Carbon paper tape splicing method and carbon paper tape splicing device

Abstract

The invention relates to the technical field of fuel cell membrane electrode production, in particular to a carbon paper tape splicing method and a carbon paper tape splicing device.The carbon paper tape splicing method comprises the steps that a double-sided adhesive tape is arranged on one cloth face of a piece of carbon cloth to form connecting carbon cloth; bonding the joint of one carbon paper roll and the joint of the other carbon paper roll with the connecting carbon cloth through a double-sided adhesive tape; the connecting carbon cloth and the two connectors are connected in a sewing mode through carbon fiber ropes. The invention aims to provide a carbon paper tape splicing method and a carbon paper tape splicing device aiming at at least one technical problem related in the background technology.

Description

Technical Field

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

[0002] At present, the methods for non-stop splicing of roll-to-roll gas diffusion layer (GDL) carbon paper during carbonization and graphitization generally include tape splicing, hot melt adhesive splicing and ordinary sewing splicing. Ordinary roll products are mostly connected by tape, sewing or hot melt adhesive to enter the subsequent tooling. The sewing method refers to overlapping the carbon paper together and connecting it with carbon fiber rope by sewing. This has the following disadvantages: (1) Carbon paper is very brittle and easily breaks when the stitches pass through; (2) Carbon paper is very brittle. If mechanical sewing is used, the sewing machine will directly crush the carbon paper when pressing down; (3) If manual sewing is used, it takes a long time and must be stopped, and the above-mentioned defects cannot be solved; (4) The carbon fiber rope is easy to disperse and break during use; (5) When such sewing method passes through guide rollers with different wrap angles, 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 causes uneven force on the carbon paper at the splicing position and makes it easy to break. Summary of the invention

[0003] The purpose of the present application is to provide a carbon paper splicing method and a carbon paper splicing device in view of at least one technical problem involved in the background technology.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

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

[0006] Disposing a double-sided adhesive tape on one surface of a piece of carbon cloth to form a connected carbon cloth;

[0007] The joint of one carbon paper roll and the joint of another carbon paper roll are bonded to the connecting carbon cloth by double-sided adhesive tape;

[0008] The connecting carbon cloth and the two joints are sewn and connected by using a carbon fiber rope.

[0009] Optionally, before bonding the joint of one carbon paper roll and the joint of another carbon paper roll to the connecting carbon cloth by double-sided adhesive tape, the method further comprises:

[0010] Disposing a double-sided tape on one surface of another piece of carbon cloth to form another piece of connected carbon cloth;

[0011] Accordingly, the joint of one carbon paper roll and the joint of another carbon paper roll are bonded to the connecting carbon cloth by double-sided adhesive tape, including:

[0012] 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.

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

[0014] Optionally, the step of bonding the joint of one carbon paper roll and the joint of another carbon paper roll to the connecting carbon cloth by double-sided adhesive tape further comprises:

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

[0016] The beneficial effect of this technical solution is that it makes the connection between the joints of the two carbon paper rolls more firm and not easy to separate.

[0017] Optionally, the step of bonding the joint of one carbon paper roll and the joint of another carbon paper roll to the connecting carbon cloth by double-sided adhesive tape further comprises:

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

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

[0020] The two pieces of the connecting carbon cloth and the two joints are sewn together by using 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 connecting carbon cloths together, thereby 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 track includes the wavy track and the straight track, and the straight tracks are arranged on both sides of the wavy track in the length direction of the joint.

[0025] Another aspect of the present application provides a carbon paper splicing device, which is applied to the carbon paper splicing method provided in the present application, including a splicing platform, and a storage rack and a sewing machine both installed on the splicing platform, the storage rack and the sewing machine are both located above the splicing platform, and the storage rack is used to store connected carbon cloth.

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

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

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

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

[0031] The beneficial effect of this technical solution is that, 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 easily displaced, thereby obtaining a higher connection quality.

[0032] The technical solution provided by this 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. Pressure rod; 04. Carbon paper roll;

[0042] 05. Belt splicing platform; 06. Paper pressing mechanism;

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

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

[0045] 11. Sewing head. DETAILED DESCRIPTION

[0046] The technical solution of the present application will be described clearly and completely below 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 ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0047] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] like Figure 1 As shown, one aspect of the present application provides a carbon paper tape splicing method, comprising:

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

[0051] Step 200: bonding the joint of one carbon paper roll and the joint of another carbon paper roll to the connecting carbon cloth by double-sided adhesive tape;

[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, the step 200 further includes:

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

[0062] This makes the connection between the two carbon paper rolls stronger and less likely to separate.

[0063] In an embodiment of the present application, the overlap of the two joints may be a transverse overlap or a longitudinal overlap; the width of the overlapping area is preferably not greater than 500 mm, for example, it may be 100 mm, 200 mm, 300 mm or 400 mm, etc. Correspondingly, in order for the connected carbon cloth to cover the overlapping area, the area of ​​the connected carbon cloth should not be less than the area of ​​the overlapping area, and the width of the connected carbon cloth is preferably 100-500 mm, for example, it may be 200 mm, 300 mm, 400 mm or 500 mm, etc.

[0064] Optionally, the step 200 further includes:

[0065] The end surface of the joint of one carbon paper roll is brought into contact with the end surface of the joint of another carbon paper roll.

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

[0067] Optionally, the step 300 includes:

[0068] The two pieces of the connecting carbon cloth and the two joints are sewn together by using a carbon fiber rope to form a sewing track.

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

[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 straight track, and the straight tracks are arranged on both sides of the wavy track in the length direction of the joint.

[0073] like Figures 3a to 6bAs shown, when the overlapping area formed between the two joints is large, the sewing track is completely located in the overlapping area, and 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, the connection position of two carbon paper rolls connected by the carbon paper splicing method provided in the embodiment of the present application can withstand a tensile force of 10-30 kg before entering the high-temperature furnace and a tensile force of 5-10 kg after exiting the high-temperature furnace according to a width of 1000 mm.

[0075] like Figure 2 As shown, another aspect of the present application provides a carbon paper splicing device, which is applied to the carbon paper splicing method provided in the embodiment of the present application, including a splicing platform 05, and a storage rack 02 and a sewing machine 12 both installed on the splicing platform 05, the storage rack 02 and the sewing machine 12 are both located above the splicing platform 05, and the storage rack 02 is used to store the connected carbon cloth 08.

[0076] When in use, the rolled connected carbon cloth 08 (connected carbon cloth roll 01) is set on the storage rack 02 and can be taken out as needed. The corresponding length can be cut as needed. The joint of one roll of carbon paper roll 04 and the joint of another roll of carbon paper roll 09 are laid flat on the splicing platform 05, and are bonded together by the connected carbon cloth 08. Then, the sewing machine 12 is used to sew in the bonding area to form a sewing track.

[0077] Optionally, the tape connection platform 05 includes a main body platform and a drawer-type lower carbon cloth laying platform 07, wherein the drawer-type lower carbon cloth laying platform 07 includes a handle and a table top connected to each other, wherein the table top is placed flat on the main body platform, and the handle is located outside the main body platform. When two pieces of connecting carbon cloth 08 are provided, one of the connecting carbon cloth 08 is placed on the table top, and the cloth surface provided with double-sided tape faces upward, the bottom surfaces of the two joints are bonded to the connecting carbon cloth 08 on the table top, and then the other piece of connecting carbon cloth 08 is bonded to the two joints from above, and the entire drawer-type lower carbon cloth laying platform 07 can be pulled out from under the carbon paper by the handle, or the drawer-type lower carbon cloth laying platform 07 can be placed under the carbon paper.

[0078] Optionally, the sewing machine 12 includes three sewing heads 11 that move synchronously in the width direction of the tape splicing platform 05. In this way, three parallel straight-line sewing tracks can be sewn in one sewing operation, and the sewing efficiency is high. It can be understood that the length direction of the joint of the carbon paper roll is the length direction of the tape splicing platform 05.

[0079] Optionally, the carbon paper splicing device provided in the embodiment of the present application further includes two paper pressing mechanisms 06 installed on the splicing platform 05, and the two paper pressing mechanisms 06 are located on both sides of the sewing machine 10 in the length direction of the splicing platform 05, and the paper pressing mechanisms 06 are used to press the carbon paper onto the splicing platform 05. Preferably, the paper pressing mechanism 06 includes a pressure rod 03 arranged above the splicing platform 05, and the pressure rod 03 is driven by an air cylinder or an oil cylinder to move in the vertical direction. In this way, when the connecting carbon cloth 08 is bonded to the two joints, and during the sewing process of the sewing machine 10, the carbon paper is not easily displaced, and a higher connection quality is 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 it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A carbon paper tape splicing method, characterized in that: include: Disposing a double-sided adhesive tape on one surface of a piece of carbon cloth to form a connected carbon cloth; The joint of one carbon paper roll and the joint of another carbon paper roll are bonded to the connecting carbon cloth by double-sided adhesive tape; The connecting carbon cloth and the two joints are sewn and connected by using a carbon fiber rope.

2. The carbon paper tape splicing method according to claim 1, characterized in that: Before bonding the joint of one carbon paper roll and the joint of another carbon paper roll to the connecting carbon cloth by double-sided adhesive tape, the method includes: Disposing a double-sided tape on one surface of another piece of carbon cloth to form another piece of connected carbon cloth; Accordingly, the joint of one carbon paper roll and the joint of another carbon paper roll are bonded to the connecting carbon cloth by double-sided adhesive tape, including: 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.

3. The carbon paper tape splicing method according to claim 2, characterized in that: The method of bonding the joint of one carbon paper roll and the joint of another carbon paper roll to the connecting carbon cloth by double-sided adhesive tape also includes: The two joints are overlapped to form an overlapping area, and the two pieces of the connecting carbon cloth both cover the overlapping area.

4. The carbon paper tape splicing method according to claim 2, characterized in that: The method of bonding the joint of one carbon paper roll and the joint of another carbon paper roll to the connecting carbon cloth by double-sided adhesive tape also includes: The end surface of the joint of one carbon paper roll is brought into contact with the end surface of the joint of another carbon paper roll.

5. The carbon paper tape splicing method according to any one of claims 2 to 4, characterized in that: The method of sewing the connecting carbon cloth and the two joints with a carbon fiber rope comprises: The two pieces of the connecting carbon cloth and the two joints are sewn together by using a carbon fiber rope to form a sewing track.

6. The carbon paper tape splicing method according to claim 5, characterized in that: 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 straight track, and the straight tracks are arranged on both sides of the wavy track in the length direction of the joint.

7. Carbon paper splicing device, characterized in that: The carbon paper splicing method applied to any one of claims 1 to 6 comprises a splicing platform, and a storage rack and a sewing machine both installed on the splicing platform, wherein the storage rack and the sewing machine are both located above the splicing platform, and the storage rack is used to store the connected carbon cloth.

8. The carbon paper splicing device according to claim 7, characterized in that: The tape connection platform includes a main body platform and a drawer-type lower carbon cloth laying platform. The drawer-type lower carbon cloth laying platform includes a handle and a table top connected to each other. The table top is placed flat on the main body platform, and the handle is located outside the main body platform.

9. The carbon paper splicing device according to claim 7, characterized in that: The sewing machine comprises three sewing heads which move synchronously in the width direction of the tape splicing platform.

10. The carbon paper splicing device according to claim 7, characterized in that: It also includes two paper pressing mechanisms installed on the tape connection platform. The two paper pressing mechanisms are located on both sides of the sewing machine in the length direction of the tape connection platform. The paper pressing mechanisms are used to press carbon paper onto the tape connection platform.

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