JP4097270B2 - Sandblast mask device - Google Patents

Sandblast mask device Download PDF

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JP4097270B2
JP4097270B2 JP2004138068A JP2004138068A JP4097270B2 JP 4097270 B2 JP4097270 B2 JP 4097270B2 JP 2004138068 A JP2004138068 A JP 2004138068A JP 2004138068 A JP2004138068 A JP 2004138068A JP 4097270 B2 JP4097270 B2 JP 4097270B2
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mask
support member
elastic support
engagement
peripheral edge
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JP2005319524A (en
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芳章 江川
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江川製作所株式会社
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Description

この発明は、例えば自動車の窓ガラスのような平滑な施工面に、刻印を施すためのサンドブラスト装置に使用されるマスク装置に関するものである。   The present invention relates to a mask device used in a sandblasting device for marking a smooth construction surface such as a window glass of an automobile.

自動車の窓ガラスに刻印を施すためのサンドブラスト装置に使用される従来のマスク装置を図11に示す。マスク装置81は、サンドブラスト装置におけるノズル91を包囲する外筒92の先端に取り付けられるもので、刻印すべき形状に対応する形状の開口を備えた円盤状の金属製マスク本体82と、このマスク本体82の外周縁を外筒92の先端に固定するための固定リング83とからなる。固定リング83は、サンドブラスト装置の外筒92の先端にボルトで固定される。
刻印対象であるガラス板Gは、搬送装置94でサンドブラスト装置上に搬送され、位置決め台座93の上に置かれる。このときマスク本体82とガラス板Gの刻印面との間に所定の微小間隔が形成されるように、予め外筒92と台座93の相対位置が調整される。ノズル91から研磨材が噴射され、マスク本体82の開口を介してガラス板Gに衝突した研磨材によって刻印が形成される。
このような従来のマスク装置においては、マスク本体82の交換時に、これをサンドブラスト装置の外筒92に対して着脱するのに、研磨材や研磨粉にまみれた悪環境下でのボルトの着脱作業を要するため、多大の作業時間と労力がかかるという問題点がある。
刻印される文字等の「ボケ」を防ぐためには、ガラス板Gとマスク本体82とを可及的に接近させ強固に位置固定をするのが好都合であるが、その一方、研磨材の粒子や硬いゴミがマスク本体82とガラス板Gとの間に介在している状態でガラス板Gとマスク本体82を強固に位置固定しようとすると、研磨材の粒子や硬いゴミがガラス板Gに傷をつけてしまうという不具合がある。この不都合を解消するためにマスク本体82とガラス板Gの刻印面との間に所定の微小間隔が形成されるが、この微小な位置調整や徹底した清掃には手間とコストを要する難点がある。
上記のような従来の技術を開示する特許文献、非特許文献は、出願人の調査の限りにおいて存在しない。
なお、石碑に銘文を刻印するためのサンドブラスト機が特許文献1に記載されている。このサンドブラスト機においては、厚さ約1〜2mmのゴム板に、石碑の銘文に刻印すべき所望の文字等輪郭を切り抜いた開口を有するゴム板を石碑に位置決めして重ね合わせて固定する。サンドブラスト機から送られた高圧の研磨粉は、噴射ホースを通って、ノズルチップの先端部から噴射される。石碑の表面では、ゴム板で保護されていない部分、すなわち、ゴム板の切り抜かれた開口部分に対応する部分だけが、高圧の研磨粉によって削り取られる。そして、研磨粉およびこの研磨粉によって発生した石粉は、集塵ブラシによって、その内部に留まり、排出口に接続された集塵ホースで吸引され、集塵装置に集塵される。
マスク本体として、特許文献1に記載されるような柔軟なゴム板を用いれば、その柔軟な変形により、ガラスの傷付きをある程度防止できるが、ゴム板は研磨材により摩耗されやすく頻繁な交換を要する難点がある。
特開平11−198042号公報
FIG. 11 shows a conventional mask device used in a sandblasting device for marking car window glass. The mask device 81 is attached to the tip of an outer cylinder 92 that surrounds the nozzle 91 in the sandblasting device. The mask-shaped metal mask body 82 having an opening having a shape corresponding to the shape to be engraved, and the mask body And a fixing ring 83 for fixing the outer peripheral edge of 82 to the tip of the outer cylinder 92. The fixing ring 83 is fixed to the front end of the outer cylinder 92 of the sandblasting device with a bolt.
The glass sheet G to be engraved is transported onto the sandblasting device by the transporting device 94 and placed on the positioning pedestal 93. At this time, the relative positions of the outer cylinder 92 and the pedestal 93 are adjusted in advance so that a predetermined minute interval is formed between the mask main body 82 and the marking surface of the glass plate G. Abrasive material is sprayed from the nozzle 91, and a stamp is formed by the abrasive material that has collided with the glass plate G through the opening of the mask main body 82.
In such a conventional mask device, when the mask main body 82 is replaced, the bolt is attached / detached in an adverse environment covered with abrasives or polishing powder to be attached / detached to / from the outer cylinder 92 of the sandblast device. Therefore, there is a problem that much work time and labor are required.
In order to prevent “blurring” of characters or the like that are engraved, it is convenient to bring the glass plate G and the mask body 82 as close as possible and firmly fix the position. If hard dust is interposed between the mask body 82 and the glass plate G and the glass plate G and the mask body 82 are firmly positioned, the abrasive particles and the hard dust may damage the glass plate G. There is a problem of wearing it. In order to eliminate this inconvenience, a predetermined minute interval is formed between the mask main body 82 and the engraved surface of the glass plate G. However, this minute position adjustment and thorough cleaning have a drawback that requires labor and cost. .
There is no patent document or non-patent document disclosing the conventional technique as described above as far as the applicant's investigation.
A sandblasting machine for inscription on a stone monument is described in Patent Document 1. In this sandblasting machine, a rubber plate having an opening cut out from the outline of a desired character to be engraved on the inscription of the monument is positioned on the monument and overlapped and fixed on a rubber plate having a thickness of about 1 to 2 mm. The high-pressure abrasive powder sent from the sandblasting machine is jetted from the tip of the nozzle tip through the jet hose. On the surface of the stone monument, only the portion not protected by the rubber plate, that is, the portion corresponding to the cut-out opening portion of the rubber plate is scraped off by the high-pressure polishing powder. The polishing powder and the stone powder generated by the polishing powder remain inside the dust collecting brush, are sucked by the dust collecting hose connected to the discharge port, and are collected by the dust collecting device.
If a flexible rubber plate as described in Patent Document 1 is used as the mask body, the glass can be prevented from being damaged to some extent by its flexible deformation, but the rubber plate is easily worn by abrasives and frequently replaced. There are some difficulties.
JP-A-11-198042

この発明は、上記従来のサンドブラスト装置用のマスク装置の問題点を解消し、サンドブラスト装置の外筒に対する着脱が容易で、作業時間と労力を大幅に省略でき、またマスク本体とガラス板の刻印面との間に微小間隔を形成するための位置調整を不要として手間とコストを削減でき、マスク本体とガラス板との間の研磨材粒子や硬いゴミによってガラス板に傷をつけることのないマスク装置を提供することを課題としている。   The present invention eliminates the problems of the mask device for the conventional sand blasting device, can be easily attached to and detached from the outer cylinder of the sand blasting device, can greatly reduce the work time and labor, and the marking surface of the mask body and the glass plate This eliminates the need for position adjustment to form a minute gap between the mask body and the labor and costs, and does not damage the glass plate due to abrasive particles or hard dust between the mask body and the glass plate. It is an issue to provide.

この発明においては、上記課題を解決するため、サンドブラスト装置の外筒92の先端に取り付けられるバヨネットマウント2と、刻印すべき形状に対応する切り抜き開口34を備えた円盤状金属製のマスク本体3と、このマスク本体3の外周縁に離脱可能に内周縁部が嵌合する環状の弾性支持部材4と、この弾性支持部材4に離脱可能に嵌合し、バヨネットマウント2に対して捻回して係合可能なバヨネットリング5とを具備させてサンドブラスト用マスク装置1を構成した。
また、この発明においては、弾性支持部材4に弾性台座6と、キャップ7とを具備させ、台座6は、バヨネットリング2に離脱可能に弾性的に嵌合させ、キャップ7は、台座6に離脱可能に弾性的に嵌合させ、嵌合時に台座6との間にマスク本体3の外周縁部を保持するようにして上記サンドブラスト用マスク装置1を構成した。
さらにこの発明においては、キャップ7に、マスク本体3の施工面に対向する面よりわずかに施工面側に膨出した環状の当接部73を具備させ、この当接部73を施工面に押し当てたときに、施工面とマスク本体3との間に所要の微小間隔を形成するように上記サンドブラスト用マスク装置1を構成した。
In the present invention, in order to solve the above problems, a bayonet mount 2 attached to the tip of the outer cylinder 92 of the sandblasting device, and a disk-shaped metal mask body 3 having a cutout opening 34 corresponding to the shape to be engraved, An annular elastic support member 4 whose inner peripheral edge portion is detachably fitted to the outer peripheral edge of the mask body 3 and is detachably fitted to the elastic support member 4 and twisted with respect to the bayonet mount 2 for engagement. The sandblasting mask device 1 is configured by including a bayonet ring 5 that can be combined.
In the present invention, the elastic support member 4 is provided with the elastic pedestal 6 and the cap 7, the pedestal 6 is detachably elastically fitted to the bayonet ring 2, and the cap 7 is detached from the pedestal 6. The sandblast mask device 1 was configured so as to be elastically fitted so that the outer peripheral edge of the mask body 3 was held between the base 6 and the base 6 when fitted.
Furthermore, in this invention, the cap 7 is provided with an annular contact portion 73 bulging slightly toward the construction surface side from the surface facing the construction surface of the mask main body 3, and the contact portion 73 is pushed against the construction surface. The sandblast mask device 1 was configured so as to form a required minute gap between the construction surface and the mask body 3 when applied.

この発明においては、バヨネットマウント2に対してバヨネットリング5を所定角度捻回するだけでマスク装置1をサンドブラスト装置の外筒92に対して着脱でき、マスクの交換作業時間を大幅に短縮することができる。マスク交換に伴う生産ラインの停止時間短縮による生産性向上効果が期待できる。
またこの発明においては、弾性支持部材4が台座6とキャップ7で構成されるから、弾性支持部材4に対するマスク本体3の着脱作業が容易になる。
さらにこの発明においては、弾性支持部材4におけるキャップ7の当接部73を施工面に当接させることにより、施工面とマスク本体3との間に所要の微小間隔Sが自動的に形成されるから、微小間隔を形成するための位置調整が不要で手間とコストを削減でき、またマスク本体3とガラス板Gとの間に研磨材粒子や硬いゴミが介在していても、弾性支持部材4の弾性によってマスク本体3が容易に変位するから、ガラス板Gに傷をつけることがない等の効果を有する。
In the present invention, the mask device 1 can be attached to and detached from the outer cylinder 92 of the sandblasting device simply by twisting the bayonet ring 5 to the bayonet mount 2 by a predetermined angle, and the mask replacement work time can be greatly shortened. it can. Productivity improvement effect can be expected by shortening the downtime of the production line due to mask replacement.
Moreover, in this invention, since the elastic support member 4 is comprised by the base 6 and the cap 7, the attachment or detachment operation | work of the mask main body 3 with respect to the elastic support member 4 becomes easy.
Furthermore, in the present invention, the required minute gap S is automatically formed between the construction surface and the mask body 3 by bringing the contact portion 73 of the cap 7 in the elastic support member 4 into contact with the construction surface. Therefore, it is not necessary to adjust the position for forming a minute interval, and labor and cost can be reduced. Even if abrasive particles or hard dust is interposed between the mask body 3 and the glass plate G, the elastic support member 4 can be used. Since the mask main body 3 is easily displaced by the elasticity, the glass plate G is not damaged.

図面を参照してこの発明の実施の形態を説明する。図1はサンドブラスト用マスク装置の断面図、図2はサンドブラスト用マスク装置の平面図、図3はサンドブラスト用マスク装置の分解斜視図、図4(a)はバヨネットマウントの平面図、(b)は同断面図、図5(a)は弾性支持部材を構成する台座の平面図、(b)は同断面図、図6(a)はバヨネットリングの平面図、(b)は同断面図、図7(a)はバヨネットリングと弾性支持部材の嵌合状態の平面図、(b)は同断面図、図8はサンドブラスト用マスク装置の一部の拡大断面図、図9、図10はサンドブラスト用マスク装置の使用状態の断面図である。   Embodiments of the present invention will be described with reference to the drawings. 1 is a cross-sectional view of a sandblast mask device, FIG. 2 is a plan view of the sandblast mask device, FIG. 3 is an exploded perspective view of the sandblast mask device, FIG. 4A is a plan view of a bayonet mount, and FIG. 5A is a plan view of a pedestal constituting the elastic support member, FIG. 5B is a cross-sectional view thereof, FIG. 6A is a plan view of a bayonet ring, and FIG. 5B is a cross-sectional view thereof. 7 (a) is a plan view of the bayonet ring and the elastic support member in a fitted state, (b) is a cross-sectional view thereof, FIG. 8 is an enlarged cross-sectional view of a part of a sandblast mask device, and FIGS. 9 and 10 are for sandblasting. It is sectional drawing of the use condition of a mask apparatus.

図1において、ガラス板Gの表面のような平滑な施工面に刻印を施すためのサンドブラスト装置は、研磨材を噴射するノズル91と、このノズル91を包囲する外筒92と、この外筒92の内側においてノズル91を包囲する内筒95とを有する。外筒92と内筒95との間の空間96は、研磨材を回収する空間となる。マスク装置1は、外筒92の先端にノズル91を覆うように取り付けられる。   In FIG. 1, a sandblasting apparatus for marking a smooth construction surface such as the surface of a glass plate G includes a nozzle 91 for injecting abrasive, an outer cylinder 92 surrounding the nozzle 91, and the outer cylinder 92. And an inner cylinder 95 that surrounds the nozzle 91. A space 96 between the outer cylinder 92 and the inner cylinder 95 is a space for collecting the abrasive. The mask device 1 is attached to the tip of the outer cylinder 92 so as to cover the nozzle 91.

図2において、マスク装置1は、サンドブラスト装置の外筒92の先端に取り付けられるバヨネットマウント2と、刻印すべき形状に対応する切り抜き開口34を備えた円盤状金属製のマスク本体3と、このマスク本体3の外周縁に離脱可能に内周縁部が嵌合する環状の弾性支持部材4と、この弾性支持部材4に離脱可能に嵌合し、バヨネットマウント2に対して捻回して係合、離脱可能な係合爪51を備えたバヨネットリング5とを具備する。   In FIG. 2, a mask apparatus 1 includes a bayonet mount 2 attached to the tip of an outer cylinder 92 of a sandblast apparatus, a disk-shaped metal mask body 3 having a cutout opening 34 corresponding to a shape to be engraved, and the mask. An annular elastic support member 4 whose inner peripheral edge portion is detachably fitted to the outer peripheral edge of the main body 3, is detachably fitted to the elastic support member 4, and is twisted into and engaged with the bayonet mount 2. And a bayonet ring 5 with possible engaging claws 51.

マスク本体3は、円形平板状の主体部31と、主体部31の周縁から環状の段部32を介して扁平円錐状に広がるフランジ部33を備える。主体部31には、刻印すべき形状に対応する形状の切り抜き開口34が形成されている。
弾性支持部材4は、互いに嵌合離脱自在の台座6とキャップ7とを具備し、嵌合時に両者間にマスク本体3のフランジ部33を保持する。
The mask body 3 includes a circular flat plate-shaped main body portion 31 and a flange portion 33 that spreads in a flat conical shape from the periphery of the main body portion 31 via an annular stepped portion 32. A cutout opening 34 having a shape corresponding to the shape to be marked is formed in the main body 31.
The elastic support member 4 includes a pedestal 6 and a cap 7 that can be fitted to and detached from each other, and holds the flange portion 33 of the mask body 3 between them when fitted.

台座6は、ゴム又は弾性合成樹脂製の環状体で、内周側の環状の支持部61、外周側の環状の嵌合部62、両者間に位置する環状の弾性部63、環状の係合部64、外周側に径方向に突出する複数の係合突片65を具備する。環状の支持部61は、円周方向に所定間隔を置いて複数形成された通気溝66を有し、上部にマスク本体3のフランジ部33を乗せ受ける。環状の嵌合部62は、外周側においてバヨネットリング5に弾性的に嵌合する。弾性部63は、弾性支持部材4に特に軸線方向に撓みやすい弾性を付与するためのもので、内周縁の支持部61と外周縁の嵌合部62に対してガラス板Gと反対側へ膨出するように断面U字状に湾曲している。環状の係合部64は、弾性部63の内周側端においてキャップ7に弾性的に係合する。図2、図5に示すように、台座6の支持部61上には、台座6の中心に対する回転角度を示す目盛67が表示される。また、図2、図3に示すように、マスク本体3の周辺部には、目盛67と合致させてマスク本体3と台座6との相対回転角度を知るための開口35が形成される。係合突片65上には、バヨネットリング5の係合爪51と係合して相互に回り止めするためのボス68(図3,図5)が突設される。   The pedestal 6 is an annular body made of rubber or elastic synthetic resin, and has an annular support portion 61 on the inner peripheral side, an annular fitting portion 62 on the outer peripheral side, an annular elastic portion 63 positioned therebetween, and an annular engagement. The part 64 includes a plurality of engaging protrusions 65 protruding radially on the outer peripheral side. The annular support portion 61 has a plurality of ventilation grooves 66 formed at predetermined intervals in the circumferential direction, and receives the flange portion 33 of the mask body 3 on the upper portion. The annular fitting portion 62 is elastically fitted to the bayonet ring 5 on the outer peripheral side. The elastic part 63 is provided to give the elastic support member 4 elasticity that is particularly flexible in the axial direction, and swells to the opposite side of the glass plate G with respect to the support part 61 on the inner peripheral edge and the fitting part 62 on the outer peripheral edge. It is curved to have a U-shaped cross section so as to protrude. The annular engaging portion 64 is elastically engaged with the cap 7 at the inner peripheral end of the elastic portion 63. As shown in FIGS. 2 and 5, a scale 67 indicating a rotation angle with respect to the center of the base 6 is displayed on the support portion 61 of the base 6. As shown in FIGS. 2 and 3, an opening 35 is formed in the peripheral portion of the mask body 3 so as to match the scale 67 to know the relative rotation angle between the mask body 3 and the pedestal 6. On the engagement protrusion 65, a boss 68 (FIGS. 3 and 5) for engaging with the engagement claws 51 of the bayonet ring 5 and preventing the mutual rotation is provided.

キャップ7は、環状で、外周縁の係合部71において台座6の係合部64に離脱可能に弾性的に嵌合し、嵌合時に台座6の支持部61との間にマスク本体3の外周縁部33を保持する環状の保持部72を有する。キャップ7は、ゴム、プラスチック、金属の何れかで構成され、使用時にガラス板Gの刻印面に接する環状の当接部73を有する。当接部73は、マスク本体3のガラス板Gに対向する面よりわずかにガラス板G側に膨出しており、ガラス板Gに押し当てたときに、ガラス板Gとマスク本体3との間に所要の微小間隔S(図8)が形成される。キャップ7の保持部72には、相互嵌合時に台座6の通気溝66と連通する通気溝74が形成される。通気溝74、66は、円周方向に所定の相互間隔を置いて放射状に伸び、マスク本体3との嵌合時に、マスク本体3の外周縁との間に空間96へ連通する通気路を形成する(図8)。サンドブラスト噴流によりマスク本体3とガラス板Gとの間の微小間隔Sに正圧が生じる。この正圧により、マスク本体3とガラス板Gとの間に進入した研磨材が通気溝74、66を介して空間96へ排出、回収される   The cap 7 has an annular shape and is elastically fitted to the engaging portion 64 of the pedestal 6 so that it can be detached at the engaging portion 71 on the outer peripheral edge. An annular holding portion 72 that holds the outer peripheral edge portion 33 is provided. The cap 7 is made of rubber, plastic, or metal, and has an annular contact portion 73 that comes into contact with the marking surface of the glass plate G when in use. The contact portion 73 bulges slightly toward the glass plate G side from the surface of the mask main body 3 facing the glass plate G, and when pressed against the glass plate G, between the glass plate G and the mask main body 3. A required minute interval S (FIG. 8) is formed. The holding portion 72 of the cap 7 is formed with a ventilation groove 74 that communicates with the ventilation groove 66 of the base 6 at the time of mutual fitting. The ventilation grooves 74 and 66 extend radially at predetermined intervals in the circumferential direction, and form a ventilation path communicating with the space 96 between the outer periphery of the mask body 3 and the mask body 3 when fitted. (FIG. 8). A positive pressure is generated in the minute gap S between the mask body 3 and the glass plate G by the sandblast jet. With this positive pressure, the abrasive that has entered between the mask body 3 and the glass plate G is discharged and collected into the space 96 through the ventilation grooves 74 and 66.

バヨネットリング5は、台座6との嵌合時に突片65と重なる複数の係合爪51を外周側に有する。係合爪51は、突片65のボス68が嵌合して台座6とバヨネットリング5を回り止めする係合孔52を有する。図5、図7に示すように、突片65は、台座6の円周方向の始端65aと終端65bを有し、終端65b側に、係合爪51との重合時(図7)に、係合爪51の外周に突出する係合突部69を有する。係合突部69は、始端65aから終端65bに向かって係合爪51から径方向への突出寸法を漸増させるように、スパイラルに膨出する。   The bayonet ring 5 has a plurality of engaging claws 51 on the outer peripheral side that overlap the protruding pieces 65 when fitted to the pedestal 6. The engaging claw 51 has an engaging hole 52 that the boss 68 of the projecting piece 65 is fitted to prevent the base 6 and the bayonet ring 5 from rotating. As shown in FIGS. 5 and 7, the projecting piece 65 has a starting end 65a and a terminal end 65b in the circumferential direction of the pedestal 6, and at the time of overlapping with the engaging claw 51 on the terminal end 65b side (FIG. 7), The engaging claw 51 has an engaging protrusion 69 protruding on the outer periphery. The engagement protrusion 69 bulges in a spiral so that the protrusion dimension in the radial direction from the engagement claw 51 gradually increases from the start end 65a to the end point 65b.

バヨネットマウント2は、環状で、サンドブラスト装置の外筒92上にボルトで固定される。バヨネットマウント2は、係合溝21とこれにつながる切欠22を具備する。係合溝21は、バヨネットマウント2の内周側に円周方向に伸びるように形成され、バヨネットリング5の係合爪51と弾性支持部材4の係合突部69が一体に回動して係合する。係合溝21は、円周方向の始端21aと終端21bを有する(図3,4)。切欠22は、係合溝21の始端21a側に設けられ、係合爪51と突片65を軸線方向に受け入れることができる。係合溝21の始端21aには、半径方向中心側へ突出した膨出部23を具備する。バヨネットリング5の捻回時に、弾性支持部材4における係合突部69の終端部が弾性的に撓んで膨出部23を乗り越えて係合する(図2)。係合溝の膨出部23と係合突部69の終端部との係合により、バヨネットマウント2に対するバヨネットリング5の緩みを阻止する。   The bayonet mount 2 is annular and is fixed on the outer cylinder 92 of the sandblasting device with bolts. The bayonet mount 2 includes an engagement groove 21 and a notch 22 connected thereto. The engagement groove 21 is formed on the inner peripheral side of the bayonet mount 2 so as to extend in the circumferential direction, and the engagement claw 51 of the bayonet ring 5 and the engagement protrusion 69 of the elastic support member 4 rotate integrally. Engage. The engagement groove 21 has a start end 21a and a end end 21b in the circumferential direction (FIGS. 3 and 4). The notch 22 is provided on the start end 21a side of the engagement groove 21 and can receive the engagement claw 51 and the protruding piece 65 in the axial direction. The start end 21a of the engagement groove 21 includes a bulging portion 23 that protrudes toward the center in the radial direction. When the bayonet ring 5 is twisted, the terminal end portion of the engaging protrusion 69 in the elastic support member 4 is elastically bent to get over the bulging portion 23 and engage (FIG. 2). The bayonet ring 5 is prevented from loosening with respect to the bayonet mount 2 by the engagement between the bulging portion 23 of the engaging groove and the end portion of the engaging protrusion 69.

マスク装置1をサンドブラスト装置に装着するには、マスク本体3を台座6とキャップ7との間に保持した弾性支持部材4をバヨネットリング5に嵌合して一体化し、これをバヨネットマウント2に装着する。バヨネットリング5の係合爪51をバヨネットマウント2の切欠22に軸方向に嵌合させて図2,図3において時計方向へ回転させれば、係合爪51が台座6の突片65と共にバヨネットリング5の係合溝21に進入し、係合突部69の終端部が弾性的に径方向に撓んで膨出部23を乗り越えて係合する(図2)。着脱は左右の回転操作のみで容易であるから、マスク本体3の交換は短時間に行える。   In order to attach the mask device 1 to the sand blast device, the elastic support member 4 holding the mask body 3 between the base 6 and the cap 7 is fitted and integrated with the bayonet ring 5, and this is attached to the bayonet mount 2. To do. When the engaging claw 51 of the bayonet ring 5 is fitted in the notch 22 of the bayonet mount 2 in the axial direction and rotated clockwise in FIGS. 2 and 3, the engaging claw 51 together with the protruding piece 65 of the base 6 is bayonet. It enters into the engagement groove 21 of the ring 5, and the end portion of the engagement protrusion 69 elastically bends in the radial direction and gets over the bulging portion 23 and engages (FIG. 2). Since the attachment / detachment is easy only by the left and right rotation operations, the mask body 3 can be replaced in a short time.

ガラス板Gにサンドブラストによる刻印を施す場合には、図9に示すように、搬送装置94でサンドブラスト装置上にガラス板Gを搬送し、位置決め台座93の上に置く。このとき、図8に示すように、ガラス板Gは弾性支持部材4の当接部73に接してやや下方へ弾性支持部材4を撓ませる。マスク本体3とガラス板Gの刻印面との間には、マスク本体3と弾性支持部材4の当接部73とのギャップに相当する所定の微小間隔Sが自動的に形成される。ノズル91から研磨材が噴射され、マスク本体3の開口34を介してガラス板Gに衝突した研磨材によって刻印が形成される。開口34からマスク本体3とガラス板Gとの間に進入した研磨材は、サンドブラスト噴流による正圧で、図8の矢印のように通気溝74,66を介して空間96へ排出され回収される。   When engraving the glass plate G by sandblasting, the glass plate G is transported onto the sandblasting device by the transport device 94 and placed on the positioning pedestal 93 as shown in FIG. At this time, as shown in FIG. 8, the glass plate G is in contact with the contact portion 73 of the elastic support member 4 and slightly bends the elastic support member 4 downward. A predetermined minute space S corresponding to the gap between the mask body 3 and the contact portion 73 of the elastic support member 4 is automatically formed between the mask body 3 and the marking surface of the glass plate G. Abrasive material is sprayed from the nozzle 91, and a stamp is formed by the abrasive material that has collided with the glass plate G through the opening 34 of the mask body 3. The abrasive that has entered between the mask main body 3 and the glass plate G through the opening 34 is discharged into the space 96 through the ventilation grooves 74 and 66 as shown by the arrows in FIG. .

ガラス板Gを位置決め台座93の上に置くとき、図10に誇張して示すように、ガラス板Gとマスク本体3との間に固い異物Fが介在した場合、弾性支持部材4が弾性的に下方へ変位することにより、異物Fが強くガラス板Gに押しつけられて傷つけられるのを防止する。   When the glass plate G is placed on the positioning pedestal 93, as shown in an exaggerated manner in FIG. 10, when a hard foreign substance F is interposed between the glass plate G and the mask body 3, the elastic support member 4 is elastically elastic. Displacement downward prevents the foreign material F from being strongly pressed against the glass plate G and being damaged.

マスク本体3と弾性支持部材4との相対回転角度位置は、目盛67と開口35を合致させることにより、正確迅速に設定することができる。   The relative rotation angle position between the mask main body 3 and the elastic support member 4 can be set accurately and quickly by matching the scale 67 with the opening 35.

この発明は、自動車用窓ガラスに商標や識別記号等を刻印するためのサンドブラスト装置のマスク装置として適用することができる。   The present invention can be applied as a mask device for a sand blasting device for imprinting a trademark, an identification symbol, or the like on an automobile window glass.

サンドブラスト用マスク装置の断面図である。It is sectional drawing of the mask apparatus for sandblasting. サンドブラスト用マスク装置の平面図である。It is a top view of the mask apparatus for sandblasting. サンドブラスト用マスク装置の分解斜視図である。It is a disassembled perspective view of the mask apparatus for sandblasting. (a)はバヨネットマウントの平面図、(b)は同断面図である。(A) is a top view of a bayonet mount, (b) is the same sectional view. (a)は弾性支持部材を構成する台座の平面図、(b)は同断面図である。(A) is a top view of the base which comprises an elastic support member, (b) is the sectional drawing. (a)はバヨネットリングの平面図、(b)は同断面図である。(A) is a top view of a bayonet ring, (b) is the same sectional drawing. (a)はバヨネットリングと弾性支持部材の嵌合状態の平面図、(b)は同断面図である。(A) is a top view of the fitting state of a bayonet ring and an elastic support member, (b) is the same sectional drawing. サンドブラスト用マスク装置の一部の拡大断面図である。It is a partial expanded sectional view of the mask apparatus for sandblasting. サンドブラスト用マスク装置の使用状態の断面図である。It is sectional drawing of the use condition of the mask apparatus for sandblasting. サンドブラスト用マスク装置の使用状態の断面図である。It is sectional drawing of the use condition of the mask apparatus for sandblasting. 従来のサンドブラスト用マスク装置の使用状態の断面図である。It is sectional drawing of the use condition of the conventional sandblast mask apparatus.

符号の説明Explanation of symbols

1 マスク装置
2 バヨネットマウント
21 係合溝
21a 始端
21b 終端
22 切欠
23 膨出部
3 マスク本体
31 主体部
32 段部
33 フランジ部
34 切り抜き開口
35 開口
4 弾性支持部材
5 バヨネットリング
51 係合爪
52 係合孔
6 弾性支持部材の台座
61 支持部
62 嵌合部
63 弾性部
64 係合部
65 突片
65a 始端
65b 終端
66 通気溝
67 目盛
68 ボス
69 係合突部
7 弾性支持部材のキャップ
71 係合部
72 保持部
73 当接部
74 通気溝
91 ノズル
92 外筒
93 位置決め台座
94 搬送装置
95 内筒
96 空間
G ガラス板
F 異物
S 間隔
DESCRIPTION OF SYMBOLS 1 Mask apparatus 2 Bayonet mount 21 Engaging groove 21a Starting end 21b Ending 22 Notch 23 Expansion part 3 Mask main body 31 Main part 32 Step part 33 Flange part 34 Cut-out opening 35 Opening 4 Elastic support member 5 Bayonet ring 51 Engaging claw 52 Engagement Joint hole 6 Base 61 of elastic support member Support portion 62 Fitting portion 63 Elastic portion 64 Engagement portion 65 Protruding piece 65a Start end 65b Termination 66 Ventilation groove 67 Scale 68 Boss 69 Engagement protrusion 7 Elastic support member cap 71 Engagement Part 72 Holding part 73 Contact part 74 Ventilation groove 91 Nozzle 92 Outer cylinder 93 Positioning base 94 Conveying device 95 Inner cylinder 96 Space G Glass plate F Foreign object S Interval

Claims (6)

平滑な施工面に刻印を施すためのサンドブラスト装置におけるノズルを包囲する外筒の先端部に取り付けられるマスク装置であって、
前記サンドブラスト装置の外筒の先端に取り付けられるバヨネットマウントと、
刻印すべき形状に対応する切り抜き開口を備えた円盤状金属製のマスク本体と、
このマスク本体の外周縁に離脱可能に内周縁部が嵌合する環状の弾性支持部材と、
この弾性支持部材に離脱可能に嵌合し、前記バヨネットマウントに対して捻回して係合可能なバヨネットリングとを具備することを特徴とするサンドブラスト用マスク装置。
A mask device attached to the tip of an outer cylinder surrounding a nozzle in a sandblasting device for marking a smooth construction surface,
A bayonet mount attached to the tip of the outer cylinder of the sandblasting device;
A disc-shaped metal mask body with a cut-out opening corresponding to the shape to be engraved;
An annular elastic support member with which the inner peripheral edge is detachably fitted to the outer peripheral edge of the mask body;
A sandblast mask device comprising: a bayonet ring that is detachably fitted to the elastic support member and can be twisted and engaged with the bayonet mount.
前記弾性支持部材は、台座と、キャップとを具備し、
前記台座は、バヨネットリングに離脱可能に弾性的に嵌合し、
前記キャップは、前記台座に離脱可能に弾性的に嵌合し、嵌合時に台座との間に前記マスク本体の外周縁部を保持することを特徴とする請求項1に記載のサンドブラスト用マスク装置。
The elastic support member comprises a pedestal and a cap,
The pedestal is detachably elastically fitted to the bayonet ring,
The sandblast mask device according to claim 1, wherein the cap is detachably elastically fitted to the pedestal and holds the outer peripheral edge of the mask body between the cap and the pedestal. .
前記キャップが、前記マスク本体の前記施工面に対向する面よりわずかに施工面側に膨出した環状の当接部を具備し、当該当接部を施工面に押し当てたときに、施工面とマスク本体との間に所要の微小間隔を形成することを特徴とする請求項2に記載のサンドブラスト用マスク装置。   When the cap has an annular contact portion that slightly bulges to the construction surface side from the surface facing the construction surface of the mask body, the construction surface is pressed against the construction surface. The sandblast mask device according to claim 2, wherein a required minute interval is formed between the mask and the mask body. 前記バヨネットリングが、外周側に径方向に突出する複数の係合爪を有し、
前記弾性支持部材が、前記バヨネットリングの係合爪の外周に、円周方向始端から終端に向かってその突出寸法を漸増させるように径方向にスパイラルに膨出する係合突部を有し、
前記バヨネットマウントが、前記バヨネットリングの係合爪と前記弾性支持部材の係合突部が回動して係合する係合溝を内周側に具備すると共に、係合爪と係合突部を係合溝の円周方向始端に軸線方向に受け入れる複数の切欠を具備し、
前記バヨネットマウントの係合溝の始端部には、前記バヨネットリングの捻回時に、前記弾性支持部材の係合突部終端部が弾性的に径方向に撓んで乗り越える膨出部を具備し、
前記係合溝の膨出部と前記係合突部の終端部との係合により、相互係合状態にある前記バヨネットマウントに対する前記バヨネットリングの緩みを阻止することを特徴とする請求項1に記載のサンドブラスト用マスク装置。
The bayonet ring has a plurality of engaging claws protruding radially on the outer peripheral side,
The elastic support member has an engaging protrusion that bulges in a spiral in the radial direction on the outer periphery of the engaging claw of the bayonet ring so as to gradually increase its protruding dimension from the circumferential start to the end.
The bayonet mount has an engagement groove on the inner peripheral side for engaging the engagement claw of the bayonet ring and the engagement projection of the elastic support member on the inner peripheral side, and the engagement claw and the engagement projection. A plurality of notches for receiving axially in the circumferential direction start end of the engagement groove,
The start end portion of the engagement groove of the bayonet mount has a bulging portion over which the engagement protrusion end portion of the elastic support member elastically bends in a radial direction when the bayonet ring is twisted,
2. The loosening of the bayonet ring with respect to the bayonet mount that is in the mutually engaged state is prevented by engagement between the bulging portion of the engagement groove and the terminal end portion of the engagement protrusion. The sandblast mask apparatus as described.
前記弾性支持部材の前記内周縁部に、前記マスク本体の外周縁との嵌合時に当該外周縁との間に前記サンドブラスト装置の外筒の内側へ連通する通気路を形成する通気溝が設けられ、
マスク本体と前記施工面との間に進入した研磨材が、通気溝を介して外筒の内側に排出されるように構成されていることを特徴とする請求項1に記載のサンドブラスト用マスク装置。
A vent groove is formed in the inner peripheral edge of the elastic support member to form a vent path communicating with the outer peripheral edge between the outer peripheral edge and the inside of the outer cylinder of the sandblasting device. ,
2. The sandblast mask device according to claim 1, wherein the abrasive that has entered between the mask main body and the construction surface is discharged to the inside of the outer cylinder through a ventilation groove. .
前記弾性支持部材の台座の内周縁部に、当該弾性支持部材の中心に対する回転角度を示す目盛が表示され、
前記マスク本体の前記台座の内周縁部対応位置に、前記目盛と合致させてマスク本体と弾性支持部材との相対回転角度を知るための開口が形成されていることを特徴とする請求項2に記載のサンドブラスト用マスク装置。
A scale indicating a rotation angle with respect to the center of the elastic support member is displayed on the inner peripheral edge of the base of the elastic support member,
3. An opening is formed at a position corresponding to the inner peripheral edge of the pedestal of the mask body so as to match the scale and to know a relative rotation angle between the mask body and the elastic support member. The sandblast mask apparatus as described.
JP2004138068A 2004-05-07 2004-05-07 Sandblast mask device Expired - Lifetime JP4097270B2 (en)

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JP2004138068A JP4097270B2 (en) 2004-05-07 2004-05-07 Sandblast mask device
CN 200510068490 CN1693036B (en) 2004-05-07 2005-04-28 Mask device for sand-blast

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Cited By (1)

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CN1693036B (en) 2010-05-05
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