Film conveying system and battery diaphragm heat setting system
Through the design of guide rail components and chain clip movement, the film conveying system that changes the angle of the gauge is solved, and the pollution and retraction uncontrollable problems of multi-roll thermal setting system are achieved, and the pollution-free and controllable diaphragm setting process is achieved, which improves the quality of the diaphragm.
Patent Information
- Application Number
- CN202422344472.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The existing multi-roll thermal setting system is prone to contamination of the diaphragm and the horizontal and vertical retraction is uncontrollable during the shaping process, affecting the quality of the diaphragm.
The guide rail assembly design is adopted, including the main guide rail and the adjustment rail. The track pitch and angle are changed through the movement of the chain clips, and the film is lateral stretched and longitudinally contracted or stretched, and heat set is combined with the heating box.
The film setting process without pollution is achieved, and the horizontal and vertical retraction is controllable, improving the quality stability of the diaphragm.
Smart Images
Figure CN223060317U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of film processing, and more specifically to a film conveying system and a battery diaphragm thermal setting system. Background Art
[0002] During the production of battery diaphragms, the diaphragms need to be "heat-set" after stretching, in order to eliminate the internal stress in the film and reduce the thermal shrinkage of the finished diaphragm. At present, most of the diaphragms are heat-set by a heated multi-roller system. The diaphragm and the heated rollers are heated by contact to reach the setting temperature to achieve the purpose of setting. The shortcomings of the multi-roller heat-setting system are: first, the surface contamination of the rollers will be directly transmitted to the surface of the diaphragm, causing the quality of the diaphragm to deteriorate; second, the difference in the linear speed of each roller driven by the multi-roller has a great influence on the heat setting of the diaphragm. The diameter accuracy of each roller and the linear speed control accuracy of the roller will affect the quality of the diaphragm, and the transverse and longitudinal shrinkage of the diaphragm during the setting process is uncontrollable.
[0003] Therefore, how to provide a film conveying system and a battery separator heat setting system that will not contaminate the film and has controllable lateral and longitudinal retraction during the setting process has become a technical problem that urgently needs to be solved in this field. Utility Model Content
[0004] The utility model aims to provide a film conveying system and a battery diaphragm heat setting system which will not pollute the film and can control the transverse and longitudinal retraction during the setting process.
[0005] The first aspect of the utility model provides a film conveying system, comprising two sets of guide rail assemblies arranged opposite to each other, wherein the track gauge between the two sets of guide rail assemblies changes according to a first preset rule;
[0006] The guide rail assembly comprises a main rail and an adjustment rail which are arranged at intervals, and the distance between the main rail and the adjustment rail changes according to a second preset rule;
[0007] The chain clamp comprises a body, a first sprocket assembly and a longitudinal adjustment assembly; a plurality of chain clamps are sequentially arranged along the extension direction of the main guide rail; the body comprises a clamping portion for clamping a film; the first sprocket assembly is arranged on the body and cooperates with the main guide rail; one end of the longitudinal adjustment assembly is hinged on the body, and the other end of the longitudinal adjustment assembly is hinged to the adjacent adjustment assembly at a hinge point, and a matching piece is arranged on the hinge point;
[0008] The matching piece is connected to the adjusting rail. When the chain clip moves along the extending direction of the main rail, the adjusting rail forces the matching piece to move toward or away from the main rail to shorten or lengthen the distance between two adjacent chain clips.
[0009] Optionally, the longitudinal adjustment assembly includes a chain link, and circular holes are provided at both ends of the length of the chain link;
[0010] A pin shaft is fixedly connected to the body, and the pin shaft penetrates through the round hole to hinge the link to the body;
[0011] The mating part is a roller, and the two round holes of the two links hinged to each other are concentric with the roller.
[0012] Optionally, the roller is located between the main guide rail and the adjustment rail, and the adjustment rail forces the roller to move towards the main guide rail, thereby changing the included angle between the two links hinged to each other.
[0013] Optionally, the longitudinal adjustment assembly further includes a reset structure, and the reset structure cooperates with the link. When the distance between the main guide rail and the adjustment rail becomes larger, the reset structure forces the roller to move towards the adjustment rail.
[0014] Optionally, the gauge between the two sets of guide rail assemblies first gradually increases to a first preset distance along the moving direction of the chain clip and then extends parallel to each other.
[0015] Optionally, after the two sets of guide rail assemblies extend parallel to each other for a certain distance, the gauge first gradually decreases to a second preset distance along the moving direction of the chain clip and then extends parallel to each other again.
[0016] Optionally, the film conveying system further includes a driving device, and the driving device drives the chain clip to move along the extending direction of the main guide rail.
[0017] In a second aspect of the present utility model, a battery separator heat setting system is disclosed, which includes a heating box and a film conveying system. The film conveying system adopts the film conveying system according to any one of the first aspects of the present utility model, and at least a section of the guide rail assembly is arranged in the heating box.
[0018] Optionally, the heating box includes a preheating zone, a drying zone and a cooling zone arranged in sequence, and the temperature of the drying zone is greater than that of the preheating zone which is greater than that of the cooling zone.
[0019] Optionally, the box body of the heating box includes a heat insulation layer.
[0020] According to the technical content disclosed by the present utility model, the following beneficial effects are achieved:
[0021] The utility model provides a film conveying system in which both sides of the width of the film are clamped by chain clamps and the film moves forward along the extension direction of the guide rail assembly. The track gauge between the two groups of guide rail assemblies changes according to a first preset rule to achieve transverse stretching (width direction of the film) of the film during film shaping; the distance between the main guide rail and the adjustment rail changes according to a second preset rule; one end of the longitudinal adjustment assembly is hinged on the main body, and the other end of the longitudinal adjustment assembly is hinged to the adjacent adjustment assembly at a hinge point, and a matching piece is provided on the hinge point; the matching piece is connected to the adjustment rail, and when the chain clamp moves along the extension direction of the main guide rail, the adjustment rail forces the matching piece to move in a direction close to or away from the main guide rail, so as to shorten or widen the distance between two adjacent chain clamps, thereby achieving longitudinal contraction or stretching (length direction of the film) of the film.
[0022] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.
[0024] Figure 1 It is a side structural diagram of the battery diaphragm heat setting system of the utility model.
[0025] Figure 2 This is a diagram of the internal structure of the battery diaphragm heat setting system of the utility model.
[0026] Figure 3 This is a structural diagram of the chain clip of the present utility model.
[0027] Figure 4 It is a cross-sectional view of the battery separator heat setting system of the utility model.
[0028] Figure 5 It is a schematic diagram of the matching relationship between the guide rail assembly and the chain clip of the utility model.
[0029] Explanation of the accompanying drawings: 1. Guide rail assembly; 11. Main rail; 12. Adjustment rail; 2. Heating box; 3. Chain clamp; 31. Clamping part; 32. Sprocket assembly; 41. Chain link; 42. Roller; 43. Pin; 5. Film; 6. Driving device. DETAILED DESCRIPTION
[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.
[0031] The following description of at least one exemplary embodiment is merely illustrative and in no way restrictive of the present utility model and its application or use.
[0032] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.
[0033] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.
[0034] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
[0035] Referring to Figure 1 , the present utility model discloses a heat setting system for a battery separator, which includes a heating box 2 and a film conveying system. The heating box 2 includes a preheating zone, a drying zone, and a cooling zone arranged in sequence. The temperature of the drying zone is higher than that of the preheating zone, and the temperature of the preheating zone is higher than that of the cooling zone. The box body of the heating box 2 is provided with a heat insulation layer. The film conveying system includes a driving device 6, two sets of guide rail assemblies 1 arranged oppositely, and chain clips 3 that cooperate with the guide rail assemblies 1 and can move along the extending direction of the guide rail assemblies 1. At least a section of the guide rail assemblies 1 is arranged inside the heating box 2 and penetrates through the preheating zone, the drying zone, and the cooling zone arranged in sequence.
[0036] A plurality of chain clips 3 are respectively arranged on the two sets of guide rail assemblies 1 arranged oppositely. The chain clips 3 on the two sets of guide rail assemblies 1 respectively clamp the two width sides of the film 5. The driving device 6 drives the chain clips 3 to move along the extending direction of the main guide rail 11, so as to drive the film 5 into the heating box 2 and pass through the preheating zone, the drying zone, and the cooling zone in sequence. The film is in a box-type environment with heating and heat preservation functions throughout the conveying process, ensuring the realization of the process temperature during the conveying process and achieving the purpose of drying the film.
[0037] The guide rail assembly 1 includes a main guide rail 11 and an adjustment rail 12 arranged at intervals. The gauge between the main guide rails 11 of the two sets of guide rail assemblies 1 changes according to a first preset rule along the advancing direction of the film 5; the distance between the main guide rail 11 and the adjustment rail 12 changes according to a second preset rule along the advancing direction of the film 5; specifically, the gauge between the main guide rails 11 of the two sets of guide rail assemblies 1 gradually increases to a first preset distance along the moving direction of the chain clip 3 and then extends parallel to each other. After the main guide rails 11 of the two sets of guide rail assemblies 1 extend parallel to each other for a certain distance, the gauge gradually decreases to a second preset distance along the moving direction of the chain clip 3 and then extends parallel to each other again.
[0038] The chain clip 3 includes a body, a first sprocket assembly 32 and a longitudinal adjustment assembly; a plurality of chain clips 3 are sequentially arranged along the extension direction of the main rail 11; the body includes a clamping portion 31 for clamping the film 5; the first sprocket assembly 32 is arranged on the body and cooperates with the main rail 11; the longitudinal adjustment assembly includes a chain link 41, and circular holes are opened at both ends of the length of the chain link 41; a pin 43 is fixedly connected to the body, and the pin 43 passes through the circular hole to hinge the chain link 41 on the body; the other end of the chain link 41 is hinged to the chain link 41 on the adjacent chain clip 3 at a hinge point, and a matching piece is arranged on the hinge point; the matching piece is a roller 42, and the two circular holes of the two hinged chain links 41 are concentrically arranged with the roller 42. The roller 42 is connected to the adjustment rail 12, and when the chain clip 3 moves along the extension direction of the main rail 11, the adjustment rail 12 forces the roller 42 to move in a direction close to or away from the main rail 11, so as to shorten or extend the distance between the two adjacent chain clips 3. In this embodiment, the roller 42 is located between the main rail 11 and the adjustment rail 12, and the adjustment rail 12 forces the roller 42 to move toward the main rail 11, changing the angle between the two hinged links 41, thereby shrinking the film 5 in the longitudinal direction. Of course, the angle between the two hinged links 41 can be increased by the cooperation between the roller 42 and the adjustment rail 12, that is, the distance between the two adjacent chain clips 3 is increased, thereby achieving longitudinal stretching of the film 5.
[0039] In some embodiments, the longitudinal adjustment assembly further includes a reset structure (not shown in the figure), which cooperates with the chain link 41. When the distance between the main rail 11 and the adjustment rail 12 increases, the reset structure forces the roller 42 to move toward the adjustment rail 12. Of course, in some embodiments, the reset structure is not necessary. When the distance between the main rail 11 and the adjustment rail 12 increases, as the chain clip 3 moves, the two hinged chain links 41 are pulled apart, the angle between the two hinged chain links 41 increases, and the distance between two adjacent chain clips 3 increases.
[0040] In some embodiments, the roller 42 is located on the side of the adjustment rail 12 facing away from the main rail 11. The adjustment rail 12 forces the roller 42 to move away from the main rail 11, changing the angle between the two hinged links 41, thereby causing the film 5 to shrink or stretch in the longitudinal direction.
[0041] In summary, in the film conveying system provided by the utility model, the width sides of the film 5 are clamped by the chain clamps 3 and move forward along the extension direction of the guide rail assembly 1, and the gauge between the two groups of guide rail assemblies 1 changes according to the first preset rule, so as to realize the lateral stretching (width direction of the film 5) of the film 5 during the shaping process of the film 5; the distance between the main rail 11 and the adjustment rail 12 changes according to the second preset rule; one end of the longitudinal adjustment assembly is hinged on the main body, and the other end of the longitudinal adjustment assembly is hinged to the adjacent adjustment assembly at a hinge point, and a matching piece is provided on the hinge point; the matching piece is connected to the adjustment rail 12, and when the chain clamp 3 moves along the extension direction of the main rail 11, the adjustment rail 12 forces the matching piece to move in the direction close to or away from the main rail 11, so as to shorten or pull the distance between the two adjacent chain clamps 3, thereby realizing the longitudinal contraction or stretching (length direction of the film 5) of the film 5.
[0042] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.
Claims
1. A film conveying system, characterized in that, include: Two sets of guide rail assemblies are arranged opposite to each other, and the track gauge between the two sets of guide rail assemblies changes according to a first preset rule; The guide rail assembly comprises a main rail and an adjustment rail arranged at intervals, and the distance between the main rail and the adjustment rail changes according to a second preset rule; A chain clip, comprising a body, a first sprocket assembly and a longitudinal adjustment assembly; a plurality of the chain clips are sequentially arranged along the extension direction of the main guide rail; the body comprises a clamping portion for clamping a film; the first sprocket assembly is arranged on the body and cooperates with the main guide rail; one end of the longitudinal adjustment assembly is hinged on the body, and the other end of the longitudinal adjustment assembly is hinged to the adjacent adjustment assembly at a hinge point, and a matching piece is arranged on the hinge point; The matching piece is connected to the adjustment rail. When the chain clip moves along the extension direction of the main rail, the adjustment rail forces the matching piece to move toward or away from the main rail to shorten or lengthen the distance between two adjacent chain clips.
2. The film conveying system according to claim 1, characterized in that: The longitudinal adjustment assembly includes a chain link, and circular holes are provided at both ends of the length of the chain link; A pin is fixedly connected to the body, and the pin passes through the circular hole to hinge the chain link to the body; The matching piece is a roller, and the two circular holes of the two chain links hinged to each other are arranged concentrically with the roller.
3. The film conveying system according to claim 2, characterized in that: The roller is located between the main rail and the adjustment rail, and the adjustment rail forces the roller to move toward the main rail, thereby changing the angle between the two chain links hinged to each other.
4. The film conveying system according to claim 3, characterized in that: The longitudinal adjustment assembly also includes a reset structure, which cooperates with the chain link. When the distance between the main rail and the adjustment rail increases, the reset structure forces the roller to move toward the direction close to the adjustment rail.
5. The film conveying system according to any one of claims 1 to 4, characterized in that: The track gauge between the two groups of guide rail assemblies gradually increases to a first preset distance along the moving direction of the chain clip and then remains parallel to each other.
6. The film conveying system according to any one of claims 1 to 4, characterized in that: After the two groups of guide rail assemblies extend parallel to each other for a certain distance, the track gauge gradually decreases along the moving direction of the chain clip to a second preset distance and then extends parallel to each other again.
7. The film conveying system according to any one of claims 1 to 4, characterized in that: The film conveying system further comprises a driving device, which drives the chain clamp to move along the extension direction of the main rail.
8. A thermal setting system for a battery separator, comprising a heating chamber and a film conveying system, characterized in that, The film conveying system adopts the film conveying system described in any one of claims 1 to 7, and at least a section of the guide rail assembly is arranged in the heating box.
9. The battery separator heat setting system according to claim 8, characterized in that: The heating box includes a preheating zone, a drying zone, and a cooling zone arranged in sequence, and the temperature of the drying zone is greater than that of the preheating zone which is greater than that of the cooling zone.
10. The battery separator heat setting system according to claim 9, wherein, The box body of the heating box includes a heat-insulating layer.