JP2009154345A - Film forming molding, method and apparatus for producing film forming molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily produce a substrate 1 in which an electric circuit is formed from a basic substrate 9 having a basic film 10 applied on its surface. <P>SOLUTION: After the basic substrate 9 is injection-molded, the basic film forming 10 is applied on the surface of the basic substrate 9 by a film forming device 8. Next, molds (child molds) 6c and 7b set on injecting mold surfaces 6a and 7a for molding the basic substrate 9 are made to appear frequently. In this way, on the basic substrate 9, a concave part 2a of two steps having film forming 3 and 4 and a convex part 2b are formed through a level difference surface part 2c having the basic film 10 cut off, to produce the substrate 1 having the electric circuit on each upper surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a film-formed molded body that can be used for a substrate on which an electric circuit is formed or an emblem attached to a vehicle, a manufacturing method thereof, and a manufacturing apparatus.

Conventionally, when a film is formed on the surface of an injection-molded substrate, a plurality of injection molded bodies taken out from an injection mold are carried into a film formation chamber, and after film formation on the surface, the film is taken out. I was trying to do it. However, in this case, not only the work efficiency is poor, but also dust may adhere to the surface or touch a finger during the carrying-in and carrying-out processes. There is a problem.
Therefore, the film forming system is built into the injection mold, and injection molding and film forming are performed in a series of processing steps of forming a film on the surface of the injection-molded base material, which greatly increases work efficiency. In addition, it has been proposed that the defect rate can be significantly reduced by preventing dust from adhering to the film-forming surface or touching it with a finger so that a large cost reduction can be achieved (for example, Patent Documents 1 and 2).
International Publication WO2004-101253 International Publication WO2004-101254

  However, in any of the above, the film is formed on the entire surface. For this reason, for example, in the case where there is an uneven surface portion, the film is formed only on the concave surface portion and the convex surface portion, and between the concave surface portion and the convex surface portion. If you want to manufacture an emblem with a two-dimensional upper and lower three-dimensional feeling without forming a film on the step surface, or if you want to manufacture a substrate for an upper and lower two-stage electric circuit, mask the step surface, etc. It is necessary to prevent film formation, but such masking is cumbersome and cumbersome. In particular, there is a problem that masking is virtually impossible when the shape of the uneven surface becomes complicated or small. There are problems to be solved by the present invention.

The present invention was created in view of the above-described circumstances in order to solve these problems, and the invention of claim 1 is formed on the surface of an injection-molded substrate. The film forming portion of the substrate is formed with at least two steps of concave and convex portions obtained by dividing the film formation through a stepped surface formed by pressing a mold. It is a film-forming molded body.
According to a second aspect of the present invention, there is provided the film-formed molded article according to the first aspect, wherein the film formation is made of a conductive material, and at least one of the concave surface portion and the convex surface portion is an electric circuit.
A third aspect of the present invention is the film forming molded body according to the first aspect, which is an emblem.
According to a fourth aspect of the present invention, there is provided an injection step of injection-molding a base material, a film-forming step of forming a film on the surface of the injection-molded base material, and film formation by pressing a film-forming portion of the base material with a mold And a film forming and dividing step of forming at least two steps of concave and convex portions through the stepped surface portion.
According to the invention of claim 5, there is formed an injection mold surface for injection molding of a base material that is molded with each other, and a film formation mold surface for forming a film on the surface of the molded base material. An apparatus for producing a film-formed molded body comprising a metal mold, wherein at least two steps of concave and convex surfaces are formed on the mold by pressing the film formation portion of the substrate. An apparatus for producing a film-formed molded article, characterized in that a mold for forming through a divided stepped surface portion is provided.

  According to the first, fourth, and fifth aspects of the present invention, it is possible to easily form a film-formed molded body that is formed only on the uneven surface portion and not formed on the stepped surface portion without troublesome masking. It can be manufactured.

  Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes an electric circuit board, which is made of an insulating resin material, and includes a base 2 having a concave surface portion 2 a and a convex surface portion 2 b with a stepped surface portion 2 c interposed therebetween, and Each of the concave surface portion 2a and the convex surface portion 2b is composed of conductive metals applied to the convex surface portion 2b, respectively, and includes film formations 3 and 4 constituting an electric circuit, and a protective film 5 applied to the surface of the substrate 1. . And such a board | substrate 1 is manufactured as follows.

  2 and 3 show an embodiment of the present invention. In this embodiment, 6 and 7 are configured to move relative to each other in a direction perpendicular to and parallel to the mold surfaces facing each other. In the present embodiment, the first mold 6 is a fixed mold and the second mold 7 is a movable mold. May be reversed, or both may be moved.

  In this embodiment, the first mold 6 has a concave injection mold surface 6a for forming the surface side of the substrate 1, and a film forming apparatus (vacuum evaporation) for forming a film on the surface of the substrate 1. A film forming die surface 6b incorporating (internally) 8 is formed, and the second mold 7 is formed on the back surface side of the substrate 1. A concave injection mold surface 7a is formed for forming the injection mold surfaces 6a, 7a, whereas the injection mold surfaces 6a, 7a are formed with respect to the injection mold surfaces 6a, 7a for forming the concave and convex surface portions 2a, 2b. The molds 6c and 7b (hereinafter referred to as “child molds” for distinguishing from the first and second molds 6 and 7) 6c and 7b are provided. In this embodiment, they are provided so as to face each other.

  In this case, first, as shown in FIG. 2A, the sub-molds 6c and 7b do not protrude or dip into the mold surfaces 6a and 7a, that is, are flush with each other. From the posture in which the injection mold surfaces 6a and 7a face each other, the first and second molds 6 and 7 are matched to each other, the mold surfaces 6a and 7a are attached to each other, and a resin material is injected here. The base substrate 9 is formed (see FIG. 2B). Then, the first and second molds 6 and 7 are separated from each other. At this time, the base substrate 9 is designed so as to remain in the second mold 7. In this state, the mold surface 7a of the second mold 7 is moved so that the mold surface 6b of the first mold 6 and the film forming mold surface 6b of the first mold 6 are aligned, and then the surface of the base substrate 9 is formed by the film forming apparatus 8. A basic film 10 made of a conductive metal such as copper, silver, or gold is applied to the (demolded surface from the mold surface 6a) (see FIG. 2C). The basic film 10 is formed so as to have a thickness sufficient to energize electricity.

  Thereafter, the base substrate 9 on which the basic film 10 has been applied is placed in the injection mold surface 6a of the first mold by relative movement of the first and second molds 6 and 7 (FIG. 3A). )reference). Then, the sub mold 7b on the second mold 7 side is moved into and out of the injection mold surface 7a (see FIG. 3B), and the sub mold 7c on the first mold 6 side is moved into the injection mold. Projecting and moving from the surface 6a (see FIG. 3C). As a result, the base substrate 9 on which the basic film formation 10 has been applied is subjected to shearing without being punched, so that the concave surface portion 2a on which the film formation 3 has been applied and the film formation 4 are applied. The convex surface portion 2b is formed through the step surface portion 2c that has not been formed into a film, thereby constituting the substrate 1 on which the upper and lower electric circuits are formed. Incidentally, in the step of forming the stepped surface portion 2c by the child mold, it is necessary that the temperature of the injected resin material is still high and the resin material can still flow by the pressure by the child mold, that is, maintained in a gel state. It is. The protective film 5 is applied when necessary, but it is preferable to apply the protective film 5 after attaching necessary electrical and electronic components after the film-forming dividing step.

  By adopting the embodiment of the present invention configured as described above, the basic film 10 is formed on the surface of the basic substrate 9, and the step in the state in which the basic film 10 is divided by pressing with the sub die 6c. The surface portion 2c is formed, and as a result, the concave surface portion 2a and the convex surface portion 2b on which the conductive film formations 3 and 4 are formed are formed in an insulated state.

  In the case where the present invention is implemented as described above, the film formations 3 and 4 that are insulated from each other and are each formed as an electric circuit are applied, but such film formations 3 and 4 are troublesome at the time of film formation. There is no need for masking, and the stepped surface portion 2c can be formed simply by pressing with the child die 6c, thereby improving workability.

  Needless to say, the present invention is not limited to the embodiment described above, and may be formed as an emblem 11 attached to a vehicle bonnet or the like as in the second embodiment shown in FIG. Can do. In this structure, the concave and convex surface portions 11a, 11b, and 11c are three steps of upper, middle, and lower. And in this case, in order to form the concavo-convex surface portions 11a, 11b, and 11c, the child mold is first pushed into the base substrate that is injection-molded. As in the embodiment, it is flattened without protruding to the back surface. For this reason, a concave space 11f corresponding to the resin material flowing on the back surface side of the base substrate is formed, and this is formed. A resin material is allowed to flow in the space 11f. The emblem formed in this way can provide a three-dimensional concavo-convex surface portion in which the base material itself is exposed on the two step surface portions 11d and 11e. And when using as an emblem, it is preferable to inject a transparent protective material 12 after the film forming and dividing step. In this case, a mold surface for injecting the protective material is formed on the first mold. In addition, after the film-cutting step, if the cut substrate is placed in the protective film injection mold surface and the protective material is injected, the emblem applied to the protective material is manufactured in a series of steps. Workability is improved.

  Moreover, in the said embodiment, although the sub mold | die 6c was provided in the injection mold surface 6a of the 1st metal mold | die for carrying out the injection molding of a base material, it is exclusive for dividing | segmenting film-forming, without being limited to this. This can also be carried out by providing a mold surface and forming a parting die on the mold surface. Further, the immersion mold formed on the second mold side need not have the same shape as the pressing mold formed on the first mold side, and the resin material has fluidity. If this is taken into consideration, the present invention can be carried out even if, for example, a part of the material is flowed.

(A) and (B) are the front view and sectional drawing of the circuit board which are 1st embodiments. (A)-(C) are process drawings which show the manufacturing process of the first half of a circuit board. (A)-(C) are process drawings which show the manufacturing process of the first half of a circuit board. (A) (B) is the front view and sectional drawing of an emblem which are 2nd embodiments.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Board | substrate 2 Base material 2a Concave surface part 2b Convex surface part 2c Step surface part 3, 4 Film-forming 6 1st metal mold | die 6c Child metal mold | die 7 2nd metal mold | die 7b Child metal mold | die

Claims (5)

  A film is formed on the surface of an injection-molded base material, and the film formation site of the base material is divided into at least two parts separated by a stepped surface portion formed by pressing a mold. A film-formed molded body having a stepped concave portion and a convex portion.   The film-forming molded body according to claim 1, wherein the film formation is made of a conductive material, and at least one of the concave surface portion and the convex surface portion is an electric circuit.   The film-formed molded article according to claim 1, which is an emblem.   An injection process for injection-molding the base material, a film-forming process for forming a film on the surface of the base material that has been injection-molded, and a stepped surface portion in which the film formation is divided by pressing the film-forming part of the base material with a mold And a film forming parting step for forming at least two concave portions and a convex portion through the film forming molded body.   A mold having an injection mold surface for injection molding of a base material that has been mold-matched with each other and a film formation mold surface for forming a film on the surface of the molded base material An apparatus for producing a film-formed molded body, wherein the mold is pressed through a stepped surface portion in which film formation is divided into at least two steps of a concave surface portion and a convex surface portion by pressing a film forming portion of a substrate. An apparatus for producing a film-formed molded body, wherein a mold for forming the film is provided.

Images