Tab cutting device

Abstract

The invention relates to the technical field of battery manufacturing, and discloses a tab cutting device which comprises a lower cutter, a pressing plate used for pressing a tab on the lower cutter, a pressing plate driving mechanism used for driving the pressing plate to move, an upper cutter, a cutter driving mechanism used for driving the upper cutter to move and a wind power mechanism. The upper cutter and the lower cutter generate shearing force in the moving process to cut a tab, a plurality of upper air outlet holes extending into the upper cutter are formed in the bottom face of the upper cutter, and a plurality of lower air outlet holes extending into the lower cutter are formed in the side face, close to the upper cutter, of a cutter edge of the lower cutter; the wind power mechanism is used for communicating with the multiple upper air outlet holes and the multiple lower air outlet holes and providing wind power to blow off waste generated by cutting. According to the invention, waste materials generated during cutting can be cleaned in time, notch burrs or deformation caused by adhesion of the waste materials are avoided, and the tab cutting precision, the battery safety and the production efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing, in particular to a tab cutting device. BACKGROUND

[0002] With the continuous expansion of China's new energy vehicle market, the demand for power batteries will continue to rise. The tab is a key component in lithium batteries that connects the internal electrodes (positive and negative electrodes) to the external circuit, and its quality directly affects the conductivity, safety, and lifespan of the battery. The cutting process needs to ensure the accuracy of the tab size and the smoothness of the cut, avoiding problems such as short circuits, poor contact, or welding failures caused by burrs, deformation, or size deviations. In existing tab cutting technology, traditional mechanical cutting is prone to waste accumulation, burrs on the cutting edge, and poor tab cutting accuracy, which can also lead to quality issues in the subsequent welding of tabs and current collectors. SUMMARY

[0003] Therefore, the present application aims to provide a tab cutting device that can clean the waste generated during cutting in a timely manner, avoid burrs or deformation caused by waste adhesion, and significantly improve the accuracy of tab cutting, battery safety, and production efficiency.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: The present application provides a tab cutting device, which includes a lower cutting knife, a pressing plate for pressing the tab against the lower cutting knife, a pressing plate driving mechanism for driving the pressing plate to move, an upper cutting knife, a cutting knife driving mechanism for driving the upper cutting knife to move, and a wind power mechanism; the upper cutting knife generates a shearing force with the lower cutting knife during movement to cut the tab, the bottom surface of the upper cutting knife is provided with a plurality of upper air outlets extending into its interior, and the side surface of the cutting edge of the lower cutting knife is provided with a plurality of lower air outlets extending into its interior; the wind power mechanism is used to communicate with the plurality of upper air outlets and the plurality of lower air outlets and provide wind power to blow off the waste generated during cutting.

[0005] By setting the upper air outlets on the upper cutting knife and the lower air outlets on the lower cutting knife, and blowing air through the wind power mechanism to the upper air outlets and the lower air outlets, the present application can ensure that the waste generated during cutting falls smoothly, avoid waste adhesion on the upper cutting knife and the lower cutting knife, reduce burrs or deformation caused by waste adhesion, and significantly improve the accuracy, safety, and production efficiency of tab cutting. Meanwhile, the blowing can also have a certain heat dissipation effect.

[0006] As a further improvement of the above-mentioned scheme of the present application, the cutting edge of the upper cutting knife is a beveled cutting edge, and the inclination angle of the beveled cutting edge is 1°-3°. The beveled cutting edge can prevent waste from adhering to the upper cutting knife during cutting.

[0007] As a further improvement of the above-mentioned scheme of the present application, the lower cutter is internally provided with a lower air passage which is in communication with a plurality of lower air outlets, the lower air passage penetrates through both sides of the lower cutter, and both ends of the lower air passage are connected with lower connecting heads which are connected with the air blowing mechanism.

[0008] As a further improvement of the above-mentioned scheme of the present application, the lower cutter is internally provided with a lower air passage which is in communication with a plurality of lower air outlets, the lower air passage penetrates through both sides of the lower cutter, and both ends of the lower air passage are connected with lower connecting heads which are connected with the air blowing mechanism.

[0009] As a further improvement of the above-mentioned scheme of the present application, the lower cutter is internally provided with a lower air passage which is in communication with a plurality of lower air outlets, the lower air passage penetrates through both sides of the lower cutter, and both ends of the lower air passage are connected with lower connecting heads which are connected with the air blowing mechanism.

[0010] As a further improvement of the above-mentioned scheme of the present application, the lower cutter is internally provided with a lower air passage which is in communication with a plurality of lower air outlets, the lower air passage penetrates through both sides of the lower cutter, and both ends of the lower air passage are connected with lower connecting heads which are connected with the air blowing mechanism.

[0011] As a further improvement of the above-mentioned scheme of the present application, the lower cutter is internally provided with a lower air passage which is in communication with a plurality of lower air outlets, the lower air passage penetrates through both sides of the lower cutter, and both ends of the lower air passage are connected with lower connecting heads which are connected with the air blowing mechanism.

[0012] As a further improvement of the above-mentioned scheme of the present application, the lower cutter is internally provided with a lower air passage which is in communication with a plurality of lower air outlets, the lower air passage penetrates through both sides of the lower cutter, and both ends of the lower air passage are connected with lower connecting heads which are connected with the air blowing mechanism.

[0013] As a further improvement of the above-mentioned scheme of the present application, the lower cutter is internally provided with a lower air passage which is in communication with a plurality of lower air outlets, the lower air passage penetrates through both sides of the lower cutter, and both ends of the lower air passage are connected with lower connecting heads which are connected with the air blowing mechanism.

[0014] As a further improvement of the above-mentioned scheme of the present application, the lower cutter is internally provided with a lower air passage which is in communication with a plurality of lower air outlets, the lower air passage penetrates through both sides of the lower cutter, and both ends of the lower air passage are connected with lower connecting heads which are connected with the air blowing mechanism.

[0015] Compared with the prior art, the present application has the following beneficial effects: The present application can ensure that the waste generated by cutting falls smoothly, avoid the waste adhering to the upper cutter and the lower cutter, reduce the cutting burr or deformation caused by the waste adhesion, significantly improve the precision, safety and production efficiency of the tab cutting, and the blowing can also play a certain heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure schematic diagram of a tab cutting device is provided for the embodiment of the present application. Figure 2 A connection structure diagram of a lower cutter and a lower base in a tab cutting device is provided for the embodiment of the present application. Figure 3 A Figure 2 sectional view. Figure 4 A structure schematic diagram of a lower cutter in a tab cutting device is provided for the embodiment of the present application. Figure 5 A connection structure diagram of an upper cutter and an upper base in a tab cutting device is provided for the embodiment of the present application. Figure 6 A Figure 5 sectional view. Figure 7 A Figure 5 front view. Figure 8 A structure schematic diagram of an upper cutter in a tab cutting device is provided for the embodiment of the present application. Figure 9 A structure schematic diagram of a pressing plate driving mechanism in a tab cutting device is provided for the embodiment of the present application.

[0017] The drawings show that: 1, lower cutter; 101, lower air outlet; 102, lower air duct; 2, pressing plate; 3, upper cutter; 301, upper air outlet; 4, lower connecting head; 5, lower base; 6, lower base; 601, waste groove; 602, material guide slope; 7, material blocking plate; 8, upper base; 9, cushion block; 10, guide column; 11, connecting block; 12, upper connecting head; 13, stop block; 14, upper mounting plate; 15, side plate; 16, first air cylinder; 17, second air cylinder; 18, fixed plate; 19, first connecting plate; 20, guide shaft; 21, fixed block; 22, second connecting plate; 23, connecting seat. DETAILED DESCRIPTION

[0018] For the purpose of facilitating the understanding of the present application, a more comprehensive description of the present application will be given below in conjunction with specific embodiments. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[0020] With reference to Figure 1 , the present embodiment proposes an ear cutting device, which comprises a lower cutter 1, a pressing plate 2, a pressing plate driving mechanism, an upper cutter 3, a cutter driving mechanism, and a wind power mechanism (not shown in the figure), and can further comprise a lower base 5, a lower base 6, an upper base 8, and an upper mounting plate 14.

[0021] The upper mounting plate 14 and the lower base 5 are arranged opposite to each other, and the two sides of the upper mounting plate 14 are connected with two vertically arranged side plates 15 respectively, and the bottom of each of the two side plates 15 is connected with the lower base 5, thereby forming a mounting base of the entire cutting device.

[0022] In order to facilitate the installation of the lower cutter 1, the lower base 6 is mounted on the lower base 5 by a plurality of bolts. Figure 2 In combination Figure 3 In order to facilitate the collection of the cutting waste, a waste groove 601 is provided on the lower base 6, and a material guiding inclined surface 602 is further provided on the side of the waste groove 601 close to the lower cutter 1. An opening is also provided on the lower base 5 corresponding to the waste groove 601, so as to facilitate the collection of the waste groove 601. In order to avoid the splashing of waste, a material blocking plate 7 is mounted on the top of the lower base 6.

[0023] In combination Figure 4 A plurality of lower air outlets 101 are provided side by side on the side of the lower cutter 1 close to the cutting edge and facing the lower base 6, and the lower air outlets 101 are located above the waste groove 601. A lower air duct 102 is provided in the lower cutter 1 and communicates with the plurality of lower air outlets 101, and lower connecting heads 4 are connected at both ends of the lower air duct 102. The lower connecting heads 4 are connected with the wind power mechanism through a pipeline. During cutting, the wind power mechanism blows air to the plurality of lower air outlets 101, which can avoid the adhesion of waste on the lower cutter 1, reduce the burr or deformation of the cutting edge caused by the adhesion of waste, and can realize active cleaning, heat dissipation, and stable cutting process, thereby significantly improving the precision, safety, and production efficiency of the ear cutting. In the present embodiment, the wind power mechanism can adopt a fan.

[0024] In this embodiment, the lower cutter 1 is arranged in a symmetrical structure, that is, the lower end of the lower cutter 1 is also provided with a cutting edge. When the upper cutting edge is worn, the lower cutter 1 can be adjusted so that the unworn cutting edge faces upward, thereby quickly restoring production.

[0025] The upper cutter 3 is provided with a cutting edge at the bottom, and a cutter driving mechanism is used to drive the upper cutter 3 to move. During the movement of the upper cutter 3, a shearing force can be generated with the lower cutter 1, so that the tab can be cut. The cutter driving mechanism includes a first cylinder 16 mounted on the upper mounting plate 14. Figure 5 The top of the upper base 8 is provided with a connecting seat 23 connected with the output end of the first cylinder 16. Two vertical guide columns 10 are connected to the lower base 6, and the top of each guide column 10 is slidably penetrated through the upper base 8. Figure 6 A mounting groove adapted to the upper cutter 3 is formed in the upper base 8, and a pad 9 is arranged at the bottom of the mounting groove. The upper cutter 3 is embedded in the mounting groove through a plurality of bolts. The first cylinder 16 can be extended or retracted to drive the upper base 8 to move up and down along the guide column 10, thereby driving the upper cutter 3 to move up and down. After a long time of use, the upper cutter 3 will be worn and need to be repaired. The repair will cause the thickness of the upper cutter 3 to be reduced. By increasing the thickness of the pad 9, the thickness of the upper cutter 3 can be compensated to ensure that the position of the upper cutter 3 is consistent with that before repair, thereby ensuring the shearing force and reducing the adjustment time without the need to adjust the gap between the upper cutter 3 and the lower cutter 1.

[0026] In combination Figure 7 In this embodiment, the cutting edge of the upper cutter 3 is an inclined cutting edge, and the inclination angle of the inclined cutting edge is 1°-3°. Figure 8 A plurality of upper air outlets 301 are formed in the upper cutter 3 and penetrate through the upper and lower end faces of the upper cutter 3. A connecting block 11 is mounted on the top of the upper cutter 3 through bolts. An upper air channel is arranged in the connecting block 11 and communicates with the plurality of upper air outlets 301. An upper connecting head 12 communicating with the upper air channel is connected to the top of the connecting block 11. The upper connecting head 12 is connected to the wind power mechanism through a pipeline. During cutting, the wind power mechanism blows air to the plurality of upper air outlets 301, and in combination with the inclined cutting edge, the upper cutter 3 can be prevented from continuously adhering to the waste material during cutting of the tab, thereby ensuring that the tab waste material can fall off smoothly after cutting.

[0027] In order to accurately position the upper cutter 3 during installation, a stop block 13 is arranged on the upper base 8 at the top of the mounting groove to position the connecting block 11. When the upper cutter 3 is placed in the mounting groove, the connecting block 11 abuts against the stop block 13, which can accurately position the position of the upper cutter 3 to avoid cutting deviation.

[0028] The pressing plate 2 is used to press the tab against the lower cutter 1, so as to fix the battery tab in the cutting position, prevent the tab from being misaligned during cutting, and ensure the cutting accuracy. The pressing plate driving mechanism is used to drive the pressing plate 2 to move, and the pressing plate 2 is combined with the upper cutter 3 to form a shearing mechanism. Figure 9 The pressing plate driving mechanism comprises a second cylinder 17, a fixed plate 18, a first connecting plate 19, two guide shafts 20, a fixed block 21 and a second connecting plate 22. The fixed plate 18 is fixed on the upper mounting plate 14, the second cylinder 17 is installed on the fixed plate 18 and the output end of the second cylinder 17 is connected with the first connecting plate 19, the top ends of the two guide shafts 20 are connected with the first connecting plate 19 and the bottom ends of the two guide shafts 20 are connected with the second connecting plate 22 after sliding through the fixed block 21, the fixed block 21 is fixed on the upper base 8, and the pressing plate 2 is fixed on the bottom of the second connecting plate 22. In the embodiment, the second cylinder 17 is a double-shaft cylinder.

[0029] The tab cutting device can be installed on the tab cutting station of the battery production line through the lower base 5. When the battery is conveyed to the cutting station by the conveying device, the battery is aligned on the cutting station, then the second cylinder 17 is started to drive the pressing plate 2 to descend and press the tab, so as to fix the battery tab in the cutting position. Then the first cylinder 16 is started to drive the upper base 8 to descend, so as to drive the upper cutter 3 to descend and generate shearing force with the lower cutter 1 to cut the tab. At the same time, the air blowing mechanism blows air through the upper air outlet hole 301 and the lower air outlet hole 101, so as to blow the cut waste into the waste groove 601. The cut battery is moved to the next process.

[0030] It should be noted that when an element is referred to as being "mounted on" another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "fixed on" another element, it can be directly fixed on the other element or there can be intervening elements.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] Any combination of the above-described embodiments of the technical features can be combined, and in order to make the description simple, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0033] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A tab cutting device, characterized by, It includes lower cutter (1), pressing plate (2) for pressing tab on lower cutter (1), pressing plate driving mechanism for driving pressing plate (2) to move, upper cutter (3), cutter driving mechanism for driving upper cutter (3) to move and wind power mechanism;Upper cutter (3) generates shearing force with lower cutter (1) during movement and cuts tab, the bottom surface of upper cutter (3) is provided with a plurality of upper air holes (301) extending to its interior, the side of the cutting edge of lower cutter (1) close to upper cutter (3) is provided with a plurality of lower air holes (101) extending to its interior;The wind power mechanism is used for communicating with a plurality of upper air holes (301), a plurality of lower air holes (101) and providing wind power to blow off the waste generated by cutting.

2. The tab cutting apparatus according to claim 1, characterized by The cutting edge of upper cutter (3) is inclined cutting edge, and the inclination angle of the inclined cutting edge is 1°-3°.

3. The tab cutting apparatus according to claim 1, wherein Lower cutter (1) is provided with lower air duct (102) in the inside and lower air duct (102) is communicated with a plurality of lower air holes (101), lower air duct (102) penetrates through both sides of lower cutter (1) and lower air duct (102) is connected with lower connecting head (4) at both ends, lower connecting head (4) is connected with the wind power mechanism.

4. The tab cutting apparatus according to claim 1, wherein The tab cutting device further comprises lower base (5) and lower base (6), lower cutter (1) is installed on lower base (6) and lower base (6) is installed on lower base (5), lower base (6) is provided with waste groove (601) for collecting waste generated by cutting and located below lower air hole (101), waste groove (601) is provided with guide slope (602) close to one side of lower cutter (1).

5. The tab cutting apparatus according to claim 4, wherein Lower base (6) is provided with material baffle (7) on the top to prevent waste from splashing.

6. The tab trimming apparatus of claim 1, wherein Lower cutter (1) is upper and lower symmetrical structure.

7. The tab trimming apparatus according to claim 4, wherein The tab cutting device further comprises upper base (8), upper base (8) is provided with mounting groove matched with upper cutter (3) on the top and mounting groove is provided with cushion block (9) at the bottom, and upper cutter (3) is embedded in the mounting groove;Lower base (6) is connected with two vertically arranged guide columns (10), and the two guide columns (10) are both slidingly penetrating through upper base (8).

8. The tab trimming apparatus according to claim 7, wherein Upper air hole (301) extends to the top surface of upper cutter (3), upper cutter (3) is connected with connecting block (11) on the top and connecting block (11) is provided with upper air duct communicated with a plurality of upper air holes (301) in the inside, upper connecting head (12) is provided on connecting block (11) and communicated with upper air duct and upper connecting head (12) is connected with wind power mechanism;The mounting groove is vertically through structure, and the upper base (8) is provided with stop block (13) for positioning connecting block (11) on the top of the mounting groove.

9. The tab trimming apparatus of claim 7, wherein, The tab cutting device further comprises upper mounting plate (14), upper mounting plate (14) is located above lower base (5) and upper mounting plate (14) is connected with lower base (5) through two side plates (15);The cutter driving mechanism comprises first air cylinder (16), first air cylinder (16) is installed on upper mounting plate (14) and its output end is connected with upper base (8).

10. The tab trimming apparatus of claim 9, wherein, The pressing plate driving mechanism comprises a second cylinder (17), a fixed plate (18), a first connecting plate (19), two guide shafts (20), a fixed block (21) and a second connecting plate (22), the fixed plate (18) is fixed on the upper mounting plate (14), the second cylinder (17) is installed on the fixed plate (18) and the output end thereof is connected with the first connecting plate (19), the top ends of the two guide shafts (20) are connected with the first connecting plate (19) and the bottom ends thereof are slid through the fixed block (21) and then connected with the second connecting plate (22), the fixed block (21) is fixed on the upper base (8), and the pressing plate (2) is fixed on the bottom of the second connecting plate (22).

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