JP2011256023A - Linear feeder and combined scale using the same - Google Patents

Linear feeder and combined scale using the same Download PDF

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JP2011256023A
JP2011256023A JP2010132796A JP2010132796A JP2011256023A JP 2011256023 A JP2011256023 A JP 2011256023A JP 2010132796 A JP2010132796 A JP 2010132796A JP 2010132796 A JP2010132796 A JP 2010132796A JP 2011256023 A JP2011256023 A JP 2011256023A
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vibration
feeder
leaf springs
linear feeder
electromagnet
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JP5590977B2 (en
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Takayuki Nagai
孝幸 長井
Akira Shimizu
亮 清水
Shigeki Ando
茂樹 安藤
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Yamato Scale Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a linear feeder which can realize a small-size device and which can improve stability of carrying operation of goods and a combined scale using the linear feeder.SOLUTION: The linear feeder has a lower vibration system which is supported through vibration-damping bodies 30 and 31 on a fixed face and which is based on a lower vibrator 21 having a weighting part 21a at a posterior part, an upper vibration system which is based on an upper vibrator 22 arranged above the lower vibrator 21 at an anterior part of the weighting part 21a and a trough 29, a posterior-side leaf spring 24 and anterior-side leaf springs 23a and 23b that are arranged at the anterior part of the weighting part 21a on the lower vibrator 21 so that the posterior-side leaf spring and the anterior-side leaf springs are separated from each other and face each other, and an oscillating means that has an electromagnet 25 arranged at an anterior-side of the weighting means 21a and that provides vibration between the lower vibration system and the upper vibration system, and the anterior-side leaf springs 23a and 23b are configured with a pair of leaf springs arranged to be separated from side to side, and the electromagnet 25 is placed within this pair of leaf springs.

Description

本発明は、直進フィーダ及びそれを用いた組合せ秤に関する。   The present invention relates to a linear feeder and a combination weigher using the same.

従来、物品を振動によって搬送する搬送装置として直進フィーダがある(例えば、特許文献1参照)。また、組合せ秤には、直進フィーダが複数用いられている。   2. Description of the Related Art Conventionally, there is a linear feeder as a conveying device that conveys an article by vibration (for example, see Patent Document 1). Further, a plurality of linear feeders are used in the combination weigher.

組合せ秤では、例えば、装置中央の上部に円錐形の分散フィーダが配設され、分散フィーダの周辺に複数の直進フィーダが放射状に設置され、各々の直進フィーダの下方には供給ホッパ、さらにその下方に計量ホッパがそれぞれ円状に配設され、計量ホッパの下方に集合シュートが配設されている。例えば、外部の供給装置から分散フィーダの中央部に物品が供給され、分散フィーダから各直進フィーダへ物品が送り出され、各々の直進フィーダによって搬送された物品は直進フィーダの先端部から供給ホッパへ供給される。   In the combination weigher, for example, a conical dispersion feeder is arranged at the upper part of the center of the apparatus, and a plurality of linear feeders are installed radially around the dispersion feeder. The weighing hoppers are each arranged in a circular shape, and a collecting chute is arranged below the weighing hopper. For example, articles are supplied from an external supply device to the center of the dispersion feeder, articles are sent from the dispersion feeder to each linear feeder, and articles conveyed by each linear feeder are supplied to the supply hopper from the tip of each linear feeder. Is done.

このような組合せ秤に用いられる直進フィーダの従来構成の一例を図4に示す。図4(a)は、従来の直進フィーダを側方から見た概略構成を示す模式図であり、図4(b)は、同直進フィーダを前方から見た概略構成を示す模式図である。   An example of a conventional configuration of a linear feeder used in such a combination weigher is shown in FIG. FIG. 4A is a schematic diagram illustrating a schematic configuration of a conventional linear feeder as viewed from the side, and FIG. 4B is a schematic diagram illustrating a schematic configuration of the linear feeder as viewed from the front.

この従来の直進フィーダは、下部振動体21と、下部振動体21に板ばね23、24を介して連結された上部振動体22と、上部振動体22の上部に取付支持部28を介して固定されたトラフ29と、下部振動体21と上部振動体22との間に振動を与えるための電磁石25および被吸着部材26とを備え、下部振動体21が床面に対してばね等の防振体30、31で支持されている。   This conventional linear feeder is fixed to a lower vibrating body 21, an upper vibrating body 22 connected to the lower vibrating body 21 via leaf springs 23 and 24, and an upper portion of the upper vibrating body 22 via an attachment support portion 28. A trough 29, an electromagnet 25 for applying vibration between the lower vibrating body 21 and the upper vibrating body 22 and an attracted member 26, and the lower vibrating body 21 is vibration-proof such as a spring against the floor surface. It is supported by the bodies 30 and 31.

このような直進フィーダは、防振体30、31によって支持された防振体30、31より上の部分が振動体として振動する一方、電磁石25および被吸着部材26により与えられる振動を板ばね23、24によって増幅して上下に伝える構造であるので、下部振動体21を主体とする下部振動系と、上部振動体22およびトラフ29を主体とする上部振動系とからなる2自由度の振動系で構成されている。   In such a linear feeder, the portion above the vibration isolator 30, 31 supported by the vibration isolator 30, 31 vibrates as a vibrating body, while the vibration provided by the electromagnet 25 and the attracted member 26 is subjected to the leaf spring 23. , 24 and is transmitted in the vertical direction, a two-degree-of-freedom vibration system including a lower vibration system mainly including the lower vibration body 21 and an upper vibration system mainly including the upper vibration body 22 and the trough 29. It consists of

したがって、下部振動系と上部振動系の重心バランスは、下部振動系の重心位置G1と上部振動系の重心位置G2とを結ぶ直線L1が板ばね24と直交するようにすれば理想的な重心バランスとなり好ましい。このように重心バランスの設定がなされていないと、振動の往復加速度により偶力が発生し、振動系全体(防振体30、31より上部分)の重心を中心として回転運動(ピッチング)が発生し、安定した搬送動作の妨げになる。また、上部振動系に対する下部振動系の質量比を大きくすることにより、下部振動系の振動の振幅を小さくし、安定した搬送動作がなされる。   Therefore, the balance of the center of gravity between the lower vibration system and the upper vibration system is ideal if the straight line L1 connecting the gravity center position G1 of the lower vibration system and the gravity center position G2 of the upper vibration system is orthogonal to the leaf spring 24. It is preferable. If the balance of the center of gravity is not set in this way, a couple will be generated due to the reciprocating acceleration of the vibration, and a rotational motion (pitching) will occur around the center of gravity of the entire vibration system (above the vibration isolator 30, 31). In addition, the stable transfer operation is hindered. Further, by increasing the mass ratio of the lower vibration system to the upper vibration system, the vibration amplitude of the lower vibration system is reduced, and a stable transfer operation is performed.

実開昭58−71014号公報Japanese Utility Model Publication No. 58-71014

直進フィーダでは、前述のように下部振動系と上部振動系の重心バランスを理想的な重心バランスに設定し、上部振動系に対する下部振動系の質量比を大きくするためには、下部振動体21に上方へ突出したウエート部21aを設け、さらにウエート部21aに後方(上流側)へ大きく張り出したバランス調整部21bを設けなければならない。   In the linear feeder, as described above, the center of gravity balance between the lower vibration system and the upper vibration system is set to an ideal center of gravity balance, and the mass ratio of the lower vibration system to the upper vibration system is increased. It is necessary to provide a weight portion 21a that protrudes upward, and further to provide a balance adjustment portion 21b that largely protrudes rearward (upstream) to the weight portion 21a.

しかしながら、近年、組合せ秤では、その小型化が図られることにより、直進フィーダもその小型化が要求されている。直進フィーダは、分散フィーダの周囲に放射状に複数配置されているため、下部振動体21をバランス調整部21bのように上流側に大きく張り出すと分散フィーダの本体と干渉してしまい、上流側に大きく張り出したバランス調整部21bを設けることは困難である。そのため、重心バランスの崩れ等により生じる搬送ムラをある程度許容したセッティングを行なわなければならなかった。   However, in recent years, with the combination weigher being downsized, the linear feeder is also required to be downsized. Since a plurality of linear feeders are arranged radially around the dispersion feeder, if the lower vibrating body 21 protrudes largely upstream like the balance adjusting portion 21b, it interferes with the main body of the dispersion feeder, and on the upstream side. It is difficult to provide the balance adjustment portion 21b that protrudes greatly. For this reason, it has been necessary to perform a setting that allows a certain amount of conveyance unevenness caused by a loss of balance of the center of gravity.

本発明は上記のような課題を解決するためになされたもので、小型化を図ることができるとともに物品の搬送動作の安定性を向上することができる直進フィーダ及びそれを用いた組合せ秤を提供することを目的としている。   The present invention has been made to solve the above-described problems, and provides a linear feeder and a combination weigher using the linear feeder that can be downsized and can improve the stability of an article conveying operation. The purpose is to do.

上記目的を達成するために、本発明の直進フィーダは、後方側部分に供給される物品を振動によって前方側へ搬送し前方側の先端から排出するためのトラフを有する直進フィーダであって、固定面上に防振体を介して支持され、後方部分に上方へ突設したウエート部を有する下部振動体を主体とする下部振動系と、前記下部振動体の前記ウエート部より前方部分の上方に配置される上部振動体と、前記上部振動体の上部に取付けられた前記トラフとを主体とする上部振動系と、前記下部振動体の前記ウエート部より前方において後方側と前方側とに離間して対向配置され、前記上部振動体と前記下部振動体の前記前方部分とを連結する後方側の板ばね及び前方側の板ばねと、前記ウエート部より前方側に配置される電磁石を有し、前記下部振動系と前記上部振動系との間に振動を与える加振手段とを備え、前記前方側の板ばね及び前記後方側の板ばねのうちの一方が、左右に離間して配置された一対の板ばねからなり、この一対の板ばねの間に前記電磁石が配設されている。   In order to achieve the above object, the linear feeder of the present invention is a linear feeder having a trough for conveying articles supplied to the rear side portion to the front side by vibration and discharging them from the front end. A lower vibration system mainly composed of a lower vibration body having a weight portion supported by a vibration isolator on the surface and projecting upward at a rear portion; and above the front portion of the lower vibration body from the weight portion. An upper vibration system mainly composed of an upper vibration body to be disposed; and the trough attached to an upper portion of the upper vibration body; and a rear side and a front side of the lower vibration body in front of the weight portion. A rear leaf spring and a front leaf spring that connect the upper vibrator and the front portion of the lower vibrator, and an electromagnet arranged on the front side of the weight part, The lower vibration A pair of plates provided with vibration means for applying vibration between a system and the upper vibration system, wherein one of the front-side leaf spring and the rear-side leaf spring is spaced apart from the left and right It consists of a spring, and the electromagnet is disposed between the pair of leaf springs.

この構成によれば、例えば下部振動体の占有領域が一定の限られた領域であっても、前方側の板ばねが左右に離間して配置された一対の板ばねからなり、この一対の板ばねの間に電磁石を配設する場合には、電磁石及び後方側の板ばねを前寄りに配置し、ウエート部を前方へ延設してウエート部の質量を大きくし、下部振動体の質量を大きくすることができる。また、後方側の板ばねが左右に離間して配置された一対の板ばねからなり、この一対の板ばねの間に電磁石を配設する場合には、後方側の板ばねを前寄りに配置し、ウエート部を前方へ延設してウエート部の質量を大きくし、下部振動体の質量を大きくすることができる。このようにいずれの場合も下部振動体の質量を大きくすることができる。すなわち、上部振動系に対する下部振動系の質量比を大きくすることができるので、下部振動系の振動の振幅を小さくし、搬送動作の安定性を向上することができる。また、従来例のように、ウエート部の後方に大きく張り出したバランス調整部を設けた場合よりも、前後方向の長さを短縮することができ、直進フィーダの小型化を図ることが可能である。   According to this configuration, for example, even if the area occupied by the lower vibrating body is a certain limited area, the front side leaf springs are composed of a pair of leaf springs that are spaced apart from each other left and right. When an electromagnet is disposed between the springs, the electromagnet and the leaf spring on the rear side are arranged forward, the weight is extended forward to increase the weight of the weight, and the mass of the lower vibrator is increased. Can be bigger. In addition, the rear leaf spring is composed of a pair of leaf springs spaced apart from each other on the left and right, and when the electromagnet is disposed between the pair of leaf springs, the rear leaf spring is disposed forward. Then, the weight part can be extended forward to increase the weight of the weight part, and the mass of the lower vibrating body can be increased. Thus, in any case, the mass of the lower vibrating body can be increased. That is, since the mass ratio of the lower vibration system to the upper vibration system can be increased, the amplitude of vibration of the lower vibration system can be reduced and the stability of the transport operation can be improved. Further, as in the conventional example, it is possible to reduce the length in the front-rear direction and to reduce the size of the linear feeder as compared with the case where the balance adjustment part that protrudes greatly behind the weight part is provided. .

また、前記下部振動体は、その左右方向の幅が前方側より後方側の方が狭くなっており、前記前方側の板ばねが左右に離間して配置された一対の板ばねからなり、この一対の板ばねの間に前記電磁石が配設されていてもよい。   Further, the lower vibrating body has a width in the left-right direction that is narrower on the rear side than on the front side, and the front-side leaf spring is composed of a pair of leaf springs spaced apart on the left and right. The electromagnet may be disposed between a pair of leaf springs.

直進フィーダが放射状に複数配置される組合せ秤に用いられる場合には、下部振動体の左右方向の幅が、前方側より後方側の方が狭くなっているため、前方側の板ばねを左右に離間して配置された一対の板ばねとし、この一対の板ばねの間に電磁石を配設するようにした方が、後方側の板ばねを左右に離間して配置された一対の板ばねとし、この一対の板ばねの間に電磁石を配設するより、左右に離間した一対の板ばねの配置が容易になる。   When used in a combination weigher in which a plurality of linear feeders are arranged radially, the width of the lower vibrator in the left-right direction is narrower on the rear side than on the front side. A pair of leaf springs spaced apart and an electromagnet disposed between the pair of leaf springs constitutes a pair of leaf springs spaced apart on the left and right. Since the electromagnet is disposed between the pair of leaf springs, it is easier to dispose the pair of leaf springs separated from each other on the left and right.

また、本発明の組合せ秤は、外部から供給される物品を中央部から周縁部に向かう方向へ送り出す円錐形状の分散フィーダと、前記分散フィーダの周囲に放射状に複数設けられ、円状に配設された複数のホッパのそれぞれへ物品を搬送する直進フィーダとを有する組合せ秤であって、前記直進フィーダが上記本発明の直進フィーダからなる。   Further, the combination weigher of the present invention includes a conical dispersion feeder that feeds articles supplied from the outside in the direction from the center toward the peripheral edge, and a plurality of radials are provided around the dispersion feeder, and arranged in a circle. And a linear feeder that conveys articles to each of the plurality of hoppers, wherein the linear feeder comprises the linear feeder of the present invention.

この構成によれば、直進フィーダの小型化を図ることができるとともに物品の搬送動作の安定性を向上することができるので、組合せ精度の高い組合せ秤の小型化が容易になる。   According to this configuration, the linear feeder can be miniaturized and the stability of the article conveying operation can be improved, so that the combination weigher with high combination accuracy can be easily miniaturized.

本発明は、以上に説明した構成を有し、小型化を図ることができるとともに物品の搬送動作の安定性を向上することができる直進フィーダ及びそれを用いた組合せ秤を提供することができるという効果を奏する。   The present invention has the configuration described above, and can provide a linear feeder and a combination weigher using the linear feeder that can be reduced in size and can improve the stability of an article conveying operation. There is an effect.

(a)は、本発明の実施形態の直進フィーダを用いた組合せ秤の一例を側方から見た概略構成を示す模式図であり、(b)は、同組合せ秤の分散フィーダ及び直進フィーダを上方から見た概略構成を示す模式図である。(A) is a schematic diagram which shows schematic structure which looked at an example of the combination weigher using the rectilinear feeder of embodiment of this invention from the side, (b) is the dispersion | distribution feeder and rectilinear feeder of the same weigher. It is a schematic diagram which shows schematic structure seen from upper direction. (a)は、本発明の実施形態の直進フィーダを側方から見た概略構成を示す模式図であり、(b)は、同直進フィーダを前方から見た概略構成を示す模式図である。(A) is a schematic diagram which shows schematic structure which looked at the linear feeder of embodiment of this invention from the side, (b) is a schematic diagram which shows schematic structure which looked at the linear feeder from the front. (a)は、図2に示す本発明の実施形態の直進フィーダの水平断面を示す概略模式図であり、(b)は、本発明の実施形態の変形例の直進フィーダの水平断面を示す概略模式図であり、(c)は、バランス調整部を設けていない従来の直進フィーダの水平断面を示す概略模式図である。(A) is a schematic diagram which shows the horizontal cross section of the rectilinear feeder of embodiment of this invention shown in FIG. 2, (b) is the outline which shows the horizontal cross section of the rectilinear feeder of the modification of embodiment of this invention. It is a schematic diagram and (c) is a schematic diagram which shows the horizontal cross section of the conventional linear feeder which does not provide the balance adjustment part. (a)は、従来の直進フィーダを側方から見た概略構成を示す模式図であり、(b)は、同直進フィーダを前方から見た概略構成を示す模式図である。(A) is a schematic diagram which shows schematic structure which looked at the conventional linear feeder from the side, (b) is a schematic diagram which shows schematic structure which looked at the linear feeder from the front.

以下、本発明の好ましい実施の形態を、図面を参照しながら説明する。なお、以下では全ての図面を通じて同一又は相当する要素には同一の参照符号を付して、その重複する説明を省略する。また、本発明は、以下の実施形態に限定されない。   Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference symbols throughout all the drawings, and redundant description thereof is omitted. Further, the present invention is not limited to the following embodiment.

(実施形態)
図1(a)は、本発明の実施形態の直進フィーダを用いた組合せ秤の一例を側方から見た概略構成を示す模式図であり、図1(b)は、同組合せ秤の分散フィーダ及び直進フィーダを上方から見た概略構成を示す模式図である。
(Embodiment)
Fig.1 (a) is a schematic diagram which shows schematic structure which looked at an example of the combination weigher using the linear feeder of embodiment of this invention from the side, FIG.1 (b) is the dispersion | distribution feeder of the same combination weigher It is a schematic diagram which shows schematic structure which looked at the linear feeder from upper direction.

この組合せ秤は、装置中央に配設されたセンター基体(ボディ)10の上部に、円錐形状の分散フィーダ11が設けられている。この分散フィーダ11は、物品が載せられる円錐形の分散テーブルを有し、この分散テーブルの中央部に外部の供給装置(図示せず)から供給される物品を振動によってその周縁部方向へ送り出す。分散フィーダ11の周囲には、分散フィーダ11から送られてきた物品を振動によって各供給ホッパ13に送りこむための複数の直進フィーダ12が放射状に設けられている。各直進フィーダ12の下方には、供給ホッパ13及び計量ホッパ14がそれぞれ対応して設けられ、それぞれ円状に配設されている。供給ホッパ13は直進フィーダ12から送りこまれた物品を受け取り、その下方に配置された計量ホッパ14が空になると排出ゲートを開いて計量ホッパ14へ物品を投入する。各計量ホッパ14にはロードセル等の重量センサ15が取り付けられており、この重量センサ15により計量ホッパ14内の物品の重量が計測される。各重量センサ15の計測値は制御装置18へ出力される。円状に列設された計量ホッパ14の下方には、略逆円錐台形状の集合シュート16が配設され、集合シュート16の下方には集合ファネル17が設けられている。制御装置18によって後述の排出組合せに選択された計量ホッパ14はその排出ゲートを開いて物品を排出し、その排出された物品は集合シュート16上を滑り落ち、集合ファネル17を介して包装機等へ排出される。   In this combination weigher, a conical dispersion feeder 11 is provided on an upper portion of a center base body (body) 10 disposed in the center of the apparatus. The dispersion feeder 11 has a conical dispersion table on which articles are placed, and feeds articles supplied from an external supply device (not shown) to the center of the dispersion table in the direction of the peripheral edge thereof by vibration. Around the dispersion feeder 11, a plurality of rectilinear feeders 12 are provided in a radial pattern for sending articles sent from the dispersion feeder 11 to the supply hoppers 13 by vibration. Under each linear feeder 12, a supply hopper 13 and a weighing hopper 14 are provided correspondingly and arranged in a circular shape. The supply hopper 13 receives the articles sent from the linear feeder 12 and opens the discharge gate when the weighing hopper 14 disposed below the empty hopper 14 becomes empty, and puts the articles into the weighing hopper 14. Each weighing hopper 14 is provided with a weight sensor 15 such as a load cell, and the weight sensor 15 measures the weight of the article in the weighing hopper 14. The measurement value of each weight sensor 15 is output to the control device 18. A collecting chute 16 having a substantially inverted truncated cone shape is disposed below the weighing hoppers 14 arranged in a circle, and a collecting funnel 17 is provided below the collecting chute 16. The weighing hopper 14 selected as a later-described discharge combination by the control device 18 opens its discharge gate and discharges the article, and the discharged article slides down on the collecting chute 16 and wraps through a collecting funnel 17 or the like. Is discharged.

制御装置18は、例えばマイクロコンピュータによって構成され、CPU等からなる演算制御部と、RAM及びROM等のメモリ等とを備えている。メモリには、予め運転用プログラムが記憶されており、さらに多数の運転条件の設定データ、その他計量値データ等が記憶される。制御装置18は、演算制御部(CPU)がメモリに記憶されている運転用プログラムを実行することにより、組合せ秤の全体の動作の制御を行うとともに組合せ処理等を行う。   The control device 18 is configured by, for example, a microcomputer, and includes an arithmetic control unit including a CPU and the like, and a memory such as a RAM and a ROM. In the memory, an operation program is stored in advance, and a number of operation condition setting data, other measurement value data, and the like are stored. The control device 18 controls the overall operation of the combination weigher and performs combination processing and the like by the operation control unit (CPU) executing an operation program stored in the memory.

すなわち、制御装置18は、分散フィーダ11及び各直進フィーダ12の制御、供給ホッパ13及び計量ホッパ14の排出ゲートの開閉制御を行う。また、組合せ処理では、それぞれの重量センサ15により計測される物品の重量値に基づいて組合せ演算を行い、複数の計量ホッパ14の中から、供給されている物品の重量値の合計が、予め定められた所定重量範囲(目標組合せ重量に対する許容範囲)内になる計量ホッパ14の組合せを1つ求め、その組合せを排出組合せとする。なお、制御装置18は、必ずしも単独の制御装置で構成される必要はなく、複数の制御装置が分散配置されていて、それらが協働して組合せ秤の動作を制御するよう構成されていてもよい。   That is, the control device 18 controls the dispersion feeder 11 and each linear feeder 12, and controls the opening and closing of the discharge gates of the supply hopper 13 and the weighing hopper 14. Further, in the combination process, a combination calculation is performed based on the weight values of the articles measured by the respective weight sensors 15, and the total of the weight values of the articles supplied from the plurality of weighing hoppers 14 is determined in advance. One combination of the weighing hoppers 14 that falls within the predetermined weight range (allowable range with respect to the target combination weight) is obtained, and that combination is set as a discharge combination. Note that the control device 18 does not necessarily need to be configured as a single control device, and a plurality of control devices may be arranged in a distributed manner so that they cooperate to control the operation of the combination weigher. Good.

図2(a)は、本発明の実施形態の直進フィーダ12を側方から見た概略構成を示す模式図であり、図2(b)は、同直進フィーダ12を前方から見た概略構成を示す模式図である。   FIG. 2A is a schematic diagram illustrating a schematic configuration of the linear feeder 12 according to the embodiment of the present invention viewed from the side, and FIG. 2B illustrates a schematic configuration of the linear feeder 12 viewed from the front. It is a schematic diagram shown.

この直進フィーダ12は、下部振動体21と、下部振動体21に前方側の板ばね23a、23b及び後方側の板ばね24を介して連結された上部振動体22と、上部振動体22の上部に取付支持部28を介して固定されたトラフ29と、下部振動体21に固定された電磁石25と、電磁石25と所定間隔を有して対向するように上部振動体22に固定された被吸着部材(アーマチュア)26とを備えている。前方側の板ばね23a、23bと後方側の板ばね24とは、ほぼ平行に配置され、それぞれの上端部側が後方側に傾斜するように下部振動体21と上部振動体22との間に取り付けられている。電磁石25及び被吸着部材26が下部振動体21と上部振動体22との間に振動を与える加振手段を構成している。下部振動体21は、前方側の左右2つの防振体30と後方側の1つの防振体31とを介して組合せ秤のセンター基体10上に支持されている。防振体30、31はばねあるいはゴム等の弾性部材からなる。   The linear feeder 12 includes a lower vibrating body 21, an upper vibrating body 22 connected to the lower vibrating body 21 via front leaf springs 23 a and 23 b and a rear leaf spring 24, and an upper portion of the upper vibrating body 22. A trough 29 fixed to the upper vibration support member 28, an electromagnet 25 fixed to the lower vibration member 21, and a suction target fixed to the upper vibration member 22 so as to face the electromagnet 25 with a predetermined interval. And a member (armature) 26. The leaf springs 23a and 23b on the front side and the leaf spring 24 on the rear side are arranged substantially in parallel, and are attached between the lower vibrator 21 and the upper vibrator 22 so that the respective upper end sides are inclined rearward. It has been. The electromagnet 25 and the attracted member 26 constitute a vibrating means that applies vibration between the lower vibrating body 21 and the upper vibrating body 22. The lower vibration body 21 is supported on the center base body 10 of the combination weigher via two left and right vibration isolation bodies 30 on the front side and one vibration isolation body 31 on the rear side. The anti-vibration bodies 30 and 31 are made of an elastic member such as a spring or rubber.

この直進フィーダ12の振動機構について説明する。なお、以降の説明において、電磁石に電圧を印加することは、電磁石のコイルに電圧を印加することである。   The vibration mechanism of the linear feeder 12 will be described. In the following description, applying a voltage to the electromagnet means applying a voltage to the coil of the electromagnet.

電磁石25に例えば矩形波電圧を繰り返し印加することによりトラフ29を振動させて物品を搬送する。ここで、電磁石25に電圧を印加すると、電磁石25が上部振動体22に固定された被吸着部材26を吸引する。このとき、上部振動体22は、板ばね23a、23b、24が弾性変形することによって、電磁石25側、すなわち後方斜め下方向へ移動する。次に、電磁石25への電圧の印加を停止させると、電磁石25に生じる吸引力が解除され、板ばね23a、23b、24の弾性反発力によって上部振動体22が前方斜め上方向に移動する。トラフ29は上部振動体22とともに移動するので、上記動作を繰り返すことによって、トラフ29が振動し、トラフ29上の物品が前方へ搬送される。トラフ29の後部に分散フィーダ11から物品が供給され、トラフ29を振動させることにより物品は前方向へ搬送され、トラフ29の前方側の先端から排出される。この直進フィーダ12において、前方側は物品搬送の下流側となり、後方側は物品搬送の上流側となる。   For example, a rectangular wave voltage is repeatedly applied to the electromagnet 25 to vibrate the trough 29 and convey the article. Here, when a voltage is applied to the electromagnet 25, the electromagnet 25 attracts the attracted member 26 fixed to the upper vibrating body 22. At this time, the upper vibrating body 22 moves to the electromagnet 25 side, that is, rearward and obliquely downward, as the leaf springs 23a, 23b, and 24 are elastically deformed. Next, when the application of voltage to the electromagnet 25 is stopped, the attractive force generated in the electromagnet 25 is released, and the upper vibrating body 22 moves obliquely upward in the forward direction by the elastic repulsive force of the leaf springs 23a, 23b, and 24. Since the trough 29 moves together with the upper vibrating body 22, the trough 29 vibrates by repeating the above operation, and the articles on the trough 29 are conveyed forward. Articles are supplied from the dispersion feeder 11 to the rear portion of the trough 29, and the articles are conveyed forward by vibrating the trough 29 and discharged from the front end of the trough 29. In this linear feeder 12, the front side is the downstream side of the article conveyance, and the rear side is the upstream side of the article conveyance.

なお、直進フィーダ12は、下部振動体21を主体とする下部振動系と、上部振動体22、取付支持部28およびトラフ29を主体とする上部振動系とを有する2自由度の振動系である。この上部振動系と下部振動系とは、振動の振幅が質量と反比例した関係で振動するので、下部振動体21に上方へ突出したウエート部21aを設けて、下部振動体21の質量を大きくしている。また、加振手段として、上部振動体22には質量の小さな被吸着部材26を取付け、下部振動体21に質量の大きな電磁石25を取り付けている。上部振動系の質量には、上部振動体22、被吸着部材26、取付支持部28及びトラフ29の質量が含まれ、下部振動系の質量には、下部振動体21及び電磁石25の質量が含まれる。そして、前述のように電磁石25に間欠的に電圧が印加されることにより下部振動系と上部振動系との間に振動が与えられ、トラフ29上の物品が搬送される。   The rectilinear feeder 12 is a two-degree-of-freedom vibration system having a lower vibration system mainly including the lower vibration body 21 and an upper vibration system mainly including the upper vibration body 22, the attachment support portion 28, and the trough 29. . Since the upper vibration system and the lower vibration system vibrate in a relationship in which the amplitude of vibration is inversely proportional to the mass, a weight portion 21a protruding upward is provided on the lower vibration body 21 to increase the mass of the lower vibration body 21. ing. Further, as the vibration means, an attracting member 26 having a small mass is attached to the upper vibrating body 22, and an electromagnet 25 having a large mass is attached to the lower vibrating body 21. The mass of the upper vibration system includes the masses of the upper vibration body 22, the attracted member 26, the mounting support portion 28, and the trough 29, and the mass of the lower vibration system includes the masses of the lower vibration body 21 and the electromagnet 25. It is. Then, as described above, the voltage is intermittently applied to the electromagnet 25 to cause vibration between the lower vibration system and the upper vibration system, and the article on the trough 29 is conveyed.

本実施形態の直進フィーダ12は、小型化された組合せ秤に用いられており、直進フィーダ12の後方側に分散フィーダ11が接近して配置されるため、下部振動体21のウエート部21aの後方側に図4に示すようなバランス調整部21bを設けることができず、上部振動系と下部振動系の重心バランスを理想的な重心バランスとなるように設定することができない。   The rectilinear feeder 12 of the present embodiment is used in a miniaturized combination weigher. Since the dispersion feeder 11 is disposed close to the rear side of the rectilinear feeder 12, the rear portion of the weight portion 21a of the lower vibrating body 21 is disposed. 4 cannot be provided on the side, and the center-of-gravity balance between the upper vibration system and the lower vibration system cannot be set to an ideal center-of-gravity balance.

そこで、本実施形態では、上部振動系に対する下部振動系の質量比を大きくするため、前方側の板ばねが左右に離間して配置された一対の板ばね23a、23bからなり、この一対の板ばね23a、23bの間に電磁石25を配置している。これにより図4に示す従来の直進フィーダと比較して、後方側の板ばね24を前寄りに配設し、下部振動体21のウエート部21aの領域を大きくすることができる。このことについて図3を参照して説明する。   Therefore, in the present embodiment, in order to increase the mass ratio of the lower vibration system to the upper vibration system, the front leaf springs are composed of a pair of leaf springs 23a and 23b that are spaced apart on the left and right. An electromagnet 25 is disposed between the springs 23a and 23b. As a result, compared to the conventional linear feeder shown in FIG. 4, the leaf spring 24 on the rear side can be disposed closer to the front, and the area of the weight portion 21 a of the lower vibrating body 21 can be increased. This will be described with reference to FIG.

図3(a)は、図2に示す本実施形態の直進フィーダの水平断面を示す概略模式図であり、図3(b)は、本実施形態の変形例の直進フィーダの水平断面を示す概略模式図であり、図3(c)は、図4に示す従来の直進フィーダにおいてバランス調整部21bを設けなかった場合(バランス調整部21bを取り除いた場合)の水平断面を示す概略模式図である。   FIG. 3A is a schematic diagram showing a horizontal section of the rectilinear feeder of the present embodiment shown in FIG. 2, and FIG. 3B is a schematic diagram showing a horizontal section of a rectilinear feeder of a modification of the present embodiment. FIG. 3C is a schematic diagram showing a horizontal cross section when the balance adjusting portion 21b is not provided in the conventional linear feeder shown in FIG. 4 (when the balance adjusting portion 21b is removed). .

本実施形態の直進フィーダは、図3(a)に示すように、前方側の板ばねを左右に離間して配置された一対の板ばね23a、23bで構成し、この一対の板ばね23a、23bの間に電磁石25を配置している。これにより、図3(c)に示す従来の直進フィーダの場合と比較すれば、電磁石25を前寄りに配置できる。そして、後方側の板ばね24も前寄りに配置し、ウエート部21aを前方へ延設して大きくすることができる。   As shown in FIG. 3A, the linear feeder of the present embodiment is configured by a pair of leaf springs 23a and 23b that are spaced apart from each other on the front side, and the pair of leaf springs 23a, An electromagnet 25 is disposed between 23b. Thereby, compared with the case of the conventional linear feeder shown in FIG.3 (c), the electromagnet 25 can be arrange | positioned forward. And the leaf | plate spring 24 of the back side can also be arrange | positioned forward, and the weight part 21a can be extended ahead and enlarged.

また、図3(b)に示す本実施形態の変形例の直進フィーダでは、後方側の板ばねが左右に離間して配置される一対の板ばね24a、24bからなり、この一対の板ばね24a、24bの間に電磁石25を配置している。言い換えれば、後方側の板ばねを左右に離間した一対の板ばね24a、24bで構成し、この一対の板ばね24a、24bを電磁石25を間に挟むようにして前寄りに配置している。このように、後方側の板ばね24a、24bを前寄りに配置することにより、ウエート部21aを前方へ延設して大きくすることができる。   Further, in the linear feeder of the modified example of the present embodiment shown in FIG. 3B, the leaf springs on the rear side are composed of a pair of leaf springs 24a and 24b spaced apart from each other on the left and right, and this pair of leaf springs 24a. , 24b, an electromagnet 25 is disposed. In other words, the leaf springs on the rear side are constituted by a pair of leaf springs 24a and 24b separated from each other on the left and right sides, and the pair of leaf springs 24a and 24b are arranged forward with the electromagnet 25 interposed therebetween. Thus, by arranging the leaf springs 24a and 24b on the rear side toward the front, the weight portion 21a can be extended forward and enlarged.

以上のように、本実施形態では、図3(a)、(b)に示すように、ウエート部21aを前方へ延設して大きくすることによりウエート部21aの質量を大きくし、下部振動系の質量を大きくすることができる。すなわち、上部振動系に対する下部振動系の質量比を大きくすることができるので、下部振動系の振動の振幅を小さくし、搬送動作の安定性を向上することができる(すなわち、より安定した物品搬送を行える)。   As described above, in the present embodiment, as shown in FIGS. 3A and 3B, the weight portion 21a is enlarged by extending the weight portion 21a forward to increase the mass of the weight portion 21a. The mass of can be increased. That is, since the mass ratio of the lower vibration system to the upper vibration system can be increased, the vibration amplitude of the lower vibration system can be reduced and the stability of the conveying operation can be improved (that is, more stable article conveyance). Can be performed).

また、本実施形態では、図4に示す従来例のように、ウエート部21aの後方に大きく張り出したバランス調整部21bを設けた場合よりも、前後方向の長さを短縮することができ、直進フィーダの小型化を図ることが可能である。   Further, in the present embodiment, as in the conventional example shown in FIG. 4, the length in the front-rear direction can be shortened compared to the case where the balance adjustment portion 21b that protrudes greatly behind the weight portion 21a is provided, and the vehicle travels straight. It is possible to reduce the size of the feeder.

なお、本実施形態における組合せ秤に用いられる直進フィーダは、図1(b)のように放射状に複数配置されるため、図3(a)、(b)に示すように、下部振動体21の左右方向の幅が、前方側より後方側の方が狭くなっている。そのため、図3(b)に示す構成の直進フィーダより、図3(a)に示す構成の直進フィーダの方が、左右に離間した一対の板ばねの配置が容易になる。   In addition, since a plurality of linearly moving feeders used in the combination weigher in the present embodiment are arranged radially as shown in FIG. 1B, as shown in FIGS. The width in the left-right direction is narrower on the rear side than on the front side. For this reason, the linear feeder having the configuration shown in FIG. 3A is easier to dispose the pair of leaf springs separated from each other than the linear feeder having the configuration shown in FIG.

また、例えば図1に示すように本実施形態の直進フィーダを用いた組合せ秤では、直進フィーダの小型化を図ることができるとともに物品の搬送動作の安定性を向上することができるので、組合せ精度の高い組合せ秤の小型化が容易になる。   Further, for example, as shown in FIG. 1, in the combination weigher using the linear feeder of this embodiment, the linear feeder can be reduced in size and the stability of the article transport operation can be improved. This makes it easy to reduce the size of a combination weigher having a high height.

本発明は、小型化を図ることができるとともに物品の搬送動作の安定性を向上することができる直進フィーダ及びそれを用いた組合せ秤等として有用である。   INDUSTRIAL APPLICABILITY The present invention is useful as a linear feeder capable of reducing the size and improving the stability of an article conveying operation, and a combination weigher using the linear feeder.

10 センター基体
11 分散フィーダ
12 直進フィーダ
13 供給ホッパ
14 計量ホッパ
15 重量センサ
21 下部振動体
21a ウエート部
22 上部振動体
23、23a、23b 前方側の板ばね
24、24a、24b 後方側の板ばね
25 電磁石
26 被吸着部材
28 取付支持部
29 トラフ
30、31 防振体
DESCRIPTION OF SYMBOLS 10 Center base | substrate 11 Dispersion feeder 12 Straight advance feeder 13 Supply hopper 14 Weighing hopper 15 Weight sensor 21 Lower vibration body 21a Weight part 22 Upper vibration bodies 23, 23a, 23b Front side leaf springs 24, 24a, 24b Rear side leaf spring 25 Electromagnet 26 Adsorbed member 28 Mounting support 29 Trough 30, 31 Vibration isolator

Claims (3)

後方側部分に供給される物品を振動によって前方側へ搬送し前方側の先端から排出するためのトラフを有する直進フィーダであって、
固定面上に防振体を介して支持され、後方部分に上方へ突設したウエート部を有する下部振動体を主体とする下部振動系と、
前記下部振動体の前記ウエート部より前方部分の上方に配置される上部振動体と、前記上部振動体の上部に取付けられた前記トラフとを主体とする上部振動系と、
前記下部振動体の前記ウエート部より前方において後方側と前方側とに離間して対向配置され、前記上部振動体と前記下部振動体の前記前方部分とを連結する後方側の板ばね及び前方側の板ばねと、
前記ウエート部より前方側に配置される電磁石を有し、前記下部振動系と前記上部振動系との間に振動を与える加振手段とを備え、
前記前方側の板ばね及び前記後方側の板ばねのうちの一方が、左右に離間して配置された一対の板ばねからなり、この一対の板ばねの間に前記電磁石が配設された、直進フィーダ。
A linear feeder having a trough for conveying articles supplied to the rear side portion to the front side by vibration and discharging them from the front end,
A lower vibration system mainly composed of a lower vibration body supported by a vibration isolator on a fixed surface and having a weight portion protruding upward at a rear portion;
An upper vibration system mainly composed of an upper vibration body disposed above a weight portion of the lower vibration body and a trough attached to an upper portion of the upper vibration body;
A leaf spring on the rear side and a front side, which are disposed opposite to each other in front and behind the weight portion of the lower vibrating body and are spaced apart from each other and connecting the upper vibrating body and the front portion of the lower vibrating body. Leaf springs of
An electromagnet disposed on the front side of the weight part, and including an excitation means for applying vibration between the lower vibration system and the upper vibration system;
One of the front-side leaf spring and the rear-side leaf spring is composed of a pair of leaf springs spaced apart from each other on the left and right, and the electromagnet is disposed between the pair of leaf springs. Straight feeder.
前記下部振動体は、その左右方向の幅が前方側より後方側の方が狭くなっており、
前記前方側の板ばねが左右に離間して配置された一対の板ばねからなり、この一対の板ばねの間に前記電磁石が配設された、請求項1に記載の直進フィーダ。
The lower vibrating body has a width in the left-right direction that is narrower on the rear side than on the front side,
The rectilinear feeder according to claim 1, wherein the front-side leaf spring includes a pair of leaf springs arranged to be separated from each other in the left-right direction, and the electromagnet is disposed between the pair of leaf springs.
外部から供給される物品を中央部から周縁部に向かう方向へ送り出す円錐形状の分散フィーダと、前記分散フィーダの周囲に放射状に複数設けられ、円状に配設された複数のホッパのそれぞれへ物品を搬送する直進フィーダとを有する組合せ秤であって、
前記直進フィーダが請求項1または2に記載の直進フィーダからなる組合せ秤。
A conical dispersion feeder that feeds articles supplied from the outside in the direction from the central portion toward the peripheral portion, and a plurality of items radially provided around the dispersion feeder, and each of the plurality of circularly disposed hoppers. A combination weigher having a linear feeder for conveying
A combination weigher comprising the linear feeder according to claim 1 or 2.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105081736A (en) * 2014-05-12 2015-11-25 昆山迎翔光电科技有限公司 Automatic tail shank press
KR101882580B1 (en) 2016-09-28 2018-08-24 서대관 Trough for vibrating feeder
KR102002261B1 (en) * 2018-11-12 2019-07-19 서대관 Trough for bolt type component parts using vibrating feeder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05338762A (en) * 1992-06-09 1993-12-21 Yamato Scale Co Ltd Vibrating feeder
JPH09165113A (en) * 1995-12-15 1997-06-24 Ishida Co Ltd Plate sprint for electromagnetic feeder and manufacture of it

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05338762A (en) * 1992-06-09 1993-12-21 Yamato Scale Co Ltd Vibrating feeder
JPH09165113A (en) * 1995-12-15 1997-06-24 Ishida Co Ltd Plate sprint for electromagnetic feeder and manufacture of it

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105081736A (en) * 2014-05-12 2015-11-25 昆山迎翔光电科技有限公司 Automatic tail shank press
KR101882580B1 (en) 2016-09-28 2018-08-24 서대관 Trough for vibrating feeder
KR102002261B1 (en) * 2018-11-12 2019-07-19 서대관 Trough for bolt type component parts using vibrating feeder

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