WO2005018935A1 - スクリーン印刷装置 - Google Patents
スクリーン印刷装置 Download PDFInfo
- Publication number
- WO2005018935A1 WO2005018935A1 PCT/JP2004/011753 JP2004011753W WO2005018935A1 WO 2005018935 A1 WO2005018935 A1 WO 2005018935A1 JP 2004011753 W JP2004011753 W JP 2004011753W WO 2005018935 A1 WO2005018935 A1 WO 2005018935A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screen
- squeegee
- solder
- printing
- cream solder
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1216—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by screen printing or stencil printing
- H05K3/1233—Methods or means for supplying the conductive material and for forcing it through the screen or stencil
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
- H05K2203/0139—Blade or squeegee, e.g. for screen printing or filling of holes
Definitions
- the present invention relates to a screen printing apparatus, and more particularly to a method for screen printing of cream solder, in which a portion of the cream solder flows in a direction substantially perpendicular to the moving direction of the squeegee and leaks out from both ends of the squeegee. Screen printing device to prevent.
- a copper foil is bonded to a surface of a board made of an insulating material as a circuit board, a predetermined wiring pattern is formed by etching, and an electronic component is formed thereon.
- a method is used in which components are mounted and electrodes and terminals of electronic components are soldered to connection lands of a wiring pattern on a circuit board.
- Cream solder is used to connect the electrodes of such electronic components to the connection lands of the circuit board. That is, cream solder is printed and adhered to a predetermined position on the surface of the circuit board on which the wiring has been provided by using a screen printing technique.
- the conventional screen printing apparatus 100 has a squeegee assembly 110 in which a squeegee 104 is attached to a squeegee holder 101 by a squeegee holder 106 and solder leak guides 102 are attached to the squeegee holder 101 at both ends of the squeegee.
- the cream solder 105 In the printing of the cream solder 105, after the printed board 107 comes into contact with the back surface of the screen 103, the cream solder 105 on the screen 103 is moved down the squeegee assembly, and the squeegee 104 is pressed on the screen 103, and the The squeegee assembly 110 is driven in the printing direction, and the squeegee 104 is slid on the screen 103 for printing.
- the cream solder 105 is filled in the printing opening of the screen 103 and printed on the printed board 107.
- the printing opening is an opening on the screen provided for printing the cream solder 105 on the printing substrate 107.
- the cream solder 105 Since the cream solder 105 has high viscosity, it is twisted between the screen 103 and the squeegee 104 as the squeegee 104 slides during the printing process, and rolls on the printed circuit board 107 in the printing direction while moving in the direction perpendicular to the moving direction.
- the fluid flows in the direction of arrow G in FIG. 1 and leaks out of the squeegee width in the direction of arrow H in FIG. 1, ie, out of the printing range. Therefore, a solder leakage guide 102 is provided to prevent the cream solder 105 from leaking out of the printing range.
- a guide as a means for preventing solder leakage attached to both ends of the squeegee has a configuration in which the solder leakage guide 102 is in contact with the screen 103, and a certain gap is provided between the solder leakage guide 102 and the screen 103. It is known that the cream solder 105 is twisted between the squeegee 104 and the screen 103, pushed out of the squeegee, and protrudes from the solder leakage guide 102 as the number of printed sheets overlaps. An inevitable mistake.
- the squeegee itself has a complicated configuration, which leads to an increase in cost. Furthermore, as shown in FIG. 3, when the squeegee 104 is lifted at the end of printing, solder adheres to the inner side surface of the solder leakage guide, and when the squeegee 104 descends for the next printing, this solder removes the solder as shown in FIG. There is a possibility that the sheet may be caught between the leak guide 102 and the screen 103 and leak out of the printing range. As described above, the solder 108 adhered to the guide and the solder 109 protruding from the guide are oxidized with time, become unusable, and are discarded. This is a waste of manufacturing costs and In addition to waste of resources, considering the disposal treatment, the environmental impact was also great.
- An object of the present invention is to provide a novel screen printing apparatus which can solve the problems of the conventional screen printing apparatus as described above.
- Another object of the present invention is to prevent a part of the coating material from flowing in the direction perpendicular to the moving direction of the squeegee and leaking out of the printing range from both ends of the squeegee when screen-printing the paste-like coating material. It is an object of the present invention to provide a screen printing device that can prevent such a problem.
- the paste-like coating agent supplied on the screen is slid on the screen by a squeegee provided inclining in the sliding direction, and is slid on the screen to pass through the opening provided in the screen to the lower side of the screen.
- a screen printing device for applying to an adherend arranged in contact with the squeegee, at least one partition means provided substantially perpendicular to a contact sliding surface between the squeegee and the screen, and provided at both ends of the squeegee. And a coating agent regulating guide inclined toward the center of the printing area determined by the squeegee width with respect to the perpendicular of the screen plane, and a coating agent leakage prevention means in which the contact area with the screen is protected by an elastic material.
- the partitioning means twists the coating agent between the screen and the squeegee together with the sliding operation, and flows on the screen in a direction substantially perpendicular to the sliding direction. The phenomenon that the flowing coating material leaks out of the printing area outside the squeegee width is prevented by the coating material leakage prevention means.
- the squeegee and / or the coating material regulating guide are formed so as to have a curved surface facing the printing area with a concave surface, and the partitioning means is provided at a predetermined angle with respect to the sliding direction.
- a resin material can be used as the elastic member.
- cream solder is used as an application agent, and a circuit board is used as an adherend, and the present invention is applied to cream solder printing of a printed wiring board.
- the coating material is twisted between the screen and the squeegee along with the sliding operation, and is substantially perpendicular to the sliding direction on the screen. Fluid flows in the direction Leakage outside the printing range outside the page width can be prevented.
- the coating material regulation guide in the coating material leakage prevention means when the squeegee is lifted at the end of printing, the coating material attached to the inner side surface of the coating material leakage prevention means is returned to the printing area side. Even if the squeegee is lowered for printing, there is no danger of the coating material being sandwiched between the coating material leakage prevention means and the screen and leaking out of the printing range. In addition, this makes it possible to reduce the cost waste caused by the coating agent that has been discarded because it has not been used for printing and can no longer be used.
- the squeegee and the Z or the coating material regulating guide form a curved surface facing the printing region with a concave surface, the return of the coating material to the printing region is improved.
- the partitioning means is provided at a predetermined angle with respect to the sliding direction, the squeegees are opposed to each other on the screen, and the squeegee is moved to the adherend by the reciprocating operation.
- the coating material twisted between the two squeegees by the reciprocating operation is made uniform in the printing area, and the coating material unevenness can be eliminated.
- FIG. 1 is a front view showing a squeegee portion of a conventional screen printing device.
- FIG. 2 is a sectional view taken along the line II-II of FIG. 1.
- FIG. 3 is a side view showing a state in which solder adheres to an inner side surface of a solder leakage guide when a squeegee is lifted at the end of printing by a conventional screen printing apparatus.
- FIG. 4 is a side view showing a cream solder printing apparatus according to the present invention.
- FIG. 5 is a perspective view showing a squeegee assembly in the cream solder printing apparatus.
- FIG. 6 is a front view of the squeegee assembly as viewed from a sliding direction.
- FIG. 7 is a sectional view taken along line VII-VII in FIG.
- FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 6.
- FIG. 9 is a side view showing the appearance of cream solder adhering to the solder control guide when the squeegee is raised.
- FIG. 10 is a front view of another example of the squeegee assembly according to the present invention as viewed from the sliding direction.
- FIG. 11 is a sectional view taken along line XI-XI in FIG.
- FIG. 12 is a cross-sectional side view illustrating the flow of cream solder when the comb blade member is inclined by a predetermined angle with respect to the sliding direction in the direction of arrow A in FIGS. 7 and 8. is there.
- the screen printing apparatus to which the present invention is applied is a cream solder printing apparatus for a printed wiring board that applies cream solder to a connection land of a wiring pattern on a circuit board, and a printing range from both ends of a squeegee of the terminal solder printing apparatus. It proposes a mechanism to reduce the amount of solder protruding outside.
- the movement of the solder being twisted between the squeegee and the screen due to the sliding operation of the squeegee and flowing out of the printing range is regulated by providing the comb blade member.
- solder leakage prevention guides are provided at both ends of the squeegee, and solder restriction guides are provided on the solder leakage prevention guides. It was prevented from leaking out of the printing area.
- the screen printing apparatus 1 is shown in FIG. 4, and FIG.
- the cream paste printing apparatus 1 has a carry-in conveyor 11, a conveyor belt 12, and a discharge conveyor 13 as a structure for carrying the circuit board 51 into and out of the apparatus. Further, as a mechanism for printing cream solder on the circuit board, a screen 21, a frame 22 for fixing the screen 21, a frame 23 for supporting the frame 22, a base 31 having a movable portion, and
- the squeegee assembly 30 includes squeegees 33a and 33b provided opposite to each other.
- the carry-in conveyor 11 and the conveyor belt 12 shown in FIG. 4 are operated to introduce the circuit board 51 onto the conveyor belt, stop at a predetermined position, and stop the conveyor belt 12. Then, after positioning and correcting the circuit board 51, the screen 21 and the circuit board 51 are connected.
- the circuit board 51 is raised in the direction of arrow F in FIG. In this state, the squeegees 33a and 33b slide on the screen in the direction of arrow A in FIG. 4 to print the cream solder 52.
- the circuit board 51 is separated from the screen 21 and lowered to the conveyor belt 12, and the conveyor belt 12 and the discharge conveyor 13 are moved together to discharge the circuit board 51 on which the solder printing is completed.
- the squeegee assembly 30 is a main component for applying cream solder on a circuit board, and includes a squeegee holder 32, a squeegee 33, and a squeegee holder.
- the squeegee holder 32 has an inclined surface SO in a sliding direction in the direction of arrow A shown in FIG. 5, and a squeegee 33 is attached to the inclined surface SO by a squeegee holder 34.
- the squeegee assembly 30 is connected to the cream solder printing apparatus main body via a driving portion, and the squeegee 33 is pressed against the screen 21 at a constant pressure during a sliding operation. Accordingly, the squeegee 33 is pressed by a predetermined pressure at a predetermined inclination angle and slides on the screen 21 in the direction of arrow A in FIG.
- the squeegee assembly 30 When the squeegee assembly 30 is driven, the squeegee 33 slides on the screen 21, and the cream solder 52 supplied on the screen 21 is stretched on the screen 21 by the squeegee 33, and the opening on the screen 21 is opened. Is applied to a circuit board 51 disposed in contact with the lower side of the screen 21.
- the cream solder printing apparatus 1 includes the squeegee assembly 30 having the comb blade member 35 and the solder leakage prevention guide 36.
- the comb blade member 35 partitions the solder solder 52 on the screen 21 substantially perpendicularly to the contact sliding surface between the squeegee 33 and the screen 21, and moves between the screen 21 and the squeegee 33 with the sliding operation of the squeegee 33. This suppresses the phenomenon that the cream solder 52 is twisted and flows on the screen 21 in a direction substantially perpendicular to the sliding direction in the direction of arrow B in FIG.
- the comb blade member 35 is provided such that a slight gap is left between the comb blade member 35 and the screen 21. This is because, when the comb blade member 35 comes into contact with the screen 21, printing cannot be performed if there is a screen opening directly below the comb blade member 35. Even if the screen opening is not formed on the lower surface of the comb blade member 35, the cream solder 52 is Since the amount used, that is, the amount of reduction is different depending on the amount of the screen opening, a configuration that completely separates, that is, a configuration in which the comb blade member 35 is brought into contact with the screen 21 and slid, is used in each case. It becomes necessary to control the supply amount of the cream solder between the partitions. Therefore, an interval is required between the comb blade member 35 and the screen 21 so that the cream solder 52 can flow back and forth between the partitions while suppressing the flow to the outside of the printing area.
- the number of the comb blade members 35 is not limited to three.
- the solder leakage prevention guide 36 is provided at both ends of the squeegee 33 and has a solder regulation guide 37. As shown in FIGS. 6 and 9, the solder regulation guide 37 is inclined inward toward the center of the printing range determined by the squeegee width with respect to the perpendicular of the plane of the screen 21, so that the arrow in FIG. The cream solder 52 flowing in the B direction is returned to the printing area side by the solder regulation guide 37, thereby preventing the flowing cream solder 52 from leaking out of the printing area outside the squeegee width.
- solder regulation guide 37 when the squeegee is lifted in the direction of arrow C at the end of printing, the solder attached to the inner side surface of the solder leakage guide is returned so as to be laid low inside the printing area.
- the squeegee is lowered for printing, there is no possibility that the cream solder will be caught between the solder leak prevention guide 36 and the screen 21 and leak out of the printing range.
- the contact portion of the solder leakage prevention guide 36 with the screen 21 is protected by an elastic material.
- a resin material is used as the elastic member.
- the solder regulating guide 37 and the squeegee 33 may be formed so as to have a curved surface facing the printing area with a concave surface. Further, a curved surface may be formed so as to eliminate the angle formed by the squeegee 33 and the squeegee holder 34, that is, the angle formed by the surfaces S1 and S2 shown in the side view of FIG. This improves the torsion of the cream solder, and the cream solder 52 accumulates in the space created by the squeegee 33 and the squeegee holder 34, that is, the space created by the S1 and S2 surfaces shown in Fig. 7, making it unusable. The state can be prevented.
- the comb blade member 35 may be provided at a predetermined angle with respect to the sliding direction in the direction of the arrow A in FIGS.
- the comb blade member 35 when performing printing processing by reciprocating operation with the squeegee 33a and the squeegee 33b facing each other, the comb blade member 35 is provided at a predetermined angle to the sliding direction.
- the cream solder force twisted between both squeegees is indicated by the arrow D in FIG. 12 or the arrow. Since it flows in the E direction, the cream solder is made uniform in the printing area, and unevenness in the amount of cream solder supplied can be eliminated.
- the cream solder printing apparatus 1 of the present invention it is possible to prevent the solder from leaking out of the printing area, so that it is not used for printing conventionally, is oxidized and becomes unusable, and is discarded. Further, it is possible to reduce unnecessary cost waste of cream solder.
- the present invention provides a screen printing apparatus that fills a printing opening of a screen with a coating agent by a sliding operation of a squeegee and prints on an adherend provided in contact with the lower surface of the screen.
- the present invention can be applied without being limited to the mode of wearing.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Screen Printers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/563,304 US7373879B2 (en) | 2003-08-22 | 2004-08-16 | Screen printing apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003299267A JP2005067005A (ja) | 2003-08-22 | 2003-08-22 | スクリーン印刷装置 |
JP2003-299267 | 2003-08-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005018935A1 true WO2005018935A1 (ja) | 2005-03-03 |
Family
ID=34213750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/011753 WO2005018935A1 (ja) | 2003-08-22 | 2004-08-16 | スクリーン印刷装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7373879B2 (ja) |
JP (1) | JP2005067005A (ja) |
TW (1) | TWI261027B (ja) |
WO (1) | WO2005018935A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103640329A (zh) * | 2013-11-28 | 2014-03-19 | 弘益泰克自动化设备(惠州)有限公司 | 一种锡膏供给装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4643719B2 (ja) * | 2009-02-09 | 2011-03-02 | ヤマハ発動機株式会社 | はんだ供給装置、印刷装置および印刷方法 |
JP5471860B2 (ja) * | 2010-06-11 | 2014-04-16 | パナソニック株式会社 | スクリーン印刷機 |
EP2689930B2 (en) | 2012-07-23 | 2020-03-18 | Komori Corporation | Liquid supply apparatus |
CN106585069A (zh) * | 2016-12-23 | 2017-04-26 | 武汉华星光电技术有限公司 | 柔性基板、面板及丝网印刷机制作柔性基板、面板的方法 |
CN107584867B (zh) * | 2017-11-06 | 2019-01-18 | 鹤山源昌电子科技有限公司 | 一种防止锡膏氧化的电路板锡膏印刷机 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07178887A (ja) * | 1993-12-24 | 1995-07-18 | Toshiba Corp | 印刷装置 |
JPH0839766A (ja) * | 1994-08-03 | 1996-02-13 | Niyuurongu Seimitsu Kogyo Kk | インキ幅保持機能付スクリーン印刷機用スキージユニット |
JPH08207243A (ja) * | 1995-10-26 | 1996-08-13 | Sony Corp | スクリーン印刷機におけるスキージブロック |
JPH11245376A (ja) * | 1998-03-02 | 1999-09-14 | Ricoh Co Ltd | スキージ、スクリーン塗布方法及び装置 |
JP2001287337A (ja) * | 2000-04-07 | 2001-10-16 | Sanyo Electric Co Ltd | スクリーン印刷機 |
JP2003025544A (ja) * | 2001-07-13 | 2003-01-29 | Murata Mfg Co Ltd | スクレーパおよびそれを用いたスクリーン印刷機 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5392705A (en) * | 1994-03-25 | 1995-02-28 | Precision Screen Machines, Inc. | Flood bar and squeegee for printing apparatus |
JP3378985B2 (ja) | 1998-10-30 | 2003-02-17 | ワイケイケイエーピー株式会社 | 建 具 |
US6142070A (en) * | 1999-04-08 | 2000-11-07 | M&R Printing Equipment, Inc. | Ink deflector for squeegee on printing machine |
-
2003
- 2003-08-22 JP JP2003299267A patent/JP2005067005A/ja not_active Withdrawn
-
2004
- 2004-07-28 TW TW093122582A patent/TWI261027B/zh not_active IP Right Cessation
- 2004-08-16 WO PCT/JP2004/011753 patent/WO2005018935A1/ja active Application Filing
- 2004-08-16 US US10/563,304 patent/US7373879B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07178887A (ja) * | 1993-12-24 | 1995-07-18 | Toshiba Corp | 印刷装置 |
JPH0839766A (ja) * | 1994-08-03 | 1996-02-13 | Niyuurongu Seimitsu Kogyo Kk | インキ幅保持機能付スクリーン印刷機用スキージユニット |
JPH08207243A (ja) * | 1995-10-26 | 1996-08-13 | Sony Corp | スクリーン印刷機におけるスキージブロック |
JPH11245376A (ja) * | 1998-03-02 | 1999-09-14 | Ricoh Co Ltd | スキージ、スクリーン塗布方法及び装置 |
JP2001287337A (ja) * | 2000-04-07 | 2001-10-16 | Sanyo Electric Co Ltd | スクリーン印刷機 |
JP2003025544A (ja) * | 2001-07-13 | 2003-01-29 | Murata Mfg Co Ltd | スクレーパおよびそれを用いたスクリーン印刷機 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103640329A (zh) * | 2013-11-28 | 2014-03-19 | 弘益泰克自动化设备(惠州)有限公司 | 一种锡膏供给装置 |
Also Published As
Publication number | Publication date |
---|---|
TWI261027B (en) | 2006-09-01 |
TW200520955A (en) | 2005-07-01 |
JP2005067005A (ja) | 2005-03-17 |
US7373879B2 (en) | 2008-05-20 |
US20060272521A1 (en) | 2006-12-07 |
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