Plane coating device for carbon fiber paper

Abstract

The utility model discloses a plane coating device for carbon fiber paper, which comprises a feeding conveying mechanism, a coating mechanism, a coating mechanism and a coating mechanism, wherein the feeding conveying mechanism is used for feeding and conveying the carbon fiber paper; the gluing conveying mechanism is arranged at the discharging end of the feeding conveying mechanism and used for conveying the carbon fiber paper in the gluing process; the gluing mechanism is arranged above the gluing conveying mechanism, is used for completing quantitative gluing of the carbon fiber paper and comprises a gluing head, a first driving assembly for driving the gluing head to move in the conveying direction of the gluing conveying mechanism and a glue supply pipeline for connecting the gluing head with a glue storage tank, and a gluing metering pump is arranged on the glue supply pipeline; the glue extruding mechanism is arranged at the discharging end of the gluing mechanism and is used for extruding glue after the carbon fiber paper is glued; and the discharging and conveying mechanism is arranged at the discharging end of the glue extruding mechanism and used for discharging and conveying the carbon fiber paper. According to the plane coating device for the carbon fiber paper, the carbon fiber paper can be uniformly coated with glue, and the damage to the carbon fiber paper is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dip coating, in particular to a flat coating device for carbon fiber paper. Background Art

[0002] Carbon fiber paper is widely used in our daily life. After a series of processes, carbon fiber paper can be made into gas diffusion layer material, which is one of the key materials for hydrogen fuel cell membrane electrode. It has corrosion resistance, porous air permeability, good thermal conductivity and hydrophobicity. The main process of manufacturing battery membrane electrode material is to evenly coat the glue made of special resin and powder on carbon fiber paper and dry and solidify it.

[0003] Most of the existing carbon fiber paper coating structures use fixed glue spray heads to apply glue. The fiber bonding strength on the surface of the carbon fiber paper is relatively low. For some glues with lower viscosity, the larger flow rate corresponding to large-flow glue spraying will have the risk of impact damage to the material surface.

[0004] In order to solve the above problems, the present utility model is provided. Utility Model Content

[0005] The utility model aims to provide a flat coating device for carbon fiber paper, which is convenient for gluing the carbon fiber paper and reduces damage to the carbon fiber paper.

[0006] Based on the above problems, the technical solution provided by the utility model is:

[0007] A flat coating device for carbon fiber paper, comprising:

[0008] A feeding and conveying mechanism, used for feeding and conveying carbon fiber paper;

[0009] A gluing conveying mechanism, which is arranged at the discharge end of the feeding conveying mechanism and is used for conveying the carbon fiber paper during the gluing process;

[0010] A glue coating mechanism, which is arranged above the glue coating conveying mechanism and is used to complete the quantitative glue coating of the carbon fiber paper, comprises a glue coating head, a first driving component for driving the glue coating head to move along the conveying direction of the glue coating conveying mechanism, and a glue supply pipeline connecting the glue coating head and the glue storage tank, wherein the glue supply pipeline is provided with a glue coating metering pump;

[0011] A glue extrusion mechanism, which is arranged at the discharge end of the glue coating mechanism and is used for extruding glue after the carbon fiber paper is glued;

[0012] The discharging and conveying mechanism is arranged at the discharging end of the glue squeezing mechanism and is used for discharging and conveying the carbon fiber paper.

[0013] In some embodiments, the first driving assembly includes a first screw rod extending along the conveying direction of the glue conveying mechanism, a first slider transmission connected to the first screw rod, and a first motor driving the first screw rod to rotate, and the glue coating head is mounted on the first slider.

[0014] In some of the embodiments, the glue extrusion mechanism includes a lower glue extrusion roller arranged between the glue coating conveying mechanism and the material discharging conveying mechanism, an upper glue extrusion roller which is adjustable relative to the lower glue extrusion roller, and a second driving component which drives the upper glue extrusion roller to move up and down, the lower glue extrusion roller is supported by a support seat and is connected to the second motor in transmission, and the upper glue extrusion roller is connected to the third motor in transmission.

[0015] In some embodiments, the second driving assembly includes a second screw rod arranged in a vertical direction, a second slider drivingly connected to the second screw rod, and a fourth motor driving the second screw rod to rotate, and the upper rubber squeezing roller is mounted on the second slider.

[0016] In some of the embodiments, a glue receiving tray is further included, which is arranged below the glue coating conveying mechanism, the glue squeezing mechanism, and the material discharging conveying mechanism and is used to collect residual glue.

[0017] In some embodiments, the glue receiving tray is connected to the glue storage tank via a glue return pipeline.

[0018] In some of the embodiments, a rubber return pump is provided on the rubber return pipeline.

[0019] In some of the embodiments, a filter is provided on the pipe section of the rubber return pipeline connecting the rubber return pump and the rubber connection tray.

[0020] In some of the embodiments, the feed conveying mechanism includes two first conveying rollers arranged opposite to each other and a first conveying belt supported by the two first conveying rollers, the glue coating conveying mechanism includes two second conveying rollers arranged opposite to each other and a second conveying belt supported by the two second conveying rollers, the discharging conveying mechanism includes two third conveying rollers arranged opposite to each other and a third conveying belt supported by the two third conveying rollers, the third conveying roller located at the discharging end of the discharging conveying mechanism is connected to the fifth motor through transmission, and the adjacent first conveying rollers and the second conveying rollers, as well as the adjacent second conveying rollers and the third conveying rollers are connected through transmission belts.

[0021] In some of the embodiments, a feed sensor is provided at the feed end of the glue conveying mechanism, and the feed sensor, the glue metering pump, and the first motor are respectively connected to the control unit by signal.

[0022] Compared with the prior art, the advantages of the utility model are:

[0023] 1. The gluing mechanism adopts a mobile glue spray head, which can flexibly adjust the amount of glue on the entire piece of carbon fiber paper, avoid the impact damage of large flow glue on the carbon fiber paper surface, and improve the gluing quality;

[0024] 2. The glue extrusion mechanism can adjust the glue extrusion gap according to needs to ensure the glue extrusion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of an embodiment of a flat coating device for carbon fiber paper of the utility model;

[0027] in:

[0028] 1. Carbon fiber paper; 2. Feed sensor; 3. Glue coating head; 4. First slider; 5. First screw rod; 6. Glue supply pipeline; 7. Glue coating metering pump; 8. First motor; 9. Third motor; 10. Upper glue squeezing roller; 11. Second screw rod; 12. Fourth motor; 13. Second slider; 14. Feed conveying mechanism; 15. Glue receiving tray; 16. Glue coating conveying mechanism; 17. Glue return pipeline; 18. Filter; 19. Glue return pump; 20. Lower glue squeezing roller; 21. Support seat; 22. Second motor; 23. Discharge conveying mechanism; 24. Fifth motor. DETAILED DESCRIPTION

[0029] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the utility model and are not limited to the scope of the utility model. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0030] like Figure 1 FIG. 1 is a schematic diagram of the structure of an embodiment of the utility model, which provides a flat coating device for carbon fiber paper, including a feeding conveying mechanism 14, a glue coating conveying mechanism 16, a glue coating mechanism, a glue squeezing mechanism and a discharging conveying mechanism 23.

[0031] The feeding conveying mechanism 14 is arranged at the feeding end of the glue coating conveying mechanism 16, and is used for feeding and conveying the carbon fiber paper 1, and includes two first conveying rollers relatively arranged and a first conveying belt supported by the two first conveying rollers. Specifically, the carbon fiber paper is supported by a pad and placed on the first conveying belt, and the pad is driven to move by the first conveying belt, thereby conveying the carbon fiber paper 1.

[0032] The gluing conveying mechanism 16 is arranged at the discharge end of the feeding conveying mechanism 14 and is used for conveying the carbon fiber paper 1 during the gluing process. It includes two second conveying rollers arranged opposite to each other and a second conveying belt supported by the two second conveying rollers.

[0033] The gluing mechanism is arranged above the gluing conveying mechanism 16, and is used to complete the quantitative gluing of the carbon fiber paper 1, including a gluing head 3, a first driving component driving the gluing head 3 to move in the opposite direction of the conveying direction of the gluing conveying mechanism 16, and a glue supply pipeline 6 connecting the gluing head 3 and the glue storage tank. A gluing metering pump 7 is arranged on the glue supply pipeline 6. When the gluing conveying mechanism drives the carbon fiber paper to move in the direction of the glue squeezing mechanism, the gluing head 3 is driven by the first driving component to move in the opposite direction of the conveying direction of the gluing conveying mechanism 16 to complete the quantitative gluing of the carbon fiber paper 1. The outlet of the gluing head 3 is a long slit slightly wider than the width of the carbon fiber paper 1, and as the gluing head 3 moves, it can cover the entire surface of the carbon fiber paper 1.

[0034] The glue supply of the glue metering pump 7 is determined by the length and width of the carbon fiber paper 1 and the glue coating amount. The glue supply of the glue metering pump 7 is 1.3 to 1.5 times the glue coating amount to meet the subsequent extrusion metering process requirements. The stable and uniform glue spraying amount required by the glue coating head 3 is the glue supply rate of the glue coating metering pump 7. Therefore, the glue supply time T of the glue coating metering pump 7 is calculated according to the glue supply amount and the glue supply rate control system, so that the control system automatically controls the glue coating head 3 to complete the entire glue spraying stroke L at the corresponding speed V=L / T to complete uniform glue coating, wherein the glue spraying stroke L is slightly larger than the length of the carbon fiber paper 1, that is, Figure 1 The length from P1 to P2 in the image.

[0035] In this example, the first driving assembly includes a first screw rod 5 extending along the conveying direction of the glue conveying mechanism 16, a first slider 4 transmission-connected to the first screw rod 5, and a first motor 8 driving the first screw rod 5 to rotate. The first screw rod 5 is rotatably supported by two first screw rod seats, and the first motor 8 drives the first screw rod 5 to rotate, so as to drive the first slider 4 to move axially along the first screw rod 5, thereby driving the glue coating head 3 to move.

[0036] In order to further optimize the implementation effect of the utility model, a feed sensor 2 is provided at the feed end of the glue conveying mechanism 16. The feed sensor 2, the glue metering pump 7 and the first motor 8 are respectively connected to the control unit signal. The carbon fiber paper 1 will have a first signal at the head and a second signal at the tail when passing through the feed sensor 2. When the feed sensor 2 detects the tail of the carbon fiber paper 1 and transmits the signal to the control unit, the control unit starts the glue metering pump 7 to supply glue quantitatively, and at the same time, the glue head 3 moves at a certain speed after a certain delay.

[0037] The glue squeezing mechanism is arranged at the discharge end of the glue coating mechanism and is used for squeezing glue after the carbon fiber paper 1 is glued. It includes a lower glue squeezing roller 20 arranged between the glue coating conveying mechanism 16 and the discharge conveying mechanism 23, an upper glue squeezing roller 10 which is adjustable relative to the lower glue squeezing roller 20, and a second driving component that drives the upper glue squeezing roller 10 to move up and down, wherein the lower glue squeezing roller 20 is supported by a support seat 21 and is transmission-connected to the second motor 22, the upper glue squeezing roller 10 is transmission-connected to the third motor 9, and the rotation speeds of the lower glue squeezing roller 20 and the upper glue squeezing roller 10 are consistent with the speeds of the feeding conveying mechanism 14, the glue coating conveying mechanism 16, and the discharge conveying mechanism 23.

[0038] The second driving assembly includes a second screw rod 11 arranged in the vertical direction, a second slider 13 transmission-connected to the second screw rod 11, and a fourth motor 12 driving the second screw rod 11 to rotate, and the upper rubber squeezing roller 10 is installed on the second slider 13, wherein the second screw rod 11 is rotationally supported by two second screw rod seats, and the second screw rod 11 is driven to rotate by the fourth motor 12 to drive the second slider 13 to move up and down, thereby driving the upper rubber squeezing roller 10 to move up and down, and then adjusting the rubber squeezing gap between the upper rubber squeezing roller 20 and the lower rubber squeezing roller 20.

[0039] The discharging conveying mechanism 23 is arranged at the discharging end of the glue squeezing mechanism, and is used to complete the discharging conveying of the carbon fiber paper 1, and includes two third conveying rollers arranged opposite to each other and a third conveying belt supported by the two third conveying rollers. In this example, the feeding conveying mechanism 14, the glue coating conveying mechanism 16 and the discharging conveying mechanism 23 are connected to the fifth motor 24 in a transmission manner to maintain the same speed of transmission. Specifically, the third conveying roller at the output end of the discharging conveying mechanism 23 is connected to the fifth motor 24 in a transmission manner, and the adjacent first conveying rollers and the first conveying rollers, and the adjacent second conveying rollers and the third conveying rollers are connected in a transmission manner via a transmission belt.

[0040] In order to collect the residual glue at the glue coating mechanism and the glue squeezing mechanism, a glue receiving tray 15 is provided, which is arranged below the glue coating conveying mechanism 16, the glue squeezing mechanism, and the material discharging conveying mechanism 23. The glue receiving tray 15 is connected to the glue storage tank via a glue return pipeline 17, and the residual glue can be reused. Specifically, a glue return pump 19 is provided on the glue return pipeline 17, which is used to suck the residual glue in the glue receiving tray 15 into the glue storage tank.

[0041] In order to remove impurities in the residual glue and ensure the quality of the residual glue, a filter 18 is provided on the pipe section of the glue return pipeline 17 connecting the glue return pump 19 and the glue receiving tray 15 .

[0042] The working principle of the utility model is:

[0043] The carbon fiber paper 1 is input by the feeding conveying mechanism 14. When the feeding sensor 2 detects the signal at the tail of the carbon fiber paper 1, the control unit starts the glue metering pump 7 to start quantitatively conveying the glue solution. After a certain delay, the glue head 3 moves at a certain speed driven by the first driving component to complete the coating of the quantitative glue solution on the carbon fiber paper 1. Then, the coated carbon fiber paper 1 is conveyed to the glue squeezing mechanism position by the glue conveying mechanism 16. The upper glue squeezing roller 10 moves relative to the lower glue squeezing roller 20 driven by the second driving component to adjust the appropriate glue squeezing gap. After the glue squeezing is completed, the carbon fiber paper 1 is conveyed by the discharging conveying mechanism 23 to the next drying process for drying.

[0044] In summary, the coating device can evenly coat the carbon fiber paper and reduce the damage of large-flow glue to the surface of the carbon fiber paper. At the same time, the thickness of the glue can be adjusted by adjusting the coating time to meet production needs.

[0045] The above examples are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A flat coating device for carbon fiber paper, characterized in that: include: A feeding and conveying mechanism, used for feeding and conveying carbon fiber paper; A gluing conveying mechanism, which is arranged at the discharge end of the feeding conveying mechanism and is used for conveying the carbon fiber paper during the gluing process; A glue coating mechanism, which is arranged above the glue coating conveying mechanism and is used to complete the quantitative glue coating of the carbon fiber paper, comprises a glue coating head, a first driving component for driving the glue coating head to move in the opposite direction of the conveying direction of the glue coating conveying mechanism, and a glue supply pipeline connecting the glue coating head and the glue storage tank, wherein the glue supply pipeline is provided with a glue coating metering pump; A glue extrusion mechanism, which is arranged at the discharge end of the glue coating mechanism and is used for extruding glue after the carbon fiber paper is glued; The discharging and conveying mechanism is arranged at the discharging end of the glue squeezing mechanism and is used for discharging and conveying the carbon fiber paper.

2. The flat surface coating device for carbon fiber paper according to claim 1, characterized in that: The first driving assembly includes a first screw rod extending along the conveying direction of the glue conveying mechanism, a first slider drivingly connected to the first screw rod, and a first motor driving the first screw rod to rotate, and the glue coating head is mounted on the first slider.

3. The flat surface coating device for carbon fiber paper according to claim 1, characterized in that: The glue squeezing mechanism includes a lower glue squeezing roller arranged between the glue coating conveying mechanism and the material discharging conveying mechanism, an upper glue squeezing roller which is adjustably arranged relative to the lower glue squeezing roller, and a second driving component which drives the upper glue squeezing roller to move up and down, the lower glue squeezing roller is supported by a support seat and is transmission-connected to a second motor, and the upper glue squeezing roller is transmission-connected to a third motor.

4. The flat surface coating device for carbon fiber paper according to claim 3, characterized in that: The second driving assembly includes a second screw rod arranged in a vertical direction, a second slider drivingly connected to the second screw rod, and a fourth motor driving the second screw rod to rotate, and the upper rubber squeezing roller is installed on the second slider.

5. The flat surface coating device for carbon fiber paper according to claim 1, characterized in that: It also includes a glue receiving plate, which is arranged below the glue coating conveying mechanism, the glue squeezing mechanism and the material discharging conveying mechanism and is used for collecting residual glue.

6. The flat surface coating device for carbon fiber paper according to claim 5, characterized in that: The glue receiving tray is connected to the glue storage tank via a glue return pipeline.

7. The flat surface coating device for carbon fiber paper according to claim 6, characterized in that: The rubber return pipeline is provided with a rubber return pump.

8. The flat surface coating device for carbon fiber paper according to claim 7, characterized in that: A filter is provided on the pipe section connecting the glue return pump and the glue receiving tray on the glue return pipeline.

9. The flat surface coating device for carbon fiber paper according to claim 1, characterized in that: The feed conveying mechanism includes two first conveying rollers arranged opposite to each other and a first conveying belt supported by the two first conveying rollers, the glue coating conveying mechanism includes two second conveying rollers arranged opposite to each other and a second conveying belt supported by the two second conveying rollers, the discharging conveying mechanism includes two third conveying rollers arranged opposite to each other and a third conveying belt supported by the two third conveying rollers, the third conveying roller located at the discharging end of the discharging conveying mechanism is connected to the fifth motor through transmission, and the adjacent first conveying rollers and the second conveying rollers, as well as the adjacent second conveying rollers and the third conveying rollers are connected through transmission belts.

10. The flat surface coating device for carbon fiber paper according to claim 1, characterized in that: A feed sensor is provided at the feed end of the glue coating conveying mechanism, and the feed sensor, the glue coating metering pump and the first motor are respectively connected to the control unit by signal.

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