JP2015071243A - Mold for molding thermosetting resin molding and method of molding thermosetting resin molding using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a molding by a simple and efficient molding method by reducing the number of molding steps in painting and glaze-coating both inner and outer surfaces of the molding.SOLUTION: In a mold 1, a stripper plate 4 is arranged between a fixed-position upper mold 3 and a lower mold 2 capable of ascending and descending; pull-up means 5 is laid between the upper mold 3 and the stripper plate 4; the stripper plate 4, together with the lower mold 2, moves downward through a downward movement of the lower mold 2; the stripper plate 4 is locked with the pull-up means 5 when the upper mold 3 and the stripper plate 4 are opened at a required interval; and the locking stops the downward movement of the stripper plate and causes the lower mold 2 moving downward to be separated from the stripper plate 4. The downward movement of the lower mold 2 thereby forms a mold opening upper space 18 opened so as to allow work of arranging a material for a molding above the stripper plate 4 and also forms a mold opening lower space 19 opened so as to allow work of arranging a material below the stripper plate 4.

Description

  The present invention relates to a mold for molding a thermosetting resin molded product such as a bowl-shaped tableware obtained by compression molding, and a molding method using the mold.

  Conventionally, many molded articles obtained by compression molding using a thermosetting resin material such as melamine resin as a tableware made of a synthetic resin that is lightweight and does not break even if dropped. And, for bowl-shaped tableware made of thermosetting resin, the design quality is poor with only the base color of the molded product, so when molding the molded product, impregnate the same kind of resin as the molded product. Many products have been produced in which the appearance is improved by performing foil molding that integrates a printed foil (painting paper) such as a pattern or pattern with the base of the molded product. Moreover, in order to give the surface glossiness and the surface like a ceramic product and to protect the product surface, it is also made into the goods coated with the glaze which is a transparent resin material.

  For example, Patent Document 1 discloses a method for molding a thermosetting resin molded product such as a melamine resin, and further molding a molded product with painting and glaze on both the inside and outside surfaces. In this patent document 1, it consists of an upper concave mold, a lower convex mold, and a movable plate disposed between the concave mold (upper mold) and the convex mold (lower mold). A mold is used. When the molded product is moved from the lower mold to the upper mold in the middle of molding, a burr of the molded product is sandwiched between the upper mold and the moving plate fixed to the upper mold side. Thus, a technique for supporting the molded product and moving the molded product by opening the mold in this state is shown.

  A method for forming a molded article, which is a technique disclosed in Patent Document 1, in which painting is performed on both sides and glaze coating is applied on both sides, will be described below. In the following description, it is assumed that the upper concave mold is a fixed position mold and the lower convex mold is a mold that can be raised and lowered.

(1. Molding of molded product base)
First, the mold is opened, the upper concave mold is separated from the lower convex mold on which the moving plate is overlapped, and the base material of the molded product is introduced here, and the convex mold is raised The mold is clamped in a state where the moving plate is sandwiched between them, a molded product which is a base of the molded product is molded (compression molding), and the convex mold overlapping the moving plate is moved downward together with the moving plate, The molded product is opened in a state where it is positioned on the convex mold, and the base molding step is completed.

(2. Foil molding on the outer surface of the molded product)
A foil printed with a pattern, a pattern or the like impregnated with melamine resin or the like is introduced so as to correspond to the outer surface of the molded product located in the convex mold in the opened state. Then, the convex mold that was in the lower standby position moves upward, the movable plate is stacked on the lower surface of the concave mold, and the mold is clamped, and the necessary heat is applied so that the foil is integrated with the outer surface of the molded product, A foil is formed on the outer surface of the molding by applying pressure. Thereafter, the mold is opened by moving the moving plate and the convex mold downward while the molded product is positioned on the convex mold. This completes the foil forming step on the outer surface of the molded product.

(3. Glaze coating on the outer surface of the molded product)
Next, glaze is introduced so as to correspond to the outer surface of the molded product that is located in the convex mold by opening the mold. Then, the convex mold that was in the lower standby position moves upward together with the moving plate, and the movable plate is put on the lower surface of the concave mold and clamped, and the required heat and pressure are applied to the outer surface of the molded product. Apply glaze coating. In addition, when the concave mold at this time is overlapped with the movable plate, the movable plate is fixed so as to be integrated with the concave mold of the upper mold by switching the hook. When forming the glaze coating, burrs will enter between the concave mold and the moving plate. The burr is sandwiched between the concave mold and the moving plate, the molding is positioned in the concave mold, and the lower convex mold is moved downward so as to be away from the pair of the concave mold and the moving plate. Open the mold. This completes the glaze coating molding step on the outer surface of the molding. Further, the molded product is supported on the concave mold side, and the mold is opened away from the convex mold.

(4. Foil molding on the inner surface of the molded product)
Next, the foil is introduced so as to correspond to the inner surface of the molded product positioned in the concave mold in a state where the mold is opened. Specifically, the foil is disposed in the core portion of the convex mold. The convex mold that was at the lower standby position moves upward toward the concave mold that supports the molded product with the moving plate, and the convex mold is aligned with the lower surface side of the movable plate. The mold is clamped with the moving plate positioned between the mold and the mold, and the foil is molded on the inner surface of the molding by applying the required heat and pressure so that the foil is integrated with the inner surface of the molding. . Thereafter, the mold is opened by moving the convex mold downward so as to be away from the set of the concave mold and the moving plate in a state where the molded product is positioned on the concave mold using the burr. This completes the foil forming step on the inner surface of the molded product.

(5. Glaze coating on the inner surface of the molded product)
Next, glaze is introduced so as to correspond to the inner surface of the molded product located in the concave mold with the mold open, and specifically, the glaze is arranged in the core part of the convex mold. To do. The convex mold at the upper standby position moves upward toward the concave mold supporting the molded product with the moving plate, and the convex mold is aligned with the lower surface side of the movable plate. The mold is clamped so that the moving plate is positioned between the mold and the mold is subjected to glaze coating on the inner surface of the molded article by applying required heat and pressure. In addition, the moving plate is fixed so as to be integrated with the convex die by switching the hook while the concave die at this time is overlapped with the moving plate (switching for forming the next molded product). Then, with the molded product positioned on the convex mold, only the convex mold is moved downward to open the mold. This completes the glaze coating molding process on the inner surface of the molded product, and the molded product with double-sided painting and double-sided gray coating is located in the convex mold. finish.

Japanese Patent No. 4229972

  In the molding method described above, the inner and outer surfaces are painted and glaze coating is performed on the inner and outer surfaces to obtain a molded product that is rich in design and has a texture like ceramics.

  However, as described above, when performing foil molding and glaze coating molding on the outer surface of the substrate, the material is put in an open state, and then the mold is clamped, and molding conditions such as heat and pressure are applied. The molding process (mold opening-> material injection-> mold clamping-> molding-> mold opening) is performed in two steps, followed by foil molding and glaze coating molding on the inner surface of the substrate. The same two steps are performed, and if the forming of the substrate is included, a five-step forming step is performed. Therefore, in the above compression molding method, there is a problem that the manufacturing cycle becomes long and the manufacturing cost is increased when trying to manufacture a thermosetting resin molded product with double-sided painting and double-sided glaze coating. .

  Therefore, in view of the above circumstances, the present invention aims to reduce the number of molding steps when painting or glaze coating on both the inner and outer surfaces of a molded product, and molding with a simple and efficient molding method. The purpose is to obtain goods.

(Invention of Claim 1)
The present invention has been made in consideration of the above problems, and includes a lower mold having a convex portion and having a guide pin standing upward, which can be raised and lowered, and a concave portion corresponding to the convex portion. It is positioned between the upper mold with the fixed position and the lower mold and the upper mold, and is guided by the guide pins of the lower mold so that it can be raised and lowered. A molded product molding space comprising a stripper plate having a round opening, and surrounded by the convex mold part, the concave mold part and the peripheral edge of the opening part when clamping the stripper plate between the lower mold and the upper mold When the mold is opened, the molded product molded in the molded product molding space rides on the periphery of the opening of the stripper plate, and the mold is used for molding a thermosetting resin molded product supported by the stripper plate. Type,
The lifting means is passed from the upper mold of the position fixing to the stripper plate,
The lifting means is engaged with the stripper plate when the lower mold moves away from the upper mold together with the lower mold so that the upper mold and the stripper plate are opened at a required interval. , Away from the lower mold moving downward, above the lower mold,
A mold opening upper space above the stripper plate on which the molded product is mounted by the lower mold moving downward, and the stripper plate is separated from the upper mold so that the material can be placed on the molded product. A lower part of the stripper plate on which is placed, and the lower mold is separated from the stripper plate and has a configuration in which a lower mold opening space is formed so as to allow material placement work on the convex mold part. A mold for forming a thermosetting resin molded product is provided to solve the above problems.

(Invention of Claim 2)
In the above invention, one of the upper mold and the stripper plate may be in contact with the other of the upper mold and the stripper plate so that the upper mold and the stripper plate are opened. There is provided a stretchable separation pressing means for pressing both the stripper plate and the stripper plate,
The separation pressing means separates the stripper plate downward from the upper mold at the start of downward movement of the lower mold when the mold is opened, and moves the stripper plate overlapped with the lower mold that moves upward when the mold is clamped to the lower mold. It is possible to press.

(Invention of Claim 3)
Furthermore, in another invention, when molding a thermosetting resin molded product using the mold for molding a thermosetting resin molded product of the above invention,
As the lower mold moves downward, the lower mold and the stripper plate overlapping the lower mold are separated downward from the upper mold, and the lifting means is locked to the stripper plate separated from the upper mold. A mold in which the lower mold is separated from the stripper plate whose downward movement is stopped by locking, the mold opening upper space is formed on the stripper plate, and the mold opening lower space is formed below the stripper plate. In the opened state, put the base material of the molded product between the upper mold and the lower mold,
After the base material is charged, the lower mold moves upward, and the lower mold that moves upward is superimposed on the stripper plate, and the stripper plate that moves upward while overlapping the lower mold is superimposed on the upper mold. Clamping the stripper plate between the two, and molding the green molded product in the molded product formation space,
A primary molding step of opening the mold after forming the base molding and forming the mold opening upper space and the mold opening lower space by moving the lower mold downward while the base molding is supported by the stripper plate; ,
The painting foil is inserted so as to correspond to the molded product of the substrate supported by the stripper plate in the upper space of the mold opening, and for painting so as to correspond to the convex part of the lower mold in the lower space of the mold opening. The mold is clamped by placing a stripper plate between the upper mold and the lower mold by moving the lower mold upward, and is applied to both the inner and outer surfaces of the base molding. At the same time foil forming,
After the foil molding, a secondary molding step of performing the mold opening to form the mold opening upper space and the mold opening lower space by moving the lower mold downward while supporting the molded product foil-formed by the stripper plate;
In the space above the mold opening, the glaze coating material is introduced so as to correspond to the molded product that has been foil-molded supported by the stripper plate, and in the space below the mold opening, the glaze coating material is adapted to correspond to the convex mold part of the lower mold. The mold is clamped by placing a stripper plate between the upper mold and the lower mold by moving the lower mold upward, and is applied to both the inner surface and the outer surface of the foil molded product. Simultaneously performing glaze coating molding,
After the glaze coating molding, a third molding step of opening the mold in which the mold opening upper space and the mold opening lower space are formed by the lower mold moving downward while the molded article formed by the glaze coating is supported by the stripper plate. A thermosetting resin molded product molding method characterized by comprising: a thermosetting resin molded product molding method that solves the above-mentioned problems.

(Invention of Claim 4)
Still another invention is to form a thermosetting resin molded article using the mold for molding a thermosetting resin molded article of the above invention.
As the lower mold moves downward, the lower mold and the stripper plate overlapping the lower mold are separated downward from the upper mold, and the lifting means is locked to the stripper plate separated from the upper mold. A mold in which the lower mold is separated from the stripper plate whose downward movement is stopped by locking, the mold opening upper space is formed on the stripper plate, and the mold opening lower space is formed below the stripper plate. In the opened state, put the base material of the molded product between the upper mold and the lower mold,
After the base material is charged, the lower mold moves upward, and the lower mold that moves upward is superimposed on the stripper plate, and the stripper plate that moves upward while overlapping the lower mold is superimposed on the upper mold. Clamping the stripper plate between the two, and molding the green molded product in the molded product formation space,
A primary molding step of opening the mold after forming the base molding and forming the mold opening upper space and the mold opening lower space by moving the lower mold downward while the base molding is supported by the stripper plate; ,
Inject the glaze coating material so as to correspond to the molded product of the substrate supported by the stripper plate in the space above the mold opening, and inject the glaze coating material so as to correspond to the convex part of the lower mold in the space below the mold opening After that, the mold is clamped by placing a stripper plate between the upper mold and the lower mold by moving the lower mold upward, and simultaneously glaze coating on both the inner surface and the outer surface of the base molding. Molding,
After the glaze coating molding, a secondary molding process is performed in which the mold opening upper space and the mold opening lower space are formed by the downward movement of the lower mold in a state where the molded product formed by the glaze coating is supported by the stripper plate. A thermosetting resin molded product molding method characterized by comprising: a thermosetting resin molded product molding method that solves the above-mentioned problems.

(Invention of Claim 5)
In the above invention, one of the upper mold and the stripper plate may be in contact with the other of the upper mold and the stripper plate so that the upper mold and the stripper plate are opened. There is provided a stretchable separation pressing means for pressing both the stripper plate and the stripper plate,
When the mold is opened, the gap between the upper mold and the stripper plate can be opened before the gap between the stripper plate and the lower mold is opened by the pressing of the separation pressing means against the stripper plate.

(Invention of Claim 6)
Furthermore, in the above invention, when the mold is clamped, the stripper plate overlapped with the lower mold moving upward can be pressed against the lower mold by the separation pressing means.

(Effect of the invention of claim 1)
According to the invention of claim 1, when the mold is opened, the molded product rides around the opening of the stripper plate, and with the molded product supported by the stripper plate, the molded product is placed on the molded product above the stripper plate. Mold opening upper space that allows material placement work is formed, and mold opening lower space that allows material placement work to the convex mold part is formed below the stripper plate. It is possible to perform the work of associating the foil with the outer surface and the inner surface of the object together, so that the foil forming for both the inner and outer surfaces can be performed in one molding process, and similarly the work of associating the glaze material with the outer surface and the inner surface of the molded object The glaze coating on both the inside and outside can be done in one molding process.

  Therefore, when manufacturing a molded product in which double-sided painting is performed using the mold according to claim 1 and glaze coating is applied to both the inner and outer surfaces, one molding process for molding the substrate, for foil molding The three molding steps, one molding step and one molding step for glaze coating molding, can be completed, and the production efficiency is improved because the molding cycle is shortened.

(Effect of the invention of claim 2)
According to the second aspect of the present invention, the separation mold is provided on one of the upper mold and the stripper plate so as to open between the two. The stripper plate is separated downward from the upper mold at the start of downward movement of the plate.
During molding, when a relatively large burr is generated by the molding material (base material or glaze material) on the lower side of the molded product molding space, the molded product sticks to the inner surface side of the concave portion or the molded product. The state where the continuous burr sticks to the upper surface side of the die-matching surface is easy to continue, and the degree of adhesion between the upper die and the stripper plate remains high even after the clamping force is released, and the upper die There is a possibility that the stripper plate may stick, and if the mold is opened while the sticking state of the molded product to the concave mold portion side due to the generation of large burrs or the sticking state of the stripper plate to the upper die remains, There is a tendency that the molded product is positioned on the concave portion side of the upper die at the time of opening.
Therefore, by having a separation pressing means for separating the stripper plate downward from the upper mold at the start of mold opening, the upper mold is relatively moved in the direction of positively separating from the molded product at the start of mold opening, That creates a slash that separates the opposing surfaces of the inner surface of the concave mold part and the molded product, and creates a stencil that separates the opposing surfaces of the upper mold and the strip plate, leaving the molded product remaining in the concave part of the upper mold. It can be prevented more reliably.

Further, when the stripper plate overlaps with the lower mold that moves upward during mold clamping, the separation compression means presses the stripper plate against the lower mold, so the lower mold and the stripper on the molded product molding space side. The seam with the plate is very dense, which is advantageous for molding. The reason why this is advantageous is that, in this mold, a stripper plate is placed between the upper mold and the lower mold, and the molds are clamped by overlapping, and the pressure for closing the molding space is from the bottom. Although the pressure that pushes up the lower mold will be added, it is easy to disperse in the part that reaches the joint between the lower mold and the stripper plate through this lower mold, and the joint between the stripper plate and the lower mold can be closed tightly It becomes difficult.
Therefore, the stripper plate can be pressed against the lower mold by the separation pressing means, and the joint between the stripper plate and the lower mold can be closed closely. Therefore, the material is prevented from entering the joint between the lower mold and the stripper plate at the time of base molding or glaze coating molding, and the generation of burrs can be reduced. Moreover, since there is no shortage of material in the molding space due to the generation of burrs, overcuring can be prevented. Further, there is no need to set molding conditions in anticipation of the occurrence of burrs, and the molding time can be shortened.

(Effect of the invention of claim 3)
According to the invention of claim 3, when obtaining a molded article on which double-sided painting and double-sided glaze coating are performed, one molding step for molding the substrate, one molding step for foil molding, glaze coating molding Three molding processes, one molding process, are completed, and the molding cycle of molded products with double-sided painting and glaze coating on both inner and outer surfaces is shortened, leading to improved production efficiency. There is an effect.

(Effect of the invention of claim 4)
When trying to obtain a molded product having a glaze coating on both the inner and outer surfaces of the substrate according to the conventional method described above, a molding process for molding the substrate, a molding process for applying the glaze coating to the outer surface side of the substrate, The three molding steps are performed together with the molding step for applying the glaze coating to the inner surface side of the film. Therefore, even when it is going to manufacture the thermosetting resin molded product which carried out double-sided glaze coating, a manufacturing cycle becomes long.
Therefore, according to the invention of claim 4, when obtaining a molded article having a double-sided glaze coating, two molding processes, one molding process for molding the substrate and one molding process for molding the glaze coating. As a result, the molding cycle of a molded product having a glaze coating on both the inner and outer surfaces is shortened and the production efficiency is improved.

(Effect of the invention of claim 5)
According to the invention of claim 5, when the mold is opened by the downward movement of the lower mold, the gap between the upper mold and the stripper plate is opened before the gap between the stripper plate and the lower mold is opened by the pressing against the upper mold of the separation pressing means. I try to open it.
This is because, as described above, when molding, when a relatively large burr is generated by the molding material (base material or glaze material) on the lower side of the molded product molding space, the molded product sticks to the inner surface side of the concave mold part. The state where the burr continuous with the molded product sticks to the upper surface side of the mold mating surface is easy to continue, and the degree of adhesion between the upper mold and the stripper plate remains high even after the clamping force is released. There is a possibility that the stripper plate may stick to the upper mold, and the mold is opened while the state where the molding is stuck to the concave part of the molded product due to the generation of large burrs or the state where the stripper plate is stuck to the upper mold remains. If this occurs, there is a tendency that the molded product is positioned on the concave portion side of the upper die at the time of starting the mold opening.
Therefore, by opening the gap between the upper mold and the stripper plate before the gap between the stripper plate and the lower mold is opened by pressing the separation pressing means against the upper mold at the start of mold opening, It is possible to more reliably prevent the molded product from remaining in the concave mold portion of the upper mold by creating a slash that separates the opposing surfaces of the inner surface and the molded product from each other and also creates a slash that separates the opposed surfaces of the upper mold and the strip plate. .

(Effect of the invention of claim 6)
According to the invention of claim 6, when the mold is clamped by the downward movement of the upper mold, the stripper plate that has moved downward and overlapped with the lower mold is pressed against the lower mold by the separation pressing means. As in the case of, the material is prevented from entering the seam between the lower mold and the stripper plate at the base molding or glaze coating molding, and the generation of burrs can be reduced. Moreover, since there is no shortage of material in the molding space due to the generation of burrs, overcuring can be prevented. In addition, there is no need to set molding conditions that allow the generation of burrs, and the molding time can be shortened.

It is explanatory drawing which shows the clamping state in the superposition which arrange | positions a stripper plate between an upper mold | type and a lower mold | type in an example of the thermosetting resin molded product shaping | molding die concerning this invention. It is explanatory drawing which shows the mold opening in an example. It is explanatory drawing which shows the receiving part of the opening part of a stripper plate in a cross section. It is explanatory drawing which shows a raising means. It is explanatory drawing which shows roughly material input in the primary shaping | molding process used as the base shaping | molding in an example of the shaping | molding method which concerns on this invention. It is explanatory drawing which shows roughly the foil injection | throwing-in in the secondary shaping | molding process which performs painting. It is explanatory drawing which shows roughly glaze material input in the 3rd shaping | molding process which performs glaze coating. It is explanatory drawing which shows schematically the mold opening after shaping | molding of a molded article.

(Mold)
Next, the present invention will be described in detail based on the embodiment shown in FIGS. In the figure, reference numeral 1 denotes a mold for molding a thermosetting resin molded product by compression molding. The mold 1 includes a lower mold 2 which can be moved up and down as shown in FIGS. 1 and 2, and an upper side of the lower mold 2. And the stripper plate 4 positioned between the lower mold 2 and the upper mold 3 to support the molded product. Although not shown, a mechanism for raising and lowering the lower mold 2 and a stripper plate 4 placed between the upper mold 3 and the lower mold 2 and applying pressure upward to the lower mold 2 are applied. A molding apparatus is configured by providing a pressure mechanism and a heating mechanism.

(Lower mold, stripper plate)
The lower mold 2 of the mold 1 is supported so as to be movable up and down below the upper mold 3 by a lifting / pressurizing mechanism (not shown). And it has the convex part 5 which used the convex part as the core side product surface, and is provided with the several guide pin 6 which stands toward upper direction so that it may be illustrated. The stripper plate 4 positioned above the lower mold 2 has a through hole 7 through which the guide pin 6 passes at a position corresponding to the guide pin 6, and is guided to the guide pin 6 inserted through the through hole 7. In this way, the stopper plate 4 can be moved up and down, overlaps with the lower mold 2 that moves upward, and moves upward together with the lower mold 2 while overlapping with the lower mold 2, and overlaps with the lower mold 2 that moves downward It is also provided to move downward together with the lower mold 2. Further, the stripper plate 4 has an opening 8 at a position corresponding to the convex part 5 of the lower mold 2, and the convex part 5 is opened when the stripper plate 4 overlaps the lower mold 2 moving upward. 8 is provided so as to be fitted in.

  As shown in FIG. 3, around the opening 8 of the stripper plate 4, a molded product molded in the molded product molding space is mounted, and the molded product is supported by the stripper plate alone from below. 9 is provided. The receiving portion 9 is a portion having a surface shape that is continuous with the core-side product surface of the convex portion 5 that fits in the opening 8 and is a portion that constitutes a part of the surface surrounding the molded product formation space It is.

(Upper type)
As shown in the drawing, the upper mold 3 has a concave mold portion 10 in a position corresponding to the convex mold portion 5 and having a concave portion as a cavity-side product surface. The upper mold 3 has a stripper plate 4 and a lower mold 2 which are moved upward on the lower surface side so as to overlap each other with the stripper plate 4 interposed therebetween, so that the concave mold part 10 and the convex mold part 5 are opposed to each other, and a molded product therebetween. A molding space is formed, and the concave surface portion of the concave mold portion 10 is continuous with the receiving portion 9 at the periphery of the opening 8.

  The upper die 3 is provided with a relief hole 11 that allows the guide pin 6 to enter when the lower die 2 moves upward, and moves upward when the guide pin 6 enters the escape hole 11. The lower mold 2 is guided by the guide pins 6 and the concave mold part 10 is appropriately opposed to the convex mold part 5 with the stripper plate 4 in between. And in this invention, it overlap | superposed so that the stripper plate 4 may be located between the upper mold | type 3 and the lower mold | type 2 which moved upwards, and the state which the below-mentioned molding material was distribute | arranged to the molded article formation space The mold is clamped and the lower mold 2 is moved downward to open the mold as will be described later.

  In the mold 1 of the present invention, when the mold is opened, the space is opened so that the work for disposing the material above and below the stripper plate 4 above and below the stripper plate 4 is possible. The raising means 12 is provided so that is formed. Further, a separation pressing means 13 is provided to open the space between the upper mold 2 and the stripper plate 4 when the mold is opened, and to press the stripper plate 4 against the lower mold 2 during mold clamping.

(Raising means)
The lifting means 12 is a member having a long plate shape passed from the side surface of the upper mold 3 to the side surface of the stripper plate 4. In this embodiment, one end side of the lifting means 12 is the upper mold 3. It is fixed to the side surface by a fastening tool such as a bolt and is suspended downward from the fixed portion in the vertical direction of the mold. The hanging portion 14 from the upper mold 3 side is in slidable contact with the side surface of the stripper plate 4, and the boss 16 located on the side surface of the stripper plate 4 is inside the elongated hole 15 opened in the hanging portion 14. Are arranged to be relatively movable.

The upper end 15a on the upper mold fixing side of the long hole 15 of the lifting means 12 does not contact the boss 16 even when the stripper plate 4 overlaps the upper mold 3, and the lower end 15b of the long hole 15 The lower die 2 moves downward by opening, and moves downward together with the lower die 2 in a state of being overlapped with the lower die 2 moving downward, and the stripper plate 4 is separated from the upper die 3 so that a predetermined interval therebetween, that is, a molded product. The boss 16 is provided so as to be locked when the space above the mold opening upper space (described later) is obtained so that the material placement operation can be performed.
The boss 16 is engaged with the lifting means 12 when the boss 16 rides on the lower end portion 15b of the long hole 15, and the stripper is suspended from the fixed upper mold 3 via the lifting means 12. The plate 4 is supported, and when the stripper plate 4 in the supported state moves so as to be pushed up from the lower mold 2, the engaging relationship between the lifting means 12 and the boss 16 is lost.

  As described above, the long hole 15 of the lifting means 12 has a length longer than the distance at which the boss 16 can form the mold opening upper space from the position of the lower end portion 15b between the upper mold 3 and the stripper plate 4. Is. And since this raising means 12 is passed from the side surface of the upper mold 3 to the side surface of the stripper plate 4 and the boss 16 is located in the long hole 15, the stripper plate 4 is moved together with the lower mold 2 that moves downward by mold opening. When the upper die 3 and the stripper plate 4 are opened at a predetermined interval, the boss 16 is locked in the long hole 15 and the lower die 2 continues to move downward, so that the stripper plate 4 also moves to the lower die 2. Therefore, it will be located above the lower mold 2.

  The lower mold 2 is moved downward until the distance between the stripper plate 4 and the lower mold 2 becomes a distance at which a lower mold opening space (described later) that allows material placement work as a space below the stripper plate 4 is obtained. In the present embodiment, since the lifting means 12 is transferred from the upper mold 3 to the stripper plate 4, the lower mold 2 is moved downward when the mold is opened, so that the stripper plate 4 A space in which work such as material charging can be performed simultaneously is obtained above and below.

  Since the boss 16 is positioned so as to be relatively movable in the long hole 15, the lower die 2 is supported while the upper die 3 suspends the stripper plate 4 via the lifting means 12. Is moved upward, the lower mold 2 first overlaps the lower surface side of the stripper plate 4, and then the stripper plate 4 overlaps the lower surface side of the upper mold 3. The position of the lower end 15b in the long hole 15 can be adjusted by attaching a stopper member to the slide hole forming the long hole 15, and the upper side surface of the lifting means 12 can be adjusted. It is also possible to make it possible by adjusting the mounting position with respect to.

(Separation pressing means)
The separation pressing means 13 is composed of an extendable spring arranged so that the lower end protrudes from the storage recess 17 having the lower surface of the upper mold 3 as the open side, in the facing portion between the upper mold 3 and the stripper plate 4. It is. The separation pressing means 13 made of a spring abuts on the upper surface of the stripper plate 4 when the lower mold 2 moves upward (when the mold is clamped), and opens the gap between the upper mold 3 and the stripper plate 4. Both the upper mold 3 and the stripper plate 4 are pressed, and even if the upper mold 3 overlaps the stripper plate 4 tightly by clamping, the pressing force is continuously applied to the both from the storage recess 17. To do.

  When the lower die 2 is overlapped with the stripper plate 4 and pressed by the separation pressing means 13, the overlap between the lower die 2 and the stripper plate 4 in the molding space for molding becomes dense, and at the time of molding. At this time, it becomes difficult for the molding material to enter this portion, and therefore, there is an effect of suppressing the generation of burrs.

  Further, when the mold opening is performed from the state of mold clamping, the separation pressing means 13 exerts an action of pressing both the upper mold 3 and the stripper plate 4 in the direction of separating the upper mold 3 and the stripper plate 4 even when the lower mold 2 starts to move downward. Therefore, while the pressing force is working, only the upper die 3 moves relatively upward while maintaining the state in which the stripper plate 4 is superposed on the lower die 2.

  Thus, in the mold opening, when the lower mold 2 starts to move downward, the gap between the upper mold 3 and the stripper plate 4 spreads before the gap between the stripper plate 4 and the lower mold 2. At the start, the upper die 3 is relatively moved in a direction to be positively separated from the molding to be described later, and this causes the inner surface of the concave mold portion 10 and the opposed surfaces of the molding to be separated from each other. An object is more reliably prevented from remaining in the concave mold portion 10 of the upper mold 3.

(Molding method)
Next, an embodiment of the molding method according to the present invention using the mold 1 will be described below. In the molding method in this embodiment, a double-sided painting (double-sided foil molding) and a molded product having a glaze coating on both sides are formed into a primary molding step and double-sided foil molding. Compared to the case where the molded product is manufactured through the conventional five molding processes, the second molding process that performs the process and the third molding process that performs the double-sided glaze coating molding. The molding cycle is shortened to enable efficient production.

(Primary molding process)
In the primary molding step of molding the base material of the molded product, the base material is put into a mold that has been opened and the mold is clamped to perform molding. The stripper plate 4 that moves downward together with the lower mold 2 in the overlapped state is separated from the upper mold 3 to provide a required distance between the upper mold 3 and the stopper plate 4, and the portion where both are separated is opened to allow material placement work. The upper mold opening space 18 is assumed. Further, when the lower mold 2 moves downward with the mold opening upper space 18 formed, the lifting means 12 is locked to the boss 16 of the stripper plate 4 as described above, and the downward movement is stopped by this locking. When the lower mold 2 moving downward from the stripper plate 4 leaves and the required distance between the stripper plate 4 and the lower mold 2 is reached, the downward movement of the lower mold 2 is stopped, and the stopper plate 4 and the lower mold The part apart from 2 is defined as a mold opening lower space 19 that is open so that the material placement operation can be performed. (Open mold)

  In the state where the mold opening upper space 18 is formed on the stripper plate 4 and the mold opening lower space 19 is formed below the stripper plate 4, the upper mold 3 and the upper mold 3 are formed as shown in FIG. The base material 20 of the molded product is put into a portion between the lower mold 2. Figure 5 (Material input)

  After the base material 20 is charged, the lower mold 2 moves upward, the lower mold 2 first overlaps the stopper rate 4, and the stripper plate 4 and the lower mold 2 move upward to overlap the upper mold 3 with the stripper plate 4. The stripper plate 4 is disposed between the upper mold 3 and the lower mold 2 to perform mold clamping. (Clamping)

  Molded products formed by molding conditions such as heating and pressurizing are applied to the mold 1 that has been clamped, and formed by the convex part 5, the concave part 10, and the receiving part 9 of the opening 8 of the stripper plate 4. Form the substrate in the forming space. (Molding)

  After forming the green body, the mold opening operation is performed in a state where the base 21 which is the molded body is supported by the receiving portion 9 of the stripper plate 4. The stripper plate 4 that moves downward while overlapping the lower mold 2 moves away from the upper mold 3 and sets a required distance between the upper mold 3 and the stopper plate 4. The lower mold 2 that moves downward from the stripper plate 4 that has stopped moving downward by being locked to the lifting means 12 is separated, and the material placement work is performed in a portion where the stopper plate 4 and the lower mold 2 are separated from each other. A mold opening lower space 19 is formed so as to be openable. (Open mold)

  At the stage where the primary molding process is completed, a mold opening upper space 18 is formed above the stripper plate on which the substrate 21 is placed so that the molded product, that is, the material can be placed on the substrate 21, and the stripper A mold opening lower space 19 is formed below the plate 4 so as to allow material placement work to the convex mold part 5 of the lower mold 2. In the above-described mold opening operation, the opening between the upper mold 3 and the stripper plate 4 (relative upward movement of the upper mold 3) is caused between the stripper plate 4 and the lower mold 2 by the action of the above-described separation pressing means 13. Prior to opening, the stripper plate 4 is pressed against the lower mold 2 by the action of the separation pressing means 13 as described above even in the operation during mold clamping. This operation is performed at the time of mold opening and mold clamping in the following molding process.

(Secondary molding process)
After the primary molding process, the process proceeds to the secondary molding process. This secondary molding process is a process of performing foil molding on both the inner and outer surfaces of the substrate 21 for double-sided painting. The first molding process is completed, that is, the mold opening upper space 18 is formed on the stripper plate 4. This is followed by the mold opening state in which the mold opening lower space 19 is formed under the stripper plate 4. (Open mold)

  And, in the mold opening upper space 18 formed by the mold opening, the painting foil 22 is covered from above on the substrate 21 which is a molded product in the primary molding process supported by the stripper plate 4, In the mold opening lower space 19, the convex mold part 5 of the lower mold 2 is covered with a foil 22 for painting to be integrated with the inner surface of the substrate 21. (Material input) Fig. 6

  After the foil 22 is inserted, the lower die 2 is moved upward, and the upper die 3 is moved upward to perform the same mold clamping as described above, in which the stripper plate 4 is disposed between the upper die 3 and the lower die 2. (Clamping)

  Molding conditions such as heating and pressurization are applied to the mold 1 that has been clamped, and foil molding is simultaneously performed on both the inner and outer surfaces of the substrate 21 in the molded product formation space. (Molding)

  After the foil molding, the mold opening operation is performed in the same manner as described above with the stripper plate 4 supporting the molded products 23 on both the inner and outer surfaces of the substrate 21 and the mold opening upper space 18 on the stripper plate 4. The mold opening lower space 19 is formed under the stripper plate 4. (Open mold)

  In this way, even at the end stage of the secondary molding process, a space is formed above which the material can be supplied above the molded article 23 supported by the stripper plate 4 so that it can be continued to the next molding process. Similarly, a space where material can be supplied is formed below the molded product 23 which has already been molded.

(Third molding process)
After the second molding process, the process proceeds to the third molding process. The third molding step is a step of performing glaze coating molding on both the inner and outer surfaces of the molded product 23, and continues to the mold opening state after the second molding step. (Open mold)

  In the mold opening upper space 18 formed by the mold opening, the glaze material 24 is disposed on the molding 23 supported by the stripper plate 4 and the convex mold portion 5 of the lower mold 2 is disposed in the mold opening lower space 19. In addition, the glaze material 24 is arranged so as to correspond to the inner surface of the molded product 23. (Material input) Fig. 7

  After the glaze material 24 is charged, the lower mold 2 is moved upward, and the upper mold 3 is moved upward to perform the same mold clamping as described above in which the stripper plate 4 is arranged between the upper mold 3 and the lower mold 2. (Clamping)

  Molding conditions such as heating and pressing are applied to the mold 1 that has been clamped, and glaze coating molding is simultaneously performed on both the inner surface and the outer surface of the molded product 23 in the molded product formation space. (Molding)

  After the glaze coating molding, with the stripper plate 4 supporting the molded product 23 after the glaze coating molding, the same mold opening operation as described above is performed to form a mold opening upper space 18 on the stripper plate 4. A mold opening lower space 19 is formed under the stripper plate 4. (Open mold)

  Then, by removing the molded product 23, ie, the molded product 25, which has been subjected to glaze coating molding from the stripper plate 4 in the mold 1 that has been opened, one molding cycle is completed, and painting is made on both the inside and outside. At the same time, a molded product having a glaze coating on both the inside and outside is obtained.

  In the above embodiment, the separation pressing means 13 is provided on the upper mold 3. However, the present invention is not limited to this, and the separation pressing means may be provided on the upper mold facing portion of the stripper plate 4. .

The above-described embodiment shows a case where a molded product having a glaze coating on both the inner and outer surfaces is formed while painting is performed on both the inner and outer surfaces. Then, when a molded product in which glaze coating is applied on both the inner and outer surfaces of the substrate without painting on both the inner and outer surfaces of the substrate, it can be dealt with by changing the above-described example.
That is, without performing the secondary molding process for forming the foil in the above-described example, the third molding process for performing the double-sided glaze coating molding in the above-described example is changed to the above-described primary molding process for molding the substrate. This is a subsequent secondary molding step. This is because the molded product with the glaze coating on both the inner and outer sides of the substrate is obtained in two molding steps, the first molding step for molding the substrate and the second molding step for double-sided glaze coating molding. Compared to the case where a molded product is manufactured through three molding processes, the glaze coating molding process on the outer surface of the substrate and the glaze coating molding process on the inner surface of the substrate according to the conventional method, the molding cycle can be shortened and the production can be efficiently performed. .

  In the drawing, an arrow described below the lower mold 2 indicates a moving direction when the lower mold 2 moves upward.

DESCRIPTION OF SYMBOLS 1 ... Mold 2 ... Lower mold 3 ... Upper mold 4 ... Stripper plate 5 ... Convex part 8 ... Opening part 9 ... Receiving part 10 ... Concave part 12 ... Lifting means 13 ... Separation pressing means 15 ... Long hole 15a ... Upper end part 15b ... Lower end 16 ... Boss 18 ... Mold opening upper space 19 ... Mold opening lower space 20 ... Base material 21 ... Base 22 ... Foil 23 ... Molded product 24 ... Glaze material 25 ... Molded product

Claims (6)

A lower mold having a convex part and having a guide pin standing upwards, which can be raised and lowered, an upper mold having a concave part corresponding to the convex part, and the lower mold and the upper mold A stripper plate that is positioned between the mold and guided by the guide pin of the lower mold so that it can be raised and lowered, and has an opening into which the convex mold part fits when overlapped with the lower mold, Forming a molded product molding space surrounded by the convex mold part, the concave mold part and the peripheral edge of the opening when clamping the stripper plate between the upper mold and molding in the molded product molding space when opening the mold The molded product is placed on the periphery of the opening of the stripper plate, and is a mold for molding a thermosetting resin molded product that is supported by the stripper plate.
The lifting means is passed from the upper mold of the position fixing to the stripper plate,
The lifting means is engaged with the stripper plate when the lower mold moves away from the upper mold together with the lower mold so that the upper mold and the stripper plate are opened at a required interval. , Away from the lower mold moving downward, above the lower mold,
A mold opening upper space above the stripper plate on which the molded product is mounted by the lower mold moving downward, and the stripper plate is separated from the upper mold so that the material can be placed on the molded product. A lower part of the stripper plate on which is placed, and the lower mold is separated from the stripper plate and has a configuration in which a lower mold opening space is formed so as to allow material placement work on the convex mold part. A mold for molding thermosetting resin molded products. One of the upper mold and the stripper plate has both the upper mold and the stripper plate in contact with the other of the upper mold and the stripper plate so as to open the space between the upper mold and the stripper plate. There is provided an elastically spaced separating pressing means for pressing,
The separation pressing means separates the stripper plate downward from the upper mold at the start of downward movement of the lower mold when the mold is opened, and moves the stripper plate overlapped with the lower mold that moves upward when the mold is clamped to the lower mold. The mold for forming a thermosetting resin molded product according to claim 1, which is pressed. In molding a thermosetting resin molded product using the mold for molding a thermosetting resin molded product according to claim 1,
As the lower mold moves downward, the lower mold and the stripper plate overlapping the lower mold are separated downward from the upper mold, and the lifting means is locked to the stripper plate separated from the upper mold. A mold in which the lower mold is separated from the stripper plate whose downward movement is stopped by locking, the mold opening upper space is formed on the stripper plate, and the mold opening lower space is formed below the stripper plate. In the opened state, put the base material of the molded product between the upper mold and the lower mold,
After the base material is charged, the lower mold moves upward, and the lower mold that moves upward is superimposed on the stripper plate, and the stripper plate that moves upward while overlapping the lower mold is superimposed on the upper mold. Clamping the stripper plate between the two, and molding the green molded product in the molded product formation space,
A primary molding step of opening the mold after forming the base molding and forming the mold opening upper space and the mold opening lower space by moving the lower mold downward while the base molding is supported by the stripper plate; ,
The painting foil is inserted so as to correspond to the molded product of the substrate supported by the stripper plate in the upper space of the mold opening, and for painting so as to correspond to the convex part of the lower mold in the lower space of the mold opening. The mold is clamped by placing a stripper plate between the upper mold and the lower mold by moving the lower mold upward, and is applied to both the inner and outer surfaces of the base molding. At the same time foil forming,
After the foil molding, a secondary molding step of performing the mold opening to form the mold opening upper space and the mold opening lower space by moving the lower mold downward while supporting the molded product foil-formed by the stripper plate;
In the space above the mold opening, the glaze coating material is introduced so as to correspond to the molded product that has been foil-molded supported by the stripper plate, and in the space below the mold opening, the glaze coating material is adapted to correspond to the convex mold part of the lower mold. The mold is clamped by placing a stripper plate between the upper mold and the lower mold by moving the lower mold upward, and is applied to both the inner surface and the outer surface of the foil molded product. Simultaneously performing glaze coating molding,
After the glaze coating molding, a third molding step of opening the mold in which the mold opening upper space and the mold opening lower space are formed by the lower mold moving downward while the molded article formed by the glaze coating is supported by the stripper plate. And a method for forming a thermosetting resin molded product. In molding a thermosetting resin molded product using the mold for molding a thermosetting resin molded product according to claim 1,
As the lower mold moves downward, the lower mold and the stripper plate overlapping the lower mold are separated downward from the upper mold, and the lifting means is locked to the stripper plate separated from the upper mold. A mold in which the lower mold is separated from the stripper plate whose downward movement is stopped by locking, the mold opening upper space is formed on the stripper plate, and the mold opening lower space is formed below the stripper plate. In the opened state, put the base material of the molded product between the upper mold and the lower mold,
After the base material is charged, the lower mold moves upward, and the lower mold that moves upward is superimposed on the stripper plate, and the stripper plate that moves upward while overlapping the lower mold is superimposed on the upper mold. Clamping the stripper plate between the two, and molding the green molded product in the molded product formation space,
A primary molding step of opening the mold after forming the base molding and forming the mold opening upper space and the mold opening lower space by moving the lower mold downward while the base molding is supported by the stripper plate; ,
Inject the glaze coating material so as to correspond to the molded product of the substrate supported by the stripper plate in the space above the mold opening, and inject the glaze coating material so as to correspond to the convex part of the lower mold in the space below the mold opening After that, the mold is clamped by placing a stripper plate between the upper mold and the lower mold by moving the lower mold upward, and simultaneously glaze coating on both the inner surface and the outer surface of the base molding. Molding,
After the glaze coating molding, a secondary molding process is performed in which the mold opening upper space and the mold opening lower space are formed by the downward movement of the lower mold in a state where the molded product formed by the glaze coating is supported by the stripper plate. And a method for forming a thermosetting resin molded product. One of the upper mold and the stripper plate has both the upper mold and the stripper plate in contact with the other of the upper mold and the stripper plate so as to open the space between the upper mold and the stripper plate. There is provided an elastically spaced separating pressing means for pressing,
The thermosetting resin according to claim 3 or 4, wherein, when the mold is opened, the space between the upper mold and the stripper plate is opened before the gap between the stripper plate and the lower mold is opened by the pressing of the separation pressing means against the stripper plate. Molding method for molded products.   6. The method for molding a thermosetting resin molded product according to claim 5, wherein, when the mold is clamped, the stripper plate overlapped with the lower mold moving upward is pressed against the lower mold by the separation pressing means.

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