JP3197846B2 - Sun visor manufacturing apparatus and manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a good sun visor applied to an automobile and the like, a manufacturing apparatus and a manufacturing method for manufacturing the sun visor.

[0002]

2. Description of the Related Art A conventional sun visor as shown in FIGS. 5 and 6 has been developed. According to this,
Reference numeral 1 denotes a sun visor main body. The sun visor main body 1 is mainly composed of a resin core material 2 formed by foaming a synthetic resin foam material and a skin member 3 covering the outer surface of the resin core material 2.

The resin core material 2 is formed by foaming a bead-like resin material having a high expansion ratio (usually about 20 times) in order to improve the feeling of use, and is intended not to have much rigidity. I have.

[0004] Therefore, in order to provide a certain degree of shape retention due to low rigidity, the reinforcing wire frame 4 is run vertically and horizontally to perform insert molding.

[0005]

Therefore, the conventional sun visor 1 has a heavy weight and a high cost because the reinforcing wire frame 4 stretched vertically and horizontally is inserted into the resin core material 2. I didn't get it.

If a bead-like foamed resin material having a higher expansion ratio is used in order to make the resin core material 2 having lower rigidity and flexibility, the resin core material 2 is vertically and horizontally embedded in the resin core material 2 during molding. The reinforcing wire frame 4 running in the way hinders the propagation of the resin material throughout the molding cavity,
Since the resin core material 2 having a predetermined shape cannot be formed, there is a limit even if the resin core material 2 has low rigidity and flexibility.

Accordingly, the present invention has been made in view of such a conventional technique, and does not use a reinforcing wire frame, or even if it is used, a reinforcing wire frame is provided on a part of a resin core material to reduce weight and weight. Minimize cost increase, and
An object of the present invention is to provide a sun visor capable of freely selecting the softness of a resin core material, a manufacturing apparatus and a manufacturing method for manufacturing the sun visor.

[0008]

Means for Solving the Problems To achieve the above object, a first aspect of the present invention is to provide a first resin core formed by foaming and melting a bead-like resin material having a low expansion ratio; When molding a resin core material of a sun visor body composed of a second resin core material formed by foaming and melting a bead-shaped resin material having a high expansion ratio so as to be integrated with the first resin core material, A pair of molding dies forming a cavity for molding the resin core material main body, and one of the two molding dies being provided so as to be able to enter and exit the cavity, and dividing the cavity into two parts Low-foaming for forming a first resin core material made of a bead-like low-expansion-ratio resin material on one of the divided cavities formed by dividing the cavity by the partition plate. Magnification beaded resin material A first filling port Kyusuru, bead-like high expansion ratio second resin core member the first made of a resin material
And a second filling port for supplying a bead-shaped resin material having a high expansion ratio to be integrally formed with the resin core material of the first embodiment.

A second invention is a first resin core material formed by foaming and melting a bead-like resin material having a low expansion ratio, and beads having a high expansion ratio so as to be integrated with the first resin core material. When molding a resin core material body of a sun visor body composed of a second resin core material formed by foaming and melting a resinous material,
When manufacturing the resin core material of the sun visor body in which the surface of the resin core material made of a synthetic resin foam material is covered with a skin material, first, a pair of molding dies are clamped to form the resin core material. Is formed, the cavity is divided into two by a partition plate, one of the divided cavities is filled with a bead-shaped resin material having a low expansion ratio, and the other is filled with a bead-shaped resin material having a high expansion ratio. Then, the partition plate is pulled out from the cavity, the beaded resin material having a low expansion ratio and the beaded resin material having a high expansion ratio filled in the cavity are steam-heated to foam and melt both resin materials, Thereafter, the method is a method for manufacturing a sun visor in which the molds are cooled, the molds are opened, and the molded resin core material body is taken out.

As a result, the present invention provides a first resin core formed by foaming and melting a bead-shaped resin material having a low expansion ratio, and a first resin core formed of a resin core body of a sun visor body. By forming a bead-shaped resin material having a high expansion ratio and foaming and melting so as to be integrated with the second resin core material, the first resin core material has high rigidity, and As a result, the sun visor body is attached to the vehicle body at the tip of the first resin core material at best, without the need for a reinforcing frame that is stretched over a wide area of the resin core material as in the prior art. It suffices to embed a reinforcing wire frame that also serves as a pivot that pivotally supports, enabling weight reduction without sacrificing rigidity. Propagation in the cavity during molding can be performed smoothly Is, for example the second resin core member 2
It is possible to use a bead resin material having a high expansion ratio of 0 times or more, thereby making it possible to improve the flexibility and feel of a portion that a user frequently touches during operation.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1) FIG. 1 is a plan view of a sun visor according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG.

1 and 2, reference numeral 10 denotes a sun visor main body, which is a resin core main body 1 made of a synthetic resin foam material.
1 and a skin material 12 covering the entire surface of the resin core material body 11.

The resin core material body 11 includes a first resin core material 13.
And the second resin core material 14. The first resin core material 13 is formed by foaming and melting a bead-shaped resin material having a low expansion ratio, for example, 10 to 20 times. On the other hand, the second resin core material 14 has a high expansion ratio of, for example, 30 to
It is formed by foaming and melting a beaded resin material having a foaming ratio of 40 times.

A reinforcing wire frame 1 serving also as a support shaft for pivotally supporting the sun visor body 10 rotatably with respect to a vehicle body (not shown) is provided on the tip end side of the first resin core material 13.
5 is buried by being inserted at the time of molding the first resin core material 13.

Next, an apparatus for manufacturing the sun visor body 10 configured as described above will be described with reference to FIG.

This manufacturing apparatus is, for example, an injection molding apparatus, and has a pair of molding dies 16 and 17 forming a cavity 18 for molding the resin core material body 11.

One of the pair of molding dies 16 and 17 is a fixed mold and the other molding dies 17 is a fixed mold.
Is a movable die operated by the cylinder devices 19, 19 so that the one molding die 16 can be clamped and opened.

The other molding die 17 has a cavity 18
The partitioning plate 20 that divides into two transversely to the short side direction is installed so that it can be freely moved in and out by the cylinder device 21.

A pair of filling ports 22 and 23 are formed in one molding die 16, and the filling port 22 is formed of the first resin core material in the cavity 18 divided by the partition plate 20. First split cavity 18 for molding 13
An opening is provided on the a side to supply a bead-shaped resin material having a low expansion ratio.

The other filling port 23 is provided between the second resin core material 1 and the cavity 18 divided by the partition plate 20.
4 is opened to the side of the second divided cavity 18b for molding, and a bead-shaped resin material having a high expansion ratio is supplied.

Further, one molding die 16 has a heating air / cooling air supply port 24 for supplying steam heating air and cooling air inside the cavity 18, and both resin materials in the cavity 18. Ventilation means 25 is provided for letting out gas generated when the gas bubbles.

Next, a process of manufacturing a resin core material by the sun visor manufacturing apparatus having the above-described configuration will be described with reference to FIG. FIG. 4 is a time chart diagram for explaining the manufacturing process of the resin core material main body 11, and the horizontal axis is the time axis.

First, the molding dies 16 and 17 are clamped as shown in FIG. 3 to form a cavity 18 for molding the resin core material body 11, and the cylinder device 21 is operated in the cavity 18 by operating the cylinder device 21. The partition plate is pulled in to divide the cavity 18 into two cavities 18a and 18b.

Next, one of the divided cavities 18a is filled with a beaded resin material having a low expansion ratio, and the other divided cavity 18b is filled with a beaded resin material having a high expansion ratio.

Thereafter, the partition plate 20 is pulled out of the cavity 18, and steam heating air is blown into the cavity 18 from the heating air / cooling air supply port 24, and the beads having a low expansion ratio filled in the cavity 18 are discharged. The foamed resin material and the beaded resin material having a high expansion ratio are steam-heated to foam and melt both resin materials. After a certain period of time, the heating and cooling air supply ports 24 are switched to cooling air to supply and cool. . During the steam heating step and the cooling step, since both the molding dies 16 and 17 are kept in a state of being clamped, even at the part which is the space after drawing out the partition plate 20,
Both resin materials propagate, and the first resin core material 13 and the second resin core material 14 adhere to each other and are integrally formed.

The gas generated during foaming of both resin cores is sequentially discharged to the outside by the ventilation means 25.

After the cooling has been performed for a predetermined time, the other mold 17 is moved and opened by the cylinder device 19 with respect to the one mold 16 and the molded resin core body 11 is opened. Is taken out of the cavity 18, and the molding of the resin core material main body 11 is completed.

It should be noted that the resin core material main body 1 is provided in the cavity 18.
By placing the reinforcing wire frame 15 on the divided cavity 18a side in advance before filling the two resin materials forming the resin wire 1, the reinforcing wire frame 15 can be inserted simultaneously with molding.

According to the above-described embodiment, the resin core body 11 of the sun visor body 10 is made of the first resin core 13 formed by foaming and melting a bead-like resin material having a low expansion ratio. A second resin molded by foaming and melting a bead-shaped resin material having a high expansion ratio so as to be integrated with the first resin core material 13.
The first resin core 13 has high rigidity and has shape-retaining properties by being composed of the resin core 14 of the first embodiment, and is spread over a wide range of the resin core as in the related art. No reinforcing frame is required, and the reinforcing wire frame 15 serving also as a support shaft for rotatably supporting the sun visor body 10 with respect to the vehicle body is provided at the tip end side of the first resin core material 13 at most.
Can be buried, the weight can be reduced without reducing the rigidity, and since the number of reinforcing wire frames 15 is reduced, the propagation in the cavity 18 during molding of the resin core body 11 is smooth. The bead resin material having a high expansion ratio of, for example, 20 times or more can be used for the second resin core material 14, so that the user can easily touch and touch the portions that are frequently touched during operation. Can be better.

[0031]

According to the present invention, the resin core material body of the sun visor body is composed of the first resin core material and the second resin core material integrally arranged in the longitudinal direction thereof, The resin core material is formed by foaming and melting a bead-shaped resin material having a low expansion ratio, and the second resin core material is formed by foaming and melting a bead-shaped resin material having a high expansion ratio. The first resin core material has a high rigidity and a shape-retaining property, and does not require a reinforcing frame extending over a wide area of the resin core material as in the prior art. It is enough to embed a reinforcement wire frame that also serves as a support shaft that pivotally supports the sun visor body rotatably with respect to the vehicle body, at the tip end side of the core material, it is possible to achieve weight reduction without reducing rigidity, Moreover, by reducing the number of reinforcement frames,
The propagation in the cavity during the molding of the resin core material can be carried out smoothly, and for example, a bead resin material having a high expansion ratio of 20 times or more can be used for the second resin core material, The part that the user often touches during the operation can be made flexible and feel good.

[Brief description of the drawings]

FIG. 1 is a plan view showing a sun visor body according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a longitudinal sectional view schematically showing a manufacturing apparatus for manufacturing the above embodiment of the present invention, showing a mold clamping state.

4 is a time chart diagram for explaining a manufacturing process when manufacturing a resin core material main body by the manufacturing apparatus shown in FIG. 3;

FIG. 5 is a plan view showing a conventional sun visor body.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sun visor main body 11, 31 Resin core material main body 12 Skin material 13 First resin core material 14 Second resin core material 15 Reinforcement wire frame 16, 36 One molding die 17, 37 The other molding die 18 Cavity Reference Signs List 20 Partition plate 22, 23, 33 Filling port 24 Heating / cooling air supply port 25 Ventilation hand

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60J 3/02

Claims (2)

(57) [Claims] 1. A first resin core material formed by foaming and melting a bead-like resin material having a low expansion ratio, and a bead-like resin material having a high expansion ratio so as to be integrated with the first resin core material. When molding the resin core material of the sun visor body composed of the second resin core material formed by foaming and melting, a pair of molding dies forming a cavity for molding the resin core material body of the sun visor, A partition plate that is provided in one of the molding dies so as to be able to enter and exit the cavity, and that divides the cavity into two. A first filling port for supplying a bead-like resin material having a low expansion ratio for forming a first resin core material made of a bead-like low expansion ratio resin material, and a bead-like high foaming portion; 2nd made of magnification resin material And a second filling port for supplying a bead-shaped resin material having a high expansion ratio for integrally forming the resin core material with the first resin core material. 2. A first resin core formed by foaming and melting a bead-shaped resin material having a low expansion ratio, and a bead-shaped resin material having a high expansion ratio integrated with the first resin core. When molding the resin core body of the sun visor body composed of the second resin core material formed by foaming and melting, the sun visor body obtained by covering the surface of the resin core material made of a synthetic resin foam material with a skin material When the resin core material is manufactured, first, a pair of molding dies are clamped to form a cavity for molding the resin core material, and the cavity is divided into two by a partition plate. Fill the bead-shaped resin material with a low expansion ratio, fill the other divided cavity with the bead-shaped resin material with a high expansion ratio, and then withdraw the partition plate from the cavity, and fill the cavity with the low expansion ratio. The bead-shaped resin material and the bead-shaped resin material having a high expansion ratio are steam-heated to foam-melt the two resin materials, and then cooled, and then the both molds are opened to form the molded resin core material. A method of manufacturing a sun visor in which a main body is taken out.