KR20190008687A - Cooling device for preventing particle aggregation due to mixing and crushing of material and recycled material for blow molding - Google Patents

Cooling device for preventing particle aggregation due to mixing and crushing of material and recycled material for blow molding Download PDF

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Publication number
KR20190008687A
KR20190008687A KR1020170090366A KR20170090366A KR20190008687A KR 20190008687 A KR20190008687 A KR 20190008687A KR 1020170090366 A KR1020170090366 A KR 1020170090366A KR 20170090366 A KR20170090366 A KR 20170090366A KR 20190008687 A KR20190008687 A KR 20190008687A
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KR
South Korea
Prior art keywords
cooling
recycled material
screw
unit
air
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KR1020170090366A
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Korean (ko)
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KR101968742B1 (en
Inventor
양세문
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조선대학교산학협력단
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Priority to KR1020170090366A priority Critical patent/KR101968742B1/en
Priority to PCT/KR2018/007929 priority patent/WO2019017652A1/en
Publication of KR20190008687A publication Critical patent/KR20190008687A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/02—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/40—Adding fluid, other than for crushing or disintegrating by fluid energy with more than one means for adding fluid to the material being crushed or disintegrated

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device, and more particularly, to a cooling device that is capable of mixing a recycled material such as a defective molded product, scrap, and runner with an original material, And a cooling device for preventing particle aggregation due to pulverization and mixing of recycled materials.
The present invention relates to a method for manufacturing a recycled material, which comprises a crushing unit for crushing a molded recycled material such as a molded product, a scrap, and a runner, a screw body provided with an inlet and an outlet for introducing and discharging the recycled material pulverized in the crushing unit, At least one screw provided on the rotating shaft and including a screw blade for stirring and separating the recycled material pulverized by the crushing unit and a driving unit provided adjacent to the screw body for driving the rotating shaft And a cooling unit provided on at least one side of the screw body or the rotary shaft and having a cooling unit for cooling the recycled material when stirring and separating the recycled material.

Figure P1020170090366

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for preventing particle aggregation due to pulverization and mixing of a material and a recycled material for blow molding,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device, and more particularly, to a cooling device that is capable of mixing a recycled material such as a defective molded product, scrap, and runner with an original material, And a cooling device for preventing particle aggregation due to pulverization and mixing of recycled materials.

Generally, thermoplastic plastics are processed through various molding methods such as injection molding, extrusion molding, vacuum molding, and blow molding.

In such a molding method, a recycled material is formed during the molding process for controlling the temperature or pressure, and a recycled material such as a runner which is a supply path for scrap or thermoplastic plastic is inevitably generated in the molding.

Actual plastics processing companies are recycling these recycled materials and mixing them with original materials to reduce the material cost.

Korean Patent Laid-Open Publication No. 10-408-0105228 discloses scrap of plastic molded articles and apparatus and method for recycling raw materials of defective products.

However, scrap of recycled plastic materials and recycling raw materials for defective materials are subjected to various steps such as a pulverization step, a particle size separator step, a by-product molding step, a cooling step, a cutting step and the like for recycling the recycled material.

As a result, the time and cost of the process increase, and facilities for each process must be provided separately.

Korean Patent Publication No. 10-2012-0065882 discloses an apparatus for recycling an injection-molded resin. Since the recycled materials that have been crushed in the crushing unit of the remnant resin recycling apparatus posted are thermally or frictionally coupled to each other and are not uniform in size, the recycled material having uneven particle sizes that are not uniform in size is directly molded, There is a disadvantage in that the defective rate is increased.

Korean Patent Publication No. 10-408-0105228 Korean Patent Publication No. 10-2012-0065882

The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a method and apparatus for cooling and separating a recycled material crushed by a crushing unit by heat or friction generated during crushing, And to provide a cooling device for preventing particle aggregation due to pulverization and mixing of a recycled material.

In order to accomplish the above object, the present invention provides a cooling device for preventing particle aggregation due to pulverization and mixing of a material for a blow molding and a recycled material, comprising: a crushing unit for crushing a molding recycled material such as defective products, scrap, runner, A rotating shaft rotatably installed in the screw body, and a rotary shaft disposed on the rotating shaft and being crushed by the crushing unit, wherein the rotary shaft rotates and stirs the recycled material, At least one screw including a screw blade for separating the screw body from the screw body and a driving unit provided adjacent to the screw body for driving the rotating shaft; Cooling to cool recycled materials when agitating and separating material Provided with a; cooling separation unit having a unit.

The cooling unit may include an air generating unit installed adjacent to the screw body to generate cooling air, and an air supplying unit that connects the air generating unit and the screw body to supply cooling air generated in the air generating unit to the screw body. And at least one nozzle provided at at least one side of the screw main body and coupled to the air supply pipe to jet the cooling air supplied from the air supply pipe to the recycled material to be agitated and separated.

Wherein the cooling unit includes a hollow portion formed in the rotary shaft, an air generating portion formed in the screw blade in a direction perpendicular to the hollow portion and adjacent to the screw body to generate cooling air, An air supply pipe provided in the air generating portion and the rotary joint for supplying cooling air generated in the air generating portion into the hollow portion and the branch pipe; And a nozzle for spraying the hollow portion and the cooling air supplied to the branch pipe to the recycled material to be stirred and separated.

The cooling unit may include an air generating part formed at one end of the rotating shaft and having a hole formed at an outer circumferential edge thereof and adjacent to the screw body to generate cooling air, a rotary joint installed at one end of the rotating shaft, And an air supply pipe installed in the rotary joint for supplying cooling air generated by the air generating unit to the hole of the rotary shaft, and at least one air outlet formed along the outer circumference of the rotary shaft, And a tubular nozzle for spraying the cooling air to the recycled material to be agitated and separated.

Wherein the screw vane has a first screw vane formed on an outer circumferential edge of one side of the rotating shaft about the discharge port and configured to move the recycled material to an outlet port and a second screw configured to move the recycled material to the outlet port, It has wings.

The cooling and separating unit may further include a transfer unit for transferring the recycled material discharged from the discharge port to the raw material storage hopper.

The cooling device for preventing particle aggregation due to the pulverization and mixing of the material and the recycled material of the present invention is characterized in that the recycled material pulverized by the pulverizing unit is cooled or separated by heat or friction generated during pulverization, It keeps the size of supplied recycled material constant and prevents the occurrence of defective products such as bubbles during molding by mixing recycled materials and raw materials.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual view showing a cooling device for preventing particle aggregation due to pulverization and mixing of a material for a blow molding and a recycled material according to the present invention;
FIG. 2 is an exploded perspective view showing a cooling separation unit of a cooling device for preventing particle aggregation due to pulverization and mixing of a material and a recycled material for blow molding according to an embodiment of the present invention; FIG.
3 is a partially cutaway cross-sectional view showing the main part of another embodiment of the cooling and demounting unit shown in Fig. 2,
Fig. 4 is a cross-sectional view showing another embodiment of the cooling / demounting unit shown in Fig. 2,
Fig. 5 is a partially cutaway cross-sectional view showing a main portion of the cooling and demounting unit shown in Fig. 4; Fig.

A cooling device for preventing particle aggregation due to pulverization and mixing of a material for a blow molding and a recycled material according to an embodiment of the present invention will be described in detail.

FIG. 1 is a conceptual diagram of a cooling device for preventing particle aggregation due to pulverization and mixing of a material and a recycled material according to the present invention.

Referring to FIG. 1, the present invention includes a crushing unit 10 for crushing a recycled material such as a scrap, a runner, and a defective molded product of an article formed by injection molding, a recycled material crushed by the crushing unit 10, And a cooling separation unit 20 which separates the particles which are coupled by friction and heat.

The pulverizing unit 10 is a pulverizer equipped with a pulverizing blade. The pulverizing unit 10 pulverizes the recycled materials into particles, but the pulverizing unit 10 is in a state of being joined due to heat generated by driving of the pulverizer, So that the size is not constant.

The cooling separation unit 20 includes a cooling unit 70 for cooling particles recycled by the crushing unit 10, that is, particles, and a cooling unit 70 for preventing particles from being coupled to each other, (30).

 The cooling separation unit 20 further includes a transfer unit 80 for transferring the particles of the recycled material discharged from the cooling separation unit 20 to the raw material storage hopper 5 in which the raw material 4 for injection molding is stored .

 Figs. 2 to 5 show embodiments of the cooling separation unit 20 of the cooling device for preventing particle aggregation due to the pulverization and mixing of the material and the recycled material according to the present invention. Hereinafter, elements that perform the same functions as those in the above-described drawings are denoted by the same reference numerals.

2 to 5, the transfer separation unit 30 includes a screw main body 50 capable of introducing particles of recycled material into the inside thereof or discharging particles of recycled material to the outside, A screw 40 rotatably installed in the inside of the screw body 50 for stirring and separating particles of the recycled material and a driving unit 60 provided adjacent to the screw body 50 to drive the rotating shaft.

The screw main body 50 may have a cylindrical shape with an internal space 59 formed thereon, and may be integrally formed or detachable to separate the upper portion, and pillow blocks 57 are provided at both ends in the longitudinal direction. The screw body 50 includes an inlet 53 through which particles of recyclable material can flow into the interior of the screw body 50 and particles of recycled material cooled and agitated by the screw 40 and cooling unit 70 And an outlet 55 which can be discharged to the outside of the screw main body 50 is formed.

The inlet 53 may be formed in the separated upper portion 51 of the screw body 50 when it is removable and the outlet 55 is formed in the lower portion of the screw body 50.

The screw 40 is provided with a rotary shaft 41 connected at both ends to a pillow block 57 provided at both ends of the screw main body 50 so as to be rotatable at both ends and a rotary shaft 41 provided at the outer circumference of the rotary shaft 41, And screw vanes 43 for stirring or separating the particles of the recycled material introduced into the screw main body 50.

A plurality of rotary shafts 41 may be provided in a bar shape, and are rotationally driven by a driving unit 60. The rotation shaft 41 may be formed with a hollow portion 44 in the longitudinal direction and a hole 42 may be formed in the rotation shaft 41 so as to penetrate from the one end face to the outer circumferential direction of the rotation shaft 41.

The screw vane 43 is provided on one side of the rotary shaft 41 when the rotary shaft 41 is divided into two parts in the direction perpendicular to the longitudinal direction of the rotary shaft 41, The first screw vane 45 is formed so that the particles of the recycled material are moved toward the discharge port 55 and the particles of the recycled material are moved toward the discharge port 55 on the other side 41b of the rotary shaft 42 And a second screw vane (47). That is, the second screw vane 47 is formed in a direction opposite to the first screw vane 45.

The branch wing 43 is formed such that both ends thereof are opened so that one end of the branch wing 43 is connected to the screw wing 43, And the other end is connected to the rotary shaft 41 so that the hollow portion 44 of the rotary shaft 41 and the branch pipe 79 communicate with each other.

The first screw vane 45 and the second screw vane 47 formed in both directions of the screw prevent the loss of the screw main body 50 from being lost in the screw main body 50. When the recycled material flows into the screw main body 50, Allow cooling and separation of recycled material regardless.

The driving unit 60 includes a motor 61 for driving the rotating shaft 41 and provided to the outside of the screw main body 50 to rotate the rotating shaft 41, A motor sprocket 63 and a rotary shaft sprocket 65 which is driven by the motor sprocket 63 and engages with one end of the rotary shaft 41. The rotating power of the motor 61 is transmitted to the rotating shaft 41 through the motor sprocket 63 and the rotating shaft sprocket 65 so that the particles of the recycled material can be agitated and separated and moved due to the rotation of the screw 40 .

The cooling unit 70 cools the particles of the recycled material introduced into the screw body 50 through the inlet 53. The cooling unit 70 is provided adjacent to the outside of the screw body 50 to generate cooling air, An air supply pipe 73 connecting the air generating portion 71 and the screw main body 50 to supply the cooling air generated in the air generating portion 71 to the screw main body 50, 73 and at least one nozzle 75 provided at at least one side of the screw body for spraying cooling air supplied from the air supply pipe 73 onto particles of recycled material to be agitated and separated.

The cooling air generated in the air generating portion 71 is moved along the air supply pipe 73 connected to the air generating portion 71 and is supplied to the screw 40 through the nozzle 75 provided in the screw main body 50, The particles of the recycled material being stirred and separated by the centrifugal separator to cool the particles of the recycled material.

The valve 72 of the embodiment of the present invention is a solenoid valve which is coupled by the discharge pressure of the cooling air discharged to the nozzle according to opening and closing of the valve The particles of the recycled material are separated.

3 showing another embodiment of the cooling / separating unit 20, the cooling unit includes an air generating portion 71 provided adjacent to the screw main body 50 to generate cooling air, 41 formed in the air generating portion 71 and the rotary joint 74 and the cooling air generated in the air generating portion 71 in the hollow portion 44 of the rotary shaft 41, An air supply pipe 73 for supplying the inside of the branch pipe 79 of the screw blade 43 and a cooling air supply pipe 73 provided at one end of the branch pipe 79 and supplied to the hollow pipe 44 and the branch pipe 79, And a nozzle 75 for spraying the particles of the recycled material to be stirred and separated.

The cooling air generated in the air generating portion 71 is moved along the air supply pipe 73 connected to the air generating portion 71 and is discharged through the hollow portion 44 of the rotating shaft 41 to the branching portion Reaches the nozzle 79 and is sprayed on the particles of the recycled material which are stirred and separated by the screw 40 through the nozzle 75 provided at one end of the branch pipe 79 to cool the particles of the recycled material .

4 to 5 showing another embodiment of the cooling and separating unit, an air generating unit 71 is provided adjacent to the screw body to generate cooling air, And an air supply pipe 73 provided at the air generation part 71 and the rotary joint 74 for supplying cooling air generated in the air generation part 71 to the hole 42 of the rotary shaft 41 And at least one air outlet 76 formed in a spiral shape along the outer periphery of the rotary shaft 41 to form a tubular shape for spraying cooling air supplied from the holes 42 onto particles of recycled material to be stirred and separated The nozzle 75 may be provided.

The cooling air generated in the air generating portion 71 flows through the hole 42 formed in the rotary shaft 41 along the air supply pipe 73 connected to the air generating portion 71 and through the tubular nozzle 75 to the rear rotary shaft 41 Is sprayed on the particles of recycled material which are stirred and separated by the screw 40 through the air outlet 76 formed in the tubular nozzle 75 along the outer periphery of the tubular nozzle 75 to cool the particles of the recycled material.

The rotary joint 74 shown in Figs. 3 to 5 is configured such that the rotary shaft 41 is rotatably connected to the air supply pipe 73 connected to the air generating portion 71 so that even when the rotary shaft 41 is rotationally driven, (320) is not twisted.

The cooling unit 70 cools the recycled material joined by heat or friction in the crushing unit 10 so that it can be separated well when agitated and separated by the screw 40, Cooling the frictional heat to prevent particles of the recycled material from recombining by heat.

Further, the particles of the recycled material cooled and separated in the cooling and separating unit 20 are prevented from being bonded to the original material by the residual heat even when mixed with the original material.

The transfer unit 80 for transferring the particles of the recycled material cooled and separated by the cooling and separation unit 20 to the raw material storage hopper 5 quickly transfers the particles of the recycled material and the particles of the recycled material are transferred It prevents the particles of the recycled material from remaining in the passage, thus enhancing the efficiency of transporting the particles of the recycled material.

Since the particles of the recycled material discharged from the cooling and separating unit 30 of the present invention are not bonded and are uniform in size, they are mixed with the raw material and uniform in size during injection molding, thereby preventing generation of bubbles due to uneven particle size, The incidence is low.

Although the present invention has been described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments thereof except as defined in the appended claims. Those skilled in the art will appreciate that various modifications and equivalent embodiments are possible. Accordingly, the true scope of protection of the present invention should be determined only by the technical idea of the appended claims.

10: crushing unit 20: cooling separation unit
30: transfer separation unit 50: screw main body
40: screw 60:
70: cooling unit 80: mobile unit

Claims (6)

A crushing unit for crushing a recycled material such as defective molding, scrap, and runner;
A screw main body provided with an inlet and an outlet through which the recycled raw material pulverized in the crushing unit is introduced and discharged, a rotating shaft rotatably installed in the screw main body, and a recycled material pulverized by the crushing unit, At least one screw including a screw blade for separating the screw body from the screw body, and a driving unit provided adjacent to the screw body to drive the rotating shaft;
And a cooling unit provided on at least one side of the screw body or the rotary shaft and having a cooling unit for cooling the recycled material when stirring and separating the recycled material. Cooling system to prevent particle aggregation due to crushing and mixing of material. The method according to claim 1,
The cooling unit may include an air generating unit installed adjacent to the screw body to generate cooling air, and an air supplying unit that connects the air generating unit and the screw body to supply cooling air generated in the air generating unit to the screw body. And at least one nozzle provided on at least one side of the screw main body for spraying the cooling air supplied from the air supply pipe to the agitated and separated recycled material in combination with the air supply pipe. Cooling device for particle aggregation due to crushing and mixing of materials and recycled materials. The method according to claim 1,
Wherein the cooling unit includes a hollow portion formed in the rotary shaft, an air generating portion formed in the screw blade in a direction perpendicular to the hollow portion and adjacent to the screw body to generate cooling air, An air supply pipe provided in the air generating portion and the rotary joint for supplying cooling air generated in the air generating portion into the hollow portion and the branch pipe; And a nozzle for spraying the cooling air supplied to the hollow portion and the branch pipe to the recycled material to be agitated and separated, characterized in that the material for blow molding and the cooling device for preventing particle aggregation due to pulverization and mixing of the recycled material . The method according to claim 1,
Wherein the cooling unit includes an air generating part formed at one end of the rotating shaft and having a hole formed at an outer circumferential edge thereof and adjacent to the screw body to generate cooling air, a rotary joint installed at one end of the rotating shaft, An air supply pipe installed in the rotary joint and supplying cooling air generated in the air generating unit to the hole of the rotary shaft; and at least one air outlet formed in a spiral shape along the outer circumference of the rotary shaft, And a tubular nozzle for spraying air onto the recycled material to be agitated and separated. The material for blow molding and the cooling device for preventing particle aggregation due to pulverization and mixing of the recycled material The method according to claim 1,
Wherein the screw vane has a first screw vane formed on an outer circumferential edge of one side of the rotating shaft about the discharge port and configured to move the recycled material to an outlet port and a second screw configured to move the recycled material to the outlet port, And a cooling device for preventing particle aggregation due to pulverization and mixing of the recycled material. The method according to claim 1,
Wherein the cooling separation unit further comprises a transfer unit for transferring the recycled material discharged from the discharge port to the raw material storage hopper. The cooling device for preventing particle aggregation due to pulverization and mixing of a material and a recycled material.
KR1020170090366A 2017-07-17 2017-07-17 Cooling device for preventing particle aggregation due to mixing and crushing of material and recycled material for blow molding KR101968742B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020170090366A KR101968742B1 (en) 2017-07-17 2017-07-17 Cooling device for preventing particle aggregation due to mixing and crushing of material and recycled material for blow molding
PCT/KR2018/007929 WO2019017652A1 (en) 2017-07-17 2018-07-13 Cooling device for preventing particles from aggregating during pulverizing and mixing of raw material and recycled material for blow molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020170090366A KR101968742B1 (en) 2017-07-17 2017-07-17 Cooling device for preventing particle aggregation due to mixing and crushing of material and recycled material for blow molding

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KR20190008687A true KR20190008687A (en) 2019-01-25
KR101968742B1 KR101968742B1 (en) 2019-04-12

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Citations (4)

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KR20050018318A (en) * 2003-08-04 2005-02-23 주식회사 티알환경기술 Wasted styrofoam reducing apparatus
KR20080105228A (en) 2007-05-30 2008-12-04 고등기술연구원연구조합 Materialization apparatus for recycling scraps and inferior goods of plastic molded articles and method thereof
KR20110117347A (en) * 2010-04-21 2011-10-27 박봉찬 Potential of hydrogen decreasing method and the apparatus for recycled aggregate
KR20120065882A (en) 2010-12-13 2012-06-21 주식회사 에이치앤글로벌 Recycling apparatus for residue resin of injection molding

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Publication number Priority date Publication date Assignee Title
KR910002580Y1 (en) * 1989-03-11 1991-04-22 손원병 Apparatus for cooling of boiled soybean
JP2004130234A (en) * 2002-10-10 2004-04-30 Toyo Radiator Co Ltd Volume reduction machine of plastic
KR200319149Y1 (en) * 2003-03-17 2003-07-04 오인숙 screw conveyor structured cylindrical centrifugal machine capable of separating minutely powdered solid
KR101393425B1 (en) * 2013-11-14 2014-05-12 지앤피바이오텍 주식회사 Apparatus for reducing food waste having a means of air supply
KR101424011B1 (en) * 2014-04-17 2014-08-01 이재석 Garbage drying screw and garbage disposer using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050018318A (en) * 2003-08-04 2005-02-23 주식회사 티알환경기술 Wasted styrofoam reducing apparatus
KR20080105228A (en) 2007-05-30 2008-12-04 고등기술연구원연구조합 Materialization apparatus for recycling scraps and inferior goods of plastic molded articles and method thereof
KR20110117347A (en) * 2010-04-21 2011-10-27 박봉찬 Potential of hydrogen decreasing method and the apparatus for recycled aggregate
KR20120065882A (en) 2010-12-13 2012-06-21 주식회사 에이치앤글로벌 Recycling apparatus for residue resin of injection molding

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KR101968742B1 (en) 2019-04-12

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