Excess material collecting device and pole piece splitting machine

Abstract

The utility model relates to the technical field of battery production, and provides an excess material collecting device and a pole piece splitting machine. The excess material collecting device comprises a collecting assembly and an air knife assembly, the collecting assembly is provided with a containing cavity used for containing excess materials, the top face of the collecting assembly is provided with a feeding port communicated with the containing cavity, the feeding port is used for allowing the excess materials to enter the containing cavity, the air knife assembly is used for blowing the excess materials, and the air outlet end of the air knife assembly is located in the containing cavity. Compared with the mode of collecting the excess materials through a motor, the excess material collecting device collects the excess materials through airflow, a motor winding structure is omitted, the production cost can be reduced, a specially-assigned person is not needed for connecting the belt, the probability that the excess materials break the belt is greatly reduced, and labor force can be reduced. In addition, the excess material collecting device enables workers to clean the excess materials more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a waste material collection device and a pole piece slitter. Background Art

[0002] Both lithium batteries and sodium batteries need to compact the pole pieces. The pole pieces are formed by coating a compound slurry on a substrate such as aluminum or copper foil. The rolling of the pole pieces is to compact the electrical slurry particles on the pole pieces, and its purpose is to increase the compaction density of the battery pole pieces. A suitable compaction density can increase the discharge capacity of the battery, reduce the internal resistance, and extend the cycle life of the battery. During rolling, the upper and lower rollers do not contact the foil material. Due to the action of pressure, the pole pieces will be extended, and the unloaded foil material will curl, affecting winding or directly breaking the belt, resulting in great economic losses. Therefore, a cutting knife is installed at the unwind buffer mechanism during production to cut the excess pole pieces at the edge. In the related art, the edge waste material after being processed by the cutting knife will be wound into a roll by a motor. However, this rolled waste material is prone to breakage, resulting in frequent cleaning of the waste material by the staff, consuming a lot of labor. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a waste material collection device and a pole piece slitter, aiming to solve the technical problem that the waste material collection method in the related art consumes a lot of labor.

[0004] In a first aspect, the present application provides a waste material collection device, including a collection component and an air knife component. The collection component is provided with a receiving cavity for accommodating waste material. The top surface of the collection component is provided with a feed port communicating with the receiving cavity, and the feed port is used for allowing waste material to enter the receiving cavity. The air knife component is used for blowing the waste material, and the air outlet end of the air knife component is located in the receiving cavity.

[0005] Optionally, both the feed port and the air knife component are located at the same end of the receiving cavity.

[0006] Optionally, both the feed port and the air knife component are provided with two, and the two feed ports and the two air knife components correspond to each other one by one.

[0007] Optionally, the feed port is in a flared shape, and the cross-sectional area of the upper end of the feed port gradually decreases from top to bottom.

[0008] Optionally, the lower end of the feed port is provided with a chamfer.

[0009] Optionally, the collection component includes a collection box and at least one feed plate. The collection box is provided with a receiving cavity, and the upper end of the receiving cavity is open to form an opening. The feed plate is detachably connected to the top surface of the collection box and covers the opening. The feed port is opened on the feed plate and penetrates through the upper and lower surfaces of the feed plate in the vertical direction, so that the feed port communicates with the opening.

[0010] Optionally, only one feed inlet is provided on each feed plate.

[0011] Optionally, the collection assembly has an installation cavity, which is separated from the accommodation cavity by a partition. The air knife assembly is installed in the installation cavity, and the air outlet end of the air knife assembly penetrates through the partition and extends into the accommodation cavity.

[0012] Optionally, casters are provided on the bottom surface of the collection assembly.

[0013] The beneficial effects of the waste material collection device provided by the present utility model are as follows: Compared with the method of using a motor to collect waste material, this waste material collection device uses air flow to collect waste material, saving the motor winding structure, reducing production costs, eliminating the need for a dedicated person to connect the belt, and greatly reducing the probability of waste material breakage, thus reducing labor. In addition, this waste material collection device also enables the staff to clean the waste material more easily.

[0014] The waste material accumulates in the accommodation cavity of the collection assembly through the feed inlet. The air outlet end of the air knife assembly is arranged in the accommodation cavity so that the air knife assembly can blow the waste material to one end of the accommodation cavity. When the waste material accumulates to a certain extent at one end of the accommodation cavity, it will move towards the direction of the air knife assembly, that is, the waste material first accumulates at the end of the accommodation cavity far from the air knife assembly and then at the end of the accommodation cavity close to the air knife assembly. In this way, the space utilization rate of the accommodation cavity can be improved, enabling the collection box to collect more waste material at one time and further reducing labor.

[0015] In a second aspect, the present application provides a pole piece slitter, which includes a cutting device and the above-mentioned waste material collection device. The cutting device includes an upper cutting knife, a lower cutting knife and a knife shaft. The upper cutting knife is fixedly connected to the knife shaft. The upper cutting knife and the lower cutting knife jointly cut the pole piece to form waste material, and the waste material enters the accommodation cavity through the feed inlet.

[0016] The beneficial effects of the pole piece slitter provided by the present utility model are as follows: Due to the adoption of the above-mentioned waste material collection device, the use of labor can be reduced in this pole piece slitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the pole piece slitter provided by the embodiment of the present utility model;

[0019] Figure 2Another structural schematic diagram of the pole piece slitter provided by the embodiment of the present utility model;

[0020] Figure 3 A sectional view of the collection assembly provided by the embodiment of the present utility model.

[0021] Among them, each reference numeral in the figure:

[0022] 100, waste material collection device; 10, collection assembly; 20, air knife assembly;

[0023] 11, collection box; 12, feeding plate; 111, accommodation cavity;

[0024] 112, opening; 113, installation cavity; 114, partition board;

[0025] 115, casters; 121, feeding port; 1211, rounded corner;

[0026] 21, air outlet end; 200, waste material; 300, pole piece slitter;

[0027] 310, upper cutting knife; 320, knife shaft; 330, lower cutting knife. Detailed implementation manners

[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0029] Referring to "one embodiment" or "embodiments" throughout the specification means that the specific features, structures or characteristics described in connection with the embodiments are included in at least one embodiment of the present application. Therefore, the phrases "in one embodiment" or "in some embodiments" appearing throughout the specification do not all refer to the same embodiment. In addition, in one or more embodiments, the specific features, structures or characteristics can be combined in any suitable manner.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0031] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0032] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Please refer to Figures 1 to 3 , and the waste material collection device 100 and the pole piece slitter 300 in the embodiments of the present utility model will be described below.

[0034] Please refer to Figure 1 and Figure 2 , the waste material collection device 100 provided in the present application includes a collection component 10 and an air knife component 20. The collection component 10 is provided with a receiving cavity 111 for receiving waste material 200. The top surface of the collection component 10 is provided with a feed port 121 communicating with the receiving cavity 111. The feed port 121 is used for the waste material 200 to enter the receiving cavity 111. The air knife component 20 is used to blow the waste material 200, and the air outlet end 21 of the air knife component 20 is located inside the receiving cavity 111.

[0035] Compared with the method of using a motor to collect the waste material 200, the waste material collection device 100 of the present invention uses air flow to collect the waste material 200, saving the motor winding structure, reducing production costs, eliminating the need for a dedicated person to connect the tape, and greatly reducing the probability of the waste material 200 breaking the tape, thus reducing labor. In addition, the waste material collection device 100 of the present invention can also make it easier for the staff to clean the waste material 200.

[0036] The waste material 200 accumulates in the receiving cavity 111 of the collection component 10 through the feed port 121 of the collection component 10. The air outlet end 21 of the air knife component 20 is arranged inside the receiving cavity 111 so that the air knife component 20 can blow the waste material 200 to one end of the receiving cavity 111. When the waste material 200 accumulates to a certain extent at one end of the receiving cavity 111, it will move towards the air knife component 20, that is, the waste material 200 first accumulates at the end of the receiving cavity 111 far from the air knife component 20, and then accumulates at the end of the receiving cavity 111 close to the air knife component 20. In this way, the space utilization rate of the receiving cavity 111 can be improved, enabling the collection box 11 to collect more waste material 200 at one time and further reducing labor.

[0037] In some embodiments, please refer to Figure 1 , the feed inlet 121 and the air knife assembly 20 are both located at the same end of the accommodation cavity 111. Exemplarily, in this embodiment, the feed inlet 121 and the air knife assembly 20 are both located at the right end of the accommodation cavity 111. With such an arrangement, the space of the accommodation cavity 111 can be utilized to the maximum extent, and the use of labor can be further reduced.

[0038] In some embodiments, please refer to Figure 1 and Figure 2 , there are two feed inlets 121 and two air knife assemblies 20, and the two feed inlets 121 and the two air knife assemblies 20 correspond to each other one by one. Generally, both edges of the pole piece need to be cut. By providing two feed inlets 121 and two air knife assemblies 20 on the same collection assembly 10, the collection assembly 10 can collect two waste strip 200, without using two collection assemblies 10 to separately collect two waste strip 200, greatly improving the practicability.

[0039] In some embodiments, please refer to Figure 3 , the feed inlet 121 is in a flared shape, and from top to bottom, the cross-sectional area of the upper end of the feed inlet 121 gradually decreases. Specifically, from top to bottom, both the length and the width of the feed inlet 121 gradually decrease. Among them, the length direction of the feed inlet 121 is parallel to the front-rear direction, and the width direction of the feed inlet 121 is parallel to the left-right direction. With such an arrangement, it is convenient for the staff to insert the waste 200 into the accommodation cavity 111.

[0040] Of course, in some other embodiments, from top to bottom, it can be that only the length of the feed inlet 121 gradually decreases, or only the width of the feed inlet 121 gradually decreases, which is not limited herein.

[0041] In some embodiments, please refer to Figure 3 , a rounded corner 1211 is provided at the lower end of the feed inlet 121. With such an arrangement, the risk of the waste strip 200 breaking can be further reduced, thereby reducing the use of labor.

[0042] In some embodiments, please refer to Figure 3, the collecting assembly 10 includes a collecting box 11 and at least one feeding plate 12. The collecting box 11 is provided with a receiving cavity 111, the upper end of the receiving cavity 111 is open to form an opening 112. The feeding plate 12 is detachably connected to the top surface of the collecting box 11 and covers the opening 112. A feeding port 121 is formed in the feeding plate 12 and penetrates through the upper and lower surfaces of the feeding plate 12 in the vertical direction, so that the feeding port 121 communicates with the opening 112. Specifically, the surplus material 200 sequentially enters the receiving cavity 111 through the feeding port 121 and the opening 112. A through hole is formed in the feeding plate 12, and the through hole penetrates through the upper and lower surfaces of the feeding plate 12 in the vertical direction. A threaded hole is formed in the top surface of the collecting box 11, and the threaded hole is arranged adjacent to the opening 112. By using a bolt to pass through the through hole in the feeding plate 12 and threadedly connect with the threaded hole in the collecting box 11, the detachable connection between the feeding plate 12 and the collecting box 11 can be realized. By detachably connecting the feeding plate 12 to the collecting box 11, when the thickness of the surplus material 200 changes, the feeding plate 12 can be replaced separately to adapt to the surplus material 200 of different thicknesses, without directly replacing the entire surplus material collecting device 100, which greatly improves the flexibility.

[0043] In some embodiments, only one feeding port 121 is provided on each feeding plate 12. With such a setting, when there are two openings 112 on the collecting box 11 for two surplus material belts 200 to pass through, two independent feeding plates 12 can be respectively installed on the collecting box 11. Compared with the embodiment of providing two feeding ports 121 on one feeding plate 12, the former can reduce the material consumption and is beneficial to reducing the production cost.

[0044] In some embodiments, please refer to Figure 1 , the collecting assembly 10 has an installation cavity 113, and the installation cavity 113 is separated from the receiving cavity 111 by a partition plate 114. The air knife assembly 20 is installed in the installation cavity 113, and the air outlet end 21 of the air knife assembly 20 penetrates through the partition plate 114 and extends into the receiving cavity 111. Specifically, the installation cavity 113 is arranged in the collecting box 11, and the partition plate 114 is arranged in the collecting box 11. The installation cavity 113 can be used to protect the air knife assembly 20 so that the air knife assembly 20 is not affected by the outside. In addition, the setting of the installation cavity 113 can prevent the surplus material 200 from winding on the air knife assembly 20, which is convenient for the staff to clean the surplus material 200 in the collecting box 11.

[0045] In some embodiments, please refer to Figure 1 and Figure 2 , casters 115 are provided on the bottom surface of the collecting assembly 10. Specifically, the casters 115 are installed on the bottom surface of the collecting box 11. The setting of the casters 115 can facilitate the staff to move the surplus material collecting device 100.

[0046] Please refer to Figure 1 and Figure 2, the present application further provides a pole piece cutting machine 300, which includes a cutting device and the above-mentioned waste material collecting device 100. The cutting device includes an upper cutting knife 310, a lower cutting knife 330 and a knife shaft 320. The upper cutting knife 310 is fixedly connected to the knife shaft 320. The upper cutting knife 310 and the lower cutting knife 330 jointly cut the pole piece to form waste material 200, and the waste material 200 enters the accommodating cavity 111 through the feed port 121. Specifically, the knife shaft 320 can be driven by a driving motor, so as to drive the upper cutting knife 310 to rotate. Similarly, the lower cutting knife 330 can also be rotated by a driving motor. Due to the adoption of the above-mentioned waste material collecting device 100, the pole piece cutting machine 300 can reduce the use of labor force.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A residual material collection device, characterized in that: include: A collecting component (10) is provided with a receiving cavity (111) for receiving residual material (200); a top surface of the collecting component (10) is provided with a feed port (121) connected to the receiving cavity (111); the feed port (121) is used for allowing the residual material (200) to enter the receiving cavity (111); The wind knife assembly (20) is used for blowing the residual material (200), and the air outlet end (21) of the wind knife assembly (20) is located in the accommodating cavity (111).

2. The residual material collecting device according to claim 1, characterized in that: The feed port (121) and the wind knife assembly (20) are both located at the same end of the accommodating cavity (111).

3. The residual material collecting device according to claim 1, characterized in that: Two of the feed ports (121) and two of the air knife assemblies (20) are provided, and the two feed ports (121) and the two air knife assemblies (20) correspond to each other one by one.

4. The residual material collecting device according to claim 1, characterized in that: The feed opening (121) is in a trumpet shape, and the cross-sectional area of ​​the upper end of the feed opening (121) gradually decreases from top to bottom.

5. The residual material collecting device according to claim 1, characterized in that: The lower end of the feed port (121) is provided with a rounded corner (1211).

6. The residual material collecting device according to claim 1, characterized in that: The collecting assembly (10) comprises: A collecting box (11) is provided with the accommodating cavity (111), wherein the upper end of the accommodating cavity (111) is open to form an opening (112); At least one feed plate (12) is detachably connected to the top surface of the collection box (11) and covers the opening (112); the feed port (121) is opened on the feed plate (12) and penetrates the upper and lower surfaces of the feed plate (12) in the up and down directions so that the feed port (121) is connected to the opening (112).

7. The residual material collecting device according to claim 6, characterized in that: Each of the feed plates (12) is provided with only one feed port (121).

8. The residual material collecting device according to claim 1, characterized in that: The collecting component (10) has an installation cavity (113), and the installation cavity (113) is separated from the accommodating cavity (111) by a partition (114). The wind knife component (20) is installed in the installation cavity (113), and the air outlet end (21) of the wind knife component (20) passes through the partition (114) and extends into the accommodating cavity (111).

9. The residual material collecting device according to claim 1, characterized in that: The bottom surface of the collecting assembly (10) is provided with casters (115).

10. A pole piece cutting machine, characterized in that: The invention comprises a cutting device and a residual material collecting device (100) as claimed in any one of claims 1 to 9, wherein the cutting device comprises an upper cutter (310), a lower cutter (330) and a cutter shaft (320), wherein the upper cutter (310) is fixedly connected to the cutter shaft (320), and the upper cutter (310) and the lower cutter (330) jointly cut the pole piece and form residual material (200), and the residual material (200) enters the accommodating cavity (111) through the feed port (121).

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