KR101463077B1 - An apparartus for injection, compression, expansion molding and a method therefor - Google Patents

Abstract

The present invention relates to an injection molding machine comprising a compression cylinder as a space for temporarily storing a molten resin supplied from an injection machine, a drive mechanism for compressing resin in the compression cylinder, an injector side valve for controlling injection of resin supplied from the injection machine into the compression cylinder, And a mold side valve for controlling the compression of the resin in the compression cylinder into a cavity which is a space in which the injection molding is formed, wherein the compression cylinder is a molten resin holding space formed by being surrounded by the cylinder block and the compression piston, Wherein the driving mechanism includes the cylinder block and the compression piston, and compresses the resin in the compression cylinder by the relative movement of the compression piston and the cylinder block, the driving mechanism being driven by a clamping force of the injection machine The compression piston moves according to the movement of the mold module on the moving side. Wherein when the resin is injected from the injector, the injector-side valve is opened while the injector-side valve and the mold-side valve are both closed, the resin flows into the compression cylinder, and after the compression cylinder is filled, The valve is closed, the compression piston moves, the resin inside the compression cylinder is compressed, and the resin compressed in the compression cylinder is expanded and injected into the cavity by opening the mold side valve.
The present invention adopts a mold having a structure using a mold clamping force and using two valves, thereby making it possible to increase the compression ratio as compared with the case of using a valve pin, to have high flexibility in process operation, The present invention provides an injection compression / expansion molding apparatus and a molding method. Further, since the resin retention space can be increased in capacity, a sufficient injection amount can be provided even when the cavity is large.

Description

[0001] The present invention relates to an injection compression molding apparatus and an injection molding method using the same,

The present invention relates to an injection compression expansion molding apparatus and a molding method using the same. More specifically, the present invention relates to an injection compression expansion molding apparatus which compresses a resin in a compression cylinder by using a clamping force, drives a valve to implement expansion injection, and a molding method using such a method . In the injection compression expansion molding apparatus of the present invention, the mold side valve is closed, the injector side valve is opened, the resin is filled in the compression cylinder, the both side valves are closed, and then the movable side is moved to compress the resin in the compression cylinder After the compression, the mold side valve is opened to allow the resin to be injected into the cavity where the product is molded. When the pressure of the compression cylinder drops sufficiently, the injector side valve is also opened to transfer the packing pressure.

Injection molding is a series of circulating processes in which a polymer material is filled into a mold cavity by an appropriate method to produce a desired product. In short, it is a process that melts, sheds, and solidifies. That is, the solid-state plastic material is melted in the cylinder of the injection molding machine, and the molten material is filled into the cavity of the mold by using high pressure. At this time, since the mold serves as a kind of heat exchanger, the charged material is cooled and becomes a solid molded product having a desired shape.

On the other hand, an expansion injection molding is a technique of previously compressing a resin and filling the resin with a compressed force at a high speed. This is an injection method using the property that the molten resin which has been compressed and increased in density flows rapidly while expanding into a low pressure cavity, and is used when fast charging is required. The compression ratio means the ratio of the volume at the atmospheric pressure divided by the volume of the compressed state. In the expansion injection process, since the resin is injected at high speed through the expansion process in which the pressure is restored from the compressed state to the atmospheric pressure state, Do.

As a related art related thereto, Non-Patent Document 1 proposed in the following prior art document discloses a technique applied to an existing Engel injection machine under the name of X-Melt. This is a technique in which the resin is compressed with a screw while the valve on the mold side is closed, and then the valve is opened to expand it.

Non-Patent Document 2 discloses a method of changing the valve pin structure of a hot runner proposed by Vetter et al. This is a technique of deforming the valve pin in the hot runner to block the nozzle outlet, block the hot runner inlet, and compress the valve pin.

The technique disclosed in the non-patent document 1 is a technique which is difficult to apply to a general injection molding machine using a device connected to the injection molding machine itself, and the technique disclosed in the non-patent literature 2 is not suitable for application in a case where the cavity is large due to insufficient injection amount . In order to solve these problems, the present invention provides a mold and a molding method which can increase a compression ratio as compared with the existing technology by using a clamping force and use two valves and provide a sufficient and sufficient injection amount in terms of process operation .

 ENGEL Processing Department, X-Melt Expansion Melt Technology, Technical Information, Issue 05/23/2002.  Dietmar Drummer, Karoline Vetter, "Influence of Expansion Injection Molding (EIM) upon Part Properties," 44th CIRP Conference on Manufacturing Systems, May 31 - June 3, 2011, Madison, WI, USA.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a mold having a structure including two valves using mold clamping force, The present invention aims at providing a molding apparatus and a molding method which can increase the compression ratio as compared with the existing technology, have high flexibility in process operation, are versatile, and sufficiently provide an injection amount.

According to an aspect of the present invention, there is provided an injection molding machine including a compression cylinder as a space for temporarily storing a molten resin supplied from an injection machine, a drive mechanism for compressing the resin in the compression cylinder, Side valve for controlling injection of a resin compressed in the compression cylinder into a cavity which is a space in which an injection material is formed, the compression cylinder being surrounded by a cylinder block and a compression piston Wherein the driving mechanism includes the cylinder block and the compression piston and compresses the resin in the compression cylinder by the relative movement of the compression piston and the cylinder block, On the moving side of the mold module by the clamping force Wherein the injector-side valve is opened while the injector-side valve and the mold-side valve are both closed, and the resin flows into the compression cylinder when the resin is injected from the injector, The injector side valve is closed after the compression cylinder is filled, the compression piston is moved to compress the resin inside the compression cylinder, and the resin compressed in the compression cylinder is expanded by opening the mold side valve and expanding into the cavity Thereby providing a mold module to be injected.

According to the present invention, there is provided an injection molding machine comprising a compression cylinder as a space for temporarily storing a molten resin supplied from an injection machine, a drive mechanism for compressing the resin in the compression cylinder, And a mold side valve for controlling the compression of the resin in the compression cylinder into a cavity which is a space in which the injection molding is formed, the compression cylinder including a molten resin reservoir space surrounded by a cylinder block and a compression piston, A nozzle tip provided with the injector side valve and installed adjacent to the cylinder block, a nozzle tip provided with the mold side valve, which is disposed adjacent to the compression piston, and a resin supplied from the injector, , A primary sprue which is a passage through which the resin And a secondary sprue which is a passage for moving to the cavity, wherein the primary sprue is formed by a passage connecting the nozzle locator and the inside of the cylinder block, the secondary sprue being connected to the compression piston Wherein the driving mechanism includes the cylinder block and the compression piston and compresses the resin in the compression cylinder by the relative movement of the compression piston and the cylinder block And the resin compressed in the compression cylinder in the state where both the injector side valve and the mold side valve are closed is expanded and injected into the cavity by opening the mold side valve.

In addition, the present invention provides an injection compression expansion molding apparatus including a mold module described in [0009] and an injection machine for supplying resin to the mold module.
According to another aspect of the present invention, there is provided an injection compression / expansion molding method using a mold module and an injection device on which the mold module is mounted, the method comprising: a first step of moving the movable side of the mold module to close the mold module; A second step of injecting the resin from the injector into the compression cylinder, a third step of compressing the resin in the compression cylinder by a clamping force of the injector, a third step of injecting the resin into the cavity by the pressure of the compressed resin And an injection compression expansion molding method including the fourth step.

The present invention adopts a mold having a structure using a mold clamping force and using two valves, thereby making it possible to increase a compression ratio as compared with the case of using a valve pin, to have high flexibility in process operation, The present invention provides an injection compression / expansion molding apparatus and a molding method. Further, since the resin retention space can be increased in capacity, a sufficient injection amount can be provided even when the cavity is large.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the structure of an injection compression / expansion mold module of the present invention; FIG.
2 is a view for explaining the concept of an injection compression expansion molding process of the present invention.
3 is a block diagram of an injection compression / expansion molding apparatus according to the present invention.
4 is a view for explaining a mold module of an injection compression / compression molding apparatus according to an embodiment of the present invention.
Fig. 5 is a view for explaining another part of the mold module similar to Fig. 4; Fig.
6 is a view for explaining resin inflow in a mold module of an injection compression / compression molding apparatus according to an embodiment of the present invention.
7 is a view for explaining resin compression in a mold module of an injection compression / expansion molding apparatus according to an embodiment of the present invention;
8 is a view for explaining inflation injection in a mold module of an injection compression / expansion molding apparatus according to an embodiment of the present invention.
9 is a view for explaining transfer of a holding pressure in a mold module of an injection compression / expansion molding apparatus according to an embodiment of the present invention.
10 is a view for explaining the mold of a mold and the taking-out of a mold in a mold module of an injection compression / compression molding apparatus according to an embodiment of the present invention.
11 is a schematic view for explaining an injection compression / expansion molding apparatus according to the present invention.
12 is a view for simply explaining a configuration of an injection molding machine.
13 is a flowchart of an injection compression expansion molding method according to an embodiment of the present invention.

The present invention is applied to a polymer resin (hereinafter referred to as " resin ").

The injection compression expansion molding process of the present invention basically consists of three steps of injection, compression and expansion, and performs temperature control and valve control at each step. The present invention utilizes a clamping force and controls the opening and closing of the valve by using two valves to inject the resin and to compress the resin by performing expansion injection and packing pressure, A series of processes are carried out.

FIG. 1 is a view showing a schematic structure of an injection compression / expansion mold module of the present invention, and FIG. 2 is a view for explaining the concept of an injection compression expansion molding process of the present invention. Referring to FIGS. 1 and 2, the present invention includes a nozzle locator, a cylinder block, a compression piston, and a nozzle tip surrounding a passage through which a resin is injected and flows. The nozzle locator and the nozzle tip are respectively provided with an injection- Respectively. In the injection compression expansion molding process of the present invention, resin is introduced into the compression cylinder through the nozzle locator while the injector-side valve is opened in the state where both the injector-side valve and the mold-side valve are closed. When filling the compression cylinder, check the pressure sensor and fill the inside with the proper volume. Next, the injector side valve is closed and the resin inside the compression cylinder is compressed by the compression piston. When the mold side valve is opened in the compressed state, the compressed resin expands and is expanded and injected into the cavity, which is a space in which the product is molded. Then, when the pressure of the compression cylinder drops below a certain level, the injection valve is opened to transfer the packing pressure, thereby completing the expansion and injection into the cavity.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 3 is a block diagram of an injection compression / expansion molding apparatus according to the present invention, FIG. 4 is a view for explaining a mold module of an injection compression / expansion molding apparatus according to an embodiment of the present invention, Fig. 8 is a view for explaining another part of the mold module. Fig. FIGS. 6 to 9 are views for explaining resin inflow, resin compression, expansion injection, and holding pressure transfer in a mold module of an injection compression / expansion molding apparatus according to an embodiment of the present invention. Fig. 8 is a view for explaining the mold of the mold and the take-out of the mold in the mold module of the injection compression /

3, the injection compression / expansion apparatus according to the present invention includes an injector 110 to which a mold module 100 is mounted and supplies resin to the mold module 100, a temperature sensor and a heater, a pressure sensor and a valve, A mold module 100 including a driving mechanism, and a controller 120 for controlling the temperature of the resin and controlling the opening and closing of the valve.

4 to 10, the mold module 100 of the present invention includes a compression cylinder (24 in FIG. 5) as a space for temporarily storing the molten resin supplied from the injector 110, a resin in the compression cylinder 24 (28 in Fig. 5) that controls the resin fed from the injector 110 to enter the compression cylinder 24, the resin compressed in the compression cylinder 24 is injected into the compression cylinder 24 (30 in Fig. 5) that controls the entrance of the cavity into the cavity (34 in Fig. 5). The compression cylinder 24 is a molten resin holding space formed by being surrounded by a cylinder block (4 in FIG. 4) and a compression piston (6 in FIG. 4), and the driving mechanism is a cylinder block 4 and a compression piston 6 , And compresses the resin in the compression cylinder (24) by the relative movement of the compression piston (6) and the cylinder block (4). The driving mechanism is driven in accordance with the movement of the mold module 100 by the clamping force of the injector 110 to compress the resin. Specifically, the driving mechanism moves the compression piston 6 according to the movement of the mold module 100 by the clamping force of the injector 110 to compress the resin.

In the mold module 100 of the present invention, the resin compressed in the compression cylinder 24 is inflated and expanded into the cavity 34 by opening the mold side valve 30. In the injection compression and expansion process according to the present invention, when the resin is injected from the injector 110, the injector-side valve 28 is opened with the injector-side valve 28 and the mold- The resin is introduced into the compression cylinder 24 and the injection cylinder valve 28 is closed after the compression cylinder 24 is filled and the compression piston 6 is moved to compress the resin inside the compression cylinder 24, The resin compressed in the cylinder 24 is expanded and injected into the cavity 34 when the mold side valve 30 is opened and expanded so that the pressure of the compression cylinder 24 falls below a certain level, And the packing pressure is transmitted.

The mold module 100 according to the present invention includes a pressure sensor (35 in Fig. 5) for measuring the pressure in the compression cylinder 24, a hydraulic pressure controller (not shown) for independently driving the injector valve 28 and the mold valve 30, Side valve 28 and the mold side valve 30 by the hydraulic devices 31 and 32 in accordance with the pressure measured by the pressure sensor 35 and closing are controlled. The pressure sensor 35 is a load cell 35 provided outside the mold module 100 and the load cell 35 is connected to the load cell 35 to indirectly transmit the pressure of the resin in the compression cylinder 24 The pressure in the compression cylinder 24 is measured using a pressure transmission pin (25 in Fig. 5).

The mold module 100 of the present invention is provided with a nozzle locator (2 of FIG. 4) and a mold side valve 30 provided with an injector-side valve 28 and installed adjacent to the cylinder block 4, 5), which is a passage through which the resin supplied from the injector 110 moves to the compression cylinder 24, the compression cylinder 24, (29 in Fig. 5), which is a passage through which the resin compressed in the cylinder block 4 moves to the cavity 34, and the primary sprue 27 is connected to the inside of the cylinder block 4 And the secondary sprue 29 is formed as a passage through which the compression piston 6 and the nozzle tip 7 are inserted and connected.

The mold module 100 of the present invention further includes a temperature sensor and a heater for controlling the temperature of the resin, wherein the temperature sensor includes a thermocouple sensor and is installed at a plurality of points where temperature measurement is required, The cylinder block, the compression piston, and the heater (23, 26 in FIG. 5) installed to surround the nozzle tip.

The mold module 100 of the present invention is a mold module in which the resin is fastened to a fixed side mold of the injector 110 by a gate (gate 33 in FIG. 5) which is an inlet to be injected into the cavity 34 through the secondary sprue 29, A top clamping plate (1 in Fig. 4) for fixing the mold module 100, a top compression plate (see Fig. 4) provided adjacent to the top clamping plate 1 and fixed to the cylinder block 4, 3), a bottom compression plate (5 in Fig. 4) on which the compression piston 6 is mounted, a cavity plate The cavity plate 8 is engaged with the cavity plate 8 to form a closed state of the mold module 100 and separated from the cavity plate 8 to form an open state of the mold module 100, A core plate (10 in FIG. 4) for forming a parting line (PL) divided into a fixed side and a movable side when the mold module 100 is opened, a mold plate A parting lock pin (9 in FIG. 4) serving as a pin to keep the cavity plate 8 and the core plate 10 engaged with each other, an ejector plate , A return pin (11 in FIG. 4) that is a pin for helping the bib plate 12 return to its original position after the injection material is taken out, and a movable pin The mold plate 10 and the bottom clamping plate 13 as shown in Fig. 4, the upper compression plate 3, the lower compression plate 5, the cavity plate 8 and the core plate 10, A puller bolt (16 in Fig. 4) for controlling the opening of the lower compression plate 5 and an upper compression plate 3 connected to the puller bolt 16 to adjust the interval between the lower compression plate 5 and the upper compression plate 3, a sprue lock pin (22 in FIG. 4), which serves as a pin to help prevent the injection molding from being stuck to the fixed side when the mold module 100 is opened, And also, a cavity 34 is formed Extrusions space formed is surrounded by a cavity plate (8) and core plate (10). The mold module 100 according to the present invention includes a support pillar 14 (shown in Fig. 4) for guiding the force exerted by the core plate 10 during take-out so that the take- A lower compression plate 5 and a cavity plate 8 which support the lower compression plate 5 and the cavity plate 8 and which guide the positions of the upper compression plate 3, the lower compression plate 5 and the cavity plate 8 A support pin (17 in FIG. 4) and a support guide bush (18 in FIG. 4), a cavity plate (8), and a core plate (10) A guide bush (19 in Fig. 4), and a guide pin (20 in Fig. 4).

FIG. 11 is a schematic view for explaining an injection compression / expansion molding apparatus according to the present invention, and FIG. 12 is a view for simply explaining a configuration of an injection molding machine.

3 to 12, an injection compression and molding apparatus according to the present invention includes an injection machine 110 to which a mold module 100 is mounted and supplies resin to the mold module 100, A driving mechanism for compressing the resin in the compression cylinder 24; an injection mechanism for controlling the injection of the resin supplied from the injection machine 110 into the compression cylinder 24; A valve 28, and a mold-side valve 30 that controls the compression of the resin in the compression cylinder 24 into the cavity 34, which is a space in which the injection molding is formed. The compression cylinder 24 is a molten resin holding space formed by being surrounded by the cylinder block 4 and the compression piston 6. The drive mechanism includes the cylinder block 4 and the compression piston 6, 6) and the cylinder block (4), thereby compressing the resin in the compression cylinder (6). The driving mechanism is driven in accordance with the movement of the mold module 100 by the clamping force of the injector 110 to compress the resin. Specifically, the driving mechanism moves the compression piston 6 according to the movement of the mold module 100 by the clamping force of the injector 110 to compress the resin.

In the mold module 100 of the injection compression / expansion apparatus of the present invention, the resin compressed in the compression cylinder 24 is expanded and injected into the cavity 34 as the mold side valve 30 is opened and expanded. In the injection compression and expansion process of the injection compression and expansion apparatus according to the present invention, when the resin is injected from the injector 110, the injector side valve 28 and the mold side valve 30 are closed, The valve 28 is opened so that the resin flows into the compression cylinder 24 and the injection valve 28 is closed after the compression cylinder 24 is filled and the compression piston 6 is moved to the inside of the compression cylinder 24 The resin is compressed and the resin compressed in the compression cylinder 24 is expanded and injected into the cavity 34 when the mold side valve 30 is opened and expanded and the pressure of the compression cylinder 24 falls below a certain level, The side valve 28 is opened and the packing pressure is transmitted.

The mold module 100 of the injection compression expansion molding apparatus of the present invention includes a temperature sensor and a heater for controlling the temperature of the resin, a pressure sensor 35 for measuring the pressure in the compression cylinder 24, an injector- Side valve (28, 31) by hydraulic devices (31, 32) in accordance with the pressure measured by the pressure sensor (35) And the opening and closing of the mold side valve 30 are controlled. The injection compression expansion molding apparatus of the present invention controls the temperature of the resin by using the temperature sensor and the heater and controls the opening and closing of the valve by using the pressure sensor 35 and the hydraulic devices 31 and 32. [ The injector 110 includes a hopper which is an inlet through which resin is supplied to the injector 110 and an injector nozzle which is an outlet through which the resin is supplied to the mold module 100, A speed controller for controlling the speed of the driving unit, a control unit for controlling the speed of the driving unit, a control unit for controlling the speed of the driving unit, And an injector control panel for setting and controlling the injection speed and temperature of the resin, and operating the speed control means and the injector band heater under the control of the injector control panel, Through the grizzly and controls the injection speed and the temperature of the resin supplied to the mold module 100. The temperature control or valve control performed by the controller 120 described above may be performed using extra channels of the injector control panel.

13 is a flowchart of an injection compression expansion molding method according to an embodiment of the present invention. 13, the injection compression expansion molding method using the injection device 110 in which the mold module 100 and the mold module 100 are mounted according to the present invention moves on the movable side of the mold module 100, 13), the second step (S2 in Fig. 13, see Fig. 6) in which the resin is injected from the injector 110 into the compression cylinder 6, the mold clamping force of the injector 110 a third step (S3 in FIG. 13, see FIG. 7) of compressing the resin in the compression cylinder 24 with a clamping force and a fourth step in which the resin is inflated and injected into the cavity 34 by the pressure of the compressed resin S4 of Fig. 8, see Fig. 8). In addition, the injection compression expansion molding method of the present invention is characterized in that after the fourth step, the fifth step (S5 in FIG. 13, see FIG. 9) of transferring the packing pressure, the cooling and solidification And a sixth step (S6 in Fig. 13, see Fig. 10) of releasing the mold. The compression cylinder (24) of the mold module (100) is a molten resin holding space formed by being surrounded by the cylinder block (4) and the compression piston (6).

In the second step (S2, Fig. 6), the injector-side valve 28 is opened with the injector-side valve 28 and the mold-side valve 30 closed, the resin flows into the compression cylinder 24, After the cylinder 24 is filled, the injector-side valve 28 is closed.

The third step S3 (FIG. 7) is a step of moving the compression cylinder 24 by the relative movement of the compression piston 6 and the cylinder block 4 in a state in which both the injector-side valve 28 and the mold- Thereby compressing the resin.

In the fourth step (S4, FIG. 8), the resin compressed in the compression cylinder 24 is expanded and injected into the cavity 34 as the mold side valve 30 is opened and expanded.

9), when the pressure of the compression cylinder 24 drops below a predetermined level, the injector-side valve 28 is opened and the packing pressure is transmitted.

1: Top Clamping Plate
2: Nozzle Locator
3: Top Compression Plate
4: Cylinder block
5: Bottom Compression Plate
6: Compression piston
7: Nozzle Tip
8: Cavity plate
9: Parting Lock Pin
10: Core plate
11: Return Pin
12: Ejector Plate
13: Bottom Clamping Plate
14: Support Pillar
15: Ejector Guide Bush
16: Puller Bolt
17: Support Pin
18: Support Guide Bush
19: Guide Bush
20: Guide Pin
21: Spacer ring (Washer)
22: Sprue Lock Pin
23: Heater
24: Compression cylinder
25: Pressure Transfer Pin
26: Heater
27: 1st Sprue
28: Injector side valve (Valve)
29: 2nd Sprue
30: Mold-side valve (Valve)
31: Hydraulic device
32: Hydraulic device
33: Gate
34: Cavity
35: Load cell
PL: When the mold module is opened, the parting line divided into the fixed side and the movable side,
100: mold module
110: Injection machine
120:

Claims (26)

delete delete delete A compression cylinder which is a space for temporarily storing the molten resin supplied from the extruder;
A drive mechanism for compressing the resin in the compression cylinder;
An injector-side valve for controlling injection of the resin supplied from the injector into the compression cylinder;
A mold side valve for controlling the compression of the resin in the compression cylinder into a cavity which is a space in which the injection molding is formed;
Lt; / RTI >
Wherein the compression cylinder is a molten resin holding space formed by being surrounded by a cylinder block and a compression piston,
Wherein the drive mechanism includes the cylinder block and the compression piston, compresses the resin in the compression cylinder by the relative movement of the compression piston and the cylinder block,
Wherein the driving mechanism moves the compression piston in accordance with movement of the mold module on the movable side by the clamping force of the injector to compress the resin,
Side valve is closed while the injector-side valve and the mold-side valve are both closed, the resin flows into the compression cylinder, the injection-side valve is closed after the compression cylinder is filled,
The compression piston moves and the resin inside the compression cylinder is compressed,
Wherein the resin compressed in the compression cylinder is expanded and injected into the cavity by opening the mold side valve. delete 5. The method of claim 4,
Wherein when the pressure of the compression cylinder drops below a certain level, the injector-side valve is opened and packing pressure is transmitted. 5. The method of claim 4,
A pressure sensor for measuring a pressure in the compression cylinder;
A hydraulic device that independently drives the injector-side valve and the mold-side valve;
Further comprising:
Wherein the opening and closing of the injector side valve and the mold side valve are controlled by the hydraulic device according to the pressure measured by the pressure sensor. 8. The method of claim 7,
The pressure sensor is a load cell installed outside the mold module,
In the load cell,
Wherein the pressure in the compression cylinder is measured using a pressure transmission pin connected to the load cell and indirectly transmitting the pressure of the resin in the compression cylinder. A compression cylinder which is a space for temporarily storing the molten resin supplied from the extruder;
A drive mechanism for compressing the resin in the compression cylinder;
An injector-side valve for controlling injection of the resin supplied from the injector into the compression cylinder;
A mold side valve for controlling the compression of the resin in the compression cylinder into a cavity which is a space in which the injection molding is formed;
Wherein the compression cylinder is a molten resin holding space formed by being surrounded by a cylinder block and a compression piston,
A nozzle locator provided with the injector-side valve and installed adjacent to the cylinder block;
A nozzle tip provided with the mold side valve and installed adjacent to the compression piston;
A primary sprue which is a passage through which the resin supplied from the injector moves to the compression cylinder;
A secondary sprue which is a passage through which the resin compressed in the compression cylinder moves to the cavity;
Lt; / RTI >
Wherein the primary sprue is formed as a passage through which the nozzle locator and the cylinder block are connected to each other and the secondary sprue is formed as a passage through the compression piston and the nozzle tip,
Wherein the drive mechanism includes the cylinder block and the compression piston, compresses the resin in the compression cylinder by the relative movement of the compression piston and the cylinder block,
Wherein the resin compressed in the compression cylinder in the state where both the injector side valve and the mold side valve are closed is expanded and injected into the cavity by opening the mold side valve. 10. The method of claim 9,
Further comprising a heater and a temperature sensor for controlling the temperature of the resin,
Wherein the temperature sensor includes a thermocouple sensor and is installed at a plurality of points where temperature measurement is required,
Wherein the heater includes a nozzle locator having a passage through which the resin moves, a cylinder block, a compression piston, and a heater surrounding the nozzle tip. 10. The method of claim 9,
A gate which is an inlet through which the resin is injected into the cavity through the secondary sprue;
A top clamping plate for fastening the mold module to the fixed side mold plate of the injector;
A top compression plate installed adjacent to the upper fixing plate and to which the cylinder block is fixed;
A bottom compression plate on which the compression piston is mounted;
A cavity plate installed adjacent to the lower compression plate and to which the nozzle tip is mounted;
A cavity plate which is engaged with the cavity plate to form a closed state of the mold module and which is separated from the cavity plate to form an open state of the mold module and which is divided into a fixed side and a movable side when the mold module is opened together with the cavity plate, A core plate forming a parting line (PL);
A parting lock pin which serves to keep the cavity plate and the core plate engaged when the mold module is closed;
An ejector plate to help eject the ejection;
A return pin which is a pin for helping the bobbin to return to its original position after the bobbin is taken out;
A bottom clamping plate coupled to the movable side mold plate of the injector to fix the mold module;
A puller bolt for connecting the upper compression plate, the lower compression plate, the cavity plate, and the core plate to each other to control the opening of the mold module;
An interval adjusting ring connected to the puller bolt to adjust an interval between the lower compression plate and the upper compression plate;
A sprue lock pin which functions to prevent the injection molding from being stuck to the fixed side when the mold module is opened;
Further comprising:
Wherein the cavity is an injection molding forming space formed by being surrounded by the cavity plate and the core plate. delete delete delete An injector to which the mold module is mounted and supplies the resin to the mold module;
A compression cylinder which is a space for temporarily storing the molten resin supplied from the injection machine, a drive mechanism for compressing the resin in the compression cylinder, an injector-side valve for controlling the resin supplied from the injection machine to enter the compression cylinder, A mold unit including a mold side valve for controlling injection of a compressed resin into a cavity which is a space in which an injection material is formed;
Wherein the compression cylinder is a molten resin holding space formed by being surrounded by a cylinder block and a compression piston,
Wherein the drive mechanism includes the cylinder block and the compression piston, compresses the resin in the compression cylinder by the relative movement of the compression piston and the cylinder block,
Wherein the driving mechanism moves the compression piston in accordance with movement of the mold module on the movable side by a clamping force of the injector to compress the resin,
Side valve is closed while the injector-side valve and the mold-side valve are both closed, the resin flows into the compression cylinder, the injection-side valve is closed after the compression cylinder is filled,
The compression piston moves and the resin inside the compression cylinder is compressed,
Wherein the resin compressed in the compression cylinder is inflated and expanded and injected into the cavity by opening the mold side valve. delete 16. The method of claim 15,
Wherein when the pressure of the compression cylinder drops below a predetermined level, the injector-side valve is opened to transfer packing pressure. 16. The method of claim 15,
The mold module includes:
A temperature sensor and a heater for controlling the temperature of the resin;
A pressure sensor for measuring a pressure in the compression cylinder;
A hydraulic device that independently drives the injector-side valve and the mold-side valve;
Further comprising:
Wherein the opening and closing of the injector side valve and the mold side valve are controlled by the hydraulic device according to the pressure measured by the pressure sensor. 19. The method of claim 18,
Further comprising a control unit for controlling the temperature of the resin by using the temperature sensor and the heater and for controlling the opening and closing of the valve by using the pressure sensor and the hydraulic device,
The injector
A barrel including a hopper which is an inlet through which the resin is fed to the injection machine and an injection nozzle which is an outlet for feeding the resin into the mold module,
An injector band heater for surrounding the barrel and controlling the temperature;
A screw installed in the barrel and rotated;
A drive unit for rotating the screw;
Speed control means for controlling a speed of the drive unit;
An injector control panel for setting and controlling the injection speed and temperature of the resin;
/ RTI >
Under the control of the injector control panel, the speed control means and the injector band heater
To control the injection speed and temperature of the resin supplied to the mold module through the injector nozzle. 20. The method of claim 19,
The temperature control or valve control performed by the control unit
Wherein the injection compression expansion molding device is operable using extra channels of the injector control panel. 10. An injection compression expansion molding method using the mold module of claim 4 or 9 and an injection machine to which the mold module is mounted,
Moving the movable side of the mold module to close the mold module;
A second step of injecting resin into the compression cylinder from the injector;
A third step of compressing the resin in the compression cylinder by a clamping force of the injector;
A fourth step in which the resin is inflated and injected into the cavity by the pressure of the compressed resin;
Wherein the injection compression expansion molding method comprises: 22. The method of claim 21,
After the fourth step,
A fifth step of transferring packing pressure;
A sixth step of completing the cooling and solidification of the cavity inner mold and releasing the mold;
Further comprising an injection compression molding step. 22. The method of claim 21,
Wherein the third step compresses the resin in the compression cylinder by the relative movement of the compression piston and the cylinder block in a state in which both the injector side valve and the mold side valve are closed. 22. The method of claim 21,
Wherein the injector-side valve is opened when the injector-side valve and the mold-side valve are both opened, the resin is introduced into the compression cylinder, and the injector-side valve is closed after the compression cylinder is filled, Molding method. 22. The method of claim 21,
Wherein the resin compressed in the compression cylinder is inflated and expanded and injected into the cavity by opening the mold side valve. 23. The method of claim 22,
Wherein the injector-side valve is opened when a pressure of the compression cylinder drops below a predetermined level to transfer a packing pressure.

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