WO2009150906A1 - クリーニング装置及びスクリーン印刷装置 - Google Patents
クリーニング装置及びスクリーン印刷装置 Download PDFInfo
- Publication number
- WO2009150906A1 WO2009150906A1 PCT/JP2009/058204 JP2009058204W WO2009150906A1 WO 2009150906 A1 WO2009150906 A1 WO 2009150906A1 JP 2009058204 W JP2009058204 W JP 2009058204W WO 2009150906 A1 WO2009150906 A1 WO 2009150906A1
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- WIPO (PCT)
- Prior art keywords
- cleaning
- scraper
- screen mask
- screen
- printing
- Prior art date
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Classifications
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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
- B41F35/005—Cleaning arrangements or devices for screen printers or parts thereof for flat screens
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- 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
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- 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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/26—Cleaning or polishing of the conductive pattern
Definitions
- the present invention relates to a cleaning device used for a screen printing apparatus used for a printed wiring board or the like and the screen printing apparatus.
- Screen printing etc. are used for pattern printing, solder resist printing, numbering printing, through hole printing in the circuit formation process of printed wiring board, cream solder printing in mounting process, exterior (chassis, name plate, operation panel) printing ing.
- a paste-like material such as ink or solder paste is applied onto a surface to be printed of a substrate via a screen mask on which a printing pattern is drawn, transferred and printed. That is, by sliding the squeegee on the screen mask, the paste-like material is transferred to the substrate and printed. Thus, the paste-like material is applied to the substrate through the opening pattern.
- the paste-like material in the opening leaks from the opening and adheres to the back surface of the screen mask.
- This leakage occurs particularly when a low viscosity paste-like material is used, and is a phenomenon in which the residual paste-like material drips from the wall surface of the opening by gravity and wraps around the back surface of the screen mask.
- the adhered residual paste-like material is transferred to a substrate, it causes defects in the application position and the application shape, and in the case of a circuit board, it causes a quality defect such as a bridge.
- a substrate which is a substrate there is a substrate as shown in FIG.
- a plurality of mounting components 101 are mounted on the first surface 100 a of the substrate 100.
- a silk ink layer 104 to be subjected to silk printing for marking is provided.
- the substrate 100 When printing the solder paste 105 of a predetermined pattern on such a substrate 100, the substrate 100 is supported by the backup pins 106 for preventing the substrate from warping. Then, the screen mask 107 is brought into close contact with the surface to be printed (the other surface 100 b), and the squeegee 108 is slid on the screen mask 107 to transfer and print the solder paste 105. At this time, the surface of the substrate 100 is uneven due to the silk ink layer 104 and the like, and when the solder paste 105 is applied to the surface via the screen mask 107, the screen mask 107 and the printing position of the substrate 100 In the meantime, a micron-order gap is generated. Bleeding of the solder paste 105 into this gap is called exudation, and when printing is performed in a state where this exfoliation has occurred, this has caused defects in the application position and the application shape, and poor quality such as a bridge.
- a cleaning mechanism for the back surface of the screen mask As a cleaning mechanism for the back surface of the screen mask, a method using cleaning paper to wipe off residual paste-like material, or using a scraper made of a plate-like member instead of wiping the back surface of the screen mask with paper There is also a method using a method of scraping off the paste-like material adhering to the back surface.
- An object of the present invention is to provide an apparatus and a screen printing apparatus.
- the cleaning device cleans one surface of the screen mask on the side opposite to the work on which the printing pattern for printing the pattern is formed on the work.
- the cleaning unit since the cleaning unit has a scraper having an uneven surface portion, the cleaning unit brings cleaning paper into contact with one surface of the screen mask and slides one surface of the screen mask through the cleaning paper. Cleaning can be performed at high speed as compared with a cleaning method of wiping with cleaning paper. Therefore, the printing tact of a short time can be realized compared with the past. In addition, cleaning can be performed for each printing step without reducing the printing tact, and high-quality printing can be stably performed without reducing the printing quality.
- the cleaning paper slides on one surface of the screen mask using the scraper having the uneven surface portion, the amount of cleaning paper used in one cleaning process can be reduced.
- FIG. 1 is a schematic view of a screen printing apparatus to which the present invention is applied, viewed from the front direction.
- FIG. 2 is a schematic view of the cleaning unit, in which (A) shows the scraper in the lowered position, and (B) shows the scraper in the raised position.
- FIG. 3 is a perspective view of the cleaning unit.
- FIGS. 4A and 4B are diagrams for explaining a regulating piece and an eccentric cam for regulating the elevation of the scraper of the cleaning unit
- FIG. 4A is a partial plan view of the cleaning unit
- FIG. It is a partial perspective view.
- FIG. 5 is a schematic plan view for explaining raising and lowering of the scraper of the cleaning unit.
- FIG. 6 is a perspective view of the transport means.
- FIG. 1 is a schematic view of a screen printing apparatus to which the present invention is applied, viewed from the front direction.
- FIG. 2 is a schematic view of the cleaning unit, in which (A) shows the scraper in the lowered position,
- FIG. 7 is an enlarged plan view of an essential part of a plate member of the scraper.
- FIG. 8 is a view showing another embodiment of the scraper.
- FIG. 9 is a flowchart for explaining the operation of the screen printing apparatus.
- FIG. 10 shows the relationship between the cleaning speed and the degree of cleanliness, in which (A) uses a cleaning paper with a fiber density of 30 g / m 2 and (B) shows a cleaning paper with a fiber density of 60 g / m 2 It is a figure when using.
- FIG. 11 is a cross-sectional view of a substrate for explaining bleeding in screen printing.
- FIG. 1 is a schematic view of a screen printing apparatus 1 to which the present invention is applied, viewed from the front direction.
- the screen printing apparatus 1 is relative to the screen mask 11 on which a printing pattern for printing a pattern on the workpiece 2 is formed, the screen support 12 for supporting the screen mask 11, and the screen mask 11.
- a cleaning unit 14 which is conveyed between the stage 13 supporting the work 2 and the stage 13 and the screen mask 11 and cleans one surface 11 c of the screen mask 11 on the side facing the work 2;
- Conveying means 15 for conveying the cleaning unit 14 from one end to the other end of one surface 11c of the screen mask 11 and control means 16 for controlling the operation of each means.
- the screen printing apparatus 1 adjusts the relative position of the work 2 and the screen mask 11 by alignment means (not shown), and the ink or solder is drawn through the screen mask 11 on which the print pattern is drawn on the work 2 as a printed wiring board. A paste-like material such as a paste is applied, transferred and printed. Specifically, the screen printing apparatus 1 has a squeegee 3 in sliding contact with the surface of the screen mask 11, and the paste-like material supplied on the screen mask 11 is worked by conveying the squeegee 3 in a predetermined direction. Extrude printing on 2.
- the screen printing apparatus 1 retracts the printed work 2 and until the next printing step, the cleaning unit 14 is extended from one end to the other end of the screen mask 11 by the transport unit 15, for example, as shown in FIG.
- the sheet is conveyed in the x direction 1 and the one surface 11 c of the screen mask 11 is cleaned.
- the relative position of the workpiece 2 and the screen mask 11 is detected by a camera for photographing an alignment point provided on the workpiece 2, and the position of the stage 13 is detected based on the detection result. Any combination may be used as long as the relative position between the workpiece 2 and the screen mask 11 can be adjusted.
- the transport direction of the cleaning unit 14 is x direction
- the direction parallel to the screen mask 11 and orthogonal to the x direction is y direction
- the direction orthogonal to the screen mask 11 is z direction.
- the workpiece 2 used in the screen printing apparatus 1 is a substrate, and is, for example, a printed wiring board.
- the work 2 is not limited to the printed wiring board, and any work may be used as long as it is suitable for printing by applying and transferring a paste-like material or the like through the screen mask 11.
- the screen mask 11 is formed of a sheet material 11a and a frame-like member 11b surrounding and stretching the sheet material 11a, and is, for example, a metal mask in which an opening is provided in a predetermined print pattern.
- the screen mask 11 is fixed at a predetermined position by the screen support 12 on the outer periphery on which the printing pattern is formed.
- the screen support 12 is a member that supports and fixes the frame-like member 11 b of the screen mask 11.
- the stage 13 is a stage to which the work 2 is fixed, and can be operated in the xyz direction by a transport mechanism (not shown). Specifically, as shown in FIG. 1, the stage 13 is separated from the screen mask 11 and can operate in the xy direction at a position where the cleaning unit 14 can move between the cleaning units 14. However, when retracted from between the stage 13 and the screen mask 11, that is, after alignment of the work 2 in the xy plane is completed, it can be operated in the z direction. Further, the stage 13 has a holding mechanism for holding the workpiece 2 by suction, and can move the workpiece 2 as the stage 13 moves.
- the stage 13 moves in the xy direction when the relative position between the screen mask 11 and the stage 13 is detected by alignment means (not shown), and moves in the x direction after alignment in the xy direction is completed when performing alignment. Do.
- the stage 13 is not limited to operating in the z direction after alignment in the xy plane is completed, and may be configured to move in the xyz direction after alignment.
- the cleaning unit 14 has a cleaning paper 21 in contact with one surface 11 c of the screen mask 11 and a scraper 22 sliding on the one surface 11 c of the screen mask 11 through the cleaning paper 21.
- scraper moving means 23 for moving the scraper 22 to the sliding position of the screen mask 11 and moving it from the sliding position to the screen mask 11, which are mounted in parallel to the y direction and attached to the main body 26 consisting of a substantially rectangular parallelepiped It is done.
- the cleaning unit 14 is provided with suction means 24 for suctioning the adhered paste-like material by suctioning the one surface 11 c of the screen mask 11 through the cleaning paper 21.
- the cleaning unit 14 has a solvent dripping means 25 for dripping a solvent onto the cleaning paper 21 in order to wipe off the flux or the like attached to one surface 11 c of the screen mask 11 by the cleaning paper 21.
- the cleaning paper 21 is brought into contact with one surface 11 c of the screen mask 11 by the scraper 22, and the cleaning unit 14 is transported in the x direction on the xy plane by the transport unit 15.
- the residual paste-like material adhering to the surface 11c is wiped off and cleaned.
- the cleaning paper 21 in contact with one surface 11 c of the screen mask 11 has a long shape capable of entangling residual paste-like material such as cream solder or fine solid foreign matter attached to the one surface 11 c of the screen mask 11. It is made of non-woven fabric and wound in a roll.
- the cleaning paper 21 is wound around a delivery reel 27 and a take-up reel 28 provided in the main body portion 26, and is abutted against one surface 11 c of the screen mask 11 by the scraper 22.
- the cleaning paper 21 is fed from the delivery reel 27 to the upper surface 26 a of the main body 26 facing the one surface 11 c of the screen mask 11, and is disposed so as to be wound around the take-up reel 28.
- the delivery reel 27 and the take-up reel 28 provided in the main body portion 26 take up and deliver the cleaning paper 21 to be wound by drive means (not shown).
- the scraper 22 of the cleaning unit 14 is a blade-like member provided in parallel with the longitudinal direction of the main body 26, that is, in the y direction.
- the scraper 22 is provided with an uneven surface portion 22 b formed of unevenness on the upper end surface 22 a that abuts on the cleaning paper 21.
- the uneven surface portion 22b of the scraper 22 is formed by a linear ridge or groove extending in the longitudinal direction of the upper end surface 22a, and a plurality of convex or concave grooves of the linear are formed on the upper end surface 22a. There is.
- the scraper 22 is formed by overlapping a plurality of plate members 29 in parallel in the x direction, which is the sliding direction.
- the plate-like member 29 of the scraper 22 is formed of a flexible plate material such as, for example, a thin steel plate having a thickness of about 0.3 mm.
- the plate 29 is narrower than its thickness and has a ridge 29a which is in contact with the cleaning paper 21 securely. It is done.
- the scraper 22 forms the uneven surface portion 22 b by stacking a plurality of plate-like members 29 each having a protruding portion 29 a.
- the scraper 22 forms a unit 30 in which three plate members 29 are juxtaposed in the sliding direction (x direction) of one surface 11 c of the screen mask 11, and the two units 30, 30 form the spacer 31. It is disposed in parallel at a predetermined distance in the x direction, for example, 0.5 mm to 1.3 mm.
- the spacer 31 is a plate-like member having a thickness of about 0.5 mm to 1.3 mm and a height sufficiently lower than that of the plate-like member 29.
- the spacer 31 is disposed on the lower end side in the height direction (z direction) of the plate-like member 29 so that the plate-like member 29 can be bent on the upper end side.
- the scraper 22 is formed of resin or the like between the two units 30 and 30 disposed via the spacer 31, and is sandwiched by the plate-like members 32, 32 whose height is lower than that of the plate-like member 29.
- the scraper 22 is movably fixed to one side surface of the main body 26 and moved to a contact position where the scraper moving unit 23 contacts the one surface 11 c of the screen mask 11 via the cleaning paper 21, and the conveying unit 15
- One surface 11 c of the screen mask 11 is in sliding contact in the x direction, and the one surface 11 c of the screen mask 11 is cleaned.
- the scraper 22 slides the convex portion of the uneven surface portion 22b, that is, the convex portion 29a of the plate-like member 29 against the cleaning paper 21 surely against the surface 11c of the screen mask 11,
- the residual paste-like material and the like attached to one surface 11 c of the screen mask 11 can be reliably entangled by the cleaning paper 21. Further, since the scraper 22 has a small contact area with the cleaning paper 21, sliding at high speed can be realized, and the amount of use of the cleaning paper 21 in one cleaning can be reduced.
- the two units 30, 30 are disposed with a predetermined distance by the spacer 31, so that the contact with the cleaning paper 21 can be maintained in a line contact, and the cleaning performance is improved.
- the sliding property to realize the cleaning at high speed can be secured.
- each plate-like member 29 can be bent independently at the upper end in the height direction (z direction), and the brushing effect is generated when sliding by the conveying means 15. The scraping of the remaining paste-like material is also improved by this.
- the scraper 22 has been described that the unit 30 formed by overlapping the plurality of plate members 29 in parallel in the sliding direction is formed with a gap of two, the invention is not limited thereto. One may be provided.
- the scraper 22 is not limited to one unit 30 being formed by overlapping a plurality of plate members 29, but as shown in (A) of FIG. It is also good. Further, as shown in FIG. 8B, the scraper 22 is provided with a cut 22c of a predetermined depth between the adjacent ridges of the uneven surface 22b shown in FIG. A plurality of the plate-like members 29 shown in FIG. 3 may be stacked on the end face 22 a side to have a bending function like the plate-like member 29. Furthermore, when the scraper 22 is formed by overlapping a plurality of plate-like members 29, it is not limited to the formation of the protrusion 29a at the upper end of the plate-like member 29, as shown in FIG. The upper end of the plate member 29 may be provided with a tapered pointed portion 29b, and a plurality of the plate members 29 may be stacked.
- the scraper 22 preferably has the same or more flexibility as compared to the screen mask 11. Further, it is preferable that the scraper 22 is formed in an arc shape so that a longitudinal direction orthogonal to the conveyance direction (x direction) of the cleaning unit 14, that is, the approximate center of the y direction protrudes toward the screen mask 11 (see FIG. See 8 (D).). By making the scraper 22 arc-shaped in this way, the scraper can be brought into close contact also in the vicinity of the central portion of the screen mask 11 that is most deflected, and a cleaning effect can be obtained.
- the scraper moving means 23 includes, as shown in FIG. 4, an eccentric cam 33 for moving up and down one end 22d side of the scraper 22 in the longitudinal direction (y direction), and a cam drive means 33a for rotationally driving the eccentric cam 33. And consists of The scraper 22 moved up and down by the scraper moving means 23 is pivoted about the pivot shaft 22f provided on the other end 22e side in the longitudinal direction to be lifted and lowered.
- the eccentric cam 33 of the scraper moving means 23 is rotatably attached below the one end 22 d of the scraper 22 on the side surface of the main body 26 on which the scraper 22 is provided.
- the eccentric cam 33 is rotationally driven, for example, by a cam drive means 33a comprising a motor, slides on the lower end of the scraper 22 in the height direction (z direction), and rotates the scraper 22 about a pivot shaft 22f.
- a cam drive means 33a comprising a motor
- the scraper moving means 23 raises and lowers the upper end of the scraper 22 so that it faces the upper side of the upper surface 26 a of the main body 26, that is, the screen mask 11 side. Thus, at the time of cleaning, only the scraper 22 slides on one surface 11 c of the screen mask 11.
- the scraper moving means 23 is provided with a restriction piece 23a for restricting the elevation position of the scraper 22.
- the restriction piece 23a is provided with an opening 23b through which one end 22d of the scraper 22 is inserted.
- the restricting piece 23a restricts the amount of rotation of the scraper 22 when the one end 22d of the scraper 22 abuts on the upper end side and the lower end side of the opening 23b.
- the scraper moving means 23 is provided with an eccentric cam 33 and is not limited to a mechanism for moving the scraper 22 up and down by rotation of the eccentric cam 33.
- a cylinder motor is provided instead of the eccentric cam 33.
- the scraper 22 may be raised and lowered by driving the cylinder motor.
- the scraper moving means 23 is not limited to the provision of the eccentric cam 33 on the one end 22d side of the scraper 22, but may be closer to the pivot shaft 22f.
- the suction means 24 is connected to an air suction device (not shown) via a suction pipe 24 a provided in the main body 26.
- the suction pipe 24a of the suction means 24 is connected to an opening 26b provided parallel to the longitudinal direction of the scraper 22 in the sliding direction (x direction) of the scraper 22 on the upper surface 26a of the main body 26 Suction is performed through the opening 26b.
- the opening 26 b faces the one surface 11 c of the screen mask 11 via the cleaning paper 21. For this reason, the suction means 24 sucks the cleaning paper 21 and holds the residual paste-like material adhering to the cleaning paper 21.
- the solvent dropping means 25 is a dropping device for dropping the solvent onto the cleaning paper 21 at a position retracted from the lower part of the screen mask 11 when the cleaning unit 14 does not perform the cleaning as shown in FIG.
- the solvent to be dropped by the solvent dropping means 25 is a solvent capable of dissolving foreign matter such as flux attached to one surface 11c of the screen mask 11, and is, for example, IPA (isopropyl alcohol) or a stencil cleaner.
- the solvent dropping means 25 is not limited to the one in which the solvent is dropped at the retracted position of the cleaning unit 14 as described above, and for example, it is attached to the main body 26 to impregnate the cleaning paper 21 with the solvent It is also good.
- the plate-like members 29 of the scraper 22 are abutted against the direction (y direction) orthogonal to the sliding direction of the one surface 11 c of the screen mask 11. You may Further, the plate-like member 29 of the scraper 22 may be in contact with one surface 11 c of the screen mask 11 with its longitudinal direction inclined with respect to the x direction which is the conveyance direction of the cleaning unit 14. .
- the inclination angle of the scraper 22 with respect to the x direction and the y direction may be an angle at which the residual paste-like material adhering to one surface 11 c of the screen mask 11 can be wiped off efficiently. It changes with the conveyance speed of the cleaning unit 14, the material of the paste-like material to be used, a viscosity, etc.
- the conveying means 15 for conveying the cleaning unit 14 in the x direction is a support for supporting the main body 26 on the side on which the pivot shaft 22f of the bottom surface 26c of the main body 26 is pivotally supported, as shown in FIGS.
- 36 a lead screw 37, a nut member 38 pivotally supported by the lead screw 37 and coupled to the support bracket 34, and a servomotor 39 coupled to one end of the lead screw 37 and rotationally driving the lead screw 37. ing.
- the support bracket 34 is a substantially L-shaped member in cross section that includes a plate-like member 34 a disposed on the xy plane and a plate-like member 34 b disposed on the xz plane.
- the support bracket 34 is fixed to the main body 26 at the plate-like member 34 a. Further, the support bracket 34 is provided with a pair of slider members 36, 36 formed on the plate-like member 34b in a substantially U-shaped cross section.
- the guide rails 35 are a pair of guide members that are extended in the x direction, which is the conveyance direction of the cleaning unit 14. Sliders 36, 36 are attached to the guide rails 35, 35, and the sliders 36, 36 slide.
- the lead screw 37 is connected to the support bracket 34 via a nut member 38, is rotationally driven by driving the servomotor 39, and transports the support bracket 34 in the x direction.
- the servomotor 39 is servo-controlled in accordance with a control signal from the control means 16 so that the support bracket 34 can be moved to a desired position.
- the transport means 15 supports the main body 26 of the cleaning unit 14 in a so-called cantilever state
- the present invention is not limited to this.
- a pair of support brackets 34 is provided in the y direction to support in a so-called double support state. It may be a mechanism.
- the conveying means 15 may convey using any known conveying delivery stage without being limited to providing and conveying the lead screw 37.
- the control means 16 is a means for controlling the entire screen printing apparatus 1, and more specifically, controls timings and the like in each process such as conveyance of the squeegee 3, driving and conveyance of the cleaning unit 14, conveyance of the stage 13 and the like.
- step S1 the control means 16 sets the work 2 on the stage 13, controls the conveyance means on the xy plane of the stage 13, and conveys the stage 13 to a position opposite to the screen mask 11.
- step S2 the control means 16 controls the transport means of the stage 13 in the z direction, transports the stage 13 subjected to the alignment in the xy plane in the z direction, and the screen mask 11 and the work 2
- the squeegee 3 is made to slide on the surface of the screen mask 11 so that the paste-like material is transferred to the work 2 and printed.
- step S ⁇ b> 3 the control unit 16 transports the stage 13 and removes the work 2 whose printing has been completed from the stage 13.
- the control means 16 controls the scraper moving means 23 with the retraction of the stage 13 to bring the scraper 22 into contact with one surface 11 c of the screen mask 11 through the cleaning paper 21.
- the control means 16 controls the transport means 15 to transport the cleaning unit 14 in the transport direction (x direction) and slide the scraper 22 on one surface 11 c of the screen mask 11. The remaining paste-like material adhering to the surface 11c of the surface is entwined.
- the screen printing apparatus 1 drives the suction unit 24 to convey the residual paste-like material attached to one surface 11 c of the screen mask 11 when the conveyance unit 15 conveys in the x direction. Good. Furthermore, the screen printing apparatus 1 may control the solvent dropping unit 25 to drop the solvent onto the cleaning paper 21 at the front stage of driving the transport unit 15.
- step S4 the control means 16 controls the delivery reel 27 and the take-up reel 28, takes up the cleaning paper 21 facing the scraper 22, and ends one printing tact.
- the control means 16 can perform screen printing on the work 2 by repeating the above steps.
- FIG. 10 is a view showing the relationship between the cleaning speed in the screen printing apparatus 1 and the degree of cleanliness of the screen mask 11.
- the cleaning speed on the horizontal axis of FIG. 10 indicates the transport speed of the transport means 15.
- the degree of cleanliness on the vertical axis is a value obtained by measuring the number of particles per unit area of the solder paste remaining on one surface 11 c of the screen mask 11 when cleaning is performed using the screen printing apparatus 1.
- the cleaning unit 14 is formed by stacking three 0.3 mm-wide plate members 29 described in FIG. 7 to form a unit 30, and the two units 30 are separated by 1.3 mm.
- the scraper 22 was used.
- the cleaning paper 21 two types of continuous long fibers of the nonwoven fabric (Bemliese TF307 (manufactured by Asahi Kasei Corporation)) fiber density 30 g / m 2 at, 60 g / m 2, a different paper thicknesses in each of the fiber density It was used for cleaning.
- Bemliese TF307 manufactured by Asahi Kasei Corporation
- the cleaning unit 14 of the screen printing apparatus 1 needs a constant cleaning speed to maintain high quality even if the cleaning paper 21 under any conditions is used. I understand. Specifically, in the case where the quality of cleanliness level of 5 particles / mm 2 or less is maintained, a transfer speed of about 150 mm / s to 250 mm / s can be realized.
- the cleaning unit 14 of the screen printing apparatus 1 realizes high-speed cleaning while maintaining high quality.
- the cleaning can be performed within a time such as while the work 2 for which the printing is finished is evacuated. Cleaning can be performed within the tact, that is, cleaning can be performed each time without loss of tact time.
- the cleaning unit 14 causes the cleaning paper 21 to abut the one surface 11c of the screen mask 11 by the scraper 22, the amount of paper used in one cleaning can be reduced, which is economical It is.
- the screen printing apparatus 1 mentioned above is one Embodiment, It is needless to say that it is used for various embodiment, unless it is contrary to the meaning of this invention.
- a plurality of scrapers 22 in the cleaning unit 14 may be juxtaposed in the transport direction. In this way, it is possible to reliably scrape off residual paste-like material which can not be scraped off by one scraper.
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- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Screen Printers (AREA)
Abstract
Description
Claims (7)
- ワークに対してパターンを印刷する印刷パターンが形成されたスクリーンマスクの、該ワークと対向する側の一の面のクリーニングを行うクリーニングユニットと、
上記クリーニングユニットを、上記スクリーンマスクの一の面の一端から他端へ搬送させる搬送手段とを備え、
上記クリーニングユニットは、上記スクリーンマスクの一の面と接するクリーニングペーパと、該クリーニングペーパを該スクリーンマスクの一の面に当接させ、該クリーニングペーパを介して該スクリーンマスクの一の面を摺動する、凹凸面部を有するスクレーパと、該スクレーパを上記当接位置に移動させるスクレーパ移動手段とを有するクリーニング装置。 - 上記スクレーパは、複数の板状部材を、上記スクリーンマスクの一の面の摺動方向に重ね合わせ並列されたユニットからなる請求項1記載のクリーニング装置。
- 上記スクレーパは、上記ユニットを複数有し、該ユニットが上記スクリーンマスクの一の面の摺動方向に所定距離を隔てて並列されている請求項2記載のクリーニング装置。
- 上記クリーニングペーパに、クリーニング液を滴下するクリーニング液滴下手段と、
上記クリーニングペーパを介して、上記スクリーンマスクの一の面を吸引する吸引手段とを備える請求項1記載のクリーニング装置。 - 上記吸引手段は、上記クリーニングユニットのスクレーパの摺動方向前段で、該スクレーパに近接した位置に配設される請求項4記載のクリーニング装置。
- 上記スクレーパ移動手段は、上記スクレーパの一端側を支点にし、他端側を上記当接位置に移動させる移動手段である請求項1記載のスクリーン印刷装置。
- ワークに対してパターンを印刷する印刷パターンが形成されたスクリーンマスクと、
上記スクリーンマスクの、上記ワークと対向する側の一の面のクリーニングを行うクリーニングユニットと、
上記クリーニングユニットを、上記スクリーンマスクの一の面の一端から他端へ搬送させる搬送手段とを備え、
上記クリーニングユニットは、上記スクリーンマスクの一の面と接するクリーニングペーパと、該クリーニングペーパを該スクリーンマスクの一の面に当接させ、該クリーニングペーパを介して該スクリーンマスクの一の面を摺動する、凹凸面部を有するスクレーパと、該スクレーパを上記当接位置に移動させるスクレーパ移動手段とを有するスクリーン印刷装置。
Priority Applications (2)
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CN2009801200676A CN102046383B (zh) | 2008-06-10 | 2009-04-24 | 清洁装置和丝网印刷装置 |
US12/736,810 US8590450B2 (en) | 2008-06-10 | 2009-04-24 | Cleaning apparatus and screen printing apparatus |
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JP2008-152074 | 2008-06-10 | ||
JP2008152074A JP5407187B2 (ja) | 2008-06-10 | 2008-06-10 | クリーニング装置及びスクリーン印刷装置 |
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PCT/JP2009/058204 WO2009150906A1 (ja) | 2008-06-10 | 2009-04-24 | クリーニング装置及びスクリーン印刷装置 |
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US (1) | US8590450B2 (ja) |
JP (1) | JP5407187B2 (ja) |
KR (1) | KR20110028582A (ja) |
CN (1) | CN102046383B (ja) |
WO (1) | WO2009150906A1 (ja) |
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US8863659B2 (en) | 2010-04-27 | 2014-10-21 | Fuji Machine Mfg. Co., Ltd. | Screen printing line and screen printing method |
US8919248B2 (en) | 2010-04-27 | 2014-12-30 | Fuji Machine Mfg. Co., Ltd. | Screen printing machine |
CN108909164A (zh) * | 2018-08-15 | 2018-11-30 | 朱保平 | 一种适用于批量处理的油墨分布均匀的丝网印刷设备 |
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Also Published As
Publication number | Publication date |
---|---|
CN102046383A (zh) | 2011-05-04 |
JP5407187B2 (ja) | 2014-02-05 |
JP2009297922A (ja) | 2009-12-24 |
US20110061549A1 (en) | 2011-03-17 |
KR20110028582A (ko) | 2011-03-21 |
US8590450B2 (en) | 2013-11-26 |
CN102046383B (zh) | 2013-11-27 |
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