JP2854818B2 - Mold for molding bar-shaped cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die used for molding stick-shaped cosmetics such as lipstick and lip balm.

[0002]

2. Description of the Related Art In general, in producing stick-shaped cosmetics such as lipsticks and lip balms, undiluted cosmetics (bulk)
Is filled in a mold part of a molding die, and the resultant is cooled together with the mold and solidified to form a rod-shaped cosmetic, and the molded rod-shaped cosmetic is taken out and loaded into an inner plate of a dispensing container. The system has been adopted. Conventionally, as a molding die, for example, those shown in FIGS. 3 and 4 are used. In other words, this mold has a pair of lower dies (11), (11) formed in a substantially rectangular parallelepiped block shape and abutted so as to be separable from each other, and each of these lower dies (1).
An upper mold (12) superimposed on the upper surface of 1) (FIG. 4 shows only the lower mold), and a holding bracket (13).
Thus, the abutment state of each lower mold (11) is fixed, and the upper mold (12) is overlapped.
A plurality of molding die portions (14) having a substantially shell shape are provided on the abutment surface of each lower die (11). In this mold, the bulk is first filled into a mold part (14), and the bulk is cooled and solidified, and the solidified cosmetic is scraped off in a scraping groove (15). Then, the upper mold (12) is lifted upward and removed from the lower mold (11). Then, an inner plate of the container is inserted into the end of the cosmetic projecting from the upper end of the lower mold (11), the holding metal (13) is removed, and each lower mold (11) is separated by 1-2 mm. It releases the cosmetics.

[0003] However, in the molding die having the above-described configuration, when the solidified cosmetic material is released from the mold, an operation of removing the holding metal fitting (13) and separating each lower mold (11) is performed. This requires human labor, which has been a hindrance in automating the manufacturing process of the bar-shaped cosmetic. Therefore, the manufacturing process of the bar-shaped cosmetic material, that is, the process of filling the bulk into the mold part of the molding die, the process of cooling this to form the bar-shaped cosmetic material, and taking out the molded bar-shaped cosmetic material from the mold Loading into the middle plate of the dispensing container, framing process for polishing the surface of the cosmetic material, dispensing the polished stick-shaped cosmetic material into the dispensing container, and covering the dispensing container after the cosmetic dispensing operation. The present applicant has developed and has already filed an application for an automatic manufacturing apparatus for bar-shaped cosmetics, which efficiently combines the steps of the present invention with each other and automates the entire manufacturing process, thereby enabling a great rationalization.
01418).

[0004] This automatic manufacturing apparatus, as shown in FIG.
A first transport line (21) for transporting a molding die (20) for a stick-shaped cosmetic in a closed loop in the direction of arrow A in the figure;
A second transfer line (31) for transferring a container mounting table (30) on which a plurality of feeding containers are mounted in a closed loop in the direction of arrow B in the drawing. In the middle of the first transfer line (21), a filling device (22) for filling the mold (20) with bulk, and a cooling device (23) for cooling the mold (20) filled with bulk are provided. The core of the cooled and molded rod-shaped cosmetic is loaded with an inner plate of the dispensing container, and the rod-shaped cosmetic is molded together with the dispensing container in a mold (20).
And a container loading device (24) for extracting from the container. Then, the feeding container loaded with the stick-shaped cosmetic by the container loading device (24) is placed on the container placing table (30) on the second transport line (31), and in this state, the second container is placed. Cosmetic heating device (32) and framing device (3)
By passing through 3), the surface of the stick-shaped cosmetic is polished. Thus, after the polished stick-shaped cosmetic is lowered into the container by the dispensing device (34), the lid is hung by the lid hanging device (35). Before the filling device (22) in the first transfer line (21), a mold preheating device (25) for pre-warming the mold (20) before bulk filling is provided. I have.

[0005] In this automatic manufacturing apparatus, in order to automate all steps from the molding of the bar-shaped cosmetic to the loading of the container in the first transport line (21), a mold (20) as shown in Figs. ) Is used. This mold (2
0) is formed in a rectangular parallelepiped shape, and each abutment surface (201a)
A pair of lower dies (2
01) and (201), and a pair of upper dies (203) and (203) mounted on each of these lower dies (201) via a hinge (202) so as to be openable and closable. (203) Between the lower dies (201), a plurality of (16 in this example) rows of substantially shell-shaped molding dies (204) as shown in FIG. 8 are provided. And, as shown in FIG. 9, each lower die (201) of the die (20) has
A pair of pin holes A (205a) and (205a) formed in the width direction of each lower mold (201) are
It is provided in a state shifted in the longitudinal direction of 1), and is formed between these two pin holes A (205a) and (205a) through the lower molds (201) and (201) on both left and right sides. A pin hole B (205b) is provided.
(205a) and B (205b) have pins A (20
6), (206) and the pin B (207) are slidably fitted respectively. A pair of O-rings (208) and (208) are mounted on the outer periphery of the pin B (207).
By contacting (205b) with a predetermined interference, each lower mold (201) is held in the abutted state shown in the figure. In addition, each of the pins A (206) has an abutting surface (20) of the lower die (201) of the other party.
1a), when pressed in the direction of the arrow X in FIG. 9, a slight gap is formed between the lower dies (201). Further, as shown in FIGS. 6 and 7, each upper die (203) is provided with engagement holes (209) and (209) having bottoms at the longitudinal end surfaces thereof. By engaging an arm or the like with (209) and rotating in the direction of arrow Y in FIGS. 6 and 8, as shown in FIG. The upper mold (203) is opened left and right. As shown in FIGS. 7 and 8, each lower mold (201) has a drain passage (201) along the abutment surface (201 a).
b) is formed to prevent cooling water and the like from entering and remaining in each mold part (204).

The mold (20) constructed as described above is provided downstream of the cooling device (23) in the first transfer line (21) of the automatic manufacturing apparatus shown in FIG. As shown in FIG. 7, the upper mold (203) is opened right and left by the opened mold opening device (26), and further, a clearance opening device (2) provided on the downstream side of the mold opening device (26).
According to 7), a slight gap is formed between the lower dies (201).

The mold opening device (26) and the gap opening device (27) will be briefly described with reference to FIGS. 10 and 11, respectively. First, the mold opening device (26) moves the mold (20) to the transport line (21) as shown in FIG.
A stopper (260) for stopping at a predetermined upper position, an elevating plate (261) that moves up and down, and an elevating plate (26)
1) and a slider mechanism (26) for moving the drive unit (262) forward and backward in the front-rear direction of the transport line (21).
3) and are engaged with the engagement holes (209) of the upper dies (203) attached to the drive section (262), and rotate the upper dies (203) in the direction of the arrow Y to the right and left. And a pair of rotating arms (264) and (264) that open to the front. In the mold opening device (26), the mold (20) is carried in to the position of the stopper (260) with the elevating plate (261), the drive section (262) and the like being raised, and the mold is opened. (20) is raised by a lifting lifter (hidden under the mold in the figure and not visible),
After lowering the elevating plate (261), the drive unit (262), etc., the drive unit (26) is moved by the slider mechanism (263).
2) is advanced in the direction of arrow Z so that each of the rotating arms (26)
4) is engaged with the engagement hole (209) of each upper die (203). And these rotating arms (26
4) is rotated in the direction of the arrow Y, whereby the mold (2) is rotated.
Each upper mold (203) of (0) opens left and right from above each lower mold (201), and the base end side of the bar-shaped cosmetic (L) faces each lower mold (201).
It will be exposed above.

As shown in FIG. 11, the gap opening device (27) includes a stopper (270) for stopping the mold (20) at a predetermined position, and a lifting / lowering lifter (hidden in the figure) for moving the mold (20). The lower die (201) is held by the holding plate (271) in the left-right direction in a state where it is raised by the invisible) to position the mold (20). The positioning cylinders (272) are separated from each other in the front-rear direction of the positioning cylinders (272) and are inserted into the pin holes A (205a) of the lower molds (201). 206)
(See FIG. 9) in the direction of arrow X to form four push rods (273) that form a small gap (S) of about 0.1 to 0.2 mm between the lower dies (201). It is provided with. In the holding plate (271) of the positioning cylinder (272), there are three relatively weak springs (274) visible on the near side in the figure and relatively strong springs hidden behind and not visible on the back side in the figure. And each pin A (206) with a push rod (273) as described above.
Is pressed in the direction of arrow X, each lower mold (201) of the mold (20) is separated by a slight gap (S) against the weak spring (274). In this manner, the gap (S) is formed between the lower dies (201), whereby the stick-shaped cosmetic (L) is released from each of the lower dies (201) so as to be able to be removed from the lower dies (201). ) Can be easily loaded and unloaded into the feeding container.

The mold (20) having passed through the mold opening device (26) and the gap opening device (27) is used after the rod-shaped cosmetic (L) is extracted by the container loading device (24). The mold preheating device (25) is closed again by the mold closing device (28) in the automatic manufacturing device shown in FIG.
Transported to In addition, this mold closing device (28)
It is configured substantially the same as the mold opening device (26),
The operation is the reverse of the operation sequence described above.

[0010]

As described above, as described above, the above-mentioned automatic manufacturing apparatus completely automates the steps from molding of the bar-shaped cosmetic material to the loading of the container, thereby achieving a great rationalization. . However, it has been discovered that the mold (20) having the above-described configuration causes the following problem with continuous use in an automation line. That is, the above-mentioned mold (20) is a pair of lower molds (201) and (201) in an automated line.
The opening and closing of the pin B (207) and the pin hole B (20) are performed so that the positional relationship between the molding mold parts (204) does not shift when the state is changed from the open state to the closed state.
5b) is formed with a precise dimensional tolerance. Then, a pair of O-rings (20
8) and (208) are attached, and these O-rings (20
8) contacts the pin hole B (205b) with a predetermined interference so that the abutment state of each lower mold (201) is maintained, and the opening and closing operation of these lower molds (201) and (201) is performed. It is performed reliably while having a certain level of astringency. However, since the mold (20) is usually washed after being used for a predetermined period of time, the oil, the pigment, or the scale of the cosmetic is removed with the pin B.
(207) and the pin portion B (205b) penetrates into the sliding portion, and as a result, the sliding operation becomes slow and the lower die (2)
01) and (201) cannot be smoothly opened and closed. In addition, a pair of lower molds (20
1), the closed state of (201) is the O-ring (208).
Since the O-ring (208) is worn out because it is held only by the two lower molds (201),
(201) does not close tightly and these abutment surfaces (2
01a), a gap is generated, and a problem of defective filling or defective loading is caused at the time of bulk filling or loading of the dish in the container. That is, both lower molds (201),
If a gap is formed between the (201), the bar-shaped cosmetic is formed thick and the cosmetic is shaved when the inner dish is loaded, or vertical streaks appear on the surface of the molded bar-shaped cosmetic inadvertently. This led to poor quality that would cause loss of product value.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and allows a pair of lower dies which can be brought into contact with and separated from each other to be smoothly opened and closed, and these lower dies are closed. It is an object of the present invention to provide a stick-shaped cosmetic molding die capable of reliably maintaining an abutting state at the time of contact.

[0012]

Means for Solving the Problems In order to achieve the above-mentioned object, a stick-shaped cosmetic molding die of the present invention has the following constitution. That is, a mold used for molding a rod-shaped cosmetic, which is abutted so as to be able to come and go with each other, has a plurality of molding mold portions on each abutting surface, and has the abutting portions at both ends in the longitudinal direction. A pair of lower dies each having a joint opening / closing mechanism, wherein the opening / closing mechanism penetrates each of the lower dies in the width direction with a gap therebetween in the longitudinal direction in the both lower dies. The pin hole and the pair of pin holes are respectively slidably inserted into the pair of pin holes, and one end side is pressed from the outside so that the other end side presses the opposing abutment surface of the opposing lower mold to press the lower mold between the two lower dies. A pair of pins for forming a gap, a through-hole penetrating the lower mold between the pair of pin holes, a hard pipe slidably inserted into the through-hole, and the through-hole A coil that is inserted into the above-mentioned hard pipe so that it can extend and contract It is characterized in further comprising a spring.

[0013]

As described above, the mold for molding a stick-shaped cosmetic according to the present invention is provided with opening and closing mechanisms at both longitudinal ends of a pair of lower molds which are brought into contact with and separated from each other. By pressing one end side of the pin inserted in the pair of pin holes from the outside, the other end side of the pin presses the abutting surface of the opposing lower mold to form a gap between the two lower molds. It is something that has become. A through-hole is formed between the pair of pin holes, penetrating both lower dies, a hard pipe is inserted into the through-hole, and a coil spring is provided inside the hard pipe. It has been inserted. Therefore, the rigid pipe slides along the inner peripheral surface of the through hole when opening and closing the pair of lower dies, and performs a guiding action to make the opening and closing operation smooth, and at the time of abutment between the two lower dies, the horizontal direction is reduced. This prevents the positional relationship from being shifted. In addition, since the coil spring that is inserted into this hard pipe so that it can expand and contract has the effect of attracting the pair of lower molds to each other, it is possible to exactly return to the original abutting state when closing both lower molds Becomes Therefore, according to the mold of the present invention, there is no gap between the abutment surfaces of both lower molds, and it is possible to reliably solve problems such as a defective filling and a defective loading.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing a mold (1) for molding a stick-shaped cosmetic according to the present invention. FIG. 6II-II section of the conventional mold (20) described above with reference to FIGS. FIG. 9 which is a diagram
It corresponds to. That is, this mold (1)
Like the above-mentioned conventional mold (20), it can be applied to the automatic manufacturing apparatus shown in FIG. 5 and described above, and its appearance and usage are the same as those of the conventional mold (20). It is. Therefore, a detailed description of the same components as those of the conventional mold (20) will be omitted in the following description.

As shown in FIG. 1, the mold (1) is abutted so as to be able to approach and separate from each other, and each abutting surface (3a '), (3)
b ′) has a plurality of substantially shell-shaped mold parts (2) (three of them are shown in this figure), and the abutment surfaces (3a ′) are provided at both ends in the longitudinal direction. , (3
b ′) has an opening / closing mechanism (3c) for opening and closing (only one side is shown in the figure).
a) and (3b). The pair of lower dies (3a) and (3b) are provided with a pair of pin holes (4a) and (4b) penetrated in the respective width directions.
Are provided in the lower dies (3a) and (3b) in a state of being spaced apart in the longitudinal direction, and the pair of pin holes (4
a) and (4b) are provided with through-holes (5) drilled through both lower molds (3a) and (3b).

A pair of pins (6a) and (6b) are slidably fitted in the pair of pin holes (4a) and (4b), respectively. These pins (6a), (6b)
The abutment surfaces (3b ') of the lower molds (3b) and (3a) whose one end side is opposed from the outside by being pressed from the outside,
(3a ') is pressed. The lower dies (3a) and (3b) that have received the pressing force are slightly separated from each other to form a gap between the abutment surfaces (3a ′) and (3b ′).

The through-hole (5) has a two-stage structure in which both ends are large-diameter portions (5a) and the center side is a small-diameter portion (5b) slightly smaller in diameter than the large-diameter portion (5a). The lower die (3a), which is formed inside the small diameter portion (5b),
A stainless steel hard pipe (7) is slidably inserted through the small diameter portion (5b) between (3b).
That is, this hard pipe (7) is made of a pair of lower molds (3).
With the movement of opening and closing a) and (3b),
It slides along the inner peripheral surface in the small diameter portion (5b) of the through hole (5).

A coil spring (8) is inserted into the hard pipe (7). Support pins (9) for supporting both ends of the coil spring (8) are provided at both ends of the through hole (5). The large diameter portion (5a) and the small diameter portion (5
b). Therefore, the coil spring (8) expands and contracts in the hard pipe (7) with the movement of opening and closing the pair of lower dies (3a) and (3b). Further, a push-in lid (10) made of nylon and matching the large-diameter portion (5a) is detachably fitted to both ends of the through hole (5).

The mold (1) thus constructed is shown in FIG.
1, the clearance opening device (27) described above is acted on the opening / closing mechanism (3c) of the pair of lower dies (3a) and (3b), so that the lower dies (3a) and (3) as shown in FIG.
b) A gap (S) of about 0.1 to 0.2 mm is formed between them. That is, a pair of pins (6a), (6) are pushed by the push rod (273) of the gap opening device (27).
The other end of each pin (6a) and (6b) is pressed against the lower die (3b) of the mating member (3b) and the abutment surface (3b) of (3a) '), (3
a '). Then, along with this, the coil spring (8) expands, and the hard pipe (7) slidably inserted into the small-diameter portion (5b) of the through hole (5) forms the small-diameter portion (5b). Sliding along the inner peripheral surface, a gap (S) is formed between the two lower dies (3a) and (3b) against the force of the coil spring (8).

Thus, the pair of lower dies (3a), (3
When opening and closing b), the rigid pipe (7) slides along the inner peripheral surface of the small-diameter portion (5b) of the through hole (5), so that both lower dies (3a), ( The opening / closing operation of the opening / closing operation of 3b) is performed smoothly, and the opening / closing operation of the lower dies (3a) and (3b) can be prevented from being displaced at the time of abutment. It is. The coil spring (8) inserted into the hard pipe (7) is a pair of lower molds (3a),
When the pressing force in the direction of the arrow X by the push rod (273) of the gap opening device (27) is released, the lower die (3a),
(3b) is attracted to each other and returns to the original abutting state.

In the mold (1), a stainless steel hard pipe (7) is slidably inserted into the through hole (5), and a coil spring ( 8), and push-in lids (10) made of nylon are detachably fitted to both ends of the through hole (5). Therefore, by removing the push-in lid (10) from both ends of the through-hole (5), cleaning and maintenance of the inside of the through-hole (5) can be easily performed, and the lower dies (3a) and (3b) It is possible to keep the opening and closing operation favorable. Furthermore, both lower molds (3a), (3b)
Is not held by an O-ring or the like, but the lower mold (3a),
(3b) is tightly closed to maintain the closed state, so that the abutment surfaces (3) of both lower molds (3a) and (3b)
There is no gap between a ′) and (3b ′), and problems such as poor filling and improper loading can be solved.

In the above embodiment, an example is described in which a stainless steel pipe is used as the hard pipe slidably inserted into the through hole, but this is not particularly limited to the stainless steel pipe. Alternatively, a pipe of another material may be used as long as the pipe has a hardness and strength capable of preventing a lateral displacement when the lower dies are opened and closed.

In the rod-shaped cosmetic molding die, the upper die, which is placed on the lower die, can be opened and closed via a hinge like the one manufactured for application to the above-mentioned automatic manufacturing apparatus. By doing so, it is possible to sequentially set the mold opening device to the clearance opening device in the automatic manufacturing apparatus, and to provide a series of automation lines.

[0025]

As described above, the bar-shaped cosmetic molding die of the present invention has a pair of lower dies which are brought into contact with and separated from each other, and have an opening and closing mechanism. By pressing one end of the pin inserted into the pin hole from the outside, the other end of the pin presses the opposing abutment surface of the lower die to form a gap between the two lower dies. Is what it is. In addition, the hard pipe is slidably inserted into a through-hole formed through the lower mold between the pair of pin holes, and a coil is inserted inside the hard pipe. The spring is inserted. Therefore, the rigid pipe slides along the inner peripheral surface of the through-hole when the lower mold is opened and closed, thereby providing a guide action, smoothing the opening and closing operation of the lower mold, and reducing the displacement at the time of abutment between the two lower molds. The problem will be solved. In addition, since the coil spring inserted into the hard pipe has an effect of attracting the lower molds to each other, it is possible to exactly return to the original abutment state when closing both the lower molds. Therefore, according to this mold, there is no gap between the abutment surfaces of the two lower dies, and problems such as poor filling and poor loading can be reliably solved.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing one embodiment of a stick-shaped cosmetic molding die of the present invention.

FIG. 2 is a partial sectional view showing a state where a lower mold is opened in the mold shown in FIG. 1;

FIG. 3 is an explanatory view showing a conventional bar-shaped cosmetic molding die.

FIG. 4 is a perspective view showing a lower mold of the conventional mold shown in FIG.

FIG. 5 is an overall perspective view showing an example of an automatic stick-shaped cosmetic manufacturing apparatus.

FIG. 6 is a perspective view showing an example of a rod-shaped cosmetic molding die applied to the automatic manufacturing apparatus shown in FIG.

FIG. 7 is a perspective view showing a state where an upper mold of the mold shown in FIG. 6 is opened.

FIG. 8 is a sectional view taken along the line II in FIG. 6;

FIG. 9 is a sectional view taken in the direction of arrows II-II in FIG.

10 is an explanatory diagram of a mold opening device in the automatic manufacturing device shown in FIG.

11 is an explanatory view of a gap opening device in the automatic manufacturing device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mold 2 Mold part 3a, 3b Lower mold 3a ', 3b' Abutment surface 4a, 4b Pin hole 5 Through hole 6a, 6b Pin 7 Hard pipe 8 Coil spring

Claims (1)

(57) [Claims] 1. A mold (1) used for molding a bar-shaped cosmetic, comprising a plurality of abutting surfaces (3a ') and (3b') which are abutted so as to be able to come and go with each other. And a pair of lower dies (3a) and (3b) having opening / closing mechanisms (3c) for the abutment surfaces (3a ') and (3b') at both ends in the longitudinal direction. The opening and closing mechanism (3c) is connected to each of the lower dies (3a) and (3b) in a state where the lower dies (3a) and (3b) are spaced apart in the longitudinal direction.
b) and a pair of pin holes (4
a) and (4b), and the pair of pin holes (4a) and (4b).
b), each of which is slidably inserted into each of the lower molds (3) whose one end is pressed from the outside so that the other end is opposed.
b) a pair of pins (6a) and (6b) for pressing the abutment surfaces (3b ') and (3a') of (3a) to form a gap between the lower dies (3a) and (3b). , The pair of pin holes (4
a) and (4b), a through-hole (5) drilled through both lower molds (3a) and (3b), and a hard slidably inserted into the through-hole (5). A pipe (7), and a coil spring (8) that is extendably inserted into the hard pipe (7) with both edges supported at both ends of the through hole (5). A stick-shaped cosmetic mold.