WO2020261970A1 - Workpiece holding device and screen printing machine - Google Patents

Workpiece holding device and screen printing machine Download PDF

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Publication number
WO2020261970A1
WO2020261970A1 PCT/JP2020/022603 JP2020022603W WO2020261970A1 WO 2020261970 A1 WO2020261970 A1 WO 2020261970A1 JP 2020022603 W JP2020022603 W JP 2020022603W WO 2020261970 A1 WO2020261970 A1 WO 2020261970A1
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WO
WIPO (PCT)
Prior art keywords
clamper
work
clampers
substrate
top clamper
Prior art date
Application number
PCT/JP2020/022603
Other languages
French (fr)
Japanese (ja)
Inventor
礒端　美伯
大川　浩二
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN202080044766.3A priority Critical patent/CN114007864B/en
Priority to DE112020003163.2T priority patent/DE112020003163T5/en
Priority to JP2021528100A priority patent/JPWO2020261970A1/ja
Publication of WO2020261970A1 publication Critical patent/WO2020261970A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0804—Machines for printing sheets
    • B41F15/0813—Machines for printing sheets with flat screens
    • B41F15/0818—Machines for printing sheets with flat screens with a stationary screen and a moving squeegee
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0881—Machines for printing on polyhedral articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/26—Supports for workpieces for articles with flat surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors
    • B41F15/423—Driving means for reciprocating squeegees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/50—Screen printing machines for particular purposes
    • 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
    • H05K2203/0147—Carriers and holders
    • H05K2203/0165—Holder for holding a Printed Circuit Board [PCB] during processing, e.g. during screen printing
    • 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

Definitions

  • the present disclosure relates to a work holding device that clamps and holds both end faces of a work such as a substrate, and a screen printing machine having this work holding device.
  • a screen printing machine that applies a paste such as solder to a substrate as a work is known.
  • the screen printing machine holds the substrate by the substrate holding mechanism.
  • the screen printing machine brings the mask plate into contact with the upper surface of the held substrate.
  • the paste is applied to the upper surface of the substrate through the pattern holes provided in the mask plate.
  • the substrate holding mechanism of such a screen printing machine has a push-up portion that pushes up the substrate and a pair of side clampers that clamp both end faces of the substrate pushed up by the push-up portion from the side. This substrate holding mechanism brings the substrate in a state where both end surfaces are clamped by a pair of side clampers into contact with the mask plate.
  • the substrate holding mechanism of such a screen printing machine there is a substrate holding mechanism in which a pair of top clampers are provided at predetermined overhang positions above the pair of side clampers.
  • the upper surfaces of both ends of the pushed-up substrate come into contact with the top clamper from below (for example, Patent Document 1).
  • the height of the lower surface of the top clamper is set to be the same as the height of the upper surface of the side clamper, so that the height of the upper surface of the pushed-up substrate is the height of the upper surface of the side clamper.
  • the substrate can be clamped at the same height. Therefore, when the substrate is brought into contact with the mask plate, the degree of adhesion between the two becomes high, and the printing accuracy in the screen printing machine can be improved.
  • the pair of top clampers is projected from the storage position on the outside of the pair of side clampers (the side where the two top clampers are separated from each other) to the overhang position above the side clampers. It is configured. Therefore, the movement path when moving the top clamper between the storage position and the overhanging position is extremely long. Therefore, the mechanism for moving the top clamper becomes large, and the overall size of the screen printing machine may increase.
  • the present disclosure provides a work holding device capable of moving the top clamper in a compact configuration and suppressing an increase in size of the device as a whole, and a screen printing machine including the work holding device.
  • the work holding device includes a push-up portion, a first side clamper, a second side clamper, a side clamper drive portion, a first top clamper, a second top clamper, and a top clamper moving portion. And have.
  • the push-up portion is configured to push up the work.
  • the first side clamper and the second side clamper are configured to clamp the work pushed up by the push-up portion on the opposite end surfaces of the work.
  • the side clamper drive unit is configured to clamp both end surfaces of the work to the first and second side clampers.
  • the first top clamper is configured to move between the first retracted position and the first overhanging position above the first side clamper
  • the second top clamper is configured to move between the second retracted position and the second side. It is configured to move to and from the second overhang position above the clamper.
  • the top clamper moving unit moves the first top clamper between the first storage position and the first extension position, and moves the second top clamper between the second storage position and the second extension position. It is configured to move.
  • a first storage space for storing the first top clamper located at the first storage position is provided on the upper surface side of the first side clamper
  • a second storage space located at the second storage position is provided on the upper surface side of the second side clamper. 2
  • a second storage space for storing the top clamper is provided.
  • the upper surface of the work at one of both ends of the work pushed up by the push-up portion abuts on the first top clamper from below. Then, at the second overhanging position, the upper surface of the work at the other end of both ends of the work pushed up by the push-up portion abuts on the second top clamper from below.
  • the screen printing machine includes the work holding device, a mask plate, and a squeegee.
  • the mask plate is provided with a pattern hole.
  • the mask plate is configured to contact the top surface of the work clamped by the pair of side clampers of the work holding device.
  • the squeegee is configured to slide on the mask plate in contact with the upper surface of the work and scrape the paste on the mask plate to apply the paste to the upper surface of the work through the pattern holes.
  • the top clamper can be moved in a compact configuration, and the device can be suppressed from becoming large as a whole.
  • FIG. Front view of the screen printing machine shown in FIG. Side view of the screen printing machine shown in FIG.
  • FIG. An operation explanatory view of the screen printing machine shown in FIG.
  • the screen printing machine 1 applies a paste such as solder paste to the electrode pattern 2D formed on the upper surface of the substrate 2.
  • the screen printing machine 1 has a base 11, a stage 12, a substrate holding mechanism 13 as a work holding device, a carry-in conveyor 14, a carry-out conveyor 15, a mask plate 16, a squeegee moving mechanism 17, two squeegees 18, and a camera 19. ing.
  • the left and right sides as seen from the worker OP shown in FIG. 1 are defined as the X-axis, and the front and back as seen from the worker OP are defined as the Y-axis.
  • the top and bottom are the Z-axis.
  • the stage 12 is provided on the base 11.
  • the stage 12 includes a Y-axis drive unit 12a, an X-axis drive unit 12b, a ⁇ -axis drive unit 12c, a Z-axis drive unit 12d, and a moving stage 12e.
  • the moving stage 12e is located at the top of the stage 12.
  • the Y-axis drive unit 12a moves the moving stage 12e along the Y-axis
  • the X-axis drive unit 12b drives the moving stage 12e along the X-axis.
  • the ⁇ -axis drive unit 12c rotates the moving stage 12e around the Z-axis
  • the Z-axis drive unit 12d moves the moving stage 12e along the Z-axis.
  • the substrate holding mechanism 13 is provided on the moving stage 12e. As shown in FIG. 3, the substrate holding mechanism 13 includes a lower receiving unit 21, an elevating motor 22, a pair of front and rear conveyor support members 23, an intermediate conveyor 24, a side clamper 25, and a clamp cylinder 26, respectively. ..
  • the lower receiving unit 21 is located above the moving stage 12e and has a plate-shaped base portion 21a at the lower part.
  • the elevating motor 22 raises and lowers the entire lower receiving unit 21 by raising and lowering the base portion 21a with respect to the moving stage 12e.
  • Each of the conveyor support members 23 extends upward from the upper surface of the moving stage 12e, penetrates the base portion 21a, and extends upward.
  • FIG. 4 is a perspective view showing a part of the substrate holding mechanism 13.
  • the intermediate conveyor 24 is provided on the conveyor support member 23 on a one-to-one basis.
  • the intermediate conveyor 24 supports both ends of the substrate 2 in the extending direction of the Y-axis from below and conveys the substrate 2 along the X-axis to position the substrate 2.
  • the side clampers 25 are provided one-to-one on the upper end of the conveyor support member 23.
  • the side clampers 25 are arranged so that the side end faces face each other in the front-rear direction.
  • the side clamper 25 is composed of a plate-shaped member extending along the X axis.
  • the dimensions of the side clamper 25 along the X axis are set larger than the maximum length along the X axis of the substrate 2, and the dimensions of the side clamper 25 along the Z axis are set larger than the maximum thickness of the substrate 2. There is.
  • Each of the clamp cylinders 26 is attached to the bracket 23B.
  • the bracket 23B is provided on the upper part of the conveyor support member 23.
  • the clamp cylinder 26 has a clamp cylinder rod 26R which is a piston rod.
  • the clamp cylinder rod 26R is connected to the outer end surface of the side clamper 25.
  • FIG. 5 is an enlarged perspective perspective view of a part of the substrate holding mechanism 13, and FIG. 6 is a partial cross-sectional view of the substrate holding mechanism 13.
  • the top clamper 27 used for clamping the opposite end surfaces of the substrate 2 and the top clamper moving for moving the top clamper 27 are moved to each of the side clampers 25.
  • a mechanism 28 is provided.
  • the top clamper 27 and the top clamper moving mechanism 28 will be described later.
  • the pair of side clampers 25 are the first side clamper and the second side clamper, the first side clamper is provided with the first top clamper, and the second side clamper is provided with the second top clamper. Has been done.
  • the pair of carry-in conveyors 14 are provided upstream (left) of the intermediate conveyor 24, and the pair of carry-out conveyors 15 are provided downstream (right) of the intermediate conveyor 24.
  • the carry-in conveyor 14 receives the substrate 2 input from the outside of the screen printing machine 1, carries it into the screen printing machine 1, and delivers it to the intermediate conveyor 24.
  • the unloading conveyor 15 carries out the substrate 2 received from the intermediate conveyor 24 to the outside of the screen printing machine 1.
  • the mask plate 16 is a rectangular plate-shaped member, and is supported by the frame 16W from the periphery.
  • a pattern hole 16H corresponding to the electrode pattern 2D formed on the substrate 2 is provided in the central region of the mask plate 16.
  • the squeegee moving mechanism 17 is composed of two fixed beams 17a and a moving beam 17b.
  • the fixed beams 17a extend along the Y-axis above the left and right sides of the base 11, respectively.
  • the moving beam 17b extends along the X-axis, and both ends of the moving beam 17b are supported by two fixed beams 17a.
  • the moving beam 17b is moved along the Y axis by a beam moving mechanism (not shown).
  • the two squeegees 18 are attached to the moving beam 17b. Therefore, when the moving beam 17b moves along the Y axis, the two squeegees 18 move along the Y axis above the mask plate 16.
  • the two squeegees 18 each have a shape extending along the X axis, and are arranged below the moving beam 17b so as to face each other along the Y axis.
  • Each of the two squeegees 18 can be raised and lowered individually by the squeegee vertical movement cylinder 18K attached to the upper surface of the moving beam 17b.
  • the camera 19 moves below the mask plate 16 in a horizontal plane by the operation of the camera moving mechanism 19K.
  • the camera 19 can capture both the lower region of the camera 19 and the upper region of the camera 19.
  • the side clamper 25 is formed with a storage space 25S extending along the X-axis and recessed downward from the upper surface.
  • the top clamper 27 is thinner than the side clamper 25, is a plate-shaped member extending along the X axis, and has a shape that can be stored in the storage space 25S.
  • the upper surface of the top clamper 27 may be dimensionally designed to be substantially the same height as the upper surface of the side clamper 25.
  • the height of the upper surface of the top clamper 27 may be the same as the height of the upper surface of the side clamper 25, or may be higher within 0.3 mm from the upper surface of the side clamper 25.
  • the mask plate 16 can be supported by the upper surface of the top clamper 27 and the upper surface of the side clamper 25, and the paste can be printed stably.
  • the height of the upper surface of the top clamper 27 is preferably the same as the height of the upper surface of the side clamper 25.
  • the top clamper moving mechanism 28 moves one of the top clampers 27 with respect to the side clamper 25, respectively.
  • the top clamper moving mechanism 28 has a slider 31, two sets of parallel links 32, an elevating cylinder 33, and two slide cylinders 34, respectively.
  • two downwardly extending end extending portions 27B are attached to the lower surfaces of both end portions of the top clamper 27 in the extending direction of the X axis.
  • a gate-shaped central extending portion 27R extending downward is attached to the central portion of the top clamper 27 in the extending direction of the X-axis.
  • the inner end of the top clamper 27 protrudes inward from the two end extension 27B and the central extension 27R attached to the top clamper 27.
  • the inside of the top clamper 27 is the side where the top clampers 27 face each other.
  • the end portion of the protruding top clamper 27 is referred to as a protruding end portion 27T as shown in FIG.
  • the slider 31 is composed of a plate-shaped member extending below the side clamper 25 along the X axis.
  • the sliders 31 are slidably mounted on each of the conveyor support members 23 along the Y axis.
  • the two sets of parallel links 32 are composed of two rod members arranged in parallel with each other.
  • the lower end of each rod is rotatably supported by an upward extending portion 31B provided so as to extend upward from the slider 31.
  • the upper end of each rod is rotatably supported by an end extending portion 27B provided extending downward from the top clamper 27.
  • the elevating cylinder 33 is provided on the cylinder mount portion 31M formed on the upper surface of the central portion of the slider 31.
  • the elevating cylinder 33 has an elevating cylinder rod 33R which is a piston rod.
  • the elevating cylinder rod 33R faces inward. The inside is the same side as the inside of the above-mentioned top clamper 27.
  • the tip of the elevating cylinder rod 33R is inserted into the central extending portion 27R extending downward from the top clamper 27.
  • a connecting pin 33P is attached to the tip of the elevating cylinder rod 33R.
  • the connecting pin 33P extends along the X axis and is inserted through an elongated hole provided on the side surface of the central extending portion 27R.
  • the tip of the elevating cylinder rod 33R is slightly movable along the Z axis with respect to the central extending portion 27R. That is, the tip of the elevating cylinder rod 33R is slightly movable along the Z axis with respect to the top clamper 27.
  • the two slide cylinders 34 are attached to the lower surfaces of both ends of the side clamper 25.
  • the slide cylinder 34 has a slide cylinder rod 34R which is a piston rod.
  • the slide cylinder rod 34R faces outward. The outside is the opposite side of the inside of the above-mentioned top clamper 27.
  • the slide cylinder rod 34R is connected to the connecting portion 31K.
  • the connecting portion 31K extends upward from both ends of the slider 31.
  • FIG. 7 is a block diagram showing a control system of the screen printing machine 1.
  • the control device 40 included in the screen printing machine 1 controls the operations of the stage 12, the substrate holding mechanism 13, the loading conveyor 14, the unloading conveyor 15, the squeegee moving mechanism 17, the squeegee vertical movement cylinder 18K, and the camera 19.
  • the control device 40 controls each of the Y-axis drive unit 12a, the X-axis drive unit 12b, the ⁇ -axis drive unit 12c, and the Z-axis drive unit 12d.
  • the control device 40 controls each of the elevating motor 22, the intermediate conveyor 24, the clamp cylinder 26, and the top clamper moving mechanism 28 (elevating cylinder 33 and slide cylinder 34) in the operation control of the substrate holding mechanism 13.
  • the control device 40 operates the carry-in conveyor 14 to receive the substrate 2 for screen printing. Carry it into the machine 1.
  • the carry-in conveyor 14 delivers the substrate 2 to the intermediate conveyor 24 of the substrate holding mechanism 13.
  • the intermediate conveyor 24 conveys the received substrate 2 to a predetermined position.
  • the substrate holding mechanism 13 clamps and holds the substrate 2.
  • the elevating cylinder 33 In order for the substrate holding mechanism 13 to hold the substrate 2, the elevating cylinder 33 first retracts the elevating cylinder rod 33R as shown by an arrow F1 in FIG. As a result, the connecting pin 33P of the elevating cylinder rod 33R moves toward the outside (right in FIG. 9) of the central extension portion 27R. Therefore, the top clamper 27 moves outward via the parallel link 32. At this time, the top clamper 27 moves slightly upward with respect to the connecting pin 33P at the tip of the elevating cylinder rod 33R. Therefore, as a whole, the top clamper 27 moves outward and upward with respect to the side clamper 25 as shown by the arrow R1.
  • the slide cylinder 34 retracts the slide cylinder rod 34R as shown by the arrow F2 in FIG.
  • the slider 31 slides inward (on the left side in FIG. 10) with respect to the conveyor support member 23. Therefore, the top clamper 27 moves inward above the side clamper 25 as indicated by the arrow M1. That is, the top clampers 27 move in the direction of approaching each other.
  • the elevating cylinder 33 advances the elevating cylinder rod 33R as shown by the arrow F3 in FIG.
  • the elevating cylinder rod 33R moves the central extension portion 27R inward (left in FIG. 11) via the connecting pin 33P. Therefore, the top clamper 27 moves inward via the parallel link 32.
  • the top clamper 27 moves slightly downward with respect to the connecting pin 33P. Therefore, the top clamper 27 moves inward and downward with respect to the side clamper 25 as a whole, as shown by the arrow R2.
  • each protruding end portion 27T of the top clamper 27 protrudes into the region between the side clampers 25. It becomes.
  • the position where each of the protruding end portions 27T of the top clampers 27 protrudes into the region between the side clampers 25 is referred to as a “overhanging position” of the pair of top clampers 27. More specifically, the first top clamper projects to the first overhang position and the second top clamper projects to the second overhang position.
  • the lower surface of the top clamper 27 in the overhanging position is the same height as the upper surface of the side clamper 25. It may be configured to be different. That is, the lower surface of the first top clamper in the state of being located in the first overhang position is the same height as the height of the upper surface of the first side clamper, and the lower surface of the second top clamper in the state of being located in the second overhang position. The lower surface may be at the same height as the upper surface of the second side clamper. In other words, the lower surface of the top clamper 27 and the upper surface of the side clamper 25 may be in contact with each other.
  • the warp may be corrected by the force of sandwiching the substrate 2 by the side clamper 25.
  • the lower surface of the top clamper 27 is at the same height as the upper surface of the side clamper 25, it is possible to prevent the substrate 2 from coming into contact with the lower surface of the top clamper 27 and being deformed more than necessary. be able to.
  • the substrate 2 and the side clamper 25 can be brought into close contact with the mask plate 16 at the time of printing, and the print quality of the paste on the substrate 2 can be ensured.
  • the elevating motor 22 raises the lower receiving unit 21 as shown by an arrow L in FIG. 12B.
  • the lower receiving unit 21 pushes up the substrate 2 on the intermediate conveyor 24. That is, the substrate holding mechanism 13 transitions from the state shown in FIGS. 12A and 13A to the state shown in FIGS. 12B and 13B. In this way, the lower receiving unit 21 functions as a pushing-up portion that pushes up the substrate 2 which is a work.
  • the upper surfaces of both ends of the substrate 2 in the extending direction of the Y-axis become the protruding ends 27T of the top clamper 27. It contacts the lower surface from below. Therefore, the height of the upper surface of the substrate 2 is the height of the lower surface of the top clamper 27, that is, the height of the upper surface of the side clamper 25.
  • the elevating motor 22 stops the ascent of the lower receiving unit 21. That is, the control device 40 stops pushing up the substrate 2 by the lower receiving unit 21. Then, when the lower receiving unit 21 stops pushing up the substrate 2, the clamp cylinder 26 advances each clamp cylinder rod 26R as shown by an arrow P in FIGS. 15A and 16. When the clamp cylinder 26 advances each clamp cylinder rod 26R, the side clampers 25 move inward, respectively, as shown by an arrow M2 in FIG. That is, the side clampers 25 move so as to approach each other.
  • each inner end surface of the side clamper 25 comes into contact with one of both end faces of the substrate 2 in the extending direction of the Y axis.
  • both end faces of the substrate 2 are in a state of being clamped by the side clamper 25 as shown in FIG. 15A.
  • the pair of clamp cylinders 26 together with the control device 40 are driven in the direction of closing the side clampers 25, and the side clampers 25 clamp the opposite end surfaces of the substrate 2 as a work. It constitutes a drive unit.
  • the elevating cylinder 33 retracts the elevating cylinder rod 33R as shown by an arrow F4 in FIG.
  • the connecting pin 33P of the elevating cylinder rod 33R moves the central extension portion 27R toward the outside (right in FIG. 17). Therefore, as shown by the arrow R3, the top clamper 27 moves outward and upward via the parallel link 32.
  • the slide cylinder 34 advances the slide cylinder rod 34R as shown by an arrow F5 in FIG.
  • the slide cylinder 34 advances the slide cylinder rod 34R
  • the slider 31 slides outward (on the right side in FIG. 18) with respect to the conveyor support member 23. Therefore, the top clamper 27 moves outward with the upper side of the side clamper 25 as shown by the arrow M3. That is, the top clampers 27 move in a direction away from each other. As a result, the protruding end portion 27T of the top clamper 27 is retracted into the upper region of the side clamper 25.
  • the elevating cylinder 33 advances the elevating cylinder rod 33R as shown by an arrow F6 in FIG.
  • the connecting pin 33P of the elevating cylinder rod 33R moves the central extension portion 27R inward (left in FIG. 19). Therefore, the top clamper 27 moves inward and downward via the parallel link 32 as shown by the arrow R4. That is, the top clamper 27 descends.
  • the top clamper 27 moves to a position stored in the storage space 25S opened on the upper surface of the side clamper 25.
  • the position where the top clamper 27 is stored is referred to as a storage position.
  • FIG. 15B the holding of the substrate 2 by the substrate holding mechanism 13 is completed.
  • the top clamper moving mechanism 28 performs the retracting operation and the extending operation.
  • each of the top clampers 27 is stored in the storage space 25S from the overhanging position.
  • the top clamper 27 stored in the storage space 25S moves to the overhanging position.
  • the storage space 25S in which each of the top clampers 27 is stored is recessed downward from the upper surface of each of the side clampers. Therefore, the movement path of the top clamper 27 when moving the top clamper 27 from the storage position to the overhanging position and from the overhanging position to the storage position is extremely short.
  • the pair of top clamper moving mechanism 28 and the control device 40 constitute the top clamper moving portion.
  • the top clamper moving unit moves the first top clamper of the top clamper 27 between the first storage position and the first overhanging position, and stores the second top clamper of the top clamper 27 in the second position. Move between the position and the second overhang position.
  • the retracting operation and the extending operation by the top clamper moving mechanism 28 are composed of a combination of an elevating operation and a horizontal moving operation, respectively.
  • the elevating operation the elevating cylinder 33 raises and lowers each of the top clampers 27.
  • the slide cylinder 34 moves the top clampers 27 closer to each other or away from each other. Therefore, the movement path when moving the top clamper 27 from the storage position to the overhanging position and from the overhanging position to the storage position is extremely short.
  • the control device 40 When the holding of the board 2 by the board holding mechanism 13 is completed, the control device 40 operates the camera moving mechanism 19K to position the camera 19 between the board 2 held by the board holding mechanism 13 and the mask plate 16. Then, the control device 40 causes the camera 19 to take an image of the substrate mark (not shown) provided on the substrate 2 and the mask mark (not shown) provided on the mask plate 16. When the camera 19 captures the substrate mark and the mask mark, the control device 40 grasps the position of the substrate 2 with respect to the mask plate 16 based on the image data of these marks.
  • the control device 40 Upon grasping the position of the substrate 2 with respect to the mask plate 16, the control device 40 controls the stage 12 to move the substrate 2 in the horizontal plane. Then, the substrate 2 is aligned in the horizontal plane so that the substrate mark and the mask mark face each other vertically. By this alignment, the substrate 2 is aligned with the mask plate 16. Then, when the alignment of the substrate 2 is completed, the control device 40 operates the stage 12 as shown by the arrow H in FIG. 20A to raise the entire substrate holding mechanism 13. As a result, as shown in FIG. 20B, the control device 40 brings the upper surface of the substrate 2 into contact with the lower surface of the mask plate 16 from below. As a result, the pattern hole 16H of the mask plate 16 and the electrode pattern 2D on the substrate 2 match.
  • the control device 40 lowers one of the squeegees 18 and brings the lower edge of the lowered squeegee 18 into contact with the upper surface of the mask plate 16. Then, as shown by an arrow G in FIG. 20B, the squeegee 18 in contact with the mask plate 16 is moved along the Y axis, and the paste Pst is scraped by the squeegee 18. By this operation, the paste Pst is filled in the pattern hole 16H of the mask plate 16.
  • the paste Pst When the paste Pst is filled in the pattern hole 16H of the mask plate 16, the paste Pst is printed on the electrode pattern 2D of the substrate 2. After that, the control device 40 operates the stage 12 to lower the entire substrate holding mechanism 13, separates the substrate 2 from the mask plate 16, and releases the plates.
  • the control device 40 When the plate release is completed, the control device 40 operates the clamp cylinder 26 and moves the side clampers 25 in the directions away from each other to release the clamp of the substrate 2. Then, the control device 40 lowers the lower receiving unit 21 with respect to the moving stage 12e to lower the substrate 2 onto the intermediate conveyor 24. Further, the control device 40 operates the intermediate conveyor 24 and the unloading conveyor 15 to deliver the substrate 2 on the intermediate conveyor 24 to the unloading conveyor 15. When the unloading conveyor 15 receives the substrate 2 from the intermediate conveyor 24, the unloading conveyor 15 carries out the substrate 2 to the outside of the screen printing machine 1.
  • the storage space 25S of the top clamper 27 is recessed (opened to the upper surface) from the upper surface of the side clamper 25. Therefore, the movement path when moving the top clamper 27 from the storage position to the overhanging position and from the overhanging position to the storage position is extremely short. Therefore, the top clamper 27 can be moved in a compact configuration, and the size of the screen printing machine 1 can be suppressed.
  • the present disclosure is not limited to the above-mentioned ones, and various modifications and the like are possible.
  • the top clampers 27 are each stored in the storage space 25S.
  • the thickness (dimension along the Z axis) of the top clamper 27 is extremely small, the substrate 2 is brought into contact with the mask plate 16 without storing the top clamper 27 in the storage space 25S, and screen printing is performed. You may want to do it.
  • the storage space 25S is provided so as to open on the upper surface of the side clamper 25. More specifically, in the example shown in FIG.
  • the storage space 25S is rectangular and penetrates the side clamper 25 in a size that can accommodate the top clamper 27. However, if the top clamper 27 can be stored, it does not have to penetrate except for the portion through which the end extension portion 27B and the center extension portion 27R are inserted. In particular, when the thickness of the top clamper 27 is extremely small, the upper surface of the side clamper 25 may be used as the storage space 25S. That is, the storage space 25S does not necessarily have to be recessed from the upper surface of the side clamper 25. As described above, the storage space 25S may be provided on the upper surface side of the side clamper 25.
  • top clamper moving mechanism 28 described above is only an example. If the top clamper 27 can be stored in the storage space 25S provided on the upper surface side of the side clamper 25, and if the top clamper 27 can be moved from the storage space 25S to the overhanging position, even if it has other configurations. I do not care.
  • the top clamper can be moved in a compact configuration, and it is possible to prevent the device from becoming large as a whole. Therefore, the work holding device and the screen printing machine are industrially useful from the viewpoint of space saving.

Abstract

This workpiece holding device has: a push-up part; a pair of side clampers; a side clamper driving part that causes the side clampers to clamp both end surfaces of a workpiece; a pair of top clampers; and a top clamper moving part that causes the top campers to move between storing positions and projecting positions. Storage spaces for storing the top clampers positioned at the storing positions are provided to the upper surface side of the side clampers. Both end portions of the upper surface of the workpiece pushed up by the push-up part abut against the top clampers from below at the projecting positions.

Description

ワーク保持装置およびスクリーン印刷機Work holder and screen printing machine
　本開示は、基板等のワークの両端面をクランプして保持するワーク保持装置およびこのワーク保持装置を有するスクリーン印刷機に関する。 The present disclosure relates to a work holding device that clamps and holds both end faces of a work such as a substrate, and a screen printing machine having this work holding device.
　従来、ワークとしての基板に半田等のペーストを塗布するスクリーン印刷機が知られている。スクリーン印刷機は、基板保持機構によって基板を保持する。次にスクリーン印刷機は、保持した基板の上面にマスクプレートを接触させる。さらに、マスクプレート上でスキージを摺動させてマスクプレート上のペーストを掻き寄せることで、マスクプレートに設けられたパターン孔を通じて基板の上面にペーストを塗布する。このようなスクリーン印刷機が有する基板保持機構は、基板を押し上げる押上げ部と、押上げ部によって押し上げられた基板の両端面を側方からクランプする一対のサイドクランパとを有する。この基板保持機構は一対のサイドクランパによって両端面をクランプした状態の基板をマスクプレートに接触させる。 Conventionally, a screen printing machine that applies a paste such as solder to a substrate as a work is known. The screen printing machine holds the substrate by the substrate holding mechanism. Next, the screen printing machine brings the mask plate into contact with the upper surface of the held substrate. Further, by sliding the squeegee on the mask plate and scraping the paste on the mask plate, the paste is applied to the upper surface of the substrate through the pattern holes provided in the mask plate. The substrate holding mechanism of such a screen printing machine has a push-up portion that pushes up the substrate and a pair of side clampers that clamp both end faces of the substrate pushed up by the push-up portion from the side. This substrate holding mechanism brings the substrate in a state where both end surfaces are clamped by a pair of side clampers into contact with the mask plate.
　また、このようなスクリーン印刷機の基板保持機構の中には、一対のサイドクランパの上方の所定の張出位置に一対のトップクランパが設けられた基板保持機構がある。トップクランパには、押し上げられた基板の両端部の上面が下方から当接する（例えば、特許文献１）。このような構成の基板保持機構では、トップクランパの下面の高さをサイドクランパの上面の高さと同じ高さとしておくことにより、押し上げられた基板の上面の高さがサイドクランパの上面の高さと同じ高さになる状態で、基板をクランプすることができる。そのため、基板をマスクプレートに接触させたときの両者の密着度が高くなり、スクリーン印刷機における印刷精度を高めることができる。 Further, in the substrate holding mechanism of such a screen printing machine, there is a substrate holding mechanism in which a pair of top clampers are provided at predetermined overhang positions above the pair of side clampers. The upper surfaces of both ends of the pushed-up substrate come into contact with the top clamper from below (for example, Patent Document 1). In the substrate holding mechanism having such a configuration, the height of the lower surface of the top clamper is set to be the same as the height of the upper surface of the side clamper, so that the height of the upper surface of the pushed-up substrate is the height of the upper surface of the side clamper. The substrate can be clamped at the same height. Therefore, when the substrate is brought into contact with the mask plate, the degree of adhesion between the two becomes high, and the printing accuracy in the screen printing machine can be improved.
特開２００７－１６０６９２号公報JP-A-2007-160692
　しかしながら、上記従来のスクリーン印刷機では、一対のトップクランパは、一対のサイドクランパの外側（２つのトップクランパが互いに離れる側）の格納位置からサイドクランパの上方の張出位置に張り出されるように構成されている。このためトップクランパを格納位置と張出位置との間で移動させる際の移動経路は極めて長い。したがって、トップクランパを移動させるための機構が大きくなってスクリーン印刷機の全体のサイズが大型化するおそれがある。 However, in the conventional screen printing machine, the pair of top clampers is projected from the storage position on the outside of the pair of side clampers (the side where the two top clampers are separated from each other) to the overhang position above the side clampers. It is configured. Therefore, the movement path when moving the top clamper between the storage position and the overhanging position is extremely long. Therefore, the mechanism for moving the top clamper becomes large, and the overall size of the screen printing machine may increase.
　本開示は、トップクランパをコンパクトな構成で移動させることができ、装置が全体として大型化するのを抑制することができるワーク保持装置およびこのワーク保持装置を含むスクリーン印刷機を提供する。 The present disclosure provides a work holding device capable of moving the top clamper in a compact configuration and suppressing an increase in size of the device as a whole, and a screen printing machine including the work holding device.
　本開示の一態様に係るワーク保持装置は、押上げ部と、第１サイドクランパと、第２サイドクランパと、サイドクランパ駆動部と、第１トップクランパ、第２トップクランパと、トップクランパ移動部とを有する。押上げ部は、ワークを押し上げるように構成されている。第１サイドクランパ、第２サイドクランパは、押上げ部によって押し上げられたワークを、ワークの相対する両端面でクランプするように構成されている。サイドクランパ駆動部は、第１、第２サイドクランパにワークの両端面をクランプさせるように構成されている。第１トップクランパは、第１格納位置と、第１サイドクランパの上方の第１張出位置との間で移動するように構成され、第２トップクランパは、第２格納位置と、第２サイドクランパの上方の第２張出位置との間で移動するように構成されている。トップクランパ移動部は、第１トップクランパを、第１格納位置と第１張出位置との間で移動させるとともに、第２トップクランパを、第２格納位置と第２張出位置との間で移動させるように構成されている。第１サイドクランパの上面側には、第１格納位置に位置した第１トップクランパを格納する第１格納スペースが設けられ、第２サイドクランパの上面側には、第２格納位置に位置した第２トップクランパを格納する第２格納スペースが設けられている。第１トップクランパには、第１張出位置において、押上げ部によって押し上げられたワークの両端部の一方におけるワークの上面が下方から当接する。そして、第２トップクランパには、第２張出位置において、押上げ部によって押し上げられたワークの両端部の他方におけるワークの上面が下方から当接する。 The work holding device according to one aspect of the present disclosure includes a push-up portion, a first side clamper, a second side clamper, a side clamper drive portion, a first top clamper, a second top clamper, and a top clamper moving portion. And have. The push-up portion is configured to push up the work. The first side clamper and the second side clamper are configured to clamp the work pushed up by the push-up portion on the opposite end surfaces of the work. The side clamper drive unit is configured to clamp both end surfaces of the work to the first and second side clampers. The first top clamper is configured to move between the first retracted position and the first overhanging position above the first side clamper, and the second top clamper is configured to move between the second retracted position and the second side. It is configured to move to and from the second overhang position above the clamper. The top clamper moving unit moves the first top clamper between the first storage position and the first extension position, and moves the second top clamper between the second storage position and the second extension position. It is configured to move. A first storage space for storing the first top clamper located at the first storage position is provided on the upper surface side of the first side clamper, and a second storage space located at the second storage position is provided on the upper surface side of the second side clamper. 2 A second storage space for storing the top clamper is provided. At the first overhanging position, the upper surface of the work at one of both ends of the work pushed up by the push-up portion abuts on the first top clamper from below. Then, at the second overhanging position, the upper surface of the work at the other end of both ends of the work pushed up by the push-up portion abuts on the second top clamper from below.
　本開示の一態様に係るスクリーン印刷機は、上記ワーク保持装置と、マスクプレートと、スキージとを有する。マスクプレートにはパターン孔が設けられている。マスクプレートは、ワーク保持装置の一対のサイドクランパによってクランプされたワークの上面に接触するように構成されている。スキージは、ワークの上面に接触した状態のマスクプレート上を摺動して、マスクプレート上のペーストを掻き寄せることで、パターン孔を通じてワークの上面にペーストを塗布するように構成されている。 The screen printing machine according to one aspect of the present disclosure includes the work holding device, a mask plate, and a squeegee. The mask plate is provided with a pattern hole. The mask plate is configured to contact the top surface of the work clamped by the pair of side clampers of the work holding device. The squeegee is configured to slide on the mask plate in contact with the upper surface of the work and scrape the paste on the mask plate to apply the paste to the upper surface of the work through the pattern holes.
　本開示によれば、トップクランパをコンパクトな構成で移動させることができ、装置が全体として大型化するのを抑制することができる。 According to the present disclosure, the top clamper can be moved in a compact configuration, and the device can be suppressed from becoming large as a whole.
本開示の実施の形態におけるスクリーン印刷機の平面図Top view of the screen printing machine according to the embodiment of the present disclosure 図１に示すスクリーン印刷機の正面図Front view of the screen printing machine shown in FIG. 図１に示すスクリーン印刷機の側面図Side view of the screen printing machine shown in FIG. 図１に示すスクリーン印刷機が有するワーク保持装置の一部を示す斜視図A perspective view showing a part of the work holding device included in the screen printing machine shown in FIG. 図４に示すワーク保持装置の一部の拡大透視斜視図Enlarged perspective perspective view of a part of the work holding device shown in FIG. 本開示の実施の形態におけるワーク保持装置の部分断面図Partial sectional view of the work holding device according to the embodiment of the present disclosure. 図１に示すスクリーン印刷機の制御系統を示すブロック図A block diagram showing a control system of the screen printing machine shown in FIG. 図１に示すスクリーン印刷機の動作説明図An operation explanatory view of the screen printing machine shown in FIG. 図１に示すスクリーン印刷機の動作説明図An operation explanatory view of the screen printing machine shown in FIG. 図６に示すワーク保持装置のクランプ動作における、トップクランパの張出動作の説明図Explanatory drawing of the extension operation of the top clamper in the clamp operation of the work holding device shown in FIG. 図９に続くトップクランパの張出動作の説明図Explanatory drawing of the overhanging operation of the top clamper following FIG. 図１０に続くトップクランパの張出動作の説明図Explanatory drawing of the extension operation of the top clamper following FIG. 図１１に示す状態を示すスクリーン印刷機におけるワーク保持装置のクランプ動作の説明図Explanatory drawing of clamp operation of work holding device in screen printing machine which shows state shown in FIG. 図１２Ａに続くクランプ動作の説明図Explanatory drawing of clamp operation following FIG. 12A 図１２Ａに示すワーク保持装置を基板とともに示す斜視図A perspective view showing the work holding device shown in FIG. 12A together with the substrate. 図１２Ｂに示すワーク保持装置を基板とともに示す斜視図A perspective view showing the work holding device shown in FIG. 12B together with the substrate. 図１２Ｂに示す状態のワーク保持装置の部分拡大図A partially enlarged view of the work holding device in the state shown in FIG. 12B. 図１２Ｂに続くワーク保持装置のクランプ動作の説明図Explanatory drawing of clamp operation of work holding apparatus following FIG. 12B 図１５Ａに続くワーク保持装置のクランプ動作の説明図Explanatory drawing of clamp operation of work holding device following FIG. 15A 図１５Ａに示す状態のワーク保持装置の部分拡大図A partially enlarged view of the work holding device in the state shown in FIG. 15A. 図１６に示すワーク保持装置のクランプ動作における、トップクランパの格納動作の説明図Explanatory drawing of the retracting operation of the top clamper in the clamping operation of the work holding device shown in FIG. 図１７に続くトップクランパの格納動作の説明図Explanatory drawing of the retracting operation of the top clamper following FIG. 図１８に続くトップクランパの格納動作の説明図Explanatory drawing of storage operation of top clamper following FIG. 図３に示すスクリーン印刷機の動作説明図An operation explanatory view of the screen printing machine shown in FIG. 図３に示すスクリーン印刷機の動作説明図An operation explanatory view of the screen printing machine shown in FIG.
　以下、図面を参照しながら、本開示の実施の形態について説明する。図１、図２および図３は本開示の実施の形態におけるスクリーン印刷機１を示している。スクリーン印刷機１は、基板２の上面に形成された電極パターン２Ｄに半田ペースト等のペーストを塗布する。スクリーン印刷機１は、基台１１、ステージ１２、ワーク保持装置としての基板保持機構１３、搬入コンベア１４、搬出コンベア１５、マスクプレート１６、スキージ移動機構１７、２つのスキージ１８およびカメラ１９を有している。以下の説明では便宜上、図１に示す作業者ＯＰから見た左右をＸ軸とし、作業者ＯＰから見た前後をＹ軸とする。また、上下をＺ軸とする。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. 1, 2 and 3 show the screen printing machine 1 according to the embodiment of the present disclosure. The screen printing machine 1 applies a paste such as solder paste to the electrode pattern 2D formed on the upper surface of the substrate 2. The screen printing machine 1 has a base 11, a stage 12, a substrate holding mechanism 13 as a work holding device, a carry-in conveyor 14, a carry-out conveyor 15, a mask plate 16, a squeegee moving mechanism 17, two squeegees 18, and a camera 19. ing. In the following description, for convenience, the left and right sides as seen from the worker OP shown in FIG. 1 are defined as the X-axis, and the front and back as seen from the worker OP are defined as the Y-axis. The top and bottom are the Z-axis.
　図２および図３に示すように、ステージ１２は、基台１１上に設けられている。ステージ１２は、図３に示すように、Ｙ軸駆動部１２ａ、Ｘ軸駆動部１２ｂ、θ軸駆動部１２ｃ、Ｚ軸駆動部１２ｄおよび移動ステージ１２ｅを有している。移動ステージ１２ｅは、ステージ１２の最上部に位置している。Ｙ軸駆動部１２ａは、移動ステージ１２ｅをＹ軸に沿って移動し、Ｘ軸駆動部１２ｂは、移動ステージ１２ｅをＸ軸に沿って駆動する。θ軸駆動部１２ｃは、移動ステージ１２ｅをＺ軸回りに回転し、Ｚ軸駆動部１２ｄは、移動ステージ１２ｅをＺ軸に沿って移動する。 As shown in FIGS. 2 and 3, the stage 12 is provided on the base 11. As shown in FIG. 3, the stage 12 includes a Y-axis drive unit 12a, an X-axis drive unit 12b, a θ-axis drive unit 12c, a Z-axis drive unit 12d, and a moving stage 12e. The moving stage 12e is located at the top of the stage 12. The Y-axis drive unit 12a moves the moving stage 12e along the Y-axis, and the X-axis drive unit 12b drives the moving stage 12e along the X-axis. The θ-axis drive unit 12c rotates the moving stage 12e around the Z-axis, and the Z-axis drive unit 12d moves the moving stage 12e along the Z-axis.
　基板保持機構１３は、移動ステージ１２ｅに設けられている。基板保持機構１３は、図３に示すように、下受けユニット２１と、昇降モータ２２と、それぞれ前後の一対のコンベア支持部材２３、中間コンベア２４、サイドクランパ２５およびクランプシリンダ２６を有している。 The substrate holding mechanism 13 is provided on the moving stage 12e. As shown in FIG. 3, the substrate holding mechanism 13 includes a lower receiving unit 21, an elevating motor 22, a pair of front and rear conveyor support members 23, an intermediate conveyor 24, a side clamper 25, and a clamp cylinder 26, respectively. ..
　下受けユニット２１は移動ステージ１２ｅの上方に位置しており、下部に板状のベース部２１ａを有している。昇降モータ２２はベース部２１ａを移動ステージ１２ｅに対して昇降させることで、下受けユニット２１の全体を昇降させる。コンベア支持部材２３はそれぞれ、移動ステージ１２ｅの上面から上方に延びており、ベース部２１ａを貫いて上方に延びている。 The lower receiving unit 21 is located above the moving stage 12e and has a plate-shaped base portion 21a at the lower part. The elevating motor 22 raises and lowers the entire lower receiving unit 21 by raising and lowering the base portion 21a with respect to the moving stage 12e. Each of the conveyor support members 23 extends upward from the upper surface of the moving stage 12e, penetrates the base portion 21a, and extends upward.
　図４は、基板保持機構１３の一部を示す斜視図である。図３および図４に示すように、中間コンベア２４は、コンベア支持部材２３に一対一で設けられている。中間コンベア２４はＹ軸の延びる方向における基板２の両端部を下方から支持してＸ軸に沿って搬送し、基板２を位置決めする。サイドクランパ２５はコンベア支持部材２３の上端部に一対一で設けられている。サイドクランパ２５は、側端面同士が前後に対向するように配置されている。 FIG. 4 is a perspective view showing a part of the substrate holding mechanism 13. As shown in FIGS. 3 and 4, the intermediate conveyor 24 is provided on the conveyor support member 23 on a one-to-one basis. The intermediate conveyor 24 supports both ends of the substrate 2 in the extending direction of the Y-axis from below and conveys the substrate 2 along the X-axis to position the substrate 2. The side clampers 25 are provided one-to-one on the upper end of the conveyor support member 23. The side clampers 25 are arranged so that the side end faces face each other in the front-rear direction.
　図４に示すように、サイドクランパ２５はＸ軸に沿って延びた板状の部材で構成されている。サイドクランパ２５のＸ軸に沿った寸法は、基板２のＸ軸に沿った最大長さよりも大きく設定され、サイドクランパ２５のＺ軸に沿った寸法は基板２の最大厚さよりも大きく設定されている。 As shown in FIG. 4, the side clamper 25 is composed of a plate-shaped member extending along the X axis. The dimensions of the side clamper 25 along the X axis are set larger than the maximum length along the X axis of the substrate 2, and the dimensions of the side clamper 25 along the Z axis are set larger than the maximum thickness of the substrate 2. There is.
　クランプシリンダ２６はそれぞれ、ブラケット２３Ｂに取り付けられている。ブラケット２３Ｂは、コンベア支持部材２３の上部に設けられている。クランプシリンダ２６は、ピストンロッドであるクランプシリンダロッド２６Ｒを有する。クランプシリンダロッド２６Ｒは、サイドクランパ２５の外側端面に連結されている。クランプシリンダ２６がそれぞれクランプシリンダロッド２６Ｒを前進させると、サイドクランパ２５がそれぞれ内側へ移動する。すなわち、サイドクランパ２５は、互いの間が閉じる方向に移動する。また、クランプシリンダ２６がそれぞれクランプシリンダロッド２６Ｒを後退させると、サイドクランパ２５がそれぞれ外側へ移動する。すなわち、サイドクランパ２５は、互いの間が開く方向に移動する。 Each of the clamp cylinders 26 is attached to the bracket 23B. The bracket 23B is provided on the upper part of the conveyor support member 23. The clamp cylinder 26 has a clamp cylinder rod 26R which is a piston rod. The clamp cylinder rod 26R is connected to the outer end surface of the side clamper 25. When each of the clamp cylinders 26 advances the clamp cylinder rod 26R, the side clampers 25 move inward. That is, the side clampers 25 move in a direction in which they close each other. Further, when the clamp cylinders 26 retract the clamp cylinder rods 26R, the side clampers 25 move outward. That is, the side clampers 25 move in a direction in which they open between each other.
　図５は、基板保持機構１３の一部の拡大透視斜視図、図６は、基板保持機構１３の部分断面図である。図４、図５および図６に示すように、サイドクランパ２５のそれぞれには、基板２の相対する両端面をクランプするときに使用されるトップクランパ２７と、トップクランパ２７を移動させるトップクランパ移動機構２８が設けられている。トップクランパ２７とトップクランパ移動機構２８については後述する。このように、一対のサイドクランパ２５は、第１サイドクランパと第２サイドクランパとであり、第１サイドクランパには第１トップクランパが設けられ、第２サイドクランパには第２トップクランパが設けられている。 FIG. 5 is an enlarged perspective perspective view of a part of the substrate holding mechanism 13, and FIG. 6 is a partial cross-sectional view of the substrate holding mechanism 13. As shown in FIGS. 4, 5 and 6, the top clamper 27 used for clamping the opposite end surfaces of the substrate 2 and the top clamper moving for moving the top clamper 27 are moved to each of the side clampers 25. A mechanism 28 is provided. The top clamper 27 and the top clamper moving mechanism 28 will be described later. As described above, the pair of side clampers 25 are the first side clamper and the second side clamper, the first side clamper is provided with the first top clamper, and the second side clamper is provided with the second top clamper. Has been done.
　図１および図２に示すように、一対の搬入コンベア１４は中間コンベア２４の上流（左方）に設けられており、一対の搬出コンベア１５は中間コンベア２４の下流（右方）に設けられている。搬入コンベア１４はスクリーン印刷機１の外部から投入された基板２を受け取ってスクリーン印刷機１内に搬入し、中間コンベア２４に受け渡す。搬出コンベア１５は中間コンベア２４から受け取った基板２をスクリーン印刷機１の外部に搬出する。 As shown in FIGS. 1 and 2, the pair of carry-in conveyors 14 are provided upstream (left) of the intermediate conveyor 24, and the pair of carry-out conveyors 15 are provided downstream (right) of the intermediate conveyor 24. There is. The carry-in conveyor 14 receives the substrate 2 input from the outside of the screen printing machine 1, carries it into the screen printing machine 1, and delivers it to the intermediate conveyor 24. The unloading conveyor 15 carries out the substrate 2 received from the intermediate conveyor 24 to the outside of the screen printing machine 1.
　図１、図２及び図３に示すように、マスクプレート１６は矩形の板状の部材であり、周囲からフレーム１６Ｗによって支持されている。マスクプレート１６の中央領域には、基板２上に形成された電極パターン２Ｄに対応するパターン孔１６Ｈが設けられている。 As shown in FIGS. 1, 2 and 3, the mask plate 16 is a rectangular plate-shaped member, and is supported by the frame 16W from the periphery. A pattern hole 16H corresponding to the electrode pattern 2D formed on the substrate 2 is provided in the central region of the mask plate 16.
　図１及び図２に示すように、スキージ移動機構１７は、２つの固定ビーム１７ａと、移動ビーム１７ｂとで構成されている。固定ビーム１７ａはそれぞれ、基台１１の左右の上方で、Ｙ軸に沿って延びている。移動ビーム１７ｂはＸ軸に沿って延び、移動ビーム１７ｂの両端は、２つの固定ビーム１７ａに支持されている。移動ビーム１７ｂは、図示しないビーム移動機構によって、Ｙ軸に沿って移動される。 As shown in FIGS. 1 and 2, the squeegee moving mechanism 17 is composed of two fixed beams 17a and a moving beam 17b. The fixed beams 17a extend along the Y-axis above the left and right sides of the base 11, respectively. The moving beam 17b extends along the X-axis, and both ends of the moving beam 17b are supported by two fixed beams 17a. The moving beam 17b is moved along the Y axis by a beam moving mechanism (not shown).
　図２および図３に示すように、２つのスキージ１８は移動ビーム１７ｂに取り付けられている。このため移動ビーム１７ｂがＹ軸に沿って移動すると、２つのスキージ１８はマスクプレート１６の上方でＹ軸に沿って移動する。 As shown in FIGS. 2 and 3, the two squeegees 18 are attached to the moving beam 17b. Therefore, when the moving beam 17b moves along the Y axis, the two squeegees 18 move along the Y axis above the mask plate 16.
　図１及び図２に示すように、２つのスキージ１８はそれぞれＸ軸に沿って延びた形状を有しており、移動ビーム１７ｂの下方において、Ｙ軸に沿って対向して配置されている。２つのスキージ１８はそれぞれ、移動ビーム１７ｂの上面に取り付けられたスキージ上下動シリンダ１８Ｋによって個別に昇降させることができる。 As shown in FIGS. 1 and 2, the two squeegees 18 each have a shape extending along the X axis, and are arranged below the moving beam 17b so as to face each other along the Y axis. Each of the two squeegees 18 can be raised and lowered individually by the squeegee vertical movement cylinder 18K attached to the upper surface of the moving beam 17b.
　図３に示すように、カメラ１９はカメラ移動機構１９Ｋの作動によって、マスクプレート１６の下方を水平面内で移動する。カメラ１９は、カメラ１９の下側の領域とカメラ１９の上側の領域の双方を撮像することができる。 As shown in FIG. 3, the camera 19 moves below the mask plate 16 in a horizontal plane by the operation of the camera moving mechanism 19K. The camera 19 can capture both the lower region of the camera 19 and the upper region of the camera 19.
　ここで、前述のトップクランパ２７とトップクランパ移動機構２８について説明する。図４、図５および図６に示すように、サイドクランパ２５には、Ｘ軸に沿って延びるとともに上面から下方に窪んだ形状の格納スペース２５Ｓが形成されている。トップクランパ２７は、サイドクランパ２５よりも薄く、Ｘ軸に沿って延びた板状の部材であり、格納スペース２５Ｓに格納可能な形状を有する。トップクランパ２７が格納スペース２５Ｓに格納された状態では、トップクランパ２７の上面はサイドクランパ２５の上面とほぼ同じ高さとなるように寸法設計されていてもよい。具体的には、トップクランパ２７の上面の高さは、サイドクランパ２５の上面と高さと同じか、サイドクランパ２５の上面に比べて０．３ｍｍ以内の範囲で高くてもよい。この状態であれば、トップクランパ２７の上面とサイドクランパ２５の上面とでマスクプレート１６を支えることができ、ペーストを安定して印刷することができる。特に、トップクランパ２７の上面の高さは、サイドクランパ２５の上面と高さと同じであることが好ましい。 Here, the above-mentioned top clamper 27 and top clamper moving mechanism 28 will be described. As shown in FIGS. 4, 5 and 6, the side clamper 25 is formed with a storage space 25S extending along the X-axis and recessed downward from the upper surface. The top clamper 27 is thinner than the side clamper 25, is a plate-shaped member extending along the X axis, and has a shape that can be stored in the storage space 25S. When the top clamper 27 is stored in the storage space 25S, the upper surface of the top clamper 27 may be dimensionally designed to be substantially the same height as the upper surface of the side clamper 25. Specifically, the height of the upper surface of the top clamper 27 may be the same as the height of the upper surface of the side clamper 25, or may be higher within 0.3 mm from the upper surface of the side clamper 25. In this state, the mask plate 16 can be supported by the upper surface of the top clamper 27 and the upper surface of the side clamper 25, and the paste can be printed stably. In particular, the height of the upper surface of the top clamper 27 is preferably the same as the height of the upper surface of the side clamper 25.
　トップクランパ移動機構２８はそれぞれ、トップクランパ２７の一方を、サイドクランパ２５に対して移動させる。トップクランパ移動機構２８はそれぞれ、スライダ３１と、２組の平行リンク３２と、昇降シリンダ３３と、２つのスライドシリンダ３４とを有している。 The top clamper moving mechanism 28 moves one of the top clampers 27 with respect to the side clamper 25, respectively. The top clamper moving mechanism 28 has a slider 31, two sets of parallel links 32, an elevating cylinder 33, and two slide cylinders 34, respectively.
　図４および図５に示すように、Ｘ軸の延びる方向におけるトップクランパ２７の両端部の下面には、下方に延びた２つの端部延出部２７Ｂが取り付けられている。また、Ｘ軸の延びる方向におけるトップクランパ２７の中央部には、下方に延びた門型の中央延出部２７Ｒが取り付けられている。 As shown in FIGS. 4 and 5, two downwardly extending end extending portions 27B are attached to the lower surfaces of both end portions of the top clamper 27 in the extending direction of the X axis. Further, a gate-shaped central extending portion 27R extending downward is attached to the central portion of the top clamper 27 in the extending direction of the X-axis.
　図５および図６に示すように、トップクランパ２７の内側の端部は、トップクランパ２７に取り付けられた２つの端部延出部２７Ｂおよび中央延出部２７Ｒよりも内側に突出している。トップクランパ２７の内側とは、トップクランパ２７同志が互いに向き合う側である。以下、その突出したトップクランパ２７の端部を、図６に示すように、突出端部２７Ｔと称する。 As shown in FIGS. 5 and 6, the inner end of the top clamper 27 protrudes inward from the two end extension 27B and the central extension 27R attached to the top clamper 27. The inside of the top clamper 27 is the side where the top clampers 27 face each other. Hereinafter, the end portion of the protruding top clamper 27 is referred to as a protruding end portion 27T as shown in FIG.
　図５および図６に示すように、スライダ３１は、サイドクランパ２５の下方をＸ軸に沿って延びた板状の部材で構成されている。スライダ３１は、コンベア支持部材２３のそれぞれの上に、Ｙ軸に沿ってスライド可能に取り付けられている。 As shown in FIGS. 5 and 6, the slider 31 is composed of a plate-shaped member extending below the side clamper 25 along the X axis. The sliders 31 are slidably mounted on each of the conveyor support members 23 along the Y axis.
　図５および図６に示すように、２組の平行リンク３２はそれぞれ平行に配置された２本のロッド部材で構成されている。各ロッドの下端は、スライダ３１から上方に延びて設けられた上方延出部３１Ｂによって回動自在に支持されている。各ロッドの上端は、トップクランパ２７から下方に延びて設けられた端部延出部２７Ｂによって回動自在に支持されている。 As shown in FIGS. 5 and 6, the two sets of parallel links 32 are composed of two rod members arranged in parallel with each other. The lower end of each rod is rotatably supported by an upward extending portion 31B provided so as to extend upward from the slider 31. The upper end of each rod is rotatably supported by an end extending portion 27B provided extending downward from the top clamper 27.
　図４、図５および図６に示すように、昇降シリンダ３３は、スライダ３１の中央部の上面に形成されたシリンダマウント部３１Ｍに設けられている。昇降シリンダ３３は、ピストンロッドである昇降シリンダロッド３３Ｒを有する。昇降シリンダロッド３３Ｒは、内側に向いている。内側とは、前述のトップクランパ２７の内側と同じ側である。昇降シリンダロッド３３Ｒの先端部は、トップクランパ２７から下方に延びた中央延出部２７Ｒ内に差し込まれている。昇降シリンダロッド３３Ｒの先端部には、連結ピン３３Ｐが取り付けられている。連結ピン３３Ｐは、Ｘ軸に沿って延び、中央延出部２７Ｒの側面に設けられた長孔に挿通している。このため昇降シリンダロッド３３Ｒの先端部は、中央延出部２７Ｒに対して、Ｚ軸に沿って若干移動自在になっている。すなわち、昇降シリンダロッド３３Ｒの先端部は、トップクランパ２７に対して、Ｚ軸に沿って若干移動自在になっている。 As shown in FIGS. 4, 5 and 6, the elevating cylinder 33 is provided on the cylinder mount portion 31M formed on the upper surface of the central portion of the slider 31. The elevating cylinder 33 has an elevating cylinder rod 33R which is a piston rod. The elevating cylinder rod 33R faces inward. The inside is the same side as the inside of the above-mentioned top clamper 27. The tip of the elevating cylinder rod 33R is inserted into the central extending portion 27R extending downward from the top clamper 27. A connecting pin 33P is attached to the tip of the elevating cylinder rod 33R. The connecting pin 33P extends along the X axis and is inserted through an elongated hole provided on the side surface of the central extending portion 27R. Therefore, the tip of the elevating cylinder rod 33R is slightly movable along the Z axis with respect to the central extending portion 27R. That is, the tip of the elevating cylinder rod 33R is slightly movable along the Z axis with respect to the top clamper 27.
　２つのスライドシリンダ３４は、サイドクランパ２５の両端部の下面に取り付けられている。スライドシリンダ３４はピストンロッドであるスライドシリンダロッド３４Ｒを有する。スライドシリンダロッド３４Ｒは、外側へ向いている。外側とは、前述のトップクランパ２７の内側の反対側である。スライドシリンダロッド３４Ｒは、連結部３１Ｋに連結されている。連結部３１Ｋは、スライダ３１の両端部から上方に延びている。 The two slide cylinders 34 are attached to the lower surfaces of both ends of the side clamper 25. The slide cylinder 34 has a slide cylinder rod 34R which is a piston rod. The slide cylinder rod 34R faces outward. The outside is the opposite side of the inside of the above-mentioned top clamper 27. The slide cylinder rod 34R is connected to the connecting portion 31K. The connecting portion 31K extends upward from both ends of the slider 31.
　図７は、スクリーン印刷機１の制御系統を示すブロック図である。スクリーン印刷機１が有する制御装置４０は、ステージ１２、基板保持機構１３、搬入コンベア１４、搬出コンベア１５，スキージ移動機構１７、スキージ上下動シリンダ１８Ｋ、カメラ１９の各動作を制御する。制御装置４０は、ステージ１２の動作制御では、Ｙ軸駆動部１２ａ、Ｘ軸駆動部１２ｂ、θ軸駆動部１２ｃおよびＺ軸駆動部１２ｄのそれぞれを制御する。制御装置４０は、基板保持機構１３の動作制御では、昇降モータ２２、中間コンベア２４、クランプシリンダ２６、トップクランパ移動機構２８（昇降シリンダ３３およびスライドシリンダ３４）のそれぞれを制御する。 FIG. 7 is a block diagram showing a control system of the screen printing machine 1. The control device 40 included in the screen printing machine 1 controls the operations of the stage 12, the substrate holding mechanism 13, the loading conveyor 14, the unloading conveyor 15, the squeegee moving mechanism 17, the squeegee vertical movement cylinder 18K, and the camera 19. In the operation control of the stage 12, the control device 40 controls each of the Y-axis drive unit 12a, the X-axis drive unit 12b, the θ-axis drive unit 12c, and the Z-axis drive unit 12d. The control device 40 controls each of the elevating motor 22, the intermediate conveyor 24, the clamp cylinder 26, and the top clamper moving mechanism 28 (elevating cylinder 33 and slide cylinder 34) in the operation control of the substrate holding mechanism 13.
　次に、図８Ａ～図２０Ｂを参照しながらスクリーン印刷機１の動作を説明する。スクリーン印刷機１の制御装置４０は、上流に位置する他の装置から図８Ａに矢印Ａで示すように基板２が送られてくると、搬入コンベア１４を作動させて基板２を受け取ってスクリーン印刷機１内に搬入する。そして、図８Ｂに示すように、搬入コンベア１４は、基板２を基板保持機構１３の中間コンベア２４に受け渡す。中間コンベア２４は、受け取った基板２を所定の位置まで搬送する。中間コンベア２４が基板２を所定の位置まで搬送したら、基板保持機構１３が基板２をクランプして保持する。 Next, the operation of the screen printing machine 1 will be described with reference to FIGS. 8A to 20B. When the substrate 2 is sent from another device located upstream from the control device 40 of the screen printing machine 1 as shown by an arrow A in FIG. 8A, the control device 40 operates the carry-in conveyor 14 to receive the substrate 2 for screen printing. Carry it into the machine 1. Then, as shown in FIG. 8B, the carry-in conveyor 14 delivers the substrate 2 to the intermediate conveyor 24 of the substrate holding mechanism 13. The intermediate conveyor 24 conveys the received substrate 2 to a predetermined position. When the intermediate conveyor 24 conveys the substrate 2 to a predetermined position, the substrate holding mechanism 13 clamps and holds the substrate 2.
　基板保持機構１３が基板２を保持するにはまず、昇降シリンダ３３が、図９に矢印Ｆ１で示すように、昇降シリンダロッド３３Ｒを後退させる。これにより昇降シリンダロッド３３Ｒの連結ピン３３Ｐが中央延出部２７Ｒを外側（図９における右）に向いて移動する。そのため、トップクランパ２７は平行リンク３２を介して外側に移動する。このとき、トップクランパ２７は、昇降シリンダロッド３３Ｒの先端部の連結ピン３３Ｐに対して若干上方に移動する。このためトップクランパ２７は全体として、矢印Ｒ１で示すように、サイドクランパ２５に対して外側上方に移動する。 In order for the substrate holding mechanism 13 to hold the substrate 2, the elevating cylinder 33 first retracts the elevating cylinder rod 33R as shown by an arrow F1 in FIG. As a result, the connecting pin 33P of the elevating cylinder rod 33R moves toward the outside (right in FIG. 9) of the central extension portion 27R. Therefore, the top clamper 27 moves outward via the parallel link 32. At this time, the top clamper 27 moves slightly upward with respect to the connecting pin 33P at the tip of the elevating cylinder rod 33R. Therefore, as a whole, the top clamper 27 moves outward and upward with respect to the side clamper 25 as shown by the arrow R1.
　トップクランパ２７がサイドクランパ２５の外側上方に移動したら、図１０に矢印Ｆ２で示すように、スライドシリンダ３４がスライドシリンダロッド３４Ｒを後退させる。これによりスライダ３１はコンベア支持部材２３に対して内側（図１０における左側）へスライドする。このためトップクランパ２７は、矢印Ｍ１で示すように、サイドクランパ２５の上方で、内側に移動する。すなわち、トップクランパ２７同志が互いに近寄る方向に移動する。 When the top clamper 27 moves upward to the outside of the side clamper 25, the slide cylinder 34 retracts the slide cylinder rod 34R as shown by the arrow F2 in FIG. As a result, the slider 31 slides inward (on the left side in FIG. 10) with respect to the conveyor support member 23. Therefore, the top clamper 27 moves inward above the side clamper 25 as indicated by the arrow M1. That is, the top clampers 27 move in the direction of approaching each other.
　トップクランパ２７が内側へ移動したら、図１１に矢印Ｆ３で示すように、昇降シリンダ３３が昇降シリンダロッド３３Ｒを前進させる。これにより昇降シリンダロッド３３Ｒが連結ピン３３Ｐを介して中央延出部２７Ｒを内側（図１１における左）に向けて移動させる。このため、トップクランパ２７は平行リンク３２を介して内側に移動する。このとき、トップクランパ２７は、連結ピン３３Ｐに対して若干下方に移動する。このためトップクランパ２７は全体として、矢印Ｒ２で示すように、サイドクランパ２５に対して内側下方に移動する。 When the top clamper 27 moves inward, the elevating cylinder 33 advances the elevating cylinder rod 33R as shown by the arrow F3 in FIG. As a result, the elevating cylinder rod 33R moves the central extension portion 27R inward (left in FIG. 11) via the connecting pin 33P. Therefore, the top clamper 27 moves inward via the parallel link 32. At this time, the top clamper 27 moves slightly downward with respect to the connecting pin 33P. Therefore, the top clamper 27 moves inward and downward with respect to the side clamper 25 as a whole, as shown by the arrow R2.
　これにより突出端部２７Ｔは、サイドクランパ２５の内側の端面から内側に突出する。以上の動作が両方のサイドクランパ２５、トップクランパ２７で実行されると、図１２Ａに示すように、トップクランパ２７のそれぞれの突出端部２７Ｔは、サイドクランパ２５同志の間の領域に突出した状態となる。このように、トップクランパ２７のそれぞれの突出端部２７Ｔがサイドクランパ２５同志の間の領域に突出した位置を、一対のトップクランパ２７の「張出位置」と称する。より詳細には、第１トップクランパは第１張出位置に突出し、第２トップクランパは第２張出位置に突出する。本実施の形態では、コンベア支持部材２３のそれぞれに設けられたトップクランパ２７とサイドクランパ２５において、張出位置に位置した状態におけるトップクランパ２７の下面は、サイドクランパ２５の上面の高さと同じ高さになるように構成されていてもよい。すなわち、第１張出位置に位置した状態における第１トップクランパの下面は、第１サイドクランパの上面の高さと同じ高さであり、第２張出位置に位置した状態における第２トップクランパの下面は、第２サイドクランパの上面の高さと同じ高さであってよい。言い換えれば、トップクランパ２７の下面とサイドクランパ２５の上面とが接していてもよい。基板２に反りがある場合、サイドクランパ２５により基板２を挟む力で、反りを矯正することがある。このような操作をする場合、トップクランパ２７の下面がサイドクランパ２５の上面と同じ高さであれば、トップクランパ２７の下面に基板２が当接して必要以上に基板２が変形することを防ぐことができる。その結果、印刷時に、基板２とサイドクランパ２５とをマスクプレート１６に密着させることができ、ペーストの基板２に対する印刷品質を確保できる。 As a result, the protruding end portion 27T protrudes inward from the inner end face of the side clamper 25. When the above operation is executed by both the side clampers 25 and the top clamper 27, as shown in FIG. 12A, each protruding end portion 27T of the top clamper 27 protrudes into the region between the side clampers 25. It becomes. The position where each of the protruding end portions 27T of the top clampers 27 protrudes into the region between the side clampers 25 is referred to as a “overhanging position” of the pair of top clampers 27. More specifically, the first top clamper projects to the first overhang position and the second top clamper projects to the second overhang position. In the present embodiment, in the top clamper 27 and the side clamper 25 provided on the conveyor support member 23, the lower surface of the top clamper 27 in the overhanging position is the same height as the upper surface of the side clamper 25. It may be configured to be different. That is, the lower surface of the first top clamper in the state of being located in the first overhang position is the same height as the height of the upper surface of the first side clamper, and the lower surface of the second top clamper in the state of being located in the second overhang position. The lower surface may be at the same height as the upper surface of the second side clamper. In other words, the lower surface of the top clamper 27 and the upper surface of the side clamper 25 may be in contact with each other. When the substrate 2 has a warp, the warp may be corrected by the force of sandwiching the substrate 2 by the side clamper 25. When performing such an operation, if the lower surface of the top clamper 27 is at the same height as the upper surface of the side clamper 25, it is possible to prevent the substrate 2 from coming into contact with the lower surface of the top clamper 27 and being deformed more than necessary. be able to. As a result, the substrate 2 and the side clamper 25 can be brought into close contact with the mask plate 16 at the time of printing, and the print quality of the paste on the substrate 2 can be ensured.
　トップクランパ２７のそれぞれの突出端部２７Ｔがサイドクランパ２５の間に領域に突出した状態となったら、図１２Ｂに矢印Ｌで示すように、昇降モータ２２が下受けユニット２１を上昇させる。これにより、下受けユニット２１が中間コンベア２４上の基板２を押し上げる。すなわち、基板保持機構１３は、図１２Ａ、図１３Ａに示す状態から、図１２Ｂ、図１３Ｂに示す状態に遷移する。このように下受けユニット２１は、ワークである基板２を押し上げる押上げ部として機能する。 When each protruding end 27T of the top clamper 27 protrudes into the region between the side clampers 25, the elevating motor 22 raises the lower receiving unit 21 as shown by an arrow L in FIG. 12B. As a result, the lower receiving unit 21 pushes up the substrate 2 on the intermediate conveyor 24. That is, the substrate holding mechanism 13 transitions from the state shown in FIGS. 12A and 13A to the state shown in FIGS. 12B and 13B. In this way, the lower receiving unit 21 functions as a pushing-up portion that pushes up the substrate 2 which is a work.
　下受けユニット２１が基板２を押し上げると、図１２Ｂ、図１３Ｂおよび図１４に示すように、Ｙ軸の延びる方向における基板２の両端部の上面が、トップクランパ２７のそれぞれの突出端部２７Ｔに下面に下方から当接する。このため基板２の上面の高さはトップクランパ２７の下面の高さ、すなわちサイドクランパ２５の上面の高さとなる。 When the lower receiving unit 21 pushes up the substrate 2, as shown in FIGS. 12B, 13B and 14, the upper surfaces of both ends of the substrate 2 in the extending direction of the Y-axis become the protruding ends 27T of the top clamper 27. It contacts the lower surface from below. Therefore, the height of the upper surface of the substrate 2 is the height of the lower surface of the top clamper 27, that is, the height of the upper surface of the side clamper 25.
　基板２の両端部がそれぞれ突出端部２７Ｔに下方から当接したら、昇降モータ２２は下受けユニット２１の上昇を停止する。すなわち、制御装置４０は、下受けユニット２１による基板２の押し上げを停止させる。そして、下受けユニット２１が基板２の押し上げを停止したら、図１５Ａおよび図１６に矢印Ｐで示すように、クランプシリンダ２６がそれぞれのクランプシリンダロッド２６Ｒを前進させる。クランプシリンダ２６がそれぞれのクランプシリンダロッド２６Ｒを前進させると、図１６に矢印Ｍ２で示すように、サイドクランパ２５はそれぞれ内側に向けて移動する。すなわち、サイドクランパ２５同志が近づくように移動する。これにより、サイドクランパ２５のそれぞれの内側の端面はＹ軸の延びる方向における基板２の両端面の一方に当接する。その結果、基板２の両端面は、図１５Ａに示すように、サイドクランパ２５によってクランプされた状態となる。 When both ends of the substrate 2 come into contact with the protruding end portions 27T from below, the elevating motor 22 stops the ascent of the lower receiving unit 21. That is, the control device 40 stops pushing up the substrate 2 by the lower receiving unit 21. Then, when the lower receiving unit 21 stops pushing up the substrate 2, the clamp cylinder 26 advances each clamp cylinder rod 26R as shown by an arrow P in FIGS. 15A and 16. When the clamp cylinder 26 advances each clamp cylinder rod 26R, the side clampers 25 move inward, respectively, as shown by an arrow M2 in FIG. That is, the side clampers 25 move so as to approach each other. As a result, each inner end surface of the side clamper 25 comes into contact with one of both end faces of the substrate 2 in the extending direction of the Y axis. As a result, both end faces of the substrate 2 are in a state of being clamped by the side clamper 25 as shown in FIG. 15A.
　このように本実施の形態において、一対のクランプシリンダ２６は制御装置４０とともに、サイドクランパ２５同志を閉じる方向に駆動してワークとしての基板２の相対する両端面をサイドクランパ２５によってクランプするサイドクランパ駆動部を構成している。 As described above, in the present embodiment, the pair of clamp cylinders 26 together with the control device 40 are driven in the direction of closing the side clampers 25, and the side clampers 25 clamp the opposite end surfaces of the substrate 2 as a work. It constitutes a drive unit.
　サイドクランパ２５が基板２の両端面をクランプすると、図１７に矢印Ｆ４で示すように、昇降シリンダ３３が昇降シリンダロッド３３Ｒを後退させる。これにより昇降シリンダロッド３３Ｒの連結ピン３３Ｐが中央延出部２７Ｒを外側（図１７における右）に向けて移動させる。そのため、矢印Ｒ３で示すように、トップクランパ２７は平行リンク３２を介して外側上方に移動する。 When the side clamper 25 clamps both end faces of the substrate 2, the elevating cylinder 33 retracts the elevating cylinder rod 33R as shown by an arrow F4 in FIG. As a result, the connecting pin 33P of the elevating cylinder rod 33R moves the central extension portion 27R toward the outside (right in FIG. 17). Therefore, as shown by the arrow R3, the top clamper 27 moves outward and upward via the parallel link 32.
　トップクランパ２７が外側上方に移動すると、図１８に矢印Ｆ５で示すように、スライドシリンダ３４がスライドシリンダロッド３４Ｒを前進させる。スライドシリンダ３４がスライドシリンダロッド３４Ｒを前進させると、スライダ３１はコンベア支持部材２３に対して外側（図１８における右側）へスライドする。そのためトップクランパ２７は、矢印Ｍ３で示すように、サイドクランパ２５の上方を外側へ向けて移動する。すなわち、トップクランパ２７は、互いに離れる方向に移動する。これによりトップクランパ２７の突出端部２７Ｔは、サイドクランパ２５の上方領域内に引っ込む。 When the top clamper 27 moves upward on the outside, the slide cylinder 34 advances the slide cylinder rod 34R as shown by an arrow F5 in FIG. When the slide cylinder 34 advances the slide cylinder rod 34R, the slider 31 slides outward (on the right side in FIG. 18) with respect to the conveyor support member 23. Therefore, the top clamper 27 moves outward with the upper side of the side clamper 25 as shown by the arrow M3. That is, the top clampers 27 move in a direction away from each other. As a result, the protruding end portion 27T of the top clamper 27 is retracted into the upper region of the side clamper 25.
　トップクランパ２７がサイドクランパ２５の上方領域内に引っ込むと、図１９に矢印Ｆ６で示すように、昇降シリンダ３３が昇降シリンダロッド３３Ｒを前進させる。昇降シリンダロッド３３Ｒが前進すると、昇降シリンダロッド３３Ｒの連結ピン３３Ｐが、中央延出部２７Ｒを内側（図１９における左）に向けて移動させる。そのため、トップクランパ２７は、矢印Ｒ４で示すように、平行リンク３２を介して内側下方に移動する。すなわち、トップクランパ２７は下降する。これによりトップクランパ２７は、図１９に示すように、サイドクランパ２５の上面に開口した格納スペース２５Ｓに格納された位置に移動する。トップクランパ２７が格納された位置を格納位置と称する。以上のようにして、図１５Ｂに示すように、基板保持機構１３による基板２の保持が完了する。 When the top clamper 27 retracts into the upper region of the side clamper 25, the elevating cylinder 33 advances the elevating cylinder rod 33R as shown by an arrow F6 in FIG. When the elevating cylinder rod 33R advances, the connecting pin 33P of the elevating cylinder rod 33R moves the central extension portion 27R inward (left in FIG. 19). Therefore, the top clamper 27 moves inward and downward via the parallel link 32 as shown by the arrow R4. That is, the top clamper 27 descends. As a result, as shown in FIG. 19, the top clamper 27 moves to a position stored in the storage space 25S opened on the upper surface of the side clamper 25. The position where the top clamper 27 is stored is referred to as a storage position. As described above, as shown in FIG. 15B, the holding of the substrate 2 by the substrate holding mechanism 13 is completed.
　このように、本実施の形態において、トップクランパ移動機構２８は、格納動作と張出動作とを行う。格納動作では、トップクランパ２７のそれぞれが張出位置から格納スペース２５Ｓに格納される。張出動作では、格納スペース２５Ｓに格納されたトップクランパ２７が張出位置に移動する。そして、トップクランパ２７のそれぞれが格納される格納スペース２５Ｓは、サイドクランパそれぞれの上面から下方に窪んでいる。そのため、トップクランパ２７を格納位置から張出位置へ、また張出位置から格納位置へ移動させるときのトップクランパ２７の移動経路は極めて短い。このように、一対のトップクランパ移動機構２８と制御装置４０は、トップクランパ移動部を構成している。このトップクランパ移動部は、トップクランパ２７のうちの第１トップクランパを第１格納位置と第１張出位置との間で移動させるとともに、トップクランパ２７のうちの第２トップクランパを第２格納位置と第２張出位置との間で移動させる。 As described above, in the present embodiment, the top clamper moving mechanism 28 performs the retracting operation and the extending operation. In the storage operation, each of the top clampers 27 is stored in the storage space 25S from the overhanging position. In the overhanging operation, the top clamper 27 stored in the storage space 25S moves to the overhanging position. The storage space 25S in which each of the top clampers 27 is stored is recessed downward from the upper surface of each of the side clampers. Therefore, the movement path of the top clamper 27 when moving the top clamper 27 from the storage position to the overhanging position and from the overhanging position to the storage position is extremely short. As described above, the pair of top clamper moving mechanism 28 and the control device 40 constitute the top clamper moving portion. The top clamper moving unit moves the first top clamper of the top clamper 27 between the first storage position and the first overhanging position, and stores the second top clamper of the top clamper 27 in the second position. Move between the position and the second overhang position.
　また、本実施の形態では、トップクランパ移動機構２８による格納動作と張出動作はそれぞれ、昇降動作と水平移動動作との組み合わせで構成されている。昇降動作では、昇降シリンダ３３が、トップクランパ２７のそれぞれを昇降させる。水平移動動作では、スライドシリンダ３４が、トップクランパ２７を互いに近寄せ或いは互いに離れる方向に移動させる。よって、トップクランパ２７を格納位置から張出位置へ、また、張出位置から格納位置へ移動させるときの移動経路は極めて短い。 Further, in the present embodiment, the retracting operation and the extending operation by the top clamper moving mechanism 28 are composed of a combination of an elevating operation and a horizontal moving operation, respectively. In the elevating operation, the elevating cylinder 33 raises and lowers each of the top clampers 27. In the horizontal movement operation, the slide cylinder 34 moves the top clampers 27 closer to each other or away from each other. Therefore, the movement path when moving the top clamper 27 from the storage position to the overhanging position and from the overhanging position to the storage position is extremely short.
　基板保持機構１３による基板２の保持が完了すると、制御装置４０は、カメラ移動機構１９Ｋを作動させ、カメラ１９を基板保持機構１３によって保持された基板２とマスクプレート１６との間に位置させる。そして制御装置４０は、基板２に設けられた基板マーク（図示せず）とマスクプレート１６に設けられたマスクマーク（図示せず）とをカメラ１９に撮像させる。カメラ１９が基板マークとマスクマークとを撮像すると、制御装置４０は、これらのマークの画像データに基づいて、マスクプレート１６に対する基板２の位置を把握する。 When the holding of the board 2 by the board holding mechanism 13 is completed, the control device 40 operates the camera moving mechanism 19K to position the camera 19 between the board 2 held by the board holding mechanism 13 and the mask plate 16. Then, the control device 40 causes the camera 19 to take an image of the substrate mark (not shown) provided on the substrate 2 and the mask mark (not shown) provided on the mask plate 16. When the camera 19 captures the substrate mark and the mask mark, the control device 40 grasps the position of the substrate 2 with respect to the mask plate 16 based on the image data of these marks.
　マスクプレート１６に対する基板２の位置を把握すると、制御装置４０は、ステージ１２を制御して基板２を水平面内で移動させる。そして、基板マークとマスクマークが上下に対向するように、基板２を水平面内で位置合わせする。この位置合わせにより、マスクプレート１６に対して基板２が位置合わせされる。そして、基板２の位置合わせが終わったら、制御装置４０は、図２０Ａに矢印Ｈで示すように、ステージ１２を作動させて、基板保持機構１３の全体を上昇させる。これにより制御装置４０は、図２０Ｂに示すように、基板２の上面をマスクプレート１６の下面に下方から接触させる。これによりマスクプレート１６のパターン孔１６Ｈと基板２上の電極パターン２Ｄとが合致する。 Upon grasping the position of the substrate 2 with respect to the mask plate 16, the control device 40 controls the stage 12 to move the substrate 2 in the horizontal plane. Then, the substrate 2 is aligned in the horizontal plane so that the substrate mark and the mask mark face each other vertically. By this alignment, the substrate 2 is aligned with the mask plate 16. Then, when the alignment of the substrate 2 is completed, the control device 40 operates the stage 12 as shown by the arrow H in FIG. 20A to raise the entire substrate holding mechanism 13. As a result, as shown in FIG. 20B, the control device 40 brings the upper surface of the substrate 2 into contact with the lower surface of the mask plate 16 from below. As a result, the pattern hole 16H of the mask plate 16 and the electrode pattern 2D on the substrate 2 match.
　基板２がマスクプレート１６に接触すると、制御装置４０は、スキージ１８の一方を下降させて、下降されたスキージ１８の下縁をマスクプレート１６の上面に当接させる。そして、図２０Ｂに矢印Ｇで示すように、マスクプレート１６に当接させたスキージ１８をＹ軸に沿って移動させ、ペーストＰｓｔをスキージ１８によって掻き寄せる。この動作によって、マスクプレート１６のパターン孔１６Ｈ内にペーストＰｓｔを充填させる。 When the substrate 2 comes into contact with the mask plate 16, the control device 40 lowers one of the squeegees 18 and brings the lower edge of the lowered squeegee 18 into contact with the upper surface of the mask plate 16. Then, as shown by an arrow G in FIG. 20B, the squeegee 18 in contact with the mask plate 16 is moved along the Y axis, and the paste Pst is scraped by the squeegee 18. By this operation, the paste Pst is filled in the pattern hole 16H of the mask plate 16.
　マスクプレート１６のパターン孔１６Ｈ内にペーストＰｓｔが充填されると、ペーストＰｓｔが基板２の電極パターン２Ｄ上に印刷される。この後、制御装置４０は、ステージ１２を作動させて基板保持機構１３の全体を下降させ、基板２をマスクプレート１６から離間させ、版離れが行われる。 When the paste Pst is filled in the pattern hole 16H of the mask plate 16, the paste Pst is printed on the electrode pattern 2D of the substrate 2. After that, the control device 40 operates the stage 12 to lower the entire substrate holding mechanism 13, separates the substrate 2 from the mask plate 16, and releases the plates.
　版離れが終了したら、制御装置４０は、クランプシリンダ２６を作動させ、サイドクランパ２５を互いに離れる方向に移動させて、基板２のクランプを解除する。そして制御装置４０は、下受けユニット２１を移動ステージ１２ｅに対して下降させて基板２を中間コンベア２４上に降ろす。さらに制御装置４０は、中間コンベア２４と搬出コンベア１５を作動させて、中間コンベア２４上の基板２を搬出コンベア１５に受け渡す。搬出コンベア１５は、中間コンベア２４から基板２を受け取ったら、基板２をスクリーン印刷機１の外部に搬出する。 When the plate release is completed, the control device 40 operates the clamp cylinder 26 and moves the side clampers 25 in the directions away from each other to release the clamp of the substrate 2. Then, the control device 40 lowers the lower receiving unit 21 with respect to the moving stage 12e to lower the substrate 2 onto the intermediate conveyor 24. Further, the control device 40 operates the intermediate conveyor 24 and the unloading conveyor 15 to deliver the substrate 2 on the intermediate conveyor 24 to the unloading conveyor 15. When the unloading conveyor 15 receives the substrate 2 from the intermediate conveyor 24, the unloading conveyor 15 carries out the substrate 2 to the outside of the screen printing machine 1.
　以上説明したように、基板保持機構１３を有するスクリーン印刷機１では、トップクランパ２７の格納スペース２５Ｓがサイドクランパ２５の上面から窪んで（上面に開口して）設けられている。そのため、トップクランパ２７を格納位置から張出位置へ、また張出位置から格納位置へ移動させるときの移動経路は極めて短い。よって、トップクランパ２７をコンパクトな構成で移動させることができ、スクリーン印刷機１の大型化を抑制することができる。 As described above, in the screen printing machine 1 having the substrate holding mechanism 13, the storage space 25S of the top clamper 27 is recessed (opened to the upper surface) from the upper surface of the side clamper 25. Therefore, the movement path when moving the top clamper 27 from the storage position to the overhanging position and from the overhanging position to the storage position is extremely short. Therefore, the top clamper 27 can be moved in a compact configuration, and the size of the screen printing machine 1 can be suppressed.
　以上、本開示の実施の形態について説明してきたが、本開示は上述したものに限定されず、種々の変形等が可能である。例えば、上述の実施の形態では、一対のサイドクランパ２５が基板２の両端面をクランプした後、トップクランパ２７はそれぞれ、格納スペース２５Ｓへ格納される。しかしながら、トップクランパ２７の厚さ（Ｚ軸に沿った寸法）が極めて小さい場合には、トップクランパ２７を格納スペース２５Ｓへ格納させることなく、基板２をマスクプレート１６に接触させて、スクリーン印刷を実行するようにしてもよい。また、格納スペース２５Ｓは、サイドクランパ２５の上面に開口して設けられている。より詳細には、図１３Ｂに示す例では、格納スペース２５Ｓはトップクランパ２７を収容できる大きさに長方形でサイドクランパ２５を貫通している。しかしながら、トップクランパ２７を格納できれば、端部延出部２７Ｂ、中央延出部２７Ｒが挿通される部分を除き、貫通していなくてもよい。特にトップクランパ２７の厚さが極めて小さい場合には、サイドクランパ２５の上面を格納スペース２５Ｓとしてもよい。すなわち、格納スペース２５Ｓは、必ずしもサイドクランパ２５の上面から窪んで設けられていなくてもよい。このように、格納スペース２５Ｓは、サイドクランパ２５の上面側に設けられていればよい。 Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-mentioned ones, and various modifications and the like are possible. For example, in the above-described embodiment, after the pair of side clampers 25 clamp both end faces of the substrate 2, the top clampers 27 are each stored in the storage space 25S. However, when the thickness (dimension along the Z axis) of the top clamper 27 is extremely small, the substrate 2 is brought into contact with the mask plate 16 without storing the top clamper 27 in the storage space 25S, and screen printing is performed. You may want to do it. Further, the storage space 25S is provided so as to open on the upper surface of the side clamper 25. More specifically, in the example shown in FIG. 13B, the storage space 25S is rectangular and penetrates the side clamper 25 in a size that can accommodate the top clamper 27. However, if the top clamper 27 can be stored, it does not have to penetrate except for the portion through which the end extension portion 27B and the center extension portion 27R are inserted. In particular, when the thickness of the top clamper 27 is extremely small, the upper surface of the side clamper 25 may be used as the storage space 25S. That is, the storage space 25S does not necessarily have to be recessed from the upper surface of the side clamper 25. As described above, the storage space 25S may be provided on the upper surface side of the side clamper 25.
　また、上述したトップクランパ移動機構２８の構成は、一例に過ぎない。サイドクランパ２５の上面側に設けられた格納スペース２５Ｓにトップクランパ２７を格納させることができ、また格納スペース２５Ｓからトップクランパ２７を張出位置に移動させることができれば、その他の構成であっても構わない。 Further, the configuration of the top clamper moving mechanism 28 described above is only an example. If the top clamper 27 can be stored in the storage space 25S provided on the upper surface side of the side clamper 25, and if the top clamper 27 can be moved from the storage space 25S to the overhanging position, even if it has other configurations. I do not care.
　本開示のワーク保持装置およびスクリーン印刷機では、トップクランパをコンパクトな構成で移動させることができ、装置が全体として大型化するのを抑制することができる。そのため、ワーク保持装置およびスクリーン印刷機は、省スペースの観点から、産業上、有用である。 In the work holding device and the screen printing machine of the present disclosure, the top clamper can be moved in a compact configuration, and it is possible to prevent the device from becoming large as a whole. Therefore, the work holding device and the screen printing machine are industrially useful from the viewpoint of space saving.
１　　スクリーン印刷機
２　　基板（ワーク）
２Ｄ　　電極パターン
１１　　基台
１２　　ステージ
１２ａ　　Ｙ軸駆動部
１２ｂ　　Ｘ軸駆動部
１２ｃ　　θ軸駆動部
１２ｄ　　Ｚ軸駆動部
１２ｅ　　移動ステージ
１３　　基板保持機構（ワーク保持装置）
１４　　搬入コンベア
１５　　搬出コンベア
１６　　マスクプレート
１６Ｈ　　パターン孔
１６Ｗ　　フレーム
１７　　スキージ移動機構
１７ａ　　固定ビーム
１７ｂ　　移動ビーム
１８　　スキージ
１８Ｋ　　スキージ上下動シリンダ
１９　　カメラ
１９Ｋ　　カメラ移動機構
２１　　下受けユニット（ワーク押上げ部）
２１ａ　　ベース部
２２　　昇降モータ
２３　　コンベア支持部材
２３Ｂ　　ブラケット
２４　　中間コンベア
２５　　サイドクランパ
２５Ｓ　　格納スペース
２６　　クランプシリンダ
２６Ｒ　　クランプシリンダロッド
２７　　トップクランパ
２７Ｂ　　端部延出部
２７Ｒ　　中央延出部
２７Ｔ　　突出端部
２８　　トップクランパ移動機構
３１　　スライダ
３１Ｂ　　上方延出部
３１Ｋ　　連結部
３１Ｍ　　シリンダマウント部
３２　　平行リンク
３３　　昇降シリンダ
３３Ｐ　　連結ピン
３３Ｒ　　昇降シリンダロッド
３４　　スライドシリンダ
３４Ｒ　　スライドシリンダロッド
４０　　制御装置
Ｐｓｔ　　ペースト 1 Screen printing machine 2 Substrate (work)
2D Electrode pattern 11 Base 12 Stage 12a Y-axis drive unit 12b X-axis drive unit 12c θ-axis drive unit 12d Z-axis drive unit 12e Moving stage 13 Board holding mechanism (work holding device)
14 Carry-in conveyor 15 Carry-out conveyor 16 Mask plate 16H Pattern hole 16W Frame 17 Squeegee movement mechanism 17a Fixed beam 17b Movement beam 18 Squeegee 18K Squeegee vertical movement cylinder 19 Camera 19K Camera movement mechanism 21 Underlay unit (work push-up unit)
21a Base 22 Elevating motor 23 Conveyor support member 23B Bracket 24 Intermediate conveyor 25 Side clamper 25S Storage space 26 Clamp cylinder 26R Clamp cylinder rod 27 Top clamper 27B End extension 27R Central extension 27T Protruding end 28 Top clamper movement Mechanism 31 Slider 31B Upward extension 31K Connecting part 31M Cylinder mount part 32 Parallel link 33 Elevating cylinder 33P Connecting pin 33R Elevating cylinder rod 34 Slide cylinder 34R Slide cylinder rod 40 Control device Pst paste

Claims (5)

  1. ワークを押し上げる押上げ部と、
    前記押上げ部によって押し上げられた前記ワークを、前記ワークの相対する両端面でクランプする、第１サイドクランパ、第２サイドクランパと、
    前記第１、第２サイドクランパに前記ワークの前記両端面をクランプさせるサイドクランパ駆動部と、
    第１格納位置と、前記第１サイドクランパの上方の第１張出位置との間で可動な第１トップクランパと、第２格納位置と、前記第２サイドクランパの上方の第２張出位置との間で可動な第２トップクランパと、
    前記第１トップクランパを、前記第１格納位置と前記第１張出位置との間で移動させるとともに、前記第２トップクランパを、前記第２格納位置と前記第２張出位置との間で移動させるトップクランパ移動部と、を備え、
    前記第１サイドクランパの上面側には、前記第１格納位置に位置した前記第１トップクランパを格納する第１格納スペースが設けられ、前記第２サイドクランパの上面側には、前記第２格納位置に位置した前記第２トップクランパを格納する第２格納スペースが設けられ、
    前記第１トップクランパには、前記第１張出位置において、前記押上げ部によって押し上げられた前記ワークの前記両端部の一方における前記ワークの上面が下方から当接し、前記第２トップクランパには、前記第２張出位置において、前記押上げ部によって押し上げられた前記ワークの前記両端部の他方における前記ワークの上面が下方から当接する、
    ワーク保持装置。     The push-up part that pushes up the work and
    The first side clamper, the second side clamper, and the second side clamper, which clamp the work pushed up by the push-up portion on the opposite end surfaces of the work,
    A side clamper drive unit that clamps both end faces of the work to the first and second side clampers.
    A first top clamper that is movable between the first storage position and the first extension position above the first side clamper, a second storage position, and a second extension position above the second side clamper. The second top clamper that can move between and
    The first top clamper is moved between the first storage position and the first overhang position, and the second top clamper is moved between the second storage position and the second overhang position. Equipped with a top clamper moving part to move
    A first storage space for storing the first top clamper located at the first storage position is provided on the upper surface side of the first side clamper, and the second storage space is provided on the upper surface side of the second side clamper. A second storage space for storing the second top clamper located at the position is provided.
    At the first overhang position, the upper surface of the work at one of both ends of the work pushed up by the push-up portion abuts on the first top clamper from below, and the second top clamper is in contact with the second top clamper. At the second overhanging position, the upper surface of the work at the other end of the work pushed up by the push-up portion abuts from below.
    Work holding device.
  2. 前記トップクランパ移動部が前記第１トップクランパを前記第１張出位置に移動させ前記第２トップクランパを前記第２張出位置に移動させる際には、前記第１、第２トップクランパのそれぞれを上昇させた後、前記第１、第２トップクランパのそれぞれを互いに近寄せ、さらに前記第１、第２トップクランパのそれぞれを下降させ、
    前記トップクランパ移動部が前記第１トップクランパを前記第１格納位置に移動させ前記第２トップクランパを前記第２格納位置に移動させる際には、前記第１、第２トップクランパのそれぞれを上昇させた後、前記第１、第２トップクランパのそれぞれを互いに離れる方向に移動させ、さらに前記第１、第２トップクランパのそれぞれを下降させる、
    請求項１に記載のワーク保持装置。     When the top clamper moving unit moves the first top clamper to the first overhang position and the second top clamper to the second overhang position, each of the first and second top clampers. After raising, each of the first and second top clampers is brought closer to each other, and each of the first and second top clampers is further lowered.
    When the top clamper moving unit moves the first top clamper to the first storage position and the second top clamper to the second storage position, each of the first and second top clampers is raised. After that, each of the first and second top clampers is moved in a direction away from each other, and each of the first and second top clampers is further lowered.
    The work holding device according to claim 1.
  3. 前記第１張出位置に位置した状態における前記第１トップクランパの下面は、前記第１サイドクランパの上面の高さと実質的に同じ高さであり、前記第２張出位置に位置した状態における前記第２トップクランパの下面は、前記第２サイドクランパの上面の高さと実質的に同じ高さである、
    請求項１または２に記載のワーク保持装置。     The lower surface of the first top clamper in the state of being positioned at the first overhang position is substantially the same height as the height of the upper surface of the first side clamper, and is in the state of being located at the second overhang position. The lower surface of the second top clamper is substantially the same height as the upper surface of the second side clamper.
    The work holding device according to claim 1 or 2.
  4. 前記第１格納スペースに格納された前記第１トップクランパの上面は、前記第１サイドクランパの上面と同じ高さとなり、前記第２格納スペースに格納された前記第２トップクランパの上面は、前記第２サイドクランパの上面と同じ高さとなる、
    請求項１または２に記載のワーク保持装置。     The upper surface of the first top clamper stored in the first storage space has the same height as the upper surface of the first side clamper, and the upper surface of the second top clamper stored in the second storage space is the same. It will be the same height as the upper surface of the second side clamper,
    The work holding device according to claim 1 or 2.
  5. 請求項１～４のいずれか一項に記載のワーク保持装置と、
    パターン孔が設けられ、前記ワーク保持装置の前記第１、第２サイドクランパによってクランプされた前記ワークの上面に接触するマスクプレートと、
    前記ワークの前記上面に接触した状態の前記マスクプレート上を摺動して前記マスクプレート上のペーストを掻き寄せることで、前記パターン孔を通じて前記ワークの前記上面に前記ペーストを塗布するスキージと、を備えた、
    スクリーン印刷機。     The work holding device according to any one of claims 1 to 4,
    A mask plate provided with a pattern hole and in contact with the upper surface of the work clamped by the first and second side clampers of the work holding device.
    A squeegee that applies the paste to the upper surface of the work through the pattern holes by sliding on the mask plate in contact with the upper surface of the work and scraping the paste on the mask plate. Prepared
    Screen printing machine.
PCT/JP2020/022603 2019-06-27 2020-06-09 Workpiece holding device and screen printing machine WO2020261970A1 (en)

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