Oil removal mechanism for longitudinal stretching preheating zone

Abstract

The utility model discloses an oil removal mechanism for a longitudinal stretching preheating area, which relates to the technical field of oil removal roller equipment and comprises an oil removal roller, a first cylinder, a support block, a stretching roller, a mounting block, a first gear and a second gear. According to the utility model, the oil removal roller assembly in the stretching area is pressed and meshed with the stretching roller through the oil removal roller, so that the purpose of removing oil is achieved; in order to ensure that the linear speed ratio of the oil removing roller to the stretching roller is kept unchanged, a second gear is mounted on the oil removing roller; similarly, a first gear is also mounted on the stretching roller; most of white oil in the film can be removed in the preheating area, oil bubbles are reduced, and the film can make contact with the roller more evenly. The rotating speed of the oil removing roller is determined by the rotating speed of the stretching roller and the transmission ratio of the first gear to the second gear, the rotating speed ratio of the oil removing roller to the stretching roller is kept unchanged, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of oil removal roller equipment, in particular to an oil removal mechanism for the longitudinal stretching preheating zone. Background Technique

[0002] The lithium-ion conduction ability of the separator is directly related to the overall performance of the lithium-ion battery; therefore, the consistency of the separator performance is crucial. The existing wet separator process: casting sheet → longitudinal stretching → first transverse stretching → extraction → second transverse stretching → winding. If the white oil content in the separator is too high during the longitudinal stretching process, it will lead to uneven contact with the rollers in the preheating area, resulting in some physical property changes during the stretching process of the separator, such as light and dark stripes, etc. Therefore, it is necessary to remove oil from the separator.

[0003] Patent (CN217393084U) discloses an oil removal device for lithium battery separators, including a driving roller, a driven roller parallel to the driving roller, and a transmission mechanism for driving the driven roller and the driving roller to rotate towards each other. It also includes telescopic cylinders symmetrically arranged at both ends of the driven roller; wherein, the telescopic cylinders are parallel to the radial surface of the driving roller, and the telescopic ends of the telescopic cylinders are perpendicularly connected to the ends of the driven roller. In the utility model, the silicone roller and the casting sheet roller are pressed together in parallel to obtain a uniform oil film, ensuring the thickness consistency, improving the phenomena such as oil stains or uneven film surface, reducing the negative impact on the next process, and reducing the product rejection rate. The pressing tightness of the two rollers can be adjusted by the telescopic cylinders, thereby changing the oil layer thickness and being applicable to different working conditions. The variable-frequency drive motor can balance the rotation speeds of the silicone roller and the casting sheet roller, which is more conducive to the generation of a uniform oil film.

[0004] For the oil removal device for separators in the above patent, the driven roller is driven to rotate by the drive motor, so only the rotation speed of the driven roller can be adjusted independently. To ensure the normal movement of the separator between the driving roller and the driven roller, it is also necessary to calculate and adjust the rotation speed of the driving roller separately, and the operation is relatively complex. Content of the Utility Model

[0005] The purpose of the utility model is to provide an oil removal mechanism for the longitudinal stretching preheating zone to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions: A degreasing mechanism for the longitudinal stretching preheating zone, comprising two side plates, a degreasing roller assembly and a stretching roller assembly. The degreasing roller assembly includes a degreasing roller and a support frame. At both ends of the outer wall of the support frame, first cylinders are symmetrically provided. At both ends of the degreasing roller, support blocks are symmetrically provided with rotational connections. The output end of the first cylinder is fixedly connected to the outer wall of the support block. The stretching roller assembly includes a stretching roller. At both ends of the stretching roller, mounting blocks are symmetrically provided with rotational connections. The mounting blocks are fixedly connected to the side plates. At one end of the outer part of the stretching roller, a first gear is provided. At one end of the outer wall of the degreasing roller, a second gear meshing with the first gear is provided. The stretching roller and the degreasing roller are parallel to each other.

[0007] Further, the first gear is slidably sleeved on the outer wall of the stretching roller. Horizontally provided on the outer wall of the mounting block is a second cylinder. The output end of the second cylinder is provided with a connecting block. An annular groove matching the connecting block is opened on the outer wall of the first gear. A plurality of second gears are provided. The outer diameters of two adjacent second gears are different.

[0008] Further, a support ring is provided on the inner wall of the annular groove. A hole groove matching the support ring is opened on the outer wall of the connecting block.

[0009] Further, the cross-section of the connecting block is an isosceles trapezoid structure. The cross-section of the annular groove is an isosceles trapezoid structure. The cross-section of the support ring is an isosceles trapezoid structure. The cross-section of the hole groove is an isosceles trapezoid structure.

[0010] Further, a plurality of sliders are provided on the inner wall of the first gear. A chute matching the slider is opened on the outer wall of the stretching roller. The chute is parallel to the second cylinder.

[0011] Further, a sliding plate is vertically provided on the side of the outer wall of the support block away from the degreasing roller. A guide rail matching the sliding plate is provided on the outer wall of the support frame.

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

[0013] 1. In this utility model, by setting up an oil removal roller, a first cylinder, a support block, a stretching roller, a mounting block, a first gear and a second gear, in the stretching area, the oil removal roller assembly realizes the pressing and meshing with the stretching roller through the oil removal roller to achieve the purpose of oil removal; the first cylinder used is a double-electrically controlled cylinder, which can ensure slow and smooth movement during pressing; in order to ensure that the linear speed ratio between the oil removal roller and the stretching roller remains unchanged, a second gear is installed on the oil removal roller and connected to the shaft head of the oil removal roller through a tensioning sleeve; similarly, a first gear is also installed on the stretching roller; similarly, both ends of the shaft head of the oil removal roller are fixed at one end and floating at the other end, reducing the axial force on the bearing; in the preheating area, most of the white oil in the film can be removed, reducing the generation of oil bubbles and enabling the film to contact the roller more evenly; each oil removal roller in the oil removal roller assembly is designed to be controlled by a separate solenoid valve, which can meet the different usage requirements of the process.

[0014] 2. In this utility model, the support block rotates and supports both ends of the oil removal roller, and the mounting block rotates and supports both ends of the stretching roller. The first cylinder makes a telescopic movement, which can drive the support block to make a linear movement, thereby adjusting the distance between the oil removal roller and the stretching roller, ensuring that the oil removal roller and the stretching roller cooperate to remove oil from the diaphragm. During the adjustment of the distance between the oil removal roller and the stretching roller, the distance between the first gear and the second gear is also adjusted to ensure the meshing of the first gear and the second gear. During the rotational movement of the stretching roller, the first gear rotates synchronously with the stretching roller. The first gear drives the second gear to rotate, and the oil removal roller rotates with the second gear. The rotational speed of the oil removal roller is determined by the rotational speed of the stretching roller and the transmission ratio of the first gear and the second gear, ensuring that the rotational speed ratio between the oil removal roller and the stretching roller remains unchanged, and the operation is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the present utility model with the side plates removed;

[0018] Figure 3 is the present utility model Figure 2 structural schematic diagram from another angle;

[0019] Figure 4 is the structural schematic diagram of the oil removal roller assembly and the stretching roller assembly of the present utility model;

[0020] Figure 5It is a schematic structural view of the oil removal roller assembly of the present utility model;

[0021] Figure 6 It is another schematic structural view of the oil removal roller of the present utility model;

[0022] Figure 7 It is the front view of another structure of the stretching roller assembly of the present utility model;

[0023] Figure 8 It is the present utility model Figure 7 The enlarged schematic view at position A in;

[0024] In the figure: 1, side plate; 2, oil removal roller; 3, support frame; 4, first cylinder; 5, support block; 6, stretching roller; 7, mounting block; 8, first gear; 9, second gear; 10, second cylinder; 11, connecting block; 12, annular groove; 13, support ring; 14, hole groove; 15, chute. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1 - 8 , the present utility model provides a technical solution: a longitudinal stretching preheating area oil removal mechanism, including two side plates 1, an oil removal roller assembly and a stretching roller assembly. The oil removal roller assembly includes an oil removal roller 2 and a support frame 3. At both ends of the outer wall of the support frame 3, first cylinders 4 are symmetrically arranged. At both ends of the oil removal roller 2, support blocks 5 connected by rotation are symmetrically arranged. The output end of the first cylinder 4 is fixedly connected to the outer wall of the support block 5. The stretching roller assembly includes a stretching roller 6. At both ends of the stretching roller 6, mounting blocks 7 connected by rotation are symmetrically arranged. The mounting blocks 7 are fixedly connected to the side plates 1. At one end of the outer part of the stretching roller 6, a first gear 8 is arranged. At one end of the outer wall of the oil removal roller 2, a second gear 9 meshing with the first gear 8 is arranged. The stretching roller 6 and the oil removal roller 2 are parallel to each other; the first gear 8 is slidably sleeved on the outer wall of the stretching roller 6. On the horizontal outer wall of the mounting block 7, a second cylinder 10 is arranged. The output end of the second cylinder 10 is provided with a connecting block 11. An annular groove 12 matching the connecting block 11 is opened on the outer wall of the first gear 8. A plurality of second gears 9 are arranged, and the outer diameters of adjacent two second gears 9 are different.

[0027] The inner wall of the annular groove 12 is provided with a support ring 13. A hole groove 14 matching the support ring 13 is formed in the outer wall of the connection block 11. The support ring 13 provides annular support for the connection block 11 inside the annular groove 12. The hole groove 14 provides a movement space for the support ring 13 on the connection block 11, ensuring that when the support ring 13 rotates, the hole groove 14 guides the support ring 13. The cross-section of the connection block 11 is an isosceles trapezoid structure, the cross-section of the annular groove 12 is an isosceles trapezoid structure, the cross-section of the support ring 13 is an isosceles trapezoid structure, and the cross-section of the hole groove 14 is an isosceles trapezoid structure. Designing the cross-sections of the connection block 11 and the annular groove 12 as isosceles trapezoid structures enables the connection block 11 to drive the first gear 8 to perform horizontal adjustment movement while ensuring the rotational movement of the first gear 8. Designing the cross-sections of the hole groove 14 and the support ring 13 as isosceles trapezoid structures forms a first-stage annular sliding limit between the support ring 13 and the hole groove 14, and a second-stage annular sliding limit between the connection block 11 and the annular groove 12, which can further improve the movement stability of the first gear 8. A plurality of sliders are provided on the inner wall of the first gear 8. A chute 15 matching the sliders is formed in the outer wall of the stretching roller 6. The chute 15 is parallel to the second cylinder 10. When the first gear 8 is horizontally adjusted, the sliders slide along the chute 15, which can effectively improve the stability of the horizontal adjustment of the first gear 8 and ensure that the first gear 8 rotates along with the stretching roller 6.

[0028] A sliding plate is vertically provided on the outer wall of the support block 5 away from the oil removal roller 2. A guide rail matching the sliding plate is provided on the outer wall of the support frame 3. The cooperation between the sliding plate and the guide rail realizes the guiding process of the support block 5, making the movement of the support block 5 safer and more stable.

[0029] The working principle of the present utility model:

[0030] Refer to the attached specification Figures 1 - 8, the utility model is provided with an oil removal roller 2, a first cylinder 4, a support block 5, a stretching roller 6, a mounting block 7, a first gear 8 and a second gear 9. The support block 5 rotates and supports both ends of the oil removal roller 2, and the mounting block 7 rotates and supports both ends of the stretching roller 6. The first cylinder 4 makes a telescopic movement, which can drive the support block 5 to make a linear movement, thereby adjusting the distance between the oil removal roller 2 and the stretching roller 6, ensuring that the oil removal roller 2 and the stretching roller 6 cooperate to remove oil from the diaphragm. During the adjustment of the distance between the oil removal roller 2 and the stretching roller 6, the distance between the first gear 8 and the second gear 9 is also adjusted to ensure the meshing of the first gear 8 and the second gear 9. During the rotational movement of the stretching roller 6, the first gear 8 rotates synchronously with the stretching roller 6. The first gear 8 drives the second gear 9 to rotate. The oil removal roller 2 rotates with the second gear 9. The rotation speed of the oil removal roller 2 is determined by the rotation speed of the stretching roller 6 and the transmission ratio of the first gear 8 and the second gear 9, ensuring that the rotation speed ratio of the oil removal roller 2 and the stretching roller 6 remains unchanged, and the operation is convenient and fast;

[0031] In the stretching area, the oil removal roller assembly realizes the pressing and meshing with the stretching roller through the oil removal roller 2 to achieve the purpose of oil removal; the first cylinder used is a double-electrically controlled cylinder, which can ensure that the action during pressing is slow and smooth; in order to ensure that the linear speed ratio of the oil removal roller 2 and the stretching roller 6 remains unchanged, a second gear 9 is installed on the oil removal roller 2 and is connected to the shaft head of the oil removal roller 2 through a shrink disc; similarly, a first gear 8 is also installed on the stretching roller 6; similarly, both ends of the shaft head of the oil removal roller 2 are fixed at one end and floating at the other end, reducing the axial force on the bearing; in the preheating area, most of the white oil in the film can be removed, reducing the generation of oil bubbles and making the contact between the film and the roller more uniform; each oil removal roller 2 in the oil removal roller assembly is designed to be controlled by a separate solenoid valve, which can meet the different usage requirements of the process;

[0032] The first gear 8 is slidably sleeved on the outer wall of the stretching roller 6, so that the position of the first gear 8 on the surface of the stretching roller 6 is adjustable. The second cylinder 10 is adjusted to stretch. The second cylinder 10 drives the connecting block 11 to make a horizontal adjustment. The connecting block 11 drives the first gear 8 to make a horizontal adjustment through the annular groove 12, so that the first gear 8 can be aligned and meshed with the second gear 9 at different positions, realizing the adjustment of the transmission ratio of the first gear 8 and the second gear 9, and further realizing the adjustment of the rotation speed ratio of the oil removal roller 2 and the stretching roller 6, and the operation is convenient and fast.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A longitudinal stretching preheating zone degreasing mechanism, comprising two side plates (1), a degreasing roller assembly and a stretching roller assembly, characterized in that: The degreasing roller assembly comprises a degreasing roller (2) and a support frame (3), wherein first cylinders (4) are symmetrically arranged at both ends of an outer wall of the support frame (3), rotatably connected support blocks (5) are symmetrically arranged at both ends of the degreasing roller (2), and the output end of the first cylinder (4) is fixedly connected to the outer wall of the support block (5), and the stretching roller assembly comprises a stretching roller (6), wherein rotatably connected mounting blocks (7) are symmetrically arranged at both ends of the stretching roller (6), and the mounting blocks (7) are fixedly connected to the side plate (1), and a first gear (8) is arranged at one end of the outer wall of the degreasing roller (2), and a second gear (9) meshing with the first gear (8) is arranged, and the stretching roller (6) and the degreasing roller (2) are parallel to each other.

2. The longitudinal stretching preheating zone oil removal mechanism according to claim 1, characterized in that: The first gear (8) is slidably sleeved on the outer wall of the stretching roller (6); a second cylinder (10) is horizontally arranged on the outer wall of the mounting block (7); a connecting block (11) is arranged at the output end of the second cylinder (10); an annular groove (12) matching the connecting block (11) is opened on the outer wall of the first gear (8); a plurality of second gears (9) are arranged, and the outer diameters of two adjacent second gears (9) are different.

3. The longitudinal stretching preheating zone oil removal mechanism according to claim 2, characterized in that: The inner wall of the annular groove (12) is provided with a support ring (13), and the outer wall of the connecting block (11) is provided with a hole groove (14) matching the support ring (13).

4. The longitudinal stretching preheating zone oil removal mechanism according to claim 3, characterized in that: The cross section of the connecting block (11) is an isosceles trapezoidal structure, the cross section of the annular groove (12) is an isosceles trapezoidal structure, the cross section of the supporting ring (13) is an isosceles trapezoidal structure, and the cross section of the hole groove (14) is an isosceles trapezoidal structure.

5. The longitudinal stretching preheating zone deoiling mechanism according to claim 2, characterized in that: The inner wall of the first gear (8) is provided with a plurality of sliding blocks, and the outer wall of the stretching roller (6) is provided with a sliding groove (15) matching the sliding blocks, and the sliding groove (15) and the second cylinder (10) are parallel to each other.

6. The longitudinal stretching preheating zone oil removal mechanism according to claim 1, characterized in that: A sliding plate is vertically provided on the outer wall of the support block (5) away from the oil removal roller (2), and a guide rail matching the sliding plate is provided on the outer wall of the support frame (3).

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