Unreeling mechanism of lithium battery diaphragm coating machine

Abstract

The utility model belongs to the field of unwinding mechanisms, and particularly relates to an unwinding mechanism of a lithium battery diaphragm coating machine, which comprises a fixing frame, a first control box arranged at the bottom of the fixing frame, an unwinding turret component arranged on the front side of the first control box, a second control box mounted on the fixing frame, and a guide wheel component arranged on the front side of the second control box. The front side of the second control box is provided with an upper horizontal pushing assembly and a lower horizontal pushing assembly, the upper horizontal pushing assembly and the lower horizontal pushing assembly comprise guide rails and horizontal pushing bases, the two guide rails are installed on the front side of the second control box, the two horizontal pushing bases are installed on the front side of the second control box in a sliding mode, the horizontal pushing bases are arranged on the corresponding guide rails in a sliding and sleeving mode, and the second control box is provided with a driving mechanism. The material receiving assembly can make contact with a small-tension film face at a constant speed, damage to a film material and fluctuation of equipment tension control are reduced, the material receiving pressing roller vertically presses the center of a roll core, stress is even, damage to the film material caused by inconsistent roll diameters of film rolls and inconsistent pressure points is avoided, and the material receiving success rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of unwinding mechanisms, in particular to an unwinding mechanism of a lithium battery diaphragm coating machine. Background Art

[0002] Common coating products for lithium battery separator ceramic coating include single side (A or B side) one-time coating, A side one-time coating + B side one-time coating, single side (A or B side) two-time coating, A side one-time coating + B side two-time coating, etc. Among them, double-layer coating machine + turning frame solution is usually used to solve the problem of single side (A or B side) two-time coating. Sometimes, the equipment factory does not have such coating machine, and can only use single-sided coating machine to coat once and then take the material roll from winding to unwinding, change the direction of the film and coat it again. At this time, the unwinding upper and lower cutting knife structure is required.

[0003] The material receiving action of the traditional unwinding mechanism is as follows: the turret flips into position and stops - the cylinder swing arm of the material receiving assembly is pushed out to the working position and stops - the turret performs secondary film roll positioning - the material receiving pressure roller presses on the film roll and the chopper cuts it off - the material receiving assembly returns to complete the material receiving action.

[0004] When the traditional structure uses the upper and lower cutter splicing components to change the film penetration direction, the upper and lower film penetration paths need to be stopped for film penetration, resulting in low efficiency in product production and energy waste; the cylinder pushes the splicing component, the air pressure and speed are not stable enough. For the thin and low-tension operating conditions of the diaphragm, the film surface will have a large shake when the guide roller on the splicing group contacts the turret, which is easy to produce wrinkles and diagonal lines, causing damage to the film material; the traditional structure of the swing arm type cylinder splicing component The pressure of the splicing roller cannot press the pressure vertically at the center of the roll core because the diameter range of the film roll is not fixed, resulting in uneven force when the film roll is spliced, and the film material is easily squeezed and damaged, and the splicing fails. Therefore, we proposed a lithium battery diaphragm coating machine unwinding mechanism to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a reeling mechanism for a lithium battery diaphragm coating machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A reeling mechanism for a lithium battery diaphragm coating machine comprises a fixed frame, a control box 1 is arranged at the bottom of the fixed frame, a reeling turret assembly is arranged at the front side of the control box 1, a control box 2 is installed on the fixed frame, a guide wheel assembly is arranged at the front side of the control box 2, and an upper push assembly and a lower push assembly are arranged at the front side of the control box 2;

[0008] The upper push assembly and the lower push assembly include guide rails and push seats. Two guide rails are installed on the front side of the control box 2. Two push seats are slidably installed on the front side of the control box 2, and the push seats are slidably sleeved on the corresponding guide rails. A driving mechanism is provided on the control box 2, and the driving mechanism is connected to the push seats. A material receiving assembly and a cutting knife assembly are provided on the push seat.

[0009] Preferably, the unwinding turret assembly includes a turret, a winding core A and a winding core B. The turret is rotatably mounted on the front side of the control box 1, and the winding core A and the winding core B are arranged on the front side of the turret.

[0010] Preferably, the driving mechanism includes a gear and a rack seat, the rack seat is installed on the horizontal push seat, and the front side of the control box is provided with a gear meshing with the rack seat.

[0011] Preferably, a rotating motor is fixedly installed in the second control box, and a motor transmission shaft fixedly connected to the gear is fixedly installed on the output shaft of the rotating motor.

[0012] Preferably, the material receiving assembly includes a push rod motor, a connecting seat and a material receiving pressure roller. The push rod motor is installed on the flat push seat. The connecting seat is installed on the output shaft of the push rod motor, and the connecting seat is provided with a material receiving pressure roller.

[0013] Preferably, the cutter assembly includes a push rod motor 2 and a chopper, the push rod motor 2 is mounted on a flat push seat, and the chopper is mounted on an output shaft of the push rod motor 2.

[0014] Preferably, a mounting hole is provided on the rack seat, a bolt is provided in the mounting hole, and the rack seat is fixedly connected to the push seat by the bolt.

[0015] Beneficial effects of the utility model:

[0016] When the film roll of core B is almost used up, the turret flips core A to the original working horizontal position of core B. At this time, no secondary positioning action is required. The push seat can be pushed out to the working position at a uniform speed through the cooperation of the rotating motor, gear and rack seat. At this time, the push seat can drive the material splicing assembly and the cutter assembly to move to the working position. If core B is the upper film feeder and core A is also the upper film feeder, there is no need to switch the upper and lower cutter assemblies; if core A is the lower film feeder, the upper and lower cutters can be switched with one button, and there is no need to stop the machine and re-change the film path. At this time, the material splicing roller on the material splicing assembly is pressed on core A, and the chopper on the cutter assembly cuts off the film material of core B. At this time, core A starts to discharge the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of an unwinding mechanism of a lithium battery separator coating machine proposed by the utility model;

[0018] Figure 2This is a schematic structural diagram of part A of an unwinding mechanism of a lithium battery diaphragm coating machine proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of part B of an unwinding mechanism of a lithium battery diaphragm coating machine proposed in the utility model.

[0020] In the figure: 1. fixed frame; 2. control box 1; 3. unwinding turret assembly; 301. turret; 302. winding core A; 303. winding core B; 4. control box 2; 5. guide wheel assembly; 6. upper push assembly; 7. lower push assembly; 671. guide rail; 672. push seat; 8. rack seat; 9. motor drive shaft; 10. gear; 111. push rod motor 1; 12. connecting seat; 113. material receiving pressure roller; 121. push rod motor 2; 122. chopper. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-3 A reeling mechanism for a lithium battery diaphragm coating machine comprises a fixed frame 1, a control box 2 is provided at the bottom of the fixed frame 1, a reeling turret assembly 3 is provided on the front side of the control box 2, a control box 4 is installed on the fixed frame 1, a guide wheel assembly 5 is provided on the front side of the control box 4, and an upper push assembly 6 and a lower push assembly 7 are provided on the front side of the control box 4, the upper push assembly 6 and the lower push assembly 7 comprise a guide rail 671 and a push seat 672, two guide rails 671 are installed on the front side of the control box 4, two push seats 672 are slidably installed on the front side of the control box 4, and the push seats 672 are slidably sleeved on the corresponding guide rails 671, a driving mechanism is provided on the control box 4, the driving mechanism is connected to the push seat 672, and a material receiving assembly and a cutting knife assembly are provided on the push seat 672.

[0023] In this embodiment, the unwinding turret assembly 3 includes a turret 301, a core A302 and a core B303. The turret 301 is rotatably installed on the front side of the control box 2, and the cores A302 and B are arranged on the front side of the turret 301. When the film roll of the core B303 is almost finished, the turret 301 flips the core A302 to the original working horizontal position of the core B303. At this time, no secondary positioning action is required, and the horizontal material connection does not require the turret to position twice, thereby reducing the chance of problems.

[0024] In this embodiment, the driving mechanism includes a gear 10 and a rack seat 8. The rack seat 8 is installed on the push seat 672. The front side of the control box 1 2 is provided with a gear 10 meshing with the rack seat 8. A rotating motor is fixedly installed in the control box 2 4. A motor transmission shaft 9 fixedly connected to the gear 10 is fixedly installed on the output shaft of the rotating motor. Through the motor bevel gear mechanism, the material receiving assembly contacts the small tension membrane surface at a uniform speed, thereby reducing damage to the membrane material and fluctuations in the tension control of the equipment.

[0025] In this embodiment, the material receiving assembly includes a push rod motor 1, a connecting seat 12 and a material receiving pressure roller 113. The push rod motor 111 is installed on the push seat 672. The connecting seat 12 is installed on the output shaft of the push rod motor 1. The connecting seat 12 is provided with a material receiving pressure roller 113. The cutter assembly includes a push rod motor 2 121 and a chopper 122. The push rod motor 2 121 is installed on the push seat 672. The chopper 122 is installed on the output shaft of the push rod motor 2 121. If the film is fed from the upper core B303 and the film is fed from the upper core A302, there is no need to switch the upper and lower cutter assemblies. If the film is fed from the lower core A302, the upper and lower cutters can be switched with one click without stopping the machine to re-change the film path. At this time, the material receiving pressure roller 113 on the material receiving assembly is pressed onto the film core A302, and the chopper 122 on the cutter assembly cuts off the film material of the film core B303.

[0026] In this embodiment, a mounting hole is opened on the rack seat 8, and a bolt is arranged in the mounting hole. The rack seat 8 is fixedly connected to the push seat 672 by the bolt, so that the rack seat 8 can be easily disassembled and assembled by the bolt.

[0027] Working principle: When the film roll of core B303 is almost used up, the turret 301 flips the core A302 to the original working horizontal position of core B303. At this time, no secondary positioning action is required. The cooperation of the rotating motor, gear 10 and rack seat 8 can push the push seat 672 to the working position at a uniform speed. At this time, the push seat 672 can drive the material receiving assembly and the cutter assembly to move to the working position. If core B303 is the upper film feed and core A302 is also the upper film feed, there is no need to switch the upper and lower cutter assemblies; if core A302 is the lower film feed, the upper and lower cutters can be switched with one button, and there is no need to stop the machine and re-change the film path. At this time, the material receiving pressure roller 113 on the material receiving assembly is pressed on core A302, and the chopper 122 on the cutter assembly cuts off the film material of core B303. At this time, core A302 starts to discharge the material.

[0028] The above is a detailed introduction to the unwinding mechanism of a lithium battery diaphragm coating machine provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A lithium battery separator coating machine unwinding mechanism, characterized in that: The invention comprises a fixed frame (1), a control box 1 (2) is provided at the bottom of the fixed frame (1), a reeling turret assembly (3) is provided at the front side of the control box 1 (2), a control box 2 (4) is installed on the fixed frame (1), a guide wheel assembly (5) is provided at the front side of the control box 2 (4), and an upper push assembly (6) and a lower push assembly (7) are provided at the front side of the control box 2 (4); The upper push assembly (6) and the lower push assembly (7) comprise guide rails (671) and push seats (672). The front side of the control box 2 (4) is provided with two guide rails (671). The front side of the control box 2 (4) is provided with two push seats (672) which are slidably mounted. The push seats (672) are slidably sleeved on the corresponding guide rails (671). The control box 2 (4) is provided with a driving mechanism which is connected to the push seats (672). The push seats (672) are provided with a material receiving assembly and a cutting knife assembly.

2. The unwinding mechanism of a lithium battery separator coating machine according to claim 1, characterized in that: The unwinding turret assembly (3) comprises a turret (301), a winding core A (302) and a winding core B (303); the turret (301) is rotatably mounted on the front side of a control box (2); and the winding core A (302) and the winding core B (303) are arranged on the front side of the turret (301).

3. The unwinding mechanism of a lithium battery separator coating machine according to claim 1, characterized in that: The driving mechanism comprises a gear (10) and a rack seat (8), wherein the rack seat (8) is mounted on a horizontal push seat (672), and a gear (10) meshing with the rack seat (8) is provided on the front side of the control box 1 (2).

4. The unwinding mechanism of a lithium battery separator coating machine according to claim 3, characterized in that: A rotating motor is fixedly installed in the second control box (4), and a motor transmission shaft (9) fixedly connected to a gear (10) is fixedly installed on the output shaft of the rotating motor.

5. The unwinding mechanism of a lithium battery separator coating machine according to claim 1, characterized in that: The material receiving assembly comprises a push rod motor (111), a connecting seat (12) and a material receiving pressure roller (113); the push rod motor (111) is mounted on a flat push seat (672); a connecting seat (12) is mounted on an output shaft of the push rod motor (111); and a material receiving pressure roller (113) is provided on the connecting seat (12).

6. The unwinding mechanism of a lithium battery separator coating machine according to claim 1, characterized in that: The cutter assembly comprises a push rod motor 2 (121) and a chopper (122). The push rod motor 2 (121) is mounted on a flat push seat (672), and the chopper (122) is mounted on the output shaft of the push rod motor 2 (121).

7. The unwinding mechanism of the lithium battery separator coating machine according to claim 3, characterized in that: The rack seat (8) is provided with a mounting hole, in which a bolt is provided, and the rack seat (8) is fixedly connected to the push seat (672) via the bolt.

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