KR101973281B1 - Foam forming molds with replaceable cavity modules - Google Patents

Abstract

The present invention relates to a mold for molding foam with a replaceable cavity module. According to the present invention, the mold for molding a foam with a replaceable cavity module comprises: a back plate having a plurality of first opening parts; a cavity plate connected to the back plate by a plurality of supporters, and having a second opening part positioned to correspond to the first opening parts; a cavity module positioned between the back plate and the cavity plate; and a core module coupled to be inserted into the cavity module. The cavity module includes: a small cavity plate having a first step formed on an outer circumference thereof, and detachably coupled to a second step formed on an inner circumference of the cavity plate; a small back plate for covering the first opening parts, and being in contact with the back plate to overlap; a small support for connecting the small cavity plate and the small back plate; and a cavity mold having a third step on an outer circumference thereof to be detachably coupled to an inner circumference of the small cavity plate. Therefore, when a product to be molded is changed, only the cavity module and the core module coupled to the cavity module can be changed without changing the whole molding mold to produce the product, thereby reducing a replacement time and a replacement cost.

Description

Cavity module replaceable foam foam mould {FOAM FORMING MOLDS WITH REPLACEABLE CAVITY MODULES}

The present invention relates to a cavity module replaceable foam foam molding mold, and more specifically, to a small cavity plate, a small back plate, a small support and a cavity mold based on a basic frame composed of a back plate, a cavity plate and a support stand. Cavity module comprising is characterized in that it is formed to enable insertion and removal. Due to this feature, when the product to be molded is changed, the product can be produced by changing only the cavity module and the core module coupled to the cavity module without changing the entire molding die, thereby reducing the replacement time and the replacement cost.

In general, foamed polypropylene (EPP) and foamed polystyrene (EPS) product molding molds use EPP and EPS granules, which are filled in the molding space of the EPP and EPS product molding molds by using high pressure steam. Mold the product.

Since EPP and EPS products are more environmentally friendly than materials such as urethane, they are frequently used for handles mounted on vehicles, especially for rims and sun visors.

Referring to Figure 1, the conventional EPP, EPS product molding mold is composed of a fixed mold 10 and a moving mold (20).

The fixed mold 10 includes a fixed support plate 12, a fixed frame 14 coupled to one side of the fixed support plate 12, and a core 16 coupled to one side of the fixed frame 14. .

The movable mold 20 is provided symmetrically with the fixed mold 10 so as to move toward the fixed mold 10 described above, and the movable mold 20 includes a movable support plate 22 and the movable support plate 22. It consists of a moving frame 24 coupled to one side of the, and a cavity 26 coupled to one side of the moving frame 24.

Here, a raw material injector 28 for supplying a raw material to a molding space formed between the cavity 26 and the core 16 is installed at a predetermined position on one side of the movable support plate 22, and is predetermined from the raw material injector 28. At least one ejecting mechanism 30 for removing the molded article formed in the molding space at intervals from the cavity 26 is provided.

In addition, a plurality of cooling water supply nozzles 32 connected to a cooling water supply pipe (not shown) are provided at predetermined positions on the inner surfaces of the fixed support plate 12 and the movable support plate 22.

However, as described above, the conventional EPP, EPS product molding mold, or the cavity 26 and the core 16 to form the product substantially is integrally provided in the moving frame 24 and the fixed frame 14, Since the moving frame 24 and the fixing frame 14 are bolted inside, it is common to replace the heavy and bulky moving mold 20 and the fixed mold 10 itself when the product to be molded is changed. For the sake of simplicity, if only the cavity 26 and the core 16 are to be replaced, the fixed support plate 12 and the movable support plate 22 are separated, and then the inside of the fixed frame 14 and the movable frame 24 are separated. Since the cavity 26 and the core 16, which are bolted on, must be separated, the workability and productivity decrease as the mold replacement time increases.

In addition, since the fixed mold 10 and the movable mold 20 should be manufactured separately for each product specification, the mold manufacturing cost has been increased, and the heavy and bulky fixed molds 10 and the movable mold 20 manufactured by the specifications are increased. There is a problem that the utilization of the factory site is lowered because it must be managed.

The present invention relates to a cavity module replaceable foam foam molding mold, wherein a cavity module including a small cavity plate, a small back plate, a small support and a cavity mold based on a base frame composed of a back plate, a cavity plate and a support is provided. Characterized in that the insertion and removal is possible. Due to this feature, when a conventional product to be molded is to be changed, it is necessary to change the entire molding die to solve the problem of replacement time and replacement costs that occur.

In order to achieve the above object, the cavity module replaceable foam foam molding mold according to the present invention is interconnected with the back plate by a back plate having a plurality of first openings and a plurality of supports, and positioned to correspond to the first opening. A cavity module positioned between the cavity plate, the back plate, and the cavity plate in which the second opening is formed, and a core module coupled to be inserted into the cavity module, wherein the cavity module has a first stepped portion formed at an outer circumference thereof, A small cavity plate detachably coupled to a second stepped portion formed around an inner circumference of the small cavity; The outer side to be detachably coupled to the inner circumference of the It comprises a mold cavity formed in the third stepped rail.

In addition, the core module of the cavity module replaceable foam foam molding according to the present invention, the core module, which is inserted along the inner surface of the cavity mold and closes the inside of the cavity mold, is combined with the core mold and positioned to correspond to the small cavity plate. And a frame core coupled along the outer perimeter of the small core plate and the small core plate.

In addition, a groove is formed at one point of the back plate which is in contact with the small back plate of the cavity module replaceable foam foam molding according to the present invention, and the o-ring is inserted into the groove so that steam does not flow out. It features.

Cavity module replaceable foam foam molding mold according to another embodiment of the present invention is a back plate formed by a plurality of first openings, the second opening is interconnected with the back plate by a plurality of supports, the second opening is located to correspond to the first opening A cavity module positioned between the cavity plate, the back plate and the cavity plate, and a core module coupled to be inserted into the cavity module, wherein the cavity module includes a first stepped at an outer circumference thereof to form an inner circumference of the cavity plate. A small cavity plate detachably coupled to a second step formed in the cover, a small back plate covering the first opening and overlapping with the back plate, a small support connecting the small cavity plate and the small back plate, and an inner circumference of the small cavity plate The third step is formed around the outer side to be detachably coupled to the And a plurality of pillar members connecting the formed cavity mold and the cavity mold with the small back plate.

In addition, the core module of the cavity module replaceable foam foam molding mold according to another embodiment of the present invention, the core mold is inserted along the inner surface of the cavity mold to close the inside of the cavity mold, combined with the core mold and the small cavity plate and And a frame core coupled along the outer periphery of the small core plate and correspondingly positioned small core plate.

In addition, a fourth step is formed on the outer circumference of the small core plate of the cavity module replaceable foam foam molding mold according to another embodiment of the present invention, and is detachably coupled to the fifth step formed on the inner circumference of the frame core. It is done.

In addition, the clamp is coupled to one surface of the small back plate and the inner surface of the back plate of the cavity module replaceable foam foam molding mold according to another embodiment of the present invention.

In addition, the bolt is formed through the small back plate and the clamp at the same time the cavity module replaceable foam foam molding mold according to another embodiment of the present invention is formed.

In addition, the bolt of the cavity module replaceable foam foam molding mold according to another embodiment of the present invention is characterized in that penetrating in a direction perpendicular to one surface of the small back plate.

In addition, a groove is formed at one point of the back plate which is in contact with the small back plate of the cavity module replaceable foam foam mold according to another embodiment of the present invention, and the groove has an o-ring so that steam does not flow out. It is characterized in that it is inserted.

Cavity module replaceable foam foam molding mold according to another embodiment of the present invention is a second back plate formed by a plurality of first openings, the back plate is interconnected with the back plate by a plurality of supports, the second position positioned to correspond to the first opening A cavity module positioned between the cavity plate, the back plate and the cavity plate, and a core module coupled to be inserted into the cavity module, wherein the cavity module has a first step on the outer circumference thereof, so that the inner circumference of the cavity plate is formed. A small cavity plate detachably coupled to a second step formed in the cover, a small back plate covering the first opening and overlapping with the back plate, a small support connecting the small cavity plate and the small back plate, and an inner circumference of the small cavity plate A third step around the outer side to be detachably coupled to the It comprises a cavity formed in the mold, and wherein the back plate has to be a flow path of the cooling water injected into the mold forming cavity.

In addition, the core module of the cavity module replaceable foam foam molding mold according to another embodiment of the present invention, the core mold is inserted along the inner surface of the cavity mold to close the inside of the cavity mold, combined with the core mold and the compact cavity plate A small core plate and a frame core coupled along the outer periphery of the small core plate, the clamp being coupled to one side of the small back plate and the inner side of the back plate at the same time, the small back plate and the clamp being formed. At the same time characterized in that the bolt penetrates.

In addition, at one point of the flow path of the cavity module replaceable foam foam molding mold according to another embodiment of the present invention, the injection pipe which protrudes in the direction in which the cavity mold is positioned to be adjacent to the cavity mold is extended, Cooling water is characterized in that the injection through the cavity mold.

Due to the structure in which the cavity module according to the embodiment of the present invention is inserted into and removed from the base frame and replaceable, unlike the related art, when a product to be molded is changed, the cavity module and the cavity are not newly attached to the entire mold. Since only the core module inserted into the module needs to be changed, it is possible to reduce mold replacement time and replacement cost.

In addition, the compact back plate according to an embodiment of the present invention overlaps the back plate, and due to the structure that is fixed by the clamp and the bolt, unlike the conventional stepped structure is strengthened rigidity unlikely unlikely to generate cracks This results in the effect of preventing the leakage of steam.

In addition, since the frame core and the small core plate, the small cavity plate and the cavity plate according to the embodiment of the present invention are coupled by complementary coupling of the step, it is easy to combine and remove each component to reduce the replacement time There is this.

In addition, the groove and the O-ring structure according to an embodiment of the present invention has the advantage of preventing the leakage of steam.

In addition, since the cavity mold is supported by the pillar member according to another embodiment of the present invention, a gap between a plurality of steps may be generated due to the deflection of the conventional cavity mold, thereby preventing the phenomenon of steam leakage.

In addition, the injection tube according to another embodiment of the present invention can increase the cooling efficiency of the cavity mold.

1 is a cross-sectional view of a conventional foam foam molding die.
2 to 5 is a view showing a mold bonding process of the cavity module replaceable foam foam molding mold according to an embodiment of the present invention.
6 is a cross-sectional view of a mold according to an embodiment of the present invention.
Figure 7 is a view showing the back of the foam foam molding mold according to an embodiment of the present invention.
Figure 8 is an enlarged cross-sectional view of the clamp portion of the foam foam molding die according to an embodiment of the present invention.
9 is a cross-sectional view of a foam foam molding mold according to another embodiment of the present invention.
10 is an enlarged view of a flow path and a spray pipe of the foam foam molding die according to another embodiment of the present invention.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. Effects and features of the present invention, and methods of achieving them will be apparent with reference to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various forms. In the following embodiments, the terms first, second, etc. are used for the purpose of distinguishing one component from other components rather than a restrictive meaning. Also, the singular forms “a”, “an” and “the” include plural forms unless the context clearly indicates otherwise. In addition, the terms including or have means that the features or components described in the specification are present, and does not preclude the possibility of adding one or more other features or components. In addition, in the drawings, components may be exaggerated or reduced in size for convenience of description. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, and thus the present invention is not necessarily limited to the illustrated.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be denoted by the same reference numerals, and redundant description thereof will be omitted. .

2 to 5 show the mold bonding process of the cavity module replaceable foam foam molding mold according to the present invention, Figure 6 shows a cross-sectional view of the combined mold.

Referring to Figure 6, it will be described the components of the foam foam molding mold according to an embodiment of the present invention. Foam foam molding according to the present invention includes a back plate 100, cavity plate 200, the support 300, the cavity module 400, the core module 500 and the clamp 600.

The back plate 100 has a predetermined thickness, and preferably has a panel shape. Preferably, the back plate 100 is provided with a plurality of first openings 101 at predetermined intervals. 2 to 6 illustrate, for example, a first opening 101 having a rectangular shape, but is not necessarily limited to this shape.

The small back plate 420 of the cavity module 400, which will be described later, centers on the first opening 101 and overlaps the back plate 100. Detailed description thereof will be described later.

The cavity plate 200 is preferably a panel shape having a predetermined thickness like the back plate 100. At this time, it is preferable that a plurality of second openings 202 are formed in the cavity plate 200 at predetermined intervals so as to correspond to the positions of the first openings 101. In this case, the second opening portion 202 corresponding to the position of the first opening portion 101 means that the first opening portion 101 and the second opening portion 202 are positioned to face each other.

The back plate 100 and the cavity plate 200 are coupled by a plurality of supports 300 extending in the longitudinal direction. Therefore, the back plate 100 and the cavity plate 200 are spaced apart by the length of the support 300, the entire combined form a basic frame.

The cavity module 400 is located between the back plate 100 and the cavity plate 200. The cavity module 400 may be inserted between the back plate 100 and the cavity plate 200 through the second opening 202. In addition, the second opening 202 can be detached to the outside. Therefore, the cavity module 400 can be inserted and removed based on one basic frame described above, thereby forming a replaceable structure.

The cavity module 400 includes a small cavity plate 410, a small back plate 420, a small support 430, and a cavity mold 440.

Small cavity plate 410 is a panel shape having a predetermined thickness, it is preferable that the opening is formed to the cavity mold 440 is coupled. In addition, the small cavity plate 410 is coupled to the inside of the cavity plate 200 is coupled to the cavity plate 200.

In this case, it is preferable that the first step 411 is formed at the outer circumference of the small cavity plate 410. In addition, the second step 201 may be formed at an inner circumference of the cavity plate 200 to correspond to the first step 411. As shown in FIG. 6, the first step 411 and the second step 201 are complementarily coupled to each other. Therefore, when the cavity module 400 is inserted through the second opening 202, the small cavity plate 410 is engaged with and supported by the cavity plate 200.

Due to this structure, the coupling force of the cavity module 400 when it is coupled to the base frame is increased. In addition, there is an advantage that the insertion and removal of the cavity module 400 and the base frame can be easily removed.

Small back plate 420 is preferably a panel shape having a predetermined thickness. The small back plate 420 is positioned at a predetermined interval in the longitudinal direction with the small cavity plate 410, and is positioned to face each other. In addition, the small back plate 420 faces the small cavity plate 410 through a plurality of small support members 430 extending in the longitudinal direction.

At this time, the small back plate 420 covers the first opening 101 formed in the back plate 100 and overlaps the back plate 100 along the periphery of the first opening 101. The small back plate 420 is fixed by the back plate 100 and the clamp 600. The description thereof will be described later.

The cavity mold 440 is coupled to the inside of the small cavity plate 410. At this time, it is preferable that the third step 441 is formed at the outer circumference of the cavity mold 440. The third step 441 may be detachably coupled along the inner circumference of the small cavity plate 410. Due to this structure, the cavity mold 440 can be easily coupled to and removed from the cavity plate 410. In addition, the coupling force between the small cavity plate 410 and the cavity mold 440 may be increased. Although not shown in FIG. 6, the small cavity plate 410 and the cavity mold 440 may be fixed by bolts not shown. The small cavity plate 410 and the cavity mold 440 may be fixed through a bolt that passes through at the same time.

The cavity module 400 is a space where the raw material is molded. Therefore, when a structure capable of replacing the cavity module 400 based on the basic frame formed through the back plate 100, the cavity plate 200, and the support 300 is formed as above, the product specification is changed unlike in the prior art. If the basic frame is not necessary to replace only the cavity module 400 in accordance with the product specifications to be replaced. As a result, the product can be manufactured by replacing only a part of the mold without replacing the entire mold, thereby reducing workaround time and increasing productivity. In addition, since the base frame is not required to have a plurality, there is an advantage that the utility of the factory site is increased.

The core module 500 includes a core mold 510, a small core plate 520, and a core plate 530. The core mold 510 may be inserted along the inner surface of the cavity mold 440 and close the inside of the cavity mold 440. As a result, the cavity mold 440 and the core mold 510 can make a space in which the foam foam can be molded.

The small core plate 520 is coupled with the core mold 510. In addition, the small core plate 520 is positioned to correspond to the small cavity plate 410. In this case, the position corresponding to the small cavity plate 410 means that the small cavity plate 410 is positioned to be in contact with the small cavity plate 410. In FIG. 6, the hollow part is formed at the center of the small cavity plate 410, but is not necessarily limited to this shape.

The core plate 530 is coupled along the outer perimeter of the small core plate 520. At this time, the fourth step 521 is formed at the outer circumference of the small core plate 520, and the fifth step 531 is formed at the inner circumference of the core plate 530. In addition, the fourth step 521 and the fifth step 531 may be complementarily coupled to each other.

As a result, the coupling force between the core plate 530 and the small core plate 520 is increased. In addition, since the core plate 530 and the small core plate 520 are easily detached from each other, there is an advantage of easy coupling and detachment.

The clamp 600 is coupled to the back plate 100 and the small back plate 420 simultaneously. In order to explain the coupling structure of the clamp 600 and the effects thereof, FIGS. 7 and 8 will be referred to together with FIG. 6.

Figure 7 is a view showing the back of the foam foam molding mold according to an embodiment of the present invention, Figure 8 is an enlarged cross-sectional view of the clamp portion of the foam foam molding mold according to an embodiment of the present invention.

As described above, the small back plate 420 abuts on the back plate 100. Even in the conventional case, a molding die has been developed in which components corresponding to the cavity module 400 of the present invention are replaceable. However, it has a structure in which the corresponding components of the back plate 100 and the small back plate 420 of the present invention are combined to form a stepped structure.

As described above, the back plate 100 and the small back plate 420 are coupled through the stepped structure, and the following problems occur. Coupled with a stepped structure means that the thickness of the end is made thinner than the thickness of the entire body. This weakens the rigidity of the joining portion.

If the stiffness of the step portion is weakened, cracks may occur, and steam may leak due to the cracks. In addition, when the thickness of the stepped portion is increased in order to reinforce the rigidity of the stepped portion, there is a problem that the cost of manufacturing the mold increases.

However, according to the exemplary embodiment of the present invention, the back plate 100 and the small back plate 420 are not directly coupled in a stepped structure, but directly contact with each other, so that there is no portion where the thickness is reduced and the rigidity is weakened. .

In addition, when the cavity module 400 is inserted into the basic frame through the second opening 202, the small back plate 420 is brought into contact with the back plate 100 to be fixed with the clamp 600, and the cavity module 400 is fixed. When assembling the first step 411 complementarily to the second step 201 formed in the cavity plate 200 to fix the position of the 400, the entire cavity module 400 is fixed, so assembling and removing There is an easy and quick advantage.

At this time, in the present invention, the clamp 600 is used to fix the back plate 100 and the small back plate 420. Referring to FIG. 8, the clamp 600 is simultaneously coupled to one side of the small back plate 420 and the inner side of the back plate 100. In addition, the small back plate 420 and the bolt 700 which penetrates the clamp 600 at the same time are coupled to fix the small back plate 420 and the clamp 600.

Referring to FIG. 8, the lower portion of the clamp 600 presses the small back plate 420, and the side of the clamp 600 and the upper portion of the clamp 600 press the back plate 100. Thus, the clamp 600 forms a structure in which the small back plate 420 and the back plate 100 are in contact with each other, and a structure in which steam is not leaked is formed.

In addition, since the clamp 600 is brought into contact with the small back plate 420 and the back plate 100 at the same time, and the bolt 700 is inserted, the assembly of the mold is easy and the assembly time is shortened. At this time, the bolt 700 is preferably penetrated in a direction perpendicular to one surface of the small back plate 420. When not penetrating in the vertical direction, the center of gravity is oriented in a specific direction, which causes the clamp 600 to be oriented in only one portion of the small back plate 420 and the back plate 100 at the same time. Because it can occur.

A groove 800 is preferably formed at one point of the back plate 100 that contacts the small back plate 420. In addition, it is preferable that an o-ring 810 is inserted into the groove 800. Due to the structure of the groove 800 and the O-ring 810, it is possible to reduce the possibility of the steam leaking to the outside. That is, it serves as a kind of spare device.

The flow path 1000 through which the coolant W is injected is coupled to the back plate 100 according to the exemplary embodiment of the present invention. A plurality of nozzles in which the cooling water W is injected are formed at a plurality of points of the flow path 1000, and the cooling water W injected through the nozzle contacts the cavity mold 440 to generate a cooling effect.

With reference to Figures 2 to 5 to explain the assembly process of the foam foam molding according to an embodiment of the present invention.

Referring to FIG. 2, the cavity module 400 is inserted into a basic frame including the back plate 100, the cavity plate 200, and the support 300. In this case, the cavity module 400 is coupled to the core module 500 except for the core plate 530, and the cavity module 400 is inserted into the basic frame in a state where the cavity module 400 and the core module 500 are coupled to each other. In this case, the cavity module 400 and the core module 500 may be selected to produce a foam of a desired shape.

Upon insertion, the structure as shown in FIG. 3 is formed. The small back plate 420 and the back plate 100 are coupled by the clamp 600 and the bolt 700, and the cavity plate 200 and the small cavity plate 410 have a first step 411 and a second step. Due to the 201 structure, it is complementarily coupled. In addition, the cavity mold 440 is formed with a third step 441 is coupled to the small cavity plate 410.

Referring to FIG. 4, while the core plate 530 is in contact with the cavity plate 200, the fourth step 521 formed in the small core plate 520 and the fifth step formed in the core plate 530 ( 531) complementarily. Finally, the combined state is as shown in FIG. For this reason, due to the stepped structure and the clamp 600, the coupling force between the base frame, the cavity module 400 and the core module 500 is increased, and the possibility of steam leakage is reduced. In addition, there is an advantage that the replacement time is shortened by easy replacement. In addition, a portion of the small back plate 420 and the back plate 100 in contact with each other to form an abutting structure to enhance the rigidity.

9 is a view showing a cross-sectional view of the foam foam molding mold according to another embodiment of the present invention.

The foam foam molding mold according to another embodiment of the present invention includes all the components and effects of the foam foam molding mold according to the embodiment. At this time, the foam foam molding mold according to another embodiment further includes a pillar member (900).

The pillar member 900 is a member extending in the longitudinal direction. At this time, one end of the pillar member 900 abuts with the cavity mold 440 and the other end of the pillar member 900 abuts with the small back plate 420. According to one embodiment, the cavity mold 440 may cause sagging due to weight. As a result, a gap may occur between a plurality of stepped portions, thereby causing a problem of leaking steam.

However, according to another embodiment of the present invention, since the small back plate 420 and the pillar member 900 support the cavity mold 440, the deflection phenomenon of the cavity mold 440 may be prevented, thereby It is possible to prevent the occurrence of a gap between a plurality of stepped. In addition, it is preferable that a plurality of pillar members 900 are formed. This is to increase the bearing capacity. In addition, the pillar member 900 is preferably coupled to the back plate 420 by a pillar member bolt 910 penetrating through the pillar member 900. This is to facilitate the coupling and removal.

The fixing nut 710 may be coupled to the end of the bolt 700 according to another embodiment of the present invention. This may also apply to one embodiment. At this time, between the fixing nut 710 and the clamp 600 according to another embodiment of the present invention, it is preferable that the support plate 610 through which the bolt 700 passes. When the fixing nut 710 is in direct contact with the clamp 600, the clamp 600 may be damaged due to friction as time passes. As a result, a crack is generated in the clamp 600, and steam may leak. However, according to another exemplary embodiment of the present invention, the support plate 610 prevents the fixing nut 710 and the clamp 600 from directly contacting each other, thereby extending the life of the clamp 600.

10 is an enlarged view illustrating a flow path and an injection pipe of the foam foam molding die according to another embodiment of the present invention. Hereinafter, with reference to Figure 10 will be described with respect to the foam foam molding mold according to another embodiment of the present invention.

The foam foam molding mold according to another embodiment of the present invention includes a foam foam molding mold according to one embodiment or a foam foam molding mold according to another embodiment.

At this time, in the foam foam molding mold according to another embodiment, the injection pipe 1100 is formed to extend in the flow path (1000). At this time, it is preferable that the end of the injection pipe 1100 is bent at a predetermined angle θ so that the end of the injection pipe 1100 faces the cavity mold 440.

In the case of the foam foam molding die according to one embodiment or another embodiment, the cavity mold 440 is cooled only by the nozzles formed at the plurality of points of the flow path 1000 and the flow path 1000. However, there is a certain distance between the nozzle and the cavity mold 440, and the cooling water W cannot be injected to the cavity mold 440 intensively due to the limitation of the structure of the nozzle. This causes a problem of low cooling efficiency.

However, according to another embodiment of the present invention, the point where the cooling water (W) is injected is closer to the cavity mold 440 than one embodiment or another embodiment, the cooling water (W) of the contact with the cavity mold 440 The amount is increased to increase the cooling efficiency.

In addition, it is preferable that predetermined angle (theta) is an angle which makes the tangent of the outer part of the cavity die 440 parallel with the tangent of the edge part of the injection pipe 1100. This is to maximize the cooling efficiency by allowing the cooling water (W) to reach the cavity mold 440 as much as possible.

Embodiments according to the present invention described above can be implemented in the form of program instructions that can be executed by various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the computer-readable recording medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, and magneto-optical media such as floptical disks. medium) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be modified with one or more software modules to perform the processing according to the present invention, and vice versa.

Particular implementations described in the present invention are embodiments and do not limit the scope of the present invention in any way. For brevity of description, descriptions of conventional electronic configurations, control systems, software, and other functional aspects of the systems may be omitted. In addition, the connection or connection members of the lines between the components shown in the drawings by way of example shows a functional connection and / or physical or circuit connections, in the actual device replaceable or additional various functional connections, physical It may be represented as a connection, or circuit connections. In addition, unless specifically mentioned, such as "essential", "important" may not be a necessary component for the application of the present invention.

In addition, in the detailed description of the present invention described with reference to a preferred embodiment of the present invention, those skilled in the art or those skilled in the art having ordinary knowledge of the present invention described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the spirit and scope of the art. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

100... Back plate 101... First opening
200... Cavity plate 201... Second step
300... Support 400... Cavity module
410... Small cavity plate 411... First step
420... Small back plate 430... Small support
440... Cavity mold 441... Third step
500... Core module 510... Core mold
520... Small core plate 530... Core plate
531... Fifth step 600... clamp
700... Bolt 800... Groove
810... O-ring 900... Pillar
910... Pillar member bolt 1000... Euro
1100... Injection pipe

Claims (17)

A back plate having a plurality of first openings formed therein;
A cavity plate interconnected with the back plate by a plurality of supports and having a second opening positioned to correspond to the first opening;
A cavity module located between the back plate and the cavity plate; And
And a core module coupled to be inserted into the cavity module.
The cavity module may include: a small cavity plate having a first stepped portion formed on an outer circumference thereof and detachably coupled to a second stepped formed on an inner circumference of the cavity plate; A small back plate covering the first opening and overlapping with the back plate; A small support connecting the small cavity plate and the small back plate; A cavity mold having a third stepped portion formed on the outer circumference thereof to be detachably coupled to the inner circumference of the small cavity plate; A plurality of pillar members, one end of which is coupled to the cavity mold to support the cavity mold and the other end of which extends in a longitudinal direction to abut on the small back plate; And a plurality of pillar member bolts penetrating the respective pillar members to engage with the back plate.
The core module may include: a core mold inserted along an inner surface of the cavity mold to close an inside of the cavity mold; A small core plate coupled with the core mold and positioned to correspond with the small cavity plate; And a frame core coupled along an outer circumference of the small core plate.
A fourth step is formed at an outer circumference of the small core plate, and is detachably coupled to a fifth step formed at an inner circumference of the frame core.
A clamp is formed to simultaneously engage one side of the small back plate and the inner side of the back plate such that a lower portion presses one side of the small back plate, and a side portion and an upper portion pressurize an inner side surface of the back plate.
A bolt is formed to pass through the small back plate and a part of the clamp at the same time in a state perpendicular to one surface of the small back plate,
Grooves are formed at one point of the back plate in contact with the small back plate, and an o-ring is inserted into the grooves so that steam does not flow out.
The back plate is formed with a flow path of the cooling water is injected into the cavity mold, and at one point of the flow path is projected in the direction in which the cavity mold is located so as to be adjacent to the cavity mold is spray pipe for injecting the cooling water into the cavity mold Extends,
The injection tube is bent so that the tangent of the outer portion of the cavity mold has an angle parallel to the tangent of the end of the injection tube is formed so that the end of the injection tube toward the cavity mold foam foam, characterized in that Foam molding mould.
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