JPH09109028A - Hopper device for blasting machine - Google Patents

Hopper device for blasting machine

Info

Publication number
JPH09109028A
JPH09109028A JP29191295A JP29191295A JPH09109028A JP H09109028 A JPH09109028 A JP H09109028A JP 29191295 A JP29191295 A JP 29191295A JP 29191295 A JP29191295 A JP 29191295A JP H09109028 A JPH09109028 A JP H09109028A
Authority
JP
Japan
Prior art keywords
abrasive grain
abrasive
hopper
hopper tank
casing
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.)
Pending
Application number
JP29191295A
Other languages
Japanese (ja)
Inventor
Yuji Nagamori
勇次 永森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAITO IKA KOGYO KK
SAITOU IKA KOGYO KK
Original Assignee
SAITO IKA KOGYO KK
SAITOU IKA KOGYO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SAITO IKA KOGYO KK, SAITOU IKA KOGYO KK filed Critical SAITO IKA KOGYO KK
Priority to JP29191295A priority Critical patent/JPH09109028A/en
Publication of JPH09109028A publication Critical patent/JPH09109028A/en
Pending legal-status Critical Current

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  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

PROBLEM TO BE SOLVED: To eliminate a problem of clogging of abrasive grains in a state of forming a bridge by making abrasive grains in an abrasive grain storage space flow by their own weight to reach a bottom part of a hopper tank, and discharging the abrasive grains to an abrasive grain delivery space through an abrasive grain passage clearance between an abrasive grain receiving port and the throttle face of a receiving port throttle member. SOLUTION: A casing 2 provided with an abrasive grain blow-off means and the like is provided with an abrasive grain feeding means 11, and the abrasive grain feeding means 11 is provided with a hopper tank 12 with an abrasive grain storage space 12a formed inside. A bottom member 12b of the hopper tank 12 is provided with an abrasive grain lead-in hole 13 with a receiving port 13a formed being opened upward, and an abrasive grain feed pipe 15 connected to the casing 2 is provided being continuously connected to the abrasive grain lead-in hole 13. A throttle means 65 is disposed at the bottom part 12b, and a clearance enabling beads TR or the like to pass through is formed between the throttle face of inverted conical shape and the receiving port 13, almost annularly along the throttle face so as to dissolve bridge-like clogging.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、粉末状の微細砥粒を高
圧エアで加速してノズル等より吹き出し、吹き出された
砥粒の運動エネルギーにより物品を加工するブラスト加
工を行うブラスト加工機において、吹き出しのための砥
粒を供給する、ブラスト加工機用のホッパ装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blasting machine for blasting a powdery fine abrasive grain by accelerating it with high pressure air, blowing it out from a nozzle or the like, and processing the article by the kinetic energy of the abrasive grain blown out. The present invention relates to a hopper device for a blasting machine, which supplies abrasive grains for blowing.

【０００２】[0002]

【従来の技術】図１３は、従来のホッパ装置の一例を示
した側断面図である。従来、粉末状の微細砥粒を高圧エ
アで加速してノズルより吹き出し、吹き出された砥粒の
運動エネルギーにより物品を加工するブラスト加工が行
われており、該ブラスト加工には各種のブラスト加工機
が使用されている。また、これらのブラスト加工機に
は、所定量の砥粒を貯蔵しておき、砥粒の吹き出しに際
して、貯蔵されていた砥粒を吹き出し用に供給する砥粒
供給手段であるホッパ装置が設けられている。2. Description of the Related Art FIG. 13 is a side sectional view showing an example of a conventional hopper device. Conventionally, blasting is performed by accelerating powdery fine abrasive grains with high-pressure air and blowing it out from a nozzle to process an article with the kinetic energy of the abrasive grains blown out. Various blasting machines are used for the blasting. Is used. Further, these blasting machines are provided with a hopper device which is an abrasive grain supply means for storing a predetermined amount of abrasive grains and, at the time of blowing out the abrasive grains, supplying the stored abrasive grains for blowing out. ing.

【０００３】例えば、従来のホッパ装置９０は、図１３
に示すように、砥粒を貯蔵自在なホッパタンク９１を有
しており、該ホッパタンク９１の底部には砥粒が流入し
得る受入口９１ａが形成されている。またホッパタンク
９１の受入口９１ａ側には、該受入口９１ａより受け入
れた砥粒を下方に、砥粒の吹き出し用として輸送供給す
る砥粒供給管９２が設けられている。また、砥粒が受入
口９１ａにおいてブリッジ等を形成して詰まるようなこ
とを防止するため、ホッパタンク９１の底部には、受入
口９１ａを覆う形で、例えばコーン部材９３のような、
断面積が上方に向けて小さくなったテーパ状の部材が設
置されている。コーン部材９３は、その内部に流通空間
９３ａが、前記受入口９１ａの上に連通接続された形で
形成されており、コーン部材９３の側部には、該コーン
部材９３の側方であるホッパタンク９１内部の空間と流
通空間９３ａとを横方向に連通する形で砥粒流入孔９４
が形成されている。つまり、コーン部材９３により、受
入口９１ａの真上にかかる砥粒による圧力を側方に分散
させる工夫がなされている。For example, a conventional hopper device 90 is shown in FIG.
As shown in (1), it has a hopper tank 91 capable of storing abrasive grains, and a receiving port 91a into which abrasive grains can flow is formed at the bottom of the hopper tank 91. Further, on the receiving port 91a side of the hopper tank 91, there is provided an abrasive grain supply pipe 92 for transporting and feeding the abrasive grains received from the receiving port 91a downward for blowing the abrasive grains. In order to prevent the abrasive grains from forming a bridge or the like at the receiving port 91a and clogging, the bottom of the hopper tank 91 covers the receiving port 91a, such as a cone member 93.
A tapered member whose cross-sectional area is reduced upward is installed. The cone member 93 is formed such that a circulation space 93a is formed in the cone member 93 so as to be communicated with and connected to the receiving port 91a. The cone member 93 has a hopper tank on a side portion of the cone member 93. Abrasive grain inflow hole 94 is formed by laterally connecting the space inside 91 and the circulation space 93a.
Are formed. That is, the cone member 93 is devised to laterally disperse the pressure of the abrasive particles directly above the receiving port 91a.

【０００４】[0004]

【発明が解決しようとする課題】しかし従来のホッパ装
置では、例えば上述したホッパ装置９０においては、砥
粒流入孔９４付近で砥粒が停滞してブリッジ等を形成し
てまうなどして、吹き出し用の砥粒がスムーズに供給さ
れず、安定した吹き出しが困難となっていた。However, in the conventional hopper device, for example, in the above-mentioned hopper device 90, the abrasive grains stagnate in the vicinity of the abrasive grain inflow hole 94 to form a bridge or the like and blow out. The abrasive grains for polishing were not supplied smoothly, making stable blowing difficult.

【０００５】よって本発明は上記事情に鑑み、ブラスト
加工機において安定した吹き出しが行えるような、ブラ
スト加工機用のホッパ装置を提供することを目的として
いる。Therefore, in view of the above-mentioned circumstances, it is an object of the present invention to provide a hopper device for a blasting machine, which enables stable blasting in the blasting machine.

【０００６】[0006]

【課題を解決するための手段】本発明のうち第１の発明
は、砥粒（ＴＲ）を貯留し得る砥粒送出空間（３）が内
部に形成されたケーシング（２）及び、該砥粒送出空間
（３）に貯留された砥粒（ＴＲ）を取り出して外部に吹
き出し得る砥粒取出・吹出手段（７、９、５０、５１）
及び、前記砥粒送出空間（３）に砥粒（ＴＲ）を供給し
得るホッパ装置（１１）を有したブラスト加工機（１）
において、前記ホッパ装置（１１）は、ホッパタンク
（１２）を、前記ケーシング（２）の上方に配置され得
る形で有し、前記ホッパタンク（１２）の内部に砥粒貯
蔵空間（１２ａ）を、砥粒（ＴＲ）を貯蔵自在な形で形
成し、前記ホッパタンク（１２）に砥粒輸送路（１３、
１５）を、該砥粒輸送路（１３、１５）により前記ホッ
パタンク（１２）と前記ケーシング（２）との間を接続
し得る形で設け、前記砥粒輸送路（１３、１５）の上端
に砥粒受入口（１３ａ）を、前記ホッパタンク（１２）
の底部（１２ｂ）において、前記砥粒貯蔵空間（１２
ａ）に開口した形で形成し、前記砥粒輸送路（１３、１
５）の下端に砥粒排出口（１５ａ）を、前記ケーシング
（２）の前記砥粒送出空間（３）に開口した形で形成
し、前記砥粒受入口（１３ａ）に、逆錐状の絞り面（６
６）が形成された受入口絞り部材（６５）を、該絞り面
（６６）を前記砥粒受入口（１３ａ）に対向させた形で
挿嵌配設し、前記砥粒受入口（１３ａ）と前記絞り面
（６６）との間に、砥粒通過間隙（７０）を形成して構
成される。A first aspect of the present invention is a casing (2) having an abrasive grain delivery space (3) capable of storing abrasive grains (TR) formed therein, and the abrasive grains. Abrasive grain take-out / blowing means (7, 9, 50, 51) that can take out the abrasive grains (TR) stored in the delivery space (3) and blow them out to the outside.
And a blasting machine (1) having a hopper device (11) capable of supplying abrasive grains (TR) to the abrasive grain delivery space (3).
In the above, the hopper device (11) has a hopper tank (12) in a form that can be arranged above the casing (2), and an abrasive grain storage space (12a) is provided inside the hopper tank (12). The grains (TR) are formed in a storable shape, and the abrasive grain transport path (13,
15) is provided so that the hopper tank (12) and the casing (2) can be connected by the abrasive grain transport passages (13, 15), and is provided at the upper end of the abrasive grain transport passages (13, 15). The abrasive grain receiving port (13a) is connected to the hopper tank (12).
At the bottom (12b) of the abrasive grain storage space (12
It is formed in a shape opened in a), and the abrasive grain transport paths (13, 1,
5) An abrasive grain discharge port (15a) is formed at the lower end of the casing (5) so as to open in the abrasive grain delivery space (3) of the casing (2), and has an inverted cone shape at the abrasive grain inlet port (13a). Aperture surface (6
6) is formed by inserting and fitting the inlet throttle member (65) with the throttle surface (66) facing the abrasive grain inlet port (13a). An abrasive grain passage gap (70) is formed between the squeeze surface (66) and the diaphragm surface (66).

【０００７】また本発明のうち第２の発明は、第１の発
明によるブラスト加工機（１）用のホッパ装置（１１）
において、前記受入口絞り部材（６５）は、前記ホッパ
タンク（１２）の底部（１２ｂ）に載置されている。A second invention of the present invention is a hopper device (11) for a blasting machine (1) according to the first invention.
In the above, the inlet throttle member (65) is mounted on the bottom portion (12b) of the hopper tank (12).

【０００８】また本発明のうち第３の発明は、第２の発
明によるブラスト加工機（１）用のホッパ装置（１１）
において、前記受入口絞り部材（６５）に被ガイド部材
（６７、６７ａ）を、該受入口絞り部材（６５）から上
方に伸延した形で設け、前記ホッパタンク（１２）の上
部にガイド手段（２７）を、前記被ガイド部材（６７、
６７ａ）の横方向の移動を防止し得る形で、前記被ガイ
ド部材（６７、６７ａ）の上部に対応した位置に設け
た。A third invention of the present invention is a hopper device (11) for a blasting machine (1) according to the second invention.
In the inlet throttle member (65), guided members (67, 67a) are provided so as to extend upward from the inlet throttle member (65), and a guide means (27) is provided above the hopper tank (12). ) Is the guided member (67,
67a) is provided at a position corresponding to the upper part of the guided member (67, 67a) so as to prevent the lateral movement of 67a).

【０００９】また本発明のうち第４の発明は、第１の発
明によるブラスト加工機（１）用のホッパ装置（１１）
において、前記受入口絞り部材（６５）に突起部材（６
８）を、該受入口絞り部材（６５）から下方に、前記砥
粒輸送路（１３、１５）内に伸延した形で設けた。A fourth invention of the present invention is a hopper device (11) for a blasting machine (1) according to the first invention.
At the receiving throttle member (65), the projection member (6
8) is provided downward from the inlet throttle member (65) in the form of extending into the abrasive grain transport passages (13, 15).

【００１０】なお、（ ）内の番号等は、図面における
対応する要素を示す、便宜的なものであり、従って、本
記述は図面上の記載に限定拘束されるものではない。以
下の「作用」の欄についても同様である。The numbers in parentheses () indicate the corresponding elements in the drawings for the sake of convenience, and the present description is not limited to the description in the drawings. The same applies to the following “action” column.

【００１１】[0011]

【作用】上記した構成により本発明のうち第１の発明で
は、砥粒貯蔵空間（１２ａ）に貯蔵されていた砥粒（Ｔ
Ｒ）が自重により下方に流動してホッパタンク（１２）
の底部（１２ｂ）に到達し、該底部（１２ｂ）に到達し
た砥粒（ＴＲ）が、受入口絞り部材（６５）の絞り面
（６６）と、砥粒受入口（１３ａ）との間の砥粒通過間
隙（７０）を通過して砥粒輸送路（１３、１５）に流入
し、該砥粒輸送路（１３、１５）を通って砥粒排出口
（１５ａ）を介して砥粒送出空間（３）に排出される。According to the first aspect of the present invention having the above structure, the abrasive grains (T) stored in the abrasive grain storage space (12a) are
R) flows downward due to its own weight and the hopper tank (12)
Of the abrasive grains (TR) that have reached the bottom portion (12b) of the blade and that have reached the bottom portion (12b) between the aperture surface (66) of the inlet throttle member (65) and the abrasive grain inlet (13a). It passes through the abrasive grain passage gap (70), flows into the abrasive grain transport passages (13, 15), and passes through the abrasive grain transport passages (13, 15) and is delivered through the abrasive grain discharge port (15a). It is discharged into the space (3).

【００１２】また本発明のうち第２の発明では、受入口
絞り部材（６５）は、砥粒輸送路（１３、１５）側から
の空気圧等により上方等に容易に押圧移動され得る。In the second aspect of the present invention, the inlet throttle member (65) can be easily pushed and moved upward by air pressure from the abrasive grain transport passage (13, 15) side.

【００１３】また本発明のうち第３の発明では、受入口
絞り部材（６５）に設けられた被ガイド部材（６７、６
７ａ）の横方向の移動がガイド手段（２７）により防止
されるため、該受入口絞り部材（６５）の横方向の移動
は極力防止される。In the third aspect of the present invention, the guided members (67, 6) provided on the inlet throttle member (65) are provided.
Since the guide means (27) prevents the lateral movement of 7a), the lateral movement of the inlet throttle member (65) is prevented as much as possible.

【００１４】また本発明のうち第４の発明では、受入口
絞り部材（６５）に設けられた突起部材（６８）の横方
向の移動が砥粒輸送路（１３、１５）にガイドされる形
で防止されている。In the fourth aspect of the present invention, the lateral movement of the projection member (68) provided on the inlet throttle member (65) is guided by the abrasive grain transport paths (13, 15). Are prevented by.

【００１５】[0015]

【実施例】以下、本発明の実施例を図面に基づき説明す
る。図１は、本発明によるホッパ装置の一例が適用され
たブラスト加工機であり、ケーシング側を示した側断面
図、図２は、図１に示すブラスト加工機のうち、ホッパ
タンク側を示した側断面図、図３は、図１のＸ１−Ｙ１
線による縦断面図、図４は、図２のＸ２−Ｙ２線による
平断面図、図５は、送出回転体付近を示した斜視図、図
６は、送出空間加圧手段の箱体を示した側断面図、図７
は、受入口絞り部材付近を示した詳細図、図８は、図７
のＸ３−Ｙ３線による断面図、図９及び図１０は、本発
明によるホッパ装置の別の一例であり、受入口絞り部材
付近を示した図、図１１及び図１２は、本発明によるホ
ッパ装置の別の一例を示した側断面図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a blasting machine to which an example of a hopper device according to the present invention is applied, and is a side sectional view showing a casing side. FIG. 2 is a side showing a hopper tank side of the blasting machine shown in FIG. Cross-sectional view, FIG. 3 is X1-Y1 of FIG.
2 is a vertical sectional view taken along line X2-Y2 in FIG. 2, FIG. 5 is a perspective view showing the vicinity of the delivery rotating body, and FIG. 6 is a box body of the delivery space pressurizing means. Side sectional view, Fig. 7
Is a detailed view showing the vicinity of the inlet throttle member, and FIG.
9 is a cross-sectional view taken along line X3-Y3 of FIG. 9, and FIG. 9 and FIG. 10 are other examples of the hopper device according to the present invention. FIG. 11 and FIG. FIG. 6 is a side sectional view showing another example of FIG.

【００１６】ブラスト加工機１は、図１乃至図３に示す
ように、図示しない作業場に図示しない適宜な設置部材
を介して設置されたケーシング２を有しており、ケーシ
ング２内部には砥粒送出空間３及び駆動装置収納空間５
が形成されている。砥粒送出空間３は図１の紙面左右方
向に扁平な鉛直断面が長円形の形状に形成されており、
砥粒送出空間３のうち図１の紙面左側は砥粒回転送出空
間４５、図１の紙面右側は砥粒貯留空間４６となってい
る。これら砥粒回転送出空間４５及び砥粒貯留空間４６
は水平方向に互いに連通配置されており、これら砥粒回
転送出空間４５及び砥粒貯留空間４６には、砥粒である
ビーズＴＲ（即ち、ガラスビーズ又は粉末状の微細砥
粒）が貯留自在となっている。特に砥粒回転送出空間４
６には図１の二点鎖線で示す所定の砥粒貯留レベルＴＬ
まで、ビーズＴＲが貯留し得るようになっている。一
方、砥粒送出空間３と駆動装置収納空間５との間には、
図３に示すように、これら両者３、５を隔てる形で鉛直
な板状の仕切部材６が設けられている。ケーシング２内
には、図３に示すように、回転駆動手段７（なお図３の
うち回転駆動手段７と後述の送出回転体９に関しては側
面が示されている）が設けられており、回転駆動手段７
は、駆動装置収納空間５内に収納設置された電動のモー
タユニット７ｂを有している。モータユニット７には略
水平な方向である図３の矢印Ｂ、Ｃ方向（即ち図３の紙
面左右方向）に伸延した形の駆動軸部材７ａが接続され
設けられており、従ってモータユニット７は該駆動軸部
材７ａを、矢印Ｂ、Ｃ方向に伸延する所定の回転軸Ｑ１
を中心に図の矢印Ａ方向に軸回転駆動自在となってい
る。なお、回転軸Ｑ１はケーシング２に対して固定的に
設定配置されている。また、この駆動軸部材７ａは、前
記仕切部材６を矢印Ｂ、Ｃ方向に貫通した形で配置され
ており、従って駆動軸部材７ａの先端側、即ち矢印Ｂ側
は前記砥粒送出空間３の砥粒回転送出空間４５に位置し
ている（なお、駆動軸部材７ａと仕切部材６との間には
公知のオイルシール等が施されており、駆動軸部材７ａ
と仕切部材６との間は極力気密になっている。）。駆動
軸部材７ａの先端側には、図１、図３、図５に示すよう
に、基本的に円盤状に形成された送出回転体９が該駆動
軸部材７ａと同心状に接続され設けられており、従って
送出回転体９は前記モータユニット７によって駆動軸部
材７ａを介して図の矢印Ａ方向に回転駆動され得るよう
になっている。なお、送出回転体９と駆動軸部材７ａと
が同心状に接続されていることより、送出回転体９の回
転中心Ｑ２は駆動軸部材７ａの回転軸Ｑ１と一致してお
り、回転中心Ｑ２は前記砥粒貯留レベルＴＬよりも下方
に位置している。また、送出回転体９は、該送出回転体
９の天端位置が常に前記砥粒貯留レベルＴＬよりも上方
に位置するように配置されている。言い替えれば、前記
砥粒回転送出空間４５に送出回転体９が、ケーシング２
に対して回転軸Ｑ１を中心に回転自在なる形で設けられ
ており、送出回転体９には、該送出回転体９を回転軸Ｑ
１を中心に回転駆動させ得る回転駆動手段７が設けられ
ているということであり、また回転駆動手段７は、送出
回転体９に接続され、回転軸Ｑ１を中心に軸回転自在
で、前記仕切部材６を貫通した形の駆動軸部材７ａ及
び、駆動装置収納空間５に収納され、駆動軸部材７ａの
駆動装置収納空間５側の端部に、該駆動軸部材７ａを軸
回転駆動し得るように接続されたモータユニット７ｂに
よって構成されているということである。なお、モータ
ユニット７ｂと図示しない操作部或いは図示しない電源
ユニットを連絡接続する電気ケーブル６１は、図３に示
すように、駆動装置収納空間５とケーシング２外部とに
亙って、該ケーシング２のうち駆動装置収納空間５に隣
接する後壁部２ｂを貫通する形で設けられており、後壁
部２ｂにおける電気ケーブル６１の貫通部位には、駆動
装置収納空間５からケーシング２外部に向かって内部が
収斂する形のテーパ穴２ｃが該後壁部２ｂを貫通する形
で設けられている。また、テーパ穴２ｃには、シリコン
等の接着材で形成され、該テーパ穴２ｃに整合した形、
即ちくさび形のプラグ６２が接着挿入されており、前記
電気ケーブル６１は該プラグ６２を貫通する形で該プラ
グ６２と接着接続されている。つまり、電気ケーブル６
１が接着接続されたプラグ６２がテーパ穴２ｃに挿入接
着されることにより、該電気ケーブル６１は後壁部２ｂ
を貫通した状態になっている。電気ケーブル６１は以上
のように後壁部２ｂを貫通した状態になっているので、
後述するように駆動装置収納空間５内の気圧がケーシン
グ２外部よりも高圧になった場合、プラグ６２には差圧
による力が該プラグ６２をテーパ穴２ｃに更に一層食い
込ませる形で作用する。従ってテーパ穴２ｃにおけるプ
ラグ６２と後壁部２ｂとの間のシールは更に一層確実に
なり都合がよい。As shown in FIGS. 1 to 3, the blasting machine 1 has a casing 2 installed in an unillustrated work place through an appropriate installation member (not shown), and the inside of the casing 2 has abrasive grains. Delivery space 3 and drive device storage space 5
Are formed. The abrasive grain delivery space 3 has a flat vertical cross section in the left-right direction of the paper of FIG.
In the abrasive grain delivery space 3, the left side of the paper surface of FIG. 1 is the abrasive grain rotation delivery space 45, and the right side of the paper surface of FIG. 1 is the abrasive grain storage space 46. These abrasive grain rotation delivery space 45 and abrasive grain storage space 46
Are arranged so as to communicate with each other in the horizontal direction, and beads TR (that is, glass beads or fine abrasive grains in powder form) as abrasive grains can be stored in the abrasive grain rotation delivery space 45 and the abrasive grain storage space 46. Has become. Especially the abrasive grain rotation delivery space 4
6 is a predetermined abrasive grain storage level TL indicated by the chain double-dashed line in FIG.
Up to now, the beads TR can be stored. On the other hand, between the abrasive grain delivery space 3 and the drive device storage space 5,
As shown in FIG. 3, a vertical plate-shaped partition member 6 is provided so as to separate the both parts 3 and 5. As shown in FIG. 3, the casing 2 is provided with a rotation driving means 7 (the side surfaces of the rotation driving means 7 and the later-described delivery rotating body 9 are shown in FIG. 3). Drive means 7
Has an electric motor unit 7b housed and installed in the drive device housing space 5. The motor unit 7 is provided with a drive shaft member 7a extending in the substantially horizontal directions of arrows B and C in FIG. 3 (that is, the left-right direction on the paper surface of FIG. 3). A predetermined rotation axis Q1 extending the drive shaft member 7a in the directions of arrows B and C.
Axial rotation is possible in the direction of arrow A in the figure. The rotary shaft Q1 is fixedly set and arranged with respect to the casing 2. The drive shaft member 7a is arranged so as to penetrate the partition member 6 in the directions of arrows B and C. Therefore, the tip end side of the drive shaft member 7a, that is, the arrow B side, is located in the abrasive grain delivery space 3. It is located in the abrasive grain rotation delivery space 45 (note that a known oil seal or the like is provided between the drive shaft member 7a and the partition member 6).
The partition member 6 and the partition member 6 are as airtight as possible. ). As shown in FIG. 1, FIG. 3, and FIG. 5, the drive shaft member 7a is provided with a disk-shaped delivery rotary member 9 connected concentrically with the drive shaft member 7a, as shown in FIGS. Therefore, the delivery rotor 9 can be rotationally driven by the motor unit 7 in the direction of arrow A in the figure via the drive shaft member 7a. Since the delivery rotating body 9 and the drive shaft member 7a are connected concentrically, the rotation center Q2 of the delivery rotating body 9 coincides with the rotation axis Q1 of the drive shaft member 7a, and the rotation center Q2 is It is located below the abrasive grain storage level TL. Further, the delivery rotating body 9 is arranged so that the top end position of the delivery rotating body 9 is always located above the abrasive grain storage level TL. In other words, the delivery rotating body 9 is provided in the abrasive grain rotation delivery space 45,
Is provided so as to be rotatable about the rotation axis Q1 and the delivery rotation body 9 is provided with the rotation axis Q1.
It means that the rotation driving means 7 capable of rotating and driving about 1 is provided, and the rotation driving means 7 is connected to the delivery rotating body 9 and is rotatable about the rotation axis Q1 and the partitioning means. The drive shaft member 7a penetrating the member 6 is housed in the drive device housing space 5, and the drive shaft member 7a can be rotationally driven at the end of the drive shaft member 7a on the drive device housing space 5 side. This means that the motor unit 7b is connected to the motor unit 7b. The electric cable 61 for connecting the motor unit 7b to an operation unit (not shown) or a power supply unit (not shown) is connected to the drive unit housing space 5 and the outside of the casing 2 as shown in FIG. It is provided so as to penetrate the rear wall portion 2b adjacent to the drive device storage space 5, and the inside of the rear wall portion 2b from the drive device storage space 5 toward the outside of the casing 2 at the penetration portion of the electric cable 61. A tapered hole 2c having a converging shape is provided so as to penetrate the rear wall portion 2b. Further, the taper hole 2c is formed of an adhesive material such as silicon and has a shape aligned with the taper hole 2c.
That is, a wedge-shaped plug 62 is adhesively inserted, and the electric cable 61 is adhesively connected to the plug 62 so as to penetrate the plug 62. That is, the electric cable 6
By inserting and adhering the plug 62, to which 1 is adhesively connected, into the tapered hole 2c, the electric cable 61 is attached to the rear wall portion 2b.
Has been penetrated. Since the electric cable 61 is in a state of penetrating the rear wall portion 2b as described above,
As will be described later, when the atmospheric pressure in the drive device housing space 5 becomes higher than the outside of the casing 2, the force due to the differential pressure acts on the plug 62 in such a manner that the plug 62 further digs into the tapered hole 2c. Therefore, the seal between the plug 62 and the rear wall portion 2b in the tapered hole 2c is more reliable and convenient.

【００１７】送出回転体９は、図１、図３、図５に示す
ように、円盤状の２つの側円盤９ａ、９ａ及び、これら
側円盤９ａよりやや小径な円盤である１つの中央仕切板
４０を、中央仕切板４０が側円盤９ａ、９ａの間に位置
する形で、同心状に、かつ互いに平行配置した形で有し
ている。また、中央仕切板４０と矢印Ｂ側の側円盤９ａ
の間及び、中央仕切板４０と矢印Ｃ側の側円盤９ａの間
には、それぞれ中央円盤９ｂが、これら中央仕切板４０
と側円盤９ａの間に挟まれた形で設けられている。な
お、各中央円盤９ｂの直径は中央仕切板４０と略等しく
なっている（なお、図５では送出回転体９は、矢印Ｃ側
の側円盤９ａを欠いた形で示されている。）。また、各
中央円盤９ｂは公知のフライスカッター（或いは歯車等
でもよい）となっており、従って該中央円盤９ｂの外周
部９ｄ全周に亙っては複数の刃溝９ｅ（歯車の場合は歯
溝）が、前記回転中心Ｑ２を中心に等しい設置ピッチＳ
Ｐで形成されている。各中央円盤９ｂの各刃溝９ｅは、
該中央円盤９ｂを両側からはさんだ側円盤９ａと中央仕
切板４０により矢印Ｂ、Ｃ方向に閉塞された、従って送
出回転体９の回転中心Ｑ２に対して遠心方向にのみ開口
した砥粒捕集窪９ｃを形成している。即ち、これら砥粒
捕集窪９ｃは前記ビーズＴＲを捕集し得るようになって
おり、またこれら砥粒捕集窪９ｃは回転中心Ｑ２を中心
に等しい設置ピッチＳＰで形成されている。なお、送出
回転体９の外周部９ｄに形成された複数の砥粒捕集窪９
ｃは、これら砥粒捕集窪９ｃが、該外周部９ｄに亙って
環状に配置されてできる２列の砥粒捕集手段４１、４１
を構成しており、これら砥粒捕集手段４１、４１は矢印
Ｂ、Ｃ方向に沿って並列配置されている。また、これら
砥粒捕集手段４１、４１は、これら砥粒捕集手段４１、
４１間において、砥粒捕集窪９ｃの配置位相がずれて配
置されている。つまり、２つの中央円盤９ｂは、互いに
前記設置ピッチＳＰの２分の１の角度ＳＰＰだけズレた
形で配置されているので、送出回転体９全体では、砥粒
捕集窪９ｃは回転中心Ｑ２を中心に角度ＳＰＰのピッチ
で形成されていることになる。なお、送出回転体９の側
円盤９ａ、９ａの外側のうち外周部９ｄ付近には、複数
の砥粒掻き混ぜ爪４３が、前記回転軸Ｑ１に対して遠心
方向に突出した形で設けられている。即ち、送出回転体
９の回転により、複数の砥粒掻き混ぜ爪４３が回転し、
該送出回転体９の周囲のビーズＴＲが、これら砥粒掻き
混ぜ爪４３によって掻き混ぜ攪拌され得るようになって
いる。また、ケーシング２のうち、図３に示すように、
最も矢印Ｂ側に位置し、砥粒送出空間３に接している前
壁部２ａは、ケーシング２のうち該前壁部２ａ以外の部
位と図示しないボルト等を介して着脱自在になってお
り、送出回転体９と駆動軸部材７ａとの間も図示しない
所定の取付ボルト等により着脱自在になっている。つま
り、ケーシング２において前壁部２ａを取外して、砥粒
送出空間３を外部に露出させることにより、砥粒送出空
間３の整備等が容易に行えるようになっており、更に送
出回転体９と駆動軸部材７ａとの間を着脱させることに
より、送出回転体９の取替え等が行えるようになってい
る。As shown in FIG. 1, FIG. 3 and FIG. 5, the delivery rotary member 9 is composed of two disk-shaped side disks 9a, 9a and one central partition plate having a diameter slightly smaller than those of the side disks 9a. The central partition plate 40 is located between the side disks 9a, 9a, and is arranged concentrically and in parallel with each other. Further, the central partition plate 40 and the side disk 9a on the arrow B side
Between the center partition plate 40 and the side disk 9a on the side of the arrow C, the center disks 9b are respectively provided.
And the side disk 9a. The diameter of each central disk 9b is substantially the same as that of the central partition plate 40 (note that in FIG. 5, the feed rotary member 9 is shown with the side disk 9a on the arrow C side omitted). Further, each central disk 9b is a known milling cutter (or a gear or the like may be used). Therefore, a plurality of blade grooves 9e (in the case of a gear, teeth) are formed over the entire outer circumference 9d of the central disk 9b. Groove) has an equal installation pitch S about the rotation center Q2.
It is made of P. Each groove 9e of each central disk 9b is
Abrasive collection which is closed in the directions of arrows B and C by the side disks 9a sandwiching the central disk 9b from both sides and the central partition plate 40, and therefore opened only in the centrifugal direction with respect to the rotation center Q2 of the delivery rotary body 9. The recess 9c is formed. That is, these abrasive grain collecting recesses 9c are configured to be able to collect the beads TR, and these abrasive grain collecting recesses 9c are formed at the same installation pitch SP about the rotation center Q2. It should be noted that a plurality of abrasive grain collecting recesses 9 formed on the outer peripheral portion 9d of the delivery rotating body 9
c is two rows of abrasive grain collecting means 41, 41 formed by these abrasive grain collecting recesses 9c arranged annularly over the outer peripheral portion 9d.
The abrasive grain collecting means 41, 41 are arranged in parallel along the directions of arrows B, C. In addition, these abrasive grain collecting means 41, 41 are
Between 41, the arrangement phase of the abrasive grain collecting recesses 9c is displaced. That is, since the two central disks 9b are arranged so as to be offset from each other by the angle SPP which is ½ of the installation pitch SP, the abrasive particle collecting recess 9c is located at the rotation center Q2 in the entire delivery rotary body 9. It means that they are formed with a pitch of the angle SPP centered on. It should be noted that a plurality of abrasive grain stirring claws 43 are provided near the outer peripheral portion 9d of the outer side disks 9a, 9a of the delivery rotary body 9 in a form protruding in the centrifugal direction with respect to the rotation axis Q1. There is. That is, the plurality of abrasive grain stirring claws 43 are rotated by the rotation of the delivery rotary body 9,
The beads TR around the delivery rotating body 9 can be stirred and stirred by these abrasive grain stirring claws 43. Further, among the casing 2, as shown in FIG.
The front wall portion 2a, which is located closest to the arrow B side and is in contact with the abrasive grain delivery space 3, is detachable from a portion other than the front wall portion 2a of the casing 2 via a bolt or the like not shown, The delivery rotary body 9 and the drive shaft member 7a are also attachable / detachable by a predetermined mounting bolt or the like (not shown). That is, by removing the front wall portion 2a of the casing 2 and exposing the abrasive grain delivery space 3 to the outside, maintenance of the abrasive grain delivery space 3 and the like can be performed easily, and further, the delivery rotary body 9 and By detaching from the drive shaft member 7a, the delivery rotary member 9 can be replaced.

【００１８】一方、ケーシング２には、図１に示すよう
に、砥粒吹出手段５１が設けられている。砥粒吹出手段
５１は、一方の開口端部である砥粒取入口５２をケーシ
ング２内の砥粒回転送出空間４５に開口させる形で、該
ケーシング２に接続された砥粒取出管２５を有してお
り、砥粒取入口５２は前記送出回転体９の天端位置付近
において、従って前記砥粒貯留レベルＴＬよりも上方に
おいて、該送出回転体９の砥粒捕集窪９ｃに対向した形
で配置されている。即ち、砥粒取入口５２は、送出回転
体９の２つの砥粒捕集手段４１、４１の矢印Ｂ、Ｃ方向
における中央位置ＣＡ（本実施例では中央仕切板４０に
対応する位置）に配置されており、これら２つの砥粒捕
集手段４１、４１の各砥粒捕集窪９ｃに略等距離でそれ
ぞれ対向し得るようになっている。砥粒取出管２５の砥
粒取入口５２とは反対側には所定の吹出ノズル２５ａが
設けられており、砥粒取入口５２を介して砥粒取出管２
５に流入した空気及びビーズＴＲは該吹出ノズル２５ａ
を介して外部に吹き出自在になっている。また、砥粒取
出管２５の途中には該砥粒取出管２５内を開閉自在な開
閉バルブ２５ｂが設けられている。On the other hand, the casing 2 is provided with abrasive grain blowing means 51 as shown in FIG. The abrasive grain blow-out means 51 has an abrasive grain take-out pipe 25 connected to the casing 2 in such a manner that the abrasive grain take-in port 52, which is one of the open ends, is opened to the abrasive grain rotary delivery space 45 in the casing 2. Therefore, the abrasive grain inlet 52 is located in the vicinity of the top end position of the delivery rotary body 9, that is, above the abrasive grain storage level TL so as to face the abrasive grain collecting recess 9c of the delivery rotary body 9. It is located in. That is, the abrasive grain inlet 52 is arranged at the central position CA (the position corresponding to the central partition plate 40 in the present embodiment) of the two abrasive grain collecting means 41, 41 of the delivery rotary member 9 in the directions of arrows B and C. Each of these two abrasive grain collecting means 41, 41 can face the abrasive grain collecting recess 9c at substantially equal distances. A predetermined blowing nozzle 25 a is provided on the opposite side of the abrasive grain inlet pipe 25 from the abrasive grain inlet port 52, and the abrasive grain outlet pipe 2 is provided via the abrasive grain inlet port 52.
The air and the beads TR flowing into the nozzle 5 are discharged from the blowout nozzle 25a.
Can be blown out to the outside via. Further, an opening / closing valve 25b which can open and close the inside of the abrasive grain extracting pipe 25 is provided in the middle of the abrasive grain extracting pipe 25.

【００１９】また、ケーシング２には、図２に示すよう
に、砥粒供給手段１１が設けられており、砥粒供給手段
１１は内部に砥粒貯蔵空間１２ａが形成されたホッパタ
ンク１２を、前記ケーシング２（或いは、前記図示しな
い作業場）により、図示しない適宜な支持部材を介して
支持された形で、しかも前記ケーシング２の上方位置に
おいて有している。砥粒貯蔵空間１２ａ内にはビーズＴ
Ｒが貯蔵自在になっており、砥粒貯蔵空間１２ａはホッ
パタンク１２の底部１２ｂに向かって収斂した形状にな
っている。ホッパタンク１２の底部１２ｂには、砥粒貯
蔵空間１２ａに向けて上方に開口した受入口１３ａを形
成する形で砥粒導入穴１３が設けられており、この砥粒
導入穴１３と連続接続する形で砥粒供給管１５が設けら
れている。砥粒供給管１５の下端側は鉛直下方に伸び
て、ケーシング２に接続されている。即ち、砥粒供給管
１５の下端側はケーシング２内の砥粒貯留空間４６に到
達しており、該砥粒供給管１５の下端には、該砥粒貯留
空間４６に下方に開口する排出口１５ａが形成されてい
る。即ち、砥粒貯蔵空間１２ａ内に貯蔵されているビー
ズＴＲは、その自重等により受入口１３ａを介して砥粒
導入穴１３に流入し、該砥粒導入穴１３より砥粒供給管
１５に流入し、排出口１５ａを介して砥粒貯留空間４６
に排出供給され得るようになっている。なお、砥粒供給
管１５の排出口１５ａは前記回転送出体９の回転中心Ｑ
２よりも上方の位置に開口しており、上述した所定の砥
粒貯留レベルＴＬは該排出口１５ａよりもやや下方のレ
ベルとなっている。As shown in FIG. 2, the casing 2 is provided with abrasive grain supply means 11, and the abrasive grain supply means 11 includes a hopper tank 12 in which an abrasive grain storage space 12a is formed. It is supported by the casing 2 (or the work place (not shown) through an appropriate support member (not shown), and is provided at a position above the casing 2. Beads T in the abrasive grain storage space 12a
R is storable, and the abrasive grain storage space 12a has a shape that converges toward the bottom portion 12b of the hopper tank 12. The bottom portion 12b of the hopper tank 12 is provided with an abrasive grain introducing hole 13 in a form of forming a receiving port 13a that opens upward toward the abrasive grain storage space 12a, and is continuously connected to the abrasive grain introducing hole 13. The abrasive grain supply pipe 15 is provided. The lower end side of the abrasive grain supply pipe 15 extends vertically downward and is connected to the casing 2. That is, the lower end side of the abrasive grain supply pipe 15 reaches the abrasive grain storage space 46 in the casing 2, and the lower end of the abrasive grain supply pipe 15 has a discharge port that opens downward in the abrasive grain storage space 46. 15a is formed. That is, the beads TR stored in the abrasive grain storage space 12a flow into the abrasive grain introduction hole 13 through the receiving port 13a due to its own weight or the like, and flow into the abrasive grain supply pipe 15 from the abrasive grain introduction hole 13. Then, the abrasive grain storage space 46 is discharged through the discharge port 15a.
It can be discharged and supplied. The discharge port 15a of the abrasive grain supply pipe 15 has a rotation center Q of the rotation delivery body 9.
It is opened at a position higher than 2, and the above-mentioned predetermined abrasive grain storage level TL is a level slightly lower than the discharge port 15a.

【００２０】一方、前記ホッパタンク１２には、図２に
示すように、略水平な上板部２６が、前記砥粒貯蔵空間
１２ａを上方から封鎖する形で形成されており、この上
板部２６には、該上板部２６を上下方向に貫通する形
の、従ってホッパタンク１２の内外を連通する形の砥粒
投入穴２７が形成されている。上板部２６の上面側のう
ち砥粒投入穴２７の周囲にはゴム部材等からなるＯリン
グ等が設けられることにより封止部２７ａが環状に形成
されており、砥粒投入穴２７には、該砥粒投入穴２７を
閉塞自在な閉塞フタ２９が設けられている。即ち、図２
に示す状態の閉塞フタ２９は、砥粒投入穴２７に対して
該閉塞フタ２９を上板部２６の上面側から載置した形で
装着されて設けられている。また、閉塞フタ２９の下面
側には、前記上板部２６の封止部２７ａと当接係合し得
る形の環状な面からなる封止部２９ａが形成されてお
り、砥粒投入穴２７に装着されている状態の閉塞フタ２
９と上板部２６の間においては、封止部２７ａ、２９ａ
が互いに当接係合している。また、上板部２６には、図
２及び図４に示すように、上方に伸延突出した２つの支
持用ボルト３０、３０が砥粒投入穴２７をはさんで対称
な位置に立設されて設けられており、支持用ボルト３
０、３０にはそれぞれ支持ナット３１、３１が１つづつ
螺嵌されている。支持用ボルト３０、３０にはフタ押圧
板３２が設けられており、フタ押圧板３２には２つのボ
ルト挿入穴３３、３３が形成されている。即ち、図２及
び図４（実線で図示）の状態ではフタ押圧板３２は所定
の押圧位置ＡＴに位置しており、フタ押圧板３２は２つ
のボルト挿入穴３３、３３に各支持用ボルト３０、３０
が挿入した形で、略水平な状態で配置されて設けられて
いる。また、フタ押圧板３２の下面側には下方に突起し
た押圧リブ３２ａが形成されており、フタ押圧板３２は
その上側から、前記支持ナット３１、３１により下方に
締め付け押圧されている。即ち、フタ押圧板３２は、砥
粒投入穴２７に装着された状態の閉塞フタ２９を押圧リ
ブ３２ａを介して押圧した状態になっており、この押圧
した状態では、前記封止部２７ａ、２９ａが互いに所定
の封止力ＨＲで当接係合した状態になっている。また、
フタ押圧板３２には、一方（例えば図２及び図４の紙面
左側）のボルト挿入穴３３と連続する形でフタ押圧板３
２の側方に開口したボルト溝３５が設けられており、従
って押圧位置ＡＴに位置したフタ押圧板３２を、図４の
二点鎖線に示すように、他方（例えば図２及び図４の紙
面右側）のボルト挿入穴３３において挿入した支持用ボ
ルト３０を中心に図４の矢印Ｄ方向に回動させ得るよう
になっている。つまりフタ押圧板３２の回動と共に、一
方（例えば図２及び図４の紙面左側）のボルト挿入穴３
３において挿入した支持用ボルト３０がボルト溝３５を
通過してフタ押圧板３２から解除し得るようになってい
る。なお、フタ押圧板３２が一方（例えば図２及び図４
の紙面左側）のボルト挿入穴３３において挿入した支持
用ボルト３０から解除され、フタ押圧板３２が、砥粒投
入穴２７に装着された状態の前記閉塞フタ２９を押圧し
ない状態、即ち解除の状態の位置を解除位置ＫＪとす
る。また、解除位置ＫＪに位置したフタ押圧板３２を、
他方（例えば図２及び図４の紙面右側）のボルト挿入穴
３３において挿入した支持用ボルト３０を中心に、図の
矢印Ｄ方向とは反対方向の矢印Ｅ方向に回動させて再び
閉塞フタ２９を押圧する押圧位置ＡＴに配置することも
できる（なお、押圧位置ＡＴと解除位置ＫＪとの間にお
けるフタ押圧板３２の回動時には、この回動動作を極力
スムーズに行うため、例えば前記支持ナット３１、３１
をゆるめ、フタ押圧板３２と閉塞フタ２９との間での押
圧が極力生じないようにする。）。また、フタ押圧板３
２には、他方（例えば紙面右側）のボルト挿入穴３３と
連続する形でフタ押圧板３２の側方に開口したボルト溝
３６が設けられており、従って解除位置ＫＪに位置し、
従って一方（例えば紙面左側）のボルト挿入穴３３にお
いて挿入した支持用ボルト３０が解除された状態のフタ
押圧板３２を、ボルト溝３６側の支持用ボルト３０を前
記ボルト溝３６を通過させる形で、該支持用ボルト３０
から着脱自在になっている。On the other hand, in the hopper tank 12, as shown in FIG. 2, a substantially horizontal upper plate portion 26 is formed so as to close the abrasive grain storage space 12a from above, and the upper plate portion 26 is formed. An abrasive grain introduction hole 27 is formed in the upper surface of the upper plate portion 26 in the vertical direction, that is, in the form of connecting the inside and outside of the hopper tank 12. An O-ring or the like made of a rubber member or the like is provided around the abrasive grain introducing hole 27 on the upper surface side of the upper plate portion 26 to form an annular sealing portion 27a. A closing lid 29 that can close the abrasive grain introducing hole 27 is provided. That is, FIG.
The closing lid 29 in the state shown in (3) is provided by being mounted in the abrasive grain introducing hole 27 such that the closing lid 29 is placed from the upper surface side of the upper plate portion 26. Further, on the lower surface side of the closing lid 29, there is formed a sealing portion 29a formed of an annular surface capable of abuttingly engaging with the sealing portion 27a of the upper plate portion 26. Closure lid 2 attached to the
9 and the upper plate portion 26, sealing portions 27a, 29a
Are in abutting engagement with each other. As shown in FIGS. 2 and 4, the upper plate portion 26 is provided with two supporting bolts 30, 30 extending upward and projecting at symmetrical positions with the abrasive grain introducing hole 27 interposed therebetween. Provided and support bolt 3
Support nuts 31 and 31 are screwed into the 0 and 30, respectively. The support bolts 30, 30 are provided with a lid pressing plate 32, and the lid pressing plate 32 is provided with two bolt insertion holes 33, 33. That is, in the state shown in FIGS. 2 and 4 (shown by the solid line), the lid pressing plate 32 is located at a predetermined pressing position AT, and the lid pressing plate 32 has two bolt insertion holes 33, 33 in which the supporting bolts 30 are provided. , 30
Is inserted and is arranged in a substantially horizontal state. Further, a pressing rib 32a protruding downward is formed on the lower surface side of the lid pressing plate 32, and the lid pressing plate 32 is tightened and pressed downward by the support nuts 31, 31 from the upper side thereof. That is, the lid pressing plate 32 is in a state of pressing the closing lid 29 mounted in the abrasive grain introducing hole 27 via the pressing rib 32a, and in this pressed state, the sealing portions 27a, 29a. Are in contact with each other with a predetermined sealing force HR. Also,
The lid pressing plate 32 is formed on the lid pressing plate 3 so as to be continuous with one (for example, the left side of the paper surface of FIGS. 2 and 4) bolt insertion hole 33.
2 is provided with a bolt groove 35 that is open to the side, and therefore the lid pressing plate 32 located at the pressing position AT is replaced by the other (for example, the paper surface of FIGS. 2 and 4) as shown by the chain double-dashed line in FIG. The supporting bolt 30 inserted in the (right side) bolt insertion hole 33 can be rotated in the direction of arrow D in FIG. That is, as the lid pressing plate 32 rotates, one of the bolt insertion holes 3 (for example, the left side of the paper surface of FIGS. 2 and 4)
The supporting bolt 30 inserted in 3 passes through the bolt groove 35 and can be released from the lid pressing plate 32. It should be noted that one of the lid pressing plates 32 (for example, FIGS.
State (the left side of the paper of FIG. 2), which is released from the support bolts 30 inserted in the bolt insertion holes 33, and the lid pressing plate 32 does not press the closing lid 29 attached to the abrasive grain introducing hole 27, that is, the released state. The position of is the release position KJ. In addition, the lid pressing plate 32 located at the release position KJ is
The support bolt 30 inserted in the other bolt insertion hole 33 (for example, on the right side of the paper surface of FIGS. 2 and 4) is rotated in the arrow E direction opposite to the arrow D direction in the drawing to reclose the closing lid 29. It is also possible to arrange it at a pressing position AT for pressing (when the lid pressing plate 32 is rotated between the pressing position AT and the releasing position KJ, in order to perform this rotating operation as smoothly as possible, for example, the support nut 31, 31
To prevent the pressing between the lid pressing plate 32 and the closing lid 29 as much as possible. ). Also, the lid pressing plate 3
2 is provided with a bolt groove 36 that is open to the side of the lid pressing plate 32 so as to be continuous with the other bolt insertion hole 33 (for example, on the right side of the drawing), and therefore is located at the release position KJ.
Therefore, the lid pressing plate 32 in the state where the supporting bolt 30 inserted in the bolt insertion hole 33 on one side (for example, the left side of the drawing) is released, the supporting bolt 30 on the bolt groove 36 side is passed through the bolt groove 36. , The supporting bolt 30
It is removable from.

【００２１】また、ホッパタンク１２内には、図２及び
図７に示すように、底部１２ｂに絞り部材６５が載置さ
れ配設されている。絞り部材６５は、上下に一体的に接
続された上部６５ａ及び下部６５ｂを有しており、上部
６５ａは、その断面積が上方に向けて小さくなった円錐
形状であり、下部６５ｂは、その断面積が下方に向けて
小さくなった逆円錐形状である。従って、下部６５ｂの
周囲には、逆円錐形状に形成された傾斜した側面である
絞り面６６が形成されている。この絞り部材６５は、下
部６５ｂが前記受入口１３ａに下方に挿嵌された形で配
置されている。即ち、下部６５ｂの絞り面６６が、図７
及び図８に示すように、受入口１３ａに対向しており、
絞り部材６５は、下部６５ｂの絞り面６６が受入口１３
ａの周囲に当接した形で底部１２ｂに載置されている。
なお、受入口１３ａの形状はやや長円形に形成されてお
り、下部６５ｂの断面は半径が一定の円形に形成されて
いる。つまり、絞り面６６と受入口１３ａの周囲との間
の当接状態は点当接となっており（図８では２点で当
接）、従って絞り面６６と受入口１３ａとの間にはビー
ズＴＲ等が通過し得る間隙７０が、絞り面６６に沿って
略円環状に形成されている。一方、絞り部材６５の上部
６５ａには、図２に示すように、棒部材６７が上方に伸
延した形で接合され設けられており、棒部材６７の上部
には水平な板状の平板部６７ａが設けられている。とこ
ろで、上述したように上板部２６の砥粒投入穴２７に
は、閉塞フタ２９が装着されているが、閉塞フタ２９は
砥粒投入穴２７の下端までは到達しておらず、よって砥
粒投入穴２７のうち下側の部位は中空状態になってい
る。前記棒部材６７の上部及び平板部６７ａは、この砥
粒投入穴２７に下側から挿入した状態になっており、従
って、棒部材６７及び平板部６７ａは、該砥粒投入穴２
７により、横方向にあまり移動しないようにガイドされ
ている。更に、絞り部材６５の下部６５ｂの下端には、
上下に伸延した円柱状の突起部材６８が下方に伸延した
形で接合され設けられており、該突起部材６８は砥粒導
入穴１３を介して砥粒供給管１５に至る形で配置されて
いる。Further, in the hopper tank 12, as shown in FIGS. 2 and 7, a diaphragm member 65 is placed and arranged on the bottom portion 12b. The diaphragm member 65 has an upper part 65a and a lower part 65b that are integrally connected to each other in the vertical direction. The upper part 65a has a conical shape with its cross-sectional area becoming smaller toward the upper side, and the lower part 65b has its disconnection. It has an inverted conical shape with the area decreasing downward. Therefore, a diaphragm surface 66, which is an inclined side surface formed in an inverted conical shape, is formed around the lower portion 65b. The diaphragm member 65 is arranged such that the lower portion 65b is inserted into the receiving opening 13a downward. That is, the diaphragm surface 66 of the lower portion 65b is shown in FIG.
And, as shown in FIG. 8, faces the inlet 13a,
In the diaphragm member 65, the diaphragm surface 66 of the lower portion 65b has the receiving port 13
It is placed on the bottom portion 12b so as to be in contact with the periphery of a.
The shape of the receiving port 13a is slightly oval, and the cross section of the lower portion 65b is circular with a constant radius. That is, the contact state between the diaphragm surface 66 and the periphery of the receiving port 13a is point contact (contact at two points in FIG. 8), and therefore, there is between the diaphragm surface 66 and the receiving port 13a. A gap 70 through which the beads TR and the like can pass is formed in a substantially annular shape along the diaphragm surface 66. On the other hand, as shown in FIG. 2, a rod member 67 is joined to the upper portion 65a of the diaphragm member 65 in a manner of extending upward, and a horizontal plate-shaped flat plate portion 67a is provided above the rod member 67. Is provided. By the way, as described above, the closing lid 29 is attached to the abrasive grain introducing hole 27 of the upper plate portion 26, but the closing lid 29 does not reach the lower end of the abrasive grain introducing hole 27. The lower part of the grain charging hole 27 is hollow. The upper portion of the rod member 67 and the flat plate portion 67a are in a state of being inserted into the abrasive grain introducing hole 27 from the lower side. Therefore, the rod member 67 and the flat plate portion 67a are in the abrasive grain introducing hole 2 respectively.
It is guided by 7 so as not to move much in the lateral direction. Furthermore, at the lower end of the lower portion 65b of the diaphragm member 65,
A columnar protruding member 68 extending vertically is provided so as to be joined in a downwardly extending form, and the protruding member 68 is arranged so as to reach the abrasive grain supply pipe 15 through the abrasive grain introducing hole 13. .

【００２２】一方、前記ケーシング２には、図３に示す
ように、所定の加圧ポンプ１９により加圧された空気を
輸送し得る空気輸送管２０が、輸送した空気を駆動装置
収納空間５に供給自在な形で設けられており、前記ケー
シング２には、駆動装置収納空間５内の空気を外部に輸
送し得る空気取出管２１が設けられている。また、空気
取出管２１の先端側は、図１に示すように、第一供給管
２２、第二供給管２３の２股に分岐しており、第一供給
管２２は輸送した気体を砥粒送出空間３に供給自在な形
でケーシング２に接続され、第二供給管２３は輸送した
気体を砥粒貯蔵空間１２ａに供給自在な形でホッパタン
ク１２に接続されている。即ち、第一供給管２２の先端
には、図１及び図６に示すように、ケーシング２内の砥
粒送出空間３に配置された放出部２２ａが形成されてお
り、放出部２２ａは砥粒送出空間３上部、即ち前記砥粒
貯留レベルＴＬより上方に配置された箱体２２ｂを有し
ている。箱体２２ｂは外形が例えば円柱状であり、その
内部は中空な緩衝室２２ｃとなっている。この緩衝室２
２ｃの内径は、該放出部２２ａに至るまでの第一供給管
２２の内径に比べて大きくなっている。また、箱体２２
ｂの側部２２ｅには、該側部２２ｅを水平方向に貫通す
る形で、従って砥粒送出空間３と緩衝室２２ｃとを連通
する形で水平方向に伸延した筋状のスリット２２ｄが水
平方向、従って横方向に開口した形で設けられている。
なお、スリット２２ｄの開口面積は、前記放出部２２ａ
に至るまでの第一供給管２２の内部の断面積に比べて大
きくなっている。つまり、第一供給管２２から供給され
てくる空気は緩衝室２２ｃにおいて圧力を一旦低下させ
てから、スリット２２ｄを介して砥粒送出空間３に供給
されるようになっている。On the other hand, in the casing 2, as shown in FIG. 3, an air transport pipe 20 capable of transporting the air pressurized by a predetermined pressurizing pump 19 is provided with the transported air to the drive device accommodating space 5. The casing 2 is provided so as to be freely supplied, and the casing 2 is provided with an air extraction pipe 21 capable of transporting the air in the drive device housing space 5 to the outside. Further, as shown in FIG. 1, the tip end side of the air extraction pipe 21 is branched into two branches of a first supply pipe 22 and a second supply pipe 23, and the first supply pipe 22 uses the transported gas as abrasive grains. It is connected to the casing 2 so as to be able to supply it to the delivery space 3, and the second supply pipe 23 is connected to the hopper tank 12 so as to be able to supply the transported gas to the abrasive grain storage space 12a. That is, at the tip of the first supply pipe 22, as shown in FIGS. 1 and 6, a discharge part 22a arranged in the abrasive grain delivery space 3 in the casing 2 is formed, and the discharge part 22a is made of abrasive grains. It has a box 22b arranged above the delivery space 3, that is, above the abrasive grain storage level TL. The outer shape of the box body 22b is, for example, a cylindrical shape, and the inside thereof is a hollow buffer chamber 22c. This buffer chamber 2
The inner diameter of 2c is larger than the inner diameter of the first supply pipe 22 up to the discharge part 22a. Also, the box 22
On the side portion 22e of b, a linear slit 22d extending horizontally is formed so as to penetrate the side portion 22e in the horizontal direction, and thus communicate the abrasive grain delivery space 3 and the buffer chamber 22c. Therefore, it is provided in a laterally open form.
The opening area of the slit 22d is the same as that of the emission portion 22a.
It is larger than the cross-sectional area of the inside of the first supply pipe 22 up to. That is, the air supplied from the first supply pipe 22 is once supplied to the abrasive grain delivery space 3 via the slit 22d after the pressure is once lowered in the buffer chamber 22c.

【００２３】一方、加圧ポンプ１９と空気輸送管２０
は、図３に示すように、駆動装置収納空間５に加圧した
空気を供給自在な収納空間加圧手段５５となっており、
加圧ポンプ１９と空気輸送管２０と駆動装置収納空間５
と空気取出管２１と第一供給管２２は、図１及び図３に
示すように、砥粒送出空間３に加圧した空気を供給自在
な送出空間加圧手段５０となっており、加圧ポンプ１９
と空気輸送管２０と駆動装置収納空間５と空気取出管２
１と第二供給管２３は、図１乃至図３に示すように、砥
粒貯蔵空間１２ａに加圧した空気を供給自在なホッパ加
圧手段５３となっている。従って、収納空間加圧手段５
５と送出空間加圧手段５０とホッパ加圧手段５３との間
では加圧ポンプ１９と空気輸送管２０が共有されてお
り、更に送出空間加圧手段５０とホッパ加圧手段５３と
の間では駆動装置収納空間５と空気取出管２１が共有さ
れている。また、ホッパタンク１２の上板部２６には、
図２に示すように、該上板部２６を上下に貫通した形で
排気管３７が設けられており、排気管３７のうち砥粒貯
蔵空間１２ａ側には空気取入部３７ａが設けられてい
る。空気取入部３７ａはフィルタ状に形成されており、
従って空気取入部３７ａを介して砥粒貯蔵空間１２ａか
ら排気管３７の内部に空気は流入するが、ビーズＴＲは
流入できないようになっている。排気管３７のうちホッ
パタンク１２の外部には大気中に開口した排気口３７ｂ
が設けられており、排気管３７の途中には該排気管３７
の内部を開閉自在な排気バルブ３７ｃが設けられてい
る。On the other hand, the pressure pump 19 and the air transport pipe 20.
3, as shown in FIG. 3, is a storage space pressurizing means 55 capable of supplying pressurized air to the drive device storage space 5,
Pressurizing pump 19, air transport pipe 20, drive device storage space 5
As shown in FIG. 1 and FIG. 3, the air extraction pipe 21 and the first supply pipe 22 serve as a delivery space pressurizing means 50 capable of supplying the pressurized air to the abrasive grain delivery space 3 and pressurizing the abrasive space. Pump 19
, Air transport pipe 20, drive device storage space 5, and air extraction pipe 2
As shown in FIGS. 1 to 3, the first and second supply pipes 23 are hopper pressurizing means 53 which can freely supply the air pressurized to the abrasive grain storage space 12a. Therefore, the storage space pressurizing means 5
5, the delivery space pressurizing means 50 and the hopper pressurizing means 53 share the pressurizing pump 19 and the air transport pipe 20, and the delivery space pressurizing means 50 and the hopper pressurizing means 53 further share the same. The drive device storage space 5 and the air extraction pipe 21 are shared. In addition, on the upper plate portion 26 of the hopper tank 12,
As shown in FIG. 2, an exhaust pipe 37 is provided so as to vertically penetrate the upper plate portion 26, and an air intake portion 37a is provided on the abrasive grain storage space 12a side of the exhaust pipe 37. . The air intake portion 37a is formed in a filter shape,
Therefore, air can flow from the abrasive grain storage space 12a into the exhaust pipe 37 through the air intake portion 37a, but the beads TR cannot flow in. Out of the exhaust pipe 37, outside the hopper tank 12, an exhaust port 37b opened to the atmosphere
Is provided in the middle of the exhaust pipe 37.
An exhaust valve 37c that can open and close the inside of the is provided.

【００２４】ブラスト加工機１は以上のように構成され
ているので、金属などのブラスト加工を行うために、該
ブラスト加工機１によるビーズＴＲの吹き出しをおこな
うと以下のようになる。即ちまず、ホッパタンク１２に
おいて前記支持ナット３１、３１をゆるめると共に、図
４の二点鎖線に示すように、前記フタ押圧板３２を押圧
位置ＡＴから解除位置ＫＪに回動移動させ、砥粒投入穴
２７から閉塞フタ２９を取外す。次いで、該砥粒投入穴
２７を介してガラスビーズ又は粉末状の微細砥粒等であ
るビーズＴＲを砥粒貯蔵空間１２ａに投入する。投入
後、再び閉塞フタ２９を砥粒投入穴２７に装着し、フタ
押圧板３２を解除位置ＫＪから押圧位置ＡＴに回動移動
させ、支持ナット３１、３１を締め付けてフタ押圧板３
２を下方に押圧する。即ち、フタ押圧板３２は、砥粒投
入穴２７に装着された状態の閉塞フタ２９を押圧リブ３
２ａを介して押圧し、この押圧により封止部２７ａ、２
９ａが互いに所定の封止力ＨＲで当接係合され、従って
閉塞フタ２９により砥粒投入穴２７が気密に閉塞され
た。Since the blasting machine 1 is constructed as described above, when the beads TR are blown out by the blasting machine 1 in order to blast a metal or the like, it becomes as follows. That is, first, while loosening the support nuts 31, 31 in the hopper tank 12, the lid pressing plate 32 is pivotally moved from the pressing position AT to the releasing position KJ as shown by the chain double-dashed line in FIG. Remove the closure lid 29 from 27. Next, the beads TR, which are glass beads or fine abrasive grains in powder form, are introduced into the abrasive grain storage space 12a through the abrasive grain introducing hole 27. After the insertion, the closing lid 29 is attached to the abrasive grain introducing hole 27 again, the lid pressing plate 32 is pivotally moved from the release position KJ to the pressing position AT, and the support nuts 31, 31 are tightened to close the lid pressing plate 3.
Press 2 downwards. That is, the lid pressing plate 32 presses the closing lid 29, which is mounted in the abrasive grain introducing hole 27, into the pressing rib 3.
2a, and the sealing portions 27a, 2
9a are abutted and engaged with each other with a predetermined sealing force HR, and therefore the abrasive lid 29 is airtightly closed by the closing lid 29.

【００２５】次いで、加圧ポンプ１９の運転を開始す
る。即ち、加圧ポンプ１９によって加圧された空気は空
気輸送管２０を介して駆動装置収納空間５に供給され、
該駆動装置収納空間５に供給された空気は更に、空気取
出管２１と第一供給管２２を介して砥粒送出空間３に供
給され、または空気取出管２１と第二供給管２２を介し
て砥粒貯蔵空間１２ａに供給される。従って、駆動装置
収納空間５、砥粒送出空間３、砥粒貯蔵空間１２ａはそ
れぞれ略等しい気圧で加圧される。但し、ホッパタンク
１２の排気管３７における排気バルブ３７ｃ及び、砥粒
吹出手段５１における開閉バルブ２５ｂは閉塞状態にな
っている。一方、砥粒貯蔵空間１２ａに投入されたビー
ズＴＲは、殆ど砥粒貯蔵空間１２ａに貯蔵された状態に
なるが、特に砥粒貯蔵空間１２ａの底部１２ｂ付近に位
置したビーズＴＲは、その自重等（上述したように砥粒
貯蔵空間１２ａと砥粒送出空間３との間の気圧差は殆ど
ないから）により、絞り部材６５の周囲に至り、絞り面
６６と受入口１３ａとの間の間隙７０を介して砥粒導入
穴１３に流入し、該砥粒導入穴１３より砥粒供給管１５
に流入する。砥粒供給管１５に流入したビーズＴＲは排
出口１５ａを介して砥粒送出空間３の砥粒貯留空間４６
に排出供給され貯留される。続けて砥粒貯留空間４６に
ビーズＴＲが供給貯留され、該砥粒貯留空間４６に貯留
されたビーズＴＲは、その側方である砥粒回転送出空間
４５にも流動する。なお、ビーズＴＲが間隙７０を介し
て砥粒導入穴１３に流入する際には、絞り面６６が逆円
錐状となっているため、ビーズＴＲが該絞り面６６に付
着して停滞するようなことは防止されている。つまり間
隙７０付近、従って受入口１３ａ付近でビーズＴＲがブ
リッジを作る形で停滞し詰まるようなことは極力防止さ
れている。また、上述したように間隙７０は略環状に形
成されている。ビーズＴＲ等の粉体が点状の穴などに流
入する場合に、該穴などの周囲にできるブリッジと、環
状の穴などに流入する場合に、該環状の穴などの周囲に
できるブリッジとを比較すると、環状の穴などの周囲に
できるブリッジのほうが、そのバランスを保ちにくく、
従ってその形成が困難であることが知られている。つま
り、上述したように間隙７０が略環状に形成されている
ので、該間隙７０の周囲にブリッジが極力形成されにく
くなっている。更に、受入口１３ａが絞り部材６５によ
り絞られていることにより、例えば受入口１３ａからビ
ーズＴＲが塊となって砥粒導入穴１３等に流入し、砥粒
送出空間３に塊となったビーズＴＲが、急激に、かつ不
用意に多量に供給されてしまうようなことが防止されて
いるので都合がよい。また、間隙７０を通過して砥粒導
入穴１３等に流入したビーズＴＲは、砥粒導入穴１３等
において、突起部材６８の周囲を該突起部材６８に沿っ
てまっすぐ下方に流動する。つまりビーズＴＲは、該突
起部材６８によって整流されることになるので、砥粒導
入穴１３や砥粒供給管１５等において詰まったりせず、
ビーズＴＲのスムーズな供給が実現する。更に、絞り部
材６５の上部６５ａが円錐状に形成されているため、砥
粒貯蔵空間１２ａに貯蔵されているビーズＴＲにより絞
り部材６５が受ける圧力は極力側方に分散され、該絞り
部材６５に不用意な下方応力が作用しないようになって
いる。なお、駆動装置収納空間５の加圧された空気が、
上述したように空気取出管２１及び第一供給管２２を介
して砥粒送出空間３に供給されるのであるから、駆動装
置収納空間５内の気圧は砥粒送出空間３内の気圧よりも
やや高くなる。即ち、砥粒送出空間３内のビーズＴＲが
仕切部材６と駆動軸部材７ａとの間の隙間等を介して駆
動装置収納空間５側に進入しようとすることが、これら
収砥粒送出空間３と駆動装置収納空間５との間の差圧に
よって防止されている。つまり、駆動軸部材７ａ等を摩
耗破損させることが極力防止されているので都合がよ
い。Next, the operation of the pressure pump 19 is started. That is, the air pressurized by the pressure pump 19 is supplied to the drive device storage space 5 through the air transport pipe 20,
The air supplied to the drive device housing space 5 is further supplied to the abrasive grain delivery space 3 via the air extraction pipe 21 and the first supply pipe 22, or via the air extraction pipe 21 and the second supply pipe 22. It is supplied to the abrasive grain storage space 12a. Therefore, the drive device housing space 5, the abrasive grain delivery space 3, and the abrasive grain storage space 12a are pressurized at substantially the same atmospheric pressure. However, the exhaust valve 37c in the exhaust pipe 37 of the hopper tank 12 and the opening / closing valve 25b in the abrasive grain blowing means 51 are closed. On the other hand, most of the beads TR put in the abrasive grain storage space 12a are in a state of being stored in the abrasive grain storage space 12a, but especially the beads TR located near the bottom 12b of the abrasive grain storage space 12a have their own weight, etc. (Because there is almost no atmospheric pressure difference between the abrasive grain storage space 12a and the abrasive grain delivery space 3 as described above), it reaches the periphery of the diaphragm member 65 and the gap 70 between the diaphragm surface 66 and the receiving port 13a. Flow into the abrasive grain introduction hole 13 through the abrasive grain introduction hole 13 and the abrasive grain supply pipe 15
Flows into. The beads TR that have flowed into the abrasive grain supply pipe 15 are supplied to the abrasive grain storage space 46 of the abrasive grain delivery space 3 via the outlet 15a.
Is discharged and supplied to and stored in. Subsequently, the beads TR are supplied and stored in the abrasive grain storage space 46, and the beads TR stored in the abrasive grain storage space 46 also flow into the abrasive grain rotation delivery space 45 on the side thereof. When the beads TR flow into the abrasive grain introducing hole 13 through the gap 70, the bead TR adheres to the aperture surface 66 and becomes stagnant because the aperture surface 66 has an inverted conical shape. Things have been prevented. That is, it is prevented as much as possible that the beads TR stagnate and become clogged in the form of a bridge near the gap 70, that is, near the receiving port 13a. Further, as described above, the gap 70 is formed in a substantially annular shape. When powder such as beads TR flows into a dot-shaped hole or the like, a bridge formed around the hole or the like and a bridge formed around the ring-shaped hole or the like when flowing into the hole or the like are provided. By comparison, a bridge formed around a circular hole is more difficult to maintain its balance,
Therefore, it is known that its formation is difficult. That is, since the gap 70 is formed in a substantially annular shape as described above, it is difficult to form bridges around the gap 70 as much as possible. Further, since the receiving port 13a is narrowed by the throttle member 65, for example, the beads TR are lumped from the receiving port 13a and flow into the abrasive grain introducing hole 13 and the like, and the beads are lumped in the abrasive grain delivery space 3. It is convenient because TR is prevented from being suddenly and inadvertently supplied in a large amount. The beads TR that have passed through the gap 70 and flowed into the abrasive grain introducing hole 13 or the like flow straightly downward along the projecting member 68 around the projecting member 68 in the abrasive grain introducing hole 13 or the like. That is, since the beads TR are rectified by the protrusion member 68, the beads TR are not clogged in the abrasive grain introducing hole 13, the abrasive grain supply pipe 15 or the like,
Smooth supply of beads TR is realized. Further, since the upper portion 65a of the throttle member 65 is formed in a conical shape, the pressure applied to the throttle member 65 by the beads TR stored in the abrasive grain storage space 12a is dispersed to the side as much as possible, so that It is designed so that inadvertent downward stress does not act. The pressurized air in the drive device storage space 5
Since it is supplied to the abrasive grain delivery space 3 via the air extraction pipe 21 and the first supply pipe 22 as described above, the atmospheric pressure in the drive device storage space 5 is slightly higher than the atmospheric pressure in the abrasive grain delivery space 3. Get higher That is, when the beads TR in the abrasive grain delivery space 3 try to enter the drive device storage space 5 side through the gap between the partition member 6 and the drive shaft member 7a, etc. This is prevented by the differential pressure between the drive device storage space 5 and the drive device storage space 5. That is, it is convenient to prevent the drive shaft member 7a and the like from being worn and damaged.

【００２６】次いで、回転駆動手段７においてモータユ
ニット７ｂの運転を開始し、従って駆動軸部材７ａを回
転軸Ｑ１を中心に図の矢印Ａ方向に回転駆動させ、また
該駆動軸部材７ａを介して送出回転体９を図の矢印Ａ方
向に回転駆動させる。砥粒回転送出空間４５には上述し
たように砥粒貯留レベルＴＬまでビーズＴＲが貯留され
ているので、送出回転体９のうち特に下部側は貯留した
ビーズＴＲの中に埋没している。よって送出回転体９が
砥粒送出空間３内で回転することにより、該送出回転体
９の下側は貯留したビーズＴＲの中で回転する。貯留し
たビーズＴＲの中で回転することにより、送出回転体９
の各砥粒捕集窪９ｃは貯留したビーズＴＲを掻き取る形
でビーズＴＲを捕集する。一方、モータユニット７ｂの
運転を開始した後、砥粒吹出手段５１の吹出ノズル２５
ａを金属などブラスト加工を行う対象に対して向けてお
き、砥粒吹出手段５１の開閉バルブ２５ｂを開放する。
開放により吹出ノズル２５ａ及び砥粒取出管２５を介し
て大気中と、大気圧よりも高圧の砥粒送出空間３が連通
する。従って、砥粒送出空間３の砥粒回転送出空間４５
から吹出ノズル２５ａ及び砥粒取出管２５を介して大気
中に空気が流動するので、砥粒取出管２５の砥粒取入口
５２近傍には、図５に示すように、砥粒回転送出空間４
５から砥粒取入口５２を介して砥粒取出管２５に流入す
る空気流ＫＲが発生する。ところで、送出回転体９で
は、上述したようにビーズＴＲを捕集した各砥粒捕集窪
９ｃが上方の砥粒取入口５２に対応した位置に順次到達
している。よって、該位置に順次移動させられた各砥粒
捕集窪９ｃでは、該砥粒捕集窪９ｃに捕集されていたビ
ーズＴＲが空気流ＫＲに乗って該砥粒捕集窪９ｃから飛
び出し、砥粒取入口５２を介して砥粒取出管２５に流入
する。空気と共に砥粒取出管２５に流入したビーズＴＲ
は、該砥粒取出管２５及び吹出ノズル２５ａを介して空
気と共に外部に吹き出され、よってブラスト加工が行わ
れる。従って、砥粒吹出手段５１には、送出回転体９が
前記設置ピッチＳＰの２分の１である角度ＳＰＰ分だけ
回転する毎に、即ち等しい時間間隔で、各砥粒捕集窪９
ｃに捕集されていた量、即ち略一定量のビーズＴＲが流
入するので、砥粒吹出手段５１に流入するビーズＴＲの
密度は極力一定に保たれる。即ち、砥粒吹出手段５１を
介したビーズＴＲの吹き出しは、吹き出し密度のムラが
極力無くされ、極力均一な吹き出し密度を保持する形で
行われる。Then, the rotation driving means 7 starts the operation of the motor unit 7b, and accordingly, the drive shaft member 7a is driven to rotate about the rotation shaft Q1 in the direction of the arrow A in the figure, and also via the drive shaft member 7a. The delivery rotating body 9 is rotationally driven in the direction of arrow A in the figure. Since the beads TR are stored in the abrasive grain rotation delivery space 45 up to the abrasive grain storage level TL as described above, particularly the lower side of the delivery rotor 9 is buried in the stored beads TR. Therefore, when the delivery rotating body 9 rotates in the abrasive grain delivery space 3, the lower side of the delivery rotating body 9 rotates in the stored beads TR. By rotating in the stored beads TR, the delivery rotating body 9
Each of the abrasive grain collecting recesses 9c collects the beads TR by scraping the stored beads TR. On the other hand, after the operation of the motor unit 7b is started, the blowing nozzle 25 of the abrasive grain blowing means 51 is
A is directed toward the object to be blasted such as metal, and the opening / closing valve 25b of the abrasive grain blowing means 51 is opened.
When opened, the atmosphere is communicated with the atmosphere through the blow-out nozzle 25a and the abrasive grain take-out pipe 25, and the abrasive grain delivery space 3 has a pressure higher than atmospheric pressure. Therefore, the abrasive grain rotation delivery space 45 of the abrasive grain delivery space 3
Since air flows into the atmosphere from the blow-out nozzle 25a and the abrasive grain take-out pipe 25 into the atmosphere, the abrasive grain rotary feed space 4 is provided near the abrasive grain take-in port 52 of the abrasive grain take-out pipe 25 as shown in FIG.
An air flow KR flowing from 5 into the abrasive grain extraction pipe 25 through the abrasive grain inlet 52 is generated. By the way, in the delivery rotating body 9, each of the abrasive grain collecting recesses 9c in which the beads TR are collected as described above sequentially reaches the position corresponding to the upper abrasive grain inlet 52. Therefore, in each of the abrasive grain collecting depressions 9c sequentially moved to the position, the beads TR collected in the abrasive grain collecting depressions 9c ride on the air flow KR and jump out from the abrasive grain collecting depressions 9c. , Through the abrasive grain inlet 52 into the abrasive grain take-out pipe 25. Beads TR that flowed into the abrasive grain extraction tube 25 together with air
Is blown out to the outside together with air through the abrasive grain take-out pipe 25 and the blow-out nozzle 25a, so that blasting is performed. Therefore, in the abrasive grain blowing means 51, each of the abrasive grain collecting depressions 9 is rotated every time the delivery rotating body 9 rotates by an angle SPP which is one half of the installation pitch SP, that is, at equal time intervals.
Since the amount of the beads TR collected in c, that is, a substantially constant amount of the beads TR flows in, the density of the beads TR flowing into the abrasive grain blowing means 51 is kept as constant as possible. That is, the beads TR are blown out through the abrasive grain blowing means 51 in such a manner that the unevenness of the blowout density is eliminated as much as possible and the blowout density is kept as uniform as possible.

【００２７】なお上述した実施例では、受入口絞り部材
である絞り部材６５の絞り面６６は逆円錐形に形成され
ていたが、絞り面は逆錐形に形成されていればよく、従
って逆円錐形以外にも、例えば逆四角錐形や逆三角錐形
に形成されていてもよい。Although the diaphragm surface 66 of the diaphragm member 65, which is the inlet diaphragm member, is formed in an inverted conical shape in the above-described embodiment, the diaphragm surface may be formed in an inverted cone shape, and therefore the inverted surface is formed. Other than the conical shape, the shape may be, for example, an inverted quadrangular pyramid or an inverted triangular pyramid.

【００２８】また上述した実施例では、受入口絞り部材
である絞り部材６５の断面（半径が一定な円）と、砥粒
受入口である受入口１３ａの形状（長円）とを整合しな
いようにして、絞り面６６と受入口１３ａの間に砥粒通
過間隙である間隙７０を形成するようにしたが、砥粒通
過間隙の形成態様はこれに限定されない。例えば、図９
に示すように、逆錐形の絞り面６６と受入口１３ａの間
に予めビーズＴＲの流動であるビーズ流ＢＲを形成して
おき、絞り面６６が、このビーズ流ＢＲの圧力を受ける
ようにしておく。つまり、絞り面６６が圧力を受けるこ
とにより絞り部材６５が上方への押圧力Ｆ１を受け、絞
り部材６５は、該押圧力Ｆ１により受入口１３ａに対し
て、絞り部材６５がホッパタンク１２の底部１２ｂに当
接しない程度にやや上方に浮くようになる。このように
受入口１３ａに対してやや上方に浮いた絞り部材６５
と、受入口１３ａの間には間隙７０が形成される。Further, in the above-described embodiment, the cross section (circle having a constant radius) of the throttle member 65 which is the inlet throttle member and the shape (oval) of the abrasive inlet 13a which is the abrasive grain inlet are not matched. Although the gap 70, which is an abrasive grain passage gap, is formed between the throttle surface 66 and the receiving port 13a, the manner of forming the abrasive grain passage gap is not limited to this. For example, in FIG.
As shown in FIG. 5, a bead flow BR, which is a flow of the beads TR, is previously formed between the inverted conical constricting surface 66 and the receiving port 13a so that the constricting surface 66 receives the pressure of this bead flow BR. Keep it. That is, when the throttle surface 66 receives the pressure, the throttle member 65 receives the upward pressing force F1, and the throttle member 65 receives the pressing force F1 from the receiving port 13a and the throttle member 65 moves to the bottom 12b of the hopper tank 12. It comes to float a little upward so that it does not come into contact with. In this way, the diaphragm member 65 floated slightly above the receiving port 13a.
And a gap 70 is formed between the receiving ports 13a.

【００２９】また例えば、図１０に示すように、絞り部
材６５に棒部材６７が設けられておらず、その代わり
に、絞り部材６５に支持部材６９を設けてもよい。支持
部材６９は、絞り部材６５とホッパタンク１２の間を接
続する部材であり、従って該支持部材６９を介して、絞
り部材６５はホッパタンク１２内の所定の位置に固定さ
れる。この所定の位置とは、絞り部材６５が、受入口１
３ａに対して、ホッパタンク１２の底部１２ｂに当接し
ない程度にやや上方に離れ、絞り面６６と受入口１３ａ
の間に間隙７０が形成される位置である。なお、この支
持部材６９の代わりに、図１０の二点鎖線で示すよう
に、支持部材６９ｘを採用してもよい。即ち、支持部材
６９ｘは、絞り部材６５の突起部材６８と砥粒供給管１
５の管壁の間を接続する部材である。更に、これら支持
部材６９或いは支持部材６９ｘの代わりに、図１１に示
すように、支持部材６９ｙを採用してもよい。即ち、支
持部材６９ｙは、絞り部材６５の突起部材６８の下端に
接続された棒状の部材であり、砥粒供給管１５内を下方
に伸延している。支持部材６９ｙの下端は砥粒送出空間
３の底端に到達しており、該底端においてケーシング２
に接続されている。Further, for example, as shown in FIG. 10, the rod member 67 is not provided on the diaphragm member 65, and instead, the support member 69 may be provided on the diaphragm member 65. The support member 69 is a member that connects the throttle member 65 and the hopper tank 12, and thus the throttle member 65 is fixed at a predetermined position in the hopper tank 12 via the support member 69. The predetermined position means that the diaphragm member 65 is the receiving port 1
3a, the upper surface of the hopper tank 12 is slightly separated from the bottom surface 12b of the hopper tank 12 so that it does not come into contact with the bottom surface 12b.
This is the position where the gap 70 is formed between the two. Instead of the support member 69, a support member 69x may be adopted as shown by the chain double-dashed line in FIG. That is, the support member 69x includes the projection member 68 of the diaphragm member 65 and the abrasive grain supply pipe 1.
5 is a member that connects between the pipe walls. Further, instead of the support member 69 or the support member 69x, a support member 69y may be adopted as shown in FIG. That is, the support member 69y is a rod-shaped member connected to the lower end of the protrusion member 68 of the diaphragm member 65, and extends downward in the abrasive grain supply pipe 15. The lower end of the support member 69y reaches the bottom end of the abrasive grain delivery space 3, and the casing 2 is located at the bottom end.
It is connected to the.

【００３０】またその他の実施例としては、図１２に示
すように、絞り部材６５の棒部材６７の上部には平板部
６７ａが設けられていない。そして、ホッパタンク１２
内にソレノイド等の駆動ユニット１７を設けておき（駆
動ユニット１７は例えば上板部２６に垂設させる）、該
駆動ユニット１７に、前記棒部材６７の上部を接続す
る。即ち、駆動ユニット１７の駆動により棒部材６７及
び絞り部材６５を上下等に動かし、砥粒貯蔵空間１２ａ
内のビーズＴＲを攪撓できるようにする。この場合も、
駆動ユニット１７を駆動させて、絞り面６６と受入口１
３ａの間に間隙７０が形成されるような状態に絞り部材
６５を配置することにより、上述した各実施例と同様の
効果を得ることができる。As another embodiment, as shown in FIG. 12, the flat plate portion 67a is not provided above the rod member 67 of the diaphragm member 65. And the hopper tank 12
A drive unit 17 such as a solenoid is provided inside the drive unit 17 (the drive unit 17 is vertically installed on the upper plate portion 26, for example), and the upper portion of the rod member 67 is connected to the drive unit 17. That is, the rod member 67 and the diaphragm member 65 are moved up and down by the drive of the drive unit 17 to move the abrasive grain storage space 12a.
Allow the beads TR inside to be deflected. Again,
By driving the drive unit 17, the diaphragm surface 66 and the receiving port 1
By arranging the diaphragm member 65 in such a state that the gap 70 is formed between the 3a, it is possible to obtain the same effect as that of each of the above-described embodiments.

【００３１】[0031]

【発明の効果】以上説明したように本発明のうち第１の
発明は、ビーズＴＲ等の砥粒を貯留し得る砥粒送出空間
３等の砥粒送出空間が内部に形成されたケーシング２等
のケーシング及び、該砥粒送出空間に貯留された砥粒を
取り出して外部に吹き出し得る回転駆動手段７、送出回
転体９、送出空間加圧手段５０、砥粒吹出手段５１等の
砥粒取出・吹出手段及び、前記砥粒送出空間に砥粒を供
給し得る砥粒供給手段１１等のホッパ装置を有したブラ
スト加工機において、前記ホッパ装置は、ホッパタンク
１２等のホッパタンクを、前記ケーシングの上方に配置
され得る形で有し、前記ホッパタンクの内部に砥粒貯蔵
空間１２ａ等の砥粒貯蔵空間を、砥粒を貯蔵自在な形で
形成し、前記ホッパタンクに砥粒導入穴１３、砥粒供給
管１５等の砥粒輸送路を、該砥粒輸送路により前記ホッ
パタンクと前記ケーシングとの間を接続し得る形で設
け、前記砥粒輸送路の上端に受入口１３ａ等の砥粒受入
口を、前記ホッパタンクの底部１２ｂ等の底部におい
て、前記砥粒貯蔵空間に開口した形で形成し、前記砥粒
輸送路の下端に排出口１５ａ等の砥粒排出口を、前記ケ
ーシングの前記砥粒送出空間に開口した形で形成し、前
記砥粒受入口に、逆錐状の絞り面６６等の絞り面が形成
された絞り部材６５等の受入口絞り部材を、該絞り面を
前記砥粒受入口に対向させた形で挿嵌配設し、前記砥粒
受入口と前記絞り面との間に、間隙７０等の砥粒通過間
隙を形成して構成されるので、本発明によるホッパ装置
によるケーシングの砥粒送出空間への砥粒の供給は、砥
粒貯蔵空間に貯蔵されていた砥粒が自重により下方に流
動してホッパタンクの底部に到達し、該底部に到達した
砥粒が、受入口絞り部材の絞り面と、砥粒受入口との間
の砥粒通過間隙を通過して砥粒輸送路に流入し、該砥粒
輸送路を通って砥粒排出口を介して砥粒送出空間に排出
される形で行われる。この際、絞り面が逆錐状となって
いるため、砥粒が該絞り面付近で停滞しにくくなってい
る。つまり、砥粒通過間隙付近、従って砥粒受入口付近
で砥粒がブリッジを作る形で停滞し詰まるようなことは
極力防止されている。よって、砥粒送出空間に吹き出し
用の砥粒をスムーズに供給することができ、安定した吹
き出しが行える。また、絞り面が逆錐状となった受入口
絞り部材が、砥粒受入口に挿嵌配設されていることか
ら、砥粒受入口と絞り面との間に形成される砥粒通過間
隙は略環状に形成されることになる。ところで、砥粒等
の粉体が点状の穴に流入する場合に、該穴の周囲にでき
るブリッジと、環状の穴に流入する場合に、該穴の周囲
にできるブリッジとを比較すると、環状の穴の周囲にで
きるブリッジのほうがそのバランスを保ちにくく、従っ
てその形成が困難であることが知られている。つまり、
本発明では、上述したように砥粒通過間隙が略環状に形
成されるので、該砥粒通過間隙の周囲にブリッジが極力
形成されにくくなっている。よって、砥粒送出空間に吹
き出し用の砥粒をスムーズに供給することができ、安定
した吹き出しが行える。また、本発明では砥粒受入口が
受入口絞り部材により絞られていることにより、例えば
砥粒受入口から砥粒が塊となって砥粒輸送路内に流入
し、砥粒送出空間に砥粒が、急激に、かつ不用意に多量
に供給されてしまうようなことが防止されているので都
合がよい。なお、砥粒の粒度が４００番（４００番は粒
径範囲が５３μ以下である）程度である場合には、ブリ
ッジ等が発生しやすくなるので、４００番程度（或いは
４００番以上）の砥粒による吹き出しを行う際に、本発
明によるホッパ装置を用いると、その効果は従来のもの
に比べて顕著となる。As described above, according to the first aspect of the present invention, the casing 2 and the like in which the abrasive grain delivery space such as the abrasive grain delivery space 3 that can store the abrasive grains such as the beads TR is formed. Of the casing and the abrasive grains taken out from the abrasive grains stored in the abrasive grain delivery space, such as the rotation driving means 7, the delivery rotating body 9, the delivery space pressurizing means 50, and the abrasive grain blowing means 51, which can blow the abrasive grains to the outside. In a blasting machine having a blowing means and a hopper device such as abrasive grain supply means 11 capable of supplying abrasive grains to the abrasive grain delivery space, the hopper device includes a hopper tank such as a hopper tank 12 above the casing. In the hopper tank, an abrasive grain storage space such as an abrasive grain storage space 12a is formed in a form in which the abrasive grains can be stored, and the hopper tank has an abrasive grain introduction hole 13 and an abrasive grain supply pipe. Abrasive grains such as 15 A passage is provided so that the hopper tank and the casing can be connected by the abrasive grain transport passage, and an abrasive grain inlet such as an inlet 13a is provided at the upper end of the abrasive grain transport passage and a bottom portion 12b of the hopper tank is provided. At the bottom of the abrasive grain storage space, and an abrasive grain discharge port such as a discharge port 15a is formed at the lower end of the abrasive grain transport path so as to open in the abrasive grain delivery space of the casing. Then, in the form in which the diaphragm surface is opposed to the abrasive grain receiving port, a receiving port diaphragm member such as a diaphragm member 65 in which a diaphragm surface such as an inverted cone-shaped diaphragm surface 66 is formed in the abrasive grain receiving port is provided. Since it is configured to be inserted and fitted and an abrasive grain passage gap such as a gap 70 is formed between the abrasive grain receiving port and the drawing surface, the abrasive grain delivery space of the casing by the hopper device according to the present invention is formed. The abrasive grains stored in the abrasive grain storage space are supplied by the The abrasive particles that flow further downward and reach the bottom of the hopper tank, and the abrasive grains that have reached the bottom pass through the abrasive grain passage gap between the throttle surface of the inlet throttle member and the abrasive grain inlet, and transport the abrasive grains. It is carried out in such a form that it flows into the passage and is discharged into the abrasive grain delivery space through the abrasive grain transport passage and the abrasive grain discharge port. At this time, since the squeezing surface has an inverted conical shape, the abrasive grains are unlikely to stay near the squeezing surface. In other words, it is prevented as much as possible that the abrasive grains become stagnant and clogged in the form of a bridge near the abrasive grain passage gap, that is, near the abrasive grain receiving port. Therefore, the abrasive grains for blowing can be smoothly supplied to the abrasive grain sending space, and stable blowing can be performed. In addition, since the receiving inlet throttle member having a conical drawing surface is inserted and disposed in the abrasive grain receiving port, the abrasive grain passage gap formed between the abrasive grain receiving port and the throttle surface is formed. Will be formed in a substantially annular shape. By the way, when powder such as abrasive grains flows into a dot-shaped hole, a bridge formed around the hole is compared with a bridge formed around the hole when flowing into an annular hole. It is known that the bridges around the holes of the are less balanced and therefore more difficult to form. That is,
In the present invention, since the abrasive grain passage gap is formed in a substantially annular shape as described above, the bridge is hardly formed around the abrasive grain passage gap as much as possible. Therefore, the abrasive grains for blowing can be smoothly supplied to the abrasive grain sending space, and stable blowing can be performed. Further, in the present invention, since the abrasive grain receiving port is narrowed by the receiving port restricting member, for example, the abrasive grains are aggregated from the abrasive grain receiving port and flow into the abrasive grain transportation path, and the abrasive grain is delivered to the abrasive grain delivery space. This is convenient because it is possible to prevent the particles from being suddenly and inadvertently supplied in a large amount. If the grain size of the abrasive grains is about 400 (the grain size range of 400 is 53 μ or less), bridges and the like are likely to occur. When the hopper device according to the present invention is used for the blowing by the method, the effect becomes more remarkable than the conventional one.

【００３２】また本発明のうち第２の発明は、第１の発
明によるブラスト加工機用のホッパ装置において、前記
受入口絞り部材は、前記ホッパタンクの底部に載置され
ている。即ち、万一、受入口絞り部材の付近等で砥粒に
よるブリッジが形成された場合には、例えば砥粒輸送路
側から砥粒貯蔵空間側に向けて空気圧等を加えて、これ
ら砥粒によるブリッジを粉砕するようにする。この場
合、受入口絞り部材は、上述したようにホッパタンクの
底部に載置されているので、砥粒輸送路側からの空気圧
等により上方等に容易に押圧移動され得るようになって
いる。つまり、受入口絞り部材の移動により、該受入口
絞り部材付近の砥粒によるブリッジは容易に粉砕される
ようになっている。よって、第１の発明による効果に加
えて、砥粒によるブリッジの粉砕解消が容易である。ま
た、受入口絞り部材はホッパタンクの底部に載置されて
いるので、受入口絞り部材の設置や取外しが容易にな
る。よって、部品交換や清掃作業が容易になる。更に、
ホッパタンクの震動や砥粒貯蔵空間内の砥粒による圧力
等により、ホッパタンクの底部に載置された受入口絞り
部材は横方向等に震動しやすくなっている。つまり、受
入口絞り部材が震動することにより、該受入口絞り部材
付近での砥粒によるブリッジは形成されにくくなる。A second aspect of the present invention is the hopper device for a blasting machine according to the first aspect, wherein the inlet throttle member is placed on the bottom of the hopper tank. That is, in the unlikely event that a bridge formed of abrasive grains is formed near the inlet throttle member, for example, air pressure is applied from the abrasive grain transport path side toward the abrasive grain storage space side, and the bridge formed by these abrasive grains is used. Try to crush. In this case, since the inlet throttle member is mounted on the bottom of the hopper tank as described above, it can be easily pushed and moved upward by air pressure from the abrasive grain transport path side. That is, the bridge of the abrasive grains near the receiving throttle member is easily crushed by the movement of the receiving throttle member. Therefore, in addition to the effect of the first invention, it is easy to eliminate the crushing of the bridge by the abrasive grains. Further, since the inlet throttle member is mounted on the bottom of the hopper tank, the inlet throttle member can be easily installed and removed. Therefore, parts replacement and cleaning work become easy. Furthermore,
Due to the vibration of the hopper tank, the pressure of the abrasive grains in the abrasive grain storage space, and the like, the inlet throttle member mounted on the bottom of the hopper tank is liable to oscillate laterally. In other words, the vibration of the inlet throttle member makes it difficult to form a bridge of abrasive grains near the inlet throttle member.

【００３３】また本発明のうち第３の発明は、第２の発
明によるブラスト加工機用のホッパ装置において、前記
受入口絞り部材に棒部材６７、平板部６７ａ等の被ガイ
ド部材を、該受入口絞り部材から上方に伸延した形で設
け、前記ホッパタンクの上部に砥粒投入穴２７等のガイ
ド手段を、前記被ガイド部材の横方向の移動を防止し得
る形で、前記被ガイド部材の上部に対応した位置に設け
たので、ホッパタンクの不用意な震動や砥粒貯蔵空間内
の砥粒による不用意な圧力等により、ホッパタンクの底
部に載置された受入口絞り部材が横方向に不用意に移動
しようとしても、該受入口絞り部材に設けられた被ガイ
ド部材の横方向の移動がガイド手段により防止されてい
るため、該受入口絞り部材の横方向の不用意な移動は極
力防止される。よって、第２の発明による効果に加え
て、受入口絞り部材が砥粒受入口から外れ、砥粒受入口
に多量の砥粒が急激に流入するなどのトラブルが防止さ
れ、砥粒送出空間への砥粒の供給が安定して行える。A third aspect of the present invention is the hopper device for a blasting machine according to the second aspect, wherein the receiving throttle member includes a guided member such as a bar member 67 and a flat plate portion 67a. An upper part of the guided member is provided so as to extend upward from the inlet throttle member, and a guide means such as an abrasive grain input hole 27 is provided on the upper part of the hopper tank in a form capable of preventing lateral movement of the guided member. Since it is installed at a position corresponding to the above, due to careless vibration of the hopper tank and careless pressure caused by the abrasive grains in the abrasive grain storage space, the inlet throttle member placed on the bottom of the hopper tank is not provided laterally. The guide member prevents the guided member provided in the inlet throttle member from moving in the lateral direction, the inadvertent lateral movement of the inlet throttle member is prevented as much as possible. It Therefore, in addition to the effect of the second aspect of the invention, troubles such as the receiving inlet throttle member being disengaged from the abrasive grain receiving port and a large amount of abrasive grains suddenly flowing into the abrasive grain receiving port can be prevented, and the abrasive grain delivery space can be prevented. The abrasive grains can be stably supplied.

【００３４】また本発明のうち第４の発明は、第１の発
明によるブラスト加工機用のホッパ装置において、前記
受入口絞り部材に突起部材６８等の突起部材を、該受入
口絞り部材から下方に、前記砥粒輸送路内に伸延した形
で設けたので、ホッパタンクの不用意な震動や砥粒貯蔵
空間内の砥粒による不用意な圧力等により、受入口絞り
部材が横方向に不用意に移動しようとしても、該受入口
絞り部材に設けられた突起部材の横方向の移動が砥粒輸
送路にガイドされる形で防止されているため、該受入口
絞り部材の横方向の不用意な移動は極力防止される。よ
って、第１の発明による効果に加えて、受入口絞り部材
が砥粒受入口から外れ、砥粒受入口に多量の砥粒が急激
に流入するなどのトラブルが防止され、砥粒送出空間へ
の砥粒の供給が安定して行える。また、砥粒通過間隙を
通過して砥粒輸送路に流入した砥粒は、砥粒輸送路内に
おいて、突起部材の周囲を該突起部材に沿って流動す
る。上述したように突起部材は下方に伸延しているの
で、該突起部材に沿って流動する砥粒は、該突起部材に
よって整流されることになる。つまり、砥粒輸送路を流
動する砥粒が詰まったりせず、砥粒のスムーズな供給が
実現する。A fourth invention of the present invention is the hopper device for a blasting machine according to the first invention, wherein a projection member such as a projection member 68 is provided on the receiving throttle member downward from the receiving throttle member. In addition, because it was provided in the form of extending into the abrasive grain transport path, due to the careless vibration of the hopper tank and the careless pressure of the abrasive grains in the abrasive grain storage space Even if it is attempted to move, the lateral movement of the projection member provided on the inlet throttle member is prevented in the form of being guided by the abrasive grain transport path. Movement is prevented as much as possible. Therefore, in addition to the effect of the first aspect of the present invention, troubles such as the receiving port throttle member being disengaged from the abrasive grain receiving port and a large amount of abrasive grains suddenly flowing into the abrasive grain receiving port can be prevented, and the abrasive grain delivery space can be prevented. The abrasive grains can be stably supplied. Further, the abrasive grains that have passed through the abrasive grain passage gap and flowed into the abrasive grain transport path flow around the protrusion member along the protrusion member in the abrasive grain transport path. Since the protrusion member extends downward as described above, the abrasive grains flowing along the protrusion member are rectified by the protrusion member. That is, the abrasive grains flowing in the abrasive grain transport path are not clogged, and the smooth supply of the abrasive grains is realized.

【図面の簡単な説明】[Brief description of the drawings]

【図１】図１は、本発明によるホッパ装置の一例が適用
されたブラスト加工機であり、ケーシング側を示した側
断面図である。FIG. 1 is a side sectional view showing a casing side of a blasting machine to which an example of a hopper device according to the present invention is applied.

【図２】図２は、図１に示すブラスト加工機のうち、ホ
ッパタンク側を示した側断面図である。FIG. 2 is a side sectional view showing a hopper tank side of the blasting machine shown in FIG.

【図３】図３は、図１のＸ１−Ｙ１線による縦断面図で
ある。FIG. 3 is a vertical cross-sectional view taken along line X1-Y1 of FIG.

【図４】図４は、図２のＸ２−Ｙ２線による平断面図で
ある。4 is a plan sectional view taken along line X2-Y2 of FIG.

【図５】図５は、送出回転体付近を示した斜視図であ
る。FIG. 5 is a perspective view showing the vicinity of a delivery rotating body.

【図６】図６は、送出空間加圧手段の箱体を示した側断
面図である。FIG. 6 is a side sectional view showing a box body of the delivery space pressurizing means.

【図７】図７は、受入口絞り部材付近を示した詳細図で
ある。FIG. 7 is a detailed view showing the vicinity of a receiving throttle member.

【図８】図８は、図７のＸ３−Ｙ３線による断面図であ
る。8 is a sectional view taken along line X3-Y3 of FIG. 7.

【図９】図９は、本発明によるホッパ装置の別の一例で
あり、受入口絞り部材付近を示した図である。FIG. 9 is another example of the hopper device according to the present invention, and is a view showing the vicinity of the inlet throttle member.

【図１０】図１０は、本発明によるホッパ装置の別の一
例であり、受入口絞り部材付近を示した図である。FIG. 10 is another example of the hopper device according to the present invention, and is a view showing the vicinity of the inlet throttle member.

【図１１】図１１は、本発明によるホッパ装置の別の一
例を示した側断面図である。FIG. 11 is a side sectional view showing another example of the hopper device according to the present invention.

【図１２】図１２は、本発明によるホッパ装置の別の一
例を示した側断面図である。FIG. 12 is a side sectional view showing another example of the hopper device according to the present invention.

【図１３】図１３は、従来のホッパ装置の一例を示した
側断面図である。FIG. 13 is a side sectional view showing an example of a conventional hopper device.

【符号の説明】[Explanation of symbols]

１……ブラスト加工機 ２……ケーシング ３……砥粒送出空間 ７……砥粒取出・吹出手段（回転駆動手段） ９……砥粒取出・吹出手段（送出回転体） １１……ホッパ装置（砥粒供給手段） １２……ホッパタンク １２ａ……砥粒貯蔵空間 １２ｂ……底部 １３……砥粒輸送路（砥粒導入穴） １３ａ……砥粒受入口（受入口） １５……砥粒輸送路（砥粒供給管） １５ａ……砥粒排出口（排出口） ２７……ガイド手段（砥粒投入穴） ５０……砥粒取出・吹出手段（送出空間加圧手段） ５１……砥粒取出・吹出手段（砥粒吹出手段） ６５……受入口絞り部材（絞り部材） ６６……絞り面 ６７……被ガイド部材（棒部材） ６７ａ……被ガイド部材（平板部） ６８……突起部材 ７０……砥粒通過間隙（間隙） ＴＲ……砥粒（ビーズ） 1 ... Blasting machine 2 ... Casing 3 ... Abrasive grain sending-out space 7 ... Abrasive grain taking-out / blowing means (rotation driving means) 9 ... Abrasive grain taking-out / blowing means (feeding rotary body) 11 ... Hopper device (Abrasive grain supply means) 12 ... hopper tank 12a ... abrasive grain storage space 12b ... bottom 13 ... abrasive grain transport path (abrasive grain introduction hole) 13a ... abrasive grain inlet (reception port) 15 ... abrasive grain Transport path (abrasive grain supply pipe) 15a ... Abrasive grain discharge port (discharge port) 27 ... Guide means (abrasive grain input hole) 50 ... Abrasive grain extraction / blowing means (delivery space pressurizing means) 51 ... Grinding Grain take-out / blowing means (abrasive grain blowing means) 65 ... Receiving inlet throttle member (throttle member) 66 ... Throttling surface 67 ... Guided member (rod member) 67a ... Guided member (flat plate portion) 68. Projection member 70 ... Abrasive grain passage gap (gap) TR ... Abrasive grain (beads)

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】砥粒を貯留し得る砥粒送出空間が内部に形
成されたケーシング及び、該砥粒送出空間に貯留された
砥粒を取り出して外部に吹き出し得る砥粒取出・吹出手
段及び、前記砥粒送出空間に砥粒を供給し得るホッパ装
置を有したブラスト加工機において、前記ホッパ装置
は、 ホッパタンクを、前記ケーシングの上方に配置され得る
形で有し、 前記ホッパタンクの内部に砥粒貯蔵空間を、砥粒を貯蔵
自在な形で形成し、 前記ホッパタンクに砥粒輸送路を、該砥粒輸送路により
前記ホッパタンクと前記ケーシングとの間を接続し得る
形で設け、 前記砥粒輸送路の上端に砥粒受入口を、前記ホッパタン
クの底部において、前記砥粒貯蔵空間に開口した形で形
成し、 前記砥粒輸送路の下端に砥粒排出口を、前記ケーシング
の前記砥粒送出空間に開口した形で形成し、 前記砥粒受入口に、逆錐状の絞り面が形成された受入口
絞り部材を、該絞り面を前記砥粒受入口に対向させた形
で挿嵌配設し、 前記砥粒受入口と前記絞り面との間に、砥粒通過間隙を
形成して構成した、ブラスト加工機用のホッパ装置。1. A casing having an abrasive grain delivery space capable of storing abrasive grains formed therein, and an abrasive grain ejection / blowing means capable of taking out the abrasive grains stored in the abrasive grain delivery space and ejecting the abrasive grains to the outside. In a blasting machine having a hopper device capable of supplying abrasive grains to the abrasive grain delivery space, the hopper device has a hopper tank in a form that can be arranged above the casing, and the abrasive grains are provided inside the hopper tank. The storage space is formed so that abrasive grains can be stored therein, and an abrasive grain transport path is provided in the hopper tank in such a form that the hopper tank and the casing can be connected by the abrasive grain transport path. An abrasive grain receiving port is formed at the upper end of the passage, at the bottom of the hopper tank, is formed with an opening to the abrasive grain storage space, and an abrasive grain discharge port is formed at the lower end of the abrasive grain transporting passage, and the abrasive grain delivery of the casing. Sky And an inlet constricting member having an inverted cone-shaped constricting surface formed in the abrasive grain receiving opening, and the insertion surface is arranged so that the constricting surface faces the abrasive grain receiving opening. A hopper device for a blasting machine, wherein an abrasive grain passage gap is formed between the abrasive grain receiving port and the drawing surface. 【請求項２】前記受入口絞り部材は、前記ホッパタンク
の底部に載置されていることを特徴とする請求項１記載
の、ブラスト加工機用のホッパ装置。2. The hopper device for a blast machine according to claim 1, wherein the inlet throttle member is mounted on the bottom of the hopper tank. 【請求項３】前記受入口絞り部材に被ガイド部材を、該
受入口絞り部材から上方に伸延した形で設け、 前記ホッパタンクの上部にガイド手段を、前記被ガイド
部材の横方向の移動を防止し得る形で、前記被ガイド部
材の上部に対応した位置に設けたことを特徴とする請求
項２記載の、ブラスト加工機用のホッパ装置。3. A guided member is provided on the inlet throttle member in a form extending upward from the inlet throttle member, and guide means is provided on an upper portion of the hopper tank to prevent lateral movement of the guided member. The hopper device for a blasting machine according to claim 2, wherein the hopper device is provided at a position corresponding to the upper portion of the guided member in such a manner that the hopper can be processed. 【請求項４】前記受入口絞り部材に突起部材を、該受入
口絞り部材から下方に、前記砥粒輸送路内に伸延した形
で設けたことを特徴とする請求項１記載の、ブラスト加
工機用のホッパ装置。4. The blasting process according to claim 1, wherein a projection member is provided on the receiving inlet throttle member in a form extending downward from the receiving inlet throttle member into the abrasive grain transport path. Hopper device for machine.
JP29191295A 1995-10-13 1995-10-13 Hopper device for blasting machine Pending JPH09109028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29191295A JPH09109028A (en) 1995-10-13 1995-10-13 Hopper device for blasting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29191295A JPH09109028A (en) 1995-10-13 1995-10-13 Hopper device for blasting machine

Publications (1)

Publication Number Publication Date
JPH09109028A true JPH09109028A (en) 1997-04-28

Family

ID=17775073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29191295A Pending JPH09109028A (en) 1995-10-13 1995-10-13 Hopper device for blasting machine

Country Status (1)

Country Link
JP (1) JPH09109028A (en)

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