JP2007021995A - Molding die - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a molding die which enables the formation of a molding having irregularities on the cylindrical body and the smooth release of a molding from the die without a plurality of processes, e.g. those including the molding parting. <P>SOLUTION: The molding die 1 is employed to mold a molding 110 having irregularities on the cylindrical body from a to-be-molded material A produced by forming a resin sheet having heat shrinkability into a cylindrical form. It has a die body 2 having an outer peripheral surface in the form of a uniform continuous surface perpendicular to the peripheral direction and engaged externally with the material A and a convex molding die 3 mounted internally on the die body 2 and appearing outward from the outer peripheral surface of the die body 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a molding die for molding a molded product having irregularities in a cylindrical body from a molding material in which a resin sheet having heat shrinkability is formed into a cylindrical shape.

  2. Description of the Related Art Conventionally, various containers for food and drink have been provided. As one of them, a container body that is molded into a bottomed cylindrical shape and contains food and drink, and an exterior body that covers the peripheral wall of the container body. There is a container with excellent heat insulation that has a double structure.

The said container main body is shape | molded by injection molding, sheet molding, etc., and food and drinks are accommodated. On the other hand, the exterior body heats the molding material and contracts it in the circumferential direction in a state where the molding material in which a resin sheet having heat shrinkability subjected to printing or the like is formed into a cylindrical shape is externally fitted to the mold. By this, it shape | molds in the shape according to the external shape of the said type | mold (for example, refer patent document 1).
JP 2005-15054 A

  By the way, although the container of the said structure is decorated by the printing with respect to this exterior body, in recent years, in addition to the decoration by printing, three-dimensional decoration, ie, forming an unevenness | corrugation in an outer periphery, can improve the further decoration property. It is being requested.

  Then, when forming irregularities on the body part of the exterior body, it is necessary to form irregularities on the outer periphery of the mold. However, as described above, the exterior body thermally shrinks the molding material fitted on the mold. Therefore, the unevenness formed on the outer periphery of the mold and the unevenness formed on the inner peripheral surface of the molded product are in a fitted state, and the molded product is released from the mold. Difficult to do.

  In order to release the mold and the molded product in such a state, a mold is formed by combining a plurality of divided molds, and when the molded product is released, the fitting between the concaves and convexes is released. It is possible to remove a plurality of divided molds from the molded product one after another (so-called mold splitting), but with such a system, an exterior body (molded product) that requires mass production from the viewpoint of productivity. Not suitable for. That is, a plurality of steps for appropriately moving a plurality of divided dies are required in the manufacturing process, and there is a limit to mass production of molded products. In addition, there is a problem in that a means for moving each divided mold at an appropriate timing is required, which complicates the structure.

  Therefore, in view of such a situation, the present invention can mold a molded product in which irregularities are formed on a cylindrical body, and smoothly release the molded product without going through a plurality of processes such as mold splitting. It is an object of the present invention to provide a mold that can be used.

  A molding die according to the present invention is a molding die for molding a molded product having irregularities on a cylindrical body from a molding material in which a heat-shrinkable resin sheet is formed into a cylindrical shape, and the outer peripheral surface thereof is A mold body that is formed on a continuous surface that is uniform in a direction perpendicular to the circumferential direction and on which a material to be molded is fitted, and a convex mold that is embedded in the mold body and protrudes from and protrudes from the outer circumferential surface of the mold body. It is characterized by.

  According to the molding die having the above configuration, the molded product is thermally contracted by heating the molding material that is externally fitted to the mold body in a state where the convex molding die is projected from the outer peripheral surface of the mold body. Thus, a molded product having a shape conforming to the mode of the mold body and the convex mold is obtained. In this state, the projections and depressions on the inner surface of the molded product and the projection molding die are in a fitted state, but the projection molding is configured so that it can protrude outward from the outer peripheral surface of the mold body. By burying (withdrawing) the mold in the mold main body, the fitting between the unevenness of the molded product and the convex mold is released, and the molded product can be released from the mold main body. Therefore, the molded product can be smoothly released without requiring a plurality of steps such as mold splitting.

  As one aspect of the present invention, it is provided with a cam body that is movably housed in the mold body, and a biasing means that biases the convex molding die into the mold body. A mold accommodating recess for accommodating the part molding die is formed, and the cam body includes an extrusion part that directly or indirectly abuts on the convex molding die in the mold accommodating concave part and pushes outward, and a convex molding die It is preferable that an allowable portion that allows movement into the mold accommodating recess is formed side by side in the movement direction. If it does in this way, it will be in the state which can extrude a convex part shaping | molding die outside from the outer peripheral surface of a type | mold main body in the position where the extrusion part of a cam body respond | corresponds to a convex part shaping | molding die. On the other hand, at the position corresponding to the convex mold, the allowable portion of the cam body is allowed to move to the inside of the mold main body, and is buried (withdrawn) in the mold main body by the urging force of the urging means. It becomes a state. That is, by moving the cam body, it is possible to change the positional relationship between the extrusion portion and the allowance portion with respect to the convex mold, and switch between a state where the molded product is molded and a state where the molded product is released. Can do.

  In this case, the cam body is formed in a stepped rod shape in which the extruded portion and the allowable portion set to have a smaller diameter than the extruded portion are aligned in the axial direction, and is substantially concentric with respect to the die body and in the axial direction. It is preferable that the interior is movably mounted. If it does in this way, arrangement | positioning of the extrusion part with respect to a convex mold and an allowance part can be switched only by moving a cam body to an axial center direction.

  And in order to form the convex part extended in the circumferential direction in the trunk | drum of a molded article, the said mold accommodation recessed part is formed so that it may extend in the circumferential direction of the outer peripheral surface of a type | mold main body, and the said convex part shaping | molding die is a mold accommodation recessed part. Interposed between the convex mold and the cam body and movable in a direction crossing the moving direction of the cam body. May be provided. If it does in this way, a convex part shaping | molding die can be made to protrude from the outer peripheral surface of a type | mold main body via an interposed body. In other words, since the interposition body is disposed between the convex mold and the cam body, when the pushing portion of the cam body is disposed corresponding to the interposition body, the convex section is formed via the interposition body. The mold is pushed outward from the outer peripheral surface of the mold body while extending in the circumferential direction. Thereby, the molded product in which the convex part according to the convex part shaping | molding die was formed in the trunk | drum can be shape | molded.

  On the other hand, when the allowable portion of the cam body is arranged corresponding to the interposed body, the movement of the interposed body is allowed, and the convex mold that has been pushed outward by the interposed body is caused by its contractive force. Retreat into the mold housing recess. Thereby, fitting with the unevenness | corrugation of a molded article and a convex part shaping | molding die is cancelled | released, and it will be in the state which can release a molded article.

  In this case, the mold accommodating recess may be formed in an annular shape, and the convex mold may be configured by an endless annular coil spring, and at least two of the interposed bodies may be disposed around the cam body. . In this way, by arranging a plurality of interposition bodies around the cam body, when the interposition bodies are pushed by the extruding part, the entire circumference of the coil spring as the convex mold is formed. The force pushing outward acts uniformly, and the coil spring can be protruded from the outer peripheral surface of the mold body with a uniform protrusion amount. In addition, in a state where the permissible portion corresponds to the arrangement of the interventional bodies, the movement of each interventional body is permitted all at once, and the contraction force of the coil spring formed in an endless ring acts on all the interventional bodies. The body is pushed into the mold body, and the coil spring (convex mold) is retracted into the mold body. Therefore, it is possible to accurately mold a molded product having an endless annular projection on the body, and to easily release the molded product.

  A mold release body configured to be able to come into contact with and separate from one end surface of the mold body in order to release the molded product in which the annular part bent from the one end of the body part to the center side of the one end surface of the mold body is formed. The cam body is disposed with the pushing portion positioned on the one end surface side of the mold body with respect to the allowance portion, and the release body is pressed against the cam body at a position where the allowance portion corresponds to the convex mold. And may be configured to be separated from the mold body. In this way, after releasing the fitting state between the convex mold and the irregularities of the molded product, the molded product is released from the mold body by pushing the annular part of the molded product outward in the axial direction with the mold release body. Can be made to float. Moreover, since the convex mold and the release body are actuated by one cam body, the convex mold and the mold can be actuated at an appropriate timing with a simple configuration.

  As another aspect of the present invention, it is possible to contact and separate from one end surface of the mold body in order to release the molded product in which the annular part bent from the one end of the body part toward the center side of the one end surface of the mold body is released. The mold release body may be provided, and the mold release body may be configured to be separated from the mold body in a state where the convex mold is buried in the mold body. In this way, after releasing the fitting state between the convex mold and the irregularities of the molded product, the annular portion of the molded product is outside in the axial direction when the mold release body is separated from the one end surface of the mold body. It is possible to release the entire molded product that is pressed into the mold main body and is in a fitted state.

  According to the mold according to the present invention, it is possible to mold a molded product in which irregularities are formed in a cylindrical body, and to smoothly release the molded product without going through a plurality of processes such as mold splitting. It is possible to achieve an excellent effect of being able to.

  Hereinafter, a mold according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  Such a molding die is for molding a molded product having irregularities in a cylindrical body from a molding material in which a resin sheet having heat shrinkability is formed into a cylindrical shape. In this embodiment, FIG. As shown in FIG. 2, the outer body (100) of the container 100 having a double structure with the container body 105 formed in a bottomed cylindrical shape to accommodate the food and drink F and the outer body 110 that covers the peripheral wall 106 of the container body 105. Molded product) 110 for molding.

  Prior to the description of the molding die, the container 100 including the outer package 110 molded by the molding die will be briefly described. The container body 105 is formed by molding a synthetic resin by a molding method such as injection molding or blow molding, or by synthesis. This is a resin molded product obtained by molding a resin sheet by a molding method such as vacuum molding or pressure molding. As a synthetic resin for forming the container body 105, for example, polyester such as polyethylene terephthalate (PET), polypropylene, polyethylene, polystyrene, or a foamed resin obtained by foaming these can be used. Further, as the sheet, a single layer sheet of the above synthetic resin or a laminated sheet with a resin having a gas barrier property or the like can be employed.

  In the container main body 105 according to the present embodiment, a flange portion 107 extending outward is provided at the upper end portion of the peripheral wall 106. The flange portion 107 includes an annular portion 107a that is connected to the upper end of the peripheral wall 106 to form an annular shape, and an extending portion 107b that extends from the outer peripheral edge of the annular portion 107a so as to face the peripheral wall 106. ing.

  The exterior body 110 is formed by heat-shrinking a material to be molded in which a printed resin sheet having heat shrinkability is formed into a cylindrical shape, and a cylindrical body portion that covers the peripheral wall 106 of the container body 105. (Hereinafter referred to as an exterior wall) 111 and an annular bottom 112 that is an annular portion extending inwardly from one end (lower end) of the exterior wall 111.

  On the exterior wall 111, a convex portion 113 protruding outward is formed, and an outer peripheral surface is formed to be uneven. In the present embodiment, the convex portions 113 are formed in an annular shape in the circumferential direction, and three are formed at intervals in the axial direction of the exterior wall 111. The annular bottom portion 112 includes an inclined portion 112a inclined from the lower end of the exterior wall 111 toward the inside of the exterior wall 111, and a horizontal annular shape extending substantially horizontally from the tip of the inclined portion 112a toward the axis of the exterior body 110. Part 112b.

  The molding material (resin sheet) for molding the exterior body 110 having the above configuration may be a single-layer resin sheet having heat shrinkability, but in the present embodiment, it is made of expanded polystyrene having heat shrinkability. A laminated sheet of a resin sheet (hereinafter referred to as a foamed resin sheet) and a PS (polystyrene) film (hereinafter referred to as a laminate film) is employed. The resin sheet has a foamed resin sheet thickness of 0.05 mm to 1.0 mm, preferably 0.2 mm to 0.5 mm, and a laminate film thickness of 0.01 mm to 0.1 mm. Preferably, it is set to 0.02 mm to 0.05 mm. The foamed resin sheet according to the present embodiment has a foaming ratio of 2 to 10 times (preferably 2.5 to 7 times), and is heat-shrinkable in one direction that becomes a circumferential direction when it is formed into a cylindrical shape. have. That is, the resin sheet is configured by laminating a foamed resin sheet and a laminate film having substantially the same heat shrinkability so that the heat shrink directions coincide with each other. The heat shrinkage rate of the resin sheet is preferably 30% or more at 120 ° C. In addition, since the resin sheet which concerns on this embodiment is formed in the rectangular shape, and it shape | molds by adhere | attaching the both ends of a longitudinal direction when shape | molding the exterior body 2, heat shrinkability is a cylindrical shape. It is set to the longitudinal direction which becomes the circumferential direction when

  In the present embodiment, in order to enhance the decorativeness of the container as a finished product, printing of product display, product information, etc. composed of characters, designs, etc. on the resin film laminate film that is the outer peripheral surface (surface) of the exterior body 110. Is given. That is, since the outer body 110 as a molded product has a different distance from the axial center to the outer peripheral surface at each position in the axial direction, there is a portion where the printing plate cannot be in close contact with the outer peripheral surface when printing directly on the outer body 110. Since it is possible and proper printing cannot be performed, printing is performed on the resin sheet before being molded into the exterior body 110. The printing on the laminate film may be either surface printing or back printing. However, in the case of performing the back printing, after printing on the laminated film in a single layer state, the printing surface and the foamed resin sheet The resin sheet may be formed by laminating the foamed resin sheet and the laminate film so as to face each other. Further, even in the case of surface printing, it is of course possible to form a resin sheet by laminating a foamed resin sheet and a laminate film after printing on a laminate film in a single layer state.

  The expanded polystyrene constituting the expanded resin sheet is mainly a polystyrene obtained by foaming general-purpose polystyrene with various foaming agents, or a copolymer obtained by copolymerizing butadiene, acrylonitrile, methacrylic acid, acrylic acid, acrylic esters, etc. with polystyrene. As the component, a product containing 50% by weight or more (preferably 70% or more) of the styrene component and foamed with various foaming agents can be employed. The foamed resin sheet is preferably made of foamed polystyrene because it is relatively rigid, but may be a polypropylene resin or the like. The laminate film may be various heat-shrinkable films such as expanded polystyrene (OPS), polyester resin, and polypropylene resin.

  In the container 100 having the above configuration, the other end portion (upper end portion) of the exterior body 110 (exterior wall 111) is fitted to the upper end portion of the peripheral wall 106 of the container body 105, so that the peripheral wall 106 of the container body 105 and the exterior body. A space is formed between 110 exterior walls 111. As a result, the container 100 has excellent heat insulation properties in which the temperature in the container main body 105 is not easily transmitted to the exterior wall 111. In addition, since the container 100 having the above configuration is formed of the exterior body 110 with a resin sheet including a foamed resin sheet, in addition to the heat insulation by the space between the container body 105 and the exterior body 110, the container 100 is thermally insulated with the foamed resin sheet. Sex is further enhanced.

  Next, a molding die for molding the exterior body 110 having the above configuration will be described. As shown in FIGS. 2 (a) and 2 (b), the molding die according to this embodiment has an outer peripheral surface formed in a substantially uniform continuous surface in a direction orthogonal to the circumferential direction (from one end to the other end). A mold main body 2 on which a cylindrical molding material A is externally fitted, and a convex molding die 3 which is built in the mold main body 2 and protrudes and protrudes from the outer peripheral surface of the mold main body 2 in a substantially radial direction. The mold 1 is movably mounted in the mold body 2, and a cam body 4 for projecting and projecting the convex mold 3, and an urging means for biasing the convex mold 3 toward the mold body 2. And 5. Further, the molding die 1 according to this embodiment includes a fixing means 6 for fixing the molding material A externally fitted to the molding body 2 in a fixed position, and a molding product 110 molded from the molding material A from the molding body 2. And a release means 7 for releasing the mold.

  The mold body 2 according to the present embodiment is tapered from the other end toward the one end, and is formed in a substantially truncated cone shape. On the outer peripheral surface of the mold body 2, a mold housing recess 20 for housing (interior) the convex mold 3 is formed. The mold 1 according to the present embodiment includes a mold body 2 for molding the above-described molded product (exterior body) 110 having a convex portion 113 (annular ridge) extending in the circumferential direction on a cylindrical exterior wall 111. The mold accommodating recess 20 is formed in an annular shape extending in the circumferential direction on the outer peripheral surface of the mold main body 2 so that the convex mold 3 can be accommodated over the entire circumference of the mold body 2.

  The mold accommodating recess 20 according to the present embodiment is formed to be slightly inclined with respect to the axis of the mold main body 2 and is formed in three strips at intervals in the axial direction. The mold accommodating recess 20 is formed so that the convex mold 3 can be completely accommodated so that the convex mold 3 in the accommodated (retracted) state does not protrude outward from the outer peripheral surface of the mold body 2. ing. In the mold body 2 according to the present embodiment, an interior space 21 in which the cam body 4 is housed is formed. The interior space 21 is formed from one end to the other end so as to substantially coincide with the axis of the mold body 2, and openings are formed on both end surfaces of the mold body 2. And, in order to make the cam body 4 in the interior space 21 act on the convex mold 3, there is a connecting hole 22 for interposing an intermediary body 8 (guide section 80) described later so as to be movable in the radial direction of the mold body 2. The mold accommodating recess 20 and the interior space 21 are formed to communicate with each other.

  The convex mold 3 is configured to be stretchable in the circumferential direction of the mold body 2. The convex mold 3 according to this embodiment employs a coil spring formed in an endless annular shape, and is fitted into the mold accommodating recess 20 over the entire circumference. By forming the convex mold 3 with a coil spring in this way, the convex mold 3 is adapted to apply a force to enter the mold accommodating concave 20 by its own elasticity (contraction force). . That is, the coil spring fitted in the mold accommodating recess 20 functions as a convex mold 3 that protrudes from the outer peripheral surface of the mold main body 2 in a state of being stretched in the circumferential direction, and itself (the convex mold 3). 2 also has a function as an urging means 5 for urging inward.

  In this embodiment, in order to cause the endless annular convex mold 3 to protrude from the outer peripheral surface of the mold body 2, the intermediate body 8 that causes the cam body 4 to act on the convex mold 3 is the convex mold 3. And the cam body 4. The intervention body 8 is inserted into the connection hole 22 and connected at one end to the cam body 4 (extruded portion 40 and allowance portion 41 described later) and the other end of the guide portion 80. And an abutting portion 81 that abuts against the convex mold 3. The guide portion 80 is formed in a pin shape, and is inserted into the connecting hole 22 so as to be movable in the axial direction. The guide portion 80 is set longer than the connecting hole 22, and one of the end portions protrudes from the connecting hole 22 into the mold accommodating recess 20 or the interior space 21. The guide portion 80 is rounded so that one end portion located on the interior space 21 side can slide relatively on the outer peripheral surface of the cam body 4 in the axial direction of the cam body 4. ing.

  The contact portion 81 is provided in the mold housing recess 20, and the other end of the guide portion 80 is connected in the mold housing recess 20. The contact portion 81 according to the present embodiment is formed so as to extend along the mold housing recess 20 in accordance with the shape of the mold housing recess 20, and the guide portion 80 is connected to the approximate center in the extending direction. Yes. In the present embodiment, since the convex mold 3 is constituted by a coil spring having an endless annular shape, the interposer 8 includes the convex mold as shown in FIGS. 3 (a) and 3 (b). A plurality of cam bodies 4 are arranged around the cam body 4 so that the cam body 4 can act over the entire circumference of the (coil spring) 3 (the push and the movement allowance can be transmitted). In the present embodiment, the four interposition bodies 8 are provided radially around the axis of the cam body 4, and the guide portions 80 of each interposition body 8 are spaced circumferentially with respect to the cam body 4. Make contact with each other.

  As described above, each of the interposers 8 is moved in the radial direction of the mold body 2 by moving the guide portion 80 along the connection hole 22. Since the urging force of the urging means 5) is always acting, one end portion of the guide portion 80 is always in contact with the cam body 4.

  Returning to FIG. 2 (b), the cam body 4 according to the present embodiment includes an extruding portion 40 for extruding the convex molding die 3 in the accommodated state inside the mold accommodating concave portion 20 and the convex molding die 3. And an allowance portion 41 that permits the movement of the first and second movements are formed side by side in the movement direction. The cam body 4 according to the present embodiment is accommodated in the interior space 21 of the mold body 2 so as to be movable in the axial center (hole center) direction, and the arrangement of the extrusion portion 40 and the allowance portion 41 with respect to the interposition body 8. Can be switched. In this embodiment, in order to operate the three convex molds 3 with a single cam body 4, three extrusion portions 40 and three allowance portions 41 are alternately formed.

  The pushing portion 40 is slidably contactable with the inner peripheral surface that defines the interior space 21 and is formed to have a larger diameter than the allowance portion 41, and a position corresponding to the interposition body 8 (convex portion molding die 3). Therefore, the intervening body 8 (guide part 80) which contacts is shifted outside. On the other hand, the allowance portion 41 is formed to have a smaller diameter than the large diameter portion, and allows the interposition body 8 to move toward the axial center at a position corresponding to the interposition body 8. That is, the cam body 4 according to the present embodiment is formed in a stepped rod shape in which the pushing portion 40 and the allowance portion 41 having a smaller diameter are aligned in the axial direction, and the other end side is set as one end side of the mold body 2. (The extrusion portion 40 is positioned at one end of the mold body 2 with respect to the allowance portion 41) and is inserted into the interior space 21 so as to be movable in the axial direction. As a result, as shown in FIG. 3 (a), in the state where the guide portion 80 and the extruding portion 40 are in contact (the extruding portion 40 and the interposition body 8 are in a corresponding positional relationship), The body 8 is pushed outward, and the convex mold 3 protrudes from the outer peripheral surface of the mold body 2 and is maintained in a state where it can resist the shrinkage force of the molding material A. On the other hand, as shown in FIG. 3B, the biasing means is in a state where the guide portion 80 and the allowance portion 41 are in contact (the allowance portion 41 and the interposition body 8 are in a corresponding positional relationship). Due to the urging force 5, the interposition body 8 shifts toward the center of the mold body 2 so that the convex mold 3 is buried in the mold body 2 (mold housing recess 20). That is, in a state where the allowance portion 41 is arranged corresponding to the convex portion molding die 3, the convex portion molding die 3 is retracted into the mold accommodating concave portion 20 by the urging force of itself (the urging means 5). ing.

  2 (a) and 2 (b), the cam body 4 according to the present embodiment is formed in a tapered shape between the pushing portion 40 and the allowance portion 41 in the moving direction. The sliding contact is made smooth so that the convex mold 3 can be pushed out and released smoothly.

  A guide bar 43 that moves the cam body 4 in the axial direction in cooperation with a guide rail 93 (see FIG. 4) described later is connected to one end of the cam body 4 according to the present embodiment substantially concentrically. . A ball mounting portion 45 to which a ball 44 rolling on the guide rail 93 is mounted is provided at the distal end portion of the guide bar 43, and a return spring S described later is received adjacent to the ball mounting portion 45. A spring receiving part 46 is provided. On the other hand, an insertion hole 47 into which a guide bar 71a (to be described later) of the mold release means 7 is inserted is formed in the other end surface of the cam body 4 along the axis.

  An annular (doughnut plate-like) base 25 in plan view is attached to the other end of the mold body 2 concentrically. The base 25 is set to have a larger diameter than the maximum diameter (outer diameter at one end) of the mold body 2. A guide cylinder 26 through which the guide bar 43 is inserted is attached to the base 25. The guide tube 26 is substantially concentric with the opening of the base 25, one end is fixed to the base 25, and a spring receiving portion 27 that receives the return spring S is formed at the other end. Thus, the guide bar 43 and the cam body 4 connected to the guide bar 43 and the cam body 4 connected to the other end side of the mold body 2 are urged by the return spring S interposed between the spring receiving portion 46 and the spring receiving portion 27. And the intermediate body 8 (convex molding die 3) is pushed out by the pressing portion 40 and maintained.

  The fixing means 6 includes a plurality of fixing claws 60 arranged around the mold body 2 so as to be movable in the radial direction of the mold body 2, and a spring body that presses the plurality of fixing claws 60 to the outer periphery of the mold body 2. 61.

  In the present embodiment, the fixed claws 60 are slidable in the radial direction with respect to the base 25. The spring body 61 has an endless annular shape and is provided so as to surround the plurality of fixed claws 60. As a result, the contraction force of the spring body 61 acts as a biasing force toward the center with respect to the fixed claws 60, and the material A can be sandwiched and fixed between the fixed claws 60 and the mold body 2. It is like that.

  The mold release means 7 pushes an annular portion (annular bottom 112 in the exterior body 110) bent from one end of the molded product toward the center of the mold body 2 in a direction away from the mold body 2 to release the exterior body 110. A mold release body 70 to be molded and a guide means 71 for bringing the mold release body 70 into and out of contact with the one end surface of the mold main body 2 substantially concentrically.

  The mold release body 70 according to the present embodiment is formed in a plate shape that is substantially the same shape as one end surface of the mold main body 2 in plan view, and the other surface (one surface is in contact with the one end surface of the mold main body 2). The outer surface is continuous with the outer peripheral surface of the mold body 2. Further, a substantially frustoconical concave portion 72 is formed on the other surface opposite to the one surface facing (contacting) the mold body 2. As a result, the mold release body 70 having the above-described structure functions as a mold for molding the molded product (the annular bottom 112 of the exterior body 110) in addition to the function of releasing the molded product 110 from the mold body 2. It has become.

  The guide means 71 includes a guide bar 71a formed in a rod shape, and a guide body 71b in which a guide hole 73 is formed so that the guide bar 71a can be guided in the axial direction. The guide bar 71a is connected to one surface of the release body 70 substantially concentrically. The guide body 71b is fixed to one surface of the mold main body 2 so that the hole centers of the guide hole 73 and the interior space 21 of the mold main body 2 coincide with each other. Thereby, the mold release body 70 connected to the guide bar 71a inserted into the guide hole 73 of the guide body 71b can be moved along the axis of the guide bar 71a (hole center of the interior space 21). Yes.

  In the guide means 71 according to this embodiment, a coil spring (not numbered) is interposed between the guide washer 71b and a retaining C washer (not numbered) attached to the tip of the guide bar 71a. In a normal state, the mold release body 70 comes into contact with one end surface of the mold body 2 by the bias of the coil spring.

  The guide bar 71a is in a state where a part of the front end side is inserted into an insertion hole 47 formed in the cam body 4 in the interior space 21, and the cam body 4 is one end of the mold body 2. In a state where the allowance portion 41 is in a position corresponding to the interposed body 8, that is, in a state where the convex mold 3 is retracted from the outer peripheral surface of the mold body 2 to the inside (the mold accommodating recess 20). The mold body 70 comes into contact with the inner portion defining the insertion hole 47 and is pushed by moving the cam body 4 in the same direction, so that the mold release body 70 is separated from one end surface of the mold body 2.

  As shown in FIG. 4, the molding die 1 according to the present embodiment is incorporated into a molding apparatus 9 configured to mold or release a molded product (exterior body) 110 from a molding material A. The molding apparatus 9 will be described. The molding apparatus 9 externally fits the molding material A to the molding die 1, and immediately matches the molding material A to the shape of the molding die 1 (the mold body 2 and the convex molding die 3). A molded part (not shown) to be molded into the molded product 110 (exterior body 110), a release part 90 for releasing the external body 110 molded by the molded part from the mold 1, a molded part and a release part 90 is provided with transfer means 91 for transferring the molding die 1 to and from 90. Further, in the molding apparatus 9 according to the present embodiment, a transport apparatus E that transports the outer package 110 released by the release section 90 is provided as an integral or separate body.

  The molding part has a mounting device (not shown) for mounting the molding material A by being fitted concentrically with the mold body 2 and a heating device (not shown) for heating the mounted molding material A. ).

  The release part 90 includes a guide rail 93 for retracting the convex mold 3 of the transferred mold 1 from the outer peripheral surface of the mold body 2 and separating the release body 70 from the mold body 2, and a mold body. In order to release the exterior body 110 from 2, auxiliary release means 94 for assisting release by the release means 7 is provided.

  The guide rail 93 is formed to extend in the transfer direction of the mold 1 and guides the cam body 4 by guiding the guide bar 43 (ball 44) of the mold 1 transferred from the upstream side (molding portion). A guide surface 95 that moves in the axial direction is formed so as to rise from the upstream side to the downstream side in the transfer direction of the mold 1. More specifically, the guide surface 95 is formed to extend in a direction substantially perpendicular to the axis of the mold 1, extends straight along the transfer direction of the mold 1, and is transferred from the upstream side. A first guide surface 95a on which the ball 44 of the coming mold 1 is transferred, and is formed continuously with the first guide surface 95a, and is inclined toward the passage region side of the mold 1 (die body 2) toward the downstream side in the transfer direction. The second guide surface 95b is formed continuously with the second guide surface 95b, and the third guide surface 95c is substantially parallel to the first guide surface 95a. In the second guide surface 95b, until the guide bar 43 of the mold 1 reaches the third guide surface 95c (in the middle of the second guide surface 95b), the allowable portion 41 corresponds to the interposer 8. The cam body 4 is pushed through the guide bar 43 until reaching the position, and the guide bar 43 and the cam body 4 are further pushed downstream from the middle position of the second guide surface 95b to gradually remove the release body 70 from the mold body 2. It is formed to be separated from each other. The third guide surface 95c is in a state where the guide bar 43 (ball 44) transferred from the second guide surface 95b is pushed to the mold body 2 side, and the mold release body 70 is at a substantially constant distance from the mold body 2. It is formed so as to remain spaced apart.

  The auxiliary mold release means 94 includes an air nozzle 96 that ejects compressed air, and the exterior body 110 is lifted from the mold body 2 by the compressed air from the air nozzle 96. More specifically, the air nozzle 96 according to the present embodiment is positioned at a position corresponding to the third guide surface 95c of the guide rail 93, that is, when the exterior body 110 is lifted by the release body 70 of the mold 1, or In a lifted state, it is provided so that compressed air can be blown from the oblique direction toward the one end side from the other end side to the exterior wall 111 of the exterior body 110. The auxiliary release means 94 (air nozzle 96) starts blowing compressed air before or simultaneously with the release of the release body 70 from the mold main body 2, and the released exterior body 110 is a holding device (to be described later) of the transfer device E. The compressed air is blown until it is sucked and held by E2 (suction holder E2b).

  The transfer means 91 includes an endless annular conveyor 97 that circulates, and the conveyor 97 is disposed so as to straddle the molding part and the release part 90. In the molding apparatus 9 according to the present embodiment, a plurality of the molding dies 1 are provided in order to continuously mass-produce the exterior body 110, and the respective molding dies 1 are fixed to the conveyor 97 at predetermined intervals in the circumferential direction. ing. In the present embodiment, the molding apparatus 9 takes into account the mounting of the molding material A at the molding section and the removal of the exterior body 110 at the mold release section 90. Located on the outside, the guide bar 43 is provided so as to protrude inside the conveyor 97. Therefore, the guide rail 93 is disposed inside the conveyor 97.

  The transport device E holds the belt conveyor E1 that transports the exterior body 110 to a predetermined position, and the exterior body 110 that has been released in the release part 90, and moves the exterior body 110 onto the belt conveyor E1. It is comprised with the holding | maintenance apparatus E2.

  The holding device E2 is provided with a rotary table E2a set with a rotation center at a substantially intermediate position between the belt conveyor E1 and the release part 90, and a circumferential interval with respect to the rotary table E2a. A plurality of suction holders E <b> 2 b that suck and hold the exterior body 110 by the release part 90 are provided. The rotary table E2a is provided so as to face one end surface (mold release body 70) of the mold main body 2 of the mold release portion 90 and the conveyance surface of the belt conveyor E1, and the suction holder E2b includes the exterior body 110. The annular bottom 112 can be held by suction. Then, the rotary table E2a rotates with the exterior body 110 sucked and held, and when the exterior body 110 reaches the belt conveyor E1, suction is stopped and the exterior body 110 is placed on the belt conveyor E1. It has become.

  Next, molding or mold release of the exterior body 110 will be described through a series of operations of the molding apparatus 9. First, in the molding part, as shown in FIG. 5 (a), the molding material A, which is a cylindrical resin sheet having heat shrinkability, is substantially concentric with the mold body 2 from which the convex molding die 3 protrudes from the outer peripheral surface. It is fitted so that And the opening edge part of the to-be-molded material A is pinched | interposed into the type | mold main body 2, and the fixed nail | claw 60 ..., and is fixed in the state positioned with respect to the shaping | molding die 1. FIG. In the present embodiment, in order to mold the exterior body 110 having the annular bottom 112, the molding material A has a length in the axial direction extending to the outside of the release body 70 ( What is set is longer than the total length of the mold body 2 and the release body 70 in the axial direction.

  When the molding material A is heated by the heating device, as shown in FIG. 5 (b), the molding material A contracts in the circumferential direction and becomes a shape corresponding to the mold body 2 and the convex molding die 3. The exterior wall 111 of the exterior body 110 (the exterior wall 111 in which the convex part 113 extended in the circumferential direction is formed) is formed. And the edge part of the to-be-molded material A extended outside the mold release body 70 falls down (bends) toward the center of the mold main body 2 due to thermal contraction, and exhibits a substantially horizontal annular shape.

  Thereafter, as shown in FIG. 5 (c), the convex mold X that can be fitted into the concave portion 72 formed on one surface of the release body 70, and the portion that forms the horizontal ring of the molding material A is in the concave portion 72. After the convex mold X is separated from the mold 1, an annular bottom 112 of the exterior body 110 is formed as shown in FIG.

  Then, the mold 1 is transported toward the release part 90 on the downstream side by the transfer means 91, and as shown in FIG. 6, the guide bar 43 (ball 44) is guided to the guide surface 95 (first guide surface) of the guide rail 93. 95a) and moves in the axial direction along the guide surface 95. When the guide bar 43 reaches the second guide surface 95b, the guide bar 43 moves in the axial direction according to the inclination of the second guide surface 95b, and the cam body 4 is pushed toward one end surface of the mold body 2. become. Then, the cam body 4 and the interposed body 8 (guide portion 80) move relative to each other in the axial direction of the mold body 2, and the interposed body 8 moves along the outer shape of the cam body 4 in the axial direction, that is, The interposed body 8 gradually moves into the mold main body 2 along the taper between the pushing portion 40 and the allowance portion 41. If it does so, the convex part shaping | molding die (coil spring) 3 (5) which protruded from the outer peripheral surface of the type | mold main body 2 until now by the contact of the extrusion part 40 and the intervention body 8 will be the mold accommodation recessed part 20 by self elasticity (contraction force). The fitting state between the concave portion formed on the inner surface of the exterior wall 111 of the exterior body 110 (the concave portion on the back surface side that becomes the convex portion on the outer peripheral surface) and the convex mold 3 is released. FIG. 6 shows the protruding state of the convex mold 3 from the outer peripheral surface of the mold body 2 when the mold 1 moves along the guide surface 95 of the guide rail 93 with the guide surface 95 of the guide rail 93. It is the figure which showed the relationship intermittently.

  When the guide bar 43 is further pushed to one end side of the mold body 2 in accordance with the inclination of the second guide surface 95b as the molding die 1 is transferred to the downstream side, the depth of the insertion hole 47 of the cam body 4 is increased. The guide bar 71a comes into contact with the guide bar 71a and is pushed in the same direction. That is, the release body 70 is separated from the mold body 2 in a state where the convex mold 3 is retracted from the outer peripheral surface of the mold body 2 to the inside. Then, the release body 70 pushes the annular bottom 112 of the exterior body 110 away from the mold body 2, and the exterior body 110 in which the exterior wall 111 is in close contact with the outer peripheral surface of the mold body 2 is separated from the mold body 2. Will be typed. At this time, as shown in FIG. 4, since the blowing of the compressed air from the auxiliary mold release means 94 (air nozzle 96) acts to lift the exterior body 110, only the mold release from the mold body 2 is performed. And acts to assist the release from the release body 70.

  Then, when the suction holder E2b sucks and holds the outer package 110 in the released state from the mold body 2, the outer package 110 rotated and held by the rotary table E2a is conveyed to the belt conveyor E1, and the outer package 110 is transferred. Is conveyed to a predetermined position by the belt conveyor E1. And since the shaping | molding apparatus 9 which concerns on this embodiment is equipped with multiple shaping | molding die 1, the above-mentioned process is performed also with respect to each exterior body (molded article) 110, and is mass-produced continuously.

  As described above, the molding die 1 according to the present embodiment is configured such that the convex molding die 3 can be projected and retracted outward from the outer peripheral surface of the mold body 2, so that the convex molding die 3 is placed outside the outer peripheral surface. Is retracted from the mold body 2 into the mold body 2 to release the fitting between the projections and depressions of the exterior body (molded product) 110 and the projection molding die 3, and the exterior body 110 and the mold body 2 are moved in the axial direction. Moreover, the outer package 110 can be smoothly released from the mold body 2 only by relatively moving in the separation direction. Therefore, when the outer package 110 is released from the mold main body 2, the outer package 110 can be released smoothly without going through complicated processes and operations such as mold division.

  In addition, an extruding portion 40 that pushes the convex mold 3 in the mold accommodating recess 20 outward and an allowance portion 41 that allows the convex mold 3 to move into the mold accommodating concave 20 are formed side by side in the movement direction. Since the cam body 4 and the urging means 5 that urges the convex mold 3 toward the mold main body 2 are provided, the cam body 4 is moved so that the convex mold 3 is pushed out. The positional relationship between the portion 40 and the allowance portion 41 can be changed, and the state can be switched between a state in which the exterior body 110 is molded and a state in which the exterior body 110 is released.

  In particular, the cam body 4 is formed in a stepped rod shape in which the extruded portion 40 and the allowance portion 41 are arranged in the axial direction, and the cam body 4 can be moved in the axial direction. The allowing portion 41 can be switched to a position corresponding to the arrangement of the convex mold 3.

  And since the mold accommodation recessed part 20 was formed in the outer peripheral surface of the type | mold main body 2 so that the circumferential direction might be extended, and the convex part shaping | molding die 3 was comprised with the coil spring inserted along the mold accommodation recessed part 20, it is a convex part shaping | molding die. 3 and the urging means 5 can be combined. In addition, the convex mold 3 can be made to function. Further, between the convex mold 3 and the cam body 4, an interposition body 8 is provided that moves in a direction intersecting with the moving direction of the cam body 4 along the pushing portion 40 and the allowance portion 41 of the cam body 4. Since it did in this way, the effect | action of the cam body 4 can be made to act on the convex part shaping | molding die 3. FIG.

  And since the some interposition body 8 was arrange | positioned around the cam body 4, even if it comprises the convex part shaping | molding die 3 in an endless cyclic | annular form, with respect to this convex part shaping | molding die 3, it goes over the perimeter. The force pushed outward can be applied uniformly, and the convex mold 3 can be projected from the outer peripheral surface of the mold body 2 with a uniform amount of protrusion. Further, since the convex mold 3 is constituted by a coil spring, the convex mold 3 itself can function as the urging means 5, and as described above, even if the convex mold 3 is formed into an endless ring, The mold main body 2 (the mold housing recess 20) can be reliably retracted. Therefore, it is possible to accurately mold a molded product in which the convex portion 113 having an endless annular shape is formed on the exterior wall 111 and to release the exterior body 110 easily and reliably.

  And since the mold release body 70 comprised so that contact / separation was possible was provided in the end surface of the type | mold main body 2, the molded article 110 in which the annular bottom part 112 was formed can be reliably released from the type | mold main body 2. FIG. .

  In particular, since the cam body 4 pushes the release body 70 away from the mold body 2 at a position where the allowable portion 41 corresponds to the convex mold 3, the simple structure of the convex mold 3 can be used. The appearance and the release of the molded product by the release body 70 can be performed at an appropriate timing.

  Further, since the cam body 4 having the above function is operated by the cooperation of the guide bar 43 and the guide rail 93, the protrusion and depression of the convex mold 3 is switched at an appropriate timing while the mold 1 is moved. be able to. Therefore, even if it is a case where the some shaping | molding die 1 is transferred one by one like the said shaping | molding apparatus 9, the convex part shaping | molding die 3 is made to appear and retract at an appropriate timing, respectively, without making it a complicated structure. be able to.

  In addition, the shaping | molding die of this invention is not limited to above-described embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

  In the above embodiment, the plurality of molding dies 1 are incorporated in the molding apparatus 9, but the present invention is not limited to this. For example, the molding product may be molded using the molding die 1 alone. Even in this case, the outer body 110 can be molded or released easily and reliably by allowing the convex mold 3 to protrude outward from the outer peripheral surface of the mold body 2.

  In the above embodiment, the resin molded product is used for the container body 105 combined with the exterior body 110 which is a molded product formed by the mold 1, but the container body 105 used for the double-structured container 100 is limited to this. Of course, for example, the container 100 may be configured by combining the container body 105 and the exterior body 110 formed from various materials such as glass, metal, and paper.

  In the above embodiment, the cam body 4 and the urging means 5 are provided so that the convex mold 3 can be projected and retracted from the outer peripheral surface of the mold body 2, but the convex mold 3 is projected and retracted from the mold main body 2. The means is not limited to this, and for example, a link mechanism may be provided in the mold body 2 and the convex mold 3 may be caused to protrude from the outer peripheral surface of the mold body 2 by the operation of the link mechanism. . Moreover, in the said embodiment, the interposition body 8 was interposed between the convex part shaping | molding die 3 and the cam body 4, and the operation | movement of the cam body 4 was made to act on the convex part shaping | molding die 3 indirectly, For example, the operation of the cam body 4 may be directly applied to the convex mold 3.

  In the above embodiment, the convex portion 113 extending in the entire circumferential direction is formed on the exterior wall 111 of the exterior body 110, but the molded product molded by the molding die 1 is not limited to this. That is, when molding a molded product having a spiral convex portion 113 around the exterior wall 111, the mold housing recess 20 extending spirally is formed on the outer periphery of the mold body 2, and along the mold housing recess 20. What is necessary is just to accommodate the elongate coil spring 3 (5). Similarly to the above embodiment, when the coil spring 3 (5) is pushed out by the cam body 4 or the like, the coil spring functions as the convex mold 3, and the spiral convex 113 is formed from the molding material A to the exterior wall. 111 is formed into the molding die 1 for molding the exterior body 110, and the extrusion by the cam body 4 is released, and the coil spring 3 (5) is retracted into the mold housing recess 20 by its own elasticity, thereby forming the convex molding die ( The fitting between the coil spring 3 (5)) and the convex portion 113 of the exterior body 110 is released, and the exterior body 110 can be released.

  In the above-described embodiment, the endless annular coil spring is used for the convex mold 3. However, the present invention is not limited to this. For example, the convex mold 3 is configured by a rubber ring body that can be expanded and contracted. It may be. Even if it does in this way, since it can expand-contract in the circumferential direction similarly to the coil spring, it can protrude from the outer peripheral surface of the mold body 2. The convex mold 3 is not limited to a circular cross section, and has various cross sectional shapes corresponding to the shape of the convex part of the molded product to be molded (for example, a square cross section, It is possible to employ a polygonal cross section.

  Furthermore, the convex mold 3 may be formed of an endless annular rubber tube, and gas may be injected and discharged from the tube. In this way, in a state where air is injected into the tube, the tube swells and protrudes from the outer peripheral surface of the mold body 2, and in a state where air is discharged from the tube, the tube is squeezed and retracted into the mold body 2 Therefore, similarly to the above-described embodiment, it is possible to switch between a state where the molded product is molded and a state where the molded product is released.

  In the above embodiment, the convex mold 3 is completely accommodated in a state where the convex mold 3 is retracted into the mold accommodating recess 20 (mold body 2), but the present invention is not limited thereto. However, if the fitting state between the concave portion on the inner surface of the molded product 110 and the convex mold 3 is released and the molded product 110 can be released from the molding die 1. A part may protrude from the outer peripheral surface of the mold body 2 in a state of being retracted into the housing recess 20 (the mold body 2).

  Further, when molding the exterior body 110 having a convex portion on a part of the exterior wall 111, the mold housing recess 20 that accommodates the convex mold corresponding to the convex portion formed on the exterior wall 111 is formed on the outer peripheral surface of the mold body 2. The convex molding die 3 formed in the above and accommodated in the mold accommodating concave portion 20 may be caused to appear and disappear via the cam body 4 or a link mechanism. Even if it does in this way, the exterior body 110 can be smoothly mold-released by making the convex-shaped shaping | molding die 3 protrude from the outer peripheral surface of the type | mold main body 2. FIG.

  In the above embodiment, the cam body 4 is formed in the shape of a stepped rod, and the pushing portion 40 and the allowance portion 41 are formed side by side in the axial direction. However, the present invention is not limited to this. 4 may be provided in the mold body 2 so as to be rotatable around the axis, and the pushing portion 40 and the allowance portion 41 may be formed side by side in the rotational direction of the cam body 4. That is, if the pushing portion 40 and the allowing portion 41 having different rotation radii are formed side by side in the rotation direction, the pushing portion 40 directly or indirectly pushes the convex mold 3 by rotating the cam body 4. Then, the permissible portion 41 can be switched to a position corresponding to the arrangement of the convex mold 3, allowing the convex mold 3 to move, and retracting into the mold body 2.

  Moreover, in the said embodiment, although the guide part 80 was always in the state which contacted the outer surface of the cam body 4 (the extrusion part 40 and the allowance part 41), it is not limited to this, For example, intervention The guide part 80 may be brought into contact with the extrusion part 40 only when the convex part molding die 3 is pushed out from the outer peripheral surface of the mold body 2 by the body 8. Further, the cam body 4 is not limited to the one in which the movement in the axial direction is guided by slidingly contacting the inner peripheral surface of the interior space 21, and various kinds of cam bodies 4 can be guided in the axial direction. Changes are possible.

  In the above embodiment, the outer shape of the mold body 2 is formed in a substantially truncated cone shape. However, the present invention is not limited to this. For example, the outer shape of the die body 2 may be formed in a substantially rectangular truncated cone shape having a substantially rectangular cross section. Good. That is, the mold main body 2 is configured such that the mold 1 and the mold main body 2 can be relatively spaced apart in the axial direction when the molded product 110 is released in a state where the convex mold 3 is retracted. The outer peripheral surface should just be formed in the continuous surface uniform in the orthogonal direction with the circumferential direction.

  In the said embodiment, although the shaping | molding die 1 which shape | molds the exterior body 110 of the container 100 which makes | forms a double structure was demonstrated, the molded article shape | molded with the shaping | molding die 1 is the exterior body 110 employ | adopted as the container 100 of the said structure. For example, the present invention can be applied to the case where the container 100 is molded. That is, a molded product similar to the exterior body 110 may be molded with the molding die 1, and the opening of the annular bottom 112 may be closed with a sheet material to form the container 100. In addition, the molding material A having a length set so as to extend outward from the mold release body 70 when it is externally fitted to the molding die 1 (mold body 2), is extended from one end of the exterior wall 111. However, the present invention is not limited to this, and the molding material A having a length substantially the same as the axial direction of the mold body 2 is adopted, and a cylindrical exterior wall (body body) is formed. Part) 111 and convex part 113 may be formed. However, as in the above-described embodiment, in order to release the molded product 110 smoothly and reliably from the mold 1, it is possible to form the annular bottom 112 and push it up with the mold release body 70 to release it. preferable.

  In the above embodiment, a coil spring is employed in the convex mold 3 to form the endless annular convex 113 on the exterior wall 110, and an urging force is applied to retract the convex mold 3 into the mold housing concave 20. However, the present invention is not limited to this, and the biasing means such as a spring is provided separately from the convex mold 3 and is projected by the biasing force of the biasing means. Of course, the part mold 3 may be retracted into the mold body 2.

  In the above embodiment, the release means 7 (release body 70) for releasing the exterior body 110 from the mold body 2 is separated from the one end surface of the mold body 2 by the cam body 4. However, the present invention is not limited to this. Of course, means for separating the mold release body 70 from the mold main body 2 may be provided separately and independently in the mold main body 2. Moreover, the shaping | molding die 1 does not necessarily need to be provided with the mold release body 70, and should just be provided as needed. However, it goes without saying that the release body 70 is preferably provided when a molded product having the annular bottom portion (annular portion) 112 is molded as in the above embodiment.

It is a figure which shows the container provided with the exterior body shape | molded with the shaping | molding die concerning one Embodiment of this invention, Comprising: The front view containing a partial cross section is shown. It is a figure which shows the shaping | molding die concerning the embodiment, Comprising: (a) shows a front view, (b) shows front sectional drawing. It is sectional drawing (II sectional drawing of (a) of FIG. 2) of the shaping | molding die concerning the embodiment, (a) shows the state which the convex part shaping | molding die protruded from the outer peripheral surface of the type | mold main body, (B) shows a state in which the convex mold is retracted into the mold main body (within the mold housing recess). The fragmentary schematic diagram of the shaping | molding apparatus equipped with the shaping | molding die concerning the embodiment is shown. It is explanatory drawing at the time of shape | molding an exterior body with the shaping | molding die (molding apparatus) which concerns on the embodiment, (a) shows the state which fitted the to-be-molded material to the type | mold main body, (b) A state in which the molding material is heated and thermally contracted is shown, (C) shows a state in which the annular bottom portion is molded with a convex mold, and (D) shows a state in which the molding material is molded into the exterior body. The situation figure at the time of releasing an exterior body from the shaping | molding die (molding apparatus) which concerns on the embodiment is shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Molding die, 2 ... Mold main body, 3 ... Coil spring (convex part shaping | molding die), 4 ... Cam body, 5 ... Coil spring (biasing means), 6 ... Fixing means, 7 ... Release means, 8 ... Interposition body DESCRIPTION OF SYMBOLS, 9 ... Molding apparatus, 20 ... Mold accommodation recessed part, 21 ... Interior space, 22 ... Connection hole, 25 ... Base, 26 ... Guide pipe | tube, 27 ... Spring receiving part, 40 ... Extrusion part, 41 ... Permissible part, 43 ... Guide Bar, 44 ... ball, 45 ... ball mounting portion, 46 ... spring receiving portion, 47 ... insertion hole, 60 ... fixing claw, 61 ... spring body, 70 ... release body, 71 ... guide means, 71a ... guide bar, 71b ... guide body 72 ... recessed portion 73 ... guide hole 80 ... guide portion 81 ... contact portion 90 ... release portion 91 ... transfer means 93 ... guide rail 94 ... auxiliary release means 95 ... Guide surface, 95a ... first guide surface, 95b ... second guide surface, 95c ... third guide surface, 96 ... air nozzle, 97 ... Conveyor, 100 ... container, 105 ... container main body, 106 ... peripheral wall, 107 ... flange part, 107b ... extension part, 107a ... annular part, 110 ... exterior body (molded article), 111 ... exterior wall (body part), DESCRIPTION OF SYMBOLS 112 ... Annular bottom part (annular part), 112a ... Inclined part, 112b ... Horizontal annular part, 113 ... Convex part, A ... Molding material, E ... Conveyor, E1 ... Belt conveyor, E2 ... Holding device, E2a ... Rotary table , E2b ... suction holder, S ... return spring

Claims (7)

  A molding die for molding a molded product having irregularities in a cylindrical body from a molding material in which a resin sheet having heat shrinkage is formed into a cylindrical shape, and the outer peripheral surface is uniform in the direction orthogonal to the circumferential direction A molding die comprising: a mold main body formed on a continuous surface and fitted with a material to be molded; and a convex molding die that is embedded in the mold main body and protrudes and protrudes from an outer peripheral surface of the mold main body.   A cam body that is movably mounted in the mold body and a biasing means that biases the convex molding die into the mold main body, and the convex molding mold is accommodated on the outer peripheral surface of the mold main body. A mold accommodating recess is formed, and the cam body is directly or indirectly brought into contact with the convex mold in the mold accommodating concave and pushed outward, and the convex mold is moved into the mold accommodating concave. The molding die according to claim 1, wherein an allowance portion that allows for squeezing is formed side by side in the movement direction.   The cam body is formed in a stepped rod shape in which an extruded portion and an allowable portion set to have a smaller diameter than the extruded portion are aligned in the axial direction, and is substantially concentric with the mold body and movable in the axial direction. The molding die according to claim 2, which is housed inside.   In order to form a convex portion extending in the circumferential direction on the body portion of the molded product, the mold receiving recess is formed to extend in the circumferential direction of the outer peripheral surface of the mold main body, and the convex mold is formed along the mold receiving recess. And an interposer that is movable in the direction intersecting the moving direction of the cam body is provided between the convex mold and the cam body. The mold according to claim 3.   5. The mold receiving recess is formed in an annular shape, the convex mold is formed by a coil spring having an endless annular shape, and at least two of the interposition bodies are disposed around the cam body. Mold.   In order to release the molded product in which the annular part bent from the one end of the body part toward the center side of the one end surface of the mold body is released from the mold body, the mold body is provided so as to be able to contact and separate from one end surface of the mold body. The cam body is disposed with the pushing portion positioned on the one end surface side of the mold body with respect to the allowance portion, and the mold release body is pushed by the cam body at a position where the allowance portion corresponds to the convex mold. The mold according to any one of claims 3 to 5, wherein the mold is configured to be separated from the mold body.   In order to release the molded product in which the annular part bent from the one end of the body part toward the center side of the one end surface of the mold body is released from the mold body, the mold body is provided so as to be able to contact and separate from one end surface of the mold body. The mold according to any one of claims 1 to 5, wherein the release body is configured to be separated from the mold body in a state in which the convex mold is buried in the mold body.

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