JP2004338328A - Method for manufacturing light and mold for manufacturing light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture an integrally formed light 9 having a light main body 3 and a lens part 4 wherein a reflective surface 14 is formed on the inner surface of the light body 3, in manufacturing the light 9 using a die slide injection process. <P>SOLUTION: This method employs a fixed mold 2 equipped with a vacuum vapor-depositing device 5 and comprises a reflective surface forming process for vacuum vapor-depositing the reflective surface 14 on the inner surface of the main body 3 of the light between a primary injection process for molding the light main body 3 and the lens part 4 and a secondary injection process for integrally fitting the lens part 4 into the light body 3. Thus the light 9 with the reflective surface is manufactured . <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to a technical field of a manufacturing method of a housing such as a front lamp, a blinker (including a side blinker), a tail lamp and the like, and a die for molding the housing mounted on a vehicle or the like.
[0002]
[Prior art]
In general, in this kind of housing, a housing body in which a light source (bulb, bulb, light emitting diode, etc.) is assembled and a lens portion formed of a translucent resin material are abutted and the abutting surface is adhered. A die slide injection method is known as a manufacturing method of such a device (Patent Document 1). In this product, the primary product 燈 body and lens part are injection molded with the movable mold and fixed mold facing each other, and then the movable mold is slid to match each primary product. Mold matching is performed, and a resin material is secondarily injected into a butt portion between primary products to integrally mold the casing.
[0003]
[Patent Document 1]
Japanese Examined Patent Publication No. 2-38377 [0004]
[Problems to be solved by the invention]
By the way, in some cases, the die slide injection method is used in order to increase the amount of light and to secure a wide irradiation range, by making the inner surface of the main body into a mirror state as a reflecting surface (reflector). However, it has not been proposed to make the inner surface of the cocoon body a reflective surface. After forming the reflecting surface by using the technique, it is set again on the mold and the butt portion of the primary product is secondarily injected to unify the eyelid body and the lens portion.
Today, however, the lens cut surface has been reduced in the lens part, and the inner surface (reflective surface) of the heel body has been well-understood. In particular, the reflective surface has fingerprints and scratches. In this case, since these can be seen from the outside through the lens part, it becomes a defective product, and therefore it is necessary to be careful in handling the body body after forming the reflecting surface, so that the workability is poor and the yield is low. There is a problem to be solved by the present invention.
[0005]
[Means for Solving the Problems]
The present invention was created with the object of solving these problems in view of the above circumstances, and the invention of claim 1 is directed to the movement of the mold surfaces in the opposite direction and along the surface direction. A first abutting step comprising a first mold and a second mold configured to be moved, and abutting the mold surface for the heel body and the mold surface for the lens part respectively formed on the two molds; , The primary injection process of injection molding each of the collar body and the lens part, and the molds face each other so as to face the reflective surface forming means provided on the second mold side the collar body supported by the first mold A secondary abutting step, a reflective surface forming step of forming a reflective surface on the inner surface of the collar body by the reflective surface forming means, a collar body supported by the first mold, and a lens portion supported by the second mold A tertiary matching process for matching the molds so that they face each other, A light member manufacturing method characterized in that a secondary injection step of integrating the 燈本 body and a lens unit a butt face between the body and the lens unit secondary injection to.
And by doing in this way, it becomes possible to easily manufacture a housing with a reflecting surface formed in the process of a series of movements by die slide injection, so that the body is taken out and a reflecting surface is separately formed. There is no need.
According to a second aspect of the present invention, in the first aspect, the first mold is a movable mold and the second mold is a fixed mold. The means will be on the stationary side with no movement.
The invention of claim 3 is characterized in that, in claim 1, there is an assembling step of incorporating necessary members such as a valve and a terminal between the third butting step after the reflecting surface forming step. By doing so, it can avoid that it becomes a reflective surface to a required member.
According to a fourth aspect of the present invention, in the first or third aspect of the present invention, there is a step of incorporating a covering member that covers a portion of the inner surface of the bag main body that does not form the reflective surface between the secondary injection step after the primary injection step. In this way, it can be avoided that the entire inner surface of the bag body becomes a reflecting surface and the insulation is impaired.
The invention of claim 5 is characterized in that, in claim 4, there is a step of removing the covering member during the tertiary abutting step after the reflecting surface forming step. The member can be surely removed.
The invention of claim 6 is characterized in that, in claim 4, when there is a necessary member assembling step, the necessary member assembling step is performed before and after the covering member removing step. Accordingly, it is possible to easily remove the covering member and incorporate necessary parts.
The invention of claim 7 is used in an injection molding machine for manufacturing a casing, and molds the main body and the lens part separately by primary injection, and a butt portion between the main body and the lens part by secondary injection. A mold for connecting and integrating, the mold is a first mold formed with a concave mold surface forming the outer surface side of the bag body and a convex mold surface forming the inner surface of the lens part; A second mold having a convex surface forming an inner surface of the heel body and a concave surface forming an outer surface of the lens portion, and the second mold includes an inner surface of the heel body. A mold for molding a housing is characterized in that a concave surface for accommodating a reflecting surface forming means for forming a reflecting surface is formed.
And by doing in this way, the housing in which the reflective surface was formed can be reliably manufactured in a series of processes using an injection system.
The invention of claim 8 is characterized in that, in claim 7, the first mold is a movable mold and the second mold is a fixed mold.
According to a ninth aspect of the present invention, in the seventh or eighth aspect, the concave surface in which the reflecting surface forming means is accommodated is formed between the convex surface for forming the heel body and the concave surface for forming the lens unit outer surface. By doing so, the parallel movement of the mold to each step of primary injection, reflection surface formation, and secondary injection becomes the same direction, and the moving structure is simplified Will be converted.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. In the drawings, 1 is a movable mold (first mold), 2 is a fixed mold (second mold), and the movable mold 1 can be moved away from and in contact with the fixed mold 2. At the same time, it is configured to move in a direction along the surface (parallel movement) with respect to the fixed mold 2 in a state of being separated from the fixed mold 2, but the details of the moving mechanism are described in the conventional die slide injection. The technique used is omitted because it can be adopted. Since the movement of the mold may be relative, the first mold may be fixed and the second mold may be moved, or of course, both may be moved. . Further, the movement is not limited to the parallel movement in the linear direction as long as the movement is in the direction along the surface, and may be a rotational movement around the axis.
[0007]
The movable mold 1 is formed with a concave mold surface 1a for forming the outer surface of the bag main body 3 and a convex mold surface 1b for forming the inner surface of the lens part 4, respectively, while the fixed mold 2 Are formed with a convex surface 2a for forming the inner surface of the bag main body 3 and a concave surface 2b for forming the outer surface of the lens portion 4, respectively, and further accommodates a vacuum deposition apparatus 5 ( The concave surface 2c is formed between the convex surface 2a for forming the inner surface of the bag body 3 and the concave surface 2 for forming the outer surface of the lens portion 4. Is formed. The vacuum vapor deposition apparatus 5 is provided with a publicly known device. As a general outline, an intake passage 6 connected to a vacuum pump P, a boat 7 for containing a metal to be deposited (for example, aluminum or chromium), and the boat 7 are heated. The heater 8 is provided.
[0008]
The casing 9 is a side blinker in the present embodiment, and includes a casing main body 3 in which a terminal 10 and a bulb (bulb) 11 are incorporated as necessary parts and formed of a non-translucent resin material. ) It consists of a lens part 4 molded from a resin material, and, as will be described later, after molding the heel body 3 and the lens part 4 in the primary injection process, the movable mold 1 is moved (die slide) to The main body 3 and the lens part 4 are abutted, and the resin material 12 is secondarily injected to the abutting surface part to be integrated to form the housing 9.
[0009]
Next, the manufacturing method of the housing 9 is demonstrated using drawing. FIG. 2 (A) shows that the mold surfaces 1a and 2a forming the collar body 3 and the mold surfaces 1b and 2b forming the lens part 4 are opposed to each other in a state where the mold surfaces 1 and 2 are separated from each other. Then, the movable mold 1 is moved to the fixed mold 2 side from this separated state, and the opposing mold surfaces are matched (first matching process: see FIG. 2B). In this mold-matching state, primary injection is performed, and the bag main body 3 and the lens portion 4 are respectively injection-molded (primary injection process: see FIG. 2C).
[0010]
Thereafter, as shown in FIG. 3 (A), the movable mold 1 moves in a direction away from the fixed mold 2. At this time, the main body 3 is supported on the movable mold 1 side (remaining), The mold is designed so that the lens portion 4 is supported (remains) on the fixed mold 2 side. Next, the movable mold 1 is moved in parallel so that the bag main body 3 faces the vacuum deposition apparatus 5 (see FIG. 3B), and then moves to the fixed mold 2 side to be in a mold matching state (secondary matching). Process: See FIG. 3C). Before the parallel movement, or in the state where the two molds 1 and 2 are separated from each other, a portion where vacuum deposition is not desired, here, the terminal 10 of the main body 3 and the insertion portion 3a of the bulb 11 are covered. In this embodiment, the covering member 13 is incorporated in (inserted into) the main body 3 (covering member assembling step) in the stage before parallel movement. In addition, the concave mold surface 2c that houses the vacuum deposition apparatus 5 is designed so as to cover the butting surface 3b with the lens portion 4 of the bag main body 3 so as not to be vacuum deposited.
[0011]
When the mold body 3 and the vacuum vapor deposition apparatus 5 face each other in a mold-matching state, the air in the concave mold surface 2c is extracted from the intake passage 6 to be in a vacuum state, and is supplied to the boat 7 by the heated heater 8. The molten metal is vaporized, and the exposed inner surface of the bag body 3 is vacuum-deposited to form the reflecting surface 14 (reflecting surface forming step: see FIG. 4A). Next, after moving the movable mold 1 away from the fixed mold 2 (see FIG. 4B), the movable mold 1 is moved in parallel with respect to the fixed mold 2 so that the rod body 3 and the lens unit 4 face each other. (See FIG. 4C). Incidentally, before and after moving the movable mold 1 in parallel, a step of removing the covering member 13 and a step of incorporating the necessary terminals 10 and valves 11 can be performed. In this embodiment, the separation before the parallel movement is performed. The removal step and the incorporation step are executed at the step where the movement is finished.
[0012]
After that, the movable mold 1 is moved to the fixed mold 2 side to butt the heel body 3 and the lens portion 4 (third-order butting step: see FIG. 5A), and between the heel body 3 and the lens portion 4 Resin material 12 is secondarily injected onto the abutting surface (secondary injection process: see FIG. 5B), whereby the main body 3 and the lens portion 4 are integrated to form a reflective surface 14. 9 Then, the movable mold 1 is separated from the fixed mold 2 and the molded housing 9 is taken out (see FIG. 5C). After that, the movable mold 1 is moved as shown in FIG. The translation is made to the initial position, and this process is repeated thereafter.
[0013]
In the embodiment of the present invention configured as described above, when manufacturing the casing 9, the primary injection molding process for forming the casing body 3 and the lens section 4, and the casing body 3 and the lens section 4 are combined. As a result of providing a reflection surface forming step for forming the reflection surface 14 on the inner surface of the bag main body 3 during the secondary injection step for integration, the bag main body once taken out of the mold as in the past 3 is formed, and after that, it is not necessary to take out and re-set the bag main body 3 as in the conventional case where it must be set in the mold again. A reflective surface can be formed on the bag main body 3 to improve work efficiency. Moreover, since the bag body 3 is not taken out and re-set, the reflective surface 14 is not touched with a finger to get a fingerprint or hit with an object, and the generation of defective products can be greatly reduced.
[0014]
Moreover, in this case, since the concave mold surface 2c in which the vacuum vapor deposition apparatus 5 is accommodated is formed in the second mold 2 which is a fixed mold, the vacuum vapor deposition apparatus 5 is provided on the movable mold 1 side. As a result, there is no problem that the molten metal in the boat 7 spills out.
Furthermore, if a reflective surface is formed with a metal film on the portion where the reflective surface is not desired, that is, the terminal 10 and the mounting portion 3a of the bulb 11 with this material, the insulation is impaired and the circuit is short-circuited. Therefore, since the reflecting surface 14 is formed after the portion is closed with the blocking member 13, the casing 9 is free from problems. Moreover, since the terminal 10 and the valve 11 are assembled after removing the blocking member 13 after the reflective surface 14 is formed, all manufacturing operations are smoothly executed in a series of die slide injection processes, and the efficiency is improved. Can be manufactured.
[0015]
Moreover, since the concave mold surface 2c of the vapor deposition apparatus 5 formed on the fixed mold 2 is between the mold surfaces 2a and 2b for forming the bag main body 3 and the lens portion 4, the primary injection process is started. As a result of the moving direction of the movable mold 1 to the reflecting surface forming process and the moving direction of the movable mold 1 from the reflecting surface forming process to the secondary injection process being the same direction, the configuration of the die slide mechanism is simplified. There is an advantage that you can.
[0016]
In addition, this invention is not limited to the said embodiment, Comprising: As a reflective surface formation means, it is not limited to a vacuum evaporation system, For example, the method by a cathode sputtering etc. employ | adopt a normally known reflective surface formation apparatus. be able to. In addition, a terminal or a valve can be retrofitted to the housing.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a side blinker.
FIGS. 2A, 2B, and 2C are process schematic diagrams until primary injection. FIGS.
FIGS. 3A, 3B, and 3C are schematic views of processes up to secondary matching. FIGS.
FIGS. 4A, 4B, and 4C are process schematic diagrams until the eyelid body and the lens portion face each other.
FIGS. 5A, 5B, and 5C are schematic views of processes up to removal of a housing.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Movable metal mold | die 2 Fixed metal mold | die 2c Concave-shaped surface 3 燈 main body 4 Lens part 5 Vacuum vapor deposition apparatus 9 Housing 10 Terminal 11 Valve 12 Resin material 13 secondary injection 13 Cover member 14 Reflecting surface

Claims (9)

A first mold and a second mold configured to perform movement in opposite directions and movement along the surface direction of the mold surfaces;
A primary abutting step of abutting the mold surface for the rod main body and the lens surface for the lens part formed on the molds;
A primary injection process in which the main body and the lens part are respectively injection molded;
A secondary abutting step of abutting the molds so as to face the reflective surface forming means provided on the second mold side with the heel body supported by the first mold;
A reflective surface forming step of forming a reflective surface on the inner surface of the bag body with the reflective surface forming means;
A tertiary abutting step of abutting the molds so that the main body supported by the first mold and the lens part supported by the second mold face each other;
A method for manufacturing a casing, comprising: a secondary injection step of secondarily injecting a butting surface portion between the main body and the lens portion to integrate the main body and the lens portion. 2. The method of manufacturing a housing according to claim 1, wherein the first mold is a movable mold and the second mold is a fixed mold. 2. The method of manufacturing a housing according to claim 1, wherein there is an assembling step of incorporating necessary members such as a valve and a terminal between the third butting step after the reflecting surface forming step. In Claim 1 or 3, there is a step of incorporating a covering member that covers a portion of the inner surface of the bag body that does not form the reflective surface between the secondary injection process after the primary injection process. Production method. 5. The method of manufacturing a housing according to claim 4, wherein there is a step of removing the covering member during the tertiary matching step after the reflecting surface forming step. 5. The method of manufacturing a housing according to claim 4, wherein when there is a necessary member incorporation step, the necessary member incorporation step is performed before and after the covering member removing step. Used in injection molding machines for manufacturing housings, for forming the main body and lens part separately by primary injection, and connecting and integrating the butting parts with these main body and lens part by secondary injection Mold,
The mold is a first mold on which a concave mold surface that forms the outer surface side of the bag body and a convex mold surface that forms the inner surface of the lens portion are formed;
And a second mold on which a convex surface that forms the inner surface of the main body and a concave surface that forms the outer surface of the lens portion are formed.
A mold for molding a casing is characterized in that the second mold is formed with a concave mold surface for accommodating a reflection surface forming means for making the inner surface of the basket main body a reflection surface. 8. The mold for molding a casing according to claim 7, wherein the first mold is a movable mold, and the second mold is a fixed mold. 9. The concave surface in which the reflecting surface forming means is accommodated is formed between the convex surface for forming the eyelid body and the concave surface for forming the lens unit outer surface. A mold for molding the body.

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