Material belt cutting device

Abstract

The utility model discloses a material belt cutting device, which is used for cutting a material belt into pole pieces, and comprises a machine table for supporting the material belt; the driving roller mechanism is mounted on the machine table, is used for conveying a material belt and comprises two pairs of driving roller assemblies which are arranged at intervals; the cutting mechanism is arranged between the two pairs of driving roller assemblies and is used for cutting the material belt into pole pieces one by one; the cutting driving mechanism is installed on the machine table and used for installing the cutting mechanism so that the cutting mechanism can be driven to move in the moving direction of the material belt, and therefore the material belt in the moving state can be cut. According to the material belt cutting device, the cutting mechanism can be driven by the cutting driving mechanism to move so as to keep static relative to the material belt to cut the material belt, so that the material belt does not need to be in a static state, the cutting efficiency is guaranteed, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of pole piece production, and in particular to a strip cutting device. Background Art

[0002] During the lamination production process, the material strip needs to be cut into thin-film electrodes one by one. In existing cutting methods, to ensure the accuracy of the cut and keep the burrs on the electrode within a certain precision range, the material strip needs to be gradually decelerated during transportation until it stops with the cutter before cutting can begin. However, this deceleration method reduces the production efficiency of the equipment. Utility Model Content

[0003] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the present application, a material strip cutting device is provided for cutting the material strip into pole pieces, comprising: a machine table for supporting the material strip; a driving roller mechanism installed on the machine table for conveying the material strip, comprising two pairs of separated driving roller assemblies; a cutting mechanism arranged between the two pairs of driving roller assemblies for cutting the material strip into pole pieces one by one; a cutting drive mechanism installed on the machine table and used to install the cutting mechanism so as to drive the cutting mechanism to move along the movement direction of the material strip, thereby realizing cutting of the material strip in a moving state.

[0004] In some embodiments, the cutting mechanism includes a first driving member, a driving wheel, a plurality of driven wheels, a conveyor belt and a cutting blade; the cutting blade is installed on the conveyor belt; the driving wheel is connected to the first driving member, and the plurality of driven wheels are separated and arranged on the cutting driving mechanism, and the conveyor belt is wound around the driving wheel and the plurality of driven wheels. Under the drive of the first driving member, the cutting blade can move from one side of the material belt to the other side along the width direction of the material belt to achieve cutting of the material belt.

[0005] In some embodiments, the machine has a support plate for supporting the material belt, the conveyor belt is wound around the support plate, and the first driving member and the driving wheel are arranged below the support plate.

[0006] In some embodiments, the cutting mechanism further includes a pair of tensioning wheels, which are symmetrically arranged on both sides of the driving wheel to tension the conveyor belt.

[0007] In some embodiments, the cutting mechanism includes a plurality of cutting blades, and the plurality of cutting blades are arranged at equal intervals on the conveyor belt.

[0008] In some embodiments, a cutting groove is provided on the support plate, and when the cutting blade cuts the material strip, the cutting blade extends into the cutting groove and adheres to the groove wall of the cutting groove.

[0009] In some embodiments, a first negative pressure suction port is provided on the side wall of the cutting groove.

[0010] In some embodiments, the cutting drive mechanism includes a linear motor and a mounting bracket provided on the linear motor, and the mounting bracket is used to install the cutting mechanism so that the cutting mechanism can be driven by the linear motor to move along a movement direction parallel to the material strip.

[0011] In some embodiments, the material strip cutting device further includes a linear guide rail and a slider that are slidably arranged with respect to each other, the linear guide rail is mounted on the machine platform and extends in the direction of movement of the material strip, and the slider is mounted on the cutting mechanism.

[0012] In some embodiments, each pair of the drive roller assemblies includes an upper roller, an upper drive motor, a lower roller, and a lower cylinder. The upper roller and the lower roller are arranged opposite to each other. The upper drive motor is used to drive the upper roller to rotate, and the lower cylinder is used to drive the lower roller to move closer to or away from the upper roller.

[0013] In summary, the strip cutting device provided by this application has the following technical effects:

[0014] The material strip is supported by the machine and driven to move by the driving roller mechanism. When the material strip moves to the right position, it is decelerated so that it can be cut into pole pieces by the cutting mechanism. Or when the material strip is not decelerated, the cutting mechanism can move under the drive of the cutting drive mechanism to keep it relatively still and cut the material strip. Therefore, the material strip does not need to be in a static state to ensure cutting efficiency and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a strip cutting device according to an embodiment of the present application;

[0016] Figure 2 for Figure 1 A top view of the strip cutting device in FIG.

[0017] Figure 3 for Figure 2 Schematic diagram of the cross section along the AA direction;

[0018] Figure 4 for Figure 1 Structural diagram of the cutting mechanism and cutting drive mechanism;

[0019] Figure 5 for Figure 1A schematic structural diagram of the driving roller mechanism in FIG.

[0020] Figure 6 This is a schematic structural diagram of a cutting groove according to an embodiment of the present application;

[0021] Figure 7 This is a schematic structural diagram of a cutting groove according to another embodiment of the present application.

[0022] Figures: 100-material strip cutting device, 10-machine table, 11-support plate, 111-cutting groove, 112-first negative pressure suction port, 113-second negative pressure suction port, 12-bottom plate, 13-vertical plate, 20-cutting mechanism, 21-first driving member, 22-driving wheel, 23-driven wheel, 24-conveyor belt, 25-cutting blade, 26-tensioning wheel, 30-driving roller mechanism, 31-driving roller assembly, 311-upper roller, 312-upper driving motor, 313-lower roller, 314-lower cylinder, a-front driving roller assembly, b-rear driving roller assembly, 40-cutting driving mechanism, 41-linear motor, 411-linear stator, 412-linear mover, 42-mounting frame, 50-linear guide rail, 60-slider, 200-material strip, 300-pole piece. DETAILED DESCRIPTION

[0023] For better understanding and implementation, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0024] In the description of this application, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 operated in a specific orientation. Therefore, they cannot be understood as limiting this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0026] The present application will be further described in detail below with reference to the accompanying drawings.

[0027] See also Figures 1 to 7 , a material strip cutting device 100 provided in an embodiment of the present application, is used to cut a material strip 200 into pole pieces 300 , and includes a machine 10 , a cutting mechanism 20 , a driving roller mechanism 30 and a cutting driving mechanism 40 .

[0028] Among them, see Figure 1 and Figure 2 The machine 10 is used to support the material strip 200; the driving roller mechanism 30 is installed on the machine 10, and is used to convey the material strip 200, including two pairs of driving roller assemblies 31 separated from each other; the cutting mechanism 20 is arranged between the two pairs of driving roller assemblies 31, and is used to cut the material strip 200 into pole pieces 300 one by one; the cutting drive mechanism 40 is installed on the machine 10, and is used to install the cutting mechanism 20; wherein, the cutting mechanism 20 can cut the material strip 200 in a stationary state without being driven by the cutting drive mechanism 40, or can move along the movement direction of the material strip 200 under the drive of the cutting drive mechanism 40, thereby realizing cutting of the material strip 200 in a moving state.

[0029] The above-mentioned material strip cutting device 100 supports the material strip 200 through the machine table 10 and drives the material strip 200 to move through the driving roller mechanism 30. It can cut the static or dynamic material strip 200. When the material strip 200 moves to the position, it is decelerated to 0 so that it can be cut into the pole piece 300 by the cutting mechanism 20, or when the material strip 200 is not decelerated, the cutting mechanism 20 can move under the drive of the cutting drive mechanism 40 to keep it relatively still with the material strip 200 and cut the material strip 200, so that the material strip 200 does not need to be in a static state to ensure cutting efficiency and improve production efficiency.

[0030] See also Figure 1 and Figure 3 , is a structural schematic diagram of the machine 10 of this embodiment, including a base plate 12, two vertical plates 13 arranged at opposite ends of the base plate 12, and a support plate 11 arranged on the top of the two vertical plates 13, so that the base plate 12, the two vertical plates 13 and one support plate 11 enclose an installation space.

[0031] See also Figure 3 and Figure 4In one embodiment of the present application, the cutting mechanism 20 includes a first driving member 21, a driving wheel 22, a plurality of driven wheels 23, a conveyor belt 24 and a cutting blade 25; the cutting blade 25 is installed on the conveyor belt 24; the driving wheel 22 is connected to the first driving member 21, and the plurality of driven wheels 23 are separated and arranged on the cutting drive mechanism 40, and the conveyor belt 24 is wound around the driving wheel 22 and the plurality of driven wheels 23. Under the drive of the first driving member 21, the cutting blade 25 can move from one side of the material belt 200 to the other side along the width direction of the material belt 200 to achieve cutting of the material belt 200. In this way, since the cutting blade 25 is constantly moving under the drive of the conveyor belt 24 when cutting the material belt 200, it can cut the material belt 200 from one side of the material belt 200 to the other side, so that a cutting blade 25 with a smaller width can be set to avoid the cutting blade 25 occupying a larger space. Since the span width of the blade is smaller, the maintenance cost can be reduced when replacing the cutting blade 25 after wear due to the smaller width of the blade.

[0032] Specifically, the driving wheel and conveyor belt of this embodiment are in the form of a sprocket and a chain, so that during later maintenance, lubricating oil can be added, which is convenient for maintenance.

[0033] Furthermore, in order to reduce the volume occupied by the entire material strip cutting device 100 and make the configuration of the entire device compact, the machine 10 has a support plate 11 for supporting the material strip 200, the conveyor belt 24 is wound around the outside of the support plate 11, and the first drive member 21 and the driving wheel 22 are arranged below the support plate 11. In this way, the conveyor belt 24 is wound around the outside of the support plate 11, and the first drive member 21 and the driving wheel 22 are arranged below the support plate 11, so that the components of the entire device can be arranged compactly, reducing the volume occupied by the entire device. In other embodiments, the driving wheel 22 and the driven wheel 23 can be arranged along the width direction of the material strip 200, the conveyor belt 24 is arranged above the support plate 11, and the first drive member 21 is arranged on one side of the support plate 11, which can also achieve the effect of circulating the conveyor belt 24, that is, it can also drive the cutting blade 25 to cut the material strip 200.

[0034] It can be understood that since the conveyor belt 24 has a certain extension length, in order to ensure the stability when driving the cutting blade 25 to cut the material belt 200, the cutting mechanism 20 also includes a pair of tensioning wheels 26. The pair of tensioning wheels 26 are symmetrically arranged on both sides of the driving wheel 22 to tension the conveyor belt 24. Therefore, through the setting of the two tensioning wheels 26, the conveyor belt 24 can be tensioned. When driving the cutting blade 25 to cut the material belt 200, the cutting force exerted by the cutting blade 25 on the material belt 200 is stable to reduce the generation of burrs.

[0035] Among them, this embodiment includes 4 driven wheels 23, two driven wheels 23 are set on each side of the width direction of the support plate 11, and one driven wheel 23 is set above the support plate 11, and one driven wheel 23 is set below the support plate 11, so that the conveyor belt 24 can be tensioned and the conveyor belt 24 drives the cutting blade 25 to pass along the top of the support platform.

[0036] Furthermore, since the cutting drive mechanism 40 can drive the cutting mechanism 20 to move along the length direction of the material strip 200 to cut the material strip 200, in order to ensure the continuity of cutting, the cutting mechanism 20 includes multiple cutting blades 25, and the multiple cutting blades 25 are arranged at equal intervals on the conveyor belt 24. In this way, after driving one cutting blade 25 to cut the pole piece 300 from the material strip 200, the driving roller assembly 31 of the material strip 200 continues to move in the direction of the other driving roller assembly 31. At the same time, the conveyor belt 24 drives another cutting blade 25 to the side of the material strip 200. In this way, the material strip 200 can be cut cyclically, thereby ensuring the continuity of cutting and improving production efficiency.

[0037] See also Figure 4 In one embodiment of the present application, in order to facilitate the collection of debris generated during cutting, the cutting blade 25 extends into the ring of the annular conveyor belt 24, and a cutting groove 111 is provided on the support plate 11. When the cutting blade 25 cuts the material strip 200, it extends into the cutting groove 111. In this way, after the cutting blade 25 cuts the material strip 200, the cutting debris generated enters the cutting groove 111 and is collected by the cutting groove 111 to prevent it from being scattered everywhere in the environment. In other embodiments, the cutting blade 25 can also be extended away from the ring shape, and the entire cutting device can be located below the support plate 11. A through hole is opened on the support plate 11, and the through hole is provided along the width direction of the support plate 11. When cutting the material strip 200, the cutting blade 25 extends from the bottom of the through hole to the top, thereby also being able to achieve cutting of the material strip 200 by the movement of the cutting blade 25.

[0038] See also Figure 3 When the cutting blade 25 cuts the material strip 200 , the cutting blade 25 is attached to the side wall of the cutting groove 111 , thereby being supported by the side wall of the cutting groove 111 to reduce deformation of the cutting blade 25 .

[0039] Furthermore, in order to prevent debris from accumulating in the cutting groove 111 and affecting the continuous cutting process, a first negative pressure suction port 112 is provided on the side wall of the cutting groove 111. Figure 6 As shown, under the adsorption of the negative pressure mechanism, the debris can be sucked away by the first negative pressure suction port 112 to avoid being blocked in the cutting groove 111, thereby ensuring the continuity of production.

[0040] Furthermore, in order to ensure that the material strip 200 can be in a stationary state during cutting, a plurality of second negative pressure suction ports 113 are provided on the support plate 11 to adsorb the material strip 200 on the surface of the support plate 12 to avoid shaking during cutting, thereby reducing the generation of burrs and ensuring the quality of cutting.

[0041] It can be understood that when the material strip 200 is in a stationary state for cutting, the movement direction of the cutting blade 25 is exactly the width direction of the support plate 11. Therefore, at this time, the extension direction of the cutting groove 111 is exactly the width direction of the support plate 11, that is, the width direction of the material strip 200. Figure 6 As shown; when the material strip 200 is cut in a moving state, since the cutting blade 25 not only makes a linear motion in the cutting direction, but also makes a linear motion in the moving direction of the material strip 200 under the drive of the cutting drive mechanism 40, the motion trajectory of the cutting blade 25 is a composite trajectory of the cutting trajectory and the linear motion, which is inclined relative to the width direction of the support plate 11 and has an angle with the width direction of the support plate 11, as shown in Figure 7.

[0042] See also Figure 3 and Figure 4 , is a structural schematic diagram of the cutting drive mechanism 40 of an embodiment of the present application, including a linear motor 41 and a mounting bracket 42 provided on the linear motor 41, the mounting bracket 42 is used to install the cutting mechanism 20, so that it can drive the cutting mechanism 20 to move along the movement direction parallel to the material strip 200 under the drive of the linear motor 41, wherein the linear motor 41 includes a linear stator 411 and a linear mover 412, the linear stator 411 is installed on the base plate 12, and the linear mover 412 is installed on the mounting bracket 42, thereby driving the cutting mechanism 20 to perform linear motion.

[0043] Furthermore, in order to ensure the stability of the linear motor 41 driving the cutting mechanism 20 to perform linear motion, the material strip cutting device 100 also includes a linear guide rail 50 and a slider 60 that are arranged to slide with each other. The linear guide rail 50 is installed on the machine table 10 and extends in the movement direction of the material strip 200. The slider 60 is installed on the cutting mechanism 20, so that when the linear motor 41 drives the cutting mechanism 20 to perform linear motion, the slider 60 slides synchronously relative to the linear guide rail 50, which can support the mounting frame 42 and guide the movement of the cutting mechanism 20.

[0044] See also Figure 5In one embodiment of the present application, each pair of drive roller assemblies 31 includes an upper roller 311, an upper drive motor 312, a lower roller 313 and a lower cylinder 314. The upper roller 311 and the lower roller 313 are arranged opposite to each other. The upper drive motor 312 is used to drive the upper roller 311 to rotate, and the lower cylinder 314 is used to drive the lower roller 313 to move closer to or away from the upper roller 311. In this way, when the material belt 200 needs to be manually inserted, or when a jam occurs and maintenance is required, the lower roller 313 can be driven closer to or away from the upper roller 311 by the lower cylinder 314, which is convenient for operation.

[0045] The method of using the material strip cutting device 100 of this embodiment is as follows. In order to facilitate the description of the movement process of the material strip 200, the two pairs of driving roller assemblies 31 are respectively defined as the front driving roller assembly a and the rear driving roller assembly b. Figure 2 :

[0046] a. When cutting the stationary strip 200:

[0047] (1) The material strip 200 is first driven forward gradually by the front drive roller assembly a at a low speed of less than 1.5 m / s, and passes through the cutting mechanism 20 and the rear drive roller assembly b;

[0048] (2) When the material strip 200 gradually reaches the position of the cutting mechanism 20, the front driving roller assembly a drives the material strip 200 to gradually decelerate. When the speed of the material strip 200 is reduced to 0, the cutting mechanism 20 cuts the material strip 200;

[0049] (3) After the material strip 200 is cut into the pole pieces 300, the rear drive roller assembly b drives the pole pieces 300 away at a speed twice the speed of the material strip 200, thereby completing the cutting of one pole piece 300 and waiting for the arrival of the next pole piece 300.

[0050] b. When cutting the moving strip 200, the cutting drive mechanism 40 waits near the side where the front drive roller assembly a is located:

[0051] (1) The material strip 200 is first driven forward gradually by the front drive roller assembly a at a high speed exceeding 1.5 m / s, and passes through the cutting mechanism 20 and the rear drive roller assembly b;

[0052] (2) When the material strip 200 enters the rear drive roller assembly b, the rear drive roller assembly b is accelerated to 1.01-1.05 times the speed of the front drive roller to ensure the tension required for cutting the material strip 200;

[0053] (3) When the material strip 200 enters the rear drive roller assembly b and is driven, the linear motor 41 drives the cutting mechanism 20 to accelerate from the initial position. When the acceleration reaches the same speed as the material strip 200, the cutting blade 25 driven by the sprocket begins to cut the material strip 200 transversely. At the same time, during the cutting process, the negative pressure mechanism is turned on to absorb the debris.

[0054] (4) When the cutting is completed, the rear drive roller assembly b accelerates and sends the cut pole piece 300 to the next station. At the same time, the linear motor 41 starts to decelerate and return, waiting for the start signal of cutting the next pole piece 300.

[0055] Therefore, the material strip cutting device 100 of the present application can selectively cut the material strip in a stationary state, and can also cut the material strip in a moving state. It has different usage methods, which improves the practicality of the entire material strip cutting device 100 and also reduces the maintenance cost of the cutting blade 51.

[0056] The technical means disclosed in the present application are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of the present application, and such improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A material strip cutting device (100), for cutting a material strip (200) into pole pieces (300), characterized in that: include: A machine (10) for supporting the material strip (200); A driving roller mechanism (30), mounted on the machine platform (10), for conveying the material strip (200), comprising two pairs of driving roller assemblies (31) disposed separately; A cutting mechanism (20) is provided between the two pairs of driving roller assemblies (31) and is used for cutting the material strip (200) into pole pieces (300) one by one; A cutting drive mechanism (40) is installed on the machine platform (10) and is used to install the cutting mechanism (20) so as to drive the cutting mechanism (20) to move along the moving direction of the material strip (200), thereby achieving cutting of the moving material strip (200).

2. The strip cutting device (100) according to claim 1, characterized in that: The cutting mechanism (20) comprises a first driving member (21), a driving wheel (22), a plurality of driven wheels (23), a conveyor belt (24) and a cutting blade (25); The cutting blade (25) is mounted on the conveyor belt (24); The driving wheel (22) is connected to the first driving member (21), and the plurality of driven wheels (23) are separately arranged on the cutting drive mechanism (40). The conveyor belt (24) is wound around the driving wheel (22) and the plurality of driven wheels (23). Under the drive of the first driving member (21), the cutting blade (25) can move from one side of the material belt (200) to the other side along the width direction of the material belt (200) to achieve cutting of the material belt (200).

3. The strip cutting device (100) according to claim 2, characterized in that: The machine (10) has a support plate (11) for supporting the material belt (200), the conveyor belt (24) is wound around the outside of the support plate (11), and the first driving member (21) and the driving wheel (22) are arranged below the support plate (11).

4. The strip cutting device (100) according to claim 2 or 3, characterized in that: The cutting mechanism (20) further includes a pair of tensioning wheels (26), which are symmetrically arranged on both sides of the driving wheel (22) to tension the conveyor belt (24).

5. The strip cutting device (100) according to claim 2 or 3, characterized in that: The cutting mechanism (20) comprises a plurality of cutting blades (25), and the plurality of cutting blades (25) are arranged at equal intervals on the conveyor belt (24).

6. The strip cutting device (100) according to claim 3, characterized in that: A cutting groove (111) is provided on the support plate (11); when the cutting blade (25) cuts the material strip (200), the cutting blade (25) extends into the cutting groove (111) and adheres to the groove wall of the cutting groove (111).

7. The strip cutting device (100) according to claim 6, characterized in that: A first negative pressure suction port (112) is provided on the side wall of the cutting groove (111).

8. The strip cutting device (100) according to any one of claims 1 to 3, characterized in that: The cutting drive mechanism (40) comprises a linear motor (41) and a mounting frame (42) provided on the linear motor (41); the mounting frame (42) is used to mount the cutting mechanism (20) so as to be able to drive the cutting mechanism (20) to move along a movement direction parallel to the material strip (200) under the drive of the linear motor (41).

9. The strip cutting device (100) according to claim 8, characterized in that: The material strip cutting device (100) further comprises a linear guide rail (50) and a slider (60) which are arranged to slide with each other. The linear guide rail (50) is mounted on the machine platform (10) and extends in the direction of movement of the material strip (200). The slider (60) is mounted on the cutting mechanism (20).

10. The strip cutting device (100) according to any one of claims 1 to 3, characterized in that: Each pair of the driving roller assemblies (31) comprises an upper roller (311), an upper driving motor (312), a lower roller (313) and a lower cylinder (314); the upper roller (311) and the lower roller (313) are arranged opposite to each other; the upper driving motor (312) is used to drive the upper roller (311) to rotate; and the lower cylinder (314) is used to drive the lower roller (313) to move closer to or away from the upper roller (311).

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