KR20170138193A - Injection apparatus for cosmetics container - Google Patents

Abstract

The present invention relates to an injection apparatus for a cosmetic container, which comprises: a first mold which includes a seating groove unit; a second mold which is movably supported by a first cylinder so as to be inserted in the seating groove unit, and includes a molding groove unit; a third mold which is movably supported by a second cylinder so as to be joined to the second mold, and includes a threading unit; a fourth mold which is inserted in the molding groove unit, includes a molding protrusion unit for molding a storage groove unit of a cosmetic container, and is movably supported by a third cylinder; a cooling unit which, after an injection process is proceeded on a workpiece injected into the molding groove unit, supplies cooling water to the first mold and the fourth mold to cool the workpiece; and a deformation prevention unit which prevents contraction or bending of the surface of the workpiece that may occur as the workpiece is quenched by hot water supplied to the second mold and the third mold after the first mold is released.

Description

[0001] INJECTION APPARATUS FOR COSMETICS CONTAINER [0002]

The present invention relates to an injection apparatus for a cosmetic container, and more particularly, to an injection apparatus for a cosmetic container, which comprises a cooling unit and a deformation preventing unit to which cooling water and heating water are supplied after an injection process, To an injection apparatus for a cosmetic container which can prevent surface contraction or warpage.

In general, the cosmetic container is a factor that has a great influence on the purchasing psychology of the cosmetic consumer so that the differentiation through the container package becomes a marketing strategy. Therefore, the cosmetic containers are applied with a high-level strategy in design and materials, The price has been high, reflecting the price of the product.

Meanwhile, since many cosmetic containers are made of plastic materials, most of them are manufactured by the injection molding method. Specifically, each of the components constituting the cosmetic container is separately injection-molded, and the molded parts are assembled Cosmetic containers are produced.

The production method of the cosmetic container is another cause of increasing the manufacturing cost due to an increase in the number of manufacturing processes and wasted materials through several injection molding. As a result, it becomes an important factor for raising the cost of cosmetics.

Therefore, a new form of cosmetic container is required to stimulate the purchase of cosmetics consumers by reducing the manufacturing cost and giving freshness to existing cosmetics containers.

In order to solve the above problems, an integral injection molding cosmetic container has been developed. In the conventional injection molding cosmetic container according to the related art, a main runner part forming an outer packaging case, a main runner part connected to the main runner part, And a cap portion connected to the main runner portion and formed to be cutable from the main runner portion and coupled to open and close the container portion so that the main runner portion, Molded integrally by injection molding.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2012-0037830 (published on April 20, 2012, entitled Integrated Injection Molded Cosmetic Container).

Since the cosmetic container according to the prior art is made of polypropylene (PP) which is a thermoplastic resin and a crystalline resin and has good chemical resistance in order to maintain a high quality, the surface shrinkage and warping phenomenon .

Therefore, there is a need for improvement.

The present invention relates to an injection apparatus for a cosmetic container which is provided with a cooling part and a deformation preventing part to which cooling water and heating water are supplied after the injection step is performed and which can prevent shrinkage or warping of the cosmetic container, The purpose is to provide.

According to the present invention, there is provided a mold comprising: a first mold having a seating groove; A second mold supported movably by a first cylinder to be inserted into the seating groove and having a forming groove; A third mold movably supported by the second cylinder to be coupled to the second mold and having a spiral groove; A fourth metal mold inserted into the molding cavity and having a molding protrusion for molding a receiving groove of the cosmetic container, the fourth mold being movably supported by the third cylinder; A cooling unit that supplies cooling water to the first mold and the fourth mold to cool the workpiece after the injection process is performed on the workpiece to be injected into the molding cavity; And a deformation preventing unit for supplying hot water to the second mold and the third mold after the first mold is separated to prevent surface contraction and warping caused by rapid cooling of the workpiece.

The cooling section of the present invention may further include: a first cooling passage formed in the first mold and supplied with cooling water; And a second cooling channel formed in the fourth mold and supplied with the middle-temperature water.

The deformation preventing portion of the present invention may further include: a first heating passage formed in the second mold and supplied with hot water; And a second heating channel formed in the third mold and supplied with hot water.

The injection apparatus for a cosmetic container according to the present invention includes a cooling unit and a deformation preventing unit to which cooling water and heating water are supplied after the injection process, so that the cooling and heating of the mold during the injection process, Can be prevented.

In the injection apparatus for a cosmetic container according to the present invention, the third mold for forming the thread formed in the opening of the cosmetic container is provided with spiral grooves, and the third mold and the second mold are detachably connected, It is possible to separate the second mold and the third mold from each other and easily separate the cosmetic container from the injection apparatus, thereby saving time and cost for manufacturing the cosmetic container.

1 is a perspective view showing a cosmetic container and a sectional view showing an injection apparatus for a cosmetic container according to an embodiment of the present invention.
2 is an exploded perspective view illustrating an injection apparatus for a cosmetic container according to an embodiment of the present invention.
3 is a bottom perspective view illustrating an injection device detachment portion for a cosmetic container which is easy to take out according to another embodiment of the present invention.
4 is an operational state diagram illustrating an injection device detachment portion for a cosmetic container which is easy to take out according to another embodiment of the present invention.

Hereinafter, an embodiment of an injection apparatus for a cosmetic container according to the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view of a cosmetic container according to an embodiment of the present invention, and FIG. 2 is a perspective view of an injection apparatus for a cosmetic container according to an embodiment of the present invention. to be.

1 and 2, an injection apparatus for a cosmetic container according to an embodiment of the present invention includes a first mold 12 having a seating groove 12a, A second mold 14 movably supported by the cylinder 72 and having a molding groove 14a and a second cylinder 14 movably supported by the second cylinder 74 to be coupled to the second mold 14, And a molding projection 18a that is inserted into the molding groove 14a and forms the storage groove 102 of the cosmetic container 100. The third mold 16 And cooling water is supplied to the first mold 12 and the fourth mold 18 after the injection process is performed on the workpiece to be injected into the molding groove 14a A cooling unit 30 for cooling the workpiece; and a cooling unit 30 for supplying hot water to the second mold 14 and the third mold 16 after the first mold 12 is separated, (12) to the fourth mold (18) after the completion of the injection process, and the third mold (16) and the third mold (16) And separating the third mold 16 into a plurality of blocks so as to separate the cosmetic container 100 which is placed in the spiral groove 16a of the spiral groove 16a.

In the present embodiment, the cosmetic container 100 is manufactured by molding polypropylene having a good chemical resistance with the use of a polypropylene which can be molded to a predetermined value thickness or more to improve the supply feeling of the container and which has good chemical resistance. In the first to fourth molds, (18) are combined to form a work space in which the cosmetic container (100) is molded, and a melt of polypropylene is injected into the work space to perform an injection process.

The second mold 14 is closely inserted into the seating groove 12a of the first mold 12 and the third mold 16 is coupled to the opening edge of the molding cavity 14a of the second mold 14, A molding protrusion 18a protruding from the fourth mold 18 is inserted into the molding groove portion 14a so as to maintain a gap therebetween.

Thereafter, the workpiece made of molten polypropylene is injected through the supply passage (not shown) formed in the fourth mold 18, and the injection process is performed while curing into the shape of the cosmetic container 100.

The cooling unit 30 includes a first cooling channel 32 formed in the first mold 12 and supplied with cooling water and a second cooling channel 34 formed in the fourth mold 18 and supplied with medium temperature water The first mold 12 is cooled at an early stage of the injection process so that the second mold 14 disposed in close contact with the first mold 12 is conducted to cool the inside of the molding cavity 14a to a low temperature, Thereby curing the object.

Since the coolant is supplied to the second heating flow path 54 formed at the forming projection 18a, the cooling water is supplied to the second heating flow path 54, so that the workpiece, which is supplied along the supply flow path formed in the fourth mold 18, Thereby maintaining the temperature.

The cooling water flowing along the first cooling flow path 32 maintains the temperature of 5 to 15 ° C to cure the workpiece that has already flowed into the forming trench 14a while cooling it, The intermediate temperature water is maintained at a temperature of 50 to 60 ° C to prevent the workpiece supplied to the molding cavity 14a through the fourth mold 18 from hardening more quickly than necessary and to maintain the fluidity of the workpiece.

The deformation preventing portion 50 of the present embodiment is provided with a first heating passage 52 formed in the second mold 14 and supplied with high temperature water and a second heating passage 52 formed in the second mold 14, And a heating passage 54.

When the injection of the small workpiece as described above is completed, the first cylinder 72, the second cylinder 74, and the third cylinder 76 are driven to move from the seating groove portion 12a of the first mold 12 to the second The mold 14, the third mold 16 and the fourth mold 18 are separated and the high temperature water maintaining the temperature of 90 to 130 캜 is supplied to the second mold 14.

This is because an effect of supplying high temperature thermal energy to the outer surface of the cosmetic container 100 cured by the cooling water of the first metal mold 12 to smoothly finish the surface of the container appears. Therefore, the second metal mold 14 and the third metal mold 16 to prevent the surface of the container from being shrunk or warped due to the difference in temperature between them.

The second rod 74a and the third rod 76a are inserted into the second cylinder 74 and the third cylinder 76 when the injection process is completed and the surface of the container is smoothly closed, The third mold 16 and the fourth mold 18 are separated from the second mold 14 at different distances from each other.

The thread 104 of the cosmetic container 100 is detached from the molding groove 14a while being held in a state of being bolted to the spiral groove 16a formed on the inner wall of the central hole of the third mold 16 .

Thereafter, the operator separates the cosmetic container 100 in a state of being bolted to the spiral groove 16a from the third mold 16 while rotating the cosmetic container 100. [

In the present embodiment, the first rod 72a is projected and retracted from the first cylinder 72, the second rod 74a is projected and retracted from the second cylinder 74, (80) for preventing the plurality of cylinders and the mold from interfering with each other when the first to fourth molds (12 to 18) are coupled or separated while the first and second molds (76a, 76a)

The interference preventing portion 80 includes a plurality of first interference groove portions 82 formed in the first metal mold 12 and a second interference groove portion 82 formed alternately between the plurality of first interference groove portions 82 84).

The engaging drive unit 70 for engaging or disengaging the second mold 14, the third mold 16 and the fourth mold 18 with the first mold 12 is provided with a first rod 72a, A first cylinder 72 in which the mold 14 is connected and protruded, a second cylinder 74 in which the third mold 16 is movably connected by the second rod 74a, A third cylinder 76 which is movably connected by the third rod 76a and a third cylinder 76 which is extended in the lateral direction from the second mold 14 and which are integrally connected by a first connecting rod 77a, A plurality of first extending portions 77 supported by the first rods 74a and extending laterally from the third molds 16 and integrally connected by the second connecting rods 78a to the third rods 76a And a second extension base 78 supported.

Accordingly, when the first rod 72a and the second rod 74a are projected toward the seating groove 12a, the first extension rod 77, the first rod 77a, the second extension rod 78, The first extended portion 77 is inserted into the first interference groove portion 82 and the second extended portion 78 is inserted into the second interference groove portion 84. In this case, It is possible to prevent the first mold 12 from interfering with the first extension 77 and the second extension 78 while being inserted.

Since the stepped portion formed on the bottom surface of the second interference groove portion 84 is formed to be higher than the bottom surface of the first interference groove portion 82, the first extension portion 77 and the second extension portion 78 are formed in the first interference groove portion 82, and the second interference groove portion 84, the first extension portion 77, the second extension portion 78, and the first connection portion The third mold 16 and the fourth mold 18 can be raised and lowered without interfering with each other by intervening between the first and second connecting rods 77a and 77a and the second connecting rod 78a.

FIG. 3 is a bottom perspective view of an injection apparatus detachment unit for a cosmetic container according to an exemplary embodiment of the present invention, and FIG. 4 is an operational state diagram illustrating an injection apparatus detachment unit for a cosmetic container according to an exemplary embodiment of the present invention.

3 to 4, an injection apparatus for a cosmetic container according to another embodiment of the present invention separates the first to fourth molds 12 to 18 after the completion of the injection process, (90) for separating the third mold (16) into a plurality of blocks so as to separate the cosmetic container (100) placed on the spiral grooves (16a) of the first mold (16).

The rejection unit 90 includes a second extending base 78 extending from the first separating die constituting one side of the third mold 16 and a second extending base 78 extending from the second separating die constituting the other side of the third mold 16 A support frame 92 in which a guide groove 92a is formed so as to be slidably supported by the second extension base 78 and a support frame 92 which is formed in an inward direction from an end of the second linkage 78a, 1 sliding groove portion 94 and a protruding and retracting shaft 96 inserted into a sliding groove portion 94 having a stopper 96a and having a stopper 96a and a stopper 96a interposed between the stopper 96a and the engaging projection 94a. And an opening and closing cylinder 98 provided on the support frame 92 and connecting or separating the first and second molds by adjusting the distance between the plurality of second connecting blocks 78a, .

The first rod 72a, the second rod 74a and the third rod 76a are connected to the first cylinder 72, the second cylinder 74 and the third cylinder 76 When the rod is inserted into the opening and closing cylinder 98, the elastic member 97 is compressed and the protruding and retracting shaft 96 is moved in the direction The first separating die and the second separating die which are supported by the respective second connecting legs 78a are separated into a semicircular shape by being separated from the pair of second connecting legs 78a while being projected to the outside of the sliding recess 94. [ do.

Therefore, the threaded portion 104 of the cosmetic container 100 is separated from the spiral portion 16a by the semicircular strips, and the third mold 16, which is formed in a circular band shape, So that the operator can easily separate the cosmetic container 100 from the third mold 16.

Accordingly, there is provided an injection apparatus for a cosmetic container which is provided with a cooling part and a deformation preventing part to which cooling water and heated water are supplied after the injection step, and which can prevent shrinkage or warpage of the cosmetic container .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

Further, although an injection apparatus for a cosmetic container has been described as an example, the present invention is merely an example, and an injection apparatus for a cosmetic container of the present invention can be used for products other than an injection apparatus for a cosmetic container.

Accordingly, the true scope of the present invention should be determined by the following claims.

12: first mold 12a:
14: second mold 14a: molding groove
16: Third mold 16a: Spiral work
18: fourth mold 18a: forming protrusion
30: cooling section 32: first cooling flow passage
34: second cooling flow passage 50: deformation preventing portion
52: first heating passage 54: second heating passage
70: coupling drive part 72: first cylinder
72a: first rod 74: second cylinder
74a: second rod 76: third cylinder
76a: third load 77: first extension
77a: first connecting rod 78: second extending rod
78a: second connecting rod 80: interference preventing part
82: first interference groove part 84: second interference groove part
86: step difference 90: denial
92: Support frame 92a: Guide groove
94: slide groove portion 94a:
96: Emergency axis 96a: Stopper
97: elastic member 98: opening / closing cylinder
100: container 102: storage groove
104: Threaded

Claims (3)

A first mold having a seating groove;
A second mold supported movably by a first cylinder to be inserted into the seating groove and having a forming groove;
A third mold movably supported by the second cylinder to be coupled to the second mold and having a spiral groove;
A fourth metal mold inserted into the molding cavity and having a molding protrusion for molding the receiving groove of the cosmetic container and movably supported by the third cylinder;
A cooling unit that supplies cooling water to the first mold and the fourth mold to cool the workpiece after the injection process is performed on the workpiece to be injected into the molding cavity; And
And a deformation preventing unit for supplying high temperature water to the second mold and the third mold after the first mold is separated to prevent a surface contraction and a bending phenomenon caused by rapid cooling of the workpiece, Injection device.
The refrigerator according to claim 1,
A first cooling passage formed in the first mold and supplied with cooling water; And
And a second cooling flow passage formed in the fourth mold and supplied with a middle temperature water. The image forming apparatus according to claim 1,
A first heating passage formed in the second mold and supplied with hot water; And
And a second heating channel formed in the third mold and supplied with high temperature water.

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