JPH05213235A - Air spoiler for automobile and manufacture thereof - Google Patents

Abstract

PURPOSE:To produce a product for which the number of finishing processes to remove protrusion weld burrs during heat welding of upper and lower parts by a hot plate device is reduced during manufacture of an air spoiler, and high design properties and improved yield may be achieved. CONSTITUTION:An upper part 1 and a lower part 2, both having ribs for weld, are formed throughout an inner peripheral edge by injection moulding of a thermoplastic synthetic resin material, and a long piece-form molding is attached to a mating seam between the peripheries of the upper and lower parts 1 and 2 to form an air spoiler A for an automobile. And the upper and lower parts having ribs 1' and 2' for weld are formed throughout an internal peripheral edge by using a thermoplastic synthetic resin material through injection molding. A molding 3 formed at the end surface of a mating surface between the peripheries of the lower and upper parts through extrusion molding is fixed by means of a fixing means, such as a fixing boss, an adhesive, and a double-face adhesive tape. Thereafter, the ribs 1' and 2' for weld formed on the upper and lower parts are heated and molten by a hot plate device to weld together the upper and lower parts for integral formation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air spoiler for providing stability during high speed operation of an automobile and a method for producing the same.

[0002]

2. Description of the Related Art An air spoiler of this type is generally manufactured by blow molding so as to be hollow, but the surface of the air spoiler is rough as a product, and therefore it is necessary to polish the entire surface. And as an improvement of such products,
The applicant of the present application filed Japanese Patent Application No. 1-326716 (Japanese Patent Application Laid-Open No. 3-1
(No. 87730) As a "method for manufacturing a hollow air spoiler", the upper and lower parts are pressed and welded through a hot plate device to be united, and at that time, the synthetic resin material protruding to the outside is removed to obtain a product. I am applying for a method.

[0003]

In the manufacture of an air spoiler for automobiles, when the above-mentioned upper and lower parts are heat-welded by a hot plate apparatus, a welding burr sticks out at the joint, so that the removal treatment is required. Although it takes time and labor, the present invention aims to reduce the finishing process and efficiently provide an air spoiler for automobiles having high designability.

[0004]

[Means for Solving the Problems] By injection molding a thermoplastic synthetic resin material, an upper part and a lower part having welding ribs are formed over an inner peripheral edge, and a long part is formed at a joint around the upper part and the lower part. By using an air spoiler for automobiles and a thermoplastic synthetic resin material, which are characterized by attaching a strip-shaped molding, by injection molding, forming an upper part and a lower part having welding ribs over the inner peripheral edge, and surrounding the lower part The molding formed by extrusion molding is fixed to the end surface of the joint with the upper part by fixing means such as fixing boss, adhesive, double-sided tape, and then the welding ribs provided on the upper and lower parts are heated. It is heated and melted by a plate device, and the upper and lower parts are welded together to make a unit, and a method for manufacturing an automobile air spoiler and injection molding of a thermoplastic synthetic resin material are used to weld the inner peripheral edge. An upper part and a lower part having ribs are formed, and the welding ribs provided on the upper and lower parts are heated and melted by a hot plate device, and the upper and lower parts are welded together to form an extrusion molding with an insert piece on the upper part. A method for manufacturing an air spoiler for an automobile, characterized by being formed by being fitted between lower parts.

[0005]

According to the manufacturing method of the air spoiler of the present invention, the finishing process is not particularly required, and therefore, the finishing process is reduced, while the molding molding in which the bright foil is previously laminated or coated is assembled. By giving the formula to the formula, it is possible to easily obtain an air spoiler having high designability and good yield in producing a product.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a hollow air spoiler of the present invention.
(A) shows the whole, which is a two-part structure as shown in the cross section in FIG. 1 of FIG.
It consists of (2). These span the inner perimeter,
It has ribs (1 '), (2') for welding, is molded from a thermoplastic synthetic resin material by an injection molding method, and is subjected to surface treatment such as painting. Next, create separately by extrusion molding or injection molding,
As shown in FIG. 3, a molding (3) provided with a coating layer (a) preliminarily laminated with glitter foil or coated is prepared, and FIG.
A fixing boss (e) is provided on the outer periphery of the lower part (2) as shown in, or the molding (3) is fixed by using an adhesive, a double-sided tape or the like. (b) is an accessory provided on the mall (3). Then, as shown in FIG. 5, a hot plate device [a heater plate (5) described later] is placed between the upper part (1) and the lower part (2) to join them. That is, FIG. 6A shows the fixing jigs (4), (4 ').
The upper part (1) and the lower part (2) are shown in the set state.The fixing jigs (4) and (4 ') are structured to be operated vertically by pneumatic pressure, hydraulic cylinders, or mechanically. ..

Then, as shown in FIG. 6 (b), a heater plate
Set (5) between the upper part (1) and the lower part (2). The heater plate (5) has welding ribs (1 ') on the upper part (1) and the lower part (2),
In order to heat and melt the surface of (2 '), a temperature control heater (6) that can set the temperature suitable for the thermoplastic resin material is installed. This temperature control heater
The surface of (6) is coated with a Teflon coating layer (7). Then, as shown in FIG. 6 (c), the heater plate (5) is set to a value corresponding to the melting temperature of the thermoplastic resin material to be welded, and the upper and lower fixing jigs (4), (4 ') are pressurized. .. Ribs for welding here
After dissolving (1 ') and (2') about 0.5 to 3 mm, FIG. 6 (d)
The heater plate (5) is quickly removed as shown in Fig. 7, and the upper part (1) and the lower part (2) are brought into close contact with each other as shown in Fig. 7. At this time, the welding ribs (1 ') and (2') are in close contact and
Since (f) is formed inside the product (P), the welded flash (f) does not protrude between the upper part (1) and the lower part (2) on the outside thereof. Then, after an appropriate period of time, the product (P) is taken out from these fixing jigs (4) and (4 ') to complete the product. The upper part (1) and the lower part that were initially heat-welded
Paint the product of (2), prepare a molding (3 ') with an insertion piece (3a) at the tip of the accessory piece (b) as shown in FIG. 8, and as shown in FIG. , Rear upper part (1), lower part (2)
It can also be fitted between the products (P '). FIG. 9 is a sectional view showing a part of the product (P ′) to which the molding (3 ′) of FIG. 8 is attached.

[0008]

According to the present invention, it is not necessary to remove the burrs generated when the upper and lower parts are welded, and a molding is added to the outer periphery to impart strength and a high design. It is possible to efficiently provide an air spoiler for vehicles with high added value.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire air spoiler of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line II-II ′ of FIG.

FIG. 3 is a partially enlarged perspective view of the mall.

FIG. 4 is an explanatory view showing a state where an extrusion molding is attached to the lower part of the present invention.

FIG. 5 is an explanatory view of the manufacturing situation of the present invention.

FIG. 6 is a diagram illustrating a process of manufacturing the product of the present invention.

FIG. 7 is a diagram illustrating a final step of manufacturing the product of the present invention.

FIG. 8 is a partial perspective view of another example of the molding.

9 is a cross-sectional view showing a part of the product to which the molding shown in FIG. 8 is attached.

[Explanation of symbols]

 (A) Air spoiler (1) Upper part (2) Lower part (1 ') Welding rib (2') Welding rib (3) Mold (3 ') Mold (3a) Insert piece (4) Fixing jig ( 4 ') Fixing jig (5) Heater plate (6) Temperature control heater (7) Teflon coating layer (P) Product (P') Product (a) Coating layer (b) Attachment piece (e) Fixing boss (f) Welding flash

Claims (3)

[Claims] 1. A thermoplastic synthetic resin material produced by injection molding,
An air spoiler for an automobile, characterized in that an upper part and a lower part each having a rib for welding are formed along an inner peripheral edge, and a strip-shaped molding is attached to a joint around the upper part and the lower part. 2. A thermoplastic synthetic resin material produced by injection molding,
Forming an upper part and a lower part having a welding rib over the inner peripheral edge, and on the end face of the joint with the upper part around the lower part,
A molding formed by extrusion molding or the like is fixed by a fixing boss, an adhesive, a fixing means such as a double-sided tape, and then the above-mentioned upper and lower parts are heated and melted by a hot plate apparatus for welding ribs. A method for manufacturing an air spoiler for automobiles, characterized in that the lower parts are welded together to form a unit. 3. A thermoplastic synthetic resin material produced by injection molding,
An upper part and a lower part having welding ribs are formed along the inner peripheral edge, and the welding ribs provided on the upper and lower parts are heated and melted by a hot plate device, and the upper and lower parts are welded and united with an insert piece. A method for manufacturing an air spoiler for an automobile, characterized in that the extruded molding of (1) is fitted between an upper part and a lower part to be formed.