KR200335045Y1 - Press or Injetion Molding Apparatus for Complex Synthetic Mineral Resin Material - Google Patents

Abstract

The present invention relates to a mold for molding a composite resin product, and in particular, a synthetic resin powder state or binder containing solids such as natural minerals or powdered iron with a high specific gravity, and filled with synthetic resin, and the material by direct or indirect heating The present invention relates to a mold apparatus for forming a product by pressurizing in a molten state.

Conventionally, although the material used is resin and its viscosity is low in the molten state, the mold can be freely manufactured by injection molding method even though the thickness of the product is thin. There is a disadvantage that it is difficult to use due to the damage inside the mold because of poor filling in the flow and friction during flow.

The present invention forms the structure according to the desired shape of the internal shape, but the composite material is filled to a sufficient amount in consideration of the internal voids, and the molds are mutually bonded to each other by heating it from the outside to melt the enough to fill all the voids inside It can be pressurized to the same position as the original product by pressurizing each other in the made state, and it is economical by improving the durability, productivity and quality, and it is the press molding field by the up-down molding method than the vertical, horizontal molding, or composite molding. Can be used at

Description

Press or Injetion Molding Apparatus for Complex Synthetic Mineral Resin Material}

The present invention relates to a mold for molding a composite resin product, in particular, a polymerized powder and a binder containing a natural mineral or a solid such as powdered iron with a specific gravity, and mixed with each other using a synthetic resin as a binder. The present invention relates to a mold apparatus which is filled in and pressurized in a molten state of a material by direct or indirect heating and cooling to form a product by a synthetic mineral.

In the conventional case, the material used mostly consists of the resin itself, and since the viscosity was low in the molten state, it was possible to freely manufacture the product of the desired form by injection molding method, but the composite synthetic mineral containing synthetic mineral or metal powder, etc. In this case, even though the synthetic resin is contained as a part of the powder or binder in the molten state, even if it is melted, the viscosity is high. The damage is so severe that it is almost impossible to use the conventional mold as it is.

In addition, in the case of a mold used for injection molding a conventional general plastic product having a small thickness and a small amount of material used, even if the diameter of the inlet part of the passage where the filling is made into the inside of the mold is relatively small, It can be used, but if the product to be molded is thick and requires a relatively large amount of material, the filling time into the mold or the cooling time of the product will be relatively high. At the same time, the filling is difficult to be achieved at the same time, even if the filling is made, the time for the material to stay inside the screw cylinder is long, thereby causing various additional problems with unreasonable and reduced productivity.

In addition, in the case of the composite composite material to be utilized in the present invention, the gas is generated while these materials are in contact with the air inside the mold during the filling process into the mold, and these gases are smoothly discharged in a timely manner. If this is not done, the product remains in the space between the mold and the product during the molding process, the surface of the injection-molded product is a factor that deteriorates the quality of the molded product due to the increase in the fine irregularities like the shape.

In addition, when a mold is manufactured using a material of a mold generally used as in the prior art, a friction phenomenon caused by a synthetic composite material is severely generated, and the inner surface of the mold is worn down, thereby relatively reducing the service life of the mold and injecting the mold. When molding, a large amount of synthetic composite material is filled at the same time in the molten state at high temperature, and it is difficult to cope with the existing cooling system because of insufficient capacity, and it is difficult to cope with productivity. Many problems continue to occur, such as adversely affecting the quality of the product.

The present invention has been developed for the purpose of solving such a conventional problem.

The purpose of the present invention is to configure the internal structure of the mold to the desired shape, but to fill the material to suit the specific gravity or model of the desired product, and to form the heating plate inside the mold itself to directly heat or indirectly pass through Improve the productivity by improving the environment or functionally to make the compression molding at high pressure in the molten state by heating to improve the productivity, simple structure of the mold, easy durability and manufacturing process, composite composite It is intended to be effectively used in the technical field that compression molding is made of a resin material.

1 is an exploded perspective view showing a preferred example of the present invention,

Figure 2 is a longitudinal cross-sectional view of the assembled state of the present invention,

Figure 3 is a longitudinal sectional view showing another modification of the present invention.

<Explanation of symbols for the main parts of the drawings>

1: mold top and core, 2: mold middle,

3: mold lower plate core, 4: mold lower plate template,

5: hot plate, 6: electric trolley bar,

7: cable, 8: ejector plate,

9: ejector rod, 10: space block,

11: Ejector protection plate, 12: Upper and lower mold lock

In order to achieve the above object, the present invention can be divided into a mold top plate and a top core and a mold middle plate, and a lower die, respectively, and have a mold top plate and a top core mold, and a mold top plate and a top core core. The upper and upper core molds, the mold upper and lower core cores, and the lower and lower cores are also manufactured separately.The upper and lower cores are in contact with the core and the lower panel and the core are in contact with each other. When the product is compressed, a part of synthetic resin can be discharged so that the density of the product is made precisely, and the mold middle plate and the lower mold are combined and fixed to each other. To lower the mold when the product cools down. There is provided a mold apparatus having a structure to push up the lower mold core to take out the product.

Hereinafter, with reference to the accompanying drawings will be described in more detail with reference to a preferred embodiment of the present invention.

According to a preferred embodiment of the present invention, as illustrated in the accompanying drawings, in common, each of the upper mold and upper core (1) and the middle core (2), and the lower mold (3) each having a core therein and the mold The upper and upper cores (1) are manufactured separately, but the mold upper and upper cores (1) and the mold upper and upper cores (1) and the lower part of the core are also produced separately to contact the upper and lower cores, respectively. The structure and mold middle plate (2) and the lower die plate (4) are structured so that the density of the product can be made precisely by discharging a part of the synthetic resin when the material is melted and compressed at the lower contact portion of the lower plate and the core. In the case of fixing and compression molding by combining with each other, mold upper plate and upper core (1) are precisely spaced into the mold middle plate (2) plate to compress them, and when the product is cooled, The mold core has a structure in which the lower mold core 3 is pushed up by the ejector rod 9 to take out the product.

At this time, the structure of the mold is divided into mold top plate and top core (1), mold middle plate (2), lower mold (3), but when the product is completed, the inside of the mold can be easily removed to cool the product easily When the ejector is installed and the material is filled and closed inside the upper mold, both side ejector rods 9 of the middle plate are installed to retreat by the weight of the upper mold or a separate spring, and the ejector rod 9 inside the mold is also installed. At the same time, the ejector template (8), which has been retracted and pushed down to the floor according to the model of the product, and has been pushed down on the upper mold lid, naturally loses its center and protects the center ejector template (8) under the lower mold of the lower plate. Space block (10) to hold the erected on both sides, if necessary install a separate template at the bottom of the installation, and when the product is finished and cooled out later, the extruder first Open the shape plate and the top plate core (1), the lower mold (3) the mold itself slides forward or backward in the state that the extruder template is attached, and when the seat is directly seated on the ejector box, 9) Pushing the ejector rod hole of the die plate lower plate 4 raises the ejector plate 8, and the ejector rod 9 under the product pushes the lower mold 3 core lower plate to automatically The ejector rod 9 is configured to automatically return to the bottom of the product automatically to its original state again.

When the weighing weight is made immediately inside the taken-out mold and the material is filled inside the mold, the entire lower mold is moved to the upper plate to close the mold lid, and the upper plate is coupled downward so that the mold is directly or indirectly. It is configured to be compressed again when the material is heated and melted, and the direct cooling system is operated on the primary mold itself, or the product inside the mold is made to be single crystal by indirect cooling method.

At this time, as a technical configuration of directly heating the mold, for example, the mold upper plate and the upper plate core 1 of the mold are installed in a state in which the heating plate 5 in the form of a heater is inserted between the upper core portion and the upper plate mold plate. The lower mold (3) side is installed with a heater-type heating plate (5) inserted between the lower plate mold core and the lower plate mold plate (4), and the electric power source is installed with an electric trolley bar (6) outside. The electrical connection with each other can be made, the internal temperature or the external temperature of the mold is detected by the temperature sensing system 14 is configured to automatically set the temperature by the temperature control system 15. As a technical configuration of indirectly heating a mold, the mold may be passed through the inside of a heating device having a continuous furnace shape or a heating tunnel to melt the internal material of the mold.

As the material of the mold, the inner core is subjected to vacuum heat treatment, the surface of the mold is subjected to nitriding heat treatment, the outer model of the mold is composed of individual mold cores, and the inner mold core is made of mold mold according to the product model, and the lower mold core (4) is configured in the form of a strip bar to enable the up and down operation in the mold to facilitate the extraction of the product, the inner molds are manufactured to be formed in the form of a group of the combination of the main mold and deep mold It can be configured in the form.

After the material is melted in the mold and pressed for the second time (pressurization), the product itself expands due to the internal stress of the material, forming a hinge part on both sides of the lower mold to prepare for fear of pushing up the upper mold. Ear was made in the lower plate (4) was composed of a structure for fixing the upper and lower plates.

Of course, when the product is produced while the mold is moving, the cooling function of the mold is required. In this case, a cooling path is formed directly by forming a passage of the refrigerant inside the mold, and a separate cooling tunnel is used. It is also possible to adopt an indirect cooling method that cools the mold by allowing the mold to pass through the inside of the cooling device.

In case of adopting the direct or indirect heating means or product taking out device in relation to the mold, it is difficult to center the mold itself. Therefore, it is necessary to have a means for protecting the mold. As the mechanism, the mold space block 10 is provided on both sides of the mold, and the ejector rod 9 and the ejector plate 8 for discharging the product are installed in the center, and the ejector plate 8 can be abnormally moved. It is preferable to install the ejector rod 9 or the ejector mold plate 8 and the mold space blocks on both sides, and to attach the protective mold 11 to assist the mold again.

In addition, when the material is melted inside the mold and the temperature rises due to the stress of the material itself, in order to push up the upper mold by inflating the gas or resin, the mold is fixed to the upper and lower plates by making an ear in the lower mold lower plate. It is preferable to install the locking device 12.

Although every individual mold is variable as needed, it is generally desirable to base the thickness of the mold on a range of 1.5 to 5.0 cm based on the internal product.

In addition, in the case of a mold apparatus according to the present invention, as illustrated in FIG. 3, in the case of producing a product by injection molding, a valve gate or a gate 16 is formed on the upper plate and the upper core 1. It can be configured to be made, and to replace the mold top plate and the top plate core (1) that is built with spur and suppurbush so that the material can be injected can be configured to be used.

As reference numeral 13 denotes an ejector ejection rod hole.

In the case of the mold device according to the present invention, the operation is performed as follows.

It is divided into mold upper plate and upper plate core (1) and mold middle plate (2), lower mold core (3), lower mold plate (4), and ejector protection plate (11) with cores inside, respectively. In the case of adopting the mold upper plate and the upper core (1) the upper mold and the upper core is fixed, the hot plate (5) is inserted directly in the middle of the upper mold and the upper core and the mold upper plate and the upper core is assembled and fixed.

The mold middle plate 2 is fixed to the lower mold plate 4 and the lower mold core 3 is structured to move up and down, and the lower mold plate 4 and the lower mold core 3 to the lower side. The hot plate 5 is also directly inserted into the mold and fixed to the upper portion of the lower mold plate 4.

The lower mold core 3 must be in close contact with the lower mold plate 4 when the material is completely filled in the mold, so that the lower mold core 3 can be directly heated from the hot plate 5. These hot plates 5 are connected to the electric trolley 6 so that the mold can be continuously connected to an external power source.

Thus, the mold is moved by a mobile conveyor belt, and the temperature sensor and automatic temperature control system installed in the mold are operated. At this time, after the composite synthetic resin filled in the mold is melted and melted as described above, the composite material is subjected to compression molding, and after the compression molding is performed, the mold locking device 12 locks the mold to the cooling device immediately. When the feeding is made and the internal temperature of the mold is cooled to 80 ° C to 150 ° C by the cooling device, the clamping operation for fixing the mold to the right position is performed at the same time on the upper and lower sides and the lower side when the upper mold is opened. The mold is seated on the ejector box, which is the correct position for ejection.

Next, as the ejector device is operated, the injector rod is raised above the plate hole 3 and passes through the lower mold plate 12 to push up the lower mold ejector plate 8, and when the ejector plate 8 is raised, The ejector rod 9 pushes the mold lower core 3 upward through the mold lower mold plate 4. At this time, the product is automatically taken out and the filling of the composite material in which the composite material is quantitatively weighed in the mold is performed repeatedly to perform the above-described operation process.

As described above, in the case of the mold apparatus according to the present invention, the internal structure of the mold is configured as desired, but the material is filled in accordance with the specific gravity or model of the desired product and heated directly or indirectly to the mold to be heated under high pressure. Compression molding can be made and the cooling device and environment in the mold can be functionally improved to improve productivity, and the mold structure can be made simple and durable and the manufacturing process can be easily made. It can be preheated or heated or indirectly used to heat the mold by using a continuous furnace, and can be effectively used in the technical field where compression molding is made of synthetic composite material. Will have

Claims (8)

It is divided into mold top plate and top core (1), mold middle plate (2), and bottom mold each having core inside, and mold top plate and top core (1) mold plate and mold top plate and top core (1) core are manufactured. , The upper part of the mold and the upper core (1) and the lower core are also manufactured separately, and the upper and lower parts are in contact with the core and the lower part of the core, and the lower part of the core is in contact with the lower part. The structure that allows the part to be discharged so that the density of the product is made precisely and the mold middle plate (2) plate and the lower plate plate are fixed to each other and fixed and compressed. 2) Press the bottom mold core to eject the product by ejecting the lower mold core by the ejector rod when the product is cooled. Compression and injection molding apparatus for forming a composite synthetic resin material comprising the structure. The method of claim 1, The ejector is installed inside the mold, and both side ejector rods of the middle plate are installed to be retracted from the inside of the mold, and the space block 10 for protecting and centering the ejector template pushed down on the upper mold lid is provided on both sides. Stand up and install a separate template at the bottom, and when the ejector rod is pushed up to the ejector rod hole of the mold template, the ejector plate is raised and the ejector rod pushes the mold lower core 3 to The ejector rod is automatically ejected, and the ejected ejector rod is automatically configured to automatically return to its original state again. Compression and injection molding die apparatus for composite resin material. The method of claim 1, The heater-type heating plate is inserted between the upper core part of the mold and the upper plate mold plate, and the lower plate side is installed with the heater-type heating plate inserted between the lower part of the lower mold core and the lower plate plate, and the power supply is external. An apparatus for compression and injection molding of a composite synthetic resin material, comprising: an electric trolley bar installed in the electrical trough to establish electrical connection with each other, and having a temperature sensing system and an automatic temperature control system. The method of claim 1, The mold is a technical configuration in which the mold indirectly heats the mold, characterized in that it is configured to melt the internal material of the mold by passing the mold into the heating device having a continuous form for heating or in the form of a heating tunnel. Molding apparatus for compression and injection molding of synthetic resin materials. The method of claim 1, When the mold is heated and the internal synthetic resin is melted, an external pressure is applied immediately so that the second compression is performed, and the compressed material is selected from the composite synthetic resin material by which the material in the mold is selected by the cooling system or the indirect cooling system of the mold itself. Molding apparatus for compression and injection molding. The method of claim 1, As the material of the mold, the inner core is subjected to vacuum heat treatment, the surface portion of the mold is subjected to nitriding heat treatment, the outer model of the mold is composed of individual mold cores, and the inner mold core is made of mold cores according to the product model, and the lower mold. The core is composed of a strip bar shape that can be moved up and down inside the mold to facilitate the extraction of the product, and the manufactured internal molds can be formed in a group form to form a combination of a main mold and a dip mold. A mold apparatus for compression and injection molding of a composite synthetic resin material, characterized by the above-mentioned. The method of claim 1, Forming a hinge portion on both sides to the outside of the mold and making an ear in the lower mold lower plate to install a mold locking device for fixing the upper and lower plates, Space block is installed on both sides of the mold and the ejector rod and ejector plate for ejecting the product are installed at the center part so that the ejector plate can move up and down. Apparatus for compression and injection molding of a composite synthetic resin material, characterized in that it is formed by attaching an auxiliary mold plate at the bottom. The method of claim 1, In the case of producing a product by injection molding method, the upper plate and the upper core have a structure in which a valve gate or a gate can be formed, and a mold upper plate in which sprue and suppurbush are embedded so that the material can be injected. And a mold apparatus for compression and injection molding of a composite synthetic resin material, characterized in that the entire upper core and the top plate can be used.