JP2009023249A - Apparatus for producing injection-molded article, apparatus for producing lamp body, and lamp body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing an injection-molded article which can constitute a partially fabricated item from two kinds of materials, an apparatus for producing a lamp body which can produce the lamp body having a shading region while saving time and labor, and the lamp body which can surely secure the shading region. <P>SOLUTION: The apparatus 50 for producing the lamp body has a mold 56 for injection-molding the lens part and a mold 57 for injection-molding the housing. Each of the lens part and the housing is molded by primary injection. The lamp body is constituted integrally moldably after the molded lens part and the housing are butted against each other by carrying out secondary injection in the butt part. The apparatus 50 is equipped with a movable mold device 14 which carries out primary injection in a mold 56 by forming a depression in a part of the lens part and is constituted to be able to secondarily inject a shading material in the concave sink part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an injection molded body manufacturing apparatus, a casing manufacturing apparatus, and a casing.

Conventionally, various vehicle lamps such as side turn lamps mounted on vehicles and the like are known (see, for example, Patent Document 1). The vehicle lamp includes a lens portion and a housing. Here, in general, the lens portion is formed of a transparent resin material, and light from a light bulb or LED attached to the housing is transmitted through the lens portion to confirm the blinking state of the lamp.
JP 2002-46141 A

  By the way, although the light from the vehicle lamp described above is diffused through the lens portion, the driver may feel dazzled by capturing the light in the field of view. In order to solve this problem, a light shielding region is formed by covering the vehicle lamp with a cover body or attaching a masking tape or the like. However, in the above-described measures, there are problems that the cover body and the masking tape may fall off over time, and it takes time and effort in the manufacturing process.

  The present invention has been made in view of the above circumstances, and an injection-molded body manufacturing apparatus capable of forming one semi-finished product with two types of materials, a casing having a light-shielding region without taking time and effort. It is an object of the present invention to provide a casing manufacturing apparatus that can be manufactured and a casing that can reliably secure a light-shielding region.

  In order to solve the above-mentioned problem, the invention described in claim 1 includes a mold for injection molding a plurality of semi-finished products, and each of the semi-finished products is molded by primary injection and molded. In the manufacturing apparatus of an injection-molded body configured such that after the semi-finished products are brought into contact with each other and secondarily injected into the butted portion so as to be integrally molded, a recessed portion is formed in a part of the semi-finished product in one of the molds. , And a primary injection, and a moving mold apparatus configured to be able to inject another material into the recess is provided.

  The invention described in claim 2 is a housing manufacturing apparatus including a first molding die for injection molding a lens portion and a second molding die for injection molding a housing. The first molding die is provided with a moving mold device configured to form a recessed portion in a part of the lens portion and perform primary injection, and to allow the light-shielding material to be secondarily injected into the recessed portion. It is characterized by having.

  The invention described in claim 3 is configured such that the moving mold device closes a part of the cavity of the lens portion in order to form the recessed portion when the lens portion is primarily injected. It is characterized in that it is arranged so as not to close the cavity when secondary injection is made into the recess.

  The invention described in claim 4 is a casing manufactured by the casing manufacturing apparatus described above, wherein a concave portion is formed in a part of the lens portion, and a light-shielding material is injected into the concave portion. A light-shielding portion is formed in the lens portion.

  The invention described in claim 5 is characterized in that the material of the light shielding portion is made of the same material as that of the housing.

  According to the first aspect of the present invention, when manufacturing a semi-finished product, a concave portion is formed in a part of the semi-finished product, and another material is injected into the concave portion to manufacture the semi-finished product. There exists an effect which can manufacture the injection molded object provided with the semi-finished product comprised with the material of. In addition, it is possible to obtain a desired semi-finished product by forming a recessed part in the device in the manufacturing process of the semi-finished product and pouring an injection material into the recessed part. There exists an effect which can manufacture the injection molded object provided with the made semi-finished product.

  According to the invention described in claim 2, in order to produce a lens part by forming a concave part in a part of the lens part when manufacturing the lens part, and secondarily injecting a light-shielding material into the concave part, There is an effect that it is possible to manufacture a housing including a lens portion in which a light shielding region is reliably secured. Moreover, since a desired lens part can be obtained by forming a concave part in the manufacturing process of the lens part and pouring an injection material into the concave part, a casing having a light-shielding region is manufactured without taking time and effort. There is an effect that can.

  Furthermore, since a housing having a light-shielding portion can be manufactured simply by adding a moving mold device to a conventional manufacturing device for integrally molding a housing, the manufacturing device can be realized without cost. There is an effect that can. In addition, since the housing having the light-shielding portion can be automatically manufactured in the manufacturing apparatus, there is an effect that a high-quality housing can be obtained without touching an operator's hand during the manufacturing.

  According to the invention described in claim 3, since it is possible to configure the casing manufacturing apparatus without complicating the configuration of the moving mold apparatus, it is possible to reduce the cost of the manufacturing apparatus and to take time and effort. There is an effect that can be realized without.

  According to the invention described in claim 4, the light is diffused only in the direction in which the light is required by the light shielding portion formed in a part of the lens portion, and the light is blocked in an area where the light is not required. Can do. In addition, since the light shielding portion is formed as a part of the lens portion, there is an effect that the light shielding region can be reliably ensured.

  According to the invention described in claim 5, since the types of the injection material used for the housing can be reduced, there is an effect that the material cost and the cost for the manufacturing apparatus can be reduced.

Next, an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a description will be given of a case where a vehicle lamp is manufactured using a film forming apparatus.
As shown in FIG. 1, the vehicle lamp 1 includes a lens unit 2 and a housing 4 in which a light bulb 3 is incorporated. The lens unit 2 and the housing 4 are formed as primary products which are half-divided products by primary injection with the movable mold 51 and the fixed mold 52, respectively, and the movable mold 51 is slid to form the inner surface of the housing 4. The movable mold 51 is slid and the primary products are brought into contact with each other, and the resin material is secondarily injected into the butt portion 5 to be integrally molded.

  As shown in FIG. 2, the light bulb 3 is disposed in the hollow portion 6 constituted by the lens portion 2 and the housing 4. A conductive terminal 7 is connected to the light bulb 3. Further, the terminal 7 is disposed in a socket portion 8 formed at a substantially central portion of the back surface 27 of the housing 4. The light bulb 3 can be turned on by supplying electricity to the tip 7 b of the terminal 7 exposed in the socket 8.

  The lens portion 2 has a substantially elliptical shape in plan view, is formed in a bowl shape, and is joined to the housing 4 at the opening peripheral edge portion 2a. Here, a concave portion 2c is formed on a part of the surface 2b of the lens portion 2 (one end in the long diameter direction of the lens portion 2). The concave portion 2c is filled with a light shielding material so that the surface 2b of the lens portion 2 is smooth, and is formed as a light shielding portion 2d. Here, other than the light shielding part 2 d in the lens part 2, for example, it is made of a transparent acrylic resin, and the light shielding part 2 d is made of the same light shielding polycarbonate resin as the material of the housing 4. The light shielding part 2d may be made of a light shielding material different from that of the housing 4.

  On the other hand, the housing 4 is integrally formed with a pedestal portion 21 to which the light bulb (bulb) 3 is attached and a flange portion 22 extending in the horizontal direction (left-right direction) from the outer peripheral edge of the pedestal portion 21. The end portion 22 a of the flange portion 22 is joined to the lens portion 2. In addition, the material which comprises the housing 4 is comprised by polycarbonate resin as mentioned above, for example. The light bulb 3 may be an LED.

  Then, in a state where the lens portion 2 and the housing 4 are abutted against each other, a resin material is secondarily injected into the abutting portion 5 to integrally mold the vehicle lamp 1. Here, the resin material of the abutting portion 5 is made of the same material as that of the housing 4. In the present embodiment, the resin material of the butt portion 5 is made of polycarbonate resin. Note that the abutting portion 5 may employ the same material as the lens portion 2.

Next, the manufacturing apparatus 50 for forming the vehicle lamp 1 into a film will be described.
As shown in FIG. 3, the manufacturing apparatus 50 mainly includes a movable mold 51 and a fixed mold 52. The movable die 51 is formed with a molding die surface 53 for forming the lens portion 2 and the molding die surface 54 for forming the housing 4. The fixed die 52 is provided with the lens portion 2. A mold surface 56 for forming a mold, a mold surface 57 for forming the housing 4 and a film forming mold surface 58 for accommodating the film forming apparatus 40 are formed. The mold surfaces 53, 54, 56, 57 and the film forming mold surface 58 are detachably attached to the movable mold 51 and the fixed mold 52, respectively.

  Here, the moving mold device 14 is provided on the molding die surface 56. The moving mold apparatus 14 is disposed in a space 15 formed in the molding mold surface 56 and the fixed mold 52. The moving mold apparatus 14 includes a moving unit 16 configured to be movable by a motor (not shown), a support unit 17 that supports the moving unit 16, and a drive unit 18 to which the support unit 17 is connected. . The distal end portion 16a of the moving portion 16 is configured to be freely inserted into and removed from a cavity for injection molding the lens portion 2, and the lens portion 2 is injection molded in a state where the distal end portion 16a is disposed in the cavity. Thus, the concave portion 2c is formed in the lens portion 2. Further, after forming the concave portion 2c in the lens portion 2, the resin portion made of a light-shielding material is injected into the concave portion 2c of the lens portion 2 in a state where the tip portion 16a is disposed outside the cavity. The light shielding portion 2d is configured to be formed.

Further, the movable mold 51 is configured such that movement of the molds in the approaching / separating direction and movement along the mold surface can be performed by an actuator (servo motor or cylinder) (not shown).
Further, pipes (valve gates) 75 for supplying an injection material into the cavity when injection molding is performed on each mold surface are provided at various places.

  The film forming apparatus 40 is a known vacuum evaporation apparatus, a film forming mold surface 58, a vacuum pump 41 for evacuating the film forming space, a vacuum channel 43 connected to the vacuum pump 41 via a valve 42, and evaporation. A boat (target) 44 into which a metal (for example, aluminum or chrome) is placed, a heater 45 for heating the boat 44, a power source 46 for the heater 45, and the like are provided.

Next, a film forming apparatus 10 for forming a film for the vehicle lamp 1 will be described with reference to FIG.
As shown in FIG. 4, the film forming apparatus 10 has a manufacturing apparatus 50 disposed in a housing 11. The manufacturing apparatus 50 includes a movable mold 51 and a fixed mold 52. A mold clamping device 70 having a toggle mechanism for clamping the movable mold 51 and the fixed mold 52 is connected to the movable mold 51 of the manufacturing apparatus 50.

  An air conditioner 77 for air conditioning / ventilating the inside of the housing 11 is attached to the upper surface of the housing 11, and an air outlet provided at a lower portion of the air conditioner 77 in an opening 76 formed in the housing 11. 78 is inserted through the casing 11 so that conditioned air can be blown out. An inspection port 12 is appropriately provided on the side surface of the housing 11. For example, the inspection port 12 is provided at a position corresponding to the side surface of the manufacturing apparatus 50 and can be easily opened and closed. Here, the inspection port 12 is preferably of a type that can ensure airtightness.

Further, on the side surface of the housing 11, the vicinity of the position corresponding to the manufacturing apparatus 50 or the like is preferably made of transparent glass or the like so that the inside of the housing 11 can be visually recognized.
In addition, an injection material supply device 81 in which a resin material for injection molding is accommodated, a vacuum pump 41 for film formation, and a power source 46 are disposed in the vicinity of the side portion of the housing 11.

  The mold clamping device 70 includes a drive unit 71 and an arm unit 72. A control unit or the like is accommodated in the drive unit 71 connected to one end of the arm unit 72, and the arm unit 72 is configured to move by a signal from the control unit. A movable mold 51 is connected to the other end of the arm portion 72. When the arm portion 72 is movable, the movable mold 51 is moved together, and the movable mold 51 and the fixed mold 52 can be clamped.

  The injection material supply device 81 is disposed outside the casing 11 and is provided in the middle of the tank 89 that contains the material, the supply pipe 90 that supplies the material to the cavity formed in the mold, and the supply pipe 90. And a valve 91 configured to be able to open and close the supply path. The supply pipe 90 penetrates the casing 11 in the middle thereof, is led into the casing 11, and is connected to a pipe (valve gate) 75 provided in each mold so that the material can be supplied into each cavity. It is configured. The material accommodated in the tank 89 is opened through a supply pipe 90 and a pipe (valve gate) 75 provided in the mold after the valve 91 is opened according to an instruction from a control unit (not shown). It is supplied into the mold cavity and is configured to be capable of primary injection and secondary injection. When injection molding is performed using a plurality of materials, the injection material supply device 81 is provided with a device for each type of material.

  A vacuum pump 41 and a power supply 46 provided in the film forming apparatus 40 are disposed outside the housing 11, and the vacuum pump 41 penetrates the housing 11 in the middle of the vacuum flow path 43 connected thereto, and the housing 11 and is connected to a space for film formation. In addition, a wiring is connected to the power source 46, and the wiring passes through the housing 11 and is connected to the heater 45. Note that the vacuum pump 41 and the power source 46 may be disposed in the housing 11.

  Next, the process of forming the vehicle lamp 1 into a film will be described with reference to FIGS. Note that while the film forming apparatus 10 is in operation, the air conditioner 77 is also operating in conjunction with the inside of the housing 11 as a clean room.

  As shown in FIG. 5 (A), the mold surfaces 53 and 54 of the movable mold 51 are disposed so as to face the mold surfaces 56 and 57 of the fixed mold 52, respectively.

As shown in FIG. 5B, the movable mold 51 is moved in the direction of the fixed mold 52 so that the toggle mechanism functions between the movable mold 51 and the fixed mold 52 by the mold clamping device 70. Clamp the mold. In this state, the material (for example, transparent acrylic resin) constituting the lens unit 2 and the material (for example, polycarbonate resin) constituting the housing 4 are primarily injected. Here, at the time of primary injection, the material supplied from the injection material supply device 81 is supplied to a cavity for molding the lens unit 2 and the housing 4 through a pipe (valve gate) 75.
Further, when the lens part 2 is injection-molded, the tip part 16a of the movable mold apparatus 14 is adjusted so as to be positioned in the cavity. In other words, the acrylic resin constituting the lens unit 2 is not supplied to the portion closed by the tip 16a, and the lens unit 2 in the state in which the concave portion 2c is formed is molded.

  As shown in FIG. 6C, after the primary injection of the lens unit 2 and the housing 4 is completed, the movable mold 51 is moved in the mold opening direction. At this time, the lens unit 2 is designed to remain on the fixed mold 52 side, and the housing 4 is designed to remain on the movable mold 51 side.

  As shown in FIG. 6D, the movable mold 51 is moved in the direction along the mold surface (horizontal direction) so that the molding mold surface 54 (housing 4) is the film forming mold surface 58 of the fixed mold 52. It arranges so that it may face.

  As shown in FIG. 7E, a movable mold 51 is moved in the mold clamping direction to form a molding mold surface 54 on which the housing 4 is molded and a film forming mold surface 58 in which the film forming apparatus 40 is built. After the sealed film formation space is formed, the valve 42 is opened, and the air in the film formation space is extracted from the vacuum flow path 43 by the vacuum pump 41, so that the film formation space is brought into a vacuum state.

  In this state, the film forming material disposed on the boat 44 is melted and vaporized by the heater 45 heated by the power source 46. Then, the surface exposed from the film forming mold surface 58 in the housing 4 is formed by the film forming material made of the vaporized metal material, and the film forming surface 66 is formed. In the film forming process, the member incorporating portion 67 is masked with a masking material (not shown) so that the film forming surface 66 is not formed. For example, aluminum is used as the film forming material.

  As shown in FIG. 7F, after the film formation is completed, the movable mold 51 is moved in the mold opening direction to separate the housing 4 from the film forming mold surface 58.

  As shown in FIG. 8G, the movable mold 51 is arranged so that the molding mold surface 54 (housing 4) on the movable mold 51 side and the molding mold surface 56 (lens portion 2) of the fixed mold 52 face each other. The mold 51 is moved in a direction (horizontal direction) along the mold surface. Then, the light bulb 3 and the terminal 7 are assembled into the member incorporating portion 67 of the housing 4 from a member incorporating device (not shown). In addition, you may perform the timing which incorporates a member, before arrange | positioning in the position where the lens part 2 and the housing 4 oppose.

As shown in FIG. 8 (H), the movable mold 51 is moved in the direction of the fixed mold 52 and clamped. In this clamped state, the concave portion 2c of the lens unit 2 and the lens unit 2 and the housing 4 are fixed. The resin material is secondarily injected into the abutting portion 5 for integral molding. The resin material is supplied from an injection material supply device 81. The resin material supplied here is the same light-shielding polycarbonate resin as the housing 4.
Here, the distal end portion 16a of the movable mold apparatus 14 is moved by a motor or the like (not shown) and is located outside the cavity. In this state, when the resin material is secondarily injected, the resin material is supplied to the recessed portion 2 c and the butting portion 5.

As shown in FIG. 9 (I), the movable mold 51 is moved in the mold opening direction, and the vehicle lamp 1 is taken out by an unillustrated pushing member. At this time, when the butting portion 5 is ejected, the runner portion formed on the side of the vehicle lamp 1 is cut out by a cutting device (not shown). And the movable lamp | ramp 51 is again moved to the state of FIG. 5 (A), The vehicle lamp 1 can be manufactured continuously by repeating the above-mentioned series of processes.
By this method, the vehicle lamp 1 in which the light shielding portion 2d is formed in the concave portion 2c of the lens portion 2 can be obtained.

  According to the present embodiment, the vehicular lamp 1 including the molding die surfaces 53 and 56 for injection molding the lens portion 2 and the molding dies 54 and 57 for injection molding the housing 4 is provided. In the manufacturing apparatus 50, a moving mold configured to form a concave portion 2 c in a part of the lens portion 2 on the molding die surface 56 for primary injection and to allow the light-shielding material to be secondarily injected into the concave portion 2 c. A device 14 was provided.

  Thus, when manufacturing the lens part 2, the concave part 2 c is formed in a part of the lens part 2, and the light shielding material is secondarily injected into the concave part 2 c to manufacture the lens part 2. Thus, the vehicle lamp 1 including the lens unit 2 in which the above is ensured can be manufactured. Further, since the desired lens portion 2 can be obtained by forming the recessed portion 2c in the manufacturing process of the lens portion 2 and pouring the injection material into the recessed portion 2c, the vehicle having the light-shielding region without taking time and effort. Lamp 1 can be manufactured.

  Further, since the vehicular lamp 1 having the light shielding portion 2d can be manufactured simply by adding the moving mold device 14 to the conventional manufacturing apparatus for integrally forming the vehicular lamp 1, the manufacturing apparatus 50 includes It can be realized without cost. Moreover, since the vehicle lamp 1 having the light shielding part 2d can be automatically manufactured in the manufacturing apparatus 50, the high-quality vehicle lamp 1 can be obtained without touching the hands of the workers.

  In addition, the moving mold device 14 is configured so as to close a part of the cavity of the lens unit 2 in order to form the recessed part 2c when the lens part 2 is primarily injected, and the secondary injection is performed on the recessed part 2c. In this case, the cavity is arranged so as not to close the cavity.

  Since it comprised in this way, the manufacturing apparatus 50 of the lamp | ramp 1 for vehicles can be comprised, without complicating the structure of the moving mold apparatus 14, and while being able to reduce the expense concerning the manufacturing apparatus 50, it does not take effort. Can be realized.

  Further, in the vehicle lamp 1 manufactured by the manufacturing apparatus 50 described above, a concave portion 2c is formed in a part of the lens portion 2, and a light-shielding material is injected into the concave portion 2c. The light shielding part 2d was formed.

  Since it comprised in this way, the light-shielding part 2d formed in a part of lens part 2 can diverge light only to the direction which requires light, and can interrupt | block light to the area | region which does not require light. Moreover, since the light shielding part 2d is formed as a part of the lens part 2, a light shielding area can be ensured reliably.

  And the material of the light-shielding part 2d was comprised with the material same as the material of the housing 4. FIG.

  Since it comprised in this way, the kind of injection material used for the lamp | ramp 1 for vehicles can be decreased, and the expense concerning material cost and the manufacturing apparatus 50 can be reduced.

  The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, a specific configuration such as the shape of each member constituting the boat is not limited to the above embodiment, and can be changed as appropriate.

  For example, in the present embodiment, the molded lens part and the housing do not have a complicated shape, and have been described in the case of a shape that can be easily removed when extruded from each molding die surface. If there is a shape part and it cannot be removed from the mold surface even if it is extruded from each mold surface, each mold is placed in a direction perpendicular to the direction in which the adjacent mold surfaces are arranged. It may be configured so that it can be divided into two at a substantially central portion in plan view of the surface, and an injection molded part may be taken out.

  Further, in the present embodiment, the description has been given of the case where the moving mold apparatus is used to manufacture the vehicular lamp including the lens unit having the light shielding part. However, the moving part of the moving mold apparatus is always used as the cavity of the lens unit. A vehicular lamp that does not have a general light-shielding portion can be manufactured by injection molding the lens portion in a state of being disposed outside. That is, a lens part rich in variations can be formed depending on the setting of the moving mold apparatus.

It is a perspective view of the lamp for vehicles in the embodiment of the present invention. It is sectional drawing which follows the AA line of FIG. It is a schematic block diagram of the manufacturing apparatus in embodiment of this invention. It is a schematic block diagram of the film-forming apparatus in embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the lamp for vehicles in embodiment of this invention. It is explanatory drawing which shows the continuation of FIG. It is explanatory drawing which shows the continuation of FIG. It is explanatory drawing which shows the continuation of FIG. It is explanatory drawing which shows the continuation of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp (casing) 2 ... Lens part 2c ... Concave part 2d ... Light-shielding part 4 ... Housing 5 ... Butting part 50 ... Manufacturing apparatus 55 ... Molding surface (1st molding die) 56 ... For molding Mold surface (second mold)

Claims (5)

It has a mold for injection molding of multiple semi-finished products,
In the manufacturing apparatus of an injection-molded body configured such that the plurality of semi-finished products are respectively formed by primary injection, the formed semi-finished products are butted together, and then secondarily injected into the butted portion so as to be integrally molded.
One of the molds is provided with a moving mold apparatus configured to form a recessed portion in a part of the semi-finished product and perform primary injection and to inject another material into the recessed portion. An apparatus for producing an injection-molded article. A first mold for injection molding the lens portion and a second mold for injection molding the housing,
The lens part and the housing are respectively molded by primary injection, the molded lens part and the housing are butted together, and then the secondary part is injected into the butted part so as to be integrally molded. In manufacturing equipment,
The first molding die is provided with a moving mold device configured to form a recessed portion in a part of the lens portion and perform primary injection, and to allow the light-shielding material to be secondarily injected into the recessed portion. An apparatus for manufacturing a housing, characterized in that   The moving mold apparatus is configured to close a part of a cavity of the lens portion to form the concave portion when primary injection of the lens portion, and when secondary injection is performed to the concave portion. The casing manufacturing apparatus according to claim 2, wherein the casing is arranged at a position where the cavity is not closed. A casing manufactured by the casing manufacturing apparatus according to claim 2 or 3,
A concave part is formed in a part of the lens part,
A housing characterized in that a light shielding material is injected into the recessed portion, and a light shielding portion is formed on the lens portion.   The casing according to claim 4, wherein a material of the light shielding portion is made of the same material as that of the housing.

Images