JPH0433070Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a mold for molding bar-shaped cosmetics such as lipsticks and lip balms, and in particular to bar-shaped cosmetics that prevent cooling water from entering the mold. Regarding molding molds.

(Prior Art) FIGS. 9 and 10 show an example of a lipstick mold as a mold according to the prior art.

In the figure, 1 and 2 are a pair of lower dies that are separably abutted against each other, and the lower dies 1 and 2 are made of, for example, gun metal,
It is formed into a substantially rectangular block shape from a material such as aluminum, and has, for example, 12 mold parts 3, 3, . It is formed to form a cannonball shape when it is in a mated state. Positioning pins 4, 4 are bored in one of the lower molds 1, 2 from the abutting surface, and each positioning pin 4 is provided in the other lower mold 2. The lower molds 1 and 2 are positioned by engaging with the pin holes 5 and 5. Further, the other lower mold 2 is provided with stepped portions 2A, 2A on both sides for finger insertion, and the operator can
By inserting a finger into A, the pair of lower molds 1 and 2 can be separated. In the figure, reference numerals 6 and 6 indicate pin holes provided on the upper surface of each lower mold 1 and 2 for positioning an upper mold 8, which will be described later.

Reference numerals 7 and 7 denote presser fittings for holding the pair of lower molds 1 and 2 in abutting state, and each of the presser metal fittings 7 is formed of a spring material or the like into a substantially U-shape, and holds the pair of lower molds 1 and 2. It is designed to be removably attached to both sides of the

Further, reference numeral 8 denotes an upper mold superimposed on the upper surface of each of the lower molds 1 and 2, and in the center of the upper surface of the upper mold 8, a scraping groove 8A having curved both ends is recessed in the longitudinal direction. On the bottom side of the scraping groove 8A, hollow cylindrical mold parts 8B, 8B, . The pin holes 6 are provided on the lower surface of the upper die 8.
Locating pins 9, 9 that engage with the upper molds 8 are protruded to position the upper mold 8 with respect to the lower molds 1, 2.

In the lipstick molding mold configured in this way, when molding lipstick, first, a pair of lower molds 1 and 2 are brought into contact with each other via each positioning pin 4 and each pin hole 5, and each lower mold is Holder fittings 7, 7 on both sides of 1, 2
is attached, and the upper mold 8 is placed on top of this.

Then, lipstick cosmetics heated and liquefied from above the upper mold 8 are injected into each mold part 3 through the hollow cylindrical mold part 8B, and this cosmetic is removed from the scraping groove 8A.
Fill until it reaches the inside. After that, each lower mold 1, 2
is cooled with cooling water to solidify the liquid cosmetic. When the cosmetic is solidified, the solidified cosmetic is scraped off in the scraping groove 8A of the upper mold 8,
Lift the upper mold 8 upward and remove it from above the lower molds 1 and 2. At this time, the ends of the cosmetic solidified within each hollow cylindrical mold part 8B of the upper mold 8 come to protrude upward from each mold part 3 of the lower molds 1 and 2.

Next, although not shown, the inner plates of the lipstick case are press-fitted to the ends of the cosmetic material that protrude upward from each mold part 3, and the presser metal fittings 7 are removed from both sides of the lower molds 1 and 2. Then, each step 2 of the lower mold 2
Insert your finger into A and press the lower mold 1 to separate the lower molds 1 and 2 by about 1 to 2 mm, and release the solidified cosmetic from each mold part 3 of the lower molds 1 and 2. The mold is released, and the cosmetic is extracted from each mold part 3 for each inner tray of the lipstick case.

(Problems to be solved by the invention) By the way, in the above-mentioned conventional technology, when molding lipstick, heated liquid cosmetics are filled from above the upper mold 8, and the lower molds 1 and 2 are filled with cooling water. When cooling, the inside of the cosmetic molding section becomes negative pressure due to contraction of the filled cosmetic, so cooling water is sucked into the cosmetic molding section and adheres to the surface of the bar-shaped cosmetic in the form of water droplets. If the water droplets are not evaporated before the framing process, in which the surface of the bar-shaped cosmetic is heated with flame from a gas burner, alcohol lamp, etc., the areas to which the water droplets are attached will become spots during framing, resulting in a poor appearance. Ta. For this reason, the filling process and the framing process cannot be performed continuously, resulting in poor production efficiency and difficulty in automation.

The present invention was developed in view of the above-mentioned shortcomings of the prior art.The problem that the present invention attempts to solve is that cooling water is not sucked into the cosmetic molding section and water droplets adhere to the surface of the cosmetic bar. The purpose is to provide a mold that prevents this.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a pair of lower molds having a plurality of mold parts on each abutting surface side, and a pair of lower molds that can be attached and detached from the upper surface of each of the lower molds. and an upper mold in which hollow cylindrical mold parts are bored at positions corresponding to the respective mold parts. A groove is provided between the part and the outer peripheral surface of the lower mold, and a cooling water drainage hole is provided in which at least a part of the groove communicates with the bottom of the lower mold, thereby preventing cooling water from entering the mold part during cooling. The reason is that

(Function) With the above configuration, the cooling water sucked into the mold when the cosmetic material contracts due to cooling is taken into the groove,
Since the taken-in cooling water is drained to the outside through the drainage hole, it is possible to prevent water droplets from adhering to the cosmetic.

That is, when the mold is cooled with cooling water, the outside of the cosmetic material filled in the mold part contracts, so that the inner wall surface of the mold part becomes under negative pressure. Therefore, the cooling water tries to be sucked into the mold part through the gap between the abutting surfaces of the lower mold, but since the groove is formed to surround the mold part, the sucked cooling water is Cooling water is prevented from entering the groove and entering the mold section.

Further, the reason why the groove is provided to surround the lower mold and the mold section is to prevent cooling water from entering the mold section even if water is sprayed from any direction of the mold.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4, taking a lipstick mold as an example.
In the embodiment, the same components as those of the prior art shown in FIGS. 5 and 6 described above are given the same reference numerals, and the explanation thereof will be omitted.

1 to 3 show a first embodiment of the present invention.

In the figure, 11 and 12 are a pair of molds that are separably abutted against each other, and the lower molds 11 and 12 are formed of a material such as aluminum or gun metal into a substantially rectangular parallelepiped block shape, and the abutting surfaces 11A, For example, 12 mold parts 13, 13, . . . are arranged in a row in the longitudinal direction on the 12A side. Each of the mold portions 13 is formed so as to form a cannonball shape in the abutting state. Among the lower molds 11 and 12, one of the lower molds 11 has positioning pins 4, 4 protruding from the abutment surface 11A on both sides, and the positioning pins 4 are connected to the other lower mold 11. The lower molds 11, 12 are positioned by engaging pin holes 5, 5 provided in the lower molds 11, 12. And each lower mold 11, 12
A groove 10 is provided on the outside of both ends of the mold part 13 of the abutment surfaces 11A, 12A so as to penetrate above and below each lower mold 11, 12, and a groove 10 is provided at the lower end of the mold part 13 and each lower mold 11, 12.
The groove 10A communicates with the groove 10 between the bottom surface of the
is provided.

Next, the operation of this embodiment configured as described above will be explained.

When molding a lipstick, as in the prior art, heated liquid cosmetics are filled from above into the upper mold 8, and the lower molds 11 and 12 are cooled with cooling water. Then, due to the contraction of the cosmetic, the inside of the mold part 13 becomes negative pressure, and the cooling water is sucked into the mold part 13, but the grooves 10, 1
Since 0A and 10 are located around the mold part 13, the sucked cooling water is guided to the grooves 10, 10A and 10, and the sucked cooling water is discharged from the bottom of the grooves 10 and 10. Once the cosmetic has solidified, the cosmetic is extracted from each mold section 13 in the same manner as in the prior art.

Therefore, water droplets will not adhere to the surface of the molded cosmetic bar, and no quality problems will occur even if the framing process is performed immediately.

4 to 8 show a second embodiment of the present invention, and the feature of this embodiment is a lipstick mold designed to automatically carry out the process of the first embodiment.

That is, in the figure, 21 and 22 are a pair of lower dies that are separably abutted against each other, and each of the lower dies 21 and 2
2 is formed from a material such as aluminum or gun metal into a substantially rectangular parallelepiped block shape, and on the abutting surfaces 21A, 22A, for example, 12 mold parts 23, 23, . . . are arranged in a row in the longitudinal direction. Each mold portion 23 is formed to have a cannonball shape on its abutting surface. Then, pin holes 25 and 2 are provided on both sides of each of the lower molds 21 and 22.
6 are provided, and positioning pins 24, 24 are passed through the molds 21, 24 to position the respective lower molds 21, 22. The positioning pin 24 has grooves 34, 34 on both sides, and rubber-like stoppers 27, 27, such as O-rings, are embedded in the grooves to prevent the lower molds 21, 22 from opening and closing easily. Further, 28 and 29 are upper molds provided on the upper surface of each of the lower molds 21 and 22 in connection with hinges 26 and 26, and are rotatably attached in the A-A' direction. When they collide, the hollow cylindrical crown fitting mold 35 and each mold part 23 communicate with each other. Upper mold 2
Pin holes 30, 3 provided on each side of 8, 29
0, a pin of a rotation shaft (not shown) is inserted, and the upper molds 28, 29 rotate in directions A and A'. Also, tapered holes 3 provided on both sides of the lower molds 21 and 22
2 and 32, sliding wedges (not shown) contact 32A and 32B to separate the lower molds 21 and 22 by about 1 to 2 mm.

And abutment surfaces 21A, 2 of the respective lower molds 21, 22
Each lower mold 21, 22 is placed on the outside of both ends of the mold part 23 of 2A.
A groove 30A is provided so as to be electrically connected to the groove 30 between the grooves 30, 30 which are provided so as to pass through the upper and lower sides of the mold part 23, the lower end of the mold part 23, and the bottom surface of each of the lower molds 21, 22.

Therefore, according to this embodiment, the same effects as those of the first embodiment can be obtained, and in addition, an automatic quantitative filling device, an automatic rotation device for the upper molds 28 and 29, an inner tray of a lipstick case, and an automatic Press fit extraction device, lower mold 2
By combining with automatic dividing devices 1 and 22, production efficiency can be further increased.

Furthermore, in each of the above embodiments, explanations have been given using a mold for molding a lipstick as an example, but the present invention is not limited to this, and can be applied to a mold for molding a bar-shaped cosmetic other than a lipstick, or a mold for molding something other than a cosmetic. Of course, it can also be applied.

In addition, in this embodiment, the groove provided between the inner upper mold bottom surface and the mold part was described as being recessed horizontally with the lower mold bottom surface, but it was described that the groove was recessed horizontally with the lower mold bottom surface. It may also be provided.

Thereby, the cooling water sucked into the groove can be automatically discharged to the outside.

(Effects of the invention) As detailed above, according to the invention, by providing water drainage grooves between the mold part and the side surface of the overlapping surface of each lower mold and between the bottom surface, cosmetic The cooling water that is sucked into the molding part when it contracts is flowed out from the groove to the bottom surface, preventing water droplets from adhering to the cosmetics, making it possible to continue the framing process after molding. , production efficiency can be increased. Furthermore, by introducing peripheral equipment related to molding, it becomes possible to automate the molding and framing processes, further improving production efficiency.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a front view of the mold showing the upper mold in cross section and the lower mold in partial cross section, and FIG. 3 is a partial perspective view showing the lower molds shown in FIG. 1 in a separated state; FIGS. 4 to 8 show a second embodiment of the present invention; Figure 4 is
1, FIG. 5 is a sectional view in the direction of the arrow in FIG. 4, FIG. 6 is a side view of FIG. 4, FIG. 7 is a sectional view in the direction of the arrow in FIG. 8 is a sectional view in the direction of the arrow in FIG. 4, FIGS. 9 and 10 show the prior art, FIG. 9 is a front view of the mold showing only the upper mold in cross section, and FIG. 10 is the upper mold. FIG. 10 is a partial perspective view showing the lower dies in FIG. 9 with their parts removed and shown in an abutting state; 8... Upper mold, 10, 10A... Groove, 11, 12
...Lower mold, 3,13...Mold section.

Claims (1)

[Scope of utility model registration request] A pair of lower molds having a plurality of mold parts on each abutting surface side, and a hollow cylindrical mold part that is removably superimposed on the upper surface of each of the lower molds and is bored at a position corresponding to each of the mold parts. In the mold, a groove is provided on one or both of the abutment surfaces of the lower mold, and a groove is provided between the mold part and the outer circumferential surface of the lower mold, and at least a part of the groove is provided below. A mold for molding rod-shaped cosmetics, characterized in that a cooling water drainage hole communicating with the bottom of the mold is provided to prevent cooling water from entering the mold part during cooling.