CN1982056A - Screen printing device - Google Patents

Screen printing device Download PDF

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Publication number
CN1982056A
CN1982056A CN 200610144647 CN200610144647A CN1982056A CN 1982056 A CN1982056 A CN 1982056A CN 200610144647 CN200610144647 CN 200610144647 CN 200610144647 A CN200610144647 A CN 200610144647A CN 1982056 A CN1982056 A CN 1982056A
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CN
China
Prior art keywords
circuit substrate
mentioned
clamping
pressing
state
Prior art date
Application number
CN 200610144647
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Chinese (zh)
Other versions
CN1982056B (en
Inventor
墨冈浩一
Original Assignee
雅马哈发动机株式会社
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Publication date
Priority to JP2005359581A priority Critical patent/JP4884759B2/en
Priority to JP2005-359581 priority
Priority to JP2005359581 priority
Application filed by 雅马哈发动机株式会社 filed Critical 雅马哈发动机株式会社
Publication of CN1982056A publication Critical patent/CN1982056A/en
Application granted granted Critical
Publication of CN1982056B publication Critical patent/CN1982056B/en

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Abstract

A screen printing apparatus of the invention comprises: a supporting device supporting a circuit substrate from below; a clamp, from both sides, holding the side surface of the circuit substrate supported by the supporting device; a circuit substrate pressing device for pressing the circuit substrate from above, which is supported on the supporting device and maintaining the circuit substrate in a warp and then straightened state along an up-and-down direction. The circuit substrate pressing device holds the circuit substrate to move the same along a holding direction of the clamp. According to the invention, via the circuit substrate pressing device pressing the circuit substrate, a warp of the circuit substrate can be straightened and the circuit substrate can be maintained in this state.

Description

Screen printing apparatus
Technical field
The present invention relates to a kind of on circuit substrate the screen printing apparatus of paste such as coating paste scolder.
Background technology
Screen printing apparatus in the past, generally be under the state that circuit substrate set on the print station and matte coincide, on matte, move (rotation) by scraper plate, to be supplied to the paste such as paste scolder, conductive paste of matte, print (coating) assigned position to the circuit substrate through formed opening on the matte (matte opening).
The print station of above-mentioned screen printing apparatus comprises, the bogey of the circuit substrate of being moved into by approximate horizontal by conveyance band etc. from below supporting; The side of the circuit substrate that is carried from the above-mentioned bogey of sandwich makes the overlapping a pair of anchor clamps of this circuit substrate and matte simultaneously.Thus, the foregoing circuit substrate can produce warpage at above-below direction on the whole, if be in the circuit substrate of warpage state by above-mentioned anchor clamps clamping, can cause producing unnecessary gap between this circuit substrate and the matte, cause that thus paste can't be printed onto the first-class printing defects of circuit substrate.For this reason, screen printing apparatus in the past, for the warpage of circuit for rectifying substrate on above-below direction, be provided with the circuit substrate pressing device of pushing the circuit substrate that above-mentioned bogey carries from the top, under the state that the warpage state of circuit substrate is corrected, make this circuit substrate carry out overlapping with higher precision and matte.
Particularly, push the upper surface of the circuit substrate that bogey supports by the foregoing circuit substrate pressing device, warpage with this circuit for rectifying substrate, utilize the anchor clamps of a wherein side of a pair of anchor clamps to move afterwards to the anchor clamps of opposite side, side with this circuit substrate of clamping, under the state that circuit substrate is held, make this circuit substrate and matte overlapping (can refer to Patent Document 1: Japan Patent open communique spy open flat 8-1908 number).
But, the foregoing circuit substrate, when the surface was pushed by the foregoing circuit substrate pressing device thereon, by circuit substrate pressing device with from the above-mentioned bogey clamping of below supporting circuit substrate, this circuit substrate was fixed on this position thus.Therefore, even the anchor clamps of a wherein side of a pair of anchor clamps of the side of clamping circuit substrate and the side of circuit substrate are inconsistent, and move with this circuit substrate of clamping to the anchor clamps of opposite side, but, therefore be difficult to circuit substrate is carried out clamping effectively under the state that the warpage state is corrected because circuit substrate is fixed.
Summary of the invention
The present invention is intended to address the above problem, and its purpose is to provide a kind of and can comes the warpage of circuit for rectifying substrate, and hold it in the screen printing apparatus under this state by circuit substrate pressing device to the pushing of circuit substrate.
In order to address the above problem, screen printing apparatus involved in the present invention can comprise, from the bogey of below supporting circuit substrate; Push the foregoing circuit substrate that is carried on the above-mentioned bogey from the top,, and this circuit substrate is remained on the substrate pressing device of the status circuit that the warpage of above-below direction corrected; The anchor clamps of the side of the foregoing circuit substrate that is carried from the above-mentioned bogey of sandwich; Wherein, the foregoing circuit substrate pressing device keeps the foregoing circuit substrate, and it can be moved along the clamping direction of above-mentioned anchor clamps.
Adopt above-mentioned screen printing apparatus, because circuit substrate, can give clamping by circuit substrate pressing device and bogey, can move along the clamping direction of anchor clamps simultaneously, therefore the warpage of circuit substrate is corrected, and this of this circuit substrate kind of state is maintained, and it can move along the clamping direction of anchor clamps under this state simultaneously.Thus, when circuit substrate and matte overlaid, can reduce the influence that warpage produced of circuit substrate, and can suppress the generation of printing defects.
In above-mentioned screen printing apparatus, comparatively it is desirable to, the foregoing circuit substrate pressing device can comprise the press section of conflicting with the upper surface of foregoing circuit substrate, this press section can be made of the revolving member that rotates along the clamping direction of above-mentioned anchor clamps.
Adopt said structure, circuit substrate is under by the state of circuit substrate pressing device and bogey clamping, can move along the clamping direction of anchor clamps, rotatable parts also rotate with this, so circuit substrate can give clamping under the state that warpage is corrected.
In above-mentioned screen printing apparatus, comparatively it is desirable to, the foregoing circuit substrate pressing device can comprise the press section of conflicting with the surface of foregoing circuit substrate, with the bearing surface of the surperficial butt of foregoing circuit substrate, can be made of low friction member in this press section.
Adopt said structure, circuit substrate under by the state of circuit substrate pressing device and bogey clamping, can move along the clamping direction of anchor clamps.
In above-mentioned screen printing apparatus, comparatively it is desirable to, also can comprise, adsorb the sticking and holding apparatus of this circuit substrate from the below of foregoing circuit substrate; The control device of the various operations of control foregoing circuit substrate pressing device, above-mentioned anchor clamps and above-mentioned sticking and holding apparatus; Above-mentioned control device is controlled sequence of operations, makes the foregoing circuit substrate pressing device push the foregoing circuit substrate from the top, makes above-mentioned this circuit substrate of anchor clamps clamping simultaneously, and makes above-mentioned sticking and holding apparatus absorption keep this circuit substrate.
Adopt said structure, push the upper surface of circuit substrate in circuit substrate pressing device, simultaneously by under the state of this circuit substrate of anchor clamps clamping, can adsorb this circuit substrate from the below of circuit substrate by sticking and holding apparatus, therefore, circuit substrate can be adsorbed under the state that warpage obtains correcting.Thus, circuit substrate is in held state in case be held, and then warpage is difficult to be restored again.
In above-mentioned screen printing apparatus, comparatively it is desirable to, above-mentioned sticking and holding apparatus, by the control of above-mentioned control device, adsorbable maintenance foregoing circuit substrate makes it be in the possible state that moves.
Adopt said structure, the foregoing circuit substrate by circuit substrate pressing device, can more effectively give clamping under the state that warpage obtains correcting.
Description of drawings
Fig. 1 is the side view of the related screen printing apparatus of one embodiment of the present of invention.
Fig. 2 is the front view of the above-mentioned printing equipment of expression.
Fig. 3 is a vertical view of roughly representing above-mentioned printing equipment.
Fig. 4 is the print station of the above-mentioned printing equipment of expression and stereogram on every side thereof.
Fig. 5 is the clamp assembly of the above-mentioned printing equipment of expression and side view on every side thereof.
Fig. 6 is the stereogram of the position relation of location-plate in the clamping operation of the above-mentioned printing equipment of expression, the stereogram when wherein (a) expression location-plate is positioned at retreating position, the stereogram when (b) the expression location-plate is positioned at the position location.
Fig. 7 is the stereogram that the position of the various piece of the related printing equipment of the embodiment of presentation graphs 1 roughly concerns.
Fig. 8 is the stereogram of the circuit substrate pressing device of the above-mentioned printing equipment of expression.
Fig. 9 is the amplification stereogram of the circuit substrate pressing device of the above-mentioned printing equipment of expression.
Figure 10 is the block diagram of the control system of the above-mentioned printing equipment of expression.
Figure 11 is the side view of the operation of the above-mentioned printing equipment of explanation, (a) expression is in the side view of the state that carries circuit substrate, when (b) being illustrated in circuit substrate pressing device and moving, the side view that location-plate is advanced, when (c) being illustrated in circuit substrate pressing device and operating, the side view that substrate is risen, when (d) being illustrated in circuit substrate pressing device and operating, the side view that substrate is carried out clamping for fixing base.
Figure 12 is the side view of operation of the above-mentioned printing equipment of explanation, when (a) being illustrated in circuit substrate pressing device and operating, and the side view that location-plate is return for the permanent circuit substrate, the side view when (b) the expression scolder is coated.
The specific embodiment
Fig. 1 is the side view of the related screen printing apparatus of one embodiment of the present of invention, and Fig. 2 is the front view of this device, and Fig. 3 is the vertical view of this device, and Fig. 4 is the print station 10 of this device and stereogram on every side thereof.Shown in above-mentioned figure, on the pedestal 2 of this screen printing apparatus (abbreviation printing equipment), be provided with print station 10, in the both sides of this print station 10, be provided with the upstream side conveyance band 11 and the downstream conveyance band 12 of taking out of print station 10 that is used for circuit substrate W is moved into print station 10 along X-direction (carrying line).
And this printing equipment also comprises, clamp assembly 3 is used for clamping circuit substrate W; Positioning component 4, when clamping circuit substrate W and the upper surface of circuit substrate connect and it positioned; Matte assembly 5 and scraper component 6 are arranged on the top of print station 10; Camera assembly 7 is used to take circuit substrate W and matte 51; Circuit substrate pressing mechanism 8 is used to push circuit substrate; Circuit substrate W, make warpage obtain correcting by circuit substrate pressing mechanism 8, the state of being corrected in warpage gives clamping by clamp assembly 3, and with matte 51 overlaids of matte assembly 5, the scraper plate 61 by scraper component 6 carries out screen painting then under this state.
As shown in Figures 1 and 2, on pedestal 2, in horizontal plane, be provided with guide rail 211, the Y-axis workbench 21 that can be free to slide along Y direction is installed on this guide rail 211 simultaneously along Y direction with the X-direction quadrature.And, between Y-axis workbench 21 and pedestal 2, be provided with ball screw framework (not shown), by driving this ball screw framework Y-axis workbench 21 is moved along Y direction with respect to pedestal 2.
On Y-axis workbench 21, be provided with guide rail 221 along X-direction, on this guide rail 221, the X-axis workbench 22 that can be free to slide along X-direction is installed simultaneously.And, between X-axis workbench 22 and Y-axis workbench 21, be provided with ball screw framework (not shown), by driving this ball screw framework X-axis workbench 22 is moved along X-direction with respect to Y-axis workbench 21.
On X-axis workbench 22,, be provided with the R axle workbench 23 that the axis that can center on vertical (Z-direction) freely rotates through runner assembly 231.This R axle workbench 23 gives rotating drive by not shown device of rotation driving around the Z axle.
Four bights of R axle workbench 23, the slipping column 241 that (Z-direction) along the vertical direction is free to slide is installed, while is on the top of this slipping column 241, self-powered platform 24 is installed, slip by slipping column 241, can make self-powered platform 24, with respect to R axle workbench 23, along the Z-direction free lifting.And, between self-powered platform 24 and R axle workbench 23, be provided with ball screw framework 243, by driving this ball screw framework self-powered platform 24 is moved along Z-direction (above-below direction) with respect to R axle workbench 23.In the present embodiment, by self-powered platform 24 and be arranged on clamp assembly 3 on the self-powered platform 24 etc. and constitute print station 10.
On self-powered platform 24, a pair of main conveyance band 20 is installed on the structure member 25 along X-direction.This main conveyance band 20, when self-powered platform 24 was in the state of decline, its upstream one side end and downstream one side end were relative with the end of the end of above-mentioned upstream side conveyance band 11 and downstream conveyance band 12 respectively.In addition, under above-mentioned state, the gap between main conveyance band 20 and the both sides conveyance band 11,12 is set at and can makes circuit substrate W carry out conveyance between carry strap, is specially the less gap about 5mm.Therefore, in the present embodiment, produce interference for fear of main conveyance band 20 and both sides conveyance band 11,12, when main conveyance band 20 is in the decline state, restriction is because of mobile caused main conveyance plate 20 the moving on X-axis and R direction of principal axis of X-axis workbench 22 and R axle workbench 23, in order to prevent that main conveyance band 20 from producing the position skew with respect to the conveyance band 11,12 of its both sides, restriction is because of mobile caused main conveyance band 20 the moving on Y-axis and R direction of principal axis of Y-axis workbench 21 and R axle workbench 23 simultaneously.That is, main conveyance band 20, when the state that has descended, restriction is because of the mobile caused main conveyance band 20 of X-axis, Y-axis and R axle workbench 21,22,23 mobile on (X-axis, Y-axis and R direction of principal axis) in the horizontal direction.
Shown in Fig. 1~5, be arranged on the clamp assembly 3 on the self-powered platform 24, comprise clamping plate 31a, the 31b of a pair of lath-shaped, be arranged on the top of a pair of main conveyance band 20 along X-direction.The clamping plate 31a of a side wherein, be fixed on the structure member 25 (with reference to Fig. 5) that is positioned on the self-powered platform 24, the clamping plate 31b of opposite side, structure member 25 with respect to self-powered platform 24, can along the Y direction free sliding installed, and can freely be toward or away from respect to clamping plate 31a.
In addition, the clamping plate 31b of opposite side is provided with support 26b, is provided with cylinder (air cylinder) 33 between this support 26b and the structure member 25.Propelling by this cylinder 33 drives (elongation drives), the clamping plate 31b of opposite side is with support 26b, along Y direction, move to the direction of leaving the clamping plate 31a that fixes a side, thereby clamping plate 31a, 31b are separated, on the other hand, by cylinder 33 retreat driving (shorten drive), the clamping plate 31b of opposite side is along Y direction, move to close direction of fixing the clamping plate 31a of a side, thereby it is approaching that clamping plate 31a, 31b are given.Like this, by the switching of a pair of clamping plate 31a, 31b, can carry out following clamping/release to substrate W.
Shown in Fig. 3,4, be provided with a plurality of adsorption holes 35 at the upper surface of two clamping plate 31a, 31b.Form negative pressure by not shown suction device in each adsorption hole 35.Under matte 51 and the equitant state of clamping plate 31a, 31b, owing to be negative pressure in each adsorption hole 35, so matte 51 is adsorbed on the upper surface that remains on clamping plate 31a, 31b.
As shown in Figure 5, be arranged on the positioning component 4 on the self-powered platform 24 as press device, comprise location-plate 41a, the 41b of a pair of lath-shaped, correspond respectively to above-mentioned two clamping plate 31a, 31b.Wherein the location-plate 41a of a side is arranged on the structure member 25 through parallel rod (parallel link) mechanism 42, and the location-plate 41b of opposite side is arranged on the above-mentioned support 26b through parallel linkage 42.And, rotation along with two place's parallel linkages 42, two location-plate 41a, 41b, keeping under the horizontal state, can be at the retreating position that is positioned at a pair of clamping plate 31a, 31b both sides shown in Fig. 6 (a), and carrying out free to deflect between with the position location of pushing substrate above a pair of clamping plate 31a, the 31b shown in Fig. 6 (b).And two location-plate 41a, 41b, when being in retreating position, the upper surface of its upper surface and a pair of clamping plate 31a, 31b is located in the same horizontal plane, and when being in the position location, the part of its lower surface is compared with a pair of clamping plate 31a, 31b, and is side-prominent in device along Y direction.
In addition, on self-powered platform 24 and the support 26b, be provided with the cylinder 43 that is used to drive two parallel linkage mechanisms 42, propelling by cylinder 43 drives (elongation drives), a pair of location-plate 41a, 41b, along Y week direction advance to move to the position location to device is inboard, also or by cylinder 43 retreat drivings (shortening driving), a pair of location-plate 41a, 41b is separated and move to retreating position.
As shown in Figure 4, four jiaos of self-powered platform 24 as supporting member, vertically are provided with the pillar 44 in order to support positioning plates.As location-plate 41a, (keep out of the way state) when 41b is positioned at retreating position, location-plate 41a, 41b are supported by pillar 44, thereby can bear following scraper plate 61 pressure that produces when the coating paste.
As shown in Figure 4, location-plate 41a, 41b are provided with a plurality of adsorption holes 45.In each adsorption hole 45, form negative pressure by not shown suction device through suction pipe 46.As described below, under equitant state on matte 51 and location-plate 41a, the 41b, owing to be negative pressure in the adsorption hole 45, matte 51 is adsorbed on the upper surface that remains on location-plate 41a, 41b.
Shown in Fig. 1~5, on self-powered platform 24,, be provided with by the slipping column 291 carrying workbench 29 of free lifting along the vertical direction corresponding to the position between a pair of main conveyance band 20.In addition, be provided with ball screw framework (not shown) between this carrying workbench 29 and the self-powered platform 24, by driving this ball screw framework, carrying workbench 29 can move along above-below direction with respect to self-powered platform 24.This carries workbench 29, as bogey bearer circuit substrate W,, the circuit substrate W on the main conveyance band 20 can be transferred on the carrying workbench 29 and be moved upward by rising, by descending, the circuit substrate W on the carrying workbench 29 can be transferred on the main conveyance band 20.
Fig. 7 is the stereogram of position relation of the various piece of the printing equipment of representing that roughly present embodiment is related.
As Fig. 5 and shown in Figure 7, matte assembly 5 comprises the matte supporting station 52 of the left and right sides that is fixedly installed on print station 10, on this matte supporting station 52, be horizontally disposed with the matte 51 that is in the laying state, it partly is provided with peristome (pattern hole) corresponding to solder coating.On the left and right sides matte supporting station 52, front and back are respectively equipped with two mattes folders 53, and this matte folder 53 is driven by drive units such as cylinder (not shown), thereby by being pressed on the matte supporting station 52, matte 51 is fixed on the matte supporting station 52 thus with the frame section 54 of matte 51.
Be located at the scraper component 6 of matte assembly 5 tops, the scraper plate support frame 63 of the left and right sides by vertically being arranged on print station 10 is supported.Upper surface at left and right sides scraper plate support frame 63,63, be respectively equipped with along what Y direction was extended and scrape panel guide 64,64, scraping on the panel guide 64,64, be provided with the moveable arm 65 that can move freely along Y direction, moveable arm 65 is in across the state above print station 10 thus.On this moveable arm 65, be equipped with and scrape board binding 62, this is scraped board binding 62 and is provided with a pair of scraper plate 61 of distinguishing free lifting.
And, by a side scraper plate 61 wherein, wherein side to Y direction under the state that has descended moves, thus can be on matte 51 to wherein side's spreading (rolling) paste scolder S of Y direction and make its expansion, pass through the opposing party's scraper plate 61 simultaneously, other direction to Y direction under the state that has descended moves, thus can be on matte 51 to the other direction spreading paste scolder S of Y direction and make its expansion.
Fig. 8 is the camera assembly 7 of expression printing equipment and the stereogram of circuit substrate pressing device 8, and Fig. 9 is the amplification stereogram of circuit substrate pressing device 8.
Shown in Fig. 7~9, on the lower surface of above-mentioned both sides scraper plate support frame 63, be equipped with the following side rails 74,74 that extends along Y direction, be bearing in down transfer arm (moving assembly) 75 on the side rails 74,74, be erected between the left and right sides scraper plate support frame 63,63 through slide block (not shown).This transfer arm 75 can be along side rails 74 be mobile on Y direction down, and its height and position is between print station 10 that is in the state that descends and matte 51.
The outside at scraper plate support frame 63,63, be provided with along Y direction and extend ball-screw 76,76, above-mentioned left and right sides ball-screw 76,76, give rotating drive by ball screw drive motor 761,761 respectively, thereby the transfer arm 75 that is provided with the nut (not shown) that screws togather respectively with above-mentioned ball-screw 76,76 is moved along Y direction.In the present embodiment, above-mentioned left and right sides ball-screw 76,76 and ball screw drive motor 761,761 constitute transfer arm (moving assembly) 75 are moved two drive units that drive.
Above-mentioned transfer arm 75 is equipped with the camera assembly 7 that is used to take circuit substrate W and matte 51, and the circuit substrate pressing device 8 of pushing circuit substrate W from the top.In the present embodiment, transfer arm 75 is the moving assemblies that move as with respect to circuit substrate W and matte 51, and Y direction is its moving direction (the 1st direction).Therefore, by circuit substrate pressing device 8 and camera assembly 7 are set on transfer arm (moving assembly) 75, make transfer arm (moving assembly) 75 can be used as circuit substrate pressing device 8 and camera assembly 7 on Y direction when mobile shared Y direction travel mechanism.
In addition, support the following side rails 74,74 of this transfer arm 75, from comprising the circuit substrate area pressed of pushing circuit substrate W, and the operating area in presswork field that is positioned at the below of matte 51, rearward (being the direction of pointing to the depths from paper among Fig. 7,8) extends, carrying out when circuit substrate W applies the printing operation of paste, can make camera assembly 7 and circuit substrate pressing device 8 position of readiness carry out standby, interfere to prevent that above-mentioned both and print station 10 from producing at the rear that is positioned at above-mentioned operating area.Thus, transfer arm (moving assembly) 75, can with comprise foregoing circuit substrate area pressed and be positioned at matte 51 below the operating area A in presswork field give standby at a distance of the position of readiness E of certain distance, can make circuit substrate pressing device 8 and camera assembly 7 give standby at position of readiness E simultaneously thus, and circuit substrate pressing device 8 and camera assembly 7 can be delivered to operating area A from position of readiness E.
Camera assembly 7, be installed in the place ahead of transfer arm (moving assembly) 75, promptly be arranged on the position near operating area A one side, it comprises the camera (camera head) 71 with matte video camera 711 for shooting (top one side) and circuit substrate video camera 712 for shooting (below one side).This camera 71, the X-direction travel mechanism 77 in the place ahead by being arranged on transfer arm 75 can move along X-direction.Thus, camera 71, drive by X-axis travel mechanism 77 on X-direction, then the Y direction travel mechanism (transfer arm 75) by camera assembly 7 and circuit substrate pressing device 8 drives jointly on Y direction, can move to take on the XY plane thus.
X-direction travel mechanism 77 comprises the guide rail 771 that extends along the length direction (X-direction) of transfer arm 75; The slide block 772 that can on this guide rail 771, move along X-direction; The ball-screw that is screwed with nut (not shown) set on this slide block 772; This ball-screw is carried out the drive motor (not shown) of rotating drive.Camera 71 is installed on the slide block 772, and by the rotating drive of ball-screw, camera 71 can move along X-direction.Among this embodiment, X-direction travel mechanism 77 is that X-direction is the 2nd direction as the mobile device that video camera is moved along the 2nd direction with above-mentioned the 1st direction quadrature.
Matte video camera 711 for shooting can be made of the ccd video camera that comprises illuminace component etc., for being provided with towards the top, is positioned at the matte 51 of the top of camera assembly 7 with shooting.In addition, matte video camera 711 for shooting can be taken set telltale mark on the matte 51 after new matte 51 is installed, and detecting its position, thereby matte 51 and the position of circuit substrate W is adjusted.In addition, also to take, with the opening of confirming matte or its lower surface amount of residual solder etc. whether.
Circuit substrate video camera 712 for shooting is made of the ccd video camera that comprises illuminace component etc., for being provided with towards the below, is positioned at the circuit substrate W of the below of camera assembly 7 with shooting.In addition, circuit substrate video camera 712 for shooting can be taken set telltale mark of the circuit substrate W that is fixed on the print station 10 etc., with and detect its position, thereby the position of circuit substrate W and matte 51 is adjusted.
Circuit substrate pressing device 8, be installed in the place ahead of transfer arm (moving assembly) 75, particularly, be mounted on the slide block 772 of above-mentioned X-direction travel mechanism 77, adjacent with above-mentioned camera assembly 7, and move along X-direction by above-mentioned X-direction travel mechanism 77.Therefore, circuit substrate pressing device 8, can with camera assembly 7 together, on X-direction, drive by X-direction travel mechanism 77, on Y direction, drive by Y direction travel mechanism, can on the XY plane, move thus.
Shown in Fig. 8,9, circuit substrate pressing device 8 comprises the tabular framework 81 that extends along X-direction, and the press section 82 that is positioned at the below of this framework 81.
Said frame 81 is formed by the plate-like members that extends along X-direction, for preventing to produce interference with the circuit substrate of camera assembly 7 video camera 712 for shooting, is installed on the slide block 772 to compare with camera assembly 7 to operating area A one side-prominent state.
In addition, framework 81 comprises upperside frame 81a and underside frame 81b.This upperside frame 81a and underside frame 81b are connected by the support stick 83 that is provided with respectively on the length direction of said frame.Particularly, underside frame 81b, fixedly connected with an end of support stick 83 in two ends of its length direction, and the other end of this support stick 83 runs through two ends of the length direction of above-mentioned upperside frame 81a simultaneously.In addition, from the outstanding support stick 83 of the upper surface of upperside frame 81a, the set guide portion 84 in two ends of the length direction by upperside frame 81a remains on the state that can slide along the vertical direction.
In addition, at the upper surface of upperside frame 81a, be provided with Direct Action Type actuator 85.The drive rod of this actuator 85 (rod) 85a runs through upperside frame 81a, and is connected with underside frame 81b.Therefore, underside frame 81b can be toward or away from upperside frame 81a by the running of actuator 85.That is, underside frame 81b, can with upperside frame 81a circuit substrate pressing position separated by a distance, and and the off-position of upperside frame 81a butt between carry out displacement.
In addition, the lower surface of underside frame 81b is equipped with the press section 82 that is used to push circuit substrate W.This press section 82 comprises the roller 82b of two ends of support 82a that is extended along the length direction of underside frame 81b and the length direction that is installed in this support 82a.As shown in Figure 9, on underside frame 81b, the length direction (X-direction) along underside frame 81b is provided with two support 82a.
Above-mentioned rollers 82b, the direction orthogonal thereto along the side of its outer peripheral face and above-mentioned support 82a is provided with.That is, above-mentioned rollers 82b is that central shaft rotates with the X-axis.In addition, above-mentioned rollers 82b, the smallest height of its outer peripheral face is lower than the height and position of the lower surface of support 82a.That is, the part of roller 82b outer circumference surface is compared with the lower surface of support 82a, and is outstanding downwards.Therefore, when press section 82 was in the state that has descended, the upper surface of the outer circumference surface of roller 82b and circuit substrate W was conflicted.And, when roller 82b and circuit substrate W conflict, can limit circuit substrate W by above-mentioned rollers 82b and move, but the rotation by roller 82b can make circuit substrate W move along Y direction to the direction beyond the Y-axis.
Figure 10 is the block diagram of the control system of the above-mentioned printing equipment of expression.As shown in the drawing, in said apparatus, comprise the CPU91 that controls the driving of each drive division as control device; Keyboard 92 as input unit; CRT monitor 93 as display unit; And storage device 94 etc.Keyboard 92 is used for to the printing equipment input various data relevant with printing treatment, and CRT monitor 93 is used to show various information (data).And storage device 94 is used for the required various data of memory print etc.
In addition, in the present embodiment, the drive division (control object) as by CPU91 control comprises the drive division of each conveyance band 11,12,20; The drive division of each workbench 21,22,23,24,29; The drive division of clamping plate 31a, 31b and location-plate 41a, 41b (pneumatic means); The drive division of matte folder 53; The drive division of matte video camera 711 for shooting and circuit substrate video camera 712 for shooting; Ball screw drive motor 761 as the drive division of transfer arm (moving assembly) 75; Drive motor as the drive division of X-direction travel mechanism 77; The drive division of circuit substrate pressing device 8 (drive unit 85) and scraper plate 61 etc.
In the printing equipment of present embodiment, CPU91, reply from the instruction of keyboard 92 and operate, according to the shooting results of various data such as routine data, video camera 711,712 and the output information of coming the various sensors of self-detection circuit substrate position etc., the driving of above-mentioned each drive division of control is to carry out following operation automatically.
Below, with regard to the operation of above-mentioned printing equipment, describe with reference to Figure 11, side view shown in Figure 12.
Shown in Figure 11 (a),, move into main conveyance band 20 by upstream side conveyance band 11 as the circuit substrate W of printing object.And, move into the circuit substrate W of main conveyance band 20, be maintained at the assigned position on the print station 10.
Particularly, shown in Figure 11 (b), location-plate 41a, the 41b of positioning component 4 is to the device medial movement, and entering simultaneously can be from top and clamping plate 31a, 31b butt and the position location of pushing.At this moment, be positioned at the circuit substrate pressing device 8 of position of readiness E, utilize the operating time of positioning component 4 grades, move to the top of circuit substrate area pressed, promptly be fit to push the appropriate position of circuit substrate W.
Then, shown in Figure 11 (c), the carrying workbench 29 that raises is conflicted with the lower surface of circuit substrate W.And the workbench 29 that further raises is conflicted the upper surface of circuit substrate W and the lower surface (datum level) of location-plate 41a, 41b, thereby is made circuit substrate W, with respect to the upper surface of clamping plate 31a, 31b, is positioned at same plane, and gives temporary fixed.At this moment, the warpage of circuit substrate W by location-plate 41a, 41b and carrying workbench 29, obtains rectification to a certain degree.And, circuit substrate W, with the state that can carry out trickle adjustment move be carried on possibly the carrying workbench 29 on.
On the other hand, the running of the actuator 85 by circuit substrate pressing device 8 makes underside frame 81b drop to the circuit substrate pressing position from the off-position.The conflict of the upper surface by above-mentioned rollers 82b and circuit substrate W makes this roller 82b and 29 couples of circuit substrate W of carrying workbench produce clamping.Thus, circuit substrate W is under the state that warpage obtains correcting, and be positioned plate 41a, 41b carry workbench 29, and roller 82b is kept.
Subsequently shown in Figure 11 (d), approaching by clamping plate 31a, 31b makes substrate W by clamping plate 31a, 31b clamping.That is, under the state shown in Figure 11 (c), clamping plate 31b (location-plate 41b) is shifted to clamping plate 31a one side (clamping direction).At this moment, circuit substrate W carries workbench 29 by location-plate 41a, 41b, and roller 82b remains on the state that warpage obtains correcting.And by clamping plate 31b, when clamping direction pushing circuit substrate W, because roller 82b is along with the mobile of circuit substrate W rotates, so circuit substrate W is to clamping plate 31a one side shifting.Therefore, circuit substrate W to clamping plate 31a one side shifting, and gives clamping by clamping plate 31a, 31b under this state under the state that warpage obtains correcting.
Then, the underside frame 81b of circuit substrate pressing device 8 is indexed to the off-position from the circuit substrate pressing position, and roller 82b leaves the surface of circuit substrate W, and circuit substrate pressing device 8 moves to position of readiness E simultaneously.In addition, location-plate 41a, 41b move to the device outside, and stop at retreating position, so far finish the fixing operation (with reference to Figure 12 (a)) of circuit substrate W on print station 10.At this moment, circuit substrate W remains on the state that warpage obtains correcting, and the upper surface of the upper surface of location-plate 41a, 41b and clamping plate 31a, 31b is in the same plane, and clamping plate 31a, the upper surface of 31b and the upper surface of circuit substrate W are in the same plane simultaneously.
Thus, circuit substrate W by clamping plate 31a, 31b clamping after, self-powered platform 24 is risen, make location-plate 41a, 41b thus, the lower surface overlaid of the upper surface of clamping plate 31a, 31b and circuit substrate W and the matte 51 of matte assembly 5 (with reference to Figure 12 (b)).And owing to be negative pressure in the adsorption hole 45 of the adsorption hole 35 of intermediate plate 31a, 31b and location-plate 41a, 41b, matte 51 is absorbed and fixed on clamping plate 31a, 31b and location-plate 41a, the 41b.
Subsequently, the scraper plate 61 of a wherein side of scraper component 6 descends, and move to Y direction along matte 51, the paste scolder S that is supplied to matte 51 is expanded, thereby paste scolder S is printed (coating) assigned position to circuit substrate W by the pattern hole on the matte 51.
As mentioned above, the of the present invention screen printing apparatus related according to the foregoing description, by pushing circuit substrate W along the circuit substrate pressing device 8 that clamping plate 31a, 31b clamping direction move, warpage that can the circuit for rectifying substrate, and circuit substrate W remains on the state that warpage is corrected, and can also move along the clamping direction of clamping plate under this state simultaneously.Therefore, when printing, can reduce the influence that warpage produced of circuit substrate as far as possible, and can suppress the generation of printing defects.
In addition, in the above-described embodiments, the example that the mode of circuit substrate W after only using clamping plate 31a, 31b clamping by circuit substrate pressing device 8 rectification warpages is printed is illustrated, but sticking and holding apparatus can also be set, after circuit substrate W was by clamping plate 31a, 31b clamping, absorption circuit substrate W held it in the state that above-mentioned warpage obtains correcting.
Particularly, can be provided with and to form the adsorption hole of negative pressure, and can control this suction device on the surface of carrying workbench 29 by control device (CPU91) by suction device.Make by press device 8 under the state that warpage obtains correcting at circuit substrate, carry out clamping by clamping plate 31a, 31b, control suction device then, make in the above-mentioned adsorption hole to be negative pressure, thereby circuit substrate W is being fixed under the state that warpage obtains correcting on the carrying workbench 29.Adopt said structure, can prevent the circuit substrate W that warpage has been corrected and has been held, produce the recovery of warpage before overlapping and get back to the state that warpage is not corrected with matte.
In addition, above-mentioned sticking and holding apparatus as mentioned above, is after circuit substrate W is by clamping plate 31a, 31b clamping, and its absorption is remained on the carrying workbench 29.But also can pass through above-mentioned sticking and holding apparatus, in the clamping of clamping plate 31a, 31b operation, the state that can move with circuit substrate W keeps the negative pressure of this circuit substrate W, and W adsorbs maintenance to this circuit substrate.Promptly, push in circuit substrate pressing device 8, clamping plate 31a, 31b carry out in the operation of clamping simultaneously, make the negative pressure in the adsorption hole reach the degree that adsorbed circuit substrate W can move, and under this state circuit substrate W absorption being remained on the carrying workbench 29, after clamping plate 31a, 31b finish the clamping operation, under the state that the warpage of circuit substrate W obtains correcting, increase the negative pressure that attracts in the hole again, further circuit substrate W absorption is remained on the carrying workbench 29.According to said structure,,, can more effectively under the state that warpage obtains correcting, carry out clamping by circuit substrate pressing device 8 for foregoing circuit substrate W.
In addition, the circuit substrate pressing device 8 of the foregoing description, the example that roller 82b is set on support 82a is illustrated, but also can adopts the structure that constitutes among the support 82a bearing surface that the upper surface with circuit substrate W connects by low friction member, replace roller 82b.For example, in the above-described embodiments, the lower surface of support 82a is the bearing surface that the upper surface with circuit substrate W connects, and adopts this moment low friction member to constitute this bearing surface, makes the upper surface butt of itself and circuit substrate W.Thus, given under the state of clamping by circuit substrate pressing device 8 and carrying workbench 29, can push and move it circuit substrate W, thereby circuit substrate W can give clamping under the state that warpage obtains correcting at circuit substrate W.

Claims (5)

1. screen printing apparatus is characterized in that:
Comprise,
Bogey is from below supporting circuit substrate;
Circuit substrate pressing device is pushed the foregoing circuit substrate that is carried on the above-mentioned bogey from the top, and this circuit substrate is remained on the state that the warpage of above-below direction is corrected;
Anchor clamps, the side of the foregoing circuit substrate that is carried from the above-mentioned bogey of sandwich;
The foregoing circuit substrate pressing device keeps the foregoing circuit substrate, and it can be moved along the clamping direction of above-mentioned anchor clamps.
2. screen printing apparatus according to claim 1 is characterized in that:
The foregoing circuit substrate pressing device comprises the press section of conflicting with the upper surface of foregoing circuit substrate,
This press section is made of the revolving member that rotates along the clamping direction of above-mentioned anchor clamps.
3. screen printing apparatus according to claim 1 is characterized in that:
The foregoing circuit substrate pressing device comprises the press section of conflicting with the surface of foregoing circuit substrate,
This press section, the bearing surface of the surperficial butt of itself and foregoing circuit substrate is made of low friction member.
4. according to each described screen printing apparatus in the claim 1 to 3, it is characterized in that:
Also comprise,
Sticking and holding apparatus adsorbs this circuit substrate from the below of foregoing circuit substrate, and is kept;
Control device, the various operations of control foregoing circuit substrate pressing device, above-mentioned anchor clamps and above-mentioned sticking and holding apparatus;
Above-mentioned control device is controlled sequence of operations, makes the foregoing circuit substrate pressing device push the foregoing circuit substrate from the top, makes above-mentioned this circuit substrate of anchor clamps clamping simultaneously, and makes above-mentioned sticking and holding apparatus absorption keep this circuit substrate.
5. screen printing apparatus according to claim 4 is characterized in that:
Above-mentioned sticking and holding apparatus, by the control of above-mentioned control device, absorption keeps the foregoing circuit substrate, makes it be in the possible state that moves.
CN2006101446477A 2005-12-13 2006-11-10 Screen printing device CN1982056B (en)

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WO2011138791A1 (en) * 2010-05-06 2011-11-10 Niki Narendrabhai Thakore Locking/mounting device for auto trolley and design setting for flat bed screen printing machine
CN110605903A (en) * 2019-10-18 2019-12-24 陈涛 Ceramic chip screen printing machine

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JP4884759B2 (en) 2012-02-29
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