A carbon paper hot-pressing curing production line
By designing a carbon paper hot-press curing production line that combines multi-stage rolling and flat pressing, the problems of insufficient thinness, flatness, and strength of carbon paper in traditional processes have been solved, and high-quality carbon paper calendering production has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional carbon paper hot pressing and curing processes have problems such as difficulty in calendering carbon paper in one go, poor surface flatness, and failure of internal resin to cure in time, resulting in low strength of carbon paper and inability to achieve high-quality calendering production.
The structure design combines multi-stage roller pressing and flat pressing. By gradually reducing the gap between the pressure rollers and applying continuous pressure, combined with heating and air cooling units, the carbon paper is uniformly thinned and its surface flatness is improved. The hot pressing time is extended to promote resin curing.
It has enabled high-quality calendering production of carbon paper, with comprehensive improvements in thinness, flatness and strength, solving the problem of high-quality calendering of carbon paper in traditional processes.
Smart Images
Figure CN224304686U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fuel cell technology, specifically providing a carbon paper hot-press curing production line. Background Technology
[0002] Carbon paper is an important component of hydrogen fuel cells, playing a role in transferring water vapor, electrons, and heat. The preparation of carbon paper is characterized by numerous and complex processes.
[0003] Hot pressing is a crucial step in carbon paper production. Through hot pressing, the carbon paper is thinned and flattened to improve its strength, flatness, and reduce its resistivity. Traditional hot pressing processes are primarily completed using roller pressing mechanisms or steel strip presses.
[0004] The roller pressing mechanism is easy to operate, and calendering is carried out by adjusting the temperature, gap and pressure of the rollers. However, the following problems are likely to occur in actual operation: it is difficult to calender the carbon paper in one go and it is difficult to press it thin; the surface of the carbon paper after pressing is not smooth and wrinkles are easy to appear; the hot pressing time of the carbon paper is extremely short, and the resin inside the carbon paper does not have time to cure, resulting in low strength of the carbon paper.
[0005] Steel belt presses can achieve continuous long-term planar calendering, resulting in high surface flatness of carbon paper. However, during the calendering process, organic vapors volatilized from the carbon paper at high temperatures and aldehydes produced by resin decomposition are trapped by the upper and lower steel belts and cannot be discharged quickly. This makes it difficult to press the carbon paper thin and compact. Even if the pressure is increased, the effect is not good. Instead, it is easy to squeeze out the resin from the carbon paper, affecting the strength of the carbon paper.
[0006] These problems severely restrict the high-quality calendering production of carbon paper. Therefore, those skilled in the art urgently need a carbon paper hot-pressing and curing production line to solve the current problem of the inability to produce high-quality carbon paper through calendering. Utility Model Content
[0007] The purpose of this application is to provide a carbon paper hot pressing and curing production line to solve the current problem that carbon paper cannot be produced with high quality through calendering.
[0008] To solve the above-mentioned technical problems, this application provides a carbon paper hot-press curing production line, comprising:
[0009] A roller pressing unit, comprising a plurality of roller pressing mechanisms arranged sequentially in a front-to-back direction, each roller pressing mechanism including an upper pressure roller and a lower pressure roller, wherein there is a pressure roller gap between the upper pressure roller and the lower pressure roller for carbon paper to pass through, and the distance between the upper pressure roller and the lower pressure roller is adjustable;
[0010] A flat pressing unit is located at the rear end of the roll pressing unit. The flat pressing unit includes an upper pressing belt and a lower pressing belt. There is a calendering space between the lower horizontal section of the upper pressing belt and the upper horizontal section of the lower pressing belt for the carbon paper to pass through.
[0011] Wherein, the front-back direction is the direction of movement of the carbon paper.
[0012] The carbon paper hot-press curing production line provided in this application adopts a multi-stage rolling and flat-press structural design, solving the problems of traditional single-process production and achieving high-quality calendering production of carbon paper. Specifically, the carbon paper hot-press curing production line includes a rolling unit at the front end, which includes multiple rolling mechanisms arranged sequentially in the front-to-back direction. Each rolling mechanism includes an upper pressure roller and a lower pressure roller, with a gap between them for the carbon paper to pass through. The distance between the upper and lower pressure rollers is adjustable. During operation, the distance between the upper and lower pressure rollers in different rolling mechanisms can be adjusted so that the distance between the upper and lower pressure rollers gradually decreases from front to back. Through the progressively smaller gap, the thickness of the carbon paper is uniformly reduced in stages, avoiding the problems associated with single-stage processes. To address the issue of insufficient thickness due to incomplete calendering during the initial rolling process, multiple rolling mechanisms work together to extend the hot-pressing time, promoting resin curing and improving the strength of the carbon paper. Simultaneously, the flattening unit at the rear end creates a calendering space between the lower horizontal section of the upper pressure belt and the upper horizontal section of the lower pressure belt. During continuous pressure application, the carbon paper is flattened and cured, maintaining its flat shape and improving its surface smoothness. Furthermore, since the front-end rolling unit has already achieved preliminary venting, it effectively avoids the problem of reduced density caused by gas retention, ensuring the strength of the carbon paper.
[0013] Therefore, the integrated rolling and flat pressing processes of the carbon paper hot pressing curing production line provided in this application embodiment achieve a comprehensive improvement in the thinness, flatness, and curing strength of carbon paper during the calendering process, solving the current problem that carbon paper cannot be produced with high quality during calendering.
[0014] Optionally, the rolling mechanism further includes:
[0015] A heating element for heating the upper pressure roller and / or the lower pressure roller;
[0016] The front support roller is located at the front end of the upper pressure roller and the lower pressure roller. With the gap between the pressure rollers as the boundary, the front support roller is located on the side closer to the upper pressure roller. In the working state, the upper pressure roller is in contact with the upper wall of the carbon paper, and the front support roller is in contact with the lower wall of the carbon paper.
[0017] Alternatively, the front support roller is located on the side close to the lower pressure roller. In the working state, the lower pressure roller is in contact with the lower wall of the carbon paper, and the front support roller is in contact with the upper wall of the carbon paper.
[0018] Optionally, the rolling mechanism further includes:
[0019] The rear support roller is located at the rear end of the upper pressure roller and the lower pressure roller. With the gap between the pressure rollers as the boundary, the rear support roller is located on the side closer to the upper pressure roller. In the working state, the upper pressure roller is in contact with the upper wall of the carbon paper, and the rear support roller is in contact with the lower wall of the carbon paper.
[0020] An air-cooling unit is disposed between the outlet end of the gap between the pressure rollers and the rear support roller.
[0021] Optionally, the rolling unit further includes:
[0022] A suspension roller mechanism is disposed between two adjacent roller pressing mechanisms. The suspension roller mechanism includes a suspension roller and a position sensor. The position of the suspension roller is adjustable along the height direction. The position sensor is used to detect the position of the suspension roller. In the working state, the suspension roller is in contact with the upper wall of the carbon paper.
[0023] Optionally, the suspension roller mechanism further includes:
[0024] Multiple counterweights of different weights, any one of which can be connected to the lower end of the suspension roller.
[0025] Optionally, the pressure-applying unit further includes two pressure-applying mechanisms, each comprising:
[0026] A chain blanket mechanism, the chain blanket mechanism including a rotatable chain blanket, wherein the upper end of the chain blanket is in rolling contact with the upper surface of the lower horizontal section of the upper pressure belt, and the lower end of the chain blanket is in rolling contact with the lower surface of the upper horizontal section of the lower pressure belt;
[0027] The pressure plate mechanism is located at the upper end and presses against the upper surface of the corresponding lower section of the chain carpet, and the pressure plate mechanism located at the lower end and presses against the lower surface of the corresponding upper section of the chain carpet. The position of the pressure plate mechanism located at the upper end is adjustable along the height direction.
[0028] Optionally, the pressure plate mechanism includes a plurality of first pressure plates arranged sequentially in the front-to-back direction, wherein the temperature of the first pressure plates increases and is kept warm sequentially from front to back.
[0029] Optionally, the pressure plate mechanism further includes a plurality of second pressure plates arranged sequentially in the front-to-back direction. The second pressure plates are located at the rear end of the first pressure plate, and the temperature of the second pressure plates decreases sequentially from front to back.
[0030] Optionally, the rolling mechanism further includes:
[0031] A thickness gauge is installed at the exit end of the gap between the pressure rollers and at the exit end of the calendering space.
[0032] Optionally, the carbon paper hot-press curing production line further includes:
[0033] An unwinding shaft and a rewinding shaft, wherein the two ends of the carbon paper are wound around the unwinding shaft and the rewinding shaft;
[0034] Three tension detection devices are provided for detecting the tension of the carbon paper. One tension detection device is located at one end near the unwinding shaft, one tension detection device is located between the rolling unit and the flattening unit, and one tension detection device is located at one end near the take-up shaft. Attached Figure Description
[0035] Figure 1 A schematic diagram of a specific embodiment of the carbon paper hot-pressing curing production line provided in this application;
[0036] in, Figure 1 The accompanying figure labels are as follows:
[0037] 1-Roller pressing unit; 11-Roller pressing mechanism; 111-Upper pressure roller; 112-Lower pressure roller; 113-Lifting mechanism; 114-Front support roller; 115-Rear support roller; 116-Air cooling unit; 12-Suspension roller mechanism; 121-Suspension roller; 122-Position sensor; 123-Counterweight; 124-Slide rail; a-Pressure roller gap;
[0038] 2-Flat pressing unit; 21-Upper pressing belt; 211-Lower horizontal section; 22-Lower pressing belt; 221-Upper horizontal section; 23-Drive roller; 24-Directional roller; 25-Chain blanket mechanism; 251-Chain blanket; 2511-Lower section; 2512-Upper section; 26-Pressure plate mechanism; 261-First pressure plate; 262-Second pressure plate; 27-Drive mechanism; 28-First idler roller; 29-Second idler roller; 201-Tensioning mechanism; b-Caulking space;
[0039] 3-Unwind the reel;
[0040] 4-Rewind spool;
[0041] 5-Tension testing device;
[0042] 6-Adjustment mechanism;
[0043] A-Thickness gauge;
[0044] 01-Carbon paper. Detailed Implementation
[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0046] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0047] It should be understood that the phrase "some embodiments" throughout the specification means that a particular feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.
[0048] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0049] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a specific embodiment of the carbon paper hot-press curing production line provided in this application.
[0050] This application provides a carbon paper hot-press curing production line, including:
[0051] Roller pressing unit 1, roller pressing unit 1 includes a plurality of roller pressing mechanisms 11 arranged sequentially in the front-back direction. Roller pressing mechanism 11 includes an upper pressing roller 111 and a lower pressing roller 112. There is a roller gap a between the upper pressing roller 111 and the lower pressing roller 112 for carbon paper 01 to pass through. The distance between the upper pressing roller 111 and the lower pressing roller 112 is adjustable.
[0052] Flat pressing unit 2 is located at the rear end of rolling pressing unit 1. Flat pressing unit 2 includes upper pressing belt 21 and lower pressing belt 22. There is a calendering space b between the lower horizontal section 211 of upper pressing belt 21 and the upper horizontal section 221 of lower pressing belt 22 for carbon paper 01 to pass through.
[0053] The forward and backward directions are the directions of motion of the carbon paper 01.
[0054] The carbon paper hot-press curing production line provided in this application adopts a multi-stage rolling and flat-pressing structure design to solve the problems of traditional single processes and achieve high-quality calendering production of carbon paper 01. Specifically, the carbon paper hot-press curing production line includes a rolling unit 1 at the front end. The rolling unit 1 includes multiple rolling mechanisms 11 arranged sequentially in the front-to-back direction. Each rolling mechanism 11 includes an upper pressure roller 111 and a lower pressure roller 112. There is a roller gap a between the upper pressure roller 111 and the lower pressure roller 112 for the carbon paper 01 to pass through. The distance between the upper pressure roller 111 and the lower pressure roller 112 is adjustable. During operation, the distance between the upper pressure roller 111 and the lower pressure roller 112 in different rolling mechanisms 11 can be adjusted so that the distance between the upper pressure roller 111 and the lower pressure roller 112 gradually decreases from front to back. Through the progressively decreasing roller gap a, the thickness of the carbon paper 01 is achieved in stages. Uniform thinning avoids the problem of insufficient thinness due to incomplete calendering in a single roll pressing. It also extends the hot pressing time through the coordinated work of multiple roll pressing mechanisms 11, promoting resin curing and improving the strength of carbon paper 01. At the same time, the flat pressing unit 2 at the rear end forms a calendering space b between the lower horizontal section 211 of the upper pressing belt 21 and the upper horizontal section 221 of the lower pressing belt 22. During continuous pressure application, the carbon paper 01 is flattened and cured, maintaining the flat shape of the carbon paper 01 and improving the surface flatness of the carbon paper 01. Furthermore, since the front roll pressing unit 1 has achieved preliminary venting, it can effectively avoid the problem of reduced density caused by gas retention, ensuring the strength of carbon paper 01.
[0055] Therefore, it can be seen that the integrated rolling and flat pressing processes of the carbon paper hot pressing curing production line provided in this application embodiment achieve a comprehensive improvement in the thinness, flatness and curing strength of carbon paper 01 during calendering, solving the current problem that carbon paper cannot be calendered to a high quality.
[0056] It should be noted that the roller pressing unit 1 includes multiple roller pressing mechanisms 11, meaning that the roller pressing unit 1 includes at least two roller pressing mechanisms 11. Preferably, the roller pressing unit 1 includes three or more roller pressing mechanisms 11.
[0057] In the embodiments of this application, the roller pressing mechanism 11 further includes two servo motors (not shown in the figure), one of which is connected to the upper pressing roller 111 and the other is connected to the lower pressing roller 112. The servo motors are used to drive the upper pressing roller 111 and the lower pressing roller 112 to operate, so that the rotational speed of the upper pressing roller 111 and the lower pressing roller 112 is controllable.
[0058] In the embodiments of this application, the surfaces of the upper pressure roller 111 and the lower pressure roller 112 are coated with an anti-corrosion, wear-resistant and anti-sticking layer (not shown in the figure).
[0059] As described above, the corrosion resistance of the anti-corrosion, wear-resistant, and anti-stick layer can protect the surfaces of the upper pressure roller 111 and lower pressure roller 112 from corrosion, extending their service life. The wear resistance of the anti-corrosion, wear-resistant, and anti-stick layer can enhance the wear resistance of the surfaces of the upper pressure roller 111 and lower pressure roller 112, reducing surface wear caused by friction, thereby maintaining the long-term stability of the upper pressure roller 111 and lower pressure roller 112. The anti-stick properties of the anti-corrosion, wear-resistant, and anti-stick layer can reduce the adhesion between the upper pressure roller 111 and lower pressure roller 112 and the carbon paper 01, preventing the carbon paper 01 from adhering to the surfaces of the upper pressure roller 111 and lower pressure roller 112 during the hot-pressing curing process. This allows for direct hot-pressing curing of the carbon paper 01 without the need for upper and lower protective films, minimizing the impact of the protective film on the surface quality of the carbon paper 01 and reducing production costs.
[0060] Specifically, the anti-corrosion, wear-resistant, and non-stick layer can be a polytetrafluoroethylene (PTFE) coating, etc.
[0061] As mentioned above, the distance between the upper pressure roller 111 and the lower pressure roller 112 is adjustable. Specifically, in the embodiments of this application, the roller pressing mechanism 11 further includes a set of lifting mechanisms 113. The lower pressure roller 112 is connected to the lifting mechanism 113. The lifting mechanism 113 is used to drive the lower pressure roller 112 to move closer to or away from the upper pressure roller 111, thereby realizing that the distance between the upper pressure roller 111 and the lower pressure roller 112 is adjustable.
[0062] The lifting mechanism 113 can be implemented in various ways. For example, in some embodiments, the lifting mechanism 113 can be a driving unit such as a hydraulic cylinder / electric cylinder that can generate linear displacement. The output shaft of the hydraulic cylinder / electric cylinder moves along the height direction. The supports at both ends of the lower pressure roller 112 are connected to the output shaft of the hydraulic cylinder / electric cylinder. The extension or retraction of the output shaft of the hydraulic cylinder / electric cylinder can drive the lower pressure roller 112 to move along the height direction.
[0063] Please continue to refer to this. Figure 1 In some embodiments of this application, the roller pressing mechanism 11 further includes;
[0064] Heating elements are used to heat the upper pressure roller 111 and / or the lower pressure roller 112;
[0065] The front support roller 114 is located at the front end of the upper pressure roller 111 and the lower pressure roller 112. The gap a between the upper pressure roller 111 and the lower pressure roller 112 is used as the boundary. The front support roller 114 is located on the side closer to the upper pressure roller 111. In the working state, the upper pressure roller 111 is in contact with the upper wall of the carbon paper 01, and the front support roller 114 is in contact with the lower wall of the carbon paper 01.
[0066] Alternatively, the front support roller 114 is located on the side close to the lower pressure roller 112. In the working state, the lower pressure roller 112 is in contact with the lower wall of the carbon paper 01, and the front support roller 114 is in contact with the upper wall of the carbon paper 01.
[0067] As set up above, the heating element is used to heat the upper pressure roller 111 and / or the lower pressure roller 112, so that the temperature of the upper pressure roller 111 and / or the lower pressure roller 112 is controllable, thereby enabling the carbon paper 01 to obtain a uniform heat distribution during the rolling process; taking the front support roller 114 located on the side close to the upper pressure roller 111 as an example, the function of the front support roller 114 is to allow the carbon paper 01 to gradually enter the rolling mechanism 11 along the upper pressure roller 111, and use the upper pressure roller 111 to preheat and soften the carbon paper 01 to prevent wrinkling during calendering.
[0068] The heating element can be implemented in various ways. In some embodiments, the heating element is an electromagnetic heating system that uses electromagnetic induction to heat the upper pressure roller 111 and / or the lower pressure roller 112. The specific structure and working principle of the electromagnetic heating system are well known to those skilled in the art and will not be described in detail here.
[0069] Furthermore, in some embodiments of this application, the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the front support roller 114 and the upper pressure roller 111 ranges from 30° to 60°.
[0070] Verification has shown that if the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the front support roller 114 and the upper pressure roller 111 is less than 30°, the contact path between the carbon paper 01 and the upper pressure roller 111 when the carbon paper 01 enters the rolling mechanism 11 will be too short, the preheating of the carbon paper 01 will be insufficient, the carbon paper 01 will not soften sufficiently, and the surface of the carbon paper 01 will easily wrinkle during the calendering process. If the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the front support roller 114 and the upper pressure roller 111 is greater than 60°, the excessive tilt angle will cause the carbon paper 01 to be subjected to excessive shear force when it enters the rolling mechanism 11, and the carbon paper 01 may break and fail. Based on this, in some embodiments of this application, the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the front support roller 114 and the upper pressure roller 111 has the above-mentioned range of values. Specifically, the angle can be 30°, 40°, 45°, 50°, 60°, etc., which ensures that the carbon paper 01 is preheated sufficiently, prevents the surface of the carbon paper 01 from wrinkling during the calendering process as much as possible, and reduces the shear force on the carbon paper 01 when it enters the rolling mechanism 11, so as to avoid problems such as breakage and failure of the carbon paper 01.
[0071] Please continue to refer to this. Figure 1 In some embodiments of this application, the rolling mechanism 11 further includes:
[0072] The rear support roller 115 is located at the rear end of the upper pressure roller 111 and the lower pressure roller 112. With the gap a between the pressure rollers as the boundary, the rear support roller 115 is located on the side closer to the upper pressure roller 111. In the working state, the upper pressure roller 111 is in contact with the upper wall of the carbon paper 01, and the rear support roller 115 is in contact with the lower wall of the carbon paper 01.
[0073] Air-cooling unit 116 is disposed between the outlet end of the pressure roller gap a and the rear support roller 115.
[0074] As set up above, the function of the air-cooling unit 116 is to cool and shape the carbon paper 01 the instant it leaves the rolling mechanism 11, so as to avoid the carbon paper 01 being torn due to the resin being in a molten state. The air volume of the air-cooling unit 116 is controllable, and the cooling intensity of the air-cooling unit 116 can be adjusted according to process requirements, which helps to accurately control the cooling rate of the carbon paper 01. Taking the rear support roller 115 located on the side close to the upper pressure roller 111 as an example, the function of the rear support roller 115 is to allow the carbon paper 01 to gradually leave the rolling mechanism 11 while adhering to the upper pressure roller 111. The upper pressure roller 111 provides physical support for the carbon paper 01, preventing the carbon paper 01 from being disturbed or wrinkled instantly when leaving the rolling mechanism 11 under the action of the air-cooling unit 116.
[0075] The specific structure and working principle of the air-cooled unit 116 are existing technologies well known to those skilled in the art, and will not be described in detail here.
[0076] In some embodiments of this application, the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the rear support roller 115 and the upper pressure roller 111 ranges from 30° to 60°.
[0077] Verification has shown that if the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the rear support roller 115 and the upper pressure roller 111 is less than 30°, the contact area between the carbon paper 01 and the upper pressure roller 111 when the carbon paper 01 leaves the roller pressing mechanism 11 will be too small, and the carbon paper 01 may experience disturbance and instantaneous wrinkling under the action of the air cooling unit 116. If the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the rear support roller 115 and the upper pressure roller 111 is greater than 60°, the excessive tilt angle will cause the carbon paper 01 to be subjected to excessive shear force when it leaves the roller pressing mechanism 11, and the carbon paper 01 may break and fail. Based on this, in some embodiments of this application, the angle between the extension direction and the front-back direction of the carbon paper 01 located between the rear support roller 115 and the upper pressure roller 111 has the above range of values. Specifically, the angle can be 30°, 40°, 45°, 50°, 60°, etc. This prevents the carbon paper 01 from being disturbed and instantly wrinkled under the action of the air-cooling unit 116, while reducing the shear force on the carbon paper 01 when it leaves the roller pressing mechanism 11, and avoiding the carbon paper 01 from breaking or failing as much as possible.
[0078] Please continue to refer to this. Figure 1 In some embodiments of this application, the rolling unit 1 further includes:
[0079] The suspension roller mechanism 12 is disposed between two adjacent roller pressing mechanisms 11. The suspension roller mechanism 12 includes a suspension roller 121 and a position sensor 122. The position of the suspension roller 121 is adjustable along the height direction. The position sensor 122 is used to detect the position of the suspension roller 121. In the working state, the suspension roller 121 is in contact with the upper wall of the carbon paper 01.
[0080] The above-mentioned suspension roller mechanism 12 enables high-precision synchronous operation of multiple roller pressing mechanisms 11, avoiding problems such as loosening and deviation or breakage due to excessive tension of the carbon paper 01 during operation. The specific control principle is as follows:
[0081] Using the operating speed of the foremost roller pressing mechanism 11 as the reference speed, the other roller pressing mechanisms 11 operate synchronously with it. If one of the roller pressing mechanisms 11 runs too slowly, the carbon paper 01 at its front end will loosen, and the suspension roller 121 will move downwards. At this time, the corresponding position sensor 122 will detect the position of the suspension roller 121. Based on the detection result of the position sensor 122, the controller can control the roller pressing mechanism 11 to gradually increase its speed, the carbon paper 01 at its front end will gradually tighten, and the suspension roller 121 will move upwards. When the suspension roller 121 rises to the desired position, the roller pressing mechanism 11 stops increasing its speed, using the speed of the previous roller pressing mechanism 11 at this moment as the reference. To maintain synchronized operation; if one of the roller pressing mechanisms 11 runs too fast, the carbon paper 01 at its front end will become taut, and the suspension roller 121 will move upward. At this time, the corresponding position sensor 122 will detect the position of the suspension roller 121. The controller can control the roller pressing mechanism 11 to gradually slow down based on the detection result of the position sensor 122, and the carbon paper 01 at its front end will gradually relax, and the suspension roller 121 will move downward. When the suspension roller 121 descends to the required position, the controller controls the roller pressing mechanism 11 to stop slowing down, and uses the speed of the previous roller pressing mechanism 11 at this moment as a reference to maintain synchronized operation with it, thus achieving high-precision synchronized operation of multiple roller pressing mechanisms 11.
[0082] Specifically, the position sensor 122 can be a displacement sensor, which obtains the position of the suspension roller 121 by detecting the displacement of the suspension roller 121 along the height direction.
[0083] Please continue to refer to this. Figure 1 In some embodiments of this application, the suspension roller mechanism 12 further includes:
[0084] Multiple counterweights 123 of different weights, any one of which can be connected to the lower end of the suspension roller 121.
[0085] As set up above, the tension of the carbon paper 01 can be adjusted by changing the weight of the counterweight 123. If the carbon paper 01 is in a relaxed state and the tension of the carbon paper 01 is too small, a counterweight 123 with a larger weight can be replaced to increase the tension of the carbon paper 01. If the carbon paper 01 is in a taut state and the tension of the carbon paper 01 is too large, a counterweight 123 with a smaller weight can be replaced to reduce the tension of the carbon paper 01, ensuring that the tension of the carbon paper 01 is within the required range.
[0086] Among them, such as Figure 1 As shown, the suspension roller mechanism 12 also includes a slide rail 124 extending along the height direction. The two support ends of the suspension roller 121 are slidably disposed in the slide rail 124. The slide rail 124 plays a guiding and limiting role for the suspension roller 121, thereby improving the positional accuracy of the suspension roller 121.
[0087] Furthermore, in some embodiments of this application, the surfaces of the upper pressure belt 21 and the lower pressure belt 22 are coated with an anti-corrosion, wear-resistant, and anti-stick layer (not shown in the figure).
[0088] As described above, the corrosion resistance of the anti-corrosion, wear-resistant, and anti-stick layer can protect the surfaces of the upper pressure belt 21 and lower pressure belt 22 from corrosion, extending their service life. The wear resistance of the anti-corrosion, wear-resistant, and anti-stick layer can enhance the wear resistance of the surfaces of the upper pressure belt 21 and lower pressure belt 22, reducing surface wear caused by friction, thereby maintaining the long-term stability of the upper pressure belt 21 and lower pressure belt 22. The anti-stick properties of the anti-corrosion, wear-resistant, and anti-stick layer can reduce the adhesion between the upper pressure belt 21, lower pressure belt 22, and carbon paper 01, preventing carbon paper 01 from adhering to the surfaces of the upper pressure belt 21 and lower pressure belt 22 during hot-pressing curing. This allows for direct hot-pressing curing of the carbon paper 01 without the need for upper and lower protective films, minimizing the impact of the protective film on the surface quality of the carbon paper 01 and reducing production costs.
[0089] Please continue to refer to this. Figure 1 In some embodiments of this application, the flattening unit 2 further includes:
[0090] Two drive rollers 23 and two steering rollers 24 are distributed along the height direction. The two drive rollers 23 are distributed along the height direction. The upper pressure belt 21 is wound around the upper drive rollers 23 and steering rollers 24, and the lower pressure belt 22 is wound around the lower drive rollers 23 and steering rollers 24.
[0091] Two servo motors are connected to the drive roller 23. The servo motors are used to drive the drive roller 23 to rotate, thereby realizing the operation of the upper pressure belt 21 and the lower pressure belt 22.
[0092] Please continue to refer to this. Figure 1 In some embodiments of this application, the flattening unit 2 further includes:
[0093] Tensioning mechanism 201 is connected to the corresponding steering roller 24. Tensioning mechanism 201 is used to drive steering roller 24 to move closer to or further away from driving roller 23.
[0094] As set above, the function of the tensioning mechanism 201 is to adjust the tension of the upper pressure belt 21 or the lower pressure belt 22. If the upper pressure belt 21 or the lower pressure belt 22 is in a slack state, the tensioning mechanism 201 can drive the steering roller 24 to move away from the drive roller 23, so that the upper pressure belt 21 or the lower pressure belt 22 is tensioned, ensuring the reliable operation of the upper pressure belt 21 or the lower pressure belt 22.
[0095] Please continue to refer to this. Figure 1 In some embodiments of this application, the flattening unit 2 further includes two pressure applying mechanisms, which include:
[0096] Chain blanket mechanism 25, the chain blanket mechanism 25 includes a rotatable chain blanket 251, the upper surface of the chain blanket 251 located at the upper end is in rolling contact with the upper surface of the lower horizontal section 211 of the upper pressure belt 21, and the lower surface of the chain blanket 251 located at the lower end is in rolling contact with the lower surface of the upper horizontal section 221 of the lower pressure belt 22.
[0097] The pressure plate mechanism 26 is located at the upper end and presses against the upper surface of the lower section 2511 of the corresponding chain blanket 251. The pressure plate mechanism 26 located at the lower end presses against the lower surface of the upper section 2512 of the corresponding chain blanket 251. The position of the pressure plate mechanism 26 located at the upper end is adjustable along the height direction.
[0098] As configured above, the chain mat 251 serves as the medium for pressure transmission, enabling the pressure of the pressure plate mechanism 26 to be applied more evenly to the lower horizontal section 211 and the upper horizontal section 221. This, in turn, flattens and solidifies the carbon paper 01 during continuous pressure application, improving the surface flatness of the carbon paper 01. The chain mat 251 at the upper end and the upper surface of the lower horizontal section 211 of the upper pressure belt 21 are in rolling contact, and the chain mat 251 at the lower end and the lower surface of the upper horizontal section 221 of the lower pressure belt 22 are in rolling contact. This reduces the friction between the upper surface of the chain mat 251 and the lower surface of the lower horizontal section 211, and between the chain mat 251 and the lower surface of the upper horizontal section 221, improving the smooth operation of the upper pressure belt 21 and the lower pressure belt 22. The position of the pressure plate mechanism 26 at the upper end is adjustable along the height direction, meaning that the pressure applied to the chain mat 251 can be changed by adjusting the position of the pressure plate mechanism 26, thereby adjusting the pressure on the carbon paper 01.
[0099] The position of the upper pressure plate mechanism 26 is adjustable along the height direction. Specifically, the pressure applying mechanism is a drive mechanism 27 arranged along the height direction. The drive mechanism 27 can be a power unit that can generate linear displacement, such as a hydraulic cylinder or electric cylinder. The output shaft of the drive mechanism 27 is connected to the corresponding pressure plate mechanism 26. The extension or retraction of the output shaft of the drive mechanism 27 can drive the corresponding pressure plate mechanism 26 to move along the height direction.
[0100] Furthermore, in some embodiments, the drive mechanism 27 is equipped with a displacement sensor and a pressure sensor to provide real-time feedback on the output displacement and working pressure of the drive mechanism 27, thereby achieving constant pressure control during the hot pressing process of carbon paper 01.
[0101] Furthermore, the pressure plate mechanism 26 includes a plurality of first pressure plates 261 arranged sequentially in the front-to-back direction, and the temperature of the first pressure plates 261 increases and is kept warm sequentially from front to back.
[0102] As set up above, the first pressure plate 261 forms a heating element, which transfers heat to the carbon paper 01 through the upper pressure belt 21 or the lower pressure belt 22. During this process, the resin inside the carbon paper 01 gradually melts, flows, cross-links and solidifies, the thickness of the carbon paper 01 becomes uniform, the surface of the carbon paper 01 becomes flat, and the strength is improved.
[0103] The first pressure plate 261 can be equipped with a flow channel inside. Each first pressure plate 261 is heated by oil circulation, and the oil temperature is independently controllable, so as to realize independent temperature control of each first pressure plate 261.
[0104] Furthermore, the pressure plate mechanism 26 also includes a plurality of second pressure plates 262 arranged sequentially in the front-back direction. The second pressure plates 262 are located at the rear end of the first pressure plate 261, and the temperature of the second pressure plates 262 decreases sequentially from front to back.
[0105] As set above, the temperature of the second pressure plate 262 is controlled to decrease from front to back to room temperature. The second pressure plate 262 forms a cooling element, which carries away the heat of the carbon paper 01 through the upper pressure belt 21 or the lower pressure belt 22, preventing the carbon paper 01 from cooling down rapidly after hot pressing, causing stress concentration and deformation problems, and affecting the flatness of the carbon paper 01.
[0106] The second pressure plate 262 can be equipped with flow channels inside, and each second pressure plate 262 is cooled by water circulation. The water temperature is independently controllable, so as to realize independent temperature control of each second pressure plate 262.
[0107] In some embodiments, both the first pressure plate 261 and the second pressure plate 262 are high-strength wear-resistant alloy plates. Using high-strength wear-resistant alloy plates as pressure plates can significantly improve the strength and wear resistance of the first pressure plate 261 and the second pressure plate 262, enabling them to withstand greater pressure and resist long-term friction with the chain carpet 251, thereby reducing wear and extending the service life of the first pressure plate 261 and the second pressure plate 262.
[0108] Depend on Figure 1 It can be seen that there are multiple drive mechanisms 27. The first pressure plate 261 at the top is connected to the drive mechanism 27 in a one-to-one correspondence, and the second pressure plate 262 at the top is connected to the drive mechanism 27 in a one-to-one correspondence.
[0109] Please continue to refer to this. Figure 1 In some embodiments of this application, the steering roller 24 is located at the front end of the drive roller 23, and the flattening unit 2 further includes:
[0110] Heating element for heating the steering roller 24;
[0111] The first idler roller 28 is located at the front end of the guide roller 24, with the calendering space b between the lower horizontal section 211 and the upper horizontal section 221 as the boundary. The first idler roller 28 is located on the side close to the upper guide roller 24. In the working state, the first idler roller 28 is in contact with the lower wall of the carbon paper 01, and the upper guide roller 24 is in contact with the upper wall of the carbon paper 01.
[0112] Alternatively, the first idler roller 28 is located on the side near the lower guide roller 24. In the working state, the first idler roller 28 is in contact with the upper wall of the carbon paper 01, and the lower guide roller 24 is in contact with the lower wall of the carbon paper 01.
[0113] Taking the first roller 28 located on the side close to the upper steering roller 24 as an example, the function of the first roller 28 is to allow the carbon paper 01 to gradually enter the flat pressing unit 2 along the upper steering roller 24, increasing the contact area between the carbon paper 01 and the upper steering roller 24. The steering roller 24 can preheat the carbon paper 01 entering the flat pressing unit 2, softening the carbon paper 01, so that the carbon paper 01 can be flattened and solidified during the continuous pressure of the upper pressure belt 21 and the lower pressure belt 22, thereby improving the surface flatness of the carbon paper 01.
[0114] The heating element can be implemented in various ways. In some embodiments, the heating element is an electromagnetic heating system that uses electromagnetic induction to heat the steering roller 24. The specific structure and working principle of the electromagnetic heating system are well-known to those skilled in the art and will not be described in detail here.
[0115] In some embodiments of this application, the angle between the extension direction and the front-back direction of the carbon paper 01 located between the first idler roller 28 and the guide roller 24 ranges from 30° to 60°.
[0116] Verification showed that if the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the first idler roller 28 and the guide roller 24 is less than 30°, the contact path between the carbon paper 01 and the guide roller 24 when the carbon paper 01 enters the flat pressing unit 2 is too short, the preheating of the carbon paper 01 is insufficient, the carbon paper 01 is not sufficiently softened, and the effect on improving the surface flatness of the carbon paper 01 is limited. If the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the first idler roller 28 and the guide roller 24 is greater than 60°, the excessive tilt angle causes the carbon paper 01 to be subjected to excessive shearing force when it enters the flat pressing unit 2, and the carbon paper 01 may break and fail. Based on this, in some embodiments of this application, the angle between the extension direction and the front-back direction of the carbon paper 01 located between the first idler roller 28 and the guide roller 24 has the above-mentioned range of values. Specifically, the angle can be 30°, 40°, 45°, 50°, 60°, etc., which ensures that the carbon paper 01 is preheated sufficiently, improves the surface flatness of the carbon paper 01 as much as possible, and reduces the shear force on the carbon paper 01 when it enters the flat pressing unit 2, so as to avoid problems such as breakage and failure of the carbon paper 01.
[0117] Please continue to refer to this. Figure 1 In some embodiments of this application, the flattening unit 2 further includes:
[0118] The second idler roller 29 is located at the rear end of the drive roller 23, with the calendering space b between the lower horizontal section 211 and the upper horizontal section 221 as the boundary. The second idler roller 29 is located on the side close to the upper drive roller 23. In the working state, the second idler roller 29 is in contact with the lower wall of the carbon paper 01, and the upper drive roller 23 is in contact with the upper wall of the carbon paper 01.
[0119] Alternatively, the second idler roller 29 is located on the side near the lower drive roller 23. In the working state, the second idler roller 29 is in contact with the upper wall of the carbon paper 01, and the lower drive roller 23 is in contact with the lower wall of the carbon paper 01.
[0120] As set up above, the function of the second roller 29 is to allow the carbon paper 01 to gradually leave the flat pressing unit 2 while adhering to the upper drive roller 23 or the lower drive roller 23. The upper drive roller 23 or the lower drive roller 23 provides physical support for the carbon paper 01, preventing disturbance and instantaneous wrinkling when the carbon paper 01 leaves the flat pressing unit 2.
[0121] In some embodiments of this application, the angle between the extension direction and the front-back direction of the carbon paper 01 located between the second idler roller 29 and the drive roller 23 ranges from 30° to 60°.
[0122] Verification showed that if the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the second idler roller 29 and the drive roller 23 is less than 30°, the contact area between the carbon paper 01 and the drive roller 23 when leaving the flat pressing unit 2 will be too small, and the carbon paper 01 may experience disturbance and instantaneous wrinkling when leaving the flat pressing unit 2. If the angle between the extension direction and the front-to-back direction of the carbon paper 01 located between the second idler roller 29 and the drive roller 23 is greater than 60°, the excessive tilt angle will cause the carbon paper 01 to be subjected to excessive shear force when leaving the flat pressing unit 2, and the carbon paper 01 may break and fail. Based on this, in some embodiments of this application, the angle between the extension direction and the front-back direction of the carbon paper 01 located between the second idler roller 29 and the drive roller 23 has the above-mentioned range of values. Specifically, the angle can be 30°, 40°, 45°, 50°, 60°, etc., which not only prevents the carbon paper 01 from being disturbed and instantly wrinkled when leaving the flat pressing unit 2, but also reduces the shear force on the carbon paper 01 when leaving the flat pressing unit 2, and avoids the carbon paper 01 from breaking or failing as much as possible.
[0123] Please continue to refer to this. Figure 1 In some embodiments of this application, the flattening unit 2 further includes:
[0124] Thickness gauge A is set at the exit end of the calendering space b.
[0125] Furthermore, such as Figure 1 As shown, in some embodiments of this application, the carbon paper hot-press curing production line further includes:
[0126] Thickness gauge A is set at the exit end of the pressure roller gap a and the exit end of the calendering space b.
[0127] As set up above, the thickness gauge A, located at the exit end of the pressure roller gap a, is used to monitor the thickness of the carbon paper 01 in real time. It forms a thickness feedback gap control system with the upper pressure roller 111 and the lower pressure roller 112 in front of it. When the thickness gauge A detects that the thickness of the calendered carbon paper 01 is greater than the set value, it can control the upper pressure roller 111 and the lower pressure roller 112 in front of it to move closer to each other, so that the pressure roller gap a between the upper pressure roller 111 and the lower pressure roller 112 is reduced, further thinning the carbon paper 01 and further reducing the thickness deviation of the calendered carbon paper 01. When the thickness gauge A detects that the thickness of the calendered carbon paper 01 is less than the set value, it can control the upper pressure roller 111 and the lower pressure roller 112 in front of it to move away from each other, so that the pressure roller gap a between the upper pressure roller 111 and the lower pressure roller 112 is increased, weakening the calendering of the carbon paper 01, and correspondingly reducing the thickness deviation of the calendered carbon paper 01, thereby improving the thickness control accuracy of the carbon paper 01. Among them, the sampling period of thickness gauge A should be slightly longer than the time it takes for carbon paper 01 to travel from the exit end of the pressure roller gap a to the position of thickness gauge A.
[0128] A thickness gauge A, positioned at the exit end of the calendering space b, monitors the thickness of the carbon paper 01 in real time. Together with the lower horizontal section 211 and upper horizontal section 221 in front of it, it forms a thickness feedback gap control system. Specifically, when the thickness gauge A detects that the thickness of the calendered carbon paper 01 is greater than a set value, it can control the thickness of the calendering space b to decrease, further thinning the carbon paper 01 and reducing the thickness deviation. Conversely, when the thickness gauge A detects that the thickness of the calendered carbon paper 01 is less than a set value, it can control the thickness of the calendering space b to increase, reducing the calendering of the carbon paper 01 and correspondingly reducing the thickness deviation, thus improving the thickness control accuracy of the carbon paper 01. The sampling period of the thickness gauge A should be slightly longer than the time it takes for the carbon paper 01 to travel from the exit end of the calendering space b to the position of the thickness gauge A.
[0129] As can be seen from the above, the calendering of carbon paper 01 is a process of continuous detection, correction and dynamic adjustment. The calendering thickness of carbon paper 01 is infinitely close to the set value, and the precision is higher than that of traditional calendering.
[0130] Please continue to refer to this. Figure 1 In some embodiments of this application, the carbon paper hot-press curing production line further includes:
[0131] Unwinding shaft 3 and winding shaft 4, the two ends of carbon paper 01 are wound around unwinding shaft 3 and winding shaft 4;
[0132] Three tension detection devices 5 are used to detect the tension of carbon paper 01. One tension detection device 5 is located at one end near the unwinding shaft 3, one tension detection device 5 is located between the rolling unit 1 and the flattening unit 2, and one tension detection device 5 is located at one end near the take-up shaft 4.
[0133] As configured above, the unwinding shaft 3 and its adjacent tension detection device 5, the flattening unit 2 and its front-end tension detection device 5, and the take-up shaft 4 and its front-end tension detection device 5 respectively form a tension feedback speed control system. Specifically, when the tension detection device 5 detects that the tension of the carbon paper 01 deviates from the set range, the controller can adjust the speed of its interlocked drive components to bring the tension of the carbon paper 01 back to the set range. The purpose of the tension detection device 5 is to prevent the carbon paper 01 from running off-center due to excessive slack or breaking due to excessive tension during operation.
[0134] Please continue to refer to this. Figure 1 In some embodiments of this application, the carbon paper hot-press curing production line further includes:
[0135] Two alignment mechanisms 6 are provided. One alignment mechanism 6 is located between the roller pressing unit 1 and the flat pressing unit 2, and the other alignment mechanism 6 is located at the rear end of the flat pressing unit 2.
[0136] As configured above, the alignment mechanism 6, located between the roller pressing unit 1 and the flat pressing unit 2, corrects any deviation that may occur in the carbon paper 01 after passing through the roller pressing unit 1, ensuring that the carbon paper 01 enters the flat pressing unit 2 in the correct position, preparing it for the subsequent hot-pressing and curing process. The alignment mechanism 6, located at the rear end of the flat pressing unit 2, also corrects any deviation that may occur in the carbon paper 01 after passing through the flat pressing unit 2, ensuring that the carbon paper 01 remains in the correct position after leaving the flat pressing unit 2, facilitating subsequent winding operations. The alignment mechanism 6 is electrically connected to the controller, enabling automated control and real-time adjustments based on the deviation of the carbon paper 01, improving the automation level and production efficiency of the production process.
[0137] The specific structure and working principle of the alignment mechanism 6 are existing technologies well known to those skilled in the art, and will not be described in detail here.
[0138] Furthermore, in some embodiments of this application, the carbon paper hot-press curing production line also includes:
[0139] The controller and other electronic devices are electrically connected.
[0140] With the above settings, the controller can automatically coordinate the work of various components, including temperature control, pressure control, and running speed control. Through preset programs, it can automate the entire hot-press curing process, reduce manual intervention, improve production efficiency, and enhance the hot-press curing effect of carbon paper 01.
[0141] The controller can be a PLC (Programmable Logic Controller), which can significantly improve the automation level, control accuracy, reliability and flexibility of the carbon paper hot pressing curing production line, while reducing maintenance costs and improving production efficiency and product quality.
[0142] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A carbon paper hot-pressing curing production line, characterized in that, include: A roller pressing unit (1) includes a plurality of roller pressing mechanisms (11) arranged sequentially in the front-back direction. Each roller pressing mechanism (11) includes an upper pressure roller (111) and a lower pressure roller (112). There is a roller gap (a) between the upper pressure roller (111) and the lower pressure roller (112) for carbon paper (01) to pass through. The distance between the upper pressure roller (111) and the lower pressure roller (112) is adjustable. Flat pressing unit (2), the flat pressing unit (2) is located at the rear end of the rolling pressing unit (1), the flat pressing unit (2) includes an upper pressing belt (21) and a lower pressing belt (22), and there is a calendering space (b) between the lower horizontal section (211) of the upper pressing belt (21) and the upper horizontal section (221) of the lower pressing belt (22) for the carbon paper (01) to pass through. Wherein, the front-back direction is the direction of movement of the carbon paper (01).
2. The carbon paper hot-pressing curing production line according to claim 1, characterized in that, The roller pressing mechanism (11) further includes: Heating elements for heating the upper pressure roller (111) and / or the lower pressure roller (112). A front support roller (114) is located at the front end of the upper pressure roller (111) and the lower pressure roller (112). With the gap (a) between the pressure rollers as the boundary, the front support roller (114) is located on the side closer to the upper pressure roller (111). In the working state, the upper pressure roller (111) is in contact with the upper wall of the carbon paper (01), and the front support roller (114) is in contact with the lower wall of the carbon paper (01). Alternatively, the front roller (114) is located on the side close to the lower roller (112). In the working state, the lower roller (112) is in contact with the lower wall of the carbon paper (01), and the front roller (114) is in contact with the upper wall of the carbon paper (01).
3. The carbon paper hot-pressing curing production line according to claim 1, characterized in that, The roller pressing mechanism (11) further includes: The rear support roller (115) is located at the rear end of the upper pressure roller (111) and the lower pressure roller (112). With the gap (a) between the pressure rollers as the boundary, the rear support roller (115) is located on the side closer to the upper pressure roller (111). In the working state, the upper pressure roller (111) is in contact with the upper wall of the carbon paper (01), and the rear support roller (115) is in contact with the lower wall of the carbon paper (01). An air-cooling unit (116) is disposed between the outlet end of the pressure roller gap (a) and the rear support roller (115).
4. The carbon paper hot-pressing curing production line according to any one of claims 1-3, characterized in that, The roller pressing unit (1) further includes: The suspension roller mechanism (12) is disposed between two adjacent roller pressing mechanisms (11). The suspension roller mechanism (12) includes a suspension roller (121) and a position sensor (122). The position of the suspension roller (121) is adjustable along the height direction. The position sensor (122) is used to detect the position of the suspension roller (121). In the working state, the suspension roller (121) is in contact with the upper wall of the carbon paper (01).
5. The carbon paper hot-pressing curing production line according to claim 4, characterized in that, The suspension roller mechanism (12) further includes: Multiple counterweights (123) of different weights, any one of which can be connected to the lower end of the suspension roller (121).
6. The carbon paper hot-press curing production line according to any one of claims 1-3, characterized in that, The pressure-equalizing unit (2) further includes two pressure-applying mechanisms, each comprising: Chain blanket mechanism (25), the chain blanket mechanism (25) includes a rotatable chain blanket (251), the upper surface of the chain blanket (251) at the upper end and the upper surface of the lower horizontal section (211) of the upper pressure belt (21) are in rolling contact, and the lower surface of the chain blanket (251) at the lower end and the lower surface of the upper horizontal section (221) of the lower pressure belt (22) are in rolling contact; The pressure plate mechanism (26) located at the upper end presses against the upper surface of the lower section (2511) of the chain blanket (251), and the pressure plate mechanism (26) located at the lower end presses against the lower surface of the upper section (2512) of the chain blanket (251). The position of the pressure plate mechanism (26) located at the upper end is adjustable along the height direction.
7. The carbon paper hot-pressing curing production line according to claim 6, characterized in that, The pressure plate mechanism (26) includes a plurality of first pressure plates (261) arranged sequentially in the front-back direction, and the temperature of the first pressure plates (261) increases and is kept warm sequentially from front to back.
8. The carbon paper hot-pressing curing production line according to claim 7, characterized in that, The pressure plate mechanism (26) further includes a plurality of second pressure plates (262) arranged sequentially in the front-back direction. The second pressure plates (262) are located at the rear end of the first pressure plate (261), and the temperature of the second pressure plates (262) decreases sequentially from front to back.
9. The carbon paper hot-pressing curing production line according to any one of claims 1-3, characterized in that, The carbon paper hot-press curing production line also includes: A thickness gauge (A) is installed at the exit end of the gap between the pressure rollers (a) and at the exit end of the calendering space (b).
10. The carbon paper hot-pressing curing production line according to any one of claims 1-3, characterized in that, The carbon paper hot-press curing production line also includes: Unwinding shaft (3) and winding shaft (4), the two ends of the carbon paper (01) are wound around the unwinding shaft (3) and the winding shaft (4). Three tension detection devices (5) are used to detect the tension of the carbon paper (01). One tension detection device (5) is located at one end near the unwinding shaft (3), one tension detection device (5) is located between the roller pressing unit (1) and the flat pressing unit (2), and one tension detection device (5) is located at one end near the winding shaft (4).