CN103770448A - Silk-screen printing device and method for setting substrate clamping position - Google Patents
Silk-screen printing device and method for setting substrate clamping position Download PDFInfo
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- CN103770448A CN103770448A CN201310503048.XA CN201310503048A CN103770448A CN 103770448 A CN103770448 A CN 103770448A CN 201310503048 A CN201310503048 A CN 201310503048A CN 103770448 A CN103770448 A CN 103770448A
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Abstract
The invention provides a silk-screen printing method and a silk-screen printing device, and solves a problem of poor printer quality caused by a relative height between a substrate and a clamp piece. As at least one group of clamping parts (12) are abutted against surfaces of two opposite sides of a substrate (11) carried by a carrier part (13) to limit the horizontal position of the substrate (11) on the carrier part (13), a first elevating unit enabling the carrier part (13) to elevate relative to the clamping parts (12) is controlled to enable an upper surface (11a) of the substrate (11) to protrude upwardly from upper surfaces (12a) of the clamping parts (12). Thus, the clamping parts (12) and the substrate (11) can be arranged at proper positions, and the problem of poor printer quality caused by the relative height between the substrate (11) and the clamping parts (12) is overcome.
Description
Technical field
The present invention relates to the viscoiies such as paste soldering material to be printed in method for printing screen and the silk-screen printing device of substrate.
Background technology
At present, the joint method when electronic component is mounted on to substrate uses soldered joint mostly.In the method, before soldered joint, supplying with soldered joint material to the electrode of substrate is the viscoiies such as paste soldering material.As the supply method of this viscoid, be widely used the serigraphy that via the pattern hole that is arranged at screen mask, viscoid is printed in to substrate.In serigraphy action, sandwich printing object substrate fixed position by clamping part from horizontal direction, and by accepting parts from the state of side bearing substrate below, make butt (for example,, with reference to patent documentation 1) below itself and screen mask.
Patent documentation 1: TOHKEMY 2004-322479 communique
In order to obtain high-quality print result in serigraphy, in the brushing that squeegee is slided in screen mask, need to make the printing surface of substrate be sealed at accurately screen mask.In order to ensure this high-precision adaptation, require setting substrate suitably above and the relative position relation of the short transverse above of the clamping part of this substrate of clamping.But, comprise above-mentioned patent documentation example in interior prior art, not necessarily clear and definite for guaranteeing the clamping part of printing quality and the suitable relative position relation of substrate.In addition, owing to also there is the distortion such as inequality and deflection of thickness on printing object substrate, therefore, even by accept parts from below correctly supporting state, above substrate, also may not remain on suitable height and position, guarantee well in printing quality, to have problem.
Summary of the invention
So, the object of the invention is to, provide and can prevent bad method for printing screen and the silk-screen printing device of printing quality that produce because of the relative altitude of substrate and clamping part.
Method for printing screen of the present invention by the screen mask that is formed with pattern hole overlap substrate above, via described pattern hole, by viscoid be printed on described substrate above, wherein, carry out successively following operation: substrate clamps operation, by accepting described in parts carry below substrate, and make the side butt at least one group of clamping part and two relative limits of this substrate, the position of accepting the horizontal direction of the described substrate on parts described in restriction; Substrate mask aligning operation, after described substrate and described screen mask contraposition, makes described screen mask overlapping or approach on described substrate; Printing process, by making print head mobile above described screen mask, thus, via described pattern hole, by described viscoid be printed on described substrate above, on make described substrate, above described clamping part, outstanding state, carry out described printing process upward.
Silk-screen printing device of the present invention by the screen mask that is formed with pattern hole overlap substrate above, via described pattern hole, by viscoid be printed on described substrate above, wherein, possess: accept parts, it is accepted below described substrate; Clamping unit, it makes at least one group of clamping part and side butt by described two relative limits of accepting the described substrate that parts accept, the position of accepting the horizontal direction of this substrate on parts described in restriction; The first lifting unit, it accepts parts with respect to the relatively lifting of described clamping part described in making; Bit cell, it carries out the contraposition by the described horizontal direction of accepting described substrate that parts accept and described screen mask; The second lifting unit, it is for overlapping described screen mask on carried out the described substrate of described contraposition or in order to make them be close to the distance that can carry out serigraphy, described substrate and described screen mask are relatively approached, after described serigraphy, in order to make described screen mask misplacing of stencil above described substrate, described substrate is relatively separated at above-below direction with described screen mask; Print head, its by along described screen mask above movement, thus, via described pattern hole by described viscoid be printed on described substrate above; Control part, it controls the action of described silk-screen printing device; The first lifting unit described in described control part control, so that described substrate is outstanding upward above described clamping part above.
In addition, method for printing screen of the present invention by the screen mask that is formed with pattern hole overlap substrate above, via described pattern hole, by viscoid be printed on described substrate above, wherein, carry out successively following operation: substrate is carried operation, by supporting the ribbon conveyer below two relative limits of described substrate, substrate is transported to the position of regulation; Substrate clamps operation, by accepting described in parts carry below substrate, from described ribbon conveyer, this substrate is lifted, and make the side butt at least one group of clamping part and two relative limits of described substrate, the position of accepting the horizontal direction of the described substrate on parts described in restriction; Substrate mask aligning operation, after described substrate and described screen mask contraposition, makes described screen mask overlapping or approach on described substrate; Printing process, by making print head mobile above described screen mask, thus, via described pattern hole, by described viscoid be printed on described substrate above, on make described substrate, above described clamping part, outstanding state, carry out described printing process upward.
Silk-screen printing device of the present invention by the screen mask that is formed with pattern hole overlap substrate above, via described pattern hole, by viscoid be printed on described substrate above, wherein, possess: substrate supply unit, it supports by a pair of ribbon conveyer below two relative limits of described substrate, and this substrate is transported to the position of regulation; Accept parts, it is accepted below the described substrate of the position that is transported to described regulation; The first lifting unit, it accepts parts with respect to the relatively lifting of described ribbon conveyer described in making, and described substrate is lifted from described ribbon conveyer; Clamping unit, it makes the side butt at least one group of clamping part and two relative limits of the described substrate being lifted by described the first lifting unit from described ribbon conveyer, the position of accepting the horizontal direction of the described substrate on parts described in restriction; Bit cell, it carries out the contraposition by the described horizontal direction of accepting described substrate that parts accept and described screen mask; The second lifting unit, it is for overlapping described screen mask on carried out the described substrate of described contraposition or in order to make them be close to the distance that can carry out serigraphy, described substrate and described screen mask are relatively approached, after described serigraphy, in order to make described screen mask misplacing of stencil above described substrate, described substrate is relatively separated at above-below direction with described screen mask; Print head, its by along described screen mask above movement, thus, via described pattern hole by described viscoid be printed on described substrate above; Control part, it controls the action of described silk-screen printing device; The first lifting unit described in described control part control, so that described substrate is outstanding upward above described clamping part above.
According to the present invention, make at least one group of clamping part and the side butt on two relative limits by accepting the substrate that parts accept by control,, make to accept first lifting unit of parts with respect to the relatively lifting of described clamping part, so that the urgent parts above of substrate is outstanding upward above when this substrate on parts is accepted in restriction the position of horizontal direction.Thus, clamping part and substrate can be made as to suitable relative position, can prevent that the printing quality producing because of the relative altitude of substrate and clamping part is bad.
Accompanying drawing explanation
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) and (b) are action specification figure of the silk-screen printing device of an embodiment of the present invention;
Fig. 4 (a) and (b) are action specification figure of the silk-screen printing device of an embodiment of the present invention;
Fig. 5 (a) and (b) are key diagrams of the brushing action of the silk-screen printing device of an embodiment of the present invention;
Fig. 6 (a) and (b) are the substrate of method for printing screen of an embodiment of the present invention and the key diagram that the difference of height of clamping part is measured;
Fig. 7 is the substrate of method for printing screen of an embodiment of the present invention and the key diagram of the measurement result that the difference of height of clamping part is measured;
Fig. 8 is the piece figure that represents the formation of the control system of the silk-screen printing device of an embodiment of the present invention;
Fig. 9 is that the clamped position that represents the silk-screen printing device of an embodiment of the present invention is set the flow chart of processing;
Figure 10 is the flow chart that represents the clamped position correcting process of the silk-screen printing device of an embodiment of the present invention.
Symbol description
1 silk-screen printing device
2 substrate orientation portions
3 contraposition mechanisms
4 substrate maintaining parts
10 conveyings
11 substrates
Above 11a
12 clamping parts
Above 12a
13 accept parts
14 screen mask
16 mask plates
17 print heads
19 squeegees
20 intermediate modules
20a substrate identification video camera
20b mask identification video camera
20c range finder
Ci, Pi measurement point
Dh, Dih difference of height
The specific embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.First, describe with reference to the unitary construction of Fig. 1,2 pairs of silk-screen printing devices 1.Silk-screen printing device 1 has following function,, by the screen mask that is formed with pattern hole is overlapped substrate above, and squeegee is slided have the screen mask of the viscoiies such as solder paste in supply above, via pattern hole by viscoid be printed on substrate above.
In Fig. 1, silk-screen printing device 1 for being equipped with forming of the serigraphy mechanism that is made up of screen mask 14 and print head 17 above substrate orientation portion 2.Substrate orientation portion 2 is to be provided with and to clamp the mode of the substrate maintaining part 4 that keeps printing object substrate 11 and form on the top of contraposition mechanism 3 of formation that is laminated with Y-axis workbench 3Y, X-axis workbench 3X, θ axle workbench 3 θ.On θ axle workbench 3 θ, be combined with movable plate 3a, on movable plate 3a, be equipped with substrate elevating mechanism 5.
On the second lifter plate 5a, erect two longitudinal framings 9 along directions X, in the upper end of each longitudinal framing 9, be set side by side with conveying 10 along directions X (substrate throughput direction).As shown in Figure 2, be provided with ribbon conveyer 10a(also with reference to Fig. 5 in the inner side of each conveying 10).Under relative two limits (both ends of the Y-direction) state by this pair of ribbon conveyer 10a supporting substrates 11, by ribbon conveyer 10a being carried out to horizontal drive by transport driving (omitting diagram), substrate 11 is transported to the position of regulation.
On the first lifter plate 6a, be equipped with the block-shaped parts 13 of accepting, be transported to 11b below the substrate 11 of assigned position and accept (with reference to Fig. 3) by the parts 13 of accepting that together rise with the first lifter plate 6a.Conveying 10, ribbon conveyer 10a and transport driving, by below two relative limits of a pair of ribbon conveyer 10a supporting substrates 11, are configured for the substrate supply unit of carrying to assigned position of serigraphy.
On each conveying 10, be equipped with the clamping part 12 of elongated shape along directions X, the clamping part 12 of the side in this group clamping part 12 is by clamping part driving mechanism 12b in Y-direction move toward one another freely.As shown in Figure 2, by making respectively clamping part 12 drive clamping part driving mechanism 12b with the side butt on two the relative limits by accepting the substrate 11 that parts 13 undertake, substrate 11 is clamped by clamping part 12, and the horizontal level of the substrate 11 on parts 13 is accepted in restriction.
In addition, clamped the example of substrate 11 by one group of clamping part 12 in this expression, but also can clamp substrate 11 by organizing clamping part 12 in multiple positions of directions X more, clamping part 12 and clamping part driving mechanism 12b become the clamping unit that clamps action, described clamping action makes at least one group of clamping part 12 butts, and the position of the horizontal direction of the substrate 11 on parts 13 is accepted in restriction.
In the above-described configuration, by driving substrate to accept elevating mechanism 6, can make to accept parts 13 with respect to clamping part 12 and relatively lifting.Thus, can make substrate 11 be arranged in to be illustrated in clamping substrate 11 clamped position that should be positioned at and relative altitude position clamping part 12 of substrate 11.Therefore, substrate is accepted elevating mechanism 6 becomes in order to make substrate 11 be positioned at clamped position and makes to accept first lifting unit of parts 13 with respect to clamping part 12 relative liftings.
And aforesaid clamping unit makes at least one group of clamping part 12 carry out aforesaid clamping action with the side butt on two relative limits of the substrate 11 lifting from ribbon conveyer 10a by this first lifting unit.In addition, the first above-mentioned lifting unit, by making to accept parts 13 with respect to relatively lifting of ribbon conveyer 10a, lifts substrate 11 from ribbon conveyer 10a.
Below screen mask 14, be equipped with substrate identification video camera 20a, mask identification video camera 20b, the range finder 20c intermediate module 20 forming that becomes one, described intermediate module 20 passes through intermediate module driving mechanism 22(with reference to Fig. 7), in the space between substrate maintaining part 4 and screen mask 14, can move horizontally.By making intermediate module 20 between mask plate 16 and substrate 11, substrate identification video camera 20a, mask identification video camera 20b take respectively substrate 11 above, below mask plate 16.By this shooting results is carried out to identifying processing, detect the position of substrate 11 and mask plate 16.In addition, range finder 20c has the function of measuring non-contactly the height and position of the object that is positioned at the belows such as laser displacement gauge, arranges to measure ventricumbent mode.
In the present embodiment, the 12a above of the 11a above of substrate 11 and clamping part 12 is measuring objects, the result of highly measuring based on these, the substrate 11 of measurement when accepting parts 13 and accept substrate 11 and the difference of height of clamping part 12.; range finder 20c is being limited by aforesaid clamping unit under the state of position of substrate 11; to until the height distance of 12a above of the 11a above of substrate 11 and clamping part 12 is measured, bring into play function as near the difference of height measuring unit that the difference of height of 11a is measured of the substrate 11 12a above and this clamping part 12 to clamping part 12 above.
And, in the present embodiment, range finder 20c becomes and takes the substrate identification marking 11c(of substrate 11 with reference to Fig. 6) substrate identification video camera 20a and the mask identification video camera 20b that takes the identification marking (omitting diagram) of screen mask 14 be together installed on the form of intermediate module 20, described intermediate module 20 is by intermediate module driving mechanism 22(Fig. 7) by accept substrate 11 that parts 13 accept above move horizontally.
Like this, by accepting parts 13 are accepted and clamped by clamping part 12 substrate 11 with respect to mask plate 16 contraposition in the horizontal direction.This contraposition drives contraposition mechanism 3 to carry out by the position probing result based on substrate 11 and mask plate 16.Therefore, contraposition mechanism 3 becomes the bit cell of contraposition of horizontal direction of carrying out by accepting substrate 11 that parts 13 accept and screen mask 14.
And, in the time of serigraphy, for overlapping mask plate 16 on carried out the substrate 11 of contraposition, or be the contactless printing that does not make to contact with mask plate 16 above substrate 11 in printing form, in order to make them be close to the distance that can carry out serigraphy, substrate 11 and clamping part 12 are relatively approached.And, after serigraphy, in order to make screen mask 14 misplacing of stencil above substrate 11, substrate 11 is relatively separated on above-below direction with screen mask 14.These lifting actions by drive substrate elevating mechanism 5 make conveying 10 and the second lifter plate 5a, longitudinal framing 9 together lifting carry out.
Therefore, substrate elevating mechanism 5 becomes for overlapping screen mask 14 on carried out the substrate 11 of contraposition, or, in order to make them be close to the distance that can carry out serigraphy, substrate 11 and screen mask 14 are relatively approached, after serigraphy, in order to make screen mask 14 misplacing of stencil above substrate 11, the second lifting unit that substrate 11 is relatively separated with screen mask 14 on above-below direction.
Then, with reference to Fig. 3, Fig. 4, the operation operation step of the method for printing screen to silk-screen printing device 1 describes.First,, as shown in Fig. 3 (a), by the ribbon conveyer 10a of conveying 10, substrate 11 is transported to the assigned position (substrate conveying operation) of the top of accepting parts 13.This conveying action is carried out (with reference to Fig. 2) below two the relative limits by ribbon conveyer 10a supporting substrates 11.
Next, as shown in Figure 3 (b), by accepting 11b below parts 13 supporting substrates 11, lift substrate 11 from ribbon conveyer 10a, and make the side butt on one group of clamping part 12 and two relative limits of substrate 11, the position (substrate clamping operation) of the horizontal direction of the substrate 11 on parts 13 is accepted in restriction.That is, drive substrate to accept elevating mechanism 6(arrow b), make the clamped position of accepting parts 13 and rise to regulation on the first lifter plate 6a, then make to accept parts 13 with respect to clamping part 12 and relatively lifting.Thus, with substrate 11 below 11b butt and lift substrate 11, next, drive clamping part driving mechanism 12b, make clamping part 12 move toward one another, substrate 11 is clamped to clamping.
At this moment, so that giving prominence to the mode of overhang (difference of height Dh) upward, the 11a above of substrate 11 12a above clamping part 12 presets clamped position.Thus, as shown in Fig. 5 (a), substrate 11 is lifted from ribbon conveyer 10a by accepting parts 13, and the state of having given prominence to upward difference of height Dh from 12a above with 11a above it is clamped.
After this, as shown in Figure 4 (a), (arrow c) to make intermediate module 20 debouch space between substrate maintaining part 4 and screen mask 14, identify respectively substrate 11, mask plate 16 by substrate identification video camera 20a, mask identification video camera 20b, and detection position (substrate identification operation and mask identification operation), and measured the difference of height (difference of height measurement operation) of substrate 11 and clamping part 12 by range finder 20c.Then, drive contraposition mechanism 3 by the position probing result based on substrate 11, mask plate 16, by the substrate 11 that is held in substrate maintaining part 4 with respect to mask plate 16 contraposition in the horizontal direction.
At this, with reference to Fig. 6, the difference of height of range finder 20c is detected and described.Fig. 6 (a) represents the setting example near the measurement point that the difference of height of 11a is measured of the substrate 11 12a above and this clamping part 12 to the clamping part 12 that becomes detected object above.On a pair of clamping part 12 12a and with near of the butt line of substrate 11, be set with respectively measurement point C1～C5 and measurement point C6～C10 with constant space row shape.In addition, on substrate 11 11a and with near of the butt line of clamping part 12, corresponding to measurement point C1～C5 and measurement point C6～C10 and be set with respectively measurement point P1～P5 and measurement point P6～P10.
Measure in operation at difference of height, as shown in Figure 6 (b), first, range finder 20c is moved on clamping part 12, carry out the height of measurement point Ci and measure.That is, from range finder 20c, measurement point Ci is irradiated and measures light L1, by accepting its reverberation L2, measure the height dimension HCi from the reference position of range finder 20c to measurement point Ci.Next, range finder 20c is moved in clamping part 12 on the measurement point Pi corresponding to measurement point Ci, carry out equally the height of measurement point Pi and measure, measure the height dimension HPi from the reference position of range finder 20c to measurement point Pi.Then, poor by computing height dimension HCi and height dimension HPi, obtains difference of height Dih.
Fig. 7 represents the example of the measurement result of above-mentioned difference of height measurement.In Fig. 7, difference of height Dih(i=1～10 shown in transverse axis) represent the combination of measurement point Ci and corresponding measurement point Pi, the longitudinal axis represents difference of height Dh, that is, and the overhang of 12a above clamping part 12 of the 11a above of substrate 11.In the present embodiment, the mode that becomes the scope (0.05mm～0.15mm) of pre-regulation with the difference of height Dmh of the value that represents minimum in these multiple difference of height Dh values is set clamped position.
Then, by substrate 11 be formed with after mask plate 16 contrapositions of pattern hole 16a, as shown in Figure 4 (b), overlapping mask plate 16(substrate mask aligning operation on substrate 11),, at this, by driving substrate elevating mechanism 5 to make the second lifter plate 5a increase, (arrow d), rises overally the substrate maintaining part 4 that maintains substrate 11.In addition, the in the situation that of contactless printing, make substrate 11 and mask plate 16 be close to predetermined distance, to replace overlapping mask plate 16 on substrate 11.
After this, in print head 17, drive squeegee elevating mechanism 18, make squeegee 19 decline (arrow e), and with the butt above of mask plate 16.Then, make print head 17 have the upper of mask plate 16 of solder paste 21 to move towards brushing direction pre-supply.Thus, as shown in Fig. 5 (b), slide on mask plate 16 when squeegee 19 sweeps solder paste 21 (arrow f), prints solder paste 21(printing process via pattern hole 16a on substrate 11).
This printing process on make 11a above above clamping part 12 12a the state of outstanding aforesaid overhang (difference of height Dh), carry out upward.In addition, the overhang of 12a above clamping part 12 of 11a above of substrate 11 is set as below the half of thickness t of this substrate 11.And as concrete number range, overhang (difference of height Dh) is set as the scope of 0.01mm～0.5mm.
Then, with reference to Fig. 8, the formation of control system is described.Control part 25 has cpu function, by exercises, handling procedure, various data based on being stored in storage part 29, each portion of following explanation is carried out to Comprehensive Control, carries out serigraphy operation action and the various control processing of silk-screen printing device 1.At storage part 29, except storing above-mentioned exercises, handling procedure, various data, also store the substrate 11 that represents while clamping substrate 11 by clamping part 12 with respect to the upper limit of the overhang of clamping part 12 and the overhang higher limit 29a of lower limit, overhang lower limit 29b, represent the substrate thickness data 29c of the thickness of the substrate 11 that becomes object.
In addition, control part 25 possesses image identification function, by the shooting results of substrate identification video camera 20a, mask identification video camera 20b is carried out to identifying processing, carry out the substrate identification marking 11c(of substrate 11 with reference to Fig. 6) and the location recognition of the mask identification marking of mask plate 16.In addition, control part 25 is by controlling intermediate module driving mechanism 22, while carrying out the shooting of substrate identification video camera 20a, mask identification video camera 20b and the Position Control of the intermediate module 20 measured of the difference of height of range finder 20c.
In serigraphy operation action, overhang higher limit 29a, overhang lower limit 29b, the substrate thickness data 29c of control part 25 based on being stored in storage part 29, controlling the first lifting unit is that substrate is accepted elevating mechanism 6, so that the 11a above of substrate 11 12a above clamping part 12 is outstanding upward.; control part 25 possesses the storage part 29 that the overhang of 12a is stored above clamping part 12 to the thickness of substrate 11 and this substrate 11; and thickness and overhang higher limit 29a, overhang lower limit 29b based on substrate 11, control the first lifting unit.
In addition, control part 25 possesses difference of height measurement handling part 26, clamped position is set handling part 27, clamped position correcting process portion 28 as inter-process function.Difference of height is measured the height measurement results of handling part 26 based on range finder 20c, obtains the processing of the difference of height of 12a above of 11a above and the clamping part 12 of substrate 11.Clamped position is set handling part 27 and is set the processing of clamped position, that is, in the clamping of substrate 11, setting substrate 11 that should be positioned at relative altitude position clamping part 12.This processing in each replacing of the substrate kind that becomes printing object of silk-screen printing device 1, start to produce front execution.In addition, the processing of clamped position, producing in way, in the case of necessary, is revised by clamped position correcting process portion 28.That is, control part 25 is the measurement result of range finder 20c based on difference of height measuring unit, revises the clamped position correcting process of clamped position.
Then, according to the flow chart of Fig. 9 and with reference to each figure, the clamped position setting of being carried out by clamped position setting handling part 27 is processed and described.As above-mentioned, clamped position refers to the term of the relative position relation of the substrate 11 of state after regulation substrate 11 is fixedly clamped by clamping part 12 and the short transverse of clamping part 12, therefore, as in the present embodiment, being kept, in the forming of height and position, accepting the height and position regulation clamped position of parts 13 by the accepting that parts 13 are accepted substrate 11 of lifting.In addition, the formation of the relative position relation of the short transverse of regulation substrate 11 and clamping part 12 if clamping part 12 carries out lifting, the height and position of clamping part 12 regulation clamped position.
In Fig. 9, first, set the initial value (ST1) of clamped position A.At this, the A0 as provisional value is inputted as initial value.After this, as shown in Fig. 3 (a), substrate 11 is moved into silk-screen printing device 1(ST2), and be transported to the assigned position of the top of accepting parts 13.Next, make to accept parts 13 and rise, accept 11b(ST3 below substrate 11) (substrate is accepted operation).
; as shown in Figure 3 (b); move to clamped position A in order to make to accept parts 13;; in order to make substrate 11 be positioned at the clamped position A0 as the tentative hypothesis of setting of initial value; drive substrate to accept elevating mechanism 6, what make to accept substrate 11 accepts parts 13 with respect to clamping part 12 and relatively lifting (accepting parts mobile process).Next, carry out and clamp (ST4), drive clamping part driving mechanism 12b, make clamping part 12 and the side butt on two relative limits of substrate 11 that is positioned at clamped position, the substrate 11 of accepting on parts 13 is clamped to (substrate clamping operation).
Then,, under this state, carry out difference of height and measure processing (ST5) (difference of height measurement operation).; as shown in Figure 4 (a); intermediate module 20 is moved to the top of substrate maintaining part 4, and as described at Fig. 6, above near the substrate 11 above the clamping part 12 of the state after multiple positions are to clamping substrate 11 12a and this clamping part 12, the difference of height of 11a is measured.
Then, judge the represented difference of height size of measurement result obtaining by measuring by difference of height,, whether the outstanding overhang of 11a 12a from clamping part 12 above above of substrate 11 is in the scope being stipulated by overhang higher limit 29a, overhang lower limit 29b (ST6).At this, if obtained overhang within the limits prescribed, the clamped position A in this stage is set as to final clamped position Af(clamped position and sets operation).
On the other hand, in (ST6), be judged as overhang in the extraneous situation of regulation, the processing of repeated multiple times execution repetition test, when described repetition test is treated to gradually the clamped position A that upgrades hypothesis, carry out successively shown in (ST3) accept parts mobile process and (ST5) shown in difference of height measure operation., first, the A+b that adds the increment b gained presetting take the clamped position A in this stage is new clamped position A(ST7).Next, remove the clamping (ST8) of clamping part 12, then turn back to (ST3), carry out until processing (ST6).
These are processed and repeatedly carry out until be judged as the overhang that obtained by (ST6) within the limits prescribed, and the clamped position A in this moment is set as final clamped position Af.; repeatedly carrying out in the process of aforesaid repetition test processing; the clamped position that the difference of height (with reference to Fig. 6) that is multiple positions by the measurement result of having confirmed difference of height measuring unit is included in the hypothesis of the repetition test processing in prescribed limit is set as final clamped position (clamped position setting operation); thus, clamped position setting processing finishes.
Then, describe carrying out in printing treatment the clamped position correcting process of being carried out by clamped position correcting process portion 28 in way according to the flow chart of Figure 10 and with reference to each figure.In Figure 10, first, as shown in Fig. 3 (a), substrate 11 is moved into silk-screen printing device 1(ST11), and be transported to the assigned position of the top of accepting parts 13.Then, make to accept parts 13 and rise, accept 11b(ST12 below substrate 11) (substrate is accepted operation).That is, as shown in Figure 3 (b), in order to make substrate 11 be positioned at clamped position A, drive substrate to accept elevating mechanism 6, what make to undertake substrate 11 accepts parts 13 with respect to clamping part 12 and relatively lifting (accepting parts mobile process).Next, carry out and clamp (ST13), drive clamping part driving mechanism 12b, make clamping part 12 and the side butt on two relative limits of substrate 11 that is positioned at clamped position, the substrate 11 of accepting on parts 13 is clamped to (substrate clamping operation).
Then,, in this stage, judgement has the correcting process (ST14) that there is no need to carry out clamped position.; in the process of execution printing treatment; in the case of specific condition for example in the time having carried out batch the changing of object substrate, accumulation print pass while reaching stated number, the continuous operation duration condition presetting while reaching the stipulated time etc.; be judged as the execution of the correcting process that needs clamped position, then carry out (ST15)～(ST20) operation of being surrounded by dotted line frame.
In this correcting process, first, same with (ST5) shown in Fig. 9, above near the substrate 11 above the clamping part 12 of the state by range finder 20c after clamping substrate 11 is measured at multiple positions 12a and this clamping part 12, the difference of height (difference of height measurement operation) of 11a (ST15).Next, same with (ST6) shown in Fig. 9, judge by measuring overhang that the measurement result that obtains represents by difference of height whether in the scope by overhang higher limit 29a, overhang lower limit 29b regulation (ST16).At this, in the extraneous situation of regulation, carry out the correction (ST17) (clamped position correction operation) of clamped position in obtained overhang.In this clamped position correction operation, revise the processing of clamped position so that in (ST15), become 11a above the substrate 11 at multiple positions of difference of height measuring object be clamping part 12 above more than 12a height.
Then, after this clamped position correction operation, based on revised clamped position, accept parts mobile process, thereafter, again carry out difference of height and measure operation and clamped position correction operation.That is, first, remove the clamping (ST18) of substrate 11, based on revised clamped position, carry out and make the component height of accepting of accepting parts 13 liftings regulate (ST19), under this state, again clamp substrate 11(ST20).After this, turn back to (ST15), repeatedly carry out same processing, if be judged as overhang that the measurement result that obtained by (ST16) represents within the limits prescribed, completed the correcting process of clamped position, turn back to common printing treatment operation.
; as utilize Fig. 4 (b) illustrated; based on the result by after substrate identification video camera 20a, mask identification video camera 20b identification substrate 11, mask plate 16; carry out the substrate mask aligning operation (ST21) of overlapping mask plate 16 on substrate 11; then, as utilize Fig. 5 (b) illustrated, carry out printing process (ST22);, squeegee 19 slides when sweeping solder paste 21 on mask plate 16, on substrate 11, prints solder paste 21 via pattern hole 16a.
After this, be that substrate elevating mechanism 5 declines substrate maintaining part 4 by driving the second lifting unit, make substrate 11 leave the misplacing of stencil operation (ST23) below mask plate 16.Then, remove the clamping of the clamping part 12 of substrate 11, then make to accept parts 13 and decline, remove the state of accepting (ST24) of substrate 11.Thus, printing treatment finishes, the substrate 11 being completed for printing by conveying 10 downstream side take out of.
Bright as noted earlier, in the serigraphy shown in present embodiment, making at least one group of clamping part 12 with by accepting the side butt on two relative limits of the substrate 11 that parts 13 accept and when the position of the horizontal direction of the substrate 11 that limits to accept on parts 13, control makes to accept first lifting unit of parts 13 with respect to relatively lifting of clamping part 12, so that the 11a above of substrate 11 12a above clamping part 12 is outstanding upward.
In addition, based under the state of position that has been limited substrate 11 by clamping unit, measure near the substrate 11 12a and this clamping part 12 above clamping part 12 above the measurement result of difference of height of 12a, carry out clamped position and set processing or clamped position correcting process, described clamped position is set to process and is set substrate 11 clamped position that should be positioned at and relative altitude position clamping part 12 in the clamping that is illustrated in substrate 11, the clamped position that the correction of described clamped position correcting process sets.
Thus, even inequality, the deflection deformation etc. of accepting the dimensional accuracy of parts 13 and the thickness of substrate 11 in existence, also can make the 11a above of substrate 11 often remain on suitable height and position with respect to clamping part 12, can prevent that the printing quality producing because of the relative altitude of substrate 11 and clamping part 12 is bad.
Utilizability in industry
Method for printing screen of the present invention and silk-screen printing device have can prevent the bad this effect of the printing quality producing because of the relative altitude of substrate and clamping part, is applied to the field of printing the cream such as paste soldering material or conductive paste on substrate.
Claims (16)
1. a method for printing screen, by the screen mask that is formed with pattern hole overlap substrate above, via described pattern hole, by viscoid be printed on described substrate above, it is characterized in that, carry out successively following operation:
Substrate clamps operation, by accepting described in parts carry below substrate, and makes the side butt at least one group of clamping part and two relative limits of this substrate, the position of accepting the horizontal direction of the described substrate on parts described in restriction;
Substrate mask aligning operation, after described substrate and described screen mask contraposition, makes described screen mask overlapping or approach on described substrate;
Printing process, by making print head mobile above described screen mask, thus, via described pattern hole, by described viscoid be printed on described substrate above,
On make described substrate, above described clamping part, outstanding state, carry out described printing process upward.
2. method for printing screen as claimed in claim 1, is characterized in that,
Clamp in operation at described substrate, described in making, accept parts with respect to the relatively lifting of described clamping part, thus, make the outstanding upward above described clamping part of described substrate above.
3. method for printing screen as claimed in claim 1 or 2, is characterized in that,
Below the half of the thickness that the overhang above described clamping part above of described substrate is this substrate.
4. method for printing screen as claimed in claim 1 or 2, is characterized in that,
The overhang above described clamping part above of described substrate is 0.01mm～0.5mm.
5. a silk-screen printing device, by the screen mask that is formed with pattern hole overlap substrate above, via described pattern hole, by viscoid be printed on described substrate above, it is characterized in that possessing:
Accept parts, it is accepted below described substrate;
Clamping unit, it makes at least one group of clamping part and side butt by described two relative limits of accepting the described substrate that parts accept, the position of accepting the horizontal direction of this substrate on parts described in restriction;
The first lifting unit, it accepts parts with respect to the relatively lifting of described clamping part described in making;
Bit cell, it carries out the contraposition by the described horizontal direction of accepting described substrate that parts accept and described screen mask;
The second lifting unit, it is for overlapping described screen mask on carried out the described substrate of described contraposition or in order to make them be close to the distance that can carry out serigraphy, described substrate and described screen mask are relatively approached, after described serigraphy, in order to make described screen mask misplacing of stencil above described substrate, described substrate is relatively separated at above-below direction with described screen mask;
Print head, its by along described screen mask above movement, thus, via described pattern hole by described viscoid be printed on described substrate above;
Control part, it controls the action of described silk-screen printing device;
The first lifting unit described in described control part control, so that described substrate is outstanding upward above described clamping part above.
6. silk-screen printing device as claimed in claim 5, is characterized in that,
Described control part has the storage part of the storage thickness of described substrate and the overhang above described clamping part of this substrate, the first lifting unit described in the thickness based on described substrate and described overhang control.
7. silk-screen printing device as claimed in claim 6, is characterized in that,
Described overhang is below the half of thickness of this substrate.
8. silk-screen printing device as claimed in claim 6, is characterized in that,
Described overhang is 0.01mm～0.5mm.
9. a method for printing screen, by the screen mask that is formed with pattern hole overlap substrate above, via described pattern hole, by viscoid be printed on described substrate above, it is characterized in that, carry out successively following operation:
Substrate is carried operation, by supporting the ribbon conveyer below two relative limits of described substrate, substrate is transported to the position of regulation;
Substrate clamps operation, by accepting described in parts carry below substrate, from described ribbon conveyer, this substrate is lifted, and make the side butt at least one group of clamping part and two relative limits of described substrate, the position of accepting the horizontal direction of the described substrate on parts described in restriction;
Substrate mask aligning operation, after described substrate and described screen mask contraposition, makes described screen mask overlapping or approach on described substrate;
Printing process, by making print head mobile above described screen mask, thus, via described pattern hole, by described viscoid be printed on described substrate above,
On make described substrate, above described clamping part, outstanding state, carry out described printing process upward.
10. method for printing screen as claimed in claim 9, is characterized in that,
Clamp in operation at described substrate, described in making, accept parts with respect to the relatively lifting of described clamping part, thus, make the outstanding upward above described clamping part of described substrate above.
11. method for printing screen as described in claim 9 or 10, is characterized in that,
Below the half of the thickness that the overhang above described clamping part above of described substrate is this substrate.
12. method for printing screen as described in claim 9 or 10, is characterized in that,
The overhang above described clamping part above of described substrate is 0.01mm～0.5mm.
13. 1 kinds of silk-screen printing devices, by the screen mask that is formed with pattern hole overlap substrate above, via described pattern hole, by viscoid be printed on described substrate above, it is characterized in that possessing:
Substrate supply unit, it supports by a pair of ribbon conveyer below two relative limits of described substrate, and this substrate is transported to the position of regulation;
Accept parts, it is accepted below the described substrate of the position that is transported to described regulation;
The first lifting unit, it accepts parts with respect to the relatively lifting of described ribbon conveyer described in making, and described substrate is lifted from described ribbon conveyer;
Clamping unit, it makes the side butt at least one group of clamping part and two relative limits of the described substrate being lifted by described the first lifting unit from described ribbon conveyer, the position of accepting the horizontal direction of the described substrate on parts described in restriction;
Bit cell, it carries out the contraposition by the described horizontal direction of accepting described substrate that parts accept and described screen mask;
The second lifting unit, it is for overlapping described screen mask on carried out the described substrate of described contraposition or in order to make them be close to the distance that can carry out serigraphy, described substrate and described screen mask are relatively approached, after described serigraphy, in order to make described screen mask misplacing of stencil above described substrate, described substrate is relatively separated at above-below direction with described screen mask;
Print head, its by along described screen mask above movement, thus, via described pattern hole by described viscoid be printed on described substrate above;
Control part, it controls the action of described silk-screen printing device;
The first lifting unit described in described control part control, so that described substrate is outstanding upward above described clamping part above.
14. silk-screen printing devices as claimed in claim 13, is characterized in that,
Described control part has the storage part of the storage thickness of described substrate and the overhang above described clamping part of described substrate, the first lifting unit described in the thickness based on described substrate and described overhang control.
15. silk-screen printing devices as claimed in claim 14, is characterized in that,
Described overhang is below the half of thickness of this substrate.
16. silk-screen printing devices as claimed in claim 14, is characterized in that,
Described overhang is 0.01mm～0.5mm.
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| 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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| CN103770448B CN103770448B (en) | 2018-06-22 |
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| 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 |
| CN113666078A (en) * | 2021-08-20 | 2021-11-19 | 福建屹立智能化科技有限公司 | Plate conveying device applied to printing mechanism |
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| WO2017022109A1 (en) * | 2015-08-05 | 2017-02-09 | 富士機械製造株式会社 | Solder printing machine |
| 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 |
| CN112334313B (en) * | 2018-07-04 | 2023-06-27 | 松下知识产权经营株式会社 | Screen printing apparatus and screen printing method |
| JP7196627B2 (en) | 2019-01-21 | 2022-12-27 | 株式会社デンソー | vehicle controller |
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| JP2014083787A (en) | 2014-05-12 |
| CN103770448B (en) | 2018-06-22 |
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