JP2017094664A - Method for manufacturing resin component for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing resin components for a vehicle, capable of reducing a tact time and the number of components.SOLUTION: A method for manufacturing resin components 14 for a vehicle includes: a fender liner vacuum molding step of using an upper die 50, and vacuum molding a fender liner 20 from a sheet material 27; and a spat fitting step as a spat fitting step of using a lower die 60 allowing die closing to the upper die 50, and fitting spats 30 to the fender liner 20, of arranging the spats 30 having an opening 34 in an attitude in which the opening 34 is opened to the sheet material 27 to an opposite side to the upper die 50 to the sheet material 27, pinching the sheet material 27 and the spats 30 between the upper die 50 and the lower die 60 with closing die of the upper die 50 and the lower die 60, making a thermoplastic resin flow into the opening 34, and cooling and hardening the inflow thermoplastic resin so as to form an engaging part 24 engaged with the opening 34 of the fender liner 20.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a method for manufacturing a resin component for a vehicle.

  Conventionally, the manufacturing method of the resin component for vehicles is described in the following patent document 1. In patent document 1, the manufacturing method of the resin component for vehicles which attaches spats (attachment member) to a fender liner (attachment member) via a clip is described.

JP 2012-189152 A

  However, in the method described in Patent Document 1, it is necessary to perform a step of attaching the attachment member to the attachment member via a clip separate from the step of forming the attachment member. There was room for improvement in reducing time and the number of parts.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide a method for manufacturing a resin component for a vehicle that can reduce the tact time and the number of components.

  In order to solve the above-mentioned problem, a method for manufacturing a resin component for a vehicle according to the present invention is a method for manufacturing a resin component for a vehicle in which an attachment member is attached to an attachment member including a thermoplastic resin. A mounting member vacuum forming step of vacuum forming the mounted member from a sheet material containing the thermoplastic resin in a heated state using a mold, and a second molding capable of closing the mold with respect to the first molding die A mounting member mounting step for mounting the mounting member to the mounted member using a mold, wherein the mounting member having an opening is on the side opposite to the first mold with respect to the sheet material. The opening portion is arranged in a posture to open toward the sheet material, and the first molding die and the second molding die are closed as the first molding die and the second molding die are closed. Clamping the sheet material and the mounting member between Then, the thermoplastic resin is caused to flow into the opening, and the thermoplastic resin that has flowed in is cooled and hardened to form a locking portion that is locked to the opening on the attached member. An attachment member attaching step.

  According to the present invention, the attached member vacuum forming step and the attaching member attaching step can be simultaneously performed using one apparatus, for example, using a separate fastening member after the attached member vacuum forming step. Compared with a manufacturing method in which the mounting member is attached to the mounted member, the tact time and the number of parts for manufacturing the resin component for a vehicle can be reduced. In particular, in a vehicle, there is a high demand for cost reduction and weight reduction, and there is a need to form a mounted member by vacuum forming in order to reduce cost and weight. On the other hand, when forming the mounting member by vacuum forming, it is difficult to integrally form a boss or the like for mounting a separate mounting member, and the mounting member is attached via a separate fastening member. In the case of attaching to the mounting member, it is necessary to perform a separate process for attaching the mounting member after the vacuum forming step, and it is difficult to attach the mounting member to the mounted member at low cost due to molding restrictions. . Therefore, as a result of intensive studies, the inventors of the present application have developed the present technology capable of reducing the cost for attaching the attachment member to the attachment member when the attachment member is formed by vacuum forming.

  In the manufacturing method, the attachment member has the opening formed therethrough, and the second mold has a recess on a contact surface that contacts the attachment member, and the attachment member attachment step Then, the mounting member is arranged with respect to the second mold so that the opening communicates with the recess, and the thermoplastic resin flows into the recess through the opening. Also good. According to such a configuration, it is possible to sufficiently secure the bonding area between the locking portion and the mounting member, and it is possible to suitably ensure the bonding strength of the mounting member with respect to the mounted member.

  In the manufacturing method, the concave portion has an inner diameter larger than an inner diameter of the opening. In the attachment member attaching step, the opening has an opening edge opposite to the attached member side. The locking portion to be locked may be formed. According to such a configuration, since the locking portion is locked to the opening edge of the opening, the bonding strength of the mounting member to the mounted member can be suitably ensured by the anchor effect.

  In the manufacturing method, the attachment member is arranged on the side opposite to the first mold with respect to the sheet material, and the inner diameter thereof increases as the opening portion moves toward the sheet material side. The structure which has comprised the diameter-expanded shape may be sufficient. According to such a configuration, the thermoplastic resin can easily flow into the opening along the inner surface of the opening, and the locking portion can be suitably formed.

  In the manufacturing method, the mounting member is provided with a plurality of openings in parallel. In the mounting member mounting step, the mounting member is locked to the plurality of openings. A plurality of the locking portions may be formed. According to such a structure, a to-be-attached member and an attachment member can be latched by a some latching | locking part, and the joining strength of the attachment member with respect to a to-be-attached member can be ensured suitably.

  In the manufacturing method, the attached member may be a fender liner, and the attaching member may be spats attached to the front of the fender liner in the vehicle. According to such a configuration, by forming by vacuum forming, the fender liner can be formed at low cost, and the surface can be smooth and excellent in rectification in the wheel house. Then, by attaching spats to the fender liner in the attachment member attaching step, the aerodynamic characteristics of the vehicle resin component can be further improved without significantly increasing the cost of the vehicle resin component.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the resin component for vehicles which can reduce tact time and a number of parts can be provided.

The side view which shows the vehicle with which the vehicle resin component which concerns on Embodiment 1 of this invention was mounted | worn. An enlarged perspective view of a part of a resin component for a vehicle A plan view of a part of a resin component for a vehicle viewed from the lower side of the vehicle Sectional drawing which shows the attachment structure of the spats with respect to a fender liner (corresponding to the IV-IV line of FIG. 3) Side view showing vacuum forming equipment Sectional view showing the vacuum forming apparatus (corresponding to line VI-VI in FIG. 5) Explanatory drawing showing the spats mounting process (showing the upper and lower molds open) Explanatory drawing showing the spats mounting process (showing the upper and lower molds closed) Flow chart showing an example of a method for manufacturing a resin component for a vehicle Explanatory drawing which shows the spats attachment process which concerns on Embodiment 2 of this invention (The state which the upper mold | type and lower mold | types closed is shown) Explanatory drawing which shows the spats attachment process which concerns on Embodiment 3 of this invention (The state which the upper mold | type and the lower mold | type closed) is shown. The top view which looked at some resin components for vehicles concerning Embodiment 4 of the present invention from the vehicles lower side Sectional drawing which shows the attachment structure of the spats with respect to the fender liner which concerns on Embodiment 5 of this invention Sectional drawing which shows the attachment structure of the spats with respect to the fender liner which concerns on Embodiment 6 of this invention Flow chart showing a comparative example of a method for manufacturing resin parts for vehicles

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, as a vehicle resin component 14, a component in which these are integrated by attaching a spats (attachment component) 30 to a fender liner (attached component) 20 is illustrated. As shown in FIG. 1, the vehicle resin component 14 is attached to the vehicle 10 in a state where the fender liner 20 and the spats 30 are integrated. In the following description, the left side of FIG. 1 is described as the front of the vehicle, and the right side is described as the rear of the vehicle.

(Mounted member)
As shown in FIG. 1, the fender liner 20 is attached to the inside of a fender of a front tire house 12 that covers the front tire 11 of the vehicle via a fastening member (not shown). The fender liner 20 is made of a thermoplastic resin such as polyethylene, and is formed by a fender liner vacuum forming process. The vacuum forming is a manufacturing method suitable for forming not only the fender liner 20 but also a lightweight plate-like member such as a vehicular exterior material such as a vehicular undercover. By doing this, the material cost can be reduced compared to injection molding and the like, and as a result, the manufacturing method can contribute to the cost reduction of the molded product. A method for forming the fender liner 20 by the fender liner vacuum forming step will be described later.

  As shown in FIG. 2, the fender liner 20 includes a curved portion 21 that is curved so as to follow the front tire house, an extended portion 22 that extends from the front end of the curved portion 21 toward the front of the vehicle, It has. The curved portion 21 has a function of protecting vehicle parts from splashes such as stones, mud, and water caused by tires, and also has a function of rectifying the airflow flowing into the tire house during traveling. The extending portion 22 has a flat plate shape extending in the horizontal direction, and a spat 30 is attached to the lower surface thereof.

(Mounting member)
The spats 30 are so-called aerodynamic parts having a function of rectifying the airflow during traveling, and are also called tire deflectors or tire strakes. The spats 30 are made of a synthetic resin made of a material different from that of the fender liner 20 because of its functionality and a set position. In this embodiment, the spats 30 are made of a synthetic resin having elasticity. The material of the mounting member is not limited to this, and the present technology can be applied to various materials such as metal.

  As shown in FIGS. 1 and 2, the spats 30 are arranged in a posture extending in the vertical direction and the vehicle width direction in front of the tire 11, and have a function of blocking the airflow that strikes the tire 11 during traveling. And an attachment plate portion 32 for attaching the rectifying plate portion 31 to the fender liner 20. The spats 30 as a whole are plate-shaped members having an L-shaped cross-sectional view, and a mounting plate portion 32 extends from the upper end of the rectifying plate portion 31 toward the front of the vehicle.

  As shown in FIG. 2, the mounting plate portion 32 is arranged in such a manner that its plate surface is along the plate surface of the extending portion 22 of the fender liner 20 and overlaps with the lower portion of the extending portion 22. Yes. The mounting plate portion 32 is provided with an opening 34 in which a part of the fender liner 20 (a locking portion 24 described later) is locked.

  As shown in FIGS. 3 and 4, the opening 34 is a through hole that penetrates in the thickness direction (vertical direction) of the mounting plate portion 32. The opening 34 has a circular shape in plan view, and the inner diameter is constant from the upper surface to the lower surface of the mounting plate portion 32. In the spats 30, a plurality (three in this embodiment) of the openings 34 are provided in parallel in the vehicle width direction. According to such a configuration, for example, compared to a configuration in which a series of large through holes extending in the vehicle width direction is provided, a situation in which the strength of the spats 30 is impaired due to the provision of the through holes in the spats 30 is suppressed. can do. Moreover, according to such a structure, the through-hole for fastening fastening members, such as a screw previously provided in the ready-made spats 30 grade | etc., Can be used as the opening part 34. FIG.

(Mounting structure of the mounting member to the mounted member)
As shown in FIG. 4, the engaging portion 24 of the fender liner 20 is engaged with the opening 34 of the spats 30. Specifically, the locking portion 24 protrudes downward from the extending portion 22 arranged above the mounting plate portion 32 and is provided at the lower end of the shaft portion 24B. The head portion 24 </ b> A has a larger diameter than the opening 34. The locking portion 24 has a head 24 </ b> A located on the lower surface 32 </ b> B side of the mounting plate portion 32, and is locked to an opening edge 34 </ b> A on the opposite side of the opening 34 from the fender liner 20 side. The attachment plate portion 32 of the spats 30 and the extending portion 22 of the fender liner 20 are fastened at a plurality of fastening points by the plurality of openings 34 and the locking portions 24 arranged in parallel along the vehicle width direction. Such an attachment structure is formed by the following method for manufacturing the resin component 14 for a vehicle.

(Vehicle resin parts manufacturing equipment)
For the production of the resin component 14 for a vehicle, mainly, an extrusion molding apparatus (not shown) for extruding the sheet material 27, and a vacuum molding apparatus 40 for vacuum forming the fender liner 20 from the extruded sheet material 27 (FIG. 5). A trimming press device (not shown) for trimming the fender liner 20 formed by the vacuum forming device 40 is used. And the resin component 14 for vehicles is formed through these sequentially.

  As shown in FIG. 4, the vacuum forming apparatus 40 includes an upper mold (first mold) 50 and a lower mold (second mold) 60. The upper mold 50 and the lower mold 60 can be moved toward and away from each other by a driving device (not shown) (for example, an electric motor, an air cylinder, a hydraulic cylinder, etc.). Thereby, the upper mold | type 50 and the lower mold | type 60 become a structure which can mold-close and mold-open.

  A surface of the upper mold 50 facing the lower mold 60 is a molding surface 51 that follows the shape of the fender liner 20. The molding surface 51 is configured by a curved curved portion molding surface 51A having a concave shape and an extending portion molding surface 51B extending along a direction orthogonal to the mold closing direction of the upper mold 50 and the lower mold 60. As shown in FIG. 6, a plurality of suction holes 62 are formed in the molding surface 51. Each suction hole 62 communicates with a vacuum chamber 53 formed in the upper mold 50, and a pneumatic supply device (not shown) such as a pump is connected to the vacuum chamber 53.

  As shown in FIG. 6, the extended portion forming surface 51 </ b> B for forming the extended portion 22 on the forming surface 51 is provided with a raised portion 55 that is slightly raised in the shape of a truncated cone. The raised portions 55 are for forming the locking portions 24 of the fender liner 20, and are provided at three positions at positions corresponding to the openings 34 and the periphery thereof in the spats mounting step. The diameter of each raised portion 55 is sufficiently larger than the inner diameter of the opening 34 and a concave portion 64 described later.

  As shown in FIG. 6, the lower mold 60 is provided with a plug 61 at a position facing the curved portion molding surface 51 </ b> A for molding the curved portion 21 on the molding surface 51. And the press member 63 is provided in the position which adjoins the plug 61 and opposes the three raised parts 55, respectively.

  As shown in FIG. 6, the pressing member 63 has a block shape made of metal, and a plurality of the pressing members 63 are provided in parallel along the attachment plate portion 32 of the spats 30. The mounting plate portion 32 of the spats 30 can be placed across the plurality of pressing members 63. In addition, between these press members 63, cooling piping etc. which are not illustrated are arrange | positioned suitably. A concave portion 64 is provided on the upper surface 63 </ b> A of each pressing member 63 (the contact surface that contacts the spats 30 in the pressing member 63). The concave portion 64 has a circular shape in plan view having a diameter larger than that of the opening portion 34, and a plurality of (three in this embodiment) are provided corresponding to the positions of the opening portions 34. The pressing member 63 is used to form the locking portion 24 of the fender liner 20.

(Manufacturing method of resin parts for vehicles)
As shown in FIG. 9, the manufacturing method of the resin component 14 for a vehicle includes a spats forming step (attachment member forming step) for forming the spats 30, a sheet material forming step for forming the sheet material 27, and a fender from the sheet material 27. Fender liner vacuum forming step (attached member vacuum forming step) for forming liner 20, spats attaching step (attaching member attaching step) for attaching spats 30 to fender liner 20, and trimming of vacuum formed fender liner 20 A cutting step.

  In the spats forming step, the spats 30 having a plate shape with an L-shaped cross section are formed by injection molding. The opening 34 may be formed simultaneously with the injection molding, or may be formed by drilling after the injection molding. The spats forming step is not limited to this, and the spats 30 may be appropriately formed by various forming methods. This step may be performed at a place different from a series of steps described later, for example, the vehicle resin component 14 may be manufactured using ready-made spats 30.

  In the sheet material forming step, the sheet material 27 is extruded from a thermoplastic resin material by an extrusion molding device. The sheet material 27 immediately after the sheet material forming step is in a softened state in which the thermoplastic resin is heated. The sheet material 27 in this state is immediately conveyed to the vacuum forming apparatus 40 by a sheet conveying device (not shown) or the like.

  In the fender liner vacuum forming step, the fender liner 20 is vacuum formed from the sheet material 27 containing the thermoplastic resin in a heated state using the upper mold 50. Specifically, the conveyed sheet material 27 is set in the vacuum forming apparatus 40 with the upper mold 50 and the lower mold 60 opened (see FIG. 5). Then, as the upper mold 50 and the lower mold 60 are closed, the air pressure supply device is operated in a state in which the sheet material 27 is supported by the plug 61, and is applied to the sheet material 27 through the suction holes 62. Give negative pressure. The upper mold 50 and lower mold 60 mold closing operation is performed also as a mold closing operation in a spats mounting process described later. Then, the heated sheet material 27 is sucked, and the sheet material 27 is shaped following the shape of the molding surface 51. In the fender liner vacuum forming step, the deep drawing shape in the curved portion 21 of the fender liner 20 is suitably formed by the assistance of the plug 61.

  In the spats attaching step, as shown in FIG. 6, first, prior to the above-described fender liner vacuum forming step, the spats 30 having the opening 34 is previously placed on the lower side of the sheet material 27, and the opening 34 is the sheet material. Arrange to open toward In other words, the spats 30 have a posture in which the opening 34 opens toward the upper mold 50 in the vacuum forming apparatus 40. Specifically, the attachment plate portion 32 of the spats 30 is placed on the upper surface 63A of the pressing member 63, and the rectifying plate portion 31 is arranged in such a posture as to be lowered from the plug 61 side of the pressing member 63 ( (See FIG. 5). Further, in the spats mounting step of the present embodiment, as shown in FIG. 7, the spats 30 are arranged with respect to the pressing member 63 of the lower mold 60 so that the opening 34 communicates with the recess 64. At this time, the opening 34 is arranged in such a manner that the center position thereof is substantially coincident with the concave portion 64, that is, in a manner in which the opening 34 is accommodated inside the concave portion 64 in plan view. The internal spaces of the opening 34 and the recess 64 communicate with each other to define the outer shape of the locking portion 24.

  Subsequently, as shown in FIG. 8, as the upper mold 50 and the lower mold 60 are closed, the sheet material 27 and the spats 30 are formed between the raised portion 55 of the upper mold 50 and the pressing member 63 of the lower mold 60. The thermoplastic resin is caused to flow into the opening 34. Specifically, the spats 30 (mounting plate portion 32) is pressed against the lower surface 27 </ b> B of the sheet material 27 by the pressing member 63 of the lower mold 60, and the thermoplastic resin around the opening 34 is placed in the opening 34. The upper surface 27 </ b> A of the sheet material 27 is pressed by the raised portion 55 of the upper mold 50 and the thermoplastic resin is pushed into the opening 34. In this embodiment, the thermoplastic resin is further allowed to flow into the recess 64 through the opening 34. Then, the internal space of the opening part 34 and the recessed part 64 will be in the state filled with the inflowing thermoplastic resin. In addition, when a part of the sheet material 27 flows into the opening 34 and the recess 64, the thickness of the periphery of the locking portion 24 in the fender liner 20 is slightly smaller than the surrounding, following the outer shape of the raised portion 55. A thin thin portion 25 is formed.

  And the latching | locking part 24 latched by the opening part 34 is formed in the fender liner 20 by cooling and hardening the inflowing thermoplastic resin. In this embodiment, while using the pressing member 63 made of a metal having excellent thermal conductivity, by passing cooling water or the like through the cooling pipe, the locking portion 24 is efficiently cooled and cured, and the spats mounting step Can be shortened. When the locking portion 24 is formed and the portions other than the locking portion 24 in the fender liner 20 are cured to some extent, the upper mold 50 and the lower mold 60 are opened, and the fender liner 20 is adjacent to the vacuum forming apparatus 40. Then, it is conveyed to a cooling device (not shown) provided and cooled.

  In the cutting process, the surplus portion around the fender liner 20 formed by the fender liner vacuum forming process is trimmed by a trimming press apparatus. Thereby, manufacture of the resin component 14 for vehicles in which the spats 30 were attached to the fender liner 20 is completed.

(effect)
As described above, the present embodiment is a state in which the upper mold 50 is used to heat the resin component 14 for a vehicle in which the spats 30 are attached to the fender liner 20 including the thermoplastic resin. Using the fender liner vacuum forming step of vacuum forming the fender liner 20 from the sheet material 27 containing the thermoplastic resin and the lower die 60 that can be closed with respect to the upper die 50, the spats 30 are attached to the fender liner 20. A spats mounting process for mounting, in which the spats 30 having the opening 34 are arranged on the opposite side of the upper mold 50 with respect to the sheet material 27 so that the opening 34 opens toward the sheet material 27, As the mold 50 and the lower mold 60 are closed, the sheet material 27 and the spats 30 are sandwiched between the upper mold 50 and the lower mold 60 (the pressing member 63). Then, the thermoplastic resin is allowed to flow into the opening 34, and the thermoplastic resin that has flowed in is cooled and cured to form a locking portion 24 that locks the fender liner 20 with respect to the opening 34. An attachment step.

  According to this embodiment, the fender liner vacuum forming step and the spats mounting step can be performed simultaneously using one vacuum forming apparatus 40, for example, as shown in FIG. 15, after the fender liner vacuum forming step, Compared to a manufacturing method in which the spats 30 are attached to the fender liner 20 using a separate fastening member, the tact time and the number of parts for manufacturing the vehicle resin component 14 can be reduced. In particular, the vehicle 10 has a high demand for cost reduction and weight reduction, and the fender liner 20 also has a need to be formed by vacuum forming in order to reduce the cost and weight. On the other hand, when forming a fender liner by vacuum forming, it is difficult to integrally form bosses etc. for attaching separate spats, and when attaching spats to the fender liner via a separate fastening member Requires a separate process for attaching the spats after the vacuum forming process, and due to molding restrictions, it was difficult to attach the spats to the fender liner at low cost. Therefore, as a result of intensive studies, the inventors of the present application have developed the present technology capable of reducing the cost for attaching the spats 30 to the fender liner 20 when the fender liner 20 is formed by vacuum forming.

  Moreover, in this embodiment, the opening part 34 is penetrated and formed in the spats 30, and the lower mold | type 60 has the recessed part 64 in the upper surface 63A contact | abutted to the spats 30, and in the spats attachment process, the spats 30 Is arranged so that the opening 34 communicates with the recess 64 with respect to the lower mold 60, and the thermoplastic resin flows into the recess 64 through the opening 34. For this reason, the joining area of the latching | locking part 24 and the spats 30 can fully be ensured, and the joining strength of the spats 30 with respect to the fender liner 20 can be ensured suitably.

  Further, in the present embodiment, the recess 64 has an inner diameter larger than the inner diameter of the opening 34, and in the spats mounting process, the opening 34 has an opening edge 34 </ b> A opposite to the fender liner 20 side. The locking portion 24 to be locked is formed. For this reason, the joining strength of the spats 30 with respect to the fender liner 20 can be suitably ensured by the anchor effect when the locking portion 24 is locked to the opening edge 34 </ b> A of the opening 34.

  Further, in the present embodiment, the spats 30 are provided with a plurality of openings 34 in parallel, and in the spats mounting step, a plurality of openings that are respectively locked to the fender liners 20 with respect to the plurality of openings 34. The locking part 24 may be formed. According to such a configuration, the fender liner 20 and the spats 30 can be locked by the plurality of locking portions 24, and the bonding strength of the spats 30 to the fender liner 20 can be suitably ensured.

  Moreover, in this embodiment, the to-be-attached member is the fender liner 20, and the attachment member is exemplified by the spats 30 attached to the front of the fender liner 20 in the vehicle. According to this embodiment, by forming by vacuum forming, the fender liner 20 can be formed at low cost, and the inner surface is smooth and excellent in rectification in the tire house 12 can be achieved. . And by attaching the spats 30 to the fender liner 20 by the spats attachment process, the aerodynamic characteristics of the vehicle resin components 14 can be further improved without significantly increasing the cost of the vehicle resin components 14. .

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. In the present embodiment, the shape of the upper mold is different from that of the above embodiment.

  The extended portion forming surface 51B for forming the extended portion 22 on the forming surface 51 of the upper mold 150 is provided with a raised portion 155 that rises slightly in the shape of a truncated cone from the periphery. The raised portions 155 are for forming the locking portions 124 of the fender liner 20 and are provided at three positions in the spats mounting step so as to overlap with the opening 34 and its periphery. In the present embodiment, a protrusion 155 </ b> A having an outer shape that is slightly smaller than the inner diameter of the opening 34 is provided at a position overlapping the opening 34 on the lower surface of the raised portion 155.

  In the present embodiment, the protrusion 155A allows the thermoplastic resin to easily flow into the opening 34, and the locking portion 124 can be suitably formed.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. In the present embodiment, the shape of the opening of the attachment member is different from that in the above embodiment.

  The spats 230 have a diameter-expanded shape (conical shape) in which the inner diameter increases as the opening 234 moves toward the sheet material 27 in a state where the spats 230 are arranged on the side opposite to the upper mold 50 with respect to the sheet material 27. There is no. In other words, the opening 234 is an inlet of the thermoplastic resin, and on the upper side (sheet material 27 side), by increasing its inner diameter, the resin can easily flow in, and the lower side (opposite to the sheet material 27). On the side), by reducing the inner diameter, a sufficient amount of wrapping between the head 24A of the locking portion 224 and the opening edge 34A of the opening 234 can be secured.

  In the present embodiment, the thermoplastic resin easily flows into the opening 234 along the inner surface of the opening 234, and the locking portion 224 can be suitably formed. Further, in the configuration in which the locking portion 124 has the head portion 24A, the locking portion 224 can be sufficiently locked to the opening edge 34A of the opening portion 234, and the bonding strength between the fender liner 20 and the spats 230 is sufficient. Can be secured.

<Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. In the present embodiment, the shape of the opening of the attachment member is different from that in the above embodiment.

  The opening 334 has a rectangular shape in plan view, and is provided so that its longitudinal direction is along the vehicle width direction. According to such a configuration, for example, as compared with the case where a plurality of openings 334 having a circular shape in plan view are provided in parallel in the vehicle width direction as in the first embodiment, the locking portions 324 and the openings 334 are provided in front of the vehicle. The amount of wrapping of the opening edge 34A can be increased.

  In the present embodiment, the amount of lap between the locking portion 324 and the opening edge 34A of the opening 334 in the vehicle front-rear direction can be suitably ensured, and the airflow during travel causes the rectifying plate portion 31 of the spats 330 from the front of the vehicle. Even when this force is applied, the situation where the spats 330 come off from the fender liner 20 can be suitably suppressed.

<Embodiment 5>
Next, Embodiment 5 of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. In the present embodiment, the shape of the opening of the attachment member is different from that in the above embodiment.

  The opening 434 is recessed in the upper surface 32 </ b> A (surface on the sheet material 27 side) of the mounting plate portion 32. As such an opening 434, in the present embodiment, a groove configured in a lattice shape is illustrated. Note that the opening 434 is not limited to this, and may be a plurality of concave portions arranged in a dot shape, or a shape obtained by cutting a part of the upper surface 32A of the mounting plate portion 32 into a rough surface. Good. In the present embodiment, the locking portion 424 is formed in such a manner that the thermoplastic resin only flows into the spats 430 and does not flow to the pressing member 63 side.

<Embodiment 6>
Next, Embodiment 5 of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. In the present embodiment, the shape of the opening of the attachment member is different from that in the above embodiment.

  The spats 530 are arranged on the side opposite to the upper mold 50 with respect to the sheet material 27, and the diameter of the spats 530 decreases so that the inner diameter increases as the opening 534 moves toward the side opposite to the sheet material 27 (reversely). It has a mortar shape. The upper surface 63A of the pressing member 63 (the contact surface that contacts the spats 30) does not have the recess 64 and is a flat surface. In the present embodiment, the locking portion 524 is locked to the inner peripheral surface 34B of the opening 534 instead of the opening edge 34A of the opening 534. Such a configuration can be suitably applied when, for example, the plate thickness of the attachment plate portion 32 of the spats 530 is sufficiently thick.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the said embodiment, although the part in which the spats were attached with respect to the fender liner was illustrated as a resin part for vehicles, it is not restricted to this. For example, it may be a component to which a cover member that covers the side of the engine with respect to the engine under cover is attached. Further, the mounting member does not have to be a functional component that performs a function alone. For example, the mounting member has a plate shape, and the thickness of the mounted member is partially increased to be attached to reinforce the mounting member. It may be a part or the like.

  (2) In the above embodiment, the fender liner vacuum forming step and the spats mounting step are performed simultaneously, but the present invention is not limited to this. For example, the fender liner vacuum forming step may be performed after the spats attaching step by appropriately changing the timing of each step.

  (3) Besides the above embodiment, the method for manufacturing a resin component for a vehicle can be appropriately changed without departing from the gist of the present invention. For example, a sheet material containing a thermoplastic resin in a heated state is not limited to one formed by a sheet material extrusion molding process, and is formed by appropriately heating a material that has been processed into a sheet shape in advance with a heater or the like. May be.

  (4) In addition to the above embodiment, the vehicle resin component manufacturing apparatus can be changed as appropriate without departing from the gist of the present invention. In the said embodiment, although the structure which an upper mold | type has a swell part in a molding surface was illustrated, the structure which does not have a swell part may be sufficient. Further, the arrangement, shape, and driving method of the first mold and the second mold can be appropriately changed.

  (5) The material of the sheet material is not limited to those exemplified in the above embodiment, and can be changed as appropriate. For example, a sheet material may be used that is formed by impregnating a fiber with a thermoplastic resin (for example, polypropylene or the like).

  DESCRIPTION OF SYMBOLS 14 ... Resin parts for vehicles, 20 ... Fender liner (attached part), 24, 124, 224, 324, 424, 524 ... Locking part, 27 ... Sheet material, 30, 230, 330, 430, 530 ... Spats ( Mounting parts), 34, 234, 334, 434, 534 ... opening, 34A ... opening edge, 50, 150 ... upper mold (first molding mold), 60 ... lower mold (second molding mold), 63 ... pressing member 63A ... Upper surface, 64 ... Recess

Claims (6)

In a method of manufacturing a resin component for a vehicle in which a mounting member is attached to a mounted member containing a thermoplastic resin,
Using a first mold, a mounted member vacuum forming step for vacuum forming the mounted member from a sheet material containing the thermoplastic resin in a heated state;
A mounting member mounting step of mounting the mounting member to the mounted member using a second molding die that can be closed with respect to the first molding die;
The mounting member having an opening is disposed on the side opposite to the first mold with respect to the sheet material in a posture in which the opening opens toward the sheet material,
As the first molding die and the second molding die are closed, the sheet material and the mounting member are sandwiched between the first molding die and the second molding die, and the thermoplastic resin Into the opening,
A mounting member mounting step of forming a locking portion locked to the opening by the mounted member by cooling and curing the thermoplastic resin that has flowed in. Method. The mounting member has the opening formed therethrough,
The second mold has a recess on a contact surface that contacts the mounting member,
In the mounting member mounting step, the mounting member is disposed with respect to the second mold so that the opening communicates with the recess, and the thermoplastic resin flows into the recess through the opening. The manufacturing method of the resin component for vehicles of Claim 1 made to make. The recess has an inner diameter larger than the inner diameter of the opening,
The method for manufacturing a resin component for a vehicle according to claim 2, wherein, in the mounting member mounting step, the locking portion that is locked to an opening edge of the opening that is opposite to the mounted member side is formed. .   The mounting member has a diameter-expanded shape such that the inner diameter of the mounting member increases toward the sheet material side in a state of being arranged on the side opposite to the first mold with respect to the sheet material. The method for manufacturing a resin component for a vehicle according to any one of claims 1 to 3. The mounting member is provided with a plurality of the openings in parallel,
The vehicle according to any one of claims 1 to 4, wherein, in the attachment member attachment step, a plurality of the engagement portions that are respectively engaged with the attachment target members with respect to the plurality of the opening portions are formed. Of resin parts for automobiles. The attached member is a fender liner,
The method for manufacturing a resin component for a vehicle according to any one of claims 1 to 5, wherein the attachment member is spats attached to the front side of the fender liner.

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