JP5912991B2 - Mold - Google Patents

Description

  The present invention includes a set of molds for forming a molding space filled with a foamable synthetic resin, and a predetermined surface is formed on the surface of a foamed molded body obtained by thermoforming the foamable synthetic resin in the molding space. The present invention relates to a mold in which a plate material for forming information is attached to at least one mold.

  Conventionally, for example, predetermined information such as information related to a foam molded body is formed on the surface of the foam molded body molded by the above-described mold when the foam molded body is molded. In order to form the information, a metal plate material called a name plate is attached to the surface of the molding die on which information is to be molded out of a set of molding dies for molding the foam molded product, and the foam molded product is molded. I do. At the time of molding, information on the foam molded body can be displayed on the surface of the foam molded body by a plate material (see, for example, Patent Document 1).

JP 2010-167686A (see FIGS. 3 and 4)

  According to the configuration of Patent Document 1, when a plate material is attached to the surface of the mold, the thickness of the mold increases by the thickness of the plate material, and the thermal conductivity of the thickened portion deteriorates. . Moreover, since the part of the board | plate material of the shape | molded foaming molding is dented only by board thickness, the intensity | strength of the foaming molding of the part may fall, and there was room for improvement. In particular, the inconvenience becomes more pronounced as the size of the plate increases.

  The object of the present invention has been made in view of the above-mentioned problems. Even if a plate material is attached, a mold that suppresses deterioration of the thermal conductivity and suppresses a decrease in strength of the foam molded body. Is to provide.

A mold according to the present invention includes a set of molds for forming a molding space filled with a foamable synthetic resin, and is a foamed molded body obtained by thermoforming the foamable synthetic resin in the molding space. A mold having a plate member having a forming part for forming predetermined information on the surface and a non-forming part not forming the information attached to at least one mold,
The at least one mold includes an accommodating portion for accommodating the plate material, and the depth of the accommodating portion is substantially flush with the molding surface of the at least one molding die and the surface of the non-formed portion of the plate material. The depth is set, and a protruding portion that protrudes toward the molding space from the surface of the non-forming portion of the plate material is provided over a predetermined range in the forming portion of the plate material, and a recess is provided in the protruding portion. In the foamed molded article to be molded, a concave portion over a predetermined range is formed so as to correspond to the protruding portion, and a convex portion corresponding to the concave portion is formed from the surface of the concave portion to form the information, The protrusions are characterized in that the corners of the projecting end side outer peripheral edge are formed in a rounded shape .

According to the configuration of the present invention, by accommodating the plate material in the accommodating portion of the molding die, the molding surface of the molding die and the surface of the non-forming portion of the plate material are substantially flush with each other. It will not be thicker than that. Thereby, it can suppress that the heat conductivity of a shaping | molding die deteriorates. Moreover, since the molded foam molded body is not recessed by the thickness of the plate, it is possible to suppress the strength of the foam molded body at that portion from being lowered.
Moreover, while providing the protrusion part which protrudes in the shaping | molding space side rather than the surface of the non-formation part of a board | plate material over a predetermined range, by providing a recessed part in a protrusion part, it respond | corresponds to a protrusion part to the foaming molding to be shape | molded. A concave portion over a predetermined range is formed, and a convex portion corresponding to the concave portion is formed from the surface of the concave portion to form information. Examples of the predetermined information include the name of the organization that is the owner of the foamed molded product, items related to the return of the foamed molded product, the material name of the foamed molded product, and the purpose of use of the foamed molded product. By forming the concave portion, the convex portion protruding from the surface of the concave portion does not protrude outward from the surface of the foamed molded product, or the amount of protrusion can be reduced. Accordingly, it is easy to suppress crushing due to contact with other objects.

Moreover, the metal mold | die which concerns on this invention may be the structure by which multiple said recessed parts are formed in the foaming molded object shape | molded by providing multiple said protrusion parts in the formation part of the said board | plate material .

  According to the mold of the present invention, since the plate material is accommodated in the accommodating portion of the mold, the molding surface of the mold is substantially flush with the surface of the non-formed portion of the plate material. In addition, it is possible to provide a mold that suppresses deterioration of the thermal conductivity and suppresses a decrease in the strength of the foamed molded body.

The metal mold | die of this invention is shown, (a) is the vertical section side view, (b) is the sectional view on the AA line in (a). It is the front view which looked at the board | plate material shown in FIG.1 (b) from the front. It is a side view of the cold storage container formed of the metal mold | die with which the board | plate material shown in FIG. 2 was attached. It is a top view of the cold storage container. The BB sectional drawing in the cold storage container of FIG. 3 is shown on the right side, It is sectional drawing of the metal mold | die corresponding to this.

  Hereinafter, the metal mold | die of this invention is demonstrated based on drawing.

  FIGS. 1A and 1B show a mold apparatus 1 for forming a foam molded article. The mold apparatus 1 includes a pair of left and right molds 1A and 1B, and is configured to form a foam molded body by combining the pair of molds 1A and 1B on the front side. A mold apparatus 1 shown in FIGS. 1A and 1B is a horizontal mold apparatus that opens and closes a pair of molds 1A and 1B in the left-right direction (horizontal direction).

  One mold 1 </ b> A includes a female mold 2, a first frame 4 to which the mold 2 is attached, and a first back plate 5 that closes an opening 4 </ b> K on the back side of the first frame 4. . The other mold 1B includes a male mold 3, a second frame 7 to which the mold 3 is attached, and a second back plate 8 that closes an opening 7K on the back side of the second frame 7. ing.

  The female mold 2 includes a main body 2A having a recess having one end (the right end in FIG. 1 (a)) opened, and an annular ridge projecting radially outward from the open end of the main body 2A. Part 2B. Further, the male mold 3 is a convex part for forming a molding space S for entering the concave part of the female mold 2 and filling the foamable synthetic resin (foamable synthetic resin particles are preferred). And a ring-shaped flange portion 3B protruding outward in the circumferential direction from an end opposite to the protruding side of the main body portion 3A.

  The first frame 4 is formed in an annular frame body having a rectangular shape (rectangular shape) when viewed from the front, and is disposed on the back side of the mold 2 to support the outer peripheral edge of the flange portion 2B of the mold 2. . The first back plate 5 is made of a rectangular (rectangular) plate-like material, and is attached to the back surface of the first frame 4 so as to close the opening 4 </ b> K on the back surface side of the first frame 4. Thus, the steam chamber 6 of one mold 2 is formed by surrounding the back surface of the mold 2 by the first frame 4 and the first back plate 5.

  Similarly to the first frame 4, the second frame 7 is formed in an annular frame body having a rectangular shape (rectangular shape) when viewed from the front, and is disposed on the back side of the mold 3. The outer peripheral edge of the part 3B is supported. The second back plate 8 is made of a rectangular (rectangular) plate-like material, and is attached to the back surface of the second frame 7 so as to close the opening 7 </ b> K on the back surface side of the second frame 7. Thus, the steam chamber 9 of the other mold 3 is formed by surrounding the back surface of the mold 3 by the second frame 7 and the second back plate 8.

  Further, the first frame 4 connects the upper side wall portion 4A and the lower side wall portion 4B, which are disposed in parallel in the vertical direction, to the same end of the upper side wall portion 4A and the lower side wall portion 4B. For this purpose, it is provided with vertical left and right wall portions 4C and 4C (only one wall portion is shown in FIG. 1A) arranged in parallel to the left and right. A large number of through holes (not shown) are formed in the upper wall portion 4A, steam pipes (not shown) for supplying steam to the steam chamber 6 and steam chambers 6 after supplying steam to these through holes. A cooling water pipe (not shown) for supplying cooling water to is connected.

  Furthermore, the second frame 7 is similar to the first frame 4 in that the upper wall portion 7A and the lower wall portion 7B arranged above and below the upper wall portion 7A and the lower wall portion 7B. In order to connect the same ends, vertical left and right wall portions 7C and 7C (only one wall portion is shown in FIG. 1A) arranged in parallel to the left and right are provided. A plurality of through holes (not shown) for supplying steam to the steam chamber 9 are formed in the upper wall portion 7A as in the first frame 4, and the steam of the mold 3 is formed in these through holes. A steam pipe (not shown) for supplying steam to the chamber 9 and a cooling water pipe (not shown) for supplying cooling water to the steam chamber 6 after steam supply are connected.

  The female mold 2 is configured as a fixed mold fixed to a fixing portion (not shown), and the male mold 3 is configured as a movable mold that can move in the horizontal direction, and the female mold 2 The molding position (see FIG. 1 (a)) in which the male mold 3 is moved closer to the male mold 3 is separated from the female mold 2 after molding, and the foam molded body ( The position can be changed to an extraction position (not shown) for taking out the container body 10) shown in FIG.

  As shown in FIG. 1B, the main body 2A of the female mold 2 on the fixed side includes a rectangular wall portion 2A1 located on the rear side, and four extending from the four sides of the wall portion 2A1 to the front side. Side wall portions 2B1, 2C1, 2D1, and 2E1 are provided.

  The main body 3A of the movable-side male mold 3 is formed to be slightly smaller than the main body 2A of the female mold 2, and its size is set by the thickness of the container body 10 to be molded. . Further, as shown in FIG. 1B, the main body portion 3A includes a rectangular wall portion 3A1 positioned on the front side, and four side wall portions 3B1, 3C1, 3D1, extending rearward from the four sides of the wall portion 3A1. A main body 311 is constituted by 3E1.

  A concave portion 2d as a housing portion for housing a metal-made rectangular plate material 11 is formed inside the side wall portion 2D1 of one of the main body portions 2A of the female mold 2 on the fixed side (left side in FIG. 1B). Has been. The recess 2D is formed in a vertically long rectangular shape having a size slightly larger than that of the plate material 11 so that the plate material 11 can enter. The depth of the concave portion 2d is set to a depth at which the molding surface 2H of the mold 2 and the surface 11b of the non-formed portion 11B of the plate 11 are flush with each other (substantially flush with each other).

  The plate member 11 is provided with a forming portion 11A for forming predetermined information on the surface of the container body 10 which is a foam molded body to be formed, and a non-forming portion 11B that does not form the information. Therefore, when the container body 10 is formed by the forming dies 2 and 3 to which the plate material 11 is attached, predetermined information is formed on the surface of the container body 10 as shown in FIG. The predetermined information includes the name of the organization that is the owner (administrator) of the foam molded body, the notes when returning the foam molded body and returning the foam molded body, or the material name of the foam molded body, and foam molding. The purpose of use of the body is listed. Further, as shown in the enlarged view of FIG. 1B and FIG. 2, the plate member 11 is fixed to the side wall 2D1 using a plurality of (eight in FIG. 2) screws 12. Here, the screws 12 are used as a fixing means for fixing the plate member 11 to the side wall 2D1, but a fixing means such as an adhesive, welding or locking may be used.

  As shown in FIG. 2, the forming portion 11 </ b> A is provided at three locations 13, 14, and 15 in the vertical direction of the plate material 11. Portions other than these three portions are non-formed portions 11B.

  The formation part 11A located at the uppermost part extends over the predetermined range (within the predetermined range surrounded by the ellipse in FIG. 2) from the surface 11b of the non-formation part 11B of the plate 11 to the molding space S side. Is provided). The protrusion 13A is formed with a recess 13B in which an alphabet C-shaped mirror image character (also referred to as a mirror character) is formed. Three mirror image characters 13C are also formed on the left side of the recess 13B, but the mirror image characters themselves are omitted and indicated by ◯. By providing the protruding portion 13A in this way, as shown in FIGS. 3 and 5, the container body 10 to be molded is formed with a concave portion 101A over a predetermined range corresponding to the protruding portion 13A and the concave portion. A convex portion 101B that draws a C-shaped character in the vertical direction from the surface of 101A is formed. Characters corresponding to the mirror image character 13C indicated by the circles are indicated by three circles 101C on the right side of the convex portion 101B as shown in FIG.

  The forming portion 11A located at the middle in the vertical direction has a large number of convex portions 14A that protrude toward the molding space S side from the surface 11b of the non-forming portion 11B of the plate 11 (see the enlarged view of FIG. 1B and FIG. 2). It has. This convex part 14A is formed in the convex part which forms the mirror image character (it is also called a mirror character) of the character of a bird. By forming this convex portion 14A, as shown in FIG. 3, a concave portion 102A for forming a bird character corresponding to the convex portion 14A is formed in the container body 10 to be molded. Four mirror image characters 14B are also formed on the left side of the convex portion 14A, but the mirror image characters themselves are omitted and indicated by ◯. Thus, by providing the convex part 14A, as shown in FIG.3 and FIG.5, the recessed part 102A for drawing a bird character is formed in the container main body 10 shape | molded. Characters corresponding to the mirror image character 14A indicated by the circles are indicated by four circles 102B on the right side of the recess 102A as shown in FIG.

  The formation portion 11A located at the bottom is formed in the same manner as the formation portion 11A located at the top, and the protrusion 15A has a rectangular shape, and the recesses 15B and 15C formed in two steps above and below the protrusion 15A. Since the other configurations are the same, description thereof will be omitted. In FIG. 3, a concave portion 103A corresponding to the protruding portion 15A is formed, and convex portions 103B and 103C corresponding to the concave portions 15B and 15C (in FIG. 3, a total of 26 characters of 13 characters each in the vertical direction) are formed. In the enlarged view of the cross-sectional view of the mold 2 in FIG. 1B, the outer peripheral edges of the projecting ends of the projecting portions 13A, 14A, and 15A have a square shape. As shown in the cross-sectional view of the mold 2, the corners of the outer peripheral edges of the projecting ends of the projecting portions 13A, 14A, and 15A are rounded. In this way, the formed characters are prevented from being lost.

  A cold insulating container 100 formed by the molds 1A and 1B having the above-described configuration is shown in FIGS. The cold storage container 100 is detachably attached to the container body 10 so as to open and close the opening 10A of the container body 10 and a box-shaped container body 10 made of foamed synthetic resin having an opening 10A at the upper end. And an upper lid 16 made of foamed synthetic resin. The foamed synthetic resin is not particularly limited, and various foamed synthetic resins such as foamed polystyrene, foamed polyethylene, and foamed polypropylene can be used. In the cold storage container 100, refrigerated food or frozen food is accommodated together with a cold storage material or dry ice, or fish is accommodated together with a cold storage material or ice. In the following description, the short side direction of the cold container 100 is the left-right direction, and the long side direction of the cold container 100 is the front-back direction.

  The container body 10 includes a bottom wall 30 and a body side wall 31. The bottom wall 30 is formed in a flat plate shape that is substantially rectangular in plan view. Further, the back surface (lower surface) 30B of the bottom wall 30 includes an outer portion 30a located on the outer peripheral portion, and an inner portion 30b that is surrounded by the outer portion 30a and protrudes downward from the outer portion 30a. Both the outer portion 30a and the inner portion 30b are flat surfaces parallel to the surface 30A of the bottom wall 30.

  The main body side wall 31 is formed in a rectangular frame shape by rising upward from the outer peripheral edge of the bottom wall 30. The main body side wall 31 includes left and right side walls 310 and 310 and front and rear side walls 320 and 320. The left and right side walls 310, 310 are raised upward from left and right edges that are a pair of long sides of the bottom wall 30, and face each other in the left-right direction. The front and rear side walls 320, 320 are raised upward from the front and rear edges, which are a pair of short sides of the bottom wall 30, and face each other in the front-rear direction.

  The upper lid 16 includes a top plate portion 40 and an upper lid side wall 41. The top plate portion 40 is formed in a substantially rectangular shape in plan view, and a frame-like ridge 401 is formed on the outer peripheral edge of the upper surface thereof over the entire outer peripheral portion. A notch K is formed in which a band that hangs around the upper lid 16 and fixes both is inserted. The notch K is formed to have a predetermined length at the center in the side direction of each of the two sides on the short side of the two pairs of opposing sides of the ridge 401.

  In addition, the dimensions of the top panel 40 and the container body 10 are set so that the outer dimensions of the top panel 40 are slightly smaller than the outer dimensions of the container body 10. That is, in the plan view of FIG. 4, the front and rear side walls 320, 320 and the left and right side walls 310, 310 of the container body 10 protrude outward with respect to the four side walls 40 A, 40 B, 40 C, 40 D of the top plate 40. It has become. By configuring in this way, for example, when the cold storage container 100 is transported while being arranged vertically and horizontally on the loading platform without any gaps, the upper lids 16, 16 of the adjacent cold storage containers 100 are brought into contact with each other due to vibration during traveling. It is possible to prevent the upper lid 16 from being removed.

  The ridge 401 is located on the outer side of the ridge body 402 formed at a predetermined height, and is lower than the ridge body 402 and thinner than the ridge body 402. It consists of an outer part 403.

  By providing (forming) the ridge 401, a recess 40H into which the inner portion 30b of the bottom wall 30 is fitted is formed in the inner portion of the ridge. Thus, when the cold storage containers 100 are stacked in the vertical direction, the inner portion 30b of the bottom wall 30 of the upper cold storage container 100 is fitted into the recess 40H of the upper lid 16 of the lower cold storage container 100, thereby The cold storage container 100 is prevented from being displaced in either the front-rear direction or the left-right direction with respect to the lower cold storage container 100.

  The predetermined information is also formed on the upper surface 40A of the upper lid 16 in the same manner as described above. That is, as described above, predetermined information is formed on the surface of the upper lid 16 by providing the upper lid forming mold (not shown) with the nameplate (not shown). The information formed on the upper lid 16 is such that characters 16M (characters in FIG. 4 are omitted), figures 16N, etc. protrude upward from the surface of the recess 16S that is recessed below the upper surface of the upper lid 16. (See FIG. 4). In this case, by attaching the nameplate to the surface of the mold and molding the upper lid 16, a concave portion 16 </ b> S that is recessed downward from the surface of the upper lid 16 by the thickness of the nameplate is formed and the thickness of the upper lid 16 is reduced. Since 16 does not require strength as compared with the container body 10, it is not a problem.

  Although the present invention has been specifically described above based on the embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

  In the embodiment, the predetermined information is formed on the specific side wall 310 of the container body 10, but the predetermined information may be formed on the other side wall. Moreover, although the accommodating part 2d which accommodates the board | plate material 11 was provided in the shaping | molding die 2 and 3 which shape | molds the container main body 10, you may provide the accommodating part which accommodates the board | plate material 11 in the shaping | molding die which shape | molds the upper cover 16. FIG.

  In the embodiment, the predetermined information is formed on the outer surface of the container body 10. However, the predetermined information may be formed on the inner surface of the container body 10.

  DESCRIPTION OF SYMBOLS 1 ... Mold apparatus, 1A, 1B ... Mold, 2, 3 ... Mold, 2A, 3A ... Body part, 2A1 ... Wall part, 2B, 3B ... Gutter part, 2B1, 2C1, 2D1, 2E1 ... Side wall part, 2D ... concave portion, 2H ... molding surface, 2d ... concave portion (accommodating portion), 3A1, 3B1, 3C1, 3D1, 3E1 ... side wall portion, 4, 7 ... frame, 4A, 4B, 4C ... wall portion, 4K ... opening portion, 5, 8 ... Back plate, 6, 9 ... Steam chamber, 7A, 7B ... Wall part, 7K ... Opening part, 10 ... Container body, 10A ... Opening part, 11 ... Plate material, 11A ... Forming part, 11B ... Non-forming part 11b ... surface, 12 ... screws, 13, 14, 15 ... locations, 13A ... projections, 13B ... recesses, 13C ... mirror image characters, 14A ... projections, 14A, 14B ... mirror image characters, 15A ... projections, 15B, 15C ... recess, 16 ... top lid, 16M ... letter, 16S ... recess, 30 ... bottom , 30A ... surface, 30a ... outer part, 30b ... inner part, 31 ... side wall, 40 ... top plate part, 40A ... upper surface, 40A, 40B, 40C, 40D ... side wall part, 40H ... recess, 41 ... upper cover side wall, DESCRIPTION OF SYMBOLS 100 ... Cold storage container, 101A ... Concave part, 101B ... Convex part, 102A ... Concave part, 103A ... Concave part, 103B, 103C ... Convex part, 310, 310 ... Left and right side wall, 311 ... Main part, 320, 320 ... Front and back side wall, 401 ... ridge, 402 ... ridge body, 403 ... outer side, K ... notch, S ... molding space

Claims (2)

A set of molds for forming a molding space for filling the foamable synthetic resin is provided, and predetermined information is formed on the surface of the foamed molding obtained by heat molding the foamable synthetic resin in the molding space. A mold having a plate member having a forming part for forming and a non-forming part not forming the information attached to at least one mold,
The at least one mold includes an accommodating portion for accommodating the plate material, and the depth of the accommodating portion is substantially flush with the molding surface of the at least one molding die and the surface of the non-formed portion of the plate material. Set to depth ,
Foam molding that is formed by providing the plate material forming portion with a protruding portion that protrudes toward the molding space from the surface of the non-forming portion of the plate material over a predetermined range, and providing the protrusion with a recess. A concave portion over a predetermined range is formed on the body so as to correspond to the protruding portion, and a convex portion corresponding to the concave portion is formed from the surface of the concave portion to form the information,
The metal mold | die characterized by the corner | angular corner of the protrusion edge side outer periphery of the said protrusion part being formed in round shape . 2. The mold according to claim 1 , wherein a plurality of the recessed portions are formed in a foamed molded article to be molded by providing a plurality of the protruding portions on the forming portion of the plate material .

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