JP2020077590A - Thermal compression bonding device for fuel battery - Google Patents

Abstract

To provide a thermal compression bonding device for a fuel battery capable of preventing an occurrence of a stain of a die due to movement of a laminate, relaxing collision of the laminate against the die and preventing a separator from being deformed.SOLUTION: A thermal compression bonding device 10 for a fuel battery includes: a holding/moving mechanism 12 for holding and moving a laminate S of a cathode side separator 112, an anode side separator 113 and a thermoplastic resin sheet 114; and a die 11 for performing thermal compression bonding while holding the laminate S from both sides of a lamination direction. The holding/moving mechanism 12 moves the laminate S from a prescribed direction, the die 11 is composed of an upper die 21 and a lower die 22, the lower die 22 is provided with a guide plate 14 for guiding the laminate S to a side to which the laminate S is moved between the lower die 22 and the upper die 21, and in the guide plate 14, an end part of the guide plate 14 enters into a position which is inside the end part of the lower die 22.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a thermocompression bonding device for a fuel cell, which bonds a pair of fuel cell separators with a thermoplastic resin sheet.

  As a thermocompression bonding device for a fuel cell of this type, a heated upper mold and a lower mold are attached to a laminated body sandwiching a thermoplastic resin sheet in which a membrane electrode gas diffusion layer assembly is joined by a pair of fuel cell separators. It is disclosed that a fuel cell is manufactured by pressurizing with a mold and thermocompressing the laminated body (see Patent Document 1).

JP, 2017-212126, A

  However, in the thermocompression bonding device for a fuel cell described in Patent Document 1, in the state of a laminate in which a thermoplastic resin sheet in which a membrane electrode gas diffusion layer assembly is joined by a pair of fuel cell separators is sandwiched, the end of the laminate is Problems arise when trying to grip a part and move it into the mold. That is, when the end portion of the laminated body is gripped, the pair of fuel cell separators, the thermoplastic resin sheet and the membrane electrode gas diffusion layer assembly, which form the laminated body, are bent and warped respectively at the center portions thereof. In addition, vibration during the movement of the gripped laminated body may cause the laminated body to move in the vertical direction, resulting in increased deflection.

  As shown in FIGS. 9 (a) and 9 (b), when the laminated body having such vertical deflection is moved into the mold, the deflected laminated body collides with the side surface of the mold. There is a problem that it will end up. The fuel cell separator may fall off during a collision. As a result, the thermoplastic resin comes into contact with the mold, and the mold may be contaminated by the resin, or the stack may violently collide with the mold, which may deform the pair of fuel cell separators. ..

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a thermocompression bonding device for a fuel cell capable of preventing the mold from being contaminated by a thermoplastic resin and the separator from being deformed. To do.

  The fuel cell thermocompression bonding apparatus according to the present invention is a fuel cell thermocompression bonding apparatus for bonding a pair of fuel cell separators with a thermoplastic resin sheet, wherein the pair of fuel cell separators and the thermoplastic resin sheet are Gripping and moving means for gripping and moving the laminated body in a laminated state, and a die for heating and pressurizing the laminated body while sandwiching the laminated body from both sides in the laminating direction to perform thermocompression bonding, The means moves the laminate from a predetermined direction with respect to the mold, the mold comprises an upper mold and a lower mold, and the lower mold is a side on which the laminate moves. A guide plate for guiding the laminated body between the lower mold and the upper mold, and the guide plate is an end of the guide plate to a position inside the end of the lower mold. It is characterized by the fact that the department is inside.

  In the thermocompression bonding apparatus for a fuel cell according to the present invention, the lower die for thermocompression bonding of the laminated body includes a guide plate for guiding the laminated body between the lower die and the upper die, and the guide plate is , The end of the guide plate is inserted to a position inside the end of the lower mold. With this configuration, when the gripping and moving means grips and moves the stacked body in a stacked state, even if the central portion of the stacked body is bent, the stacked body is guided before contacting the side surface of the lower mold. Since it contacts the plate and is guided between the lower mold and the upper mold, it is possible to prevent the mold from being contaminated by the thermoplastic resin. In addition, when the stack is moved, the guide plate reduces the collision with the lower mold, and thus the fuel cell separator can be prevented from being deformed.

  ADVANTAGE OF THE INVENTION According to this invention, the thermocompression-bonding apparatus for fuel cells which can prevent generation | occurrence | production of dirt of a metal mold | die and deformation of a separator can be provided.

FIG. 3 is an exploded perspective view of a fuel battery cell thermocompression bonded by the thermocompression bonding device for a fuel cell according to the embodiment of the present invention. FIG. 3 is a partial cross-sectional view of a fuel battery cell thermocompression bonded by the thermocompression bonding device for a fuel cell according to the embodiment of the present invention. It is a schematic block diagram of the thermocompression-bonding apparatus for fuel cells which concerns on embodiment of this invention, FIG.3 (a) shows the top view of the thermocompression-bonding apparatus for fuel cells, FIG.3 (b) shows the thermocompression-bonding for fuel cells. The side view of a pressure bonding apparatus is shown, and FIG.3 (c) shows the front view of the thermocompression bonding apparatus for fuel cells. The enlarged front view of the thermocompression bonding apparatus for fuel cells which concerns on embodiment of this invention. FIG. 4 is a process diagram showing a flow from stacking of stacked bodies thermocompression bonded by the thermocompression bonding device for a fuel cell according to the embodiment of the present invention to cell formation. It is explanatory drawing explaining the movement of the laminated body thermocompression-bonded by the thermocompression-bonding apparatus for fuel cells which concerns on embodiment of this invention, FIG.6 (a) shows the state which set the laminated body to the grip moving mechanism, FIG. 6B shows a state in which the flexure of the moved laminate is in contact with the guide plate, and FIG. 6C shows a state in which the laminate has reached between the upper die and the lower die. .. It is a figure of the thermocompression bonding apparatus for fuel cells which concerns on the modification of embodiment of this invention, FIG.7 (a) shows the top view of the thermocompression bonding apparatus for fuel cells, FIG.7 (b) is for fuel cells. The side view of a thermocompression bonding apparatus is shown, and FIG.7 (c) shows the front view of the thermocompression bonding apparatus for fuel cells. It is a figure of the thermocompression bonding apparatus for fuel cells which concerns on the other modified example of embodiment of this invention, FIG.8 (a) shows the top view of the thermocompression bonding apparatus for fuel cells, FIG.8 (b) shows a fuel. The side view of the thermocompression bonding apparatus for batteries is shown, and FIG.8 (c) shows the front view of the thermocompression bonding apparatus for fuel cells. It is a figure of the conventional thermocompression bonding apparatus for fuel cells, FIG.9 (a) shows the top view of the thermocompression bonding apparatus for fuel cells, and FIG.9 (b) shows the front view of the thermocompression bonding apparatus for fuel cells. ..

  A thermocompression bonding apparatus 10 for a fuel cell according to an embodiment to which the thermocompression bonding apparatus for a fuel cell according to the present invention is applied will be described with reference to the drawings.

  First, the fuel cell 100 in which thermocompression bonding is performed by the fuel cell thermocompression bonding device 10 will be described. As shown in FIG. 1, the fuel cell unit 100 includes a membrane electrode gas diffusion layer assembly (MEGA: MEGA: Electrode & Gas Diffusion Layer Assembly, hereinafter referred to as MEGA) 111, a cathode side separator 112, and an anode side separator 113. , And the thermoplastic resin sheet 114.

  By stacking a plurality of fuel cell units 100, a fuel cell stack (not shown) is manufactured. In addition, the cathode side separator 112 and the anode side separator 113 of the present embodiment constitute a pair of fuel cell separators of the thermocompression bonding device for a fuel cell according to the present invention.

  As shown in FIG. 2, the MEGA 111 includes a membrane electrode assembly (MEA: Membrane Electrode Assembly, hereinafter referred to as MEA) 121, a cathode side gas diffusion layer (GDL: Gas Diffusion Layer, hereinafter referred to as GDL) 122, and an anode. And the side GDL 123. The MEA 121 is composed of a joined body of an electrolyte membrane 131, a cathode side catalyst layer 132, and an anode side catalyst layer 133.

  The cathode side separator 112 is formed of a thin metal plate such as a steel plate, a stainless steel plate and an aluminum plate. The cathode side separator 112 is adhered to the thermoplastic resin sheet 114, and an oxidant gas flow channel 112a for flowing air as an oxidant gas is formed along the surface of the cathode side GDL 122. A titanium (Ti) thin film is formed on the surface of the cathode side separator 112, and a carbon layer is formed on the titanium thin film.

  The anode-side separator 113, like the cathode-side separator 112, is formed of a thin metal plate such as a steel plate, a stainless steel plate, and an aluminum plate. The anode-side separator 113 has a fuel gas flow passage 113a along which hydrogen as a fuel gas flows along the surface of the anode-side GDL 123. Similar to the surface of the cathode side separator 112, a titanium (Ti) thin film is formed on the surface of the anode side separator 113, and a carbon layer is formed on the titanium thin film.

  As shown in FIGS. 1 and 2, the thermoplastic resin sheet 114 includes a core material 114a formed of a thermoplastic resin in a frame shape, and adhesive layers 114b formed on the front surface and the back surface of the core material 114a. It is composed of layers. In the thermoplastic resin sheet 114, the cathode side separator 112 is adhered by the front surface adhesive layer 114b, and the anode side separator 113 is adhered by the rear surface adhesive layer 114b. Therefore, the cathode side separator 112 and the anode side separator 113 are adhered to each other with the thermoplastic resin sheet 114.

In the thermoplastic resin sheet 114, so-called cross-leakage, that is, hydrogen gas (H ₂ ) at the fuel electrode and oxygen gas (O ₂ ) at the air electrode pass through the electrolyte membrane 131 in a small amount, or electrical connection between the catalyst electrodes. It has a function to prevent short circuit. Each adhesive layer 114b is made of an adhesive member having higher rigidity, elasticity and viscosity than the electrolyte membrane. An example of the adhesive member is an adhesive made of epoxy resin.

  Next, the thermocompression bonding device 10 for a fuel cell according to this embodiment will be described with reference to the drawings.

  As shown in FIGS. 3A, 3B, 3C and 4, the fuel cell thermocompression bonding apparatus 10 includes a mold 11, a gripping moving mechanism 12, a rail 13, and a guide. The board 14 and a controller (not shown) are provided. The thermocompression bonding apparatus 10 for a fuel cell performs thermocompression bonding of a laminate S including a cathode side separator 112, an anode side separator 113, and a thermoplastic resin sheet 114. The gripping movement mechanism 12 of the present embodiment constitutes the gripping movement means of the thermocompression bonding device for a fuel cell according to the present invention.

  The mold 11 includes an upper mold 21, a lower mold 22, and a heating mechanism (not shown) that heats the upper mold 21 and the lower mold 22. The mold 11 has a structure in which the laminated body S is sandwiched between an upper mold 21 and a lower mold 22 to heat and pressurize.

  The upper mold 21 is provided with an elevating mechanism (not shown) so that the upper mold 21 descends when pressure is applied and rises when pressure is completed. The upper mold 21 is configured to come into contact with the cathode side separator 112 of the stacked body S by descending, and to heat and pressurize from the cathode side separator 112 side.

  The lower die 22 is stationary and installed just below the upper die 21, and the guide plate 14 is attached to the front surface 22a. The lower die 22 is configured to contact the anode-side separator 113 of the laminated body S and heat and pressurize from the anode-side separator 113 side.

  The gripping moving mechanism 12 includes a left gripping moving mechanism section 31 located on the left side of the mold 11 from the front side of the mold 11, and a right gripping moving mechanism section 32 located on the right side of the mold 11. Has been done. The gripping movement mechanism 12 grips the left end portion and the right end portion of the laminated body S, and moves the laminated body S between the upper die 21 and the lower die 22 from a predetermined direction with respect to the die 11. It has a structure to move. In the present embodiment, the predetermined direction is set as the direction toward the front surface 22a, starting from a position horizontally separated from the front surface 22a of the lower mold 22.

  The left gripping moving mechanism section 31 and the right gripping moving mechanism section 32 are controlled by the controller so as to grip the left end portion and the right end portion of the stacked body S, start moving at the same time, and move at the same speed (m / sec). Controlled. The left grip moving mechanism section 31 and the right grip moving mechanism section 32 move the laminated body S from the front surface 22a side of the lower die 22 to between the upper die 21 and the lower die 22 so that the laminated body S is It is arranged at a position for thermocompression bonding between the upper mold 21 and the lower mold 22.

  The left gripping movement mechanism section 31 is composed of a pair of gripping sections 41 arranged apart from each other, a main body section 42, and a moving section 43. Each of the pair of grips 41 has an upper hand 51 and a lower hand 52, and at least one of the upper hand 51 and the lower hand 52 moves in the vertical direction, and the left side of the stacked body S. It is configured to grip the end.

  The upper hand 51 and the lower hand 52 are attached to the main body 42, and when the laminated body S reaches a position where thermocompression bonding is performed between the upper mold 21 and the lower mold 22 and stops, the grip is released, It is configured to be moved and stored in the main body 42. By accommodating the upper hand 51 and the lower hand 52 in the main body portion 42, the upper mold 21 and the lower mold 22 perform thermocompression bonding of the stacked body S. The main body portion 42 is configured to attach the pair of grip portions 41, attach the moving portion 43, and move by the moving portion 43.

  Like the left gripping movement mechanism section 31, the right gripping movement mechanism section 32 includes a pair of gripping sections 41, a main body section 61, and a moving section 43 that are arranged apart from each other. Like the main body 42 of the left gripping movement mechanism 31, the main body 61 is configured to attach the pair of grips 41, attach the moving portion 43, and move by the moving portion 43.

  When the thermocompression bonding of the laminated body S is completed and the laminated body S after the thermocompression bonding is conveyed by another conveying mechanism, the left grip moving mechanism section 31 and the right grip moving mechanism section 32 move to their original positions. Then, the upper hand 51 and the lower hand 52 are configured to move so as to project from the inside of the main body portion 42 and grip the next stacked body S.

  The rail 13 is composed of a left rail 71 located on the left side from the front side of the lower die 22 toward the lower die 22, and a right rail 72 located on the right side toward the lower die 22. The left rail 71 and the right rail 72 respectively extend in a direction orthogonal to the front surface 22a of the lower mold 22, and are configured to guide the movement of the left grip moving mechanism section 31 and the right grip moving mechanism section 32. ..

  The guide plate 14 is arranged on the side where the laminated body S moves, and guides the laminated body S between the lower die 22 and the upper die 21, and more than the end portion of the lower die 22. The end portion of the guide plate 14 extends to the inner position. The guide plate 14 has a smooth surface and is made of synthetic resin or metal having high rigidity. The guide plate 14 extends in the width direction orthogonal to the moving direction of the stacked body S, and as shown in FIG. 3B, the front guide portion is inclined from the front surface 22a of the lower mold 22 at an angle θ (°). 81 and an upper surface guide portion 82 having the same width as the front surface guide portion 81 and extending inside the gap between the lower mold 22 and the upper mold 21. It should be noted that the angle θ (°) is appropriately selected based on setting specifications such as the shape and structure of the laminated body S and data such as experimental values.

  As shown in FIG. 4, the front surface guide portion 81 absorbs an impact when the deflected central portion of the laminated body S comes into contact with the lower mold 22, and guides the raised central portion of the laminated body S to be lifted. , And has a function of correcting the deflection of the laminated body S. The upper surface guide portion 82 has a function of guiding the laminated body S guided by the front surface guide portion 81 to a position between the lower die 22 and the upper die 21.

  As shown in FIG. 3 (b), the guide plate 14 is fixed to the front surface 22 a of the lower die 22 at the upper end portion of the front guide portion 81, and is attached to the upper surface 22 b of the lower die 22 by the upper surface guide portion 82. It is fixed.

  The controller is composed of a known microcomputer including a central processing unit that executes processing by a program and a storage device that stores the program, data, and the like. The controller is connected to the upper mold 21, the left grip moving mechanism unit 31, and the right grip moving mechanism unit 32, and based on the data and the program stored in the storage device, the upper mold 21, the left grip moving mechanism unit. 31 is configured to control each operation of the right gripping movement mechanism section 32.

  Next, a process of making the fuel cells 100 into cells in the thermocompression bonding device 10 for a fuel cell according to this embodiment will be briefly described with reference to the drawings.

  In the process of making the fuel cells 100 into cells, first, as shown in FIG. 5, the anode-side separator 113 is set in the left gripping movement mechanism section 31 and the right gripping movement mechanism section 32 (step S1). Next, the thermoplastic resin sheet 114 is laminated on the anode-side separator 113 (step S2).

  Then, the cathode side separator 112 is laminated on the thermoplastic resin sheet 114 (step S3). By this lamination, a laminated body S including the cathode side separator 112, the thermoplastic resin sheet 114, and the anode side separator 113 is formed.

  The left end portion of the formed laminated body S is grasped by the left grasping movement mechanism portion 31, and the right side end portion of the laminated body S is grasped by the right grasping movement mechanism portion 32 (step S4). Next, as shown by the arrows in FIG. 6A, the left gripping movement mechanism section 31 and the right gripping movement mechanism section 32 start moving toward the lower mold 22.

  By the movement of the left gripping movement mechanism section 31 and the right gripping movement mechanism section 32, as shown in FIG. 6B, the flexible portion of the laminated body S is guided by the guide plate 14 and guided by the front guide section 81. The flexure of the body S is corrected. As shown in FIG. 6C, the stacked body S is guided between the lower die 22 and the upper die 21 by the upper surface guide portion 82, reaches the position where the thermocompression bonding process is performed, and stops. (Step S5).

  When the laminated body S reaches the position where the thermocompression bonding process is performed and stops, the upper hand 51 and the lower hand 52 are moved and housed in the main body portions 42 and 61, respectively. When the upper hand 51 and the lower hand 52 are housed in the body portions 42 and 61, respectively, the stacked body S is heated and pressed by the upper mold 21 and the lower mold 22 heated by the heating mechanism. As a result, thermocompression bonding is performed.

  By this thermocompression bonding, the anode-side separator 113 and the thermoplastic resin sheet 114 are bonded together, and the cathode-side separator 112 and the thermoplastic resin sheet 114 are bonded together, so that the anode-side separator 113 and the cathode-side separator 112 are separated from each other. Bonding is performed (step S6), and the cell formation of the laminated body S is completed.

  Next, effects of the thermocompression bonding device 10 for a fuel cell according to this embodiment will be described.

  A thermocompression bonding apparatus 10 for a fuel cell according to an embodiment includes a cathode-side separator 112, a gripping moving mechanism 12 that grips and moves a stacked body S of an anode-side separator 113 and a thermoplastic resin sheet 114 in a stacked state. , And a die 11 that heats and pressurizes the laminated body S while sandwiching the laminated body S from the laminating direction.

  Further, in the thermocompression bonding apparatus 10 for a fuel cell according to the embodiment, the gripping moving mechanism 12 moves the laminated body S from a predetermined direction with respect to the mold 11, and the mold 11 includes the upper mold 21 and the lower mold. The lower die 22 includes a die 22 and a guide plate 14 for guiding the laminated body S between the lower die 22 and the upper die 21 on the side where the laminated body S moves. The guide plate 14 has a structure in which the end portion of the guide plate 14 is inserted to a position inside the end portion of the lower mold 22, and specifically, a direction orthogonal to the moving direction of the stacked body S. And a top guide that extends inside the gap between the lower die 22 and the upper die 21 and a front guide portion 81 that extends from the front surface 22a of the lower die 22 at an angle θ (°). And the part 82.

  With this configuration, when the gripping movement mechanism 12 grips and moves the stacked body S in a stacked state, the stacked body S contacts the side surface of the lower mold 22 even if the central portion of the stacked body S is bent. Before it does, it contacts the front guide part 81 of the guide plate 14 and is guided between the lower mold 22 and the upper mold 21. As a result, the effect of preventing the lower mold 22 from being contaminated by the thermoplastic resin is obtained.

  Further, the front guide portion 81 of the guide plate 14 reduces the impact when the deflected central portion of the laminated body S contacts the lower die 22, and prevents the cathode side separator 112 and the anode side separator 113 from being deformed. The effect is obtained. Further, the laminated body S is guided between the lower mold 22 and the upper mold 21 by the upper surface guide portion 82 of the guide plate 14. As a result, the flexure of the laminated body S has an effect that the flexure is corrected by the front surface guide portion 81 and the upper surface guide portion 82 of the guide plate 14.

  Further, since the fuel cell thermocompression bonding apparatus 10 according to the embodiment is provided with the guide plate 14, the mold interval between the lower mold 22 and the upper mold 21 can be minimized, and the press The advantage is that the time can be shortened and the productivity can be improved. Since the guide plate 14 has a simple mechanism, the cost of the thermocompression bonding apparatus 10 for a fuel cell does not increase, and the mold contamination due to the adhesion of the thermoplastic resin does not occur, so that it is not necessary to have a spare mold. Is obtained.

  In the thermocompression bonding apparatus 10 for a fuel cell according to this embodiment, the guide plate 14 has a front guide portion 81 and an upper guide portion 82, and is configured to be fixed to the front surface 22a and the upper surface 22b of the lower mold 22. The case was explained.

  However, in the thermocompression bonding apparatus for a fuel cell according to the present invention, the guide plate 14 has the front surface guide portion 81 and the upper surface guide portion 82, and has a structure other than the structure fixed to the front surface 22a and the upper surface 22b of the lower mold 22. You may comprise by the structure of. For example, it may be the fuel cell thermocompression bonding apparatus 10A according to the modification 1 of the structure in which the guide plate is provided in the upper mold 21, and the heat for the fuel cell according to the modification 2 of the structure in which the shape of the guide plate is changed. It may be the crimping device 10B.

  Hereinafter, a fuel cell thermocompression bonding apparatus 10A according to Modification 1 of the present embodiment and a fuel cell thermocompression bonding apparatus 10B according to Modification 2 will be described with reference to the drawings. When the fuel cell thermocompression bonding apparatus 10A according to Modification 1 and the fuel cell thermocompression bonding apparatus 10B according to Modification 2 have the same configuration as the fuel cell thermocompression bonding apparatus 10 according to the embodiment, The same reference numerals are given and mainly different configurations will be described.

(Modification 1)
In a thermocompression bonding device 10A for a fuel cell according to Modification Example 1 of the present embodiment, as shown in FIGS. 7A, 7B and 7C, the guide plate 14 is a fuel according to the embodiment. Similar to the thermocompression bonding device 10 for a battery, the guide plate 14A is provided on the lower mold 22 as well as on the upper mold 21.

  Like the fuel cell thermocompression bonding apparatus 10 according to the embodiment, the guide plate 14A has a smooth surface and is formed of synthetic resin or metal having high rigidity. The guide plate 14A has a structure in which the end portion of the guide plate 14A extends to a position inside the end portion of the upper mold 21, and specifically, the width orthogonal to the moving direction of the stacked body S. As shown in FIG. 7 (b), a front guide part 81A that extends in the direction and inclines at an angle θA (°) from the front surface 21a of the upper mold 21, and a lower mold having the same width as the front guide part 81A. The upper surface guide portion 82A extends inside the gap between the upper mold 21 and the upper mold 21. The angle θ (°) of the guide plate 14 and the angle θA (°) of the guide plate 14A may be the same or different.

  The guide plate 14A is fixed to the front surface 21a of the upper die 21 at the upper end portion of the front guide portion 81A, and is fixed to the upper surface 21b of the upper die 21 at the upper surface guide portion 82A.

  In the fuel cell thermocompression bonding apparatus 10A according to the first modification of the present embodiment, the same effect as that of the fuel cell thermocompression bonding apparatus 10 according to the embodiment is obtained. That is, when the gripping moving mechanism 12 grips and moves the stacked body S in a stacked state, even if the center portion of the stacked body S bends and moves up and down, the stacked body S moves to the upper mold 21. Before contacting the side surface or the side surface of the lower mold 22, the front guide part 81 of the guide plate 14 or the front guide part 81A of the guide plate 14A is contacted and the space between the lower mold 22 and the upper mold 21. Be guided. As a result, the upper mold 21 or the lower mold 22 is prevented from being contaminated by the thermoplastic resin, and the cathode-side separator 112 and the anode-side separator 113 are prevented from being deformed. The effect of being corrected is obtained.

  Further, in the fuel cell thermocompression bonding apparatus 10A according to the first modification of the present embodiment, the upper mold 21 is also provided with the guide plate 14A, so that the lower mold 22 and the upper mold 21 are further connected. The effect of being able to minimize the mold interval between them, shortening the pressing time, and improving productivity can be obtained.

(Modification 2)
In the thermocompression bonding device 10B for a fuel cell according to Modification Example 2 of the present embodiment, as shown in FIGS. 8A, 8B and 8C, the guide plate 14B is the fuel according to the embodiment. Like the battery thermocompression bonding device 10, it is provided in the lower mold 22.

  Similar to the fuel cell thermocompression bonding apparatus 10 according to the embodiment, the guide plate 14B has a smooth surface and is formed of synthetic resin or metal having high rigidity. The guide plate 14B has a structure in which the end of the guide plate 14B is inserted to a position inside the end of the lower mold 22. The guide plate 14B extends in the width direction orthogonal to the moving direction of the stacked body S, and as shown in FIG. 8B, the front guide portion is inclined from the front surface 21a of the upper mold 21 at an angle θB (°). 81B and an upper surface guide portion 82B having the same width as that of the front surface guide portion 81B and extending inside the gap between the lower die 22 and the upper die 21.

  As shown in FIG. 8C, the front guide portion 81B has a curved portion 83 whose central portion is curved downward. The curved portion 83 has a slope that gradually inclines toward the front surface 22a starting from a position separated from the front surface 22a of the lower mold 22. The guide plate 14B is fixed to the front surface 21a of the upper mold 21 at the upper end portion of the front guide portion 81B, and is fixed to the upper surface 21b of the upper mold 21 at the upper surface guide portion 82B.

  Also in the fuel cell thermocompression bonding apparatus 10B according to the second modification of the present embodiment, the same effect as that of the fuel cell thermocompression bonding apparatus 10 according to the embodiment can be obtained. That is, when the gripping moving mechanism 12 grips and moves the stacked body S in a stacked state, even if the central portion of the stacked body S is bent, before the stacked body S contacts the side surface of the lower mold 22. First, it comes into contact with the front guide portion 81B of the guide plate 14B and is guided between the lower die 22 and the upper die 21. As a result, the lower mold 22 is prevented from being contaminated by the thermoplastic resin, the cathode side separator 112 and the anode side separator 113 are prevented from being deformed, and the flexure of the laminate S is corrected.

  Further, in the thermocompression bonding device 10B for a fuel cell according to Modification Example 2 of the present embodiment, since the curved portion 83 is provided in the front guide portion 81B, it is possible to make line contact with the flexible portion of the laminated body S, and to laminate the laminated body S. The effect that the damage of the body S can be suppressed is obtained.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It is something that can be changed.

10, 10A, 10B ... Thermocompression bonding device for fuel cell, 11 ... Mold, 12 ... Grip moving mechanism, 13 ... Rail, 14, 14A, 14B ... Guide plate, 21 ...・ Upper mold, 21a, 22a ... front face, 21b ... lower face, 22 ... lower mold, 22b ... upper face, 31 ... left gripping movement mechanism part, 32 ... right gripping movement Mechanism part, 41 ... Gripping part, 42, 61 ... Main body part, 43 ... Moving part, 51 ... Upper hand, 52 ... Lower hand, 71 ... Left rail, 72 ... .. right rail, 81, 81A, 81B ... front guide part, 82, 82A, 82B ... top guide part, 83 ... curved part, 100 ... fuel cell, 111 ... MEGA, 112 ... Cathode side separator (fuel cell separator), 112a ... Oxidant gas flow channel, 113 ... Anode side separator (fuel cell separator), 113a ... Fuel gas flow channel, 114 ... Heat Plastic resin sheet, 114a ... Core material, 114b ... Adhesive layer, 121 ... MEA, 122 ... Cathode side GDL, 123 ... Anode side GDL, 131 ... Electrolyte membrane, 132 ...・ Cathode side catalyst layer, 133 ... Anode side catalyst layer, S ... Laminated body

Claims (1)

A thermocompression bonding device for a fuel cell for bonding a pair of fuel cell separators with a thermoplastic resin sheet,
Gripping and moving means for gripping and moving the stacked body of the pair of fuel cell separators and the thermoplastic resin sheet in a stacked state,
A mold for heating and pressing while sandwiching the laminate from both sides in the stacking direction to perform thermocompression bonding,
The grip moving means moves the laminated body from a predetermined direction with respect to the mold,
The mold comprises an upper mold and a lower mold,
The lower mold includes a guide plate that guides the laminate between the lower mold and the upper mold on the side where the laminate moves.
A thermocompression bonding apparatus for a fuel cell, wherein the guide plate has an end portion of the guide plate that extends to a position inside the end portion of the lower mold.

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