JPH09248764A - Abrasive supplying method in blasting device, abrasive supplying device, and blasting device provided with abrasive supplying device - Google Patents
Abrasive supplying method in blasting device, abrasive supplying device, and blasting device provided with abrasive supplying deviceInfo
- Publication number
- JPH09248764A JPH09248764A JP5189596A JP5189596A JPH09248764A JP H09248764 A JPH09248764 A JP H09248764A JP 5189596 A JP5189596 A JP 5189596A JP 5189596 A JP5189596 A JP 5189596A JP H09248764 A JPH09248764 A JP H09248764A
- Authority
- JP
- Japan
- Prior art keywords
- abrasive
- pipe
- abrasive material
- gas
- tip
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は天然の珪砂（サン
ド）、アルミナや炭化珪素の粉末、ガラスビーズ、微小
鋼球等から成る研磨材を空気などの流体と共に噴射ノズ
ルから高速で噴射して被加工物を梨地等の模様に加工
し、またガラス、シリコンウェハー等の精密彫刻加工、
プラズマディスプレーのリブの彫刻加工、また塗装の前
処理などの表面処理、表面加工を行うブラスト（吹付
け）加工における研磨材供給方法と研磨材供給装置およ
び研磨材供給装置を備えたブラスト装置に関し、特に、
サクション式ブラスト加工における研磨材供給方法と装
置およびこの装置を備えたブラスト装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to spray an abrasive material composed of natural silica sand (powder), alumina or silicon carbide powder, glass beads, fine steel balls or the like with a fluid such as air at a high speed from an injection nozzle. Processed products into patterns such as satin, precision engraving of glass, silicon wafers, etc.
The present invention relates to an abrasive material supplying method, an abrasive material supplying device, and a blasting device provided with an abrasive material supplying device in a blast (spraying) process for performing surface treatment such as engraving of ribs of a plasma display, pretreatment of coating, and the like, In particular,
The present invention relates to a method and an apparatus for supplying an abrasive material in suction blasting, and a blasting apparatus equipped with this apparatus.
【０００２】[0002]
【従来の技術】従来の一般的なサクション式ブラスト装
置における研磨材供給装置について簡単に説明すると、
一般的に研磨材供給装置は、図４に示すように、研磨材
から粉塵を分級して再使用可能な研磨材を回収する回収
タンク（図示省略）や、この回収タンクの下部に連通す
る研磨材タンク（図示省略）等の下部に研磨材調整器１
２０を設けられており、この研磨材調整器１２０は研磨
材供給管１１８を介して研磨材を噴射する噴射ノズル１
１０に連通されている。2. Description of the Related Art A brief description will be given of an abrasive material supplying device in a conventional general suction type blasting device.
Generally, as shown in FIG. 4, a polishing material supply device includes a recovery tank (not shown) for classifying dust from the polishing material to recover reusable polishing material, and a polishing tank communicating with a lower portion of the recovery tank. Abrasive adjuster 1 at the bottom of the material tank (not shown)
20 is provided, and this abrasive material adjuster 120 is an injection nozzle 1 for injecting an abrasive material through an abrasive material supply pipe 118.
It is connected to 10.
【０００３】前記研磨材調整器１２０についてより詳し
くは、研磨材調整器１２０の本体１２１（調整器本体）
の側壁には、調整器本体内の研磨材を吸入する第１サク
ションパイプ１２２が前記側壁を貫通して設けられてお
り、この第１サクションパイプの一端は開口されて調整
器本体内に臨んでおり、第１サクションパイプの他端は
研磨材供給管１１８を介して噴射ノズル１１０に連通さ
れている。また、前記第１サクションパイプを設けた側
壁の反対側の側壁には、両端開口の第２サクションパイ
プ１２３が前記側壁を貫通して設けられ、この第２サク
ションパイプの先端部１２４は第１サクションパイプの
前記開口１２５に隙間を介して臨んでおり、第２サクシ
ョンパイプ１２３の後端の開口は調整器本体１２１の側
壁の外方へ臨んでいる。More specifically, the abrasive material adjuster 120 will be described in more detail below.
A first suction pipe 122 for sucking the abrasive in the adjuster body is provided on the side wall of the penetrating the side wall, and one end of the first suction pipe is opened to face the adjuster body. The other end of the first suction pipe is communicated with the injection nozzle 110 via the abrasive supply pipe 118. Further, a second suction pipe 123 having openings at both ends is provided through the side wall on the side wall opposite to the side wall provided with the first suction pipe, and the tip end portion 124 of the second suction pipe is the first suction. It faces the opening 125 of the pipe through a gap, and the opening at the rear end of the second suction pipe 123 faces the outside of the side wall of the adjuster body 121.
【０００４】また、上記の第１サクションパイプに連通
する噴射ノズル１１０についてより詳しくは、図４に示
すように、噴射ノズル１１０のノズルボディ１１１は、
上記の研磨材調整器１２０から研磨材供給管１１８を介
して研磨材導入口１１７に連通して研磨材が誘導される
略円筒容器状の研磨材誘導室１１２が形成され、この研
磨材誘導室１１２の前端部には円錐状に絞られた円錐内
面１１６が形成され、この円錐内面１１６に貫通するノ
ズル１１４が設けられている。そして、前記円錐内面１
１６の内側には、研磨材誘導室１１２の後方から挿入さ
れた空気噴射管１１３の先端部が配置されている。この
空気噴射管１１３はネジ１２７でノズルボディの後部に
固定されている。また、空気噴射管１１３は図示せざる
圧縮空気供給源に圧縮空気供給管１１９を介して連通さ
れており、比較的高圧の圧縮空気が送られ、空気噴射管
１１３の先端から空気流が噴射する。なお、空気噴射管
１１３の先端の外周には研磨材の衝撃による磨耗を防ぐ
ために空気噴射管カバー１２６が外装されている。ま
た、ホルダ１１５は内周面にテーパ部を備えた円筒形状
をなしており、ホルダ１１５の前記テーパ部でノズル１
１４の外周のテーパ部が外嵌され、ホルダ１１５の外周
に設けたネジ部でノズルボディ１１１に螺着することに
よりノズル１１４がノズルボディ１１１に固定される。More specifically, as shown in FIG. 4, the nozzle body 111 of the injection nozzle 110, which is in communication with the above-mentioned first suction pipe, is as follows.
An abrasive guide chamber 112, which is in the shape of a substantially cylindrical container, is formed in which the abrasive is guided from the abrasive adjuster 120 via the abrasive supply pipe 118 to the abrasive inlet 117, and the abrasive guide chamber 112 is formed. A conical inner surface 116 that is conically narrowed is formed at the front end portion of 112, and a nozzle 114 that penetrates the conical inner surface 116 is provided. And the inner surface 1 of the cone
Inside the inside of 16, the tip of an air injection pipe 113 inserted from the rear of the abrasive guide chamber 112 is arranged. The air injection pipe 113 is fixed to the rear portion of the nozzle body with a screw 127. Further, the air injection pipe 113 is in communication with a compressed air supply source (not shown) via a compressed air supply pipe 119, relatively high pressure compressed air is sent, and an air flow is ejected from the tip of the air injection pipe 113. . An air injection pipe cover 126 is provided on the outer periphery of the tip of the air injection pipe 113 in order to prevent abrasion of the abrasive due to impact. Further, the holder 115 has a cylindrical shape having a tapered portion on the inner peripheral surface, and the tapered portion of the holder 115 forms the nozzle 1
The nozzle 114 is fixed to the nozzle body 111 by externally fitting the taper portion of the outer periphery of the nozzle 14 and screwing onto the nozzle body 111 with a screw portion provided on the outer periphery of the holder 115.
【０００５】図示せざる圧縮空気供給源からの圧縮空気
を前記空気噴射管１１３の先端からノズル１１４へ向け
て噴射すると、研磨材誘導室１１２内が負圧になるの
で、この負圧により研磨材供給管１１８及び上述した第
１サクションパイプ１２２内も負圧になる。この第１サ
クションパイプ内の負圧により、調整器本体１２１内の
研磨材は第１サクションパイプ１２２の後端側の開口１
２５と第２サクションパイプの先端部１２４との間の隙
間から第１サクションパイプ１２２内へ吸引され、一
方、第２サクションパイプ１２３内が負圧になるので研
磨材調整器１２０の外方の空気が第２サクションパイプ
１２３を経て第１サクションパイプ１２２内へ吸入され
る。したがって、この空気流によって第１サクションパ
イプ１２２内の前記研磨材が研磨材供給管１１８を経て
噴射ノズル１１０の研磨材誘導室１１２へ吸引される。
研磨材誘導室１１２内の研磨材は、前記円錐内面１１６
と空気噴射管１１３の外周の環状の間隙部分に誘導さ
れ、空気噴射管１１３の空気流に乗って加速され、ノズ
ル１１４から外部の被加工物へ噴射される。When compressed air from a compressed air supply source (not shown) is jetted from the tip of the air injection pipe 113 toward the nozzle 114, the inside of the abrasive material guiding chamber 112 becomes a negative pressure, and this negative pressure causes the abrasive material to be abraded. The supply pipe 118 and the above-mentioned first suction pipe 122 also have negative pressure. Due to the negative pressure in the first suction pipe, the abrasive in the adjuster body 121 causes the opening 1 on the rear end side of the first suction pipe 122.
25 is sucked into the first suction pipe 122 from the gap between the second suction pipe 122 and the tip portion 124 of the second suction pipe, while the negative pressure is generated in the second suction pipe 123. Is sucked into the first suction pipe 122 through the second suction pipe 123. Therefore, due to this air flow, the abrasive in the first suction pipe 122 is sucked into the abrasive guide chamber 112 of the injection nozzle 110 through the abrasive supply pipe 118.
The abrasive in the abrasive guide chamber 112 is the inner surface 116 of the cone.
And is guided to the annular gap portion on the outer periphery of the air injection pipe 113, is accelerated by riding on the air flow of the air injection pipe 113, and is injected from the nozzle 114 to the external workpiece.
【０００６】研磨材調整器の他の例としては、調整器本
体の側壁から内部を通過し前記側壁の反対側の側壁を貫
通するサクションパイプを設け、このサクションパイプ
の上部に小径の導入孔を設けている。前記サクションパ
イプの一端は研磨材供給管を介して噴射ノズル１１０に
連通し、サクションパイプの他端は調整器本体の側壁の
外方へ臨んでいる。このような研磨材調整器は調整器本
体内の研磨材が前記導入孔からサクションパイプへ徐々
にほぼ一定の速度で落下し、サクションパイプ内へ円錐
体を成すように積み上げられ、この円錐体の研磨材はサ
クションパイプ内を流れる空気流により噴射ノズル１１
０へ向けて吸引される。As another example of the abrasive material adjuster, a suction pipe passing through the side wall of the adjuster body and penetrating the side wall opposite to the side wall is provided, and a small-diameter introducing hole is provided at the upper part of the suction pipe. It is provided. One end of the suction pipe communicates with the injection nozzle 110 through the abrasive supply pipe, and the other end of the suction pipe faces the outside of the side wall of the adjuster body. In such an abrasive material adjuster, the abrasive material in the adjuster body gradually drops from the introduction hole to the suction pipe at a substantially constant speed and is piled up in the suction pipe so as to form a cone. The abrasive is sprayed by the jet nozzle 11 by the air flow flowing in the suction pipe.
It is sucked toward 0.
【０００７】[0007]
【発明が解決しようとする課題】従来のブラスト加工に
おける研磨材供給装置にあっては、噴射ノズル１１０に
は、研磨材供給管１１８と圧縮空気供給管１１９の２本
の管が必要であるために噴射ノズル１１０が非常に重く
なり、また小型化を図ることが難しかった。そのために
噴射ノズル１１０が扱いにくく、操作性が悪いので作業
能率を低下させるという問題点があった。In the conventional abrasive supplying device for blasting, the injection nozzle 110 requires two pipes, an abrasive supplying pipe 118 and a compressed air supplying pipe 119. Moreover, the injection nozzle 110 becomes very heavy, and it is difficult to reduce the size. Therefore, the injection nozzle 110 is difficult to handle, and the operability is poor, so that there is a problem that the work efficiency is reduced.
【０００８】また、研磨材調整器１２０の研磨材は、第
１サクションパイプ内の負圧によって吸引されてから研
磨材供給管１８を経て噴射ノズル１１０の研磨材誘導室
１１２内へ供給され、この研磨材誘導室１１２内の研磨
材は、空気噴射管１１３から噴射される空気流によって
加速され、この空気流前方のノズル１１４でさらに加速
されてノズル１１４の先端から噴射される。ところが、
空気噴射管１１３の先端からノズル１１４の入口までの
間の距離が短いために研磨材が充分に加速されないまま
ノズル１１４の先端から噴射されることになるので、研
磨材の噴射力を増大させるには限界があった。しかも、
重い研掃材ほど加速性が悪いので、重い研磨材ほど加工
能率を向上できないという問題点があった。Further, the abrasive of the abrasive adjuster 120 is sucked by the negative pressure in the first suction pipe, and then supplied into the abrasive guide chamber 112 of the injection nozzle 110 through the abrasive supply pipe 18, The abrasive in the abrasive guide chamber 112 is accelerated by the air flow injected from the air injection pipe 113, is further accelerated by the nozzle 114 in front of this air flow, and is injected from the tip of the nozzle 114. However,
Since the distance between the tip of the air jet pipe 113 and the inlet of the nozzle 114 is short, the abrasive is jetted from the tip of the nozzle 114 without being sufficiently accelerated, and thus the jetting force of the abrasive is increased. There was a limit. Moreover,
Since a heavier abrasive material has a lower acceleration property, a heavier abrasive material cannot improve the processing efficiency.
【０００９】本発明は叙上の問題点を解決するために開
発されたもので、噴射ノズルの軽量化を図ると共に研磨
材の噴射力を増大させ、ブラスト加工能率の向上を図り
得るブラスト加工における研磨材供給方法およびその装
置およびこの装置を備えたブラスト装置を提供すること
を目的とする。The present invention was developed in order to solve the above-mentioned problems, and in the blasting process that can reduce the weight of the injection nozzle and increase the injection force of the abrasive to improve the blasting efficiency. An object of the present invention is to provide a method for supplying an abrasive, an apparatus therefor, and a blasting apparatus equipped with this apparatus.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
に、本発明のブラスト加工における研磨材供給方法は、
圧縮気体により噴射する噴射ノズル３０と、この噴射ノ
ズル３０に研磨材を給送する研磨材供給管１９を介して
研磨材を一定量収納する研磨材調整器１０を備え、前記
研磨材調整器１０に連通する研磨材導入管１２の開口１
３内に、圧縮気体供給源に連通した気体噴射管２１の先
端部２３を挿入し、この気体噴射管２１の先端部２３か
ら前記研磨材導入管１２内へ圧縮気体を噴射することに
より、研磨材調整器１０内の研磨材を、気体噴射管２１
の先端部２３と研磨材導入管１２の開口１３との間で形
成した導入口１５から研磨材導入管１２内へ導入して気
体と研磨材とを混合し、この混合流体を前記研磨材導入
管１２に連結した研磨材供給管１９を介して加速し噴射
ノズル３０に供給することを特徴とする。In order to achieve the above object, the method for supplying an abrasive in blasting according to the present invention comprises:
The abrasive material adjuster 10 is equipped with an injection nozzle 30 for injecting compressed gas and an abrasive material adjuster 10 for storing a fixed amount of abrasive material via an abrasive material supply pipe 19 for supplying the abrasive material to the injection nozzle 30. 1 of the abrasive introduction tube 12 communicating with the
The tip portion 23 of the gas injection pipe 21 that communicates with the compressed gas supply source is inserted into the inside of 3, and the compressed gas is jetted from the tip portion 23 of the gas injection pipe 21 into the abrasive material introduction pipe 12 to polish. The abrasive material in the material conditioner 10 is replaced with the gas injection pipe 21.
Is introduced into the abrasive material introducing pipe 12 through an inlet port 15 formed between the tip portion 23 and the opening 13 of the abrasive material introducing pipe 12 to mix gas and abrasive material, and the mixed fluid is introduced into the abrasive material introducing material. It is characterized in that it is accelerated through a polishing material supply pipe 19 connected to the pipe 12 and is supplied to the injection nozzle 30.
【００１１】また、本発明のブラスト加工における研磨
材供給装置は、前記研磨材調整器１０の調整器本体１１
に、該調整器本体１１内の研磨材が流入する開口１３を
備え且つ内部に気体と研磨材を混合する研磨材混合室１
４を備えた研磨材導入管１２を設け、この研磨材導入管
１２の前記開口１３内に圧縮気体供給源に連通する気体
噴射管２１の先端部２３を挿入し、この気体噴射管２１
の先端部２３と研磨材導入管１２の開口１３との間で研
磨材を導入する導入口１５を形成すると共に、前記研磨
材導入管１２の研磨材混合室側を研磨材供給管１９を介
して噴射ノズル３０に連通してなることを特徴とする。Further, the abrasive material supplying device in the blast processing of the present invention is the adjuster body 11 of the abrasive material adjuster 10.
In addition, an abrasive mixture chamber 1 is provided with an opening 13 into which the abrasive in the adjuster body 11 flows and which mixes a gas and an abrasive inside.
4 is provided, and the tip portion 23 of the gas injection pipe 21 communicating with the compressed gas supply source is inserted into the opening 13 of the abrasive injection pipe 12, and the gas injection pipe 21
An inlet port 15 for introducing the abrasive is formed between the tip end portion 23 and the opening 13 of the abrasive introducing pipe 12, and the abrasive mixing chamber side of the abrasive introducing pipe 12 is connected to the abrasive supplying pipe 19. And is communicated with the injection nozzle 30.
【００１２】また、本発明の研磨材供給装置を備えたブ
ラスト装置は、前記研磨材調整器１０の調整器本体１１
に、該調整器本体１１内の研磨材が流入する開口１３を
備え且つ内部に気体と研磨材を混合する研磨材混合室１
４を備えた研磨材導入管１２を設け、この研磨材導入管
１２の前記開口１３内に圧縮気体供給源に連通する気体
噴射管２１の先端部２３を挿入し、この気体噴射管２１
の先端部２３と研磨材導入管１２の開口１３との間で研
磨材を導入する導入口１５を形成すると共に、前記研磨
材導入管１２の研磨材混合室側を研磨材供給管１９を介
して噴射ノズル３０に連通し、前記噴射ノズル３０は、
研磨材と気体の混合流体を導入するノズルボディ３１
と、前記混合流体の流れ方向前方に設けたノズル３３と
からのみでなることを特徴とする。Further, the blasting device equipped with the abrasive material supplying device of the present invention is the adjuster body 11 of the abrasive material adjuster 10.
In addition, an abrasive mixture chamber 1 is provided with an opening 13 into which the abrasive in the adjuster body 11 flows and which mixes a gas and an abrasive inside.
4 is provided, and the tip portion 23 of the gas injection pipe 21 communicating with the compressed gas supply source is inserted into the opening 13 of the abrasive injection pipe 12, and the gas injection pipe 21
An inlet port 15 for introducing the abrasive is formed between the tip end portion 23 and the opening 13 of the abrasive introducing pipe 12, and the abrasive mixing chamber side of the abrasive introducing pipe 12 is connected to the abrasive supplying pipe 19. Communicating with the jet nozzle 30, and the jet nozzle 30 is
Nozzle body 31 for introducing a mixed fluid of abrasive and gas
And a nozzle 33 provided at the front in the flow direction of the mixed fluid.
【００１３】また、前記気体噴射管２１の先端部２３と
研磨材導入管１２の開口１３とを接近、離反自在に形成
して導入口１５の間隔を調整可能に設けることが、噴射
ノズル３０へ供給される研磨材の量を調整できるという
点で望ましい。Further, the tip 23 of the gas injection pipe 21 and the opening 13 of the abrasive introduction pipe 12 are formed so as to be close to and away from each other so that the gap between the introduction ports 15 can be adjusted. It is desirable in that the amount of abrasive supplied can be adjusted.
【００１４】さらに、前記気体噴射管２１は、その先端
部２３の外周が先端に向けて小さくなるテーパ部２３ａ
を形成し、このテーパ部２３ａが研磨材導入管１２の開
口１３の内周に接近、離反可能に形成することができ
る。Further, the gas injection pipe 21 has a tapered portion 23a in which the outer periphery of the tip portion 23 becomes smaller toward the tip.
The taper portion 23a can be formed so as to be able to approach and separate from the inner circumference of the opening 13 of the abrasive introduction tube 12.
【００１５】さらに、気体噴射管２１の先端には筒状体
をなす誘導管２４を連結し、この誘導管２４の外周面並
びに気体噴射管２１のテーパ部２３ａと、研磨材導入管
１２の内周面との間で研磨材誘導部２７を形成すること
もできる。この誘導管２４は圧縮気体の噴射流の方向性
を一様に保つと共に、前記研磨材誘導部２７で研磨材の
流れを研磨材導入管１２の軸線方向に向ける働きをする
ので、圧縮気体の噴射流と研磨材の流れが共に整流され
るため研磨材の加速性を高めるという点で望ましい。Further, a guide pipe 24 having a cylindrical shape is connected to the tip of the gas injection pipe 21, and the outer peripheral surface of the guide pipe 24, the taper portion 23a of the gas injection pipe 21, and the abrasive material introduction pipe 12 are connected. It is also possible to form the abrasive material guiding portion 27 with the peripheral surface. The guide tube 24 keeps the directionality of the jet flow of the compressed gas uniform, and serves to direct the flow of the abrasive material in the abrasive material guide portion 27 in the axial direction of the abrasive material introduction tube 12. Since the jet flow and the flow of the abrasive are both rectified, it is desirable in that the acceleration of the abrasive is enhanced.
【００１６】[0016]
【発明の実施の形態】以下に、本発明のブラスト加工に
おける研磨材供給装置の実施の形態について図面を参照
して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an abrasive material supplying apparatus for blasting according to the present invention will be described below with reference to the drawings.
【００１７】まず、本発明のブラスト加工における研磨
材供給装置の全体を理解するために、この研磨材供給装
置を装着するブラスト装置の一例として、エア式重力式
ブラスト装置６０について説明する。First, in order to understand the entire abrasive material supplying device in the blast processing of the present invention, an air gravity blasting device 60 will be described as an example of the blasting device to which the abrasive material supplying device is mounted.
【００１８】図２及び図３において、キャビネット６１
は被加工物を出し入れする投入口６３を備えており、こ
のキャビネット６１内に前記投入口６３から投入した被
加工物に研磨材を噴射する噴射ノズル３０を設ける。ま
た、前記キャビネット６１の下部にはホッパ６８が設け
られ、ホッパ６８の最下端は導管６５を介してキャビネ
ット６１の上部に設置された研磨材回収用の回収タンク
７０の上部に連通する。2 and 3, the cabinet 61
Is provided with an input port 63 through which a workpiece is put in and out, and an injection nozzle 30 for jetting an abrasive material to the workpiece input through the input port 63 is provided in this cabinet 61. Further, a hopper 68 is provided in the lower part of the cabinet 61, and the lowermost end of the hopper 68 communicates with an upper part of a recovery tank 70 for recovering abrasives installed in the upper part of the cabinet 61 via a conduit 65.
【００１９】回収タンク７０はいわゆるサイクロンで、
粉塵を研磨材から分離する装置であり、図２に示すよう
に、上部に円筒形状を成す円筒部と、下部に下方に向け
て徐々に狭くなる円錐状を成す円錐部とから成り、回収
タンク７０の円筒部の上部の側壁に流入口７３を設け、
この流入口７３に連通管７５を介して前記導管６５の先
端を連結する。前記連通管７５の軸線方向は円筒部の横
断面円形を成す内壁面の接線方向に位置しているので、
連通管７５から回収タンク７０内へ流入した気流は円筒
部の内壁に沿って回りながら降下してゆく。回収タンク
７０の円錐部の下端は噴射ノズル３０から噴射する研磨
材の噴射量を調整する研磨材調整器１０を備え、この研
磨材調整器１０に噴射ノズル３０を連通している。一
方、回収タンク７０の上端壁面の略中央には連結管７４
が設けられ、この連結管７４は排出管６７を介してダス
トコレクタ６６に連通している。The recovery tank 70 is a so-called cyclone,
As shown in FIG. 2, the device for separating dust from abrasives comprises a cylindrical portion having a cylindrical shape in the upper portion and a conical portion having a conical shape that gradually narrows downward in the lower portion. An inlet 73 is provided on the upper side wall of the cylindrical portion of 70,
The front end of the conduit 65 is connected to the inflow port 73 via a communication pipe 75. Since the axial direction of the communication pipe 75 is located in the tangential direction of the inner wall surface forming the circular cross section of the cylindrical portion,
The airflow flowing from the communication pipe 75 into the recovery tank 70 descends while rotating along the inner wall of the cylindrical portion. The lower end of the conical portion of the recovery tank 70 is provided with an abrasive material adjuster 10 that adjusts the injection amount of the abrasive material injected from the injection nozzle 30, and the injection nozzle 30 is connected to this abrasive material adjuster 10. On the other hand, a connecting pipe 74 is provided at the substantially center of the upper wall surface of the recovery tank 70.
Is provided, and the connecting pipe 74 communicates with the dust collector 66 via the discharge pipe 67.
【００２０】ダストコレクタ６６は排風機６９を回転し
ダストコレクタ６６内の空気を外気へ放出している。こ
の排風機６９によりブラスト装置６０のキャビネット６
１、導管６５、回収タンク７０内の空気を吸引し、各部
がそれぞれ負圧になり、また図示せざる圧縮空気供給源
から供給された空気が研磨材と共に噴射ノズル３０から
噴射されるので、キャビネット６１から順に導管６５、
回収タンク７０、ダストコレクタ６６へ気流が流れる。The dust collector 66 rotates the exhaust fan 69 to discharge the air in the dust collector 66 to the outside air. This blower 69 allows the cabinet 6 of the blast device 60.
1, the air in the conduit 65 and the recovery tank 70 is sucked, each part becomes negative pressure, and the air supplied from the compressed air supply source (not shown) is sprayed from the spray nozzle 30 together with the abrasive material. Conduit 61 in order from 61,
The air flow flows to the recovery tank 70 and the dust collector 66.
【００２１】本発明のブラスト加工における研磨材供給
装置に係わる研磨材調整器１０のより詳細について、図
１を参照して説明すると、研磨材調整器１０は回収タン
ク７０（又は研磨材タンク）の下部に連通し、研磨材を
一定量収納する調整器本体１１を備えており、この調整
器本体１１の側壁には研磨材導入管１２が前記側壁を貫
通して設けられている。本実施例ではこの研磨材導入管
１２は円筒形状を成すものである。この研磨材導入管１
２の一端は開口（１３）されて調整器本体１１内に臨ん
でおり、この開口１３から前記調整器本体１１内の研磨
材が流入され研磨材導入管１２の他端側に流れる。研磨
材導入管１２の他端には前記研磨材の流れ方向前方に向
けて外周が小さくなるテーパを備えた延長連結管１６が
研磨材導入管１２と一体に螺着されている。なお、研磨
材導入管１２はこの延長連結管１６を一体成形したもの
であってもよい。また、研磨材導入管１２の内部、つま
り本実施例では延長連結管１６の内部には、延長連結管
１６内を流れる前記研磨材と後述する気体噴射管２１か
ら噴射された空気とが混合される研磨材混合室１４が備
えられている。この研磨材混合室１４内の研磨材と空気
の混合流体は延長連結管１６の他端側へ流れる。この延
長連結管１６の他端、すなわち前記混合流体の流れ方向
前方端は、研磨材供給管１９を介して噴射ノズル３０に
連通されている。なお、延長連結管１６は取替え可能で
あるので、研磨材混合室１４を長くあるいは短くするこ
とに有効である。The details of the abrasive material adjuster 10 relating to the abrasive material supply device in the blasting of the present invention will be described with reference to FIG. 1. The abrasive material adjuster 10 is the recovery tank 70 (or the abrasive material tank). An adjusting device main body 11 that communicates with the lower portion and stores a fixed amount of abrasive is provided, and an abrasive introducing pipe 12 is provided on a side wall of the adjusting device main body 11 so as to penetrate the side wall. In this embodiment, the abrasive material introducing tube 12 has a cylindrical shape. This abrasive material introduction pipe 1
One end of 2 is opened (13) to face the inside of the adjuster main body 11, and the abrasive in the adjuster main body 11 flows in through this opening 13 and flows to the other end of the abrasive introducer tube 12. At the other end of the abrasive material introducing pipe 12, an extension connecting pipe 16 having a taper whose outer circumference becomes smaller toward the front in the flow direction of the abrasive material is screwed integrally with the abrasive material introducing pipe 12. The abrasive introducing pipe 12 may be formed by integrally molding the extension connecting pipe 16. Further, in the inside of the abrasive material introducing pipe 12, that is, in the inside of the extension connecting pipe 16 in this embodiment, the abrasive flowing in the extension connecting pipe 16 and the air injected from the gas injection pipe 21 described later are mixed. A polishing material mixing chamber 14 is provided. The mixed fluid of the abrasive and the air in the abrasive mixture chamber 14 flows to the other end of the extension connecting pipe 16. The other end of the extension connecting pipe 16, that is, the front end in the flow direction of the mixed fluid is connected to the injection nozzle 30 via the abrasive supply pipe 19. Since the extension connecting pipe 16 can be replaced, it is effective to make the abrasive mixing chamber 14 longer or shorter.
【００２２】また、前記研磨材導入管１２を設けた調整
器本体１１の側壁の反対側の側壁には、図示せざるコン
プレッサ等の圧縮空気供給源から圧縮気体供給管２５を
介して供給された圧縮空気を前記研磨材導入管１２の開
口１３から研磨材混合室１４へ向けて噴射する気体噴射
管２１が前記側壁を貫通して設けられている。より詳し
くは、前記調整器本体１１の側壁には筒状を成す支持部
材１７が貫通して固定され、この支持部材１７の内周面
に前記気体噴射管２１が摺動可能に嵌挿されており、気
体噴射管２１は支持部材１７の内周面へ貫通するネジ穴
に螺合した調整ネジ１８の先端により摺動方向を位置決
めできるように調整自在に設けられている。この気体噴
射管２１の圧縮空気の噴射方向後方端には連結管２６を
介して圧縮気体供給管２５の先端を連結している。この
気体噴射管２１の先端部２３の内部にはノズル２２が形
成されており、前記先端部２３の外周面は圧縮空気の噴
射方向前方に向けて小さくなるテーパ部２３ａが形成さ
れている。本実施例では、このテーパ部２３ａは円錐形
状を成すものであり、このテーパ部２３ａはその一部が
上記の研磨材導入管１２の開口１３内に挿入され、テー
パ部２３ａと開口１３の内周との間で好ましくはほぼ均
等に間隙を形成するよう設けられている。この間隙は調
整器本体１１内の研磨材を研磨材導入管１２内に吸入し
導入する導入口１５であり、この導入口１５の間隙の大
きさは前記調整ネジ１８をゆるめて気体噴射管２１が支
持部材１７内で摺動して気体噴射管２１のテーパ部２３
ａが研磨材導入管１２の開口１３の内周に接近、又は離
反することにより調整されるよう構成されている。Further, the side wall opposite to the side wall of the regulator body 11 provided with the abrasive material introducing pipe 12 is supplied from a compressed air supply source such as a compressor (not shown) through a compressed gas supply pipe 25. A gas injection pipe 21 for injecting compressed air from the opening 13 of the abrasive introduction pipe 12 toward the abrasive mixing chamber 14 is provided through the side wall. More specifically, a cylindrical support member 17 is fixed to the side wall of the adjuster body 11 by penetrating it, and the gas injection pipe 21 is slidably inserted into the inner peripheral surface of the support member 17. The gas injection pipe 21 is provided so that the sliding direction can be adjusted by the tip of the adjusting screw 18 screwed into the screw hole penetrating to the inner peripheral surface of the support member 17. A front end of a compressed gas supply pipe 25 is connected to a rear end of the gas injection pipe 21 in the compressed air injection direction via a connection pipe 26. A nozzle 22 is formed inside the tip end portion 23 of the gas injection pipe 21, and a taper portion 23a is formed on the outer peripheral surface of the tip end portion 23 so as to become smaller toward the front in the injection direction of the compressed air. In the present embodiment, the taper portion 23a has a conical shape, and a part of the taper portion 23a is inserted into the opening 13 of the abrasive material introducing pipe 12 so that the inside of the taper portion 23a and the opening 13 is formed. It is provided so as to form a gap with the circumference preferably substantially evenly. This gap is an introduction port 15 for sucking and introducing the abrasive in the adjuster body 11 into the abrasive introducing pipe 12. The size of the gap of the introducing port 15 is such that the adjusting screw 18 is loosened and the gas injection pipe 21 is provided. Is slid in the support member 17 and the taper portion 23 of the gas injection pipe 21
It is configured so that a is adjusted by approaching or moving away from the inner circumference of the opening 13 of the abrasive introduction tube 12.
【００２３】さらに、気体噴射管２１の先端には筒状体
をなす誘導管２４が連結されており、この誘導管２４の
外周面と気体噴射管２１のテーパ部２３ａとは気流が円
滑に流れるように連なっている。誘導管２４は圧縮空気
の噴射流の方向性を一様に保つ働きをし、さらに、気体
噴射管２１の先端部２３並びに誘導管２４の外周面と研
磨材導入管１２の内周面との間で形成する研磨材誘導部
２７内で、研磨材の流れの方向性を研磨材導入管１２の
軸線方向に向ける働きをする。したがって、気体噴射管
２１の先端に誘導管２４を設けることにより、圧縮空気
の噴射流と研磨材の流れが共に整流されるため研磨材の
加速性がより一層高められる。なお、本実施例では圧縮
空気を用いて研磨材を噴射しているが、他の圧縮気体を
用いてもよい。Further, a guide pipe 24 having a cylindrical shape is connected to the tip of the gas injection pipe 21, and an air flow smoothly flows between the outer peripheral surface of the guide pipe 24 and the tapered portion 23a of the gas injection pipe 21. It is connected like this. The guide pipe 24 functions to keep the directionality of the jet flow of the compressed air uniform, and further, the tip portion 23 of the gas jet pipe 21 and the outer peripheral surface of the guide pipe 24 and the inner peripheral surface of the abrasive introduction pipe 12 are connected. In the abrasive guide portion 27 formed between them, it functions to direct the flow direction of the abrasive toward the axial direction of the abrasive introduction tube 12. Therefore, by providing the guide pipe 24 at the tip of the gas injection pipe 21, both the jet flow of the compressed air and the flow of the abrasive are rectified, so that the accelerating property of the abrasive is further enhanced. Although the abrasive is jetted using compressed air in this embodiment, other compressed gas may be used.
【００２４】本発明のブラスト加工における研磨材供給
装置に係わる噴射ノズル３０のより詳細について、図１
を参照して説明すると、噴射ノズル３０は上記の研磨材
調整器１０の研磨材導入管１２の前方端（本実施例では
延長連結管１６の混合流体の流れ方向前方端）に研磨材
供給管１９を介して連通される。噴射ノズル３０を構成
するノズルボディ３１は略円筒形状を成しており、ノズ
ルボディ３１の後端には内周に設けたネジ部に連結管３
２が螺着され、この連結管３２に前記研磨材供給管１９
の先端が外嵌されて連結されている。一方、連結管３２
の先端部には円錐状に絞られた円錐内面３４が形成され
たノズル３３が設けられている。このノズル３３はその
外周にテーパ部３６が設けられている。また、ホルダ３
５は内周面にテーパ部３７を備えた円筒形状をなしてお
り、ホルダ３５の前記テーパ部３７で前記ノズル３３の
外周のテーパ部３６が外嵌され、ホルダ３５の外周に設
けたネジ部３８でノズルボディ３１に螺着することによ
りノズル３３がノズルボディ３１に固定される。More detailed description of the injection nozzle 30 relating to the abrasive material supplying device in the blast processing of the present invention is shown in FIG.
Referring to FIG. 3, the injection nozzle 30 is provided at the front end of the abrasive material introduction pipe 12 of the abrasive material adjuster 10 (in this embodiment, at the front end of the extension connecting pipe 16 in the flow direction of the mixed fluid). It is communicated via 19. A nozzle body 31 that constitutes the injection nozzle 30 has a substantially cylindrical shape, and a threaded portion provided on the inner periphery at the rear end of the nozzle body 31 is connected to the connecting pipe 3.
2 is screwed into the connecting pipe 32, and the abrasive supply pipe 19 is attached to the connecting pipe 32.
Is fitted and connected to the outside. On the other hand, the connecting pipe 32
A nozzle 33 having a conical inner surface 34 that is conically narrowed is provided at the tip of the nozzle 33. The nozzle 33 is provided with a tapered portion 36 on the outer circumference thereof. Also, the holder 3
Reference numeral 5 denotes a cylindrical shape having a taper portion 37 on the inner peripheral surface, and the taper portion 37 of the holder 35 is externally fitted to the taper portion 36 of the outer periphery of the nozzle 33 to form a screw portion provided on the outer periphery of the holder 35. The nozzle 33 is fixed to the nozzle body 31 by being screwed onto the nozzle body 31 at 38.
【００２５】上述したブラスト装置６０と、このブラス
ト装置に装着した本発明の研磨材供給装置の作用につい
て説明すると、回収タンク７０（図２）内の研磨材は回
収タンク７０の下端に連通した研磨材調整器１０の調整
器本体１１内に落下している。図１において、図示せざ
る圧縮空気供給源からの圧縮空気が圧縮気体供給管２５
を経て気体噴射管２１の後端側に供給されると、この圧
縮空気は気体噴射管２１の先端部のノズル２２で加速さ
れて前方の誘導管２４を経て研磨材導入管１２の延長連
結管１６内の研磨材混合室１４に噴射される。本実施例
では圧縮空気を使用しているが、他の気体であってもよ
い。この圧縮空気の噴射流（以下、単に「噴射流」とい
う）により誘導管２４の先端から後方の導入口１５まで
の研磨材誘導部２７は負圧になるために調整器本体１１
内の研磨材が導入口１５および研磨材誘導部２７を経て
研磨材混合室１４内へ吸引され導入される。この導入さ
れた研磨材混合室１４の研磨材は気体噴射管２１から後
続する噴射流の空気と混合されながら混合流体となって
前記噴射流により加速されて研磨材混合室１４から前方
の研磨材供給管１９内へ流れる。研磨材供給管１９が一
般的に６００〜１０００ｍｍと長いので混合流体内の研
磨材は噴射流により充分に加速されて研磨材供給管１９
の前方端の噴射ノズル３０へ給送される。したがって、
使用される研磨材がハイスビーズ（比重８．０）のよう
に重い研磨材の場合であっても、この重い研磨材は長い
研磨材供給管１９内で噴射流により充分に加速されて噴
射ノズル３０へ給送されるものである。噴射ノズル３０
では研磨材供給管１９内を加速された研磨材が連結管３
２からノズルボディ３１内に導入され、前方の円錐内面
３４及びノズル３３で絞られてより一層加速されノズル
３３の先端から被加工物に向けて高速で噴射される。The operation of the above-described blasting device 60 and the abrasive material supplying device of the present invention mounted on the blasting device will be described. The abrasive material in the recovery tank 70 (FIG. 2) is a polishing material communicating with the lower end of the recovery tank 70. It has fallen into the adjuster body 11 of the material adjuster 10. In FIG. 1, compressed air from a compressed air supply source (not shown) is compressed gas supply pipe 25.
When the compressed air is supplied to the rear end side of the gas injection pipe 21 via the nozzle, the compressed air is accelerated by the nozzle 22 at the tip of the gas injection pipe 21 and passes through the front guide pipe 24 to extend the connecting pipe of the abrasive material introducing pipe 12. It is sprayed into the abrasive mixing chamber 14 in 16. Although compressed air is used in this embodiment, other gas may be used. Due to the jet flow of compressed air (hereinafter, simply referred to as “jet flow”), the abrasive material guide portion 27 from the tip of the guide tube 24 to the rear introduction port 15 becomes negative pressure, and thus the regulator body 11 is provided.
The abrasive material therein is sucked and introduced into the abrasive material mixing chamber 14 through the introduction port 15 and the abrasive material guide portion 27. The introduced abrasive in the abrasive mixture chamber 14 becomes a mixed fluid while being mixed with the air of the jet stream following from the gas jet pipe 21 and is accelerated by the jet stream, and the abrasive in front of the abrasive mixture chamber 14 is mixed. It flows into the supply pipe 19. Since the abrasive material supply pipe 19 is generally as long as 600 to 1000 mm, the abrasive material in the mixed fluid is sufficiently accelerated by the jet flow and the abrasive material supply pipe 19 is
Is fed to the injection nozzle 30 at the front end of the. Therefore,
Even when the abrasive used is a heavy abrasive such as HSS beads (specific gravity 8.0), the heavy abrasive is sufficiently accelerated by the jet flow in the long abrasive supply pipe 19 and is injected into the jet nozzle. It is sent to 30. Injection nozzle 30
Then, in the abrasive supply pipe 19, the accelerated abrasive is the connecting pipe 3
It is introduced into the nozzle body 31 from 2 and is squeezed by the front conical inner surface 34 and the nozzle 33 to be further accelerated and jetted at a high speed from the tip of the nozzle 33 toward the workpiece.
【００２６】上述したように噴射ノズル３０から噴射さ
れた研磨材は、被加工物に衝突したときの衝撃で被加工
物の表面から剥離した破片や破砕した再使用不可能な研
磨材や他の塵埃を含む粉塵が発生し再使用可能な研磨材
中に混入する。噴射された研磨材およびこのとき発生し
た粉塵は、キャビネット６１の下部のホッパ６８に落下
し、導管６５内に生じている気流によって導管６５を経
て流入口７３から回収タンク７０へ送られる。流入口７
３から流入した気流は回転気流となって遠心力により円
筒部の内壁面に沿って回りながら降下し、円錐部へ到達
すると、円錐部は下方へ向けて徐々に狭くなっているの
で、気流の回転半径が小さくなり、それに伴って回転速
度が徐々に大きくなりながら降下する。研磨材と粉塵は
気流に乗って降下する。気流は円錐部の下端近くに達す
ると、反転して方向転換し上昇気流となり回収タンク７
０の中心部を小さく回転しながら上昇し、回収タンク７
０の上端壁の連結管７４から排出管６７を経てダストコ
レクタ６６へ流れる。しかし、前記回転気流に乗って円
錐部の下端近くに降下した研磨材と粉塵のうち粉塵のみ
が方向転換し上昇気流に乗って上昇するが、研磨材は上
昇せず円錐部の下部で回転気流と共に旋回し、徐々に回
収タンク７０の下部に落下し集積される。一方、粉塵は
前記上昇気流と共に連結管７４から排出管６７を経てダ
ストコレクタ６６へ送られてダストコレクタ６６に集積
され、清浄な空気がダストコレクタ６６の上部に設けら
れた排風機６９から放出される。As described above, the abrasive material sprayed from the spray nozzle 30 is a piece that is separated from the surface of the workpiece due to the impact when it collides with the workpiece, a crushed abrasive that cannot be reused, or another Dust, including dust, is generated and mixes into the reusable abrasive. The sprayed abrasive and the dust generated at this time fall into the hopper 68 in the lower part of the cabinet 61, and are sent from the inflow port 73 to the recovery tank 70 via the conduit 65 by the air flow generated in the conduit 65. Inlet 7
The airflow flowing in from 3 becomes a rotating airflow and descends while rotating along the inner wall surface of the cylindrical portion by the centrifugal force, and when reaching the conical portion, the conical portion is gradually narrowed downward, The radius of gyration becomes smaller, and as a result, the rotational speed gradually increases while descending. Abrasives and dust fall in the airflow. When the airflow reaches near the lower end of the conical portion, it reverses and changes direction and becomes an ascending airflow.
The recovery tank 7
0 from the upper end wall of the connecting pipe 74 to the dust collector 66 through the discharge pipe 67. However, only the dust of the abrasive and dust that has fallen near the lower end of the conical portion due to the rotating airflow changes its direction and rises in the ascending airflow, but the abrasive does not rise and the rotating airflow occurs at the lower part of the conical portion. It turns with it and gradually falls to the lower part of the recovery tank 70 to be accumulated. On the other hand, the dust is sent from the connecting pipe 74 through the exhaust pipe 67 to the dust collector 66 and accumulated in the dust collector 66 together with the ascending air current, and clean air is discharged from the exhaust fan 69 provided above the dust collector 66. It
【００２７】〔ブラスト加工の比較例〕上述したブラス
ト装置６０を用いて、本発明の研磨材供給装置を装着し
た場合と、前述した従来例の研磨材供給装置を装着した
場合とを、同一のブラスト加工条件で、研磨材を各噴射
ノズルより被加工物の表面へ噴射してブラスト加工を行
った。[Comparative Example of Blasting] The case in which the abrasive material supply device of the present invention is mounted using the above-mentioned blasting device 60 and the case in which the abrasive material supply device of the conventional example described above is mounted are the same. Under the blasting conditions, the abrasive was jetted from each jet nozzle onto the surface of the workpiece to perform the blasting.
【００２８】表１、表２にはそれぞれ本願例のブラスト
加工条件を示し、従来例のブラスト加工条件については
省略し、本願例と従来例の被加工物の結果を表３に示し
た。Tables 1 and 2 show the blasting conditions of the example of the present invention, omitting the blasting conditions of the conventional example, and Table 3 shows the results of the workpieces of the present example and the conventional example.
【００２９】[0029]
【表１】 [Table 1]
【００３０】[0030]
【表２】 [Table 2]
【００３１】[0031]
【表３】 [Table 3]
【００３２】上記の比較例からわかるように、アークハ
イトでは、軽い研磨材のときは本願例の方が従来例より
０．００５Ｎほど大きく、重い研磨材のときは本願例が
従来例より０．０１０Ｎほど大きい。これは本願例の噴
射力が従来例より大きいことを顕著に示している。しか
も、研磨材が重いときの方が軽いときより、本願の効果
性がより一層顕著にあらわれている。これは、重い研磨
材は軽い研磨材よりも加速するまでに時間と距離を多く
必要とするので従来例ではその時間と距離を充分にとる
ことができなかったが、本願例では研磨材を加速するた
めの距離が充分にあるので上記のような顕著な結果とし
て表れたものと考えられる。As can be seen from the above comparative example, the arc height of the present invention is about 0.005 N larger than that of the conventional example in the case of a light abrasive, and the present example is less than that of the conventional example in the case of a heavy abrasive. It is as large as 010N. This clearly shows that the injection force of the present application example is larger than that of the conventional example. Moreover, the effect of the present invention is more remarkable when the abrasive is heavy than when it is light. This is because the heavy abrasive material requires more time and distance to accelerate than the light abrasive material, so that the time and distance could not be sufficiently taken in the conventional example, but in the present application example, the abrasive material is accelerated. Since there is a sufficient distance to do so, it is considered that the above remarkable results are exhibited.
【００３３】なお、ア−クハイトとは、ある一定の弦長
Ｃに対するキャンバｈで表すと、ブラストの吹きつけ時
間とキャンバとの関係は、ある時間経過後はそれ以上変
化しなくなる。このときのｈの値をア−クハイトと称
し、このア−クハイトの大きさでブラスト加工の効果判
定の尺度とするものである。本願例及び従来例ではそれ
ぞれ、板厚約０．８ｍｍ，大きさ約１９×７６．２mm、
材料ＳＡＥ１０７０（冷間圧延のバネ鋼）の試験片Ｎ
（Ｎ試験片と称される。）に対してブラスト加工し、こ
の試験片Ｎのア−クハイトｈをアルメンＮｏ．２ゲ−ジ
で測定したものである。なお、アルメンＮｏ．２の弦長
Ｃは１．２４８〜１．２５２in（３１．７０〜３１．８
０mm）である。また、上記の表３のア−クハイトｈの単
位は、mmに相当する。したがって、例えば、０．０８５
Ｎとはｈの値が０．０８５mmで、０．１１０Ｎとはｈの
値が０．１１０mmということになる。また、上述したよ
うに本願例の方が従来例に比べて噴射力が高くなるの
で、本願例の加工能率は必然的に向上する。上記の表３
に示されているように、軽い研磨材のとき、本願例の加
工能率は従来例に対して６．２５％増加しており、重い
研磨材のとき、本願例が従来例より１０．０％増加して
いる。When the arc height is represented by a camber h with respect to a certain chord length C, the relationship between the blasting time and the camber does not change after a certain time. The value of h at this time is called an arc height, and the size of this arc height is used as a scale for determining the effect of blasting. In the present application example and the conventional example, respectively, the plate thickness is about 0.8 mm, the size is about 19 × 76.2 mm,
Test piece N of material SAE1070 (cold rolled spring steel)
(Referred to as N test piece) is blasted, and the arc height h of this test piece N is set to Almen No. It is measured by 2 gauges. Almen No. The chord length C of 2 is 1.248 to 1.252 in (31.70 to 31.8)
0 mm). The unit of the arc height h in Table 3 above corresponds to mm. Therefore, for example, 0.085
N means that the value of h is 0.085 mm, and that of 0.110 N means that the value of h is 0.110 mm. Further, as described above, the jetting force of the present example is higher than that of the conventional example, so that the machining efficiency of the present example is inevitably improved. Table 3 above
As shown in Fig. 2, the processing efficiency of the present application example increased by 6.25% with respect to the conventional example when the light abrasive was used, and 10.0% when the heavy abrasive was used, compared with the conventional example. It has increased.
【００３４】また、本願では噴射ノズル３０には研磨材
供給管のみが必要で、圧縮空気供給管は不要であるので
従来と比較して噴射ノズルが軽くなる。そのために噴射
ノズル３０が扱い易くなり、操作性が良くなるので作業
能率の向上に寄与する。Further, in the present application, only the abrasive material supply pipe is required for the injection nozzle 30 and the compressed air supply pipe is not required, so the injection nozzle is lighter than the conventional one. Therefore, the injection nozzle 30 is easy to handle and the operability is improved, which contributes to the improvement of work efficiency.
【００３５】[0035]
【発明の効果】本発明は、以上説明したように構成され
ているので、以下に記載されるような効果を奏する。Since the present invention is configured as described above, it has the following effects.
【００３６】（１）研磨材調整器内の研磨材は、調整器
本体に設けた気体噴射管からの気体の噴射流により研磨
材導入管内に生じた負圧によって、導入口から研磨材導
入管の研磨材混合室内へ吸引され、この研磨材混合室内
の研磨材は気体噴射管からの気体の噴射流で混合され且
つ加速される。この研磨材と気体との混合流体は、研磨
材導入管から長い研磨材供給管内で充分に加速されなが
ら噴射ノズルへ供給される。したがって、本発明の研磨
材供給装置は従来例と比較して研磨材の噴射力を向上さ
せることができたので、ブラスト加工能率が向上し、コ
ストダウンを図ることができた。(1) The abrasive material in the abrasive material adjuster is supplied from the introduction port to the abrasive material introduction pipe by the negative pressure generated in the abrasive material introduction pipe by the jet flow of gas from the gas injection pipe provided in the adjuster body. Is sucked into the abrasive mixture chamber, and the abrasive in the abrasive mixture chamber is mixed and accelerated by the gas jet flow from the gas jet pipe. The mixed fluid of the abrasive and the gas is supplied from the abrasive introduction pipe to the injection nozzle while being sufficiently accelerated in the long abrasive supply pipe. Therefore, the abrasive material supply device of the present invention was able to improve the ejection force of the abrasive material as compared with the conventional example, so that the blasting efficiency was improved and the cost could be reduced.
【００３７】（２）なお、研磨材と気体との混合流体
は、気体噴射管の噴射流により研磨材導入管から長い研
磨材供給管内で充分に加速されるために、重い研掃材で
あっても充分に加速されて噴射ノズルに送給されるので
研磨材の噴射力を向上させることができた。したがっ
て、従来例に比較すると重い研磨材ほど加工能率を向上
できた。(2) Since the mixed fluid of the abrasive and the gas is sufficiently accelerated in the long abrasive supply pipe from the abrasive introduction pipe by the jet flow of the gas injection pipe, it is a heavy polishing and cleaning material. However, it was possible to improve the jetting force of the abrasive because it was sufficiently accelerated and fed to the jetting nozzle. Therefore, as compared with the conventional example, the heavier the abrasive, the higher the processing efficiency could be.
【００３８】（３）噴射ノズルには、研磨材供給管の１
本のみが必要であり、圧縮空気供給管は不要であるので
従来と比較して噴射ノズルが大幅に軽くなり、小型化を
図ることができた。そのために噴射ノズルが扱い易くな
り、操作性が良くなるので作業能率の向上に寄与するも
のとなった。(3) The injection nozzle is provided with one of the abrasive supply pipes.
Since only the book is required and the compressed air supply pipe is not required, the injection nozzle is significantly lighter than the conventional one, and the size can be reduced. Therefore, the injection nozzle is easy to handle and the operability is improved, which contributes to the improvement of work efficiency.
【００３９】（４）気体噴射管の先端には筒状体をなす
誘導管を設け、この誘導管の外周面と研磨材導入管の内
周面との間で研磨材誘導部を形成したから、この誘導管
は気体の噴射流の方向性を一様に保つ働きをし、前記研
磨材誘導部で研磨材の流れを研磨材導入管の軸線方向に
向ける働きをするので、噴射流と研磨材の流れが共に整
流されるため研磨材の加速性を高めることができた。(4) Since a guide pipe having a cylindrical shape is provided at the tip of the gas injection pipe, and the abrasive guide portion is formed between the outer peripheral surface of the guide pipe and the inner peripheral surface of the abrasive guide pipe. , This guide tube functions to keep the directionality of the jet flow of gas uniform, and to direct the flow of the abrasive in the abrasive guide portion in the axial direction of the abrasive introduction pipe, so that the jet flow and the polishing Since the flow of the material was rectified together, the accelerating property of the abrasive could be improved.
【図１】本発明の実施例を示す研磨材供給装置の要部断
面図である。FIG. 1 is a sectional view of an essential part of an abrasive material supply device showing an embodiment of the present invention.
【図２】本発明の実施例に使用するエア式重力式ブラス
ト装置を示す正面図である。FIG. 2 is a front view showing an air gravity blast device used in an embodiment of the present invention.
【図３】本発明の実施例に使用するエア式重力式ブラス
ト装置を示す側面図である。FIG. 3 is a side view showing an air gravity blast device used in an embodiment of the present invention.
【図４】従来の実施例を示す研磨材供給装置の要部断面
図である。FIG. 4 is a cross-sectional view of essential parts of an abrasive material supply device showing a conventional example.
１０ 研磨材調整器 １１ 調整器本体 １２ 研磨材導入管 １３ 開口 １４ 研磨材混合室 １５ 導入口 １６ 延長連結管 １７ 支持部材 １８ 調整ネジ １９ 研磨材供給管 ２１ 気体噴射管 ２２ ノズル ２３ 先端部 ２４ 誘導管 ２５ 圧縮気体供給管 ２６ 連結管 ２７ 研磨材誘導部 ３０ 噴射ノズル ３１ ノズルボディ ３２ 連結管 ３３ ノズル ３４ 円錐内面 ３５ ホルダ ３６ テーパ部 ３７ テーパ部 ３８ ネジ部 ６０ ブラスト装置 ６１ キャビネット ６３ 回収タンク ６４ ダストコレクタ ６５ 導管 ６６ ダストコレクタ ６７ 排出管 ６８ ホッパ ６９ 排風機 ７０ 回収タンク ７３ 流入口 ７４ 連結管 ７５ 連通管 １１０ 噴射ノズル １１１ ノズルボディ １１２ 研磨材誘導室 １１３ 空気噴射管 １１４ ノズル １１５ ホルダ １１６ 円錐内面 １１７ 研磨材導入口 １１８ 研磨材供給管 １１９ 圧縮空気供給管 １２０ 研磨材調整器 １２１ 本体（研磨材調整器１２０の） １２２ 第１サクションパイプ １２３ 第２サクションパイプ １２４ 先端部 １２５ 開口 １２６ 空気噴射管カバー １２７ ネジ 10 Abrasive Material Adjuster 11 Adjuster Main Body 12 Abrasive Material Introducing Pipe 13 Opening 14 Abrasive Mixing Chamber 15 Inlet 16 Extension Connection Pipe 17 Supporting Member 18 Adjusting Screw 19 Abrasive Supply Pipe 21 Gas Injection Pipe 22 Nozzle 23 Tip 24 Pipe 25 Compressed gas supply pipe 26 Connection pipe 27 Abrasive guide part 30 Injection nozzle 31 Nozzle body 32 Connection pipe 33 Nozzle 34 Conical inner surface 35 Holder 36 Tapered part 37 Tapered part 38 Screw part 60 Blast device 61 Cabinet 63 Recovery tank 64 Dust collector 65 conduit 66 dust collector 67 exhaust pipe 68 hopper 69 exhaust fan 70 recovery tank 73 inflow port 74 connection pipe 75 communication pipe 110 injection nozzle 111 nozzle body 112 abrasive material induction chamber 113 air injection pipe 114 nozzle 115 holder 116 conical inner surface 117 Abrasive material introduction port 118 Abrasive material supply pipe 119 Compressed air supply pipe 120 Abrasive material adjuster 121 Main body (of abrasive material adjuster 120) 122 First suction pipe 123 Second suction pipe 124 Tip portion 125 Opening 126 Air injection pipe cover 127 screw
Claims (6)
この噴射ノズルに研磨材を給送する研磨材供給管を介し
て研磨材を一定量収納する研磨材調整器を備え、 前記研磨材調整器に連通する研磨材導入管の開口内に、
圧縮気体供給源に連通した気体噴射管の先端部を挿入
し、この気体噴射管の先端部から前記研磨材導入管内へ
圧縮気体を噴射することにより、研磨材調整器内の研磨
材を、気体噴射管の先端部と研磨材導入管の開口との間
で形成した導入口から研磨材導入管内へ導入して気体と
研磨材とを混合し、この混合流体を前記研磨材導入管に
連結した研磨材供給管を介して加速し噴射ノズルに供給
することを特徴とするブラスト装置における研磨材供給
方法。1. An injection nozzle for injecting compressed gas,
An abrasive material adjuster that stores a certain amount of abrasive material through an abrasive material supply pipe that supplies the abrasive material to the injection nozzle is provided, and in the opening of the abrasive material introducing pipe that communicates with the abrasive material adjuster,
Insert the tip of the gas injection pipe in communication with the compressed gas supply source, and inject the compressed gas from the tip of the gas injection pipe into the abrasive introduction pipe, the abrasive in the abrasive adjuster, gas The abrasive and the abrasive were mixed by introducing the abrasive and the abrasive into the abrasive introducer through the inlet formed between the tip of the injection pipe and the opening of the abrasive introducer, and the mixed fluid was connected to the abrasive introducer. A method of supplying abrasives in a blasting device, characterized by accelerating via an abrasives supply pipe and supplying the same to an injection nozzle.
この噴射ノズルに研磨材を給送する研磨材供給管を介し
て研磨材を一定量収納する研磨材調整器を備え、 前記研磨材調整器の調整器本体に、該調整器本体内の研
磨材が流入する開口を備え且つ内部に気体と研磨材を混
合する研磨材混合室を備えた研磨材導入管を設け、この
研磨材導入管の前記開口内に圧縮気体供給源に連通する
気体噴射管の先端部を挿入し、この気体噴射管の先端部
と研磨材導入管の開口との間で研磨材を導入する導入口
を形成すると共に、前記研磨材導入管の研磨材混合室側
を研磨材供給管を介して噴射ノズルに連通してなること
を特徴とするブラスト装置における研磨材供給装置。2. An injection nozzle for injecting compressed gas,
An abrasive material adjuster for storing a fixed amount of the abrasive material via an abrasive material supply pipe for feeding the abrasive material to the injection nozzle is provided, and the adjuster body of the abrasive material adjuster includes an abrasive material in the adjuster body. Is provided with an opening through which an abrasive flows in and an abrasive mixing chamber that mixes a gas and an abrasive inside, and a gas injection tube communicating with a compressed gas supply source is provided in the opening of the abrasive introducing tube. The tip of the gas injection pipe and an opening for introducing the abrasive between the tip of the gas injection pipe and the opening of the abrasive introducing pipe, and polishing the abrasive mixing chamber side of the abrasive introducing pipe. An abrasive material supply device in a blasting device, characterized in that it is connected to an injection nozzle via a material supply pipe.
この噴射ノズルに研磨材を給送する研磨材供給管を介し
て研磨材を一定量収納する研磨材調整器を備え、 前記研磨材調整器の調整器本体に、該調整器本体内の研
磨材が流入する開口を備え且つ内部に気体と研磨材を混
合する研磨材混合室を備えた研磨材導入管を設け、この
研磨材導入管の前記開口内に圧縮気体供給源に連通する
気体噴射管の先端部を挿入し、この気体噴射管の先端部
と研磨材導入管の開口との間で研磨材を導入する導入口
を形成すると共に、前記研磨材導入管の研磨材混合室側
を研磨材供給管を介して噴射ノズルに連通し、前記噴射
ノズルは、研磨材と気体の混合流体を導入するノズルボ
ディと、前記混合流体の流れ方向前方に設けたノズルと
からのみでなることを特徴とする研磨材供給装置を備え
たブラスト装置。3. An injection nozzle for injecting compressed air,
An abrasive material adjuster for storing a fixed amount of the abrasive material via an abrasive material supply pipe for feeding the abrasive material to the injection nozzle is provided, and the adjuster body of the abrasive material adjuster includes an abrasive material in the adjuster body. Is provided with an opening through which an abrasive flows in and an abrasive mixing chamber that mixes a gas and an abrasive inside, and a gas injection tube communicating with a compressed gas supply source is provided in the opening of the abrasive introducing tube. The tip of the gas injection pipe and an opening for introducing the abrasive between the tip of the gas injection pipe and the opening of the abrasive introducing pipe, and polishing the abrasive mixing chamber side of the abrasive introducing pipe. It is communicated with an injection nozzle through a material supply pipe, and the injection nozzle is composed only of a nozzle body for introducing a mixed fluid of an abrasive and a gas, and a nozzle provided on the front side in the flow direction of the mixed fluid. A blasting device equipped with an abrasive material supplying device.
の開口とを接近、離反自在に形成して導入口の間隔を調
整可能に設けてなる請求項２記載のブラスト装置におけ
る研磨材供給装置。4. The abrasive in a blasting apparatus according to claim 2, wherein the tip of the gas injection pipe and the opening of the abrasive introduction pipe are formed so as to be close to and away from each other so that the distance between the introduction ports can be adjusted. Supply device.
先端に向けて小さくなるテーパ部を形成し、このテーパ
部が研磨材導入管の開口の内周に接近、離反可能に形成
されてなる請求項４記載のブラスト装置における研磨材
供給装置。5. The gas injection pipe is formed with a taper portion having an outer periphery of a tip end portion which becomes smaller toward a tip end, and the taper portion is formed so as to be able to approach and separate from an inner periphery of an opening of an abrasive introduction pipe. The abrasive material supplying device in the blasting device according to claim 4.
誘導管を連結し、この誘導管の外周面と研磨材導入管の
内周面との間で研磨材誘導部を形成してなる請求項２記
載のブラスト装置における研磨材供給装置。6. A guide pipe having a tubular shape is connected to the tip of the gas injection pipe, and an abrasive guide portion is formed between the outer peripheral surface of the guide pipe and the inner peripheral surface of the abrasive guide pipe. The abrasive material supplying device in the blasting device according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5189596A JPH09248764A (en) | 1996-03-08 | 1996-03-08 | Abrasive supplying method in blasting device, abrasive supplying device, and blasting device provided with abrasive supplying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5189596A JPH09248764A (en) | 1996-03-08 | 1996-03-08 | Abrasive supplying method in blasting device, abrasive supplying device, and blasting device provided with abrasive supplying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09248764A true JPH09248764A (en) | 1997-09-22 |
Family
ID=12899622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5189596A Pending JPH09248764A (en) | 1996-03-08 | 1996-03-08 | Abrasive supplying method in blasting device, abrasive supplying device, and blasting device provided with abrasive supplying device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09248764A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101524648B1 (en) * | 2008-04-23 | 2015-06-01 | 신토고교 가부시키가이샤 | Nozzle, nozzle unit, and blasting machine |
| CN111781079A (en) * | 2020-07-21 | 2020-10-16 | 山东开泰抛丸机械股份有限公司 | Novel abrasive material performance test testing machine |
-
1996
- 1996-03-08 JP JP5189596A patent/JPH09248764A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101524648B1 (en) * | 2008-04-23 | 2015-06-01 | 신토고교 가부시키가이샤 | Nozzle, nozzle unit, and blasting machine |
| CN111781079A (en) * | 2020-07-21 | 2020-10-16 | 山东开泰抛丸机械股份有限公司 | Novel abrasive material performance test testing machine |
| CN111781079B (en) * | 2020-07-21 | 2023-08-25 | 山东开泰抛丸机械股份有限公司 | Abrasive material performance test machine |
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