KR20060024471A - Compulsive feeder and plastic injection molding apparatus using this - Google Patents

Abstract

The present invention relates to a forced raw material feeder and a plastic injection molding apparatus using the same, and more particularly, it is possible to perform injection molding of plastic concrete, which has better strength and lifespan than ordinary cement concrete, and can be recycled. The present invention relates to a raw material forced feeder and a plastic injection molding apparatus using the same, by easily installing a hopper and forcibly supplying a raw material, such that a raw material which maintains nearly solid properties even when heated to a high temperature like the plastic concrete can be easily injection molded.

In the present invention, the inlet (120b) is formed so as to receive the raw material on the upper side and the nozzle 120a is provided on the front side and the raw material supplied from the inlet (120b) is injected through the nozzle (120a) Injection part 101 having an injection tube 120 is installed so that the injection screw 122 and the mold portion having a mold 170 so that the raw material injected through the nozzle 120a can be molded in a predetermined shape In the plastic injection molding apparatus comprising a 102, the inlet (120b) is characterized in that made by installing a hopper 131 so as to force the raw material supplied into the injection pipe 120.

Plastic injection molding machine, raw material feeder, screw, nozzle, hopper

Description

Compulsive feeder and plastic injection molding apparatus using this

1 is a schematic view showing a conventional injection molding apparatus,

2 is a schematic view showing another conventional injection molding apparatus;

3 is an overall plan view showing a plastic injection molding apparatus according to the present invention;

4 is a perspective view showing a plastic injection molding apparatus according to the present invention,

5 is a front view showing a plastic injection molding apparatus according to the present invention,

Figure 6 is an exploded perspective view showing the components of the injection portion in the plastic injection molding apparatus according to the present invention,

7 is a view showing a hopper hopper as a raw material forced feeder in the plastic injection molding apparatus according to the present invention,

8A is a front view showing a state in which a moving block is backward in a plastic injection molding apparatus according to the present invention;

8B is a front view showing a state in which the moving block is advanced in the plastic injection molding apparatus according to the present invention;

9 is a partially enlarged perspective view showing a mold in the plastic injection molding apparatus according to the present invention.

<Description of Signs of Major Parts of Drawings>

100: injection molding apparatus 101: injection unit

102: mold 105: base frame

110: supply pipe 111,121,135: heater

112: transfer screw 113,127: motor

114,126: reduction gearbox 115: belt

116: frame

120: injection pipe 120a: nozzle

120b: inlet 122: injection screw

122a: topitle 123: injection means

124: fixed block 125,145: guide shaft

128,132a, 133a, 180: cylinder

130: raw material feeder 131: Y-hopper

132: long axis case 133: short axis case

134: Hopper Plate

140: front block 141: hydraulic means

142: hydraulic cylinder for forward 143: hydraulic cylinder for reverse

144: oil tank

150: rear block 151: through hole

160: moving block 161: slide

170: mold 171: first mold

172: second mold 173: protrusion

174: groove portion 175: hole forming block

176: pin 177: hose

190: raw material supply means 191: raw material feeder

191a: hopper 191b: first feed material screw

192: compounding machine 192a: second feed material screw

193: drafting machine

The present invention relates to a forced raw material feeder and a plastic injection molding apparatus using the same, and more particularly, it is possible to perform injection molding of plastic concrete, which has better strength and lifespan than ordinary cement concrete, and can be recycled. The present invention relates to a raw material forced feeder and a plastic injection molding apparatus using the same, by easily installing a hopper and forcibly supplying a raw material, such that a raw material which maintains nearly solid properties even when heated to a high temperature like the plastic concrete can be easily injection molded.

       The injection molding apparatus is a device for molding synthetic resin into various forms. The molten resin is injected at a high pressure while the mold is closed to fill the space in the mold, and then cooled and solidified. Then, the mold is opened and the molded product is taken out. Synthetic resin used in this case is a raw material having a small injection pressure or a measuring pressure, and includes polyethylene (PE), polypropylene (PP), and polystyrene (PS), and requires a high injection pressure or a measuring pressure. Furnaces use engineering plastics such as polycarbonate (PC), acrylic, polyurethane (PU), etc., and most of them are for special applications.

As such, the injection molding apparatus is a process of taking out a product when the molten resin is injected in a state in which the mold is advanced, cooled by a cooling apparatus, molded into a solid material, and then the mold is retracted. In order to transmit the electrical signal to the hydraulic device to control the direction of movement, speed and force to the mechanical device to operate the sequence by the electrical sequence control.

Injection molding apparatuses that operate in this way are currently classified into various types such as plunger type, plunger preplier type, screw preplier type, and in-line screw type, and the performance, machine operability, maintenance, lifespan, etc. As a result of comprehensive examination in various fields, the plunger type and the inline screw type are recognized as the best methods and are widely used.

More specifically, FIG. 1 schematically shows an injection molding apparatus of the plunger type, and the synthetic resin stored in the hopper 11 measures the material required for molding by the material supply device 12 and enters the heating cylinder 13. The material introduced into the heating cylinder 13 is moved to the topido 14 and the resin moved to the topido 14 is melted by a heater 15 mounted outside the cylinder, and the melted resin is next cycled. When the piston 17 of the injection cylinder 16 is advanced by the injection operation, the molten resin is filled into the mold through the nozzle by the forward operation of the plunger 19. At this time, the resin filled into the mold is cooled by a cooling apparatus to be molded into a solid material, and when the mold is retracted, the product is taken out and completed.

The plunger type injection molding apparatus as described above has the advantages of simple structure and low manufacturing cost, but the material in the heating cylinder 13 is not melted uniformly, and the movement conditions of the raw material and the material for injection do not coincide. Injection was a difficult problem.

In addition, the in-line screw type injection molding apparatus has a structure as shown in FIG. 2, which will be described in more detail. When the raw material stored in the hopper 21 is transferred to the raw material conveying device side, the screw driving motor 23 rotates. The screw 22 rotates to move the resin forward, and the resin moved forward is melted by the heat of a heater installed outside the heating cylinder 25, and then the piston 27 of the injection cylinder 26 is advanced. As the screw 22 is advanced, the melted resin is filled into the mold through the nozzle.

At this time, the rotation of the screw 22 is stopped, and when the piston 27 of the injection cylinder 26 is retracted for the next injection, the material is transferred to the space between the blades of the screw 22, and the raw material is weighed by the required injection amount. Done.

As such, the injection molding apparatus generally uses plastic or vinyl, which is changed to a liquid form when heated, as an injection raw material, so that only the heating cylinder 25 melts the raw material and injects the inside of the mold through the nozzle. However, depending on the characteristics of the injection raw material, since the raw material is not completely melted or takes a long time for melting only by the heating cylinder 25 alone, the injection raw material is melted in advance before the raw material is transferred to the hopper 21. (21).

That is, when the injection raw material melted in the liquid state into the hopper 21, the raw material injected into the hopper 21 moves to the space between the blades of the screw 22 to move forward when the screw 22 rotates. In addition, the resin moved to the front is to be filled into the inside of the mold through the nozzle when the screw 22 advances.

Therefore, since the conventional injection molding apparatus uses plastic or vinyl, which is changed into a liquid close to liquid form as an injection raw material, as described above, there is no problem in injection molding. That is, the injection raw material molten in the form close to the liquid can flow into the space between the blade of the screw 22 through the hopper 21 at natural pressure.

Recently, PASCON (Polymer Ash Slag CONcreate) has been developed to recycle a kind of resource that has better tensile, bending, and fracture strength than conventional cement concrete, and has good durability, weather resistance, and chemical resistance. There is an urgent need for the development of an injection molding apparatus for molding.

Here, the raw material of the plastic concrete is made by mixing fly ash (soft coal ash) in the plastic raw materials such as waste plastic or waste vinyl, and is molded by injection molding with a force of about 1000 tons.

The raw material of such plastic concrete melts when heated above 250 ° C., but maintains a shape close to a solid having strong viscosity and adhesion.

However, when the raw material having a characteristic close to a solid even after melting, such as the raw material of the plastic concrete, into the conventional injection molding apparatus into the hopper 21, the raw material may enter the space between the blades of the screw 22. There was a problem that the product can not be molded because only the idling continues at the entrance.

The object of the present invention for solving the above problems is that the injection molding of the plastic concrete is possible, and by installing a hopper on the injection tube side of the injection molding apparatus for supplying raw materials to almost solid even when heated to a high temperature like the plastic concrete The present invention provides a raw material forced feeder capable of easily injection molding and a plastic injection molding apparatus using the same.

In order to achieve the above object, the present invention is provided with an injection hole to receive the raw material on the upper side and a nozzle on the front side, and an injection screw to inject the raw material supplied from the injection hole through the nozzle. A plastic injection molding apparatus comprising an injection unit having an injection tube installed, and a mold unit having a mold so as to shape the raw material injected through the nozzle into a predetermined shape, wherein the inlet is supplied with the raw material supplied into the injection tube. It is characterized in that it was made by installing the hopper hopper to be forced.

In addition, the hopper hopper is coupled to communicate with the inlet opening and the cylinder is installed on the upper end, the short axis case is coupled to one side of the long axis case and the cylinder is installed on the top to communicate with the long axis case, and the long axis case It is characterized by consisting of a hopper plate formed to communicate with them between the cases to expand the area receiving the raw material.

In addition, a feed screw that is rotated by the power of the motor is installed in the inside so as to transfer the raw material supplied from the raw material supply means, the outer peripheral surface is provided with a heater for melting the raw material therein; It is spaced apart / installed at a predetermined interval to the lower side of the supply pipe, the upper side is formed with an inlet in the lower side of the end of the supply pipe so that the raw material discharged from the supply pipe can be introduced into the inside, a nozzle is formed in the front side and the rear side of the base frame An injection tube fixed to the block, and having an injection screw installed therein for injecting raw materials through the nozzle while rotating and moving back and forth by an injection means; It is installed on the top of the base frame, the front block is coupled to the hydraulic means and a predetermined distance from the front block and at the same time are interconnected to the guide shaft and the center is formed through the passage hole through the nozzle of the injection pipe; A moving block positioned between the front and rear blocks so as to be slidably coupled to the guide shaft and coupled to the hydraulic means to move forward and backward; And a mold which is separately separated and coupled to the opposite surfaces of the rear block and the moving block, and molds the raw material injected through the nozzle of the injection tube into a predetermined shape.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

Repeated description of the same construction and operation as in the prior art will be omitted.

Figure 3 is an overall plan view showing a plastic injection molding apparatus according to the present invention, Figure 4 is a perspective view showing a plastic injection molding apparatus according to the present invention, Figure 5 is a front view showing a plastic injection molding apparatus according to the present invention, Figure 6 is an exploded perspective view showing the components of the injection portion in the plastic injection molding apparatus according to the present invention, Figure 7 is a view showing the hopper hopper is a raw material feeder in the plastic injection molding apparatus according to the present invention, Figure 8a is a FIG. 8B is a front view illustrating a state in which the moving block moves backward in the plastic injection molding apparatus according to the present invention, and FIG. 9 illustrates a plastic injection molding in accordance with the present invention. Partial enlarged perspective view showing a mold in a device.

First, referring to the raw material of the plastic concrete molded in the plastic injection molding apparatus 100 according to the present invention, the main component of the raw material is made of a resin (waste plastic or waste vinyl) and fly ash (flexible coal ash), Various auxiliary materials may be added to the.

As the auxiliary material, decapron (flame retardant raw material), antimony (flame retardant auxiliary material), fiberglass (shape solidifying material, hardening material) and the like are used.

Therefore, the raw material ratio of the plastic concrete is preferably made of 50 to 60% resin, 30 to 40% fly ash, 5 to 10% decafron, 2% antimony, 3 to 5% fiberglass.

Such plastic concrete has better tensile, bending and fracture strength than conventional cement concrete, and has good durability, weather resistance and chemical resistance, shorten construction period and light weight, and reduce cost by using general purpose and renewable resin. can do.

Hereinafter, the overall configuration of the plastic injection molding apparatus 100 according to the present invention will be described.

The plastic injection molding apparatus 100 has an injection portion 101 for melting and injecting the supplied raw material into the mold 170 and a raw material injected through the injection portion 101 in a predetermined shape. It consists of a mold body 102 having a mold 170 so as to be molded.

First, the injection unit 101 is a raw material supply means 190, a supply pipe 110 for transferring the raw material supplied from the raw material supply means 190 and the raw material supplied from the supply pipe 110 mold 170 The injection pipe 120 is injected into the inside of the, and between the supply pipe 110 and the injection pipe 120, the raw material forced supply 130, the hopper 131 is installed.

The raw material supply means 190 has a plurality of hoppers (191a) divided so that the appropriate amount of the raw materials having different characteristics described above can be added, and the raw material provided with a first raw material transfer screw (191b) at the bottom of the hopper (191a) The feeder 191 and the raw material is installed in the lower direction of the end of the first raw material feed screw 191b, the raw material is transferred from the first raw material feed screw 191b of the raw material feeder 191, and blended at the bottom The compounding machine 192 provided with the second raw material conveying screw 192a and the supply pipe 110 are installed so as to convey the raw materials, and the second raw material conveying screw 192a of the compounding machine 192 is conveyed. And a collector 193 for collecting the raw materials and supplying the raw materials to the supply pipe 110.

Therefore, the raw material supply means 190 is installed in the upper direction of the injection molding apparatus 100 in its structure.

The supply pipe 110 is supported by the frame 116 is installed at a constant height from the base frame 105, the feed screw 112 is rotated therein so as to transfer the raw material supplied from the raw material supply means 190 In addition to the possible installation, the front side is opened and the rear side is coupled with the reduction gear box 114. The transfer screw 112 has a rear end gear coupled to the reduction gear box 114, the reduction gear box 114 is connected to the motor 113 and the belt 115 is installed on the bottom of the motor 113 The transfer screw 112 is rotated by receiving power.

Therefore, when the motor 113 is driven, the feed screw 112 rotates to feed the supplied raw material.

In addition, the heater 111 is provided on the outer circumferential surface of the supply pipe 110 to melt the raw material therein.

That is, the solid raw material supplied from the raw material supply means 190 is melted by the heat generated by the heater 111 in the process of being transferred by the transfer screw 112. At this time, the raw material may be melted by the heater 111, but the melting is more actively due to the frictional heat generated by the friction with the raw material and the friction of the raw material itself when the transfer screw 112 rotates.

The melted raw material falls downward through the opened front side of the supply pipe 110, passes through the raw material forcing supplier 130, and is then forcedly supplied to the injection pipe 120.

In addition, the injection pipe 120 is spaced apart by a predetermined distance to the lower side of the supply pipe 110 and a nozzle 120a is formed in the front side is inserted into the through hole 151 of the rear block 150 to be described below and the rear The side is fixed / coupled to the fixed block 124 installed perpendicular to the base frame 105.

An injection hole 120b is formed on the upper side of the injection pipe 120 at a lower side of the front end of the supply pipe 110 so that the raw material discharged from the supply pipe 110 flows into the inside.

The mold of the mold body 102 through the nozzle 120a moves the raw material introduced into the inlet 120b while rotating and moving back and forth by the injection means 123 installed on one side of the injection pipe 120. An injection screw 122 for injecting 170 is installed.

The injection means 123 is slidably coupled to the guide shaft 125 which is fixed / installed in the horizontal direction on the rear side of the fixed block 124 and the guide shaft 125 and at the same time of the injection screw 122 A reduction gear box 126 rotatably geared with a rear end, a motor 127 installed in the reduction gear box 126 and gear-coupled with the injection screw 122 through the reduction gear box 126; The cylinder 128 is installed at both ends of the fixed block 124 to move the reduction gear box 126 forward and backward.

Therefore, when the injection screw 122 rotates when the motor 127 is driven, the raw material introduced through the injection hole 120b is transferred to the inside front of the injection pipe 120, and the cylinder 128 is operated. By slowly retracting the reduction gear box 126, the injection screw 122 is also retracted together so that the raw material is completely filled in the front side of the injection screw 122 in the injection pipe 120.

When the raw material is completely filled in the injection tube 120, the cylinder 128 is operated to advance the reduction gear box 126, and at this time, the injection screw 122 moves forward with the injection tube 120 inside. The filled raw material is injected into the mold 170 of the mold body 102 through the nozzle 120a.

In this case, the tip portion of the injection screw 122 is coupled to the toffee 122a so that the raw material can only go out in the forward direction when the injection screw 122 is advanced.

In addition, the outer circumferential surface of the injection tube 120 is preferably provided with a heater 121 for heating to maintain the molten state of the raw material supplied to the inlet (120b) continuously.

In addition, the inlet 120b of the injection tube 120 is a raw material consisting of the hopper 131 so as to force the raw material discharged from the supply pipe 110 into the injection tube 120 through the inlet 120b. Forced feeder 130 is installed.

The hopper 131 is in communication with the inlet (120b) and at the same time inclined at a predetermined angle coupled to the long axis case 132, the cylinder 132a is installed on the top, and the long axis case 132 to communicate with the long axis case 132 It is coupled to one side of the vertically and is formed to communicate with them between the short axis case 133 and the long axis case 132 and the short axis case 133 has a cylinder 133a is installed at the top to receive the raw material The hopper plate 134 extends the area.

That is, the hopper 131 has a long axis case 132 and the short axis case 133 is formed in a substantially "Y" shape, the inlet 120b of the injection tube 120 from the inside of the hopper plate 134. It is formed to communicate with).

In addition, the heater 135 is installed on the outer surface of the hopper 131 so as to maintain the molten state of the raw material supplied from the supply pipe 110.

Therefore, the raw material melted while being transported along the supply pipe 110 is introduced into the hopper plate 134. When the raw material is injected into the hopper plate 134, the raw material is pushed into the cylinder 133a of the shortened case 133 into the long axis case 132, and the raw material introduced into the long axis case 132 again is the long axis case. While the cylinder 132a of 132 is pushed toward the inlet 120b, the cylinder 132a is forcibly pushed into the injection tube 120.

Next, the body portion 102 is installed on the upper end of the base frame 105, the front block 140 is coupled to the hydraulic means 141, and is spaced apart from the front block 140 by a predetermined interval The front block 140 is connected to the guide shaft 145 and the rear block 150 having a through hole 151 formed therein so that the nozzle 120a of the injection pipe 120 passes through the front block 140. Located between the rear blocks 140 and 150 is slidably coupled to the guide shaft 145 and coupled with the hydraulic means 141 is composed of a moving block 160 that moves before and after.

Here, the guide shaft 145 is preferably connected to / installed at four corners of the front and rear blocks 140 and 150, and moves to the bottom of the movable block 160 while moving forward and backward together. The slide 161 supporting the 160 is coupled.

In addition, a pair of molds 170 are separated and coupled to the opposite surfaces of the rear block 150 and the moving block 160, respectively. The mold 170 is to mold the raw material injected into the interior through the nozzle 120a of the injection tube 120 into a predetermined shape.

The hydraulic means 141 is coupled to the center of the front block 140 to move forward the hydraulic cylinder 142 and coupled to both ends of the front block 140, the forward A reverse hydraulic cylinder 143 for reversing the moving block 160 in a closed state.

In addition, an oil tank 144 is installed at the upper end of the front block 140 to supply oil to all the hydraulic cylinders installed in the injection molding apparatus 100 of the present invention. In addition, although not shown in the figure, a hydraulic pump is provided for supplying oil to each hydraulic cylinder by receiving oil from the oil tank 144.

The molds 170 are separated from each other, and are coupled to the rear block 150 and the moving block 160, and protrusions 173 and grooves 174 are formed on the corresponding surfaces so as to shape the product. It consists of the 1st metal mold 171 and the 2nd metal mold 172.

That is, when the movable block 160 is advanced to be coupled to close the first and second molds 171 and 172, the protrusion 173 is inserted into the groove 174, and the protrusion 173 and the groove ( 174) The raw material is injected into the gap between them and the product is molded.

In addition, the upper and lower sides of the protrusion 173 is formed with projections on the surface facing the protrusion 173 so that the hole is formed on the side of the product during injection molding of the product, and the hole forming block formed with the insertion hole in the center ( 175 is slidably installed in the up and down directions. The hole forming block 175 is normally kept spaced apart from the protrusion 173 by an elastic member (not shown).

In addition, the hole forming block 175 is inserted into and separated from the groove 174 by the insertion hole of the hole forming block 175 depending on whether the first and second molds 171 and 172 are coupled to each other. Raising and lowering pin 176 is installed to be inclined at a predetermined angle.

That is, when the first and second molds 171 and 172 are coupled, the pin 176 is inserted into the insertion hole of the hole forming block 175 and the hole forming block 175 is lowered. As the projection of 175 contacts the protrusion 173, a hole is formed in the side of the product during injection molding.

In addition, when the first and second molds 171 and 172 are spaced apart from each other, the pin 176 is also separated from the insertion hole of the hole forming block 175. By being spaced apart from the protrusion 173 it is to be able to take out the molded product.

In addition, a flow path (not shown) is formed inside the mold 170 to allow the cooling water to flow, and a hose 177 is coupled to the outside to cool the molded product to supply the cooling water to the flow path.

On the other hand, the rear block 150 is almost fixed to the base frame 105, but can be repaired in case of failure or damage of the injection pipe 120, the nozzle 120a and the injection screw 122, etc. It is coupled to the base frame 105 so as to be slidable, and the cylinder 180 is further installed on the upper end of the base frame 105 to move the rear block 150 forward, backward.

Hereinafter, the operation of the plastic injection molding apparatus 100 according to the present invention will be described.

First, when each raw material is introduced into each of the divided hopper 191a of the raw material feeder 191, the raw material is the compounding machine 192 by the first raw material transfer screw 191b installed at the bottom of the raw material feeder 191 Flows into). Raw materials flowing into the blender 192 are collected by the second raw material transfer skew installed at the lower end of the blender 192 after being blended in the blender 192.

The raw material collected by the collector 193 is supplied to the supply pipe 110, the raw material supplied to the supply pipe 110 is transferred to the front side along the transfer screw 112 rotating therein, and in this process the supply pipe The raw material in the supply pipe 110 is melted by the heater 111 provided on the outer circumferential surface of the 110 and the melted raw material is discharged through the open end of the supply pipe 110.

The raw material discharged from the supply pipe 110 is introduced into the hopper plate 134 of the hopper 131. When the raw material is introduced into the hopper plate 134 as described above, the cylinder 133a of the shortened case 133 is pushed into the long axis case 132, and the raw material introduced into the long axis case 132 is returned. The cylinder 132a of the long shaft case 132 is pushed toward the inlet 120b of the injection tube 120 to be forced into the injection tube 120.

Subsequently, the raw material forcibly supplied to the injection tube 120 by the hopper 131 continues toward the inside of the injection tube 120 by the injection screw 122 rotating inside the injection tube 120. In this case, the reduction gear box 126 coupled with the injection screw 122 is slowly retracted by the cylinder 128 installed in the fixed block 124, and the injection screw 122 is also backward.

That is, while the injection screw 122 rotates backwards at the same time as the rotation is gradually rotated to continue to feed the raw material forcibly supplied by the hopper 131 to the inside of the injection pipe 120 inside the injection pipe 120 The raw material is completely filled in the front side of the injection screw 122.

Thus, when the raw material is completely filled in the injection pipe 120, the moving block 160 is advanced by the forward hydraulic cylinder 142 installed in the front block 140, the moving block 160 And the first mold 171 and the second mold 172 coupled to the rear block 150 are closed.

Then, after the first and second molds 171 and 172 are coupled, the cylinder 128 installed in the fixed block 124 is operated, this time advancing the reduction gear box 126 and simultaneously injecting screws. When the injection screw 122 is advanced, the raw material filled in the injection pipe 120 passes between the first and second molds 171 and 172 through the nozzle 120a. Injection is performed to shape the product.

When the molding of the product is completed, the product is cooled. Then, when the moving block 160 is reversed by the backward hydraulic cylinder 143 installed in the front block 140, the molded product is stored in the mold 170. Taking out is completed all processes.

As described above, in the present invention, only the case where the hopper 131, which is the raw material forcing supplier 130, is installed in the injection molding apparatus 100 for molding plastic concrete, is not limited thereto. Of course, it can be applied to the device 100.

In addition, when the shape of the mold 170 is deformed, it is possible to mold more various products made of plastic concrete material.

According to the present invention described above, by supplying the raw material forced feeder on the injection tube side of the injection molding machine by forcing the raw material, even when heated to high temperature, such as the plastic concrete, the raw material that maintains nearly solid characteristics, etc. It can be easily injection-molded, thus producing more diverse products of plastic concrete.

Claims (17)

Inlet 120b is formed to receive the raw material on the upper side, and the nozzle 120a is provided at the front side, and the inside is injected to inject the raw material supplied from the inlet 120b through the nozzle 120a. An injection unit 101 having an injection tube 120 having a screw 122 installed therein, and a mold 102 having a mold 170 so as to shape a raw material injected through the nozzle 120a into a predetermined shape. In the plastic injection molding apparatus comprising, Raw material forced feeder of the plastic injection molding apparatus, characterized in that the inlet (120b) is formed by installing a hopper 131 so as to force the supplied raw material into the injection pipe (120). The method of claim 1, The hopper 131 is coupled to communicate with the inlet (120b) and the long axis case 132, the cylinder 132a is installed on the upper end, and on one side of the long axis case 132 to communicate with the long axis case 132 The hopper plate 134 which is coupled to the short axis case 133 and the cylinder 133a is installed on the top, and the long axis case 132 and the short axis case 133 to communicate with them to expand the area receiving the raw material. Raw material forced feeder of the plastic injection molding apparatus, characterized in that consisting of. The method of claim 2, Raw material forced feeder of the plastic injection molding apparatus, characterized in that the heater 135 is installed on the outer surface of the hopper 131 to maintain the molten state of the supplied raw material. The method according to any one of claims 1 to 3, The raw material is forced feeder of the plastic injection molding apparatus, characterized in that made of a resin and fly ash. In order to transfer the raw material supplied from the raw material supply means 190, there is provided a conveying screw 112 that rotates with the power of the motor 113, the heater 111 is provided on the outer peripheral surface to melt the raw material therein Supply pipe 110; A predetermined interval is spaced / installed below the supply pipe 110, and an injection hole 120b is formed at an end lower side of the supply pipe 110 so that the raw material discharged from the supply pipe 110 is introduced into the upper side. The nozzle 120a is formed at the front side and the rear side is fixed to the fixed block 124 of the base frame 105, and therein, the raw material is moved through the nozzle 120a while rotating and moving back and forth by the injection means 123. Injection tube 120 is installed to inject the injection screw 122; It is installed on the top of the base frame 105, the hydraulic block 141 is coupled to the front block 140 and the front block 140 and a predetermined distance and at the same time are mutually connected to the guide shaft 145 and the center A rear block 150 in which a through hole 151 is formed to allow the nozzle 120a of the injection tube 120 to pass therethrough; A moving block 160 positioned between the front and rear blocks 140 and 150 and slidably coupled to the guide shaft 145 and coupled to the hydraulic means 141 to move forward and backward; A mold 170 which is separately coupled to the opposite surfaces of the rear block 150 and the moving block 160 and molds the raw material injected through the nozzle 120a of the injection tube 120 into a predetermined shape; Plastic injection molding apparatus comprising a. The method of claim 5, wherein In the inlet (120b) of the injection pipe 120 is characterized in that the hopper 131 is installed to forcibly supply the raw material discharged from the supply pipe 110 into the injection pipe 120 through the inlet (120b) Plastic injection molding machine. The method of claim 6, The hopper 131 is coupled to communicate with the inlet (120b) and the long axis case 132, the cylinder 132a is installed on the upper end, and on one side of the long axis case 132 to communicate with the long axis case 132 The hopper plate 134 which is coupled to the short axis case 133 and the cylinder 133a is installed on the top, and the long axis case 132 and the short axis case 133 to communicate with them to expand the area receiving the raw material. Plastic injection molding apparatus comprising a). The method of claim 7, wherein Plastic injection molding apparatus, characterized in that the heater 135 is installed on the outer surface of the hopper 131 to maintain the molten state of the supplied raw material. The method of claim 6, The raw material is a plastic injection molding apparatus comprising a resin and a fly ash. The method according to any one of claims 5 to 9, The injection means 123 is slidably coupled to the guide shaft 125 which is fixed / installed at the rear side of the fixing block 124 and the guide shaft 125 and at the same time the rear end of the injection screw 122. And a reduction gear box 126 rotatably coupled with the motor 127 installed in the reduction gear box 126 and gear-coupled with the injection screw 122 through the reduction gear box 126, and the fixed portion. Plastic injection molding apparatus is installed in the block 124, characterized in that consisting of a cylinder (128) for moving forward and backward the reduction gear box (126). The method of claim 10, Plastic injection molding apparatus, characterized in that the top end of the injection screw 122 is coupled to the top so that the raw material to go out only in the forward direction when the injection screw 122 is advanced. The method according to any one of claims 5 to 9, The mold 170 is formed of a first mold 171 and a second mold 172 each having a protrusion 173 and a groove 174 formed thereon so as to form a product on a surface corresponding to each other. On the upper and lower sides of the 173, protrusions are formed on the surfaces facing the protrusions 173, respectively, and insertion holes are formed in the center thereof, and hole-forming blocks 175 are installed to slide upward and downward, and the grooves 174 are provided. ) Pins 176 that raise and lower the hole forming block 175 while being inserted into and separated from the insertion hole of the hole forming block 175 according to whether the first and second molds 171 and 172 are coupled to each other. Plastic injection molding apparatus characterized in that the installation. The method according to any one of claims 5 to 9, The hydraulic means 141 is coupled to the center of the front block 140, the forward hydraulic cylinder 142 for advancing the moving block 160, and coupled to both ends of the front block 140, the advanced state Plastic injection molding apparatus, characterized in that consisting of a reverse hydraulic cylinder (143) for reversing the moving block (160). The method of claim 13, Plastic injection molding apparatus, characterized in that the oil tank (144) is installed on the upper end of the front block 140 to supply oil to each hydraulic cylinder. The method according to any one of claims 5 to 9, The raw material supply means 190 is provided with a plurality of hoppers are divided so that the appropriate amount of raw materials having different characteristics, and the raw material feeder 191 is provided with a first raw material screw (191b) at the bottom of the hopper, and the first 1 Mixer 192 is installed in the lower direction of the end of the raw material feed screw (191b) to mix the raw materials input from the raw material feeder 191, and the second raw material transfer screw (192a) is installed at the bottom to transfer the blended raw materials And a collector 193 installed above the supply pipe 110 and collecting raw materials transferred from the second raw material feeding screw 192a of the blender 192 to supply raw materials to the supply pipe 110. Plastic injection molding apparatus, characterized in that made. The method according to any one of claims 5 to 9, Plastic injection molding apparatus, characterized in that the heater 121 is installed on the outer circumferential surface of the injection pipe 120 to maintain the molten state of the supplied raw material. The method according to any one of claims 5 to 9, The rear block 150 is slidably coupled to the base frame 105, and the cylinder 180 is installed on the upper end of the base frame 105 to move the rear block 150 forward, backward. Plastic injection molding machine.

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