JPH0868685A - Weighing apparatus - Google Patents
Weighing apparatusInfo
- Publication number
- JPH0868685A JPH0868685A JP6226010A JP22601094A JPH0868685A JP H0868685 A JPH0868685 A JP H0868685A JP 6226010 A JP6226010 A JP 6226010A JP 22601094 A JP22601094 A JP 22601094A JP H0868685 A JPH0868685 A JP H0868685A
- Authority
- JP
- Japan
- Prior art keywords
- load
- load cell
- air cylinder
- opening
- air
- 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.)
- Granted
Links
Landscapes
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
- Measurement Of Force In General (AREA)
- Discharge Of Articles From Conveyors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、計量容器に投入された
被計量物の重量をロードセルを用いて測定し、測定が終
了した後、被計量物を計量容器から排出する計量装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighing device for measuring the weight of an object to be weighed in a weighing container using a load cell and discharging the object to be weighed from the weighing container after the measurement is completed.
【０００２】[0002]
【従来の技術】被計量物の重量を測定する方法として、
弾性体の変形を電気抵抗の変化に変換するものがある。
このような原理に基づく荷重の検出器を一般的にロード
セルといわれ、ひずみゲージ式とかストレンゲージ式ロ
ードセルとも呼ばれる。特に図５に示すようなものは、
ロードビームまたはデュアルビーム形といわれ、小荷重
用に適しており、構造が簡単で、かつ小型で動特性が良
いという特徴を持っている。これは荷重を受ける弾性体
（起わい体）２ｄに４個のひずみゲージ２ｃが接着さ
れ、これらのひずみゲージ２ｃでホイートストーンブリ
ッジ回路を構成し、弾性体２ｄの取付側２ａを基体に固
定して負荷側２ｂに荷重をかけて、荷重に比例した抵抗
変化による出力を検出するものである。2. Description of the Related Art As a method for measuring the weight of an object to be weighed,
There is one that converts the deformation of an elastic body into a change in electric resistance.
A load detector based on such a principle is generally called a load cell, and is also called a strain gauge type or a strain gauge type load cell. Especially, as shown in Fig. 5,
It is said to be a load beam or dual beam type, suitable for small loads, and has the features of simple structure, small size, and good dynamic characteristics. This is because four strain gauges 2c are adhered to an elastic body (flexible body) 2d that receives a load, and these strain gauges 2c constitute a Wheatstone bridge circuit, and the mounting side 2a of the elastic body 2d is fixed to a base body. Then, the load is applied to the load side 2b, and the output due to the resistance change proportional to the load is detected.
【０００３】ロードセルを利用した計量装置として、本
願と同一出願人が特開平３−１２３２３３号に開示した
図６に示すようなものがある。これは、ロードセル３１
の取付側を基体３２に固定し、ロードセル３１の負荷側
に一枚の基板３３を取り付けている。この基板３３に、
被計量物を収納して計量する計量ホッパ３４と、被計量
物を計量ホッパ３４に収納、排出する排出扉３５を開閉
するための駆動部３６とを一緒に取り付けてある。被計
量物を計量するときは、計量ホッパ３４の排出扉３５が
閉じられ、被計量物が計量ホッパ３４の中に投入され、
計量が終了したなら排出扉３５を開き計量ホッパ３４か
ら被計量物が排出される。As a weighing device using a load cell, there is one shown in FIG. 6 disclosed in Japanese Patent Application Laid-Open No. 3-123233 by the same applicant as the present application. This is the load cell 31
The mounting side of is fixed to the base 32, and one substrate 33 is mounted on the load side of the load cell 31. On this board 33,
A weighing hopper 34 that stores and weighs an object to be weighed, and a drive unit 36 that opens and closes a discharge door 35 that stores and discharges the object to be weighed in the weighing hopper 34 are attached together. When weighing the object to be weighed, the discharge door 35 of the weighing hopper 34 is closed and the object to be weighed is put into the weighing hopper 34.
When the weighing is completed, the discharge door 35 is opened and the object to be weighed is discharged from the weighing hopper 34.
【０００４】同様にロードセルを利用した計量装置とし
て、本願と同一出願人が特開平４−３６３６３０号に開
示した図７に示すようなものがある。これは、ロードセ
ル３７の取付側を基体３８に固定し、前述の排出扉を備
えた計量ホッパの代わりに筒状部材３９をロードセル３
７の負荷側に取り付けたものである。筒状部材３９の下
側には被計量物を収納、排出するための開閉部材４０が
設けられ、この開閉部材４０はエアシリンダ４１のピス
トン４２に取り付けられた移動機構４３によって水平方
向に移動される。被計量物を計量するときは、筒状部材
３９の下側の開閉部材４０が閉じられ、筒状部材３９の
中に被計量物が投入され、計量が終了したなら開閉部材
４０を移動して筒状部材３９の下側を開放して被計量物
を排出する。Similarly, as a weighing device using a load cell, there is one shown in FIG. 7 disclosed in Japanese Patent Laid-Open No. 4-363630 by the same applicant as the present application. This is because the mounting side of the load cell 37 is fixed to the base body 38, and a tubular member 39 is used instead of the weighing hopper equipped with the discharge door described above.
It is attached to the load side of No. 7. An opening / closing member 40 for accommodating and discharging an object to be weighed is provided below the tubular member 39, and the opening / closing member 40 is horizontally moved by a moving mechanism 43 attached to a piston 42 of an air cylinder 41. It When weighing the object to be weighed, the opening / closing member 40 below the tubular member 39 is closed, the object to be weighed is put into the tubular member 39, and when the weighing is completed, the opening / closing member 40 is moved. The lower side of the tubular member 39 is opened and the object to be weighed is discharged.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、特開平
３−１２３２３３号に開示されたものでは、駆動部３６
の動作方向がロードセル３１の負荷方向と同じなので、
計量ホッパ３４の排出扉３５を開閉する際にロードセル
３１の負荷に変動を与える。また、駆動部３６がロード
セル３１の負荷側に取り付けられているが、駆動源であ
るエアを駆動部３６に供給するチューブ等がロードセル
３１の負荷側と基体３２との間に接続されているため、
エア圧力がかかったときロードセル３１の負荷に悪影響
を与える。However, in the device disclosed in Japanese Patent Laid-Open No. 3-123233, the drive unit 36 is used.
Since the operating direction of is the same as the load direction of the load cell 31,
When the discharge door 35 of the weighing hopper 34 is opened and closed, the load of the load cell 31 is changed. Further, the drive unit 36 is attached to the load side of the load cell 31, but a tube or the like for supplying air as a drive source to the drive unit 36 is connected between the load side of the load cell 31 and the base 32. ,
When the air pressure is applied, the load of the load cell 31 is adversely affected.
【０００６】また、特開平４−３６３６３０号に開示さ
れたものでは、エアシリンダ４１の動作方向がロードセ
ル３７の負荷方向と直交する方向なのでロードセル３７
の負荷に変動を与えることはないが、前述の従来例のい
ずれの場合も被計量物が計量状態におかれるときには、
計量ホッパ３４と駆動部３６が、あるいは筒状容器３９
と移動機構４３とが切り離されている必要がある。つま
り、計量状態では、ロードセル３１、３７の負荷側に取
り付けられている計量ホッパ３４あるいは筒状容器３９
と、基体３２、３８側に取り付けられている駆動部３６
や移動機構４３とが接触していてはロードセル３１、３
７に正確な負荷がかからず、誤った計量が行われる恐れ
がある。このために駆動部３６や移動機構４３は計量時
に計量ホッパ３４や筒状容器３９と切り離すことができ
るような構造を必要とし、複雑なものとなっている。本
発明は、上記課題を解決するためになされたものであ
り、測定精度の良い、簡単な構造の計量装置を提供する
ことを目的としている。Further, in the one disclosed in Japanese Patent Laid-Open No. 4-363630, since the operating direction of the air cylinder 41 is the direction orthogonal to the load direction of the load cell 37, the load cell 37
However, in any of the above-mentioned conventional examples, when the object to be weighed is in the weighing state,
The weighing hopper 34 and the drive unit 36, or the cylindrical container 39
And the moving mechanism 43 need to be separated. That is, in the weighing state, the weighing hopper 34 or the tubular container 39 attached to the load side of the load cells 31 and 37.
And a drive unit 36 attached to the bases 32, 38 side
And the moving mechanism 43 are in contact with each other, the load cells 31, 3
There is a risk that incorrect load will be performed because the load is not accurately applied to 7. For this reason, the driving unit 36 and the moving mechanism 43 require a structure that can be separated from the weighing hopper 34 and the cylindrical container 39 at the time of weighing, which is complicated. The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a weighing device with good measurement accuracy and a simple structure.
【０００７】[0007]
【発明が解決するための手段】上記目的を達成するため
に、本発明の計量装置は、基体にロ−ドセルの取付側が
取り付けられ、上部に被計量物を受け入れる受け口と下
部に被計量物を排出する排出口を有した筒状部材がロー
ドセルの負荷側に取り付けられている。さらに排出口を
開閉する開閉部材と、開閉部材を作動させるためのピス
トンを水平方向に駆動させるエアシリンダとが筒状部材
と同じようにロードセルの負荷側に取り付けられてい
る。基体側からエアシリンダにエアを供給するために、
可撓性を有するチュ−ブが全体的にほぼ水平方向に基体
側からエアシリンダに接続され、エアシリンダからの排
出エアを水平方向に指向させるための排出装置がロード
セルの負荷側に取り付けられている。In order to achieve the above object, the weighing device of the present invention has a load cell attached to a base body, a receiving port for receiving an object to be weighed at an upper portion and an object to be weighed at a lower portion. A tubular member having a discharge port for discharging is attached to the load side of the load cell. Further, an opening / closing member that opens / closes the discharge port and an air cylinder that horizontally drives a piston for operating the opening / closing member are attached to the load side of the load cell, like the tubular member. In order to supply air to the air cylinder from the base side,
A flexible tube is connected to the air cylinder in a generally horizontal direction from the base side, and an exhaust device for directing the exhaust air from the air cylinder in the horizontal direction is attached to the load side of the load cell. There is.
【０００８】[0008]
【作用】ロードセルの取付側は、基体に固定され、ロー
ドセルの負荷側には筒状部材、開閉部材、エアシリンダ
が取り付けられており、計量時に計量容器と駆動機構と
が被計量物と一括して計量されるため、不安定な接触部
分がなく安定した計量が行える。しかもエアシリンダの
動作方向およびエアの給排気の方向がロードセルの負荷
方向と異なるため、ロードセルの負荷に変動を与えな
い。また、エアを基体側からエアシリンダに供給するチ
ューブが可撓性を有しているため、チューブにエア圧が
かけられた状態でも基体とエアシリンダ間で剛性を持た
ず、したがってロードセルに負荷がかからない。The loading side of the load cell is fixed to the base body, and the loading side of the load cell is provided with the tubular member, the opening / closing member, and the air cylinder. Since there is no unstable contact part, stable weighing can be performed. Moreover, since the operation direction of the air cylinder and the air supply / exhaust direction are different from the load cell load direction, the load of the load cell is not changed. In addition, since the tube that supplies air from the base body side to the air cylinder is flexible, there is no rigidity between the base body and the air cylinder even when air pressure is applied to the tube, and therefore a load is applied to the load cell. It does not take.
【０００９】[0009]
【実施例】本発明の実施例を図面を参照して説明する。
図１は、本発明の実施例の正面図、図２はその平面図、
図４はその斜視図である。基体１の内側には、略コの字
状の取付板８が取り付けられている。取付板８の凸部８
ａには、ロードセル２の取付側２ａが固定される。この
取付板８の奥行き長さは、ロードセル２の負荷側２ｂが
基体１の前面よりわずかだけ飛び出すように設定され
る。このため基体１は円形状に切り抜かれており、ロー
ドセル２の負荷側２ｂが前面に突出している。An embodiment of the present invention will be described with reference to the drawings.
1 is a front view of an embodiment of the present invention, FIG. 2 is a plan view thereof,
FIG. 4 is a perspective view thereof. A substantially U-shaped mounting plate 8 is attached to the inside of the base 1. Convex portion 8 of mounting plate 8
The attachment side 2a of the load cell 2 is fixed to a. The depth of the mounting plate 8 is set so that the load side 2b of the load cell 2 projects slightly from the front surface of the base 1. For this reason, the base 1 is cut out in a circular shape, and the load side 2b of the load cell 2 projects to the front.
【００１０】この突出したロードセル２の負荷側２ｂに
は、基体１に切り抜かれた円形の直径よりもやや小さい
直径を有する円板状のパネル９が取り付けられている。
パネル９の前面には、略コの字状をした支持部材１０が
固定されている。支持部材１０の２辺の上端には、上向
きに開口された切欠１０ａが設けられている。さらにパ
ネル９の内側には、エアシリンダ５が取り付けられ、ピ
ストン１１がパネル９の前面で往復動する。つまり、ロ
ードセル２の取付側２ａが基体１に固定され、ロードセ
ル２の負荷側２ｂにパネル９を介して、負荷を受ける支
持部材１０とエアシリンダ５とが取り付けられている。A disk-shaped panel 9 having a diameter slightly smaller than the circular diameter cut out in the base 1 is attached to the load side 2b of the projecting load cell 2.
A substantially U-shaped support member 10 is fixed to the front surface of the panel 9. A notch 10 a opened upward is provided at the upper ends of the two sides of the support member 10. Further, the air cylinder 5 is attached inside the panel 9, and the piston 11 reciprocates on the front surface of the panel 9. That is, the mounting side 2a of the load cell 2 is fixed to the base body 1, and the supporting member 10 receiving a load and the air cylinder 5 are mounted to the load side 2b of the load cell 2 via the panel 9.
【００１１】基体１の円形の切り抜きの外周には、化粧
パネル１２が取付られ、化粧パネル１２とパネル９との
間にこの隙間を塞ぐようにゴムのジャバラ１３が設けら
れている。掛け具１４は、略コの字状をしており、相対
する２辺の間には丸棒１５が渡されている。掛け具１４
のコの字の１辺には、４角棒の固定ブロック１５が取り
付けられ、固定ブロック１５の上面には２個のガイドピ
ン１６が取り付けられ、掛け具１４と対する面には、両
端面近くにそれぞれ丸棒のガイドレール１７が片持ち状
態で固定されている。A decorative panel 12 is attached to the outer periphery of the circular cutout of the base 1, and a rubber bellows 13 is provided between the decorative panel 12 and the panel 9 so as to close this gap. The hanging tool 14 has a substantially U-shape, and a round bar 15 is provided between two opposing sides. Hanging 14
A square-shaped fixed block 15 is attached to one side of the U-shape, and two guide pins 16 are attached to the upper surface of the fixed block 15. A round bar guide rail 17 is fixed in a cantilever state.
【００１２】開閉部材４は、略四角形の平板状をなして
おり、２本のガイドレール１７の上に載置される。開閉
部材４の形状は、一方のガイドレール１７の上に載る側
は平板のままで、他方のガイドレール１７に載る側はガ
イドレール１７の形状に合わせて、下面に半円状の溝４
ａが形成されている。これによりガイドレール１７上を
褶動することができる。開閉部材４の半円状の溝４ａが
形成されている側の側面は、一部が延設されており、エ
アシリンダ５のピストン１１の先端に設けられたロック
ナット１８が係止できるように一部が切り欠かれた切欠
部４ｂが設けられ、ピストン１１と係合できるように開
閉部材４の下面に半円状の溝４ｃが形成されている。The opening / closing member 4 has a substantially rectangular flat plate shape, and is placed on the two guide rails 17. The opening / closing member 4 has a flat plate shape on the side on which one guide rail 17 is mounted, and has a semicircular groove 4 on the lower surface according to the shape of the guide rail 17 on the side on which the other guide rail 17 is mounted.
a is formed. As a result, it is possible to slide on the guide rail 17. A part of the side surface of the opening / closing member 4 on the side where the semicircular groove 4a is formed is extended so that the lock nut 18 provided at the tip of the piston 11 of the air cylinder 5 can be locked. A cutout portion 4b, which is partially cut away, is provided, and a semicircular groove 4c is formed on the lower surface of the opening / closing member 4 so that it can be engaged with the piston 11.
【００１３】筒状部材３は、略四角形で上側開口部が下
側開口部より広くなっており、下側開口部の外側の一辺
にフランジ１９が設けられ、これに２か所のガイド穴２
０があけられている。これを利用して、筒状部材３は、
固定ブロック１５に設けられたガイドピン１６にガイド
穴２０が嵌合するように固定ブロック１５上に載置され
る。それに伴い筒状部材３の底面は、開閉部材４の上面
に接する。The tubular member 3 is substantially quadrangular and has an upper opening wider than the lower opening, and a flange 19 is provided on one side outside the lower opening, and two guide holes 2 are provided in the flange 19.
0 is opened. Utilizing this, the tubular member 3 is
The guide hole 16 is mounted on the fixed block 15 so that the guide hole 20 is fitted into the guide pin 16 provided on the fixed block 15. Accordingly, the bottom surface of the tubular member 3 contacts the top surface of the opening / closing member 4.
【００１４】エアシリンダ５を駆動するためのエアの供
給排出については、まず、図示しないエア供給装置から
基体１までエア供給管２１で配管される。基体１に固定
されたエア供給管２１からエアシリンダ５に固定されて
いる電磁弁２２までは、可トウ性を有するチューブ６
（例えば樹脂製のスパイラルチューブが望ましい）が接
続され、途中、エアシリンダ５に固定されている固定板
２３によって固定、保持される。電磁弁２１からエアシ
リンダ５の供給口５ａ、エアシリンダ５の供給口５ｂか
ら電磁弁２１、さらに電磁弁２１から排気装置７まで
は、それぞれリジッド又は可撓性のあるハイプ２４で接
続される。排気装置７は、エアシリンダ５に取り付けら
れた固定板２３に、排気方向が水平方向を向いて固定さ
れている。Regarding supply and discharge of air for driving the air cylinder 5, first, an air supply pipe 21 is connected from an air supply device (not shown) to the substrate 1. From the air supply pipe 21 fixed to the base body 1 to the solenoid valve 22 fixed to the air cylinder 5, a tube 6 having a towability is provided.
(For example, a resin spiral tube is desirable) is connected, and is fixed and held by the fixing plate 23 fixed to the air cylinder 5 on the way. The solenoid valve 21 is connected to the supply port 5a of the air cylinder 5, the supply port 5b of the air cylinder 5 is connected to the solenoid valve 21, and the solenoid valve 21 to the exhaust device 7 are connected by rigid or flexible hypes 24, respectively. The exhaust device 7 is fixed to a fixed plate 23 attached to the air cylinder 5 such that the exhaust direction is horizontal.
【００１５】つぎに動作について説明する。まず、支持
部材１０の切欠に掛け具１４の丸棒１５が係合され、固
定ブロック１５からガイドレール１７が延伸した状態で
取り付けられる。つぎに開閉部材４が、開閉部材４の切
欠部４ｂがエアシリンダ５のピストン１１のロックナッ
ト１８と係合するように２本のガイドレール１７の上に
載せられる。さらに筒状部材３がガイド穴２０と固定ブ
ロック１５上のピン１６とが嵌合するように開閉部材４
および固定ブロック１５上に載置される。このとき、エ
アは、エア供給管２１から電磁弁２２に送り込まれ、こ
こでエアシリンダ５のパイプ５ａ側に供給されているた
め、エアシリンダ５のピストン１１は、引き込まれた状
態におかれる。つまり、筒状部材３は、下部開口面が開
閉部材４で塞がれ、被計量物Ｗが投下されて計量する状
態にある。ここで筒状部材３に被計量物Ｗが投入され、
被計量物Ｗは、開閉部材４の上面に堆積する。この状態
で筒状容器３と開閉部材４とで形成された計量容器と、
堆積された被計量物Ｗの荷重は、ガイドレール１７、固
定ブロック１５、掛け具１４、支持部材１０、パネル９
の荷重とともに、取付板８に取り付けられたロードセル
２により計量される。勿論、パネル９に取り付けられた
エアシリンダ５およびそれに付随する電磁弁２２、チュ
ーブ６の固定板２３の重量もロードセル２の負荷として
計量される。Next, the operation will be described. First, the round bar 15 of the hanging tool 14 is engaged with the notch of the support member 10, and the guide rail 17 is attached in a state of extending from the fixed block 15. Next, the opening / closing member 4 is placed on the two guide rails 17 so that the notch 4b of the opening / closing member 4 engages with the lock nut 18 of the piston 11 of the air cylinder 5. Further, the tubular member 3 is opened and closed so that the guide hole 20 and the pin 16 on the fixed block 15 fit together.
And mounted on the fixed block 15. At this time, the air is sent from the air supply pipe 21 to the solenoid valve 22 and is supplied to the pipe 5a side of the air cylinder 5 here, so that the piston 11 of the air cylinder 5 is kept in the retracted state. That is, the cylindrical member 3 is in a state where the lower opening surface is closed by the opening / closing member 4 and the object W to be weighed is dropped and weighed. Here, the object W to be weighed is put into the tubular member 3,
The objects W to be weighed are deposited on the upper surface of the opening / closing member 4. In this state, a measuring container formed by the cylindrical container 3 and the opening / closing member 4,
The load of the object to be weighed W accumulated is the guide rail 17, the fixed block 15, the hanging tool 14, the support member 10, and the panel 9.
Is measured by the load cell 2 attached to the attachment plate 8 together with the load. Of course, the weight of the air cylinder 5 attached to the panel 9, the solenoid valve 22 attached to it, and the fixing plate 23 of the tube 6 are also measured as the load of the load cell 2.
【００１６】エア供給管２１からは、絶えずエアが供給
されているため、基体１からロードセル２の負荷側に接
続されているチューブ６の内部には圧力がかかってい
る。しかし、チューブ６は可撓性を有するため、剛性を
持たず、この圧力の影響をロードセル２の負荷側に与え
ることがない。Since air is constantly supplied from the air supply pipe 21, pressure is applied to the inside of the tube 6 connected from the base 1 to the load side of the load cell 2. However, since the tube 6 has flexibility, it has no rigidity, and the influence of this pressure does not affect the load side of the load cell 2.
【００１７】被計量物Ｗの計量が終了したなら、被計量
物は筒状部材３から排出される。この場合は、電磁弁２
２を切り換えてエアシリンダ５の５ｂ側にエアを供給す
る。するとピストン１１が押し出されて、それに伴い図
１の矢印Ａのように開閉部材４がガイドレール１７上を
移動し、図３に示すように筒状部材３の下部開口面が開
いて被計量物Ｗが落下、排出される。このとき、エアシ
リンダ５の５ａ側から押し出されたエアは、パイプ２４
及び電磁弁２２を通って排気装置７から排気される。排
気装置は、固定板２３に水平方向を向いて取り付けられ
ているので、エアの噴出方向も水平方向である。したが
ってエアの噴出方向とロードセル２の負荷方向とは直交
するので、エアの噴出による影響は負荷には与えない。When the weighing of the object to be weighed W is completed, the object to be weighed is discharged from the tubular member 3. In this case, solenoid valve 2
2 is switched to supply air to the 5b side of the air cylinder 5. Then, the piston 11 is pushed out, the opening / closing member 4 moves on the guide rail 17 as shown by an arrow A in FIG. 1, and the lower opening surface of the tubular member 3 opens as shown in FIG. W drops and is discharged. At this time, the air pushed out from the 5a side of the air cylinder 5 is
And exhausted from the exhaust device 7 through the solenoid valve 22. Since the exhaust device is attached to the fixed plate 23 in a horizontal direction, the air ejection direction is also a horizontal direction. Therefore, since the air ejection direction and the load direction of the load cell 2 are orthogonal to each other, the air ejection does not affect the load.
【００１８】被計量物Ｗの排出が終了すると、電磁弁２
２が切り換えられ、エアシリンダ５の５ａ側からエアが
エアシリンダ５に供給される。ピストン１１がエアシリ
ンダ５内に引き込まれて、開閉部材４は、図３の矢印Ｂ
のように、筒状部材３の下部開口面を塞ぐような位置ま
で移動され、被計量物Ｗが投入される。このとき、エア
シリンダ５の５ｂ側から押し出されたエアは、パイプ２
４及び電磁弁２２を通って排気装置７から排気される。
以後、順次開閉部材４の移動によって、被計量物Ｗの投
入、計量、排出の動作を繰り返し、計量毎にロードセル
２のひずみセンサ２ｃから出力される電気信号を演算
し、被計量物Ｗの重量を算出する。When the discharge of the object W to be weighed is completed, the solenoid valve 2
2 is switched, and air is supplied to the air cylinder 5 from the 5a side of the air cylinder 5. When the piston 11 is drawn into the air cylinder 5, the opening / closing member 4 is closed by the arrow B in FIG.
As described above, the object W to be weighed is loaded by being moved to a position that closes the lower opening surface of the tubular member 3. At this time, the air pushed out from the 5b side of the air cylinder 5 is discharged from the pipe 2
The gas is exhausted from the exhaust device 7 through the solenoid valve 4 and the solenoid valve 22.
After that, by sequentially moving the opening / closing member 4, the operation of loading, weighing, and discharging the object to be weighed W is repeated, and an electric signal output from the strain sensor 2c of the load cell 2 is calculated for each weighing to calculate the weight of the object to be weighed W. To calculate.
【００１９】[0019]
【発明の効果】上記のように基体にロードセルの取付側
が固定され、ロードセルの負荷側に筒状部材、開閉部
材、エアシリンダが取り付けてあるため、計量時に不安
定な接触部分がなく安定した計量が行えるとともに、接
触しないようにするための特別の機構を必要としないた
め、構造が簡単である。しかもエアシリンダの動作方向
およびエアの排気装置の排気の方向がロードセルの負荷
方向と異なるため、ロードセルの負荷に変動を与えな
い。また、エアを基体側からエアシリンダに供給するチ
ューブが可撓性を有しているため、チューブにエア圧が
かかった状態でも基体とエアシリンダ間のチューブは剛
性を持たず、したがってロードセルの負荷に悪影響を与
えない。As described above, the mounting side of the load cell is fixed to the base body, and the cylindrical member, the opening / closing member, and the air cylinder are mounted on the load side of the load cell, so that there is no unstable contact portion during weighing and stable weighing is possible. The structure is simple because it does not require a special mechanism for preventing contact. Moreover, since the operating direction of the air cylinder and the exhaust direction of the air exhaust device are different from the load direction of the load cell, the load of the load cell is not changed. Also, since the tube that supplies air from the base body side to the air cylinder is flexible, the tube between the base body and the air cylinder does not have rigidity even when air pressure is applied to the tube, and therefore the load of the load cell is reduced. Does not adversely affect.
【図１】本発明の実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】本発明の実施例を示す平面図である。FIG. 2 is a plan view showing an embodiment of the present invention.
【図３】本発明の実施例の動作を示す正面図である。FIG. 3 is a front view showing the operation of the embodiment of the present invention.
【図４】本発明の実施例を示す斜視図である。FIG. 4 is a perspective view showing an embodiment of the present invention.
【図５】ロードセルの概要を示す概略図である。FIG. 5 is a schematic diagram showing an outline of a load cell.
【図６】従来技術を示す正面図である。FIG. 6 is a front view showing a conventional technique.
【図７】従来技術を示す正面図である。FIG. 7 is a front view showing a conventional technique.
１…基体、２…ロードセル、３…筒状部材、４…開閉部
材、５…エアシリンダ、６…チューブ、７…排気装置、
９…パネル、１０…支持部材、１１…ピストン、１４…
掛け具、１７…ガイドレール、２２…電磁弁DESCRIPTION OF SYMBOLS 1 ... Base | substrate, 2 ... Load cell, 3 ... Cylindrical member, 4 ... Opening / closing member, 5 ... Air cylinder, 6 ... Tube, 7 ... Exhaust device,
9 ... Panel, 10 ... Support member, 11 ... Piston, 14 ...
Hook, 17 ... Guide rail, 22 ... Solenoid valve
Claims (1)
られたロ−ドセル（２）と、該ロードセルの負荷側に取
り付けられていて上部に被計量物を受け入れる受け口と
下部に前記被計量物を排出する排出口を有した筒状部材
（３）と、前記ロードセルの負荷側に取り付けられてい
て前記排出口を開閉する開閉部材（４）と、前記ロード
セルの負荷側に取り付けられていて前記開閉部材を作動
させるためにピストンを水平方向に駆動させるエアシリ
ンダ（５）と、前記基体側から前記エアシリンダにエア
を供給するために全体的にほぼ水平方向に接続された可
撓性を有するチュ−ブ（６）と、前記ロードセルの負荷
側に取り付けられていて、前記エアシリンダからの排出
エアを水平方向に指向させるための排出装置（７）とを
含む計量装置。1. A base body (1), a load cell (2) having an attachment side attached to the base body, a receiving port which is attached to a load side of the load cell and which receives an object to be weighed on an upper part, and the receiving part on a lower part. A cylindrical member (3) having a discharge port for discharging a measured object, an opening / closing member (4) attached to the load side of the load cell for opening and closing the discharge port, and attached to the load side of the load cell. And an air cylinder (5) for driving a piston in a horizontal direction to operate the opening / closing member, and a flexible structure connected in a substantially horizontal direction to supply air from the base body side to the air cylinder. And a discharge device (7) attached to the load side of the load cell for directing discharge air from the air cylinder in a horizontal direction.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22601094A JP3321310B2 (en) | 1994-08-26 | 1994-08-26 | Weighing device |
| KR1019960702127A KR100195646B1 (en) | 1994-08-26 | 1995-08-23 | Combined metering apparatus |
| EP95929206A EP0727648B1 (en) | 1994-08-26 | 1995-08-23 | Combination weighing equipment |
| EP02006187A EP1217343A1 (en) | 1994-08-26 | 1995-08-23 | Combination weighing apparatus |
| CN95190821A CN1134749A (en) | 1994-08-26 | 1995-08-23 | Combination weighing equipment |
| US08/633,813 US5767453A (en) | 1994-08-26 | 1995-08-23 | Combined metering apparatus |
| DE69530472T DE69530472T2 (en) | 1994-08-26 | 1995-08-23 | COMBINATION SCALE |
| EP02006188A EP1217344A1 (en) | 1994-08-26 | 1995-08-23 | Combination weighing apparatus |
| PCT/JP1995/001663 WO1996007083A1 (en) | 1994-08-26 | 1995-08-23 | Combination weighing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22601094A JP3321310B2 (en) | 1994-08-26 | 1994-08-26 | Weighing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0868685A true JPH0868685A (en) | 1996-03-12 |
| JP3321310B2 JP3321310B2 (en) | 2002-09-03 |
Family
ID=16838379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22601094A Expired - Lifetime JP3321310B2 (en) | 1994-08-26 | 1994-08-26 | Weighing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3321310B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001349769A (en) * | 2000-06-08 | 2001-12-21 | Anritsu Corp | Measuring instrument |
| JP2009244130A (en) * | 2008-03-31 | 2009-10-22 | Yamato Scale Co Ltd | Weighing unit and combination balance |
-
1994
- 1994-08-26 JP JP22601094A patent/JP3321310B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001349769A (en) * | 2000-06-08 | 2001-12-21 | Anritsu Corp | Measuring instrument |
| JP4566340B2 (en) * | 2000-06-08 | 2010-10-20 | アンリツ産機システム株式会社 | Weighing device |
| JP2009244130A (en) * | 2008-03-31 | 2009-10-22 | Yamato Scale Co Ltd | Weighing unit and combination balance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3321310B2 (en) | 2002-09-03 |
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