CN103770448B - The setting method of silk-screen printing device and its substrate clamped position - Google Patents
The setting method of silk-screen printing device and its substrate clamped position Download PDFInfo
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- CN103770448B CN103770448B CN201310503048.XA CN201310503048A CN103770448B CN 103770448 B CN103770448 B CN 103770448B CN 201310503048 A CN201310503048 A CN 201310503048A CN 103770448 B CN103770448 B CN 103770448B
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Abstract
The present invention provides a kind of method for printing screen and silk-screen printing device, and the printing quality generated during the relative altitude because substrate and clamping component can be prevented bad.Make at least one set of clamping component（12）With by undertake part（13）The substrate of undertaking（11）Opposite two side side abut and limit undertake part（13）On substrate（11）Horizontal direction position when, control make undertake part（13）Relative to clamping component（12）The first lifting unit relatively lifted, makes substrate（11）Above（11a）From clamping component（12）Above（12a）It protrudes upward.Thereby, it is possible to by clamping component（12）And substrate（11）Appropriate relative position is set as, can be prevented because of substrate（11）And clamping component（12）Relative altitude and the printing quality that generates is bad.
Description
Technical field
The present invention relates to the method for printing screen and silk-screen printing device that the viscoiies such as paste soldering material are printed in substrate.
Background technology
At present, soldered joint is used mostly as joint method when electronic component to be mounted on to substrate.In the method,
Before soldered joint, to viscoiies such as electrode supply soldered joint material, that is, paste soldering materials of substrate.As the viscoid
Supply method, be widely used via the silk-screen printing for being set to the pattern hole of screen mask by viscoid and being printed in substrate.
In screen printing operation, by the sandwich printing object substrate of clamping component from horizontal direction and fixed position, and by
Undertake part makes it with being abutted below screen mask in the state of the supporting substrates of following side（For example, referring to patent document
1）.
Patent document 1：Japanese Unexamined Patent Publication 2004-322479 bulletins
In order to obtain the print result of high quality in silk-screen printing, in the brushing that squeegee is made to be slided in screen mask
In, need to make the printing surface of substrate to be accurately sealed at screen mask.In order to ensure the high-precision adaptation, it is desirable that appropriate
The relative position relation of short transverse above the clamping component of the upper surface of ground setting substrate and clamping substrate.But it wraps
Containing including above-mentioned patent document example in the prior art, for ensuring the appropriate phase of the clamping component of printing quality and substrate
It is not necessarily clear and definite to position relationship.In addition, due on printing object substrate there is also deformations such as the unevenness of thickness and flexures, because
This, even if by undertake part, in the state of following correctly bearing, thereon may not also be maintained at appropriate height position
It puts, is ensuring that there are subjects in printing quality well.
Invention content
Then, the object of the present invention is to provide can prevent what is generated during the relative altitude because substrate and clamping component
The undesirable method for printing screen of printing quality and silk-screen printing device.
The method for printing screen of the present invention overlaps the screen mask for being formed with pattern hole above substrate, via described
Viscoid is printed on above the substrate by pattern hole, wherein, following process is performed successively：Substrate clamping process, by holding
Relay part is supported below the substrate, and the side on two sides for making at least one set of clamping component opposite with the substrate is supported
It connects, limits the position of the horizontal direction of the substrate in the undertake part；Substrate mask aligning process, in the substrate and
After the screen mask contraposition, the screen mask is made to be overlapped or close to above the substrate；Printing process, by making
The viscoid, as a result, via the pattern hole, is printed on the base by print head along being moved above the screen mask
Above plate, the printing is carried out in the state of making to protrude upward above the clamping component above the substrate
Process.
The silk-screen printing device of the present invention overlaps the screen mask for being formed with pattern hole above substrate, via described
Viscoid is printed on above the substrate by pattern hole, wherein, have：Undertake part is accepted below the substrate；
Clamping unit makes at least one set of clamping component and the side on two opposite sides of the substrate accepted by the undertake part
Face abuts, and limits the position of the horizontal direction of the substrate in the undertake part；First lifting unit makes the carrier
Part is relatively lifted relative to the clamping component；Bit cell, carry out the substrate accepted by the undertake part with
The contraposition of the horizontal direction of the screen mask；Second lifting unit, in order in the substrate for having carried out the contraposition
Screen mask described in superimposed thereon can carry out the distance of silk-screen printing to be close to them, make the substrate and the silk
Net mask is relatively close to after the silk-screen printing, in order to make the screen mask make institute from misplacing of stencil above the substrate
It states substrate and the screen mask relatively detaches in above-below direction；Print head, by along above the screen mask
It is mobile, the viscoid is printed on above the substrate via the pattern hole as a result,；Control unit controls the silk
The action of wire mark brush device；The control unit controls first lifting unit, so that from the clamping above the substrate
It is protruded upward above component.
In addition, the method for printing screen of the present invention overlaps the screen mask for being formed with pattern hole above substrate, warp
By the pattern hole, viscoid is printed on above the substrate, wherein, following process is performed successively：Substrate conveys work
Sequence, the ribbon conveyer below opposite two side by supporting the substrate, defined position is transported to by substrate；Base
Board clamping process is supported by undertake part below the substrate, is lifted from the ribbon conveyer by the substrate, and make to
The side on few one group of clamping component two sides opposite with the substrate abuts, and limits the substrate in the undertake part
Horizontal direction position；Substrate mask aligning process after the substrate and screen mask contraposition, makes the silk screen
Mask overlap is close above the substrate；Printing process, by the way that print head is made to be moved along above the screen mask
It is dynamic, as a result, via the pattern hole, the viscoid is printed on above described substrate, make above the substrate from
The printing process is carried out in the state of being protruded upward above the clamping component.
The silk-screen printing device of the present invention overlaps the screen mask for being formed with pattern hole above substrate, via described
Viscoid is printed on above the substrate by pattern hole, wherein, have：Substrate supply unit, it is defeated by a pair of belt
Machine is sent to support below opposite two side of the substrate, and the substrate is transported to defined position；Undertake part is held
It connects and is transported to below the substrate of the defined position；First lifting unit, by making the undertake part phase
The ribbon conveyer is relatively lifted, the substrate is lifted from the ribbon conveyer；Clamping unit makes at least
One group of clamping component and opposite two of the substrate being lifted from the ribbon conveyer by first lifting unit
The side on a side abuts, and limits the position of the horizontal direction of the substrate in the undertake part；Bit cell, carry out by
The substrate that the undertake part is accepted and the contraposition of the horizontal direction of the screen mask；Second lifting unit, in order to
The screen mask is overlapped above the substrate for having carried out the contraposition or can carry out silk screen to be close to them
The distance of printing makes the substrate and the screen mask relatively close to after the silk-screen printing, in order to make the silk screen
Mask makes the substrate and the screen mask relatively detach in above-below direction from misplacing of stencil above the substrate；Print head,
It by the viscoid via the pattern hole by along being moved above the screen mask, being printed on the base as a result,
Above plate；Control unit controls the action of the silk-screen printing device；The control unit controls first lifting unit,
So as to it is protruded upward above the clamping component above the substrate.
According to the present invention, at least one set of clamping component and opposite two of substrate accepted by undertake part are made by control
The side on a side abuts, and when position for the horizontal direction for limiting the substrate in undertake part makes undertake part relative to the folder
The first lifting unit that tight component relatively lifts, so as to be protruded upward above urgent component above substrate.As a result, can
It is enough that clamping component and substrate are set as appropriate relative position, it can prevent from generating during the relative altitude because substrate and clamping component
Printing quality it is bad.
Description of the drawings
Fig. 1 is the side view of the silk-screen printing device of an embodiment of the present invention；
Fig. 2 is the partial top view of the silk-screen printing device of an embodiment of the present invention；
Fig. 3（a）、（b）It is the action specification figure of the silk-screen printing device of an embodiment of the present invention；
Fig. 4（a）、（b）It is the action specification figure of the silk-screen printing device of an embodiment of the present invention；
Fig. 5（a）、（b）It is the definition graph of the brushing action of the silk-screen printing device of an embodiment of the present invention；
Fig. 6（a）、（b）It is that the substrate of the method for printing screen of an embodiment of the present invention and the difference of height of clamping component are surveyed
The definition graph of amount；
Fig. 7 is the measurement of the substrate of the method for printing screen of an embodiment of the present invention and the height difference measurements of clamping component
As a result definition graph；
Fig. 8 is the block diagram of the composition of the control system for the silk-screen printing device for representing an embodiment of the present invention；
Fig. 9 is the flow chart of the clamped position setting processing for the silk-screen printing device for representing an embodiment of the present invention；
Figure 10 is the flow chart of the clamped position correcting process for the silk-screen printing device for representing an embodiment of the present invention.
Symbol description
1 silk-screen printing device
2 board positioning parts
3 positioning mechanism
4 board holders
10 conveyings
11 substrates
Above 11a
12 clamping components
Above 12a
13 undertake parts
14 screen masks
16 mask plates
17 print heads
19 squeegees
20 intermediate modules
20a substrates identify video camera
20b masks identify video camera
20c range finders
Ci, Pi measurement point
Dh, Dih difference of height
Specific embodiment
In the following, the embodiments of the present invention will be described with reference to the drawings.First, with reference to Fig. 1,2 pairs of silk-screen printing devices 1
Overall construction illustrate.Silk-screen printing device 1 has the function of as follows, that is, by the way that the silk screen for being formed with pattern hole is covered
Mould is overlapped above substrate, and squeegee is made to be slid in the screen mask for being fed with the viscoiies such as solder paste, via figure
Viscoid is printed on above substrate by case hole.
In Fig. 1, silk-screen printing device 1 is is equipped with by screen mask 14 and print head in the top of board positioning part 2
The composition of 17 screen printing mechanism formed.Board positioning part 2 is to be laminated with Y-axis workbench 3Y, X-axis workbench 3X, θ axis work
The top for making the positioning mechanism 3 of the composition of 3 θ of platform be equipped with the mode that clamps the board holder 4 for keeping printing object substrate 11 and
It forms.Movable plate 3a is combined with above 3 θ of θ axis workbench, substrate elevating mechanism 5 is equipped on movable plate 3a.
Substrate elevating mechanism 5 be by the straight-moving mechanism being made of the second motor 5b, nut 5c, feed screw 5d make by
Multiple guiding axis 7 vertically slide the composition of the second lifter plate 5a liftings kept freely relative to movable plate 3a.Separately
Outside, it is equipped with substrate support elevating mechanism 6 on the second lifter plate 5a.Substrate support elevating mechanism 6 is by electronic by first
The straight-moving mechanism that machine 6b, nut 6c, feed screw 6d are formed makes by multiple guiding axis 8 relative to the second lifter plate 5a along Vertical Square
The composition that the first lifter plate 6a kept freely to sliding is lifted.
On the second lifter plate 5a, erected in X direction there are two longitudinal framing 9, in the upper end of each longitudinal framing 9, along X
Direction（Substrate conveying direction）It is set side by side with conveying 10.As shown in Fig. 2, it is equipped with belt in the inside of each conveying 10
Conveyer 10a（Also referring to Fig. 5）.On opposite two side by this pair of ribbon conveyer 10a supporting substrates 11（Y-direction
Both ends）Under state, by by conveyance drive mechanism（Illustration omitted）Horizontal drive, substrate 11 are carried out to ribbon conveyer 10a
It is transported to defined position.
Block-shaped undertake part 13 is equipped above the first lifter plate 6a, is transported to the substrate 11 of specified position
11b is accepted by the undertake part 13 risen together with the first lifter plate 6a below（With reference to Fig. 3）.Conveying 10, belt are defeated
It send below opposite two side of machine 10a and conveyance drive mechanism by a pair of of ribbon conveyer 10a supporting substrates 11, forms and use
In the substrate supply unit conveyed to specified position of silk-screen printing.
Above each conveying 10, it is equipped the clamping component 12 of elongated shape, this group of clamping component in X direction
The clamping component 12 of side in 12 is moved toward one another freely in the Y direction by clamping component driving mechanism 12b.It is as shown in Fig. 2, logical
Cross makes clamping component 12 be abutted with the side on two opposite sides of the substrate 11 undertaken by undertake part 13 and drives respectively
Clamping component driving mechanism 12b, substrate 11 are clamped by clamping component 12, limit the horizontal position of the substrate 11 in undertake part 13
It puts.
In addition, represent to be clamped the example of substrate 11 herein by one group of clamping component 12, but can also be in multiple positions of X-direction
It puts and substrate 11 is clamped by multigroup clamping component 12, clamping component 12 and clamping component driving mechanism 12b, which become, is clamped action
Clamping unit, the pinching action abuts at least one set of clamping component 12, limits the water of the substrate 11 in undertake part 13
Square to position.
In the above-described configuration, elevating mechanism 6 is accepted by drive substrate, undertake part 13 can be made relative to clamping component
12 and relatively lift.Thereby, it is possible to make substrate 11 be located at represent in the clamping of substrate 11 substrate 11 should be located at clamping
The clamped position of the relative altitude position of component 12.Therefore, substrate support elevating mechanism 6 becomes clamps to be located at substrate 11
Position and make first lifting unit of the undertake part 13 relative to 12 OQ t of clamping component.
Moreover, aforementioned clamping unit by first lifting unit make at least one set of clamping component 12 with from ribbon conveyer
The side on opposite two side for the substrate 11 that 10a is lifted abuts and carries out aforementioned pinching action.In addition, above-mentioned first liter
Unit is dropped by the way that undertake part 13 is made relatively to be lifted relative to ribbon conveyer 10a, and substrate is lifted from ribbon conveyer 10a
11。
Screen mask 14 is formed in a manner of extending mask plate 16 on mask holder 15, on mask plate 16, corresponding to base
The electrode configuration as printing object of plate 11 and be formed with multiple pattern hole 16a.It is disposed in the print of the top of screen mask 14
Brush head 17 is by print head driving mechanism 17a and in the Y direction（Brush direction）On move horizontally freely（Arrow a）, and have point
A pair of of the squeegee 19 not lifted by squeegee elevating mechanism 18.In screen printing operation, according to the row of print head 17
Into direction, make some squeegee 19 decline and with being abutted above mask plate 16, in this state, by print head driving mechanism
17a makes print head 17 be moved horizontally along above mask plate 16, is as a result, printed solder paste 21 via pattern hole 16a
Above substrate 11.
Substrate identification video camera 20a, mask identification video camera 20b, range finder 20c are equipped in the lower section of screen mask 14
The intermediate module 20 being integrally formed, the intermediate module 20 pass through intermediate module driving mechanism 22（With reference to Fig. 7）, in substrate
It is horizontally moveable in space between maintaining part 4 and screen mask 14.By the way that intermediate module 20 is made to be located at mask plate 16 and substrate
Between 11, substrate identification video camera 20a, mask identification video camera 20b are shot respectively above substrate 11, under mask plate 16
Face.By the way that processing is identified to the shooting result, to detect the position of substrate 11 and mask plate 16.In addition, range finder 20c has
There is the function for the height and position for non-contactly measuring the object for being located at the lower section such as laser displacement gauge, in a manner that measuring surface is directed downwardly
It is arranged.
In the present embodiment, the upper surface of 11a and clamping component 12 12a are measurement objects above substrate 11, based on this
A little elevation carrections as a result, measuring the difference of height of the substrate 11 and clamping component 12 when substrate 11 is accepted by undertake part 13.That is,
Range finder 20c in the state of the position of substrate 11 is limited by aforementioned clamping unit, pair until substrate 11 above 11a and
The height distance of 12a measures above clamping component 12, as to 12a and the clamping component 12 above clamping component 12
The difference of height of 11a measures above neighbouring substrate 11 difference of height measuring unit and function.
Moreover, in the present embodiment, range finder 20c becomes the substrate identification marking 11c with shooting substrate 11（With reference to figure
6）Substrate identification video camera 20a and shoot screen mask 14 identification marking（Illustration omitted）Mask identification video camera 20b
It is installed on the form of intermediate module 20 together, the intermediate module 20 passes through intermediate module driving mechanism 22（Fig. 7）By accepting
The top for the substrate 11 that component 13 is accepted is moved horizontally.
In this way, the substrate 11 accepted by undertake part 13 and clamped by clamping component 12 relative to mask plate 16 in level side
Contraposition upwards.The contraposition is carried out by the position detection result based on substrate 11 and mask plate 16 to drive positioning mechanism 3.Cause
This, positioning mechanism 3 becomes pair of the contraposition for the horizontal direction for carrying out the substrate 11 and screen mask 14 accepted by undertake part 13
Bit location.
Moreover, in silk-screen printing, in order to be overlapped mask plate 16 above the substrate 11 aligned or print
Scopiform state is not make above substrate 11 and in the case of the contactless printing that mask plate 16 contacts, in order to be close to them
Can carry out the distance of silk-screen printing, make substrate 11 and clamping component 12 relatively close to.Moreover, after screen printing, in order to make
Screen mask 14 makes substrate 11 and screen mask 14 relatively detach in the up-down direction from misplacing of stencil above substrate 11.These
Lifting action by drive substrate elevating mechanism 5 and 10 and second lifter plate 5a of conveying, longitudinal framing 9 is made to lift together come
It carries out.
Therefore, substrate elevating mechanism 5 become in order to above the substrate 11 align overlapping screen mask 14 or
Person can carry out the distance of silk-screen printing to be close to them, make substrate 11 and screen mask 14 relatively close in silk screen
After printing, in order to which screen mask 14 is made to make substrate 11 and screen mask 14 relatively in upper and lower from misplacing of stencil above substrate 11
The second lifting unit detached upwards.
Then, the operation operation step of the method for printing screen of silk-screen printing device 1 is illustrated with reference to Fig. 3, Fig. 4.
First, such as Fig. 3（a）It is shown, substrate 11 is transported to the top of undertake part 13 by the ribbon conveyer 10a of conveying 10
Specified position（Substrate conveying operation）.Conveying action passes through opposite two side by ribbon conveyer 10a supporting substrates 11
Below come carry out（With reference to Fig. 2）.
Next, such as Fig. 3（b）It is shown, by 11b below 13 supporting substrates 11 of undertake part, lifted from ribbon conveyer 10a
Substrate 11 is played, and the side on two sides for making one group of clamping component 12 opposite with substrate 11 abuts, limit undertake part 13
On substrate 11 horizontal direction position（Substrate clamping process）.That is, drive substrate accepts elevating mechanism 6（Arrow b）, make
Undertake part 13 on one lifter plate 6a rises to defined clamped position, then makes undertake part 13 relative to clamping component 12
And it relatively lifts.It is abutted as a result, with 11b below substrate 11 and lifts substrate 11, next, driving clamping component driving machine
Structure 12b moves toward one another clamping component 12, and substrate 11 is clamped clamping.
At this moment, so that 11a protrudes overhang upward from 12a above clamping component 12 above substrate 11（Difference of height
Dh）The presetting clamped position of mode.As a result, such as Fig. 5（a）Shown, substrate 11 is by undertake part 13 from ribbon conveyer 10a quilts
It lifts, the state for highlighting difference of height Dh upward from 12a above with its 11a above is clamped.
Hereafter, such as Fig. 4（a）Space shown, that intermediate module 20 is made to be in and out of between board holder 4 and screen mask 14
（Arrow c）, substrate 11, mask plate 16, and check bit are identified by substrate identification video camera 20a, mask identification video camera 20b respectively
It puts（Substrate identifies process and mask identification process）, and by range finder 20c measurement substrates 11 and the difference of height of clamping component 12
（Height difference measurements process）.Then, positioning mechanism 3 is driven by the position detection result based on substrate 11, mask plate 16, it will
The substrate 11 for being held in board holder 4 aligns in the horizontal direction relative to mask plate 16.
Here, the difference of height detection of range finder 20c is illustrated with reference to Fig. 6.Fig. 6（a）It represents for becoming detection
The difference of height of 12a and 11a above the substrate 11 near the clamping component 12 measure above the clamping component 12 of object
Measurement point setting example.The 12a and near the abutting line with substrate 11 above a pair of of clamping component 12, respectively with perseverance
Determining deviation and be set with measurement point C1~C5 and measurement point C6~C10 in column-like manner.In addition, above substrate 11 11a and with
Near the abutting line of clamping component 12, measurement point has been set separately corresponding to measurement point C1~C5 and measurement point C6~C10
P1~P5 and measurement point P6~P10.
In height difference measurements process, such as Fig. 6（b）It is shown, first, range finder 20c is made to be moved on clamping component 12, into
The elevation carrection of row measurement point Ci.Light L1 is measured that is, being irradiated from range finder 20c to measurement point Ci, by receiving its reflected light L2,
To measure the height dimension HCi from the reference position of range finder 20c to measurement point Ci.Next, make range finder 20c in clamping section
It is moved on the measurement point Pi corresponding to measurement point Ci in part 12, equally measures the elevation carrection of point Pi, measured from ranging
The reference position of device 20c is to the height dimension HPi of measurement point Pi.Then, pass through operation height dimension HCi and height dimension HPi
Difference, difference of height Dih is obtained.
Fig. 7 represents the example of the measurement result of above-mentioned height difference measurements.In the figure 7, the difference of height Dih shown in horizontal axis（i=1
~10）Represent the combination of measurement point Ci and corresponding measurement point Pi, the longitudinal axis represents difference of height Dh, that is, 11a above substrate 11
Overhang away from 12a above clamping component 12.In the present embodiment, it is minimum with representing in this multiple difference of height Dh value
The difference of height Dmh of value becomes the range of pre-defined（0.05mm~0.15mm）Mode set clamped position.
Then, after substrate 11 is aligned with the mask plate 16 for being formed with pattern hole 16a, such as Fig. 4（b）It is shown, in substrate
Overlapping mask plate 16 above 11（Substrate mask aligning process）, that is, here, making second by drive substrate elevating mechanism 5
Lifter plate 5a rises（Arrow d）, the board holder 4 for maintaining substrate 11 is made to rise overally.In addition, in contactless printing
In the case of, substrate 11 and mask plate 16 is made to be close to predetermined distance, to replace being overlapped mask plate 16 above substrate 11.
Hereafter, in print head 17, driving squeegee elevating mechanism 18 declines squeegee 19（Arrow e）, and and mask
It is abutted above plate 16.Then, print head 17 is made in pre-feed to have to move to brushing direction above the mask plate 16 of solder paste 21
It is dynamic.As a result, such as Fig. 5（b）It is shown, it is slided above mask plate 16 while squeegee 19 sweeps solder paste 21（Arrow f）,
Above substrate 11 solder paste 21 is printed via pattern hole 16a（Printing process）.
The printing process makes to protrude aforementioned protrusion upward from 12a above clamping component 12 above 11a above
Amount（Difference of height Dh）In the state of carry out.In addition, the overhang of the upper surface of slave clamping component 12 of the upper surface of substrate 11 11a 12a
It is set as less than half of the thickness t of the substrate 11.Moreover, as specific numberical range, overhang（Difference of height Dh）Setting
Range for 0.01mm~0.5mm.
Then, the composition of control system is illustrated with reference to Fig. 8.Control unit 25 has cpu function, is stored by being based on
Comprehensive Control is carried out to each portion described below in the various actions of storage part 29, processing routine, various data, to perform silk screen
The silk-screen printing operation action of printing equipment 1 and various control process.In storage part 29, except be stored with above-mentioned various actions,
Other than processing routine, various data, the substrate 11 when representing by 12 clamping substrate 11 of clamping component is also stored with relative to clamping
The upper limit of the overhang of component 12 and the overhang upper limit value 29a of lower limit, overhang lower limiting value 29b, it represents to become the base of object
The substrate thickness data 29c of the thickness of plate 11.
Control unit 25 and clamping component driving mechanism 12b, substrate support elevating mechanism 6, substrate elevating mechanism 5, aligning machine
Structure 3, print head driving mechanism 17a, range finder 20c, substrate identification video camera 20a, mask identification video camera 20b, intermediate module
Driving mechanism 22, display unit 23, operation inputting part 24 connect.Control unit 25 is by controlling clamping component driving mechanism 12b, substrate
Elevating mechanism 6, substrate elevating mechanism 5, positioning mechanism 3, print head driving mechanism 17a are accepted, performs silk-screen printing operation action.
In addition, control unit 25 has image identification function, by identifying that video camera 20a, mask identify video camera to substrate
Processing is identified in the shooting result of 20b, to carry out the substrate identification marking 11c of substrate 11（With reference to Fig. 6）And mask plate 16
The position identification of mask identification marking.In addition, control unit 25 carries out substrate identification and takes the photograph by controlling intermediate module driving mechanism 22
Camera 20a, mask are identified during the shooting of video camera 20b and the position of the intermediate module 20 of the height difference measurements of range finder 20c is controlled
System.
In silk-screen printing operation action, control unit 25 is based on overhang upper limit value 29a, the protrusion for being stored in storage part 29
Lower limiting value 29b, substrate thickness data 29c are measured, controls the first lifting unit, that is, substrate support elevating mechanism 6, so that substrate 11
11a is protruded upward from 12a above clamping component 12 above.That is, control unit 25 has the thickness and the substrate to substrate 11
The storage part 29 that the overhang of 12a is stored above 11 slave clamping component 12, and thickness and protrusion based on substrate 11
Upper limit value 29a, overhang lower limiting value 29b are measured, controls the first lifting unit.
Display unit 23 is the display devices such as liquid crystal display panel, carries out guide picture when operation, the input of operation inputting part 24
Display and the various displays for informing picture.Operation inputting part 24 is the input unit of keyboard and touch panel switch etc., is carried out
For making the operational order of the operating of silk-screen printing device 1 and the input of various data.
In addition, control unit 25 has difference of height measurement processing portion 26, clamped position setting processing portion 27, clamped position amendment
Processing unit 28 is used as inter-process function.26 height measurement results based on range finder 20c of difference of height measurement processing portion, are asked
Go out the processing of the difference of height of the upper surface of 11a and clamping component 12 12a above substrate 11.Clamped position setting processing portion 27 carries out
Set the processing of clamped position, that is, in the clamping of substrate 11, setting substrate 11 should be located at relatively high with clamping component 12
Spend position.The processing silk-screen printing device 1 the substrate kind as printing object every time replace, start production before hold
Row.In addition, clamped position correcting process portion 28 in way is produced, in the case of necessary, is modified the processing of clamped position.
That is, measurement result of the control unit 25 based on difference of height measuring unit, that is, range finder 20c, it is modified the clamped position of clamped position
Correcting process.
Then, according to the flow chart of Fig. 9 and with reference to each figure to the clamped position that is performed by clamped position setting processing portion 27
Setting processing illustrates.As above-mentioned, clamped position refer to regulation substrate 11 be fixedly clamped by clamping component 12 after state
The term of the relative position relation of the short transverse of substrate 11 and clamping component 12, therefore, as in the present embodiment, by rising
The undertake part 13 of drop is accepted substrate 11 and is kept in the composition of height and position, the height and position regulation clamping position of undertake part 13
It puts.In addition, if clamping component 12 is lifted and the relative position of the short transverse of regulation substrate 11 and clamping component 12
The height and position regulation clamped position of the composition of relationship, then clamping component 12.
In fig.9, first, the initial value of setting clamped position A（ST1）.Here, using as the A0 of provisional value as initial
Value is inputted.Hereafter, such as Fig. 3（a）Shown, substrate 11 is moved to silk-screen printing device 1（ST2）, and it is transported to carrier
The specified position of the top of part 13.Next, rising undertake part 13,11b below substrate 11 is accepted（ST3）（Substrate is held
Connect process）.
That is, such as Fig. 3（b）It is shown, in order to which undertake part 13 is made to be moved to clamped position A, that is, make to be located at substrate 11
The clamped position A0 of the hypothesis of setting is fixed tentatively for initial value, drive substrate accepts elevating mechanism 6, makes the carrier of undertaking substrate 11
Part 13 is relatively lifted relative to clamping component 12（Undertake part mobile process）.Next, perform clamping（ST4）, driving
Clamping component driving mechanism 12b supports clamping component 12 and the side on two opposite sides of the substrate 11 positioned at clamped position
It connects, the substrate 11 in undertake part 13 is clamped（Substrate clamping process）.
Then, in this state, difference of height measurement processing is performed（ST5）（Height difference measurements process）.That is, such as Fig. 4（a）Institute
Show, intermediate module 20 is made to be moved to the top of board holder 4, as described in Fig. 6, after multiple positions are to clamping substrate 11
The difference of height of 12a and 11a above the substrate 11 near the clamping component 12 measure above the clamping component 12 of state.
Next, it is determined that the height difference size represented by the measurement result obtained by height difference measurements, that is, substrate 11
Above the 11a overhangs that 12a is protruded above the clamping component 12 whether by overhang upper limit value 29a, overhang lower limit
As defined in value 29b in range（ST6）.Here, if acquired overhang is within the limits prescribed, by the clamping in the stage
Position A is set as final clamped position Af（Clamped position sets process）.
In contrast, exist（ST6）In be judged as overhang outside defined range in the case of, it is repeated multiple times execution repeatedly
Test process, the repetition test processing is carries out successively while the gradually clamped position A of update hypothesis（ST3）Shown holds
Relay part mobile process and（ST5）Shown height difference measurements process.That is, first, with the clamped position A in the stage plus default
A+b obtained by fixed increment b is new clamped position A（ST7）.Next, release the clamping of clamping component 12（ST8）, then
It returns to（ST3）, perform until（ST6）Processing.
These processing perform repeatedly until be judged as by（ST6）The overhang of acquirement within the limits prescribed, the moment
Clamped position A is set as final clamped position Af.That is, during aforementioned repetition test processing is performed repeatedly, it will be true
The difference of height at the i.e. multiple positions of measurement result for difference of height measuring unit of accepting（With reference to Fig. 6）In prescribed limit repeatedly
The clamped position of the hypothesis of test process is set as final clamped position（Clamped position sets process）, clamped position as a result,
Setting processing terminates.
Then, according to the flow chart of Figure 10 and with reference to each figure to printing treatment perform way in by clamped position correcting process
The clamped position correcting process that portion 28 performs illustrates.In Fig. 10, first, such as Fig. 3（a）Shown, substrate 11 is moved to silk
Wire mark brush device 1（ST11）, and it is transported to the specified position of the top of undertake part 13.Then, undertake part 13 is made to increase,
Accept 11b below substrate 11（ST12）（Substrate support process）.That is, such as Fig. 3（b）It is shown, it is clamped to be located at substrate 11
Position A, drive substrate accept elevating mechanism 6, make the undertake part 13 for undertaking substrate 11 opposite relative to clamping component 12
Ground lifts（Undertake part mobile process）.Next, perform clamping（ST13）, clamping component driving mechanism 12b is driven, makes clamping
Component 12 is abutted with the side on two opposite sides of the substrate 11 positioned at clamped position, and the substrate 11 in undertake part 13 is pressed from both sides
Tightly（Substrate clamping process）.
Then, at this stage, judge either with or without the necessary correcting process for performing clamped position（ST14）.That is, performing print
Brush processing during, specific condition for example when carry out object substrate batch change when, accumulation print pass reach
During stated number, continuously run presetting condition of duration when reaching the stipulated time etc. in the case of, be judged as needing to press from both sides
The execution of the correcting process of tight position, then performs what is surrounded by dotted line frame（ST15）~（ST20）Process.
It is first, and shown in Fig. 9 in the correcting process（ST5）Equally, it is measured and pressed from both sides at multiple positions by range finder 20c
The height of 12a and 11a above the substrate 11 near the clamping component 12 above the clamping component 12 of state after tight substrate 11
Low difference（Height difference measurements process）（ST15）.Next, with shown in Fig. 9（ST6）Equally, judge by by height difference measurements and
Whether the overhang that the measurement result of acquirement represents is as defined in overhang upper limit value 29a, overhang lower limiting value 29b in range
（ST16）.Here, in the case where acquired overhang is outside defined range, it is clamped the amendment of position（ST17）
（Clamped position corrects process）.In the clamped position corrects process, the processing of clamped position is modified, so that（ST15）
In become difference of height measurement object multiple positions substrate 11 above 11a be clamping component 12 above more than 12a height
Degree.
Then, after the clamped position corrects process, based on revised clamped position, undertake part movement work is carried out
Sequence thereafter, performs height difference measurements process and clamped position corrects process again.That is, first, release the clamping of substrate 11
（ST18）, based on revised clamped position, the undertake part height that performing lifts undertake part 13 is adjusted（ST19）, at this
Under state, clamping substrate 11 again（ST20）.Hereafter, it returns to（ST15）, same processing is performed repeatedly, if it is determined that serving as reasons
（ST16）The overhang that the measurement result of acquirement represents within the limits prescribed, then completes the correcting process of clamped position, returns
Return to common printing treatment process.
That is, as utilized Fig. 4（b）It is illustrated, based on by substrate identification video camera 20a, mask identification video camera 20b identification bases
It is after plate 11, mask plate 16 as a result, perform above substrate 11 be overlapped mask plate 16 substrate mask aligning process（ST21）,
Then, as utilized Fig. 5（b）It is illustrated, perform printing process（ST22）, i.e., squeegee 19 covered while sweep solder paste 21
It is slided above template 16, prints solder paste 21 via pattern hole 16a above substrate 11.
Hereafter, by the way that the second lifting unit, that is, substrate elevating mechanism 5 is driven to decline board holder 4, into enforcement substrate
11 leave the misplacing of stencil process below mask plate 16（ST23）.Then, the clamping of the clamping component 12 of substrate 11 is released, is then made
Undertake part 13 declines, and releases the undertaking state of substrate 11（ST24）.Printing treatment terminates as a result, the substrate 11 being completed for printing
By conveying 10, downstream side moves out.
It is as described above, in the silk-screen printing shown in present embodiment, make at least one set of clamping component 12 with by holding
The side on opposite two side for the substrate 11 that relay part 13 is accepted abuts and limits the level of the substrate 11 in undertake part 13
During the position in direction, control makes the first lifting unit that undertake part 13 is relatively lifted relative to clamping component 12, so that base
11a is protruded upward from 12a above clamping component 12 above plate 11.
In addition, based on being measured above clamping component 12 in the state of the position that substrate 11 is limited by clamping unit
The measurement result of 12a and the difference of height of 12a above the substrate 11 near the clamping component 12, are clamped position setting processing
Or clamped position correcting process, what clamped position setting processing setting expression substrate 11 in the clamping of substrate 11 should be located at
With the clamped position of the relative altitude position of clamping component 12, the clamped position correcting process corrects set clamping position
It puts.
Even if as a result, there are the dimensional accuracy of undertake part 13 and the unevenness of the thickness of substrate 11, deflection deformations etc.
In the case of, 11a above substrate 11 can also be made to be always maintained at appropriate height and position, Neng Goufang relative to clamping component 12
The printing quality only generated due to the relative altitude of substrate 11 and clamping component 12 is bad.
Industrial availability
The method for printing screen and silk-screen printing device of the present invention have can prevent it is opposite because of substrate and clamping component
The bad this effect of printing quality highly generated, applied to the printing cream such as paste soldering material or conductive paste on substrate
Field.
Claims (7)
1. a kind of method for printing screen overlaps the screen mask for being formed with pattern hole above substrate, via the pattern
Viscoid is printed on above the substrate by hole, which is characterized in that including：
Undertake part mobile process makes the undertake part below the undertaking substrate relatively be lifted relative to clamping component；
Substrate clamping process, the side on two sides for making at least one set of clamping component opposite with the substrate abut, and limit institute
State the position of the horizontal direction of the substrate in undertake part；
Height difference measurements process in the state of by substrate described in the clamping part clamps, measures the clamping component
Above with the substrate above difference of height；
Judgment step, according to height difference measurements process measurement as a result, judging above described substrate from the clamping section
Above part prominent overhang whether within the limits prescribed,
Substrate mask aligning process after the substrate and screen mask contraposition, makes the screen mask be overlapped or connect
Closely above the substrate；
Printing process, by making print head along being moved above the screen mask, as a result, via the pattern hole, by institute
Viscoid is stated to be printed on above the substrate,
In the judgment step in the case where the overhang is outside defined range, the undertake part is performed repeatedly
Mobile process, the height difference measurements process and the judgment step, until the overhang is in defined range, makes
The printing process is carried out in the state of being protruded upward above the clamping component above the substrate.
2. method for printing screen as described in claim 1, which is characterized in that
The overhang from the upper surface of the clamping component above the substrate is less than half of the thickness of the substrate.
3. method for printing screen as described in claim 1, which is characterized in that
The overhang from the upper surface of the clamping component above the substrate is 0.01mm~0.5mm.
4. a kind of silk-screen printing device overlaps the screen mask for being formed with pattern hole above substrate, via the pattern
Viscoid is printed on above the substrate, which is characterized in that have by hole：
Undertake part is accepted below the substrate；
Clamping unit makes at least one set of clamping component and the two opposite sides of the substrate accepted by the undertake part
Side abut, limit the position of the horizontal direction of the substrate in the undertake part；
Difference of height measuring unit in the state of by substrate described in the clamping part clamps, measures the clamping component
Above with the substrate above difference of height；
First lifting unit makes the undertake part relatively be lifted relative to the clamping component；
Bit cell carries out pair by the substrate that the undertake part is accepted and the horizontal direction of the screen mask
Position；
Second lifting unit, in order to be overlapped above the substrate for having carried out the contraposition screen mask or in order to
Them is made to be close to the distance that can carry out silk-screen printing, makes the substrate and the screen mask relatively close in the silk
After wire mark brush, in order to which the screen mask is made to make the substrate and the screen mask opposite from misplacing of stencil above the substrate
Ground detaches in above-below direction；
Print head, by along being moved above the screen mask, as a result, printing the viscoid via the pattern hole
Brush is above the substrate；
Control unit controls the action of the silk-screen printing device；
The control unit according to the difference of height measuring unit measure as a result, judging above described substrate from the clamping section
Above part prominent overhang whether within the limits prescribed, in the case where the overhang is outside defined range, instead
While relatively lifting relative to the clamping component into the enforcement undertake part again, pass through the difference of height measuring unit
It measures, whether within the limits prescribed to judge the overhang, until the overhang is in defined range, and control
First lifting unit, so as to be protruded upward above the clamping component above the substrate.
5. silk-screen printing device as claimed in claim 4, which is characterized in that
The control unit, which has, stores the thickness of the substrate and the overhang from the upper surface of the clamping component of the substrate
Storage part, thickness and the overhang based on the substrate control first lifting unit.
6. silk-screen printing device as claimed in claim 5, which is characterized in that
The overhang is less than half of the thickness of the substrate.
7. silk-screen printing device as claimed in claim 5, which is characterized in that
The overhang is 0.01mm~0.5mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-235314 | 2012-10-25 | ||
| JP2012235314A JP2014083787A (en) | 2012-10-25 | 2012-10-25 | Screen printing method and screen printing apparatus |
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| CN103770448A CN103770448A (en) | 2014-05-07 |
| CN103770448B true CN103770448B (en) | 2018-06-22 |
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| WO2015033402A1 (en) * | 2013-09-04 | 2015-03-12 | 富士機械製造株式会社 | Screen printer |
| CN104325778B (en) * | 2014-09-24 | 2016-10-05 | 深圳市华星光电技术有限公司 | Screen printer and printing process thereof |
| WO2017022109A1 (en) * | 2015-08-05 | 2017-02-09 | 富士機械製造株式会社 | Solder printing machine |
| CN106494072A (en) * | 2016-10-21 | 2017-03-15 | 温州中科包装机械有限公司 | Silk screen gluing non-stick web mechanism |
| CN106946068B (en) * | 2017-03-09 | 2018-07-06 | 长泰朗德机械设备有限公司 | A kind of screen printer of automatic placement stock |
| DE112019003351T5 (en) * | 2018-07-04 | 2021-04-01 | Panasonic Intellectual Property Management Co., Ltd. | STENCIL PRINTING DEVICE AND STENCIL PRINTING METHOD |
| JP7196627B2 (en) | 2019-01-21 | 2022-12-27 | 株式会社デンソー | vehicle controller |
| CN113666078B (en) * | 2021-08-20 | 2023-04-11 | 福建屹立智能化科技有限公司 | Plate conveying device applied to printing mechanism |
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| KR101160174B1 (en) * | 2004-05-17 | 2012-06-26 | 파나소닉 주식회사 | Screen printing apparatus and screen printing method |
| JP4696861B2 (en) * | 2005-11-11 | 2011-06-08 | パナソニック株式会社 | Screen printing device |
| JP2007320207A (en) * | 2006-06-01 | 2007-12-13 | Yamaha Motor Co Ltd | Screen printing method and screen printing apparatus |
| JP5476139B2 (en) * | 2010-01-22 | 2014-04-23 | ヤマハ発動機株式会社 | Printing apparatus and printing method |
| JP5488272B2 (en) * | 2010-07-08 | 2014-05-14 | パナソニック株式会社 | Screen printer and method for detecting foreign matter in screen printer |
| JP4873093B2 (en) * | 2010-07-30 | 2012-02-08 | ソニー株式会社 | Screen printing device |
| JP5494513B2 (en) * | 2011-02-02 | 2014-05-14 | パナソニック株式会社 | Screen printing apparatus and screen printing method |
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