Pole piece cutting device

Abstract

The utility model discloses a pole piece cutting device which comprises a cutting cavity, an adsorption back plate, a compression roller component, a waste adsorption component, a material belt conveying component and a laser cutting component. The laser cutting component is arranged on one side of the cutting cavity and used for cutting the material belt in the cutting cavity. The cutting cavity comprises a top wall and a rear wall, and the rear wall is vertically connected with the top wall; a feeding hole is formed in the top wall; the adsorption back plate is located in the cutting cavity and used for adsorbing a material belt. One end of the compression roller component is fixed on the cutting cavity, and the other end of the compression roller component is used for pressing a material belt on the adsorption back plate; the material belt conveying component is located in the cutting cavity, located below the adsorption back plate and used for conveying a material belt. The waste adsorption component is arranged below the material belt conveying component and used for adsorbing waste edges generated when the laser cutting component cuts the material belt and sending the waste edges out of the cutting cavity. A discharge hole is formed in the side of the waste adsorption component; and the waste edges fall off under the action of gravity and are adsorbed by the waste adsorption component, so that the waste edges are completely discharged out of the cutting cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing device technical field, concretely relates to a pole piece cutting device. BACKGROUND

[0002] In the prior art, a laser can be used to cut a material belt to cut out pole pieces. The material belt is flattened and tightened by rollers, and passes through a laser irradiation area from top to bottom. The high temperature of the laser melts or vaporizes the material on the surface of the pole piece material belt and the metal foil in the middle of the pole piece material belt. The laser light path set by the laser program cuts out a pole lug shape that meets the process requirements when the pole piece material belt is moving. Because the pole piece material belt is soft and easily deformed, the laser cutting requires the pole piece material belt to be in a flat and stable state, so that the cutting point is always within the effective focal depth range of the laser during the cutting process, thereby completing the cutting and forming the pole lug.

[0003] One of the cutting methods of laser cutting is suspended cutting. A suction back plate is installed above the cutting area to suction the pole piece material belt, and a pair of small rollers is used below the cutting area to clamp the pole piece material belt or a suction belt to suction the pole piece material belt. The pole piece material belt in the cutting area is in a suspended state, and then the laser cuts out a pole lug shape.

[0004] The small rollers below the cutting area of the suspended cutting method cannot timely remove the discontinuous waste generated by cutting the pole piece material belt, which affects the stability of the pole piece material belt. UTILITY MODEL CONTENTS

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a pole piece cutting device capable of improving the cutting stability of the pole piece.

[0006] The utility model solves the technical problems by adopting the following technical scheme:

[0007] A pole piece cutting device, comprising: a cutting cavity, a suction back plate, a compression roller component, a waste suction component, a material belt transmission component, and a laser cutting component;

[0008] The laser cutting component is arranged on one side of the cutting cavity, and is used to cut the material belt in the cutting cavity.

[0009] The cutting cavity comprises a top wall and a rear wall, and the rear wall is connected perpendicularly to the top wall.

[0010] The top wall is provided with a material inlet.

[0011] The suction back plate is located in the cutting cavity and is used to suction the material belt.

[0012] One end of the compression roller component is fixed to the cutting cavity, and the other end is used to press the material belt on the suction back plate.

[0013] The material belt transmission member is located in the cutting cavity and below the adsorption back plate to transmit the material belt.

[0014] The waste material adsorption member is arranged below the material belt transmission member to adsorb the waste edge generated when the laser cutting member cuts the material belt and send the waste edge out of the cutting cavity.

[0015] One side of the waste material adsorption member is provided with a discharge port.

[0016] The pole piece cutting device as described above, the waste material adsorption member comprises a support, an adsorption belt, a first negative pressure cavity, a second negative pressure cavity, a first negative pressure pipeline and a second negative pressure pipeline.

[0017] The first negative pressure cavity and the second negative pressure cavity are arranged in the support, the first negative pressure cavity is located above the second negative pressure cavity, the first negative pressure pipeline is in communication with the first negative pressure cavity, the second negative pressure pipeline is in communication with the second negative pressure cavity, and the adsorption belt is rotatably arranged on the support.

[0018] The pole piece cutting device as described above, the support is provided with a plurality of rotating shafts for supporting the adsorption belt and a driving shaft, one end of the driving shaft is connected with a driving motor.

[0019] The driving motor drives the driving shaft to rotate, thereby driving the rotating shaft, the adsorption belt to rotate synchronously.

[0020] The pole piece cutting device as described above, the speed of the waste material adsorption member transmitting the waste edge is the same as the speed of the material belt transmission member conveying the material belt.

[0021] The pole piece cutting device as described above, the pressure roller member comprises 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.

[0022] The pole piece cutting device as described above, the rotating roller assembly comprises 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.

[0023] The pole piece cutting device as described above, the pressure roller member further comprises a fixing seat, the fixing seat is fixedly connected with one end of the elastic member away from the rotating roller assembly, and the fixing seat is detachably connected with the cutting cavity.

[0024] The pole piece cutting device as described above, the fixing 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.

[0025] The pole piece cutting device as described above, the fixing seat is provided with an adjusting group on both sides of the elastic member and at the position connecting the fixing seat and the top wall.

[0026] The pole piece cutting device as described above, the adjusting group comprises an adjusting hole provided on the fixing seat, a fixing hole provided on the top wall and a locking member, the fixing seat is moved along the central axis of the adjusting hole, the distance between the fixing seat and the material inlet can be adjusted, and the locking member passes through the adjusting hole and the fixing hole to fix the fixing seat on the top wall.

[0027] The pole piece cutting device has the advantages that:

[0028] The adsorption back plate adsorbs and fixes the material belt, the pressure roller component presses the material belt on the adsorption back plate, so that the material belt is stable during the cutting process, and the pressure roller component can play a role of straightening the material belt, avoids the material belt from deviating in the cutting cavity, and ensures the accuracy of the cutting position.

[0029] The material belt transmission component drives the material belt to move from the material inlet to the material outlet direction, after moving to a suitable position, the laser cutting component emits laser to cut the material belt, the waste edge cut out falls under the action of gravity, the waste adsorption component adsorbs the waste edge and sends the waste edge out of the cutting cavity, no matter whether the waste edge is continuous or intermittent, since the waste edge adsorption component adsorbs the waste edge by adsorption force, the waste edge can be completely discharged out of the cutting cavity. BRIEF DESCRIPTION OF DRAWINGS

[0030] The utility model is further described below in combination with the drawings and examples.

[0031] Figure 1 is a three-dimensional structure schematic view of the embodiment omitting the laser cutting component;

[0032] Figure 2 is one of waste material adsorption component structure schematic views of the embodiment omitting the adsorption belt;

[0033] Figure 3 is the waste material adsorption component structure schematic view two of the embodiment omitting the adsorption belt;

[0034] Figure 4 is a three-dimensional structure schematic view of the embodiment omitting the material belt transmission component and the laser cutting component;

[0035] Figure 5 is a three-dimensional structure schematic view of the pressure roller component of the embodiment;

[0036] The reference signs are as follows:

[0037] 1, cutting cavity; 11, top wall; 111, inlet; 12, bottom wall; 121, outlet; 13, rear wall;

[0038] 2, adsorption back plate;

[0039] 3, material belt transmission member;

[0040] 4, compression roller member; 41, elastic member; 42, rotating roller assembly; 421, roller seat; 422, rotating roller; 43, fixed seat; 441, adjusting hole;

[0041] 5, waste adsorption member; 51, bracket; 52, adsorption belt; 531, first negative pressure cavity; 532, second negative pressure cavity; 541, first negative pressure pipeline; 542, second negative pressure pipeline; 55, rotating shaft; 56, driving shaft; 57, driving motor. DETAILED DESCRIPTION

[0042] The concept, specific structure and technical effects of the present application will be described clearly and completely in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments, based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. In addition, all the coupling / connection relations involved in the patent do not mean that the components are directly connected, but means that a better coupling structure can be composed by adding or reducing coupling accessories according to the specific implementation situation. The technical features in the present application can be combined interactively without mutual contradiction and conflict.

[0043] REFERENCE Figure 1 、 Figure 3 A pole piece cutting device, comprising: a cutting cavity 1, an adsorption back plate 2, a compression roller member 4, a waste adsorption member 5, a material belt transmission member 3 and a laser cutting member (not shown in the figure);

[0044] The laser cutting member is arranged on one side of the cutting cavity 1, and the laser cutting member is used to cut the material belt in the cutting cavity 1;

[0045] The cutting cavity 1 comprises a top wall 11 and a rear wall 13, and the rear wall 13 is connected with the top wall 11 perpendicularly;

[0046] The top wall 11 is provided with an inlet 111;

[0047] The adsorption back plate 2 is located in the cutting cavity 1 and is used to adsorb the material belt;

[0048] One end of the pressing roller member 4 is fixed to the cutting cavity 1, and the other end is used to press the material belt on the adsorption backboard 2.

[0049] The material belt transmission member 3 is located in the cutting cavity 1 and below the adsorption backboard 2, and is used to transmit the material belt.

[0050] The waste adsorption member 5 is arranged below the material belt transmission member 3, and is used to adsorb the waste edge generated when the laser cutting member cuts the material belt, and send the waste edge out of the cutting cavity 1.

[0051] One side of the waste adsorption member 5 is provided with a discharge port 121.

[0052] The adsorption backboard 2 adsorbs and fixes the material belt, and the pressing roller member 4 presses the material belt on the adsorption backboard 2, so that the material belt remains stable during cutting. At the same time, the pressing roller member 4 can play the role of straightening the material, avoiding the deviation of the material belt in the cutting cavity 1, and ensuring the accuracy of the cutting position.

[0053] The material belt transmission member 3 drives the material belt to move from the inlet port 111 to the discharge port 121, and after moving to the appropriate position, the laser cutting member emits laser to cut the material belt to form a tab. The cut waste edge falls under the action of gravity, and the waste adsorption member 5 adsorbs the material belt to send the waste edge out of the cutting cavity 1. Whether the waste edge is continuous or intermittent, since the waste edge adsorption member 5 adsorbs the waste edge by adsorption force, the waste edge can be completely discharged out of the cutting cavity 1.

[0054] In this embodiment, the waste adsorption member is used to replace the small roller in the prior art, which is used to adsorb the waste edge, and solves the problem that the small roller cannot remove the discontinuous waste.

[0055] Referring to Figure 3 、 Figure 4 In one embodiment, the waste adsorption member 5 includes a bracket 51, an adsorption belt 52, a first negative pressure cavity 531, a second negative pressure cavity 532, a first negative pressure pipeline 541, and a second negative pressure pipeline 542.

[0056] The first negative pressure cavity 531 and the second negative pressure cavity 532 are arranged in the bracket 51, the first negative pressure cavity 531 is located above the second negative pressure cavity 532, the first negative pressure pipeline 541 is in communication with the first negative pressure cavity 531, the second negative pressure pipeline 542 is in communication with the second negative pressure cavity 532, and the adsorption belt 52 is rotatably arranged on the bracket 51.

[0057] The first negative pressure cavity 531 and the second negative pressure cavity 532 are arranged in the bracket 51, the first negative pressure cavity 531 and the second negative pressure cavity 532 are communicated with the first negative pressure pipeline 541 and the second negative pressure pipeline 542 respectively, the cavity pressure of the second negative pressure cavity 532 can be less than that of the first negative pressure cavity 531, or even no pressure, after the waste edge is adsorbed by the adsorption belt 52 at the first negative pressure cavity 531, the waste edge is driven to flow to the position of the second negative pressure cavity 532, at this time, the waste edge falls from the waste adsorption member 5 due to the gravity of the waste edge being greater than the adsorption force.

[0058] Further, the bracket 51 is provided with a plurality of rotating shafts 55 and driving shafts 56 for supporting the adsorption belt 52, one end of the driving shaft 56 is connected with a driving motor 57;

[0059] The driving motor 57 drives the driving shaft 56 to rotate, and then drives the rotating shaft 55, the adsorption belt 52 to rotate synchronously. The driving motor 57 is driven to improve the intelligent degree of the device, and manual control of the waste adsorption member 5 is not needed.

[0060] In an embodiment, the speed of the waste adsorption member 5 for transmitting the waste edge is the same as the speed of the material belt transmission member 3 for conveying the material belt. The material belt is prevented from being deformed due to being pulled by the waste adsorption member 5, and the deformed and position-offset pole pieces are avoided.

[0061] In an embodiment, the pressure roller member 4 includes 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.

[0062] When the thickness and speed of the material belt change, the elastic member 41 slightly deforms, adapts to the change of the material belt, and keeps the material belt pressed on the adsorption back plate 2 at the same time, when the material belt is conveyed, the rotating roller assembly 42 rotates, so that the material belt is always attached to the adsorption back plate 2. The elastic member 41 makes the material belt transmission member 3 have self-adaptability, that is, even if the thickness and transmission speed of the material belt change, the stability of the material belt is always maintained, and the influence on the cutting effect is further reduced.

[0063] Referring to Figure 4 , Figure 5 Further, the rotating roller assembly 42 includes 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, the roller shafts of the rotating rollers 422 are parallel to the adsorption back plate 2.

[0064] The roller seat 421 serves as a support structure of the rotating roller 422 and transmits the elastic force of the elastic member 41 to the rotating roller 422. When the rotating roller 422 is affected by the thickness change of the material belt, the elastic member 41 can apply a reverse elastic force to the rotating roller 422 through the roller seat 421 to maintain the contact between the material belt and the rotating roller 422.

[0065] The rotating roller 422 rotates with the transmission of the material belt. The rotating roller 422 rolls with the material belt, and the friction force brought by the rotating roller 422 to the material belt is smaller compared with sliding friction, which can avoid pulling the material belt and reduce the tension change and deformation of the material belt.

[0066] Further, the pressing roller component 4 further comprises a fixed seat 43 fixedly connected to one 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.

[0067] With the increase of the use time of the pressing roller component 4, the surface of the rotating roller 422 is inevitably worn and scratched, and the material of the elastic member 41 is fatigued to cause the decrease of the elastic force. 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 detached together, so that the elastic member 41, the rotating roller assembly 42 or the entire pressing roller component 4 can be replaced, thereby reducing the influence of the damage and aging of the pressing roller component 4 on the stable material belt.

[0068] 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 will be increased, and dust is easy to adhere to the pressing roller component 4 during cutting of the material belt. In addition, it is also troublesome to detach the fixed seat 43.

[0069] 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. When the fixed seat 43 is detached, it can be directly operated on the top wall 11, which is convenient and fast.

[0070] More specifically, the elastic member 41 is a metal sheet with elasticity.

[0071] More specifically, the fixed seat 43 is arranged on the top wall 11 and located on both sides of the elastic member 41, and an adjusting group for adjusting the connection position of the fixed seat 43 and the top wall 11 is arranged on the fixed seat 43.

[0072] 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 moving 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 large or small, so that the elastic range of the rotating roller assembly 42 is expanded, and the frictional resistance between the rotating roller assembly 42 and the material belt is reduced. When the material belt is relatively thick, the distance between the fixed seat 43 and the material inlet 111 is adjusted to be small, so that the elastic range of the rotating roller assembly 42 is reduced, and the material belt is kept pressed on the adsorbing back plate 2.

[0073] More specifically, the adjusting group comprises 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, so that the distance between the fixed seat 43 and the material inlet 111 can be adjusted. The locking member passes through the adjusting hole 441 and the fixing hole, so that the fixed seat 43 is fixed on the top wall 11.

[0074] More specifically, the adjusting hole 441 is in an elliptical shape.

[0075] The above is a specific description of the preferred embodiment of the present application. However, the present application is not limited to the above-mentioned embodiment. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. An electrode tab cutting device, characterized by, The utility model relates to a cutting cavity (1), adsorption backboard (2), pressure roller component (4), waste material adsorption component (5), material belt transmission component (3) and laser cutting component are included; The laser cutting component is located one side of the cutting cavity (1), and the laser cutting component is used to cut the material belt in the cutting cavity (1); The cutting cavity (1) includes top wall (11) and rear wall (13), and the rear wall (13) is connected with the top wall (11) vertically; The top wall (11) is equipped with the material inlet (111); The adsorption backboard (2) is located in the cutting cavity (1) and is used to adsorb the material belt; 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 backboard (2); The material belt transmission component (3) is located in the cutting cavity (1) and is located below the adsorption backboard (2) and is used to transmit the material belt; The waste material adsorption component (5) is located below the material belt transmission component (3) and is used to adsorb the waste edge generated when the laser cutting component cuts the material belt and sends the waste edge out of the cutting cavity (1); One side of the waste material adsorption component (5) is equipped with the material outlet (121). The waste material adsorption component (5) includes support (51), adsorption belt (52), first negative pressure cavity (531), second negative pressure cavity (532), first negative pressure pipeline (541) and second negative pressure pipeline (542); 2. The pole piece cutting apparatus of claim 1, wherein: The first negative pressure cavity (531) and the second negative pressure cavity (532) are located in the support (51), the first negative pressure cavity (531) is located above the second negative pressure cavity (532), the first negative pressure pipeline (541) is communicated with the first negative pressure cavity (531), the second negative pressure pipeline (542) is communicated with the second negative pressure cavity (532), and the adsorption belt (52) is rotatably arranged on the support (51). A plurality of rotating shafts (55) and driving shafts (56) for supporting the adsorption belt (52) are arranged on the support (51), and one end of the driving shaft (56) is connected with a driving motor (57); 3. The pole piece cutting apparatus of claim 2, wherein: The driving motor (57) drives the driving shaft (56) to rotate, and then drives the rotating shaft (55) and the adsorption belt (52) to rotate synchronously. The speed of the waste material adsorption component (5) for transmitting the waste edge is same with the speed of the material belt transmission component (3) for transmitting the material belt.

4. The pole piece cutting apparatus of claim 1, wherein: The pressure roller component (4) includes elastic member (41) and rotating roller assembly (42), one end of the elastic member (41) is fixed on the cutting cavity (1), and the other end is rotatably connected with the rotating roller assembly (42).

5. The pole piece cutting apparatus of claim 1, wherein: The rotating roller assembly (42) includes a roller seat (421) fixedly connected with the elastic member (41) and rotating rollers (422) rotatably arranged at two ends of the roller seat (421), and the roller shaft of the rotating roller (422) is parallel to the adsorption backboard (2).

6. The pole piece cutting apparatus of claim 5, wherein: ​ 7. The pole piece cutting apparatus of claim 5, wherein: The pressing roller component (4) further comprises a fixing base (43) fixedly connected to one end of the elastic member (41) away from the rotating roller assembly (42), and the fixing base (43) is detachably connected with the cutting cavity (1).

8. The pole piece cutting apparatus of claim 7, wherein: The fixing base (43) is arranged on the top wall (11), the elastic member (41) extends into the cutting cavity (1) from the feeding opening (111), and the rotating roller assembly (42) is located in the cutting cavity (1).

9. The pole piece cutting apparatus of claim 7, wherein: Adjusting groups are arranged on the fixing base (43) and located on both sides of the elastic member (41) to adjust the connecting position of the fixing base (43) and the top wall (11).

10. The pole piece cutting apparatus of claim 9, wherein: The adjusting groups comprise adjusting holes (441) arranged on the fixing base (43), fixing holes arranged on the top wall (11), and locking members. The fixing base (43) is moved along the central axis of the adjusting holes (441), the distance between the fixing base (43) and the feeding opening (111) can be adjusted, and the locking members pass through the adjusting holes (441) and the fixing holes to fix the fixing base (43) on the top wall (11).

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