KR100873610B1 - Apparatus for recycling the scrapped plastics - Google Patents

Abstract

The present invention relates to a plastic scrap recycling mixing device.

The present invention relates to a plastic scrap recycling and mixing device for regenerating scrap generated during production of a product using a molding machine, mixing the raw material with a raw material, and supplying it to a molding machine. Conveying means for generating a driving force for transporting the raw material, regenerated raw material storage tank for storing the regenerated raw materials conveyed by the drive of the conveying means, virgin raw material storage tank for storing the virgin raw materials, virgin raw material storage tank and regenerated raw material storage tank A selector for sucking the virgin raw materials and recycled raw materials from the raw materials and supplying them at an appropriate mixing ratio, a raw material mixing hopper for storing and mixing the virgin raw materials and the recycled raw materials supplied from the selector, and a main feed pipe for transferring virgin raw materials and recycled raw materials It includes.

Therefore, as the supply of recycled raw materials is fully automated, productivity can be improved, and the loss of recycled raw materials can be prevented during the transfer process. And there is an effect that can improve the production yield.

Plastic, scrap, recycling, mixing, extrusion, injection, molding

Description

Plastic Scrap Recycling Mixer {APPARATUS FOR RECYCLING THE SCRAPPED PLASTICS}

1 is a view for explaining a conventional plastic scrap recycling method,

Figure 2 is a block diagram showing a plastic scrap recycling mixing apparatus according to the present invention.

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

100: raw material mixing hopper 102: stirring means

200: molding machine 210: raw material input hopper

212a: upper limit sensor 212b: lower limit sensor

300: grinding hopper 400: blower

500: recycled raw material storage tank 600: virgin raw material storage tank

700: selector 702a, 702b: inlet

800: main feed pipe 900: valve means

1000: direct transfer piping 1100: control panel

p: product s: scrap

The present invention relates to a plastic scrap recycling and mixing device for recovering and supplying a scrap (side) generated in the event of plastic extrusion or injection molded product and mixed with the virgin raw material, more specifically, to optimize the virgin and recycled raw materials The present invention relates to a plastic scrap recycling and mixing device capable of improving quality and production yield by uniformly mixing and supplying a mixing ratio, and improving productivity by fully automating the supply of virgin raw materials.

In general, when an extrusion molding or injection molding for producing a plastic product having a predetermined shape using a plastic raw material, that is, a molded article, scraps containing incidental products are incidentally included with the product. In addition, by crushing the generated scrap and mixed with the virgin raw material and re-injected, it is possible to reduce the raw material cost and achieve the waste disposal purpose.

1 is a view for explaining a conventional plastic scrap recycling method.

The molding machine 20 of the extrusion or injection method produces a certain product p using a plastic raw material stored in the raw material hopper 22, in which the scrap containing the defective product together with the product p. (s) occurs about 10-15%.

Here, in the case where the molding machine 20 is an extruder, the plastic raw material is a pellet or powder-shaped fine particles, and the extruder melts and compresses the granulated plastic raw material by screw rotation or the like to die. The product (p) is continuously produced by pushing through the die. Of course, the product (p) discharged from the extruder is then cooled, cut and then subjected to a good / bad screening process.

Initially, the virgin raw material is stored in the raw material storage tank 10 and then supplied into the raw material input hopper 22 on the molding machine 20 side.

Then, the generated scrap (s) is collected by the operator and put into the grinder 30, the recycled raw material, which is a finely divided crushed by the grinding is transferred by hand and supplied into the raw material storage tank (10).

Therefore, the virgin raw materials and the regenerated raw materials in the raw material storage tank 10 are then supplied into the raw material input hopper 22 on the molding machine 20 side.

However, the above conventional scrap recycling method has the following problems.

First, the scrap (s) is put into the grinder 30, and when the pulverization is completed, take out the grinder 30 to move to the raw material storage tank 10 by the manual labor of the operator, labor is required, production efficiency There is a problem of this deterioration.

Second, there is a problem that the recycled raw material is partially lost in the process of manually transporting the scrap (s).

Third, as the virgin raw materials and the recycled raw materials are arbitrarily mixed and supplied without the concept of quantitative mixing ratio, there is a problem of lowering the physical properties (for example, strength) of the product p produced.

That is, since the recycled raw material has been molded once, its physical properties are different from those of the virgin raw material. Therefore, if the recycled raw materials are not mixed in an appropriate amount, the physical properties of the produced product (p) are deteriorated, causing quality degradation.

Fourth, since the raw material and the regenerated raw material is supplied to the raw material input hopper 22 without being mixed in the raw material storage tank 10, there is a problem in that the physical property difference between the produced product (p) is generated, causing defects. have.

The present invention was devised to solve the above problems, and it is possible to uniformly mix the virgin raw materials and recycled raw materials at an optimal mixing ratio, and to provide a plastic scrap recycling mixing device capable of fully automating the supply of recycled raw materials. The purpose is to provide.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Plastic scrap regeneration mixing device of the present invention for achieving the above object is a plastic scrap regeneration mixing device for reproducing the scrap generated during the manufacture of the product using a molding machine, mixed with the virgin raw material and supplied to the molding machine, receiving the scrap A grinding hopper for grinding, a transfer means for generating a driving force for transferring the recycled raw materials pulverized in the grinding hopper, a regenerated raw material storage tank for storing the regenerated raw materials transported by the driving means, and a virgin raw material for storing virgin raw materials Raw material mixing hopper which sucks and feeds virgin raw materials and recycled raw materials from storage tank, virgin raw material storage tank and recycled raw material storage tank and supplies them at proper mixing ratio, and raw and recycled raw materials supplied from selector And a main feed pipe for the transfer of virgin and regenerated materials.

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

Extrusion or injection molding machine (200) produces a product (p) using the plastic raw material supplied in the raw material input hopper 210, wherein the scrap (s) containing the defective product together with the product (p) is generated do.

Therefore, a plastic scrap regeneration mixing device is provided for regrinding the generated scrap s so as to be atomized and mixed with the virgin raw material.

Figure 2 is a block diagram showing a plastic scrap recycling mixing apparatus according to the present invention.

Plastic scrap regeneration mixing device according to the present invention, the transfer means for generating a driving force for transferring the regenerated raw material that is the crushed pulverized crushed in the grinding hopper 300, the input crushing the generated scrap (s) And a regenerated raw material storage tank 500 for storing regenerated raw materials transported by the driving means, a virgin raw material storage tank 600 for storing virgin raw materials, a virgin raw material storage tank 600 and a regenerated raw material storage tank A selector 700 for sucking the virgin raw materials and the regenerated raw materials from the 500 and supplying them to a proper mixing ratio, and storing and mixing the virgin raw materials and the recycled raw materials supplied from the selector 700 and then molding the 200 Raw material mixing hopper 100 to be supplied to the side), and the main feed pipe (800) for transferring the regeneration raw materials and virgin raw materials.

Grinding hopper 300 is provided with a grinding blade that is rotated therein, by uniformly crushing the scrap (s) introduced into the rotation of the grinding blade to make a predetermined size of atomized recycled raw material.

The conveying means generates a driving force for automatically transferring the pulverized regenerated raw materials in the grinding hopper 300, preferably a fan provided on the main feed pipe 800 in the rear position of the grinding hopper 300 The fan may be rotated to take out the recycled raw material from the grinding hopper 300 to be implemented as a blower (blower) 400 to be transported air.

The regenerated raw material storage tank 500 stores the regenerated raw material transferred from the grinding hopper 300 therein, and maintains the regenerated raw material for a predetermined time to cool the inside.

The virgin raw material storage tank 600 stores the virgin raw material therein.

The selector 700 sequentially generates suction power for the virgin raw material storage tank 600 and the recycled raw material tank 500 to take out and supply the virgin raw material and the recycled raw material by a predetermined amount, and adjusts the suction power generation time to control the virgin raw material and the regeneration. Ensure that the raw material is supplied at the optimum feed rate.

To this end, the selector 700 is the opening and closing means for selectively opening and closing the inlet (702a, 702b), and the inlet (702a, 702b) which are in communication with the virgin raw material storage tank 600 and the regeneration material storage tank 500, respectively. (Not shown) and suction means (not shown) for generating a suction force for a predetermined time with respect to the inlet port 702a or 702b communicated with each other.

As an example, when the optimal mixing ratio of the virgin raw material to the recycled material is 3 to 1 for optimally realizing the physical properties of the product (p), the selector 700 first communicates with the inlet connected to the recycled raw material storage tank 500. Communication to 702b is realized and the regeneration raw material is supplied by suction for 10 seconds, the inlet 702b is closed, and then communication to the inlet 702a communicated to the virgin raw material storage tank 600 side. In this case, by supplying the virgin raw material by inhaling 30 times, which is three times, the optimum supply ratio can be realized.

The raw material mixing hopper 100 stores the virgin raw materials and the regenerated raw materials supplied from the selector 700 and stirs them uniformly, and includes a stirring means 102 therein for the stirring and mixing. 102 may be implemented with a stirring blade rotated.

In addition, the raw material mixing hopper 100 may be provided with a heating means (not shown) for removing the moisture component contained in the raw material by heating and drying the raw material stored therein, the heating means is preferably hot air inside It can be implemented by supplying the.

In this way, by drying the mixed raw material through the heating means, it is possible to prevent the formation of unnecessary foam holes in the product (p) produced by the contained moisture component.

In addition, the mixed raw material mixed in the raw material mixing hopper 100 is then supplied to the raw material input hopper 210 of the molding machine 200 side, the supply may be implemented by a drop-type supply or air flow transport supply.

In addition, a control panel 1100 may be further provided to control operation of the above components and to input a command of an operator.

And, the raw material input hopper 210 of the molding machine 200 side is provided with a storage amount detection means for detecting the storage amount of the raw material stored therein, the upper and lower limit sensors (limit sensor) as the storage amount detection means 212a and 212b may be employed.

Therefore, when the storage amount is exhausted, the lower limit sensor 212b detects and sends a signal to the control panel 1100, thereby controlling the mixed raw material from the raw material mixing hopper 100 to the raw material input hopper 210 under the control of the control panel 1100. Is supplied and stored, and when the storage amount reaches the upper limit according to the storage, the upper limit sensor 212a detects and sends a signal to the control panel 100 so that the raw material mixing hopper 100 is controlled by the control panel 1100. Supply of the mixed raw material to the raw material input hopper 210 is stopped.

In addition, a direct connection pipe 1000 may be further provided to directly transfer the regeneration material from the grinding hopper 300 to the raw material input hopper 210, and the direct connection pipe 1000 may not be cooled and may be in a high temperature state. The recycled raw material can be immediately transferred to the raw material input hopper 210.

As such, when the direct feed pipe 1000 is additionally provided, the main feed pipe 800 is blocked at the time when the recycled raw material is transferred through the direct feed pipe 1000, and on the contrary, through the main feed pipe 800. A valve means 900 may also be provided to shut off the direct transfer piping 1000 at the time of transfer.

Hereinafter, an operation example of the plastic scrap regeneration mixing device according to the present invention having the above configuration will be described.

First, in the normal case, the virgin raw material is supplied from the virgin raw material storage tank 600 to the raw material input hopper 210 through the selector 700 and the raw material mixing hopper 100, and the molding machine 200 uses the virgin raw material. Produce product (p).

According to the production of such a product (p) is generated along with the product (p) in addition to the scrap (s) containing the defective, when the appropriate amount of scrap (s), the worker collects the collected scrap (s) in the grinding hopper ( 300 and the grinding hopper 300 is operated by operating the control panel 1100 and the like.

Accordingly, the grinding hopper 300 to rotate the grinding blade therein to grind the scrap (s) introduced to make the atomized recycled material of a certain size, preferably to have a size and shape similar to the virgin raw material.

Then, when such a grinding process is completed, the operation of the grinding hopper 300 is stopped, and then the blower 400, which is a conveying means, is operated to suck the regenerated raw material in the grinding hopper 300 to close the main feed pipe 800. Transport through the air stream.

Therefore, the regenerated raw material transported by the air is transferred to the regenerated raw material storage tank 500 and stored.

In addition, the regenerated raw material stored in the regenerated raw material storage tank 500 may be cooled by being kept as it is for a predetermined time in a stored state, and the cooling at this time may be a high temperature of the scrap s just discharged from the molding machine 200, Cool the recycled raw material which can be heated in the grinding process.

Of course, the cooling process may be omitted.

Subsequently, the selector 700 is operated according to the operation control of the control panel 1100, and the selector 700 first sucks a predetermined amount of virgin raw material from the virgin raw material storage tank 600 for a predetermined time and then mixes the raw material hopper 100. Then, this time, a small amount of regenerated raw material is sucked from the regenerated raw material storage tank 500 for a predetermined time and supplied to the raw material mixing hopper 100.

That is, the selector 700 adjusts and supplies the virgin raw material and the regenerated raw material at the optimum feed ratio. For example, when the optimal feed ratio of the virgin raw material to the recycled raw material is 3 to 1, the suction time of the virgin raw material is the suction time of the raw raw material. We can carry out for three times as long as.

Of course, the virgin raw materials and the regenerated raw materials are sequentially sucked and supplied, but the supply order may be implemented differently, and supply of any one raw material may be omitted.

At this time, when the operator inputs the optimum supply ratio on the control panel 1100 in advance, the control panel 1100 can perform the operation control on the selector 700 to implement the input optimal supply ratio.

As a result, the virgin raw materials and the regenerated raw materials are quantitatively supplied according to the optimum feed ratio and stored in the raw material mixing hopper 100.

Next, the stirring means 102 provided in the raw material mixing hopper 100 is operated to uniformly mix the stored virgin raw material and the recycled raw material, and at the same time, the heating means provided is operated to dry the raw materials therein.

That is, the stirring means 102 may mix the stored raw materials through the rotation of the stirring blade, and the heating means may heat-dry the raw materials by introducing hot air into the inside.

As a result, in the raw material mixing hopper 100, a mixed material to be used for manufacturing the product p is prepared and waited.

Thereafter, the raw material stored in the raw material input hopper 210 on the molding machine 200 side is gradually exhausted according to the manufacture of the product p, and the control panel 1100 at the time when the lower limit sensor 212b detects the lower limit of the storage amount. According to the control of the operation of the mixed raw material in the raw material mixing hopper 100 is supplied to the raw material input hopper 210, the supply is stopped when the upper limit sensor 212a detects the upper limit of the storage amount in accordance with the supply.

On the other hand, if necessary, the recycled raw material from the grinding hopper 300 can be directly supplied to the raw material input hopper 210, in this case, the main feed pipe (800) side is closed by the valve means 900 and the direct transfer pipe The open side of the 1000 may be directly supplied to the raw material input hopper 210 of the molding machine 200 in the form of a direct transfer pipe 1000 in which the recycled raw material transported in the air flows in accordance with the operation of the blower 400. .

As such, selecting to supply the recycled raw material through the main feed pipe 800 or through the direct feed pipe 1000 may be selected according to the type and property of the plastic raw material and the type and property of the produced product p. In other words, if the physical properties of the product (p) to be produced may be superior to supply through the direct transfer pipe (1000).

Of course, the overall operation as described above is automatically carried out by the control of the control panel 1100.

In the foregoing description, it should be understood that those skilled in the art can make modifications and changes to the present invention without changing the gist of the present invention as merely illustrative of a preferred embodiment of the present invention.

According to the present invention, as the supply of recycled raw materials is fully automated, productivity can be improved, and the loss of recycled raw materials can be prevented during the transfer process, and the virgin raw materials and recycled raw materials are uniformly mixed and supplied at an optimal mixing ratio, thereby being produced. The effect of improving product quality and production yield can be achieved.

Claims (13)

A plastic scrap recycling and mixing device for recycling scrap generated during the manufacture of a product using a molding machine and mixing the raw material with raw materials and feeding the scrap to the molding machine. Grinding hopper to receive and scrap the scrap, Transfer means for generating a driving force for transferring the regenerated raw material pulverized in the grinding hopper; A regeneration raw material storage tank for storing the regenerated raw material transported by the driving means; A virgin raw material storage tank for storing virgin raw materials, A selector for sucking the virgin raw material and the regenerated raw material from the virgin raw material storage tank and the regenerated raw material storage tank, respectively, and supplying them to be mixed with each other; A raw material mixing hopper for storing and mixing the virgin raw material and the recycled raw material supplied from the selector; A main feed pipe for transferring the virgin raw material and the recycled raw material, Plastic scrap recycling mixing device comprising a control panel for controlling the operation of the component. delete The method of claim 1, And a raw material input hopper provided in the molding machine to receive the mixed raw material supplied from the raw material mixing hopper. The method of claim 3, wherein And a direct feed pipe for directly transferring the regenerated raw material from the grinding hopper to the raw material input hopper. The method of claim 1, The transfer means, And a blower for transporting the recycled raw material. The method of claim 1, The selector is, And recycling the virgin raw material and the regenerated raw material by sequential timing operations. The method of claim 1, The selector is, An inlet communicating with the virgin raw material storage tank and the regenerated raw material storage tank, respectively; Opening and closing means for selectively opening and closing the inlet; And a suction means for generating a suction force to the inlet. The method of claim 1, And recycle the regenerated raw material in the regenerated raw material storage tank. The method of claim 1, The raw material mixing hopper, Stirring means for mixing the virgin raw material and the regenerated raw material therein; And a heating means for heating and drying the virgin raw material and the regenerated raw material therein. The method of claim 9, The heating means, Plastic scrap recycle mixing device characterized in that for supplying hot air into the raw material mixing hopper. The method of claim 3, wherein The raw material mixing hopper from the raw material input hopper to the raw material input hopper plastic scrap recycle mixing device, characterized in that the drop-type supply or airflow transport supply. The method of claim 3, wherein And a storage amount detecting means for detecting the storage amount of the raw material in the raw material input hopper and controlling the supply of the raw material from the raw material mixing hopper to the raw material input hopper. The method of claim 4, wherein And a valve means for selectively opening and closing the main feed pipe and the direct feed pipe.

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