Pole piece cutting equipment

Abstract

The utility model discloses a pole piece cutting device which comprises a bottom plate, a feeding compression roller, a circular knife supporting roller, a discharging supporting roller and a control device, a pole piece is supported on the upper surface of the circular knife supporting roller in parallel through the feeding compression roller and the discharging supporting roller, and the pole piece cutting device further comprises a motor module fixed to the bottom plate and located above the circular knife supporting roller. The motor module extends in the axial direction of the circular knife supporting roller, at least one sliding table is installed on the motor module in a sliding mode, a circular knife used for cutting the pole piece is installed at the lower end of the sliding table through a lifting mechanism, a knife rest of the circular knife and the lifting mechanism are of an integrated structure, and a knife rest sealing cover is further installed on the knife rest of the circular knife. Therefore, when the circular knife needs to be maintained and replaced, only the circular knife needs to be disassembled, the knife rest does not need to be disassembled, time and labor are saved, and simplicity and rapidness are achieved; the knife rest sealing cover is installed, only the cutting point of the pole piece is exposed, and the problems that in the production process, when the pole piece is broken and connected, a circular knife is prone to scratching an operator, and the danger is high are solved.

Description

Technical Field

[0001] This utility model relates to the field of power battery electrode cutting technology, and in particular to an electrode cutting device. Background Technology

[0002] Lithium-ion battery electrode cutting is generally completed by mechanical circular cutter. The mechanical circular cutter is generally fixed on the circular roller on the cutter holder. The lower roller is the cutter groove to realize the cutting function of the electrode. In this process, the electrode passes through the middle of the upper and lower circular rollers. The following disadvantages exist in cutting with this structure: (1) When the circular cutter needs to be replaced and maintained, the entire cutter holder must be removed each time, and the cutter holder must be disassembled. Replacing the circular cutter is time-consuming and laborious; (2) When the electrode is broken and reconnected during production, the circular cutter is very likely to scratch the operator, which is very dangerous; (3) The angle between the two circular rollers is the dust concentration area. Some dust overflows along the right side of the angle between the circular blade and the circular cutter support roller, and some adheres to the circular cutter support roller. Since there is an angle between the circular blade and the circular cutter support roller, the dust in this position is difficult to handle. A lot of it is carried away by the electrode, which leads to short circuit of the core later.

[0003] Therefore, how to solve the problem that when the circular cutter needs to be replaced or maintained, the entire cutter holder must be removed and disassembled each time, which is time-consuming and laborious; and that the circular cutter is very likely to scratch the operator when the electrode is broken and spliced ​​during the production process, which is very dangerous, has become an important technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes an electrode cutting device.

[0005] This utility model discloses an electrode cutting device, including a base plate, a feeding pressure roller, a circular knife support roller, an output support roller, and a control device. The electrode is supported parallel to the upper surface of the circular knife support roller by the feeding pressure roller and the output support roller. It also includes a motor module fixed on the base plate and located above the circular knife support roller. The motor module extends along the axial direction of the circular knife support roller and has at least one slide table slidably mounted on it. The lower end of the slide table is equipped with a circular knife for cutting the electrode through a lifting mechanism. The blade holder of the circular knife and the lifting mechanism are integrated into one structure, and a blade holder cover is also installed on the blade holder of the circular knife.

[0006] In this way, the circular cutter's tool holder and lifting mechanism are designed as an integrated structure. When the circular cutter needs maintenance or replacement, only the circular cutter needs to be disassembled, eliminating the need for frequent disassembly of the entire tool holder to replace the cutter. This simplifies and speeds up tool replacement and maintenance. Furthermore, the circular cutter's tool holder is equipped with a tool holder enclosure, and the cutting circular cutter adopts a fully enclosed design, leaving only the electrode cutting point exposed. This avoids the highly dangerous problem of the circular cutter easily cutting operators when electrode strips break and are reconnected during production.

[0007] Preferably, the motor module includes a lead screw and a module motor. The module motor is communicatively connected to the control device. The slide is provided with a threaded hole, which is threadedly connected to the lead screw. When the module motor is started, the lead screw is driven to rotate, and the rotational motion is converted into linear motion, which in turn drives the slide to move along the axial direction of the lead screw, thereby moving the circular cutter.

[0008] This makes it easier to adjust the width of the electrode cutting.

[0009] Preferably, the lifting mechanism is a lifting cylinder, which is communicatively connected to the control device. The upper end of the lifting cylinder is fixed to the lower end of the slide, and the lower end is equipped with the circular knife via the knife holder.

[0010] This makes it easy to replace the circular cutter; at the same time, when the electrode breaks or is reconnected, the lifting cylinder can be controlled at any time to drive the circular cutter away from the electrode, and it will not be affected by the cutter holder.

[0011] Preferably, a dust removal fixture is also installed below the circular knife support roller. The dust removal fixture extends from below the circular knife support roller to both sides to form an enclosing structure. The lower end of the dust removal fixture is provided with a dust suction port, which is located at the reverse rotation position of the circular knife.

[0012] In this way, the dust removal fixture and the electrode form a closed cavity. No matter where the dust overflows during the cutting process, it will fall into the dust removal fixture and will not leak out, thus ensuring the dust removal effect under the electrode and ensuring thorough dust removal.

[0013] Preferably, a felt seal is used between the dust removal fixture and the circular knife support roller.

[0014] In this way, the rotation of the circular knife support roller is not affected, and the seal between the dust collection tool and the circular knife support roller is achieved, preventing dust from overflowing.

[0015] Preferably, a 3D camera that can be communicatively connected to the control device is also mounted on the base plate via a camera bracket. The 3D camera is located above the electrode upstream of the motor module and is used to detect whether the electrode is deviating during movement. When the 3D camera detects that the electrode is deviating, it transmits the deviation signal to the control device. The control device controls the motor I to rotate accordingly, thereby driving the slide to follow the deviation displacement.

[0016] In this way, the deviation of the electrode movement is corrected, and the accuracy of the electrode width is ensured at all times.

[0017] Preferably, two slides are provided.

[0018] Preferably, the device further includes a circular cutter motor for driving the circular cutter to rotate, the circular cutter motor being communicatively connected to the control device.

[0019] This ensures that the rotational linear speed is consistent with the movement of the electrode.

[0020] In summary, this utility model has the following beneficial effects: the blade holder and lifting mechanism of the circular blade are designed as an integrated structure. When the circular blade needs to be repaired or replaced, only the circular blade needs to be disassembled, eliminating the need to frequently disassemble the entire blade holder to replace the blade, thus simplifying and speeding up the replacement and maintenance of the blade. Furthermore, the blade holder of the circular blade is also equipped with a blade holder enclosure, and the cutting circular blade adopts a fully enclosed design, leaving only the electrode cutting point exposed. This avoids the problem that the circular blade can easily scratch operators when the electrode breaks or is reconnected during the production process, which is a very dangerous situation.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] Figure 1 This is a perspective view of the electrode cutting device according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the motor module structure according to an embodiment of the present utility model;

[0024] Figure 3 This utility model embodiment is a schematic diagram of a fully enclosed circular knife structure with a knife holder enclosure.

[0025] Figure 4 The present invention is a schematic diagram of the circular knife support roller and dust removal fixture structure.

[0026] In the picture:

[0027] 1. Base plate; 2. Electrode sheet; 3. Feeding roller; 4. Dust removal fixture; 4.1. Felt pressure plate; 4.2. Felt; 4.3. Dust suction port; 5. Circular knife support roller; 6. Discharge support roller; 7. Motor module; 7.1. Slide table; 7.2. Lifting cylinder; 7.3. Lead screw; 7.4. Module motor; 8. Circular knife; 8.1. Circular knife motor; 8.2. Knife holder; 8.3. Knife holder enclosure; 8.4. Circular knife dust suction port; 9. 3D camera; 9.1. Camera bracket. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] like Figure 1-4 As shown, the electrode cutting device proposed in this embodiment includes a base plate 1, a feeding pressure roller 3, a circular knife support roller 5, a discharge support roller 6, and a control device. The electrode 2 is supported parallel to the upper surface of the circular knife support roller 5 by the feeding pressure roller 3 and the discharge support roller 6. It also includes a motor module 7 fixed on the base plate 1 and located above the circular knife support roller 5. The motor module 7 extends along the axial direction of the circular knife support roller 5 and at least one slide table 7.1 is slidably installed on it. The lower end of the slide table 7.1 is equipped with a circular knife 8 for cutting the electrode 2 through a lifting mechanism. The circular knife 8 forms a shearing action with the circular knife support roller 5. The knife holder 8.2 of the circular knife 8 and the lifting mechanism are integrated into one structure, and a knife holder cover 8.3 is also installed on the knife holder 8.2 of the circular knife 8.

[0030] Specifically, in this embodiment, two sliding tables 7.1 are slidably mounted on the motor module 7. Each sliding table 7.1 has a circular blade 8 mounted at its lower end via a lifting mechanism. The two circular blades 8 are independently mounted on the motor module 7, and the distance between the two sliding tables 7.1 is the width of the electrode sheet to be cut, ensuring that the width of the cut electrode sheet remains constant after synchronous operation. The two circular blades 8 respectively form a shearing action with the circular blade support roller 5. The electrode sheet 2 is supported parallel to the upper surface of the circular blade support roller 5 by the feeding pressure roller 3 and the discharge support roller 6. At this time, the circular blades 8 fall down and, together with the circular blade support roller 5, cut the electrode sheet 2 into three equal parts, completing the cutting work of the electrode sheet 2. Of course, the specific number of sliding tables, lifting mechanisms, and circular blades can be installed according to the number of parts required for the electrode sheet to be divided, depending on the actual situation. For example, when the electrode sheet 2 needs to be cut into four equal parts, three sliding tables 7.1, three lifting mechanisms, and three circular blades 8 can be installed.

[0031] Specifically, it also includes a circular knife motor 8.1 for driving the circular knife 8 to rotate. The circular knife motor 8.1 is communicatively connected to the control device. Each of the two circular knives 8 is equipped with its own circular knife motor 8.1 to ensure that the rotational linear speed is consistent with the movement of the electrode 2.

[0032] It should be noted that the electrode 2 is supported by a circular knife support roller 5. The circular knife on the circular knife support roller 5 has a cutting groove. During the cutting process, the circular knife 8 and the cutting groove on the circular knife support roller 5 form a shearing force to cut the electrode 2. During the cutting process, the bottom of the circular knife 8 passes through the electrode 2.

[0033] Thus, the blade holder 8.2 and lifting mechanism of the circular blade 8 are designed as an integrated structure. When the circular blade 8 needs to be repaired or replaced, only the circular blade 8 needs to be disassembled, without the need to frequently disassemble the entire blade holder to replace the blade, which simplifies and speeds up the replacement and maintenance of the blade. In addition, the blade holder 8.2 of the circular blade 8 is also equipped with a blade holder enclosure 8.3. The cutting circular blade adopts a fully enclosed design, leaving only the electrode cutting point exposed. This avoids the problem that the circular blade can easily scratch the operator when the electrode breaks and is reconnected during the production process, which is very dangerous.

[0034] Furthermore, the motor module 7 includes a lead screw 7.3 and a module motor 7.4. The module motor 7.4 is communicatively connected to the control device. The slide table 7.1 is provided with a threaded hole, which is threadedly connected to the lead screw 7.3. When the module motor 7.4 is started, it drives the lead screw 7.3 to rotate. The rotational motion is converted into linear motion, which in turn drives the slide table 7.1 to move along the axial direction of the lead screw 7.3, thereby driving the circular cutter 8 to move.

[0035] Furthermore, the lifting mechanism is configured as a lifting cylinder 7.2, which is communicatively connected to the control device. The upper end of the lifting cylinder 7.2 is fixed to the lower end of the slide table 7.1, and the lower end is equipped with a circular knife 8 via a knife holder 8.2.

[0036] During normal electrode cutting, lateral displacement and deviation of the electrode are unavoidable. To correct this deviation, a 3D camera 9, communicatively connected to the control device, is mounted on the base plate 1 via a camera bracket 9.1. The 3D camera 9 is located above the electrode 2 upstream of the motor module 7 (i.e., in front of the cutting point) and is used to detect whether the electrode 2 is deviating. When the 3D camera 9 detects a deviation in the electrode 2's movement, it transmits the deviation signal to the control device. The control device then controls the module motor 7.4 to rotate accordingly, thereby driving the slide table 7.1 to follow the deviation displacement. This ensures the accuracy of the cut electrode width at all times.

[0037] After the electrode sheet 2 is laid out, the two lifting cylinders 7.2 at the lower end of the two slides 7.1 drive the two circular blades 8 to fall. The control device initiates the cutting command. At this time, the circular blade motor 8.1 and the circular blade support roller 5 rotate simultaneously to achieve cutting. The purpose of installing two movable slides on the motor module 7 is to achieve synchronous movement of the two slides 7.1. When the 3D camera 9 detects a deviation in the movement of the electrode sheet 2, it transmits the deviation signal to the control device. The control device controls the module motor 7.4 to rotate accordingly, thereby driving the slides 7.1 to follow the deviation displacement, ensuring the cutting accuracy of the electrode sheet 2. When the circular blade 8 reaches the end of its service life and needs maintenance, cutting can be stopped. The control device controls the two lifting cylinders 7.2 to lift and detach it from the electrode sheet 2. At this time, the circular blade 8 can be replaced at the workstation without disassembling the blade holder 8.2. After replacement, cutting work can continue. Replacement is time-saving, labor-saving, quick and convenient. At the same time, when the electrode sheet 2 breaks and is reconnected, the lifting cylinders 7.2 can also be controlled at any time to drive the circular blade 8 to detach from the electrode sheet 2 without being affected by the blade holder 8.2.

[0038] In a preferred embodiment, a dust removal fixture 4 is also installed below the circular knife support roller 5. The dust removal fixture 4 extends from below the circular knife support roller 5 to both sides, forming an enclosing structure. The lower end of the dust removal fixture 5 is provided with a dust suction port 4.3, which is located at the reverse rotation position of the circular knife. Specifically, the dust removal fixture 4 is configured as a dust suction hood.

[0039] Furthermore, a felt 4.2 is used to seal the dust removal fixture 4 and the circular knife support roller 5. Specifically, the felt 4.2 is pressed and fixed between the dust removal fixture 4 and the circular knife support roller 5 by the felt pressure plate 4.1. The design of the felt 4.2 does not affect the rotation of the circular knife support roller 5, but can also achieve a seal between the dust removal fixture 4 and the circular knife support roller 5, thus preventing dust from overflowing. In this embodiment, the dust removal fixture 4 has a small gap between its flared opening and the electrode 2. The bottom of the dust removal fixture 4 is designed with a suction port 4.3, which ensures a negative pressure state inside the dust removal fixture 4. When cutting, the dust generated falls directly into the dust removal fixture 4 and is sucked away. The circular knife support roller 5 is used to surround the cutting position in a fully enclosed design. The upper opening of the dust removal fixture 4 is parallel to the electrode 2. At this time, the dust removal fixture 4 and the electrode 2 form a closed cavity. During the cutting process, no matter where the dust overflows from, it will fall into the dust removal fixture 4. The dust will not leak out, ensuring the dust removal effect below the electrode 2 and ensuring thorough dust removal.

[0040] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electrode cutting device, comprising a base plate, a feeding pressure roller, a circular knife support roller, a discharge support roller, and a control device, wherein the electrode is supported parallel to the upper surface of the circular knife support roller by the feeding pressure roller and the discharge support roller, characterized in that, It also includes a motor module fixed on the base plate and located above the circular knife support roller. The motor module extends along the axial direction of the circular knife support roller and has at least one slide table slidably mounted thereon. The lower end of the slide table is equipped with a circular knife for cutting electrode sheets via a lifting mechanism. The knife holder of the circular knife and the lifting mechanism are integrated into one structure, and a knife holder cover is also installed on the knife holder of the circular knife.

2. The electrode cutting equipment according to claim 1, characterized in that, The motor module includes a lead screw and a module motor. The module motor is communicatively connected to the control device. The slide is provided with a threaded hole, which is threadedly connected to the lead screw. When the module motor is started, the lead screw is driven to rotate. The rotational motion is converted into linear motion, which in turn drives the slide to move along the axial direction of the lead screw, thereby moving the circular cutter.

3. The electrode cutting equipment according to claim 1, characterized in that, The lifting mechanism is configured as a lifting cylinder, which is communicatively connected to the control device. The upper end of the lifting cylinder is fixed to the lower end of the slide, and the lower end is equipped with the circular knife via the knife holder.

4. The electrode cutting equipment according to claim 1, characterized in that, A dust removal fixture is also installed below the circular knife support roller. The dust removal fixture extends from below the circular knife support roller to both sides to form an enclosing structure. The lower end of the dust removal fixture is provided with a dust suction port, which is located at the reverse rotation position of the circular knife.

5. The electrode cutting equipment according to claim 4, characterized in that, The dust removal fixture and the circular knife support roller are sealed with felt.

6. The electrode cutting equipment according to claim 2, characterized in that, A 3D camera, communicatively connected to the control device, is also mounted on the base plate via a camera bracket. The 3D camera is located above the electrode upstream of the motor module and is used to detect whether the electrode's movement is off-center. When the 3D camera detects that the electrode's movement is off-center, it transmits the off-center signal to the control device. The control device controls the module motor to rotate accordingly, thereby driving the slide to follow the deviation displacement.

7. The electrode cutting equipment according to claim 2, characterized in that, There are two slides.

8. The electrode cutting equipment according to claim 1, characterized in that, It also includes a circular cutter motor for driving the circular cutter to rotate, the circular cutter motor being communicatively connected to the control device.

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