Carbon paper splicing method and carbon paper splicing device

Abstract

This application relates to the technical field of fuel cell membrane electrode production. Specifically, it relates to a carbon paper splicing method and a carbon paper splicing device, including: setting a double-sided tape on one cloth surface of a piece of carbon cloth to form a connecting carbon cloth; bonding the joints of a roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through the double-sided tape; sewing and connecting the connecting carbon cloth and the two joints with a carbon fiber rope. The purpose of this application is to provide a carbon paper splicing method and a carbon paper splicing device for at least one technical problem involved in the background technology.

Description

Technical Field

[0001] The present application relates to the technical field of fuel cell membrane electrode production, and more specifically, to a carbon paper splicing method and a carbon paper splicing device. Background Art

[0002] Currently, the methods for splicing carbon paper without stopping the machine during the carbonization and graphitization treatment of roll-to-roll gas diffusion layer (GDL) carbon paper generally include tape sticking splicing, hot melt adhesive splicing, and ordinary sewing splicing, etc. When producing ordinary rolled products, tape, sewing, or hot melt adhesive is mostly used to connect two rolls of materials and then enter the subsequent tooling. The sewing method means that the carbon paper is overlapped and connected by using a carbon fiber rope in a sewing manner. This method has the following disadvantages: (1) The carbon paper is very brittle and is easily broken when the needle passes through; (2) The carbon paper is very brittle, and if mechanical sewing is used, the carbon paper will be directly crushed when the sewing machine presses down; (3) If manual sewing is used, it takes a long time and the machine must be in a stopped state, and the above-mentioned defects still cannot be solved; (4) The carbon fiber rope is easily dispersed and broken during use; (5) When passing through guide rollers with different wrap angles in such a sewing method, the carbon paper is easily cut and broken, etc. The biggest disadvantage of the hot melt adhesive splicing method is that the glue becomes very hard after curing, which results in uneven stress on the carbon paper at the splicing position and is easily broken. Summary of the Invention

[0003] An object of the present application is to provide a carbon paper splicing method and a carbon paper splicing device for at least one technical problem involved in the background art.

[0004] To achieve the above object, the present application adopts the following technical solutions:

[0005] One aspect of the present application provides a carbon paper splicing method, including:

[0006] Providing double-sided tape on one cloth surface of a piece of carbon cloth to form a connecting carbon cloth;

[0007] Bonding the joints of one roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through double-sided tape;

[0008] Sewing and connecting the connecting carbon cloth and the two joints with a carbon fiber rope.

[0009] Optionally, before bonding the joints of one roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through double-sided tape, it includes:

[0010] Providing double-sided tape on one cloth surface of another piece of carbon cloth to form another connecting carbon cloth;

[0011] Correspondingly, the step of bonding the joints of one roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through double-sided tape includes:

[0012] Place the joints of one roll of carbon paper roll and the joints of another roll of carbon paper roll between two pieces of connecting carbon cloth. Bond the two joints to one piece of connecting carbon cloth through corresponding double-sided tape, and bond the two joints to the other piece of connecting carbon cloth through corresponding double-sided tape.

[0013] The beneficial effect of this technical solution is that: the two pieces of connecting carbon cloth can firmly connect the joints of the two rolls of carbon paper rolls together.

[0014] Optionally, the step of bonding the joints of one roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through double-sided tape further includes:

[0015] Overlap the two joints to form an overlapping area, and cover the overlapping area with both pieces of connecting carbon cloth.

[0016] The beneficial effect of this technical solution is that: this makes the connection between the joints of the two carbon paper rolls firmer and not easily separated.

[0017] Optionally, the step of bonding the joints of one roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through double-sided tape further includes:

[0018] Make the end face of the joint of one roll of carbon paper roll abut against the end face of the joint of another roll of carbon paper roll. The beneficial effect of this technical solution is that: that is to say, although the joints of the two carbon paper rolls are in contact but not overlapped, this can reduce the thickness of the two rolls of carbon paper rolls at the joint position.

[0019] Optionally, the step of sewing and connecting the connecting carbon cloth and the two joints with a carbon fiber rope includes:

[0020] Sew and connect the two pieces of connecting carbon cloth and the two joints with a carbon fiber rope to form a sewing track.

[0021] The beneficial effect of this technical solution is that: in this way, the sewing track connects the two joints and the two pieces of connecting carbon cloth together, increasing the connection strength.

[0022] Optionally, the sewing track is a wavy track extending in the width direction of the joint; or,

[0023] The sewing track includes a plurality of linear tracks extending in the width direction of the joint and arranged in the length direction of the joint; or,

[0024] The sewing trajectory includes the wavy trajectory and the linear trajectory, and the linear trajectories are arranged on both sides of the wavy trajectory in the length direction of the joint.

[0025] Another aspect of the present application provides a carbon paper jointing device, which is applied to the carbon paper jointing method provided by the present application, and includes a jointing platform, a storage rack and a sewing machine both installed on the jointing platform. The storage rack and the sewing machine are both located above the jointing platform, and the storage rack is used for storing connecting carbon cloth.

[0026] Optionally, the jointing platform includes a main platform and a drawer-type lower carbon cloth laying platform. The drawer-type lower carbon cloth laying platform includes a handle and a table board connected to each other. The table board is placed flat on the main platform, and the handle is located outside the main platform.

[0027] The beneficial effect of this technical solution is that when there are two pieces of connecting carbon cloth, one piece of connecting carbon cloth is placed on the table board with the cloth surface provided with double-sided tape facing up. The bottom surfaces of the two joints are bonded to the connecting carbon cloth on the table board, and then another piece of connecting carbon cloth is bonded to the two joints from above. The entire drawer-type lower carbon cloth laying platform can be pulled out from under the carbon paper through the handle, or the drawer-type lower carbon cloth laying platform can be placed under the carbon paper.

[0028] Optionally, the sewing machine includes three sewing heads that move synchronously in the width direction of the jointing platform.

[0029] The beneficial effect of this technical solution is that in this way, three parallel linear sewing trajectories can be sewn in one sewing, and the sewing efficiency is relatively high.

[0030] Optionally, the carbon paper jointing device provided by the present application further includes two paper pressing mechanisms installed on the jointing platform. The two paper pressing mechanisms are located on both sides of the sewing machine in the length direction of the jointing platform, and the paper pressing mechanisms are used to press the carbon paper onto the jointing platform.

[0031] The beneficial effect of this technical solution is that in this way, when the connecting carbon cloth is bonded to the two joints and during the sewing process of the sewing machine, the carbon paper is not likely to be displaced, and a relatively high connection quality can be obtained.

[0032] The technical solution provided by the present application can achieve at least one of the following beneficial effects:

[0033] The carbon paper splicing method and carbon paper splicing device provided by the present application address the problem that carbon paper is easily broken by pressure during sewing. Double-sided tape is used to firmly fix the carbon paper and carbon cloth together, so that the force applied during sewing is uniform, and the carbon cloth itself is a soft material, which plays a buffering role. In this way, under the effect of double insurance, the carbon paper will not be crushed. In order to address the problem that the needle hole is easily enlarged due to the impact force during sewing, because the double-sided tape used has strong viscosity, when the impact force of the needle acts on the carbon paper during the sewing process, the area around the needle will be firmly bonded together and is not prone to breakage. In order to address the problem that the machine needs to be shut down during splicing, the carbon paper splicing method provided by the present application has a short time for manual material arrangement and a low mechanical Sewing also takes a shorter time, and the carbon cloth with double-sided tape can be stored and arranged in advance, so there is no need to stop the machine for splicing, which can greatly improve the performance consistency of the carbon paper material; in order to solve the problem that the carbon paper is easily cut by the carbon fiber rope at the sewing stitches when passing through the guide roller before entering the oven, because the double-sided tape used has strong viscosity, the area around the needle head will be firmly bonded together, and when subjected to force, the double-sided tape is the first to be subjected to force, because of its high strength, this level of force is completely difficult to break; in order to solve the problem of breakage caused by inconsistent thickness and high local strength when hot-melt adhesive is spliced, the carbon paper splicing method provided in the present application uses flexible materials, so the problem of increased local strength can be avoided, thereby avoiding the risk of carbon paper being broken.

[0034] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A flow chart of an implementation of a carbon paper splicing method provided in an embodiment of the present application;

[0037] Figure 2 A structural schematic diagram of an implementation of a carbon paper splicing device provided in an embodiment of the present application;

[0038] Figures 3a to 6b Schematic diagram of the structure of the connection position between the joints of two carbon paper rolls.

[0039] Reference numerals:

[0040] 01. Connect the carbon cloth roll; 02. Storage rack;

[0041] 03. Press rod; 04. Carbon paper roll;

[0042] 05. Tape connecting platform; 06. Paper pressing mechanism;

[0043] 07. Drawer - type lower - layer carbon cloth laying platform; 08. Connecting carbon cloth;

[0044] 09. Carbon paper roll; 10. Sewing machine;

[0045] 11. Sewing head. Specific implementation mode

[0046] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0047] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0049] As Figure 1 shown, one aspect of the present application provides a carbon paper connecting - tape method, including:

[0050] Step 100: Set a double - sided tape on one cloth surface of a piece of carbon cloth to form a connecting carbon cloth;

[0051] Step 200: Bond the joints of a roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through double - sided tapes;

[0052] Step 300: Sewing the connecting carbon cloth and the two joints together using a carbon fiber rope.

[0053] It can be understood that before the double-sided tape is bonded to the joint of the carbon paper roll, the double-sided tape is covered with release paper to avoid unnecessary adhesion of the double-sided tape to the outside world. When bonding to the joint of the carbon paper roll is required, the release paper is peeled off first.

[0054] The carbon paper splicing method provided by the present application aims to solve the problem that carbon paper is easily broken by pressure during sewing. Double-sided tape is used to firmly fix the carbon paper and carbon cloth together, so that the force during sewing is uniform. In addition, the carbon cloth itself is a soft material, which plays a buffering role. In this way, the carbon paper will not be crushed under the effect of double insurance. The problem that the needle hole is easily enlarged due to the impact force during sewing is solved because the double-sided tape used has strong viscosity. When the impact force of the needle acts on the carbon paper during sewing, the area around the needle will be firmly bonded together and will not easily break. The problem that the machine needs to be stopped during splicing is solved by the carbon paper splicing method provided by the present application. The time required for manual material arrangement is short (about 3 minutes), and the time required for mechanical sewing is also short (about 30-300 seconds). The carbon cloth with double-sided tape can be stored and arranged in advance (for example, a storage rack can be set up, and 8m long carbon cloth with double-sided tape can be set on the storage rack), so there is no need to stop the machine for splicing, which can greatly improve the performance consistency of the carbon paper material; in order to solve the problem that the carbon paper is easily cut by the carbon fiber rope at the sewing stitches when passing through the guide roller before entering the oven, because the double-sided tape used has strong viscosity, the needle head will be firmly bonded together, and when subjected to force, the double-sided tape is the first to be stressed, because of its high strength, this level of force is completely difficult to break; in order to solve the problem of breakage caused by inconsistent thickness and high local strength when hot-melt adhesive is spliced, the carbon paper splicing method provided in the present application uses flexible materials, so the problem of increased local strength can be avoided, thereby avoiding the risk of carbon paper being broken.

[0055] Optionally, before step 200, the following steps are included:

[0056] Step 400: placing a double-sided tape on one surface of another piece of carbon cloth to form another piece of connected carbon cloth;

[0057] Accordingly, the step 200 includes:

[0058] The joint of one carbon paper roll and the joint of another carbon paper roll are arranged between two connected carbon cloths, the two joints are bonded to one connected carbon cloth through corresponding double-sided tapes, and the two joints are bonded to another connected carbon cloth through corresponding double-sided tapes.

[0059] The joints of the two carbon paper rolls can be more firmly connected together through two pieces of connecting carbon cloth.

[0060] Optionally, step 200 further includes:

[0061] Overlap the two joints to form an overlapping area, and make both pieces of the connecting carbon cloth cover the overlapping area.

[0062] This makes the connection between the joints of the two carbon paper rolls firmer and not easily separated.

[0063] In the embodiment of the present application, the overlapping of the two joints can be horizontal overlapping or vertical overlapping; the width of the overlapping area is preferably not greater than 500 mm. For example, it can be 100 mm, 200 mm, 300 mm or 400 mm, etc. Correspondingly, in order for the connecting carbon cloth to cover the overlapping area, the area of the connecting carbon cloth should not be less than the area of the overlapping area. The width of the connecting carbon cloth is preferably 100 - 500 mm. For example, it can be 200 mm, 300 mm, 400 mm or 500 mm, etc.

[0064] Optionally, step 200 further includes:

[0065] Make the end face of the joint of one carbon paper roll abut against the end face of the joint of the other carbon paper roll.

[0066] That is to say, although the joints of the two carbon paper rolls are in contact but not overlapped, this can reduce the thickness of the two carbon paper rolls at the joint position.

[0067] Optionally, step 300 includes:

[0068] Sew and connect the two pieces of connecting carbon cloth and the two joints with a carbon fiber rope to form a sewing track.

[0069] In this way, the sewing track connects the two joints and the two pieces of connecting carbon cloth together, increasing the connection strength. Of course, the two joints can also be connected to the connecting carbon cloth respectively.

[0070] Optionally, the sewing track is a wavy track extending in the width direction of the joint; or,

[0071] The sewing track includes a plurality of linear tracks extending in the width direction of the joint and arranged in the length direction of the joint; or,

[0072] The sewing track includes the wavy track and the linear tracks, and the linear tracks are arranged on both sides of the wavy track in the length direction of the joint.

[0073] Such as Figures 3a to 6bAs shown, when the overlapping area formed between the two joints is large, the sewing track is completely located within the overlapping area. When the overlapping area is relatively small, the outer part of the sewing track is located outside the overlapping area.

[0074] In an application example, for the connection position of two carbon paper rolls connected by the carbon paper jointing method provided by the embodiment of the present application, according to a width of 1000 mm, it can withstand a tensile force of 10 - 30 kg before entering the high-temperature furnace and 5 - 10 kg after exiting the high-temperature furnace.

[0075] As Figure 2 shown, another aspect of the present application provides a carbon paper jointing device applied to the carbon paper jointing method provided by the embodiment of the present application, including a jointing platform 05, and a storage rack 02 and a sewing machine 10 both installed on the jointing platform 05. The storage rack 02 and the sewing machine 10 are both located above the jointing platform 05, and the storage rack 02 is used to store connecting carbon cloth 08.

[0076] During use, a roll of connecting carbon cloth 08 (connecting carbon cloth roll 01) is arranged on the storage rack 02 and can be taken as needed. The corresponding length can be cut according to requirements. On the jointing platform 05, the joints of a roll of carbon paper roll 04 and another roll of carbon paper roll 09 are laid flat and bonded together through the connecting carbon cloth 08, and then sewn in the bonding area by the sewing machine 10 to form a sewing track.

[0077] Optionally, the jointing platform 05 includes a main platform and a drawer-type lower carbon cloth laying platform 07. The drawer-type lower carbon cloth laying platform 07 includes a handle and a table board connected to each other. The table board is placed flat on the main platform, and the handle is located outside the main platform. When there are two pieces of connecting carbon cloth 08, one piece of connecting carbon cloth 08 is arranged on the table board with the cloth surface provided with double-sided tape facing upward, and the bottom surfaces of the two joints are bonded to the connecting carbon cloth 08 on the table board. Then, the other piece of connecting carbon cloth 08 is bonded to the two joints from above. The entire drawer-type lower carbon cloth laying platform 07 can be pulled out from below the carbon paper through the handle, or the drawer-type lower carbon cloth laying platform 07 can be placed below the carbon paper.

[0078] Optionally, the sewing machine 10 includes three sewing heads 11 that move synchronously in the width direction of the jointing platform 05. In this way, three parallel linear sewing tracks can be sewn in one sewing, and the sewing efficiency is relatively high. It can be understood that the length direction of the joint of the carbon paper roll is the length direction of the jointing platform 05.

[0079] Optionally, the carbon paper splicing device provided by the embodiments of the present application further includes two paper pressing mechanisms 06 installed on the splicing platform 05. In the length direction of the splicing platform 05, the two paper pressing mechanisms 06 are located on both sides of the sewing machine 10. The paper pressing mechanism 06 is used to press the carbon paper onto the splicing platform 05. Preferably, the paper pressing mechanism 06 includes a pressing rod 03 disposed above the splicing platform 05, and the pressing rod 03 is driven by a cylinder or an oil cylinder to move in the vertical direction. In this way, when bonding the carbon cloth 08 to the two joints and during the sewing process of the sewing machine 10, the carbon paper is not likely to be displaced, and a higher bonding quality can be obtained.

[0080] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for connecting carbon paper tapes, characterized in that Including: A double-sided tape is disposed on one cloth surface of a piece of carbon cloth to form a connecting carbon cloth; The joints of a roll of carbon paper roll and the joints of another roll of carbon paper roll are both bonded to the connecting carbon cloth through double-sided tapes; The connecting carbon cloth and the two joints are sewn and connected with a carbon fiber rope; Wherein, the bonding of the joints of a roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through double-sided tapes further includes: The end face of the joint of a roll of carbon paper roll is abutted against the end face of the joint of another roll of carbon paper roll, so that although the two joints of the carbon paper rolls are in contact, they do not overlap.

2. The carbon paper joint tape method according to claim 1, characterized in that, Before the bonding of the joints of a roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through double-sided tapes, it includes: A double-sided tape is disposed on one cloth surface of another piece of carbon cloth to form another connecting carbon cloth; Correspondingly, the bonding of the joints of a roll of carbon paper roll and the joints of another roll of carbon paper roll to the connecting carbon cloth through double-sided tapes includes: The joints of a roll of carbon paper roll and the joints of another roll of carbon paper roll are disposed between two connecting carbon cloths, the two joints are bonded to one connecting carbon cloth through corresponding double-sided tapes, and the two joints are bonded to the other connecting carbon cloth through corresponding double-sided tapes.

3. The carbon paper joint tape method according to claim 2, wherein, The sewing connection between the connecting carbon cloth and the two joints with a carbon fiber rope includes: The two connecting carbon cloths and the two joints are sewn and connected with a carbon fiber rope to form a sewing track.

4. The carbon paper jointing method according to claim 3, wherein, The sewing track is a wavy track extending in the width direction of the joint; or, The sewing track includes a plurality of linear tracks extending in the width direction of the joint and arranged in the length direction of the joint; or, The sewing track includes the wavy track and the linear tracks, and the linear tracks are disposed on both sides of the wavy track in the length direction of the joint.

5. Carbon paper connecting tape device, characterized in that, Applied to the carbon paper jointing method according to any one of claims 1 to 4, it includes a jointing platform, and a storage rack and a sewing machine both installed on the jointing platform. The storage rack and the sewing machine are both located above the jointing platform, and the storage rack is used for storing the connecting carbon cloth.

6. The carbon paper splicing device according to claim 5, wherein The jointing platform includes a main platform and a drawer-type lower carbon cloth laying platform. The drawer-type lower carbon cloth laying platform includes a handle and a table board connected to each other. The table board is placed flat on the main platform, and the handle is located outside the main platform.

7. The carbon paper splicing device according to claim 5, characterized in that, The sewing machine includes three sewing heads that move synchronously in the width direction of the jointing platform.

8. The carbon paper connecting device according to claim 5, characterized in that, It further includes two paper pressing mechanisms installed on the jointing platform. The two paper pressing mechanisms are located on both sides of the sewing machine in the length direction of the jointing platform, and the paper pressing mechanisms are used to press the carbon paper onto the jointing platform.

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