A constant tension traction mechanism for lithium battery diaphragm production line

Abstract

This utility model relates to the field of lithium battery separator traction technology and discloses a constant tension traction mechanism for a lithium battery separator production line. It includes a housing assembly and a power control assembly mounted on the housing assembly. A main fixing assembly and an auxiliary fixing assembly are installed between the housing assembly and the power control assembly. A detachable roller assembly is installed between the main fixing assembly and the auxiliary fixing assembly. The total number of the main fixing assembly, the detachable roller assembly and the auxiliary fixing assembly is five. The three assemblies in the middle are connected to the power component in the power control assembly. The power control assembly controls the servo motor through pressure sensor feedback to control tension fluctuations, thereby improving the accuracy and stability of braking. At the same time, the detachable roller assembly, in conjunction with the snap-fit ​​connection between other components, can realize the replacement operation of the traction roller to adapt to different separator widths.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery separator traction technology, and more specifically to a constant tension traction mechanism for a lithium battery separator production line. Background Technology

[0002] With the rapid development of new energy vehicles, energy storage systems, and other fields, higher requirements have been placed on the performance, safety, and lifespan of lithium batteries. As one of the key components of a battery, the quality of the lithium battery separator directly affects the overall performance of the battery. Therefore, high-performance production equipment is needed to ensure the quality of the separator. The constant tension traction mechanism has emerged to meet the lithium battery industry's demand for high-quality separators. Constant tension traction can maintain a uniform stress state on the separator during the production process, avoiding problems such as uneven separator thickness and inconsistent porosity caused by uneven tension. This ensures the quality stability of the separator and improves the safety and performance of lithium batteries. It is of great significance for ensuring product quality, improving production efficiency, and adapting to the needs of industry development.

[0003] Existing traction mechanisms cannot precisely control diaphragm tension. In the production, processing, and handling of diaphragms, precise control of diaphragm tension directly affects the quality, performance, and subsequent use of the diaphragm, which undoubtedly brings certain challenges to related production work.

[0004] In addition, the existing traction mechanism's structural design makes it difficult to easily replace the rotating rollers, lacking flexibility and versatility, which to some extent affects production efficiency and economic benefits.

[0005] To address the aforementioned issues, this application provides a constant tension traction mechanism for a lithium battery separator production line. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a constant tension traction mechanism for a lithium battery separator production line to solve the problems existing in the background art.

[0007] This utility model provides the following technical solution: a constant tension traction mechanism for a lithium battery separator production line, including a housing assembly and a power control assembly installed on the housing assembly. A main fixing assembly and an auxiliary fixing assembly are installed between the housing assembly and the power control assembly. A detachable roller assembly is installed between the main fixing assembly and the auxiliary fixing assembly. The total number of the main fixing assembly, the detachable roller assembly and the auxiliary fixing assembly is five. The three assemblies located in the middle are connected to the power component in the power control assembly.

[0008] Preferably, the housing assembly includes an outer shell, a first mounting plate, and a second mounting plate, wherein the outer shell and the first mounting plate are fixedly mounted on the left and right sides of the outer shell.

[0009] Preferably, the power control component includes a servo motor, a universal coupling, an alloy bearing, and a pressure sensor. The number of housings is three, and their drive shafts are connected to three detachable roller assemblies located in the middle via a main fixing assembly. The servo motor is fixedly mounted on the left side wall of the housing. The servo motor drive shaft passes through the side wall of the housing and is fixedly sleeved on one end of the universal coupling. The other end of the universal coupling is fixedly sleeved with an alloy bearing. The alloy bearing is fixedly snapped onto the first and second mounting plates at a position where it is rotatably connected to components in the main fixing assembly and the detachable roller assembly. A pressure sensor is fixedly mounted on the outer ring of the alloy bearing. At this time, the servo motor drive shaft drives the main fixing assembly and the detachable roller assembly mounted on the main fixing assembly to rotate via the universal coupling. Simultaneously, the detachable roller assembly is compressed under the tension of the diaphragm, and the pressure is transmitted to the alloy bearings at both ends through the main fixing assembly and the auxiliary fixing assembly. The pressure sensor obtains the current pressure value through the compression between the alloy bearing and the housing assembly and sends a signal to an external controller. After combining with an algorithm, the rotational speed of the servo motor is controlled.

[0010] Preferably, the main fixing assembly includes a first connecting rod, a second connecting rod, a limiting ring, a first retaining sleeve, a first retaining ring, and a first spring. The main fixing assembly is disposed between the first mounting plate and the detachable roller assembly. One end of the first connecting rod is fixedly sleeved on an alloy bearing, and the other end is rotatably engaged with the second connecting rod. The limiting ring is fixedly sleeved on the outer ring of the right end of the second connecting rod. The first retaining sleeve is movably sleeved on the outside of the first and second connecting rods. Multiple first retaining rings are sleeved on the outer ring of the right end of the first retaining sleeve. The first spring is disposed between the left alloy bearing and the first retaining ring and is sleeved on the outside of the first retaining sleeve. When the first retaining sleeve is pushed, the first retaining ring compresses the first spring, so that the first retaining sleeve is no longer sleeved at the connection between the first and second connecting rods. At this time, the detachable roller assembly can rotate along the engaging axis of the first and second connecting rods.

[0011] Preferably, the detachable roller assembly includes a vertical groove rod, a sliding sleeve, and a traction roller. The two ends of the vertical groove rod are respectively fixedly sleeved with a main fixing component and an auxiliary fixing component. The vertical groove rod is slidably sleeved on the vertical groove rod, and the traction roller is fixedly sleeved on the outside of the sliding sleeve. At this time, the sliding sleeve and traction roller of different specifications can be pulled out along the central axis of the vertical groove rod and replaced.

[0012] Preferably, the auxiliary fixing assembly includes a third connecting rod, a fourth connecting rod, a second retaining sleeve, a second retaining ring, and a second spring. The third connecting rod is fixedly sleeved on the end of the vertical groove rod near the second mounting plate. One end of the fourth connecting rod is engaged with the third connecting rod, and the other end is fixedly sleeved on the inner ring of the alloy bearing. The second retaining sleeve is movably sleeved on the outside of the third and fourth connecting rods. The second retaining ring is fixedly sleeved on the outside of the end of the second retaining sleeve near the vertical groove rod. The second spring is positioned between the second retaining ring and the right-side alloy bearing, sleeved on the outside of the second retaining sleeve. When the second retaining sleeve is pushed, the second retaining ring compresses the second spring, so that the second retaining sleeve is no longer sleeved at the connection between the third and fourth connecting rods.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] The power control component uses a pressure sensor to control the servo motor, thereby controlling tension fluctuations and improving braking accuracy and stability. Meanwhile, the detachable roller assembly, in conjunction with the snap-fit ​​connections between other components, allows for the replacement of the traction roller to accommodate different diaphragm widths. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the power control component of this utility model.

[0017] Figure 3 This is a partial structural schematic diagram of the present invention.

[0018] Figure 4 For the present utility model Figure 3 Schematic diagram of the structure at point A in the middle.

[0019] Figure 5 For the present utility model Figure 3 Schematic diagram of the structure at point B.

[0020] The attached figures are labeled as follows: 1. Housing assembly; 101. Outer shell; 102. First mounting plate; 103. Second mounting plate; 2. Power control assembly; 201. Servo motor; 202. Universal coupling; 203. Alloy bearing; 204. Pressure sensor; 3. Main fixing assembly; 301. First connecting rod; 302. Second connecting rod; 303. Limiting ring; 304. First ferrule; 305. First retaining ring; 306. Spring No. 1; 4. Detachable roller assembly; 401. Vertical groove rod; 402. Sliding sleeve; 403. Traction roller; 5. Auxiliary fixing assembly; 501. Third connecting rod; 502. Fourth connecting rod; 503. Second ferrule; 504. Second retaining ring; 505. Spring No. 2. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The constant tension traction mechanism of the lithium battery separator production line involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Reference Figure 1 and Figure 2 This utility model provides a constant tension traction mechanism for a lithium battery separator production line, including a housing assembly 1 and a power control assembly 2 installed on the housing assembly 1. A main fixing assembly 3 and an auxiliary fixing assembly 5 are installed between the housing assembly 1 and the power control assembly 2. A detachable roller assembly 4 is installed between the main fixing assembly 3 and the auxiliary fixing assembly 5. The total number of the main fixing assembly 3, the detachable roller assembly 4 and the auxiliary fixing assembly 5 is five. The three in the middle are connected to the power component in the power control assembly 2.

[0023] Reference Figure 1 The housing assembly 1 includes an outer shell 101, a first mounting plate 102 and a second mounting plate 103, wherein the outer shell 101 and the first mounting plate 102 are fixedly mounted on the left and right sides of the outer shell 101.

[0024] Reference Figure 1 and Figure 2 The power control component 2 includes a servo motor 201, a universal coupling 202, an alloy bearing 203, and a pressure sensor 204. There are three housings 101, and their drive shafts are connected to three detachable roller assemblies 4 located in the middle via a main fixing component 3. The servo motor 201 is fixedly installed on the left side wall of the housing 101. The drive shaft of the servo motor 201 passes through the side wall of the housing 101 and is fixedly sleeved on one end of the universal coupling 202. The other end of the universal coupling 202 is fixedly sleeved on the alloy bearing 203. The alloy bearing 203 is fixedly snapped onto the first mounting plate 102 and the second mounting plate 103, and is connected to the main fixing component 3 and the detachable rollers. At the rotational connection position of the components in component 4, a pressure sensor 204 is fixedly installed on the outer ring of the alloy bearing 203. At this time, the drive shaft of the servo motor 201 drives the main fixed component 3 and the detachable roller component 4 installed on the main fixed component 3 to rotate through the universal coupling 202. At the same time, the detachable roller component 4 is squeezed by the tension of the diaphragm and transmitted to the alloy bearings 203 at both ends through the main fixed component 3 and the auxiliary fixed component 5. The pressure sensor 204 obtains the current pressure value through the squeezing action between the alloy bearing 203 and the housing component 1 and sends a signal to the external controller. After combining the algorithm, the rotation speed of the servo motor 201 is controlled.

[0025] Reference Figure 3 and Figure 4 The main fixing assembly 3 includes a first connecting rod 301, a second connecting rod 302, a limiting ring 303, a first retaining sleeve 304, a first retaining ring 305, and a first spring 306. The main fixing assembly 3 is disposed between the first mounting plate 102 and the detachable roller assembly 4. One end of the first connecting rod 301 is fixedly fitted with a metal bearing 203, and the other end is rotatably engaged with the second connecting rod 302. The limiting ring 303 is fixedly fitted onto the outer ring of the right end of the second connecting rod 302. The first retaining sleeve 304 is movably fitted onto the first connecting rod 301 and the second connecting rod 302. 2. On the outer side, multiple first retaining rings 305 are sleeved on the outer ring of the right end of the first retaining sleeve 304. A first spring 306 is set between the left alloy bearing 203 and the first retaining rings 305 and sleeved on the outer side of the first retaining sleeve 304. At this time, the first retaining sleeve 304 is pushed, and then the first spring 306 is compressed through the first retaining rings 305, so that the first retaining sleeve 304 is no longer sleeved at the connection of the first connecting rod 301 and the second connecting rod 302. This allows the detachable roller assembly 4 to rotate along the locking shaft of the first connecting rod 301 and the second connecting rod 302.

[0026] Reference Figure 1 and Figure 5 The detachable roller assembly 4 includes a vertical groove rod 401, a sliding sleeve 402, and a traction roller 403. The two ends of the vertical groove rod 401 are respectively fixedly sleeved with the main fixing assembly 3 and the auxiliary fixing assembly 5. The vertical groove rod 401 is slidably sleeved on the vertical groove rod 401. The traction roller 403 is fixedly sleeved on the outside of the sliding sleeve 402. At this time, the sliding sleeve 402 and the traction roller 403 of different specifications can be pulled out along the central axis of the vertical groove rod 401 and replaced.

[0027] Reference Figure 3-5 The auxiliary fixing component 5 includes a third connecting rod 501, a fourth connecting rod 502, a second retaining sleeve 503, a second retaining ring 504, and a second spring 505. The third connecting rod 501 is fixedly sleeved on one end of the vertical groove rod 401 near the second mounting plate 103. One end of the fourth connecting rod 502 is engaged with the third connecting rod 501, and the other end is fixedly sleeved on the inner ring of the alloy bearing 203. The second retaining sleeve 503 is movably sleeved on the outside of the third connecting rod 501 and the fourth connecting rod 502. The second retaining ring 504 is fixedly sleeved on the outside of the end of the second retaining sleeve 503 near the vertical groove rod 401. The second spring 505 is positioned between the second retaining ring 504 and the right-side alloy bearing 203 and sleeved on the outside of the second retaining sleeve 503. When the second retaining sleeve 503 is pushed, the second retaining ring 504 compresses the second spring 505, so that the second retaining sleeve 503 is no longer sleeved at the connection between the third connecting rod 501 and the fourth connecting rod 502.

[0028] The working principle of this utility model is as follows: In use, the diaphragm is wound between the traction rollers 403. The servo motor 201 drives the main fixed assembly 3 and the detachable roller assembly 4 mounted on the main fixed assembly 3 to rotate through the universal coupling 202. At the same time, the detachable roller assembly 4 is squeezed by the tension of the diaphragm, and the pressure is transmitted to the alloy bearings 203 at both ends through the main fixed assembly 3 and the auxiliary fixed assembly 5. The pressure sensor 204 obtains the current pressure value through the squeezing action between the alloy bearing 203 and the housing assembly 1, and sends a signal to the external controller. After combining with the algorithm, the rotation speed of the servo motor 201 is controlled, thereby controlling the tension fluctuation. The universal coupling 202 can ensure the stable transmission of the servo motor 201 without affecting the force on the alloy bearing 203, so that the pressure... Force sensor 204 can acquire accurate data of the current tension and accurately control the tension change. When it is necessary to traction diaphragms of different width specifications, push the second sleeve 503, and then compress the second spring 505 through the second retaining ring 504, so that the second sleeve 503 is no longer fitted at the connection of the third connecting rod 501 and the fourth connecting rod 502. At the same time, push the first sleeve 304, and then compress the first spring 306 through the first retaining ring 305, so that the first sleeve 304 is no longer fitted at the connection of the first connecting rod 301 and the second connecting rod 302. At this time, the detachable roller assembly 4 rotates along the locking axis of the first connecting rod 301 and the second connecting rod 302 and makes it perpendicular to the bottom surface of the outer shell 101, so that the sliding sleeve 402 and the traction roller 403 of different specifications can be pulled out and replaced.

[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0030] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery diaphragm production line constant tension traction mechanism, comprising a shell assembly (1) and a power control assembly (2) mounted on the shell assembly (1), a main fixed assembly (3) and an auxiliary fixed assembly (5) are mounted between the shell assembly (1) and the power control assembly (2), a detachable roller assembly (4) is mounted between the main fixed assembly (3) and the auxiliary fixed assembly (5), the main fixed assembly (3), the detachable roller assembly (4) and the auxiliary fixed assembly (5) constitute five whole bodies, the three whole bodies in the middle are connected with the power components in the power control assembly (2) for transmission, characterized in that: The housing assembly (1) includes a housing (101), a first mounting plate (102), and a second mounting plate (103). The power control assembly (2) includes a servo motor (201), a universal coupling (202), an alloy bearing (203), and a pressure sensor (204). The housing (101) and the first mounting plate (102) are fixedly mounted on the left and right sides of the housing (101). There are three housings (101), and their drive shafts are connected to three detachable roller assemblies (4) located in the middle via a main fixing assembly (3). The motor (201) is fixedly installed on the left side wall of the outer casing (101). The drive shaft of the servo motor (201) passes through the side wall of the outer casing (101) and is fixedly sleeved on one end of the universal coupling (202). The other end of the universal coupling (202) is fixedly sleeved with an alloy bearing (203). The alloy bearing (203) is fixedly snapped onto the first mounting plate (102) and the second mounting plate (103) at the position where it is rotatably connected to the components in the main fixing assembly (3) and the detachable roller assembly (4). A pressure sensor (204) is fixedly installed on the outer ring of the alloy bearing (203).

2. The constant tension traction mechanism for a lithium battery separator production line according to claim 1, characterized in that: The main fixing assembly (3) includes a first connecting rod (301), a second connecting rod (302), a limiting ring (303), a first retaining sleeve (304), a first retaining ring (305), and a first spring (306). The main fixing assembly (3) is disposed between the first mounting plate (102) and the detachable roller assembly (4). One end of the first connecting rod (301) is fixedly sleeved on the alloy bearing (203), and the other end is rotatably clamped to the second connecting rod (302). The limiting ring (303) is fixedly sleeved on the outer ring of the right end of the second connecting rod (302). The first retaining sleeve (304) is movably sleeved on the outside of the first connecting rod (301) and the second connecting rod (302). Multiple first retaining rings (305) are sleeved on the outer ring of the right end of the first retaining sleeve (304). The first spring (306) is disposed between the left alloy bearing (203) and the first retaining ring (305) and sleeved on the outside of the first retaining sleeve (304).

3. The constant tension traction mechanism for a lithium battery separator production line according to claim 1, characterized in that: The detachable roller assembly (4) includes a vertical groove rod (401), a sliding sleeve (402), and a traction roller (403). The two ends of the vertical groove rod (401) are respectively fixedly sleeved with a main fixing assembly (3) and an auxiliary fixing assembly (5). The vertical groove rod (401) is slidably sleeved on the vertical groove rod (401), and the traction roller (403) is fixedly sleeved on the outside of the sliding sleeve (402).

4. A constant tension traction mechanism for a lithium battery separator production line according to claim 1 or 3, characterized in that: The auxiliary fixing assembly (5) includes a third connecting rod (501), a fourth connecting rod (502), a second retaining sleeve (503), a second retaining ring (504), and a second spring (505). The third connecting rod (501) is fixedly sleeved on one end of the vertical groove rod (401) near the second mounting plate (103). One end of the fourth connecting rod (502) is engaged with the third connecting rod (501), and the other end is fixedly sleeved on the inner ring of the alloy bearing (203). The second retaining sleeve (503) is movably sleeved on the outside of the third connecting rod (501) and the fourth connecting rod (502). The second retaining ring (504) is fixedly sleeved on the outside of one end of the second retaining sleeve (503) near the vertical groove rod (401). The second spring (505) is disposed between the second retaining ring (504) and the right-side alloy bearing (203) and sleeved on the outside of the second retaining sleeve (503).

5. The constant tension traction mechanism for a lithium battery separator production line according to claim 1, characterized in that: The pressure sensor (204) is located on the extension line of the angle bisector at the corner of the diaphragm.

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