A heating and holding graphite film calender

Abstract

The utility model discloses a kind of graphite film calender of heat preservation, including calender set, heating cabin, heat preservation plate, heating lamp set and driving member and fan plate. Heating cabin is surrounded with transmission channel Semi-enclosed cavity, and heat preservation plate is covered. Heating lamp set is composed of lamp holder, mercury lamp stick, lens cover, and shaping is carried out to radiation. Driving member contains fixed seat, excitation coil, swing head, permanent magnet head, spring and linkage strip, drive fan plate pivoted in rack seat swing, form the sweep-in type micro air current along film. The structure realizes radiation uniform distribution and secondary recovery, inhibits external heat dissipation, improves heating uniformity and energy efficiency, improves calendering quality.

Description

Technical Field

[0001] This utility model relates to the technical field of graphite film calendering equipment, specifically a graphite film calendering machine with heating and heat preservation. Background Technology

[0002] Currently, graphite films typically require preheating and temperature control before entering the calendering unit to reduce thickness fluctuations and stress concentration. Existing equipment mainly includes the following solutions: (1) Open infrared radiation heating. A common practice is to arrange a quartz / mercury lamp rod array above the thin film and place a metal reflector on its back to direct the radiation flux to the thin film channel.

[0003] (2) Hot air circulation heating. Hot air is sprayed onto the surface of the film through a box-type heating chamber equipped with a centrifugal fan or a cross-flow fan to achieve convective heat transfer.

[0004] (3) Heat-conducting roller heating. Electric heating / heat-conducting oil is introduced into the calendering roller or guide roller to make the film contact the roller surface for heat exchange, and it is used in combination with the radiation source above.

[0005] The above solution has the following problems and shortcomings in engineering applications: Insufficient temperature uniformity. Due to the influence of lamp bar spacing, reflector shape error and edge spillage, open lamp arrays are prone to center-edge temperature differences in the width direction of the film, and local hot spots and shadow areas are also prone to form along the machine direction, which leads to shrinkage, wrinkling or dispersion of mechanical properties of the film in subsequent calendering.

[0006] The heat utilization rate is low. In order to obtain a uniform temperature, the hot air circulation scheme often requires a large blowing speed. However, high-speed exhaust or semi-open structure will directly carry away the sensible heat in the cavity, increase the external convection loss, and increase the unit energy consumption. Moreover, relying solely on the radiation shaping of the reflector does not effectively recover the unabsorbed radiation, resulting in insufficient utilization of heat flux.

[0007] The airflow organization for temperature equalization is unreasonable. Existing temperature equalization methods mostly use integral fans or cross-flow fans to form strong lateral convection above the heating zone. This airflow is mainly composed of free jets or large-scale vortices, which have poor wall adhesion and are prone to causing film vibration. In addition, it forms a "jet-leakage" channel at the edge, which actually aggravates heat loss.

[0008] In summary, existing heating and homogenization technologies for the pre-calendering stage of graphite thin films still present challenges in terms of temperature field uniformity, secondary heat utilization and energy efficiency, thermal bridge isolation, and high-temperature lifespan. On the one hand, a uniform and stable thermal field needs to be formed on the film surface; on the other hand, external heat dissipation and structural heat return caused by airflow must be suppressed. Simultaneously, the synergistic capabilities of optical shaping and thermal insulation need to be improved, and maintenance complexity reduced. Therefore, there is an urgent need for a heating and insulation solution that can achieve radiation orientation and multiple heat recovery within a semi-enclosed cavity, achieve temperature homogenization through wall-mounted micro-airflow, and improve reliability through drive and thermal zone isolation. This solution aims to address the aforementioned technical pain points and improve calendering quality and energy efficiency. Utility Model Content

[0009] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0010] Therefore, the technical solution adopted by this utility model is as follows: a graphite film calender with heating and heat preservation, comprising: a calender unit with a film transmission channel, a heating chamber fixedly installed above it and forming a semi-enclosed cavity with the transmission channel, and an insulation board covering the outer periphery of the chamber; a heating lamp assembly arranged in the cavity and located above the transmission channel, the heating lamp assembly consisting of a lamp holder fixedly connected to the chamber, multiple mercury lamp rods installed in the lamp holder, and a lens cover covering the light-emitting side of the mercury lamp rods; driving components and several fan plates are arranged on both sides of the transmission channel, the driving component including a fixed base fixedly connected to the chamber, an excitation coil installed on the fixed base, and a swing head rotatably connected to the fixed base, the swing head being provided with a permanent magnet head and reset by a spring, and a linkage bar fixedly connected to one end of the swing head; a rack seat extending along the width direction of the film is fixedly installed at the end of the fixed base, a swing shaft is provided on one side of the fan plate and pivotally connected to the surface of the rack seat, and a lug is provided on the fan plate and movably connected to the linkage bar. The radiant flux provided by the mercury lamp rod is shaped by the lens cover and then directed to the effective area of ​​the thin film. The excitation drive drives the fan plate to form a sheet-like swirling flow field attached to the surface of the thin film, which promotes the spread of heat in the cavity along the surface and multiple cycles of recovery, significantly improving heating uniformity and energy utilization. At the same time, the magnetic coupling and structural insulation suppress thermal bridge conduction, ensuring long-term stable operation.

[0011] In a preferred embodiment, the lens cover is further configured as a light-transmitting component that is detachably connected to the lamp holder, preferably in the shape of a convex lens.

[0012] Specific technical effects: The convex lens surface can converge and homogenize the radiation emitted from the mercury lamp rod, increase the irradiance density of the effective area of ​​the thin film and reduce hot spots; the detachable connection facilitates lens cleaning and replacement, reduces maintenance costs and maintains long-term light distribution stability.

[0013] In a preferred embodiment, an axial rotary joint is provided between the swing head and the fixed seat, and springs are located on both sides of the swing head and connected to the swing head and the fixed seat respectively to provide bidirectional restoring force.

[0014] Specific technical effects: The symmetrical arrangement of the double-sided springs enables the oscillating head to obtain linear and repeatable reciprocating oscillation characteristics. Combined with the axial rotating pair, it reduces friction and gap impact, ensuring the stability of the fan plate oscillation frequency and amplitude, which is conducive to the formation of a predictable sweeping flow field distribution.

[0015] In a preferred example, the fan is further configured as follows: the fan is a plurality of comb-shaped blades arranged along the width of the film, the root of the comb-shaped blades is fixed to the swing shaft, the free end of the blades is set to be bent in a loop towards the film surface, and the blades are arranged at equal intervals to form a sheet-like swept-in flow field during swinging.

[0016] Specific technical effects: The zigzag bends of the comb-shaped blades improve adhesion to the wall and suppress large-scale eddies, while the evenly spaced arrangement makes the flow distribution along the radial direction more uniform, thereby reducing the temperature difference between the center and edge of the film and reducing the risk of film vibration.

[0017] In a preferred example, the rack seat surface is provided with several C-shaped arc holes, and the swing shaft is rotated and sleeved in each arc hole to achieve reciprocating swing.

[0018] Specific technical effects: The C-shaped arc hole provides reliable support and stroke limit for the swing shaft, ensuring consistent and repeatable swing angle; the modular multi-hole arrangement facilitates segmented assembly and quick replacement of the fan plate, reducing downtime.

[0019] In a preferred embodiment, the lugs on the surface of the swing shaft or fan plate are movably connected to the linkage, preferably using a pin-elongated hole or ball-head-groove connection.

[0020] Specific technical effects: The movable connection absorbs assembly and thermal expansion errors, reduces lateral load and wear in torque transmission, and improves the reliability of the transmission chain; it simplifies disassembly and alignment while maintaining the same driving force.

[0021] In a preferred embodiment, the insulation board is further configured such that it has a multi-layer composite structure, with an inner infrared high reflectivity layer and an outer heat insulation layer that is fitted to the outer wall of the heating chamber.

[0022] Specific technical effects: The infrared high reflectivity layer reflects radiation that is not absorbed by the thin film back into the cavity, enabling secondary utilization; the outer heat insulation layer reduces external heat transfer, and together with the semi-enclosed cavity, significantly reduces convection and radiation loss, improving overall energy efficiency.

[0023] In a preferred example, the drive unit and the fan plate are symmetrically grouped on both sides of the transmission channel, and the swing plane of each swing axis forms a preset angle with respect to the film plane, so that the micro-airflow formed on both sides converges in the middle region of the film.

[0024] Specific technical effects: The symmetrical inflow improves the radial temperature difference after converging in the middle, and the edge region is compensated by the reverse inflow effect; the included angle parameter can be adjusted according to the width and process temperature, thereby achieving a higher average temperature without increasing the total air volume.

[0025] The above-mentioned technical features can be arbitrarily combined or grouped according to process requirements. For example, the light distribution parameters of the lens cover can be optimized in conjunction with the swing angle and frequency of the fan plate; the rack seat holes can correspond to the group of fan plates to achieve zoned temperature uniformity control; the insulation board material can be selected from metal high-reflectivity film + microporous insulation layer or ceramic fiber composite layer according to working temperature and cleaning requirements. All embodiments can be combined without conflict and are all within the protection scope of this utility model.

[0026] The beneficial effects achieved by this utility model are as follows: 1. In this utility model, a semi-enclosed radiation cavity is formed by the heating chamber and the insulation plate. The mercury lamp rod and the lens cover are used to directionally shape the thermal radiation. The fan plate forms a sweeping micro-airflow attached to the surface of the graphite film in the cavity, which spreads the local high temperature air mass along the surface and recovers heat through multiple cycles. This significantly improves the heating uniformity and heating efficiency of the film surface, suppresses the risk of local overheating, wrinkling and shrinkage, and reduces external convection loss, thus achieving effective energy utilization without increasing the overall power.

[0027] 2. In this utility model, a swing head-connecting bar-fan plate transmission chain driven by an excitation coil is adopted. Combined with the rack seat and C-shaped arc hole to support and limit the swing shaft, a stable and reliable small-amplitude swing and low-wear transmission are achieved. A magnetic coupling and thermal isolation channel is formed between the driving component and the hot zone, cutting off the metal direct thermal bridge and ensuring stable operation and service life under long-term high-temperature conditions. The fan plates arranged symmetrically on both sides allow the airflow to converge in the middle of the film, making assembly, disassembly and maintenance convenient. The overall safety and maintainability of the machine are improved, and the calendering quality and yield are improved simultaneously. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of a heating lamp assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the drive component and fan plate structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the surface structure of the driving component according to an embodiment of the present invention; Figure 5 This is an exploded structural diagram of the fan plate and rack seat according to an embodiment of the present invention.

[0029] Figure label: 100. Calendering unit; 110. Heating chamber; 120. Insulation board; 200. Heating lamp assembly; 210. Lamp holder; 220. Mercury lamp rod; 230. Lens cover; 300. Drive component; 310. Mounting base; 320. Excitation coil; 330. Swing head; 311. Rack and pinion seat; 331. Permanent magnet head; 332. Spring; 333. Linkage bar; 400, fan plate; 410, swing shaft; 420, lug. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0031] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0032] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a heating and heat-insulating graphite film calendering machine.

[0033] Combination Figures 1-5 As shown, the present invention provides a heating and heat-insulating graphite film calender, including a calender unit 100, a heating chamber 110, a heat insulation board 120, a heating lamp group 200, a driving component 300, and several fan plates 400.

[0034] In this embodiment, the upper surface of the calender unit 100 is provided with a transmission channel for conveying graphite film. A heating chamber 110 is fixedly installed above the calender unit 100, and the heating chamber 110 and the transmission channel form a semi-enclosed cavity to limit the space for radiation and micro-airflow. An insulation plate 120 is applied to the outer periphery of the heating chamber 110 to suppress external heat dissipation and achieve heat recovery.

[0035] The heating lamp assembly 200 is arranged inside the heating chamber 110 and above the transmission channel. The heating lamp assembly 200 includes a lamp holder 210 fixedly connected to the heating chamber 110, multiple mercury lamp rods 220 installed in the lamp holder 210, and a lens cover 230 covering the light-emitting side of the mercury lamp rods 220. The light-emitting surface of the lens cover 230 faces the graphite film to shape and focus the radiant flux, so that the irradiation mainly acts on the effective area of ​​the film.

[0036] The drive unit 300 is arranged on both sides of the transmission channel. Each side includes a fixed base 310 fixedly connected to the heating chamber 110, an excitation coil 320 mounted on the fixed base 310, and a swing head 330 rotatably connected to the fixed base 310 via an axial rotating pair. A permanent magnet head 331 is provided on the swing head 330, and springs 332 arranged on both sides of the swing head 330 are connected to the fixed base 310 to provide bidirectional restoring force. A linkage bar 333 is fixedly connected to one end of the swing head 330 for outputting the swing driving force.

[0037] In this embodiment, a rack seat 311 is fixedly mounted at the end of the fixed base 310. The rack seat 311 is located below the heating lamp assembly 200 and extends along the width direction of the graphite film. A swing shaft 410 is provided on one side of the fan plate 400. The swing shaft 410 is pivotally mounted on the surface of the rack seat 311, thereby causing the fan plate 400 to reciprocate around the swing shaft 410. A lug 420 is provided on the fan plate 400. The lug 420 is movably connected to the linkage 333 to realize the synchronous transmission of the reciprocating swing of the swing head 330 to the fan plate 400. This structure forms a sheet-like inflow field attached to the surface of the film in the semi-enclosed cavity, so that the radiant heat generated by the mercury lamp rod 220 is evenly spread along the surface and repeatedly recycled, thereby improving heating uniformity and reducing external convection loss.

[0038] In this embodiment, the lens cover 230 is a light-transmitting component that can be detachably connected to the lamp holder 210, and the lens cover 230 is in the shape of a convex lens. The detachable connection of the lens cover 230 facilitates maintenance and cleaning, and the convex lens-shaped curved surface is used to converge and homogenize the emitted radiation from the mercury lamp rod 220, thereby increasing the irradiance density of the effective area of ​​the thin film, reducing hot spots, and improving the uniformity of the in-plane temperature field.

[0039] In this embodiment, an axial revolute joint is provided between the swing head 330 and the fixed base 310, enabling the swing head 330 to rotate smoothly around the axis relative to the fixed base 310. Springs 332 are respectively arranged on both sides of the swing head 330, with their two ends connected to the swing head 330 and the fixed base 310, respectively, providing bidirectional restoring force for the swing head 330. The excitation coil 320 and the permanent magnet head 331 are arranged at intervals to form an air gap magnetic circuit. When the excitation coil 320 is switched on and off or is alternately energized at a preset frequency, an alternating electromagnetic torque is generated at the permanent magnet head 331, driving the swing head 330 to oscillate back and forth around the revolute joint. The swing head 330 transmits the oscillation driving force to the oscillation mechanism on the side of the fan plate 400 via the linkage bar 333, ensuring that the fan plate 400 obtains a stable and controllable oscillation amplitude and frequency.

[0040] In this embodiment, the fan plate 400 is integrally formed from a plurality of comb-shaped blades arranged along the width direction of the graphite film. The roots of the comb-shaped blades are fixedly connected to the oscillation shaft 410, and the free ends of the blades form a loop-shaped flow guide bend towards the graphite film surface. The comb-shaped blades are arranged at equal intervals. This structure forms a sheet-like swept-in flow field on the film surface during the oscillation of the fan plate 400, which enhances the adhesion to the wall and suppresses large-scale eddies, thus helping to reduce film vibration and improve radial temperature uniformity.

[0041] In this embodiment, the surface of the rack seat 311 is provided with several C-shaped arc holes along its length. The swing shaft 410 is fitted into each of the C-shaped arc holes in a rotatable engagement manner, and achieves stable reciprocating swing under the support and limiting engagement of the rack seat 311. This structure facilitates the segmented assembly and positioning of the fan plate 400, ensures the consistency of the swing stroke, and facilitates assembly, disassembly, and maintenance.

[0042] In this embodiment, the insulation board 120 adopts a multi-layer composite structure. An infrared high-reflectivity layer is provided on the inner side of the insulation board 120, facing the heating lamp assembly 200; an insulation layer is provided on the outer side of the insulation board 120, and is fitted to the outer wall of the heating chamber 110. The infrared high-reflectivity layer is used to reflect radiation that is not absorbed by the film back into the cavity, and the insulation layer is used to reduce heat transfer to the outside, thereby achieving secondary utilization of heat and efficient insulation within the semi-enclosed cavity.

[0043] In this embodiment, the drive unit 300 and the fan plate 400 are symmetrically arranged in groups on both sides of the transmission channel, and the swing plane of each set of swing shafts 410 forms a preset angle with respect to the plane of the graphite film. By adjusting the angle between the swing plane and the film plane, the grazing micro-airflow from both sides converges and compensates in the middle region of the film, thereby further improving the radial temperature uniformity and reducing the risk of edge heat leakage.

[0044] In this embodiment, the linkage 333 and the lug 420 on the fan plate 400 are connected by a pin-elongated hole or a ball-head-groove type. This connection method is used to absorb the small displacements caused by thermal expansion and contraction and assembly tolerances, reduce lateral loads and wear, and ensure the reliability and consistency of the swing transmission of the fan plate 400.

[0045] In another embodiment, a lug 420 is disposed on the surface of the swing shaft 410, and the lug 420 is movably connected to the linkage 333. By directly disposing the lug 420 on the surface of the swing shaft 410, the need for local grooving or reinforcement of the fan plate 400 can be reduced, further simplifying the forming process of the fan plate 400, while maintaining a stable and consistent driving force path for the linkage 333. This embodiment also achieves a movable connection through a pin-elongated hole or ball-head-grooved structure to accommodate minute displacements under thermal cycling conditions and reduce wear.

[0046] During equipment operation, the mercury lamp rod 220, after being energized, undergoes radiation shaping and focusing through the lens cover 230, projecting the main radiant energy onto the effective area of ​​the thin film channel. The excitation coil 320 operates at a set frequency and duty cycle, generating an alternating electromagnetic torque at the permanent magnet head 331 to drive the oscillating head 330 to oscillate reciprocally. The oscillating head 330, via the linkage bar 333, drives the fan plate 400 to oscillate periodically around the oscillation axis 410. The comb-shaped blades of the fan plate 400 form a wall-attached, sheet-like inflow field within the semi-enclosed cavity, causing localized high-temperature air masses to spread along the thin film surface and converge in the central region under the action of the fan plates 400 on both sides. Combined with the infrared high-reflectivity layer inside the insulation plate 120, unabsorbed radiation is reflected back, allowing heat to be utilized multiple times within the cavity, thus improving the uniformity of the temperature field on the thin film surface. By adjusting the frequency of the excitation coil 320, the swing amplitude of the oscillating head 330, and the angle between the swing planes of the two side fan plates 400, uniform temperature control under different widths and different process temperatures can be achieved.

[0047] Working principle and usage process of this utility model: In this invention, a transfer channel for conveying graphite film is formed on the surface of the calender unit 100. A heating chamber 110 is fixed above it and surrounds the transfer channel to form a semi-enclosed cavity. An insulation board 120 is attached to the outer periphery of the heating chamber 110. The heating lamp assembly 200 is located inside the heating chamber 110 and above the transfer channel. The mercury lamp rod 220 generates radiation energy after being powered on. The lens cover 230 is a convex lens-shaped light-transmitting component that can be detachably connected to the lamp holder 210. Its light-emitting surface faces the graphite film, shaping and converging the radiation emitted by the mercury lamp rod 220 so that the radiation flux mainly falls on the effective heating area of ​​the film. The inner infrared high-reflectivity layer of the insulation board 120 reflects the radiation that is not absorbed by the film back into the cavity, and the outer heat insulation layer inhibits heat dissipation, thereby increasing the effective heat density in the semi-enclosed space.

[0048] The driving component 300 consists of a stationary part formed by a fixed base 310 and an excitation coil 320, and a rotating part formed by a swing head 330. A permanent magnet head 331 is mounted on the swing head 330, and springs 332 located on both sides of the swing head 330 are connected to the fixed base 310 to provide bidirectional reset force. When the excitation coil 320 is switched on or off or alternately energized, an alternating electromagnetic torque is generated at the permanent magnet head 331, driving the swing head 330 to oscillate back and forth around the axial rotating joint between the swing head 330 and the fixed base 310.

[0049] The rack seat 311 is fixedly installed below the heating lamp assembly 200 and extends along the width of the graphite film. Its surface has several C-shaped arc holes. The swing shaft 410 is fitted into each arc hole in a rotatable manner, thus achieving stable reciprocating swing under the support and limiting effect of the rack seat 311. This allows the localized high-temperature gas mass after radiation heating by the mercury lamp rod 220 to spread along the surface and converge in the central region of the film under the action of the symmetrically arranged fan plates 400 on both sides, significantly improving the temperature uniformity of the film surface and shortening the heating time. Because the semi-enclosed cavity formed by the heating chamber 110 and the insulation plate 120 restricts gas exchange with the outside, the aforementioned micro-airflow mainly circulates within the cavity, preventing increased external convective heat dissipation. Heat can be utilized multiple times within the cavity.

[0050] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A graphite film calender with heating and heat preservation functions, characterized in that, include: The unit includes a calendering mill (100), a heating lamp assembly (200), a drive unit (300), and several fan plates (400). The calender unit (100) has a transmission channel on its surface for conveying graphite film; a heating chamber (110) is fixed above the calender unit (100) for forming a semi-enclosed cavity with the transmission channel, and an insulation plate (120) is attached to the outer periphery of the heating chamber (110). The heating lamp assembly (200) is located inside the heating chamber (110) and above the transmission channel. The heating lamp assembly (200) includes a lamp holder (210) fixedly connected to the heating chamber (110), multiple mercury lamp rods (220) installed in the lamp holder (210), and a lens cover (230) covering the light-emitting side of the mercury lamp rods (220). The drive unit (300) includes a fixed base (310) fixedly connected to the heating chamber (110), an excitation coil (320) mounted on the fixed base (310), and a swing head (330) rotatably connected to the fixed base (310). The swing head (330) is provided with a permanent magnet head (331) and is reset by a spring (332). One end of the swing head (330) is fixedly connected to a linkage bar (333). The fixed base (310) has a rack seat (311) fixedly installed at the end, which is located below the heating lamp group (200) and extends along the width direction of the graphite film. The fan plate (400) has a swing shaft (410) on one side and is pivotally connected to the surface of the rack seat (311) through the swing shaft (410), and is movably connected to the surface of the linkage bar (333) through the lug (420) provided on the fan plate (400).

2. The graphite film calender with heating and heat preservation according to claim 1, characterized in that, The lens cover (230) is a light-transmitting component that can be detachably connected to the lamp holder (210), and the lens cover (230) is in the shape of a convex lens.

3. The graphite film calender with heating and heat preservation according to claim 1, characterized in that, An axial rotation pair is provided between the swing head (330) and the fixed seat (310). The spring (332) is located on both sides of the swing head (330), and its two ends are respectively connected to the swing head (330) and the fixed seat (310) to provide bidirectional restoring force.

4. The graphite film calender with heating and heat preservation according to claim 1, characterized in that, The fan plate (400) is a plurality of comb-shaped blades arranged along the width direction of the graphite film. The root of the comb-shaped blades is fixedly connected to the swing shaft (410). The free end of the blades is set to be bent in a spiral shape towards the surface of the graphite film. The comb-shaped blades are arranged at equal intervals to form a sheet-like sweeping flow field when swinging.

5. The graphite film calender with heating and heat preservation according to claim 1, characterized in that, The rack seat (311) has several C-shaped arc holes on its surface, and the swing shaft (410) is rotatably sleeved in each arc hole of the rack seat (311) so as to perform reciprocating swing.

6. The graphite film calender with heating and heat preservation according to claim 1, characterized in that, The lug (420) on the surface of the swing shaft (410) is movably connected to the surface of the linkage (333).

7. The graphite film calender with heating and heat preservation according to claim 1, characterized in that, The insulation board (120) is a multi-layer composite structure, with an infrared high reflectivity layer on the inner side and a heat insulation layer on the outer side, and is attached to the outer wall of the heating chamber (110).

8. The graphite film calender with heating and heat preservation according to claim 1, characterized in that, The drive unit (300) and the fan plate (400) are symmetrically arranged in groups on both sides of the transmission channel, and the swing plane of each group of swing shafts (410) forms an angle with respect to the plane of the graphite film.

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