JPH0464847B2 - - Google Patents
Info
- Publication number
- JPH0464847B2 JPH0464847B2 JP1220883A JP1220883A JPH0464847B2 JP H0464847 B2 JPH0464847 B2 JP H0464847B2 JP 1220883 A JP1220883 A JP 1220883A JP 1220883 A JP1220883 A JP 1220883A JP H0464847 B2 JPH0464847 B2 JP H0464847B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- pressure
- ejector
- negative pressure
- vacuum tank
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C2037/90—Measuring, controlling or regulating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、タイヤ加硫機用真空装置の改良に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a vacuum device for a tire vulcanizer.
タイヤ加硫機には、ブラダー内のドレン（復水
と冷却水）排出とブラダー引込みのための真空装
置が付設されているが、ドレンが高温であるこ
と、気水混合状態であること、タイヤ加硫機周辺
での油設備はきらわれること、などの理由から水
封式真空ポンプまたはエゼクター式が利用される
ことが多い。
Tire vulcanizers are equipped with a vacuum device for discharging condensate (condensate and cooling water) inside the bladder and drawing in the bladder, but the condensate must be at a high temperature, be in a mixed state of air and water, and Water ring vacuum pumps or ejector types are often used because oil equipment around the vulcanizer is not recommended.
ところが、水封式真空ポンプは、第１図ａに示
す如く、水封式真空ポンプVp，Vp′が電動機Ｍ，
M′によつて回転され、この時ポンプVp′内には封
入水が導入されて、あるレベルが保たれている。
このため、吸入側バルブＶの方向より気水混合体
を吸引し、排水側バルブVa及び気水分離器ａに
て気体と液体に分離し排出する。一方、吸入側は
減圧コントロール装置Ｖ１ｃ、コントロール弁Ｖ
０にて真空圧を−200mmＨｇ程度に保ちながらプ
レスサイドVf−１〜Vf−ｎより異物が入るので
ストレイナーSTRにて異物の除去をする。この
ストレイナーSTRはポンプVp，Vp′の保護のため
に不可欠である。このように水封式真空ポンプ設
備は、設備コストが高いうえに広い設置スペース
を必要とするので、タイヤ加硫機の台数がある程
度以上にならないとい経済性が悪いという問題が
ある。 However, in the water ring type vacuum pump, as shown in Fig. 1a, the water ring type vacuum pumps V p , V p ' are connected to electric motors M,
At this time, sealed water is introduced into the pump V p ' and maintained at a certain level.
Therefore, the steam/water mixture is sucked in from the direction of the suction side valve V, separated into gas and liquid by the drain side valve Va and the steam/water separator a, and then discharged. On the other hand, on the suction side, there is a pressure reduction control device V1c, a control valve V
While maintaining the vacuum pressure at about -200 mmHg at 0, foreign matter enters from the press sides Vf-1 to Vf-n, so the foreign matter is removed using a strainer STR. This strainer STR is essential for protecting the pumps V p and V p ′. As described above, the water ring type vacuum pump equipment has a high equipment cost and requires a large installation space, so there is a problem that it is not economical unless the number of tire vulcanizers exceeds a certain level.
また、エゼクター式は、第１図ｂに示す如く、
止め弁V1、水量調節弁V2を介してエゼクター１
に高圧水を供給すると共に、該エゼクター１の負
圧配管２を止め弁V3を介してタイヤ加硫機３の
ブラダー配管４に連結して構成され、１加硫機に
１セツトづつ組込まれるものであるが、設備コス
トが安いものの真空安定度が悪く、しかも真空度
が−400〜−700mmＨｇにも達するためにブラダー
の耐久性を低下させる原因となつていた。 In addition, the ejector type is as shown in Figure 1b,
Ejector 1 via stop valve V 1 and water flow control valve V 2
It is constructed by supplying high pressure water to the ejector 1 and connecting the negative pressure pipe 2 of the ejector 1 to the bladder pipe 4 of the tire vulcanizer 3 via a stop valve V3, and one set is incorporated into each vulcanizer. However, although the equipment cost is low, the vacuum stability is poor, and the degree of vacuum reaches -400 to -700 mmHg, which causes a decrease in the durability of the bladder.
本発明は、上記従来の問題点に鑑みてなされた
もので、基本的には、設備コストが安く保守管理
が容易なエゼクター式を採用すると同時に、真空
安定度の向上と真空度の減圧を合理的に図つたタ
イヤ加硫機用真空装置を新規に提供するものであ
る。
The present invention was made in view of the above-mentioned conventional problems, and basically adopts an ejector type that is low in equipment cost and easy to maintain, and at the same time improves vacuum stability and rationalizes the reduction of vacuum degree. The purpose of this invention is to provide a new vacuum device for a tire vulcanizer that is designed to be effective.
このため、本発明は、タイヤ加硫機のブラダー
内のドレン排出とブラダー引込みのための真空装
置であつて、
エゼクターと、該エゼクターの負圧配管に連結
される真空タンクと、該真空タンクから上記加硫
機に負圧を供給する経路の途中に介設され、真空
タンクによつて供給される負圧を所定値まで減圧
する減圧手段と、上記真空タンクと上記エゼクタ
ーの高圧水供給配管との間に介装され、高圧水の
供給を制御して真空タンク内の負圧を所定値に維
持するエゼクター制御手段とを備えたことを特徴
とするものである。
Therefore, the present invention provides a vacuum device for discharging drain in the bladder of a tire vulcanizer and retracting the bladder, which comprises: an ejector; a vacuum tank connected to a negative pressure piping of the ejector; a pressure reducing means that is interposed in the path for supplying negative pressure to the vulcanizer and reduces the negative pressure supplied by the vacuum tank to a predetermined value; and high-pressure water supply piping for the vacuum tank and the ejector. The vacuum tank is characterized by comprising an ejector control means interposed between the vacuum tank and the vacuum tank to control the supply of high-pressure water and maintain the negative pressure in the vacuum tank at a predetermined value.
以下、本発明の実施例を添付図面について詳細
に説明する。
Embodiments of the invention will now be described in detail with reference to the accompanying drawings.
第２図に示すように、複数台、例えば３〜10台
のタイヤ加硫機１０−１〜１０−１０用の真空装
置１１は、エゼクター１２と、50〜500小型真
空タンク１３と、減圧手段１４と、エゼクター制
御手段１５とで基本構成される。 As shown in FIG. 2, a vacuum device 11 for a plurality of tire vulcanizers 10-1 to 10-10, for example, 3 to 10, includes an ejector 12, a 50 to 500 small vacuum tank 13, and a pressure reducing means. 14 and ejector control means 15.
エゼクター１２には、止め弁V3、水圧自動弁
V4を介して高圧水（2.5Kg／cm2以上）が供給され
る。 The ejector 12 has a stop valve V 3 and an automatic water pressure valve.
High pressure water (more than 2.5Kg/ cm2 ) is supplied via V4 .
真空タンク１３は、エゼクター制御手段１５の
真空用自動弁V5を介してエゼクター１２の負圧
配管１６と連結されると共に、ドレン排出用止め
弁V6を有する。真空タンク１３は、エゼクター
１２により−400〜−700mmＨｇの負圧になる。 The vacuum tank 13 is connected to the negative pressure pipe 16 of the ejector 12 via an automatic vacuum valve V5 of the ejector control means 15, and has a drain discharge stop valve V6 . The vacuum tank 13 is brought to a negative pressure of -400 to -700 mmHg by the ejector 12.
一方、真空タンク１３と上記加硫機１０−１，
１０−２，……１０−１０を一連に接続するブラ
ダー配管１７の途中、より具体的には真空タンク
１３の真空供給ポートには、上記減圧手段１４が
連結され、真空タンク１３によつて供給される負
圧を減圧したうえで上記各加硫機１０−１，１０
−２，……１０−１０に供給する。 On the other hand, the vacuum tank 13 and the vulcanizer 10-1,
10-2, . . . , 10-10 in series, and more specifically, the vacuum supply port of the vacuum tank 13 is connected to the pressure reducing means 14, which is supplied by the vacuum tank 13. After reducing the negative pressure generated, each of the vulcanizers 10-1 and 10
-2,...10-10.
該減圧手段１４は、真空用減圧弁V7の下流側
のブラダー配管１７の負圧に応じて作動するダイ
ヤフラム式の負圧検出器１８とで構成され、真空
タンク１３からブラダー配管１７に至る負圧を所
定値（例えば−150mmＨｇ±−50mmＨｇ）に減圧
する。 The pressure reducing means 14 is composed of a diaphragm-type negative pressure detector 18 that operates in response to the negative pressure in the bladder pipe 17 downstream of the vacuum pressure reducing valve V 7 . The pressure is reduced to a predetermined value (for example, -150 mmHg±-50 mmHg).
減圧手段１４は、第３図に示すように、ダイヤ
フラム式の負圧検出器１８に代えて圧力調節計１
９を設け、操作電気により真空用減圧弁V7を作
動させる構成としてもよい。 As shown in FIG. 3, the pressure reducing means 14 includes a pressure regulator 1 instead of a diaphragm type negative pressure detector 18.
9 may be provided, and the vacuum pressure reducing valve V 7 may be operated by operating electricity.
上記ブラダー配管１７には、上記各加硫機１０
−１〜１０−１０のブラダー分岐配管２０−１〜
２０〜１０が、加硫機内弁V8-1〜V8-10と止め弁
V9-1〜V9-10を介して接続され、複数台の加硫機
１０−１〜１０−１０が１台の真空装置１１に集
約された集約型とする。 Each of the vulcanizers 10 is connected to the bladder piping 17.
-1~10-10 Bladder branch piping 20-1~
20 to 10 are vulcanizer internal valves V 8-1 to V 8-10 and stop valves.
The vacuum device 11 is an integrated type in which a plurality of vulcanizers 10-1 to 10-10 are connected via V 9-1 to V 9-10 and integrated into one vacuum device 11.
次に、上記エゼクター制御手段１５は、水圧自
動弁V4と真空用自動弁V5を空気圧で同時に作動
させる空気配管２１に電磁切替弁２２が介装さ
れ、止め弁V10を介して供給される操作空気（２
Kg／cm2）が、電磁切替弁２２のａ位置では停めら
れ、ｂ位置では弁V4，V5に供給されるようにな
る。 Next, the ejector control means 15 has an electromagnetic switching valve 22 interposed in an air pipe 21 that simultaneously operates an automatic water pressure valve V 4 and an automatic vacuum valve V 5 using air pressure, and is supplied via a stop valve V 10 . operation air (2
Kg/cm 2 ) is stopped at the a position of the electromagnetic switching valve 22, and is supplied to the valves V 4 and V 5 at the b position.
上記電磁切替弁２２は、圧力スイツチ２３と止
め弁V11を介して上記真空タンク１３に連結さ
れ、圧力スイツチ２３により真空タンク１３の真
空度（負圧）が−400〜−700mmＨｇとなるように
電磁切替弁２２を切替作動させる。 The electromagnetic switching valve 22 is connected to the vacuum tank 13 via a pressure switch 23 and a stop valve V11 , and the pressure switch 23 controls the degree of vacuum (negative pressure) of the vacuum tank 13 to be between -400 and -700 mmHg. The electromagnetic switching valve 22 is operated to switch.
エゼクター制御手段１５は、第４図に示すよう
に、電磁切替弁２２を省略し、圧力スイツチ２３
に代えて圧力調節計２４を設けると共に、真空用
自動弁V5に代えて逆止弁V12を設け、操作電気に
より水圧自動弁V4を作動させる構成としてもよ
い。これにより省エネルギー（操作空気）が図れ
る。 The ejector control means 15, as shown in FIG.
A pressure regulator 24 may be provided in place of the automatic vacuum valve V5, a check valve V12 may be provided in place of the automatic vacuum valve V5 , and the automatic water pressure valve V4 may be operated by operating electricity. This saves energy (operating air).
上記のように真空装置１１を構成すれば、起動
により、圧力スイツチ２３により真空タンク１３
内の圧力が検知され、−400mmＨｇ以上であれば電
磁弁２２がオンとなり、ドライブ用水圧自動弁
V4及び真空用自動弁V5は開となる（但しV3−
V11は開となつているものとする）。 If the vacuum device 11 is configured as described above, the vacuum tank 13 is activated by the pressure switch 23 upon startup.
The internal pressure is detected, and if it is over -400mmHg, the solenoid valve 22 is turned on and the automatic drive water pressure valve is activated.
V 4 and automatic vacuum valve V 5 are open (however, V 3 -
V 11 is assumed to be open).
V4及びV5の開によつて、高圧水がエゼクター
１２に入り、その流速によつてV5側、即ちタン
ク１３のガス・ドレン混合体を吸引し排水してい
く。この吸引によつてタンク１３の圧力は−700
mmHgに達し、圧力スイツチ２３によつて検知さ
れ電磁弁２２を閉じる。 When V 4 and V 5 are opened, high-pressure water enters the ejector 12, and its flow rate suctions and drains the gas/drain mixture from the V 5 side, that is, the tank 13. Due to this suction, the pressure in tank 13 is -700
mmHg is detected by the pressure switch 23 and the solenoid valve 22 is closed.
以上の動作を繰り返し行い、タンク１３の圧力
は−400〜−700mmＨｇに保たれる。 By repeating the above operations, the pressure in the tank 13 is maintained at -400 to -700 mmHg.
一方、タンク１３内圧力は−400〜−700mmＨｇ
と高真空になつており、真空用減圧弁V7よつて、
ブラダー配管１７の圧力は−150mmＨｇ±−50mm
Ｈｇにコントロールされており、プレス負荷はプ
レスオープン時に開となりブラダー配管１７に変
動を与える。変動圧によつて減圧弁V7はコント
ロールされる。これに従つてタンク１３の圧力も
変動し−400mmＨｇ以上になれば電磁切替弁２２
はオンとなり弁V4，V5は開となり先の動作に入
る。 On the other hand, the pressure inside tank 13 is -400 to -700mmHg
It has become a high vacuum, and with the vacuum pressure reducing valve V7 ,
The pressure of bladder piping 17 is -150mmHg±-50mm
Hg is controlled, and the press load is opened when the press is opened, causing fluctuations in the bladder piping 17. The pressure reducing valve V 7 is controlled by the varying pressure. Accordingly, the pressure in the tank 13 also changes, and if it becomes -400 mmHg or more, the electromagnetic switching valve 22
is turned on, valves V 4 and V 5 are opened, and the next operation begins.
このようにして、エゼクター制御手段１５によ
り、真空タンク１３の負圧が常に所定値となるよ
うに制御され真空安定度が向上する。 In this way, the ejector control means 15 controls the negative pressure in the vacuum tank 13 to always be at a predetermined value, improving vacuum stability.
真空タンク１３の負圧は減圧手段１４を介して
所定値−150mmＨｇ（±−50mmＨｇ）に減圧され
て、ブラダー配管１７からブラダー分岐配管２０
−１〜２０−１０に分岐され、各加硫機１０−１
〜１０−１０のブラダーに供給されるようにな
る。 The negative pressure in the vacuum tank 13 is reduced to a predetermined value of -150 mmHg (±-50 mmHg) via the pressure reducing means 14, and the pressure is reduced from the bladder pipe 17 to the bladder branch pipe 20.
-1 to 20-10, each vulcanizer 10-1
~10-10 bladders will be fed.
以上の説明からも明らかなように、本発明は、
エゼクターに対して、小型真空タンク、減圧手
段、エゼクター制御手段を設けた真空装置である
から、設備コストが安く保守管理も容易であると
共に、真空安定度が向上し、真空度の減圧もでき
るのでブラダーの耐久性も向上するようになる。
As is clear from the above explanation, the present invention
This vacuum device is equipped with a small vacuum tank, pressure reduction means, and ejector control means for the ejector, so equipment costs are low and maintenance is easy, and vacuum stability is improved and the degree of vacuum can be reduced. The durability of the bladder will also be improved.
第１図ａ及び第１図ｂは従来の真空装置の回路
図、第２図は本発明に係る真空装置の回路図、第
３図は減圧手段の変形例の回路図、第４図はエゼ
クター制御手段の変形例の回路図である。
１０−１〜１０−１０……タイヤ加硫機、１１
……真空装置、１２……エゼクター、１３……真
空タンク、１４……減圧手段、１５……エゼクタ
ー制御手段、１６……負圧配管、１７……ブラダ
ー分岐配管。
1a and 1b are circuit diagrams of a conventional vacuum device, FIG. 2 is a circuit diagram of a vacuum device according to the present invention, FIG. 3 is a circuit diagram of a modification of the pressure reducing means, and FIG. 4 is a circuit diagram of an ejector. FIG. 6 is a circuit diagram of a modification of the control means. 10-1 to 10-10...Tire vulcanizer, 11
... Vacuum device, 12 ... Ejector, 13 ... Vacuum tank, 14 ... Pressure reduction means, 15 ... Ejector control means, 16 ... Negative pressure piping, 17 ... Bladder branch piping.
Claims (1)
ラダー引込みのための負圧を供給する真空装置で
あつて、 エゼクターと該エゼクターの負圧配管に連結さ
れる真空タンクと、該真空タンクから上記加硫機
に負圧を供給する経路の途中に介設され、真空タ
ンクによつて供給される負圧を所定値まで減圧す
る減圧手段と、上記真空タンクと上記エゼクター
の高圧水供給配管との間に介装され、高圧水の供
給を制御して真空タンク内の負圧を所定値に維持
するエゼクター制御手段とを備えたことを特徴と
するタイヤ加硫機用真空装置。[Scope of Claims] 1. A vacuum device that supplies negative pressure for discharging drain in the bladder of a tire vulcanizer and retracting the bladder, comprising an ejector and a vacuum tank connected to the negative pressure piping of the ejector; a pressure reducing means interposed in a path for supplying negative pressure from the vacuum tank to the vulcanizer and reducing the negative pressure supplied by the vacuum tank to a predetermined value; and a high pressure between the vacuum tank and the ejector. A vacuum device for a tire vulcanizer characterized by comprising an ejector control means interposed between the water supply piping and controlling the supply of high-pressure water to maintain the negative pressure in the vacuum tank at a predetermined value. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1220883A JPS59155025A (en) | 1983-01-27 | 1983-01-27 | Vacuum apparatus for tyre vulcanizing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1220883A JPS59155025A (en) | 1983-01-27 | 1983-01-27 | Vacuum apparatus for tyre vulcanizing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59155025A JPS59155025A (en) | 1984-09-04 |
| JPH0464847B2 true JPH0464847B2 (en) | 1992-10-16 |
Family
ID=11798963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1220883A Granted JPS59155025A (en) | 1983-01-27 | 1983-01-27 | Vacuum apparatus for tyre vulcanizing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59155025A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070768C (en) * | 1995-01-31 | 2001-09-12 | 不二商事株式会社 | Tire vulcanizing apparatus |
| JP4624606B2 (en) * | 2001-08-10 | 2011-02-02 | 株式会社テイエルブイ | Steam vulcanizer |
-
1983
- 1983-01-27 JP JP1220883A patent/JPS59155025A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59155025A (en) | 1984-09-04 |
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