WO2001046613A1 - Couvercle calorifuge - Google Patents

Couvercle calorifuge Download PDF

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Publication number
WO2001046613A1
WO2001046613A1 PCT/JP2000/008857 JP0008857W WO0146613A1 WO 2001046613 A1 WO2001046613 A1 WO 2001046613A1 JP 0008857 W JP0008857 W JP 0008857W WO 0146613 A1 WO0146613 A1 WO 0146613A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
cover
heat insulating
resistant
insulating cover
Prior art date
Application number
PCT/JP2000/008857
Other languages
English (en)
Japanese (ja)
Inventor
Yoshinori Murakami
Original Assignee
Yoshinori Murakami
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yoshinori Murakami filed Critical Yoshinori Murakami
Publication of WO2001046613A1 publication Critical patent/WO2001046613A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B29B7/726—Measuring properties of mixture, e.g. temperature or density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B29B7/823—Temperature control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B29B7/826—Apparatus therefor
    • 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
    • B29C48/275—Recovery or reuse of energy or materials
    • B29C48/276—Recovery or reuse of energy or materials of energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the present invention relates to a heat insulating cover, and more particularly to a heat insulating cover applicable to an electric heater of a plastic machine such as a heating cylinder of an injection molding machine, an extrusion molding machine, a mold, a die, a resin pipe, and the like.
  • Flexible insulation covers are known as insulation covers for heating equipment of plastic machines.
  • flexible heat-insulating covers are used for general heat-generating equipment.
  • Electric heaters for plastic machines require a set temperature when heating the machine from cold.
  • the heater surface temperature is, for example, about 30 minutes to 1 hour, and about 500 to 800, because the temperature control position is far from the surface of the heater. High temperature. There has been no flexible insulating cover that can withstand repeated use under such high temperature conditions.
  • WO 97/0 1 260 shows a heat insulating cover integrated with the heater, but such a configuration does not allow it to be attached to an electric heater of a plastic machine. Since the outer surface temperature is about 250 at the highest, it cannot be used for electric heaters of plastic machines where the surface temperature temporarily rises to about 500 to 800.
  • the present invention provides an insulation cover that has not only heat insulation performance (energy saving property) but also heat resistance and durability, and can be easily attached and detached in a short time during maintenance of a machine or maintenance of a heater or the like.
  • the purpose is to do.
  • the present invention relates to the following heat insulating cover and its use.
  • a flexible heat insulating cover provided with a heat insulating material layer, a cover member, and a fastening member.
  • Item 2 The heat insulating cover according to Item 1, wherein the cover member is formed by integrating the antifouling outer cover and the heat-resistant inner cover.
  • the heat-insulating material layer is formed by filling a heat-insulating material into a flexible and heat-resistant envelope. Insulation cover according to 1.
  • Item 4 The heat insulating cover according to Item 3, wherein the outer enclosure or the thermal cloth is sewn in a box shape.
  • Item 5 Inner and side surfaces of the box-shaped enclosure are made of heat-resistant cloth material, and the outer surface is made of Teflon-coated glass cloth or outer Teflon-coated glass cloth and inner heat-resistant cloth material.
  • Insulation cover according to item 4 consisting of an integrated product.
  • Item 6 The heat insulating cover according to Item 2, wherein the antifouling outer cover is made of a glass cloth coated with Teflon, and the heat-resistant inner cover is made of a heat-resistant cloth material.
  • Item 7 The heat-insulating cover according to Item 1, wherein the heat-insulating material layer has a projecting portion that is not covered by the cover member, and the cover member has an overlap allowance to cover the heat-insulating material layer.
  • Item 8 The heat insulating cover according to Item 1, wherein the fastening member is a heat-resistant magic fastener.
  • Item 9. Use of the thermal insulation cover described in any of Items 1 to 8 for thermal insulation of plastic machinery.
  • the following are the purposes of heat insulation of heating equipment such as plastic machines and injection molding machines.
  • the heat-insulating material layer is obtained by filling a heat-insulating material in a flexible and heat-resistant envelope.
  • the heat insulating material include inorganic fibers, ceramic fibers, glass fibers and the like, and preferably ceramic fibers (ceramic wool, blanket, and the like).
  • the heat insulating material layer and the cover member can be integrated by, for example, sewing.
  • Flexible and heat-resistant enclosures that can be filled with heat-insulating materials include heat-resistant sheets and cloths molded or sewn into bags or boxes, especially those sewn into boxes. Are preferably exemplified.
  • the material of the envelope is not particularly limited as long as it is a material having flexibility (flexibility) and heat resistance, but is not limited to a heat resistant temperature of 500 or more such as glass cloth or heat resistant material such as silica cloth or alumina cloth. The above at a temperature of 800 is preferred.
  • the heat resistant temperature of the heat insulating material is more preferably about 100 or more, the density is about 0.06 to 0.4 g / cm 3 , preferably about 0.09 to 0.3 g cm 3 , and the thermal conductivity is 0.4 WZm (At 0 0):
  • the thickness of the heat insulating material layer varies depending on the surface temperature. When the surface temperature is high, the thickness is increased, but is preferably about 5 to 200 mm, and more preferably about 5 to 50 mm. For example, in the case of general plastics, since the molding temperature is 400 or less, a thickness of about 5 to 40 mm is preferable.
  • the fastening member preferably has a dimension adjusting function, and may be a type in which a string belt made of a heat-resistant material such as silica cloth or glass cloth is wound, but it is more preferable to use a heat-resistant magic fastener. .
  • the fastening member is made of a heat-resistant material having a heat-resistant temperature of 170 or more. Examples of heat resistant magic fasteners include MID-T EMP and HI-AIR (manufactured by Berg Kuchi).
  • the cover member is made of a metathermal material such as glass cloth or silica cloth, and preferably has an outer coating.
  • a preferred cover member can be manufactured by sewing an inner cover member (preferably a glass cloth, more preferably a silica cloth) and an outer cover member (preferably an antifouling coated glass cloth) by sewing.
  • the thickness of the inner cover member (such as glass cloth or silica cloth) is preferably about 0.5 to 2 mm
  • the thickness of the outer cover member (such as glass cloth) is preferably about 0.3 to 2 mm.
  • the purpose of coating the outer cover member is to provide water resistance, oil resistance, alkali resistance, acid resistance, dust resistance, and peelability, etc. Mick, Teflon, silicon and the like.
  • a Teflon (polytetrafluoroethylene) coating from which the molten resin is easily peeled off, is preferable.
  • the inner surface of the silica cloth may temporarily be 100%.
  • the temperature of the glass cloth can be kept below the heat-resistant temperature (500: about), whereby the tensile strength of the cover member is reduced.
  • the cover member is provided by glass cloth and the heat resistance is provided by silica cloth, a cover member excellent in both tensile strength and heat resistance can be obtained.
  • the thickness of the entire cover member is preferably about 4 mm or less, which is preferable for a heat-insulating cover that requires frequent repetition of attachment and detachment and requires high characteristics in strength, durability and flexibility.
  • the thickness of the heat insulating cover as a whole is about 5 to 200 mm, preferably about 5 to 50 mm, and more preferably about 5 to 40 mm.
  • a heat insulating cover with a normal thickness is used in the resin supply zone, and heat is generated in the compression and metering zones, so it was mounted in the supply zone.
  • a heat insulating cover that is thinner than the heat insulating cover appropriate heat radiation and heat insulation can be obtained without lowering the heat insulating performance.
  • the use of a thin heat insulating cover to balance heat radiation and heat insulation can be applied not only to injection molding machines but also to extruder cylinders, resin pipes, and molds.
  • Nylon-coated stainless steel thread can be used where electrical insulation is not required.
  • the sewing machine can be sewn with a thread coated with Teflon on an E-glass thread that has a thickness of about 0.8 mm or less in outer diameter and has a strength that can be used for a sewing machine.
  • the heat insulating cover of the present invention is preferably used for heat insulation of a plastic machine in which a large number of heating devices are used to melt-mold a plastic resin such as an injection molding machine, an extrusion molding machine, a mold, a die, and a resin pipe.
  • the heat insulating cover 1 serves as a heat insulating material layer 2 and a cover member 3, and the cover member 3 is provided with a magic fastener 14 as a fastening means.
  • the heat insulating material layer 2 is constituted by filling a heat insulating material (ceramic wool, blanket) 2b into an inner case 2a made of silica cloth sewn in a box shape.
  • the heat insulating material layer 2 and the cover member 3 are integrated by sewing, for example, such that a protrusion 3c of the heat insulating material layer and a margin 3a of the cover member are formed.
  • the heat insulating cover of the present invention is configured such that the protrusion 2c and the overlap allowance 3c are overlapped, so that the extruder 8 of the injection molding machine 8 has a gap. It can be covered without it.
  • the heat insulating cover 1 may be The present invention may be applied to a plastic machine such that the protrusions 2c and 2c or the overlapping allowances 3c and 3c are adjacent to each other.
  • the cover member cut and the slit 13 it is possible to avoid interference of protrusions such as the temperature sensor 10, the heater electric terminal and the wiring 11. it can.
  • the surface of the die 9 can be covered by disposing a heat insulating cover using a magic fastener or the like at an appropriate position.
  • the cover member 3 When the cover member 3 is made by integrating a Teflon-coated glass cloth as an antifouling outer cover and a silica cloth as a heat-resistant inner cover by sewing, a high temperature of about 100,000 by silica cloth is used.
  • the electric heater can be coated and insulated.
  • a glass cloth can be used as the heat-resistant inner cover. Since the outer cover is Teflon coated, even if plastic adheres, for example, it can be easily peeled and removed.
  • the heat-insulating cover of the present invention can be used not only for heaters for plastic machines such as injection molding machines, extrusion molding machines, dies, dies, and resin pipes, but also for high-temperature heating devices of 300 or more (for example, high-pressure steam devices, It can also be installed as an outer wall of an industrial furnace used at a high temperature of 300 or more.
  • the overlapping margin of the cover member of the heat insulating cover of the present invention can be cut, and by providing a cutout in the cover member and the heat insulating material layer, it is possible to cut the surface of a plastic machine or an electric heat cover. It can be installed while avoiding interference with certain electrical terminals, wiring, temperature sensors, and protrusions. Also, when attaching / detaching the cover member, there is no need to remove the heater wiring, temperature sensor, etc., and it can be easily attached / detached as it is. An openable / closable lid member using a magic zipper can be attached to these cutouts as needed, or a slit can be inserted into the overlap of the cover members to open the heat source opening that causes heat radiation. It can be minimized.
  • the heat insulating material layer of the heat insulating cover By making the heat insulating material layer of the heat insulating cover into a box shape, it can fit into the protrusions and irregularities inside the heat insulating cover without gaps, and can minimize the convection of the air inside.
  • a magic fastener is used as a fastening member, even if the shape of the machine on which the insulation cover is attached is complicated (for example, irregularities, spheres, boxes, cylinders, protrusions, and combinations of these), the shape is simple. Covers can be covered without gaps by combining covers of various shapes.
  • the inner diameter can be adjusted in the case of a cylindrical cover, etc., and even if the cover has the same dimensions, the inner diameter of the machine to be installed can be adjusted.
  • the heat-insulating cover it is preferable that the heat-insulating cover be mounted in close contact in order to obtain a more effective heat-insulating effect. You may just hang on.
  • a Teflon coat or a ceramic coat may be applied to a heat-resistant cloth material or suture.
  • the heat-resistant temperature of the heat insulating cover of the present invention during continuous use is usually about 150 to 100, preferably about 200 to 70 O :.
  • the temperature on the heater surface was 228 t: the same setting when the heat insulating cover of the present invention was attached.
  • the surface temperature of the heater at a constant temperature (2 oo) rose to 260, and the surface temperature of the heat insulating cover was 69, greatly reducing the risk of burns during direct contact.
  • the surface temperature of the heater was 300, the surface temperature of the heat insulating cover of the present invention was 75.
  • the heat insulation cover of the present invention When the heat insulation cover of the present invention was attached to the electric heater, the heat loss from the heater surface could be cut, so that it was possible to reduce electricity consumption by 20% or more. On the other hand, when a known metal heat insulating cover was attached to the electric heater, the amount of electricity used was reduced by only 10%, and the energy saving efficiency of the heat insulating cover of the present invention was proved.
  • ABS resin was charged into an injection molding machine (mold clamping force: 650 t, injection amount: 700 gZl shot, cycle: 60 seconds, Z1 shot).
  • Figure 7 shows the mounting state at that time. As shown in Fig. 7, when the heat-insulating cover 1 was installed in zone 1 (Z1) and zone 2 ( ⁇ 2), the temperature change in zone 1 was 3 mm: The change in temperature was 9 :.
  • the change in temperature in zone 2 was 3 :, whereas the temperature change without the cover was 7; In zone 3, the temperature change was 5 when the insulation cover was applied to zones 1 and 2 even though the insulation cover was not installed. On the other hand, when there was no insulation cover in Zones 1 and 2, the temperature fluctuation was 9.
  • the heat-insulating cover of the present invention has an electrical insulating property at the portion where the electric heater touches to prevent electric leakage and electric shock due to electric heat, so that it can be used in a short time when maintaining the machine or when maintaining the heater. Easy installation and removal.
  • the heat insulating cover of the present invention is made of a heat-resistant material, for example, a material having a very low surface heat transfer coefficient, such as silica cloth, glass cloth, alumina cloth, and a fluororesin coating agent, and has a low surface temperature and burns. The danger is also reduced.
  • a material having a very low surface heat transfer coefficient such as silica cloth, glass cloth, alumina cloth, and a fluororesin coating agent
  • the heat insulating cover of the present invention By using the heat insulating cover of the present invention, it is possible to cope with the complicated shape of many plastic machines by adjusting the tightening member by preparing several types of heat insulating covers having different lengths and widths. Insulation covers with several standardized dimensions can also be used for applications that need to be dealt with in a dar-made manner, so it is possible to provide insulation covers with extremely low cost and quick delivery.
  • the uniformity and stabilization of the temperature distribution can improve the thickness accuracy of the plastic sheet or film in the width direction.
  • FIG. 1 is a perspective view showing a heat insulating cover of the present invention.
  • FIG. 2 is a perspective view showing the heat insulating cover of the present invention.
  • FIG. 3 is a perspective view showing the heat insulating cover of the present invention.
  • FIG. 4 shows a state when the heat insulating cover of the present invention is attached to the heater.
  • FIG. 5 shows a state where the heat insulating cover of the present invention is attached to an extruder of an injection molding machine.
  • FIG. 6 shows a state in which the heat insulating cover of the present invention is attached to a die.
  • FIG. 7 shows a state when the heat insulating cover of the present invention is attached to an injection molding machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un couvercle calorifuge flexible comportant une couche de matériau calorifuge, un élément de couvercle et un élément de fixation.
PCT/JP2000/008857 1999-12-21 2000-12-14 Couvercle calorifuge WO2001046613A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/363334 1999-12-21
JP36333499 1999-12-21

Publications (1)

Publication Number Publication Date
WO2001046613A1 true WO2001046613A1 (fr) 2001-06-28

Family

ID=18479073

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/008857 WO2001046613A1 (fr) 1999-12-21 2000-12-14 Couvercle calorifuge

Country Status (1)

Country Link
WO (1) WO2001046613A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60185799U (ja) * 1984-05-21 1985-12-09 株式会社　原田産業 着脱式保温カバ−
JPS6425597U (fr) * 1987-08-06 1989-02-13
JPH0710694U (ja) * 1993-07-14 1995-02-14 日本無機株式会社 保温カバー
JPH0942587A (ja) * 1995-07-28 1997-02-14 Ask:Kk 断熱シーリング装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60185799U (ja) * 1984-05-21 1985-12-09 株式会社　原田産業 着脱式保温カバ−
JPS6425597U (fr) * 1987-08-06 1989-02-13
JPH0710694U (ja) * 1993-07-14 1995-02-14 日本無機株式会社 保温カバー
JPH0942587A (ja) * 1995-07-28 1997-02-14 Ask:Kk 断熱シーリング装置

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