JPH0650802A - Weighing device - Google Patents
Weighing deviceInfo
- Publication number
- JPH0650802A JPH0650802A JP20263892A JP20263892A JPH0650802A JP H0650802 A JPH0650802 A JP H0650802A JP 20263892 A JP20263892 A JP 20263892A JP 20263892 A JP20263892 A JP 20263892A JP H0650802 A JPH0650802 A JP H0650802A
- Authority
- JP
- Japan
- Prior art keywords
- sample
- weighing
- measured
- load
- reference sample
- 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
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- Sampling And Sample Adjustment (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
(57)【要約】
【目的】 簡単なハンドリング機構を用いることによっ
て、加工前後の試料の質量変化等を、誤差なく迅速に計
測することのできる計量装置を提供する。
【構成】 荷重感応部に連結された支持部材に対して、
上下方向に同心上に装着された２個の秤量皿を備えた構
造とする。また、これに加え、２個の秤量皿のうち、一
方に被測定試料が、他方には参照用試料が載り、かつ、
荷重感応部にはこれら両試料のいずれか一方が負荷され
た状態となるよう、カムの回動によって同期して上下逆
向きに駆動される試料載せ降ろし機構を設けてもよい。
(57) [Abstract] [Purpose] To provide a weighing device capable of quickly measuring a change in mass of a sample before and after processing without error by using a simple handling mechanism. [Structure] With respect to the support member connected to the load sensitive section,
The structure is provided with two weighing pans that are concentrically mounted in the vertical direction. In addition to this, one of the two weighing pans has a sample to be measured, the other has a reference sample, and
The load sensitive section may be provided with a sample loading / unloading mechanism that is driven upside down in synchronization with the rotation of the cam so that either one of these samples is loaded.
Description
【０００１】[0001]
【産業上の利用分野】本発明は物品の重量または質量を
測定するための計量装置に関し、特に、試料の加工前後
等における重量または質量変化を測定するのに適した計
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 or mass of an article, and more particularly to a weighing device suitable for measuring the weight or mass change of a sample before and after processing.
【０００２】[0002]
【従来の技術】電子天びんや電子はかり等の計量装置に
おいては、一般に、電磁力平衡機構やロードセル等の荷
重感応部に対して、皿受け軸や吊り芯等の支持部材を介
して１個の秤量皿が支承され、この秤量皿上に被計量物
を載せることによって、その質量ないしは重量が計測さ
れる。2. Description of the Related Art In a weighing device such as an electronic balance or an electronic balance, generally, a load-sensing portion such as an electromagnetic force balancing mechanism or a load cell is supported by a single member via a supporting member such as a dish receiving shaft or a suspension core. The weighing pan is supported, and the mass or weight is measured by placing the object to be weighed on the weighing pan.
【０００３】このような計量装置を用いて、例えば塗装
や蒸着等の加工前後の試料の質量ないしは重量変化を測
定する場合、従来、まず加工前の試料を秤量皿上に載せ
て計量を行った後、その試料に加工を施し、加工後の試
料を再び秤量皿上に載せて計量し、加工前後の計量値の
差を算出している。When measuring the mass or weight change of a sample before and after processing such as coating or vapor deposition using such a measuring device, conventionally, the sample before processing is first placed on a weighing dish and measured. After that, the sample is processed, and the processed sample is placed on the weighing dish again and weighed to calculate the difference between the measured values before and after the processing.
【０００４】ところで、電子天びんや電子はかりでは、
一般に経時的な感度変化があり、加工前後の計量の間に
感度が変化してしまった場合には、その測定結果に誤差
が含まれることになる。By the way, in electronic balances and electronic scales,
Generally, there is a change in sensitivity over time, and if the sensitivity changes during weighing before and after processing, the measurement result will include an error.
【０００５】この問題を避けるためには、従来、計量の
都度感度較正を行うか、あるいは、測定の都度、基準分
銅等の参照用試料と被計量物を計量し、その差の加工前
後における差（差の差）によって質量ないしは重量変化
を求める方法が考えられる。In order to avoid this problem, conventionally, sensitivity calibration is performed each time measurement is performed, or a reference sample such as a standard weight and an object to be measured are measured each time measurement is performed, and the difference between the difference before and after processing is measured. A method of determining the change in mass or weight by (difference in difference) can be considered.
【０００６】[0006]
【発明が解決しようとする課題】上記した従来の計量装
置を用いた対策によると、前者では作業が面倒であり、
また、感度較正を忘れてしまうことも考えられ、確実な
対策であるとは言いがたい。また、後者の対策では、ハ
ンドリング機構を用いるにしても１回の測定動作ごとに
参照用試料を秤量皿上に載せて計量した後にこれを降ろ
し、同じ皿上に被計量物を載せて計量した後にこれを降
ろす必要があって、秤量皿に対する載せ替え動作が煩雑
であり、測定に要する時間が長くなったり、あるいは荷
重感応部にショックが加わる可能性が増大するという問
題があった。According to the measures using the above-mentioned conventional weighing device, the former work is troublesome,
In addition, it is hard to say that this is a reliable measure because it is possible to forget the sensitivity calibration. Further, in the latter measure, even if the handling mechanism is used, the reference sample is placed on the weighing dish and weighed after each measurement operation, and then the sample is taken down and the object to be weighed is placed on the same dish and weighed. There is a problem in that it is necessary to unload it later, the operation of replacing the weighing pan is complicated, the time required for the measurement becomes long, and the possibility that a shock is applied to the load sensitive part increases.
【０００７】本発明はこのような実情に鑑みてなされた
もので、特に加工前後の試料の質量ないしは重量変化
を、簡単な機構のハンドリング装置を用いることによっ
て誤差なく正確に、しかも迅速に計測することのできる
計量装置の提供を目的としている。The present invention has been made in view of the above circumstances, and in particular, the mass or weight change of a sample before and after processing can be measured accurately and quickly without error by using a handling device having a simple mechanism. The purpose is to provide a weighing device that can do this.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の計量装置は、荷重感応部に連結された支持
部材に対して、上下方向に同心上に装着された２個の秤
量皿を備えていることによって特徴づけられる。In order to achieve the above object, the weighing device of the present invention comprises two weighing devices mounted vertically and concentrically with respect to a support member connected to a load sensitive portion. Characterized by having a dish.
【０００９】また、この構成に加え、上下２個の秤量皿
のうち、一方に被測定試料が、他方には参照用試料が載
り、かつ、荷重感応部には被測定試料および参照用試料
のいずれか一方が負荷された状態となるよう、カムの回
動により互いに同期して上下逆向きに駆動される試料載
せ降ろし機構を設けた構造とすることができる。In addition to this configuration, the sample to be measured is placed on one of the upper and lower weighing pans, the reference sample is placed on the other, and the sample to be measured and the reference sample are placed on the load sensitive section. It is possible to adopt a structure in which a sample loading / unloading mechanism that is driven upside down in synchronization with each other by the rotation of the cam is provided so that one of the two is loaded.
【００１０】[0010]
【作用】同じ荷重感応部に対して、秤量皿を上下に同心
上に２個設けることにより、被測定試料と参照用試料を
個別の秤量皿に載せて計量することができる。このこと
は、１個の秤量皿に被測定試料と参照用試料を交互に載
せ替える場合に比してその動作が簡略化される。By providing two weighing pans vertically and concentrically with respect to the same load-sensing section, the sample to be measured and the reference sample can be placed on individual weighing pans and weighed. This simplifies the operation as compared with the case where the sample to be measured and the reference sample are alternately placed on one weighing dish.
【００１１】また、この上下２個の秤量皿に対して、カ
ムによって互いに同期して上下逆向きに変位駆動される
載せ降ろし機構を設けて、一方の秤量皿に被測定試料、
他方の秤量皿に参照用試料が載り、かつ、荷重感応部に
は被測定試料もしくは参照用試料のいずれか一方が負荷
された状態となるようにすることで、測定時間が短縮化
されると同時に、１個の秤量皿にこれらを載せ替える機
構に比して動作が簡単であるともに、荷重感応部に対し
てショック等を与える恐れが少なくなる。Further, a loading / unloading mechanism is provided for the upper and lower two weighing pans, which are driven to be displaced upside down in synchronism with each other by a cam, and one of the weighing pans is provided with a sample to be measured.
If the reference sample is placed on the other weighing pan and the load-sensitive part is loaded with either the sample to be measured or the reference sample, the measurement time can be shortened. At the same time, the operation is simpler than that of a mechanism that replaces them on one weighing pan, and the risk of giving a shock or the like to the load sensitive section is reduced.
【００１２】[0012]
【実施例】図１は本発明実施例の正面図で、図２はその
Ａ−Ａ矢視図、図３は同じくＢ−Ｂ矢視図である。ま
た、図４は図３のＣ−Ｃ矢視図である。1 is a front view of an embodiment of the present invention, FIG. 2 is a view taken along the line A--A, and FIG. 3 is a view taken along the line B--B. Further, FIG. 4 is a view taken along the line CC of FIG.
【００１３】荷重感応部１は例えば公知の電磁力平衡型
の上皿天びん機構であって、静磁場回路中に置かれた可
動コイルを有する電磁力発生装置と、この電磁力発生装
置の可動コイルに一端が係合し、他端がロバーバル機構
の可動柱に係合するレバー、そのレバーの変位を検出し
て、その変位が零となるように電磁力発生装置の可動コ
イルに流すべき電流の大きさを決定するサーボ回路機構
等によって構成されている。The load sensing unit 1 is, for example, a well-known electromagnetic force balance type fine balance mechanism, and has an electromagnetic force generator having a movable coil placed in a static magnetic field circuit, and a movable coil of this electromagnetic force generator. A lever whose one end is engaged with and the other end is engaged with the movable column of the Roberval mechanism, the displacement of the lever is detected, and the current of the current to be passed through the movable coil of the electromagnetic force generator is detected so that the displacement becomes zero. It is composed of a servo circuit mechanism for determining the size.
【００１４】荷重感応部１の負荷中心、すなわち荷重感
応部１内のロバーバル機構の可動柱に設けられた皿受部
には、その負荷中心軸Ｌに沿って鉛直上方に伸びた後に
水平方向に屈曲して再び鉛直上方に伸びる皿支持軸２が
装着されている。この皿支持軸２には、その荷重感応部
１の負荷中心軸Ｌを中心とした上下２個の秤量皿３およ
び４が一体的に設けられている。各秤量皿３および４
は、図２に示すように、それぞれ負荷中心軸Ｌを中心と
する所定の円周上に３箇所以上の突起ｅを有し、その突
起ｅの各頂部において板状の試料を水平に支え得るよう
になっている。The center of the load of the load-sensitive section 1, that is, the plate receiving section provided on the movable column of the Roberval mechanism in the load-sensitive section 1 extends vertically upward along the load center axis L and then extends horizontally. A dish support shaft 2 that bends and extends vertically upward again is mounted. The dish support shaft 2 is integrally provided with two upper and lower weighing dishes 3 and 4 centered on the load center axis L of the load sensing unit 1. Each weighing dish 3 and 4
As shown in FIG. 2, each has three or more protrusions e on a predetermined circumference centered on the load center axis L, and a plate-shaped sample can be supported horizontally at each top of each protrusion e. It is like this.
【００１５】この各秤量皿３および４にそれぞれ近接し
て、試料載せ降ろし機構５が配設されている。この試料
載せ降ろし機構５は、以下に示すメカニズムによって、
上側の秤量皿３に対して被測定試料Ｗを、下側の秤量皿
４に対して参照用試料Ｓを、それぞれ個別に載せ降ろし
することができる。A sample loading / unloading mechanism 5 is arranged in proximity to each of the weighing pans 3 and 4. The sample loading / unloading mechanism 5 is constructed by the mechanism described below.
It is possible to individually load and unload the sample W to be measured on the upper weighing pan 3 and the reference sample S on the lower weighing pan 4.
【００１６】すなわち、基台５０には、モータ５１によ
って回転が与えられる水平方向の駆動軸５２が支承され
ており、この駆動軸５２には、所定の距離を隔てて２個
のカム５３ａおよび５３ｂが、ネジ（図示せず）によっ
て固着されている。基台５０には、２本のシャフト５４
ａおよび５４ｂがそれぞれ２個のスライドベアリングＳ
Ｂを介して鉛直方向に摺動自在に支承されており、この
各シャフト５４ａおよび５４ｂには、それぞれ持ち出し
板５５ａおよび５５ｂの一端部が溶接止めされている。That is, a horizontal drive shaft 52, which is rotated by a motor 51, is supported on the base 50, and two cams 53a and 53b are spaced apart from the drive shaft 52 by a predetermined distance. Are fixed by screws (not shown). The base 50 has two shafts 54
a and 54b each have two slide bearings S
It is slidably supported in the vertical direction via B, and one end of take-out plates 55a and 55b is welded to the shafts 54a and 54b, respectively.
【００１７】各持ち出し板５５ａおよび５５ｂは、それ
ぞれシャフト５４ａおよび５４ｂを含めた自重によりカ
ム５３ａおよび５３ｂの外周上面に当接しているととも
に、その当接部よりも他端側は水平面上でクランク状に
屈曲して秤量皿３あるいは４の直下に伸び、その先端部
にはそれぞれ試料支持部５６ａおよび５６ｂが形成され
ている。この試料支持部５６ａおよび５６ｂは、図２に
示すように、秤量皿３および４と同様に３箇所以上の突
起ｆを有し、その突起ｆの各頂部において板状の試料を
水平に支え得るようになっている。この試料支持部５６
ａおよび５６ｂの突起ｆは、秤量皿３および４の突起ｅ
よりもその配設ピッチ円が大で、かつ、その高さが高く
なっており、それぞれの上下動に際しても秤量皿３ない
し４に干渉しないように考慮されている。The carry-out plates 55a and 55b are in contact with the outer peripheral upper surfaces of the cams 53a and 53b by their own weight including the shafts 54a and 54b, respectively, and the other end side of the contact parts is crank-shaped on a horizontal plane. It bends and extends right below the weighing pan 3 or 4, and sample supports 56a and 56b are formed at the tips thereof. As shown in FIG. 2, the sample support portions 56a and 56b have projections f at three or more locations, like the weighing pans 3 and 4, and the plate-shaped sample can be horizontally supported at each top of the projections f. It is like this. This sample support 56
The protrusions f of a and 56b are the protrusions e of the weighing pans 3 and 4.
The arrangement pitch circle is larger and the height is higher than that of the arrangement, so that it is considered not to interfere with the weighing pans 3 to 4 when each of them is moved up and down.
【００１８】各持ち出し板５５ａおよび５５ｂは、カム
５３ａ，５３ｂへの当接位置と試料支持部５６ａ，５６
ｂの間で、それぞれに固着されたガイド板５７ａおよび
５７ｂを介して共通のガイド棒５８によって上下方向に
ガイドされており、従って各持ち出し板５５ａおよび５
５ｂは、このガイド棒５８とそれぞれの一端部に固着さ
れたシャフト５４ａおよび５４ｂによって、水平面上で
の回動変位が規制されるようになっている。また、この
各持ち出し板５５ａおよび５５ｂは、前記したように、
それぞれを固着しているシャフト５４ａおよび５４ｂの
両端部においてスライドベアリングＳＢを介して基台５
０に支承されているので、水平面に対して傾斜すること
なく、常に水平状態を保ち得るようになっている。The carry-out plates 55a and 55b are provided in contact positions with the cams 53a and 53b and the sample support portions 56a and 56b.
b is vertically guided by a common guide rod 58 via guide plates 57a and 57b fixed to the takeout plates 55a and 5b.
The guide rod 58 and the shafts 54a and 54b fixed to the respective one ends of the guide rod 58 regulate the rotational displacement of the guide rod 5b on the horizontal plane. Further, each of the take-out plates 55a and 55b is, as described above,
The base 5 is mounted on both ends of the shafts 54a and 54b which are fixed to each other via slide bearings SB.
Since it is supported at 0, it is possible to always maintain a horizontal state without inclining with respect to the horizontal plane.
【００１９】カム５３ａと５３ｂはそれぞれ偏心カムで
あって、これらは互いにその位相が１８０°ずれた状態
で駆動軸５２に固着されている。従って、駆動軸５２に
回転を与えることにより、各持ち出し板５５ａおよび５
５ｂは互いに上下逆向きに変位することになる。そし
て、上側のカム５３ａの上面が最高点に達している図１
の状態では上側の試料支持部５６ａの突起ｆの上端面が
上側の秤量皿３の突起ｅの上端面よりも上方に位置する
とともに、この状態では下側のカム５３ｂの上面は最下
点に達し、下側の試料支持部５６ｂの突起ｆの上端面が
下側の秤量皿４の突起ｅの上端面よりも下方に位置する
ように構成されている。この状態から駆動軸５２を１８
０°回動させると、図５に示すように、上側の試料支持
部５６ａの突起ｆの上端面は上側の秤量皿３の突起ｅの
上端面よりも下方に位置し、かつ、下側の試料支持部５
６ｂの突起ｆの上端面は下側の秤量皿４の突起ｅの上端
面よりも上方に位置するようになっている。The cams 53a and 53b are eccentric cams, and they are fixed to the drive shaft 52 with their phases shifted by 180 °. Therefore, by rotating the drive shaft 52, the take-out plates 55a and 55a
5b will be displaced upside down with respect to each other. Then, the upper surface of the upper cam 53a reaches the highest point in FIG.
In this state, the upper end surface of the protrusion f of the upper sample support portion 56a is located above the upper end surface of the protrusion e of the upper weighing dish 3, and in this state, the upper surface of the lower cam 53b is at the lowest point. It is configured such that the upper end surface of the projection f of the lower sample support portion 56b is located below the upper end surface of the projection e of the lower weighing dish 4. From this state, set the drive shaft 52 to 18
When rotated by 0 °, as shown in FIG. 5, the upper end surface of the protrusion f of the upper sample support portion 56a is located lower than the upper end surface of the protrusion e of the upper weighing pan 3, and Sample support 5
The upper end surface of the projection f of 6b is located above the upper end surface of the projection e of the lower weighing pan 4.
【００２０】以上の構成において、例えば上側の試料支
持部５６ａには被測定試料Ｗを、下側の試料支持部５６
ｂには参照用試料Ｓを載せる。これにより、図１に示す
状態では、被測定試料Ｗは試料支持部５６ａに支えられ
て秤量皿３には負荷されず、参照用試料Ｓは試料支持部
５６ｂから外れて秤量皿４に負荷された状態となる。こ
の状態から駆動軸５２を１８０°回動させた図５の状態
では、被測定試料Ｗは試料支持部５６ａから外れて秤量
皿３に負荷され、参照用試料Ｓは試料支持部５６ｂに支
えられて秤量皿４に負荷されない状態となる。In the above-mentioned structure, for example, the sample W to be measured is placed on the upper sample support 56a and the sample support 56 on the lower side.
The reference sample S is placed on b. As a result, in the state shown in FIG. 1, the sample W to be measured is supported by the sample support 56a and is not loaded on the weighing dish 3, and the reference sample S is removed from the sample support 56b and loaded on the weighing dish 4. It will be in a state of being. In the state of FIG. 5 in which the drive shaft 52 is rotated 180 ° from this state, the measured sample W is detached from the sample support portion 56a and loaded on the weighing dish 3, and the reference sample S is supported by the sample support portion 56b. And the weighing pan 4 is not loaded.
【００２１】図１と図５の中間状態、すなわち駆動軸が
図１の状態から９０°あるいは２７０°回転した状態
で、被測定試料Ｗと参照用試料Ｓのそれぞれの秤量皿３
ないし４に対する負荷がスムーズに入れ代わるように、
カム５３ａおよび５３ｂ相互の位相を、ネジＢを緩めて
調整する。これにより、荷重感応部１には、常に被測定
試料Ｗと参照用試料Ｓのいずれか一方が負荷された状
態、あるいはこれに近い状態となり、負荷の変動が少な
くショック等が加わる可能性が極めて少なくなる。In the intermediate state between FIG. 1 and FIG. 5, that is, in the state where the drive shaft is rotated by 90 ° or 270 ° from the state of FIG. 1, the weighing pans 3 of the sample W to be measured and the reference sample S are respectively.
So that the load on Nos. 4 through 4 can be replaced smoothly,
Loosen the screw B to adjust the mutual phase of the cams 53a and 53b. As a result, the load-sensitive section 1 is always loaded with one of the measured sample W and the reference sample S, or in a state close to this, and there is a small possibility that a load will fluctuate and a shock or the like will be applied. Less.
【００２２】なお、以上の実施例において、カム５３
ａ，５３ｂとガイド板５７ａ，５７ｂは、例えばＰＴＦ
Ｅをはじめとする樹脂等、摩擦や磨耗の少ない材質によ
って形成することが望ましい。In the above embodiment, the cam 53
a, 53b and the guide plates 57a, 57b are made of, for example, PTF.
It is desirable to use a material such as resin such as E that has less friction and wear.
【００２３】この実施例を用いて加工前後の被測定試料
Ｗの質量変化を測定する場合には、同一の参照用試料Ｓ
を用いて、その質量と加工前の被測定試料Ｗの質量の差
を求めておき、加工後の被測定試料Ｗについても参照用
試料Ｓとの質量差を求め、これらの差の差を被測定試料
の質量変化とすることにより、加工に長時間を要してそ
の間に荷重感応部１に多少の感度変化が生じていても、
感度較正を行うことなく、極めて簡単に質量変化を求め
ることができる。When the mass change of the sample W to be measured before and after processing is measured using this embodiment, the same reference sample S is used.
Is used to find the difference between the mass of the measured sample W before processing and the mass of the measured sample W after processing with respect to the reference sample S, and the difference between these differences is calculated. By changing the mass of the measurement sample, even if it takes a long time to process and the load-sensitive section 1 slightly changes in sensitivity during that time,
Mass changes can be determined very easily without sensitivity calibration.
【００２４】以上の本発明実施例をそのまま用いて、図
６に模式的に示すような秤量室６を設けることにより、
更に測定精度を向上させることができる。すなわち、秤
量室６を仕切り板７によって、上側の秤量皿３を含む室
６ａと下側の秤量皿４を含む室６ｂに分割し、各室６ａ
と６ｂの大きさおよび形状を同一としておく。図６にお
いて（Ａ）は被測定試料Ｗの測定状態、（Ｂ）は参照用
試料Ｓの測定状態を示す。上述した本発明実施例の試料
載せ降ろし機構５の構造および秤量室６の各室６ａおよ
び６ｂの条件より、図中ｄ1 ＝ｄ3 ，ｄ2 ＝ｄ4 である
から、被測定試料Ｗおよび参照用試料Ｓに計量表示値に
おいて数カウント程度の狂いを生じさせるような帯電が
あった場合でも、各試料と秤量室形成部材との間に働く
クーロン力Ｆ1 およびＦ2 は、（Ａ）および（Ｂ）の間
で幾何学的構造が殆ど代わっていないため、Ｆ1 ≒Ｆ2
であると言え、被測定試料Ｗと参照用試料Ｓの質量差に
は殆ど影響を与えない。このことは、試料温度が秤量室
内の空気温度と異なるために生じる対流に関しても同様
であって、従って、図６の構造では、静電気や対流によ
る測定誤差が極めて少なくなる。Using the above embodiment of the present invention as it is, by providing a weighing chamber 6 as schematically shown in FIG.
Further, the measurement accuracy can be improved. That is, the weighing chamber 6 is divided by the partition plate 7 into a chamber 6a containing the upper weighing dish 3 and a chamber 6b containing the lower weighing dish 4, and each chamber 6a
And 6b have the same size and shape. In FIG. 6, (A) shows the measurement state of the sample W to be measured, and (B) shows the measurement state of the reference sample S. From the structure of the sample loading / unloading mechanism 5 of the embodiment of the present invention and the conditions of the chambers 6a and 6b of the weighing chamber 6, since d 1 = d 3 and d 2 = d 4 in the figure, the measured sample W and Even when the reference sample S is charged so as to cause an error of about several counts in the measured display value, the Coulomb forces F 1 and F 2 acting between each sample and the weighing chamber forming member are (A) Since the geometrical structure is hardly changed between (B) and (B), F 1 ≈F 2
However, the difference in mass between the measured sample W and the reference sample S is hardly affected. This also applies to convection that occurs when the sample temperature is different from the air temperature inside the weighing chamber, and therefore the structure of FIG. 6 has extremely few measurement errors due to static electricity or convection.
【００２５】なお、図１〜図５に示した実施例では、各
カム５３ａおよび５３ｂを共通の駆動軸５２に固着した
例を示したが、本発明はこの構造に限定されることな
く、例えば図７に示すように、カム５３ａおよび５３ｂ
を別個の駆動軸５２ａおよび５２ｂに固着し、この両駆
動軸５２ａ，５２ｂをギア等を介して同時に駆動させる
か、あるいは個別のパルスモータ等によって電気的に同
期して回転させるようにしてもよい。In the embodiments shown in FIGS. 1 to 5, the respective cams 53a and 53b are fixed to the common drive shaft 52, but the present invention is not limited to this structure. As shown in FIG. 7, the cams 53a and 53b
May be fixed to separate drive shafts 52a and 52b, and both drive shafts 52a and 52b may be simultaneously driven via gears or the like, or may be electrically synchronized and rotated by individual pulse motors or the like. .
【００２６】また、各秤量皿３，４と試料支持部５６
ａ，５６ｂの構造については、図２に示したように各突
起ｅないしｆを円環状の部材に形成するほか、図８に例
示するように分岐した直線状の部材に形成する等、適宜
の構造を採用し得ることは勿論である。The weighing pans 3 and 4 and the sample support 56 are also provided.
Regarding the structure of a and 56b, in addition to forming each protrusion e to f on an annular member as shown in FIG. 2 and forming it on a branched linear member as illustrated in FIG. Of course, the structure can be adopted.
【００２７】更に、以上の各実施例では上皿型の計量装
置に本発明を適用したが、下皿型の装置にも本発明を適
用することができる。すなわち、図２に例示したような
秤量皿３および４の円環状の外周面を、図１に例示した
皿受軸２に代えて吊り枠に装着し、その吊り枠を荷重感
応部の負荷中心軸Ｌに沿った計量フックに懸吊すればよ
い。Furthermore, in each of the above embodiments, the present invention is applied to the upper plate type weighing device, but the present invention can also be applied to the lower plate type device. That is, the circular outer peripheral surfaces of the weighing pans 3 and 4 as illustrated in FIG. 2 are attached to a hanging frame instead of the plate receiving shaft 2 illustrated in FIG. 1, and the hanging frame is attached to the load center of the load sensing unit. It may be suspended on a measuring hook along the axis L.
【００２８】[0028]
【発明の効果】以上説明したように、本発明によれば、
１個の荷重感応部に連結された支持部材対して上下方向
に同心状に装着された２個の秤量皿を備えているので、
例えば加工前後の試料の質量変化を測定する場合等にお
いて、被測定試料と参照用試料を逐次測定するに当た
り、それぞれを個別の秤量皿に負荷することが可能とな
り、１個の秤量皿を備えた従来の装置に比して、試料の
載せ替えのための動作が簡略化される。As described above, according to the present invention,
Since there are two weighing pans vertically and concentrically attached to the supporting member connected to one load-sensing section,
For example, in the case of measuring the mass change of a sample before and after processing, it is possible to load each of the measured sample and the reference sample into individual weighing pans, and to provide one weighing pan. The operation for transferring the sample is simplified as compared with the conventional apparatus.
【００２９】また、このような計量装置に対して、上下
２個の秤量皿のうち、一方に被測定試料が、他方には参
照用試料が載り、かつ、荷重感応部には被測定試料およ
び参照用試料のいずれか一方が負荷された状態となるよ
う、カムの回動により互いに同期して上下逆向きに駆動
される試料載せ降ろし機構を設けることにより、測定動
作が極めて簡単となるとともに、被測定試料と参照用試
料の載せ替え時における荷重感応部へのショックを大幅
に軽減することが可能となり、加工前後の試料の質量変
化の測定作業等における作業能率および精度を大幅に向
上させることが可能となった。With respect to such a weighing device, the sample to be measured is placed on one of the upper and lower two weighing pans, the sample for reference is placed on the other, and the sample to be measured and the sample to be measured are placed on the load sensitive section. By providing a sample loading / unloading mechanism that is driven upside down in synchronization with each other by the rotation of the cam so that either one of the reference samples is loaded, the measurement operation becomes extremely simple and It is possible to significantly reduce the shock to the load sensitive part when the sample to be measured and the reference sample are replaced, and to greatly improve the work efficiency and accuracy in the measurement work of the mass change of the sample before and after processing. Became possible.
【図１】本発明実施例の部分切り欠き正面図FIG. 1 is a partially cutaway front view of an embodiment of the present invention.
【図２】図１のＡ−Ａ矢視図FIG. 2 is a view on arrow AA of FIG.
【図３】図１のＢ−Ｂ矢視図FIG. 3 is a view taken along the line BB of FIG.
【図４】図３のＣ−Ｃ矢視図FIG. 4 is a view on arrow C-C of FIG.
【図５】本発明実施例の他の状態を示す部分切り欠き正
面図FIG. 5 is a partially cutaway front view showing another state of the embodiment of the present invention.
【図６】本発明実施例の応用例の要部の模式的説明図FIG. 6 is a schematic explanatory diagram of a main part of an application example of the embodiment of the present invention.
【図７】本発明の他の実施例の部分切り欠き正面図FIG. 7 is a partially cutaway front view of another embodiment of the present invention.
【図８】本発明の更に他の実施例の秤量皿および試料支
持部の平面図FIG. 8 is a plan view of a weighing pan and a sample support according to still another embodiment of the present invention.
１ 荷重感応部 ２ 皿支持軸 ３，４ 秤量皿 ｅ 突起 ５ 試料載せ降ろし機構 ５０ 基台 ５１ モータ ５２ 駆動軸 ５３ａ，５３ｂ カム ５４ａ，５４ｂ シャフト ５５ａ，５５ｂ 持ち出し板 ５６ａ，５６ｂ 試料支持部 ｆ 突起 ５７ａ，５７ｂ ガイド板 ５８ ガイド棒 ６ 秤量室 ７ 仕切り板 Ｌ 負荷中心軸 Ｗ 被測定試料 Ｓ 参照用試料 1 Load Sensitive Section 2 Dish Support Shaft 3,4 Weighing Dish e Protrusion 5 Sample Loading / unloading Mechanism 50 Base 51 Motor 52 Drive Shaft 53a, 53b Cam 54a, 54b Shaft 55a, 55b Take-out Plate 56a, 56b Sample Support f Protrusion 57a , 57b Guide plate 58 Guide rod 6 Weighing chamber 7 Partition plate L Load center axis W Measured sample S Reference sample
Claims (2)
を負荷することにより、その重量または質量を測定する
装置において、上記荷重感応部に連結された支持部材に
対して上下方向に同心上に装着された２個の秤量皿を備
えていることを特徴とする計量装置。1. An apparatus for measuring the weight or mass of a sample to be measured by loading the load-sensitive section through a weighing pan, wherein the load-sensitive section is vertically concentric with a support member connected to the load-sensitive section. A weighing device comprising two weighing pans mounted on the top.
下方向に装着された上記２個の秤量皿のうち、一方に被
測定試料が、他方には参照用試料が載り、かつ、上記荷
重感応部には被測定試料および参照用試料のいずれか一
方が負荷された状態となるよう、カムの回動により互い
に同期して上下逆向きに駆動される試料載せ降ろし機構
を備えていることを特徴とする計量装置。2. The weighing device according to claim 1, wherein a sample to be measured is placed on one of the two weighing pans mounted in the vertical direction, and a reference sample is placed on the other, and the load is applied. The sensitive part shall be equipped with a sample loading / unloading mechanism that is driven upside down in synchronization with each other by the rotation of the cam so that either the measured sample or the reference sample is loaded. Characteristic measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4202638A JP2611608B2 (en) | 1992-07-29 | 1992-07-29 | Weighing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4202638A JP2611608B2 (en) | 1992-07-29 | 1992-07-29 | Weighing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0650802A true JPH0650802A (en) | 1994-02-25 |
| JP2611608B2 JP2611608B2 (en) | 1997-05-21 |
Family
ID=16460656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4202638A Expired - Fee Related JP2611608B2 (en) | 1992-07-29 | 1992-07-29 | Weighing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2611608B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017086198A (en) * | 2015-11-04 | 2017-05-25 | ニプロ株式会社 | Blood purifying device |
| JP2017148152A (en) * | 2016-02-23 | 2017-08-31 | ニプロ株式会社 | Blood purifier |
| JP2019194574A (en) * | 2018-04-17 | 2019-11-07 | メトラー−トレド ゲーエムベーハー | Electronic balance with cantilever weighing pan |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5779442A (en) * | 1980-11-05 | 1982-05-18 | Fuji Electric Co Ltd | Measuring method of oxygen concentration in gas |
| JPS58180423U (en) * | 1982-05-28 | 1983-12-02 | 大和製衡株式会社 | load cell scale |
-
1992
- 1992-07-29 JP JP4202638A patent/JP2611608B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5779442A (en) * | 1980-11-05 | 1982-05-18 | Fuji Electric Co Ltd | Measuring method of oxygen concentration in gas |
| JPS58180423U (en) * | 1982-05-28 | 1983-12-02 | 大和製衡株式会社 | load cell scale |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017086198A (en) * | 2015-11-04 | 2017-05-25 | ニプロ株式会社 | Blood purifying device |
| JP2017148152A (en) * | 2016-02-23 | 2017-08-31 | ニプロ株式会社 | Blood purifier |
| JP2019194574A (en) * | 2018-04-17 | 2019-11-07 | メトラー−トレド ゲーエムベーハー | Electronic balance with cantilever weighing pan |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2611608B2 (en) | 1997-05-21 |
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