WO2014049837A1 - Vacuum cleaning head - Google Patents

Vacuum cleaning head Download PDF

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Publication number
WO2014049837A1
WO2014049837A1 PCT/JP2012/075100 JP2012075100W WO2014049837A1 WO 2014049837 A1 WO2014049837 A1 WO 2014049837A1 JP 2012075100 W JP2012075100 W JP 2012075100W WO 2014049837 A1 WO2014049837 A1 WO 2014049837A1
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WO
WIPO (PCT)
Prior art keywords
vacuum
suction port
vacuum chamber
cleaning head
chamber
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PCT/JP2012/075100
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French (fr)
Japanese (ja)
Inventor
毅 近藤
Original Assignee
富士機械製造株式会社
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Application filed by 富士機械製造株式会社 filed Critical 富士機械製造株式会社
Priority to PCT/JP2012/075100 priority Critical patent/WO2014049837A1/en
Priority to JP2014538038A priority patent/JP6129194B2/en
Publication of WO2014049837A1 publication Critical patent/WO2014049837A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/003—Cleaning arrangements or devices for screen printers or parts thereof

Definitions

  • the present invention relates to screen printing in which cream solder is printed on a circuit board stacked under the screen mask by pushing the cream solder along the upper surface of the screen mask in which a large number of small openings are formed.
  • the present invention relates to a vacuum cleaning head for a machine.
  • Patent Document 1 discloses a vacuum cleaning method in which the lower surface of the screen mask is brought into contact with the lower surface through a cleaning sheet and moved along the lower surface, thereby removing the cream-like solder in the lower surface of the screen mask and the small openings. The head is described.
  • this type of vacuum cleaning head includes both a suction part having a longitudinal shape and a vacuum chamber, and a part of the vacuum chamber in the longitudinal direction is connected to a separate vacuum generator by a conduit such as a hose, Compared with the case where the vacuum generator is also integrated with the vacuum cleaning head, the effect of increasing the degree of freedom of the configuration can be obtained, but on the other hand, the suction force formed on the suction port formed in the slit shape Unevenness is likely to occur. This causes a problem that the suction capability of the suction port at a portion far from the connection portion of the pipe line to the vacuum chamber is insufficient.
  • the present invention has been made in view of the above circumstances and an object of the present invention is to obtain a vacuum cleaning head having a high degree of freedom in configuration and less unevenness in suction performance at the suction port.
  • the above-described problems include: a vacuum cleaning head; (a) a longitudinal suction portion having a slit-like suction port and being brought into contact with the lower surface of the screen mask via a cleaning sheet; A main vacuum chamber that is longer than the suction port and has a wider shape than the suction port, and is connected to the vacuum generator by a pipe line in a part of the longitudinal direction; (c) the main vacuum chamber and the suction unit A sub-vacuum chamber having a length equal to or longer than the suction port, and (d) air directed between the sub-vacuum chamber and the main vacuum chamber and directed from the main vacuum chamber to the sub-vacuum chamber.
  • This is solved by including a rectifying unit that rectifies the flow of the gas. It is desirable that the sub-vacuum chamber has a width gradually decreasing portion whose width gradually decreases from a lower opening communicating with the rectifying portion toward an upper opening communicating with the suction port.
  • the vacuum generation device can be provided separately from the main vacuum chamber. Therefore, there is an advantage that the degree of freedom of the configuration is great, but air is concentrated in a part of the main vacuum chamber in the longitudinal direction. Since the air is sucked, it is inevitable that the air flow direction and flow rate in the main vacuum chamber become non-uniform. However, since the rectification unit is provided between the main vacuum chamber and the sub-vacuum chamber, the uneven air flow in the longitudinal direction in the sub-vacuum chamber is alleviated.
  • the non-uniformity of the suction capability at the suction port is alleviated, and a vacuum cleaning head with a large degree of freedom in configuration and a low non-uniformity of the suction capability at the suction port can be obtained. If the sub-vacuum chamber has a gradually decreasing portion, the uneven air flow in the longitudinal direction of the suction port is particularly effectively reduced.
  • reference numeral 10 denotes a screen mask (hereinafter abbreviated as “mask”), and screen printing is performed by cream-like solder 12 (hereinafter abbreviated as “solder”) on the upper surface of this mask 10 as indicated by a two-dot chain line.
  • a circuit board under the mask 10) through a large number of small openings 16 (not shown) formed in the mask 10 by being pushed in the direction of the arrow along the upper surface of the mask 10 by the squeegee 14. This is performed by applying to the upper surface of (not shown).
  • the solder 12 may adhere to the peripheral portion of the small opening 16 on the lower surface of the mask 10 or the solder 12 may remain in a part of the small opening 16. Reduce print quality against.
  • a screen mask cleaning device 20 (hereinafter abbreviated as a cleaning device) shown in FIG. 1 is used.
  • the cleaning device 20 includes a vacuum cleaning head 22 (hereinafter, abbreviated as a cleaning head) and a head support 26 that supports the head and is moved along the mask 10 by the moving device 24.
  • a lifting device 28 is provided between the head support 26 and the cleaning head 22, and lifts and lowers the cleaning head 22 between a raised position in contact with the mask 10 and a lowered position spaced from the mask 10.
  • the cleaning device 20 further includes a sheet supply device 30.
  • the sheet supply device 30 includes a supply roll 34 that holds a long cleaning sheet 32 and feeds it from the start end, and a winding roll 38 that is driven by an electric motor 36 and winds up the used cleaning sheet 32. .
  • the cleaning head 22 is in contact with the lower surface of the mask 10 through a cleaning portion extending between the supply roll 34 and the take-up roll 38 of the cleaning sheet 32 in the raised position. Cleaning is performed by moving along the mask 10 while sucking air.
  • the cleaning head 22 has a suction part 42 having a slit-like suction port 40, and a sub-vacuum chamber 44 (hereinafter abbreviated as a sub-chamber) below the suction part 42. ), A rectification unit 46, and a main vacuum chamber 48 (hereinafter abbreviated as a main chamber).
  • the suction part 42, the sub-chamber 44, the rectifying part 46 and the main chamber 48 all have a longitudinal shape extending in a direction perpendicular to the moving direction of the cleaning head 22.
  • the mask 10 is not always formed with the small openings 16 in a state of being dispersed throughout, but is formed only in an area where the solder 12 of the circuit board is to be printed.
  • the suction port 40 and the suction part 42 are made into the length according to the width of the area
  • the sub chamber 44, the rectifying unit 46, and the main chamber 48 have a length corresponding to the widest mask 10. Therefore, although the suction port 40 and the suction part 42 may be shorter than the sub-chamber 44, the rectifying part 46, and the main chamber 48, the illustrated example is the cleaning head 22 that can clean the widest area. Are almost the same length.
  • the main chamber 48 is connected to the vacuum generator 52 shown in FIG. 1 by a hose which is a kind of pipe line in a part in the longitudinal direction. Therefore, the vacuum generating device 52 can be provided separately from the cleaning head 22 and there is an advantage that the degree of freedom of the configuration becomes high.
  • the hose connection portion 54 can be the central portion of the main chamber 48 in the longitudinal direction, which can reduce unevenness in suction capability, but is not sufficient.
  • the cleaning head 22 has a structure shown in FIG.
  • a rectifying unit 46 is provided between the main chamber 48 and the sub-chamber 44, and the sub-chamber 44 has a width gradually decreasing unit 60 that is wide on the main chamber 48 side and linearly narrows toward the suction port 40.
  • the constant width portion 62 extends to the suction port 40 with a constant width.
  • the rectifying unit 46 has a large number of pipes 64 arranged in a posture extending in parallel to the direction from the main chamber 48 to the sub-chamber 44, and a pair of flat plates 66 and 68 on both end faces thereof. Is fixed, and openings 70 are formed in portions of the flat plates 66 and 68 corresponding to the openings of the pipe 64.
  • One flat plate 66 closes the upper opening of the main chamber 48, and A flat plate 68 is provided in a state of closing the lower opening of the sub chamber 44.
  • a large number of pipes 64 are arranged in a staggered manner, and openings 70 are formed in the longitudinal flat plates 66 and 68 so as to be uniformly distributed in the width direction and the longitudinal direction.
  • the sub-chamber 44 is made of steel or hard synthetic resin, and the tip of the constant width portion 62 is the suction port 40.
  • elastic deformation portions 74 and 76 are provided on the both sides in the width direction of the suction port 40.
  • These elastic deformation portions 74 and 76 are formed by fixing a sponge material to the outer surface of the wall constituting the sub-chamber 44.
  • the cleaning head 22 is configured as described above, and the elastic deformation portions 74 and 76 are in close contact with the cleaning sheet 32 and the mask 10 on a wide surface, and the space in the cleaning head 22 extends from the main chamber 48 toward the suction port 40.
  • the rectifying section 46 is provided between the main chamber 48 and the sub-chamber 44, so that when the vacuum generator 52 is activated, the air is generally sucked into the suction port 40. From the hose connection portion 54 of the suction port 40 to the main chamber 48, air is satisfactorily sucked. As a result, the nonuniformity of the suction capability at the suction port 40 is reduced, and if the cleaning head 22 is moved along the lower surface of the mask 10, the entire region where the small openings 16 of the mask 10 are formed is cleaned well. .
  • FIG. 6 shows another embodiment of the present invention.
  • the rectifying unit 82 is constituted by the honeycomb 84.
  • the illustrated honeycomb 84 is formed by forming a large number of flow passages 86 penetrating through a thick plate in the thickness direction.
  • the present invention is not limited to this, and a plurality of bent thin plates may be joined at the wall portions of the thin plates that are in contact with each other to form a shape similar to the rectifying unit 82. According to this, a long channel 86 can be easily manufactured.
  • the cleaning head 80 is different from the cleaning head 22 also in the suction part 90. It is made of steel or hard synthetic resin, and a plurality of (three in the illustrated example) suction ports 92 are configured in parallel to each other. It has been experimentally confirmed that by adopting this configuration, the suction property of the cleaning sheet 32 and the mask 10 by the suction unit 90 is improved as compared with a suction unit having only one suction port. However, it is not excluded that the suction port 92 is made of an elastic material such as rubber.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Screen Printers (AREA)

Abstract

This vacuum cleaning head allows for a high degree of freedom in the configuring of a vacuum cleaning head that cleans the screen mask of a screen printer, and reduces unevenness in the suction capacity of a slit-shaped suction port. The vacuum cleaning head is provided with (a) an elongated suction section (42) that comprises a slit-shaped suction port (40) and that comes into contact with the lower surface of a screen mask via a cleaning sheet, (b) a main vacuum chamber (48) that has a greater length than the suction port and an elongated shape that is wider than the suction port, and that is connected at one section in the lengthwise direction thereof to a vacuum generation device by a pipe line, (c) a vacuum sub-chamber (44) that is provided between the main vacuum chamber and the suction section and that has a length equal to or greater than the length of the suction port, and (d) a flow regulation section (46) that is provided between the vacuum sub-chamber and the main vacuum chamber and that regulates the flow of air from the main vacuum chamber toward the vacuum sub-chamber.

Description

バキュームクリーニングヘッドVacuum cleaning head
　本発明は、多数の小開口が形成されたスクリーンマスクの上面に沿って、スキージによりクリーム状はんだを押送することにより、スクリーンマスクの下に重ねられた回路基板にクリーム状はんだを印刷するスクリーン印刷機用のバキュームクリーニングヘッドに関するものである。 The present invention relates to screen printing in which cream solder is printed on a circuit board stacked under the screen mask by pushing the cream solder along the upper surface of the screen mask in which a large number of small openings are formed. The present invention relates to a vacuum cleaning head for a machine.
　下記の特許文献１には、スクリーンマスクの下面にクリーニングシートを介して接触させられ、その下面に沿って移動させられることにより、スクリーンマスクの下面および小開口内のクリーム状はんだを除去するバキュームクリーニングヘッドが記載されている。 The following Patent Document 1 discloses a vacuum cleaning method in which the lower surface of the screen mask is brought into contact with the lower surface through a cleaning sheet and moved along the lower surface, thereby removing the cream-like solder in the lower surface of the screen mask and the small openings. The head is described.
特開平１０－１００３８８号公報Japanese Patent Application Laid-Open No. 10-1000038
　この種のバキュームクリーニングヘッドを、いずれも長手形状を有する吸引部とバキュームチャンバとを含むものとし、バキュームチャンバの長手方向の一部を別置きのバキューム発生装置にホース等の管路により接続すれば、バキューム発生装置をもバキュームクリーニングヘッドと一体的に構成する場合に比較して、構成の自由度が増す効果が得られるのであるが、反面、吸引部にスリット状に形成される吸引口に吸引力のむらが生じ易い。吸引口の、バキュームチャンバへの管路の接続部から遠い部分の吸引能力が不足する問題が発生するのである。
　本発明は、以上の事情を背景として、構成の自由度が高く、かつ、吸引口における吸引能力のむらの少ないバキュームクリーニングヘッドを得ることを課題として為されたものである。 If this type of vacuum cleaning head includes both a suction part having a longitudinal shape and a vacuum chamber, and a part of the vacuum chamber in the longitudinal direction is connected to a separate vacuum generator by a conduit such as a hose, Compared with the case where the vacuum generator is also integrated with the vacuum cleaning head, the effect of increasing the degree of freedom of the configuration can be obtained, but on the other hand, the suction force formed on the suction port formed in the slit shape Unevenness is likely to occur. This causes a problem that the suction capability of the suction port at a portion far from the connection portion of the pipe line to the vacuum chamber is insufficient.
The present invention has been made in view of the above circumstances and an object of the present invention is to obtain a vacuum cleaning head having a high degree of freedom in configuration and less unevenness in suction performance at the suction port.
　上記の課題は、バキュームクリーニングヘッドを、(a)スリット状の吸引口を有し、クリーニングシートを介して前記スクリーンマスクの下面に接触させられる長手形状の吸引部と、(b)長さが前記吸引口以上であり、幅が吸引口より広い長手形状を有し、長手方向の一部において管路によりバキューム発生装置に接続されるメインバキュームチャンバと、(c)そのメインバキュームチャンバと前記吸引部との間に設けられ、長さが前記吸引口以上であるサブバキュームチャンバと、(d)そのサブバキュームチャンバと前記メインバキュームチャンバとの間に設けられ、メインバキュームチャンバからサブバキュームチャンバに向かう空気の流れを整流する整流部とを含むものとすることにより解決される。
　サブバキュームチャンバは、整流部に連通する下部開口から吸引口に連通する上部開口に向かって幅が漸減する幅漸減部を有するものとされることが望ましい。 The above-described problems include: a vacuum cleaning head; (a) a longitudinal suction portion having a slit-like suction port and being brought into contact with the lower surface of the screen mask via a cleaning sheet; A main vacuum chamber that is longer than the suction port and has a wider shape than the suction port, and is connected to the vacuum generator by a pipe line in a part of the longitudinal direction; (c) the main vacuum chamber and the suction unit A sub-vacuum chamber having a length equal to or longer than the suction port, and (d) air directed between the sub-vacuum chamber and the main vacuum chamber and directed from the main vacuum chamber to the sub-vacuum chamber. This is solved by including a rectifying unit that rectifies the flow of the gas.
It is desirable that the sub-vacuum chamber has a width gradually decreasing portion whose width gradually decreases from a lower opening communicating with the rectifying portion toward an upper opening communicating with the suction port.
　上記構成のバキュームクリーニングヘッドにおいては、バキューム発生装置をメインバキュームチャンバとは別置きにできるため、構成の自由度が大きい利点がある反面、メインバキュームチャンバの長手方向の一部において空気が集中的に吸引されるため、メインバキュームチャンバ内の空気の流れ方向や流量が不均一になることを避け得ない。しかし、メインバキュームチャンバとサブバキュームチャンバとの間に整流部が設けられているため、サブバキュームチャンバ内の長手方向における空気の流れのむらが緩和される。それにより、吸引口における吸引能力のむらが緩和され、構成の自由度が大きく、かつ、吸引口における吸引能力のむらが少ないバキュームクリーニングヘッドが得られる。
　サブバキュームチャンバを幅漸減部を有するものとすれば、吸引口の長手方向における空気の流れのむらが特に効果的に緩和される。 In the vacuum cleaning head having the above-described configuration, the vacuum generation device can be provided separately from the main vacuum chamber. Therefore, there is an advantage that the degree of freedom of the configuration is great, but air is concentrated in a part of the main vacuum chamber in the longitudinal direction. Since the air is sucked, it is inevitable that the air flow direction and flow rate in the main vacuum chamber become non-uniform. However, since the rectification unit is provided between the main vacuum chamber and the sub-vacuum chamber, the uneven air flow in the longitudinal direction in the sub-vacuum chamber is alleviated. As a result, the non-uniformity of the suction capability at the suction port is alleviated, and a vacuum cleaning head with a large degree of freedom in configuration and a low non-uniformity of the suction capability at the suction port can be obtained.
If the sub-vacuum chamber has a gradually decreasing portion, the uneven air flow in the longitudinal direction of the suction port is particularly effectively reduced.
本発明の一実施形態であるバキュームクリーニングヘッドを含むスクリーンマスククリーニング装置を概略的に示す側面図である。It is a side view which shows roughly the screen mask cleaning apparatus containing the vacuum cleaning head which is one Embodiment of this invention. 上記バキュームクリーニングヘッドを示す斜視図である。It is a perspective view which shows the said vacuum cleaning head. 上記バキュームクリーニングヘッドの内部構造を示す斜視図である。It is a perspective view which shows the internal structure of the said vacuum cleaning head. 上記バキュームクリーニングヘッドの効果を説明するための概略正面断面図である。It is a schematic front sectional view for explaining the effect of the vacuum cleaning head. 上記バキュームクリーニングヘッドの効果を説明するための別の概略正面断面図である。It is another schematic front sectional drawing for demonstrating the effect of the said vacuum cleaning head. 本発明の別の実施形態であるバキュームクリーニングヘッドの内部構造を示す斜視図である。It is a perspective view which shows the internal structure of the vacuum cleaning head which is another embodiment of this invention.
　以下、本発明の実施形態を図を参照しつつ説明する。図１において、符号１０はスクリーンマスク(以下、マスクと略称する）を示し、スクリーン印刷は、二点鎖線で示すように、このマスク１０の上面にクリーム状はんだ１２（以下、はんだと略称する）を載せ、スキージ１４によりマスク１０の上面に沿って矢印の方向に押送することにより、マスク１０に形成された図示を省略する多数の小開口１６を通して、マスク１０の下に配置された回路基板（図示省略）の上面に塗布することにより行われる。この印刷の実行により、マスク１０の下面の小開口１６周辺部にはんだ１２が付着したり、小開口１６の一部にはんだ１２が残ったりすることがあり、これらのはんだ１２は次の回路基板に対する印刷品質を低下させる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 10 denotes a screen mask (hereinafter abbreviated as “mask”), and screen printing is performed by cream-like solder 12 (hereinafter abbreviated as “solder”) on the upper surface of this mask 10 as indicated by a two-dot chain line. And a circuit board (under the mask 10) through a large number of small openings 16 (not shown) formed in the mask 10 by being pushed in the direction of the arrow along the upper surface of the mask 10 by the squeegee 14. This is performed by applying to the upper surface of (not shown). By executing this printing, the solder 12 may adhere to the peripheral portion of the small opening 16 on the lower surface of the mask 10 or the solder 12 may remain in a part of the small opening 16. Reduce print quality against.
　この印刷品質の低下を防止するために、図１に示すスクリーンマスククリーニング装置２０（以下、クリーニング装置と略称する）が使用される。クリーニング装置２０はバキュームクリーニングヘッド２２（以下、クリーニングヘッドと略称する）と、それを支持するとともに移動装置２４によりマスク１０に沿って移動させられるヘッド支持台２６とを備えている。ヘッド支持台２６とクリーニングヘッド２２との間には昇降装置２８が設けられており、クリーニングヘッド２２をマスク１０に接触する上昇位置とマスク１０から離間する下降位置との間で昇降させる。 In order to prevent the deterioration of the printing quality, a screen mask cleaning device 20 (hereinafter abbreviated as a cleaning device) shown in FIG. 1 is used. The cleaning device 20 includes a vacuum cleaning head 22 (hereinafter, abbreviated as a cleaning head) and a head support 26 that supports the head and is moved along the mask 10 by the moving device 24. A lifting device 28 is provided between the head support 26 and the cleaning head 22, and lifts and lowers the cleaning head 22 between a raised position in contact with the mask 10 and a lowered position spaced from the mask 10.
　クリーニング装置２０はさらにシート供給装置３０を備えている。シート供給装置３０は、長尺のクリーニングシート３２を保持し、始端部から繰り出す供給ロール３４と、電動モータ３６により駆動され、使用済みのクリーニングシート３２を巻き取る巻取ロール３８とを備えている。クリーニングヘッド２２は、上昇位置においては、図１に示すように、クリーニングシート３２の供給ロール３４と巻取ロール３８との間に延びるクリーニング部を介してマスク１０の下面に接触し、その状態で空気を吸引しつつマスク１０に沿って移動し、クリーニングを行う。 The cleaning device 20 further includes a sheet supply device 30. The sheet supply device 30 includes a supply roll 34 that holds a long cleaning sheet 32 and feeds it from the start end, and a winding roll 38 that is driven by an electric motor 36 and winds up the used cleaning sheet 32. . As shown in FIG. 1, the cleaning head 22 is in contact with the lower surface of the mask 10 through a cleaning portion extending between the supply roll 34 and the take-up roll 38 of the cleaning sheet 32 in the raised position. Cleaning is performed by moving along the mask 10 while sucking air.
　クリーニングヘッド２２は、図２および図３に示すように、スリット状の吸引口４０を有する吸引部４２を有し、吸引部４２の下方には、サブバキュームチャンバ４４(以下、サブチャンバと略称する），整流部４６、メインバキュームチャンバ４８(以下、メインチャンバと略称する）が設けられている。吸引部４２，サブチャンバ４４，整流部４６およびメインチャンバ４８はいずれも、クリーニングヘッド２２の移動方向に直角な方向に延びる長手形状を有している。マスク１０は、常に全体に分散した状態で小開口１６が形成されるわけではなく、回路基板のはんだ１２を印刷すべき領域にのみ形成される。そして、吸引口４０および吸引部４２は、その小開口１６が形成された領域の広さに応じた長さとされる。それに対して、サブチャンバ４４，整流部４６およびメインチャンバ４８は最も広いマスク１０に対応した長さとされる。したがって、吸引口４０および吸引部４２は、サブチャンバ４４，整流部４６およびメインチャンバ４８より短くされることもあるが、図示の例は、最も広い領域をクリーニングし得るクリーニングヘッド２２であるため、すべての部分がほぼ同じ長さとなっている。 As shown in FIGS. 2 and 3, the cleaning head 22 has a suction part 42 having a slit-like suction port 40, and a sub-vacuum chamber 44 (hereinafter abbreviated as a sub-chamber) below the suction part 42. ), A rectification unit 46, and a main vacuum chamber 48 (hereinafter abbreviated as a main chamber). The suction part 42, the sub-chamber 44, the rectifying part 46 and the main chamber 48 all have a longitudinal shape extending in a direction perpendicular to the moving direction of the cleaning head 22. The mask 10 is not always formed with the small openings 16 in a state of being dispersed throughout, but is formed only in an area where the solder 12 of the circuit board is to be printed. And the suction port 40 and the suction part 42 are made into the length according to the width of the area | region in which the small opening 16 was formed. On the other hand, the sub chamber 44, the rectifying unit 46, and the main chamber 48 have a length corresponding to the widest mask 10. Therefore, although the suction port 40 and the suction part 42 may be shorter than the sub-chamber 44, the rectifying part 46, and the main chamber 48, the illustrated example is the cleaning head 22 that can clean the widest area. Are almost the same length.
　メインチャンバ４８は長手方向の一部分において、管路の一種であるホースにより図１に示すバキューム発生装置５２に接続されている。そのため、バキューム発生装置５２をクリーニングヘッド２２とは別置きとすることができ、構成の自由度が高くなる利点があるのであるが、反面、クリーニング時には、図４に示すように、空気の流れがホースの接続部５４に近い部分ほど多くなり、吸引口４０の吸引能力にむらが生じる傾向がある。ホースの接続部５４を図５に示すように、メインチャンバ４８の長手方向の中央部とすることも可能であり、それによって、吸引能力のむらを軽減し得るのであるが、十分とは言えない。 The main chamber 48 is connected to the vacuum generator 52 shown in FIG. 1 by a hose which is a kind of pipe line in a part in the longitudinal direction. Therefore, the vacuum generating device 52 can be provided separately from the cleaning head 22 and there is an advantage that the degree of freedom of the configuration becomes high. On the other hand, as shown in FIG. There is a tendency that the portion closer to the hose connection portion 54 increases and the suction capability of the suction port 40 becomes uneven. As shown in FIG. 5, the hose connection portion 54 can be the central portion of the main chamber 48 in the longitudinal direction, which can reduce unevenness in suction capability, but is not sufficient.
　そこで、本実施形態においては、クリーニングヘッド２２が図３に示す構造とされている。メインチャンバ４８とサブチャンバ４４との間に整流部４６が設けられるとともに、サブチャンバ４４が、メインチャンバ４８側の幅が広く、吸引口４０に向かうにしたがって直線的に狭くなる幅漸減部６０と、一定の幅で吸引口４０まで延びる一定幅部６２とから成っている。整流部４６は、図３から明らかなように、多数のパイプ６４が、それぞれメインチャンバ４８からサブチャンバ４４に向かう方向に平行に延びる姿勢で配列され、それらの両端面に一対の平板６６，６８が固定されるとともに、それら平板６６，６８の、パイプ６４の各開口に対応する部分に開口７０が形成されたものであり、一方の平板６６がメインチャンバ４８の上部開口を閉塞し、他方の平板６８がサブチャンバ４４の下部開口を閉塞する状態で設けられている。多数のパイプ６４は千鳥配置されており、長手形状の平板６６，６８には、開口７０が幅方向および長手方向に均一に分散して形成されている。 Therefore, in the present embodiment, the cleaning head 22 has a structure shown in FIG. A rectifying unit 46 is provided between the main chamber 48 and the sub-chamber 44, and the sub-chamber 44 has a width gradually decreasing unit 60 that is wide on the main chamber 48 side and linearly narrows toward the suction port 40. The constant width portion 62 extends to the suction port 40 with a constant width. As is clear from FIG. 3, the rectifying unit 46 has a large number of pipes 64 arranged in a posture extending in parallel to the direction from the main chamber 48 to the sub-chamber 44, and a pair of flat plates 66 and 68 on both end faces thereof. Is fixed, and openings 70 are formed in portions of the flat plates 66 and 68 corresponding to the openings of the pipe 64. One flat plate 66 closes the upper opening of the main chamber 48, and A flat plate 68 is provided in a state of closing the lower opening of the sub chamber 44. A large number of pipes 64 are arranged in a staggered manner, and openings 70 are formed in the longitudinal flat plates 66 and 68 so as to be uniformly distributed in the width direction and the longitudinal direction.
　サブチャンバ４４は鋼あるいは硬質合成樹脂により形成されており、一定幅部６２の先端が吸引口４０となっているのであるが、この吸引口４０の幅方向の両側には弾性変形部７４，７６が設けられている。これら弾性変形部７４，７６はスポンジ材がサブチャンバ４４を構成する壁の外側面に固定されて成り、吸引口４０がクリーニングシート３２を介してマスク１０に接触させられる際、弾性変形して吸引部４２の密着性を向上させる。 The sub-chamber 44 is made of steel or hard synthetic resin, and the tip of the constant width portion 62 is the suction port 40. On the both sides in the width direction of the suction port 40, elastic deformation portions 74 and 76 are provided. Is provided. These elastic deformation portions 74 and 76 are formed by fixing a sponge material to the outer surface of the wall constituting the sub-chamber 44. When the suction port 40 is brought into contact with the mask 10 via the cleaning sheet 32, the elastic deformation portions 74 and 76 are elastically deformed and sucked. The adhesion of the part 42 is improved.
　本クリーニングヘッド２２は以上のように構成され、弾性変形部７４、７６が広い面でクリーニングシート３２およびマスク１０に密着する上、クリーニングヘッド２２内の空間が、メインチャンバ４８から吸引口４０の向うに従って横断面積が徐々に減少させられる上、メインチャンバ４８とサブチャンバ４４との間に整流部４６が設けられているため、バキューム発生装置５２が作動させられられたとき、空気は概して吸引口４０からメインチャンバ４８に向かう向きに流れ、吸引口４０の、メインチャンバ４８に対するホースの接続部５４から最も離れた部分においても空気が良好に吸引される。それによって、吸引口４０における吸引能力の不均一が軽減され、クリーニングヘッド２２がマスク１０の下面に沿って移動させられれば、マスク１０の小開口１６が形成された領域全体が良好に清掃される。 The cleaning head 22 is configured as described above, and the elastic deformation portions 74 and 76 are in close contact with the cleaning sheet 32 and the mask 10 on a wide surface, and the space in the cleaning head 22 extends from the main chamber 48 toward the suction port 40. And the rectifying section 46 is provided between the main chamber 48 and the sub-chamber 44, so that when the vacuum generator 52 is activated, the air is generally sucked into the suction port 40. From the hose connection portion 54 of the suction port 40 to the main chamber 48, air is satisfactorily sucked. As a result, the nonuniformity of the suction capability at the suction port 40 is reduced, and if the cleaning head 22 is moved along the lower surface of the mask 10, the entire region where the small openings 16 of the mask 10 are formed is cleaned well. .
　本発明の別の実施形態を図６に示す。この実施形態のクリーニングヘッド８０においては整流部８２がハニカム８４によって構成されている。図示のハニカム８４は、厚板にそれを厚さ方向に貫通する多数の流路８６が千鳥状に形成されたものである。しかし、これに限定されるものではなく、長尺の薄板を曲げ加工したものを複数枚、それら薄板の互いに接触する壁部において接合して整流部８２に類似の形状としてもよく、この方法によれば、流路８６の長いものを容易に製造し得る。 FIG. 6 shows another embodiment of the present invention. In the cleaning head 80 of this embodiment, the rectifying unit 82 is constituted by the honeycomb 84. The illustrated honeycomb 84 is formed by forming a large number of flow passages 86 penetrating through a thick plate in the thickness direction. However, the present invention is not limited to this, and a plurality of bent thin plates may be joined at the wall portions of the thin plates that are in contact with each other to form a shape similar to the rectifying unit 82. According to this, a long channel 86 can be easily manufactured.
　クリーニングヘッド８０は吸引部９０においても前記クリーニングヘッド２２と異なっている。鋼あるいは硬質合成樹脂により形成され、複数（図示の例では３つ）の吸引口９２が互いに平行に構成されているのである。この構成とすることにより、吸引部９０によるクリーニングシート３２およびマスク１０の吸着性が、吸引口が１つのみの吸引部に比較して良好になることが実験により確認されている。ただし、吸引口９２をゴム等の弾性材料により構成することを排除するものではない。 The cleaning head 80 is different from the cleaning head 22 also in the suction part 90. It is made of steel or hard synthetic resin, and a plurality of (three in the illustrated example) suction ports 92 are configured in parallel to each other. It has been experimentally confirmed that by adopting this configuration, the suction property of the cleaning sheet 32 and the mask 10 by the suction unit 90 is improved as compared with a suction unit having only one suction port. However, it is not excluded that the suction port 92 is made of an elastic material such as rubber.
　１０：スクリーンマスク(マスク）　　１６：小開口　　２０：スクリーンマスククリーング装置（クリーング装置）　　２２：バキュームクリーニングヘッド（クリーニングヘッド）　　２４：移動装置　　２６：ヘッド支持台　　２８：昇降装置　　３０：シート供給装置　　３２：クリーニングシート　　４０：吸引口　　４２：吸引部　　４４：サブバキュームチャンバ(サブチャンバ）　　４６：整流部　　４８：メインバキュームチャンバ(メインチャンバ）　　５２：バキューム発生装置　　５４：接続部　　６０：幅漸減部　　６４：パイプ　　６６，６８：平板　　７０：開口　　７４，７６：弾性変形部　　９０：吸引部　　９２：吸引口 10: Screen mask (mask) 16: Small opening 20: Screen mask cleaning device (cleaning device) 22: Vacuum cleaning head (cleaning head) 24: Moving device 26: Head support base 28: Lifting device 30: Sheet feeding device 32: Cleaning sheet 40: Suction port 42: Suction part 44: Sub vacuum chamber (sub chamber) 46: Rectification part 48: Main vacuum chamber (main chamber) 52: Vacuum generator 54: Connection part 60: Width reduction part 64: Pipe 66 , 68: Flat plate 70: Opening 74, 76: Elastic deformation part 90: Suction part 92: Suction port

Claims (3)

  1. 　多数の小開口が形成されたスクリーンマスクの上面に沿って、スキージによりクリーム状はんだを押送することにより、スクリーンマスクの下に重ねられた回路基板にクリーム状はんだを印刷するスクリーン印刷機の、スクリーンマスクを清掃するバキュームクリーニングヘッドであって、
    　スリット状の吸引口を有し、クリーニングシートを介してスクリーンマスクの下面に接触させられる長手形状の吸引部と、
    　長さが前記吸引口以上であり、幅が吸引口より広い長手形状を有し、長手方向の一部において管路によりバキューム発生装置に接続されるメインバキュームチャンバと、
    　そのメインバキュームチャンバと前記吸引部との間に設けられ、長さが前記吸引口以上であるサブバキュームチャンバと、
    　そのサブバキュームチャンバと前記メインバキュームチャンバとの間に設けられ、メインバキュームチャンバからサブバキュームチャンバに向かう空気の流れを整流する整流部と
    　を含むことを特徴とするバキュームクリーニングヘッド。     The screen of a screen printing machine for printing cream solder on a circuit board stacked under the screen mask by pushing cream solder with a squeegee along the upper surface of the screen mask in which a large number of small openings are formed A vacuum cleaning head for cleaning the mask,
    A longitudinal suction part that has a slit-like suction port and is brought into contact with the lower surface of the screen mask via a cleaning sheet;
    A main vacuum chamber having a longitudinal shape longer than the suction port and having a width wider than that of the suction port and connected to the vacuum generator by a pipe line in a part of the longitudinal direction;
    A sub-vacuum chamber provided between the main vacuum chamber and the suction part and having a length equal to or longer than the suction port;
    A vacuum cleaning head, comprising: a rectifying unit that is provided between the sub vacuum chamber and the main vacuum chamber and rectifies the flow of air from the main vacuum chamber toward the sub vacuum chamber.
  2. 　前記整流部が、多数のパイプが前記メインバキュームチャンバから前記吸引口に向かう姿勢で配列されるとともに、それらパイプの両端に板材が固定され、かつ、それら板材の各パイプの各開口に対応する部分に開口が形成されて成る請求項１に記載のバキュームクリーニングヘッド。 The rectifying unit includes a plurality of pipes arranged in a posture from the main vacuum chamber toward the suction port, plate members fixed to both ends of the pipes, and portions corresponding to the openings of the pipes of the plate members. The vacuum cleaning head according to claim 1, wherein an opening is formed in the vacuum cleaning head.
  3. 　前記サブバキュームチャンバが、前記整流部に連通する下部開口から、前記吸引口に連通する上部開口に向かって幅が漸減する幅漸減部を有する請求項１または２に記載のバキュームクリーニングヘッド。 The vacuum cleaning head according to claim 1 or 2, wherein the sub-vacuum chamber has a width gradually decreasing portion whose width gradually decreases from a lower opening communicating with the rectifying portion toward an upper opening communicating with the suction port.
PCT/JP2012/075100 2012-09-28 2012-09-28 Vacuum cleaning head WO2014049837A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103991279A (en) * 2014-05-30 2014-08-20 苏州倍辰莱电子科技有限公司 Automatic steel mesh washing device
JP2016196101A (en) * 2015-04-02 2016-11-24 パナソニックＩｐマネジメント株式会社 Screen printer
JP2019155678A (en) * 2018-03-12 2019-09-19 パナソニックＩｐマネジメント株式会社 Screen printer

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Publication number Priority date Publication date Assignee Title
JPH09193362A (en) * 1996-01-19 1997-07-29 Matsushita Electric Ind Co Ltd Screen printing device of cream solder
JPH10193577A (en) * 1997-01-08 1998-07-28 Matsushita Electric Ind Co Ltd Screen cleaning method and device in screen printing
JP2011073352A (en) * 2009-09-30 2011-04-14 Fuji Mach Mfg Co Ltd Cleaning apparatus for screen mask

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09193362A (en) * 1996-01-19 1997-07-29 Matsushita Electric Ind Co Ltd Screen printing device of cream solder
JPH10193577A (en) * 1997-01-08 1998-07-28 Matsushita Electric Ind Co Ltd Screen cleaning method and device in screen printing
JP2011073352A (en) * 2009-09-30 2011-04-14 Fuji Mach Mfg Co Ltd Cleaning apparatus for screen mask

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103991279A (en) * 2014-05-30 2014-08-20 苏州倍辰莱电子科技有限公司 Automatic steel mesh washing device
JP2016196101A (en) * 2015-04-02 2016-11-24 パナソニックＩｐマネジメント株式会社 Screen printer
JP2019155678A (en) * 2018-03-12 2019-09-19 パナソニックＩｐマネジメント株式会社 Screen printer
JP7015995B2 (en) 2018-03-12 2022-02-04 パナソニックＩｐマネジメント株式会社 Screen printing device

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