JP2016088692A - Seal structure between vibrator trough and upper chute - Google Patents

Seal structure between vibrator trough and upper chute Download PDF

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JP2016088692A
JP2016088692A JP2014225063A JP2014225063A JP2016088692A JP 2016088692 A JP2016088692 A JP 2016088692A JP 2014225063 A JP2014225063 A JP 2014225063A JP 2014225063 A JP2014225063 A JP 2014225063A JP 2016088692 A JP2016088692 A JP 2016088692A
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upper chute
rubber plate
vibrator
trough
hollow bent
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JP6287764B2 (en
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大野　泰嗣
Yasutsugu Ono
泰嗣 大野
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Sintokogio Ltd
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Sintokogio Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a seal structure between a vibrator trough and an upper chute capable of securing sealability for a long term without a malfunction caused by the sagging of a rubber plate and the increase of a reaction force while using the inexpensive rubber plate.SOLUTION: The base part of a seal consisting of a rubber plate having a hollow bent part is fixed to a vibrator trough with a pressing plate where a corner part being in contact with the rubber plate is chamfered. The hollow bent part is elastically brought into contact with an upper chute. The rubber plate may be a molded article and compressed air and an elastic material can be filled in the hollow bent part.SELECTED DRAWING: Figure 2a

Description

本発明は、振動機の振動により発生する粉塵が上部シュート（ホッパ）との隙間から吹き漏れることを防止する振動機トラフと上部シュートとのシール構造に関するものである。   The present invention relates to a seal structure of a vibrator trough and an upper chute that prevents dust generated by vibration of the vibrator from being blown out from a gap with an upper chute (hopper).

例えば鋳物砂の搬送には、特許文献１に示されるような振動コンベヤが用いられている。また鋳造品と鋳物砂とを分離するためにも、振動機が使用されている。このような振動機は上部シュート（ホッパ）を備えており、上部シュートから鋳物砂等を振動機トラフに供給する構造となっている。このため振動機トラフと上部シュートとの間を適切にシールしないと、振動機の振動により発生する粉塵の吹き漏れが発生する。   For example, a vibrating conveyor as shown in Patent Document 1 is used for transporting foundry sand. A vibrator is also used to separate the casting from the foundry sand. Such a vibrator is provided with an upper chute (hopper), and has a structure in which casting sand or the like is supplied from the upper chute to the vibrator trough. For this reason, if the gap between the vibrator trough and the upper chute is not properly sealed, dust leakage caused by vibration of the vibrator occurs.

そこで従来から図４ａに示すように、振動機トラフ５１と上部シュート５２との間をシールするために、振動機トラフ５１の上縁５３にゴム板５４を取付け、その先端を上部シュート５２の側面に弾性的に押し当てる構造が用いられている。また図５に示すように、振動機トラフ５１と上部シュート５２との間を帆布５５によりつないでシールすることも行われている。さらに図６に示すように、振動機トラフ５１と上部シュート５２に丸棒５６を溶接し、ゴム板５７の両端をＣ形に成形されたゴム部材５８によって丸棒５６、５６に取付けた構造も用いられている。   Conventionally, as shown in FIG. 4 a, in order to seal between the vibrator trough 51 and the upper chute 52, a rubber plate 54 is attached to the upper edge 53 of the vibrator trough 51, and the tip is attached to the side surface of the upper chute 52. A structure that elastically presses against the surface is used. In addition, as shown in FIG. 5, the vibrator trough 51 and the upper chute 52 are connected by a canvas 55 and sealed. Further, as shown in FIG. 6, a structure in which a round bar 56 is welded to the vibrator trough 51 and the upper chute 52 and both ends of the rubber plate 57 are attached to the round bars 56 and 56 by rubber members 58 formed in a C shape. It is used.

しかし図４のシール構造では、ゴム板５４が薄すぎると図４ｂのようにゴム板５４が自重により垂れ下がり、ゴム板５４と上部シュート５２との間に隙間が生じ、その隙間から発塵するおそれがある。逆に図４ｃのようにゴム板５４が厚すぎると、ゴム板５４の反力により振動機の加振力を上部シュート５２に強力に伝えるため、振動モータを使用せず偏心軸を使用して機械的に振動を発生する振動機の駆動部や、上部シュート５２の取付部を破損してしまう可能性があった。   However, in the seal structure of FIG. 4, if the rubber plate 54 is too thin, the rubber plate 54 hangs down due to its own weight as shown in FIG. 4B, and a gap is generated between the rubber plate 54 and the upper chute 52, and dust may be generated from the gap. There is. On the other hand, if the rubber plate 54 is too thick as shown in FIG. 4c, the vibration force of the vibrator is strongly transmitted to the upper chute 52 by the reaction force of the rubber plate 54, so that the eccentric shaft is used without using the vibration motor. There is a possibility that the drive part of the vibrator that generates vibration mechanically or the attachment part of the upper chute 52 may be damaged.

また図５のシール構造では、帆布５５を取付けている押え板５９、振動機トラフ５１、上部シュート５２等が帆布５５と擦れ合うため、あるいは帆布５５自体が擦れ合うため、長期間使用すると帆布５５に穴あきが生じ、発塵する場合があった。さらに図６のシール構造は複雑であり、Ｃ形に成形されたゴム部材５８を少量購入しようとするとコスト高になり、多品種少量生産に適用しにくいという欠点があった。   Further, in the seal structure shown in FIG. 5, the press plate 59, the vibrator trough 51, the upper chute 52 and the like to which the canvas 55 is attached rub against the canvas 55, or the canvas 55 itself rubs. There was a case where dust was generated due to perforations. Further, the seal structure shown in FIG. 6 is complicated, and there is a drawback in that it is difficult to apply the rubber member 58 molded in the C shape to a large variety of small-quantity production because the cost becomes high when an attempt is made to purchase a small amount.

実公昭３４−８８５２号公報Japanese Utility Model Publication No. 34-8852

従って本発明の目的は上記した従来の問題点を解決して、安価なゴム板を使用しながら、ゴム板の垂れ下がりや反力増加による不具合がなく、長期間にわたってシール性を確保できる振動機トラフと上部シュートとのシール構造を提供することである。   Accordingly, an object of the present invention is to solve the above-mentioned conventional problems, and while using an inexpensive rubber plate, there is no problem due to the drooping of the rubber plate or an increase in the reaction force, and a vibrator trough that can ensure a sealing property over a long period of time. And providing a seal structure with the upper chute.

上記の課題を解決するためになされた本発明の振動機トラフと上部シュートとのシール構造は、振動機トラフに、中空屈曲部を持つゴム板からなるシールの基部を、ゴム板と当たる角部を面取りした押え板により固定し、この中空屈曲部を上部シュートに弾性的に当接させたことを特徴とするものである。   The seal structure of the vibrator trough and the upper chute of the present invention made to solve the above-mentioned problem is that the base portion of the seal made of a rubber plate having a hollow bent portion is placed on the vibrator trough, and the corner portion that contacts the rubber plate. Is fixed by a chamfered pressing plate, and this hollow bent portion is elastically brought into contact with the upper chute.

なお請求項２のように、上部シュートが側面から張出したフランジ部を備えたものであり、中空屈曲部を上部シュートの側面とこのフランジ部の下部とに弾性的に当接させた構造とすることができる。あるいは請求項３のように、中空屈曲部をこのフランジ部の下部のみに弾性的に当接させた構造とすることもできる。   As in claim 2, the upper chute is provided with a flange portion projecting from the side surface, and the hollow bent portion is elastically brought into contact with the side surface of the upper chute and the lower portion of the flange portion. be able to. Alternatively, a structure in which the hollow bent portion is elastically brought into contact with only the lower portion of the flange portion as in the third aspect can be adopted.

さらに、請求項４のように中空屈曲部を持つゴム板からなるシールをゴムの成形品とすることができ、請求項５のように中空屈曲部の内部に圧縮空気を充填したり、請求項６のように、中空屈曲部の内部に弾性材料を充填したりすることができる。   Furthermore, a seal made of a rubber plate having a hollow bent portion as in claim 4 can be a rubber molded product, and the hollow bent portion is filled with compressed air as in claim 5, or As in 6, the elastic material can be filled into the hollow bent portion.

本発明の振動機トラフと上部シュートとのシール構造は、振動機トラフに、中空屈曲部を持つゴム板からなるシールの基部をゴム板と当たる角部を面取りした押え板により固定し、この中空屈曲部を上部シュートに弾性的に当接させた構造であるから、中空屈曲部の弾性を利用して常に適切な押付力を維持することができ、かつ図４のような線接触ではなく面接触となるため、長期間にわたり安定したシール性を確保することができる。また過大な反力が生ずることもないため、振動機の駆動部や、上部シュートの取付部を破損してしまうこともない。さらに安価なゴム板を使用しているため、低コストで製作可能である。   The seal structure of the vibrator trough and the upper chute according to the present invention is such that the base portion of the seal made of a rubber plate having a hollow bent portion is fixed to the vibrator trough by a presser plate having a chamfered corner that contacts the rubber plate. Since the bent portion is elastically brought into contact with the upper chute, an appropriate pressing force can always be maintained by utilizing the elasticity of the hollow bent portion, and the surface is not a line contact as shown in FIG. Because of the contact, a stable sealing property can be ensured over a long period of time. Further, since an excessive reaction force is not generated, the drive unit of the vibrator and the mounting portion of the upper chute are not damaged. Furthermore, since an inexpensive rubber plate is used, it can be manufactured at a low cost.

なお、中空屈曲部を上部シュートの側面とこのフランジ部の下部とに弾性的に当接させた構造とすれば、２カ所で接触させることができるため、シール性の向上を図ることができる。   If the hollow bent portion is elastically brought into contact with the side surface of the upper chute and the lower portion of the flange portion, the hollow bent portion can be brought into contact at two places, so that the sealing performance can be improved.

また中空屈曲部を持つゴム板からなるシールをゴムの成形品とし、その内部に圧縮空気を充填したり弾性材料を充填したりすれば、上部シュートへの押付力を適正に調整することができる。   Moreover, if the seal made of a rubber plate having a hollow bent part is a rubber molded product, and the inside is filled with compressed air or an elastic material, the pressing force on the upper chute can be adjusted appropriately. .

振動機トラフと上部シュートとの取り合い関係を示す正面図である。It is a front view which shows the relationship between a vibrator trough and an upper chute. 振動機トラフと上部シュートとの取り合い関係を示す側面断面図である。It is side surface sectional drawing which shows the relationship between a vibrator trough and an upper chute. 本発明の第１の実施形態を示す側面断面図である。It is side surface sectional drawing which shows the 1st Embodiment of this invention. 本発明の第２の実施形態を示す側面断面図である。It is side surface sectional drawing which shows the 2nd Embodiment of this invention. 本発明の第３の実施形態を示す側面断面図である。It is side surface sectional drawing which shows the 3rd Embodiment of this invention. 中空屈曲部を持つゴム板からなるシールの拡大側面断面図である。It is an expanded side sectional view of the seal which consists of a rubber plate with a hollow bent part. 中空屈曲部を持つゴム板からなるシールをゴムの成形品とした場合の側面断面図である。It is side surface sectional drawing at the time of making the seal | sticker which consists of a rubber plate with a hollow bending part into the molded article of rubber | gum. 従来例を示す側面断面図である。It is side surface sectional drawing which shows a prior art example. 従来例の問題点を説明する側面断面図である。It is side surface sectional drawing explaining the problem of a prior art example. 従来例の他の問題点を説明する側面断面図である。It is side surface sectional drawing explaining the other problem of a prior art example. 他の従来例を示す側面断面図である。It is side surface sectional drawing which shows another prior art example. 更に他の従来例を示す側面断面図である。It is side surface sectional drawing which shows another prior art example.

以下に本発明の実施形態を説明する。
図１ａは振動機トラフと上部シュートとの取り合い関係を示す正面図、図１ｂはその側面断面図である。これらの図において、１は振動機である振動コンベヤであり、２はその上方に設けられた上部シュート（ホッパ）である。振動コンベヤ１の上部には粉粒体を搬送する振動機トラフ３が設けられ、下側にはカウンターウエイト４が設けられている。振動コンベヤ１とカウンターウエイト４とは、複数の平行リンク５とスプリング６とによって接続されている。 Embodiments of the present invention will be described below.
FIG. 1a is a front view showing the relationship between the vibrator trough and the upper chute, and FIG. 1b is a side sectional view thereof. In these drawings, reference numeral 1 denotes a vibrating conveyor as a vibrator, and 2 denotes an upper chute (hopper) provided above the vibrating conveyor. A vibrator trough 3 for conveying powder particles is provided at the upper part of the vibration conveyor 1, and a counterweight 4 is provided at the lower side. The vibrating conveyor 1 and the counterweight 4 are connected by a plurality of parallel links 5 and springs 6.

カウンターウエイト４には偏心軸７の両端を支持する軸受８が設けられており、偏心軸７の偏心部を板バネ９を介して振動機トラフ３に接続している。偏心軸７を軸の端部に取付けたＶプーリ１０、Ｖベルト１１、Ｖプーリ１２を介してモータ１３で回転させることにより、振動機トラフ３を振動させる。振動の方向は搬送物を持ち上げる方向であり、鋳物砂等の粉粒体は振動機トラフ３上を搬送されることとなる。   The counterweight 4 is provided with a bearing 8 that supports both ends of the eccentric shaft 7, and the eccentric portion of the eccentric shaft 7 is connected to the vibrator trough 3 via a leaf spring 9. The vibrator trough 3 is vibrated by rotating the eccentric shaft 7 with a motor 13 via a V pulley 10, a V belt 11, and a V pulley 12 attached to the end of the shaft. The direction of vibration is the direction in which the conveyed product is lifted up, and powder particles such as foundry sand are conveyed on the vibrator trough 3.

図１ｂに示すように、上部シュート２の下端は振動機トラフ３の上部開口部に差し込まれるように設置されている。図１ｂでは上部シュート２の下端と振動機トラフ３との間をシールするために図４ａに示した平板状のゴム板５４を取付けた状態が示されているが、本発明では以下の図２〜図３に示す構造のシールが用いられる。   As shown in FIG. 1 b, the lower end of the upper chute 2 is installed so as to be inserted into the upper opening of the vibrator trough 3. FIG. 1b shows a state where the flat rubber plate 54 shown in FIG. 4a is attached to seal between the lower end of the upper chute 2 and the vibrator trough 3, but in the present invention, the following FIG. A seal having the structure shown in FIG. 3 is used.

図２ａは本発明の第１の実施形態を示す側面断面図である。１４ａは第１の実施形態で用いられるシールである。このシール１４ａは帯状のゴム板１５を長手方向に二つ折りにし、中空屈曲部１６を形成したものである。このシール１４ａの重ね合わせた基部が、押え板２２により振動機トラフ３の上縁に固定されている。図２ｄに示すように、押え板２２はゴム板１５と当たる角部２２ａを円弧状に面取りし、ゴム板１５の損傷を防止した構造となっている。   FIG. 2a is a side cross-sectional view showing the first embodiment of the present invention. 14a is a seal used in the first embodiment. This seal 14 a is formed by folding a belt-shaped rubber plate 15 in the longitudinal direction to form a hollow bent portion 16. The overlapped base portion of the seal 14 a is fixed to the upper edge of the vibrator trough 3 by a presser plate 22. As shown in FIG. 2d, the presser plate 22 has a structure in which a corner 22a that contacts the rubber plate 15 is chamfered in an arc shape to prevent the rubber plate 15 from being damaged.

図２ａに示すように、上部シュート２は側面から張出したフランジ部１８を備えたものであり、シール１４ａの中空屈曲部１６を上部シュート２の側面１７とこのフランジ部１８の下部との双方に弾性的に当接させた構造となっている。このようなシール構造を採用すれば、中空屈曲部１６は二ヵ所で上部シュート２に当接し、しかも当接部は面接触となる。このため確実なシール性を確保することができる。このためシール不良による発塵のおそれがない。またこのシール１４ａは安価なゴム板１５を二つ折りにすることにより製作できるので、低コストである。   As shown in FIG. 2a, the upper chute 2 is provided with a flange portion 18 protruding from the side surface, and the hollow bent portion 16 of the seal 14a is provided on both the side surface 17 of the upper chute 2 and the lower portion of the flange portion 18. It has a structure that is elastically contacted. If such a seal structure is employed, the hollow bent portion 16 comes into contact with the upper chute 2 at two locations, and the contact portion is in surface contact. For this reason, reliable sealing performance can be ensured. For this reason, there is no fear of dust generation due to poor sealing. The seal 14a can be manufactured by folding an inexpensive rubber plate 15 in half, so that the cost is low.

図２ｂは本発明の第２の実施形態を示す側面断面図である。この実施形態ではフランジ部１８はなく、シール１４ｂの中空屈曲部１６を上部シュート２の側面１７のみに弾性的に当接させた構造となっている。また図２ｃに示す第３の実施形態のように、シール１４ｃの中空屈曲部１６を上部シュート２のフランジ部１８の下面のみに、弾性的に当接させる構造としてもよい。これらの第２、第３の実施形態では上部シュート２との当接部は片側のみであるが、第１の実施形態とほぼ同様の作用効果を得ることができる。   FIG. 2b is a side cross-sectional view showing a second embodiment of the present invention. In this embodiment, there is no flange portion 18, and the hollow bent portion 16 of the seal 14 b is elastically brought into contact with only the side surface 17 of the upper chute 2. Moreover, it is good also as a structure which makes the hollow bending part 16 of the seal | sticker 14c elastically contact | abut only to the lower surface of the flange part 18 of the upper chute 2 like 3rd Embodiment shown in FIG. In these second and third embodiments, the contact portion with the upper chute 2 is only on one side, but it is possible to obtain substantially the same operational effects as in the first embodiment.

図３に示す第４の実施形態では、中空屈曲部１６を持つゴム板からなるシール１４ｄが、ゴムの一体成形品１９となっている。この一体成形品１９も帯状のゴム板を長手方向に二つ折りにし、中空屈曲部１６を形成した形状であるが、中空屈曲部１６の長手方向の両端部が封止されている。このシール１４ｄはそのままで、上記した実施形態と同様に用いることができる。しかし、中空部２０に圧縮空気を充填することができる構造となっているため、圧縮空気圧を調整することによって上部シュート２への当接力を自由に調整することができる利点がある。   In the fourth embodiment shown in FIG. 3, a seal 14 d made of a rubber plate having a hollow bent portion 16 is an integrally molded product 19 of rubber. This integrally molded product 19 also has a shape in which a belt-like rubber plate is folded in half in the longitudinal direction to form a hollow bent portion 16, but both ends in the longitudinal direction of the hollow bent portion 16 are sealed. The seal 14d can be used as it is, as in the above-described embodiment. However, since the hollow portion 20 can be filled with compressed air, there is an advantage that the contact force to the upper chute 2 can be freely adjusted by adjusting the compressed air pressure.

このほか、中空部２０に反発性のある弾性材料を充填することによっても、上部シュート２への当接力を自由に調整することができる。反発性のある弾性材料としてはゴムのほか、ウレタンの発泡成形体等を用いることもできる。なおこのような弾性材料の充填は、実施形態１、２、３のようなゴム板１５を折り曲げた空隙２１に対して行うことも可能である。   In addition, the contact force to the upper chute 2 can be freely adjusted by filling the hollow portion 20 with an elastic material having resilience. As an elastic material having resilience, urethane foamed molded bodies and the like can be used in addition to rubber. Such filling of the elastic material can also be performed in the gap 21 obtained by bending the rubber plate 15 as in the first, second, and third embodiments.

以上に説明したように、本発明の振動機トラフと上部シュートとのシール構造は、安価でありながら長期間にわたってシール性を確保することができるものである。   As described above, the sealing structure of the vibrator trough and the upper chute according to the present invention is inexpensive and can ensure sealing performance over a long period of time.

１ 振動機である振動コンベヤ
２ 上部シュート（ホッパ）
３ 振動機トラフ
４ カウンターウエイト
５ 平行リンク
６ スプリング
７ 偏心軸
８ 軸受
９ 板バネ
１０ Ｖプーリ
１１ Ｖベルト
１２ Ｖプーリ
１３ モータ
１４ａ １４ｂ １４ｃ １４ｄ シール
１５ ゴム板
１６ 中空屈曲部
１７ 側面
１８ フランジ部
１９ 一体成形品
２０ 中空部
２１ 空隙
２２ 押え板
２２ａ 角部 1 Vibrating conveyor that is a vibrator 2 Upper chute (hopper)
3 Vibrator trough 4 Counterweight 5 Parallel link 6 Spring 7 Eccentric shaft 8 Bearing 9 Leaf spring 10 V pulley 11 V belt 12 V pulley 13 Motor 14a 14b 14c 14d Seal 15 Rubber plate 16 Hollow bent portion 17 Side surface 18 Flange portion 19 Integrated Molded product 20 Hollow part 21 Cavity 22 Presser plate 22a Corner part

Claims (6)

振動機トラフに、中空屈曲部を持つゴム板からなるシールの基部を、ゴム板と当たる角部を面取りした押え板により固定し、この中空屈曲部を上部シュートに弾性的に当接させたことを特徴とする振動機トラフと上部シュートとのシール構造。   The base part of the seal made of a rubber plate with a hollow bent part is fixed to the vibrator trough with a presser plate whose corners that contact the rubber plate are chamfered, and this hollow bent part is elastically brought into contact with the upper chute. Seal structure of vibrator trough and upper chute characterized by 上部シュートが側面から張出したフランジ部を備えたものであり、中空屈曲部を上部シュートの側面とこのフランジ部の下部とに弾性的に当接させたことを特徴とする請求項１記載の振動機トラフと上部シュートとのシール構造。   2. The vibration according to claim 1, wherein the upper chute includes a flange portion projecting from a side surface, and the hollow bent portion is elastically brought into contact with a side surface of the upper chute and a lower portion of the flange portion. Seal structure between machine trough and upper chute. 上部シュートが側面から張出したフランジ部を備えたものであり、中空屈曲部をこのフランジ部の下部のみに弾性的に当接させたことを特徴とする請求項１記載の振動機トラフと上部シュートとのシール構造。   2. The vibrator trough and the upper chute according to claim 1, wherein the upper chute includes a flange portion projecting from a side surface, and the hollow bent portion is elastically brought into contact with only the lower portion of the flange portion. And seal structure. 中空屈曲部を持つゴム板からなるシールが、ゴムの成形品であることを特徴とする請求項１記載の振動機トラフと上部シュートとのシール構造。   2. The seal structure of the vibrator trough and the upper chute according to claim 1, wherein the seal made of a rubber plate having a hollow bent portion is a molded product of rubber. 中空屈曲部の内部に、圧縮空気を充填したことを特徴とする請求項４記載の振動機トラフと上部シュートとのシール構造。   5. The seal structure between a vibrator trough and an upper chute according to claim 4, wherein the hollow bent portion is filled with compressed air. 中空屈曲部の内部に、弾性材料を充填したことを特徴とする請求項１〜３の何れかに記載の振動機トラフと上部シュートとのシール構造。   The seal structure of the vibrator trough and the upper chute according to any one of claims 1 to 3, wherein an elastic material is filled in the hollow bent portion.
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US5193823A (en) * 1988-05-05 1993-03-16 Mannesmann Aktiengesellschaft Resilient metallic sealing member
JP2000054350A (en) * 1998-08-04 2000-02-22 Bridgestone Corp Mounting bracket and flexible film enlarging and shrinking structural body
JP2000110184A (en) * 1998-10-02 2000-04-18 Sumitomo Rubber Ind Ltd Rubber gasket
JP2001012183A (en) * 1999-07-02 2001-01-16 Bridgestone Corp Seal structure of drift start/arrival for starting/ arriving shield machine
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