effect; in one embodiment, the limit retaining ring 18 is threadedly connected to the guide shaft 13; the lower bottom surface of the limit retaining ring 18 abuts against the upper end surface of the linear bearing 14; the limit retaining ring 18 is used to prevent the guide shaft 13 from detaching from the linear bearing 14. Cooperating with the pre-tightening force of the spring 15, the limit retaining ring 18 can be abutted against the linear bearing 14; during operation, when the wiping block 12 wipes the battery cell 3, it is lifted by a certain height by the battery cell 3, and the spring 15 is further compressed, so as to provide sufficient downward pressure to ensure the wiping effect; through the connection between the limit retaining ring 18 and the guide shaft 13, the distance between the wiping block 12 and the conveyor belt 4 can be conveniently adjusted;

[0036] A wiping cloth 16 is wrapped on the wiping block 12 for wiping the battery cell 3 conveyed by the conveyor belt 4; the wiping cloth 16 is usually a lint-free cloth.

[0037] Refer to Figure 3 , the wiping block 12 is a long strip-shaped aluminum part, and a magnet 121 is embedded in the wiping block 12. After the wiping cloth 16 is wrapped, it is sucked and pressed by a steel pressing block 17. Refer to Figure 4-5The cross section has a smooth arc surface 122 at the bottom and a V-shaped groove 123 at the top. There are several connecting holes 124 connecting the arc surface 122 and the V-shaped groove 123. The design of the arc surface 122 can guide the battery cell 3 when it is transported on the conveyor belt 4, and can effectively prevent the battery cell 3 from getting stuck in the wiping block 12 and causing the conveyor belt 4 to rub against the battery cell 3. The V-shaped groove 123 at the top is used to receive the cleaning liquid from the cleaning container 2. The V-shaped groove 123 serves as a transfer container for the cleaning liquid, allowing the cleaning liquid to more evenly penetrate slowly through the connecting holes 124 to the wiping cloth 16 below, thereby improving the utilization efficiency of the cleaning liquid.

[0038] See also Figure 1 The cleaning container 2 is placed above the wiping mechanism 1 to hold the cleaning liquid, which flows into the V-shaped groove 123 of the wiping block 12 of the wiping mechanism 1 through at least one hose 24. The hose 24 is made of corrosion-resistant and embrittlement-resistant material to ensure the purity of the cleaning liquid.

[0039] The cleaning container 2 is made of stainless steel to prevent the container from being corroded by the cleaning liquid. Figure 6-7 The cleaning container 2 has a prism shape that is wide at the top and narrow at the bottom. This shape can reduce the residual cleaning liquid, facilitate regular cleaning, and increase utilization.

[0040] See also Figure 7 The cleaning container 2 includes a cleaning box 21, a container cover 22 and a connector with a speed regulating valve 23. A container cover 22 is conveniently opened and closed above the cleaning box 21, which is convenient for cleaning the container and adding new cleaning liquid. A plurality of connectors with high-speed valves 23 are provided below the cleaning box 21, which can be used by multiple wiping mechanisms 1 by switching valves, and the flow rate of the cleaning liquid can be increased or decreased according to the cleaning effect and the utilization efficiency of the cleaning liquid.

[0041] See also Figure 8 , the angle between the length direction of the wiping block 12 and the conveying direction of the conveyor belt 4 is α, wherein 30°≤α≤90°; usually α is equal to 90°, which is convenient for the installation of the bracket 11; but when α is less than 90°, for example, α=45° or α=60°, the contact length between the wiping block 12 and the battery cell 3 is gradually increased from one corner of the battery cell 3 and finally leaves from the opposite corner, thereby forming a smoother transition process, and the movement of the battery cell 3 is smoother;

[0042] The entire working process of the conveyor belt automatic wiping lithium battery cell surface mechanism is:

[0043] First, see Figure 1, wrap the wiping cloth 16 on the wiping block 12, first remove the two steel pressing blocks 17, then you can remove the old wiping cloth 16 and replace it with a new one. First, press one end of the wiping cloth 16 on the wiping block 12 with the pressing block 17 to attract the magnet 121, and then wrap the other end around the arc surface 122 of the wiping block 12, tighten it, and then press another pressing block 17 to press the end of the wiping cloth 16. Pull open the lid 22 of the cleaning container 2, pour the cleaning liquid into the cleaning container 2, place the hose 24 in the V-groove 123 of the wiping block 12, and adjust the valve with the speed regulating valve connector 23 on the cleaning container 2 to control the flow rate of the cleaning liquid. Make sure that the cleaning liquid can wet the dust-free cloth 16. According to the thickness of the battery cell 3 and the preload of the spring 15, it is necessary to adjust the limit ring 18 to determine the initial height of the wiping block 12. The battery cell 3 is transported to the bottom of the wiping mechanism 1 by the conveyor belt 4. The thickness of the battery cell 3 causes the wiping block 12 to rise. Under the reaction force of the spring 15, the arc surface 122 of the wiping block 12 presses the battery cell 3 and wipes the surface of the battery cell 3 under the transmission of the conveyor belt 4. When the battery cell 3 leaves the wiping block 12, the wiping block 12 returns to its original height under the preload of the spring 15 and waits for the next battery cell 3 to be cleaned.

[0044] When the production line does not need to clean the surface of the battery cell 3, the wiping block 12 can be fully lifted and fixed with the limit ring 18, without occupying the space of the conveyor belt 4. And the valve with the speed regulating valve joint 23 is closed, thereby closing the dripping of the cleaning liquid.

[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A mechanism for automatically wiping the surface of lithium battery cells on an assembly line, characterized in that: It includes a wiping mechanism (1) arranged on a conveyor belt (4); the wiping mechanism (1) includes a wiping block (12) whose distance from the conveyor belt can be adjusted; a wiping cloth (16) is wrapped around the bottom of the wiping block (12); a V-shaped groove (123) is provided at the top of the wiping block (12); the V-shaped groove (123) is connected to a cleaning container (2); and a number of communication holes (124) penetrating through to the bottom of the wiping block (12) are provided at the bottom of the V-shaped groove (123).

2. The automatic wiping mechanism for the surface of lithium battery cells on an assembly line according to claim 1, characterized in that: The included angle between the length direction of the wiping block (12) and the conveying direction of the conveyor belt (4) is α, where 30° ≤ α ≤ 90°.

3. The automatic wiping mechanism for the surface of lithium battery cells on an assembly line according to claim 1, characterized in that: The wiping mechanism (1) includes a bracket (11) fixedly connected to the side of the conveyor belt (4); a wiping block (12) is connected below the bracket (11); guide shafts (13) are fixedly connected to both ends of the wiping block; the end of the guide shaft (13) far from the wiping block (12) is slidably connected to a linear bearing (14) arranged on the bracket (11); a spring (15) is sleeved on the guide shaft (13); the spring (15) is always in a compressed state during operation; the spring (15) is located on the guide shaft (13) between the top of the wiping block (12) and the bottom of the linear bearing (14); and a limit retaining ring (18) for preventing the guide shaft (13) from detaching from the linear bearing (14) is fixedly connected to the outer end of the guide shaft (13) extending out of the linear bearing (14).

4. The automatic wiping mechanism for the surface of lithium battery cells on an assembly line according to claim 3 is characterized by: The limit retaining ring (18) is threadedly connected to the guide shaft (13); the lower bottom surface of the limit retaining ring (18) abuts against the upper end surface of the linear bearing (14).

5. The automatic wiping mechanism for the surface of lithium battery cells on an assembly line according to claim 3, characterized in that: The bracket (11) is in a "ji" shape and straddles the conveyor belt (4) and is fixedly connected to both sides of the conveyor belt (4).

6. The automatic wiping mechanism for the surface of lithium battery cells on an assembly line according to claim 3, characterized in that: A number of magnets (121) are provided on the upper end surface of the wiping block (12); the wiping cloth (16) located between the magnet (121) and the pressing block (17) is fixed by the magnet (121) attracting the pressing block (17).

7. The automatic wiping mechanism for the surface of lithium battery cells on an assembly line according to claim 3, characterized in that: The lower bottom surface of the wiping block (12) is an arc surface (122).

8. The automatic wiping mechanism for the surface of lithium battery cells on an assembly line according to claim 1, characterized in that: The cleaning container (2) is arranged above the bracket (11); the cleaning container (2) is connected to the V-shaped groove (123) through a rubber tube (24); and a through hole (111) allowing the rubber tube (24) to pass through is provided at the top of the bracket (11).

9. The automatic wiping mechanism for the surface of lithium battery cells on an assembly line according to claim 1, characterized in that: The cleaning container (2) includes a cleaning box (21) for containing a cleaning liquid and a container cover (22) on the top of the cleaning box (21); a number of speed control valve connectors (23) are provided at the bottom of the cleaning box (21); and the speed control valve connector (23) is connected to the V-shaped groove (123) through a rubber tube (24) to introduce the cleaning liquid into the V-shaped groove (123).

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