Device for laser high-speed stable cutting of pole piece

Abstract

The utility model discloses a device for laser high-speed stable cutting of a pole piece. The device comprises a cutting cavity, an adsorption back plate, a compression roller component and a material belt conveying component. The cutting cavity comprises a top wall, a bottom wall and a rear wall, the top wall and the bottom wall are oppositely arranged, and the upper end and the lower end of the rear wall are connected with the top wall and the bottom wall correspondingly. A feeding hole is formed in the top wall, and a discharging hole is formed in the bottom wall; the adsorption back plate is located in the cutting cavity, fixed to one side of the feeding port and used for adsorbing a material belt. The material belt conveying component is located in the cutting cavity, located below the adsorption back plate and used for conveying a material belt. One end of the pressing roller component is fixed to the cutting cavity, and the other end of the pressing roller component is used for pressing the material belt on the adsorption back plate. The material belt is arranged in the cutting cavity and provided with two fixing positions, one fixing position is arranged between the pressing roller component and the adsorption back plate, the other fixing position is arranged at the material belt conveying component, the material belt between the pressing roller component and the material belt conveying component is stable, and when the material belt between the pressing roller component and the material belt conveying component is cut through laser, the deviation probability of the material belt is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pole piece cutting device, concretely relates to a device for laser high -speed stable cutting pole piece. BACKGROUND

[0002] Battery is one of the cores of new energy, and is more and more widely used, and the form of battery also presents diversification. In the process of battery manufacturing, the tab forming process is an important link in manufacturing, and has important influence on its productivity and quality.

[0003] Laser cutting is that laser head irradiates laser to the pole piece material belt to be cut, the material belt is flattened and taut through roller, and from top to bottom through laser irradiation area, and the high temperature of laser melts or gasifies the material on the surface of pole piece material belt and the metal foil material in the middle of pole piece material belt. Through the laser light path set on the laser program, the tab shape meeting the process requirement is cut out when the pole piece material belt moves. Because the pole piece material belt is soft and easy to deform, and laser cutting needs the pole piece material belt to be in flat and stable state, so that the cutting point is always in the effective focal depth range of laser in the cutting process, thereby completing cutting and forming tab.

[0004] One of laser cutting is suspended cutting, that is, the cutting area is installed with adsorbing back plate to adsorb pole piece material belt above the cutting area, and a pair of small rollers is used to clamp pole piece material belt or adsorbed belt adsorbs pole piece material belt below the cutting area, and the pole piece material belt in the cutting area is in suspended state, and then laser cuts out tab shape.

[0005] The adsorption effect of adsorbing back plate above the cutting area is affected by negative pressure, if the negative pressure is too large, the pole piece material belt is slightly deformed after adsorption, and if the negative pressure is too small, the pole piece material belt is not adsorbed stably, and the cutting effect is affected. UTILITY MODEL CONTENTS

[0006] In order to overcome the defects of the prior art, the utility model provides a device for laser high -speed stable cutting pole piece.

[0007] The utility model adopts the technical scheme in the independent claims:

[0008] A device for laser high -speed stable cutting pole piece, comprising: cutting cavity, adsorbing back plate, pressure roller component and material belt transmission component;

[0009] The cutting cavity comprises top wall, bottom wall and rear wall, the top wall is opposite to the bottom wall, and the upper and lower ends of the rear wall are connected with the top wall and the bottom wall respectively;

[0010] The top wall is equipped with inlet, and the bottom wall is equipped with outlet;

[0011] The adsorbing back plate is located in the cutting cavity and is fixed to one side of the inlet to adsorb the material belt.

[0012] The material belt transmission member is located in the cutting cavity and below the adsorption back plate to transmit the material belt.

[0013] One end of the pressing roller member is fixed on the cutting cavity, and the other end is used to press the material belt on the adsorption back plate.

[0014] The material belt transmission member includes an elastic member and a rotating roller assembly, one end of the elastic member is fixed on the cutting cavity, and the other end is rotatably connected with the rotating roller assembly.

[0015] The rotating roller assembly includes a roller seat fixedly connected with the elastic member and rotating rollers rotatably arranged at two ends of the roller seat, and the roller shafts of the rotating rollers are parallel to the adsorption back plate.

[0016] The pressing roller member further includes a fixed seat, the fixed seat is fixedly connected with the elastic member away from the rotating roller assembly, and the fixed seat is detachably connected with the cutting cavity.

[0017] The fixed seat is arranged on the top wall, the elastic member extends into the cutting cavity from the material inlet, and the rotating roller assembly is located in the cutting cavity.

[0018] The fixed seat is arranged on the top wall, the elastic member extends into the cutting cavity from the material inlet, and the rotating roller assembly is located in the cutting cavity.

[0019] The adjusting group includes an adjusting hole arranged on the fixed seat, a fixing hole arranged on the top wall, and a locking member, the fixed seat is moved along the central axis of the adjusting hole, the distance between the fixed seat and the material inlet can be adjusted, and the locking member passes through the adjusting hole and the fixing hole to fix the fixed seat on the top wall.

[0020] The material inlet is provided with a material guiding mechanism above, the material guiding mechanism rolls and clamps the material belt about to enter the material inlet.

[0021] The material guiding mechanism includes a material guiding roller fixed seat, a left material guiding roller rotatably connected with one end of the material guiding roller fixed seat, and a right material guiding roller rotatably connected with one end of the material guiding roller fixed seat.

[0022] The material guiding roller fixed seat is fixed on the outer wall of the cutting cavity.

[0023] The left material guiding roller and the right material guiding roller jointly clamp the material belt.

[0024] The device as described above, the axial of the left material roller and the right material roller is located on two horizontal planes.

[0025] The present application has the advantages that:

[0026] The material belt is fed into the cutting cavity from the feeding port and flows out from the discharging port. The material belt transmission member provides power to the material belt, so that the material belt moves in a single direction along the feeding port to the discharging port. The compression roller member presses the material belt on the adsorption back plate. The material belt is in the cutting cavity, and has two fixed positions, one between the compression roller member and the adsorption back plate, and the other at the material belt transmission member. The material belt between the compression roller member and the material belt transmission member is stable. When the laser cutting compression roller member cuts the material belt between the compression roller member and the material belt transmission member, the probability of material belt deviation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described below in combination with the drawings and examples.

[0028] Fig. 1 is a schematic diagram of the three-dimensional structure of the present embodiment;

[0029] Fig. 2 is a schematic diagram of the three-dimensional structure of the present embodiment omitting the material belt transmission member;

[0030] Fig. 3 is a schematic diagram of the three-dimensional structure of the compression roller member of the present embodiment;

[0031] The reference signs are as follows:

[0032] 1, cutting cavity; 11, top wall; 111, feeding port; 12, bottom wall; 121, discharging port; 13, rear wall;

[0033] 2, adsorption back plate;

[0034] 3, material belt transmission member;

[0035] 4, compression roller member; 41, elastic member; 42, rotating roller assembly; 421, roller seat; 422, rotating roller; 43, fixed seat; 441, adjusting hole;

[0036] 5, material guiding mechanism; 51, material guiding roller fixed seat; 52, left material guiding roller; 53, right material guiding roller; DETAILED DESCRIPTION

[0037] The utility model discloses a concept, specific structure and the technical effect produced of the utility model will be clearly and completely described below in combination with the embodiment and the drawing, to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, and not all embodiments, based on the embodiment of the utility model, the other embodiments obtained by the person skilled in the art without paying creative labor all belong to the protection scope of the utility model. In addition, all the connection / connection relations involved in the patent do not mean that the components directly connect, but can be composed of a better connection structure by adding or reducing the connection auxiliary parts according to the specific implementation situation. The various technical features in the utility model creation can be interactively combined without mutual contradiction and conflict.

[0038] Reference Figs. 1 to 3 A device for laser high-speed stable cutting pole piece, comprising: a cutting cavity 1, an adsorption back plate 2, a pressure roller component 4 and a material belt transmission component 3.

[0039] The cutting cavity 1 comprises a top wall 11, a bottom wall 12 and a back wall 13, the top wall 11 and the bottom wall 12 are oppositely arranged, and the upper and lower ends of the back wall 13 are connected with the top wall 11 and the bottom wall 12 respectively.

[0040] The top wall 11 is provided with a material inlet 111, and the bottom wall 12 is provided with a material outlet 121.

[0041] The adsorption back plate 2 is located in the cutting cavity 1 and is fixed on one side of the material inlet 111, and is used for adsorbing the material belt.

[0042] The material belt transmission component 3 is located in the cutting cavity 1 and below the adsorption back plate 2, and is used for transmitting the material belt.

[0043] One end of the pressure roller component 4 is fixed on the cutting cavity 1, and the other end is used to press the material belt on the adsorption back plate 2.

[0044] The material belt transmission component 3 provides power to the material belt, so that the material belt moves in a single direction along the material inlet 111 to the material outlet 121, the pressure roller component 4 presses the material belt on the adsorption back plate 2, and the material belt has two fixed positions in the cutting cavity 1 during cutting, one is between the pressure roller component 4 and the adsorption back plate 2, and the other is at the material belt transmission component 3, the material belt between the pressure roller component 4 and the material belt transmission component 3 is stable, therefore, when the laser cuts the material belt between the pressure roller component 4 and the material belt transmission component 3, the probability of material belt deviation is reduced, and the laser cutting is out of focus due to material belt shaking, which affects the cutting effect.

[0045] In an embodiment, the material belt conveying member 3 comprises an elastic member 41 and a rotating roller assembly 42, one end of the elastic member 41 is fixed to the cutting cavity 1, and the other end is rotationally connected with the rotating roller assembly 42.

[0046] When the thickness and speed of the material belt change, the elastic member 41 slightly deforms to adapt to the changes of the material belt while keeping the material belt pressed on the adsorbing back plate 2. When the material belt is conveyed, the rotating roller assembly 42 rotates with the material belt, so that the material belt is always attached to the adsorbing back plate 2. The elastic member 41 makes the material belt conveying member 3 self-adapting, that is, even if the thickness and conveying speed of the material belt change, the stability of the material belt is always maintained, and the effect of cutting is further reduced.

[0047] Further, the rotating roller assembly 42 comprises a roller seat 421 fixedly connected with the elastic member 41 and rotating rollers 422 rotationally arranged at two ends of the roller seat 421, and the roller shafts of the rotating rollers 422 are parallel to the adsorbing back plate 2.

[0048] The roller seat 421 is a supporting structure of the rotating rollers 422, and the elastic force of the elastic member 41 is transmitted to the rotating rollers 422. When the rotating rollers 422 are affected by the change of the thickness of the material belt, the elastic member 41 can exert a reverse elastic force on the rotating rollers 422 through the roller seat 421 to keep the material belt in contact with the rotating rollers 422.

[0049] The rotating rollers 422 rotate with the conveying of the material belt, and the rotating rollers 422 roll with the material belt, which has smaller friction force than sliding friction, so that the material belt can be prevented from being pulled and the tension change and deformation of the material belt can be reduced.

[0050] Further, the pressure roller member 4 further comprises a fixed seat 43, the fixed seat 43 is fixedly connected to the end of the elastic member 41 away from the rotating roller assembly 42, and the fixed seat 43 is detachably connected with the cutting cavity 1.

[0051] With the increase of the use time of the pressure roller member 4, the surface of the rotating rollers 422 is inevitably worn and scratched, and the material of the elastic member 41 is fatigued to cause the elastic force to decrease. At this time, the fixed seat 43 can be detached from the cutting cavity 1, and the rotating roller assembly 42 and the elastic member 41 are also detached together, so that the elastic member 41, the rotating roller assembly 42 or the entire pressure roller member 4 can be replaced, and the effect of stabilizing the material belt affected by the damage and aging of the pressure roller member 4 is reduced.

[0052] In the above embodiment, the fixed position of the fixed seat 43 can be the inner wall or the rear wall 13 of the cutting cavity 1. However, if the fixed seat 43 is fixed at this position, the complexity of the internal structure of the cutting cavity 1 is increased, dust is easily attached to the pressure roller member 4 when the material belt is cut, and the fixed seat 43 is also troublesome to detach.

[0053] Specifically, the fixed seat 43 is arranged on the top wall 11, the elastic member 41 extends into the cutting cavity 1 from the material inlet 111, and the rotating roller assembly 42 is located in the cutting cavity 1. The elastic member 41 extends into the cutting cavity 1 after bending at the material inlet 111, and when the fixed seat 43 is disassembled, it can be directly operated on the top wall 11, which is convenient and fast.

[0054] More specifically, the elastic member 41 is a metal sheet with elasticity.

[0055] More specifically, the fixed seat 43 is arranged on the top wall 11, the elastic member 41 extends into the cutting cavity 1 from the material inlet 111, and the rotating roller assembly 42 is located in the cutting cavity 1. The elastic member 41 extends into the cutting cavity 1 after bending at the material inlet 111, and when the fixed seat 43 is disassembled, it can be directly operated on the top wall 11, which is convenient and fast.

[0056] By adjusting the adjusting group, the length of the elastic member 41 extending into the cutting cavity 1 can be adjusted. When the length of the elastic member 41 extending into the cutting cavity 1 increases, the deformation of the elastic member 41 in the cutting cavity 1 increases, and the movement range of the rotating roller assembly 42 also increases. When the material belt transmission speed is relatively fast, the distance between the fixed seat 43 and the material inlet 111 is adjusted to be larger or smaller, so as to expand the elastic range of the rotating roller assembly 42 and reduce the frictional resistance between the rotating roller assembly 42 and the material belt; when the material belt is relatively thick, the distance between the fixed seat 43 and the material inlet 111 is adjusted to be smaller, so as to reduce the elastic range of the rotating roller assembly 42 and keep the material belt pressed on the adsorbing back plate 2.

[0057] More specifically, the adjusting group includes an adjusting hole 441 arranged on the fixed seat 43, a fixing hole (not shown in the figure) arranged on the top wall 11, and a locking member (not shown in the figure). The fixed seat 43 is moved along the central axis of the adjusting hole 441, the distance between the fixed seat 43 and the material inlet 111 can be adjusted, and the locking member passes through the adjusting hole 441 and the fixing hole to fix the fixed seat 43 on the top wall 11.

[0058] More specifically, the adjusting hole 441 is in an elliptical shape.

[0059] In an embodiment, a material flattening mechanism 5 is arranged above the material inlet 111, and the material flattening mechanism 5 rolls and clamps the material belt entering the material inlet 111. The material flattening mechanism 5 is used to flatten the material belt entering the material inlet 111 and plays a role of preliminarily stabilizing the material belt.

[0060] Further, the material flattening mechanism 5 includes a material flattening roller fixed seat 51, a left material flattening roller 52 rotatably connected to one end of the material flattening roller fixed seat 51, and a right material flattening roller 53 rotatably connected to one end of the material flattening roller fixed seat 51.

[0061] The material flattening roller fixed seat 51 is fixed to the outer wall of the cutting cavity 1.

[0062] The left material roller 52 and the right material roller 53 jointly hold the material belt.

[0063] Specifically, the axial positions of the left material roller 52 and the right material roller 53 are located on two horizontal planes.

[0064] The left material roller 52 and the right material roller 53 can be independently adjusted to better adapt to material belts of different thicknesses and materials. By independently adjusting the horizontal positions of the left material roller 52 and the right material roller 53, it can be ensured that the material belt does not deviate or twist when passing through the material roller, thereby improving the stability and accuracy of feeding.

[0065] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the above-mentioned embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A device for laser high speed stable cutting of pole pieces, characterized in that, include: The components include a cutting cavity (1), an adsorption back plate (2), a pressure roller assembly (4), and a material conveyor assembly (3); The cutting cavity (1) includes a top wall (11), a bottom wall (12) and a rear wall (13). The top wall (11) and the bottom wall (12) are arranged opposite to each other. The upper and lower ends of the rear wall (13) are respectively connected to the top wall (11) and the bottom wall (12). The top wall (11) is provided with a feed inlet (111), and the bottom wall (12) is provided with a discharge outlet (121); The adsorption backplate (2) is located inside the cutting cavity (1) and fixed to one side of the feed inlet (111) for adsorbing the material strip; The material conveying component (3) is located inside the cutting cavity (1) and below the adsorption back plate (2) for conveying the material belt; One end of the pressure roller component (4) is fixed to the cutting cavity (1), and the other end is used to press the material strip onto the adsorption back plate (2).

2. The apparatus of claim 1, wherein: The pressure roller component (4) includes an elastic element (41) and a rotating roller assembly (42). One end of the elastic element (41) is fixed to the cutting cavity (1), and the other end is rotatably connected to the rotating roller assembly (42).

3. The apparatus of claim 2, wherein: The rotating roller assembly (42) includes a roller seat (421) fixedly connected to the elastic member (41) and a rotating roller (422) rotatably mounted on the roller seat (421) at both ends. The roller shaft of the rotating roller (422) is parallel to the adsorption back plate (2).

4. The apparatus of claim 2, wherein: The pressure roller component (4) further includes a fixing seat (43), which is fixedly connected to one end of the elastic member (41) away from the rotating roller assembly (42), and the fixing seat (43) is detachably connected to the cutting cavity (1).

5. The apparatus of claim 4, wherein: The fixed seat (43) is provided on the top wall (11), the elastic element (41) extends from the feed port (111) into the cutting cavity (1), and the rotating roller assembly (42) is located in the cutting cavity (1).

6. The apparatus of claim 5, wherein: An adjustment group is provided on the fixed seat (43) and on both sides of the elastic member (41) to adjust the connection position between the fixed seat (43) and the top wall (11).

7. The apparatus of claim 6, wherein: The adjustment assembly includes an adjustment hole (441) on the fixed seat (43), a fixing hole on the top wall (11), and a locking member. Moving the fixed seat (43) along the central axis of the adjustment hole (441) can adjust the distance between the fixed seat (43) and the feed inlet (111). The locking member passes through the adjustment hole (441) and the fixing hole to fix the fixed seat (43) on the top wall (11).

8. The apparatus of claim 1, wherein: A material-strapping mechanism (5) is provided above the feed inlet (111), and the material-strapping mechanism (5) rolls and clamps the material strip that is about to enter the feed inlet (111).

9. The apparatus of claim 8, wherein: The material feeding mechanism (5) includes a material feeding roller fixing seat (51), a left material feeding roller (52) rotatably connected to the material feeding roller fixing seat (51) at one end, and a right material feeding roller (53) rotatably connected to the material feeding roller fixing seat (51) at one end; The material rolling roller fixing seat (51) is fixed on the outer wall of the cutting cavity (1); The left material rolling roller (52) and the right material rolling roller (53) jointly hold the material belt.

10. The apparatus of claim 9, wherein: The axial direction of the left material rolling roller (52) and the right material rolling roller (53) is located on two horizontal planes.

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