KR20100026301A - Pressing formation apparatus for waste resin reproduction - Google Patents

Abstract

PURPOSE: An extruding apparatus for waste resin regeneration is provided to efficiently cool a pellet extruded from an extrusion stand by circulating air from the upper side of the extruding apparatus to the lower side of the extruding apparatus and to rapidly collect the pellet to the lower side of the extruding apparatus. CONSTITUTION: An extruding apparatus for waste resin regeneration comprises: a waste resin injection unit(110) injecting waste resin; a heating cylinder(120) melting the waste resin injected by the waste resin injection unit; a transfer screw(130) extruding the waste resin melted by the heating cylinder to the outside; an extrusion stand(140) formed with multiple nozzles to extrude the melted waste resin transferred by the transfer screw; a cutting unit(150) cutting the melted waste resin extruded from the nozzles on the extrusion stand to form the waste resin into a pellet; and a pellet collecting unit(160) transferring the pellet to a raw material tank of a resin product manufacturing apparatus.

Description

Pressing formation apparatus for waste resin reproduction

The present invention relates to an extrusion molding apparatus for recycling waste resin, which recycles waste resin into a pellet support material so that waste resin generated in the production process of various film products using an extruder can be reused in the production of the product. More particularly, the present invention relates to an extrusion molding apparatus for recycling waste resin, in which a structure is improved so that pellets can be extruded smoothly and quickly collected in the process of extruding and cutting into pellets.

In general, in a resin product production apparatus that produces various films, both ends of the film are cut and winded in order to make the surfaces on both sides of the film even while the film width is constant during the production of the film.

The cut portion of the film is usually generated as a thin and narrow waste resin of about 0.02 to 0.2 mm in thickness and 10 to 50 mm in width, and this waste resin is generated depending on the size of the film, but occurs approximately 3-5% of the feedstock initially.

As described above, the waste resin generated in the production process of various film products may be discarded as general waste, collected at a predetermined place until the appropriate amount is collected and then reproduced as raw materials through grinding with other waste resins.

However, because it is mixed / recycled with the waste resins of other components, there was a problem that can not be recycled with a low water support fee.

In order to solve this problem, the applicant has applied for a waste resin recycling extrusion molding device (Patent No. 0483945) for recycling waste resins generated in the production process of film products of various extruders into pellets of the same components as the raw materials without grinding. I have been registered.

The conventional waste resin recycling extrusion molding apparatus is a waste resin input means, waste resin input means for continuously inputting the waste resin (or waste resin pieces) cut off the edge of the film generated from the resin product production apparatus without a separate grinding process Kneading means for kneading the waste resin introduced through the through, a heating cylinder for melting the waste resin of the kneading process, an extrusion die formed with a plurality of nozzles for extruding the molten resin by the heating cylinder, the extrusion through the outer side nozzle of the extrusion die Molten resin cutting means for cutting the molten resin to be raw material into granule pellets, and water support material formed of granule pellets, suctioned and collected downward and transported to the raw material tank of the resin product production apparatus. It consists of pellet collecting means.

The molten resin cutting means is for cutting the molten resin extruded through the nozzle of the extrusion die in the form of granules, a rotating shaft rotatably installed at regular intervals on the same line of the kneading means, elastically on the outer side of the extrusion die It consists of a rotating cutter for cutting the molten resin in close contact with the extrusion through the rotation, and a rotating shaft drive motor for driving the rotating shaft.

In the above melt resin cutting means, waste resin is introduced into the kneading means by waste resin injecting means, and the melted resin is melted together with the kneading transfer by the kneading means and the heating cylinder, and the molten resin is extruded through the nozzle of the extrusion die. The molten resin is made into a raw material by cutting with a.

The pellet collecting means is for collecting and cooling the pellets in the form of granules cut by the molten resin cutting means, the pellet collecting means is a hopper which is installed on the outer side of the extrusion die, the upper side of the hopper is installed Opening and closing lid with air inlet formed on the side, and installed on one side of the hopper to cool the support fee through the discharge of the air in the hopper to the outside and collected at the same time through the raw material supply line to the raw material tank of the main product production apparatus It consists of a raw material suction blower to convey.

The pellet collecting means collects the pellets into the hopper according to the driving of the raw material suction blower and transfers them to the raw material tank through the raw material supply line. As such, the pellets transferred to the raw material tank by the raw material suction blower are cooled and hardened in the process of being sucked by the raw material suction blower, and external air flows into the hopper through the air inlet of the opening / closing lid. .

However, in the extrusion apparatus for recycling waste resin, in the process of cutting the molten resin extruded from the nozzle of the extrusion die into pellets, a large friction force is generated between the rotary cutter and the extrusion die during a long cutting operation. Due to the overheating of the rotary cutter, the melted resin extruded from the nozzle sticks to the rotary cutter or the like, and the pellets that are cut fall frequently.

In addition, in the conventional extrusion molding apparatus for waste resin recycling, a raw material suction blower adopts a structure for cooling the pellets extruded through the nozzle of the extrusion die by sucking external air through the air inlet of the opening and closing lid. In the same suction cooling structure, the molten resin (pellets) extruded through the nozzle of the extrusion die cannot be adequately cooled and collected quickly under the hopper, so that the pellets are entangled with each other or stick to the inner surface of the hopper and the transfer pipe. Occurs.

The present invention is to solve the above-mentioned problems, the external air is blown directly from the top to the bottom of the pellets to efficiently cool the pellets extruded from the extrusion die and quickly collect the downwards, in the flow path of the cutting plate when cutting the pellets It is an object of the present invention to provide an extrusion molding apparatus for recycling waste resin, by supplying air (air) and / or cooling water to increase the cooling effect of the pellets and effectively preventing the pellets from sticking.

In order to achieve the above object, the present invention provides an extrusion molding apparatus for waste resin recycling.

Waste resin recycling extrusion molding apparatus of the present invention is a waste resin input means for injecting waste resin; A heating cylinder for melting waste resin introduced through the waste resin injecting means; A transfer screw for extruding the waste resin melted by the heating cylinder to the outside; An extrusion die in which a plurality of nozzles are formed to extrude the molten resin to the outside by the transfer screw; Cutting means for cutting the molten resin extruded through the nozzle of the extrusion die into a pellet form; And a pellet collecting means for collecting the support material formed into pellets and transferring the raw material to the raw material tank of the resin product production apparatus.

Here, the pellet collecting means blows external air directly from the upper side to the lower side of the pellet to effectively cool and quickly collect the pellet extruded from the extrusion die, and the cutting means is a flow path of the cutting plate during pellet cutting. By supplying air or / and cooling water into it, the cooling effect can be enhanced to effectively prevent pellets from tangling and sticking to the cutting plate.

The pellet collecting means having such a function includes: a hopper installed at a lower side of the extrusion die and having first and second blow holes formed at both sides thereof to collect the pellets cut by the cutting means; An outside air guide installed at an upper portion of the hopper to guide outside air toward the first blowing hole and the second blowing hole of the hopper; And a blower connected to the external air guide to supply external air to the external air guide.

In the pellet collecting means, when external air is supplied through the first blowing hole and the second blowing hole, the pellet extruded from the nozzle of the extrusion die is cooled, does not stick, and is quickly transferred to the bottom of the hopper.

A third blowing hole may be further formed between the first blowing hole and the second blowing hole. The pellets extruded from the nozzle of the extrusion die are cooled more quickly by the external air blown through the third blower hole, and are not quickly stuck, and are quickly transferred to the lower portion of the hopper.

 The rear surface of the hopper is provided with a transparent window for visually confirming the cutting process. The operator can check whether the pellets extruded from the nozzle of the extrusion die through the window is cooled efficiently and do not stick.

The cutting means includes a base plate; A transfer shaft installed at both sides of the base plate; A transfer plate coupled to the transfer shaft; A driving motor for cutting installed on the transfer plate; A cutting member rotatably installed by the driving motor for cutting and having a cutting plate installed at an end and a flow path formed therein; And a cutting member cooling unit connected to the cutting member to supply at least one of air and cooling water through the flow path.

The cutting member is a cutting shaft; A cutting plate fixedly installed at an end of the cutting shaft; And it may be composed of a blade formed at the end of the cutting plate.

The cutting plate cuts the molten resin (pellets) extruded from the extrusion die while being elastically in close contact with the outer side of the extrusion die.

 During the cutting of the molten resin extruded from the extrusion die, the cutting member cooling unit supplies either air or cooling water, or air and cooling water together into the flow path of the cutting member to effectively contact the contact portion between the extrusion die and the cutting plate. It cools and directly cools the pellet extruded through the nozzle, thereby increasing the yield.

As described above, according to the present invention, since the external air is directly blown from the upper part to the lower part of the pellet, the pellets extruded from the extrusion die are efficiently cooled and quickly collected downward. Sticking to the side can be effectively prevented.

In addition, during cutting of the pellets, the air or / and cooling water is supplied through the flow path of the cutting plate to prevent overheating of the nozzle and the cutting plate of the extrusion die, thereby extending the service life of the parts and extruding through the nozzle of the extrusion die. The pellets can be effectively prevented from sticking together and sticking to the cutting plate.

As described above, according to the present invention, the external air is blown directly from the upper side to the lower side of the pellet to efficiently cool the pellets extruded from the extrusion die and quickly collect them downward so that the pellets stick to the side of the hopper. Can be effectively prevented.

In addition, during cutting of the pellets, the air or / and cooling water is supplied through the flow path of the cutting plate to prevent overheating of the nozzle and the cutting plate of the extrusion die, thereby extending the service life of the parts and extruding through the nozzle of the extrusion die. The pellets can be effectively prevented from sticking to the cutting plate.

Hereinafter, with reference to the accompanying drawings will be described in detail for the extrusion molding apparatus for waste resin recycling according to an embodiment of the present invention.

1 is a front view showing an extrusion molding apparatus for recycling waste resin according to a preferred embodiment of the present invention, FIG. 2 is a right side view of FIG. 1, FIG. 3 is a front view showing a cutting means of FIG. 1, and FIG. 4 is FIG. 3. 5 is a plan view of FIG. 3, FIG. 6 is a plan view of the cutting plate of FIG. 3, FIG. 7 is a front view of the hopper and the outside air guide according to a preferred embodiment of the present invention, and FIG. 9 is a right side view of FIG. 7, and FIG. 10 is an enlarged view of FIG. 9.

First, referring to Figures 1 to 6, waste resin recycling extrusion molding apparatus 100 according to a preferred embodiment of the present invention is a waste resin input means 110 for injecting waste resin; A heating cylinder 120 for melting waste resin introduced through the waste resin injecting means; A transfer screw 130 for extruding the waste resin melted by the heating cylinder to the outside; An extrusion die 140 in which a plurality of nozzles 141 are formed to extrude the melted resin by the transfer screw 130 to the outside; Cutting means 150 for cutting the molten resin is extruded through the nozzle 141 of the extrusion die 140 to form a raw material in the form of pellets; And a pellet collecting means 160 which collects the support material formed of pellets and transfers it to the raw material tank of the resin product production apparatus.

One side of the base frame 101 is a feed screw drive motor 137 is installed.

The gearbox 133 is installed on the rotation shaft 131 of the feed screw 130, and the feed screw drive motor 137 is connected to the gearbox 133 through a belt 135.

The cutting means 150 serves to prevent overheating of the extrusion die 140 and the cutting plate 157b to be described later by supplying one of air and cooling water to the cutting portion, or air and cooling water together.

The cutting means 150 is composed of a base plate 151, a transfer shaft 152, a transfer plate 153, a driving motor 154 for cutting, a cutting member 157, and a cutting member cooling unit 158. .

The transfer shaft 152 is installed on both sides of the base plate 151 in the longitudinal direction of the base frame 101.

The transfer plate 153 is coupled to the transfer shaft 152, and the cutting drive motor 154 is installed on the transfer plate 153.

A clamp lever 155 is installed on the transfer plate 153. The operator may hold the clamp lever 155 and slide the transfer plate 153 relative to the transfer shaft 152.

The cutting member 157 is rotatably installed by the cutting driving motor 154, and a flow path 156 is formed therein.

The cutting member cooling unit 158 is connected to the flow path 156 of the cutting member 157 to supply air or / and cooling water through the flow path 156.

Air or / and cooling water supplied to the cutting member cooling unit 158 may be introduced into the flow path 156 by a pump (not shown), and the air or / and cooling water introduced into the flow path 156 will be described later. It may be ejected toward the blade 157c.

Overheating of the nozzle 141 and the blade 157c of the extrusion die 140 may be prevented by air or / and cooling water, thereby effectively preventing the resin from being extruded through the nozzle 141.

Looking at the configuration of the cutting member 157 in more detail, the cutting shaft 157a is rotatably connected to the driving / driven gear portion 154a, 154b of the cutting drive motor 154.

A cutting plate 157b is installed at the end of the cutting shaft 157a, and a blade 157c is formed at the end of the cutting plate 157b.

Here, the cutting plate 157b cuts the molten resin extruded from the extrusion die 140 in a state in which the cutting plate 157b is elastically in close contact with the outer side of the extrusion die 140.

During the cutting process of the molten resin extruded from the extrusion die 140, the cutting member cooling unit 158 supplies air or / and cooling water to the flow path 156 of the cutting member 157, and the extrusion die ( 140 and the contact portion and the pellet of the cutting plate 157b are directly cooled.

1, 7 to 10, the pellet collecting means 160 blows the external air directly from the top to the bottom of the pellet, the pellet extruded from the nozzle 141 of the extrusion die 140 It effectively cools and effectively prevents the pellets from sticking to the inner surface of the hopper 161 or the pellets stick to each other.

The pellet collecting means 160 having such a function is installed at the side of the extrusion die 140 to collect the pellets cut by the cutting means 150, and the first blowing hole 161a and the first at both sides. A hopper 161 having two blowing holes 161b formed therein; An outside air guide 163 installed on an upper portion of the hopper 161 to guide the outside air toward the first blowing hole 161a and the second blowing hole 161b of the hopper 161; And a blower 165 connected to the external air guide 163 to supply external air to the external air guide 163.

The blower 165 is connected to the external air guide 163 through a hose 165a. A cutting shaft insertion hole 168 is formed on the rear surface of the hopper 161.

In the pellet collecting means 160, when the external air supplied from the blower 165 is supplied into the hopper 161 through the first blowing hole 161a and the second blowing hole 161b, the extrusion die ( The molten resin extruded from the nozzle 141 of the 140 is effectively cooled, and the cooled pellets are quickly collected below the hopper 161 without sticking.

The pellets collected in the hopper 161 are transferred to the raw material tank of the resin product production apparatus through a raw material supply line (not shown).

In addition, a third blowing hole 161c may be further formed between the first blowing hole 161a and the second blowing hole 161b.

In forming the first blowing holes 161a and the second blowing holes 161b, the pellets may stick together when the pellets extruded through the nozzle 141 of the extrusion die 140 are not cooled. do.

On the contrary, when too cool, the cutting operation of the pellets becomes difficult, so that the blowing directions and sizes of the first blowing hole 161a, the second blowing hole 161b, and the third blowing hole 161c are cooled so that the pellets are properly cooled at an appropriate timing. Due consideration shall be given.

In addition, the wind pressure ejected through the first blowing hole 161a, the second blowing hole 161b, and the third blowing hole 161c should be properly considered.

In addition, the first blowing hole 161a and the second blowing hole 161b not only cool the pellets properly but also transfer the pellets to the lower side of the hopper 161 together with the third blowing hole 161c so that the pellets are entangled with each other. Effectively prevent the sticking phenomenon, can increase the yield.

The back of the hopper 161 is provided with a transparent window 167 for visually confirming the cutting operation by the cutting means 150.

Referring to the operation of the waste plastic recycling extrusion molding apparatus according to a preferred embodiment of the present invention configured as described above are as follows.

First, when the waste resin pieces are introduced into the heating cylinder 120 by the waste resin injecting means 110, the heating cylinder 120 melts the waste resin.

The melted waste resin is extruded and transferred to the extrusion die 140 by the transfer screw 130, and then extruded through the nozzle 141 of the extrusion die 140.

At the same time, the driving / driven gear parts 154a and 154b are sequentially rotated by the operation of the cutting motor 154.

By the rotation of the driving / driven gear parts 154a and 154b, the cutting shaft 157a of the cutting member 157 rotates.

When the cutting shaft 157a is rotated, the cutting plate 157b installed at the end of the cutting shaft 157a is also rotated, at which time the blade 157c is pellet extruded from the nozzle 141 of the extrusion die 140. To cut.

Meanwhile, immediately before cutting of the pellets, air or / and cooling water introduced into the cutting member cooling unit 158 is ejected through the flow path 156 of the cutting shaft 157a and the cutting plate 157b.

As a result of the jet of air or / and cooling water, the contact portion between the pellet extruded from the extrusion die nozzle and the extrusion die 140 and the cutting plate 157b is cooled, and the pellet adheres to the cutting plate 157b. In addition, the pellets are entangled with each other so that the production amount can be increased.

In addition, the wind generated by the blower 165 is introduced into the outside air guide 163, the wind introduced into the outside air guide 163 is the first blowing hole (161a), the second blowing hole ( High pressure is blown out through 161b and the 3rd blowing hole 161c.

The present invention is not a structure for cooling and collecting the pellets by suctioning the outside air as in the prior art, and directly blows the wind from the upper portion to the lower portion of the pellet through the first blowing hole 161a and the second blowing hole 161b. By spraying the pellets effectively cooling the pellet as well as the third blowing hole (161c) to quickly collect the pellets below the hopper 161, the pellets stick to the inner surface of the hopper 161 or the pellets hopper (161) Production can be increased by effectively preventing the inner surface from sticking together or entangled with each other.

As described above, a preferred embodiment of the present invention discloses that the first blowing hole, the second blowing hole, and the third blowing hole are formed in the hopper, but other blowing holes may be additionally formed or reduced according to design conditions.

As such, the rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications within the scope of the claims. It is self evident.

1 is a front view showing an extrusion molding apparatus for waste resin recycling according to an embodiment of the present invention.

FIG. 2 is a right side view of FIG. 1

3 is a front view showing the cutting means of FIG.

4 is a right side view of FIG.

5 is a plan view of FIG.

6 is a plan view showing the cutting plate of FIG.

7 is a front view showing a hopper and the outside air guide according to a preferred embodiment of the present invention

8 is a left side view of FIG. 7;

9 is a right side view of FIG.

10 is an enlarged view of FIG. 9;

* Description of main parts

100: extrusion molding apparatus for waste resin recycling

101: base frame

110: waste resin input means

120: heating cylinder

130: feed screw

131: axis of rotation of the feed screw

133: gearbox

135: belt

137: feed screw drive motor

140: extrusion die

141: nozzle

150: cutting means

151: base plate

152: feed shaft

153: transfer plate

154: drive motor for cutting

154a, 154b: drive / follower

155: clamp lever

156: Euro

157: cutting member

157a: cutting shaft

157b: cutting plate

157c: blade

158: cutting member cooling unit

160: pellet collection means

161: hopper

161a: first blowing hole

161b: second blowing hole

161c: third blowing hole

163: outside air guide

165: blower

165a: hose

167: Windows

168: cutting shaft insertion hole

Claims (8)

Waste resin injecting means for injecting waste resin; A heating cylinder for melting waste resin introduced through the waste resin injecting means; A transfer screw for extruding the waste resin melted by the heating cylinder to the outside; An extrusion die in which a plurality of nozzles are formed to extrude the molten resin to the outside by the transfer screw; Cutting means for cutting the molten resin extruded through the nozzle of the extrusion die into a pellet form; And a pellet collecting means for collecting the feed material formed into pellets and transferring the raw material to the raw material tank of the resin product production apparatus. The pellet collecting means directly blows the outside air from the top to the bottom to cool the pellet extruded from the extrusion die and collect the downward, The cutting means is an extrusion molding apparatus for recycling waste resin, characterized in that for supplying at least one of air, cooling water to the cutting portion. The method of claim 1, The pellet collecting means A hopper installed on a side surface of the extrusion die to collect pellets cut by the cutting means and having first and second blow holes formed on both sides thereof; An outside air guide installed at an upper portion of the hopper to guide outside air toward the first blowing hole and the second blowing hole of the hopper; And Including an air blower connected to the external air guide to supply external air to the external air guide, When external air is supplied through the first and second blow holes, the molten resin extruded from the nozzle of the extrusion die is cooled, and is transported directly under the hopper without sticking. Molding apparatus. The method of claim 1, And a third blowing hole is further formed between the first blowing hole and the second blowing hole. The method of claim 2, The rear surface of the hopper, the extrusion molding apparatus for recycling waste resin, characterized in that a window for visually confirming the cutting operation is installed. The method according to claim 1 or 2, The cutting means Base plate; A transfer shaft installed at both sides of the base plate; A transfer plate coupled to the transfer shaft; A driving motor for cutting installed on the transfer plate; A cutting member rotatably installed by the driving motor for cutting and having a cutting plate installed at an end and a flow path formed therein; And And a cutting member cooling unit connected to the cutting member to supply at least one of air and cooling water through the flow path. The method of claim 5, The cutting member Cutting shaft; A cutting plate fixedly installed at an end of the cutting shaft; And Waste resin regeneration extrusion molding apparatus comprising a blade formed at the end of the cutting plate. The method of claim 5, The cutting plate is an extrusion molding apparatus for recycling waste resin, characterized in that for cutting the molten resin extruded from the extrusion die in a state in which it is elastically in close contact with the outer side of the extrusion die. The method of claim 5, During the cutting of the molten resin extruded from the extrusion die, at least one of air and cooling water is supplied from the cutting member cooling part into the flow path of the cutting member to be extruded from the contact portion and the nozzle of the extrusion die and the cutting plate. An extrusion molding apparatus for recycling waste resin, characterized in that the pellet is cooled directly.

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