JP2003165137A - Lengthy composite molding, and method and apparatus for producing the molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the peeling of the second moldings by joining the second moldings firmly and stably to the first molding in a lengthy composite molding. <P>SOLUTION: The first lengthy molding 21 and the second moldings 30 and 33 joined to the protruded edge constitution parts 28 and 29 of the first molding 21 are provided. By forming the constitution parts 26 and 29 of the first molding 21 to have a smaller outside size than that of the protruded edge parts 28A and 29A of the composite molding 20, an expanded joining part is formed in the vicinity including a joining part. By forming the second moldings 30 and 33 from a material different from the first molding 21 and by injection molding to the constitution parts 28 and 29, the second moldings 30 and 33 are joined to the expanded joining part including the joining part of the constitution parts 28 and 29 and integrally have root parts 31 and 35 constituting the protruded edge parts 28A and 29A of the composite molding 20 with the constitution parts 28 and 29 and slender cushion parts 32 and 36 protruded from the root parts. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elongated first molded body and a second molded body which is joined to a joint portion at a tip of a convex edge forming portion of the first molded body and extends in the longitudinal direction thereof. TECHNICAL FIELD The present invention relates to a long composite molded article including a body, a manufacturing method and a manufacturing apparatus thereof.

[0002]

2. Description of the Related Art Conventionally, characteristics (mechanical characteristics such as strength, hardness and elasticity, chemical characteristics such as chemical resistance, corrosion resistance and heat resistance, electrical characteristics such as electric resistance and conductivity, Alternatively, it is known to form a long composite molded article by combining molded bodies formed of resins having different design characteristics such as color and gloss). Such a long composite molded article is widely used as various products and parts because the characteristics of the resin forming each molded body can be suitably exhibited. For example, a long composite molded article mainly intended to enhance decorativeness by being attached along the edge of the vehicle body or the peripheral edge of the window plate is called a molding, garnish, trim or the like. There are parts. In addition, there are parts called sealing materials, weather strips, gaskets, and the like as long-sized composite molded products whose main purpose is to improve the sealing property. In addition, for example, a second elongated molded body formed of a soft synthetic resin in the longitudinal direction is bonded to the joining portion at the tip of the convex edge portion of the first molded body formed of a hard synthetic resin in a predetermined shape with an adhesive. It is known that a long composite molded article is formed by doing so.

[0003]

By the way, in the above long composite molded article, a second molded body elongated in the longitudinal direction is formed by an adhesive along the joint portion at the tip of the convex edge of the first molded body. The bonding work is troublesome, especially when the shape of the convex edge portion changes two-dimensionally or three-dimensionally, the bonding work requires a lot of labor and time, and the cost becomes high.
Further, there may be a problem that the second molded body is deformed or peeled off in the three-dimensional direction due to poor adhesion or the like to the joint portion of the first molded body. In order to eliminate the trouble of adhering the elongated second molded body in the longitudinal direction to the joint portion of the first molded body with the first molded body set in the molding die, It is conceivable to form a second molded body that is elongated in the longitudinal direction by injection molding with respect to the joint portion at the tip of the convex edge portion. However, in the case where the elongated second molded body is formed in the longitudinal direction of the joint portion at the tip of the convex edge portion of the first molded body, with respect to the joint portion at the tip of the convex edge portion,
In some cases, it may be difficult to form the second molded body without defective molding or to stably bond the second molded body.

In view of the above problems, an object of the present invention is to elongate the second molded body to the first molded body in a stable and strong manner to prevent peeling of the second molded body. Another object of the present invention is to provide a composite molded article, a manufacturing method thereof, and a manufacturing apparatus.

[0005]

In order to achieve the above object, a long composite molded article according to the invention of claim 1 is formed in a long shape and is formed in a part of the outer peripheral portion of its cross section in the longitudinal direction. A long composite molded article including a first molded body having an extending convex edge forming portion and a second molded body which is joined to a joint portion of the convex edge forming portion of the first molded body and extends in the longitudinal direction thereof. The convex edge forming portion of the first molded body is formed smaller than the external dimensions of the convex edge portion of the long composite molded article, so that the extended joint portion is provided in the vicinity including the joint portion. To be The second molded body is
The material is different from that of the first molded body, and is formed by injection molding on the expansion joint including the joint of the convex edge forming portion. Thereby, the convex edge portion of the elongated composite molded article that is joined to the expanded joint portion including the joint portion of the convex edge component portion and the root portion that constitutes the convex edge component portion together with the convex edge portion is stretched from the root portion. The elongated slender cushion portion is integrally formed. Therefore, according to this long composite molded article, the root portion of the second molded body is firmly bonded and integrated in a wide bonded area of the expanded bonded portion including the bonded portion of the convex edge forming portion of the first molded body. Since it is possible to
It is possible to favorably prevent the problem that the molded body is unexpectedly peeled off.

The long composite molded article according to the invention of claim 2 is the long composite molded article according to claim 1,
In the outer peripheral portion of the cross section of the first molded body, convex edge constituent portions are formed at a plurality of locations spaced apart from each other, and the same number of second molded bodies are formed in the plural convex edge constituent portions of the first molded body. The respective root portions of the plurality of second molded bodies are joined together at their respective root portions, and are integrally connected by a connecting portion made of the same material and extending in the width direction. Therefore, according to this elongated composite molded article, the plurality of second molded bodies joined to the expanded joint portion including the joint portions of the plurality of convex edge constituent portions that are separated from each other of the first molded body have their respective root portions. In the above, since the plurality of second molded bodies are more firmly coupled to the first molded body because they are integrally coupled by the coupling portion of the same material that extends in the width direction, the effect of preventing the second molded body from peeling off is great. .

According to a third aspect of the present invention, there is provided a long-sized composite molded article according to the second aspect of the present invention.
On the back surface side of the molded body, a mounting portion that is located between the plurality of second molded bodies and that corresponds to the mounted body integrally projects. Therefore, according to this elongated composite molded article, a plurality of second
A long composite molded product (for example, a window rim molding) can be mounted by forming a first molded body, which has a mounting portion integrally projecting between the molded bodies, and is made of a rigid rigid synthetic resin. It can be stably attached to a body (for example, a vehicle body panel or a window plate), and a plurality of second molded bodies (for example, cushion materials) with respect to an attached body can be held in a desired posture.

The long composite molded article according to the invention of claim 4 is the long composite molded article according to claim 2 or 3, wherein at least one end portion of the first molded body is a terminal covering portion. The end cover portion is made of the same material as the plurality of second molded bodies, and is integrally formed by connecting the end portions of the plurality of second molded bodies. Therefore, according to this long composite molded article, the plurality of second molded bodies are integrally connected by the terminal cover portion provided so as to cover at least one terminal portion of the first molded body, The plurality of second molded bodies can be more firmly bonded to one molded body, and the effect of preventing peeling is further enhanced.

The long composite molded article according to the invention of claim 5 is the long composite molded article according to any one of claims 2 to 4, wherein the long composite molded article is a vehicle body. A vehicle window edge molding that is mounted along a gap between the peripheral wall portion of the window frame portion of the panel and the window plate is configured, and the first molded body configures a molding body of the vehicle window edge molding, Of the plurality of second molded bodies, one second molded body constitutes a cushion member that is joined to the convex edge forming portion on one side of the molding body and comes into contact with the vehicle body panel, and the other second molded body. The molded body constitutes a cushion member that is joined to the convex edge forming portion on the other side of the molding body and is in contact with the window plate. Therefore, according to this long composite molded product, a vehicle window rim molding is constituted by the long composite molded product, and the window rim molding is used to form a gap between the peripheral wall portion of the window frame portion of the vehicle body panel and the window plate. The cushion material as the second molded body, which is joined to the convex edge forming portion on one side of the molding body as the first molded body, can be brought into contact with the vehicle body panel in a state of being mounted along the. Further, it is possible to bring the cushion material as another second molded body joined to the convex edge forming portion on the other side of the molding body into contact with the window plate. As described above, by bringing the cushion materials into contact with the vehicle body panel and the window plate, the cushion materials can be mounted without a gap, and the appearance can be improved. Moreover, since the root portions of the second molded bodies can be firmly joined and integrated in a wide joint area of the expanded joint portion including the joint portions of the convex edge constituent portions of the molding body, durability is also improved. Excel.

The long composite molded product according to the invention of claim 6 is the long composite molded product according to any one of claims 1 to 5, wherein the first molded product is rigid and hard. The second molded body is made of a material, and is made of a soft material that is softer and more elastic than the first molded body, and is elastically deformable in an elongated cushion portion protruding from the root of the second molded body. Therefore, for example, when the vehicle window rim molding is formed of a long composite molded product, the molding main body of the window rim molding can be firmly formed and the cushion material can be held in a desired posture. On the other hand, it becomes possible to give the desired soft elasticity to the elongated cushion portion of the cushion material, and the elongated cushion portion elastically deforms and makes contact with the vehicle body panel or window plate as the mounted body without a gap. Therefore, it is possible to prevent deterioration of appearance.

In the long composite molded article according to any one of claims 1 to 6, the first molded body is preferably a molded body formed of a hard synthetic resin material, but aluminum, zinc,
A die-cast or thixoformed compact of a light alloy such as magnesium can be preferably used. As the second molded body, a thermoplastic elastomer having rubber-like elasticity and elasticity (for example, TPE) or the like can be preferably used.

According to a seventh aspect of the present invention, there is provided a method for producing a long composite molded article, which comprises a first molded body which is long and has a convex edge forming portion extending in a longitudinal direction at a part of an outer peripheral portion of its cross section. When,
A method for producing a long composite molded article, comprising: a second molded body that is joined to a joint portion of the convex edge forming portion of the first molded body and extends in the longitudinal direction thereof; A first molded body having a convex edge forming portion, which is formed smaller than the outer dimension of the convex edge portion of the product and thus has an extended joint portion in the vicinity including the joint portion, is prepared. Then, the first molded body is set in an injection mold corresponding to the second molded body. Then, in a state where the injection molding die is closed, the root portion of the second molded body is provided between the mold portion and the first molded body in an expanded joint portion including a joint portion of the convex edge forming portion. A base portion cavity to be formed, and a cushion portion cavity to form an elongated cushion portion forming a main body portion of the second molded body,
To form a molding cavity that is continuously provided along the longitudinal direction. Then, a molten material is injected into the molding cavity and the root cavity and the cushion cavity of the molding cavity are filled with the molten material, so that expansion bonding including a joint portion of the convex edge forming portion of the first molded body is performed. A second molded body integrally having a root portion joined to the portion and an elongated cushion portion protruding from the root portion is formed. Therefore, according to this method for producing a long composite molded article, the long composite molded article according to claim 1 can be easily produced.

The method of manufacturing a long composite molded article according to the invention of claim 8 is based on the structure as described in claim 8, and is arranged at a predetermined interval in the longitudinal direction of the molding cavity. The molten material is injected from each of the plurality of injection gates, and the root cavity and the cushion cavity of the molding cavity are filled with the molten material. Therefore, according to this method of manufacturing a long composite molded article, the molten material can be injected into the molding cavity from the plurality of injection gates substantially at the same time and filled without forming an unfilled portion. Therefore, a second molded body integrally having a root portion joined to the expanded joint portion including the joint portion of the convex edge forming portion of the first molded body and an elongated cushion portion protruding from the root portion is provided. It can be formed satisfactorily without defective molding.

The manufacturing method of a long composite molded article according to the invention of claim 9 has a structure as described in claim 9. That is, in the first molded body, the convex edge constituent portions are formed at a plurality of positions separated from each other on the outer peripheral portion of the cross section thereof. In a state where the first molded body is set in the injection mold and the mold is closed, a plurality of molding cavities having a root cavity and a cushion cavity along the longitudinal direction are formed in the injection mold. At the same time, a communication passage is formed between the plurality of molding cavities so as to communicate them. Then, the molten material is injected into at least one of the plurality of molding cavities or the communication passage to fill the molding cavity with the molten material, and a part of the molten material is passed through the communication passage to another portion. A root portion joined to an expansion joint portion including a joint portion of a plurality of convex edge constituent portions of the first molded body by flowing and filling the molding cavity, and an elongated cushion portion protruding from the root portion. And a plurality of second molded bodies integrally having and are respectively formed. Therefore, according to this method for manufacturing a long composite molded product, the long composite molded product according to claim 2 and the vehicle window rim molding according to claim 5 can be easily manufactured.

A tenth aspect of the present invention is directed to a method for producing a long composite molded article, which has a structure as described in the tenth aspect. Therefore, by injecting the molten material at the position of the communication passage or in the vicinity thereof, the molten material is melted in the plurality of molding cavities while effectively compensating for the pressure loss caused by the flow resistance when the molten material passes through the communication passage. The material can be well flowed and filled.

The method of manufacturing a long composite molded article according to the invention of claim 11 is based on the structure as described in claim 11. Therefore, according to this method for manufacturing a long composite molded article, the adjacent molding cavities can be communicated by the communication passage through the penetrating portion of the partition wall formed in the first molded body. Therefore, the length of the communication passage is not extended, and the molding cavity is communicated with substantially the shortest dimension, so that the pressure loss (pressure drop) of the molten material can be prevented.

A method of manufacturing a long composite molded product according to the invention of claim 12 is based on the structure as described in claim 12, wherein a synthetic resin molded product or a light metal molded product is used as the first molded product. To use. Therefore, according to this method for producing a long composite molded product, when a synthetic resin molded product is used as the first molded product, there is little temperature drop when the molten material comes into contact with the first molded product, and a long molded product is obtained. The flow of the molten material to the cavity can be maintained smoothly, and the desired second
The molded body can be formed well. When a light metal molded product is used as the first molded product, the first molded product can be thinned, and further a long composite molded product having a metallic luster on a part of the surface (for example, a design surface). Is obtained.

A method for manufacturing a long-sized composite molded product according to a thirteenth aspect of the present invention is the method for manufacturing a long-sized composite molded product according to the seventh aspect, which is an injection gate for injecting a molten material into a molding cavity. To the gate facing portion of the first molded body facing
A guide body having a guide surface that is inclined in a direction that intersects with the injection direction of the molten material at a right angle is provided, and the molten material injected from the injection gate flows along the guide surface and fills the molding cavity. It is configured to be. Therefore, when the molten material is injected from the injection gate to fill the molding cavity, the molten material flows along the inclined guide surface of the guide body and is filled in the molding cavity.
In other words, the flowing direction of the molten material injected from the injection gate intersects with the first molded body at an obtuse angle without intersecting the first molded body at an obtuse angle, so that the flow pressure of the molten material with respect to the first molded body is reduced. As a result, it is possible to prevent the first molded body from being partially deformed during the injection molding of the second molded body with the molten material.

A method for producing a long composite molded article according to a fourteenth aspect of the present invention is the method for producing a long composite molded article according to the thirteenth aspect, wherein the first molded article has a hollow portion. At the same time, a predetermined position of the wall portion forming the hollow portion is a gate facing portion, and a guide body is provided in the gate facing portion. Therefore, since the guide body is provided in the gate facing portion of the first molded body, a distortion such as a sink mark is generated on the surface of the wall portion on the side opposite to the gate facing portion side wall portion of the hollow portion, for example, the design surface. Is prevented.

A method for producing a long composite molded article according to a fifteenth aspect of the present invention is the method for producing a long composite molded article according to the thirteenth or fourteenth aspects, wherein the guide body is the first molded body. It is formed integrally with the portion facing the gate. Therefore, since the guide body is integrally formed in the gate-opposing portion of the first molded body, the thickness of the portion is increased by an amount corresponding to the guide body and the strength is increased. The part of the body facing the gate and its vicinity are prevented from being locally deformed.

A method for producing a long composite molded article according to a sixteenth aspect of the present invention is the method for producing a long composite molded article according to the thirteenth or fourteenth aspects, wherein the guide body is the first molded body. Is formed as a separate body, and the molten material is injected and filled into the molding cavity in a state of being set in the gate facing portion of the first molded body. Therefore, it is possible to form the guide body by selecting a material having the characteristics required for the guide body, and thus, for example, good slidability, heat resistance, and mold release with respect to the molten material corresponding to the second molded body can be obtained. It can exhibit characteristics such as sex. Further, when it is difficult to integrally form the guide body on the first molded body due to the complicated structure of the molding die corresponding to the first molded body, or after the second molded body is formed by the molten material, the clip is formed. This is an effective method when it is difficult to attach the attachment such as. In the latter case, the guide body is removed after forming the second shaped body. Further, when the molten material is injected, the heat of the injected molten material is absorbed in the guide body without directly acting on the gate facing portion of the first molded body, and is conducted through the guide body. . Therefore, it is possible to prevent a problem that the gate facing portion of the first molded body is excessively heated and deformed by the heat of the molten material.

A method for producing a long composite molded article according to the invention of claim 17 is the method for producing a long composite molded article according to any one of claims 13 to 16, wherein the first molding The width dimension of the guide body with respect to the longitudinal direction of the body is set so as not to fall below the opening width dimension of the injection gate. Therefore, the injection pressure of the molten material injected from the opening of the injection gate can be received in a substantially wide area of the inclined guide surface of the guide body. As a result, the pressure per unit area that acts on the inclined guide surface of the guide body is reduced. Therefore, it is possible to prevent the guide body from being damaged, which in turn is highly effective in preventing the deformation and breakage of the first molded body. Further, when the molten material is injected, the molten material (liquid) is prevented from leaking in the longitudinal direction beyond the guide surface of the guide body, and the molten material (liquid) flows along the guide surface of the guide body. Then, it is filled in the molding cavity.

The method for producing a long composite molded article according to the invention of claim 18 is the method for producing a long composite molded article according to any one of claims 13 to 17, wherein The guide surface is formed as a smooth surface. Therefore, by forming the guide surface of the guide body to be a smooth surface, the molten material flows smoothly without receiving excessive flow resistance on the guide surface of the guide body. As a result, when the molten material is injected, the material pressure acting on the first molded body via the guide body is prevented from excessively increasing.

According to a nineteenth aspect of the present invention, there is provided an apparatus for producing a long composite molded article, wherein the first molded article is formed in a long shape and has a convex edge forming portion extending in a longitudinal direction at a part of an outer peripheral portion of its cross section. An apparatus for manufacturing a long composite molded article comprising: a second molded body that is joined to a joint portion of the convex edge forming portion of the first molded body and extends in the longitudinal direction thereof; A pair of molding dies that perform a mold opening operation are provided. Between the pair of molding dies, there is a convex edge constituent portion in which an expanded joint portion is provided in the vicinity including the joint portion by being formed smaller than the outer dimensions of the convex edge portion of the long composite molded product. The first molded body is set. Then, in a state where the pair of molding dies are closed, a root cavity forming a root of the second molded body is formed between the pair of molding dies and an expansion joint including a joint of the convex edge forming portion. A cushion portion cavity forming an elongated cushion portion forming a main body portion of the second molded body is formed in communication with the root portion cavity. The root cavity and the cushion cavity form a molding cavity corresponding to a second molded body that integrally has the root portion and the elongated cushion portion. Further, at least one of the pair of molding dies is provided with an injection gate for injecting and filling a molten material into the molding cavity. Therefore, the manufacturing method of a long composite molded article according to claim 7 can be easily carried out by using this apparatus for manufacturing a long composite molded article.

[0025]

(First Embodiment) A first embodiment of the present invention will be described with reference to FIGS. In the first embodiment, the case where the long composite molded article is the window frame molding 20 for a vehicle is illustrated. In FIG. 5, which is a perspective view of a part of the vehicle viewed from the front, a window corresponding to a window plate 8 (also called a front window glass) is provided on a front pillar panel 2 and a roof panel 3 as vehicle body panels. The frame part 5 is formed. As shown in FIGS. 1 to 3, the window frame portion 5 is configured to include a peripheral wall portion 7 and a flange portion 6 that protrudes inward from the peripheral wall portion 7 and that constitutes the window opening portion 4. There is. The peripheral wall portions 7 of the left and right side portions of the window frame portion 5 are formed in an inclined shape in which the lower portion is higher and the height is gradually lower toward the upper portion in the height dimension based on the flange portion 6. A dam rubber 9 made of an elastic material is adhered to the window plate 8 which is mounted on the window frame 5 and closes the window opening 4, along the peripheral edge of the back surface thereof. Then, the window plate 8 is fitted into the window frame portion 5, and the dam rubber 9
Is pressed against the outer surface of the flange portion 6 and appropriately elastically deformed, and is fixed to the window frame portion 5 by an adhesive / sealant (not shown).

A window edge molding 20 for a vehicle, which is a long composite molded article, includes a molding body 21 as a first molding body and a cushion material 30 as a second molding body made of a material different from that of the molding body body 21. , 33 and are integrally provided. The window edge molding 20 includes the outer peripheral edge of the window plate 8 and the peripheral wall portion 7 of the window frame portion 5 at the left and right side window frame portions 5 of the upper and lower portions of the window frame portion 5 and the left and right side portions.
It is formed so as to be attachable along a gap S between the and.

As shown in FIGS. 1 to 4, a molding body 21 as a first molded body has a long covering portion 22 which covers substantially the entire space S and has a predetermined width, and the covering portion 22. 22
Is integrally provided with a mounting portion 40 which is continuous in the longitudinal direction on the rear surface side and which is provided in a substantially plate-like shape. Further, the molding body 21 is integrally formed by injection molding, gas injection molding or the like using a hard synthetic resin as a material, or by die casting or thixomolding of a light alloy. Examples of the hard synthetic resin for forming the molding body 21 include ABS resin, PP resin, AES resin, PPO resin, PC resin, PA resin, and alloy resins thereof. The resin material is not particularly limited when the surface of the molding body 21, particularly the exterior design portion of the cover portion 22 is subjected to weather-resistant coating or surface treatment, but when the surface treatment is not performed, the molding body 21 is not limited. AES with excellent weather resistance
It is desirable to form it with resin, PP resin, or the like. On the other hand, when the molding body 21 is a light alloy molded product,
A die cast molded product such as an aluminum alloy, a zinc alloy, or a magnesium alloy or a thixo molded product of a magnesium alloy can be used, and the thickness can be reduced as compared with the case where a molded product of a hard synthetic resin is used. In addition, in the first embodiment,
A hard synthetic resin is used as an example. The cover 22 of the molding body 21 has a cavity 23 between the cover 22 and the back wall 26 integrally formed along the longitudinal direction of the cover 22. Is formed into a hollow shape.

Now, the molding body 21 as the first molded body.
In the outer peripheral portion of the cross section, convex edge forming portions having joint portions for integrally joining the cushion materials 30 and 33 are formed as a second molded body at a plurality of locations separated from each other. In the first embodiment, a convex edge forming portion having joint portions is provided at two left and right positions on the paper surface of FIG. Of these both convex edge components, one convex edge component is
A weir forming portion 28 that protrudes from one end of the back wall 26 of the cover portion 22 of the molding body 21 in the width direction toward the outer surface of the window plate 8.
It is composed by. Further, the other one convex edge forming portion is configured by the convex edge forming portion 29 provided so as to project on the window frame side of the exterior design portion of the cover portion 22. Then, in each of the weir forming portion 28 and the protruding edge forming portion 29, the vicinity including these joints (tip portions) is the outer dimensions of the weir portion 28A and the protruding edge portion 29A of the window edge molding 20 as the final product. The expansion joints are formed by being formed smaller than the above.

As shown in FIGS. 1 to 3, the weir forming unit 28
The cushion material 30 as the second molded body that is joined to the expanded joint portion including the joint portion is a material different from that of the molding body 21, for example, a soft synthetic resin that is softer and more elastic than the molding body 21 (for example, TPE). It is formed by injection molding of a thermoplastic elastomer such as resin. This cushioning material 30 has a root portion 31 having a substantially U-shaped cross section integrally joined to an expansion joint portion including a joint portion of the cough forming portion 28 at the same time when the cushion material 30 is injection-molded, and the root portion thereof. An elongated cushion portion 32 elastically deformed from 31 to the outer surface of the window plate 8 and protruding so as to be in contact therewith is integrally provided. In other words, the weir portion 28A of the window edge molding 20 as the final product is constituted by the weir forming portion 28 of the molding body 21 and the root portion 31 of the cushion material 30 formed in the expanded joint portion including the joint portion. An elongated cushion portion 32 is formed so as to project from the portion 31.

The cushion material 33 as the second molded body to be joined to the expanded joint portion including the joint portion of the convex edge forming portion 29 of the molding body 21 is an injection molding of a soft synthetic resin of the same material as the cushion material 30. Is formed by. The cushion material 33 has a root portion 35 having a substantially U-shaped cross section integrally joined to an expanded joint portion including the joint portion of the convex edge forming portion 29 at the same time when the cushion material 33 is injection molded, and a root portion thereof. There is integrally provided an elongated cushion portion 36 that is elastically deformed to the top of the peripheral wall portion 7 of the window frame portion 5 or the outer surface of the front pillar panel 2 that extends from the portion 35 and is continuous with the top portion so as to come into contact therewith. is doing. In other words, the convex edge portion 29A of the window edge molding 20 as the final product
Is the convex edge forming portion 29 of the molding body 21 and the cushion material 3.
It is constituted by the root portion 35 of No. 3 and is extended from the root portion 35 to form an elongated cushion portion 36.

As shown in FIGS. 3 and 4, the molding body 21
A plurality of connecting portions 37 are integrally joined to the back wall 26 of the cover portion 22 in the width direction across the back wall 26 of the molding body 21 at predetermined intervals along the longitudinal direction thereof. These connecting portions 37 are made of the same material as the cushion materials 30 and 33 and are formed simultaneously with the injection molding of the cushion materials 30 and 33. Then, each connecting portion 37 has a mounting portion 40.
The through portions 46 (through holes) of the mounting portions or partition walls of the present invention are respectively penetrated, and both ends thereof extend to the root portions 31 and 35 of the cushioning materials 30 and 33 to form an integral shape. There is. By this, both cushion materials 3
0 and 33 are integrally connected. Further, in the first embodiment, as shown in FIG. 4, a terminal cover portion 38 is integrally formed on the lower terminal portion 21a of the molding body 21 so as to cover the terminal portion 21a. The terminal covering portion 38 is formed by injection molding of a soft synthetic resin of the same material as the cushion materials 30 and 33, and the terminal portions of the cushion materials 30 and 33 are connected to be integrally formed. In the cushion material 30, a clear boundary is not necessarily required between the cushion portion 32 and the root portion 31, and it is possible to prevent the weir forming portion 28 made of hard synthetic resin from directly contacting the window plate 8. The portion to be formed is the cushion portion 32, the other portion is the root portion 31, and the same applies to the cushion material 33.

Further, in the first embodiment, FIG.
As shown in FIG. 4, on the back wall 26 of the cover portion 22 of the molding body 21, a mounting portion 40 having a substantially plate-like shape is located between both cushion members 30 for mounting the window edge molding 20 on the vehicle body panel. (Corresponding to the mounting portion or partition of the present invention)
Are projected integrally. Then, a penetrating portion 46, which is filled with a part of the soft synthetic resin for forming the connecting portion 37, is formed at a predetermined position of the mounting portion 40. As shown in FIGS. 1, 2 and 4, the mounting portion 40 includes a plurality of first parts.
The mounting portions 41 and the second mounting portions 43 are alternately arranged in the longitudinal direction, and the continuous portion 45 that connects the first mounting portion 41 and the second mounting portion 43 in an integrally continuous manner is provided. It is formed in a meandering shape. First attachment portions 41 are provided at a total of three locations near both ends of the attachment portion 40 in the longitudinal direction and in the middle portion, and second attachment portions 43 are provided at two intermediate portions of each first attachment portion 41.
Is provided. When the window edge molding 20 is attached along the gap S between the outer peripheral edge of the window plate 8 and the peripheral wall portion 7 of the window frame portion 5, the second attachment portion 41 is attached to the second attachment portion 41 rather than the first attachment portion 41. The portion 43 is configured to be arranged at a position close to the outer peripheral edge of the window plate 8.

As shown in FIGS. 1 and 4, the plurality of first mounting portions 41 of the mounting portion 40 can be engaged with the first mounting member 50 that is locked to the peripheral wall portion 7 of the window frame portion 5. The square hole-shaped engaging portions 42 are formed respectively. In addition, as shown in FIGS. 2 and 4, the plurality of second mounting portions 43 of the mounting portion 40 have a rectangular hole shape that is engageable with the second mounting tool 60 locked to the outer peripheral edge of the window plate 8. Engaging portions 44 are formed respectively. The first mounting member 50 is made of, for example, a spring steel plate, and has an insertion groove into which the first mounting portion 41 is inserted, and is formed into a substantially U-shaped cross section. Of the both side plate portions of the first mounting member 50, one side plate portion located on the side of the window plate 8 is engaged with the square hole-shaped engaging portion 42 of the first mounting portion 41 to prevent coming off. Locking claw 5
6 is formed in a cut-and-raised shape. Further, the first mounting member 50 is adhered and fixed to the peripheral wall portion 7 of the window frame portion 5 in advance by a double-sided adhesive tape or the like on the side plate portion on the side of the window frame portion. In addition, the second attachment 60 has a second main body portion.
The mounting portion 43 has an insertion groove into which the mounting portion 43 is inserted and has a substantially U-shaped cross section and is made of a highly elastic synthetic resin or the like.
Of the both side plate portions of the second mounting member 60, one side plate portion located on the side of the window plate 8 is engaged with the square hole-shaped engaging portion 44 of the second mounting portion 43 to prevent coming off. A locking claw 66 is formed. In addition, a pair of arm portions that are elastically deformable and extend from the both ends of the side wall portion on the window plate 8 side toward the peripheral edge portion of the window plate 8 in the second attachment 60 in a substantially C-shape. (A portion indicated by a chain double-dashed line in the engaging portion 44 in FIG. 4). And
Window plate side locking portions 68 are formed at the tip ends of the pair of arm portions so as to prevent them from coming off by engaging with the back surface and the peripheral end surface of the peripheral edge portion of the window plate 8, respectively.

The window edge molding 20 according to the first embodiment is constructed as described above. Therefore, when the window edge molding 20 is attached along the gap S between the outer peripheral edge of the window plate 8 mounted on the window frame portion 5 of the vehicle body panel and the peripheral wall portion 7 of the window frame portion 5, the window edge molding is previously performed. The first mounting member 50 and the second mounting member 60 are mounted on the first mounting portion 41 and the second mounting portion 43 of the molding 20, respectively, and the window edge molding 20 is pressed toward the gap S to mount the molding. Note that FIG.
As shown in, the first mounting member 50 is adhered and fixed to the peripheral wall portion 7 of the window frame portion 5 in advance via the double-sided adhesive tape on the side plate portion on the window frame portion side. By the pressing, the engaging portion 42 of the first mounting portion 41 is locked to the locking claw 56 of the first mounting tool 50 to be fixed. On the other hand, as shown in FIG. 2, the window plate side locking portions 68 of the pair of arms of the second attachment 60 are elastically engaged with the rear side edge portions of the outer peripheral edge of the window plate 8.
Thereby, the window edge molding 20 is attached along the gap S.

In the state where the window edge molding 20 is attached as described above, the weir forming portion 28 of the molding body 21.
In the cushion material 30 in which the root portion 31 is joined to the expanded joint portion including the joint portion, the elongated cushion portion 32 comes into contact with the outer surface of the window plate 8 and is elastically deformed to come into contact (close contact) without a gap. . In addition, the convex edge forming portion 29 of the molding body 21
In the cushion material 33 joined at the root portion 35 to the expanded joint portion including the joint portion, the elongated cushion portion 36 has a body panel as an attached body, that is, the top portion of the peripheral wall portion 7 of the window frame portion 5 or the same. It comes into contact with the outer surface of the front pillar panel 2 continuous to the top and elastically deforms to make contact (close contact) without a gap.

The molding main body 21 is formed of a rigid hard synthetic resin with a required strength, while the cushion members 30 and 33 are formed of a soft synthetic resin that is softer and more elastic than the molding main body 21. A desired cushioning property can be imparted to the cushion portions 32 and 36 of the materials 30 and 33. Therefore, when the window rim molding 20 is attached, the coating film of the front pillar panel 2 as the vehicle body panel and the window plate 8 are prevented from being damaged, in addition to the above-mentioned damage prevention, the contact noise with the window plate 8 is prevented from being generated, and these parts are also prevented. It is possible to prevent the formation of a gap in the. Further, it is possible to prevent an unexpected gap from being formed between the vehicle body panel and the window plate 8 and prevent the appearance from being deteriorated due to the gap. Further, even if there are variations in the manufacturing and assembly of the vehicle body panel and the window plate 8 or variations in the manufacture of the window edge molding 20 itself, these variations are caused by the cushion portions 3 of both the cushion members 30 and 33 of the window edge molding 20.
It is possible to absorb by elastic deformation of 2, 36. In other words, the cushion portions 32 and 36 of the cushion members 30 and 33 are elastically deformed, and the vehicle body panel and the window plate 8 are
Since it contacts (closes) with no gap, it is possible to prevent deterioration of appearance.

When the vehicle is running, rainwater flowing toward the left and right sides of the outer surface of the window plate 8 is dammed by the weir 28A and then guided down by the weir 28A or flows downward. It flows toward the roof panel 3. For this reason, the rainwater is prevented from flowing over (crossing) the window edge molding 20 toward the side window plate (side glass) of the vehicle, and a problem of degrading the side visibility does not occur.

In particular, the weir forming portion 28 and the convex edge forming portion 2
The cushion members 30 and 33 joined to the expansion joints including the respective joints of 9 are integrally formed with the expansion joints including the respective joints of the cough forming portion 28 and the convex edge forming portion 29 simultaneously with the injection molding. The base portions 31 and 35 having a substantially U-shaped cross section joined to each other and the elastically deformable elongated cushion portions 32 and 36 protruding from the base portions 31 and 35 are integrally provided. Therefore, both cushion materials 3
Reference numerals 0 and 33 denote cough forming portions 28 having respective root portions 31 and 35.
Alternatively, they are firmly joined and integrated with each other with a wide joint area of the expanded joint portion including the joint portion of the convex edge forming portion 29.
Therefore, it is possible to favorably prevent the problem that the cushion materials 30 and 33 are unexpectedly peeled from the cough forming portion 28 or the convex edge forming portion 29. When the material forming the molding body 21 and the material forming the cushion materials 30 and 33 are compatible with each other, the two parts are firmly joined by welding without any special treatment at the joining portion. If it is not soluble, a strong bond can be obtained by a process such as forming a primer layer in advance on the part corresponding to the bond of the molding body 21.

Further, in the first embodiment, the cushion members 30 and 33 provided at positions separated from each other in the molding body 21 are integrally joined to the back wall 26 of the cover 22 to form a plurality of connecting portions. They are integrally connected by 37. Therefore, the cushion material 3 is attached to the molding body 21.
Cushion members 30, 3
3 is very effective in preventing peeling. In addition, in the first embodiment, the terminal covering portion 38, which is integrally formed so as to cover the lower terminal portion 21a of the molding body 21, is formed by injection molding a soft synthetic resin of the same material as the cushion materials 30 and 33. The cushion members 30 and 33 are integrally formed with each other. Therefore, the cushion members 30 and 33 are more firmly joined to the molding body 21,
It is even more effective in preventing the cushion materials 30 and 33 from peeling off.

Next, a manufacturing method for manufacturing the window edge molding 20 described above and a manufacturing apparatus used for the manufacturing method will be described with reference to FIGS.
It will be described with reference to FIG. Note that FIG. 6 is a plan view of the cavity mold with a core mold, which will be described later, removed for ease of understanding. 7 and 8 are VII of FIG.
FIG. 7 is a cross-sectional view of a corresponding portion taken along the line VII. In addition, FIG.
10 and 10 are sectional views of a corresponding portion taken along the line XI-XI in FIG. Further, FIGS. 7 and 9 are sectional views showing a state before injecting a molten material described later, and FIGS. 8 and 10 are sectional views showing a state in which the molten material is filled. That is, in FIG. 6, FIG. 7 and FIG. 9 showing an injection molding apparatus made of metal such as steel as a manufacturing apparatus for window rim molding,
Of the two molds that perform mold closing and mold opening operations, one mold 71 includes a core mold 71A and a stripper plate 71B, and is formed at a predetermined position of the core mold 71A at a predetermined position of the window edge molding 20. The slide molds 78, 79 are allowed to slide (advance / retract) in the undercut portion, that is, in the portion corresponding to the one side edge of the cover portion 22 of the molding body 21 on the rear wall 26 side and the cushion members 30, 33. It is assembled. In the cavity mold 72 as the other molding die, the cover portion 22 of the molding main body 21 as the first molding is brought into contact with the die surface portion and positioned and set. Further, as shown in FIG. 9, in the mold closed state, the tip of the pressing portion 711 of the core mold 71A contacts the back wall 26 of the molding body 21 to press the molding body 21 against the cavity mold 72. Since the cavity 23 is formed between the back wall 26 and the cover 22, the pressing force of the core die 71A is absorbed somewhat by the elastic deformation of the back wall 26, and the pressing force is directly transmitted to the cover 22. Never. As a result, even if the cover 22 contacts the mold surface of the cavity mold 72, scratches and the like are prevented. It is particularly effective if the cover 22 is coated. As described above, the hard synthetic resin molding body 21 has a cover 22
The weir forming portion 28 is provided on the rear wall 26 of the
A convex edge forming portion 29 is provided to project from one side edge. In each of the cuff forming section 28 and the convex edge forming section 29, the vicinity including these joints is made smaller than the outer dimensions of the cuff section 28A and the convex edge section 29A of the window edge molding 20 as the final product. As a result, the expansion joints are formed.

As shown in FIGS. 7 and 9, the core mold 71A
And the cavity mold 72 are closed, and the slide mold 78,
In the state where 79 has advanced to the forward end position, the core mold 7
1A, the cavity mold 72, the slide molds 78, 79, and the molding body 21, and around the weir forming portion 28 and the convex edge forming portion 29 of the molding body 21, a root portion 31,
Root cavities 83 and 86 that are continuous in the longitudinal direction for forming 35, and cushion part cavities 84 and 87 that form the elongated cushion parts 32 and 36 are formed in communication with each other. And the root cavity 83,
The molding cavities 82 and 85 corresponding to the cushion materials 30 and 33 of the window edge molding 20 are configured by 86 and the cushion portion cavities 84 and 87. As a result, the molding cavities 82, 85 have a larger cross-sectional area than the cavities of the cushion cavities 84, 87 alone, and reduce the resistance when the fluid (that is, the molten material) flows, as will be described later. The flow of the molten material can be done smoothly.

A communication passage 88 corresponding to the connecting portion 37 of the window edge molding 20 is formed between the back wall 26 of the cover 22 of the molding body 21 and the pressing portion 711 of the core die 71A. The communication passage 88 passes through the penetrating portion 46 penetrating the mounting portion 40 of the molding body 21, one end thereof communicates with one root cavity 83, and the other end communicates with the other root cavity 86. ing. Further, in the state where the core mold 71A and the cavity mold 72 are closed, the end cover portion 3 is provided between the core mold 71A and the cavity mold 72.
A terminal molding cavity 81 corresponding to No. 8 is formed. Then, one ends of the molding cavities 82 and 85 are communicated with the terminal molding cavities 81, respectively (see FIG. 6).
reference). In addition, the injection gate 7 is provided in the terminal molding cavity 81.
7 are provided, more preferably each molding cavity 82,
An injection gate is provided in at least one of the 85 and the communication passage 88. In this Embodiment 1,
A plurality of communication passages 88 provided at a predetermined interval in the longitudinal direction or one molding cavity 82 located in the vicinity thereof.
The injection gates 75 and 76 are respectively provided at a plurality of positions. The respective injection gates 75, 76, 77 are communicated with the runner passage 73 via the respective sub-sprue passages 74. The runner passage 73 is adapted to communicate with the injection nozzle of the injection molding machine via a main sprue passage (not shown) (see FIG. 7).

That is, the molten material made of the soft synthetic resin supplied from the injection nozzle flows through the main sprue passage to the runner passage 73 and then to each sub-sprue passage 74.
The molten material injected from the injection gate 77 passes through the terminal molding cavity 81 and flows into the molding cavities 82 and 85 while being filled in the terminal molding cavity 81. The molten material injected from each of the injection gates 75 and 76 is filled in one molding cavity 82 and flows into the other molding cavity 85 through the plurality of communication passages 88. This causes the molten material to move into each molding cavity 82,
85, the terminal molding cavity 81 and each of the communication passages 88 are filled without any shortage. Then, as shown in FIGS. 8 and 10, the molten material filled in the molding cavities 82, 85, the terminal molding cavities 81, and the communication passages 88 is cooled and solidified, so that each portion of the molding body 21 is The cushion members 30, 33 and the connecting portions 37 are integrally joined together, and the terminal covering portion 38 is integrally joined to the terminal portion 21a of the molding body 21, whereby the window edge molding 20 is manufactured. It After that, core type 7
1A and the cavity die 72 are opened, and the window edge molding 20 is released from the mold with the slide dies 78 and 79 retracted to the retracted position. This completes one cycle of manufacturing the window rim molding 20.

As described above, the window edge molding 20 described in the first embodiment can be easily manufactured by the manufacturing method using the injection molding apparatus as the window edge molding manufacturing apparatus. That is, according to the manufacturing method of the first embodiment, the weir forming portion 28 and the convex edge forming portion 29 of the molding body 21.
In the vicinity of the window edge molding 2 as the final product, the vicinity including the joints of the cough forming portion 28 and the convex edge forming portion 29 is
The expansion joints are formed by being formed smaller than the outer dimensions of the weir 28A and the convex edge 29A. Then, the cross-sectional area of the molding cavities 82, 85 is expanded by the amount corresponding to the root cavities 83, 86 provided at the position corresponding to the expansion joint, and the molten resin flows in the molding cavities 82, 85 in the longitudinal direction. Since the pressure loss at the time of molding is small and the flow resistance is reduced as a result, the flow of the molten resin in the molding cavities 82 and 85 is smoothed. Therefore, the root portions 31 and 35 having a substantially U-shaped cross section are integrally joined to the expansion joint portion including the joint portion 28 and the convex edge portion 29 of the molding body 21. Elastically deformable elongated cushion portions 32, 36 protruding from the root portions 31, 35 of the
It is possible to form the cushioning materials 30 and 33 that integrally have and have a predetermined size and shape without causing an unfilled portion (commonly referred to as a “short”). In other words, the root cavities 83 and 86 play a role of a runner that uses a part of the molding body 21 as a flow path for the molten resin.

Further, each of the molding cavities 82 and 85 has a plurality of communicating passages 8 at its root cavities 83 and 86.
8, the molten material flows from the root cavity 83 to the root cavity 86 through the communication passage 88. Therefore, the molding cavity 85
Is not filled, the molten material continues to flow into the root cavity 86 due to the pressure difference between the inside of the molding cavity 82. Therefore, the molten material is filled in the molding cavity 85 while the pressure of the molten material is kept substantially uniform between the molding cavities 82 and 85. As a result, the molding cavities 82 and 85 are filled with the molten material without any shortage, and the desired cushion materials 30 and 33 can be satisfactorily formed. In addition, each molding cavity 8
One ends of the reference numerals 2, 85 communicate with the terminal molding cavity 81. Therefore, after the molten material injected into the terminal molding cavity 81 is filled in the terminal molding cavity 81, a part of the molten material flows into the molding cavities 82 and 85 and is injected from other positions to form the molding cavity 82, 85
It is filled with the molten material flowing inside. As a result, the molding cavities 82, 85 and the terminal molding cavities 81 are filled with the molten material without any shortage, and the desired cushion materials 30, 33 and the terminal covering portions 38 can be formed well.

Further, injection gates 75 and 76 are provided at a plurality of locations in one molding cavity 82 located in the vicinity of a plurality of communication passages 88 that are provided at predetermined intervals in the longitudinal direction. Therefore, the molten material is injected from each of the injection gates 75, 76 and 77 into the one molding cavity 82 and the one terminal molding cavity 81 substantially at the same time. Therefore, the terminal molding cavity 81, the one molding cavity 8
2. The plurality of communication passages 88 and the other molding cavity 85 are filled with the molten material in a short time. The injection gate 7
By providing 5, 76 in the communication passage 88 or in the vicinity thereof, the pressure loss generated when the molten material passes through the communication passage 88 is effectively compensated and the molten material is satisfactorily flowed into the molding cavity 85. be able to. In addition, as described above, the molding cavities 82 and 8 having a substantially enlarged cross-sectional area.
When the molten material flows without causing insufficient filling due to 5, the injection gate 77 can be used at one place and the other injection gates 75 and 76 can be omitted. In this case, there is an advantage that the problem of weld generated by using a plurality of injection gates does not occur.

Of the hard materials, the molding body 21 is made of a hard synthetic resin in the first embodiment. Therefore, the molding body 21 functions as a heat insulating material, and when the molten material comes into contact with the molding body 21 in the molding cavities 82 and 85, it is prevented that the heat is abruptly taken to lower the temperature and solidify the molten material. can do. Therefore, the molten material can flow for a relatively long time, and the flow of the molten material in the long molding cavities 82 and 85 is maintained smoothly. Further, when the molding body 21 is formed of a light metal alloy or the like, the molding body 21 that has been heated to a temperature exceeding normal temperature is set in the injection molding die, whereby the injected molten material is rapidly heated. The temperature drop can be prevented in the same manner as described above. As described above, by preventing a rapid decrease in the temperature of the molten material, the molten material smoothly flows into the molding cavities 82, 85, the communication passages 88, and the terminal molding cavities 81, respectively, and is filled without insufficiency. Cushion material 30, 3
3, the connecting portion 37 and the terminal covering portion 38 can be formed well.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the cushion body 30, 3 as the second molded body is used with respect to the molding body 21 as the first molded body.
It is an object of the present invention to provide a manufacturing method capable of preventing a partial deformation of the molding body 21 caused by a flow pressure at the time of injection molding of a molten material for forming No. 3. That is, as a material for forming the molding body 21 as the first molded body, a material having optimum characteristics may not be used in some cases. For example, when the molding body 21 is forced to use a material having insufficient strength (a material having high hardness but poor toughness, or a material having high toughness but low hardness) or a molding as the first molded body. In some cases, the thickness of the gate facing portion of the main body 21 must be reduced. As described above, when the molding body 21 as the first molded body is formed of a material having insufficient strength, the molten material for forming the cushion materials 30 and 33 as the second molded body is molded. When the cavities 82 and 85 are injection-filled to form the cushion materials 30 and 33 as the second molded bodies, an excessive injection pressure exceeding the limit acts on the gate facing portion of the molding body 21 as the first molded body, and The body 21 may be locally deformed or damaged. In particular, when the portion of the molding body 21 facing the injection gates 75 and 76 that faces the gate intersects the injection direction of the molten material at a substantially right angle, the molding fluid has the same flow pressure at the time of injection of the molten material. It acts on the gate facing portion of the molding body 21, and may locally deform or damage the gate facing portion of the molding body 21 and its vicinity. Therefore,
In the second embodiment, it is intended to prevent partial deformation of the molding body 21 due to the flow pressure of the molten material for injection molding the cushion materials 30 and 33 on the molding body 21.

FIG. 11 is a sectional view showing a state in which the molten material is injected and filled in the molding cavity according to the second embodiment. FIG. 12 is an explanatory diagram showing the relationship between the gate facing portion of the molding body as the first molded body, the guide body, and the injection gate. As shown in FIGS. 11 and 12, in the second embodiment, the gate facing portion of the molding body 21 facing the injection gates 75 and 76 for injecting the molten material into the molding cavities 82 and 85, the second embodiment. Then, the mall body 2
A guide body 101 having a guide surface 100 inclined in a direction intersecting with the injection direction of the molten material at a non-perpendicular direction is provided in a predetermined portion of the back wall 26 of the cover portion 22 having the first hollow portion 23, and the injection gate 75 , 76, the molten material injected along the guide surface 100 is filled into the molding cavity 85. In particular, the flow direction of the molten material injected from the injection gates 75 and 76 is not perpendicular to the back wall 26 of the cover 22 of the molding body 21, and, for example, the flow direction of the molten material and the back wall 26 of the cover 22 are The inclination angle of the guide surface 100 of the guide body 101 is set such that the angle θ formed by the angle exceeds 90 degrees, and is preferably an obtuse angle of about 120 degrees to 150 degrees. In addition, in the second embodiment, as shown in FIG. 12, the guide body 101 is the molding body 2
1 facing the gate, that is, formed integrally with a predetermined portion of the back wall 26 of the cover 22 having the cavity 23,
The guide surface 100 is connected to the back wall 26 by a smoothly continuous curved surface. Further, the width dimension of the guide body 101 with respect to the longitudinal direction of the molding body 21 is appropriately set so as not to fall below the opening width dimension of the injection gates 75 and 76. The guide surface 100 of the guide body 101 is formed as a smooth surface. Since the other configurations of the second embodiment are configured in substantially the same manner as the first embodiment,
The same reference numerals are given to the same components and the description thereof will be omitted.

Therefore, in the second embodiment,
When the molten material is injected from the injection gates 75 and 76 to fill the molding cavities 82 and 85, the molten material flows along the inclined guide surface 100 of the guide body 101 and fills the molding cavity 85. In other words, the flow direction of the molten material injected from the injection gates 75 and 76 does not intersect the back wall 26 of the cover 22 of the molding body 21 at an obtuse angle. Therefore, the mall body 21
The flow pressure of the molten material that acts on the back wall 26 of the cover 22 is reduced. As a result, it is possible to prevent the molding body 21 from being partially deformed on the back wall 26 of the cover portion 22 during the injection molding of the cushion materials 30 and 33 with the molten material. Further, in the molding body 21, a predetermined portion of the back wall 26 of the cover portion 22 having the hollow portion 23 as a hollow portion is a gate facing portion, and the guide body 101 is integrally provided at the gate facing portion. Therefore, since the guide body 101 is formed at a wall portion of the cover portion 22 on the side opposite to the back wall 26, that is, at a position away from the surface of the exterior design portion of the cover portion, distortion such as sink marks is formed on the surface. It is prevented from occurring. In addition, the guide body 101 includes the cover 2
The second back wall 26 is integrally formed with the second back wall 26, and the wall thickness of the second back wall 26 is increased by the amount corresponding to the guide body 101, and the strength is increased. Therefore, the gate facing portion of the molding body 21, that is, the back wall 26 of the cover 22 and its vicinity are prevented from being locally deformed.

The width dimension of the guide body 101 in the longitudinal direction of the molding body 21 is set so as not to fall below the opening width dimension of the injection gates 75 and 76. Therefore, the injection pressure of the molten material injected from the openings of the injection gates 75 and 76 is the guide surface 1 of the guide body 101 that is inclined.
00 in a substantially large area.
As a result, the pressure per unit area acting on the inclined guide surface 100 of the guide body 101 is reduced. For this reason,
It is possible to prevent the guide body 101 from being damaged, which in turn has a great effect on the deformation and breakage of the molding body 21. Further, when the molten material is injected, the molten material (liquid) is prevented from leaking in the longitudinal direction beyond the guide surface 100 of the guide body 101, and the molten material (liquid) is guided to the guide surface 100 of the guide body 101. And flow into the molding cavity 85 to fill the molding cavity 85. Further, since the guide surface 100 of the guide body 101 is formed to be a smooth surface, the molten material is guided by the guide surface 1 of the guide body 101.
At 00, it flows smoothly without receiving excessive flow resistance. As a result, during injection of the molten material, the guide 1
The problem that the material pressure acting on the molding body 21 via 01 is excessively increased is prevented.

In the second embodiment, the first
The case where the guide body 101 is integrally formed in the gate facing portion of the molding body 21 as a molded body, that is, in a predetermined portion of the back wall 26 of the cover portion 22 having the hollow portion 23 has been illustrated, but is not limited to this. is not. That is, in FIG.
As shown in FIG. 5, a guide body 101A having an inclined guide surface 100A is formed separately from the molding body 21, and a portion of the molding body 21 facing the gate, that is, the back wall 26 of the cover portion 22 of the molding body 21, is predetermined. You may set and fix it in a position. Further, a recess is formed at a predetermined position on the back wall 26 of the cover 22 of the molding body 21 to form the guide body 101A.
May be positioned and fixed, or may be positioned and fixed using a fixing means such as a clip, a screw, or an adhesive. As described above, by forming the guide body 101A as a separate body from the molding body 21, the characteristics required for the guide body 101A (for example, good with respect to the molten material corresponding to the cushion materials 30 and 33 as the second molded bodies). The guide body 101A can be formed by appropriately selecting a material having such properties as smoothness, heat resistance, and releasability. Therefore, the molten material corresponding to the cushioning materials 30 and 33 as the second molded body can exhibit excellent characteristics such as slipperiness, heat resistance, and releasability.
Further, when it is difficult to integrally form the guide body 101A on the molding body 21 due to a complicated structure of a molding die corresponding to the molding body 21, or after forming the cushioning materials 30 and 33 with the molten material, the clip is formed. This is an effective method when it is difficult to attach the attachment such as. In the latter case, the guide body 101A is removed after forming the cushion members 30 and 33. Further, when the molten material is injected, the heat of the injected molten material is absorbed in the guide body 101A without directly acting on the gate facing portion of the molding body 21, and the guide body 101A
Is conducted through. Therefore, it is possible to prevent a problem that the gate facing portion of the molding body 21 is excessively heated and deformed by the heat of the molten material. In addition, when the guide body is integrally formed, this portion becomes thick, and a problem that sink marks are likely to occur on the corresponding outer surface of the molding body 21 as the first molded body is likely to occur, but a separate guide body 101A is used. By doing so, such a problem can be prevented.

The present invention is based on the first and second embodiments.
It is not limited to. For example, in the first and second embodiments, the case where the long composite molded article is the side window rim molding 20 is illustrated, but the roof molding 70 (see FIG. 5) is provided at the upper end of the window rim molding 20. It is also possible to integrally form a part (front portion) of the above) or the entire roof molding 70. It can also be used in the case of a window edge molding that can be attached along the gap between the outer peripheral edge of the window plate (rear window glass) at the rear of the vehicle and the peripheral wall of the window frame. Is. In addition, at the upper edge portion of the window frame portion at the front or rear of the vehicle, a window edge formed so as to be attachable along the gap between the outer peripheral edge of the window plate and the peripheral wall portion of the window frame portion. It can be adopted even in the case of a molding (upper window edge molding 16 in FIG. 5). Further, the long composite molded product of the present invention can be applied to parts other than vehicle window frame moldings, for example, long composite molded products such as bumpers and protector moldings.

[0054]

As described above, according to the long composite molded article according to the invention of claim 1, the second molded body can be stably held against the joint portion of the convex edge forming portion of the first molded body. In addition, it is possible to firmly bond them, and it is possible to prevent a problem that the second molded body is unexpectedly peeled from the convex edge forming portion of the first molded body. According to the long composite molded article of the invention of claim 2, in addition to the effect of the invention of claim 1, it is possible to further firmly bond the plurality of second molded bodies to the first molded body. Yes, second
It is very effective in preventing peeling of the molded body. According to the long composite molded product according to the invention of claim 3, in addition to the effect of the invention of claim 2, the long composite molded product can be stably attached to the mounted body, and the mounted body The plurality of second molded bodies with respect to the body can be held in a desired posture. According to the long composite molded article according to the invention of claim 4,
In addition to the effect of the invention of claim 2 or 3, the plurality of second molded bodies can be more firmly bonded to the first molded body, and the effect of preventing peeling is further exerted. According to the long composite molded article according to the invention of claim 5, in addition to the effect of the invention of any one of claims 2 to 4, each cushion material is brought into contact with the vehicle body panel and the window plate, respectively. It can be installed without a gap, and the appearance can be improved. Moreover, since the root portions of the second molded bodies can be firmly joined and integrated in a wide joint area of the expanded joint portion including the joint portions of the convex edge constituent portions of the molding body, durability is also improved. Excel. According to the long composite molded product of the invention of claim 6, in addition to the effect of the invention of any one of claims 2 to 5, the molding body of the window rim molding is firmly formed to form a cushion material. The desired posture can be maintained, and since the elongated cushion portion elastically deforms and comes into contact with the vehicle body panel or the window plate as the attached body without a gap, it is possible to prevent the appearance from being deteriorated.

According to the method of manufacturing a long composite molded product according to the invention of claim 7, the long composite molded product according to the invention of claim 1 can be easily manufactured. According to the method for manufacturing a long composite molded article according to the invention of claim 8,
A second molded body integrally having a root portion joined to an expanded joint portion including a joint portion of a convex edge forming portion of a molded body and an elongated cushion portion protruding from the root portion can be favorably formed without defective molding. Can be formed. According to the method for producing a long composite molded article according to the invention of claim 9, in addition to the effect of the invention of claim 7, the long composite molded article according to claim 2 or The described vehicle window rim molding can be easily manufactured. According to the method for manufacturing a long composite molded product according to the invention of claim 10, in addition to the effect of the invention of claim 9, the plurality of molding cavities can be filled with the molten material by allowing it to flow well. Therefore, defective molding due to insufficient filling of the molten material can be prevented. According to the method for producing a long composite molded article according to the invention of claim 11, in addition to the effect of the invention of claim 9 or 10, the communication passage is not extended in length and has a substantially shortest dimension. Since the molding cavities are communicated with each other, pressure loss (pressure drop) of the molten material can be prevented.

According to the method for producing a long composite molded article according to the invention of claim 12, in addition to the effect of the invention of any one of claims 7 to 11, a desired second molded article can be obtained. When a light metal molded product is used as the first molded product, it is possible to reduce the thickness of the first molded product and further to provide a metallic luster to a part of the surface (for example, a design surface).
To obtain a long composite molded article. According to the method for producing a long composite molded article according to the invention of claim 13, in addition to the effect of the invention of any one of claims 7 to 12, the second molded article is molded by a molten material at the time of injection molding. (1) It is possible to prevent the molded body from being partially deformed. According to the method for manufacturing a long composite molded article according to the invention of claim 14, in addition to the effect of the invention of claim 13, the hollow portion of the first molded body is provided on the side opposite to the wall on the gate facing portion side. Wall surface,
For example, distortion such as sink mark is prevented from being generated on the design surface, and deterioration of appearance due to distortion such as sink mark can be prevented. According to the method for producing a long composite molded article according to the invention of claim 15, in addition to the effect of the invention of claim 13 or 14, the gate facing portion of the first molded body and its vicinity are locally deformed. Can be prevented. Claim 16
According to the method for producing a long composite molded article according to the invention of claim 1, in addition to the effect of the invention of claim 13 or 14, in addition to the first molded body, good slidability, heat resistance to the molten material, A suitable guide body can be selected in consideration of characteristics such as releasability. According to the method for manufacturing a long composite molded article according to the invention of claim 17, in addition to the effect of the invention of any one of claims 13 to 16, a unit that acts on the inclined guide surface of the guide body. By reducing the pressure per area, it is possible to favorably prevent damage to the guide body itself, and deformation and breakage of the first molded body. According to the method for producing a long composite molded article according to the invention of claim 18, in addition to the effect of the invention of any one of claims 13 to 17, in the injection of the molten material, a guide member is used. As a result, it is possible to prevent an inconvenience that the flow pressure of the molten material acting on the first molded body is excessively increased, and it is effective in preventing the deformation of the first molded body.

According to the apparatus for manufacturing a long composite molded article according to the invention of claim 19, the manufacturing method according to the inventions of claims 7 to 18 can be easily carried out.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along the line II of FIG. 4 showing a window rim molding for a vehicle according to Embodiment 1 of the present invention.

FIG. 2 is a II- of FIG. 4, which also shows a window rim molding for a vehicle.
It is a cross-sectional view based on the II line.

FIG. 3 is a III of FIG. 4 also showing a window rim molding for a vehicle.
It is a cross-sectional view based on the line -III.

FIG. 4 is a rear view showing a window rim molding for the same vehicle.

FIG. 5 is a perspective view showing a mounted state of a window rim molding for a vehicle from the front side of the vehicle.

FIG. 6 is a plan view showing a cavity mold from which a core mold of an injection molding device as a window edge molding manufacturing device is removed.

FIG. 7 is a sectional view taken along line VII-VII of FIG.

8 is a sectional view showing a state in which the molten material is injected and filled in the molding cavity in FIG. 7.

9 is a sectional view taken along line IX-IX of FIG.

FIG. 10 is a sectional view showing a state in which a molten material is injected and filled in the molding cavity in FIG.

FIG. 11 is a cross-sectional view showing a state where a molten material is injection-filled into the molding cavity according to the second embodiment of the present invention.

FIG. 12 is an explanatory view showing the relationship between the gate facing portion of the first molded body, the guide body, and the injection gate.

FIG. 13 is a perspective view showing a guide body which is also formed separately from the first molded body.

[Explanation of symbols]

2 Front pillar panel 5 Window frame 7 peripheral wall 8 window boards 20 Window edge molding (long composite molded product) 21 Mall body (first molded body) 28 Cough component (convex edge component) 28A Cough (convex edge) 29 convex edge component 29A convex edge 30, 33 Cushion material (second molded body) 31,35 Root 32, 36 Cushion 37 Connection 38 Terminal cover 40 Mounting part (partition wall) 50 First fitting 60 Second fixture 71 Mold (one mold) 71A core type 72 Cavity mold (other mold) 75, 76, 77 injection gate 78, 79 slide type 81 Terminal molding cavity 82,85 Mold cavity 83,86 Root cavity 84, 87 Cushion cavity 88 passages 100 guideway 101 guide

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tatsuya Tamura             4-1-1 Nagane-cho, Obu City, Aichi Prefecture             Business (72) Inventor Hatayama Gogo             4-1-1 Nagane-cho, Obu City, Aichi Prefecture             Business (72) Inventor Kimiko Tsutani             4-1-1 Nagane-cho, Obu City, Aichi Prefecture             Business F term (reference) 3D201 AA13 AA26 AA37 BA01 CB02                       DA18 DA23 DA31 DA34 DA73                       EA06A EA07D FA01 FA08                 4F206 AD05 AD07 AD24 AH23 AH25                       AH26 JA07 JB12 JQ81

Claims (19)

[Claims] 1. A first molded body which is formed to be long and has a convex edge forming portion extending in the longitudinal direction on a part of an outer peripheral portion of its cross section, and a joint portion of the convex edge forming portion of the first molded body. A long composite molded product including a second molded product that is joined and extends in a longitudinal direction thereof, wherein a convex edge forming portion of the first molded product is a convex edge portion of the long composite molded product. By being formed smaller than the external dimensions of
An expansion joint is provided in the vicinity of the joint, and the second molded body is made of a material different from that of the first molded body and is formed by injection molding on the expansion joint including the joint of the convex edge component. By doing so, it is joined to the extended joint including the joint of the convex edge forming section, and the convex edge section of the long composite molded article, the root section that constitutes the convex edge forming section together with the convex edge section,
A long composite molded article characterized by integrally having an elongated cushion portion protruding from the root portion thereof. 2. The elongated composite molded article according to claim 1, wherein the outer peripheral portion of the cross section of the first molded body is provided with convex edge constituent portions at a plurality of locations separated from each other, respectively. The same number of second molded bodies are joined to the plurality of convex edge constituent portions of one molded body at each root portion, and each root portion of the plurality of second molded bodies extends in the width direction. A long composite molded product characterized by being integrally connected by. 3. The long composite molded article according to claim 2, wherein the first molded body is provided on the back side thereof with a plurality of second molded bodies and is attached to the mounted body. A long composite molded product characterized in that the parts are integrally projected. 4. The long composite molded article according to claim 2, wherein at least one terminal portion of the first molded body is covered with a terminal cover portion, and the terminal cover portion includes a plurality of terminal portions. A long composite molded article made of the same material as that of the second molded body and integrally formed by connecting end portions of the plurality of second molded bodies. 5. The long composite molded article according to any one of claims 2 to 4, wherein the long composite molded article includes a peripheral wall portion of a window frame portion of a vehicle body panel and a window plate. A vehicle window rim molding mounted along the gap between the first molded bodies constitutes a molding body of the vehicle window rim molding, and one of a plurality of second molded bodies is a second molded body. The molded body constitutes a cushioning material that is joined to the convex edge forming portion on one side of the molding body and contacts the vehicle body panel, and the other second molded body is a convex edge on the other side of the molding body. A long composite molded article, characterized in that it constitutes a cushioning material that is joined to the constituent parts and comes into contact with the window plate. 6. The long composite molded article according to claim 1, wherein the first molded body is made of a rigid hard material, and the second molded body is the first molded body. 1. A long composite molded article, which is formed of a soft material that is softer and more elastic than one molded body, and is elastically deformable in an elongated cushion portion protruding from a root portion thereof. 7. A first molded body, which is formed to be long and has a convex edge forming portion extending in the longitudinal direction in a part of an outer peripheral portion of its cross section, and a joint portion of the convex edge forming portion of the first molded body. A method for manufacturing a long composite molded article including a second molded body that is joined and extends in the longitudinal direction thereof, wherein the second composite is formed to be smaller than the outer dimension of the convex edge portion of the long composite molded article. By doing so, a first molded body having a convex edge forming portion in which an expansion joint portion is provided in the vicinity including the joint portion is prepared, and the first molded body is placed in an injection molding die corresponding to the second molded body. In a state where the mold is set and the mold is closed, a root of the second molded body is formed in an expanded joint portion including a joint portion of the convex edge forming portion between the mold portion in the injection molding die and the first molded body. Forming a root cavity forming a portion and an elongated cushion portion forming a main body of the second molded body. And a molding portion cavity to form a molding cavity provided in communication with each other along the longitudinal direction, and thereafter, a molten material is injected into the molding cavity to apply the molten material to the root cavity and the cushion portion cavity of the molding cavity. A second unit integrally having a root portion joined to the expansion joint portion including the joint portion of the convex edge forming portion of the first molded body by filling, and an elongated cushion portion protruding from the root portion. A method for producing a long composite molded article, which comprises forming a molded body. 8. The method for producing a long composite molded article according to claim 7, wherein the molten material is injected from a plurality of injection gates arranged at predetermined intervals in the longitudinal direction of the molding cavity. A method for producing a long composite molded article, characterized in that the molten material is filled in the root cavity and the cushion cavity of the molding cavity. 9. The method for manufacturing a long-sized composite molded article according to claim 7, wherein the first molded body has convex edge constituent parts formed at a plurality of positions separated from each other on an outer peripheral portion of a cross section thereof. With the first molded body set in the injection mold and the mold closed, a plurality of molding cavities having a root cavity and a cushion cavity along the longitudinal direction are provided in the injection mold. A plurality of forming cavities and a communicating passage that communicates them are formed between the plurality of forming cavities, and then a molten material is injected into at least one forming cavity or the communicating passage of the plurality of forming cavities, By filling the molding cavity with the molten material and flowing a part of the molten material into the other molding cavity through the communication passage to fill the molding cavity, A plurality of second molded bodies each having a root portion joined to an expanded joint portion including a joint portion of the convex edge forming portion and an elongated cushion portion protruding from the root portion are formed respectively. And a method for producing a long composite molded article. 10. The method for producing a long composite molded article according to claim 9, wherein the molten material is injected at a position at or near the communication passage. Method. 11. The method for producing a long composite molded article according to claim 9 or 10, wherein a partition wall is formed between the adjacent molding cavities in the first molded body, and the communicating passage is formed. Is provided through a penetrating portion penetrating the partition wall, and a method for manufacturing a long composite molded article. 12. A method for producing a long composite molded product according to claim 7, wherein a synthetic resin molded product or a light metal molded product is used as the first molded product. A method for producing a long composite molded article. 13. The method for producing a long composite molded article according to claim 7, wherein the gate of the first molded body faces the injection gate for injecting the molten material into the molding cavity. A guide body having a guide surface inclined in a direction intersecting with the injection direction of the molten material at a right angle is provided in the facing portion, and the molten material injected from the injection gate flows along the guide surface. A method for producing a long composite molded article, characterized in that the molding cavity is filled. 14. The method for producing a long composite molded article according to claim 13, wherein the first molded body has a hollow portion, and a predetermined position of a wall portion forming the hollow portion faces the gate. A method for manufacturing a long composite molded article, characterized in that a guide body is provided in a portion facing the gate. 15. The method for producing a long composite molded article according to claim 13 or 14, wherein the guide body is integrally formed at a gate facing portion of the first molded body. A method for manufacturing a long composite molded article. 16. The method for manufacturing a long composite molded article according to claim 13 or 14, wherein the guide body is formed separately from the first molded body, and the gate-facing portion of the first molded body is formed. A method for producing a long composite molded article, characterized in that the molten material is injected and filled into the molding cavity in a state of being set to. 17. The method for producing a long composite molded article according to claim 13, wherein the width dimension of the guide body in the longitudinal direction of the first molded body is the opening of the injection gate. A method for producing a long composite molded article, characterized in that the size is set so as not to fall below the width dimension. 18. The method for producing a long composite molded article according to claim 13, wherein the guide surface of the guide body is a smooth surface. Method for manufacturing a long composite molded article. 19. A first molded body, which is formed to be long and has a convex edge forming portion extending in the longitudinal direction on a part of an outer peripheral portion of its cross section, and a joint portion of the convex edge forming portion of the first molded body. An apparatus for producing a long composite molded article, which comprises a second molded body that is joined and extends in the longitudinal direction thereof, comprising a pair of molding dies that perform mold closing and mold opening operations, the pair of molding dies Between the first and second moldings, each having a convex edge forming portion in which an extended joint portion is provided in the vicinity including the joint portion by being formed smaller than the outer dimension of the convex edge portion of the long composite molded article. In the state where the body is set and the pair of molding dies are closed, a root cavity forming a root of the second molded body is formed at a portion of the expansion joint including the joint of the convex edge forming portion. And the elongated cushion portion forming the main body of the second molded body And a cushion cavity formed to communicate with the root cavity, and the root cavity and the cushion cavity form a molding cavity corresponding to a second molded body that integrally has the root and the elongated cushion section. And, at least one of the pair of molding dies is provided with an injection gate for injecting and filling a molten material into the molding cavity.