JPH01128812A - Heater of resin tubular material - Google Patents
Heater of resin tubular materialInfo
- Publication number
- JPH01128812A JPH01128812A JP62286889A JP28688987A JPH01128812A JP H01128812 A JPH01128812 A JP H01128812A JP 62286889 A JP62286889 A JP 62286889A JP 28688987 A JP28688987 A JP 28688987A JP H01128812 A JPH01128812 A JP H01128812A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- annular groove
- vessel
- tubular material
- heater
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 33
- 239000011347 resin Substances 0.000 title claims abstract description 13
- 229920005989 resin Polymers 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 10
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 abstract description 6
- 238000003780 insertion Methods 0.000 abstract description 5
- 230000037431 insertion Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 3
- 238000000605 extraction Methods 0.000 abstract 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6418—Heating of preforms
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
- B29C2035/042—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids other than water
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/079—Auxiliary parts or inserts
- B29C2949/08—Preforms made of several individual parts, e.g. by welding or gluing parts together
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/68—Ovens specially adapted for heating preforms or parisons
- B29C49/681—Ovens specially adapted for heating preforms or parisons using a conditioning receptacle, e.g. a cavity, e.g. having heated or cooled regions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/258—Tubular
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は樹脂製管材の成形に用いる管材の加熱器に関す
るもので、特に温度分布を均一化し、熱応答性を向上せ
しめたものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tube heater used for molding resin tube materials, and in particular, the heater has uniform temperature distribution and improved thermal response.
一般に樹脂製管材を加熱成形する場合には、管材全体を
軟化温度まで加熱した後、管材を金型に固定してブロー
成形する方法が用いられている。加熱する方法としては
、グリコール等の熱媒を槽に入れ、加熱する管材の軟化
温度に調整し、その中に管材を浸けて加熱軟化させるか
、又は電気炉を加熱する管材の軟化温度に調整し、その
中に管材を挿入して加熱軟化させている。Generally, when thermoforming a resin tube material, a method is used in which the entire tube material is heated to a softening temperature, and then the tube material is fixed in a mold and blow molded. The heating method is to put a heating medium such as glycol in a tank and adjust it to the softening temperature of the tube material to be heated, and then immerse the tube material in it and heat it to soften it, or to adjust it to the softening temperature of the tube material to be heated in an electric furnace. Then, a tube material is inserted into it and heated to soften it.
（発明が解決しようとする問題点）
しかし樹脂の性質上、管材の成形温度中が狭く、加熱し
すぎると管材が溶けてしまうため、軟化温度と融点の間
で温度を正確にコントロールする必要がある。特に軟化
温度と融点の間隔が狭い管材の場合には、温度管理がむ
ずかしく歩留りが悪い。また熱媒槽を使用した場合には
、加熱後に熱媒を除去する必要があり、その処理が大変
である。(Problem to be solved by the invention) However, due to the nature of resin, the molding temperature of the tube material is narrow, and if it is heated too much, the tube material will melt, so it is necessary to accurately control the temperature between the softening temperature and the melting point. be. Particularly in the case of tube materials with a narrow interval between the softening temperature and the melting point, temperature control is difficult and yields are poor. Furthermore, when a heat medium tank is used, it is necessary to remove the heat medium after heating, which is difficult to process.
また熱媒槽や電気炉は、所定の温度に到達させるために
はかなりの時間を要し、かつ内部温度を均一にするのに
撹拌装置を必要とする。更に管材の挿入や取出時の放熱
量が大きい。Further, heat medium tanks and electric furnaces require a considerable amount of time to reach a predetermined temperature, and require a stirring device to make the internal temperature uniform. Furthermore, the amount of heat dissipated when inserting and removing the tube material is large.
（問題点を解決するための手段〕
本発明はこれに鑑み種々検討の結果、温度分布が均一で
迅速な熱応答性を有する樹脂製管材の加熱器を開発した
もので、金属製容器の上部に管材挿入用環状凹溝を設け
、内部に作動液を封入して容器をヒートパイプ化し、容
器下面を受熱面とし、環状凹溝部を放熱面として受熱面
を加熱することにより環状凹溝に挿入した管材を内外面
より加熱することを特徴とするものである。(Means for Solving the Problems) In view of this, and as a result of various studies, the present invention has developed a heater made of a resin tube material that has uniform temperature distribution and rapid thermal response. An annular groove for inserting the tube material is provided in the tube, a working fluid is sealed inside to make the container into a heat pipe, the bottom surface of the container is used as a heat receiving surface, and the annular groove part is used as a heat dissipation surface.By heating the heat receiving surface, the tube is inserted into the annular groove. It is characterized by heating the pipe material from the inside and outside.
本発明加熱器は上記の如くヒートパイプ化され、受熱面
をガスバーナーや電気ヒーター等で加熱すると、環状凹
溝は昇温しで放熱面となり、該凹溝に挿入した管材を内
外面より加熱する。The heater of the present invention is made into a heat pipe as described above, and when the heat receiving surface is heated with a gas burner, electric heater, etc., the temperature of the annular groove rises and becomes a heat radiation surface, heating the tube inserted into the groove from the inside and outside. do.
環状凹溝の昇温はヒートパイプ特有の現象で、昇温が速
く、温度分布が均一なため、攪拌機等を使用することな
く、如何なる部分においても一定温度となる。従って環
状凹溝に挿入された管材は内外面より均一に加熱され、
ヒートパイプの特徴として所定温度に到達するまでの時
間が短いため、すぐに操業にとりかかることができる。The temperature rise in the annular groove is a phenomenon unique to heat pipes, and because the temperature rises quickly and the temperature distribution is uniform, the temperature is constant in any part without using a stirrer or the like. Therefore, the tube inserted into the annular groove is heated evenly from the inner and outer surfaces.
Heat pipes are characterized by the short time it takes to reach a predetermined temperature, so they can be put into operation immediately.
また管材の挿入口は管材の断面積と（まぽ等しくするこ
とができるので、管材の出し入れにおける熱ロスを低減
°することができる。In addition, since the tube material insertion opening can be made approximately equal in cross-sectional area to the tube material, heat loss during insertion and removal of the tube material can be reduced.
尚容器内に封入する作動液としてはナフタレン、ジフェ
ニールとジフェニールオキサイドの混合液、水等を使用
する。As the working fluid sealed in the container, naphthalene, a mixed solution of diphenyl and diphenyl oxide, water, etc. are used.
（実施例〕
第１図は本発明加熱器の一実施例を示すもので、図に示
すように円筒状の金属容器（１）に、上面（２）より内
部に向けて樹脂製管材を挿入する環状凹溝（３）を設け
、内部に作動液（４）としてナフタレンを封入し、容器
（１）をヒートパイプ化し、容器（１）の底面（５）を
受熱面とし、環状凹溝（３）を放熱面とする。このよう
にして図には示してないが容器（１）の底面（５）をガ
スバーナー又は電気ヒーター等の熱源により加熱してヒ
ートパイプを作動させ、作動液（４）を底面（５）の受
熱面で蒸発させ、環状凹溝（３）の放熱面で凝縮させる
ことにより、環状凹溝（３）内を昇温させる。(Example) Figure 1 shows an example of the heater of the present invention. As shown in the figure, a resin tube is inserted into a cylindrical metal container (1) from the top surface (2) toward the inside. An annular groove (3) is provided, naphthalene is sealed inside as a working fluid (4), the container (1) is made into a heat pipe, the bottom surface (5) of the container (1) is used as a heat receiving surface, and the annular groove ( 3) is the heat radiation surface.Thus, although not shown in the figure, the bottom surface (5) of the container (1) is heated by a heat source such as a gas burner or an electric heater to operate the heat pipe, and the working fluid ( 4) is evaporated on the heat-receiving surface of the bottom surface (5) and condensed on the heat-radiating surface of the annular groove (3), thereby raising the temperature inside the annular groove (3).
環状凹溝（３）内が設定温度に達したならば、第２図に
示すように容器（１）の上面環状凹溝（３）内に樹脂製
管材（７）を挿入して加熱する。When the inside of the annular groove (3) reaches the set temperature, the resin tube (7) is inserted into the upper annular groove (3) of the container (1) and heated as shown in FIG.
面図において（６）は環状凹溝の温度を設定温度に制御
するため、熱源の熱量制御ｌ装置に信号を出す熱電対を
示す。In the top view, (6) shows a thermocouple that outputs a signal to the heat amount control device of the heat source in order to control the temperature of the annular groove to a set temperature.
このように本発明加熱器はヒートパイプ化されているた
め、環状凹溝内の温度分布は均一で、設定温度に到達す
る時間が短く、如何なる部分においても一定温度に保た
れ、環状凹溝内に挿入した管材は内外面より均一に加熱
される。また環状凹溝の管材出入口面積は加熱する管材
の断面積とほぼ等しくすることが容易なため、管材の出
し入れによる熱ロスが極めて小さい。As described above, since the heater of the present invention is made into a heat pipe, the temperature distribution inside the annular groove is uniform, the time to reach the set temperature is short, and the temperature is maintained at a constant temperature in any part. The tube inserted into the tube is heated evenly from the inside and outside. Further, since the area of the entrance and exit of the tube material in the annular groove can be easily made approximately equal to the cross-sectional area of the tube material to be heated, heat loss due to insertion and removal of the tube material is extremely small.
（発明の効果）
このように本発明加熱器によれば、樹脂製管材の加熱時
間が短く、如何なる部分も均一に加熱されるので、すぐ
に操業にとりかかることができるばかりか、歩留の向上
が著しく、管材の出し入れによる熱ロスが少ない等、工
業上顕著な効果を奏するものである。(Effects of the Invention) As described above, according to the heater of the present invention, the heating time of the resin tube material is short and any part is heated uniformly, so not only can operations be started immediately, but also the yield can be improved. It has remarkable industrial effects, such as a remarkable reduction in heat loss due to the insertion and removal of pipe materials.
第１図は本発明加熱器の一実施例を示す側断面図、第２
図は本発明加熱器に樹脂製管材の挿入工程を示す説明図
である。
１、金属製容器
２、上面
３、環状凹溝
４、作動液
５、底面
６、熱電対
７、樹脂製管材Fig. 1 is a side sectional view showing one embodiment of the heater of the present invention;
The figure is an explanatory view showing the process of inserting a resin tube into the heater of the present invention. 1. Metal container 2, top surface 3, annular groove 4, working fluid 5, bottom surface 6, thermocouple 7, resin tube material
Claims (1)
作動液を封入して容器をヒートパイプ化し、容器下面を
受熱面とし、環状凹溝部を放熱面として受熱面を加熱す
ることにより環状凹溝に挿入した管材を内外面より加熱
することを特徴とする樹脂製管材の加熱器。By providing an annular groove for inserting the tube material in the upper part of the metal container, sealing the working fluid inside and turning the container into a heat pipe, the bottom surface of the container is used as a heat receiving surface, and the annular groove part is used as a heat radiation surface to heat the heat receiving surface. A heater for resin pipe material, which heats the pipe material inserted into the annular groove from the inside and outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62286889A JPH01128812A (en) | 1987-11-13 | 1987-11-13 | Heater of resin tubular material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62286889A JPH01128812A (en) | 1987-11-13 | 1987-11-13 | Heater of resin tubular material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01128812A true JPH01128812A (en) | 1989-05-22 |
Family
ID=17710313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62286889A Pending JPH01128812A (en) | 1987-11-13 | 1987-11-13 | Heater of resin tubular material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01128812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000043185A2 (en) * | 1999-01-22 | 2000-07-27 | C-Tech Ltd | Method of producing centrifugally cast, glass fiber reinforced plastic tubes |
-
1987
- 1987-11-13 JP JP62286889A patent/JPH01128812A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000043185A2 (en) * | 1999-01-22 | 2000-07-27 | C-Tech Ltd | Method of producing centrifugally cast, glass fiber reinforced plastic tubes |
| WO2000043185A3 (en) * | 1999-01-22 | 2002-01-24 | C Tech Ltd | Method of producing centrifugally cast, glass fiber reinforced plastic tubes |
| US6635213B1 (en) | 1999-01-22 | 2003-10-21 | C-Tech Ltd. | Method of producing centrifugally cast, glass fiber reinforced plastic tubes |
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