JPH06593U - Powder compression molding equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a powder compression molding apparatus for manufacturing a compressed powder container capable of preventing cracking of the compressed powder due to impact such as vibration and dropping with a simple configuration. According to the powder compression molding apparatus of the present invention, after the powder 2 is filled in the container 3, the powder 4 is filled so that the entire bottom 4 of the container 3 is curved in a convex shape toward the outside of the container 3. A powder compression molding apparatus 6 for compression molding, comprising a lower rod 7 having an upper surface curved in a concave shape and mounting the bottom of the container on the upper surface.
And an upper rod 8 for compressing the powder from above the container toward the bottom of the container after filling the container with the powder.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a powder compression molding apparatus for compressing and molding powder into a container that stores compressed powder such as cosmetics.

[0002]

[Prior art]

 Generally, it is known that a container for storing cosmetics and the like is filled with a solidified cosmetic in which powder is compressed and solidified. For example, in solid cosmetics such as powder foundations, blushers and eye shadows, a predetermined powder is compression molded in the space inside the container. An inner container of this type is usually composed of a bottom portion defining an inner space and a peripheral wall portion, and the bottom portion has a flat surface. In such solid cosmetics, after the compressed powder is molded into a container, the solidified cosmetic may be broken when the product is shaken or dropped during transportation from the factory to the market or while being carried by general consumers. It may end up. When the solid cosmetics are cracked in this way, the cosmetics cannot be evenly applied to puffs and the like, and the commercial value of the cosmetics is reduced.

In order to prevent such cracking of cosmetics, some techniques have been proposed in the past for alleviating the impact of vibration or drop applied to a compressed powder container. For example, Japanese Utility Model Laid-Open No. 61-160809 proposes a structure in which a plurality of ribs are provided on the side surface of a middle plate (compressed powder container) to elastically support an inner container filled with solid cosmetics. There is.

Further, a large number of outer containers provided with a cushioning material have been proposed, and examples thereof include Japanese Utility Model Laid-Open No. 58-154713 and Japanese Utility Model Laid-Open No. 61-35609.

[0005]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, although it is possible to prevent the solid cosmetics from cracking when the inner container is housed in the outer container, only the inner container is sold as a cartridge for refilling. In the case of carrying or carrying, it is impossible to prevent the solidified cosmetic from cracking only in the inner container.

Further, in the structure in which a plurality of elastic protrusions are formed on the compressed powder container, there is a problem that the processing process of the container, that is, the manufacturing apparatus becomes complicated. Further, various configurations have been proposed in which a cushioning material is arranged in a compressed powder container, but such a configuration also has a problem that the configuration for manufacturing the container becomes complicated because additional elements are required. In the present specification, the term "compressed powder container" refers to a state in which the container is filled with compression-molded powder.

Therefore, an object of the present invention is to provide a powder compression molding apparatus for manufacturing a compressed powder container capable of preventing cracking of the compressed powder due to shock such as vibration and dropping with a simple structure. It is in.

[0008]

[Means for Solving the Problems]

 The present invention is a powder compression molding apparatus that compresses and molds powder so that the whole bottom of the container is curved in a convex shape toward the outside of the container after the powder is filled in the container. A lower rod that is formed into a curved shape and that places the bottom of the container on the upper surface; and an upper rod that fills the container with powder and then compresses the powder from above the container toward the bottom of the container. The above object is achieved by providing a powder compression molding apparatus characterized by comprising:

[0009]

[Action]

 According to the powder compression molding apparatus of the present invention, at the time of powder compression molding, the container is placed on the lower rod, the powder is filled in the container, and then the upper rod is used to move the inside of the container from above the container. The powder is pressed to compress and mold it, but at the same time as the powder is compressed and molded, the bottom of the container is pressed together with the powder to be compressed, forming a concave curve along the shape of the lower rod. Be done.

The compressed powder container manufactured by such a compression molding apparatus is configured such that the bottom of the container is curved in a convex shape toward the outside of the container, and the convex curvature of the bottom causes the solid powder to pass through the container. It is possible to mitigate the shock such as vibration and drop applied to the crushed compressed powder. The compressed powder container manufactured by the powder compression molding apparatus according to the present invention absorbs the impact directly applied to the solidified compressed powder through the container. The impact can be directly mitigated even for the single product of.

In order to reduce such impact, a deforming force acts on the peripheral wall portion of the container toward the inside due to the curved deformation of the bottom portion of the container, and the deforming force acting on the peripheral wall portion causes the solid cosmetics to move in the peripheral wall portion. It is thought to be held on the side.

[0012]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a cross-sectional view showing a manufacturing process of a powder compression molding apparatus according to an embodiment of the present invention, and FIG. 2 is a view showing a configuration of a powder compression molding apparatus according to another embodiment of the present invention. . It should be noted that FIGS. 1 and 2 show the characteristic portions larger than the actual ones in order to explain the present invention in an easy-to-understand manner.

First, a compressed powder container manufactured by the powder compression molding apparatus of this embodiment will be described. As shown in FIG. 1 (d), the cartridge foundation as the compressed powder container 1 manufactured by the powder compression molding apparatus of this embodiment is a solid obtained by compressing the powder foundation as the powder 2. The cartridge is a filled cartridge, which is distributed and sold separately as a so-called refill cartridge. The container 3 of the compressed powder container 1 is formed in a substantially cylindrical shape, has a circular bottom portion 4 and a peripheral wall portion 5, and the container 3 is integrally molded from a metal plate. The bottom portion 4 is formed in a convex shape so that the entire bottom portion 4 protrudes toward the outside, which is the side opposite to the space where the powder 2 is filled.

The container 3 is preferably made of a metallic material, in this example an aluminum material. In such a compressed powder container 1, as shown in FIG. 1D, the deforming force F acts on the peripheral wall portion 5 toward the inside of the container due to the concave curvature of the bottom portion 4, and the peripheral wall portion 5 is It is considered that the compressed and solidified cosmetics are retained and the compressed and solidified cosmetics are prevented from cracking due to shock such as vibration.

Next, a powder compression molding apparatus 6 according to an embodiment of the present invention will be described. As shown in (c) of FIG. 1, the powder compression molding device 6 is composed of a lower rod 7, an upper rod 8 and a mold 9. The lower rod 7 has a concave upper surface. It is curved.

The concave curvature of the upper surface of the lower rod 7 is formed according to the shape of the container bottom obtained after molding, but the ratio of the concave amount L at the maximum concave position to the diameter D of the upper surface of the lower rod 7 (L / D) is preferably 0.3 to 2.0%, particularly preferably 0.6 to 1. 3%. If it is less than 0.3%, a sufficient deforming force cannot be obtained, and if it is more than 2.0%, the molded product is likely to be distorted. Specifically, the diameter D of the lower rod 7 is preferably 10 mm to 100 mm, particularly preferably 25 mm to 75 mm, and the maximum recess amount L at the maximum recess position of the recess is preferably 0.15 mm to 1.0 mm. , Particularly preferably 0.35 mm to 0.7 mm, and the container height H is preferably 2 mm to 10 mm, particularly preferably 3 mm to 7 mm.

The upper rod 8 is configured to compress the powder filled in the container downward. The lower surface of the upper rod 8 is formed so as to be curved downward in a convex shape, and has a shape that substantially matches the curve of the lower rod 7 described above, but as shown in FIG. May be The maximum convex amount M at the maximum convex position of the convex portion of the upper rod 8 is preferably 0. It is 15 mm to 1.0 mm.

Next, a method of manufacturing the cartridge for refilling the foundation by the powder compression molding apparatus of this embodiment will be described. As shown in FIG. 1 (a), a container prototype 3a, which is a conventional aluminum container having an outer shape of 54 mm, an inner diameter of 52.6 mm, and a height of 4.7 mm and a flat bottom, is used. As shown in (b) of the same figure, the container prototype 3a is placed on the lower rod 7 of the powder compression molding device 6, and then the fan daish as the powder 2 is placed on the container prototype 3a. It is filled so that the powder 2 overflows from the prototype container 3a.

Next, as shown in FIG. 1 (c), the compressed powder that is solidified while pressing the powder 2 from above the mold 9 with the upper rod 8 and holding the container mold with the mold. To form. At the same time, the bottom portion 4 of the container 3 is formed along the shape of the lower rod 7 with its entire surface curved outwardly in a convex shape. In this example, such compression was performed at 40 kg / cm ² .

After the powder was compression-molded, the compression-molded powder 2 was taken out from the mold 9 together with the container 3, whereby an example product as shown in FIG. 1D was manufactured.

With respect to the example products manufactured as described above, various changes were made to the concave amount L of the lower rod 7 and the convex amount M of the lower surface of the upper rod, and the cartridge fan and the conventional example A product was prepared and a shock resistance test was conducted as follows. The results are shown in the table below. The lower rod that does not form a concave curve (L = 0), L = 0.1 mm, 0.3 mm, and 0.5 mm that have a concave curve are used as samples and set in a compact container. In this state, an impact of 250 times / minute and an amplitude of 40 mm was applied in the longitudinal direction, and the time until the compressed powder cosmetic material was broken was visually measured every minute.

[0022]

[Table 1]

As can be seen from the above table, any of the examples formed by using the lower rod 7 having a curved upper surface as compared with the comparative example (L = 0) in which the upper surface of the lower rod 7 is not curved. Also, in the case of Example 3, it took a long time for the cosmetics to crack with respect to the impact, and in particular, in Example 3 produced by a device having a curve of L = 0.5 mm and M = 0.5 mm, the time until cracking was 4 It was long and it was possible to obtain extremely good results. That is, according to the powder compression molding apparatus of the present invention, the impact force acting on the compressed powder in the compressed powder container can be obtained with a simple configuration in which the upper surface of the lower rod 7 is curved and shaped in a concave shape. It can be sufficiently relaxed to prevent cracking of the solid compressed powder.

The present invention is not limited to the above-described embodiments, but can be variously modified without departing from the spirit of the present invention. For example, the compressed powder is not limited to cosmetics such as powder foundation, but the same effect can be obtained with other powders. Further, the shape of the bottom of the container is not limited to a circle, and may be a polygon such as a quadrangle. In this case, the diameter of the container shall be the diagonal length.

[0025]

According to the powder compression molding apparatus of the present invention, it is possible to manufacture a compressed powder container having a simple structure and capable of preventing the compressed powder from being cracked due to an impact such as vibration and dropping.

[Brief description of drawings]

1 is a cross-sectional view showing a manufacturing process of a powder compression molding apparatus according to an embodiment of the present invention.

FIG. 2 is a view showing the structure of a powder compression molding apparatus according to another embodiment of the present invention.

[Explanation of symbols]

 1 Compressed powder container 2 Powder 3 container 6 Powder compression molding device 7 Lower rod L Lower rod recess amount

Claims (2)

[Scope of utility model registration request] 1. A powder compression molding apparatus for compressing and molding the powder so that after the powder is filled in the container, the whole bottom of the container is curved in a convex shape toward the outside of the container. A lower rod formed to be concavely curved and mounting the bottom of the container on the upper surface, and after filling the container with powder,
An upper rod for compressing the powder from above the container toward the bottom of the container. 2. The upper surface of the lower rod has a recess amount at the maximum recess position of 0.3 to 2.0 of the maximum diameter of the lower rod.
%, The powder compression molding apparatus according to claim 1.