JP5220551B2 - Molding method and molding die for vehicle millimeter wave radar cover - Google Patents

Description

  The present invention is a cover that protects a millimeter wave radar that is mounted on a front portion of a vehicle and detects a distance from an obstacle ahead and a relative speed with another vehicle, and is a predetermined cover formed of a metal film. The present invention relates to a method for molding a resin cover in which a design is embedded, and a molding die for molding the resin cover.

  So-called pre-crash safety, which detects the distance and relative speed of an obstacle ahead of the vehicle and predicts the collision between the vehicle and the obstacle and automatically takes safety measures to reduce the impact at the time of the collision.・ The system has already been put into practical use. The pre-crash safety system, when a collision is predicted, implements a so-called brake assist that increases the hydraulic pressure for driving the brake, forcibly applies a brake, or winds up the seat belt to reduce the damage caused by the collision. . In addition, a kind of so-called auto cruising has been put into practical use that reduces the burden on the driver by automatically adjusting the speed while maintaining an appropriate distance from other vehicles ahead. In these techniques, a so-called millimeter wave radar is employed to detect the distance and relative speed with obstacles ahead and other vehicles. The millimeter-wave radar is configured to emit a millimeter-wave radio wave having a frequency of 76 to 77 GHz in front of the vehicle, detect a radio wave reflected from an obstacle ahead of the vehicle or another vehicle, and measure a distance and a relative speed. ing. Therefore, the millimeter wave radar is mounted at the front center of the vehicle so that an accurate measurement value can be obtained. Such a cover for protecting the millimeter wave radar has a colored resin layer so that the radar cannot be seen from the outside so that the design of the vehicle is not impaired, and a transparent resin layer on the cover surface. A predetermined design such as an emblem having a metallic luster is applied to the.

JP 2000-344032 A Japanese Unexamined Patent Publication No. 2000-159039 Japanese Patent No. 3042827

  Patent Document 1 and Patent Document 2 describe a plate-like cover on which a predetermined design is applied by a metal film made of indium. A cross-sectional view of such a cover 70 is shown in the cross-sectional view of FIG. The cover 70 is formed of two layers of a transparent first resin layer 71 made of polycarbonate (PC) or the like and a second resin layer 72 made of a colored and light-shielding resin such as AES resin. It has a plate shape that is curved. A predetermined design, for example, an emblem is formed of a predetermined shallow recess 73 provided on one surface of the first resin layer 71 and a metal film 75 made of indium deposited on the recess 73. Therefore, when the cover 70 is viewed from the direction of the arrow Z <b> 1, a three-dimensional emblem formed of metal appears to be embedded in the first resin layer 71. When indium is vapor-deposited on the resin to a thickness of about 700 mm, the metal film constituting the design surface is formed in a granular shape or a net shape, and a so-called sea-island structure is formed. Since millimeter waves can penetrate a metal film having a sea-island structure, a design made of a metal film does not interfere with millimeter wave radar. A metal film made of tin is also known to have a sea-island structure, and tin can be applied instead of indium.

  Although Patent Document 1 and Patent Document 2 do not describe in detail the manufacturing method for manufacturing the cover 70, the cover 70 is conventionally manufactured as follows. First, primary injection molding is performed with a predetermined mold to obtain a first resin layer 71 as shown in FIG. Next, the first resin layer 71 is taken out from the mold, and is masked by the mask member 76 as shown in FIG. Indium is deposited by a conventionally known vacuum deposition method, sputtering method, or the like. As a result, indium is vapor-deposited in the unmasked recesses 73 and 73 to form metal films 75 and 75. The mask member 76 is removed, and as shown in FIG. 6D, the mask member 76 is inserted into the mold 77 and clamped together with the pair of molds 78. Secondary injection molding in which black resin is injected into a cavity 79 formed between the mold 78 and the first resin layer 71 is performed to mold the second resin layer 72. A cover 70 is obtained.

  Although the cover 70 can be manufactured by the conventional method as described above, problems to be solved are also recognized. For example, a problem is recognized when a metal film is deposited on the first resin layer 71. The first resin layer 71 needs to be masked by a predetermined mask member 76 before vapor deposition, but the masking operation is complicated, and the first resin layer 71 is scratched or soiled during the operation. There is a risk that. In particular, if appropriate masking is not performed, metal is deposited on portions other than the design, resulting in defective products. Therefore, the process of forming the metal film requires skill, and in order to reduce the defective product generation rate, thorough product management is required, resulting in an increase in cost. Furthermore, since the first resin layer 71 is injection-molded in the mold, it is taken out, vapor-deposited by a vapor deposition apparatus, and inserted again into another mold, so that the work is complicated and the production efficiency is low. .

  A method of forming the cover 70 by applying the forming method described in Patent Document 3 is also conceivable. Patent Document 3 describes a molding method in which primary injection molding and secondary injection molding are performed in a pair of molds to obtain a resin molded product having two colors, and if this method is applied, After the first resin layer 71 is obtained by primary injection molding, the cover 70 can be obtained by molding the second resin layer 72 by secondary injection molding without taking it out of the mold. Specifically, it is carried out as follows. A predetermined part 80 constituting an emblem is obtained by injection molding with a predetermined mold in advance, and the part 80 is taken out of the mold and subjected to indium vapor deposition by a vapor deposition apparatus. FIG. 7A shows a component 80 having a metal film 81 manufactured in advance by another process in this way. As shown in FIG. 7 (a), a part 80 is inserted into a predetermined portion of the convex portion 83a of the movable mold 83, and the convex portion 83a is aligned with the concave portion of the fixed mold 84. Clamp with. A resin made of polycarbonate is injected into the cavity 85 formed in the mold 83, 84, and the first resin layer 71 is obtained by primary injection molding. As a result, the component 80 is embedded in the first resin layer 71, and the design made of the metal film 81 is embedded in the first resin layer 71. Next, the movable mold 83 is opened with the first resin layer 71 left in the fixed mold 84. The movable mold 83 is slid to a position where the concave portion 83b of the movable mold 83 and the concave portion of the fixed mold 84 face each other, and the mold is clamped as shown in FIG. Secondary injection molding is performed in which AEB resin is injected into the cavity 86 formed in the molds 83 and 84. In this way, it is not necessary to perform special masking when indium is vapor-deposited on the component 80, so that the member is not contaminated with metal during vapor deposition. Furthermore, since it is not necessary to take out the first resin layer 71 from the mold between the primary injection molding and the secondary injection molding, the incidence of defective products is low and the cover 70 is likely to be molded at low cost. However, there are problems. The melting point of indium is about 156 ° C., which is lower than the temperature at the time of injection of resin made of polycarbonate of about 230 ° C. Therefore, as shown in FIG. 7A, when the first resin layer 71 is formed, if the molten resin injected at a high pressure flows at a high speed as indicated by the arrow Z2, the metal film 81 Melts and flows together with the molten resin, and the design such as the emblem is deformed or blurred and blurred. Since the melting point of tin is about 232 ° C., which is higher than the melting point of indium, it is relatively difficult to melt if the metal film is made of tin. However, even if the metal film is formed of tin, the resin instantaneously becomes high temperature due to frictional heat when the molten resin flows in a narrow mold, so that the design of the emblem or the like can be achieved by melting the metal film. It will blur. Therefore, the molding method described in Patent Document 3 cannot be employed as the molding method for the cover 70.

  An object of the present invention is to provide a method for forming a cover for a vehicle millimeter-wave radar and a molding die that solve the above-described conventional problems or problems. When forming a millimeter-wave radar cover made of a resin layer of two colors embedded with a design made of a metal film of a low melting point metal such as tin or tin, the design is not deformed or bleeds, and the metal film is deposited. There is no need for special masking, and there is no need to take out the semi-molded product from the mold between the primary injection molding and the secondary injection molding. It aims at providing the shaping | molding method which can shape | mold, and aims at providing the shaping | molding die which can implement such a shaping | molding method.

In order to achieve the above object, the present invention comprises a transparent first resin layer and a colored second resin layer. The first resin layer comprises a metal film and has a predetermined design such as an emblem. In the method of molding the cover of the embedded millimeter wave radar device for vehicles, the emblem or the like is injection molded as a resin part in advance, and a design part is obtained by vapor-depositing a metal film from indium or tin on the resin part, A design part is inserted into a pair of molds provided with a moving core and clamped, and the moving core is retracted to increase the capacity of the cavity. 1 molten resin is injected, and the movable core is driven forward to form a first resin layer having a design. Then, the first resin layer is left open in one mold, the mold is opened, the other mold is slid and clamped, and the first resin layer and the recess provided in the other mold are The second molten resin is injected into the cavity formed in step (1) to form the second resin layer.

That is, in order to achieve the above object, the invention described in claim 1 has at least a transparent first resin layer and a colored second light-shielding resin layer, and is made of a metal film and has a predetermined In the method for forming a cover of a millimeter-wave radar device for a vehicle, in which a design having a shape is embedded inside and the design can be seen through the first resin layer, When molding the resin layer and the design, a resin part having the predetermined shape is obtained in advance by injection molding, and a metal film having a sea-island structure is formed on the surface of the resin part from indium or tin. A part is obtained, the design part is inserted into a pair of molds provided with a moving core, the pair of molds are clamped, and the moving core is retracted to be formed in the pair of molds. Increase the capacity of the cavity In this state, a predetermined amount of the first molten resin is injected while leaving an unfilled portion in the cavity, and the movable core is driven forward to disappear the unfilled portion in the cavity. The metal film of the component is embedded in the first resin, and the first resin layer to which the design is applied is formed. According to a second aspect of the present invention, in the molding method according to the first aspect, the second resin layer is molded by molding the first resin layer to which the design has been applied, and then the pair of molds. The mold is opened while leaving the first resin layer in one of the molds, and the other mold is slid to form a predetermined recess provided in the other mold and the first resin layer. The pair of molds are opposed to each other, and the second molten resin is injected into a cavity formed by the concave portion and the first resin layer and molded. According to a third aspect of the present invention, in the molding method according to the first or second aspect, the metal film is made of indium or tin and is formed by vapor deposition to a thickness of 300 to 900 mm. According to a fourth aspect of the present invention, in the molding method according to any one of the first to third aspects, the first resin layer is made of polycarbonate resin, and the second resin layer is made of ABS resin or It is configured to be molded from AES resin. The invention according to claim 5 is a molding die for molding a cover of a millimeter wave radar device for a vehicle by the molding method according to any one of claims 1 to 4, wherein the molding die is: It consists of a fixed mold, a movable mold, and a moving mold provided between these molds. The fixed mold has a fixed recess, and the moving mold has a moving core inside. When the movable die is slid to the first position and clamped, the fixed-side concave portion, the first concave portion, and the movable core are provided. The first cavity is formed by sliding the moving mold to the second position and clamping the mold, and the second cavity is formed by the fixed side recess and the second recess, and the moving core is Driven forward and backward in the direction of the moving mold parting line When the first cavity is formed, the capacity of the first cavity increases when the moving core is retracted, and the capacity of the first cavity decreases when the moving core is advanced. Configured to be.

As described above, according to the present invention, it is composed of a transparent first resin layer and a colored second resin layer, and a predetermined design such as an emblem is embedded in the first resin layer. In a method for molding a cover of a millimeter wave radar device for a vehicle, an emblem or the like is injection molded in advance as a resin part, and a metal film is deposited on the resin part from indium or tin to obtain a design part. In the vapor deposition process in which it is easy to adhere, it is not necessary to perform special masking, and it is difficult for defective products to occur, and a design part can be manufactured at a low cost. Furthermore, the design part manufactured in this way is inserted into a pair of molds provided with a moving core and clamped, and the moving core is retracted to increase the capacity of the cavity. Since a predetermined amount of the first molten resin is injected into the cavity and the movable core is driven forward to form the first resin layer with the design, low melting point indium Or even if it is the design which consists of a metal film of a tin, when it embeds in the 1st resin layer, a shape is maintained. That is, the volume of the cavity to be injected is sufficiently large and the injection is performed leaving an unfilled portion, so that a high injection pressure does not directly act on the metal film and the injection speed is sufficiently low. Further, since there is no frictional heat generated when the resin is injected into the narrow cavity at a high injection speed, the indium or tin metal film is difficult to melt. Furthermore, the first resin layer is formed with one mold and the mold is opened, and the other mold is slid and clamped to form the first resin layer and the recess of the other mold. The second molten resin is injected into the cavity to mold the second resin layer, so that it is not necessary to take out the semi-molded product from the mold during the molding process, Since it can be molded in the mold, the incidence of defective products can be reduced, and the cover can be molded at a low cost.

  According to the third aspect of the present invention, the metal film of the design part is made of indium or tin and is formed by vapor deposition to a thickness of 300 to 900 mm. Therefore, the metal film is porous, that is, Since it has a sea-island structure, it can transmit millimeter-wave radio waves and does not interfere with millimeter-wave radar. According to the invention described in claim 4, since the first resin layer is formed from the polycarbonate resin and the second resin layer is formed from the ABS resin or the AES resin, the cover is formed from an inexpensive material. be able to.

  Embodiments of the present invention will be described below. The resin cover of the millimeter wave radar for vehicles molded by the molding apparatus according to the present embodiment includes a first resin layer made of a transparent resin and a second resin layer made of a colored resin having a light shielding property. An emblem having a metallic luster is embedded in the first resin layer. Such a cover actually has a plate shape curved in a convex shape. However, in order to facilitate understanding of the mold structure and each process, the cover is shown as a flat plate in the drawings used for explanation. Also, in the following description, the specific shape of the cover is not described, but it can be formed in the same manner regardless of whether the shape of the cover is flat or convex. is there.

  The cover molding die 1 according to the present embodiment is provided in a conventionally known mold clamping device of an injection molding machine, and is fixed to a fixed die 3 fixed to a fixed platen 2 and a movable platen 5. The movable mold 6 and the movable mold 7 slidably provided on the movable mold 6 are configured. In the fixed mold, a shallow fixed-side recess 9 having a predetermined planar shape is formed in the parting line P, and constitutes a part of a cavity for forming the first resin layer as will be described later. First and second sprues 13 and 14 are provided in the fixed mold 3, and open to the parting line P in the vicinity of the fixed-side recess 9 and the back surface of the fixed mold 3, respectively. Locating rings 15 and 16 are provided in the opening on the back surface of the fixed mold 3, and the nozzles of the first and second injection machines 11 and 12 inserted from the opening formed in the fixed platen 2 are touched. doing.

  A bracket 18 is fixed to the movable mold 6, and the movable mold 7 is fixed to a rod 21 of a first piston cylinder unit 19 provided on the bracket 18. Accordingly, when the first piston cylinder unit 19 is driven, the movable mold 7 slides in the vertical direction in the drawing along the movable mold 6 so that the first position and the second position can be taken. It has become. The moving mold 7 is provided with a relatively deep hole 22 in the parting line P having the same planar shape as the fixed-side recess 9. A moving core 23 is slidably provided inside the hole 22, and the moving core 23 is fixed to a second piston cylinder unit 24 provided inside the moving mold 7. Therefore, when the second piston cylinder unit 24 is driven, the moving core 23 is smoothly driven in the left-right direction in the drawing while contacting the wall surface of the hole 22. The upper surface 26 of the moving core 23 and the wall surface of the hole 22 form a first recess 27, and when the moving mold 7 is slid to the first position, the first recess 27 is a fixed recess. 9 and a cavity for forming the first resin layer. A first gate 33 for guiding the injected resin is provided adjacent to the first recess 27. On the parting line P of the moving mold 7, a shallow second recess 28 having the same planar shape as the fixed recess 9 is formed at a predetermined distance from the first recess 27. The 2nd recessed part 28 comprises the cavity which shape | molds a 2nd resin layer. A second gate 34 that guides the injected resin is opened in the second recess 28. A small-diameter hole is formed in the bottom surface of the second recess 28, and the head of the protruding pin 28 provided in the movable mold 7 is exposed. When the movable mold 7 takes the second position, the bottom of the projecting pin 29 is aligned with the projecting rod 31 provided in the movable mold 6, so that when the projecting rod 31 is driven, the head of the projecting pin 29. Has come to stick out.

A molding method for molding a cover for a millimeter wave radar for a vehicle will be described.
In the cover molding method according to the present embodiment, the emblem having a metallic luster embedded in the first resin layer is manufactured in advance by another process as an insert part, and before the first resin layer is injection molded. Then, it is inserted into the mold and embedded in the first resin layer. A method for manufacturing the emblem part will be briefly described. As is conventionally known, a polycarbonate (PC) resin is injected into a predetermined mold to obtain a resin part 35 having an emblem shape. A cross section of the resin component 35 is shown in the cross sectional view of FIG. The resin component 35 is removed from the mold and placed in a vapor deposition apparatus. A metal film 36 made of indium or tin is formed on the surface of the resin component 35 by a conventionally known method such as vacuum deposition, sputtering, or ion plating. An emblem part 37 is obtained. The metal film is formed to a thickness of 300 to 900 mm. As a result, a predetermined metallic luster is obtained and the metal film has a bolus shape, so-called sea-island structure, and can transmit so-called millimeter-wave radio waves. A cross-sectional view of the emblem component 37 is shown in the cross-sectional view of FIG.

  A method of molding a cover using the cover molding die 1 according to the present embodiment will be described. As shown in FIG. 3A, the movable mold 7 is slid to the first position so that the fixed-side recess 9 and the first recess 27 face each other. The emblem part 37 is set on the upper surface 27 of the core 23. Then, the second piston cylinder unit 24 is driven to move the moving core 23 backward. The mold is clamped as shown in FIG. Then, the first cavity 41 is formed by the fixed-side recess 9, the hole 22, and the core 23. A predetermined amount of the first molten resin 42 made of polycarbonate resin is injected from the first injection machine 11 not shown in the drawing. In the first cavity 41, an unfilled portion having a relatively sufficient capacity remains. As shown in FIG. 3C, the second piston cylinder unit 24 is driven to move the moving core 23 forward. Then, the emblem part 37 is pressed against and embedded in the first molten resin 42 and the unfilled portion in the first cavity 41 disappears. When the first molten resin 41 is solidified, the emblem component 37 is fixed to the first molten resin 41 and the metal film 36 is embedded in the first molten resin. The first resin layer 44 in which the emblem is embedded is obtained.

  As shown in FIG. 3D, the movable core 23 is moved backward to open the mold. Then, the first resin layer 44 remains in the fixed recess 9 of the fixed mold 2. As shown in FIG. 4A, the moving mold 7 is slid to the second position. Then, the fixed-side recess 9 and the second recess 28 face each other. That is, the first resin layer 44 and the second recess 28 face each other. The mold is clamped as shown in FIG. A second cavity 45 is formed by the first resin layer 44 and the second recess 28. A second molten resin 47 made of AEB resin is injected from the second injection machine 12 not shown in the figure by a predetermined amount. Then, as shown in FIG. 4C, the second molten resin 47 is in close contact with the first resin layer 44 to form the second resin layer 48. Waiting for the resin to solidify, the mold is opened as shown in FIG. When the protrusion rod 31 is driven, the protrusion pin 29 protrudes the molded product. A cover 49 composed of the first resin layer 44 and the second resin layer 48 in which the emblem of the metal film 36 is embedded is obtained. Thereafter, the cover 49 is formed in the same manner.

  The method for forming a cover for a millimeter wave radar for a vehicle according to an embodiment of the present invention is not limited to the above embodiment, and can be implemented in various forms. For example, although the moving core 23 is described as being provided in the moving mold 7, it may be provided in the fixed mold 2. In this case, the hole 22 is formed as a shallow hole, the emblem part is set in the hole 22, the mold is clamped, the moving core is retracted to increase the capacity of the cavity, and the first molten resin is injected. Will do.

  Predetermined feet may be provided on the emblem part so that the position of the emblem part inserted into the mold does not shift when the first molten resin is injected. In the cross-sectional view of FIG. 5A, an emblem part 37 'provided with legs 51, 51 is shown. As shown in FIG. 5A, holes 52 and 52 are provided in the moving core 23, and the legs 51 and 51 are inserted into the holes 52 and 52. Then, even when the first resin layer 44 is molded, the position of the emblem part 37 ′ is not shifted. When the first resin layer 44 is formed, the legs 51, 51 of the emblem component 37 'are cut as shown in FIG. As shown in FIG. 5D, the second resin layer 48 is injection-molded to obtain a cover 49.

1 is a front view schematically showing a cover molding die and a molding apparatus of a millimeter wave radar for a vehicle according to an embodiment of the present invention. It is sectional drawing which shows the design components embedded in the cover of the millimeter wave radar for vehicles, The (a) is a resin part obtained by injection molding, (b) is a metal film deposited on the resin part. It is sectional drawing which shows each cross section of the emblem component obtained by this. It is a figure which illustrates typically each process which forms a cover of a millimeter wave radar for vehicles using a mold for cover formation of a millimeter wave radar for vehicles concerning an embodiment of the invention, ( A) shows a state in which a design part is inserted in the mold, (b) shows a state in which the mold is clamped and the first molten resin is injected, and (c) shows a state in which the moving core is driven to FIG. 5D is a cross-sectional view showing a state where the resin layer is molded, and FIG. 4D is a sectional view showing a state where the resin layer is opened with the first resin layer left in the mold. It is a figure which illustrates typically each process which forms a cover of a millimeter wave radar for vehicles using a mold for cover formation of a millimeter wave radar for vehicles concerning an embodiment of the invention, ( A) shows a state where the movable mold is slid to the second position, (b) shows a state where the mold is clamped, and (c) shows a state where the second resin layer is molded. These are sectional views each showing a state in which the mold is opened and the cover of the molded product is protruded. It is a figure which illustrates typically each process of the formation process concerning other embodiments of the present invention, the (a) is a design part, the (a) is a design part inserted in a movable core, FIG. 4 is a cross-sectional view showing a state in which the resin layer is injection-molded, in which (c) shows the first resin layer and (d) shows the cover of the molded product. FIG. 2 is a diagram schematically showing a cover for a millimeter wave radar for a vehicle and a conventionally well-known cover manufacturing method, wherein (a) shows a cover for a millimeter wave radar for a vehicle, and (a) shows a first part constituting the cover. 1 is a state in which a metal film is deposited on the first resin layer, and (d) the mold is clamped by inserting the first resin layer into the mold. It is sectional drawing which shows a state typically, respectively. It is a figure which shows each process of shape | molding the cover of the millimeter-wave radar for vehicles by the shaping | molding method as described in a patent document, The (a) inserts a design component in the mold, (a) inserts the design component in a metal mold | die. And (c) is a cross-sectional view schematically showing a state in which the mold is clamped to inject the second resin layer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover molding die 2 Fixed plate 3 Fixed die 5 Movable plate 6 Movable die 7 Moving die 9 Fixed side recessed part 11, 12 First and second injection machines 22 Hole 23 Moving core 27, 28 Recess 36 Metal film 37 Emblem component 41 First cavity 42 First molten resin 44 First resin layer 45 Second cavity 47 Second molten resin 48 Second resin layer 49 Cover

Claims (5)

A design having at least a transparent first resin layer and a colored and light-shielding second resin layer, which is made of a metal film and has a predetermined shape, is transmitted through the first resin layer. In the method for forming a cover of a millimeter-wave radar device for a vehicle, the design can be visually confirmed.
When molding the first resin layer and the design,
Obtaining a resin part having the predetermined shape by injection molding in advance, forming a metal film having a sea-island structure from indium or tin on the surface of the resin part, obtaining a design part,
The design parts are inserted into a pair of molds provided with a moving core, the pair of molds are clamped, and the moving core is retracted to form a cavity formed in the pair of molds. In a state where the capacity is increased, a predetermined amount of the first molten resin is injected while leaving an unfilled portion in the cavity, and the moving core is driven forward to disappear the unfilled portion in the cavity. A millimeter-wave radar device for a vehicle, characterized in that the first resin layer to which the design is applied is formed such that the metal film of the design component is embedded in the first resin. Cover molding method.   2. The molding method according to claim 1, wherein the second resin layer is molded by molding the first resin layer on which the design is applied, and then molding the first resin layer on one mold of the pair of molds. The mold is opened leaving the resin layer, and the other mold is slid so that the predetermined recess provided in the other mold faces the first resin layer, and the pair of molds are A cover molding method for a millimeter wave radar for a vehicle, wherein the mold is clamped and a second molten resin is injected into a cavity formed by the recess and the first resin layer.   3. The forming method according to claim 1, wherein the metal film is made of indium or tin and is formed by vapor deposition to a thickness of 300 to 900 mm. Cover molding method.   The molding method according to any one of claims 1 to 3, wherein the first resin layer is molded from a polycarbonate resin, and the second resin layer is molded from an ABS resin or an AES resin. Method for forming millimeter wave radar cover. A molding die for molding a cover of a millimeter wave radar device for a vehicle by the molding method according to claim 1,
The molding die consists of a fixed die, a movable die, and a movable die provided between these dies,
The fixed mold is provided with a fixed concave portion, and the movable mold is provided with a first concave portion and a second concave portion provided with a moving core therein,
When the movable mold is slid to the first position and clamped, the fixed cavity, the first recess, and the movable core form a first cavity, and the movable mold is moved to the second position. When the mold is slid and clamped, the second cavity is formed by the fixed recess and the second recess,
The moving core is driven back and forth in the direction of the parting line of the moving mold, and when the first cavity is formed, when the moving core is retracted, the first A cover mold for a millimeter-wave radar for a vehicle, wherein the capacity of the cavity is increased and the capacity of the first cavity is decreased when the moving core is advanced.

Images