WO2010122851A1 - ブラスト装置およびブラスト加工方法 - Google Patents
ブラスト装置およびブラスト加工方法 Download PDFInfo
- Publication number
- WO2010122851A1 WO2010122851A1 PCT/JP2010/054077 JP2010054077W WO2010122851A1 WO 2010122851 A1 WO2010122851 A1 WO 2010122851A1 JP 2010054077 W JP2010054077 W JP 2010054077W WO 2010122851 A1 WO2010122851 A1 WO 2010122851A1
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- WIPO (PCT)
- Prior art keywords
- abrasive
- nozzle
- case
- cover
- workpiece
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/003—Removing abrasive powder out of the blasting machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
Definitions
- the present invention relates to an apparatus and method for processing the surface of a workpiece, for example, and more specifically, a blasting apparatus and a blasting method for performing processing such as forming a recess on the surface of a workpiece such as a glass substrate by spraying an abrasive.
- a blasting apparatus and a blasting method for performing processing such as forming a recess on the surface of a workpiece such as a glass substrate by spraying an abrasive.
- a glass substrate having a thickness of about 0.7 mm is generally used. This type of glass substrate is desired to have a flat surface and excellent light transmittance.
- Such a glass substrate may have defects such as fine scratches and bubble holes on the surface, or bubbles and foreign matters mixed inside during the manufacturing process. If there is such a defect, there is a problem that light is scattered, so usually, after this portion is scraped off, the concave portion formed by scraping is filled with a transparent resin or the like to be flattened. Yes.
- an abrasive material also referred to as shot or abrasive grains
- a fluid such as air from a spray nozzle to glass.
- FIG. 2 shows a schematic configuration of a conventional blast apparatus.
- the blasting device 21 includes an injection nozzle 22 that injects the abrasive 100 and a nozzle case 23 that surrounds the injection nozzle 22.
- a suction hose 24 is connected to the rear side of the side wall 23a of the nozzle case 23, and the abrasive 100 that has been sprayed from the spray nozzle 22 and used for blasting when forming the recess 200b on the surface 200a of the glass substrate 200 is recovered. This prevents the abrasive 100 from being scattered around.
- the abrasive 100 sprayed from the spray nozzle 22 has a particle size of several ⁇ m.
- the recess 200b formed by scraping a defect of the glass substrate 200 by blasting has a diameter of several millimeters and a depth of several tens ⁇ m to several hundreds ⁇ m.
- the following patent document is mentioned as a prior art document relevant to this invention.
- the particle diameter is several hundred ⁇ m to several hundreds, for example, used in sandblasting for finishing the surface of stone, concrete, metal or the like to a rough surface.
- the abrasive can be sufficiently sucked, but it is used for fine processing such as forming the recess 200b having a diameter of several millimeters on the surface 200a of the glass substrate 200 described above.
- the abrasive 100 has a small particle size of several ⁇ m, the abrasive 100 cannot be sufficiently sucked.
- the blasting device 21 in the direction opposite to the spraying direction of the abrasive 100 as shown in the figure. Since 100 is sucked, the striking force of the abrasive 100 hitting the surface 200a of the glass substrate 200 is weakened, and there is a problem that it cannot be processed sufficiently.
- the processing accuracy in the depth direction when forming the recess 200b for scraping off the above-described defects on the surface 200a of the glass substrate 200 having a thickness of about 0.7 mm is several ⁇ m to several tens ⁇ m. Therefore, if the injection force is increased together with the suction force, such processing accuracy in the depth direction cannot be obtained.
- the problem to be solved by the present invention is to provide a blasting device and a blasting method capable of increasing the suction force for abrasive recovery without affecting the processing of the workpiece surface by the abrasive. Is to provide.
- a blasting apparatus includes an injection nozzle capable of injecting an abrasive toward the surface of a workpiece, a rectifying surface parallel to the surface of the workpiece, and from the injection nozzle.
- a recovery case that covers the outer periphery of the nozzle case, and the abrasive that is injected from the injection nozzle and hits the surface of the workpiece is between the rectifying surface of the cover and the surface of the workpiece.
- the gist of the invention is that it is recovered from the recovery passage through a gap formed at the bottom.
- the present invention is a blasting method for processing a surface of a workpiece with an abrasive sprayed from a spray nozzle, and has a rectifying surface parallel to the surface of the workpiece.
- a cover in which an ejection hole through which abrasives ejected from the ejection nozzle pass is opened is opened; a nozzle case that includes the cover and surrounds the ejection nozzle; and a recovery that collects the abrasive around the nozzle case by suction.
- a recovery case that covers the outer periphery of the nozzle case so as to form a passage, and the abrasive that is sprayed from the spray nozzle and collides with the surface of the workpiece, the rectifying surface of the cover and the workpiece
- the gist of the invention is that it is recovered from the recovery passage through a gap formed between the surface and the surface.
- the abrasive that is sprayed from the spray nozzle and hits the surface of the workpiece through the ejection hole of the cover, that is, the surface of the workpiece is processed. Then, as the abrasive is diffused around the gap formed between the flow straightening surface of the cover and the surface of the workpiece, the scattering force (force that diffuses to the surroundings) is reduced, and the abrasive is When the scattering force is weakened, it is recovered by suction from the recovery passage formed by the recovery case.
- the direction of sucking the abrasive used for processing the surface of the workpiece is orthogonal and radial with respect to the direction in which the abrasive is ejected. Even if the suction force from the recovery passage is increased as much as possible, this suction force is suppressed from affecting the impact force caused by the impact of the abrasive on the surface of the workpiece. Therefore, it is possible to recover the abrasive while preventing the abrasive from being scattered around while maintaining the accuracy of blasting.
- the opening end of the recovery case is arranged so as to be substantially flush with the rectifying surface of the cover, the cover rectifying surface is brought close to the workpiece surface, that is, the cover Even when the gap formed between the current straightening surface and the surface of the workpiece is narrowed, the abrasive can be sufficiently sucked and recovered from the recovery passage formed by the recovery case.
- the side wall of the nozzle case has a conical shape whose diameter is expanded on the injection side
- the side wall of the recovery case has a conical shape whose diameter is increased on the injection side
- the blasting method according to the present invention a configuration in which a recess is formed on the surface of the workpiece by the abrasive material sprayed from the spray nozzle, or the glass substrate used for the display panel such as a liquid crystal display panel.
- the concave portion can be formed with high precision so as to scrape off such defects on the glass substrate in which defects such as fine scratches or bubble holes on the surface or bubbles or foreign matters mixed in the surface have occurred. It becomes easy and can contribute to the improvement of the workability of the defect correction of the glass substrate.
- the abrasive that is used to process the surface of the workpiece and scatters diffuses around the gap between the rectifying surface of the cover and the surface of the workpiece. Since the scattering force (the force that diffuses to the surroundings) is weakened and collected by suction from the collection passage formed by the collection case, the suction force is increased so that even a small-diameter abrasive can be sucked sufficiently. In addition, the influence on the impact force of the abrasive on the surface of the workpiece can be suppressed, and scattering of the abrasive around the object can be prevented while maintaining the accuracy of blasting.
- FIG. 1 is a cross-sectional view showing a schematic configuration of a blasting apparatus 1 according to the present invention.
- the abrasive body 100 is guided to the nozzle body 3 from an unillustrated abrasive supply tank through the abrasive supply hose 4 to the abrasive introduction port 3 a.
- a substantially cylindrical container-shaped abrasive guiding chamber 3b is formed.
- a conical inner surface 3c constricted in a conical shape is formed at the front end of the abrasive material guiding chamber 3b.
- the tip of the air injection tube 6 inserted from behind the abrasive material guiding chamber 3b is disposed inside the conical inner surface 3c.
- the air injection pipe 6 communicates with a compressed air supply source (not shown) via a compressed air supply hose 7 so that relatively high-pressure compressed air is sent and an air flow is injected from the tip of the air injection pipe 6.
- the nozzle 5 is provided at the front end of the nozzle body 3 so as to be positioned in front of the air injection pipe 6 in the air injection direction.
- the nozzle 5 penetrates the conical inner surface 3 c and communicates with the abrasive guide chamber 3 b, and ejects an abrasive jet from the abrasive jet 5 a of the nozzle 5.
- the nozzle holder 8 has a cylindrical shape with a tapered portion provided on the inner peripheral surface, and the outer peripheral tapered portion of the nozzle 5 is fitted by the inner tapered portion of the nozzle holder 8.
- the nozzle 5 is fixed to the nozzle body 3 by being screwed to the tip of the nozzle body 3 with a screw portion provided on the nozzle body 3.
- the abrasive 100 in the abrasive guide chamber 3b is guided to the annular gap portion between the conical inner surface 3c and the outer periphery of the air injection pipe 6, and rides on the air flow injected from the air injection pipe 6 to It is injected while diffusing in a conical shape from the abrasive material injection port 5a at the tip to the outside.
- the outer periphery of the injection nozzle 2 having such a configuration is surrounded by the nozzle case 9.
- the side wall 9a of the nozzle case 9 has a conical shape that gradually increases in diameter toward the injection side.
- a rear wall 9 b formed so as to close the rear of the nozzle case 9 is fixed to the nozzle body 3.
- a cover 10 having a disk shape is fixed to the front (injection side) of the nozzle case 9 so as to close the opening of the nozzle case 9.
- a circular rectifying surface 10a is formed on the ejection side of the cover 10, and an ejection hole 10b through which the abrasive 100 ejected from the nozzle 5 passes is formed in the center.
- the rectifying surface 10a of the cover 10 is formed so as to be parallel to the surface 200a of the glass substrate 200 to be blasted as shown in the figure, and the rectifying of the cover 10 is performed during blasting.
- the surface 10a is disposed so as to be separated from the surface 200a of the glass substrate 200 by a predetermined distance.
- the outer periphery of the nozzle case 9 is surrounded by a collection case 11.
- the side wall 11a of the recovery case 11 has a conical shape that gradually increases in diameter toward the injection side.
- a rear wall 11 b formed so as to close the rear of the collection case 11 is fixed to the nozzle body 3.
- a gap between the inner peripheral surface of the side wall 11a of the recovery case 11 and the outer peripheral surface of the side wall 9a of the nozzle case 9 serves as a recovery passage 11c for recovering the abrasive 100, and a ring is formed at the front end of the recovery passage 11c.
- a recovery port 11d is formed.
- the opening end 11e (recovery port 11d), which is the front end of the recovery case 11, is formed to be substantially flush with the rectifying surface 10a of the cover 10.
- Such a collection passage 11c communicates with the suction hose 12 through a suction port 11f formed to open behind the side wall 11a of the collection case 11.
- the suction hose 12 is connected to a suction machine (not shown) so that the abrasive 100 in the recovery passage 11c can be sucked.
- the abrasive 100 sprayed from the spray nozzle 5 has a particle size of several ⁇ m.
- the concave portion 200b having a circular shape in a plan view formed so as to scrape off defects (such as fine scratches on the surface 200a, air bubble holes, air bubbles or foreign matter mixed in the inside) by blasting, on the glass substrate 200,
- the diameter is several millimeters and the depth is several tens to several hundreds of micrometers.
- the ejection hole 10b opened in the center of the cover 10 is formed to have a size such that the ejected abrasive 100 does not come in contact, and its diameter is about several millimeters.
- the glass substrate 200 is transparent glass having a plate thickness of about 0.7 mm that is generally used for flat display panels such as liquid crystal display panels and plasma display panels.
- a concave portion 200b is formed by hitting the abrasive 100 that is sprayed from the spray nozzle 2 and hits the surface 200a of the glass substrate 100 through the spray hole 10b of the cover 10, that is, the surface 200a of the glass substrate 200.
- the polishing material 100 subjected to the blasting is performed through a gap portion 13 formed between the rectifying surface 10a of the cover 10 and the surface 200a of the glass substrate 200 from a location where it hits the surface 200a of the glass substrate 200.
- the scattering force the force that diffuses around
- the abrasive 100 whose scattering force is weakened by passing through the gap 13 where such an air flow is generated is easily recovered by suction from the recovery port 11d. At this time, although not shown, the glass scraps scraped off by the impact of the abrasive 100 are also collected by suction from the recovery port 11d together with the abrasive 100.
- the blasting apparatus 1 having such a configuration, even when the abrasive 100 having a small particle diameter of several ⁇ m is used, even if the suction force from the recovery passage 11c is increased so that the suction can be sufficiently performed, the glass substrate 100 The impact on the striking force of the abrasive 100 on the surface 200a can be reduced.
- the gap portion 13 is formed such that the direction of sucking the abrasive 100 used for processing the surface 200a of the glass substrate 200 is substantially orthogonal and radial with respect to the ejection direction of the abrasive 100. Therefore, even if the suction force from the collection passage 11c is increased so that even the abrasive 100 having a small particle size can be sufficiently sucked, this suction force is caused by the impact of the abrasive 100 on the surface 200a of the glass substrate 200. The impact on the impact force is suppressed.
- the conventional blasting device 21 described with reference to FIG. 2 has a configuration in which the inside of the nozzle case 23 is sucked from the rear, that is, a configuration in which the abrasive 100 is sucked in a direction opposite to the spraying direction of the abrasive 100.
- the suction force is increased, the striking force due to the impact of the abrasive 100 on the surface 200a of the glass substrate 200 is weakened, and there is a problem that it cannot be sufficiently processed.
- the blasting apparatus 1 according to the present invention Since the inside of the nozzle case 23 is not sucked from behind, but the inside of the collecting case 11 is sucked from behind, such a problem is solved.
- the processing accuracy in the depth direction when forming the concave portion 200b for scraping the above-described defect on the surface 200a of the glass substrate 200 having a thickness of about 0.7 mm is several ⁇ m to several tens ⁇ m.
- the abrasive 100 used for forming 200b then spreads as the gap 13 formed between the rectifying surface 10a of the cover 10 and the surface 200a of the glass substrate 200 diffuses to the surroundings (diffuses to the surroundings). Is collected from the collection port 11d by suction after the force is weakened.
- the opening end 11e of the collection case 11 is disposed so as to be substantially flush with the rectifying surface 10a of the cover 10, the rectifying surface 10a of the cover 10 is brought close to the surface 200a of the glass substrate 200.
- the abrasive 100 is sufficiently removed from the recovery passage 11c formed by the recovery case 11. It is possible to collect by suction.
- the glass substrate 200 is provided.
- the nozzle case 9 and the recovery case 11 are reduced in size while ensuring the area of the rectifying surface 10a of the cover 10 that is wide enough to weaken the scattering force of the abrasive 100 that is used for the processing of the surface 200a. It is possible.
- the present invention is not limited to such an embodiment, and can be variously modified without departing from the gist of the present invention. Of course, it can be implemented.
- the blasting device 1 described above has a configuration of a so-called suction blasting device
- the present invention can be applied to a pressure blasting device and a centrifugal blasting device, and is not limited to the above-described embodiment. .
- suction case 11f is provided in the recovery case 11
- a configuration in which two or more such suction ports are provided in order to increase the suction force for recovering the abrasive 100 may be used.
- the blasting apparatus according to the present invention can also be used to form grooves or through holes in the glass substrate 200. Can be used, and is not limited to the above-described embodiment.
Abstract
Description
Claims (8)
- 加工物の表面に向けて研磨材を噴射可能な噴射ノズルと、前記加工物の表面に対して平行な整流面を有すると共に前記噴射ノズルから噴射される研磨材が通る噴出孔が開口されたカバーと、前記カバーを含んで前記噴射ノズルを包囲するノズルケースと、前記ノズルケースの周囲に前記研磨材を吸引により回収する回収通路を形成するように該ノズルケースの外周を覆う回収ケースとを備え、前記噴射ノズルから噴射されて前記加工物の表面に打突された研磨材は、前記カバーの整流面と前記加工物の表面との間に形成される間隙部を介して前記回収通路より回収されるようにしたことを特徴とするブラスト装置。
- 前記回収ケースの開口端が、前記カバーの整流面と略同一面状になるように配置されていることを特徴とする請求項1に記載のブラスト装置。
- 前記ノズルケースの側壁が噴射側に拡径した円錐形状を有していると共に、前記回収ケースの側壁が噴射側に拡径した円錐形状を有していることを特徴とする請求項1または2に記載のブラスト装置。
- 噴射ノズルから噴射される研磨材により加工物の表面を加工するブラスト加工方法であって、前記加工物の表面に対して平行な整流面を有すると共に前記噴射ノズルから噴射される研磨材が通る噴出孔が開口されたカバーと、前記カバーを含んで前記噴射ノズルを包囲するノズルケースと、前記ノズルケースの周囲に前記研磨材を吸引により回収する回収通路を形成するように該ノズルケースの外周を覆う回収ケースとを備え、前記噴射ノズルから噴射されて前記加工物の表面に打突された研磨材は、前記カバーの整流面と前記加工物の表面との間に形成される間隙部を介して前記回収通路より回収されるようにしたことを特徴とするブラスト加工方法。
- 前記回収ケースの開口端が、前記カバーの整流面と略同一面状になるように配置されていることを特徴とする請求項4に記載のブラスト加工方法。
- 前記ノズルケースの側壁が噴射側に拡径した円錐形状を有していると共に、前記回収ケースの側壁が噴射側に拡径した円錐形状を有していることを特徴とする請求項4または5に記載のブラスト加工方法。
- 前記噴射ノズルから噴射される研磨材により前記加工物の表面に凹部を形成することを特徴とする請求項4から6のいずれか一項に記載のブラスト加工方法。
- 前記加工物が液晶ディスプレイパネルなどの表示パネルに用いられるガラス基板であることを特徴とする請求項4から7のいずれか一項に記載のブラスト加工方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US13/265,337 US8801499B2 (en) | 2009-04-21 | 2010-03-11 | Blasting apparatus and method for blast processing |
CN2010800179134A CN102413989A (zh) | 2009-04-21 | 2010-03-11 | 喷丸装置和喷丸加工方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009-102809 | 2009-04-21 | ||
JP2009102809 | 2009-04-21 |
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WO2010122851A1 true WO2010122851A1 (ja) | 2010-10-28 |
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PCT/JP2010/054077 WO2010122851A1 (ja) | 2009-04-21 | 2010-03-11 | ブラスト装置およびブラスト加工方法 |
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US (1) | US8801499B2 (ja) |
CN (1) | CN102413989A (ja) |
WO (1) | WO2010122851A1 (ja) |
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- 2010-03-11 CN CN2010800179134A patent/CN102413989A/zh active Pending
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US20120264355A1 (en) * | 2011-04-14 | 2012-10-18 | Keiji Mase | Polishing method by blasting and nozzle structure for a blasting apparatus for use in the polishing method |
CN115847271A (zh) * | 2022-11-28 | 2023-03-28 | 嘉兴春祐精密模具有限公司 | 一种钨钢模具精细化加工用抛光装置及其工艺 |
CN115847271B (zh) * | 2022-11-28 | 2023-09-22 | 嘉兴春祐精密模具有限公司 | 一种钨钢模具精细化加工用抛光装置及其工艺 |
Also Published As
Publication number | Publication date |
---|---|
US8801499B2 (en) | 2014-08-12 |
CN102413989A (zh) | 2012-04-11 |
US20120058711A1 (en) | 2012-03-08 |
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