CN102139555A - screen printing device, paste material feeding method and manufacturing method of printing object - Google Patents

screen printing device, paste material feeding method and manufacturing method of printing object Download PDF

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Publication number
CN102139555A
CN102139555A CN2010105852870A CN201010585287A CN102139555A CN 102139555 A CN102139555 A CN 102139555A CN 2010105852870 A CN2010105852870 A CN 2010105852870A CN 201010585287 A CN201010585287 A CN 201010585287A CN 102139555 A CN102139555 A CN 102139555A
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China
Prior art keywords
scraper
creme
silk screen
area
printing
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Granted
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CN2010105852870A
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Chinese (zh)
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CN102139555B (en
Inventor
渡边昭彦
藤井雅治
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Juki Automation System Co ltd
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Sony Corp
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Publication of CN102139555A publication Critical patent/CN102139555A/en
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Publication of CN102139555B publication Critical patent/CN102139555B/en
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Abstract

The invention provides a screen printing device which can realize the efficiency for process time and can form a paste material with a uniform rolling diameter in the length direction of a scraper during a paste material coating process, a paste material feeding method and a manufacturing method of a printing object. In the embodiment, solder pastes are not fed continuously to two regions A and B, are fed to the region A in the Nth feeding and are fed to the region B in the N+1th feeding. The efficiency for process time can be realized by alternately feeding solder pastes to different regions A and B at different time, and a solder paste with a uniform rolling diameter can be formed in the length direction of the scraper during the paste material coating process.

Description

The manufacture method of silk-screen printing device, creme supply method and printing object thing
Technical field
The present invention relates to the manufacture method of silk-screen printing device, creme supply method and the printing object thing of creme such as printing soldering paste on the printing object thing.
Background technology
In silk-screen printing device, descend placement substrate and on this silk screen, be coated with creme at the silk screen (mask plate) that forms a plurality of holes, thereby optionally supply with creme in substrate by these holes.On substrate, print creme by the various printed patterns of such usefulness.
For example patent documentation 1 described solder printing machine is for example shown in Figure 180 as it, possesses the scolder feedway of supplying with solder cream and the scraper that is arranged at scolder feedway bottom.Scraper is arranged to removable, and is longer in the direction shape vertical with its moving direction.Solder cream is supplied between two scrapers from the pipe of scolder feedway, is coated with on mask plate by this scraper when scraper moves.Scraper is arranged to liftable, alternatively uses respectively in road and return road in the reciprocating action when coating.
The scolder of being supplied with by pipe in the solder printing machine of patent documentation 1 rolls by scraper, needs elapsed time being deployed into aspect the printing object thing is width (width of the direction vertical with the scraper moving direction) equal length of substrate.For example this problem becomes more remarkable during the substrate large tracts of land.
And when the pipe of above-mentioned scolder feedway was once supplied with a large amount of scolder, scolder launched inhomogeneous on the length direction of scraper, and the diameter that rolls of scolder produces deviation at its length direction.
The prior art document
Patent documentation 1 TOHKEMY 2004-306102 communique.
Summary of the invention
In view of the foregoing, the object of the present invention is to provide a kind of efficient activity that can realize the processing time, and coating can form the manufacture method of silk-screen printing device, creme supply method and printing object thing with the creme that rolls diameter uniformly during creme at the length direction of scraper.
For reaching above-mentioned purpose, the silk-screen printing device that the present invention's one mode relates to comprises supporting mechanism, silk screen, scraper, feed unit, travel mechanism and control module.
Described supporting mechanism is used for the supporting printing object.
Described silk screen and relative configuration of printing object thing of supporting by described supporting mechanism.
Described scraper is disposed on the described silk screen.
Described feed unit is set to and can moves along the length direction of described scraper, is used to supply with creme in described silk screen.
Described travel mechanism moves described scraper, so that the described creme that is supplied to launches on described silk screen.
Described control module is controlled the mobile of described feed unit, so that optionally supply with described creme in the predefined a plurality of zones of the described length direction along described scraper on described silk screen by described feed unit.
Feed unit does not for example make service time surpass so far time, and supplies with creme several times at different time, thereby can realize the efficient activity in processing time, and, can form at the length direction of scraper and have the creme that rolls diameter uniformly.
Described travel mechanism can move back and forth described scraper between the primary importance on the described silk screen and the described second place.At this moment, described control module is during first reciprocating action of described scraper, make the first area of described feed unit in described a plurality of zones supply with described creme, wherein, during this first reciprocating action for described scraper from turn back to after described primary importance begins to move till the described primary importance during; During second reciprocating action of carrying out with the described first reciprocating action different time of described scraper, make described feed unit second area different in described a plurality of zones supply with described creme with the first area, wherein, during this second reciprocating action for turn back to after beginning to move from described primary importance till the described primary importance during.
When different time carries out reciprocating action, supply with creme in zones of different by scraper as mentioned above,, also can form and have the creme that rolls diameter uniformly at the length direction of scraper even at scraper repeatedly during the reciprocating action.
Described silk-screen printing device can carry out printing treatment successively to a plurality of described printing object thing that is transported to successively in the described silk-screen printing device.At this moment, the printing treatment of the first printing object thing in the described printing object thing of being carried successively finish the back till beginning to the printing treatment of the next second printing object thing during, described control module makes described feed unit supply with described creme.That is to say, utilize supply with creme the swap time of the printing object thing in silk-screen printing device by feed unit.Therefore, can improve the time efficiency of printing treatment.
Feed unit can be supplied with described creme in point-like ground on described silk screen.By like this, do not need partly to form the ejection of the creme of this feed unit longer along the length direction (vertically) of scraper.Therefore, maintenance such as the cleaning of feed unit transfiguration is easy.
The creme supply method that the present invention's one mode relates to is supplied with creme for the first area in predefined a plurality of zones along the length direction of scraper, and wherein scraper is disposed on the silk screen relative with the printing object thing.
By described scraper the described creme that is fed into described first area is launched on described silk screen.
Second area in described a plurality of zones is supplied with described creme, and described second area is the zone different with described first area on the described silk screen.
By described scraper the described creme that is fed into described second area is launched on described silk screen.
For example feed unit does not make once service time surpass so far time, gets final product in these two zones and supply with creme respectively at different time.By like this, can realize the efficient activity in processing time, and can have the creme that rolls diameter uniformly in the length direction formation of scraper.Creme can be supplied on the silk screen to point-like.
In above-mentioned supply method, be deployed on the described silk screen in order to make described creme, described scraper can be carried out first reciprocating action, and the described primary importance from described silk screen begins to move, and turns back to described primary importance after the second place is turned back.And, for described creme is deployed on the described silk screen, described scraper can also be carried out second reciprocating action of carrying out with the described first reciprocating action different time, and the described primary importance from described silk screen begins to move, and turns back to described primary importance after the second place is turned back.During described first reciprocating action, supply with described creme in described first area, during described second reciprocating action, supply with described creme in described second area.
Can carry out printing treatment to a plurality of described printing object things successively.At this moment, the printing treatment of the first printing object thing in described a plurality of printing object things is finished to play before the printing treatment of the Next second printing object thing of beginning, supply with described creme by described feed unit.
The manufacture method of the printing object thing that the present invention's one mode relates to is supplied with creme for the first area in predefined a plurality of zones along the length direction of scraper, and described scraper is disposed on the silk screen relative with the printing object thing.
The described creme that is fed into described first area is deployed on the described silk screen by described scraper.
Second area in described a plurality of zones is supplied with described creme, and described second area is the zone different with described first area on the described silk screen.
The described creme that is fed into second area is deployed on the described silk screen by described scraper.
The effect of invention
As mentioned above, can realize the efficient activity in processing time according to the present invention, and, can have the creme that rolls diameter uniformly in the length direction formation of scraper during the coating creme.
Description of drawings
Fig. 1 illustrates for example schematic side elevation of solder printing device for the silk-screen printing device that relates to as one embodiment of the present invention;
Fig. 2 is the schematic plan view of solder printing device shown in Figure 1, wherein comprises the block diagram of the control system structure that this solder printing device is shown;
Fig. 3 is the schematic diagram of feed unit;
Fig. 4 is the diagrammatic side view of doctor unit;
Fig. 5 is the schematic isometric that a doctor unit is shown;
Fig. 6 is the process chart of the action of solder printing device;
Fig. 7 is the figure that is used to illustrate the solder printing device of action;
Fig. 8 is the figure that is used to illustrate the solder printing device of action;
Fig. 9 is the figure that is used to illustrate the solder printing device of action;
Figure 10 is the figure that is used to illustrate the solder printing device of action;
Figure 11 is the figure that is used to illustrate the solder printing device of action;
Figure 12 is the figure that is used to illustrate the solder printing device of action;
Figure 13 is the figure that is used to illustrate the solder printing device of action;
Among Figure 14 (A) and (B) supply with the figure of solder cream position for explanation;
Figure 15 is for ease of understanding the flow chart of supplying with the solder cream time in the flow chart shown in Figure 6; And
Figure 16 is the enlarged side view of scraper and silk screen.
The specific embodiment
Embodiments of the present invention are described with reference to the accompanying drawings.
[structure of solder printing device]
Fig. 1 illustrates for example schematic side elevation of solder printing device for the silk-screen printing device that relates to as one embodiment of the present invention.Fig. 2 is the schematic plan view of solder printing device 100 shown in Figure 1, has wherein comprised the block diagram of the structure of the control system that is used to illustrate this solder printing device 100.This solder printing device 100 is that the scolder with paste is that solder cream is printed in the device as the circuit substrate W of printing object thing.In the following description, in order to should be readily appreciated that explanation, with the front portion as solder printing device 100, the right side of Y direction among Fig. 1 and 2, the left side is as the rear portion of solder printing device 100 easily.
Solder printing device 100 possesses as the table mechanism 30 of the supporting mechanism of supporting substrate and silk screen 5, places circuit substrate W on the table mechanism 30, silk screen 5 with by relative configuration of table mechanism 30 circuit supported substrate W.And solder printing device 100 possesses in the toe lateral of solder printing device 100: be disposed at the doctor unit 20 on the silk screen 5 and make this doctor unit 20 along scraper travel mechanism 19 that Y direction moves; Rear portion side at solder printing device 100 possesses: supply with solder cream on silk screen 5 feed unit 10 and make feed unit 10 along X and the moving feed unit travel mechanism 18 of y-axis shift.
Silk screen 5 has for example framework 5a and the interior 5b of mask portion of framework 5a.The top of table mechanism 30 is provided with silk screen supporting mechanism 6, is used for fixing and supports the framework 5a of silk screen 5.And, not shown silk screen 5 and silk screen supporting mechanism 6 etc. in Fig. 2.
It is pad (land) that circuit substrate W has a plurality of conductive welding pad (pad), by the 5b of mask portion solder cream is coated on this pad.That is to say, be provided with corresponding a plurality of holes (with reference to Figure 16) 5c of configuration pattern with the pad of circuit substrate W among the 5b of mask portion, supply with solder cream P (with reference to Figure 16) on pad from the 5b of mask portion by these holes 5c.
Table mechanism 30 has: mounting table 32 is used to place circuit substrate W; Clamp mechanism 31 is used to clamp on the mounting table 32 both sides of the circuit substrate W that places; And driver element 33, be used to make mounting table 32 to move at X, Y and Z axle.Clamp mechanism 31 is by for example not shown runnings such as actuator that have spring.Mounting table 32 can have the device that is used for by vacuum cup holding circuit substrate W.
Driver element 33 passes through at X and the moving mounting table 32 of y-axis shift, with respect to the silk screen 5 of silk screen supporting mechanism 6 upper supports, and alignment circuit substrate W in X-Y plane.And driver element 33 is contacted with on the silk screen 5 the circuit substrate W that places on the mounting table 32 by at Z-direction lifting mounting table 32.
As shown in Figure 2, feed unit travel mechanism 18 is disposed at the top of silk screen 5.Feed unit travel mechanism 18 possesses: X-axis travel mechanism 16 is used to make feed unit 10 to move along X-direction; And guide rail 17a, be provided with along this X-axis travel mechanism 16, be used to guide feed unit 10 to move along X-direction.And feed unit travel mechanism 18 possesses: y-axis shift actuation mechanism 17 is used to make feed unit 10 to move along Y direction; And guide rail 17a, be provided with along y-axis shift actuation mechanism 17, be used to guide feed unit 10 to move along Y direction.In y-axis shift actuation mechanism 17, be provided with two guide rail 17a.X-axis travel mechanism 16 is connected in these guide rails 17a.
X-axis travel mechanism 16 has not shown cylinder, as follows being positioned on the X-direction on two positions.Y-axis shift actuation mechanism 17 is the ball-screw driving mechanism, but can use driving mechanisms such as band, rack-and-pinion or line style engine to replace.
Fig. 3 is the schematic diagram of feed unit 10.The pipe 14 of the piston 3 that feed unit 10 possesses the container 13 of taking in solder cream, insert from container 13 peristome 13a, the lower part that is installed on piston 3 and at the lift motor 2 of Z-direction boost container 13.
Container 13 supports by the support member 12 (with reference to Fig. 1 and 2) that is connected in above-mentioned feed unit travel mechanism 18 and makes the peristome 13a of container 13 towards the below.And container 13 is supported in support member 12, can utilize not shown liftings such as riser guide by the driving of lift motor 2.The central authorities of piston 3 are provided with the through hole 3a that prolongs at above-below direction, this through hole 3a and the internal communication of managing 14.
But the bottom of pipe 14 is provided with the switch block 4 of the bottom of this pipe 14 of clamping.Switch block 4 moves in the horizontal direction by cylinder 7, thus grip tube 14 and block the opening of bottom, and, open this opening by removing this clamping.Switch block 4 grip tube 14 are cut off and will be limited on silk screen 5 by above-mentioned action and supply with solder cream from managing 14 solder creams that hang by managing 14.
In order to improve convenience, commercially available container 13 can directly be set, concrete, feed unit 10 is provided with the not shown installing component that is used to install container 13 at support member 12.
In such feed unit 10, container 13 drives by lift motor 2 and descends, and relatively piston 3 inserts inner by container 13 peristome 13a.Insert in the container 13 by this piston 3, produce pressure in container 13, by this pressure, the solder cream in the container 13 is supplied on the silk screen 5 by the through hole 3a and pipe 14 point-like of piston 3.
Point-like is supplied with solder cream and is meaned that solder cream is to see at X and Y direction essence is impartial or be supplied on the silk screen 5 near the bulk of equal-sized at X-Y plane.For example, the length on one side of substrate the length of limit (perhaps long) be 1m during with interior (for example 750mm), and the solder cream of point-like supply is 10mm~30mm in the size of this X-axis and Y direction, but is not limited to this scope.This scope unquestionable according to the solder cream of supplying with from feed unit 10 amount and difference.The viscosity of solder cream is used the material about 200 (Pas), but is not limited to this.
And feed unit 10 can also possess the driving mechanism that makes the rotation lifting on one side in X-Y plane of container 13 one side outside lift motor 2.Container 13 descends and relatively insert piston 3 in container 13 while rotating, thereby can alleviate the power that imposes on container 13 when inserting.
As shown in Figure 2, doctor unit 20 drives by scraper travel mechanism 19 as mentioned above, and the guide rail 17a of above-mentioned y-axis shift actuation mechanism 17 shares in this scraper travel mechanism 19.Scraper travel mechanism 19 moves along guide rail 17a, has the frame parts 9 that supports doctor unit 20.The motor of motor and the drive source of the y-axis shift actuation mechanism 17 that becomes feed unit 10 that becomes the drive source of scraper travel mechanism 19 is different, respectively drive feed unit 10 and scraper 21 (21a and 21b).Scraper travel mechanism 19 also is similarly the ball-screw driving mechanism with the y-axis shift actuation mechanism 17 of the travel mechanism of above-mentioned feed unit 10, but also can use driving mechanisms such as band, rack-and-pinion or line style engine to replace.
Fig. 4 is the schematic side elevation that is used to illustrate doctor unit 20.Doctor unit 20 for example has doctor blade holder 22 (22a and 22b), be used to make scraper 21 (front side scraper 21a and rear side scraper 21b) relative, and so that these scrapers 21a and 21b are that the mode that Y direction is arranged keeps scraper 21a and 21b along the moving direction of doctor unit 20 with silk screen 5.And doctor blade holder 22a and 22b maintenance front side scraper 21a and rear side scraper 21b make their length direction along X-direction.Doctor blade holder 22 is distinguished drive by not shown cylinder at above-below direction.
In the following description, at front side scraper 21a and rear side scraper 21b, only otherwise need both differences of explanation, do not need to compare explanation, then a scraper among both is described as scraper 21.
Fig. 5 is the schematic perspective view that a doctor unit 20 is shown.As shown in the figure, doctor blade holder 22 for example keep scraper 21 make scraper 21 direct of travel (among Fig. 5 shown in the right arrow) face oblique below.Symbol P represents the solder cream that rolls by scraper 21 on silk screen 5.And as shown in Figure 5, doctor blade holder 22 keeps the whole of scraper 21 tops along X-direction, but is not limited to this mode, can only keep the central portion or the many places such as maintenance central portion and both ends of the X-direction on scraper 21 tops.
As shown in Figure 4, the rear side scraper 21b place side in doctor unit 20 is provided with range sensor 57.Distance between this range sensor 57 of range sensor 57 instrumentations and the solder cream P that rolled by front side scraper 21a.Range sensor 57 can use for example optical sensor of reflection-type.Should distance by these range sensor 57 instrumentations, infer the solder cream P diameter or the amount that roll with front side scraper 21a.
As shown in Figure 1, solder printing device 100 possesses movably camera 58, and this camera 58 is configured in places and be supported in the circuit substrate W of mounting table 32 and the height and position between the silk screen 5.For alignment circuit substrate W, camera 58 moves and obtains the image of the alignment mark that for example sets in advance in circuit substrate W many places in X and Y direction two dimension.
And, be used for being connected in solder printing device 100 to the not shown conveying device that solder printing device 100 is moved into circuit substrate W and take out of this circuit substrate W after this circuit substrate W printing is finished.Conveying device can be used for example device of band, roller mode, at X-direction delivery circuit substrate W as illustrated in fig. 1 and 2.
As shown in Figure 2, the control system of solder printing device 100 possesses master computer 50, X-axis travel mechanism controller 51, y-axis shift actuation mechanism controller 52, feed unit controller 53, table mechanism controller 54, scraper travel mechanism controller 55 and doctor unit controller 56.
The driving of the X-axis travel mechanism 16 of X-axis travel mechanism controller 51 control feed units 10.The driving of the y-axis shift actuation mechanism 17 of y-axis shift actuation mechanism controller 52 control feed units 10.The driving of the lift motor 2 of feed unit controller 53 control feed units 10, switch block 4 etc.Driving in the horizontal plane of the mounting table 32 that 54 pairs of table mechanism controllers are undertaken by table mechanism 30 and lifting drive to be controlled.Scraper travel mechanism controller 55 control doctor units 20 moving along Y direction.Doctor unit controller 56 is controlled moving up and down of front side scraper 21a and rear side scraper 21b etc.
Above-mentioned each controller of master computer 50 blanket controls.And master computer 50 also is connected in range sensor 57 and camera 58.Master computer 50 receives the information that is obtained by range sensor 57 and camera 58, based on this information and executing aftermentioned predetermined process.
Each above-mentioned controller can realize with hardware, also can both realize with software and hardware.When both realized with software and hardware, this hardware comprised the memory device of storing software program at least.Master computer 50 too.At least one works as control module in these master computer 50 and each controller.
Above-mentioned hardware is typically by CPU (central processing unit, Central Processing Unit), MPU (microprocessor, Micro Processing Unit), RAM (random access memory, Random Access Memory), ROM (read-only storage, Read Only Memory), DSP (digital signal processor, Digital Signal Processor), FPGA (field programmable gate array, Field Programmable Gate Array), ASIC (special IC, Application Specific Integrated Circuit), other known hardware such as network interface is realized.Master computer 50 too.
[action of solder printing device]
Illustrate and have the action of the solder printing device 100 of structure as mentioned above.Fig. 6 is process chart in this action.And Fig. 7~13 are the figure of the solder printing device 100 that is used to illustrate this action.In Fig. 7~13, (A-1) with the side view and the plane that (A-2) are illustrated in the solder printing device 100 of mutually the same time respectively.And, (B-1) with the side view and the plane that (B-2) are illustrated in the solder printing device 100 of mutually the same time too respectively.And, (B-1) of each figure of Fig. 7~13 and (B-2) in omit the diagram of silk screen 5, table mechanism 30 etc.
For example connect the power supply of solder printing device 100, push (ST101) such as printing start buttons by the not shown operation inputting part of the toe lateral of operator by being located at solder printing device 100.Perhaps, behind ST110 described later, begin printing treatment (ST101) to circuit substrate W.
In the following description, the flow process that begins describes the moment of mainly printing treatment and new following a slice circuit substrate W from initial one or more pieces circuit substrates W that is through with being moved into solder printing device 100 beginning printing treatment.
If the beginning printing treatment, then master computer 50 judge doctor unit 20 from now on be toe lateral from solder printing device 100 to the rear portion side shifting, (ST102) still in contrast.For example, master computer 50 can be judged by utilizing scraper travel mechanism 19 affirmation doctor units, 20 present positions.
Doctor unit 20 is that the action of doctor unit 20 is as follows from the toe lateral of solder printing device 100 when the side shifting of rear portion (ST102 is).That is to say that as Fig. 7 (A-1) with (A-2) to Fig. 7 (B-1) with (B-2), front side scraper 21a descends, the lower end of this front side scraper 21a is contacted with silk screen 5, moves from anterior side direction rear portion side along Y direction by scraper travel mechanism 19 simultaneously.By like this, solder cream is deployed on the silk screen 5, and printed patterns coating scolder according to the rules is in circuit substrate W.
As described below, before the printing of ST101 began, mounting table 32 drove by driver element 33 and rises, and circuit substrate W contacts with the inner surface of silk screen 5.
And, in the present embodiment, by a scraper for example front side scraper 21a move from anterior side direction rear portion side, finish the printing treatment of a slice circuit substrate W.And 21b moves from the rear side toe lateral by the rear side scraper, finishes the printing treatment of another circuit substrate W.That is to say, finish the printing treatment of two circuit substrate W by the reciprocating action of doctor unit 20 on Y direction.
Reciprocating action herein is meant that doctor unit 20 moves along Y direction from original position doctor unit 20, and turns back the action of reposition once more in the position corresponding to the rear portion side of the rear end side of circuit substrate W.The original position of doctor unit 20 is meant that front side scraper 21a is arranged in than the position corresponding with the front end (right-hand member of Fig. 1 and 2 circuit substrate W) of circuit substrate the W more position of the doctor unit 20 during toe lateral, for example position of the doctor unit shown in Fig. 1 and 2 20.
Above-mentioned ST102 is when being, master computer 50 is set and is masked as vacation (ST103), and wherein, this sign is used to judge the supply by feed unit 10 solder creams.Be masked as fictitious time, roll diameter (ST104) by range sensor 57 instrumentations (inferring) scolder.At this moment, range sensor 57 works as the instrumentation parts at least.
Master computer 50 need to judge whether to supply with solder cream (ST105) by feed unit 10 based on this information that rolls diameter.For example, do not need to supply with solder cream when rolling diameter greater than pre-set threshold, it need supply with solder cream during less than threshold value.When ST105 judge to need supplied with solder cream, master computer 50 was set above-mentioned be masked as true (ST106) in order to carry out the processing after the aftermentioned ST111.
And at the power supply of connecting solder printing device 100, when driving scraper at first, solder cream is not supplied on the silk screen 5 at first, therefore is judged as at ST105 to be.
Printing treatment finishes (ST107 is), then as Fig. 8 (A-1) with (A-2), carries out version and separates (circuit substrate W separates from silk screen 5).As Fig. 8 (B-1) with (B-2), take out of the circuit substrate W (ST108) that always is positioned over mounting table 32 by conveying device like this.As Fig. 9 (A-1) with (A-2), move into the circuit substrate W that then carries out printing treatment on the solder printing device 100.Then, as Fig. 9 (B-1) with (B-2), circuit substrate W is placed and is supported in (ST109) on the mounting table 32.Be transported to solder printing device 100 successively according to such circuit substrate W.
Then, carry out the aligning (ST110) that is placed on the substrate on the mounting table 32 as Figure 10 (A-1) with (A-2) by camera 58 and table mechanism 30.Finish on time, return ST101.Then, as Figure 10 (B-1) with (B-2), drive by table mechanism 30, circuit substrate W is contacted with on the silk screen 5, is deployed on the silk screen 5 by rear side scraper 21b solder cream.
In above-mentioned ST102, doctor unit 20 is the rear side toe lateral from solder printing device 100 when moving (ST102 not), and master computer 50 judges whether to supply with solder cream (ST111) on silk screen 5.That is to say that the state of solder printing device 100 is as Fig. 7 (B-1) and during the state (B-2), master computer 50 receives the information that solder cream rolls diameter by range sensor 57 (with reference to Fig. 4), carries out the judgement of above-mentioned ST103.
When not needing to supply with solder cream (ST111 not), as Figure 10 (A-1), (A-2), (B-1) with (B-2), the execution printing treatment.
When in above-mentioned ST111, needing to supply with solder cream (being), carry out processing as described below.
When needing to supply with solder cream, move to the position (ST112) of regulation by feed unit travel mechanism 18 feed units 10.Figure 14 (A) and (B) for being used to illustrate the figure that supplies with the solder cream position.As these Figure 14 (A) and (B) and shown in Figure 5, feed unit 10 is that any one party among regional A and the B is optionally supplied with solder cream to the zone of the predefined point-like on silk screen 5.And, typically fix on the quality entity of the solder cream PA of supply area A and B and PB respectively.
Set the position of these regional A and B according to the configuration of circuit substrate W and scraper 21 (rear side scraper 21b).When the X-direction center of circuit substrate W is consistent in fact with the X-direction center of rear side scraper 21b, the position of the X-direction of these regional A and B be from this rear side scraper 21b mind-set both ends lateral deviation from the position of predetermined distance.Predetermined distance is 100mm~300mm for example, but is not limited to this scope.
And for example the position of the feed unit 10 on the X-direction when regional A supplies with solder cream PA is the original position of this X-direction.Then, by the X-axis travel mechanism 16 of feed unit travel mechanism 18, for example the position of the feed unit 10 that moves of above-mentioned air cylinder driven becomes the position of the feed unit 10 on the X-direction when area B is supplied with solder cream PB.
And shown in Figure 14 (B), the Y direction position of regional A and B is respectively for example position of the rear portion side (rear portion side of solder printing device 100) of the rear end side of circuit substrate W (left side among the figure).
With reference to Fig. 5, when last time supply solder cream zone is for regional A behind the ST112 (ST113 is), feed unit 10 moves to area B (ST114) by feed unit travel mechanism 18 specifically.On the other hand, when supply solder cream zone last time is area B (ST113 denys), feed unit 10 moves to regional A (ST115) by feed unit travel mechanism 18 specifically.Then, as Figure 11 (A-1), (A-2), (B-1), (B-2), Figure 12 (A-1) with (A-2), it is dotted region on the silk screen 5 in regional A or B that feed unit 10 is supplied with solder cream PA or PB.After supplying with solder cream, as Figure 12 (B-1) with (B-2), feed unit 10 returns the retreating position (original position) of rear portion side originally by the driving of feed unit travel mechanism 18.
Then, return ST101, as Figure 13 (A-1), (A-2), (B-1) with (B-2), scraper 21a begins printing treatment by the front side.By utilizing the printing treatment of this front side scraper 21a, front side scraper 21a moves to the rear end side of circuit substrate W, and then shown in dotted line among Figure 13 (B-2), the solder cream PA that is supplied to regional A merges with the solder cream P that present front side scraper 21a rolls.By such action, can form automatically and have the required solder cream that rolls diameter.
According to the result of the judgment processing of ST113, supply with solder cream to area B next time.
From Figure 10~12 as can be known, finish to finish the supply of the solder cream of feed unit 10 and handle before the printing treatment of the next circuit substrate W of beginning from the printing treatment of present circuit substrate W.By like this, can improve the time efficiency of printing treatment.Figure 15 is for ease of understanding the flow chart of this point.Time till from the N time printing treatment to the N+1 time printing treatment typically is about 15s, supplies with a solder cream in any one party in regional A and B between this 15s.
As mentioned above, in the present embodiment, and discontinuous supply solder cream is in two regional A and B, as present embodiment, and supply area A when supplying with for the N time, supply area B when the N+1 time supply.By in zones of different A and B, alternatively supplying with solder cream like this, can avoid service time once longer than the time so far at different time.Therefore, can realize the efficient activity in processing time, and, during the coating creme, can have the creme that rolls diameter uniformly in the length direction formation of scraper.
And, following described advantage is arranged by such processing.For example, when having pre-determined service time once, be difficult in two regional A and B, supply with continuously as described above solder cream.At this moment, must temporarily stop solder printing device 100.In the present embodiment, need not temporarily stop solder printing device 100, can form at the length direction of scraper and have the solder cream that rolls diameter uniformly.
And then in the present embodiment, (first reciprocating action and reciprocating action second reciprocating action of carrying out in the different time with it) supply solder cream was in different 2 regional A and B when scraper 21 carried out reciprocating action at different time.Even during scraper 21 is carrying out repeatedly reciprocating action, also can have the solder cream P that rolls diameter uniformly in the length direction formation of scraper 21 by such.
And, in the present embodiment, utilize feed unit 10 to supply with solder cream on silk screen 5 by pipe 14 point-like ground.That is, owing to do not have use for example at nozzles such as the long multiinjector types of nozzles of X-direction, slit type nozzles, so feed unit 10 cleanings become easy.By alleviating the labour and the time of maintenance like this.
For example,, for example use the scraper module shown in Fig. 2,11 of patent documentation 1, during promptly by device provisioning scolders such as slit (groove) types of nozzles, have the bothersome problem of this nozzle of cleaning when not being from managing 14 when supplying with the structure of scolders.Blocked etc. in order to suppress the scraper module, the maintenance number of times that constitutes scraper module in the construction and device of solder printing machine is more relatively.Yet, do not have such problem in the present embodiment.
Figure 16 is the enlarged side view of scraper 21 and silk screen 5.The face that contacts with solder cream P of scraper 21 and the angle between silk screen 5 surfaces are attack angle theta, and θ is set at about 60 °.
If solder cream P to roll diameter too small, then can not fill the solder cream of abundant amount among the hole 5c of silk screen 5 sometimes.At this moment, being attached to circuit substrate W pad etc., to become the amount of solder cream of part of coating object insufficient and may become bad reason.On the other hand, the diameter that rolls of solder cream P changes, then the density of solder cream P, pressure (to the pressure of circuit substrate W pad) will be different.In view of these problems, need make that to roll diameter fixing as far as possible.
Other embodiment
Embodiment described in the present invention is not limited to the embodiment of above explanation, and other various embodiments are arranged.
In the above-described embodiment, alternately supply with solder cream successively to regional A and B.Yet, be regional A when for example supplying with for the N time, be regional A when supplying with for the N+1 time, be area B during N+2 supply, be regional A...... during N+4 supply, according to such A → A → B → A → A → B → ..., this supply method is also passable.At this moment fix on the quality entity of the solder cream of supply area A and B respectively.
Perhaps for example also can set to supplying with number of times or the sequential scheduling that the solder cream zone is supplied with corresponding to the pattern that circuit substrate W should print.For example as mentioned above, regional A → A → B → A → A → B → ..., this supply method is applicable to the situation that the sum (by total aperture area in hole) of the corresponding side opening of regional A in the X-direction of circuit substrate W is Duoed than the sum of area B.
According to like this, master computer 50 that also can solder printing device 100 changes number of times, the sequential scheduling of supplying with a plurality of supply areas according to user's setting.For example, can be the pattern of supply area A only, the pattern of supply area B only.Perhaps can be for supply with the pattern of solder cream continuously to regional A and B.
Be the mode of container 13 liftings in above-mentioned feed unit 10, also can be the mode of piston 3 liftings.At this moment, 13 supported 12 in container is supported for peristome 13a upwards, and container 13 bottoms are provided with squit hole, and piston 3 can insert in the container 13 by this peristome 13a.
Feed unit travel mechanism 18 carries out the location of feed unit 10 by the driving of cylinder two positions, supply with solder cream in two dotted region A and B.Yet feed unit 10 also can be positioned in the position more than three, at this moment supplies with the dotted region of solder cream on three above silk screens 5.
In the above-described embodiment, be provided with front side scraper 21a and rear side scraper 21b, but can be at least one scraper.At this moment, in the reciprocating action solder cream also can be only toward the road or the return road launch on silk screen by this scraper.Perhaps, though scraper also can be for example on two sides that scraper is just used in the inclination that alternately changes scraper in road and the return road of reciprocating action.Perhaps, even during a scraper, can be by this scraper in alternately 180 degree rotations in X-Y plane toward road and return road in, thus make solder cream toward road and return road expansion.
Feed unit travel mechanism 18 or other above-mentioned driving mechanism are not limited to cylinder, for example can use ball-screw, rack-and-pinion, band, line style engine etc.
Regional A on the silk screen 5 and B can not be point-like, for example are the wire zone along the length direction of scraper.At this moment, spray solder cream Yi Bian feed unit 10 moves by X-axis travel mechanism one edge X-direction, by such wire be supplied in predefined a plurality of zones (a plurality of wire zone) on the silk screen 5.Typically a plurality of wire zone is for being divided into two zone along its length direction at the scraper center.Wire ground is supplied with solder cream and is meaned that the Y that is supplied in the solder cream on the silk screen 5 and the aspect ratio of X-direction are set at different.This aspect ratio for example is set at 1: 1.5 above (for example 1: 3,1: 5 etc.).
The mode of such wire supply solder cream is not only applicable to the situations of two zone supply solder creams on silk screen 5, is applicable to situation from solder cream to the zone more than three that supply with yet.Perhaps also can be to be mixed with dotted region and wire zone in a plurality of zones.
The mode that aforesaid wire is supplied with solder cream is not limited to the mode of supplying with by the feed unit described in the above-mentioned embodiment 10, can use for example nozzle of slit type.
Use solder cream as creme in the above-mentioned embodiment, but also can use scaling powder, insulating paste, other creme.
Symbol description
W... circuit substrate A, B... dotted region
5... silk screen 10... feed unit
18... the 19... of feed unit travel mechanism scraper moving mechanism
20... doctor unit 21... scraper
21a... front side scraper 21b... rear side scraper
30... table mechanism 50... master computer
53... feed unit controller 54... table mechanism controller
55... scraper moving mechanism controller 56... doctor unit controller
57... range sensor 100... printing equipment

Claims (9)

1. silk-screen printing device comprises:
Supporting mechanism is used for the supporting printing object;
Silk screen is with relative configuration of printing object thing of supporting by described supporting mechanism;
Scraper is disposed on the described silk screen;
Feed unit is set to and can moves along the length direction of described scraper, is used for supplying with creme on described silk screen;
Travel mechanism, move described scraper so that the described creme that is supplied on described silk screen; And
Control module, described control module is controlled the mobile of described feed unit, so that pass through described feed unit optionally to supplying with described creme along a plurality of zones on the predefined described silk screen of the described length direction of described scraper.
2. silk-screen printing device according to claim 1, wherein,
Described travel mechanism moves back and forth described scraper between the primary importance on the described silk screen and the second place,
Described control module is during first reciprocating action of described scraper, make the first area of described feed unit in described a plurality of zones supply with described creme, wherein, during described first reciprocating action for described scraper from described primary importance begin to move to turn back to till the described primary importance during; And, described control module is during second reciprocating action of carrying out with the described first reciprocating action different time of described scraper, make described feed unit second area different in described a plurality of zones supply with described creme with the first area, during described second reciprocating action for described scraper from described primary importance begin to move to turn back to till the described primary importance during.
3. silk-screen printing device according to claim 1 and 2, wherein,
Described silk-screen printing device can carry out printing treatment successively to a plurality of described printing object thing that is transported to successively in the described silk-screen printing device,
During till the back printing treatment to the next second printing object thing of printing treatment end of the first printing object thing in the described printing object thing of being carried successively begins, described control module makes described feed unit supply with described creme.
4. according to each described silk-screen printing device in the claim 1 to 3, wherein,
Described creme is supplied with on described feed unit point-like ground on described silk screen.
5. creme supply method, wherein,
Creme is supplied with in first area in predefined a plurality of zones along the length direction of scraper, and described scraper is disposed on the silk screen relative with the printing object thing;
By described scraper the described creme that is fed into described first area is launched on described silk screen;
Second area in described a plurality of zones is supplied with described creme, and described second area is the zone different with described first area on the described silk screen;
By described scraper the described creme that is fed into described second area is launched on described silk screen.
6. creme supply method according to claim 5, wherein,
The described primary importance that described scraper is carried out from the described silk screen begins to move to first reciprocating action that turns back to described primary importance after the second place is turned back, so that described creme launches on described silk screen,
Described scraper is carried out described primary importance from the described silk screen and is begun to move to turn back to second reciprocating action described primary importance, that carry out with the described first reciprocating action different time after the second place is turned back, so that described creme launches on described silk screen
During described first reciprocating action, supply with described creme to described first area,
During described second reciprocating action, supply with described creme to described second area.
7. according to claim 5 or 6 described creme supply methods, wherein,
A plurality of described printing object things are carried out printing treatment successively,
The printing treatment of the first printing object thing in described a plurality of printing object things finishes
The back to the beginning the next second printing object thing printing treatment till during, supply with described creme.
8. according to each described creme supply method in the claim 5 to 7, wherein,
Described creme is supplied with on point-like ground on described silk screen.
9. the manufacture method of a printing object thing, wherein,
Creme is supplied with in first area in predefined a plurality of zones along the length direction of scraper, and described scraper is disposed on the silk screen relative with the printing object thing;
By described scraper the described creme that is fed into described first area is launched on described silk screen,
Second area in described a plurality of zones is supplied with described creme, and described second area is the zone different with described first area on the described silk screen;
By described scraper the described creme that is fed into described second area is launched on described silk screen.
CN201010585287.0A 2009-12-18 2010-12-10 screen printing device, paste material feeding method and manufacturing method of printing object Expired - Fee Related CN102139555B (en)

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