Tabletting device and tableting method

Abstract

The invention relates to a sheet production device and method, and the device comprises a first unreeling mechanism which is used for unreeling and outputting a gas diffusion layer material belt; the second unwinding mechanism is used for unwinding and outputting a bottom supporting film material belt, the bottom supporting film material belt comprises a first bottom supporting film layer, a second bottom supporting film layer and adhesive layers, the second bottom supporting film layer and the adhesive layers are stacked on the same side of the first bottom supporting film layer, and the adhesive layers are located at the two ends of the second bottom supporting film layer in the width direction of the bottom supporting film material belt; the compounding mechanism is used for compounding the gas diffusion layer material belt and the side, provided with the second bottom supporting film layer, of the bottom supporting film material belt, and the two ends of the gas diffusion layer material belt are bonded with the adhesive layers correspondingly to form a composite material belt; the cutting mechanism and the stripping mechanism are used for allowing the composite material belt to sequentially flow through, the cutting mechanism is used for half cutting the composite material belt to cut off the gas diffusion layer material belt to obtain a gas diffusion layer sheet material attached to the second bottom supporting film layer, and the stripping mechanism is used for stripping the gas diffusion layer sheet material from the second bottom supporting film layer.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a tablet making device and a tablet making method. Background Art

[0002] Membrane Electrode Assembly (MEA) is the core component of fuel cells, which is also called a seven-in-one assembly. The seven-in-one assembly includes CCM (Catalyst Coated Membrane, catalyst / proton exchange membrane assembly), frames attached to both sides of the CCM, and gas diffusion layers. Generally, the frames are first attached to both sides of the CCM to obtain a five-in-one assembly, and then the gas diffusion layer sheets are attached to both sides of the five-in-one assembly to obtain a seven-in-one assembly.

[0003] In the conventional technology, the gas diffusion layer strip is directly cut to form gas diffusion layer sheets. Thus, the gas diffusion layer strip lacks support during cutting, resulting in poor cutting accuracy. Meanwhile, the conventional cutting method generates a lot of dust during cutting, which has a significant adverse effect. Summary of the invention

[0004] Based on this, it is necessary to provide a film-making device and a film-making method that can improve cutting accuracy and reduce dust in order to solve the above problems.

[0005] A film-making device, comprising:

[0006] A first unwinding mechanism, used for unwinding and outputting the gas diffusion layer material strip;

[0007] A second unwinding mechanism is used for unwinding and outputting a bottom supporting film strip, wherein the bottom supporting film strip comprises a first bottom supporting film layer, a second bottom supporting film layer and an adhesive layer, wherein the second bottom supporting film layer and the adhesive layer are both stacked on the same side of the first bottom supporting film layer, and in the width direction of the bottom supporting film strip, the adhesive layer is located at both ends of the second bottom supporting film layer;

[0008] A composite mechanism, used for composite the gas diffusion layer material strip with the side of the bottom film material strip having the second bottom film layer, and the two ends of the gas diffusion layer material strip are respectively bonded to the adhesive layer to form a composite material strip;

[0009] A cutting mechanism and a stripping mechanism through which the composite material strip flows in sequence, the cutting mechanism is used to half-cut the composite material strip to cut off the gas diffusion layer material strip to obtain a gas diffusion layer sheet material attached to the second supporting film layer, and the stripping mechanism is used to strip the gas diffusion layer sheet material from the second supporting film layer.

[0010] In one embodiment, the gas diffusion layer material strip unwound by the first unwinding mechanism has a protective film layer;

[0011] The film making device also includes a protective film winding mechanism, which is located between the first unwinding mechanism and the composite mechanism and is used to wind up the protective film layer on the gas diffusion layer material strip unwinding by the first unwinding mechanism.

[0012] In one embodiment, the film making device further includes a first deviation correcting mechanism, which is located between the first unwinding mechanism and the laminating mechanism to correct the deviation of the gas diffusion layer material strip before the gas diffusion layer material strip is laminated with the bottom film material strip;

[0013] and / or

[0014] The film-making device further comprises a second deviation-correcting mechanism, which is located between the second unwinding mechanism and the compounding mechanism, so as to correct the deviation of the base film material strip before the gas diffusion layer material strip is compounded with the base film material strip.

[0015] In one embodiment, the film-making device further includes a first tension control mechanism, which is located between the first unwinding mechanism and the composite mechanism, and is used to control the tension of the gas diffusion layer material strip;

[0016] and / or

[0017] The film-making device further includes a second tension control mechanism, which is located between the second unwinding mechanism and the composite mechanism to control the tension of the bottom film strip.

[0018] In one embodiment, the cutting mechanism is a flat knife die cutting mechanism.

[0019] In one of the embodiments, the sheet making device further comprises a waste material winding mechanism, which is located downstream of the stripping mechanism and is used to roll up the composite material strip after the gas diffusion layer sheet material is stripped off.

[0020] In one of the embodiments, the film making device further includes a finished product transporting mechanism, and the finished product transporting mechanism is used to sequentially transport the gas diffusion layer sheets stripped by the stripping mechanism to a testing station for testing and to a material unloading station for unloading.

[0021] In one of the embodiments, the tableting device further includes a finished product detection mechanism, and the finished product detection mechanism is used to detect the gas diffusion layer tablet material at the detection station.

[0022] In one embodiment, the film making device further includes a qualified material box and a waste material box;

[0023] The film making device also includes a finished product conveying mechanism, which picks up the gas diffusion layer sheets from the unloading station, and conveys the qualified gas diffusion layer sheets to the qualified product box and conveys the unqualified gas diffusion layer sheets to the waste box.

[0024] In one of the embodiments, the film making device also includes a paper separator box, and the finished product conveying mechanism is further used to convey the paper separators in the paper separator box to the qualified product box, so that the paper separators are provided between every two adjacent gas diffusion layer sheets.

[0025] A film making method comprises the steps of:

[0026] Unwinding and outputting the gas diffusion layer material strip;

[0027] Unwinding and outputting a bottom film strip, the bottom film strip comprising a first bottom film layer, a second bottom film layer and an adhesive layer, the second bottom film layer and the adhesive layer are both stacked on the same side of the first bottom film layer, and in the width direction of the bottom film strip, the adhesive layer is located at both ends of the second bottom film layer;

[0028] Compounding the gas diffusion layer material strip with the side of the base film material strip having the second base film, and bonding the two ends of the gas diffusion layer material strip to the adhesive layer respectively to form a compound material strip;

[0029] Cutting the composite material strip in half to cut off the gas diffusion layer material strip, thereby obtaining a gas diffusion layer sheet material attached to the second supporting film layer;

[0030] The gas diffusion layer sheet is peeled off from the second base film layer.

[0031] In one embodiment, the half-cutting of the composite material strip to cut off the gas diffusion layer material strip to obtain a gas diffusion layer sheet attached to the second base film layer comprises:

[0032] The composite material strip is cut in half by a flat knife die-cutting mechanism to cut off the gas diffusion layer material strip, thereby obtaining a gas diffusion layer sheet material attached to the second supporting film layer.

[0033] In the above-mentioned film-making device and film-making method, the compounding mechanism can compound the gas diffusion layer material strip and the bottom film material strip to form a compound material strip, and the cutting mechanism can half-cut the compound material strip to obtain the gas diffusion layer sheet. When half-cutting the composite material strip, only the gas diffusion layer material strip is cut, and the bottom film material strip is not cut. The bottom film material strip plays the role of fixing and conveying the gas diffusion layer material strip and supporting the gas diffusion layer material strip. When cutting, the displacement of the gas diffusion layer material strip can be reduced, and the cutting accuracy of the gas diffusion layer material strip can be guaranteed. In addition, the glue layer only contacts the waste material frame to prevent residual glue from being left on the finished gas diffusion layer sheet. At the same time, part of the dust formed during cutting will also stick to the bottom film material strip and be output, and the waste material frame will also be output with the bottom film material strip. The bottom film material strip not only plays the role of taking away the waste but also reduces the adverse effects of dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A structural diagram of a film-making device provided in one embodiment of the present application;

[0035] Figure 2 A structural diagram of a composite material strip formed by combining a gas diffusion layer material strip and a bottom membrane material strip;

[0036] Figure 3 It is a structural diagram of the bottom film strip;

[0037] Figure 4 This is a structural diagram of the gas diffusion layer material strip and the bottom membrane material strip when they are about to be combined;

[0038] Figure 5 It is a structural diagram when the gas diffusion layer sheet is separated from the waste frame;

[0039] Figure 6 for Figure 1 The structural diagram of the cutting mechanism of the film-making device shown in FIG. 1 when half-cutting the composite material strip;

[0040] Figure 7 A flowchart of a film production method provided in one embodiment of the present application.

[0041] Description of reference numerals:

[0042] 100, film making device; 10, first unwinding mechanism; 20, second unwinding mechanism; 30, compounding mechanism; 31, driving roller; 32, matching roller; 40, cutting mechanism; 50, peeling mechanism; 60, protective film winding mechanism; 70, first deviation correction mechanism; 80, second deviation correction mechanism; 90, first tension control mechanism; 110, second tension control mechanism; 120, waste material winding mechanism; 130, finished product transfer mechanism; 140, finished product inspection mechanism; 150, qualified product box; 160, waste box; 170, finished product handling mechanism; 180, paper separator box; 200, gas diffusion layer material strip; 300, bottom film material strip; 301, first bottom film layer; 302, second bottom film layer; 303, adhesive layer; 400, protective film layer; 500, gas diffusion layer sheet; 600, waste frame. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0049] See also Figure 1 In one embodiment of the present application, a film making device 100 is provided, comprising a first unwinding mechanism 10, the first unwinding mechanism 10 being used to unwind and output a gas diffusion layer material strip 200. Generally, the gas diffusion layer material strip 200 is a carbon paper material strip. It should be understood that in some other embodiments, the material of the gas diffusion layer material strip 200 is not limited.

[0050] The film making device 100 further includes a second unwinding mechanism 20, which is used to unwind and output the bottom film strip 300. Figure 2 and Figure 3 The bottom film strip 300 includes a first bottom film layer 301, a second bottom film layer 302 and an adhesive layer 303. The second bottom film layer 302 and the adhesive layer 303 are both stacked on the same side of the first bottom film layer 301. Figure 2 In the left-right direction, the adhesive layer 303 is located at both ends of the second bottom film layer 302. That is, in the thickness direction ( Figure 2 In the vertical direction (in the middle and upper directions), the second supporting film layer 302 and the adhesive layer 303 are both covered on the same surface of the first supporting film layer 301, and in the width direction of the supporting film strip 300, both ends of the second supporting film layer 302 have the adhesive layer 303. Specifically, the second supporting film layer 302 and the adhesive layer 303 are flush with the surface away from the first supporting film layer 301, so that when the supporting film strip 300 is composited with the gas diffusion layer strip 200, the composite effect of the gas diffusion layer strip 200 and the supporting film strip 300 can be guaranteed. Of course, in some other embodiments, the surfaces of the second supporting film layer 302 and the adhesive layer 303 away from the first supporting film layer 301 can also be arranged non-flush, which is not limited here.

[0051] Optionally, the first supporting film layer 301 and the second supporting film layer 302 are integrally formed. Of course, the first supporting film layer 301 and the second supporting film layer 302 can also be provided separately and combined together in a composite manner, which is not limited here.

[0052] The first supporting film layer 301 and the second supporting film layer 302 are made of a material with relatively high toughness to improve the supporting effect, such as a PET material with relatively high toughness. The adhesive layer 303 is made of a material with relatively good adhesion to improve the bonding effect of the adhesive layer 303 on the first supporting film layer 301 and the gas diffusion layer material strip 200, such as a UV material.

[0053] Continue reading Figure 1 The film making device 100 further includes a compounding mechanism 30, which is located downstream of the first unwinding mechanism 10 and the second unwinding mechanism 20, and is used to compound the gas diffusion layer material strip 200 with the side of the supporting film material strip 300 having the second supporting film layer 302, and when the gas diffusion layer material strip 200 is compounded with the second supporting film layer 302, the two ends of the gas diffusion layer material strip 200 in the width direction are respectively bonded with the adhesive layers 303 at the two ends, and at this time, the gas diffusion layer material strip 200 and the supporting film material strip 300 are compounded to form a compound material strip. That is, the middle part of the gas diffusion layer material strip 200 in the width direction is compounded with the second supporting film layer 302 located between the adhesive layers 303 at the two ends, and the two ends of the gas diffusion layer material strip 200 in the width direction are bonded with the first supporting film layer 301 through the adhesive layers 303 at the two ends. Generally, the width of the gas diffusion layer strip 200 is the same as the width of the base film strip 300, so that the gas diffusion layer strip 200 is exactly combined with the base film strip 300 in the width direction (see Figure 2 and Figure 4 ).

[0054] Continue reading Figure 1The film making device 100 further includes a cutting mechanism 40 and a stripping mechanism 50. The cutting mechanism 40 is located between the composite mechanism 30 and the stripping mechanism 50. The composite material strip can flow through the cutting mechanism 40 and the stripping mechanism 50 in sequence. The cutting mechanism 40 is used to cut the composite material strip in half to cut off the gas diffusion layer material strip 200. When the composite material strip is cut in half, the supporting film material strip 300 will not be cut, so as to obtain the gas diffusion layer sheet material 500 attached to the second supporting film layer 302. That is, refer to Figure 5 and Figure 6 When the cutting mechanism 40 cuts the composite material strip, only the composite part of the gas diffusion layer material strip 200 and the second supporting film layer 302 is cut, and the part bonded to the adhesive layer 303 is not cut. It should be noted that as the composite material strip is transported downstream, in the transport direction of the composite material strip, that is, in the length direction of the composite material strip, the cutting mechanism 40 can cut and form a plurality of gas diffusion layer sheets 500. Figure 5 The peeling mechanism 50 is used to peel the gas diffusion layer sheet 500 from the second supporting film layer 302, that is, under the action of the peeling mechanism 50, the gas diffusion layer sheet 500 formed by cutting by the cutting mechanism 40 can be separated from the waste frame 600 (the part of the gas diffusion layer strip 200 that does not form the gas diffusion layer sheet 500) and the second supporting film layer 302.

[0055] In the film-making device 100 provided in the embodiment of the present application, the compounding mechanism 30 can compound the gas diffusion layer material strip 200 and the bottom film material strip 300 to form a compound material strip, and the cutting mechanism 40 half-cuts the compound material strip to obtain the gas diffusion layer sheet material 500. When half-cutting the compound material strip, only the gas diffusion layer material strip 200 is cut, and the bottom film material strip 300 is not cut. The bottom film material strip 300 plays the role of fixing and conveying the gas diffusion layer material strip 200 and supporting the gas diffusion layer material strip 200, which can reduce the displacement of the gas diffusion layer material strip 200 during cutting and ensure the cutting accuracy of the gas diffusion layer material strip 200. In addition, the adhesive layer 303 only contacts the waste frame 600 to prevent residual adhesive from being left on the finished gas diffusion layer sheet material 500. At the same time, part of the dust generated during cutting will stick to the bottom film tape 300 and be output, and the waste frame 600 will also be output with the bottom film tape 300. The bottom film tape 300 not only takes away the waste but also reduces the adverse effects of the dust.

[0056] In some embodiments, see Figure 1The gas diffusion layer material strip 200 unrolled and outputted by the first unwinding mechanism 10 has a protective film layer 400. The film making device 100 further includes a protective film winding mechanism 60, which is located between the first unwinding mechanism 10 and the compounding mechanism 30 and is used to wind up the protective film layer 400 on the gas diffusion layer material strip 200 unrolled and outputted by the first unwinding mechanism 10. The protective film layer 400 can protect the gas diffusion layer of the gas diffusion layer material strip 200. Before the gas diffusion layer material strip 200 is compounded with the bottom film material strip 300, the protective film layer 400 is wound up to avoid the protective film layer 400 being attached to the gas diffusion layer sheet 500 formed by cutting.

[0057] The film making device 100 further includes a first deflection correcting mechanism 70, which is located between the first unwinding mechanism 10 and the compounding mechanism 30, so as to correct the deflection of the gas diffusion layer material strip 200 before compounding the gas diffusion layer material strip 200 with the bottom film material strip 300. By providing the first deflection correcting mechanism 70, the gas diffusion layer material strip 200 is corrected before entering the compounding mechanism 30, so that the compounding effect of the gas diffusion layer material strip 200 and the bottom film material strip 300 can be ensured.

[0058] Furthermore, the film-making device 100 further includes a second deflection correction mechanism 80, which is located between the second unwinding mechanism 20 and the compounding mechanism 30, so as to correct the deflection of the bottom film strip 300 before the gas diffusion layer strip 200 is compounded with the bottom film strip 300. By providing the second deflection correction mechanism 80, the bottom film strip 300 is corrected before entering the compounding mechanism 30, so that the compounding effect of the gas diffusion layer strip 200 and the bottom film strip 300 can be further ensured.

[0059] In some embodiments, the film making device 100 also includes a first tension control mechanism 90, which is located between the first unwinding mechanism 10 and the composite mechanism 30, and is used to control the tension of the gas diffusion layer material strip 200, so that the gas diffusion layer material strip 200 enters the composite mechanism 30 for composite with appropriate tension, thereby ensuring the composite effect of the gas diffusion layer material strip 200 and the bottom membrane material strip 300.

[0060] Furthermore, the film making device 100 also includes a second tension control mechanism 110, which is located between the second unwinding mechanism 20 and the compounding mechanism 30, and is used to control the tension of the bottom film strip 300, so that the bottom film strip 300 enters the compounding mechanism 30 with appropriate tension for compounding, thereby further ensuring the compounding effect of the gas diffusion layer strip 200 and the bottom film strip 300.

[0061] Continue reading Figure 1The composite mechanism 30 includes a driving roller 31 and a matching roller 32, and a composite gap is formed between the driving roller 31 and the matching roller 32. The gas diffusion layer material strip 200 and the bottom membrane material strip 300 can pass through the composite gap and be composited under the extrusion of the driving roller 31 and the matching roller 32. At the same time, the driving roller 31 can provide a driving force for the composite material strip to be transported downstream during the composite process.

[0062] In some embodiments, the cutting mechanism 40 is a flat knife die cutting mechanism, which is also called a flat knife die cutting mechanism or a knife plate die cutting mechanism. Flat knife die cutting is a method of flat pressing and flat die cutting using a flat knife template. Figure 6 When cutting, the composite material strip moves vertically with the blade, and the blade presses down vertically to achieve half-cutting of the composite material strip, that is, only the gas diffusion layer material strip 200 of the composite material strip is switched, and the bottom membrane material strip 300 is not cut. The cutting mechanism 40 adopts a flat knife die-cutting mechanism. Compared with the cutting method of the laser cutting mechanism (laser cutting will generate a large amount of dust, and the laser will generate a small amount of carbon fiber filaments inserted into the carbon pores during the cutting process, and the fiber may cause the subsequent sub-packaging process to be bad, and the equipment cost of the laser is relatively expensive), it can reduce the generation of dust, reduce the equipment cost and improve the yield of the subsequent sub-packaging process. Compared with the cutting method of hardware die-cutting (hardware die-cutting requires the hardware die to be installed above the deviation correction platform, which greatly increases the complexity of the mechanism and the difficulty of debugging. At the same time, the hardware die-cutting method also consumes more time when changing the model), it greatly reduces the complexity of the equipment and the difficulty of debugging. At the same time, it can also reduce the time consumed when changing the model.

[0063] After the gas diffusion layer sheet 500 is formed by half-cutting, the gas diffusion layer sheet 500 is no longer adhered to the second bottom film layer 302 and the waste frame 600 by the peeling mechanism 50. In the present application, there is no limitation on how the peeling mechanism 50 is specifically arranged, as long as the separation of the gas diffusion layer sheet 500 from the second bottom film layer 302 and the waste frame 600 can be achieved.

[0064] In some embodiments, see Figure 1 The film making device 100 further includes a waste material winding mechanism 120, which is located downstream of the stripping mechanism 50 and is used to roll up the composite material strip after stripping the gas diffusion layer sheet material 500 for easy recycling.

[0065] In some embodiments, the film-making device 100 further includes a finished product transfer mechanism 130, which is used to sequentially transfer the gas diffusion layer sheet material 500 stripped by the stripping mechanism 50 to the inspection station for inspection and the unloading station for unloading, so as to judge whether the gas diffusion layer sheet material 500 is a qualified product and unload the material after inspection. Specifically, the finished product transfer mechanism 130 includes a conveyor belt and a plurality of conveyor rollers, the conveyor belt is sleeved on the plurality of conveyor rollers, and the conveyor rollers drive the conveyor belt to move to transport the gas diffusion layer sheet material 500.

[0066] Optionally, in some specific embodiments, the stripping mechanism 50 not only has the function of stripping the gas diffusion layer sheet material 500, but also can transfer the stripped gas diffusion layer sheet material 500 to the finished product transport mechanism 130. In other specific embodiments, the stripping mechanism 50 only has the function of stripping the gas diffusion layer sheet material 500, and the gas diffusion layer sheet material 500 stripped by the stripping mechanism 50 is transferred to the finished product transport mechanism 130 through another structure.

[0067] The film making device 100 further includes a finished product detection mechanism 140, which is used to detect the gas diffusion layer sheet material 500 at the detection station to determine whether the gas diffusion layer sheet material 500 is a qualified product.

[0068] The tableting device 100 further includes a qualified product box 150 and a waste box 160. The tableting device 100 further includes a finished product conveying mechanism 170, which can grab the gas diffusion layer sheet material 500 from the unloading station and convey it to the qualified product box 150 or the waste box 160 to classify and place the gas diffusion layer sheet material 500.

[0069] Furthermore, the film making device 100 further includes a paper separator material box 180, in which paper separators are placed. The finished product transport mechanism 170 is also used to transport the paper separators in the paper separator material box 180 to the qualified product material box 150, so that there is a paper separator between each two adjacent gas diffusion layer sheets 500. In this way, two finished products are avoided when taking out materials in the next process.

[0070] See also Figure 7 Another embodiment of the present application further provides a film making method, comprising the steps of:

[0071] S110: unwinding and outputting the gas diffusion layer material strip 200;

[0072] S120: unwinding and outputting the bottom film strip 300, the bottom film strip 300 comprises a first bottom film layer 301, a second bottom film layer 302 and an adhesive layer 303, the second bottom film layer 302 and the adhesive layer 303 are both stacked on the same side of the first bottom film layer 301, and in the width direction of the bottom film strip 300, the adhesive layer 303 is located at both ends of the second bottom film layer 302. That is, in the thickness direction of the bottom film strip 300, the second bottom film layer 302 and the adhesive layer 303 are both covered on the same surface of the first bottom film layer 301, and in the width direction of the bottom film strip 300, both ends of the second bottom film layer 302 have the adhesive layer 303. Specifically, the second supporting film layer 302 and the adhesive layer 303 are flush with the surface away from the first supporting film layer 301, so that when the supporting film strip 300 is composited with the gas diffusion layer strip 200, the composite effect of the gas diffusion layer strip 200 and the supporting film strip 300 can be ensured. Of course, in some other embodiments, the surface of the second supporting film layer 302 and the adhesive layer 303 away from the first supporting film layer 301 may also be non-flush, which is not limited here.

[0073] S130: Compound the gas diffusion layer material strip 200 with the side of the supporting film material strip 300 having the second supporting film layer 302, and bond the two ends of the gas diffusion layer material strip 200 with the adhesive layer 303 respectively to form a compound material strip. That is, the middle part of the gas diffusion layer material strip 200 in the width direction is compounded with the second supporting film layer 302 located between the two end adhesive layers 303, and the two ends of the gas diffusion layer material strip 200 in the width direction are bonded with the first supporting film layer 301 through the adhesive layers 303 at the two ends. Generally, the width of the gas diffusion layer material strip 200 is the same as the width of the supporting film material strip 300, so that the gas diffusion layer material strip 200 is just compounded with the supporting film material strip 300 in the width direction.

[0074] S140: Half-cutting the composite tape to cut the gas diffusion layer tape 200 to obtain the gas diffusion layer sheet 500 attached to the second supporting film layer 302. That is, when the composite tape is cut, only the portion where the gas diffusion layer tape 200 is composited with the second supporting film layer 302 is cut, and the portion bonded with the adhesive layer 303 is not cut. It should be noted that, as the composite tape is conveyed downstream, in the conveying direction of the composite tape, that is, in the length direction of the composite tape, the cutting mechanism 40 can cut and form a plurality of gas diffusion layer sheets 500.

[0075] S150 : peeling the gas diffusion layer sheet 500 from the second base film layer 302 .

[0076] The film making method provided in the embodiment of the present application is to compound the gas diffusion layer material strip 200 and the bottom film material strip 300 to form a composite material strip, and half-cut the composite material strip to obtain the gas diffusion layer sheet 500. When half-cutting the composite material strip, only the gas diffusion layer material strip 200 is cut, and the bottom film material strip 300 is not cut. The bottom film material strip 300 plays the role of fixing and conveying the gas diffusion layer material strip 200 and supporting the gas diffusion layer material strip 200, which can reduce the displacement of the gas diffusion layer material strip 200 during cutting and ensure the cutting accuracy of the gas diffusion layer material strip 200. In addition, the adhesive layer 303 only contacts the waste frame 600 to prevent residual adhesive from being left on the finished gas diffusion layer sheet 500. At the same time, part of the dust formed during cutting will also stick to the bottom film material strip 300 and be output, and the waste frame 600 will also be output with the bottom film material strip 300. The bottom film material strip 300 not only plays the role of taking away the waste but also reduces the adverse effects of dust.

[0077] In some embodiments, step S140 includes:

[0078] The gas diffusion layer strip 200 is cut off by half-cutting the composite strip through a flat knife die-cutting mechanism to obtain a gas diffusion layer sheet 500 attached to the second supporting film layer 302 .

[0079] The flat knife die-cutting mechanism is also called a flat knife die-cutting mechanism or a knife plate die-cutting mechanism. Flat knife die-cutting is a method of flat pressing and flat die-cutting using a flat knife template. During cutting, the composite material strip and the blade move vertically, and the blade presses down vertically to achieve half-cutting of the composite material strip, that is, only the gas diffusion layer material strip 200 of the composite material strip is switched, without cutting the bottom membrane material strip 300. The cutting mechanism 40 adopts a flat knife die-cutting mechanism. Compared with the laser cutting mechanism (laser cutting will generate a large amount of dust, and the laser will generate a small amount of carbon fiber filaments inserted into the carbon pores during the cutting process, and the fiber may cause defects in the subsequent packaging process. At the same time, the equipment cost of the laser is relatively expensive), it can reduce the generation of dust, reduce equipment costs and improve the yield of the subsequent packaging process. Compared with the cutting method of hardware die-cutting (hardware die-cutting requires the hardware die to be installed above the correction platform, which greatly increases the complexity of the mechanism and the difficulty of debugging. At the same time, the hardware die-cutting method also requires more time when changing the model), it greatly reduces the complexity of the equipment and the difficulty of debugging. At the same time, it can also reduce the time consumed when changing the model.

[0080] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A film-making device, characterized in that: include: A first unwinding mechanism (10) is used for unwinding and outputting a gas diffusion layer material strip (200); A second unwinding mechanism (20) is used for unwinding and outputting a bottom supporting film strip (300), wherein the bottom supporting film strip (300) comprises a first bottom supporting film layer (301), a second bottom supporting film layer (302) and an adhesive layer (303), wherein the second bottom supporting film layer (302) and the adhesive layer (303) are both stacked on the same side of the first bottom supporting film layer (301), and in the width direction of the bottom supporting film strip (300), the adhesive layer (303) is located at both ends of the second bottom supporting film layer (302); A composite mechanism (30) for composite the gas diffusion layer material strip (200) with the side of the supporting film material strip (300) having the second supporting film layer (302), wherein both ends of the gas diffusion layer material strip (200) are respectively bonded to the adhesive layer (303) to form a composite material strip; A cutting mechanism (40) and a stripping mechanism (50) through which the composite material strip flows in sequence, wherein the cutting mechanism (40) is used to cut the composite material strip in half to cut off the gas diffusion layer material strip (200) to obtain a gas diffusion layer sheet (500) attached to the second supporting film layer (302), and the stripping mechanism (50) is used to strip the gas diffusion layer sheet (500) from the second supporting film layer (302).

2. The film-making device according to claim 1, characterized in that: The gas diffusion layer material strip (200) unrolled and output by the first unrolling mechanism (10) comprises a protective film layer (400); The film making device also includes a protective film winding mechanism (60), which is located between the first unwinding mechanism (10) and the composite mechanism (30) and is used to wind up the protective film layer (400) on the gas diffusion layer material strip (200) unwound and output by the first unwinding mechanism (10).

3. The film making device according to claim 1, characterized in that: The film-making device further comprises a first deviation-correcting mechanism (70), which is located between the first unwinding mechanism (10) and the laminating mechanism (30) to correct the deviation of the gas diffusion layer material strip (200) before the gas diffusion layer material strip (200) is laminated with the bottom film material strip (300); and / or The film making device further comprises a second deviation correcting mechanism (80), which is located between the second unwinding mechanism (20) and the compounding mechanism (30) to correct the deviation of the base film material strip (300) before the gas diffusion layer material strip (200) and the base film material strip (300) are compounded.

4. The film-making device according to claim 1, characterized in that: The film-making device further comprises a first tension control mechanism (90), wherein the first tension control mechanism (90) is located between the first unwinding mechanism (10) and the composite mechanism (30) and is used to control the tension of the gas diffusion layer material strip (200); and / or The film-making device further comprises a second tension control mechanism (110), wherein the second tension control mechanism (110) is located between the second unwinding mechanism (20) and the composite mechanism (30) and is used to control the tension of the bottom film material strip (300).

5. The film making device according to claim 1, characterized in that: The cutting mechanism (40) is a flat knife die cutting mechanism.

6. The film-making device according to claim 1, characterized in that: The film making device further comprises a waste material winding mechanism (120), which is located downstream of the stripping mechanism (50) and is used to roll up the composite material strip after the gas diffusion layer sheet material (500) is stripped.

7. The film making device according to claim 1, characterized in that: The film-making device further comprises a finished product transport mechanism (130), wherein the finished product transport mechanism (130) is used to sequentially transport the gas diffusion layer sheet material (500) stripped by the stripping mechanism (50) to a testing station for testing and to a material unloading station for unloading.

8. The film-making device according to claim 7, characterized in that: The tablet manufacturing device further comprises a finished product detection mechanism (140), wherein the finished product detection mechanism (140) is used to detect the gas diffusion layer tablet material (500) at the detection station.

9. The film-making device according to claim 7, characterized in that: The film making device also includes a qualified product box (150) and a waste material box (160); The film making device also includes a finished product transporting mechanism (170), which picks up the gas diffusion layer sheet material (500) from the unloading station, and transports the qualified gas diffusion layer sheet material (500) to the qualified product box (150) and transports the unqualified gas diffusion layer sheet material (500) to the waste box (160).

10. The film-making device according to claim 9, characterized in that: The film making device also includes a paper separator box (180), and the finished product transport mechanism (170) is also used to transport the paper separators in the paper separator box (180) to the qualified product box (150), so that the paper separators are located between every two adjacent gas diffusion layer sheets (500).

11. A film-making method, characterized in that: Includes steps: Unwinding and outputting a gas diffusion layer material strip (200); Unwinding and outputting a bottom film strip (300), the bottom film strip (300) comprising a first bottom film layer (301), a second bottom film layer (302) and an adhesive layer (303), the second bottom film layer (302) and the adhesive layer (303) being stacked on the same side of the first bottom film layer (301), and in the width direction of the bottom film strip (300), the adhesive layer (303) being located at both ends of the second bottom film layer (302); The gas diffusion layer material strip (200) is composited with the side of the base film material strip (300) having the second base film layer (302), and both ends of the gas diffusion layer material strip (200) are respectively bonded to the adhesive layer (303) to form a composite material strip; Cutting the composite material strip in half to cut the gas diffusion layer material strip (200) to obtain a gas diffusion layer sheet (500) attached to the second supporting film layer (302); The gas diffusion layer sheet (500) is peeled off from the second base film layer (302).

12. The tableting method according to claim 11, characterized in that: The method of half-cutting the composite material strip to cut the gas diffusion layer material strip (200) to obtain a gas diffusion layer sheet material (500) attached to the second supporting film layer (302) comprises: The composite material strip is cut in half by a flat knife die-cutting mechanism to cut off the gas diffusion layer material strip (200) to obtain a gas diffusion layer sheet (500) attached to the second supporting film layer (302).

Images