JP5087710B1 - Mold for film insert molding and resin product molded thereby - Google Patents

Abstract

Disclosed is a film insert molding die that can prevent a positional deviation of a film set by evacuation even when the injection pressure at the time of injection of a molten resin is large, and a resin product molded thereby. about.
A film insert molding die 1 includes a first die 10 and a second die 20 capable of forming a cavity 30 when the mold is clamped relatively to the first die 10. When the film 40 is applied to the cavity surface 14a forming the cavity 30 in the first mold 10 and the cavity 30 is evacuated, the molten resin M is injected into the cavity 30 in which the film 40 is set. The resin product 50 in which 40 is inserted can be molded. On the cavity surface 14a that forms the cavity 30 in the first mold 10, an edge 18 that prevents the displacement of the film 40 set on the cavity surface 14a is formed.
[Selection] Figure 6

Description

  The present invention relates to a film insert molding die and a resin product molded thereby.

  2. Description of the Related Art Conventionally, in order to improve the design of an automobile body, a technique for decorating a body exterior part with a light object is already known. As such a technique, for example, a technique is known in which an ABS plating molding which is a separate member is assembled to a resin exterior component serving as a base material. Thereby, the design property of the body of a motor vehicle can be improved simply.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2008-308141 A

  However, in the technique of Patent Document 1 described above, the cost of manufacturing and assembling the ABS plating molding is generated, so that there is a problem that the light object decoration cannot be performed at a low cost. In order to solve this problem, there has been devised a technique for applying a light object decoration to a resin exterior part with a film, that is, a technique for insert-molding a film on a resin exterior part. However, in this device, since the molten resin is injected after the film is set in the mold, if the injection pressure at the time of injection of the molten resin is large, the position of the film set in the mold by vacuuming may be shifted. A new problem occurred.

  The present invention is intended to solve such a problem, and the object of the present invention is to prevent the positional deviation of the film set by evacuation even if the injection pressure at the time of injection of the molten resin is large. A film insert molding die and a resin product molded thereby are provided.

The present invention is for achieving the above object, and is configured as follows.
The invention according to claim 1 includes a first mold and a second mold capable of forming a cavity when the mold is clamped relatively to the first mold. Film insert molding gold that can form a resin product with the film inserted by evacuating it with the film applied to the cavity surface that forms the cavity in the mold, and injecting the molten resin into the cavity where the film is set only by evacuation In the mold, the cavity surface forming the cavity in the first mold is formed with an edge for preventing the displacement of the film set only on the cavity surface.
According to this configuration, even if the injection pressure at the time of injection of the molten resin is large, it is possible to prevent the positional deviation of the film set on the cavity surface forming the cavity in the first mold.

The invention according to claim 2 is the mold for film insert molding according to claim 1, wherein the evacuation for setting the film in the first mold is performed from the base of the edge. It is the structure characterized by having.
According to this configuration, even if a vacuum trace remains on the film, the remaining trace is located at the edge of the film. Therefore, it is difficult to make the trace of vacuuming conspicuous in the finished resin product.

Moreover, invention of Claim 3 is a metal mold | die for film insert molding in any one of Claims 1-2, Comprising: The cavity in a 1st metal mold | die is formed through the nest | insert. It is the structure characterized by these. According to this configuration, when the insert is replaced, it is possible to cope with a design of a resin product that is not provided with a film.
Moreover, invention of Claim 4 is the resin product shape | molded by the metal mold | die for film insert molding in any one of Claims 1-3. According to this, the resin product which has the effect in any one of Claims 1-3 can be shape | molded.

FIG. 1 is a sectional view of a film insert molding die according to an embodiment of the present invention. FIG. 2 is a diagram showing a process of molding a resin product in which a film is inserted using the film insert molding die of FIG. FIG. 3 is a diagram showing the next step of FIG. FIG. 4 is a diagram showing the next step of FIG. FIG. 5 is a diagram showing the next step of FIG. FIG. 6 is a diagram showing the next step of FIG. FIG. 7 is a diagram showing the next step of FIG. FIG. 8 is a diagram showing the next step of FIG. FIG. 9 is a diagram showing the next step of FIG. FIG. 10 is a diagram showing the next step of FIG.

  Hereinafter, the form for implementing this invention is demonstrated using FIGS. First, a film insert molding die 1 according to an embodiment of the present invention (hereinafter simply referred to as “molding die 1”) will be described with reference to FIGS. The molding die 1 includes a first die 10 that is a fixed die, and a second die 20 that is a movable die that can be clamped and opened with respect to the first die 10. It is configured.

  The first mold 10 has a recess 12 into which the insert 14 can be fitted. The first mold 10 and the second mold 20 are a resin product 50 having a desired shape when the second mold 20 is clamped with respect to the first mold 10 in which the insert 14 is fitted. Is formed so as to have a moldable cavity 30. Further, an edge 18 having a raised shape is formed at the edge of the recess 12 of the first mold 10. When the edge 18 is thus formed, a groove 52 (not shown in FIGS. 1, 2 and 5, see FIG. 10) can be formed in the resin product 50 to be molded.

  The first mold 10 is formed to have a suction port 16 between the recess 12 and the insert 14 when the insert 14 is fitted into the recess 12. If formed in this way, the suction port 16 is located at the base of the edge 18. Further, the first mold 10 is provided with a vacuuming device (not shown) so as to be connected to the suction port 16.

  The first mold 10 is provided with an injection molding machine (not shown) that can inject the molten resin M into the cavity 30. The molding die 1 is composed of the first die 10 and the second die 20.

  Next, with reference to FIGS. 1-10, the procedure which shape | molds the resin product 50 which inserted the film 40 which comprises the light effect decoration of a plating tone using the molding die 1 mentioned above is demonstrated. First, from the state shown in FIG. 1, the operator performs an operation of fitting the insert 14 into the recess 12 of the first mold 10 (see FIG. 2). If the insert 14 is originally fixed to the first mold 10, this work need not be performed. Next, from the state shown in FIG. 2, the operator performs an operation of applying the film 40 to the cavity surface 14a of the insert 14 fitted in the first mold 10 (see FIG. 3).

  Next, from the state shown in FIG. 3, the operator performs an operation for operating the vacuuming device. Then, since the space between the film 40 and the cavity surface 14 a becomes vacuum from the suction port 16 of the first mold 10, the film 40 is adsorbed by the cavity surface 14 a of the insert 14. (See FIG. 4). Then, the operator performs an operation of clamping the second mold 20 (see FIG. 5).

  Next, from the state shown in FIG. 5, the operator performs an operation of injecting the molten resin M into the cavity 30 (see FIGS. 6 to 7). Next, from the state shown in FIG. 7, the operator performs an operation for cooling and solidifying the injected molten resin M. Thereby, the resin product 50 in which the film 40 is inserted is completed (see FIG. 8). Next, from the state shown in FIG. 8, the operator performs an operation of opening the second mold 20 (see FIG. 9).

  Finally, from the state shown in FIG. 9, the operator performs an operation of taking out the finished resin product 50 (see FIG. 10). Thus, the resin product 50 in which the film 40 is inserted can be molded.

  The molding die 1 according to the embodiment of the present invention is configured as described above. According to this configuration, the edge 18 having a raised shape is formed on the edge of the recess 12 of the first mold 10. If the edge 18 is formed in this way, even if the injection pressure at the time of injection of the molten resin M is large, the positional deviation of the film 40 set on the cavity surface 14a of the insert 14 can be prevented. Further, according to this configuration, when the molten resin M is injected into the cavity 30, the injected molten resin gets over the edge 18 (see FIGS. 6 to 7), so that the film 40 set on the cavity surface 14a I can hold it down. Therefore, wrinkles can be prevented from occurring in the film 40.

  Further, according to this configuration, the suction port 16 is located at the base of the edge 18. Therefore, even if a vacuum trace remains on the film 40, the remaining trace is located at the edge of the film 40. Therefore, in the finished resin product 50, it is possible to make the trace of vacuuming conspicuous.

The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.
In the embodiment, the example in which the suction port 16 is formed by sandwiching the insert 14 in the first mold 10 has been described. However, the present invention is not limited to this, and the suction port 16 may be formed in the first mold 10 without sandwiching the insert 14.

  In the embodiment, the example in which the first mold 10 is a fixed mold and the second mold 20 is a movable mold that can be clamped and opened with respect to the first mold 10 has been described. . However, the present invention is not limited to this, and the second mold 20 is a fixed mold, and the first mold 10 is a movable mold that can be clamped and opened with respect to the second mold 20. It does not matter. Of course, both molds 10 and 20 may be movable molds. Moreover, you may install a vacuuming apparatus in both metal mold | dies 10 and 20. FIG.

  Moreover, in the Example, the film 40 demonstrated the example which comprises the light effect decoration of a plating tone. However, the present invention is not limited to this, and it may be a simple film (a normal decorative film that does not perform plating-like light object decoration). In addition, when the insert 14 is replaced, the design of the resin product 50 without the film 40 may be supported.

DESCRIPTION OF SYMBOLS 1 Film insert molding die 10 First die 14a Cavity surface 18 Edge 20 Second die 30 Cavity 40 Film 50 Resin product

Claims (4)

A first mold and a second mold capable of forming a cavity when the mold is clamped relatively to the first mold, and a film is formed on a cavity surface forming a cavity in the first mold Is a mold for film insert molding that can mold a resin product into which a film is inserted by evacuating in a state where the film is applied and injecting a molten resin into a cavity in which the film is set only by evacuation.
A mold for film insert molding, wherein an edge for preventing displacement of a film set only on the cavity surface is formed on a cavity surface forming a cavity in the first mold. The mold for film insert molding according to claim 1,
A mold for film insert molding, wherein the evacuation for setting the film in the first mold is performed from the base of the edge. A mold for film insert molding according to claim 1,
The cavity for a 1st metal mold | die is formed through the nest | insert, The mold for film insert molding characterized by the above-mentioned. The resin product shape | molded by the metal mold | die for film insert shaping | molding in any one of Claims 1-3.

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