KR102442636B1 - Mold apparatus - Google Patents

Abstract

The present invention relates to a mold apparatus. The mold apparatus comprises: a moving mold frame (10) which is provided in the form of a frame having a first inner space (11) and includes a convex core (12) having a convex shape and provided on the front in a traveling direction, a coolant line (13) installed in the first inner space to be connected to the outside, a steam supply port (14) provided in one side of an outer surface, and a discharge port (15) provided in the other side of the outer surface to discharge an internal coolant, steam, and air to the outside; and a fixed mold frame (20) which is provided in the form of a frame having a second inner space (21) and includes a concave core (22) having a concave shape and provided on the front facing the convex core, a coolant line (23) installed in the second inner space to be connected to the outside, a steam supply port (24) provided in one side of an outer surface, a discharge port (25) provided in the other side of the outer surface to discharge an internal coolant, steam, and air to the outside, a feeder (26) injecting air and a mold raw material to the opposite side facing the concave core and an ejector (27) separating a molded product from the concave core. Accordingly, a separate auxiliary discharge port is provided on the opposite side of the discharge port such that the air supplied into a cavity together with the mold raw material being injected is smoothly discharged to the outside such that defects caused by the cavity that is not sufficiently filled with the mold raw material are prevented in advance. As a result, work efficiency can be improved through continuous work without defects, and subsequently, product competitiveness can be improved.

Description

Mold Equipment {MOLD APPARATUS}

The present invention relates to a mold apparatus, and more particularly, a separate auxiliary outlet is provided on the opposite side of the outlet through which steam, cooling water, and air of a moving mold and a fixed mold are discharged to the outside. It relates to a mold device that allows the supplied air to be smoothly discharged to the outside.

In general, in the molding of Styrofoam synthetic resin, the particles first foamed in the foaming machine are filled into the inside of the mold, and steam heat is applied to form a mold-shaped model, and after cooling the heated mold, the mold is opened. will take out

When working with Styrofoam products in this general way, if there are several cavities in a mold, the amount of air injected and discharged to the outside should be the same or less when filling the raw material grains with air.

However, when the amount of discharged air is greater than the amount of injected air, the air collides with each other inside the mold and flows back toward the inlet, so that the raw material cannot be filled smoothly, and the product is molded in this filled state, which causes a defect.

On the other hand, in the process of product molding, steam, water and air are discharged through the steam inlet, cooling water inlet, air inlet, and two drains (outlets) on the lower side of the frame (mold).

In addition, the discharge of steam, cooling water and air is discharged without unreasonableness regardless of the number of mold cavities (inlet and outlet of a certain size). The amount of air is increased, but in the prior art, the exhaust port is disposed only on the lower side of the mold, so that the increased air cannot be sufficiently discharged to the outside, which leads to product defects.

Republic of Korea Patent Publication No. 10-2012-0056097

The present invention was devised to solve this problem, and a separate auxiliary outlet is provided on the opposite side of the outlet through which the steam, cooling water and air of the moving mold and the fixed mold are discharged to the outside. By allowing the supplied air to be smoothly discharged to the outside, if the air inside the mold is not completely discharged to the outside through the outlet and remains, it prevents the mold raw material from being sufficiently filled and leads to defects. An object of the present invention is to provide a mold apparatus that can be used.

As described above, the mold apparatus according to an embodiment of the present invention has a frame shape having a first inner space, a convex core having a convex shape is provided on the front side in the moving direction, and a coolant line connected to the outside is installed in the first inner space, and the external a moving mold having a steam supply port provided on one side of the side and an outlet for discharging the cooling water, steam and air from the inside on the other side of the outer side; and a frame shape having a second inner space, a concave core having a concave shape is provided on the front facing the convex core, a cooling water line connected to the outside is installed in the second inner space, a steam supply port is provided on one side of the outer surface, On the other side of the side, an outlet for discharging internal cooling water, steam and air is provided, and on the opposite side facing the concave core, a feeder for injecting air and mold material and an ejector for separating the molded product from the concave core are provided. and, between the rear ends of both sides of the moving mold, which are both ends of the cavity formed between the convex and concave cores, and the front ends of both sides of the fixed mold of the fixed mold, external air is supplied to the cavity. A separate external through hole for cooling the mold raw material is further provided, and at one side between the external through hole and the cavity, a leak preventing sill for preventing the mold raw material (foaming raw material) injected into the cavity from leaking into the external through hole is further provided Provided, the leak barrier protrudes a predetermined length from the front end of the concave core of the concave core toward the rear ends of both sides of the moving frame rather than the ends of both sides of the fixing frame, and from the rear end of the convex core of the convex core corresponding thereto in the direction of the leak barrier A first passage narrowing inducing protrusion is further provided to protrude and narrow the passage between the leak-proof sill and each other, and the central rear end of the moving mold and the fixed mold between the cavities are opposite to each other. On one side of the space between the central end portions, a mixing barrier is further provided to prevent the mold raw material (foaming raw material) injected into the cavity from being mixed and connected with each other and from occurring on the edge of the molded product, wherein the mixing barrier is the concave core tip of the concave core. a predetermined length protrudes in the direction of the rear end of the moving frame from the central front end of the fixed frame, and protrudes from the rear end of the convex core of the convex core corresponding thereto in the direction of the mixing threshold so that the passage between the mixing threshold and each other is narrowed. It is characterized in that the second passage narrowing inducing protrusion is further provided.

In addition, in the mold apparatus according to an embodiment of the present invention, the movable mold frame is a cavity between the convex and concave cores on one side of the convex core. Air injected together with the mold material (spherical solid foam raw material) A through hole may be further provided to communicate with the steam in the first internal space while being guided to the first internal space to be guided to the cavity.

In addition, in the mold apparatus according to an embodiment of the present invention, the movable mold is in a state in which the mold raw material in contact with the through hole is in close contact so that the steam can be directly supplied without leakage to the side. To this end, a concave portion may be provided on the surface of the convex core to allow the mold material to flow in, and the through hole may have a structure that is minutely penetrated through the bottom surface of the concave portion.

In addition, in the mold apparatus according to an embodiment of the present invention, the cooling water line of the movable mold is disposed close to the convex core, and an extension line having a spray nozzle to supply the cooling water to the convex core may be further provided. have.

Further, in the mold apparatus according to an embodiment of the present invention, the extension line has a structure that extends toward the rear surface of the front surface of the convex core, and the injection nozzle of the cooling water line of the fixed mold corresponding thereto is the extension It may have a structure that is sprayed toward the rear surface of the bottom surface of the concave core, which is on the same line as the line.

In addition, in the mold apparatus according to an embodiment of the present invention, the fixed mold frame is a cavity between the convex and concave cores on one side of the concave core, and the air injected together with the mold material is guided to the second inner space. At the same time, the steam in the second inner space may be further provided with a through hole communicating so as to be guided to the cavity.

In addition, in the mold apparatus according to an embodiment of the present invention, the fixed mold frame is configured to receive heat directly without leaking the steam to the side in a state in which the mold raw material in contact with the through hole is in close contact. For this, a concave portion may be provided on the surface of the concave core so that the mold material flows in, and the through hole may have a structure that is minutely penetrated through the bottom surface of the concave portion.

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In addition, in the mold apparatus according to an embodiment of the present invention, the movable mold and the fixed mold are further provided with an auxiliary outlet for allowing the air filled in the first and second inner spaces to leak to the outside. can

Further, in the mold apparatus according to an embodiment of the present invention, the outlet of the movable mold and the fixed mold may be disposed on one side of the bottom surface, and the auxiliary outlet corresponding thereto may be disposed on one side of the upper surface.

In addition, in the mold apparatus according to an embodiment of the present invention, the outlet and the auxiliary outlet of the movable mold and the fixed mold are automatically controlled so that the coolant, steam, and air in the first and second internal spaces can be discharged at the same time. it could be

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In the mold apparatus according to an embodiment of the present invention described above, a separate auxiliary outlet is provided on the opposite side of the outlet through which steam, cooling water, and air of the moving mold and the fixed mold are discharged to the outside, respectively, and the mold material is injected into the cavity. By allowing the air supplied together with the mold to be smoothly discharged to the outside, if the air inside the mold is not completely discharged to the outside through the outlet and remains, it prevents the mold raw material from being sufficiently filled and leads to defects in advance As a result, it is possible to improve work efficiency according to continuous work without occurrence of defects, as well as to improve product competitiveness.

1 is a perspective view showing a mold apparatus according to an embodiment of the present invention.
2 is an exploded perspective view showing a mold apparatus according to an embodiment of the present invention.
3 is an exploded perspective view of the mold apparatus according to an embodiment of the present invention viewed from the opposite side.
4 is a cross-sectional view showing a mold apparatus according to an embodiment of the present invention.

Hereinafter, as shown in FIGS. 1 to 4 , the mold apparatus according to an embodiment of the present invention includes a movable mold 10 and a stationary mold 20 .

The movable mold 10 has a frame shape having a first inner space 11 , a convex core 12 having a convex shape is provided on the front side in the moving direction, and a coolant line 13 connected to the outside in the first inner space 11 . ) is installed, a steam supply port 14 is provided on one side of the outer side, and a discharge port 15 for discharging the cooling water, steam and air inside on the other side of the outer side has a rectangular box structure.

In addition, the movable mold 10 has the air injected together with the mold raw material 7 into the cavity 5 between the convex and concave cores 12 and 22 over the entire outer surface of the convex core 12 . A through hole 12a communicating with the steam in the first inner space 11 while being guided to the first inner space 11 is provided to be guided to the cavity 5 .

In addition, the movable mold 10 has the convex core so that the steam can be directly supplied with heat without leaking to the side while the raw material 7 in contact with the through hole 12a is in close contact. A concave portion 12b concavely dented so that the mold raw material 7 is introduced into the entire outer surface of 12 is provided, and the through hole 12a is a plurality of finely penetrating the bottom surface of the concave portion 12b. consists of

In addition, the cooling water line 13 of the movable mold 10 is disposed close to the convex core 12, and an extension line 13b having a spray nozzle 13a to supply cooling water to the convex core 12. This is provided.

In addition, the extension line 13b has a structure extending toward the rear surface of the front surface of the convex core 12, and the injection nozzle 23a of the coolant line 23 of the fixed mold 20 corresponding thereto is It has a structure in which it is sprayed toward the rear surface of the bottom surface of the concave core 22 that is on the same line as the extension line 13b.

The stationary mold 20 has a frame shape having a second inner space 21 , a concave core 22 having a concave shape is provided on the front facing the convex core 12 , and is formed in the second inner space 21 . A cooling water line 23 connected to the outside is installed, a steam supply port 24 is provided on one side of the outer surface, and an outlet 25 for discharging the cooling water, steam and air inside is provided on the other side of the outer surface, and the concave core It has a rectangular box structure in which a feeder 26 for injecting air and raw material for a mold and an ejector 27 for releasing the molded product from the concave core 22 are provided on the opposite side facing the 22 from the inside.

Reference numeral 26a denotes a raw material supply nozzle to which a raw material is supplied, and 26b denotes an air nozzle 26b that supplies air to allow the raw material to be sucked into the cavity 5 .

And, the fixed mold 20 has the air injected together with the mold raw material 7 into the cavity 5 between the convex and concave cores 12 and 22 over the entire outer surface of the concave core 22. A through hole 22a communicating with the steam in the second inner space 21 while being guided to the second inner space 21 is provided to be guided to the cavity 5 .

In addition, the fixed mold 20 is provided with the mold material (foaming material) 7 in close contact with the through hole 22a so that the steam can be directly supplied without leaking to the side. To this end, a concave portion 22b is provided on the surface of the concave core 22 so that the mold raw material 7 is introduced, and the through hole 22a is minutely penetrated through the bottom surface of the concave portion 22b. It consists of a plurality of

And, both ends 10a of the movable mold 10, which are both ends of the cavity 5 formed between the convex and concave cores 12 and 22, and the both ends of the stationary mold 20 of the stationary mold 20 ( Between 20a), a separate external through-hole 9 is provided for cooling the mold material, which is penetrated to the outside and supplied to the cavity 5 with external air.

In addition, the movable mold 10 and the fixed mold 20 have auxiliary outlets 18 and 28 for allowing the air filled in the first and second inner spaces 11 and 21 to leak to the outside, respectively. is provided.

Here, the outlets 15 and 25 of the movable mold 10 and the fixed mold 20 are disposed on one side of the bottom to facilitate drainage of the cooling water, and the corresponding auxiliary outlets 18 and 28 are at the top It is preferable to be disposed on one side of the surface so that the discharge of air according to the discharge of the cooling water is not obstructed.

In addition, the outlets 15 and 25 and the auxiliary outlets 18 and 28 of the movable mold 10 and the stationary mold 20 are provided for cooling water, steam and air in the first and second internal spaces 11 and 21 . At the same time, it is preferable that the automatic control is performed so that it can be discharged smoothly.

And, on one side between the external through-hole 9 and the cavity 5, a leak preventing protrusion 22c for preventing the mold raw material 7 injected into the cavity 5 from leaking into the external through-hole 9 is provided. is provided.
To explain this in more detail, the leak preventing protrusion 22c protrudes a predetermined length from the concave core tip 22e of the concave core 22 toward the rear end 10a of both sides of the movable frame than the front end 20a of both sides of the fixed frame. The first passage is narrowed so that the passage between the convex core 12 and the leakage barrier 22c is narrowed by protruding from the convex core rear end 12c of the convex core 12 corresponding thereto. A trigger projection (12d) is further provided.

Then, on one side of the space between the front surfaces of the movable mold 10 and the stationary mold 20 facing each other between the cavities 5, the mold raw materials 7 injected into the cavity 5 are mixed and connected with each other while being connected to the molded product. A mixing barrier (22d) is provided to prevent the occurrence of jjaturi on the rim.
To explain this in more detail, the mixing barrier 22d protrudes a predetermined length from the concave core tip 22e of the concave core 22 in the direction of the central rear end 10b of the moving frame than the central front end 20b of the fixed frame. The second passage is narrowed by protruding from the rear end 12c of the convex core of the convex core 12 corresponding thereto in the direction of the mixing-preventing bump 22d to narrow the passage between the mixing-preventing bump 22d and each other. A trigger projection (12e) is further provided.

Unexplained reference numeral 19 denotes a cylinder rod for forming and separating the movable mold 10 with the fixed mold 20 while pushing and pulling.

An example of use of the mold apparatus according to an embodiment of the present invention according to this configuration is as follows.

First, the movable mold 10 is advanced forward so that the front convex core 12 is inserted into the concave core 22 of the stationary mold 20 .

At this time, a cavity 5 having a predetermined interval is formed between the convex and concave cores 12 and 22 .

Then, when air is injected at high pressure through the air nozzle 26b of the feeder 26, a suction force is generated, and the mold raw material (foaming raw material, 7) of the raw material supply nozzle 26a is introduced into the cavity 5. .

After the input of the mold raw material 7 is made to some extent in this way, the air injection is stopped and the input of the mold raw material 7 is stopped.

At this time, the air previously injected into the cavity 5 is passed through the through holes 12a and 22a of the concave portions 12b and 22b of the convex and concave cores 12 and 22, respectively, in the first and second internal spaces 11 and 21, respectively. ), the cavity 5 is filled with only the mold raw material 7 without air, and in addition, the mold raw material 7 is completely filled up to the recesses 12b and 22b.

Here, since the through holes 12a and 22a have a fine through hole structure, air passes through, while the mold raw material 7 does not pass due to factors such as surface tension and stays in the cavity 5 .

Then, high-temperature steam is injected into the first and second internal spaces 11 and 21 through the respective steam supply ports 14 and 24, and at this time, the high-temperature steam is directed to each of the concave portions 12b and 22b. After heat is applied to the filled mold raw material 7 to foam the mold raw material 7, a predetermined molding is completed.

Then, cooling water is injected through the cooling water lines 13 and 23 to move and cool the fixed molds 10 and 20 based on each of the convex and concave cores 12 and 22 .

Then, when the moving mold 10 is separated from the stationary mold 20 and returned to its original state, the molded product is pushed out through the ejector 27 to separate it from the stationary mold 20, the predetermined molding operation is completed. will be.

Here, the cooling water, steam gas, and air in the first and second internal spaces 11 and 21 are appropriately supplied through the separate controllers near the completion of the mold work through the outlets 15 and 25 and the auxiliary outlets 18 and 28. It automatically opens so that it can be discharged to the outside.

It is possible to continuously perform a predetermined mold operation while continuously repeating this series of processes.

As described above, in the mold apparatus according to an embodiment of the present invention, a separate auxiliary outlet is provided on the opposite side of the outlet through which steam, cooling water, and air of the moving mold and the fixed mold are discharged to the outside, and the mold raw material is injected into the cavity. By allowing the air supplied together with the mold to be smoothly discharged to the outside, if the air inside the mold is not completely discharged to the outside through the outlet and remains, it prevents the mold raw material from being sufficiently filled and leads to defects in advance As a result, it is possible to improve work efficiency through continuous work without defects, as well as to improve product competitiveness.

As described above, one embodiment of the present invention has been described, but based on this, those of ordinary skill in the art can add, change, The present invention may be variously modified and changed by deletion or addition, and this will also be included within the scope of the present invention.

5: Cavity 7: Mold raw material
9: External through hole 10: Moving mold
11: first inner space 12: convex core
12a: through hole 12b: recess
13: coolant line 13a: injection nozzle
13b: extension line 14: steam supply port
15: outlet 18: auxiliary outlet
19: cylinder rod 20: fixed mold
21: second inner space 22: concave core
22a: through hole 22b: recess
23: coolant line 33a: injection nozzle
24: steam supply port 25: exhaust port
26: feeder 27: ejector
28: auxiliary outlet

Claims (7)

It has a frame shape having a first inner space, and a convex core is provided on the front side in the moving direction, a cooling water line connected to the outside is installed in the first inner space, a steam supply port is provided on one side of the outer surface, and a steam supply port is provided on the other side of the outer surface. a movable mold having an outlet for discharging cooling water, steam, and air to the outside; and
A frame shape having a second inner space, a concave core having a concave shape is provided on the front facing the convex core, a cooling water line connected to the outside is installed in the second inner space, a steam supply port is provided on one side of the outer surface, and an outer surface a fixed mold frame provided with a discharge port for discharging internal cooling water, steam and air to the outside on the other side, and provided with a feeder for injecting air and mold material on the opposite side facing the concave core and an ejector for separating the molded product from the concave core;
including,
Between the rear ends of both sides of the movable mold, which are both ends of the cavity formed between the convex and concave cores, and the front ends of both sides of the fixed mold of the stationary mold, external air is passed through to the outside to cool the mold material supplied to the cavity. A separate external vent is provided for
At one side between the external through hole and the cavity, a leak preventing sill for preventing the mold raw material (foaming raw material) injected into the cavity from leaking into the external through hole is further provided,
The leak barrier protrudes a predetermined length from the front end of the concave core of the concave core in the direction of the rear ends of both sides of the moving frame rather than the front ends of both sides of the fixed frame, and protrudes from the rear end of the convex core of the convex core corresponding thereto in the direction of the leak barrier. A first passage narrowing causing protrusion is further provided so that the passage between the leak sump and each other is narrowed,
On one side of the space between the central rear end of the moving frame and the front end of the fixed frame facing each other of the moving mold and the fixed mold between the cavities, the mold raw material (foaming raw material) injected into the cavity is mixed with each other and connected to each other, and the molded product border is mixed with jittery. A mixing barrier is further provided to prevent
The mixing barrier protrudes a predetermined length from the front end of the concave core of the concave core in the direction of the rear end of the moving frame rather than the center end of the fixed frame. The mold apparatus, characterized in that the second passage narrowing inducement protrusion for narrowing the passage between the mixing sill and each other is further provided. According to claim 1,
The movable mold is configured such that the air injected together with the mold material is guided to the first inner space into the cavity between the convex and concave cores on one side of the convex core while the steam in the first inner space is guided to the cavity. Mold device, characterized in that the through-hole is further provided. 3. The method of claim 2,
The movable mold is concave so that the mold raw material is introduced into the surface of the convex core so that the steam can be directly supplied without leaking to the side while the mold raw material in contact with the through hole is in close contact. A mold apparatus, characterized in that a recessed portion is provided, and the through hole is finely penetrated through a bottom surface of the recessed portion. According to claim 1,
The cooling water line of the movable mold is disposed close to the convex core, and an extension line having a spray nozzle is further provided to supply the cooling water to the convex core. 5. The method of claim 4,
The extension line has a structure extending toward the rear surface of the front surface of the convex core, and a corresponding injection nozzle of the cooling water line of the fixed mold is injected toward the rear surface of the bottom surface of the concave core, which is on the same line as the extension line. A mold device, characterized in that it has a structure that becomes According to claim 1,
The fixed mold frame is configured such that the air injected together with the mold raw material into the cavity between the convex and concave cores on one side of the concave core is guided to the second inner space while the steam in the second inner space is guided to the cavity. Mold device, characterized in that the through-hole is further provided. According to claim 1,
The movable mold and the fixed mold are further provided with an auxiliary outlet for allowing the air filled in each of the first and second inner spaces to leak to the outside.

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