JPS5948136B2 - Floating weight control device in internal mixer - Google Patents
Floating weight control device in internal mixerInfo
- Publication number
- JPS5948136B2 JPS5948136B2 JP54168891A JP16889179A JPS5948136B2 JP S5948136 B2 JPS5948136 B2 JP S5948136B2 JP 54168891 A JP54168891 A JP 54168891A JP 16889179 A JP16889179 A JP 16889179A JP S5948136 B2 JPS5948136 B2 JP S5948136B2
- Authority
- JP
- Japan
- Prior art keywords
- floating weight
- piston
- switching valve
- control device
- piston rod
- 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
- 238000004260 weight control Methods 0.000 title claims description 4
- 238000004898 kneading Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- 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
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
- B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
-
- 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
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
- B29B7/283—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring data of the driving system, e.g. torque, speed, power
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
【発明の詳細な説明】
インターアルミキサは原料ゴムを柔かくしたり、カーボ
ンやサルファ等の薬品と混練するために使用されるもの
で、第１図に示す如く２本のロータ１を中心に左右のミ
キシングチャンバ２、上部のフローティングウェイト３
、下部のディスチャージドア４とにより構成されている
。[Detailed Description of the Invention] The interalumixer is used to soften raw rubber and mix it with chemicals such as carbon and sulfur. mixing chamber 2, upper floating weight 3
, and a lower discharge door 4.
原料ゴム等の被混線材は、フローテイングウエ。The wire material to be mixed such as raw rubber is a floating wire.
イト３が上限にあり、ディスチャージドア４が閉鎖され
ている状態でミキシングチャンバ２内に投入される。そ
して所定量投入後フローティングウェイト３は下降する
。ミキシングチャンバ２内に投入された被混線材は、フ
ローティングウェイト３に直結された押付用空圧シリン
ダ５のピストン６及びピストンロッド７により同フロー
ティングウェイト３を介して押圧されながら、２本のロ
ータ１、１により混練される。次に第２図及び第３図に
より゛フローティングウェイト３の作動を説明する。The light source 3 is placed in the mixing chamber 2 with the discharge door 4 at the upper limit and the discharge door 4 closed. After adding a predetermined amount, the floating weight 3 descends. The material to be mixed introduced into the mixing chamber 2 is pressed by the piston 6 and piston rod 7 of the pressing pneumatic cylinder 5 directly connected to the floating weight 3, while being pressed by the two rotors 1 , 1. Next, the operation of the floating weight 3 will be explained with reference to FIGS. 2 and 3.
フローティングウェイト３は、切替弁８が図示しない圧
縮空気源に入の状態、切替弁９が大気に出の状態で電気
−空気パイロット式により接続されると、ピストン６及
びピストンロッド７を介して下降を開始する。ピストン
６の下面がクッション用内輪１０ａを有するシリンダ底
板１０の同クッション用内輪１０ａの上面に達すると、
内輪１０ａ外面の排出空気はスピードコントロール弁１
１により絞られ、同ピストン６にはクッション効果が与
えられながら低速にて下降する。なお、第２図に於ける
１３は上限検出用リミットスイッチ、１４は下限検出用
リミットスイッチ、１５はリミットスイッチ作動部材で
ある。さて前述のような通常のフローティングウェイト
下降時には不具合はないが、フローティングウェイト３
が下降板に到達した後に発生する被混線材のロータ１に
よる混練負荷によつて、フローティングウェイト３がウ
ェイト押付用空圧シリンダ５の荷重に抗して上昇する場
合には、次のような不具合が発生する。The floating weight 3 descends via the piston 6 and piston rod 7 when connected by an electric-pneumatic pilot type with the switching valve 8 connected to a compressed air source (not shown) and the switching valve 9 vented to the atmosphere. Start. When the lower surface of the piston 6 reaches the upper surface of the cushion inner ring 10a of the cylinder bottom plate 10 having the cushion inner ring 10a,
The air discharged from the outer surface of the inner ring 10a is supplied to the speed control valve 1.
1, the piston 6 descends at low speed while being given a cushioning effect. In FIG. 2, 13 is a limit switch for detecting an upper limit, 14 is a limit switch for detecting a lower limit, and 15 is a limit switch operating member. Now, there is no problem when descending the normal floating weight as mentioned above, but when floating weight 3
If the floating weight 3 rises against the load of the weight pressing pneumatic cylinder 5 due to the kneading load of the mixed wire material generated by the rotor 1 after it reaches the descending plate, the following problems will occur. occurs.
即ち、この混練荷重によるフローティングウェイト３の
上昇、下降作動は極めて短い時間に於いて行なわれるた
め、（Ａ）、フローティングウェイト３の上昇時にピス
トンロッド７側空間が大気圧以下（負圧）に低下し、原
料供給筒１２内に飛散しているカーボン等が、ピストン
ロッド７とシリンダ底板１０との間に組込まれたグラン
ドパッキン１３の隙間を通してシリンダ５内に混入し、
ピストン６が固着され易くなる欠点があつた。That is, since the raising and lowering operations of the floating weight 3 due to this kneading load are performed in an extremely short time, (A), when the floating weight 3 is raised, the space on the side of the piston rod 7 drops below atmospheric pressure (negative pressure). However, carbon etc. scattered in the raw material supply cylinder 12 enter the cylinder 5 through the gap in the gland packing 13 installed between the piston rod 7 and the cylinder bottom plate 10,
There was a drawback that the piston 6 was likely to become stuck.
（Ｂ）、またフローテイングウエイト３の下降時にも、
ピストンロツド７側空間は大気圧以下（負圧）であるた
め、シリンダ底板１０に付属する内輪１０ａによるクツ
シヨン効果は得られず、ピストン６の下面がシリンダ底
板１０の上面を激打して大きな衝撃音が発生する欠点が
あつた。(B), also when the floating weight 3 is lowered,
Since the pressure in the space on the side of the piston rod 7 is below atmospheric pressure (negative pressure), the cushioning effect of the inner ring 10a attached to the cylinder bottom plate 10 cannot be obtained, and the lower surface of the piston 6 hits the upper surface of the cylinder bottom plate 10, producing a loud impact sound. There was a drawback that this occurred.
しかも以上のような現象は、１パツチの被混線材の混練
時間内に於いて数回から数十回断続的に発生するもので
ある。即ち、フローテイングウエイト３には、混練行程
に於いては常時ピストン６によつて下向きの押，付力が
作用して被混線材を押圧しているが、混練中にロータ１
の回転等による上向きの力が作用して、ピストン６を持
ち上げることがある。その際瞬間的には、シリンダ５の
ピストンロツド側空間に切替弁９を通つた空気が進入で
きず、真空状態（負圧）になる。Moreover, the above-mentioned phenomenon occurs intermittently from several times to several dozen times during the kneading time of one patch of wire material. That is, during the kneading process, the floating weight 3 is constantly subjected to a downward pushing force by the piston 6 to press the wire material to be mixed, but during the kneading process, the rotor 1
The piston 6 may be lifted by an upward force caused by the rotation of the piston 6 or the like. At this time, air passing through the switching valve 9 cannot enter the piston rod side space of the cylinder 5 momentarily, resulting in a vacuum state (negative pressure).
そこで前記（Ａ）に示すような不具合が発生する。また
ピストン６の押上げ状態は、極めて短時間であり、再び
切替弁８からの圧縮空気によりピストン６は押下げられ
るため、前記（Ｂ）に示すような，不具合が生ずる。Therefore, the problem shown in (A) above occurs. Further, the state in which the piston 6 is pushed up is extremely short, and the piston 6 is pushed down again by the compressed air from the switching valve 8, resulting in the problem shown in (B) above.
本発明は前記従来の欠点を解消するために提案されたも
ので、フローテイングウエイト押付用空圧シリンダのピ
ストンロツド側空圧制御系統に、フローテイングウエイ
トの下降限に於いて内圧を，有する空気ボトルと、切替
弁、安全弁及び同切替弁制御用のリミツトスイツチを組
込むことにより、空圧シリンダの固着故障を防止し、か
つ衝撃音の緩和を計ることができるインターナルミキサ
に於けるフローテイングウエイト制御装置を提供せんと
するものである。The present invention has been proposed in order to eliminate the above-mentioned drawbacks of the conventional art. A floating weight control device for an internal mixer that prevents pneumatic cylinder sticking failure and reduces impact noise by incorporating a switching valve, a safety valve, and a limit switch for controlling the switching valve. We aim to provide the following.
以下本発明の実施例を図面について説明する。Embodiments of the present invention will be described below with reference to the drawings.
なお、本発明の実施例を示す第４図に於いて従来の第２
図と同一部分は同一の符号を用いて説明することにする
。図に於いて３はフローテイングウエイト、５はフロー
テイングウエイト押付用空圧シリンダ、６はピストン、
７はピストンロツド、８，９は切替弁、１０はシリンダ
底板、１０ａはクツシヨン用内輪、１１はスピードコン
トロール弁、１３は上限検出用リミツトスイツチ、１４
は下限検出用リミツトスイツチ、１５はリミツトスイツ
チ作動部材、１６はシリンダ上蓋であり、これらは全て
第２図と同じである。次に第４図に於いて第２図と異な
る機構について説明すると、フローテイングウエイト押
付用空圧シリンダ５のスピードコントロール弁１１の接
続口にできるだけ近い位置に切替弁１７及び空気ボトル
１８を組込むと共に、空気ボトル１８への連通管１９の
端部にストツプ弁２０を設けて、これで締切られるよう
にする。In addition, in FIG. 4 showing the embodiment of the present invention, the conventional second
The same parts as in the figures will be explained using the same reference numerals. In the figure, 3 is a floating weight, 5 is a pneumatic cylinder for pressing the floating weight, 6 is a piston,
7 is a piston rod, 8 and 9 are switching valves, 10 is a cylinder bottom plate, 10a is an inner ring for cushioning, 11 is a speed control valve, 13 is a limit switch for upper limit detection, 14
1 is a limit switch for detecting a lower limit, 15 is a limit switch operating member, and 16 is a cylinder top cover, all of which are the same as in FIG. Next, in Fig. 4, a different mechanism from Fig. 2 will be explained.The switching valve 17 and the air bottle 18 are installed as close as possible to the connection port of the speed control valve 11 of the floating weight pressing pneumatic cylinder 5. A stop valve 20 is provided at the end of the communicating pipe 19 to the air bottle 18 so that it can be shut off.
前記切替弁１７は通常切替弁９と連通されるようになつ
ており、フローテイングウエイト３は、ピストンロツド
側空気を切替弁１７及び切替弁９を通過させて下降する
が、第４図の実施例に於いて新たに組込んだ下降限直前
検出用リミツトスイツチ２１が作動すると、切替弁１７
が切替わり、排出空気は空気ボトル１８内に送られ、フ
ローテイングウエイト３の下降と共に空気ボトル１８の
内圧は徐々に高くなり、下降限で最高内圧となる。The switching valve 17 is normally communicated with the switching valve 9, and the floating weight 3 allows the air on the piston rod side to pass through the switching valve 17 and the switching valve 9 to descend. When the newly installed lower limit detection limit switch 21 is activated, the switching valve 17 is activated.
is switched, the discharged air is sent into the air bottle 18, and as the floating weight 3 descends, the internal pressure of the air bottle 18 gradually increases and reaches the maximum internal pressure at the lower limit.
この封入最高内圧は、リミツトスイツチ２１並に安全弁
２２により調整される。なお、本発明に於いて、使用す
る切替弁１７の空気通過抵抗が大きい場合には、第４図
の点線にて示す如くスピードコントロール弁１１と、切
替弁１７との間に空気ボトル１８、安全弁２２及びスト
ツプ弁２０を組込む方がよりその効果は大きい。以上詳
細に説明した如く本発明は、フローテイングウエイトの
下降限に於いてピストンロツド側が内圧（正圧）を・有
する空気ボトルに接続されているので、フローテイング
ウエイトが被混線材のロータによる混練負荷により上昇
した場合には、空気ボトル内に封入されている空気は速
かにピストンロツド側空間に入る。This maximum internal pressure is adjusted by a limit switch 21 and a safety valve 22. In addition, in the present invention, if the air passage resistance of the switching valve 17 to be used is large, an air bottle 18 and a safety valve are installed between the speed control valve 11 and the switching valve 17 as shown by the dotted line in FIG. 22 and the stop valve 20 are more effective. As explained in detail above, in the present invention, at the lower limit of the floating weight, the piston rod side is connected to the air bottle having internal pressure (positive pressure), so that the floating weight is subjected to the kneading load of the material to be mixed by the rotor. When the piston rod rises, the air enclosed in the air bottle quickly enters the piston rod side space.
従つて同空間内の圧力が大気圧以下（負圧）になるよう
なことはないから、フローテイングウエイトが混練負荷
により強制的に下降限から上昇しても、カーボン等の異
物が、グランドパツキンシールの隙間よりシリンダ内（
ご混入するようなことはなく、ピストンが固着されるよ
うな欠点はない。また極く短時間のフローテイングウエ
イトの下降時にも、ピストンロツド側空間の正圧空気圧
によりクツシヨン効果が得られ、ピストンの下面がシリ
ンダ底板の上面を激打することにより発生する衝撃音を
除去することができる。Therefore, the pressure in the same space will never drop below atmospheric pressure (negative pressure), so even if the floating weight is forcibly raised from its lower limit due to the kneading load, foreign substances such as carbon will not reach the gland packing. Inside the cylinder from the seal gap (
There is no chance of contamination, and there is no problem with the piston becoming stuck. In addition, even when the floating weight is lowered for an extremely short period of time, a cushioning effect is obtained by the positive air pressure in the space on the piston rod side, eliminating the impact noise generated when the lower surface of the piston hits the upper surface of the cylinder bottom plate. I can do it.
第１図は従来のインターナルミキサの正面断面図、第２
図は第１図のフローテイングウエイト押圧用空圧シリン
ダの制御系統図、第３図は第２図に於ける要部の拡大図
、第４図は本発明の実施例を示すフローテイングウエイ
ト制御装置に於ける制御系統図である。
図の主要部分の説明、３・・・・・・フローテイングウ
エイト、５・・・・・・フローテイングウエイト押付用
空圧シリンダ、６・・・・・・ピストン、７・・・・・
・ピストンロツド、１７・・・・・・切替弁、１８・・
・・・・空気ボトル、１９・・・・・・連通管、２１・
・・・・・下降直前検出用リミツトスイツチ（切替弁制
御用リミツトスイツチ）、２２・・・・・・安全弁。Figure 1 is a front sectional view of a conventional internal mixer, Figure 2 is a front sectional view of a conventional internal mixer.
The figure is a control system diagram of the pneumatic cylinder for pressing the floating weight shown in Fig. 1, Fig. 3 is an enlarged view of the main part in Fig. 2, and Fig. 4 is a floating weight control showing an embodiment of the present invention. It is a control system diagram in an apparatus. Explanation of the main parts of the figure, 3... Floating weight, 5... Pneumatic cylinder for pressing the floating weight, 6... Piston, 7...
・Piston rod, 17...Switching valve, 18...
...Air bottle, 19...Communication pipe, 21.
... Limit switch for detecting just before descent (limit switch for controlling switching valve), 22 ... Safety valve.
Claims (1)
ティングウェイトが、圧縮空気源からの空気圧により作
動するフローティングウェイト押付用空圧シリンダのピ
ストンロッドに直結されたインターナルミキサに於いて
、前記空圧シリンダのピストンロッド側空圧制御系統に
、前記フローティングウェイトの下降限に於いて内圧を
有する空気ボトルと、切替弁及び安全弁と、同切替弁の
制御用リミットスイッチとを組込んでなることを特徴と
するインターナルミキサに於けるフローティングウェイ
ト制御装置。1 In an internal mixer in which a floating weight that opens and closes an upper opening of a mixing chamber is directly connected to a piston rod of a pneumatic cylinder for pressing a floating weight operated by air pressure from a compressed air source, the piston of the pneumatic cylinder An interface characterized in that the rod side pneumatic control system incorporates an air bottle having an internal pressure at the lower limit of the floating weight, a switching valve, a safety valve, and a limit switch for controlling the switching valve. Floating weight control device in a null mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54168891A JPS5948136B2 (en) | 1979-12-25 | 1979-12-25 | Floating weight control device in internal mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54168891A JPS5948136B2 (en) | 1979-12-25 | 1979-12-25 | Floating weight control device in internal mixer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5691830A JPS5691830A (en) | 1981-07-25 |
| JPS5948136B2 true JPS5948136B2 (en) | 1984-11-24 |
Family
ID=15876477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54168891A Expired JPS5948136B2 (en) | 1979-12-25 | 1979-12-25 | Floating weight control device in internal mixer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948136B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6067134U (en) * | 1983-10-12 | 1985-05-13 | 株式会社神戸製鋼所 | Floating weight actuator for internal kneading machine |
| JPS60189405A (en) * | 1984-03-09 | 1985-09-26 | Kobe Steel Ltd | Actuating device of floating weight of closed type kneading machine |
| US8047701B2 (en) | 2005-07-26 | 2011-11-01 | Kobe Steel, Ltd. | Batch mixer |
| CN114474465B (en) * | 2022-01-27 | 2024-02-02 | 佛山市宜奥科技实业有限公司 | Automatic raw material stirring equipment and method for sponge production |
-
1979
- 1979-12-25 JP JP54168891A patent/JPS5948136B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5691830A (en) | 1981-07-25 |
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