Continuous die-cutting machine

Abstract

The utility model discloses a continuous die-cutting machine which comprises an unwinding mechanism, a feeding mechanism, a die-cutting mechanism and a winding mechanism, the unwinding mechanism, the feeding mechanism, the die-cutting mechanism and the winding mechanism are sequentially arranged in the moving direction of a material belt, and the unwinding mechanism is used for unwinding a material belt roll and conveying the material belt roll backwards; the feeding mechanism is used for backwards conveying a material belt on a die cutting plane according to a fixed feeding amount; the material belt passes through a die, the die is pressed up and down, and the material belt is cut into a preset shape on a die cutting plane; the winding mechanism is used for winding the cut material belt to form a material belt roll. The material belt is unwound by the unwinding mechanism and fed into the die cutting mechanism through the feeding mechanism to be subjected to die cutting, the material belt obtained after die cutting is wound by the winding mechanism, the winding function of the whole roll of material belt is achieved, and due to the fact that the material belt is not cut off in the die cutting process, the whole material belt is continuous. By using the whole roll of material strip, the efficiency of the subsequent process is improved, and the material and labor cost of the subsequent process can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy battery pole piece die cutting, in particular to a continuous die cutting machine. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development. The electrode assembly of the battery includes a pole piece, the pole piece includes a current collector, an active material layer provided on the surface of the current collector, and a tab provided on the current collector. When the pole piece is made, it is first rolled by a rolling device so that the active material layer on the pole piece can be firmly combined with the current collector, then the tab is cut, and then a wound electrode assembly is prepared by a winding process.

[0003] The existing pole piece die cutting is cut into separate pieces and stacked, which is not convenient for transportation and is not conducive to subsequent automatic processes. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to overcome the above technical deficiencies and provide a continuous die cutting machine to solve the problem of cutting the pole piece into separate pieces in the prior art.

[0005] To achieve the above technical purpose, the technical scheme of the present application is as follows: a continuous die cutting machine, comprising an unwinding mechanism, a feeding mechanism, a die cutting mechanism and a winding mechanism, wherein: the continuous die cutting machine has a die cutting plane; the unwinding mechanism, the feeding mechanism, the die cutting mechanism and the winding mechanism are arranged in sequence along the moving direction of the material belt, and the feeding mechanism and the winding mechanism are both located at the die cutting plane; the unwinding mechanism is used to unwind the material belt roll and feed it backward; the feeding mechanism is used to feed the material belt backward at a fixed feeding amount in the die cutting plane; the die cutting mechanism is detachably installed with a die, the material belt passes through the die, and the die is pressed up and down to cut the material belt into a predetermined shape in the die cutting plane; the winding mechanism is used to wind the cut material belt into a material belt roll.

[0006] Preferably, the feeding mechanism comprises a belt clamping assembly and a first driving assembly, the belt clamping assembly is used to clamp the material belt up and down, the belt clamping assembly is fixed on the first driving assembly, the first driving assembly can move or move in the opposite direction along the advancing direction of the material belt, and the belt clamping assembly has a clamping station and a belt unwinding station in sequence along the advancing direction of the material belt, the distance between the clamping station and the belt unwinding station is equal to the fixed feeding amount.

[0007] Preferably, the continuous die-cutting machine further comprises a first gravity tensioning mechanism arranged between the unwinding mechanism and the feeding mechanism, the first gravity tensioning mechanism comprising a rotating rod which is pressed against the material tape by gravity to tension the material tape between the unwinding mechanism and the feeding mechanism, the rotating rod being movable up and down and having an upper limit position and a lower limit position, the unwinding mechanism unwinding until the rotating rod moves to the lower limit position when the rotating rod moves to the upper limit position.

[0008] Preferably, the continuous die-cutting machine further comprises a second gravity tensioning mechanism arranged between the die-cutting mechanism and the winding mechanism, the second gravity tensioning mechanism having an upper limit position and a lower limit position, the winding mechanism winding when the second gravity tensioning mechanism moves to the lower limit position.

[0009] Preferably, the continuous die-cutting machine further comprises a waste collecting mechanism arranged in the die-cutting plane between the die-cutting mechanism and the winding mechanism, the waste collecting mechanism being used to collect the waste generated by die-cutting of the material tape.

[0010] Preferably, the continuous die-cutting machine further comprises a gap detecting mechanism, the gap detecting mechanism comprising a color marker sensor, a connecting block and a connecting frame, the connecting frame being arranged along the width direction of the material tape, the color marker sensor being connected to the connecting block, the connecting block being movable along the connecting frame, the color marker sensor being used to detect the edge position of the material tape.

[0011] Preferably, the continuous die-cutting machine further comprises a deviation rectifying displacement mechanism, the unwinding mechanism being fixed to the deviation rectifying displacement mechanism, the deviation rectifying displacement mechanism being movable along the width direction of the material tape.

[0012] Preferably, the continuous die-cutting machine further comprises a protective film, the protective film being partially arranged in the die-cutting plane, below the material tape and abutting against the material tape, the protective film being arranged in a ring shape and moving synchronously with the material tape.

[0013] Preferably, the continuous die-cutting machine further comprises a cleaning mechanism arranged below the protective film and used to clean the surface of the protective film.

[0014] Preferably, the feeding mechanism is arranged on the front side or the rear side of the die-cutting mechanism along the moving direction of the material tape.

[0015] Compared with the prior art, the beneficial effects of the present application include: the material belt is unwound by the unwinding mechanism, fed into the die-cutting mechanism by the feeding mechanism for die-cutting, and then wound by the winding mechanism, realizing the winding function of the whole roll of material belt. Since the material belt is not cut during the die-cuting process, the whole material belt is continuous. Using the whole roll of material belt can improve the efficiency of the subsequent process and reduce the material and labor costs of the subsequent process. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the continuous die-cutting machine provided by the present application;

[0017] Figure 2 is a top view of the continuous die-cutting machine provided by the present application;

[0018] Figure 3 is Figure 2 a partial enlarged view of position A in FIG. 1;

[0019] Figure 4 is Figure 2 a partial enlarged view of position B in FIG. 1;

[0020] Figure 5 is a front view of the continuous die-cutting machine provided by the present application;

[0021] Reference signs: 1-unwinding mechanism, 2-feeding mechanism, 3-die-cutting mechanism, 4-winding mechanism, 5-first gravity tensioning mechanism, 6-second gravity tensioning mechanism, 7-waste collecting mechanism, 8-gap detecting mechanism, 9-correcting displacement mechanism, 10-protective film, 11-cleaning mechanism, 12-correcting detecting mechanism, 2a-clip assembly, 2b-first driving assembly, 8a-color mark sensor, 8b-connection block, 8c-connection frame. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0023] Please refer to Figure 1 , Figure 2 and Figure 3 , the present embodiment provides a continuous die-cutting machine, which comprises an unwinding mechanism 1, a feeding mechanism 2, a die-cutting mechanism 3 and a winding mechanism 4.

[0024] The unwinding mechanism 1, the feeding mechanism 2, the die-cutting mechanism 3 and the winding mechanism 4 are sequentially arranged along the material tape moving direction, and the feeding mechanism 2 and the winding mechanism 4 are both located in the die-cutting plane. The unwinding mechanism 1 is used for unwinding the material tape roll and feeding it backward, and the unwinding mechanism 1 comprises a motor and a rod connected with the motor, the material tape roll is installed on the rod, and the unwinding is completed by rotating the rod and the material tape roll through the motor. Preferably, the feeding mechanism 2 can be arranged on the front side or the rear side of the die-cutting mechanism 3 along the material tape moving direction. When the feeding mechanism 2 is arranged on the front side of the die-cutting mechanism 3 along the material tape moving direction, the feeding mechanism 2 feeds the material tape to the die-cutting mechanism 3. When the feeding mechanism 2 is arranged on the rear side of the die-cutting mechanism 3 along the material tape moving direction, the feeding mechanism 2 pulls the material tape to the die-cutting mechanism 3.

[0025] The feeding mechanism 2 is used for feeding the material tape backward in the die-cutting plane according to a fixed feeding amount. Specifically, the feeding mechanism 2 comprises a clamping assembly 2a and a first driving assembly 2b. The clamping assembly 2a is used for clamping the material tape up and down, and the clamping assembly 2a is fixed on the first driving assembly 2b. The first driving assembly 2b can move or reversely move along the material tape advancing direction, and the clamping assembly 2a sequentially has a clamping station and a releasing station along the material tape advancing direction. The distance between the clamping station and the releasing station is equal to the fixed feeding amount. The clamping assembly 2a can clamp the material tape by means of a cylinder driving clamping plate. The first driving assembly 2b generally adopts a combination of a servo motor and a linear module to accurately control the moving position. The clamping assembly 2a clamps the material tape at the clamping station, then the first driving assembly 2b drives the clamping assembly 2a to move the material tape to the releasing station, then the clamping assembly 2a releases the material tape, and the first driving assembly 2b drives the clamping assembly 2a to move to the clamping station, ready for the next feeding.

[0026] The die-cutting mechanism 3 is detachably provided with a die. The detachable structure can be achieved by using the existing structure, and thus the description is omitted here. The material tape passes through the die, and the die is pressed up and down to cut the material tape into a predetermined shape in the die-cutting plane. The die generally adopts a cylinder or a hydraulic cylinder for driving.

[0027] The winding mechanism 4 is used for winding the cut material tape to form a material tape roll. The winding mechanism 4 and the unwinding mechanism 1 only have opposite moving directions. The structure and principle of the winding mechanism 4 are similar to those of the unwinding mechanism 1, and thus the description is omitted here.

[0028] Preferably, the continuous die-cutting machine further comprises a first gravity tensioning mechanism 5. The first gravity tensioning mechanism 5 is arranged between the unwinding mechanism 1 and the feeding mechanism 2. The first gravity tensioning mechanism 5 comprises a rotating rod. The rotating rod is pressed on the material tape by gravity to tension the material tape between the unwinding mechanism 1 and the feeding mechanism 2. The rotating rod can move up and down and has an upper limit position and a lower limit position. When the rotating rod moves to the upper limit position, the unwinding mechanism 1 unwinds. When the rotating rod moves to the lower limit position, the feeding mechanism 2 feeds. The upper limit position and the lower limit position can be detected by limit switches.

[0029] Preferably, the continuous die-cutting machine further comprises a second gravity tensioning mechanism 6, which is arranged between the die-cutting mechanism 3 and the winding mechanism 4, and has an upper limit position and a lower limit position. When the second gravity tensioning mechanism 6 moves to the lower limit position, the winding mechanism 4 winds. The structure and principle of the second gravity tensioning mechanism 6 are similar to those of the first gravity tensioning mechanism 5.

[0030] The continuous die-cutting machine further comprises a waste collecting mechanism 7, which is arranged in the die-cutting plane and between the die-cutting mechanism 3 and the winding mechanism 4, and is used to collect the waste generated by the die-cutting of the material belt. The waste collecting mechanism 4 can use air blowing to blow the waste away from the material belt. A collecting box is arranged below the material belt to collect the falling waste.

[0031] Preferably, the continuous die-cutting machine further comprises a gap detecting mechanism 8, which comprises a color mark sensor 8a, a connecting block 8b, and a connecting frame 8c arranged along the width direction of the material belt. The color mark sensor 8a is connected to the connecting block 8b, and the connecting block 8b is movable along the connecting frame 8c. The color mark sensor 8a is used to detect the coating gap of the material belt. Two color mark sensors 8a are arranged in front of and behind the advancing direction of the material belt. During die-cutting, the die must correspond to the die-cutting of the coating area of the material belt, so the color mark sensor 8a needs to be arranged.

[0032] Preferably, the continuous die-cutting machine further comprises a deviation detecting mechanism 12, which uses an ultrasonic sensor to detect the position of the edge of the material belt. Preferably, the continuous die-cutting machine further comprises a deviation displacement mechanism 9, to which the unwinding mechanism 1 is fixed. The deviation displacement mechanism 9 is movable along the width direction of the material belt. The deviation displacement mechanism 9 can be a combination of a linear module and a servo motor. According to the value measured by the deviation detecting mechanism, the displacement direction and approximate displacement amount of the deviation displacement mechanism 9 are determined.

[0033] Please refer to Figure 4 Preferably, the continuous die-cutting machine further comprises a protective film 10, which is partially arranged in the die-cutting plane and below the material belt and abuts against the material belt. The protective film 10 is arranged in a ring shape. The protective film 10 can be driven to rotate by a plurality of transmission rollers arranged to form a ring. The protective film 10 can protect the material belt from excessive contact with metal. When the cutter works, the protective film 10 protects the cutter from directly cutting the metal. The protective film 10 collects dust generated during the cutting of the material, and then concentrates the dust for cleaning to reduce the pollution of the dust to the material belt. In this embodiment, the protective film 10 can be a PET film.

[0034] Preferably, the continuous die-cutting machine further comprises a cleaning mechanism 11 arranged below the protective film 10 for cleaning the surface of the protective film 10. Generally, the cleaning mechanism 11 can adopt a negative pressure structure similar to a vacuum cleaner to clean the impurities on the surface of the protective film 10.

[0035] In summary, the continuous die-cutting machine provided by the present application realizes the function of winding the whole roll of material belt. Since the material belt is not cut during the die-cutting process, the whole material belt is continuous. The use of the whole roll of material belt can improve the efficiency of the subsequent process and reduce the material and labor costs of the subsequent process.

[0036] The specific embodiments of the present application do not constitute a limitation on the protection scope of the present application. Any various other corresponding changes and modifications made according to the technical concept of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A continuous die cutter for die cutting a web of material, characterized by, The continuous die-cutting machine comprises a unwinding mechanism, a feeding mechanism, a die-cutting mechanism and a winding mechanism, wherein: The continuous die-cuting machine has a die-cutting plane; The unwinding mechanism, the die-cutting mechanism and the winding mechanism are sequentially arranged along the moving direction of the material tape, and the feeding mechanism and the winding mechanism are both located in the die-cutting plane; The unwinding mechanism is used for unwinding the material tape roll and feeding the material tape backward; The feeding mechanism is used for feeding the material tape backward in the die-cutting plane at a fixed feeding amount; The die-cutting mechanism is detachably installed with a die, the material tape passes through the die, the die is pressed from top to bottom, and the material tape is cut into a predetermined shape in the die-cutting plane; The winding mechanism is used for winding the cut material tape to form a material tape roll.

2. A continuous die cutting machine according to claim 1, wherein The feeding mechanism comprises a clamping assembly and a first driving assembly, the clamping assembly is used for clamping the material tape from top to bottom, the clamping assembly is fixed on the first driving assembly, the first driving assembly can move or reversely move along the advancing direction of the material tape, and the clamping assembly sequentially has a clamping station and a releasing station along the advancing direction of the material tape, and the distance between the clamping station and the releasing station is equal to the fixed feeding amount.

3. A continuous die cutting machine according to claim 1, wherein The continuous die-cutting machine further comprises a first gravity tensioning mechanism, the first gravity tensioning mechanism is arranged between the unwinding mechanism and the feeding mechanism, the first gravity tensioning mechanism comprises a rotating rod, the rotating rod is pressed on the material tape by gravity to tension the material tape between the unwinding mechanism and the feeding mechanism, the rotating rod can move up and down and has an upper limit position and a lower limit position, when the rotating rod moves to the upper limit position, the unwinding mechanism unwinds, and when the rotating rod moves to the lower limit position, the feeding mechanism feeds.

4. The continuous die cutter of claim 1, wherein, The continuous die-cutting machine further comprises a second gravity tensioning mechanism, the second gravity tensioning mechanism is arranged between the die-cutting mechanism and the winding mechanism, the second gravity tensioning mechanism has an upper limit position and a lower limit position, and when the second gravity tensioning mechanism moves to the lower limit position, the winding mechanism winds.

5. The continuous die cutter of claim 1, wherein, The continuous die-cutting machine further comprises a waste collecting mechanism, the waste collecting mechanism is arranged in the die-cutting plane and between the die-cutting mechanism and the winding mechanism, and is used for collecting the waste generated by die-cutting the material tape.

6. A continuous die cutting machine according to claim 1, wherein The continuous die-cutting machine further comprises a gap detecting mechanism, the gap detecting mechanism comprises a color mark sensor, a connecting block and a connecting frame, the connecting frame is arranged along the width direction of the material tape, the color mark sensor is connected with the connecting block, the connecting block can move along the connecting frame, and the color mark sensor is used for detecting the edge position of the material tape.

7. A continuous die cutting machine according to claim 1, wherein The continuous die-cutting machine further comprises a deviation rectifying displacement mechanism, the unwinding mechanism is fixed on the deviation rectifying displacement mechanism, and the deviation rectifying displacement mechanism can move along the width direction of the material tape.

8. The continuous die cutter of claim 1, wherein, The continuous die-cutting machine further comprises a protective film, the protective film is partially located in the die-cutting plane, is located below the material tape and abuts against the material tape, the protective film is arranged in a ring shape and moves synchronously with the material tape.

9. A continuous die cutting machine according to claim 8, wherein The continuous die cutting machine further comprises a cleaning mechanism arranged below the protective film for cleaning the surface of the protective film.

10. The continuous die cutter of claim 1, wherein, The feeding mechanism is arranged at the front side or the rear side of the die cutting mechanism along the moving direction of the material belt.

Images