JP2010069776A - Nozzle touch mechanism in gasket shaping line of component of fuel cell - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nozzle touch mechanism having a simple constitution, which can shorten a cycle time to mold a gasket on the surface of the component of a fuel cell by joining so as to press a nozzle of an injection plunger to a plurality of mold gasket material injection parts easily and surely. <P>SOLUTION: The nozzle touch mechanism 1 includes a mold side hook 4 provided in each mold 2, an injection plunger side hook 5 provided on the injection plunger 3, which is engageable with and disengageable from the mold side hook 4, and a servomotor 6 driving so as to press the nozzle 3a of the injection plunger 3 to the gasket material injection part 2a of the mold 2 in a state that the mold side hook 4 is engaged with the injection plunger side hook 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a nozzle touch mechanism in a gasket molding line for fuel cell components, and more specifically, in a gasket molding line in which a plurality of molds for integrally molding a gasket are provided on the surface of a fuel cell component. The present invention relates to a nozzle touch mechanism that joins a gasket material injection portion of each mold so as to press the nozzle of an injection plunger.

  In a fuel cell, generally, a plurality of cells are stacked and both ends are sandwiched between end plates. As components of each cell, there are MEA (Membrane Electrode Assembly) provided with electrode layers on both sides of the electrolyte membrane, a porous gas diffusion layer disposed on both sides of the MEA, and a gas diffusion layer. It includes a porous body through which gas flows, and a MEA, a gas diffusion layer, and a separator that sandwiches the porous body. A member composed of the MEA and the gas diffusion layers disposed on both sides thereof is generally called MEGA. Reaction gas used for power generation of fuel cells such as fuel gas and oxidant gas flows through a manifold formed inside the fuel cell by stacking separators, and is supplied to the membrane electrode assembly via the porous body and gas diffusion layer Is done.

  In the fuel cell, between the electrolyte membrane and the electrode layer in the MEA, between the MEA in the MEGA and the gas diffusion layers disposed on both sides thereof, between the MEGA and the separator in the single cell, and the separator of the cells adjacent to each other A gasket for sealing a gas or a refrigerant is provided in between.

  When a gasket is provided on such a fuel cell component, an injection molding machine is used to accommodate the fuel cell component in a mold, and the gasket is placed in a cavity having a shape corresponding to the gasket to be molded. It is common practice to inject material. In a fuel cell, for example, a large number of cells, such as 300 to 400, are stacked. Therefore, when molding a gasket on its constituent parts, a plurality of molds are provided and the gasket material injection portion of each mold is provided. The material of the gasket is injected into the cavity of each mold by joining the nozzles of the injection plunger so as to press them.

  Patent Document 1 is known as a conventional technique of a nozzle touch mechanism that joins a gasket material injection portion of each mold so as to press a nozzle of an injection plunger. In Patent Document 1, a plurality of mold clamping devices are arranged side by side on a machine base, and when the nozzle touch is individually performed by laterally moving the injection device on the machine base with respect to the mold clamping device, Connect the piston rod side to the front of the movable injection device on the horizontal slide base so that the machine base acts as a reaction force of the nozzle touch, and then on the support base at the front of the horizontal slide base. On the other hand, a bracket is arranged for each mold clamping device on the machine table on the mold clamping device side, and a coupling bracket that can be engaged and disengaged from the lateral direction with respect to the bracket is provided at the end of the cylinder body. The cylinder body is placed on the support base so as to be movable in the axial direction by a side holder, and the front and rear surfaces of the holder are elastically supported by a pressure-controllable spring member to position the coupling metal relative to the bracket. It has a configuration that enables Nozzle touch apparatus is disclosed for a plurality of mold clamping device according to.

  In Patent Document 1, the end of the cylinder body 14 facing the mold clamping device side is in a lateral direction with respect to a T-shaped receiving bracket 15 provided on the machine base 1 for each of the mold clamping devices 2 and 3. It is described that a U-shaped connecting metal fitting 16 that can be engaged and disengaged and has engaging claws at the upper and lower ends of the inner end is provided (see 0010. For a description of Patent Document 1, refer to Patent Document 1) Are written as they are). Further, in Patent Document 1, the receiving metal 15 and the connecting metal 16 are fitted with a required clearance (about 5 mm) so that they do not rub against each other when engaged and disengaged due to the lateral movement of the injection device 5. The relative position is determined in advance, and it is described that this positioning can be easily performed by the position movement caused by the change of the elastic force of the spring members 20 and 20 supporting the holder 17 by elastic pressure ( 0013).

Japanese Patent Laid-Open No. 10-249890

  However, in the above-mentioned Patent Document 1, it is provided at the end of the cylinder main body 14 with respect to the receiving bracket 15 arranged for each of the mold clamping devices 2 and 3 on the machine base 1 on the mold clamping devices 2 and 3 side. Since the direction in which the connecting metal fitting 16 is engaged and disengaged is limited only from the lateral direction, there is a problem that the degree of freedom in design is limited and the apparatus is enlarged. Further, in Patent Document 1, the receiving metal 15 and the connecting metal 16 are fitted with a required clearance (about 5 mm) so that they do not rub against each other when the injection device 5 is engaged and disengaged due to lateral movement. Thus, since it is difficult to accurately touch the nozzle of the injection device 5 to the injection part of the mold, the cylinder body can be moved in the axial direction by the side holder. In addition to being placed on the support base, it is necessary to elastically support the front and rear surfaces of the holder with a spring member capable of adjusting pressure, which causes problems such as a complicated structure.

  Further, in Patent Document 1, a cylinder is used for driving the nozzle touch, and pressure oil is generally used as the working fluid of the cylinder. Therefore, the response of the drive control is not good, and the injection device It takes time to move the material, and it is difficult to shorten the molding cycle time. In order to avoid this problem, it is conceivable to simply replace the cylinder with an electric motor and a ball screw mechanism. However, as described above, the structure in which the bracket 15 and the coupling bracket 16 are limited in the lateral direction. Therefore, the injection device must also be moved in the lateral direction, and the control becomes complicated, and it takes time to engage and disengage the receiving metal 15 and the connecting metal 16, and it is difficult to reduce the molding cycle time after all. There was a problem of becoming.

  The present invention has been made in view of the above-described problems, and in a gasket molding line for integrally molding a gasket on the surface of a component part of a fuel cell, a gasket material for a plurality of molds provided with a simple configuration. Nozzle touch that can be joined to the injection part so that the nozzle of the injection plunger can be pressed easily and reliably, and that the cycle time for molding the gasket on the surface of the fuel cell component can be reduced. The purpose is to provide a mechanism.

  The nozzle touch mechanism according to claim 1 is a gasket molding line in which a plurality of molds for integrally molding a gasket are provided on the surface of a component part of a fuel cell. A nozzle of an injection plunger is provided at a gasket material injection portion of each mold. A nozzle touch mechanism for joining so as to press, a mold side hook provided in each mold, an injection plunger side hook provided on the injection plunger and engageable and disengageable with the mold side hook; And a servo motor for driving the nozzle of the injection plunger against the gasket material injection portion of the mold in a state in which the mold side hook and the injection plunger side hook are engaged with each other. It is.

  According to the first aspect of the present invention, when performing a nozzle touch for joining the gasket material injection portion of a predetermined mold so as to press the nozzle of the injection plunger, the mold side hook provided in the mold and the injection plunger are provided. With the injection plunger side hook engaged, the servo motor is driven to press the nozzle of the injection plunger against the gasket material injection portion of the mold. The injection plunger moves to approach the mold in a short time with good control response by driving the servo motor. After the nozzle touch, the mold side hook and the injection plunger side hook are engaged. Therefore, since the reaction force due to the nozzle touch is received, the nozzle of the injection plunger can be joined to be surely pressed by the nozzle touch force set in the gasket material injection portion of the mold. When the gasket is completely injected and moved to another mold, the pressing of the nozzle of the injection plunger against the gasket material injection portion of the mold is released, and the engagement between the mold side hook and the injection plunger side hook is released. Let go. The nozzle of the injection plunger is not limited in the moving direction, and is short from the gasket material injection portion of the mold that has been nozzle-touched so far to the position corresponding to the gasket material injection portion of the mold that is next nozzle-touched. Can move in time. Therefore, the cycle time for molding the gasket on the surface of the fuel cell component can be shortened.

An embodiment of a nozzle touch mechanism in a gasket molding line for fuel cell components of the present invention will be described in detail with reference to FIGS. In the drawings, the same reference numerals denote the same or corresponding parts.
The nozzle touch mechanism 1 of the present invention generally includes a gasket material injection portion of each mold 2 in a gasket molding line in which a plurality of molds 2 for integrally molding a gasket are provided on the surface of a fuel cell component M. 2a for joining the nozzle 3a of the injection plunger 3 so as to press it, and engaging and disengaging the mold side hook 4 provided on each mold 2 and the mold side hook 4 provided on the injection plunger 3. Servo for driving the nozzle 3a of the injection plunger 3 against the gasket material injection portion 2a of the mold 2 in a state where the possible injection plunger side hook 5, the mold side hook 4 and the injection plunger side hook 5 are engaged. A motor 6 and drive conversion means 7 for converting the driving force of the servo motor 6 into the movement of the injection plunger 3 are provided.

  First, the gasket forming line of the fuel cell component M provided with the nozzle touch mechanism 1 of the present invention will be described. In the embodiment shown in FIG. 1, a plurality of molds 2 and a mold opening / closing mechanism 20 for opening and closing each mold 2 are arranged on the gasket forming line of the fuel cell component M. An injection plunger 3 having a nozzle 3a for injecting a gasket material into the mold 2 is configured to move to a position corresponding to an arbitrary mold 2. The gasket forming line supports the moving means 8 for moving the injection plunger 3 and the component M and conveys it from the charging station to the vicinity of the predetermined mold 2, and the component on which the gasket is molded A movable table 9 that supports M and conveys from the vicinity of the predetermined mold 2 to the take-out station, and the component M is accommodated in the predetermined mold 2 from the movable table 9, and from the predetermined mold 2 A robot 10 that takes out the component M in which the gasket is molded and places it on a moving table, and a moving means 11 that moves the robot 10 to a predetermined position between the predetermined mold 2 and the moving table 9 are provided. Yes.

  The mold 2 in the embodiment shown in FIG. 1 is a so-called saddle type, and a tie bar 22 is erected on a base 21, and a corner of a stationary platen 23 is connected to the tip of the tie bar 22. ing. A movable platen 24 is inserted into the tie bar 22 so as to be movable up and down. On the opposing surfaces of the fixed platen 23 and the movable platen 24, an upper die 25 and a lower die 26 are attached as the mold 2, respectively. A mold clamping ram 20 is connected to the lower surface of the movable platen 24 as a mold opening / closing mechanism. The abutting surfaces of both molds 25 and 26 accommodate MEGA, separators, and the like as the component M on which the gasket of the fuel cell is formed, and the cavity corresponding to the shape of the gasket formed on the surface is closed. Sometimes carved to form. As shown in FIGS. 2 and 3, a hole 23 a for allowing the nozzle 3 a of the injection plunger 3 to enter is formed substantially at the center of the fixed platen 23, and the nozzle of the injection plunger 3 is formed on the upper surface of the upper mold 25. A gasket material injecting portion 2a for injecting gasket material into the cavity of the mold 2 with the tip of 3a abutting is formed to open upward.

  In the embodiment shown in FIG. 1, a plurality of molds 2 and mold opening / closing mechanisms 20 are arranged in two rows, and a gantry type transfer apparatus as a moving means arranged above each mold 2. 8, the injection plunger 3 is supported. The gantry-type transfer device 8 includes a pair of guide rails 30 and 30 provided in parallel above the molds 3 in each row, and a girder whose ends are movably installed between the guide rails 30 and 30. A rail 31 and a support member 32 that is movably provided on the girder rail 31 and supports the injection plunger 2 so as to be movable are provided.

  In this embodiment, a liquid silicone rubber material is employed as the gasket material. Therefore, the injection plunger 3 is supplied into the cylinder by, for example, a cylinder to which a liquid gasket material stored in a tank is supplied, a piston fitted in the cylinder, and a controllable drive of the piston. And a driving means for extruding the liquid gasket material by an accurate amount, and a nozzle 3a is formed at the tip of the cylinder.

The injection plunger 3 is supported by the support member 32 via the raising / lowering moving means 33. The lifting / lowering means 33 includes a pair of guide pins 34 erected on the support member 32, a lifting / lowering base 35 that supports the injection plunger 3 inserted through the guide pins 34 so that the vicinity of both ends is movable up / down, and A servo motor 6 provided, a ball screw shaft 36 connected to the rotation shaft of the servo motor 6, and a ball screw nut 37 provided on the support member 32 and screwed with the ball screw shaft 36 are provided. That is, the drive conversion mechanism 7 described above is configured by a ball screw mechanism including a ball screw shaft 36 and a ball screw nut 37 in this embodiment.
The injection plunger 3 is supported by the lifting platform 35 so that the nozzle 3a corresponds to the gasket material injection portion 2a that opens upward in the mold 2, that is, faces downward. Further, the cylinder of the injection plunger 3 is slidably inserted into a hole 32 a formed in the support member 32. The lifting / lowering moving means 33 is not limited to this embodiment. For example, the guide pins 34 can be erected on the lifting platform 35 and the guide pins 34 can be inserted into the holes of the lifting platform 35. In addition, the servo motor 6 having the ball screw shaft 25 can be provided on the support member 32, and the ball screw nut 37 can be provided on the lifting platform 35.

  The injection plunger 3 is moved above each mold 2 by the movement of the beam rail 31 with respect to the guide rail 30 and the movement of the support member 32 with respect to the beam rail 31, and the gasket material injection portion 2 a of any mold 2. You can move to the corresponding position. Further, by rotating and driving the ball screw shaft 36 in an arbitrary direction around the axis by the servo motor 6, the injection plunger 3 supported by the lifting platform 35 is moved downward so that the nozzle 3a is the gasket of the mold 2. The nozzle 3a is brought into contact with the material injecting portion 2a and moved upward to be separated from the gasket material injecting portion 2a of the mold 2 and retreated upward.

  As shown in FIG. 2 and FIG. 3, a plurality of (two in the figure shows a pair of cases) gold around the hole 23 a for allowing the nozzle 3 a of the injection plunger 3 of each fixed plate 23 to enter. A mold side hook 4 is provided. Since the mold side hook 4 is provided on the stationary platen 23 to which the mold 2 is attached, the present invention is expressed as the mold side hook 4 provided on the mold 2. The mold side hook 4 extends upward from the upper surface of the fixed platen 23 and is shaped like a bowl that is bent so that the tip is directed outward with respect to the center of the hole 23a.

  In addition, the base end portions of the plurality of injection plunger side hooks 5 corresponding to the mold side hooks 4 are rotatably supported on the support member 32 by shafts 5a. The tip of the injection plunger side hook 5 is formed in a bowl shape bent inward toward the nozzle 3 a of the injection plunger 3 supported by the support member 32. The injection plunger side hook 5 is provided with driving means such as a cylinder or a motor that is rotated so as to open and close each other about the shaft 5a. The driving means for the injection plunger side hook 5 is preferably configured so that both the injection plunger side hooks 5 open and close in synchronization. In addition, since the injection plunger side hook 5 is provided on the support member 32 on which the injection plunger 3 is supported, in the present invention, the injection plunger side provided on the injection plunger 3 and engageable with and disengageable from the mold side hook 4 is provided. It is expressed as hook 5. The length of the injection plunger side hook 5 is such that the tip bent toward the inside can be engaged and retracted by the opening / closing operation with respect to the tip bent toward the outside of the mold side hook 4. Is set.

  Next, the operation of the nozzle touch mechanism 1 of the present invention configured as described above will be described. When molding a gasket around the manifold of the MEGA or separator which is the fuel cell component M, the predetermined mold 2 (23, 24) is opened, the fuel cell component M is set, and the mold 2 is The fuel cell component M is housed inside the cavity. And while moving the girder rail 31 with respect to the guide rail 30, the support member 32 is moved with respect to the girder rail 31, and the injection plunger 3 is moved above each metal mold | die 2, and the component M of a fuel cell is carried out. Is moved so that the nozzle 3a of the injection plunger 3 is arranged correspondingly above the gasket material injection part 2a of the mold 2 accommodated in the cavity. At this time, as shown in FIG. 2, the lifting platform 35 supporting the injection plunger 3 is lifted away from the support member 32 by the rotational drive around the axis of the ball screw shaft 36 by the servo motor 6. The nozzle 3a of the injection plunger 3 is positioned so as to retreat above the upper end of the mold side hook 4 as shown by the chain line in FIG. There is no. Further, the injection plunger side hooks 5 are rotated by the driving means so as to be opened to each other, and their tips are retracted upward from the chain line in FIG. 2, and do not interfere with the stationary platen 23 and the mold side hooks 4. Therefore, the moving direction of the injection plunger 3 with respect to the gasket material injection portion 2a of each mold 2 is not limited.

  When the nozzle 3a of the injection plunger 3 is disposed correspondingly above the gasket material injection portion 2a of the mold 2 in which the fuel cell component M is accommodated in the cavity, as shown in FIG. The hooks 5 are rotated by the driving means so as to be closed to each other, and the tip portion bent so as to face the inside is engaged with the tip portion bent so as to face the outside of the mold side hook 4. By rotating the injection plunger side hook 5 so as to be closed in synchronization with each other, the tip of the nozzle 3a can be aligned with the gasket material injection portion 2a of the mold 2. In this state, the servo motor 6 is driven to rotate the ball screw shaft 36 screwed into the ball screw nut 37 held by the support member 32 about the axis. As a result, the elevator base 35 is quickly lowered along the guide pins 34 so as to be close to the support member 32, the injection plunger 3 supported by the elevator base 35 is also lowered, and the nozzle 3 a faces upward of the mold 2. The nozzle touch that comes into contact with the gasket material injection portion 2a is performed in a short time.

  At this time, since the injection plunger side hook 5 is engaged with the mold side hook 4, the lifting of the support member 32 due to the reaction of the nozzle touch force or the like is reliably prevented, and therefore the nozzle 3 a of the injection plunger 3 is The gasket 2 is reliably brought into contact with the gasket material injection portion 2a of the mold 2 with a predetermined nozzle touch force. Therefore, the servo motor 6 that constitutes the raising / lowering moving means 33 for driving the injection plunger 3 up and down is relatively small, and the time required to raise and lower the injection plunger 3 is short.

  When the nozzle touch is completed, the liquid material of the gasket is injected into the cavity from the gasket material injection portion 2a of the mold 2 by the injection plunger 3. Here, in the fuel cell, many cells composed of various components are stacked. Therefore, if even a slight variation occurs in the thickness of the molded gasket, the overall size of the fuel cell will be affected. Therefore, it is necessary to inject an accurate amount of gasket material.

  When the injection of the gasket material is completed or the solidification of the gasket material is completed, the servo motor 6 is driven and the ball screw shaft 36 screwed into the ball screw nut 37 held by the support member 32 is The lifting platform 35 is lifted so as to be separated from the support member 32 by reversely rotating around the axis. As a result, the injection plunger 3 rises quickly together with the lifting platform 35, and the nozzle 3 a is separated from the gasket material injection portion 2 a of the mold 2, and is higher than the upper end of the mold side hook 4 shown by the chain line in FIG. 2. Retreat upward.

  Subsequently, the injection plunger side hook 5 is rotated by the driving means so as to open each other, the engagement with the mold side hook 4 is released, and the tip of the injection plunger side hook 5 from the upper end of the mold side hook 4 indicated by the chain line in FIG. Evacuate upward. Accordingly, the moving direction of the injection plunger 3 is not limited as in the conventional technique on the plane above the mold 2, and therefore, the plurality of molds 2 and the mold opening / closing mechanisms 20 are arranged in two or more rows. Even if it is provided, the mold 2 into which the gasket material is injected next can be quickly moved in the shortest distance regardless of the direction (position) from the mold 2 in which the gasket material has been injected. That is, the molding cycle can be shortened.

  When the gasket material is solidified, the mold 2 (25, 26) is opened by the mold opening / closing mechanism 20, and the fuel cell component M with the gasket integrally formed on the surface is taken out by the robot 10 and placed on the movable table 9. Then, the fuel cell component M, which is then molded into a gasket at the charging station, is placed on the moving table 9 and transported to the vicinity of the mold 2. Hold M and set in the mold 2.

  Next, another embodiment of the present invention will be described with reference to FIGS. In the description of this embodiment, parts that are the same as or correspond to those in the above-described embodiment are denoted by the same reference numerals, description thereof is omitted, and only different parts are described. 4 is a plan view of the gasket forming line, and FIG. 5 is a front view of FIG. 4. For convenience of explaining the nozzle touch mechanism 1 of the present invention, FIG. 4 and FIG. 5 are perfectly aligned. Note that there are parts not shown.

  In the embodiment described above, the plurality of molds 2 and the mold opening / closing mechanism 20 are arranged in two rows, and the injection plunger 3 is configured to move. A gate frame in which the mold 3 and the mold opening / closing mechanism 20 are annularly arranged on a turntable 40 that is rotatable about a vertical axis, and the injection plunger 3 is provided so as to straddle the plurality of molds 2 and the mold opening / closing mechanism 20. It is supported by 41 support members 32.

  In this embodiment, the turntable 40 is rotationally driven so that the gasket material injection portion 2a of the predetermined mold 2 corresponds to the lower side of the nozzle 3a of the injection plunger 3 (see the arrow in FIG. 4). At this time, as shown in FIG. 2, the lifting table 35 supporting the injection plunger 3 is lifted away from the support member 32, and the nozzle 3 a of the injection plunger 3 is moved from the upper end of the mold side hook 4. Is also retracted upward, so that it does not interfere with the fixed platen 23 and the mold side hook 4. Further, the injection plunger side hook 5 is rotated so as to be opened by the driving means, and the tip is retracted above the upper end of the mold side hook 4 and interferes with the fixed platen 23 and the mold side hook 4. There is no. Therefore, even if the injection plunger side hook 5 is positioned on the rotation locus of the mold side hook 4 due to the rotation of the turntable 40, the injection plunger side hook 5 restricts the movement of the mold 2 due to the rotation of the turntable 40. There is nothing.

  When the rotation of the turntable 40 is stopped at a position where the gasket material injection portion 2a of the predetermined mold 2 corresponds to the lower side of the nozzle 3a of the injection plunger 3, as shown in FIG. Rotate to close each other and engage with the mold side hook 4. In this state, the servo motor 6 is driven, the injection plunger 3 is lowered together with the lifting platform 35, and the nozzle 3a is brought into contact with the gasket material injection portion 2a of the mold 2 to perform nozzle touch. At this time, since the injection plunger side hook 5 is engaged with the mold side hook 4, the lifting of the support member 32 due to the reaction of the nozzle touch force or the like is reliably prevented, and therefore the nozzle 3 a of the injection plunger 3 is The gasket 2 is reliably brought into contact with the gasket material injection portion 2a of the mold 2 with a predetermined nozzle touch force. Therefore, the servo motor 6 that constitutes the raising / lowering moving means 33 for driving the injection plunger 3 up and down is relatively small, and the time required to raise and lower the injection plunger 3 is short.

  When the nozzle touch is completed, the liquid material of the gasket is injected into the cavity from the gasket material injection portion 2a of the mold 2 by the injection plunger 3. As described above, it is necessary to inject an accurate amount of the gasket material in the molding of the fuel cell component M.

  When the injection of the gasket material is completed or the solidification of the gasket material is completed, the servo motor 6 is driven to raise the elevator 35, the injection plunger 3 is raised together with the elevator 35, and the nozzle 3a is moved to the gold. The mold 2 is moved away from the gasket material injection portion 2a of the mold 2 and retracted upward from the upper end of the mold-side hook 4. Subsequently, the injection plunger side hooks 5 are rotated so as to open each other, the engagement with the mold side hooks 4 is released, and the tips thereof are retracted above the upper ends of the mold side hooks 4. Thereby, the movement of the mold 2 relative to the injection plunger side hook 5 is not restricted, and the mold side hook 4 rotates below the injection plunger side hook 5 by the rotation of the turntable 40, and the injection plunger side The hook 5 can be engaged / released. Therefore, the direction in which the injection plunger side hook 5 and the mold side hook 4 are provided can be freely set regardless of the rotation of the turntable 40.

It is the perspective view partially cut away in order to demonstrate one Embodiment of the gasket molding line to which the nozzle touch mechanism of this invention is applied. FIG. 5 is a front view illustrating an embodiment of the nozzle touch mechanism of the present invention, for explaining a state where the injection plunger side hook is not engaged with the mold side hook and the nozzle is not touched. It is the front view shown in order to demonstrate the state which engaged the injection | pouring plunger side hook with the metal mold | die hook of the nozzle touch mechanism from the state of FIG. 2, and made the nozzle touch. It is the top view shown in order to demonstrate another embodiment of the gasket molding line to which the nozzle touch mechanism of this invention is applied. FIG. 5 is a front view of FIG. 4.

Explanation of symbols

  M: fuel cell components, 1: nozzle touch mechanism, 2: mold, 2a: gasket material injection part, 3: injection plunger, 3a: nozzle, 4: mold side hook, 5: injection plunger side hook, 6 : Servo motor, 7: Ball screw mechanism (drive conversion mechanism), 33: Elevating and moving means

Claims (1)

Nozzle touch mechanism that joins a gasket material injection portion of each mold so as to press the nozzle of an injection plunger in a gasket molding line in which a plurality of molds for integrally molding a gasket are provided on the surface of a fuel cell component Because
A mold side hook provided in each mold,
An injection plunger side hook provided on the injection plunger and engageable and disengageable with the mold side hook;
A nozzle touch comprising: a servo motor that drives the nozzle of the injection plunger against the gasket material injection portion of the mold in a state where the mold side hook and the injection plunger side hook are engaged with each other. mechanism.

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