CN104999782A - Self-adaptive scraper - Google Patents
Self-adaptive scraper Download PDFInfo
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- CN104999782A CN104999782A CN201510432794.3A CN201510432794A CN104999782A CN 104999782 A CN104999782 A CN 104999782A CN 201510432794 A CN201510432794 A CN 201510432794A CN 104999782 A CN104999782 A CN 104999782A
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- scraper
- shell fragment
- self adaptation
- scraper body
- mask plate
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Abstract
The invention discloses a self-adaptive scraper which is of a special leaf spring structure. The leaf spring is provided with an upper side combined end and a lower side self-adaptive end, wherein the upper side combined end is connected with a scraper body, and the lower side self-adaptive end is opposite to the upper side combined end. A straight line in which the lower side self-adaptive end of the leaf spring is located coincides with a straight line in which the knife edge end of the scraper body is located. The leaf spring can upspring relative to the scraper body. By means of the self-adaptive scraper, printing of the sizing agent on a mask plate with a protruding area can be better achieved.
Description
Technical field
The invention belongs to integrated circuit fields, relate to SMT print field, being specifically related to a kind of for printing the self adaptation scraper with three-dimensional protruding structural metal mask plate.
Background technology
Electronic circuit surface installation technique (Surface Mount Technology, SMT), be called surface mount or surface mounting technique, it is that one (will be called for short SMC/SMD without pin or short leg surface-assembled components and parts, Chinese claims sheet components and parts) be arranged on printed circuit board (Printed Circuit Board, PCB) on surface or the surface of other substrate, by the circuit load technology of the method such as Reflow Soldering or immersed solder welding assembly in addition.
In the process of SMT electronic circuit assembling, relate to the printing link of the slurries such as tin cream, its detailed process be with scraper the slurry be placed on metal mask plate scraped PCB substrate relevant position on, for next step operation is prepared.
Traditional PCB substrate of needs printing involved by SMT technology and the surface of metal mask plate are two-dimension plane structure, but along with the fast development of PCB industry, the surface of PCB substrate slurry to be printed has boss, and this boss is generally the components and parts be set in advance in PCB substrate and forms.Based on this; required metal mask plate has the three-dimensional bulge-structure adapted with PCB substrate boss; making when adopting metal mask plate printing, the corresponding boss in PCB substrate surface can either be protected, also can realize the most basic slurry transfer process.
Fig. 1-5 is depicted as the printing process that existing techniques in realizing has the protruding substrate of 3 D stereo, as shown in Figure 1, metal mask plate 11 tightens the plummer as printing slurry 14 by housing 12, printing slurry 14 is generally the material that tin cream etc. has certain fluidity, metal mask plate 11 is provided with opening 110 of biting, printing mechanism scrapes the printing slurry 14 be carried on metal mask plate 11 by scraper 10, the relevant position that printing slurry 14 is bitten on substrate 13 through opening 110.Figure 2 shows that the configuration diagram of substrate 13, substrate 13 has projection 130, based on this, metal mask plate 11 for the printing elevated regions 111(had as shown in Figure 3 Figure 3 shows that cross section partial schematic diagram when adopting metal mask plate 11 to print), it matches with the projection 130 on substrate 13 in printing process, Figure 4 shows that the partial schematic diagram of the metal mask plate 11 with elevated regions.Figure 5 shows that the floor map of scraper 10 in prior art, scraper 10 has the breach 100 adapted with the elevated regions 111 of metal mask plate 11, so that scraper effectively can avoid the elevated regions 111 of metal mask plate 11 when printing, making scraper can carry out slurry smoothly and scraping process.
Have in technology now, if when scraper 10 scrapes on print direction, its breach 100 region on metal mask plate 11 there is not opening 110, this tool scraper jaggy can meet the printing of slurry preferably; But reality is in some printing process, the breach 100 of scraper 10 region on metal mask plate 11 be often unavoidably provided with opening 110, as Figure 4 shows.Now carry out transfer printing according to scraper 10 pairs of slurries, due to the existence of breach 100, scraper 10 cannot to breach 100 opening 110 on region carry out filled therewith, namely the outs open 110 on metal mask plate 11 can not play the effect of slurry transfer printing, so prints out the requirement that substrate cannot enter next link.
In view of above problem, there is no effective solution at present in industry, generally solve by again repairing, based on this, the present invention mainly explores a kind of technical scheme solving above technical problem from root.
Summary of the invention
In view of this, the invention provides a kind of self adaptation scraper, can overcome above-mentioned defect of the prior art, it is in printing process, automatically can adapt to the bulge-structure on mask plate, effectively complete the printing process of mask plate spreading mass.
Concrete technical scheme involved in the present invention is as follows:
A kind of self adaptation scraper, it comprises scraper body and is arranged on the some shell fragments on scraper body, it is characterized in that, described scraper body has the edge of a knife end be arranged on the downside of it, the upside binding end that described shell fragment has with described scraper body connects and the downside self adaptation end relative with described upside binding end, the both sides of described shell fragment are separated with described scraper body by edge segmentation line, self adaptation end place, the downside straight line of described shell fragment overlaps with the edge of a knife end place straight line of described scraper body, and described shell fragment can be upspring by relatively described scraper body.
Further, described self adaptation scraper has the slurry on elevated regions mask plate for print surface, the shell fragment height of described self adaptation scraper is not less than the height in respective bump region on described mask plate, the shell fragment width of described self adaptation scraper be not less than respective bump region on described mask plate perpendicular to the Breadth Maximum on print direction.
Further, described scraper body and the described shell fragment of described self adaptation scraper are formed by metal material, and one-body molded.
Further, described shell fragment inside is provided with inside division line, and described shell fragment is divided into some parts by described inside division line, to adapt on print direction same shell fragment through the elevated regions of the some different size dimensions of mask plate.
Further, cut-off rule and the inside division line of described shell fragment both sides are linear pattern, and arrange perpendicular to the edge of a knife end of described scraper body.
Further, cut-off rule and the inside division line of described shell fragment both sides are linear pattern, the edge of a knife end of the part or all of relatively described scraper body in the cut-off rule of described shell fragment both sides and inside division line is obliquely installed, and the every part and the described scraper body that make to form described shell fragment have relatively uniform bond strength.
Further, the edge segmentation line on described shell fragment and inside division line are formed by laser cutting.
Further, described scraper body is provided with some balanced lines, described balanced line extends to described edge of a knife end by described scraper body inside.
Further, the balanced line on described scraper body is formed by laser cutting.
Beneficial effect of the present invention is, by self adaptation scraper provided by the invention, the printing process with elevated regions mask plate spreading mass can be met preferably: its shell fragment can masked plate elevated regions jack-up through mask plate elevated regions, thus ensures that scraper is normally scraping in process smoothly through mask plate elevated regions; And shell fragment is in region smooth on mask plate, it rebounds automatically, and the automatic adaptation end of described shell fragment and the edge of a knife end of scraper body form coherent concordant printing scraper end, adapts to the printing of mask plate flattened region spreading mass preferably.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Carry out the schematic diagram of slurry printing with scraper in prior art shown in Fig. 1;
Figure 2 shows that the configuration diagram of substrate 13;
Figure 3 shows that cross section partial schematic diagram when adopting metal mask plate 11 to print;
Figure 4 shows that the partial schematic diagram of the metal mask plate 11 with elevated regions;
Figure 5 shows that the floor map of scraper 10 in prior art;
Figure 6 shows that the part plan schematic diagram one of metal mask plate;
Figure 7 shows that embodiment one floor map of self adaptation scraper of the present invention;
Figure 8 shows that the schematic diagram through metal mask plate elevated regions when adopting self adaptation scraper of the present invention printing;
Figure 9 shows that the part plan schematic diagram two of metal mask plate;
Figure 10 shows that embodiment two floor map of self adaptation scraper of the present invention;
Figure 11 shows that embodiment three floor map of self adaptation scraper of the present invention;
Figure 12 shows that embodiment four floor map of self adaptation scraper of the present invention;
Figure 13 shows that embodiment five floor map of self adaptation scraper of the present invention.
Wherein, in Fig. 1,10 is traditional scraper, and 11 is metal mask plate, and 110 for being arranged on the opening on mask plate 11, and 12 is the housing of permanent mask plate 11, and 13 is substrate to be printed, and 14 is the slurry of printing;
In Fig. 2,130 is arrange projection on the substrate 13;
In Fig. 3,111 is the elevated regions on metal mask plate 11;
In Fig. 5,100 is that conventional drag avoids the breach in metal mask plate 11 projection region 111;
In Fig. 7,20 is scraper body involved in the present invention, and 210 is the edge of a knife end on the downside of scraper body 20, and 200 for being arranged on the shell fragment on scraper body 20,2001 is the upside binding end that shell fragment 200 is connected with scraper body 20, and 2002 is the downside self adaptation end of shell fragment 200;
201,202 is the edge segmentation line of shell fragment 200 both sides;
In Figure 10 to Figure 12,203,204 is the inside division line of shell fragment 200;
In Figure 13,205 for being arranged on the balanced line on scraper body 20.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Figure 7 shows that embodiment one floor map of self adaptation scraper of the present invention.As shown in Figure 7, self adaptation scraper comprises scraper body 20 and is arranged on the some shell fragments 200 on scraper body 20, scraper body has the edge of a knife end 210 be arranged on the downside of it, the upside binding end 2001 that shell fragment 200 has with scraper body connects and the downside self adaptation end 2002 relative with upside binding end 2001, the both sides of shell fragment 200 are by edge segmentation line 201, 202 are separated with scraper body 20, self adaptation end 2002 place, the downside straight line of shell fragment 200 overlaps with the edge of a knife end 210 place straight line of scraper body 20, namely as shown in Figure 7, when there is not external force or extraneous strength condition is identical, self adaptation end 2002 place, downside straight line and the edge of a knife end 210 of scraper body 20 of shell fragment 200 form coherent concordant structure, in addition, due to edge segmentation line 201, the existence of 202, shell fragment 200 can be upspring by scraper body 20 relatively.
Self adaptation scraper involved in the present invention has the slurry on elevated regions mask plate for print surface, Figure 6 shows that a kind of part plan schematic diagram of mask plate, and elevated regions 111 periphery has the opening 110 needed in a large number by scraper printing slurry.Figure 8 shows that the partial schematic diagram through the elevated regions of mask plate shown in Fig. 6 when adopting the printing of self adaptation scraper shown in Fig. 7; the shell fragment 200 height h of self adaptation scraper is not less than the height H in respective bump region on mask plate; the shell fragment width g of self adaptation scraper be not less than respective bump region on described mask plate perpendicular to the Breadth Maximum G on print direction, thus ensure carrying out smoothly of printing process; In addition, in this printing process, the edge of a knife end 210 of scraper body 20 is close to the upper surface of mask plate 11, elevated regions 111 jack-up on the masked plate 11 of shell fragment 200.Scraper is after elevated regions 111, and shell fragment 200 returns to original state under the elastic force of self, and can carry out filled therewith to self inswept opening of shell fragment 200 on mask plate 11.
In the present invention, the described scraper body 20 of involved self adaptation scraper is formed by metal material with described shell fragment 200, and it is one-body molded, as a kind of preferred embodiment, involved self adaptation scraper directly directly forms final structure by laser cutting by stainless steel substrates.Certainly, it will be appreciated by persons skilled in the art that in some cases, can be non-metallic material by scraper material design involved in the present invention, and such as it can be that other can meet the organic composite material etc. of printing requirement of strength.
In the application process of scraper involved in the present invention, same shell fragment to be there is on print direction through the elevated regions of the some different size dimensions of mask plate, one specific embodiment as shown in Figure 9, the another kind of structural plan schematic diagram of mask plate shown in Fig. 9, i.e. not shown shell fragment in same shell fragment 200(Fig. 9 on print direction, can reference diagram 8) can through the elevated regions 111 of mask plate two different size dimensions.Now, the shell fragment inside of described self adaptation scraper is provided with some inside division lines, and as shown in Figure 10, shell fragment is divided into three junior units by inside division line 203,204.Corresponding to the schematic diagram of mask plate shown in Fig. 9, when the shell fragment 200 of self adaptation scraper is in Fig. 9 above mask plate during large-sized elevated regions 111,3 junior units forming shell fragment all upspring to adapt to this elevated regions 111; When the shell fragment 200 of self adaptation scraper is through below during undersized elevated regions 111, middle the junior unit forming shell fragment is upspring, and junior unit maintenance in both sides is consistent with the edge of a knife end 210 of scraper body 20.
The shell fragment 200 of the self adaptation scraper shown in above embodiment is jointly made up of 3 pieces of junior units, it can adapt to comparatively complicated printing process, certainly, in some other embodiment of the present invention, the shell fragment 200 of self adaptation scraper can be made up of more junior units; Also can be that some shell fragments of a block adaptive scraper have different structures.Certainly, on described self adaptation scraper, the concrete structure of shell fragment is determined by the practical structures of mask plate, and this is comparatively easy understand for those skilled in the art.
In the embodiment above, edge segmentation line 201,202 and the inside division line 203,204 of shell fragment 200 both sides are linear pattern, and arrange perpendicular to the edge of a knife end 210 of scraper body 20, as shown in Figure 10.
In further embodiments, the cut-off rule 201,202 of shell fragment 200 both sides and inside division line are 203,204 linear patterns, in the cut-off rule 201,202 of shell fragment 200 both sides and inside division line 203,204 partly or entirely relatively the edge of a knife end 210 of scraper body 20 be obliquely installed, the every part and the scraper body 20 that make to form shell fragment 200 have relatively uniform bond strength.Specifically, as shown in figure 11, the edge of a knife end 210 of the relative scraper body 20 of edge segmentation line 201,202 of shell fragment 200 both sides is obliquely installed; As shown in figure 12, the edge of a knife end 210 of the relative scraper body 20 of shell fragment 200 inside division line 203,204 is obliquely installed.In concrete design process, technical staff should in conjunction with the concrete size relationship in mask plate projection region, (guarantee that each junior unit all has stronger connection with scraper body by the edge segmentation line and inside division line that reasonably configure shell fragment 200, namely the connecting portion of each junior unit and scraper body has relatively large size, avoid the size for connection of part junior unit and scraper body too small), thus make each junior unit forming shell fragment 200 all have comparatively suitable intensity while can better meeting slurry printing, thus ensure the life-span of self adaptation scraper.As shown in Figure 11, a1, a2, a3 are respectively the size for connection forming shell fragment 200 3 junior units, and each junior unit all has larger size for connection with scraper body.
In addition in the present embodiment, on shell fragment 200 edge segmentation line and inside division line formed by laser cutting.In some other embodiment, on shell fragment 200 edge segmentation line and inside division line also can be formed by other technique (such as machine cuts).
In another embodiment of the invention, scraper body 20 is provided with some balanced lines 205, balanced line 205 extends to edge of a knife end 210 by described scraper body 20 inside, and the balanced line on scraper body 20 is formed by laser cutting.Balanced line 205 object arranged is 210 points larger for length dimension between adjacent two shell fragments, edge of a knife end to be set to some parts, make self adaptation scraper in use, the edge of a knife end 210 of whole self adaptation scraper has akin applied environment with the self adaptation end 2002 of shell fragment 200.In other words, can be understood as: the shell fragment edge segmentation line 201,202 on self adaptation scraper, inside division line 203,204, and the balanced line 205 on scraper body is jointly by separated for the printing scraper end of self adaptation scraper, make each region force environment on scraper as far as possible close, thus improve the performance of scraper.
It should be noted that in the present invention, " print direction " is, self adaptation scraper scrapes moving direction during slurry on mask plate, in the various figures with reference to the corresponding direction of arrow.In addition, in disclosed embodiment of this invention, edge segmentation line 201,202, inside division line 203,204, and balanced line 205 is linear pattern, in actual application, technical staff completely can according to practical application, and adjustment dependent linearity, such as, can be set to curve etc.
Beneficial effect of the present invention is, by self adaptation scraper provided by the invention, the printing process with elevated regions mask plate spreading mass can be met preferably: its shell fragment can masked plate elevated regions jack-up through mask plate elevated regions, thus ensures that scraper is normally scraping in process smoothly through mask plate elevated regions; And shell fragment is in region smooth on mask plate, it rebounds automatically, and the automatic adaptation end of described shell fragment and the edge of a knife end of scraper body form coherent concordant printing scraper end, adapts to the printing of mask plate flattened region spreading mass preferably.
Although be described in detail the specific embodiment of the present invention with reference to multiple illustrative examples of the present invention, but it must be understood that, those skilled in the art can design multiple other improvement and embodiment, these improve and embodiment will drop within spirit and scope.Specifically, within the scope of aforementioned open, accompanying drawing and claim, rational modification and improvement can be made in the layout of parts and/or sub-combination layout, and spirit of the present invention can not be departed from.Except modification and the improvement of parts and/or layout aspect, its scope is by claims and equivalents thereof.
Claims (9)
1. a self adaptation scraper, it comprises scraper body and is arranged on the some shell fragments on scraper body, it is characterized in that, described scraper body has the edge of a knife end be arranged on the downside of it, the upside binding end that described shell fragment has with described scraper body connects and the downside self adaptation end relative with described upside binding end, the both sides of described shell fragment are separated with described scraper body by edge segmentation line, self adaptation end place, the downside straight line of described shell fragment overlaps with the edge of a knife end place straight line of described scraper body, and described shell fragment can be upspring by relatively described scraper body.
2. a kind of self adaptation scraper according to claim 1, it is characterized in that, described self adaptation scraper has the slurry on elevated regions mask plate for print surface, the shell fragment height of described self adaptation scraper is not less than the height in respective bump region on described mask plate, the shell fragment width of described self adaptation scraper be not less than respective bump region on described mask plate perpendicular to the Breadth Maximum on print direction.
3. a kind of self adaptation scraper according to claim 1 and 2, is characterized in that, described scraper body and the described shell fragment of described self adaptation scraper are formed by metal material, and one-body molded.
4. a kind of self adaptation scraper according to claim 2, it is characterized in that, described shell fragment inside is provided with inside division line, and described shell fragment is divided into some parts by described inside division line, to adapt on print direction same shell fragment through the elevated regions of the some different size dimensions of mask plate.
5. a kind of self adaptation scraper according to claim 4, is characterized in that, cut-off rule and the inside division line of described shell fragment both sides are linear pattern, and arranges perpendicular to the edge of a knife end of described scraper body.
6. a kind of self adaptation scraper according to claim 4, it is characterized in that, cut-off rule and the inside division line of described shell fragment both sides are linear pattern, the edge of a knife end of the part or all of relatively described scraper body in the cut-off rule of described shell fragment both sides and inside division line is obliquely installed, and the every part and the described scraper body that make to form described shell fragment have relatively uniform bond strength.
7. according to the self adaptation scraper in claim 4-6 described in any one, on described shell fragment edge segmentation line and inside division line formed by laser cutting.
8. a kind of self adaptation scraper according to claim 1,2,4,5 or 6, is characterized in that, described scraper body is provided with some balanced lines, described balanced line extends to described edge of a knife end by described scraper body inside.
9. a kind of self adaptation scraper according to claim 8, it is characterized in that, the balanced line on described scraper body is formed by laser cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510432794.3A CN104999782A (en) | 2015-07-22 | 2015-07-22 | Self-adaptive scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510432794.3A CN104999782A (en) | 2015-07-22 | 2015-07-22 | Self-adaptive scraper |
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| Publication Number | Publication Date |
|---|---|
| CN104999782A true CN104999782A (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510432794.3A Pending CN104999782A (en) | 2015-07-22 | 2015-07-22 | Self-adaptive scraper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666919A (en) * | 2019-09-24 | 2020-01-10 | 南通理工学院 | Self-adaptive speed regulation control method for spreading scraper of ceramic 3D printer |
| CN111221213A (en) * | 2020-01-13 | 2020-06-02 | 合肥维信诺科技有限公司 | Mask device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08108519A (en) * | 1994-10-08 | 1996-04-30 | Sony Corp | Printing squeegee |
| CN101396901A (en) * | 2007-09-29 | 2009-04-01 | 华硕电脑股份有限公司 | Scraper for screen printing |
| CN201580046U (en) * | 2010-01-15 | 2010-09-15 | 浙江天晶新能源科技有限公司 | Solar battery screen printing scraper bracket |
| KR101199922B1 (en) * | 2011-09-07 | 2012-11-13 | 프러스전자 주식회사 | A Squeegee for printing a Screen of PCB |
-
2015
- 2015-07-22 CN CN201510432794.3A patent/CN104999782A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08108519A (en) * | 1994-10-08 | 1996-04-30 | Sony Corp | Printing squeegee |
| CN101396901A (en) * | 2007-09-29 | 2009-04-01 | 华硕电脑股份有限公司 | Scraper for screen printing |
| CN201580046U (en) * | 2010-01-15 | 2010-09-15 | 浙江天晶新能源科技有限公司 | Solar battery screen printing scraper bracket |
| KR101199922B1 (en) * | 2011-09-07 | 2012-11-13 | 프러스전자 주식회사 | A Squeegee for printing a Screen of PCB |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666919A (en) * | 2019-09-24 | 2020-01-10 | 南通理工学院 | Self-adaptive speed regulation control method for spreading scraper of ceramic 3D printer |
| CN111221213A (en) * | 2020-01-13 | 2020-06-02 | 合肥维信诺科技有限公司 | Mask device |
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Application publication date: 20151028 |