JPS59182715A - Preparation of head rest for automobile - Google Patents

Abstract

PURPOSE:To obtain a head rest or a hollow molded piece by a method wherein a metal fitting for a head rest is lifted near the bottom of a mold and covered with the parison drawn out of the mold and the split molds are shut on both sides of the metal fitting to inject air into the parison. CONSTITUTION:A lifting mandril 2 is provided on the bottom of a mold 1 and a metal fitting 4 for fitting legs of a head rest is erected on a base 3 mounted on the mandril 2. After the mandril 2 is lifted, the segment excepting the lower end parts of the legs 5, 5' of the metal fitting 4 is covered with the parison 10 drawn out of the mold 1 and then the split molds 12, 12' are shut according to a normal method and air is injected from air spray nozzles 9, 9' into the mold to blow-mold a head rest skin 11.

Description

[Detailed description of the invention] The present invention relates to a method of manufacturing an automobile headrest.

The purpose is to simplify and save the headrest manufacturing process and labor, thereby promoting mass production.

Conventionally, this type of headrest is made by cutting and sewing leather or cloth, or by blow molding.

Separately assembled metal fittings are inserted into the synthetic resin skin formed by rotational molding, etc., and all of the foaming liquid is injected into the skin while temporarily fastening, etc., and the foaming process is performed. The drawback was that it required many steps and effort to obtain the headrest metal with mounting hardware through intradermal filling, which hindered mass production.

The invention is intended to completely eliminate the drawbacks of molding the headrest skin with four mounting hardware entirely in one piece.

To explain in detail with the attached example drawings below, the die 1
All the fixing bases 6 are installed on the mandrill 2 that moves up and down below, and all the mounting hardware 4 that will become the mounting legs of the headrest are inserted on the fixing base. an intermediate part 6 that communicates between ' and the pillar part 5.5' at the upper part;
It has a horizontal plate 7.7"!r installed between the upper parts of the pedestal part 5.5' and is formed in the shape of a torii gate when viewed from the front. Note that 8 and 8' are inserts that also serve as stoppers? 0, 9, 9' is an air blowing nozzle whose lower end is connected to the fixed base 3. After the mounting hardware 4 is placed at a predetermined position 14 under the die 1 by the upward movement of the mandrill 2, At that point, the lower ends of the pillar parts 5, 5' are covered with the parinon 10 drawn out from the die 1, and the opening/closing split molds 12, 12' for forming the skin 11 are closed according to the usual method, and air is applied. Air is injected into the mold from the blow nozzle 9,9' to hollow-form the headrest bow 11.

In this way, the automobile headrest, in which the lower ends of the pillar parts 5, 5' of the mounting hardware 4 are combined, is molded as one piece.
Become.

When the molding is completed, the mandrill 2 is fully lowered to remove the vibrators 8 and 8' for insertion and the fixing base 3 from the mounting hardware 4, and the split molds 12 and 12' are opened and taken out to the headrest. .

Is the lower part of the epidermis 11 an air blowing nozzle? , 9' are left behind, and the entire foaming liquid is injected from there, and the foam 14VC produced by the foaming is applied to the epidermis 11.
It fills the inside.

When inserting a mounting hardware 4 larger than the green cylinder shape of Parinon 10, install the expansion devices 15 and 15' that move up and down to open and close the fixed base 30 in the order shown in Fig. 5. Enter the parison 10 yen in an upward motion, open it in the front and back direction, expand the parison 10 from the shape of ``open'' to the shape of ``C'', and then move the 1st footrest 3 upward to expand -C. Insert the mounting hardware 4 into the Balinon 10' and open/close the split mold 12.
, 12' are lowered and retracted to their original positions for molding. In this way, the occurrence of cracks in the molding company style 11 can be minimized as much as possible. can.

6 to 8, the mounting hardware 4 is formed with a plate-shaped leg portion 4a and a rectangular plate 4b on the top of the plate-shaped leg portion 4a, and a fixed base 3 is formed in the shape of a letter T+1.
It is completely shown that insert molding is carried out by inserting and supporting the upper part.

In any case, according to the invention, when hollow molding the automatic single-use headrest, the mounting hardware is integrally molded with 4 full/1-inch lengths, which simplifies the manufacturing process of the headrest and saves labor. 0

[Brief explanation of drawings]

Fig. 1 is a perspective view of the headrest with mounting hardware manufactured by an uninvented method installed on the chair, Fig. 2 is a longitudinal sectional front view of the headrest, and Fig. 6 is the side M side of the headrest. Front view, Figure 4 is a side sectional view showing the I'111i footrest fully moved, all the mounting hardware covered with a balisong, Figure 5 A, Mouth, Mouth', Ha, Ha', 2 is a diagram showing an example of the operation of the Ballin expansion device, Figure 6 is a side sectional view showing an example of insert molding of the T-shaped plate-shaped mounting bracket, and Figure 7 is a pJJ
, the longitudinal sectional front view of the headrest, and Figure 8 are the same. Side sectional view, 1 is a die, 2 is a mandrill, 3 is a fixed stand,
4 is the mounting hardware, 9 and 9' are the air blowing nozzles s1
0 is parison, 11 is skin, 12.12' is open/close split mold%
13, 13' is stinger 1-mouth, 14 is emanation body, 15.15'
It's an expansion device, and it's chill. Applicant for the watch Hiroshi Araki 11 Figure 5 Figure 4 + 5 Figure 5 A Figure 5. ．． d mouth 5120' 5th (fJ1 ゛ 躬 5 - always da l/,
' 0) B 10' Procedural amendment (formality) Director of the Patent Office Kazuo Wakasugi1, Indication of the case Japanese Patent Application No. 55293 of 19813, Person making the amendment Relationship with the case Patent applicant Yoji Araki4, Agent (1) Amend all 7 techniques from the 1st character of the 5th line on page 5 of the specification to "Fig. 5 Irohani" to "Fig. 5 Irohaniho." (2) Correct ``4''' to ``ha'' in the 4th character of the 7th line of the same page. (3) Correct the 9th trick "ha'" on the same page to "ho". (4) From page 7, line 2, character 19 to character 11 on the next line, "Figure 5 I, mouth, mouth', ha, ha', 2" wo "Figure 5 I,
Correct to "mouth, ha, two, ho, he". (5) The figure number of Figure 5 of the drawing is written in red on a separate copy.
Correct to A. Figure 5 I

Claims (1)

[Claims] Open/close split type 12. The mounting hardware 4 is inserted onto a fixed base 6 that moves up and down in the lower part of the opening/closing path, and the hanging hardware 4 is covered with a hanging parison 10 that is fed out from the die 1, leaving only the lower end of the mounting hardware 4. A method for producing a headrest for an automobile, characterized in that the split molds 12, 12' are closed, and air is completely injected into the mold to perform hollow molding of the entire headrest skin containing the mounting hardware 4.