Tension constant control mechanism for lithium battery diaphragm production

Abstract

The utility model discloses a kind of tension constant control mechanism for lithium battery diaphragm production, the utility model relates to lithium battery diaphragm manufacturing equipment technical field.The tension constant control mechanism for lithium battery diaphragm production, including base, the top surface of the base is fixedly installed with protective cover, the upper surface of the base and located the symmetrical installation of the inner chamber of the protective cover with two supports, the utility model passes through axle type tension sensor, neither influence tension roll sliding, can also real-time monitoring the tension value of lithium battery diaphragm, still can the detected tension value feedback to touch all-in-one machine, when the tension value received by touch all-in-one machine exceeds preset value, touch all-in-one machine according to tension value control electric push rod drives tension roll to go up and down, and further can real-time adjust the tension value of lithium battery diaphragm, ensure that lithium battery diaphragm tension is always stable in set value range, further improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium battery separator manufacturing equipment, specifically a tension constant control mechanism for lithium battery separator production. Background Technology

[0002] The lithium-ion battery separator is a key inner component located between the positive and negative electrodes. Its core function is to provide physical isolation to prevent short circuits. The separator also possesses chemical and electrochemical stability, as well as appropriate porosity and mechanical strength. At the same time, the separator's thermal shut-off function is crucial—when the temperature rises abnormally, the micropores melt and close, blocking ion transport to prevent thermal runaway. It is the core line of defense for battery safety, and its performance directly determines the battery's capacity, cycle life, and safety reliability. It is an indispensable core material for high-performance lithium-ion batteries.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: traditional tension control mechanisms lack real-time monitoring and feedback adjustment mechanisms, cannot make accurate adjustments in a timely manner according to changes in tension, and cannot guarantee that the tension remains constant throughout the entire production process, thus failing to meet production requirements. Therefore, we propose a constant tension control mechanism for lithium battery separator production to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a constant tension control mechanism for lithium battery separator production. It solves the problem that traditional tension control mechanisms lack real-time monitoring and feedback adjustment mechanisms, cannot make accurate adjustments in a timely manner according to changes in tension, and cannot ensure that the tension remains constant throughout the entire production process, thus failing to meet production requirements.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a constant tension control mechanism for lithium battery separator production, comprising a base, a protective cover fixedly installed on the top surface of the base, two supports symmetrically installed on the upper surface of the base and within the inner cavity of the protective cover, the top of each of the two supports being rotatably connected to a conveying roller via a bearing seat, balance holes being horizontally opened on both side walls of the protective cover, a touch screen all-in-one machine being provided on the outer side wall of the protective cover, a limit component being provided on the upper surface of the inner wall of the support and at the middle position of the two conveying rollers, and an electric push rod being connected to the upper surface of the sliding end of the limit component;

[0006] A connecting plate is fixedly connected to the lower surface of the sliding end of the limiting component. A tension roller is provided on the lower surface of the connecting plate. A through-shaft tension sensor is installed at both ends of the tension roller. Both through-shaft tension sensors are fixedly connected to the lower surface of the connecting plate.

[0007] Preferably, the electric push rod is fixedly connected to the upper surface of the outer side of the protective cover via a mounting plate, and the telescopic end of the electric push rod passes through the protective cover and is fixedly connected to the sliding end of the limiting component.

[0008] Preferably, the limiting component includes a rectangular frame, which is fixedly installed on the upper surface of the inner wall of the protective cover, the telescopic end of the electric push rod is fixedly connected to the upper surface of the rectangular frame, and the connecting plate is connected to the lower surface of the rectangular frame.

[0009] Two limiting grooves are symmetrically opened on both sides of the inner cavity of the rectangular frame, and a slider is inserted into the inner cavity of the rectangular frame. Guide parts are provided on both sides of the slider and on the inner wall of the limiting groove.

[0010] Preferably, a safety door is installed on the side of the protective cover away from the two balance holes via a hinge, the safety door is provided with a transparent observation window, and a silicone ring is provided on the inner wall of each of the two balance holes.

[0011] Preferably, the guide portion includes a rectangular block, which is fixedly installed on one side of the slider and slidably connected to the inner wall of the limiting groove. The rectangular block has grooves symmetrically opened on both sides, and each groove has multiple balls linearly distributed in its inner cavity. The circular surface of the balls is in contact with the side wall of the limiting groove.

[0012] Preferably, the guide portion further includes a rectangular groove formed on the rectangular block and away from the two grooves, a cylinder is fixedly installed on the inner wall of the rectangular groove, a first brake pad is fixedly installed at the output end of the cylinder, and a second brake pad is fixedly installed on one side of the first brake pad and on the side wall of the limiting groove.

[0013] Preferably, the guide, the electric push rod, and the through-shaft tension sensor are all electrically connected to the touch screen all-in-one machine via wires.

[0014] Beneficial effects

[0015] This invention provides a tension constant control mechanism for lithium battery separator production. Compared with the prior art, it has the following advantages:

[0016] This constant tension control mechanism for lithium battery separator production uses a through-shaft tension sensor. It does not affect the sliding of the tension roller, but can monitor the tension value of the lithium battery separator in real time. It can also feed back the detected tension value to the touch screen all-in-one machine. When the tension value received by the touch screen all-in-one machine exceeds the preset value, the touch screen all-in-one machine controls the electric push rod to drive the tension roller to rise and fall according to the tension value. In this way, the tension value of the lithium battery separator can be adjusted in real time to ensure that the tension of the lithium battery separator is always stable within the set value range, thereby further improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the limiting component of this utility model;

[0020] Figure 4 This is a partial schematic diagram of the present invention;

[0021] Figure 5 This is a schematic diagram of the guide section of this utility model;

[0022] Figure 6 This utility model Figure 5 Enlarged diagram of point A in the middle.

[0023] In the diagram: 1. Base; 2. Protective cover; 3. Bracket; 4. Conveyor roller; 5. Balance hole; 6. Limiting component; 61. Rectangular frame; 62. Limiting groove; 63. Slider; 64. Guide part; 641. Rectangular block; 642. Groove; 643. Ball bearing; 644. Rectangular groove; 645. Cylinder; 646. First brake pad; 647. Second brake pad; 7. Electric push rod; 8. Connecting plate; 9. Through-shaft tension sensor; 10. Tension roller; 11. Touch screen all-in-one machine; 12. Safety door. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 6This utility model provides a technical solution: a constant tension control mechanism for lithium battery separator production, including a base 1, a protective cover 2 fixedly installed on the top surface of the base 1, two supports 3 symmetrically installed on the upper surface of the base 1 and in the inner cavity of the protective cover 2, the top of each of the two supports 3 being rotatably connected to a conveying roller 4 via a bearing seat, balance holes 5 horizontally opened on both side walls of the protective cover 2, a touch screen all-in-one machine 11 installed on the outer side wall of the protective cover 2, a limit component 6 installed on the upper surface of the inner wall of the support 3 and in the middle position of the two conveying rollers 4, an electric push rod 7 connected to the upper surface of the sliding end of the limit component 6, a connecting plate 8 fixedly connected to the lower surface of the sliding end of the limit component 6, a tension roller 10 installed on the lower surface of the connecting plate 8, a through-shaft tension sensor 9 installed at both ends of the tension roller 10, and both through-shaft tension sensors 9 being fixedly connected to the lower surface of the connecting plate 8.

[0026] The protective cover 2 can be installed on the base 1, providing space for the balance hole 5, and also allowing for the installation and fixation of the limiting component 6 and the electric push rod 7. Since the limiting component 6 is fixedly connected to the telescopic end of the electric push rod 7 and the connecting plate 8, the tension roller 10 is installed on the lower surface of the connecting plate 8 via two through-shaft tension sensors 9. This allows the lithium battery separator to pass through the two balance holes 5 sequentially, and then one end of the lithium battery separator is connected to the external winding roller. The winding roller is then activated to wind the lithium battery separator. The operator uses the touch screen all-in-one machine 11 to activate the electric push rod 7 and the two through-shaft tension sensors 9. The electric push rod 7... The sliding end of the push-limiting component 6 drives the connecting plate 8, two through-shaft tension sensors 9, and tension roller 10 to move downwards, so that tension roller 10 abuts against the lithium battery separator. At this time, the tension value of the lithium battery separator is monitored in real time by the two through-shaft tension sensors 9, and the detected tension value is fed back to the touch screen all-in-one machine 11. When the tension value received by the touch screen all-in-one machine 11 exceeds the preset value, the touch screen all-in-one machine 11 controls the electric push rod 7 to drive the tension roller 10 to rise and fall according to the tension value, thereby adjusting the tension value of the lithium battery separator in real time, ensuring that the tension of the lithium battery separator is always stable within the set value range, and further improving production efficiency.

[0027] See Figure 1 , Figure 3 The limiting component 6 includes a rectangular frame 61, which is fixedly installed on the upper surface of the inner wall of the protective cover 2. The telescopic end of the electric push rod 7 is fixedly connected to the upper surface of the rectangular frame 61, and the connecting plate 8 is connected to the lower surface of the rectangular frame 61. Two limiting grooves 62 are symmetrically opened on both sides of the inner cavity of the rectangular frame 61, and a slider 63 is inserted into the inner cavity of the rectangular frame 61. Guide parts 64 are provided on both sides of the slider 63 and on the inner wall of the limiting groove 62.

[0028] The rectangular frame 61 in the limiting component 6 can be installed on the upper surface of the inner wall of the protective cover 2, provide space for the limiting groove 62, and slide with the slider 63. Since the telescopic end of the electric push rod 7 is fixedly connected to the upper surface of the rectangular frame 61 and the connecting plate 8 is connected to the lower surface of the rectangular frame 61, when the electric push rod 7 performs telescopic action, its pushing force directly drives 63, causing the slider 63 to slide in the inner cavity of the rectangular frame 61. Since guide parts 64 are provided on both sides of the slider 63 and on the inner wall of the limiting groove 62, the two sliders 63 can drive the two guide parts 64 to slide synchronously and in the same direction along the limiting groove 62 when they slide, ensuring the stability of the slider 63 during the sliding process and further improving the stability of the overall structure. This allows the connecting plate 8 to maintain synchronous displacement with the slider 63 when it moves with the slider 63, avoiding swaying or deviation that may occur due to asynchronous displacement.

[0029] See Figure 1 , Figure 2 The electric push rod 7 is fixedly connected to the upper surface of the protective cover 2 via a mounting plate. The telescopic end of the electric push rod 7 passes through the protective cover 2 and is fixedly connected to the sliding end of the limiting component 6. A safety door 12 is installed on the side of the protective cover 2 away from the two balance holes 5 via a hinge. A transparent observation window is provided on the safety door 12. A silicone ring is provided on the inner wall of the two balance holes 5.

[0030] The electric push rod 7 can be installed on the upper surface of the protective cover 2 via the mounting plate, and can also be fixedly connected to the sliding end of the protective cover 2 and the limiting component 6, thereby providing power to the slider 63 in the limiting component 6. Since the protective cover 2 is equipped with a safety door 12 via a hinge, and the safety door 12 is equipped with a transparent observation window, the staff can observe the working condition inside the protective cover 2 in real time through the transparent observation window, and promptly detect any abnormalities, such as whether the lithium battery separator has wrinkles or breaks during the production process, so as to take corresponding measures to adjust and deal with them quickly, ensuring the normal production and stable product quality. At the same time, this design also facilitates the cleaning and maintenance of the equipment. When it is necessary to clean or repair the inside of the protective cover 2, simply open the safety door 12 installed via the hinge. The operation is simple and quick, improving work efficiency. In addition, since the inner walls of the two balance holes 5 are equipped with silicone rings, the good sealing and elasticity of the silicone rings can protect the lithium battery separator, further ensuring the performance and quality of the product.

[0031] See Figure 3 , Figure 5The guide part 64 includes a rectangular block 641, which is fixedly installed on one side of the slider 63. The rectangular block 641 is slidably connected to the inner wall of the limiting groove 62. Grooves 642 are symmetrically opened on both sides of the rectangular block 641. Multiple balls 643 are linearly distributed in the inner cavity of each groove 642. The circular surface of the balls 643 is in contact with the side wall of the limiting groove 62.

[0032] The rectangular block 641 in the guide section 64 can be installed on the slider 63 or slidably installed in the limiting groove 62. It also provides space for the two grooves 642. Since multiple balls 643 are linearly distributed in the inner cavity of each groove 642, the circular surface of the balls 643 contacts the side wall of the limiting groove 62. As the slider 63 slides along the rectangular frame 61, it drives the rectangular block 641 to slide inside the limiting groove 62. At this time, the balls 643 will roll inside the groove 642, which can convert the sliding friction between the rectangular block 641 and the limiting groove 62 into rolling friction. This not only improves the stability of the moving seat 5, but also reduces the wear between the rectangular block 641 and the limiting groove 62, further improving the overall structural stability.

[0033] See Figure 5 , Figure 6 The guide portion 64 also includes a rectangular groove 644 formed on the rectangular block 641 and away from the two recesses 642. A cylinder 645 is fixedly installed on the inner wall of the rectangular groove 644. A first brake pad 646 is fixedly installed at the output end of the cylinder 645. A second brake pad 647 is fixedly installed on one side of the first brake pad 646 and on the side wall of the limiting groove 62.

[0034] The cylinder 645 can be installed and fixed through the rectangular groove 644 in the guide section 64. Since the first brake pad 646 is fixedly installed at the output end of the cylinder 645 and the second brake pad 647 is fixedly installed on the side wall of the limiting groove 62, when the position of the connecting plate 8 in the rectangular frame 61 is adjusted, the cylinder 645 is activated, which drives the first brake pad 646 and the second brake pad 647 to fit tightly together. The resulting holding force can effectively limit the position of the connecting plate 8 in the rectangular frame 61, preventing it from shifting due to external force during subsequent work. This ensures constant tension control during the lithium battery separator production process and further improves the stability and reliability of the overall production process.

[0035] See Figure 2 , Figure 3 The guide section 64, the electric push rod 7, and the through-shaft tension sensor 9 are all electrically connected to the touch screen all-in-one machine 11 via wires.

[0036] The touch screen all-in-one machine 11 can control the start and stop of the cylinder 645, electric push rod 7 and through-shaft tension sensor 9 in the guide section 64 respectively. This ensures that the tension signal detected by the through-shaft tension sensor 9, the adjustment signal fed back by the electric push rod 7 and the control action signal executed by the through-shaft tension sensor 9 can be accurately transmitted to the touch screen all-in-one machine 11. After receiving the signal, the touch screen all-in-one machine 11 performs rapid analysis and processing, and then issues precise control commands to achieve constant tension control during the lithium battery separator production process, ensuring that the produced lithium battery separator has stable and reliable quality.

[0037] During operation, the protective cover 2 can be installed on the base 1, providing space for the balance holes 5, and also allowing for the installation and fixation of the limiting component 6 and the electric push rod 7. Since the limiting component 6 is fixedly connected to the telescopic end of the electric push rod 7 and the connecting plate 8, the tension roller 10 is installed on the lower surface of the connecting plate 8 via two through-shaft tension sensors 9. This allows the lithium battery separator to pass through the two balance holes 5 sequentially, and then one end of the lithium battery separator is connected to the external winding roller. The winding roller is then activated to drive the lithium battery separator to wind up. The operator uses the touch screen all-in-one machine 11 to activate the electric push rod 7 and the two through-shaft tension sensors 9, thereby controlling the operation of the electric push rod. The lever 7 pushes the sliding end of the limiting component 6 to drive the connecting plate 8, two through-shaft tension sensors 9, and tension roller 10 downwards, so that tension roller 10 abuts against the lithium battery separator. At this time, the two through-shaft tension sensors 9 monitor the tension value of the lithium battery separator in real time and feed the detected tension value back to the touch screen all-in-one machine 11. When the tension value received by the touch screen all-in-one machine 11 exceeds the preset value, the touch screen all-in-one machine 11 controls the electric push rod 7 to drive the tension roller 10 up and down according to the tension value, thereby adjusting the tension value of the lithium battery separator in real time, ensuring that the tension of the lithium battery separator is always stable within the set value range, and further improving production efficiency.

[0038] The rectangular frame 61 in the limiting component 6 can be installed on the upper surface of the inner wall of the protective cover 2, provide space for the limiting groove 62, and slide with the slider 63. Since the telescopic end of the electric push rod 7 is fixedly connected to the upper surface of the rectangular frame 61 and the connecting plate 8 is connected to the lower surface of the rectangular frame 61, when the electric push rod 7 performs telescopic action, its pushing force directly drives 63, causing the slider 63 to slide in the inner cavity of the rectangular frame 61. Since guide parts 64 are provided on both sides of the slider 63 and on the inner wall of the limiting groove 62, the two sliders 63 can drive the two guide parts 64 to slide synchronously and in the same direction along the limiting groove 62 when they slide, ensuring the stability of the slider 63 during the sliding process and further improving the stability of the overall structure. This allows the connecting plate 8 to maintain synchronous displacement with the slider 63 when it moves with the slider 63, avoiding swaying or deviation that may occur due to asynchronous displacement.

[0039] The electric push rod 7 can be installed on the upper surface of the protective cover 2 via the mounting plate, and can also be fixedly connected to the sliding end of the protective cover 2 and the limiting component 6, thereby providing power to the slider 63 in the limiting component 6. Since the protective cover 2 is equipped with a safety door 12 via a hinge, and the safety door 12 is equipped with a transparent observation window, the staff can observe the working condition inside the protective cover 2 in real time through the transparent observation window, and promptly detect any abnormalities, such as whether the lithium battery separator has wrinkles or breaks during the production process, so as to take corresponding measures to adjust and deal with them quickly, ensuring the normal production and stable product quality. At the same time, this design also facilitates the cleaning and maintenance of the equipment. When it is necessary to clean or repair the inside of the protective cover 2, simply open the safety door 12 installed via the hinge. The operation is simple and quick, improving work efficiency. In addition, since the inner walls of the two balance holes 5 are equipped with silicone rings, the good sealing and elasticity of the silicone rings can protect the lithium battery separator, further ensuring the performance and quality of the product.

[0040] The rectangular block 641 in the guide section 64 can be installed on the slider 63 or slidably installed in the limiting groove 62. It also provides space for the two grooves 642. Since multiple balls 643 are linearly distributed in the inner cavity of each groove 642, the circular surface of the balls 643 contacts the side wall of the limiting groove 62. As the slider 63 slides along the rectangular frame 61, it drives the rectangular block 641 to slide inside the limiting groove 62. At this time, the balls 643 will roll inside the groove 642, which can convert the sliding friction between the rectangular block 641 and the limiting groove 62 into rolling friction. This not only improves the stability of the moving seat 5, but also reduces the wear between the rectangular block 641 and the limiting groove 62, further improving the overall structural stability.

[0041] The cylinder 645 can be installed and fixed through the rectangular groove 644 in the guide section 64. Since the first brake pad 646 is fixedly installed at the output end of the cylinder 645 and the second brake pad 647 is fixedly installed on the side wall of the limiting groove 62, when the position of the connecting plate 8 in the rectangular frame 61 is adjusted, the cylinder 645 is activated, which drives the first brake pad 646 and the second brake pad 647 to fit tightly together. The resulting holding force can effectively limit the position of the connecting plate 8 in the rectangular frame 61, preventing it from shifting due to external force during subsequent work. This ensures constant tension control during the lithium battery separator production process and further improves the stability and reliability of the overall production process.

[0042] In summary, this device, through the through-shaft tension sensor 9, can monitor the tension value of the lithium battery separator in real time without affecting the sliding of the tension roller 10, and can also feed back the detected tension value to the touch screen all-in-one machine 11. When the tension value received by the touch screen all-in-one machine 11 exceeds the preset value, the touch screen all-in-one machine 11 controls the electric push rod 7 to drive the tension roller 10 to rise and fall according to the tension value, thereby enabling real-time adjustment of the tension value of the lithium battery separator.

[0043] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A constant tension control mechanism for lithium battery separator production, comprising a base (1), a protective cover (2) fixedly mounted on the top surface of the base (1), and two supports (3) symmetrically mounted on the upper surface of the base (1) and within the inner cavity of the protective cover (2), wherein the tops of the two supports (3) are rotatably connected to a conveying roller (4) via a bearing seat, characterized in that: The protective cover (2) has horizontal balance holes (5) on both sides. The outer side wall of the protective cover (2) is equipped with a touch screen all-in-one machine (11). The upper surface of the inner wall of the bracket (3) and the middle position of the two conveying rollers (4) are provided with a limit component (6). The upper surface of the sliding end of the limit component (6) is connected with an electric push rod (7). A connecting plate (8) is fixedly connected to the lower surface of the sliding end of the limiting component (6). A tension roller (10) is provided on the lower surface of the connecting plate (8). A through-shaft tension sensor (9) is installed at both ends of the tension roller (10). Both through-shaft tension sensors (9) are fixedly connected to the lower surface of the connecting plate (8).

2. The tension constant control mechanism for lithium battery separator production according to claim 1, characterized in that: The electric push rod (7) is fixedly connected to the upper surface of the outer side of the protective cover (2) through the mounting plate. The telescopic end of the electric push rod (7) passes through the protective cover (2) and is fixedly connected to the sliding end of the limiting component (6).

3. The tension constant control mechanism for lithium battery separator production according to claim 1, characterized in that: The limiting component (6) includes a rectangular frame (61), which is fixedly installed on the upper surface of the inner wall of the protective cover (2). The telescopic end of the electric push rod (7) is fixedly connected to the upper surface of the rectangular frame (61), and the connecting plate (8) is connected to the lower surface of the rectangular frame (61). Two limiting grooves (62) are symmetrically opened on both sides of the inner cavity of the rectangular frame (61), and a slider (63) is inserted into the inner cavity of the rectangular frame (61). Guide parts (64) are provided on both sides of the slider (63) and located on the inner wall of the limiting groove (62).

4. The tension constant control mechanism for lithium battery separator production according to claim 1, characterized in that: The protective cover (2) is fitted with a safety door (12) via a hinge on the side away from the two balance holes (5). The safety door (12) is provided with a transparent observation window, and the inner walls of the two balance holes (5) are provided with silicone rings.

5. The tension constant control mechanism for lithium battery separator production according to claim 3, characterized in that: The guide part (64) includes a rectangular block (641), which is fixedly installed on one side of the slider (63). The rectangular block (641) is slidably connected to the inner wall of the limiting groove (62). The rectangular block (641) has symmetrically provided grooves (642) on both sides. Each groove (642) has a plurality of balls (643) linearly distributed in its inner cavity. The circular surface of the balls (643) is in contact with the side wall of the limiting groove (62).

6. The tension constant control mechanism for lithium battery separator production according to claim 5, characterized in that: The guide portion (64) further includes a rectangular groove (644) formed on the rectangular block (641) and away from the two grooves (642). A cylinder (645) is fixedly installed on the inner wall of the rectangular groove (644). A first brake pad (646) is fixedly installed at the output end of the cylinder (645). A second brake pad (647) is fixedly installed on one side of the first brake pad (646) and on the side wall of the limiting groove (62).

7. The tension constant control mechanism for lithium battery separator production according to claim 5, characterized in that: The guide part (64), the electric push rod (7) and the through-shaft tension sensor (9) are all electrically connected to the touch screen all-in-one machine (11) through wires.

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