JPH0570915U - Headrest mold - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a headrest molding die that prevents product damage and defective release during product opening. A movable lower mold 22 and a movable upper mold 23 are included, and a cushion body 35 is set in advance on a mold surface 32 of the movable lower mold 22, and a foaming resin material is injected into the mold to form the cushion body. In a mold in which the headrest is integrally molded, on the mold surface 33 of the movable upper mold 23, a molded product is attached to the movable lower mold after molding and is prevented from moving while being attached to the lower mold. The locking projection 40 is formed so as to project and lock into the molded product.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a mold for a headrest.

[0002]

[Prior Art]

 In a headrest of an automobile or the like, a headrest in which a soft cushion layer is formed at the head-contacting position on the front side of the headrest has been proposed in order to soften the contact with the human head and enhance the softness and luxury. ing.

As shown in FIG. 4, a molding die 50 for manufacturing such a headrest is composed of a mold 51 including a movable lower mold 52 and a movable upper mold 53, and a lid mold 54. It has a defining cavity 55. Reference numeral 56 is a fixed lower mold, 57 is a hinge for opening and closing the movable lower mold 52, 58 is a hinge for forming the movable upper mold 53 so as to be openable and closable, and 59 is a hinge for forming the lid mold 54 so as to be openable and closable.

Then, after a cushion body 65 made of polyurethane foam slab or the like is set in advance on the die surface 62 of the movable lower die 52, the foamed resin material P constituting the headrest body is injected into the die to inject the cushion body. It is foam-molded integrally with 65. Reference numeral 61 is a core. The headrest molded product manufactured by the molding die having such a structure is released from the movable lower mold 52, the lid mold 54, and the movable upper mold 53 in this order, and then demolded.

However, the movable lower mold 52 has stopper plates 66, 66 for fixing the cushion body as shown in the figure, which are formed in an acute angle in the mold opening direction. At that time, the headrest molded product was sometimes attached to the stop plate 66 of the movable lower mold 52 and pulled. As a result, it was difficult to remove the mold, and the headrest molded product was sometimes torn and broken in the vertical direction.

[0006]

[Problems to be solved by the device]

 The present invention has been proposed in view of the above problems, and an object thereof is to provide a headrest molding die that prevents damage to the product and defective demolding when the product is opened.

[0007]

[Means for Solving the Problems]

 That is, the present invention includes a movable lower mold and a movable upper mold, and a cushion body is set in advance on the mold surface of the movable lower mold, and a foaming resin material is injected into the mold to be integrated with the cushion body. In the mold in which the headrest is molded into the mold, the movable upper mold is molded on the mold surface so that the molded product does not move while being attached to the lower mold when the movable lower mold is opened after molding. The present invention relates to a headrest molding die, characterized in that a locking projection is formed to project and lock into a product.

[0008]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a headrest manufactured by the headrest molding die of the present invention, FIG. 2 is a sectional view showing an example of the headrest molding die of the present invention, and FIG. 3 is an enlarged sectional view of a main part thereof.

As shown in FIG. 1, a headrest 10 obtained by the headrest molding die of the present invention is made of a foamed resin material such as polyurethane, and a cushion such as a polyurethane foam slab is provided at a contact position with a human head. The body 11 is integrally formed. Reference numeral 12 is a core body, and 13 is a stay portion protruding from the core body.

2 and 3 show a headrest mold 20 of the present invention. The headrest molding die 20 is composed of a mold 21 including a movable lower mold 22 and a movable upper mold 23, and a lid mold 24, and has a cavity 25 that defines the shape of a molded product. Reference numeral 26 is a fixed lower die, 27 and 28 are hinge portions that open and close the movable lower die 22 and the movable upper die 23, and 29 is a hinge portion that opens and closes the lid die.

Stop plates 36, 36 are provided at the boundary between the movable lower mold 22 and the cushion body 35, which is disposed in advance on the mold surface 32, in a shape of an acute angle in the mold opening direction. The foamed resin material is fixed at the position and is prevented from flowing around to the back surface of the cushion body 35.

On the other hand, a locking protrusion 40 is formed on the mold surface 33 of the movable upper mold 23. As will be better understood from FIG. 3, the locking projection 40 is provided to prevent the molded product from being attached to the stop plates 36 and 36 and moving when the movable lower mold 22 is opened. It is to be fixed to the upper mold side and is provided so as to project into the molded product at the mold surface 33. In this embodiment, the locking projections 40 are formed to have a length of 20 mm, a thickness of 3 mm, and a height of 5 mm, and are provided at four positions on the mold surface 33 in the movable upper mold 23. The size and shape of the locking projection 40 or the number of the locking projections 40 can be appropriately formed depending on the material and shape of the molded product.

Next, an example of manufacturing an automobile headrest using the molding die of the present invention will be described. First, on the mold surface 32 of the movable lower mold 22 of the molding mold 20, the cushion body 35 is arranged in advance at a predetermined position defined by the stopper plates 36. As the cushion body 35, a soft foam body having an open cell structure such as a well-known polyurethane foam slab is preferably used.

Next, the movable lower mold 22 and the movable upper mold 23 are clamped in this order, the core and the core body 41 are inserted into the cavities 25 as needed, and then a foaming resin is injected from an injection machine (not shown). The material P is injected and foam-molded integrally with the cushion body 35.

After the completion of foaming and curing, the movable lower mold 22, the lid mold 24, and the movable upper mold 23 are opened in this order, and the molded product is taken out. At this time, since a locking projection 40 is formed on the mold surface 33 of the movable upper mold 23 so as to project and lock into the molded product, the molded product is securely attached to the movable upper mold 23. Therefore, when the movable lower mold 22 is opened, the molded product is not attached to the movable lower mold 22 and does not move, and there is no inconvenience such as tearing or damage of the molded product.

[0016]

[Effect of the device]

 As shown and described above, according to the molding die of the present invention, when foam molding is performed integrally with the cushion body, the molded product moves while being attached to the stopper plate for fixing the cushion body when the mold is opened. Never. Therefore, it is possible not only to smoothly remove the mold, but also to prevent the molded product from being damaged and significantly reduce the defective product ratio.

[Brief description of drawings]

FIG. 1 is a perspective view of a headrest manufactured by a headrest mold of the present invention.

FIG. 2 is a sectional view showing an example of a headrest molding die of the present invention.

FIG. 3 is an enlarged sectional view of a main part thereof.

[Explanation of reference numerals] 10 headrest 11 cushion body 20 headrest molding die 21 type 22 movable lower die 23 movable upper die 24 lid type 26 fixed lower die 27 hinge part 28 hinge part 29 hinge part 32 mold surface 33 mold surface 35 cushion body 36 Stop plate 40 protrusion

[Procedure amendment]

[Submission date] October 16, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief explanation of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a perspective view of a headrest manufactured by a headrest mold of the present invention.

FIG. 2 is a sectional view showing an example of a headrest molding die of the present invention.

FIG. 3 is an enlarged sectional view of a main part thereof.

FIG. 4 is a sectional view showing an example of a general headrest molding die.

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Claims (1)

[Scope of utility model registration request] 1. A headrest including a movable lower mold and a movable upper mold, wherein a cushion body is previously set on a mold surface of the movable lower mold, and a foaming resin material is injected into the mold so as to be integrated with the cushion body. In the mold adapted to be molded, the movable upper mold is protruded into the molded product so that the molded product is attached to the lower mold and does not move when the movable lower mold is opened after molding. A headrest molding die, characterized in that a locking protrusion is formed for locking.