JP5010818B2 - Mold - Google Patents

Description

The present invention relates to a molding die for molding a molded product made of a foamed resin, such as a backrest portion of a seat in a vehicle.

Conventionally, as a molding apparatus that constitutes this type of mold , for example, one having a configuration as shown in Patent Document 1 or FIGS. 5 to 7 is known. In this conventional apparatus, an upper die 22 is connected to an upper portion of a lower die 21 at one end portion thereof via a pair of hinges 23 so as to be opened and closed. A core mold 24 is connected to the lower mold 21 through a pair of hinges 25 at one end on the same side as the upper mold 22 so as to be positioned between the lower mold 21 and the upper mold 22. . Then, in a state where the upper mold 22 and the core mold 24 are closed with respect to the lower mold 21, the molded product M is foam-molded in the cavity formed between the molding surfaces 21a, 22a, and 24a. It has become.
JP-A-11-170278

  However, in this conventional molding apparatus, as apparent from FIGS. 5 and 6, the shaft 23 a of the hinge 23 of the upper mold 22 and the shaft 25 a of the hinge 25 of the core mold 24 are connected to the upper corner portion of the lower mold 21. Are arranged on the same axis.

  Therefore, as apparent from FIG. 7, when the upper mold 22 and the core mold 24 are opened with respect to the lower mold 21, a space S formed between the upper mold 22 and the core mold 24 is formed. Narrow. Therefore, the operator W is positioned on the open end side of the lower mold 21 with the upper mold 22 and the core mold 24 open, and the molded product M is removed from the core mold 24 or the upper mold 22 and the middle mold 24 are removed. When cleaning the molding surfaces 22a and 24a of the core 24, applying a release agent to the molding surfaces 22a and 24a, or setting a secondary material Ma such as felt on the molding surface 24a of the core 24 There was a problem that their workability was poor. The secondary material Ma such as felt covers the surface of the foam material so that the foam material does not come into contact with the metal frame of the seat and is not damaged when the molded product M is a seat back portion, for example. Is.

  In order to deal with the above-described problem of workability, for example, the opening angle of the upper mold 22 with respect to the lower mold 21 is increased to secure a wide space S between the upper mold 22 and the core mold 24. Is also possible. However, in the case of such a configuration, the molding surface 22a of the upper mold 22 in the mold open state is arranged at a large distance from the operator W. Therefore, the cleaning operation and the release agent for the molding surface 22a are performed. Another problem has arisen in that the coating operation becomes difficult.

  Therefore, the opening angle of the upper mold 22 cannot be increased. Under such conditions, the space S between the upper mold 22 and the core mold 24 is improved in order to improve the workability of setting the auxiliary material Ma. In order to widen the width, it is necessary to reduce the opening angle of the core mold 24 to bring it close to a horizontal state. However, if it does in this way, while the open part between the core type | mold 24 and the lower mold | type 21 will become narrow, the molding surface 24a of the core type | mold 24 will face downward, and the lower mold | type 21 and the core type | mold 24 of It becomes difficult to clean the molding surfaces 21a and 24a and to apply a release agent to the molding surfaces 21a and 24a. In addition, since the molding surface 24a of the core mold 24 faces downward, it becomes difficult to set the auxiliary material Ma such as felt on the molding surface 24a side of the core mold 24.

As described above, in the conventional molding apparatus, it is extremely difficult to improve workability in various operations associated with molding.
The present invention has been made paying attention to such problems existing in the prior art. The purpose is that the upper mold and the core mold are open with respect to the lower mold, and operations such as cleaning of the molding surface of each mold and setting of auxiliary materials for the core mold can be easily performed with a very simple configuration. An object of the present invention is to provide a mold having such a configuration.

In order to achieve the above object, the present invention provides a molding die for foam-molding a vehicle seat backrest on which a subsidiary material is integrally bonded and fixed to the back surface, and the molding die forms the vehicle seat backrest. An upper mold and a lower mold each having a molding surface to be formed, and a core mold having a molding surface that is positioned between the upper mold and the lower mold to form the back surface , At one end of the upper mold, the core mold is connected to the lower mold via a first shaft so as to be opened and closed, and the secondary material is set on the molding surface. at part, openably connected through a second axis relative to said lower die, the position in the lower mold of the second axis, the position in the lower mold of the first axis, the disposed between the first shaft end portion of the molding surface of the lower mold to form the cavity when mold closing of the mold by It is characterized in Rukoto.

  Therefore, when the upper mold and the core mold are opened with respect to the lower mold, the position of the core axis is away from the position of the upper mold shaft. A large space is formed. Therefore, in the mold open state of the upper mold and the core mold, the operator is positioned on the open end side of the lower mold, removes the molded product from the core mold, cleans the molding surface of each mold, and each molding When performing application of a release agent to the surface, setting of auxiliary materials on the molding surface of the core mold, and the like, these operations can be performed easily and efficiently. Further, since a wide space can be secured between the upper mold and the core mold, it is not necessary to reduce the opening angle of the core mold. For this reason, the process of cleaning the core surface and the molding surface of the upper mold can be facilitated. In addition, as a configuration for obtaining the above operation, the configuration is very simple because only the position of the core shaft is changed.

  In addition, the space between the molding surface of the lower mold and the upper corner portion is effectively used by arranging the shaft of the core mold between the position of the shaft of the upper mold and the molding surface of the lower mold. Thus, the core mold can be assembled, and the overall size of the molding apparatus can be avoided.

  As described above, according to the present invention, various operations such as cleaning of the molding surface of each mold and setting of auxiliary materials with respect to the core mold can be easily performed with the upper mold and the core mold open relative to the lower mold. The effect that it can be performed is demonstrated.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, in this molding apparatus, an upper die 12 is connected to an upper corner portion of the lower die 11 at one end portion thereof through a pair of hinges 13 so as to be capable of opening and closing in the vertical direction. ing. A core mold 14 is connected to the lower mold 11 via a pair of hinges 15 at one end on the same side as the upper mold 12 so as to be positioned between the lower mold 11 and the upper mold 12. . Then, as shown in FIG. 3, in a state where the upper mold 12 and the core mold 14 are closed with respect to the lower mold 11, the vehicle is formed in the cavity formed between the molding surfaces 11 a, 12 a and 14 a. A molded product M such as a seat back portion is foamed. In this case, a secondary material Ma such as felt set in advance on the molding surface 14a of the core mold 14 is integrally bonded and fixed to the back surface of the molded product M.

  In addition, this shaping | molding apparatus is moved on the line which is not shown in figure, During the movement, the upper mold | type 12 and the core type | mold 14 are rotated by the action of the cam provided along the line. .

  As shown in FIGS. 1-3, in this embodiment, the position of the shaft 15a of the hinge 15 on the core mold 14 side is located between the upper corner of the lower mold 11 and the molding surface 11a, It is arranged on the inner side (left side in FIG. 1) of the shaft 13a of the hinge 13 on the upper mold 12 side, that is, on the molding surface 11a side. As a result, as shown in FIG. 4, when the upper mold 12 and the core mold 14 are opened with respect to the lower mold 11, the core mold 14 is closer to the open end side of the lower mold 11 than the upper mold 12 ( 1, and a large space S is formed between the upper mold 12 and the core mold 14.

  Accordingly, when the operator W stands on the open end side of the lower mold 11 and performs various operations while the upper mold 12 and the core mold 14 are open, these operations are easily and efficiently performed. be able to. That is, the molded product M is removed from the core mold 14, the molding surfaces 12a and 14a of the upper mold 12 and the core mold 14 are cleaned, a mold release agent is applied to the molding surfaces 12a and 14a, the core Various operations such as setting the auxiliary material Ma on the molding surface 14a of the mold 14 can be easily performed near the operator W and using the wide space S.

  Further, in order to secure a wide space S, it is not necessary to set the core mold 14 at an opening angle close to a horizontal plane. Therefore, the opening part between the core mold 14 and the lower mold 11 can be widened, and the operations of cleaning the mold surfaces 14a and 11a of the core mold 14 and the lower mold 11 and applying the release agent are easy. Can be done. Moreover, the molding surface 14a of the core mold 14 faces upward, and the molding surface of the core mold 14 is coupled with the fact that the core mold 14 approaches the operator side due to the arrangement of the core mold 14 inside the shaft 15a. It is very easy to attach and detach the auxiliary material Ma such as felt to the 14a side.

  In addition, as a configuration for achieving the various advantages described above, the position of the shaft 15a of the core mold 14 is merely set to the inside, so the number of parts does not increase, the configuration is simple, and the assembly is also easy. Easy. Further, since the shaft 15a of the core mold 14 is disposed by effectively using the space between the upper corner portion of the lower mold 11 and the molding surface 11a, it is possible to avoid an increase in the size of the entire molding apparatus. .

(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
-The shape and size of the molding surfaces 11a, 12a, and 14a of the molds 11, 12, and 14 are changed to form a molded product M different from the backrest portion of the vehicle seat.

The side view which shows schematic structure of the shaping | molding apparatus of one Embodiment. The top view of the shaping | molding apparatus of FIG. The principal part expanded sectional view which shows the detailed structure of the shaping | molding apparatus of FIG. FIG. 4 is a main part sectional view showing a mold opening state of the molding apparatus of FIG. 3. The side view which shows schematic structure of the conventional shaping | molding apparatus. The top view of the shaping | molding apparatus of FIG. The principal part expanded sectional view which shows the detailed structure of the shaping | molding apparatus of FIG. 5 in a mold open state.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Lower mold, 11a ... Molding surface, 12 ... Upper mold, 12a ... Molding surface, 13 ... Hinge, 13a ... Shaft, 14 ... Core mold, 14a ... Molding surface, 15 ... Hinge, 15a ... Shaft, M ... Molding Goods, S ... space.

Claims (1)

A molding die that foam-molds a vehicle seat backrest on which the auxiliary material is integrally bonded and fixed to the back surface,
The mold includes an upper mold and a lower mold each having a molding surface that forms the vehicle seat back, and a molding surface that is positioned between the upper mold and the lower mold and forms the back surface. It consists of a child type and
The upper mold is connected at one end of the upper mold to the lower mold via a first shaft so as to be openable and closable.
The core mold in which the auxiliary material is set on the molding surface is connected to the lower mold through a second shaft at one end of the core mold so as to be openable and closable.
The position in the lower mold of the second shaft, the position in the lower mold of the first shaft, the first shaft side of the molding surface of the lower mold to form the cavity during mold closure of the mold A mold characterized by being arranged between the end portions .

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