JP3186540U - Blow molding equipment - Google Patents

Abstract

A blow forming apparatus for forming a molded product integrated with a heat insulating member more easily.
Retaining pins 61-1, 61-2, and 61-3 detachably hold a heat insulating member 41-2 made of a foam material on a molding surface 31-2 of a mold 11-2. The blow pin blows air into the parison in the cavity of the mold 11-2 that has been clamped, so that the molding material molded by the parison into which the air has been blown is applied to the heat insulating member 41-2 held on the molding surface. Fuse.
[Selection] Figure 5

Description

  The present invention relates to a blow molding apparatus, and more particularly to a blow molding apparatus that can mold a molded product integrated with a heat insulating member.

  Blow molding is a process in which a cylindrical parison is formed from a molten plastic molding material with a die, the parison is sandwiched between molds, a tube is inserted into the parison, and air is blown into the parison to form a molded product. It is used.

  Conventionally, an external molded body element that has a predetermined shape outside the hollow resin molded product and is divided into a plurality of parts is formed, and an internal molded body that is almost the same as or smaller than the predetermined shape of the hollow portion of the hollow resin molded product is formed In the state in which the internal molded body is inserted, a plurality of external molded body elements are bonded to each other by adhesion or welding, and then the internal molded body is heated and softened and the inside is pressurized to press the internal molded body to the outside. There is also one in which it is brought into close contact with the molded body and integrated (for example, see Patent Document 1).

JP-A-7-63130

  However, when attaching a heat insulating member made of a flexible foam material to the outside of the molded product, it is difficult to maintain the shape and position of the heat insulating member, and after the molded product is molded, the heat insulating member is wound, etc. I had to do it.

  This invention is made | formed in view of such a condition, and makes it possible to shape | mold the molded product united with the heat insulation member more easily.

  One aspect of the present invention is that air is blown by holding means for detachably holding a heat insulating member made of a foam material on the molding surface of the mold, and by blowing air into a parison in the mold cavity. The blow molding apparatus includes blow means for fusing a molding material molded by the parison to a heat insulating member held on the molding surface.

  In one aspect of the present invention, a heat insulating member made of a foam material is detachably held on a molding surface of a mold, and air is blown into the parison in a mold cavity which is clamped. Since the molding material molded by the parison is fused to the heat insulating member held on the molding surface, there is no need to wind the heat insulating member after molding the molded product, and it becomes easier to integrate with the heat insulating member. The molded product can be molded.

  The holding means is provided on the molding surface in a substantially conical shape having irregularities on the side surfaces, and the heat insulating member can be held by being stuck into the heat insulating member. In this case, if the heat insulating member made of a foam material is inserted into the holding means, the heat insulating member is held on the molding surface, so that a molded product integrated with the heat insulating member can be molded more easily.

  The length of the holding means can be made shorter than the thickness of the heat insulating member. By doing in this way, since the substantially conical holding means does not pierce the molding material, it pierces only the heat insulating member, so the occurrence of defects is reduced, and the molded product integrated with the heat insulating member more easily. Can be molded.

  Of the holding means, the straight line connecting the apex of the holding means and the center of the bottom surface provided on the molding surface substantially parallel to the direction in which the mold is displaced by clamping or opening is relative to the direction in which the mold is displaced. The intersecting angle can be more than 0 degree and 45 degrees or less. In this case, when the heat insulating member is mounted on the molding surface, the heat insulating member is more securely held, and when the mold is opened, the holding means is easily detached from the heat insulating member, so that it is easier without causing troublesome work. The molded product integrated with the heat insulating member can be molded.

  The holding means can detachably hold the heat insulating member on the molding surface by sticking. It becomes possible to form a molded product integrated with the heat insulating member more easily by reducing the damage to the heat insulating member.

  The holding means can detachably hold the heat insulating member on the molding surface by suction. It becomes possible to form a molded product integrated with the heat insulating member more easily by reducing the damage to the heat insulating member.

  The holding means can adsorb the heat insulating member until the air is blown into the parison after the heat insulating member is mounted on the molding surface, and air can be discharged when the mold is opened. By preventing the heat insulating member from being crushed and maintaining the thickness of the heat insulating member, a molded product integrated with the heat insulating member can be more easily formed.

  The holding means can be a combination of at least any one of a thing stuck into the heat insulating member, a thing sticking to the heat insulating member, and a thing adsorbing the heat insulating member. According to the material of the heat insulating member, a molded product integrated with the heat insulating member can be more easily formed.

  As described above, according to one aspect of the present invention, a molded product integrated with a heat insulating member can be molded more easily.

1 is a front view showing an example of a configuration of a blow molding device 1. FIG. 1 is a top view illustrating an example of a configuration of a blow molding device 1. FIG. It is sectional drawing of an example of the shaping | molding die 11-1 and 11-2. It is a figure which shows the external appearance or cross section of an example of the shaping | molding die 11-2. It is sectional drawing of an example of the shaping | molding die 11-2 with which the heat insulation member 41-2 was mounted | worn. It is a figure which shows the example of the shape of the holding pin 61. FIG. It is a figure which shows the cross section of the other example of the shaping | molding die 11-2. It is a figure which shows the cross section of the further another example of the shaping | molding die 11-2. It is a figure which shows the cross section of the further another example of the shaping | molding die 11-2. It is a figure which shows the cross section of the further another example of the shaping | molding die 11-2.

  Embodiments of the present invention will be described below. Correspondences between the configuration requirements of the present invention and the embodiments described in the detailed description of the invention are exemplified as follows. This description is intended to assure that embodiments supporting the present invention are described in the detailed description of the invention. Therefore, although there are embodiments that are described in the detailed description of the invention but are not described here as embodiments corresponding to the constituent elements of the present invention, It does not mean that the embodiment does not correspond to the configuration requirements. Conversely, even if an embodiment is described here as corresponding to a configuration requirement, that means that the embodiment does not correspond to a configuration requirement other than the configuration requirement. It's not something to do.

  One aspect of the present invention is a holding means (for example, holding pins 61-1, 61-2, and 61-3 in FIG. 5) that detachably holds a heat insulating member made of a foam material on a molding surface of a mold, Blow means (for example, a figure) which fuses the molding material formed by the parison into which the air has been blown to the heat insulating member held on the molding surface by blowing air into the parison in the cavity of the mold that has been clamped 1 blow pin 18).

  Hereinafter, a blow molding apparatus according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view showing an example of the configuration of the blow molding apparatus 1. FIG. 2 is a top view showing an example of the configuration of the blow molding apparatus 1 as seen from the cross section AA ′ in FIG. 1.

  In addition, the front-rear direction with respect to the blow molding apparatus 1 is illustrated by the Y axis, the upper and lower directions are illustrated by the Z axis, and the left and right directions are illustrated by the X axis. Hereinafter, the left side in FIG. 1 in the X-axis direction is simply referred to as the left side, and the right side in FIG. 1 in the X-axis direction is simply referred to as the right side. Further, hereinafter, the near side in FIG. 1 in the Y-axis direction is simply referred to as a front side, and the back side in FIG. 1 in the Y-axis direction is simply referred to as a rear side. Furthermore, hereinafter, the upper side in FIG. 1 in the Z-axis direction is simply referred to as the upper side, and the lower side in FIG. 1 in the Z-axis direction is simply referred to as the lower side.

  A holding pin for detachably holding a heat insulating member made of a foam material is provided on the molding surface of the mold of the blow molding apparatus 1. Prior to blow molding, a heat insulating member made of a foam material is attached to the molding surface of the mold where the mold is opened manually or by a robot or an automatic machine. Next, the blow molding apparatus 1 molds a cylindrical parison from a plastic molding material such as nylon (trademark) 6 or nylon 6,6, and places the mold between the molds that are opened. The parison is sandwiched by clamping. The blow molding device 1 inserts a tubular needle into the parison, blows a gas such as air into the parison, and fuses the molding material molded by the parison to the heat insulating member held on the molding surface.

  Blow molding apparatus 1 includes molding dies 11-1 and 11-2, bases 12-1 and 12-2, mold clamping portions 13-1 and 13-2, die 14, sealing dies 15-1 and 15-2, It includes bases 16-1 and 16-2, mold clamping portions 17-1 and 17-2, blow pin 18, guide 19, air valve 20, and air cylinder 21.

  The molds 11-1 and 11-2 are two-part split molds (molds). Of the surfaces of the molding dies 11-1 and 11-2, the molded product is placed on the surface side in contact with each other, that is, on the right side of the molding die 11-1 and the left side of the molding die 11-2 in FIG. A molding surface for molding is formed. For example, the molds 11-1 and 11-2 are molds for molding a product portion used as a product among the molded products. That is, when the molds 11-1 and 11-2 are clamped by moving in the direction indicated by the arrow T in FIG. 1, a cavity is formed by the molding surfaces of the molds 11-1 and 11-2. The The molds 11-1 and 11-2 are provided with a temperature adjusting device (not shown) for adjusting the temperature.

  The base 12-1 fixes the molding die 11-1, and the base 12-2 fixes the molding die 11-2. The bases 12-1 and 12-2 are moved on the frame of the blow molding apparatus 1 by the mold clamping portions 13-1 and 13-2 together with the fixed molds 11-1 and 11-2, respectively. . The mold clamping portions 13-1 and 13-2 are hydraulically, electrically driven, air, or the like as a power source, and the bases 12-1 and 12-2 together with the molds 11-1 and 11-2 are indicated by an arrow T in FIG. Move in the indicated direction or in the opposite (opposite) direction (left-right direction). That is, the mold clamping portions 13-1 and 13-2 move the bases 12-1 and 12-2 in the direction indicated by the arrow T in FIG. Combine 1 and 11-2 and clamp. Further, the mold clamping portions 13-1 and 13-2 move the bases 12-1 and 12-2 in a direction opposite (opposite) to the direction indicated by the arrow T in FIG. -1 and 11-2 are separated and the mold is opened. In addition, the sealing part sealed on both sides of a parison is provided in the lower end of the shaping | molding die 11-1 and 11-2.

  The die 14 forms a cylindrical parison from the molding material and pushes it downward in FIG. That is, the pellet-shaped molding material put into a hopper (not shown) is kneaded and melted by an injection screw (not shown) and supplied to the die 14. The die 14 is formed into a cylindrical shape by extruding a molten molding material from a parison forming cavity that gradually decreases in diameter toward the bottom formed between the die head and the core provided therein. The parison is formed and the parison is pushed downward in FIG.

  The sealing dies 15-1 and 15-2 can be opened and closed by the bases 16-1 and 16-2 and the mold clamping portions 17-1 and 17-2. The sealing dies 15-1 and 15-2 are sealed with a parison extruded downward from the die 14, and when closed, form a cavity with an internal molding surface. At the upper ends of the sealing dies 15-1 and 15-2, a sealing part that seals with a parison is provided. Formed below the sealing portions of the sealing dies 15-1 and 15-2 is a molding surface whose upper side forms a substantially hemispherical cavity when closed.

  The base 16-1 is provided on the molding die 11-1 and the base 12-1, and holds the sealing die 15-1 in a movable manner. The base 16-2 is provided on the molding die 11-2 and the base 12-2, and holds the sealing die 15-2 in a movable manner. The mold clamping portions 17-1 and 17-2 use hydraulic pressure, electric power, air, or the like as a power source, and the sealing molds 15-1 and 15-2 are in the direction indicated by the arrow T in FIG. ) Direction (left-right direction). That is, the mold clamping unit 17-1 is fixed to the base 16-1, and the sealing mold 15-1 held movably on the base 16-1 is moved in the direction indicated by the arrow T in FIG. Move in the opposite direction. The mold clamping part 17-2 is fixed to the base 16-2, and the sealing mold 15-2 held movably on the base 16-2 is moved in the direction indicated by the arrow T in FIG. Move in the direction.

  In other words, the mold clamping parts 17-1 and 17-2 are formed by combining the sealing part of the sealing mold 15-1 and the sealing part of the sealing mold 15-2, and the molding surface of the sealing mold 15-1. The sealing molds 15-1 and 15-2 are combined and clamped so that the molding surface of the sealing mold 15-2 is aligned. Further, the mold clamping portions 17-1 and 17-2 are opened by separating the sealing molds 15-1 and 15-2.

  The blow pin 18 is made of a metal needle or the like and is formed of a tubular needle having a sharp tip. The blow pin 18 is inserted into a parison and blows air such as air (so-called air) or nitrogen having a predetermined pressure. Hereinafter, a case where air is blown into a parison will be described as an example. The guide 19 is formed in a block shape and is arranged along the parting lines of the mold clamping portions 17-1 and 17-2 when the mold clamping is performed. The guide 19 guides the blow pin 18 to the sealing molds 15-1 and 15-2 by the provided holes. The hole provided in the guide 19 for guiding the blow pin 18 is located on the surface where the parting lines of the sealing molds 15-1 and 15-2 are arranged when the mold is clamped. The air valve 20 is an air switching valve that is electromagnetically turned on and off by control of a blow control unit (not shown), and supplies air by supplying air to the blow pin 18 or stops air flowing to the blow pin 18 by blocking air.

  The air cylinder 21 moves the air valve 20 and the blow pin 18 by air. That is, the air cylinder 21 is a parison located in a portion formed in a substantially hemispherical shape among the cavities of the sealing molds 15-1 and 15-2 that are closed and sealed with a sealing portion. The blow pin 18 is pierced into this part so as to cross the parting lines of the sealing molds 15-1 and 15-2.

  FIG. 3 is a cross-sectional view of an example of the molds 11-1 and 11-2 viewed from the cross-section BB ′ in FIG. Hereinafter, the procedure of blow molding will be described with reference to FIG. FIG. 3A shows the state of the molds 11-1 and 11-2 that are opened. Nothing is mounted on the molding surface 31-1 of the molding die 11-1 and the molding surface 31-2 of the molding die 11-2. Blow molding starts from the state shown in FIG. The sealing molds 15-1 and 15-2 are opened. Although details will be described later, holding pins 61-1, 61-2 and 61-3 are provided on the molding surface 31-1 of the molding die 11-1 and the molding surface 31-2 of the molding die 11-2. It has been.

  First, as shown in FIG. 3B, a heat insulating member made of a foam material is formed on the molding surface 31-1 of the molding die 11-1 in a state where the molding dies 11-1 and 11-2 are opened. 41-1 is mounted, and a heat insulating member 41-2 made of a foam material is mounted on the molding surface 31-2 of the mold 11-2. The heat insulating members 41-1 and 41-2 are respectively attached to the molding surfaces 31-1 and 31-2 by an operator, a robot, an automatic machine, or the like. The heat insulating members 41-1 and 41-2 are members having heat insulating properties, and are made of a foam material such as urethane foam, phenol foam, polystyrene foam, or foam rubber. Even if the heat insulating member 41-1 or 41-2 is formed in a flat plate shape, the shape is formed in two dimensions or three dimensions in accordance with the shape of the molding surface 31-1 or 31-2. There may be. When the shape of the heat insulating members 41-1 and 41-2 is formed two-dimensionally or three-dimensionally according to the shape of the molding surface 31-1 or 31-2, the heat insulating member 41-1 or 41-2 is formed on the molding surface 31. -1 or 31-2. Further, even if the heat insulating member 41-1 or 41-2 is attached to the entire molding surface 31-1 or 31-2 (entire surface), a part of the molding surface 31-1 or 31-2 (partial surface). ).

  As shown in FIG. 3C, the die 14 is a molding die in which a cylindrical parison 42 is molded from a plastic molding material such as nylon (trademark) 6 or nylon 6,6, and the mold is opened. Extrude between 11-1 and 11-2 and place. At this time, the parison 42 is in a molten state.

  Next, as shown in FIG. 3D, the molds 11-1 and 11-2 are clamped by moving in the direction indicated by the arrow T in FIG. By the mold clamping, a cavity 43 is formed on the molding surface 31-1 of the molding die 11-1 and the molding surface 31-2 of the molding die 11-2, which is a space in which the parison 42 into which air is blown is expanded. At this time, the lower end of the parison 42 is sandwiched and sealed by a sealing portion provided at the lower ends of the molds 11-1 and 11-2. Further, the sealing molds 15-1 and 15-2 are clamped. At this time, the upper end of the parison 42 (immediately below the extrusion opening of the parison 42 of the die 14) is sandwiched and sealed by the sealing portions provided at the upper ends of the sealing molds 15-1 and 15-2. .

  Further, as shown in FIG. 3E, since the blow pin 18 is inserted into the parison 42 and air of a predetermined pressure is blown in, the parison 42 in the molten state expands in the cavity 43 and is A molding material 44 having a shape along the shape of 43 is formed. In other words, the molding material 44 is molded into a shape along the molding surface 31-1 and the molding surface 31-2 that are combined. At this time, since the molding material 44 is in contact with the heat insulating members 41-1 and 41-2 having heat insulation properties, the temperature of the molding material 44 is lower than that in the case of directly contacting the molding surface 31-1 or 31-2. It is difficult to come into contact with the heat insulating members 41-1 and 41-2 while the molten state is maintained for a longer time. Therefore, the molding material 44 is fused to the heat insulating members 41-1 and 41-2 mounted on the molding surfaces 31-1 and 31-2, respectively. The molding material 44 and the heat insulating members 41-1 and 41-2 fused to this constitute a molded product 45. When the heat insulating member 41-1 or 41-2 is formed in a flat plate shape, the heat insulating members 41-1 and 41-2 are formed on the molding surface 31- by the molding material 44 that is expanded and molded. 1 or 31-2, the heat insulating members 41-1 and 41-2 are shaped along the molding surface 31-1 and the molding surface 31-2. As a result, the molded product 45 is formed on the molding surface 31. -1 and the shape along the molding surface 31-2.

  Finally, the molds 11-1 and 11-2 are opened, the sealing molds 15-1 and 15-2 are opened, and the molding is made of the molding material 44 and the heat insulating members 41-1 and 41-2. The product 45 is taken out.

  FIG. 4 is a view showing an appearance or a cross section of an example of the mold 11-2. FIG. 4A is a side view of the mold 11-2. FIG. 4B is a cross-sectional view of the mold 11-2 viewed from the cross-section CC ′ in FIG. FIG. 4C is a cross-sectional view of the mold 11-2 as seen from a cross-section BB ′ in FIG. FIG. 5 is a cross-sectional view of an example of the molding die 11-2 to which the heat insulating member 41-2 is attached, as viewed from the cross-section BB 'in FIG.

  The holding pins 61-1, 61-2, and 61-3 are provided on the molding surface 31-2. The holding pins 61-1, 61-2, and 61-3 may be formed integrally with the molding surface 31-2, or fixed to the molding surface 31-2 by screwing or bonding. But you can. The holding pins 61-1, 61-2, and 61-3 have a substantially conical shape. That is, the side away from the molding surface 31-2 of the holding pins 61-1, 61-2, and 61-3 is sharp, and the molding surface 31-2 of the holding pins 61-1, 61-2, and 61-3 is provided. The side is widened toward the molding surface 31-2 side. The holding pins 61-1, 61-2, and 61-3 are inserted into the heat insulating member 41-2 made of a foam material and attached to the molding surface 31-2, so that the heat insulating member 41- is formed on the molding surface 31-2. 2 is held. The front ends of the holding pins 61-1, 61-2, and 61-3 face the molding surface 31-1 of the molding die 11-1 that are arranged to face each other.

  The holding pin 61-1 is provided in a portion of the molding surface 31-2 that is substantially orthogonal to the direction in which the molding die 11-2 is displaced by clamping or opening (in this case, the X-axis direction). The angle at which the straight line connecting the apex of the holding pin 61-1 and the center of the bottom intersects with the direction in which the molding die 11-2 is displaced is about 0 degree. That is, the holding pin 61-1 has a sharp shape in the direction in which the molding die 11-2 is displaced (in this case, the X-axis direction).

  The holding pin 61-2 is a surface on the rear side of the molding surface 31-2 and is provided on a surface substantially parallel to the surface defined by the X axis and the Z axis. That is, the holding pin 61-2 is provided at a portion of the molding surface 31-2 that is substantially parallel to the direction (X-axis direction) in which the molding die 11-2 is displaced by clamping or opening. The angle at which the straight line connecting the apex of the holding pin 61-2 and the center of the bottom surface intersects the direction in which the molding die 11-2 is displaced is more than 0 degree and 45 degrees or less. By doing in this way, as shown in FIG. 5, when the heat insulating member 41-2 is mounted on the molding surface 31-2, the heat insulating member 41-2 is more reliably held, and the mold 11-2 is the mold. When opened, the holding pin 61-2 is easily removed from the heat insulating member 41-2 and easily removed. Therefore, the troublesome thing for removing the heat insulation member 41-2 from the holding pin 61-2 does not arise.

  Similarly, the holding pin 61-3 is a surface on the front side of the molding surface 31-2 and is provided on a surface substantially parallel to the surface defined by the X axis and the Z axis. That is, the holding pin 61-3 is provided at a portion of the molding surface 31-2 that is substantially parallel to the direction (X-axis direction) in which the molding die 11-2 is displaced by clamping or opening. The angle at which the straight line connecting the apex of the holding pin 61-3 and the center of the bottom surface intersects the direction in which the molding die 11-2 is displaced is more than 0 degree and 45 degrees or less. By doing in this way, as shown in FIG. 5, when the heat insulating member 41-2 is mounted on the molding surface 31-2, the heat insulating member 41-2 is more reliably held, and the mold 11-2 is the mold. When opened, the holding pin 61-3 is easily detached from the heat insulating member 41-2 and easily removed. Therefore, the troublesome thing for removing the heat insulation member 41-2 from the holding pin 61-3 does not arise.

  Further, the lengths of the holding pins 61-1, 61-2, and 61-3 are made shorter than the thickness of the heat insulating member 41-2. By doing in this way, since the substantially conical holding pins 61-1, 61-2 and 61-3 do not pierce the molding material 44 but only the heat insulating member 41-2, the occurrence of defects is reduced. Thus, the molded product 45 integrated with the heat insulating member 41-2 can be molded more easily.

  Similarly, holding pins 61-1, 61-2, and 61-3 are also provided on the molding surface 31-1 of the mold 11-1, and the attached heat insulating member 41-1 is held. Description is omitted.

  Hereinafter, the holding pins 61-1, 61-2, or 61-3 are simply referred to as holding pins 61 when it is not necessary to distinguish them individually.

  FIG. 6 is a diagram illustrating an example of the shape of the holding pin 61. FIG. 6A is a side view showing an example of the shape of the holding pin 61, and FIG. 6B is a top view showing an example of the shape of the holding pin 61. The holding pin 61 shown in FIGS. 6 (A) and 6 (B) has a conical shape, and is inserted into the heat insulating member 41-1 or 41-2 to form the heat insulating member 41-1 or 41-2. Hold at 31-1 or 31-2. Note that the holding pin 61 may have a pyramid shape such as a triangular pyramid shape or a quadrangular pyramid shape.

  FIG. 6C is a side view showing another example of the shape of the holding pin 61, and FIG. 6D is a top view showing another example of the shape of the holding pin 61. The holding pin 61 shown in FIG. 6 (C) and FIG. 6 (D) has a conical shape in which concentric disk-shaped protrusions are provided on the side surface, and is inserted into the heat insulating member 41-1 or 41-2. The heat insulating member 41-1 or 41-2 is held on the molding surface 31-1 or 31-2. Since the concentric disk-shaped protrusions on the side surface of the holding pin 61 are hooked inside the heat insulating member 41-1 or 41-2, the heat insulating member 41-1 or 41-2 is more reliably held.

  FIG. 6E is a side view showing still another example of the shape of the holding pin 61, and FIG. 6F is a top view showing still another example of the shape of the holding pin 61. The holding pin 61 shown in FIG. 6E and FIG. 6F is formed in a wood screw shape (tapping screw shape), and is inserted into the heat insulating member 41-1 or 41-2 to insulate the heat insulating member 41-1 or 41. -2 is held on the molding surface 31-1 or 31-2. Since the screw-like protrusion on the side surface of the holding pin 61 is caught inside the heat insulating member 41-1 or 41-2, the heat insulating member 41-1 or 41-2 is more reliably held.

  FIG. 6G is a side view showing still another example of the shape of the holding pin 61, and FIG. 6H is a top view showing still another example of the shape of the holding pin 61. The holding pin 61 shown in FIG. 6 (G) and FIG. 6 (H) has a conical shape with concentric columnar protrusions provided on the side surface, and is inserted into the heat insulating member 41-1 or 41-2. The heat insulating member 41-1 or 41-2 is held on the molding surface 31-1 or 31-2. Since the concentric cylindrical protrusion on the side surface of the holding pin 61 is caught inside the heat insulating member 41-1 or 41-2, the heat insulating member 41-1 or 41-2 is more reliably held.

  Thus, the shape of the holding pin 61 provided on the molding surface 31-1 or 31-2 is a substantially conical shape having irregularities on the side surface, and the holding pin 61 is stuck in the heat insulating member 41-1 or 41-2. Thus, the heat insulating member 41-1 or 41-2 can be held. In this specification, the substantially conical shape indicates the shape of the holding pin 61 described with reference to FIG. In this case, if the heat insulating member 41-1 or 41-2 made of a foam material is inserted into the holding pin 61, the heat insulating member 41-1 or 41-2 is held on the molding surface 31-1 or 31-2. The molded product 45 integrated with the heat insulating member 41-1 or 41-2 can be easily molded.

  Further, of the holding pins 61, the apex of the holding pin 61 provided on the molding surface 31-1 or 31-2 substantially parallel to the direction in which the molding die 11-1 or 11-2 is displaced by clamping or opening. The angle at which the straight line connecting the center of the bottom surface and the direction in which the mold 11-1 or 11-2 is displaced can be more than 0 degree and 45 degrees or less. In this case, when the heat insulating member 41-1 or 41-2 is attached to the molding surface 31-1 or 31-2, the heat insulating member 41-1 or 41-2 is more reliably attached to the molding surface 31-1 or 31-2. Since the holding pin 61 is easily detached from the heat insulating member 41-1 or 41-2 when the mold is held and the mold is opened, the heat insulating members 41-1 and 41-2 can be more easily connected without causing any trouble. The integrated molded product 45 can be molded.

  Instead of the holding pin 61, an adhesive member may be provided to hold the heat insulating members 41-1 and 41-2. Next, an example in which an adhesive member is provided on the mold 11-2 for holding the heat insulating member 41-2 will be described.

  FIG. 7 is a view showing a cross section of another example of the mold 11-2 as seen from the cross section BB 'in FIG. A plurality of adhesive members 71 are provided at predetermined intervals on the molding surface 31-2 of the mold 11-2 shown in FIG. The adhesive member 71 is made of a material having an adhesive property, such as a double-sided adhesive tape or a double-sided adhesive rubber having a highly viscous liquid or gel-like material coated on its surface, or an adhesive gel made of a gel-like material, It adheres to the molding surface 31-2 and the heat insulating member 41-2. The adhesive member 71 adheres to the molding surface 31-2 of the molding die 11-2 and adheres to the heat insulating member 41-2 made of a foam material attached to the molding surface 31-2, thereby forming the molding surface 31-2. The heat insulating member 41-2 is detachably held.

  In addition, the adhesive force of the adhesive member 71 may increase the adhesive force on the molding surface 31-2 side, weaken the adhesive force on the heat insulating member 41-2 side, or may have the same strength on both sides. Further, the adhesive member 71 may be fixed to the molding surface 31-2 by a method other than adhesion. For example, the adhesive member 71 may be adhered to the molding surface 31-2. Furthermore, a concave portion that is depressed to a depth corresponding to the thickness of the adhesive member 71 is provided in the molding surface 31-2 in a range corresponding to the width and length of the adhesive member 71, and the adhesive member 71 is attached to the concave portion. You may make it attach. In this case, no depression is formed on the surface of the heat insulating member 41-2.

  Similarly, the pressure-sensitive adhesive member 71 is provided on the molding surface 31-1 of the molding die 11-1, and the attached heat insulating member 41-1 is held, so that the description thereof is omitted.

  Thus, the adhesive member 71 holds the heat insulating member 41-1 or 41-2 detachably on the molding surface 31-1 or 31-2 by adhering.

  Moreover, it can also be made to hold | maintain the heat insulation members 41-1 and 41-2 by adsorb | sucking with the negative pressure which suck | inhales air. Next, an example in which an adsorption portion is provided in the mold 11-2 for holding the heat insulating member 41-2 will be described.

  FIG. 8 is a view showing a cross section of still another example of the molding die 11-2 as seen from the cross section BB 'in FIG. The blow molding apparatus 1 is provided with a suction part 81, and a suction part 82 is provided on the molding surface 31-2 of the molding die 11-2. The suction unit 81 is composed of a suction device such as a rotary pump, a swinging piston type pump, or a diaphragm pump. The suction unit 81 sucks air from a hose connected to the suction unit 82 to generate negative pressure, and is connected by the hose or hole. The air is sucked from the suction portion 82 that has been used. The suction part 82 is shaped like a nozzle on the molding surface 31-2 of the molding die 11-2, and detachably sucks the heat insulating member 41-2 made of a foam material by the negative pressure generated by the suction part 81. That is, in this case, the heat insulating member 41-2 made of a foam material is pressed against the molding surface 31-2 by atmospheric pressure.

  The suction portion 81 generates a negative pressure from when the heat insulating member 41-2 is mounted on the molding surface 31-2 until air is blown into the parison 42 and the molding material 44 is molded. When 11-1 and 11-2 are opened, the generation of negative pressure is stopped. Therefore, the adsorbing part 82 adsorbs the heat insulating member 41-2 after the heat insulating member 41-2 is mounted on the molding surface 31-2 until the air is blown into the parison 42 and the molding material 44 is molded. When the molds 11-1 and 11-2 are opened, the suction is stopped.

  A plurality of suction portions 82 are provided at predetermined intervals on the molding surface 31-2. By doing in this way, the whole heat insulation member 41-2 is pressed by the molding surface 31-2 by atmospheric pressure, and is reliably pressed by the molding surface 31-2. In the case of using the adsorbing portion 82, it is more effective to use the heat insulating member 41-2 of an independent air envelope that does not allow air to pass therethrough and has air bubbles inside, but the air bubbles are not connected to each other in order to maintain the holding force. is there.

  Likewise, the molding surface 31-1 of the molding die 11-1 is also provided with a suction part 82 connected to the suction part 81 with a hose or the like, and the attached heat insulating member 41-1 is held. Description is omitted.

  Thus, the adsorption | suction part 82 hold | maintains the heat insulation member 41-1 or 41-2 on the shaping | molding surface 31-1 or 31-2 so that attachment or detachment is possible.

  Furthermore, the heat insulating members 41-1 and 41-2 can be held by combining the holding pin 61 and the suction portion 82.

  FIG. 9 is a view showing a cross section of still another example of the molding die 11-2 as seen from the cross section BB 'in FIG. The holding pin 61-1 is provided in a portion of the molding surface 31-2 that is substantially orthogonal to the direction in which the molding die 11-2 is displaced by clamping or opening (in this case, the X-axis direction). The angle at which the straight line connecting the apex of the holding pin 61-1 and the center of the bottom intersects with the direction in which the molding die 11-2 is displaced is about 0 degree. That is, the holding pin 61-1 has a sharp shape in the direction in which the molding die 11-2 is displaced (in this case, the X-axis direction).

  Similarly to the case illustrated in FIG. 8, the suction unit 81 generates a negative pressure and sucks air from the suction unit 82 connected by a hose. The adsorption part 82 is a surface on the rear side of the molding surface 31-2, a surface substantially parallel to the surface defined by the X axis and the Z axis, and a surface on the front side of the molding surface 31-2, It is provided on a plane substantially parallel to the plane defined by the axis and the Z-axis.

  The suction portion 81 generates a negative pressure from when the heat insulating member 41-2 is mounted on the molding surface 31-2 until air is blown into the parison 42 and the molding material 44 is molded. When 11-1 and 11-2 are opened, the generation of negative pressure is stopped. Therefore, the adsorbing part 82 adsorbs the heat insulating member 41-2 after the heat insulating member 41-2 is mounted on the molding surface 31-2 until the air is blown into the parison 42 and the molding material 44 is molded. When the molds 11-1 and 11-2 are opened, the suction is stopped.

  In this way, when the heat insulating member 41-2 is mounted on the molding surface 31-2, the heat insulating member 41-2 is more securely held, and when the mold 11-2 is opened, the heat insulating member 41 -2 is easily removed from the holding pin 61-1 and is easily removed from the suction portion 82 and easily removed from the mold 11-2. Therefore, the troublesome thing for removing the heat insulation member 41-2 does not arise.

  Similarly, since the holding pin 61-1 and the suction portion 82 are provided on the molding surface 31-1 of the molding die 11-1, and the attached heat insulating member 41-1 is held, description thereof will be omitted.

  Further, when the heat insulating member 41-1 or 41-2 is held on the molding surface 31-1 or 31-2, the heat insulating member 41-1 or 41-2 is adsorbed by the negative pressure for sucking air, thereby forming the molding die 11-1. When the molds and 11-2 are opened, the heat insulating members 41-1 and 41-2 may be held by combining the suction discharge unit 92 that discharges air and the holding pin 61.

  FIG. 10 is a view showing a cross section of still another example of the mold 11-2 as seen from the cross section BB 'in FIG. The holding pin 61-1 is provided in a portion of the molding surface 31-2 that is substantially orthogonal to the direction in which the molding die 11-2 is displaced by clamping or opening (in this case, the X-axis direction). The angle at which the straight line connecting the apex of the holding pin 61-1 and the center of the bottom intersects with the direction in which the molding die 11-2 is displaced is about 0 degree. That is, the holding pin 61-1 has a sharp shape in the direction in which the molding die 11-2 is displaced (in this case, the X-axis direction).

  In addition, the suction blower 91 sucks air from the hose connected to the suction discharge unit 92 and generates a negative pressure when holding the heat insulating member 41-2 on the molding surface 31-2 of the mold 11-2. Then, air is sucked from the suction discharge unit 92 connected by a hose or a hole. In addition, the suction blower 91 sends air to the hose connected to the suction discharge unit 92 when the mold 11-2 is opened. For example, the suction blower 91 is composed of a rotary pump or the like, and switches between suction and blow by rotating forward or backward. Further, the suction air blowing section 91 may be configured by combining a suction pump and an air blowing pump, and switching between suction and air blowing by operating one of them.

  The suction discharge unit 92 includes a surface substantially orthogonal to a direction (in this case, the X-axis direction) in which the molding die 11-2 is displaced by clamping or opening of the molding surface 31-2 and the molding surface 31-2. A rear surface that is substantially parallel to the surface defined by the X axis and the Z axis, and a front surface of the molding surface 31-2 that is substantially the same as the surface defined by the X axis and the Z axis. It is provided on parallel surfaces. That is, a plurality of suction and discharge portions 92 are provided at predetermined intervals on the molding surface 31-2 of the molding die 11-2. The suction discharge unit 92 is provided so as not to overlap the holding pin 61-1.

  The suction discharge unit 92 is formed in a nozzle shape on the molding surface 31-2 of the molding die 11-2. When the heat insulating member 41-2 is mounted on the molding surface 31-2 of the mold 11-2, the suction discharge unit 92 sucks the heat insulating member 41-2 made of a foam material by the negative pressure from the suction air blowing unit 91. And hold. The suction discharge unit 92 discharges the air sent from the suction air blowing unit 91 to the heat insulating member 41-2 when the mold 11-2 is opened.

  By doing in this way, when attaching the heat insulation member 41-2 to the molding surface 31-2, the heat insulation member 41-2 is more reliably held. In addition, when the mold 11-2 is opened, the holding pin 61-1 is easily removed from the heat insulating member 41-2, preventing the heat insulating member 41-2 from being crushed and the thickness of the heat insulating member 41-2. Can be maintained. Furthermore, since the molding material 44 is cooled and solidified more reliably by the air sent from the suction blower 91, the molding material 44 and the heat insulating members 41-1 and 41-2 are securely joined by fusion, and The molded product 45 is more reliably molded into a desired shape. Furthermore, since air is sent between the molding surface 31-2 and the heat insulating member 41-2, the heat insulating member 41-2 is easily detached from the mold 11-2. Therefore, the troublesome thing for removing the heat insulation member 41-2 from the molding surface 31-2 does not arise.

  Similarly, the holding surface 61-1 and the suction / discharge unit 92 are also provided on the molding surface 31-1 of the molding die 11-1, and the attached heat insulating member 41-1 is held. .

  As described above, the holding pins 61-1, 61-2, and 61-3 are made of the heat insulating member 41-1 or 41-2 made of a foam material by molding the molding surface 31-1 or the molding die 11. -2 is detachably held on the molding surface 31-2, and the blow pin 18 blows air into the parison 42 in the cavities of the molds 11-1 and 11-2 that have been clamped. The molding material 44 molded by the parison 42 is fused to the heat insulating members 41-1 and 41-2 held on the molding surface 31-1 or 31-2.

  There is no need to wind the heat insulating member after the molded product 45 is formed, and the molded product 45 integrated with the heat insulating member can be formed more easily.

  The holding pins 61-1, 61-2, or 61-3 are provided on the molding surface 31-1 or 31-2 in a substantially conical shape having irregularities on the side surfaces, and the heat insulating member 41-1 or 41-2. The heat insulating member 41-1 or 41-2 can be held by being pierced. In this case, if the heat insulating member 41-1 or 41-2 made of a foam material is inserted into the holding pins 61-1, 61-2, or 61-3, the heat insulating member 41-1 or 41-2 becomes the molding surface 31-1. Or since it is hold | maintained at 31-2, the molded article 45 united with the heat insulation member can be shape | molded more easily.

  The length of the holding pins 61-1, 61-2, or 61-3 can be made shorter than the thickness of the heat insulating member 41-1 or 41-2. By doing in this way, since the substantially conical holding pins 61-1, 61-2, or 61-3 do not pierce the molding material 44, they pierce only the heat insulating member 41-1 or 41-2. It is possible to form the molded product 45 integrated with the heat insulating member more easily with less generation.

  The apex and bottom surface of the holding pin 61-2 or 61-3 provided on the molding surface 31-1 or 31-2 substantially parallel to the direction in which the molding die 11-1 or 11-2 is displaced by clamping or opening The angle at which the straight line connecting the center of the crossing with respect to the direction in which the mold 11-1 or 11-2 is displaced can exceed 0 degree and be 45 degrees or less. In this case, when the heat insulating member 41-1 or 41-2 is attached to the molding surface 31-1 or 31-2, the heat insulating member 41-1 or 41-2 is more securely held and the heat insulating member is opened when the mold is opened. Since the holding pins 61-2 or 61-3 are easily detached from the 41-1 or 41-2, the molded product 45 integrated with the heat insulating member can be more easily formed without causing any trouble. become.

  The heat-insulating member 41-1 or 41-2 can be detachably held on the molding surface 31-1 or 31-2 by being adhered to the adhesive member 71. It becomes possible to form the molded product 45 integrated with the heat insulating member more easily with less damage to the heat insulating member.

  The suction part 82 can hold the heat insulating member 41-1 or 41-2 in a detachable manner on the molding surface 31-1 or 31-2 by suction. It becomes possible to form the molded product 45 integrated with the heat insulating member more easily with less damage to the heat insulating member.

  From the time when the heat insulating member 41-1 or 41-2 is mounted on the molding surface 31-1 or 31-2, until the air is blown into the parison 42, the heat insulating member 41-1 or 41-2 is attached to the suction discharge unit 92. When adsorbed and the mold 11-1 or 11-2 is opened, air can be discharged. By preventing the heat insulating member from being crushed and maintaining the thickness of the heat insulating member, the molded product 45 integrated with the heat insulating member can be formed more easily.

  A combination of at least any one of a member stuck in the heat insulating member 41-1 or 41-2, a member sticking to the heat insulating member 41-1 or 41-2, and a member adsorbing the heat insulating member 41-1 or 41-2 Heat insulation. According to the material of the heat insulating member, the molded product 45 integrated with the heat insulating member can be formed more easily.

  The molding material has been described as a plastic such as nylon (trademark) 6 or nylon 6,6, but is not limited to this, and a thermoplastic such as a general-purpose plastic such as polyvinyl chloride, polypropylene, or polyethylene, or an engineering plastic. An elastomer can be used. Furthermore, a composite material reinforced with fibers such as glass fibers can be used as the molding material. Furthermore, although it has been described that the heat insulating members 41-1 and 41-2 are members having heat insulating properties, they may be members having sound insulating properties or sound absorbing properties.

  Although the blow molding apparatus 1 has been described as an example, the present invention can also be applied to a suction blow molding apparatus.

  The embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Blow molding apparatus, 11-1 and 11-2 Mold, 12-1 and 12-2 Base, 13-1 and 13-2 Clamping part, 14 Dies, 15-1 and 15-2 Sealing mold, 16 -1 and 16-2 Base, 17-1 and 17-2 Clamping part, 18 Blow pin, 19 Guide, 20 Air valve, 21 Air cylinder, 41-1 and 41-2 Thermal insulation member, 42 Parison, 43 Cavity, 44 Molding Material, 45 molded product, 61, 61-1, 61-2 and 61-3 holding pin, 71 adhesive member, 81 suction part, 82 suction part, 91 suction blower part, 92 suction discharge part

Claims (8)

Holding means for detachably holding a heat insulating member made of foam material on the molding surface of the mold;
Blowing means for fusing air to the parison in the mold cavity that has been clamped to fuse the molding material molded by the parison into which the air has been blown to the heat insulating member held on the molding surface A blow molding device comprising: The blow molding apparatus according to claim 1,
The said holding | maintenance means makes the substantially cone shape which has an unevenness | corrugation in a side surface, is provided in the said shaping | molding surface, The blow molding apparatus hold | maintains the said heat insulation member by piercing the said heat insulation member. In the blow molding apparatus according to claim 2,
The length of the holding means is shorter than the thickness of the heat insulating member. In the blow molding apparatus according to claim 2,
Of the holding means, a straight line connecting the apex of the holding means and the center of the bottom surface provided on the molding surface substantially parallel to the direction in which the mold is displaced by clamping or opening is a displacement of the mold. The blow molding device has an angle that intersects the direction in which it exceeds 0 degrees and is 45 degrees or less. The blow molding apparatus according to claim 1,
The said holding | maintenance means is a blow molding apparatus which hold | maintains the said heat insulation member in the said molding surface so that attachment or detachment is possible. The blow molding apparatus according to claim 1,
The said holding | maintenance means is a blow molding apparatus which hold | maintains the said heat insulation member so that attachment or detachment is possible on the said molding surface. The blow molding apparatus according to claim 6,
The holding means adsorbs the heat insulating member until the air is blown into the parison after the heat insulating member is mounted on the molding surface, and discharges air when the mold is opened. . The blow molding apparatus according to claim 1,
The said holding | maintenance means consists of at least any two combination of what sticks to the said heat insulation member, what adheres to the said heat insulation member, and what adsorb | sucks the said heat insulation member.

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