KR101137764B1 - Extrusion press of cooling roller - Google Patents

Extrusion press of cooling roller Download PDF

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Publication number
KR101137764B1
KR101137764B1 KR1020100081468A KR20100081468A KR101137764B1 KR 101137764 B1 KR101137764 B1 KR 101137764B1 KR 1020100081468 A KR1020100081468 A KR 1020100081468A KR 20100081468 A KR20100081468 A KR 20100081468A KR 101137764 B1 KR101137764 B1 KR 101137764B1
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KR
South Korea
Prior art keywords
cooling
chamber
roller
cooling roller
chambers
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KR1020100081468A
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Korean (ko)
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KR20120018550A (en
Inventor
유철우
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(주)현진에프엠피
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Priority to KR1020100081468A priority Critical patent/KR101137764B1/en
Publication of KR20120018550A publication Critical patent/KR20120018550A/en
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Publication of KR101137764B1 publication Critical patent/KR101137764B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/834—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention relates to a cooling roller of an extruder for cooling and curing a product to be extruded in an extruder, and more particularly, the cooling water supplied from the outside to the inside of the cooling roller alternately left and right along the circumferential direction. The present invention relates to a cooling roller of an extruder that allows the temperature of the outer surface of the cooling roller to be evenly passed to improve the cooling efficiency of the extruded product.
It is a cooling roller of the extrusion machine, the cylindrical body is formed in a cylindrical shape on each side of the shaft; First and second chambers and third and fourth chambers formed at both ends of the body, respectively; First and second channels configured to be connected to the chambers on the left and right sides at a predetermined interval along the circumferential direction of the body to transfer the cooling water alternately to exchange heat; The first and second supply pipe to alternately transfer the cooling water while interconnecting with the left and right chambers in the body.

Description

Extrusion press of cooling roller

The present invention relates to a cooling roller of an extruder for cooling and curing a product to be extruded in an extruder, and more particularly, the cooling water supplied from the outside to the inside of the cooling roller alternately left and right along the circumferential direction. The present invention relates to a cooling roller of an extruder that allows the temperature of the outer surface of the cooling roller to be evenly passed to improve the cooling efficiency of the extruded product.

In general, extrusion molding plasticizes the molding material by heating and kneading in a heating cylinder, and extruding and cooling the raw material, which is melted or pressurized by the rotation of a screw embedded in the cylinder, through a die bonded to the tip of the cylinder and cooled. It is a processing method for obtaining a molded article by solidifying.

Such extrusion molding is a typical molding method used to produce a large amount of products having a constant cross section such as rod-shaped, tubular, and plate-shaped shapes. It is widely used to produce a wide variety of products.

That is, in extrusion molding of a product such as a sheet or a film in extrusion molding, a liquid synthetic resin in which a solid synthetic resin is heated and melted in a cylinder is extruded into a thin sheet and a film by passing through a mold at the end of the cylinder, and then molded. The product is molded by passing the film through a cooling roller to cure the product, and the finished product is wound on a winding roller and shipped.

In the extruder as described above, as the molten synthetic resin passes through the mold, the shape of the product is molded, and cooling and curing immediately after passing through the mold improves the molding efficiency of the product and reduces defects. This provides a very important feature.

The cooling means of such extruded products may adopt a natural cooling method depending on the product, but generally adopts a forced cooling method through which a cooling roller passes. In the past, various types of cooling rollers have been proposed and widely used. have.

Looking at the conventional structure of the cooling roller as an example, as shown in Figure 9 of the accompanying drawings, the shaft (2) is installed on both sides of the roller (1) is mounted to the system of the extruder is rotated by a separate power It is configured to be driven.

In addition, the inlet chamber (3) and the discharge chamber (4) through which the coolant flows from the outside are formed on both inner sides of the roller (1), and at the same time, the inlet and outlet chambers (3) and (4) are plural along the circumferential direction. It is comprised by communicating with the channel 5 formed by the dog.

Therefore, after the coolant is introduced into the inlet chamber 3 from the outside, the coolant is moved to the discharge chamber 4 through the respective channels 5, and then passes through a path discharged to the outside to cool the surface of the roller 1.

However, the conventional configuration as described above is to cool the surface of the roller in the process of moving the coolant from the one side inlet chamber (3) of the long roller (1) to the discharge chamber (4) through each channel (5). Accordingly, there was a serious problem that the temperature difference between the inlet and outlet sides was not uniform.

That is, since the cooling water passing through each channel 5 of the roller 1 is heat-extruded in contact with the outer surface of the roller in the course of passing from one side of the roller to the other side, a large temperature difference occurs on both sides.

Such a temperature difference causes a problem that the extruded article is not evenly cooled, which in turn causes a significant influence on the extruded article, thereby degrading productability and generating defective products.

In addition, the cooling rollers require not only a larger cooling roller to cope with the conditions of the extruded product, but also have problems such as stopping work in an overheated state. There was also a problem that must be used.

On the other hand, in order to supplement the above problems to some extent it has been proposed to form a waterway spirally inside the roller, but this also has a limit in maintaining the temperature of the inlet and outlet side in which the coolant is introduced uniformly.

The present invention is made in view of the various problems as described above to provide a cooling roller of the extruder to evenly cool the product to be extruded in the extruder to significantly improve the curability and productivity of the product.

The present invention can be suitably applied to the plate-shaped product to be extruded by circulating the coolant evenly inside the cooling roller to have an even cooling temperature over the entire surface of the roller.

That is, to ensure that the product extruded from the mold of the extruder is cooled evenly as it passes through the cooling roller, it is very important to prevent the product from twisting or swelling during the hardening process, and for the high completeness of the final molded product Is directly related to the cooling function of the cooling roller.

If the product to be extruded is not cooled evenly, a problem occurs in the curing process, such that the problem of not maintaining a uniform surface and a uniform thickness, such as the problem occurs in the present invention by circulating the cooling water evenly in the cooling roller in the present invention It is to improve the efficiency considerably.

The cooling roller according to the present invention has a structure that allows the coolant to be circulated evenly therein and can expect a very high cooling efficiency.

The cooling roller is formed in a cylindrical shape and both sides of the inner and outer chambers in which the coolant is introduced and distributed are installed side by side to overlap each other, and the outer chamber has an outer shape in which shafts are respectively installed.

In addition, the inner and outer chambers are formed in the left and right transverse direction, and a plurality of channels are formed to cross each other along the circumferential direction at positions adjacent to the outer surface of the body and configured to move the coolant from one side to the other side, In the installation space inside the body, the supply pipes interconnecting the inner and outer chambers on both sides are formed to cross each other so that the coolant can be moved from one side to the other side.

Therefore, the cooling water is moved to the left and right to cross the body of the cooling roller to the left and right to cross each other to maintain an even temperature at all times to quickly and evenly cool the extruded molded article contacting the outer surface.

The present invention improves the cooling water circulation structure of the cooling roller used in the extruder, that is, by alternately moving the cooling water moved from one side to the other side along the circumferential direction, it is possible to keep the outer surface temperature of the cooling roller constantly and evenly. Will be.

Therefore, the coolant supplied from the outside cools the surface evenly by the cooling roller at all times, thereby rapidly and accurately cooling the extruded product in the extruder, thereby improving the productivity as well as the productivity.

In addition, the cooling roller of the present invention can be used as a heat exchanger roller in various industrial fields, such as using a hot water roller or a hot water roller instead of a cooling water passing through the inside as well as a heat roller. do.

In particular, the present invention can be expected to improve the manufacturability structure, such as simple and simple configuration, not only easy manufacturing, but also requires no additional power.

1 is a cross-sectional view showing the overall configuration of the cooling roller according to the present invention.
Figure 2 is a cross-sectional view taken along line A-A of the present invention Figure 1
3 is a cross-sectional view taken along the line B-B of the present invention Figure 1
4 is a cross-sectional view taken along the line C-C of the present invention Figure 1
5 is an exploded perspective view showing the overall configuration of the cooling roller according to the present invention.
Figure 6 is a cross-sectional view showing another embodiment of the present invention
7 is a cross-sectional view taken along the line A-A of the present invention Figure 6
8 is a cross-sectional view taken along the line B-B of the present invention Figure 6
Figure 9 is an embodiment showing the structure of a conventional cooling roller

Hereinafter, with reference to the accompanying drawings, a detailed description for carrying out the present invention in detail.

1 to 5, the cooling roller 100 of the present invention is provided at the front end of an extruder for extruding a material such as synthetic resin or vinyl to provide a function of forcibly cooling the molded article that is extruded. .

Extruded products are formed in a relatively thin form such as a sheet or a sheet, and melted at a high temperature inside a cylinder and are extruded while passing through a mold, and then the extruded product is molded and then cooled and cured while being guided through a cooling roller. After molding to finished product, it is wound up in a winding roller and shipped.

Cooling roller 100 of the present invention has a cylindrical body 10 as a whole, while the shafts 11 and 12 for power transmission are installed on both sides of the body 10, respectively, the installation space of the empty space ( 13)

At one end of the body 10, the first and second chambers 20 and 21 are installed side by side so as to overlap the inside and the outside by the partition 14 and the shaft 11, respectively. 14 and the other shaft 12 are installed side by side so that the third and fourth chambers 30, 31 overlap.

At this time, the outer first chamber 20 of the one side is connected to the cooling water inlet 15 formed in the shaft 11 so that the cooling water can be introduced from the outside and at the same time, the second chamber 21 is the outlet 16 It is configured to discharge the cooling water heat exchange is connected to the outside.

In addition, on the outer circumferential edge of the body 10, the first and second water channels 40 and 41 are alternately formed at regular intervals along the circumferential direction so as to penetrate in the left and right transverse directions.

That is, the first channel 40 is configured to connect the first chamber 20 and the third chamber 30 on one side, and the second channel 41 alternately formed therein is the second chamber 21. ) And the fourth chamber 41 are connected.

Therefore, the first and second water channels 40 and 41 are alternately installed at regular positions at a position close to the outer surface of the body 10 so that the coolant flowing from the outside is introduced through one chamber. It is moved to the other chamber side or from the other side to one side to achieve heat exchange with the outer surface.

In addition, a plurality of first and second supply pipes 50 and 51 are alternately installed in the interior installation space 13 of the body 10 and are configured to interconnect the chambers on both sides at the same time.

That is, the one side of the first supply pipe 50 is configured to connect the second chamber 21 and the third chamber 30 to communicate with the cooling water exchanged in the third chamber 30 to the second chamber 21 side. Another second supply pipe 51 alternately installed therein is configured to connect the first chamber 20 and the fourth chamber 31 so as to communicate with each other. At 20, a function of supplying to the fourth chamber 31 is provided.

At this time, the first and second supply pipes (50, 51) is installed in the transverse direction in the installation space 13, the heat exchange is not made with the outside, the heat exchanged cooling water or the cooling water to be heat exchanged in one chamber In the to provide the function to transfer to the other chamber side.

Accordingly, the first and second supply pipes 50 and 51 are more preferably formed to be somewhat larger than the size of the channels 40 and 41 described above, but the number of the first and second supply pipes 50 and 51 is smaller.

Therefore, the cooling roller 100 of the present invention configured as described above has a structure in which shafts 11 and 12 are respectively installed on both side ends of the cylindrical body 10, and is installed in the mold front part of the conventional extrusion machine. It is rotated by separate power.

That is, the molded product extruded from the mold of the extruder is heat-exchanged (cooled) with the cooling roller 100 while passing through the outer surface of the cooling roller 100 so that the final product is molded.

When the cooling roller 100 according to the present invention is introduced with the coolant from the outside through the inlet 15 connected to the one shaft 11, first, the cooling roller 100 is introduced into the first chamber 20, which is the outer chamber of one side.

The coolant flowing in this way is transferred along two paths in the first chamber 20. The first path is the inner side of the other side via a plurality of first water channels 40 formed alternately along the circumferential direction of the body 10. Flows into the third chamber 30, which is a chamber, and at the same time, passes through the plurality of second supply pipes 51 alternately installed in the installation space 13, which is the second path, into the fourth chamber 30, which is the outer chamber of the other side. do.

At this time, the first channel 40 is formed in a plurality of circumferential direction in a circumferential direction at a position close to the outer surface of the body 10 to cool the outer surface of the body 10 to extrude the molded product in contact with the surface thereof The cooling water is cooled, and the heat exchanged cooling water is collected into the third chamber (30).

Subsequently, the coolant (cold water having undergone heat exchange) collected into the third chamber 30 is transferred into the second chamber 21 through the first supply pipes 50 formed in the installation space 13 and recovered.

Meanwhile, the coolant conveyed through the second supply pipes 51 flows directly into the fourth chamber 31 without performing heat exchange, and thus the coolant introduced into the fourth chamber 31 is the circumference of the body 10. The surface of the body 10 is also cooled by being transferred to the second chamber 21 through the second channels 41 formed along the direction.

That is, as it is alternately formed with the first channel 40 described above, the first channel 40 is transferred in a reverse direction, thereby heat-exchanging with the surface of the body 10 to cool the extruded molded product in contact with the surface of the body 10, and thus the body ( The cooling water having cooled 10) is recovered into the second chamber 21.

Since the coolant recovered to the second chamber 21 is a coolant sufficiently heat exchanged with the body 10, the coolant is maintained at a relatively high temperature, and the heat exchanged coolant is not shown through an outlet 16 connected to the shaft 11. Is returned to the external system.

Therefore, the cooling roller 100 of the present invention is heat-transfer while the supplied cooling water is transferred in one direction from the other direction through the plurality of first channel 40 formed alternately along the circumferential direction, and at the same time After being transferred to the other side through the second supply pipe 51 of the inner center, it is also transferred in the reverse direction through another second water channel 41 formed along the circumferential direction of the body, thereby achieving heat exchange, so that the whole of the cylindrical body 10 Will be cooled evenly.

On the other hand, Figures 6 to 8 of the accompanying drawings show another embodiment of the present invention.

In the above embodiment, the channel 11a and the second and fourth chambers of the body 10a are simultaneously changed while the structure of the shafts 11a and 12a installed on both sides of the body 10a of the cooling roller 100a. By changing the structures of (21a) and (31a), it is to improve the structure and manufacturability.

That is, the coolant supplied from the outside is supplied to the third chamber 21a side along the channel 40a formed in the circumferential direction from the first chamber 20a in the body 10a and at the same time the first chamber 20a in the first chamber 20a. It is supplied to two path | route by the 4th chamber 31a side along the 2nd supply pipe 51a.

Therefore, heat exchange is performed in the process of passing through the plurality of waterways 40a formed along the circumferential direction, which is the first path, and the heat-exchanged cooling water is collected in the third chamber 21a and then through the first supply pipe 50a. Recovered to the second chamber 21a.

In addition, the coolant supplied to the fourth chamber 31a side along the second supply pipe 51a from the first chamber 20a, which is the second path, also passes through a plurality of channels 41a alternately formed along the circumferential direction. The coolant, which is heat-exchanged with the outer surface and undergoes heat exchange, is recovered to the second chamber 21a.

Therefore, in the above embodiment, since the path of the cooling water is simpler than the above-described embodiment, the structure is so simple and easy to manufacture.

On the other hand, the cooling roller of the present invention is to be very usefully applied to the extrusion molding machine can be used, on the other hand, it is possible to use not as a cooling roller but also as a thermal roller.

That is, by passing the hot water or other thermal medium of high temperature, not the cooling water, it will have a feature that can be used as a thermal roller.

100: cooling roller 10: body
11, 12: shaft 13: installation space
14: bulkhead 15: inlet
16: outlet 20: first chamber
21: second chamber 30: third chamber
31: fourth chamber 40: first channel
41: second channel 50: first supply pipe
51: second supply pipe

Claims (2)

Cooling rollers for extrusion machines, including
A cylindrical body in which a shaft is formed on each side while being formed in a cylindrical shape;
First and second chambers and third and fourth chambers formed at both ends of the body, respectively;
First and second channels configured to be connected to the chambers on the left and right sides at a predetermined interval along the circumferential direction of the body to transfer the cooling water alternately to exchange heat;
Cooling rollers of the extruder, characterized in that consisting of; the first and second supply pipes to alternately transfer the cooling water while interconnecting with the left and right chambers in the body.
The method of claim 1,
The second chamber and the fourth chamber of the cooling roller of the extruder, characterized in that configured to be in direct communication with the second channel in the horizontal direction.
KR1020100081468A 2010-08-23 2010-08-23 Extrusion press of cooling roller KR101137764B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100081468A KR101137764B1 (en) 2010-08-23 2010-08-23 Extrusion press of cooling roller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100081468A KR101137764B1 (en) 2010-08-23 2010-08-23 Extrusion press of cooling roller

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Publication Number Publication Date
KR20120018550A KR20120018550A (en) 2012-03-05
KR101137764B1 true KR101137764B1 (en) 2012-04-25

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101583789B1 (en) * 2015-03-19 2016-01-19 (주)창영기계 Heating and cooling roller
CN114193679B (en) * 2021-11-17 2024-01-30 安徽金田高新材料股份有限公司 Traction cooling roller device and use cleaning method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0620780B2 (en) * 1989-05-18 1994-03-23 日本ロール製造株式会社 Roll heating structure
JP2000027848A (en) 1998-07-08 2000-01-25 Kitagawa Elaborate Mach Co Ltd Heat roll and heat roll press device
JP2001159419A (en) 1999-12-01 2001-06-12 Sasakura Engineering Co Ltd Structure of rotary type cooling roller
KR100601276B1 (en) 2005-09-03 2006-07-13 주식회사 동방공업 The cooling structure of solide type guide roller iron works

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0620780B2 (en) * 1989-05-18 1994-03-23 日本ロール製造株式会社 Roll heating structure
JP2000027848A (en) 1998-07-08 2000-01-25 Kitagawa Elaborate Mach Co Ltd Heat roll and heat roll press device
JP2001159419A (en) 1999-12-01 2001-06-12 Sasakura Engineering Co Ltd Structure of rotary type cooling roller
KR100601276B1 (en) 2005-09-03 2006-07-13 주식회사 동방공업 The cooling structure of solide type guide roller iron works

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