Fuel cell membrane electrode cutting and shaping device

Abstract

The utility model discloses a fuel cell membrane electrode cutting and shaping device which comprises a base, positioning columns are fixedly arranged at the positions, close to the four corner ends, of the base, and customized cutting tools acting on a membrane electrode are fixedly arranged on the base. A positioning column is arranged on the base, the upper end face of the positioning column is lower than the upper end face of the customized cutting tool, a plurality of positioning adhesion blocks acting on the membrane electrode are arranged on the base, the upper end faces of the positioning adhesion blocks are lower than the upper end face of the customized cutting tool, and the cutting and shaping device further comprises an upper pressing plate used for pressing the membrane electrode. According to the cutting and shaping device, accurate positioning of the membrane electrode to be cut in the device can be effectively improved, displacement in the cutting process is avoided, it is guaranteed that the cutting size of the membrane electrode meets the requirement, and the rate of finished products is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell positioning mould field especially relates to a fuel cell membrane electrode cutting shaping device. BACKGROUND

[0002] Membrane electrode is one of important components of fuel cell, constitutes " sandwich " after proton exchange membrane, catalytic layer, gas diffusion layer, then, after being placed in two sealing frames, realizes the packaging of above-mentioned multilayer structure through heat pressing etc., finally, above-mentioned packaging structure is placed in ordinary mould, and cutting equipment with custom cutter is used to cut the packaging structure into the membrane electrode with hydrogen, oxygen, water frame of required size, in order to guarantee the positioning of membrane electrode in mould in the cutting link, the most common way is to set up positioning through hole on initial sealing frame, and set up positioning column structure for the positioning through hole to penetrate in mould, thereby realizing the positioning of packaging structure in mould.

[0003] But after high-temperature hot pressing forming, the membrane electrode has the problem of deviation from the original design size due to the ductility of the material in the hot pressing process, which leads to the problem that the positioning through hole and the positioning column structure alone cannot guarantee the accurate positioning of the membrane electrode in the clamp, and the membrane electrode is prone to move during cutting, thereby greatly affecting the cutting size of the membrane electrode, and further reducing the yield of the formed membrane electrode. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of fuel cell membrane electrode cutting shaping devices, its advantages are that the accurate positioning of the membrane electrode to be cut in device can be effectively improved, avoid displacement during cutting, ensure that the cutting size of membrane electrode meets the requirements, improve yield.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a kind of fuel cell membrane electrode cutting shaping device, including base, the base is fixed with positioning column near four corner ends, and fixed with custom cutting tool acting on membrane electrode, the upper end surface of the positioning column is lower than the upper end surface of custom cutting tool, the base is equipped with multiple positioning adhesion blocks acting on membrane electrode, the upper end surface of the positioning adhesion block is lower than the upper end surface of the custom cutting tool, the cutting shaping device further includes upper pressing plate acting on membrane electrode pressure.

[0006] The utility model is further provided as follows: the positioning adhesion block sequentially includes hard bottom layer, foam glue layer one, rubber layer, foam glue layer two and high-temperature-resistant adhesive tape layer from bottom to top, the adhesive surface of the high-temperature-resistant adhesive tape layer faces upwards and can be in contact with membrane electrode and adhere.

[0007] The utility model further sets up: the upper end surface of positioning column is 0.5-1mm below the upper end surface of tailor cutting tool, the upper end surface of positioning adhesion block is 0.5-1mm below the upper end surface of tailor cutting tool.

[0008] The utility model further sets up: the hard bottom layer all is along the length direction array of tailor cutting tool and is parallel with the longest side of tailor cutting tool, the hard bottom layer all is up and down slidingly arranged in the base, be equipped with the limiting mechanism of acting to the hard bottom layer on the base.

[0009] The utility model further sets up: the limiting mechanism includes the limiting rod slidingly arranged on the base, the hard bottom layer all is equipped with the limiting through slot of limiting rod, the limiting rod can continuously or interval formula, simultaneously penetrate the hard bottom layer of multiple array along the length direction of tailor cutting tool, when limiting rod penetrates the hard bottom layer of positioning adhesion block, the top surface of this positioning adhesion block is 0.5-1mm below the upper surface of tailor cutting tool.

[0010] The utility model further sets up: not the hard bottom layer of limiting rod penetration limiting, the top surface of hard bottom layer is below the limiting rod.

[0011] The utility model further sets up: the base is filled with the soft support layer in the closed circle of tailor cutting tool.

[0012] The utility model further sets up: the top surface of soft support layer is 0.5-1mm below the top surface of tailor cutting tool.

[0013] Summarized above, the utility model has following beneficial effect:

[0014] 1, the device is equipped with positioning column, simultaneously its below tailor cutting tool, for the film electrode of being cut in the device on the position finding and preliminary positioning of being cut, and avoid the positioning hole on the film electrode of being cut and lead to the film electrode on the device is completely limited, the film electrode of being cut on the device can carry out trace movement, so that subsequent accurate positioning, the device sets up positioning adhesion block, is used for the accurate positioning of film electrode, and it also below tailor cutting tool, avoid the film electrode of being cut and be adhered limited when being placed on the device in the position uncertain condition, after the position of film electrode is determined, only needs to press film electrode slightly, can make it be adhered on positioning adhesion block, realize the adhered positioning of the film electrode of being cut on the device, namely realize the accurate positioning of the film electrode of being cut on the device at this time.

[0015] 2. The positioning and adhesion block consists of a rigid base layer, a first foam adhesive layer, a rubber layer, a second foam adhesive layer, and high-temperature resistant tape. The rigid base layer and the rubber layer form a support with moderate hardness for the membrane electrode. The foam adhesive layer allows the rubber layer to be installed on the rigid base layer as needed, and meets the requirements for thickness adjustment. It is low-cost, simple, and practical. Finally, the high-temperature resistant tape layer is used to adhere and position the membrane electrode to be cut. Finally, the overall cutting of the membrane electrode is achieved by hot pressing or other methods. The high-temperature resistant tape layer has the characteristics of high temperature resistance, corrosion resistance, and high adhesion. When the membrane electrode is cut by hot pressing, the high-temperature resistant tape layer ensures the positioning effect of the membrane electrode and avoids displacement during the stamping and cutting process.

[0016] 3. The positioning adhesive blocks are arranged in an array along the longest side of the cutting tool, and can slide up and down to allow for selection of the number of positioning adhesive blocks according to actual needs. This can be achieved by selecting a continuous array of positioning adhesive blocks or by selecting them intermittently, thus meeting the required adhesion length and area of ​​the electrode to be cut. The most suitable adhesion positioning orientation is adopted to facilitate subsequent hot pressing and cutting processes. Finally, a limiting mechanism fixes the selected positioning adhesive blocks, ensuring sufficient positioning of the electrode to be cut.

[0017] 4. The limiting mechanism includes a sliding limiting rod, and there is no limiting rod penetrating the limiting rigid substrate. Its top surface is lower than the limiting rod. At this time, the rigid substrate in the same array length can be randomly selected according to the needs. The limiting rod can penetrate multiple discontinuously selected rigid substrates at the same time, thereby fixing the position of the positioning adhesion block to meet the adhesion and positioning effect of the membrane electrode under various demand environments. That is, by using continuous rigid substrates, individual rigid substrates, and spaced rigid substrates, the limiting characteristics of the freely movable limiting rod can meet the adhesion and positioning effect of the membrane electrode in multiple directions and a large area. This makes it convenient for the staff to provide support and positioning for different parts based on the overall planar characteristics of the membrane electrode, further ensuring that the membrane electrode is placed horizontally and stably on this device and improving the hot pressing effect.

[0018] 5. The soft support layer provides support for the membrane electrode to be cut, ensuring that the membrane electrode is placed flat on the device before it is fully adhered and positioned, preventing deformation during the placement process and ensuring that the custom cutting tool is correctly positioned in the cutting area of ​​the membrane electrode. Attached Figure Description

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings described in the following are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of the drawings.

[0020] Figure 1 is a schematic view of the base and various structural components on the base in the cutting and shaping device in embodiment 1.

[0021] Figure 2 is Figure 1 is a partial enlarged view of A in the above figure, and is also a schematic view of the positioning and adhering block.

[0022] Figure 3 is a schematic view of the structure after the membrane electrode is placed on the cutting and shaping device and the pressing plate is pressed;

[0023] Figure 4 is a schematic view of the base and various structural components on the base in the cutting and shaping device in embodiment 2.

[0024] Figure 5 is Figure 2 is a partial enlarged view of B in the above figure.

[0025] In the figure: 1, base; 1-1, positioning column; 1-2, custom cutting tool; 1-3, hollow groove; 2, positioning and adhering block; 2-1, hard bottom layer; 2-2, foam adhesive layer one; 2-3, rubber layer; 2-4, foam adhesive layer two; 2-5, high-temperature-resistant adhesive tape layer; 3, membrane electrode; 4, pressing plate; 5, limiting mechanism; 5-1, limiting rod; 5-2, limiting through groove; 6, soft supporting layer. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, and is by no means any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0029] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present disclosure, unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale of the various parts shown in the drawings. Techniques, methods, and apparatus known to those of ordinary skill are not discussed in detail because they would be considered as part of the state of the art. In all examples shown and discussed herein, any specific numerical value should be interpreted as merely an example, and not as a limitation. Other examples of the example embodiments can have different values. It is noted that like numbers and letters on the attached drawings designate like parts, such that further discussion of the same will not be repeated.

[0030] In the description of the present disclosure, it is to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present disclosure and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present disclosure: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0031] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, then a dependent "above" or "upper" becomes a "below" or "lower" device. Thus, the example term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial relative terms used herein interpreted accordingly.

[0032] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not connote any meaning of superiority, inferiority, or any other limitation on the scope of the present application to which it is applied. Thus, these words are used merely to distinguish one element from another.

[0033] Embodiment 1: A fuel cell membrane electrode cutting and shaping device, as shown in Figure 1 and 3 , mainly comprising a square base 1, a custom cutting tool 1-2 arranged on the base 1, and an upper pressing plate 4. The membrane electrode 3 to be cut is placed on the custom cutting tool 1-2, then the membrane electrode 3 is pressed by the upper pressing plate 4, and finally placed in a hot press. The hot press applies pressure to the upper pressing plate 4, and under the action of the pressure, the custom cutting tool 1-2 performs "one-cut" cutting on the membrane electrode.

[0034] In this embodiment, the base 1 of the cutting and shaping device is fixed with positioning columns 1-1 near the four corner ends, so that when the membrane electrode 3 to be cut is placed on the device, the positioning holes on the membrane electrode 3 can be matched with the positioning columns 1-1 respectively to achieve the preliminary positioning of the membrane electrode 3 on the device. The shape of the custom cutting tool 1-2 is customized according to the required cutting shape of the membrane electrode 3, so as to achieve "one-cut" of the membrane electrode 3. As shown in Figure 1 and 3 , the custom cutting tool 1-2 has the same shape as the membrane electrode, but the area is smaller than the membrane electrode, so as to cut out the required size of the membrane 4.

[0035] As shown in Figure 1As shown, the custom cutting tool 1-2 constitutes a closed frame shape, and a soft support layer 6 is filled in the closed frame shape constituted by the custom cutting tool 1-2 on the base 1, the upper surface of the soft support layer 6 is 0.5-1 mm lower than the upper end surface of the custom cutting tool 1-2, and in this embodiment, it is specifically 0.5 mm; the soft support layer 6 can be selected from fireproof cotton and the like with fireproof and high-temperature resistant properties, and the soft support layer 6 can realize the support of the entire surface of the membrane electrode 3, ensure that the membrane electrode 3 is placed horizontally and stably on the device, so that the custom cutting tool 1-2 can cut the membrane electrode 3 in the accurate position range; at the same time, the upper end surface of the positioning column 1-1 is also 0.5-1 mm lower than the upper end surface of the custom cutting tool 1-2, and in this embodiment, it is specifically 0.5 mm; at this time, when the to-be-cut membrane electrode 3 is placed on the cutting and shaping device, the positioning column 1-1 cannot completely penetrate the positioning hole of the to-be-cut membrane electrode 3, thereby avoiding that the to-be-cut membrane electrode 3 is completely positioned on the device, and facilitating the slight movement of the to-be-cut membrane electrode 3 on the device for subsequent accurate positioning.

[0036] As shown in Figure 1 and 2 , the base 1 is also provided with four positioning and adhering blocks 2 acting on the membrane electrode 3, the upper surface of the positioning and adhering block 2 is 0.5-1 mm lower than the upper surface of the custom cutting tool, and in this embodiment, it is 0.5 mm, and is parallel to the longest side of the custom cutting tool and is placed close to the positioning column 1-1; the positioning and adhering block 2 includes a hard bottom layer 2-1, a foam adhesive layer one 2-2, a rubber layer 2-3, a foam adhesive layer two 2-4, and a high-temperature resistant adhesive tape layer 2-5 from bottom to top, the hard bottom layer 2-1 can be fixedly arranged on the base 1, then the rubber layer 2-3 is adhered and positioned on the hard bottom layer 2-1 through the foam adhesive layer two 2-4, the foam adhesive layer two 2-2 is further adhered on the rubber layer 2-3 to realize the height compensation, and finally the high-temperature resistant adhesive tape layer 2-5 is pasted on the top and the adhesive surface of the high-temperature resistant adhesive tape layer 2-5 is upward to contact the membrane electrode 3, so as to realize the adhering and positioning of the membrane electrode 3; the upper pressing plate 4 and the hard bottom layer 2-1 can be selected from the plastic materials with high hardness and high-temperature resistance commonly used in the field, such as epoxy polyester and the like.

[0037] Specific implementation: the positioning hole on the to-be-cut membrane electrode 3 and the positioning column 1-1 on the device realize the preliminary positioning of the to-be-cut membrane electrode 3 on the device, after the position of the membrane electrode 3 on the device is determined, the positioning and adhering block 2 is pressed to make the high-temperature resistant adhesive tape layer 2-5 of the positioning and adhering block 2 fully contact the membrane electrode 3 and realize the adhering and positioning of the membrane electrode 3, then the upper pressing plate 4 is placed on the device, in order to ensure the position determination of the upper pressing plate 4 on the device, a hole slot for embedding the positioning column 1-1 can also be arranged on the upper pressing plate 4, finally the device is placed in a hot press for hot pressing, and the custom cutting tool on the device realizes the overall blanking of the membrane electrode 3.

[0038] Example 2, a fuel cell membrane electrode cutting and shaping device, differs from Example 1 in that, as shown in Example 1... Figure 4 As shown, multiple rigid base plates 2-1 are provided, and the specific number can be set according to the actual size of the device to ensure that the distance between every two rigid base plates 2-1 is 2-3mm. In this embodiment, 15 rigid base plates are specifically set. The rigid base plates 2-1 are arranged in an array along the length direction of the fixed cutting tool and are parallel to the longest side of the fixed cutting tool. At the same time, each rigid base plate 2-1 can slide up and down in the base 1. The sliding connection method of the rigid base plate 2-1 can be achieved by means commonly used in the field of mechanical structure, such as designing mounting blocks on the rigid base plate 2-1 and setting slide rails in the base. When the rigid base plate 2-1 is in the fully lowered state, its upper surface is lower than or flush with the upper surface of the base 1.

[0039] like Figure 4 As shown, hollow grooves 1-3 communicating with the outside are provided in the two longer sides of the base 1, so that the hard bottom layer 2-1 is exposed to the outside so that the staff can grasp and control the hard bottom layer 2-1 by raising and lowering it through the hollow grooves 1-3. In addition, the base 1 is provided with a limiting mechanism 5 that acts on the hard bottom layer 2-1.

[0040] like Figure 5As shown, the limiting mechanism 5 includes a limiting rod 5-1 slidingly arranged on the upper surface of the base 1. In this embodiment, there are two limiting rods 5-1, each arranged on the side of the base, one side controls the limiting of the hard base layer 2-1 arranged in two rows of arrays, the limiting rod 5-1 is parallel to the longest side of the customized cutting tool, and the hard base layer 2-1 of the positioning and adhering block is provided with a limiting through slot 5-2 for the limiting rod 5-1, that is, each limiting rod 5-1 can penetrate multiple hard base layers 2-1 in the same array length at the same time, when the limiting rod 5-1 penetrates the hard base layer 2-1 of the positioning and adhering block, the hard base layer 2-1 is in a "suspended" state, and then after other layers are adhered on it to form the positioning and adhering block 2, the top surface of the positioning and adhering block 2 needs to be controlled to be flush with the upper surface of the customized cutting tool 1-2, that is, at this time, the number of hard base layers 2-1 can be selected according to actual needs, so as to control the length of the positioning and adhering block 2, if a longer positioning and adhering block 2 is needed to fully ensure the adhesion of the membrane electrode 3, multiple continuous hard base layers 2-1 can be lifted to a certain height through the hollow slot 1-3, so that the limiting rod 5-1 can penetrate these hard base layers 2-1 at the same time, and after the positioning and adhering block 2 is fixed at this position, the foam adhesive layer one 2-2, the rubber layer 2-3, the foam adhesive layer two 2-4 and the high-temperature-resistant adhesive tape layer 2-5 are sequentially mounted on these selected hard base layers 2-1, the foam adhesive layer one 2-2, the rubber layer 2-3, the foam adhesive layer two 2-4 and the high-temperature-resistant adhesive tape layer 2-5 can be arranged on each individual hard base layer 2-1 respectively, or can be arranged as a continuous surface as a whole, such as Figure 4 and 5 As shown, the hard base layer 2-1 in this embodiment is arranged as a continuous surface.

[0041] In this embodiment, the hard base layer 2-1 not penetrated by the limiting rod 5-1 has a top surface lower than the limiting rod 5-1, at this time, the hard base layer 2-1 in the same array length can be randomly selected according to needs, and multiple discontinuously selected hard base layers 2-1 can be penetrated by the limiting rod 5-1 at the same time, so as to realize the position fixation of the positioning and adhering block 2, to meet the adhesion and positioning effect of the membrane electrode 3 in various demand environments, that is, the continuous hard base layer 2-1, the individual hard base layer 2-1 and the spaced hard base layer 2-1 are adopted, and the limiting characteristics of the movable limiting rod 5-1 are used to realize the adhesion and positioning of the membrane electrode 3 in multiple directions and a large area; as shown, the hard base layer 2-1 is arranged continuously. Figure 5

[0042] ​It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part 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 present application examples.

Claims

1. A fuel cell membrane electrode cutting and shaping device, comprising a base (1), wherein positioning posts (1-1) are fixedly provided on the base (1) near each of the four corners, and a shaping cutting tool (1-2) for acting on the membrane electrode (3) is fixedly provided, characterized in that... The upper end face of the positioning post (1-1) is lower than the upper end face of the cutting and shaping tool (1-2). The base (1) is provided with a plurality of positioning and adhesive blocks (2) that act on the membrane electrode (3). The upper end face of the positioning and adhesive block (2) is lower than the upper end face of the cutting and shaping tool (1-2). The cutting and shaping device also includes an upper pressure plate (4) that presses the membrane electrode (3).

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