Quick response system for suspension roller of single-face and double-face battery pole piece roller press

Abstract

The utility model discloses a quick response system for a suspension roller of a single-face and double-face battery pole piece roller press, and belongs to the technical field of roller presses. The device comprises a movable roller, and suspension roller hydraulic devices and main servo hydraulic cylinders are arranged at the bottoms of the two ends of the movable roller; the suspension roller hydraulic device comprises a main path and at least two induction branches. Each induction branch is connected with the main path through a corresponding hydraulic synchronous motor; wherein the main path comprises an electromagnetic reversing valve and a hydraulic oil pump; the induction branch comprises a suspension roller hydraulic cylinder and an electromagnetic stop valve. According to the utility model, the length of a transition area during switching of the single-sided and double-sided battery pole pieces is reduced, the waste of pole piece resources is reduced, the rolling force of the single-sided and double-sided battery pole pieces can be more accurately controlled, the uniformity of the compaction ratio of the single-sided and double-sided battery pole pieces is ensured, and a guarantee is provided for improving the quality of battery products.

Description

Technical Field

[0001] The utility model relates to the technical field of roller presses, in particular to a suspension roller pressing fast response system for a single-sided or double-sided battery pole piece roller press. Background Art

[0002] Battery pole pieces are one of the main performance components of batteries. 3C batteries are mainly obtained by rolling single-sided and double-sided battery pole piece rolling mills. The production process of 3C batteries has very high precision requirements on the thickness of single-sided and double-sided battery pole pieces, that is, pole pieces of the same thickness should have uniform thickness deviations, and fast transition is also required when switching between pole pieces of different thicknesses. When switching between single-sided and double-sided pole pieces, the transition zone is very short, which requires the roller press to respond very quickly when switching between single-sided and double-sided pole pieces. The currently commonly used single-sided and double-sided battery pole piece rolling machines have a long switching time when switching between single-sided and double-sided pole pieces, which is bound to cause a long single-sided and double-sided transition zone, resulting in pole piece waste. The rolling pressures of single-sided and double-sided pole pieces are different, resulting in different compaction ratios of single-sided and double-sided battery pole pieces, affecting battery quality. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a fast response system of a single-sided and double-sided battery pole sheet roller press when switching between single-sided pole sheets and double-sided pole sheets, so that the thrust of the hydraulic cylinder can be fully applied to the pole sheets.

[0004] The utility model adopts the following technical solutions to achieve the above technical effects:

[0005] A single-sided and double-sided battery pole sheet roller press suspension roller quick response system, comprising a movable roller 3, wherein the bottom of both ends of the movable roller 3 are provided with a suspension roller hydraulic device 1 and a main servo hydraulic cylinder 2;

[0006] The suspension roller hydraulic device 1 includes a main circuit and at least two induction branches; each induction branch is connected to the main circuit through a corresponding hydraulic synchronous motor; the main circuit includes an electromagnetic reversing valve 15 and a hydraulic oil pump 12; the induction branch includes a suspension roller hydraulic cylinder 20 and an electromagnetic stop valve 17;

[0007] The suspension roller hydraulic cylinder 20 is located at one side of the main servo hydraulic cylinder 2, and its oil inlet is connected to one end of the electromagnetic stop valve 17 through the explosion-proof valve 18, and the other end of the electromagnetic stop valve 17 is connected to the output end of the hydraulic synchronous motor 16; a displacement sensor 22 is provided in the suspension roller hydraulic cylinder 20, and a pressure sensor 19 is provided at the oil inlet position; the oil outlet of the suspension roller hydraulic cylinder 20 is connected to one of the branch ends of the electromagnetic reversing valve 15;

[0008] The main port of the electromagnetic reversing valve 15 is connected to the oil tank through the hydraulic oil pump 12, and the hydraulic oil pump 12 is driven by the servo motor 13; the other branch end of the electromagnetic reversing valve 15 is connected to the input end of the hydraulic synchronous motor.

[0009] Furthermore, an accumulator 14 is provided on the pipeline between the hydraulic oil pump 12 and the electromagnetic reversing valve 15 to ensure that the working speed of the suspension roller hydraulic cylinder is faster than that of the main servo oil cylinder.

[0010] Furthermore, it also includes a control unit, which is respectively connected to the displacement sensor, the pressure sensor and the servo motor to form an automatic control system.

[0011] Furthermore, it also includes a frame 6 and a fixed roller 5; the fixed roller and the movable roller are both located in the frame 6, wherein the fixed roller is located directly above the movable roller, and an online adjustment wedge assembly is provided between the bearing seats of the two;

[0012] The servo hydraulic cylinder is located directly below the movable roller 3, and its driving end is connected to the bottom of the bearing seat of the movable roller.

[0013] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0014] The suspension roller hydraulic cylinder of the utility model is installed between the frame and the movable roller. When the single-sided and double-sided pole pieces are rolled, the suspension roller hydraulic cylinder responds quickly and works faster than the main servo oil cylinder. At this time, the movable roller reaches the designated rolling position of the online adjustment wedge assembly under the action of the suspension roller hydraulic device. At this time, the suspension roller hydraulic device adjusts the output thrust so that the thrust output by the four suspension roller hydraulic cylinders balances the gravity of the movable roller and maintains balance.

[0015] At this time, the main servo cylinder only moves in a no-load state, and the response is faster than the speed of pushing the active roller. When the main servo cylinder reaches the specified rolling position, the output rolling force is equal to the rolling force received during the rolling of the single-sided and double-sided pole pieces.

[0016] The utility model can have a faster response speed when the roller press is rolling single-sided and double-sided battery pole pieces and when the single-sided and double-sided battery pole pieces are switched, and can reduce the length of the transition zone when the single-sided and double-sided battery pole pieces are switched, reducing the waste of pole piece resources, and can more accurately control the rolling force of the single-sided and double-sided battery pole pieces, ensuring the uniformity of the compaction ratio of the single-sided and double-sided battery pole pieces, providing a guarantee for improving the quality of battery products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 This is a system hydraulic principle diagram of an embodiment of the utility model.

[0019] In the figure: 1.7. Suspension roller hydraulic device 2. Main servo hydraulic cylinder 3. Movable roller 4. Online adjustment wedge assembly 5. Fixed roller 6. Frame. 11. Oil tank 12. Hydraulic oil pump 13. Servo motor 14. Accumulator 15. Solenoid reversing valve; 16. Synchronous hydraulic motor 17. Solenoid stop valve 18. Explosion-proof valve 19. Pressure sensor 20. Suspension roller hydraulic cylinder 21. Overflow valve 22. Displacement sensor. DETAILED DESCRIPTION

[0020] Below, the utility model is further described in conjunction with the accompanying drawings.

[0021] Reference Figure 1 and Figure 2 This embodiment includes a frame, a fixed roller, a movable roller, two servo hydraulic cylinders located at both ends of the movable roller for driving the movable roller to move, and a suspension roller hydraulic device for balancing the weight of the movable roller.

[0022] The suspension roller hydraulic device drives the hydraulic pump to supply oil through the servo motor. The hydraulic system is equipped with an accumulator to ensure that the working speed of the suspension roller hydraulic cylinder is faster than that of the main servo oil cylinder. The hydraulic synchronous motor is used to ensure the synchronization of the displacement output of the four suspension roller hydraulic cylinders. At the same time, the rod cavity of the hydraulic cylinder is equipped with a pressure sensor to ensure the accuracy and balance of the output thrust of the four suspension roller hydraulic cylinders and to alarm in dangerous situations. The suspension roller hydraulic device controls the motion of the four suspension hydraulic cylinders through the main servo hydraulic motion controller.

[0023] The beneficial effect of adopting the above technical solution is that: the suspension roller hydraulic cylinder of the utility model is installed between the frame and the movable roller. When the single-sided and double-sided pole pieces are rolled, the suspension roller hydraulic cylinder responds quickly and works faster than the main servo oil cylinder. At this time, the movable roller reaches the designated rolling position of the online adjustment wedge assembly under the action of the suspension roller hydraulic device. At this time, the suspension roller hydraulic device adjusts the output thrust so that the thrust output by the four suspension roller hydraulic cylinders balances the gravity of the movable roller and maintains balance.

[0024] At this time, the main servo cylinder only moves in a no-load state, and the response is faster than the speed of pushing the active roller. When the main servo cylinder reaches the specified rolling position, the output rolling force is equal to the rolling force received during the rolling of the single-sided and double-sided pole pieces.

[0025] The utility model can have a faster response speed when the roller press is rolling single-sided and double-sided battery pole pieces and when the single-sided and double-sided battery pole pieces are switched, and can reduce the length of the transition zone when the single-sided and double-sided battery pole pieces are switched, reducing the waste of pole piece resources, and can more accurately control the rolling force of the single-sided and double-sided battery pole pieces, ensuring the uniformity of the compaction ratio of the single-sided and double-sided battery pole pieces, providing a guarantee for improving the quality of battery products.

[0026] like Figure 1 and Figure 2 As shown, a suspension roller quick response system of a single-sided and double-sided battery pole sheet roller press comprises a suspension roller hydraulic device 1, a main servo hydraulic cylinder 2, a movable roller 3, an online adjustable wedge assembly 4, a fixed roller 5 and a frame 6. The suspension roller hydraulic device comprises an oil tank 11, a hydraulic oil pump 12, a servo motor 13, an accumulator 14, an electromagnetic reversing valve 15; a synchronous hydraulic motor 16, an electromagnetic stop valve 17, an explosion-proof valve 18, a pressure sensor 19, a suspension roller hydraulic cylinder 20, a relief valve 21, and a displacement sensor 22. The suspension roller hydraulic device drives the hydraulic oil pump 12 to supply oil through the servo motor 13. The accumulator 14 is installed on the hydraulic system to ensure that the working speed of the suspension roller hydraulic cylinder is faster than that of the main servo oil cylinder. The synchronization of the displacement output of the four suspension roller hydraulic cylinders is ensured by the hydraulic synchronous motor 16 and the displacement sensor 22. At the same time, the rod cavity of the hydraulic cylinder is equipped with a pressure sensor 19 to ensure the accuracy and balance of the output thrust of the four suspension roller hydraulic cylinders and to alarm in dangerous situations. The suspension roller hydraulic device uses the main servo hydraulic motion controller to accurately control the displacement and pressure of the four suspension hydraulic cylinders.

[0027] Specifically, the suspension roller hydraulic cylinder feeds back the displacement signal to the control unit through the displacement sensor, the control unit controls the servo motor through the driver, the servo motor drives the hydraulic oil pump to control the extension and retraction of the hydraulic cylinder, and at the same time, the suspension roller hydraulic cylinder feeds back the pressure signal to the control unit through the pressure sensor, the control unit controls the servo motor through the driver, the servo motor drives the rotation of the hydraulic oil pump to control the accurate pressure output of the hydraulic cylinder.

[0028] In this embodiment, a suspended roller hydraulic device is newly added between the main machine frame and the movable roller, so that the movable roller can respond quickly and be in place when the roller press rolls the single-sided and double-sided battery pole pieces, and the thrust of the main servo cylinder can be fully applied to the single-sided and double-sided pole pieces, which can reduce the length of the transition zone when switching between single-sided and double-sided pole pieces, reduce the waste of single-sided and double-sided pole pieces resources, and at the same time, more accurately control the rolling force of the single-sided and double-sided pole pieces, thereby ensuring the uniformity of the compaction ratio of the single-sided and double-sided battery pole pieces, and providing a guarantee for improving the quality of battery products.

[0029] It should be understood that the above description of the specific implementation methods of this patent is only an exemplary description listed to facilitate ordinary technicians in the field to understand the patent scheme, and does not imply that the scope of protection of this patent is limited to these individual examples. Ordinary technicians in this field can fully understand the technical scheme of this patent and, without any creative work, obtain more specific implementation methods by combining technical features, replacing some technical features, adding more technical features, etc. to the examples listed in this patent. All these specific implementation methods are within the scope of the claims of this patent. Therefore, these new specific implementation methods should also be within the scope of protection of this patent.

[0030] In addition, for the purpose of simplifying the description, this patent may not list some common specific implementation schemes, which are naturally conceivable to ordinary technicians in this field after understanding the technical solution of this patent. Obviously, these solutions should also be included in the scope of protection of this patent.

Claims

1. A single-sided or double-sided battery pole piece roller press suspension roller quick response system, comprising a movable roller (3), characterized in that: The bottoms of both ends of the movable roller (3) are provided with a suspension roller hydraulic device (1) and a main servo hydraulic cylinder (2); The suspension roller hydraulic device (1) comprises a main circuit and at least two induction branches; each induction branch is connected to the main circuit via a corresponding hydraulic synchronous motor; the main circuit comprises an electromagnetic reversing valve (15) and a hydraulic oil pump (12); the induction branch comprises a suspension roller hydraulic cylinder (20) and an electromagnetic stop valve (17); The suspension roller hydraulic cylinder (20) is located on one side of the main servo hydraulic cylinder (2), and its oil inlet is connected to one end of the electromagnetic stop valve (17) through an explosion-proof valve (18), and the other end of the electromagnetic stop valve (17) is connected to the output end of the hydraulic synchronous motor (16); a displacement sensor (22) is provided in the suspension roller hydraulic cylinder (20), and a pressure sensor (19) is provided at the oil inlet position; the oil outlet of the suspension roller hydraulic cylinder (20) is connected to one of the branch ends of the electromagnetic reversing valve (15); The main port of the electromagnetic reversing valve (15) is connected to the oil tank through a hydraulic oil pump (12), and the hydraulic oil pump (12) is driven by a servo motor (13); the other branch end of the electromagnetic reversing valve (15) is connected to the input end of the hydraulic synchronous motor.

2. The single-sided and double-sided battery pole piece roller press suspension roller quick response system according to claim 1 is characterized in that: An accumulator (14) is also provided on the pipeline between the hydraulic oil pump (12) and the electromagnetic reversing valve (15) to ensure that the working speed of the suspension roller hydraulic cylinder is faster than that of the main servo oil cylinder.

3. The single-sided and double-sided battery pole piece roller press suspension roller quick response system according to claim 1 is characterized in that: The device also includes a control unit, which is respectively connected to the displacement sensor, the pressure sensor and the servo motor to form an automatic control system.

4. The single-sided and double-sided battery pole piece roller press suspension roller quick response system according to claim 1, characterized in that: It also includes a frame (6) and a fixed roller (5); the fixed roller and the movable roller are both located in the frame (6), wherein the fixed roller is located directly above the movable roller, and an online adjustment wedge assembly is provided between the bearing seats of the two rollers; The main servo hydraulic cylinder is located directly below the movable roller (3), and its driving end is connected to the bottom of the bearing seat of the movable roller.

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