JPS59155027A - Microwave heating apparatus for continuous vulcanization - Google Patents

Microwave heating apparatus for continuous vulcanization

Info

Publication number
JPS59155027A
JPS59155027A JP2904383A JP2904383A JPS59155027A JP S59155027 A JPS59155027 A JP S59155027A JP 2904383 A JP2904383 A JP 2904383A JP 2904383 A JP2904383 A JP 2904383A JP S59155027 A JPS59155027 A JP S59155027A
Authority
JP
Japan
Prior art keywords
hot air
sponge
microwave heating
extrudate
rubber
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
Application number
JP2904383A
Other languages
Japanese (ja)
Inventor
Keizo Hayashi
林　景三
Masaru Ito
優 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei Co Ltd
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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP2904383A priority Critical patent/JPS59155027A/en
Publication of JPS59155027A publication Critical patent/JPS59155027A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H05B6/788—Arrangements for continuous movement of material wherein an elongated material is moved by applying a mechanical tension to it
    • 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
    • B29C35/06—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length
    • 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
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
    • 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
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0855—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using microwave
    • 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
    • B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
    • 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
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints

Abstract

PURPOSE:To prevent the surface roughness due to degassing from occurring at a sponge section, by providing an inlet of a microwave irradiating chamber for the vulcanization of an rubber extrudate having a sponge section with an apparatus for blowing hot air onto the surface of the sponge section. CONSTITUTION:In a step wherein rubber extrudates 11, 13 having sponge sections 9, 10 respectively such as a weather strip are introduced continuously into a microwave irradiating chamber, the hot air blown from the hot air discharging port 19 situated adjacent to the introducing section for the rubber extrudates 11, 12 is blown directly and uniformly to the surfaces of the sponge sections 9, 10. Thus, the temperatures of the sponge sections can be prevented from rising abnormally.

Description

【発明の詳細な説明】 この発明は、スポンジ部を有するゴム押出物の連続加硫
に際して、押出物を加硫温度まで昇温させるために使用
し、熱風でアプリケータ内を保温する機構を備えたマイ
クロ波加熱装置に関する。Detailed Description of the Invention This invention is used to raise the temperature of the extrudate to the vulcanization temperature during continuous vulcanization of a rubber extrudate having a sponge portion, and is equipped with a mechanism for keeping the inside of the applicator warm with hot air. The present invention relates to a microwave heating device.

通常、上記マイクロ波加熱装置ｌは、連続加硫ラインに
おいて例えば、第１図に示すように押出機２と゛熱風炉
３との間に配置され、また、マイクロ波加熱装置１には
第２図に示すように本体を構成するアプリケータ４内を
熱風が循環可能に熱風発生器５が装着されていた。図例
中、６は引取り機、７は導波管、８は搬送ベルトである
。Usually, the microwave heating device 1 is disposed in a continuous vulcanization line, for example, between an extruder 2 and a hot air stove 3 as shown in FIG. As shown in the figure, a hot air generator 5 was installed to allow hot air to circulate inside the applicator 4 that constitutes the main body. In the illustrated example, 6 is a take-up machine, 7 is a waveguide, and 8 is a conveyor belt.

この連続加硫用ラインで、例えば第３〜４図に示すよう
なスポンジ部９又は１０を備えたウェザストリップ（ゴ
ム押出物）１１又は１２を加硫する場合、マイクロ波加
熱により押出物の内部が急激に昇温し、スポンジ部９又
は１０においては、内部の発泡剤の分解が表面加硫（ス
キン層形成）に先行するため、カス抜けによる表面荒れ
が生じやすかった。なお、アプリケータ４内は前述の如
く熱風が循環されているが、ゴム押出物表面に直接に吹
き付けて加熱する構成でなく、マイクロ波加熱により昇
温された押出物の表面からの熱逸散を押えるようにアプ
リケータ４内の雰囲気温度が設定昇温温度より若干高め
に維持されているにすぎず、押出物の表面加硫を内部発
泡剤の分解に先行させる作用は奏し得ない。When a weather strip (rubber extrusion) 11 or 12 having a sponge portion 9 or 10 as shown in FIGS. 3 and 4 is cured on this continuous vulcanization line, the inside of the extrudate is The temperature rose rapidly, and in the sponge section 9 or 10, the decomposition of the foaming agent inside preceded the surface vulcanization (skin layer formation), so surface roughness was likely to occur due to shedding of debris. Note that although hot air is circulated within the applicator 4 as described above, it is not configured to directly spray and heat the surface of the rubber extrudate, but rather to dissipate heat from the surface of the extrudate heated by microwave heating. The atmospheric temperature within the applicator 4 is maintained at a temperature slightly higher than the set heating temperature to suppress the temperature increase, and the effect of causing the surface vulcanization of the extrudate to precede the decomposition of the internal blowing agent cannot be achieved.

この発明は、上記にかんがみて、スポンジ部を有するゴ
ム押出物の連続加硫に際して、スポンジ部にガス抜けに
よる表面荒れが生じるおそれのない連続加硫用マイクロ
波加熱装置を提供することを目的とする。In view of the above, an object of the present invention is to provide a microwave heating device for continuous vulcanization that is free from the risk of surface roughness caused by outgassing in the sponge portion during continuous vulcanization of a rubber extrudate having a sponge portion. do.

この発明の連続加硫用マイクロ波加熱装置は、アプリケ
ータのゴム押出物導入部位において、スポンジ部表面に
熱風を直接かつ均一に吹き付は可能に熱風吐出口を配設
することにより上記目的を達成する。The microwave heating device for continuous vulcanization of the present invention achieves the above object by providing a hot air discharge port that can spray hot air directly and uniformly onto the surface of the sponge portion at the rubber extrudate introduction site of the applicator. achieve.

以下、この発明の一実施例を第５〜６図に基づいて説明
する。Hereinafter, one embodiment of the present invention will be described based on FIGS. 5 and 6.

図例のように、マイクロ波加熱装置の本体をなすアプリ
ケータ１４には、従来と同様マイクロ波発振器１５と連
結された導波管１６が接続されるとともに、ゴム押出物
を搬送可能に搬送ベルト１７が配設されている。このア
プリケータ１４の押出物導入部位には、熱風発生器１８
からの熱風をゴム押出物のスポンジ部表面に直接かつ均
−吹き付は可能に熱風吐出口１９が配設されている。こ
の熱風吐出口１９は図例では、ダクト２０を介して熱風
発生器１８と連結され、第６図に示すように正面断面上
下切断ひし形であって該ひし形の両内側に三角柱状の整
流体２１．２１が一対配設されて矢印のようにゴム押出
物のスポンジ部に対して左右及び上から熱風を吹き付は
可能となっている。さらに、アプリケータ１４の押出物
導出部位側底部には熱風発生器１８とダクト２２を介し
て連結されている空気排出口２３が設けられている上記
実施例のマイクロ波加熱装置は、例えば従来と同様、押
出機２と熱風炉３との間に配置して使用され、アプリケ
ータ１４内を搬送されるゴム押出物をマイクロ波加熱に
より加硫温度（例えば２００°Ｃ）まで昇温させる。こ
のとき、ゴム押出物のスポンジ部表面は、アプリケータ
１４への導入部位において熱風吐出口１９から熱風（例
えば２２０〜２５０℃）を直接かつ均一に吹き付けられ
るので、スポンジ部表面の加硫（即ちスキン層の形成）
がマイクロ波加熱による発泡剤の分解に先行し、スポン
ジ部にガス抜けによる表面荒れが生じるおそれがない。As shown in the figure, a waveguide 16 connected to a microwave oscillator 15 is connected to the applicator 14, which forms the main body of the microwave heating device, as in the conventional case, and a conveyor belt is connected to the applicator 14, which forms the main body of the microwave heating device. 17 are arranged. A hot air generator 18 is installed at the extrudate introduction site of the applicator 14.
A hot air outlet 19 is provided to enable hot air to be sprayed directly and evenly onto the surface of the sponge portion of the rubber extrudate. In the illustrated example, the hot air outlet 19 is connected to the hot air generator 18 via a duct 20, and as shown in FIG. A pair of blowers .21 are disposed so that hot air can be blown onto the sponge portion of the rubber extrudate from the left, right, and above as shown by the arrows. Further, the microwave heating device of the above embodiment is provided with an air outlet 23 connected to the hot air generator 18 via a duct 22 at the bottom of the extrudate delivery portion of the applicator 14, for example. Similarly, the rubber extrudate, which is disposed between the extruder 2 and the hot air stove 3 and is conveyed in the applicator 14, is heated to a vulcanization temperature (for example, 200° C.) by microwave heating. At this time, the surface of the sponge part of the rubber extrudate is directly and uniformly blown with hot air (for example, 220 to 250°C) from the hot air outlet 19 at the introduction site to the applicator 14, so that the surface of the sponge part is vulcanized (i.e., Formation of skin layer)
This precedes the decomposition of the foaming agent by microwave heating, and there is no risk of surface roughness in the sponge portion due to gas escape.

この熱風の直接吹き付けは、単に熱風を保温のために循
環させるのに比して、スポンジ部表面の境膜の伝熱抵抗
が格段と小さくなり表面加熱が促進される。こうしてス
ポンジ部表面に吹き付けられた熱風は、アプリケータ１
４＋空気排出口２３→熱風発生器１８→熱風吐出［コ１
９と循環され従来と同様保温作用も奏する。This direct blowing of hot air significantly reduces the heat transfer resistance of the film on the surface of the sponge part and promotes surface heating, compared to simply circulating hot air for heat retention. The hot air blown onto the surface of the sponge part in this way is transferred to the applicator 1.
4 + air outlet 23 → hot air generator 18 → hot air discharge [ko 1
9 and has a heat-retaining effect as before.

また、ゴム押出物はアプリケータ１４内に搬送中に加硫
温度まで昇温されて、熱風炉３に導入され所定時間保温
され加硫を完了する。Further, the rubber extrudate is heated to a vulcanization temperature while being conveyed into the applicator 14, introduced into the hot air stove 3, and kept warm for a predetermined period of time to complete vulcanization.

なお、ゴム押出物が第４図に示すように芯金１３が埋設
されたものである場合は、マイクロ波加熱の効率向上の
ために、マイクロ波加熱装置と押出機との間に高周波加
熱装置を配置して芯金を加熱可能としておくとことが望
ましい。マイクロ波加熱装置の後方に連続して配置する
加硫装置は、熱風炉に限られず、流動床（ＦＢ）・溶融
塩浴（ＬＣＭ）を用いてもよい。また、スポンジ部のゴ
ム′材料としては、特に限定されないがＥＰＤＭ、ＣＲ
等を例示できる。In addition, if the rubber extrudate has a core metal 13 embedded as shown in FIG. 4, a high-frequency heating device is installed between the microwave heating device and the extruder to improve the efficiency of microwave heating. It is desirable to arrange the core metal so that it can be heated. The vulcanization device disposed continuously behind the microwave heating device is not limited to a hot air oven, and a fluidized bed (FB) or a molten salt bath (LCM) may be used. In addition, the rubber material for the sponge part is not particularly limited, but EPDM, CR, etc.
etc. can be exemplified.

この発明の連続加硫用マイクロ波加熱装置は、上記のよ
うな構成作用なので、スポンジ部を有するゴム押出物の
連続加硫に際して、スポンジ部にガス抜けによる表面荒
れが生じるおそれがなく、常に外観の良好なゴム押出物
を得ることができる。しかも単に熱風吐出口の構成を変
更するだけでよく、装置のコストアップや使用エネルギ
ーの増加がない。Since the microwave heating device for continuous vulcanization of the present invention has the above-described structure and function, there is no risk of surface roughness caused by outgassing in the sponge part during continuous vulcanization of rubber extrudates having a sponge part, and the appearance is always maintained. A good rubber extrudate can be obtained. Moreover, it is sufficient to simply change the configuration of the hot air discharge port, and there is no increase in the cost of the device or the energy used.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の連続加硫ラインの一例を示す配置図、第
２図は従来のマイクロ波加熱装置の一例を示す概略断面
図、第３〜４図はそれぞれスポンジ部を有するゴム押出
物の一例であるウェザストリップの断面図、第５図はこ
の考案のマイクロ波加熱装置の一例を示す部分切欠き斜
視図、第６図は第５図における熱風吐出口の拡大切欠き
斜視図である。 １・・・マイクロ波加熱装置、２・・・押出機、３・・
・熱風炉、４．１４・・・アプリケータ、５．１８・・
・熱風発生器、９．１０・・・スポンジ部、１１．１２
・・・ウェザストリップ（ゴム押出物）、１５・・・マ
イクロ波発振器、１９・・・熱風吐出口、２１・・・整
流体。 特　　許　　出　　願　　人 第　１　図 第２図 、７ ？Fig. 1 is a layout diagram showing an example of a conventional continuous vulcanization line, Fig. 2 is a schematic sectional view showing an example of a conventional microwave heating device, and Figs. FIG. 5 is a partially cutaway perspective view showing an example of the microwave heating device of this invention, and FIG. 6 is an enlarged cutaway perspective view of the hot air outlet in FIG. 5. 1... Microwave heating device, 2... Extruder, 3...
・Hot stove, 4.14... Applicator, 5.18...
・Hot air generator, 9.10...Sponge part, 11.12
... weather strip (rubber extrusion), 15 ... microwave oscillator, 19 ... hot air discharge port, 21 ... fluid regulator. Patent applicant Figure 1 Figure 2, 7?

Claims (1)

【特許請求の範囲】 スポンジ部を有するゴム押出物の連続加硫に際して、押
出物を加硫温度まで昇温させるために使用し、熱風でア
プリケータ内を保温する機構を備えたマイクロ波加熱装
置において、 アプリケータのコム押出物導入部位に、前記ゴム押出物
のスポンジ部表面に前記熱風を直接かつ均一に吹き付は
可能に熱風吐出口が配設されていることを特徴とする連
続加硫用マイクロ波加熱装置。[Scope of Claims] A microwave heating device that is used to raise the temperature of the extrudate to the vulcanization temperature during continuous vulcanization of the rubber extrudate having a sponge portion, and is equipped with a mechanism for keeping the inside of the applicator warm with hot air. Continuous vulcanization, characterized in that a hot air discharge port is provided at the comb extrudate introduction portion of the applicator to enable the hot air to be sprayed directly and uniformly onto the surface of the sponge portion of the rubber extrudate. microwave heating device.
JP2904383A 1983-02-23 1983-02-23 Microwave heating apparatus for continuous vulcanization Pending JPS59155027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2904383A JPS59155027A (en) 1983-02-23 1983-02-23 Microwave heating apparatus for continuous vulcanization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2904383A JPS59155027A (en) 1983-02-23 1983-02-23 Microwave heating apparatus for continuous vulcanization

Publications (1)

Publication Number Publication Date
JPS59155027A true JPS59155027A (en) 1984-09-04

Family

ID=12265361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2904383A Pending JPS59155027A (en) 1983-02-23 1983-02-23 Microwave heating apparatus for continuous vulcanization

Country Status (1)

Country Link
JP (1) JPS59155027A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5328348A (en) * 1991-03-29 1994-07-12 Kinugawa Rubber Ind. Co., Ltd. Control system for continuous vulcanization line for manufacturing sponge rubber product
EP0665091A2 (en) * 1994-01-21 1995-08-02 The Standard Products Company Curing line oven

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57113048A (en) * 1980-12-31 1982-07-14 Micro Denshi Kk Continuous vulcanization of rubber containing metal core

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57113048A (en) * 1980-12-31 1982-07-14 Micro Denshi Kk Continuous vulcanization of rubber containing metal core

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5328348A (en) * 1991-03-29 1994-07-12 Kinugawa Rubber Ind. Co., Ltd. Control system for continuous vulcanization line for manufacturing sponge rubber product
US5385463A (en) * 1991-03-29 1995-01-31 Kinugawa Rubber Ind. Co., Ltd. Control system for continuous vulcanization line for manufacturing sponge rubber product
EP0665091A2 (en) * 1994-01-21 1995-08-02 The Standard Products Company Curing line oven
EP0665091A3 (en) * 1994-01-21 1996-01-03 Standard Products Co Curing line oven.

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