Mechanism for prolonging reaction time during coating process of battery pole piece

Abstract

The utility model discloses a mechanism for prolonging the reaction time of a battery pole piece in a coating process, and belongs to the technical field of pole piece production. The number of the limiting frames, the number of the hydraulic cylinders and the number of the bearing seats are all two. Wherein the two ends of the roller are limited in the limiting frames through the corresponding bearing seats, vertical limiting grooves are formed in the inner sides of the limiting frames, and the bearing seats are restrained in the limiting grooves and can move up and down along the limiting grooves; the hydraulic cylinder is located at the bottom of the limiting frame. The telescopic end of the hydraulic cylinder is connected with the bottom of the bearing seat and supports the bearing seat. Bosses are arranged on the inner sides of the limiting frames; each boss is provided with an elastic structure, and the top of each elastic structure abuts against the lower surface of the corresponding bearing seat. According to the utility model, the load of the main roller on the main hydraulic cylinder caused by the gravity of the main roller when the main roller rapidly ascends and descends can be effectively reduced, so that the reaction speed of the main roller when the battery pole piece is rolled and intermittently coated is improved, and the compaction ratio of different areas of the battery pole piece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pole piece production, in particular to a mechanism for improving the reaction time of a battery pole piece in a coating process. Background Art

[0002] In the current roller press industry, the requirements for the single- and double-sided compaction ratio of battery electrodes in the intermittent coating process are getting higher and higher, and the current solutions are mostly to improve the response speed of the hydraulic cylinder and replace expensive high-performance valve groups in large quantities, but there is very little optimization of the up and down floating resistance of the main roller during the rolling process. Utility Model Content

[0003] In view of this, the utility model provides a mechanism for improving the reaction time of the battery pole piece in the coating process. It is applied to the production process of the battery pole piece in the intermittent coating process, and can effectively reduce the load on the main hydraulic cylinder caused by the main roller's own gravity when the main roller rises and falls rapidly, thereby improving the reaction speed of the main roller when rolling the battery pole piece in the intermittent coating process, and at the same time improving the compaction ratio of different areas of the battery pole piece.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A mechanism for improving the reaction time of a battery pole piece during coating process, comprising a hydraulic cylinder, a roller, a bearing seat and a limit frame; two limit frames, two hydraulic cylinders and two bearing seats are provided; wherein both ends of the roller are limited in the limit frame by corresponding bearing seats, a vertical limit groove is provided on the inner side of the limit frame, the bearing seat is constrained in the limit groove and can move up and down along the limit groove;

[0006] The hydraulic cylinder is located at the bottom of the limit frame, and the telescopic end of the hydraulic cylinder is connected to the bottom of the bearing seat and supports the bearing seat; the inner side of the limit frame is provided with a boss; each boss is installed with an elastic structure, and the top of the elastic structure is against the lower surface of the bearing seat;

[0007] The elastic structure includes a disc spring base, a disc spring pressure plate and a disc spring; a guide hole I is provided on the disc spring base, and a disc spring guide rod is provided on the disc spring pressure plate; the disc spring pressure plate is located directly above the disc spring base, and the disc spring guide rod is located in the guide hole I and can move freely along the guide hole; the disc spring is located between the disc spring pressure plate and the disc spring base, and the disc spring is mounted on the disc spring guide rod.

[0008] Furthermore, the limiting frame includes a base and support rods on both sides, the two support rods are parallel and facing each other, the hydraulic cylinder and the support rods are fixedly connected to the upper surface of the base, and the hydraulic cylinder is located between the two support rods.

[0009] Furthermore, a pressure plate guide rod is provided on the disc spring pressure plate, and a guide hole II is provided on the disc spring base; the pressure plate guide rod and the guide hole II are opposite to each other, and the pressure plate guide rod can slide freely along the guide hole II.

[0010] Furthermore, the pressure plate guide rod and the disc spring guide rod are both connected to the disc spring pressure plate via locking bolts.

[0011] Furthermore, the disc spring base and the disc spring pressure plate are connected by semi-threaded bolts; the disc spring base is provided with corresponding threaded holes, and the disc spring pressure plate is provided with connecting holes corresponding to the semi-threaded bolts.

[0012] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0013] The utility model can effectively reduce the load on the lifting and lowering of the main hydraulic cylinder caused by the main roller's own gravity and inertia when the main roller rises and falls rapidly, thereby improving the pressure provided by the main hydraulic cylinder when the main roller rolls the battery pole piece in the intermittent coating process to fully act on the stage piece, and at the same time reduce the resistance in the stroke of the main hydraulic cylinder to increase the reaction speed, thereby improving the compaction ratio of the battery pole piece in the intermittent coating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0015] Figure 2 It is a diagram of the elastic structure of an embodiment of the utility model.

[0016] Figure 3 yes Figure 2 Schematic cross-section of .

[0017] Figure 4 It is a reference relationship diagram of the spring height of the elastic structure and various items.

[0018] In the figure: 1. limit frame, 2. bearing seat, 3. elastic structure, 4. hydraulic cylinder, 5. boss, 6. roller, 3-1. disc spring pressure plate, 3-2. semi-threaded bolt, 3-3. disc spring, 3-4. pressure plate guide rod, 3-5. disc spring base, 3-6. disc spring guide rod, 3-7. guide hole I, 3-8. guide hole II. DETAILED DESCRIPTION

[0019] Below, the utility model is further described in conjunction with the accompanying drawings.

[0020] Reference Figures 1 to 3, this embodiment 1 includes a hydraulic cylinder, a roller, a bearing seat and a limit frame; the limit frame, hydraulic cylinder and bearing seat are each provided with two; wherein both ends of the roller are limited in the limit frame by corresponding bearing seats, a vertical limit groove is provided on the inner side of the limit frame, the bearing seat is constrained in the limit groove, and can move up and down along the limit groove;

[0021] The hydraulic cylinder is located at the bottom of the limit frame, and the telescopic end of the hydraulic cylinder is connected to the bottom of the bearing seat and supports the bearing seat; the inner side of the limit frame is provided with a boss; each boss is installed with an elastic structure, and the top of the elastic structure is against the lower surface of the bearing seat;

[0022] The elastic structure includes a disc spring base, a disc spring pressure plate and a disc spring; a guide hole I is provided on the disc spring base, and a disc spring guide rod is provided on the disc spring pressure plate; the disc spring pressure plate is located directly above the disc spring base, and the disc spring guide rod is located in the guide hole I and can move freely along the guide hole; the disc spring is located between the disc spring pressure plate and the disc spring base, and the disc spring is mounted on the disc spring guide rod.

[0023] The limiting frame comprises a base and support rods on both sides, the two support rods are parallel and facing each other, the hydraulic cylinder and the support rods are both fixedly connected to the upper surface of the base, and the hydraulic cylinder is located between the two support rods.

[0024] The disc spring pressure plate is also provided with a pressure plate guide rod, and the disc spring base is provided with a guide hole II; the pressure plate guide rod and the guide hole II are opposite to each other, and the pressure plate guide rod can slide freely along the guide hole II. The pressure plate guide rod and the disc spring guide rod are both connected to the disc spring pressure plate through locking bolts.

[0025] The disc spring group is used to store elastic potential energy; the disc spring base is mounted on the frame of the roller press by means of bolts; the disc spring guide rod and the pressure plate guide rod jointly ensure that the disc spring only moves up and down when it is compressed and expanded; after adjustment, tighten the locking bolt (half-threaded bolt).

[0026] The spring compression is given according to the weight of the lower roller system and the required height. The idea of ​​calculating the spring compression is to ensure that the gap between the upper and lower rollers is just equal to the thickness of the pole piece when the spring is compressed to the lowest point, and the upward thrust that the disc spring can provide when the lower roller system is lifted to the highest point (depending on the specific elastic body selection and layout space).

[0027] Reference Figure 4 ,in,

[0028] H: Total height of disc spring when not compressed

[0029] X: Spring height after disc spring compression device is assembled

[0030] h: Theoretical compressed height of the roller system under disc spring load

[0031] x: Theoretical displacement of the roller system under the disc spring load after the disc spring compression device is assembled. Note: x must be equal to the thickness of the pole piece material, and the greater the difference between x and h, the better the effect (x<h).

[0032] After adjusting the spring height, place the lower roller on the four devices so that the gap between the lower roller and the upper roller can just pass through the thickest part of the pole piece. After the adjustment is completed, lock the spring height limit bolt to prevent the spring from exceeding the working range.

[0033] Example 2. On the premise of Example 1, the strong elastic component can be replaced with an excitation coil, and the control logic can be added to make the lower roller float completely in the air to offset the gravity of the main roller, and actively drive the main roller to float up and down according to the position of the main roller, thereby further reducing the negative impact of gravity and inertia when the main roller floats up and down.

Claims

1. A mechanism for improving the reaction time of a battery pole piece during coating process, comprising a hydraulic cylinder, a roller, a bearing seat and a limit frame; characterized in that; There are two of each of the limit frame, hydraulic cylinder and bearing seat; wherein both ends of the roller are limited in the limit frame by corresponding bearing seats, a vertical limit groove is provided on the inner side of the limit frame, the bearing seat is constrained in the limit groove and can move up and down along the limit groove; The hydraulic cylinder is located at the bottom of the limit frame, and the telescopic end of the hydraulic cylinder is connected to the bottom of the bearing seat and supports the bearing seat; the inner side of the limit frame is provided with a boss; each boss is installed with an elastic structure, and the top of the elastic structure is against the lower surface of the bearing seat; The elastic structure includes a disc spring base, a disc spring pressure plate and a disc spring; a guide hole I is provided on the disc spring base, and a disc spring guide rod is provided on the disc spring pressure plate; the disc spring pressure plate is located directly above the disc spring base, and the disc spring guide rod is located in the guide hole I and can move freely along the guide hole; the disc spring is located between the disc spring pressure plate and the disc spring base, and the disc spring is mounted on the disc spring guide rod.

2. A mechanism for improving the reaction time of a battery electrode during coating process according to claim 1, characterized in that: The limiting frame comprises a base and support rods on both sides, the two support rods are parallel and facing each other, the hydraulic cylinder and the support rods are both fixedly connected to the upper surface of the base, and the hydraulic cylinder is located between the two support rods.

3. A mechanism for improving the reaction time of a battery electrode during coating process according to claim 1, characterized in that: The disc spring pressure plate is also provided with a pressure plate guide rod, and the disc spring base is provided with a guide hole II; the pressure plate guide rod and the guide hole II are opposite to each other, and the pressure plate guide rod can slide freely along the guide hole II.

4. A mechanism for improving the reaction time of a battery electrode during coating process according to claim 3, characterized in that: The pressure plate guide rod and the disc spring guide rod are both connected to the disc spring pressure plate through locking bolts.

5. The mechanism for improving the reaction time of a battery electrode during coating process according to claim 1, characterized in that: The disc spring base and the disc spring pressure plate are connected by semi-threaded bolts; the disc spring base is provided with corresponding threaded holes, and the disc spring pressure plate is provided with connecting holes corresponding to the semi-threaded bolts.

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