KR20080112066A - Device and method for recycling waste-plastics, and products and form manufactured by them - Google Patents

Abstract

An apparatus and a method for recycling waste synthetic resins are provided to easily recycle the waste synthetic resins that could not be recycled in the past and to increase merchantability of the molded articles, and molded articles and molds manufactured by the same are provided. An apparatus for recycling waste synthetic resins comprises: an extrusion part(10) repetitively performing coercive extrusion of a molten synthetic resin(hereinafter referred to as 'molten resin') comprising alien substances flown in from the outside using a reciprocating piston; a molding part(30) connected to the extrusion part to successively discharge molded molten resin after molding the molten resin into a specific shape while the molten resin extruded in the extrusion part is passing through the molding part; and a cooling part(50) which is constructed such that the cooling part passes through the molding part to cure the molten resin by rapidly cooling the molten resin molded in the molding part, and which supplies a cooling fluid to gradually lower a molten resin-cooling temperature in a direction that the molten resin is molded and discharged.

Description

Device and method for recycling waste-plastics, and products and form manufactured by them

The present invention relates to an apparatus and a method for regenerating used vinyl or waste synthetic resin for farming or industrial purposes, and in particular, to melt and recycle waste vinyl, waste synthetic resin, etc., which have soil and foreign substances, without washing. The present invention relates to a waste synthetic resin recycling apparatus and method, and to molded articles and formwork produced therefrom.

According to industrial development, the amount of waste vinyl and synthetic resin generated every year is increasing rapidly, which is causing environmental pollution problem.

Such waste vinyl and waste synthetic resins prevent the early stabilization of landfill due to hard decomposability, and when incinerated, some heat energy can be used, but it causes a lot of economic loss, and also emits toxic gases such as dioxins, It is causing a problem.

Therefore, the recycling of waste vinyl and synthetic resins not only solves the environmental pollution problem of the country, but also has a significant impact on industrial development in that it is the recycling of resources in Korea, which lacks natural resources. In addition, the state is operating various support systems for recycling waste vinyl.

Here, the waste vinyl recycling method which is generally used now will be briefly described, and the problems thereof will be described as follows.

When the used vinyl used in farms or factories is collected and sent to a recycling plant, the used vinyl is put into a grinder and pulverized. Afterwards, foreign matters such as soil, etc., which are buried in the pulverized waste vinyl are removed, and the foreign matters in the waste vinyl are usually removed by using a cleaning device.

Next, the washed waste vinyl is dehydrated or dried, and then put into an extrusion apparatus to be molded into a resin material to produce various recycled resin products such as new synthetic resin products.

However, in the conventional waste vinyl recycling method as described above, in order to remove foreign matters such as soil in the waste vinyl, a separate washing process is performed, followed by dehydration and drying operations, and then extruded and molded to wash. And it takes a lot of drying time, not only the productivity is lowered but also the cost for recycling waste vinyl has a problem that the economy is inferior.

In addition, the recycled synthetic resin molded article produced by the conventional waste vinyl recycling method as described above is usually produced by extrusion molding only with a resin material in which waste vinyl is melted, so that the overall strength decreases. When added, not only the manufacturing process is complicated, but also the recycling cost increases, resulting in a problem of low economic efficiency.

On the other hand, when extruded and molded as it is in the state of the waste vinyl, the foreign material is exposed to the surface of the recycled molded product as it is, the surface of the molded product is rough, the product quality is not good, and the structure of the molded product is not dense, the center of the foreign material When the crack occurs, such as easily broken, there is a problem that the strength is significantly reduced.

The present invention has been made in order to solve the above problems, it is possible to easily recycle the waste resin that was not recycled by configuring to manufacture a synthetic resin molded by melting as it is without washing the foreign matter on the waste vinyl or waste synthetic resin, etc. It is an object of the present invention to provide a waste synthetic resin paper recycling apparatus and method, and molded articles and formwork produced therefrom.

In addition, the present invention, by forming a molding so that a large amount of foreign matter is present in the middle part of the molded article and there is almost no foreign matter in the outer skin, the outer surface is smooth and the strain of the product can be minimized, and also the strength is improved to improve the merchandise It is an additional object to provide a waste synthetic resin recycling apparatus and method, and the molded products and formwork produced through this.

The waste synthetic resin recycling apparatus according to the present invention for realizing the above object is to repeatedly extrude the molten synthetic resin (hereinafter referred to as 'melt resin') containing foreign matter introduced from the outside by using a reciprocating piston. An extrusion unit; A molding part connected to the extrusion part and continuously discharged after being molded into a specific shape while the molten resin extruded from the extrusion part passes; Cooling is configured to pass through the molding portion to quench the molten resin to be molded in the molding portion, supplying a cooling fluid so that the temperature for cooling the molten resin in the direction in which the molten resin is molded and discharged gradually lowers It is characterized by including the wealth.

In addition, the waste synthetic resin recycling apparatus according to the present invention for realizing the above object, the extrusion unit forcibly extruding the molten synthetic resin containing foreign matter introduced from the outside, and the molten resin extruded from the extrusion unit connected to the extrusion unit While passing through the molding portion is molded into a specific shape and discharged, and quenched to cure the molten resin extruded into the molding portion while passing through the molding portion, the molten resin in the direction in which the molten resin is molded and discharged It is composed of a cooling unit for supplying a cooling fluid so that the temperature to cool down gradually; When the synthetic resin molded product is molded while the molten resin is cured in the molded part, by the action of the extrusion part and the cooling part, the molten resin containing a relatively large amount of foreign matter is cured in the center of the molded product, and the outer part of the molded part is foreign matter. It is characterized in that it is configured to harden while the molten resin that contains little almost continuously penetrates.

Preferably, the extruded portion and the molded portion are provided with heater portions at both predetermined portions around the interconnected portions.

The extruder is preferably configured to extrude the molten resin using a reciprocating motion of a piston.

The extruder, an inlet is formed on one side and the extrusion hole is formed on the other side and the extrusion cylinder assembly for extruding the molten resin containing the foreign matter introduced into the inside, connected to the inlet side of the extrusion cylinder assembly to temporarily stop the molten resin It is preferable to comprise the resin storage device to store.

Preferably, the extrusion cylinder assembly includes an extrusion cylinder, an extrusion piston inserted into the extrusion cylinder to perform an extrusion operation, and a hydraulic cylinder device for reciprocating the extrusion piston.

At this time, the extrusion piston, the center piston provided in the center is installed so as to be buffered by a certain displacement section by the elasticity of the spring, while supporting the spring around the rear of the center piston and linearly moved by the hydraulic cylinder device The upper piston may be provided, and the lower piston may be configured to be caught by the center piston in a state spaced apart from the upper piston by a predetermined circumference around the front of the center piston.

 The extrusion cylinder assembly is preferably provided with an opening and closing portion to enable the air inlet to the extrusion port side.

At this time, the opening and closing portion is preferably made of a check valve structure so that the extrusion cylinder assembly is closed when the operation of extruding the molten resin, and opened when the molten resin is filled.

The resin storage device is connected to the inlet of the extrusion cylinder assembly, and the molten resin injecting portion is provided on one side and the storage reservoir in which the molten resin is stored therein, a pressure piston for pressing the molten resin in the reservoir and injected into the extrusion cylinder assembly; It is preferably configured to include a hydraulic cylinder device for operating it.

The molding part may be formed of an upper mold and a lower mold with a molding space therebetween, and the cooling part may be configured to pass through the upper mold and the lower mold, respectively.

The cooling unit is preferably configured to cool while the fluid flows in a zigzag or spiral manner to the mold forming the molding.

The outer side of the molding portion is preferably provided with an auxiliary cooling device for auxiliary cooling to the outer region of the cooling unit.

Next, the waste synthetic resin recycling method according to the present invention for realizing the above object comprises a first step of melting the waste vinyl or waste synthetic resin as it is in the state of foreign matter; A second step of injecting the molten synthetic resin including the foreign matter melted in the step into the extrusion unit; A third step of extruding the melt-synthetic resin containing the foreign matter injected into the extruder; When the melted synthetic resin containing the foreign matter extruded from the extruded part is quenched in the molding part and the molten synthetic resin first introduced is cooled and shrunk, the melted synthetic resin further extruded to the outside of the shrunken synthetic resin is continuously extruded, and the center of the molded article is It includes a relatively large amount of foreign matter, and the outer surface of the molded article is characterized in that it comprises a fourth step of extruding and molding so that the foreign matter is contained substantially.

In the third step, the extrusion unit is preferably extruded melt synthetic resin containing foreign matter through the reciprocating motion of the piston.

In the fourth step, the quenching temperature of the molding part is preferably set to be gradually down between 200 ° C and 10 ° C in the moving direction of the molten synthetic resin containing foreign matter, wherein the down temperature is 200 ° C-180 ° C- 160 ℃-150 ℃-120 ℃-100 ℃-80 ℃-70 ℃-65 ℃-60 ℃-55 ℃-50 ℃-50 ℃-35 ℃-30 ℃-25 ℃-20 ℃-15 ℃-10 ℃ It can be set to.

Next, the mold formed by using the waste synthetic resin according to the present invention for realizing the above object, in the form molded by the waste synthetic resin recycling apparatus, as a molded by curing the molten synthetic resin containing foreign matter, It consists of a three-layer structure in which the outer shell portion is integrally molded in both the central portion and the central portion, wherein the central portion has a relatively large amount of foreign matter, and the outer portion has a relatively small amount of foreign matter.

It is preferable that the said form | work is comprised integrally with the flat part and the protrusion part triangularly protruded in one direction from the both sides of this flat part.

Next, the molded article molded by using the waste synthetic resin according to the present invention for realizing the above object is molded by the waste synthetic resin recycling method, a three-layer structure in which the outer shell portion is integrally molded at both the central portion and the central portion. It is made of, the central portion is a relatively large amount of foreign matter, the outer portion is characterized in that the structure consisting of a relatively small amount of foreign matter.

The waste synthetic resin recycling apparatus and method according to the present invention, and the effects of the molded article and the form produced through the same will be described as follows.

The waste synthetic resin recycling apparatus and method according to the present invention can be easily recycled to recycle waste resins that could not be recycled since they can be melted as they are without washing the waste vinyl or waste synthetic resins into synthetic resins. There is an advantage to this.

For this reason, since the waste vinyl is melted and recycled as it is without washing, the regeneration process is simplified, and the economical efficiency of the recycled product is improved.

In addition, since the present invention is formed so that a large amount of foreign matter is present in the middle of the molded article and almost no foreign matter is present in the outer skin portion, the outer surface is considerably smooth, and the compressive strength of the product is improved, thereby improving the commercialization of the molded product. There is also an advantage.

That is, in the present invention, when the molten synthetic resin containing foreign matter is molded, the foreign matter such as soil is concentrated at the center side and cured, and the pure molten resin containing almost no foreign matter is continuously extruded and supplied to the portion forming the outer skin portion. As it is hardened while being hardened, the outer surface is smooth and the inner surface can be made of a high-strength synthetic resin molded article such as a reinforcement agent added by foreign matter, thereby maximizing the merchandise of the molded product.

In addition, the present invention is a high-strength having a low strain rate that the deformation and expansion, such as shrinkage and expansion hardly occurs after molding the product because the molded product is molded while being repeatedly cooled by the reciprocating motion of the extrusion piston while stepped down cooling while passing through the molded part. There is also an advantage that a molded article can be produced.

Molded articles and formwork produced by the present invention has the advantage that the appearance of the product is beautiful, the overall stiffness is improved, in particular, the structure is densely molded by the forced compression quenching method so that the deformation is rarely generated .

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

1 to 4 , a waste synthetic resin recycling apparatus according to an embodiment of the present invention will be described.

1 and 2 is a view of the pre-extrusion state of the waste synthetic resin paper recycling apparatus according to an embodiment of the present invention, Figure 1 is a side cross-sectional view of the regeneration device, Figure 2 is a plan view of the regeneration device.

3 and 4 are views of the extrusion operation state of the waste synthetic resin paper recycling apparatus according to an embodiment of the present invention, Figure 3 is a side cross-sectional view of the regeneration device, Figure 4 is a plan view of the regeneration device. .

Waste synthetic resin paper recycling apparatus according to an embodiment of the present invention is largely composed of the extrusion section 10, the molding section 30, the cooling section (50).

The extruder 10 is a portion configured to forcibly extrude the molten synthetic resin containing foreign matter introduced from the outside toward the molding unit 10.

Herein, the melt-synthetic resin containing the foreign substances injected into the extruder 10 is a resin obtained by melting farmhouse waste vinyl or industrial waste vinyl, which is melted through a waste vinyl heating melting apparatus in a state in which most foreign matters remain intact. Resin.

In this embodiment, the waste vinyl is mainly described as a raw material of the molten synthetic resin containing foreign substances, but is not necessarily limited thereto, and a general plastic synthetic resin material may be included as long as it is a material capable of forming the molten synthetic resin.

The waste vinyl or waste synthetic resin is melted, and the waste vinyl or waste synthetic resin is crushed to a predetermined size, and then put into a heating melting apparatus, and then changed into a molten state that can be manufactured into a new molded article. The method of supplying the part 10 is preferable. At this time, the waste vinyl or the discarded synthetic resin may be used by heating and melting the collected waste without necessarily grinding it to a predetermined size.

The configuration of the extrusion unit 10 into which the molten synthetic resin (hereinafter also referred to as 'melt resin') containing such foreign matter will be described in detail.

The extruded part 10 is composed of an extrusion cylinder assembly 11 and a resin storage device 21. First, the extrusion cylinder assembly 11 has an inlet 12a formed at one side (upper side in the drawing), and the other side ( Extrusion opening 12b is formed in the right side of the drawing, and is configured to extrude the molten resin introduced into the molding unit 30 through the resin storage device 21.

The extrusion cylinder assembly 11 is formed in the left and right long as shown in the extrusion cylinder 12 and the space formed to be extruded after the resin is filled therein, and inserted into the extrusion cylinder 12 linear reciprocating It consists of an extrusion piston 14 which allows the extrusion operation to be made while moving, and a first hydraulic cylinder device 16 which reciprocates the extrusion piston 14 at the rear of the extrusion piston 14.

 The inlet 12a and the outlet 12b are formed in the extrusion cylinder 12. The inlet 12a is formed at the upper center portion, and the extrusion port 12b is formed at the front side.

In addition, the extrusion opening 12b side of the extrusion cylinder 12 is provided with an opening and closing portion 18 for decompression, the opening and closing portion 18 is closed when the extrusion cylinder assembly 11 operates to extrude the resin It is a part configured to enable the extrusion operation toward the molding portion 30 and, on the contrary, to open the extrusion piston 14 smoothly while opening when the molten resin is filled into the extrusion cylinder 12. In general, it is preferable that it is configured as a check valve structure that opens and closes according to pressure changes.

That is, the opening and closing portion 18 is formed in the opening and closing housing 18a which is formed to penetrate the extrusion cylinder 12 through which a hole through which air can pass, and inserted into the opening and closing housing 18a. It is comprised by the opening-closing pin 18b which opens and closes and moves up and down according to the pressure change in the extrusion cylinder 12 in a state.

Such a structure of the opening / closing part 18 can be variously modified according to the implementation conditions, and can be configured to be opened and closed by an electronic control method by external control, if necessary.

The extrusion piston 14 is inserted to the rear of the extrusion cylinder 12 is configured to enable reciprocating movement, the front surface 14a is preferably formed in a concave shape in order to increase the effect of the extrusion operation as shown in FIG. In addition, it is preferable that the seal ring 14b is provided in the middle part in order to prevent the molten resin from leaking.

The first hydraulic cylinder device 16 is connected to the extrusion piston 14 in a state supported by the connecting support 17 at the rear of the extrusion cylinder 12 so as to reciprocate the extrusion piston 14. It is composed.

Here, the first hydraulic cylinder device 16 is preferably configured to be operated by hydraulic pressure or pneumatic pressure, but may be configured using a linear operating mechanism including a linear motor, if necessary.

Now, the resin reservoir 21 mounted on the top of the extrusion cylinder assembly 11 will be described.

The resin storage device 21 may be continuously connected to the inlet 12a of the extrusion cylinder assembly 11 in a substantially vertical direction to continuously supply molten resin to the extrusion cylinder assembly 11 while storing a predetermined amount of the melted resin. It is configured to be.

Such a resin storage device 21 includes a storage cylinder 22, a pressure piston 24 provided in the storage cylinder 22 and vertically moved, and a second hydraulic cylinder device 26.

The reservoir 22 is connected to the upper portion of the inlet 12a of the extrusion cylinder 12 in a substantially vertical direction, and is provided with a molten resin injector 28 on one side (the rear side in the drawing) and has a predetermined amount of molten resin therein. It is made to store temporarily.

The pressurized piston 24 is inserted inward from the upper portion of the reservoir 22 to change the internal volume of the reservoir 22 by the second hydraulic cylinder device 26 so that the molten resin is extruded from the cylinder 12. It is configured to be pressurized to be injected into the inside.

The second hydraulic cylinder device 26 is configured to operate the pressurized piston 24 in a state of being supported by the connecting support 27 to the reservoir 22. Of course, the 2nd hydraulic cylinder apparatus 26 can also be comprised using a linear actuation mechanism like the 1st hydraulic cylinder apparatus 16 mentioned above.

Such a resin storage device 21, when filling the molten resin into the extrusion cylinder 12, as shown in Figure 1 operates to lower the pressure piston 24, as shown in Figure 3 the extrusion cylinder ( When 12) is extruding the molten resin, the molten resin cannot be supplied into the extrusion cylinder 12, so that the molten resin is gradually stored in accordance with the amount of molten resin injected through the injection portion 28 on the side to store the molten resin. do.

Next, the molded part 30 to which a molded product is made while the molten resin extruded from the extruded part 10 will be described.

The molding part 30 is a component part which is connected to the extrusion hole 12b of the extrusion part 10 as described above and is cured after being molded into a specific shape while the molten resin extruded therein is introduced.

The molding unit 30 may be configured by dividing the upper mold 31 and the lower mold 33, and the molding space is formed to be formed long in the extrusion direction of the resin between the two mold (31, 33). desirable.

The molded article manufactured through the molding unit 30 will be described below with reference to FIGS. 7 to 18, and the heater unit 40 and the cooling unit 50 will be described below.

First, the heater part 40 is a component that prevents the molten resin filled into the extrusion part 10 and the molten resin extruded into the inlet of the molding part 30 from being cured, and keeps the molten state as it is. It is preferable that the extruded part 10 and the molding part 30 are installed at both predetermined portions with respect to the interconnected part.

The heater unit 40 may be configured to provide heat while the heating fluid flows, but it is preferable to use an electric heater that is easy to control the temperature.

Next, the cooling unit 50 is configured to pass through the inside of the molds 31 and 33 forming the molding unit 30 to quench the molten resin extruded from the extrusion unit 10 and supplied to the inside. It is configured to be.

At this time, the cooling unit 50 is configured to supply a cooling fluid such that the temperature for cooling the molten resin gradually decreases in a step in which the molten resin is discharged, as shown in FIGS. 2 and 4. The cooling flow path 55 constituting the 50 is configured such that a cooling water injection port 51 is located at the discharge port 30a side of the molded product, and a cooling water discharge port 53 is located at the side close to the heater unit 40.

In addition, the cooling passage 55 may be configured to cool the fluid while flowing in a zigzag or spiral manner in the mold forming the molding part 30, and the molding part 30 may be formed in the upper mold 31. ) And the lower mold 33, it is preferable to configure the cooling function through the cooling flow path 55 configured separately to the upper mold 31 and the lower mold 33.

In addition, it is preferable to use a fluid capable of cooling to 10 ° C. or less as the fluid passing through the cooling passage 55. Coolant made of ordinary water may be used, and a refrigerant used in a refrigeration cycle may be used if necessary. It is also possible. Apparatuses for cooling cooling fluids are generally well known and therefore description thereof is omitted.

The cooling unit 50 is a resin containing most of the foreign matter relative to the central portion (P1) of the synthetic resin molded product (P) when the molten resin is discharged into the molding unit 30 by the extrusion unit 10 The ash is cured, and the outer skin portion P2 of the synthetic resin molded article is an important component of the present invention, which acts to allow the resin material, which contains relatively little foreign matter, to be continuously penetrated and cured.

As a result, when the molten resin is molded in the molding unit 30 by the cooling unit 50 and the extrusion unit 10, the regeneration apparatus of the present invention hardens while concentrating foreign substances such as soil on the central portion P1. In addition, the part forming the outer skin part P2 is hardened by continuously supplying a pure molten resin that contains almost no foreign matter, so that the outer surface is smooth and a synthetic resin molded article P such as a reinforcing agent is introduced by the foreign material on the inner surface. It is configured to produce.

The formation principle of the synthetic resin molded article P according to the present invention will be described in detail below and will be omitted here.

Next, an auxiliary cooling device 60 is provided at the outer region of the cooling unit 50, that is, the outer side of the molding unit 30 to assist the cooling operation.

The auxiliary cooling device 60 plays an auxiliary role to smoothly perform the cooling operation of the cooling unit 50 in the state where the coolant is injected therein.

The waste synthetic resin recycling method of the present invention using the waste synthetic resin recycling apparatus according to the present invention configured as described above will be described with reference to FIGS. 1 to 4.

The waste synthetic resin recycling method according to the present invention is a method for producing a synthetic resin molded article by melting the waste plastic as it is, without washing farmhouse waste vinyl, industrial waste vinyl, waste synthetic resin, and the like.

At this time, the synthetic resin molded article P is produced, as described above, the outer skin portion P2 is smoothly formed by applying pure resin having almost no foreign matter, but the central portion P1 is molded to have a structure in which foreign matter and resin material are mixed.

The waste synthetic resin recycling method using such waste vinyl will be described in detail.

First, the waste vinyl or waste synthetic resin material is melted as it is with foreign matter.

Farm waste vinyl and industrial waste vinyl usually contain a lot of soil or foreign matter. The waste vinyl in this state is put into a heating melting apparatus without melting beforehand and melted. At this time, the heating melting apparatus needs to melt while stirring to distribute the molten resin and foreign matter evenly distributed.

In addition, although the waste vinyl or waste synthetic resin material can be melted as it is, it is also possible to grind or cut to an appropriate size if necessary.

In addition, when a large amount of foreign matter on the waste vinyl or waste synthetic resin material is more than necessary, it is also possible to add a degree of dusting without washing separately.

Next, the molten resin (hereinafter referred to as 'melt resin') containing the foreign matter melted through the above process is injected into the extruded part 10.

That is, the injection pump 28 is injected into the resin storage device 21 through the injection unit 28 of FIG. 1. In this case, the molten resin may be injected into the extrusion cylinder 12 immediately when the molten resin is filled into the extrusion cylinder 12 as shown in FIG. 1, and when the extrusion operation is performed in the extrusion cylinder 12 as shown in FIG. 3. The molten resin flows into the storage device 21 and is temporarily stored.

Here, the resin supply pressure injected from the heating melting device toward the resin storage device 21 is a pressure for supplying molten resin into the extrusion cylinder 12 from the second hydraulic cylinder device 26 of the resin storage device 21. In a larger setting, the molten resin is preferably set to be continuously supplied without countercurrent in the process of filling the extrusion cylinder 12 with the molten resin.

As shown in FIG. 1, the molten resin is filled in the extrusion cylinder while the extrusion piston 14 is backward. In the state in which the molten resin is stored in the reservoir 22 of the resin storage device 21 as shown in FIG. 3, FIG. As the pressure piston 24 is lowered as in the molten resin is injected into the extrusion cylinder 12 is filled. At the same time, since the molten resin is continuously supplied through the injection unit 28, the molten resin supplied at this time is directly introduced into the extrusion cylinder 12 and filled.

On the other hand, since the extrusion part 12 is configured with the heater part 40, the molten resin is continuously present in the molten state even after the molten resin is filled in the above manner.

Next, the molten resin injected into the extruded part 10 is pressed and extruded, and the molded part P is molded so that the pure resin is rapidly cooled step by step in the molding part 30 to form the outer skin part P2. .

As shown in FIG. 3, the extrusion piston 14 is forcibly repeated in the form of squeezing the molten resin filled in the extrusion cylinder 12 toward the forming part 30 through the extrusion hole 12b while advancing the extrusion piston 14. Extrude.

The molten resin introduced into the molding part 30 is rapidly cooled to a low temperature stepwise by the cooling unit 50, wherein the stepwise cooling temperature is 200 ℃-180 ℃-160 ℃-150 ℃-120 ℃-100 ℃ -80 ° C-70 ° C-65 ° C-60 ° C-55 ° C-50 ° C-50 ° C-35 ° C-30 ° C-25 ° C-20 ° C-15 ° C-10 ° C. Of course, the step-down cooling temperature can be changed and set according to the molding conditions.

Thus, when the molten resin is extruded into the molding portion 30, most foreign matters are collected in the central portion (P1), and the pure resin having almost no foreign matters forms the outer skin portion (P2), the reason for this will be described.

The molten resin injected by the extrusion method into the shaping | molding part 30 from the extrusion part 10 is quenched step by step by the said cooling part 50. FIG. Therefore, the resin on the outlet 30a side of the molding part 30 is pushed toward the outlet 30a in a state of being almost cured by a low temperature of about 25 ° C. to about 10 ° C. or lower. At the same time, the molten resin is gradually contracted while the molten resin is cooled in the molding part 30, and a certain gap is formed between the inner surfaces of the molds 31 and 33 forming the molding part 30 and the resin material gradually contracting. The part 30 is moved while pushing outward.

In such a state, when the molten resin is further repeatedly extruded in the extruded part 10, between the molds 31 and 33 of the molding part 30 and the contracted resin material (which forms a central part P1). As the gap between the new melt resin penetrates and fills the gap, most of the foreign matter is filtered out by the narrow gap, and pure molten resin that contains little foreign matter penetrates continuously and is continuously injected, and outside the molding part 30. It is hardened by the cooling part 50 while moving to form an outer skin part P2.

In addition, the pure molten resin forming the outer skin P2 of the molded product P is continuously pressurized by the pressure of the extruded part 10 and supplied to the central part P1 by step-down cooling. Since it is similar or slightly delayed cooling, it is formed to have sufficient rigidity by cooling to the whole integral structure.

As a result, the synthetic resin molded article P according to the present invention, which is formed through the above-mentioned forced extrusion molding and quenching molding process, is composed of a resin material containing foreign substances inside, that is, the center portion P1, and that is, the outer skin portion ( Since P2) is covered with a pure resin as a coating, the outer surface is smooth, but the synthetic resin containing foreign substances therein forms a central portion (P1) to form a product having sufficient strength.

In addition, the synthetic resin molded article (P) according to the present invention shrinks down after forming the product because it is molded while being repeatedly cooled by the reciprocating motion of the extrusion piston 14 of the extrusion unit 10 while being cooled down step by step while passing through the molding unit 30 And it becomes possible to manufacture a high-strength molded article having a low strain rate hardly generated such as expansion.

The molded article produced using the regeneration apparatus and method according to the present invention will be described again below.

Finally, the molded product discharged from the molding unit 30 through the above process is cut to the desired length to be stored or shipped.

Molded article (P) according to the invention produced through the above process can be confirmed through a picture of the actual molded article attached .

That is, FIGS. 5A to 5C are photographs of actual dies molded using the reproducing apparatus and method according to the present invention.

Figure 5a is a product photograph showing the side of the formwork, Figure 5b is an enlarged photograph showing the detail "A" of Figure 5a, Figure 5c is a photograph showing the outer surface of the formwork.

As shown in FIGS. 5A and 5B, when the formwork is formed using the regeneration apparatus according to the present invention, the formwork P 'is formed to have a triple structure, and the central portion P1 may contain most foreign matters. It is possible to confirm that a stratum layer exists, and both outer skin portions P2 have a pure resin layer containing almost no foreign matter.

In addition, in Figure 5c it can be seen that the surface of the formwork is formed to be quite smooth even if melted and unwashed vinyl and the like.

Meanwhile, FIG. 6 illustrates another embodiment of the waste synthetic resin recycling apparatus, which has a similar basic principle to the waste synthetic resin recycling apparatus shown in FIGS . 1 to 4 but differs in overall structure. Another embodiment of the present invention will be described with reference to FIG. 6.

6 is a block diagram showing a waste synthetic resin recycling apparatus according to another embodiment of the present invention.

As illustrated in FIG. 6, the waste synthetic resin recycling apparatus according to another embodiment of the present invention has the same configuration as that of the embodiment of the present invention described above.

That is, the injection unit 10, the injection unit 28, the resin storage device 21, the extrusion cylinder assembly 11, and the molding unit 30 is connected to the lower end of the extrusion unit 10 to produce a synthetic resin molded product ) And a cooling unit 50 provided in the molding unit 30.

However, in another embodiment of the present invention, the extrusion cylinder assembly 11 is disposed vertically, and the difference in that the auxiliary cooling device 60 'of the water reservoir structure is configured below the molding unit 30 is partially different.

In addition, the resin reservoir 21 is also not connected directly to the extrusion cylinder assembly 11, but is connected to the injection portion 28 is also different in viscosity.

Herein, a configuration of another embodiment of the present invention will be described schematically with a configuration different from that of one embodiment of the present invention.

The resin reservoir 21 is located perpendicular to the injection portion 28.

The extrusion cylinder assembly 11 is arranged in a vertical configuration, in which the extrusion piston 14 is divided into three sets.

The extrusion piston 14 is configured to be able to change the pressure to some extent according to the pressure state in the extrusion cylinder 12, so that the center piston 14a of the center can be buffered by a certain displacement section by the elasticity of the spring 15 And an upper piston 14b which is indirectly connected to the hydraulic cylinder 26 'and moves linearly around the rear of the center piston 14a, and is moved around the front of the center piston 14a. The lower piston 14c is provided such that the lower end portion is caught by the center piston 14a in a state spaced apart from each other.

In addition, the upper piston 14b and the lower piston 14c may be coupled to each other to allow relative movement around the center piston 14a, and a molten resin may flow between the lower piston 14c and the center piston 14a. It is made to have a passage.

In addition, an air outlet (not shown) connected to the outside is formed at the center of the center piston 14a, which is configured to open when the center piston 14a is raised to fill the molten resin therein.

In addition, the upper piston 14b may be configured to be connected to the hydraulic cylinder 26 'by a pivot arm 27' so as to receive an operating force of the hydraulic cylinder. Of course, the hydraulic cylinder 26 ′ may be configured by directly connecting the extrusion cylinder assembly 11 in a straight line as in the embodiment of the present invention.

Next, the molding unit 30 is different from the above-described embodiment only the position of the vertical horizontal, etc. The internal structure can be configured to vary depending on the molded product to be molded, the shape of the mold forming the molding unit 30 The cooling unit 50 may be configured by forming a cooling passage therein.

Meanwhile, an auxiliary cooling device 60 'is formed at the lower end of the molding part 30, and the auxiliary cooling device 60' may be completely cured while the molded product discharged from the molding part 30 is discharged into water. As a part to make it possible, it can be comprised with the cooling water container 61 and the impeller apparatus 65 which forcibly flows the cooling water stored in this cooling water container.

The impeller device 65 is rotated by the drive motor 66, it can be configured to change its position by the hydraulic cylinder 67 installed in the horizontal direction.

The waste synthetic resin recycling apparatus of another embodiment of the present invention as described above will also produce a synthetic resin molded article by the same method and operation as in the above-described embodiment of the present invention, and detailed description thereof will be omitted.

However, in another embodiment of the present invention, the extrusion piston 14 constituting the extrusion cylinder assembly 11 is configured to be capable of absorbing displacement to some extent to maintain the extrusion pressure of the molten resin to maintain the molding degree of the molded article. It can be improved.

Next, a molded article produced using the waste vinyl recycling apparatus and method according to the present invention as described above will be described.

Molded article (P) that can be produced using the regeneration device of the present invention is a molten angle, corner or rim wood used as acid angle, reinforcement or edging used for formwork, support or prop used in construction sites, etc. And earthen boards used for hill climbing angles, soil protection or ground support. Of course, in addition to the construction site can be produced a variety of molded products.

Among them, the formwork according to the present invention produced by the reproducing apparatus and method of the present invention will be described in detail.

Figure 7 is a perspective view of the formwork produced in accordance with the present invention, Figures 8a to 8d is a view showing a conventional formwork compared to the formwork of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A form of the present invention will be described with reference to the drawings.

The formwork 100 according to the present invention includes a flat portion 101 formed as shown in FIG. 7, and a protrusion 103 protruding in a triangular structure at both ends of the flat portion 101.

At this time, the flat portion 101 and the protrusion 103 is manufactured in one piece.

That is, the formwork 100 of the present invention is produced by extruding using the waste synthetic resin recycling apparatus and method according to the present invention described above. At this time, since the formwork 100 which is a molded article is continuously discharged from the waste synthetic resin recycling apparatus of the present invention, it may be used by cutting to a suitable length.

The action and effects of the formwork 100 according to the present invention is molded and manufactured as described above.

Conventional formwork (1) is a triangular joint (also referred to as a 'membrane') (5) made of a synthetic resin material at both ends of the coated plywood 3, as shown in Figure 8a and 8b using a fixed nail (7) It is made by attaching.

Such a conventional formwork (1) has to be manufactured by separately manufacturing the coated plywood (3) and the triangular joint (5) using a fixing nail (7), the process of manufacturing the formwork (1) is complicated, work maneuver There are a lot of problems that productivity also falls.

In addition, since the triangular joint 5 is separately fixed to the coated plywood 3 as shown in FIG. 8C, a gap is generated between the coated plywood 3 and the triangular joint 5 before or during construction. When it occurs, the cement, which is a concrete material, protrudes between the gaps, and then hardens. Therefore, a complicated problem arises in that the projected portion must be polished and removed after construction.

In addition, after construction, the nail 7 for fixing the coated plywood 3 and the triangular joint 5 easily detached or used for a long time, there is a problem that needs to be rusted and replaced again.

In addition, in the process of installing the mold structure for concrete construction, as shown in Figure 8d there is also an uncomfortable problem of applying oil to the surface of the formwork (1) in order to peel off smoothly after construction.

However, the formwork 100 according to the present invention can be easily produced as a single material through a single extrusion process using the waste synthetic resin paper recycling apparatus according to the present invention, and also the length of the formwork 100 is cut as necessary. Since it can be used, the productivity of the bubble house can be greatly improved, as well as can be produced unlimitedly by diversifying the length specifications, so that the construction can be performed without a joint portion, and efficient construction work is possible.

In addition, the formwork 100 of the present invention by using the waste plastic to produce the flat portion 101 and the protrusion 103 in an integrated structure as a whole product is solid, there is no separate assembly process, manufacturing and construction can also be made easily Will be.

In addition, since the formwork 100 of the present invention is made of an integral structure, there is no gap, so that after the construction, the projected concrete becomes smooth without forming unwanted protrusions, and thus additional work of polishing the protrusions is required. Of course, it is possible to improve the appearance of the concrete structure.

In addition, since the formwork 100 of the present invention is a synthetic resin molded product containing HDPE (high-density polyethylene) as a main component even without applying an additional oil, since the original oily component of HDPE does not stick cement after construction, it smoothly peels off. Not only the appearance of the concrete structure is beautiful but also the demolition work after construction can be performed smoothly.

In particular, the formwork 100 of the present invention, despite being molded by melting in the state containing the foreign matter as described above, because the outer surface roughness is very low to form a smooth, not only beautiful appearance, forced extrusion and cooling, and As foreign materials are mixed inside as the reinforcing agent is added, the product has excellent rigidity and the lowest strain rate. This will be described in detail with reference to FIG. 9.

9 is a view for explaining the durability against deformation of the formwork 100 according to the present invention. (a) is a view showing the formwork 100 of the present invention, (b) is a side view for explaining the deformation state after formwork in the case of not a forced extrusion method.

Formwork 100 according to the present invention is formed by the forced extrusion molding and forced cooling method through the waste synthetic resin paper recycling apparatus described above, so that deformation does not occur on the surface and the edge portion.

That is, as shown in Figure 9 when the formwork 100 according to the present invention is molded through the waste synthetic resin recycling apparatus of the present invention, while being cooled in a step-down cooling method, and repeatedly forced extrusion molding, in the molding process Since the tissue is compactly formed, the problem that the volume of the corner portion or the like shrinks after molding the product hardly occurs.

On the other hand, in the case of the forced extrusion method, there is a problem that the corner portion of the formwork 100 shrinks inward as shown in FIG. In other words, the outer surface is formed by the A line at the time of initial molding, but shrinks due to external temperature change over time, so that the strength of the form 100 is reduced and the concrete structure formed by the formwork 100 is used. The shape will not be made properly.

As a result, the formwork 100 according to the present invention is formed with a synthetic resin layer containing a foreign matter such as soil therein at the time of molding, and forms a smooth outer skin having almost no foreign matter on the outer surface, the appearance of the product is beautiful In addition, the overall rigidity is improved, and since the tissue is compactly formed by the forced compression quenching method, the deformation is hardly generated.

The construction state of the concrete structure using the formwork 100 of the present invention will be described with reference to FIGS. 10 and 11.

Figure 10 is a planar cross-sectional view showing a state of use of the formwork 100 produced in accordance with the present invention, in order to construct a concrete structure, to form the formwork 100 of the present invention on both sides in the vertical direction of the figure, plywood or The composite plate 8 is squeezed out, and the state in which the euroform 9 is supported on four sides on the outer surfaces of the formwork 100 and the composite plate 8 is shown. After the concrete is poured into the formwork 100, and then cured, and remove the formwork 100, etc., a concrete structure (C) having an appearance as shown in Figure 11 is made.

On the other hand, Figure 12 is a view showing a state in which the concrete structure (C ') is formed using the formwork of the prior art, the conventional formwork is limited in the overall length, as shown in the middle of the joint layer and the concrete structure as shown in the figure Since refraction occurs and protrusions are formed due to gaps at edges, grinding work must be performed to remove the formwork and to remove the joint layer and the protrusions.

However, the formwork 100 of the present invention as described above can be produced according to the size of the concrete structure by extrusion molding, so even if the length of the concrete structure does not form a joint layer in the middle, and also the corner portion Since the back gap does not occur, the protruding portion does not occur even after the formwork 100 is removed, so that no additional work is required, and the construction of the concrete structure may be neat.

Next, in addition to the formwork 100 of the present invention having the characteristics as described above by the waste synthetic resin recycling apparatus and method according to the invention it is possible to produce the molded article as follows.

FIG. 13 is a view showing an acid angle 110 used as a support or support, and FIG. 14 is a view showing a state in which an acid angle 110 shown in FIG. 13 is used.

FIG. 15 is a view showing the inverted angle 120 used as a reinforcement or a lumber, etc. FIG. 16 is a view showing a hill climb angle 130 (also referred to as an “obi”) used as a corner or a rim. .

FIG. 17 is a view showing the earth plate 140 used for soil prevention or ground support, and FIG. 18 is a view showing the use state of the earth plate 140 shown in FIG. 17 at the time of earth wall construction.

Various molded articles according to the present invention as shown in Figures 13 to 18, can be molded from construction, civil engineering, woodworking materials, the molded article of the present invention is a continuous continuous molding integrally by forced cooling extrusion method, It can be produced without significant limitations, and the seam portion can be minimized.

In addition, the molded article of the present invention can manufacture a variety of shapes, such as triangles, squares, pentagons, etc., which are difficult to manufacture from wood or other materials, depending on the shape of the mold part of the molding part, and by forming a three-dimensional combination strength of a trust structure such as a triangle inside Since it can be configured in various ways, torsion, refraction, cutting phenomenon, etc. can be minimized as a whole, and load and tensile strength can be increased.

1 and 2 is a view of the pre-extrusion state of the waste synthetic resin paper recycling apparatus according to an embodiment of the present invention,

1 is a side cross-sectional view of a playback device;

2 is a plan view of the playback apparatus.

3 and 4 are views of the extrusion operation of the waste synthetic resin paper recycling apparatus according to an embodiment of the present invention,

3 is a side cross-sectional configuration diagram of a playback apparatus;

4 is a plan view of the playback apparatus.

5a to 5c are photographs showing the formwork produced using waste-containing resin paper according to the present invention,

Figure 5a is a side view showing a formwork,

5B is an enlarged view of a portion “A” of FIG. 5A;

5C is an enlarged view of the surface seen from the portion “B” of FIG. 5A.

6 is a block diagram showing a waste synthetic resin recycling apparatus according to another embodiment of the present invention.

7 is a perspective view showing a formwork manufactured using the waste synthetic resin paper recycling apparatus and method of the present invention,

8a to 8d are views showing a conventional formwork compared to the formwork of the present invention.

9 is a view for explaining the durability of the formwork according to the present invention.

10 is a plan sectional view showing a state of use of the formwork produced according to the present invention,

11 is a plan sectional view showing a concrete structure constructed by the present invention.

12 is a view showing a state in which a concrete structure is constructed using the formwork of the prior art.

13 to 18 is a view showing a molded article produced by the present invention and some use state diagram,

13 is a view showing the acid angle used for the support or support, etc.,

14 is a view showing a state in which the acid angle shown in FIG. 13 is used;

15 is a view showing the molars angle used as reinforcement or rim,

16 is a view showing a climbing angle used as a corner or a rim,

17 is a view showing the earth plate used for preventing the earth or ground support, etc.

18 is a view showing a state of use of the earth plate shown in FIG. 17 at the time of earth wall construction.

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

10: extrusion part 11: extrusion cylinder assembly

12: extrusion cylinder 14: extrusion piston

16: first hydraulic cylinder device 18: opening and closing portion

21: resin storage device 22: reservoir

24 pressurized piston 26 second hydraulic cylinder device

30: molding part 31, 33: mold

40: heater part 50: cooling part

55: cooling passage 60: auxiliary cooling device

100: die 101: flat portion

103: protrusion P: molded product

110: acid angle 120: decay angle

130: mountain climbing angle 140: earth plate

Claims (2)

An extrusion unit forcibly extruding the molten synthetic resin (hereinafter referred to as 'melt resin') containing foreign substances introduced from the outside by using a reciprocating piston; A molding part connected to the extrusion part and continuously discharged after being molded into a specific shape while the molten resin extruded from the extrusion part passes; Cooling is configured to pass through the molding portion to quench the molten resin to be molded in the molding portion, supplying a cooling fluid so that the temperature for cooling the molten resin in the direction in which the molten resin is molded and discharged gradually lowers Waste synthetic resin paper recycling apparatus comprising a. It is molded by the waste synthetic resin recycling apparatus of claim 1, and has a three-layer structure in which the outer shell is integrally molded at both the central portion and the central portion, and the central portion has a relatively large amount of foreign matter, and the outer portion is relatively Molded article molded using waste synthetic resin, characterized in that the structure consists of less foreign matter.

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