CN104494292A - Scraper - Google Patents
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- CN104494292A CN104494292A CN201410687233.3A CN201410687233A CN104494292A CN 104494292 A CN104494292 A CN 104494292A CN 201410687233 A CN201410687233 A CN 201410687233A CN 104494292 A CN104494292 A CN 104494292A
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- feeding chamber
- raw material
- doctor blade
- blade device
- scraper body
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- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
The invention discloses a scraper comprising a scraper body with an enclosed cavity inside. A piston body is arranged inside the enclosed cavity of the scraper body, scraper body cylinders are connected with the piston body are arranged on the scraper body, and a raw material entering and exiting port allowing raw materials to enter and exit from the enclosed cavity of the scraper body is arranged in the scraper body; the scraper body cylinders are used for driving the piston body to move inside the enclosed cavity of the scraper body, negative pressure is generated inside the enclosed body of the scraper body, and raw materials at the raw material entering and exiting port of the scraper body are sucked. The negative pressure is formed inside the enclosed cavity of the scraper body, and the raw materials which are not scraped on a steel screen are sucked back into the enclosed cavity of the scraper body, so that no raw material remains on the steel screen after printing, and the steel screen is kept clean.
Description
Technical field
The present invention relates to paste solder printing and battery print field, particularly relate to a kind of doctor blade device, stencil printer, can the system of stencil printer Automatic-feeding and the scraper method of stencil printer be given.
Background technology
Now domestic at present stencil printer tin cream when printing is on steel mesh entirely, promotes to come in before tin cream rolls on steel mesh printing by scraper; Because machine is ceaselessly operating, machine intimate can raise because of the work of electric elements temperature slowly, and tin cream just can not be placed for a long time on steel mesh, if machine stops, tin cream just must collect, otherwise can exsiccation slowly.
Summary of the invention
The embodiment of the present invention provides a kind of doctor blade device, comprise: inside is provided with the scraper body of closed cavity, the closed cavity inside of described scraper body is provided with piston body, described scraper body is provided with the scraper body cylinder be connected with described piston body, described scraper body is provided with the turnover raw material mouth for making raw material pass in and out described scraper body closed cavity;
Described scraper body cylinder, for driving described piston body at the closed cavity internal motion of described scraper body, makes the closed cavity inside of described scraper body produce negative pressure, absorbs the raw material at described turnover raw material mouth place.
Preferably, described scraper body is provided with feeding chamber;
Described feeding chamber is used for storing and supplying raw materials to described scraper body.
Preferably, described feeding chamber comprises: two separate the first feeding chambers for taking up raw material and the second feeding chamber;
Described first feeding chamber inside is provided with first piston, and described first feeding chamber outer setting has the first cylinder be connected with described first piston;
Described first cylinder is for driving described first piston at described first feeding chamber internal motion, and make described first feeding chamber inside produce air pressure, the seal chamber raw material of described first feeding chamber inside being pressed into described scraper body is inner;
Described second feeding chamber inside is provided with the second piston, and described second feeding chamber outer setting has the second cylinder be connected with described second piston;
Described second cylinder is for driving described second piston at described second feeding chamber internal motion, and make described second feeding chamber inside produce air pressure, the seal chamber raw material of described second feeding chamber inside being pressed into described scraper body is inner.
Preferably, described first feeding chamber inside is also provided with the first pressure sensor, described second feeding chamber inside is also provided with the second pressure sensor, and described scraper body is also provided with the control device be conducted with described first pressure sensor and described second pressure sensor;
Described first pressure sensor and described second pressure sensor are used for the internal pressure responding to described first feeding chamber and described second feeding chamber respectively;
Described control device is used for the internal pressure of described first feeding chamber and described second feeding chamber sensed respectively according to described first pressure sensor and described second pressure sensor, control described first cylinder and described second cylinder respectively to described first feeding chamber and described second feeding chamber pressurization, make to there is pressure differential between described first feeding chamber inside and described second feeding chamber inside, thus raw material can flow between the seal chamber of described first feeding chamber, described scraper body and described second feeding chamber.
Preferably, described first feeding chamber and described second feeding chamber are respectively arranged with the first charging aperture and the second charging aperture;
Described first charging aperture and described second charging aperture are used for adding raw material to described first feeding chamber and described second feeding chamber inside.
A kind of stencil printer, comprising:
Doctor blade device described above and printed steel mesh;
Described doctor blade device is provided with scraper, and the turnover raw material mouth of described doctor blade device is near described scraper;
Described scraper and described printed steel mesh fit tightly;
Described scraper is for striking off under described first cylinder and described second cylinder drive the effect of described first piston and described second piston respectively, seal chamber raw material in described first feeding chamber and described second feeding chamber being pressed into described scraper body is inner, and is extruded into the raw material on described printed steel mesh by described turnover raw material mouth.
Preferably, comprising: described first induction installation be connected with the control device conducting of described doctor blade device and the second induction installation;
Described first induction installation and described second induction installation are separately positioned on two ends of described doctor blade device movement travel repeatedly on described stencil printer;
Described first induction installation is used for when described doctor blade device is scraped to described first induction installation, trigger described first induction installation, make described control device control first piston described in described first air cylinder driven and be greater than the pressure of the second piston described in described second air cylinder driven in described second feeding chamber inside generation at the pressure that described first feeding chamber inside produces, thus the inner raw material of described first feeding chamber is extruded on described printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in described doctor blade device is clamp-oned described second feeding chamber;
Described second induction installation is used for when described doctor blade device is scraped to described second induction installation, trigger described second induction installation, make described control device control the second piston described in described second air cylinder driven and be greater than the pressure of first piston described in described first air cylinder driven in described first feeding chamber inside generation at the pressure that described second feeding chamber inside produces, thus the inner raw material of described second feeding chamber is extruded on described printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in doctor blade device is clamp-oned described first feeding chamber.
Preferably, described doctor blade device is also provided with seal bootr;
It is outside that described seal bootr cover is combined in described scraper, for described doctor blade device when non-operation, protects described scraper.
A system for stencil printer Automatic-feeding can be given,
Comprise: stencil printer and feeder apparatus;
Described feeder apparatus comprises the level-sensing device that the feeding device that is communicated with the second charging aperture of the second feeding chamber with the first charging aperture of the first feeding chamber of described stencil printer respectively and the first feeding chamber and the second feeding chamber for detecting described stencil printer carry material quantity;
Described feeding device comprises Level control module;
Described Level control module is electrically connected with described level-sensing device, during for reaching setting threshold value when the first feeding chamber of described stencil printer or the material quantity of the second feeding chamber, described level-sensing device sends pulse signal to described Level control module, and described Level control module controls in the feed bin that described feeding device stops reaching described threshold value to described stencil printer reinforced according to described pulse signal.
A scraper method for stencil printer, comprising:
S1: the scraper of doctor blade device and printed steel mesh are fitted tightly;
S2: when doctor blade device is scraped to the first induction installation, trigger the first induction installation, make control device control the first air cylinder driven first piston and be greater than the pressure of the second air cylinder driven second piston in the second feeding chamber inside generation at the pressure that the first feeding chamber inside produces, doctor blade device is made to put in raw material process scraping on printed steel mesh, the inner raw material of first feeding chamber is extruded on printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in the scraper body of doctor blade device is clamp-oned the second feeding chamber;
S3: when doctor blade device is scraped to the second induction installation, the scraper body air cylinder driven piston body of doctor blade device, at the closed cavity internal motion of scraper body, makes the closed cavity inside of scraper body produce negative pressure, absorbs the raw material at scraper body turnover raw material mouth place;
Simultaneously, make control device control the second air cylinder driven second piston and be greater than the pressure of the first air cylinder driven first piston in the first feeding chamber inside generation at the pressure that the second feeding chamber inside produces, doctor blade device is made to put in raw material process scraping on printed steel mesh, the inner raw material of second feeding chamber is extruded on printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in doctor blade device is clamp-oned the first feeding chamber;
S4: when doctor blade device is scraped to the first induction installation, the scraper body air cylinder driven piston body of doctor blade device is at the closed cavity internal motion of scraper body, the closed cavity inside of scraper body is made to produce negative pressure, absorb the raw material at scraper body turnover raw material mouth place, return S2 step to start to scrape and put raw material, until scraper process terminates.
As can be seen from the above technical solutions, the present invention has the following advantages:
Scraper body air cylinder driven piston body, at the closed cavity internal motion of scraper body, makes the closed cavity inside of scraper body produce negative pressure, absorbs the raw material at the turnover raw material mouth place of scraper body.Form a negative pressure at the closed cavity internal-internal of scraper body, the raw material of striking non-on steel mesh is absorbed back in the closed cavity of scraper body, just do not need manually by unspent material collection after printing like this, thus improve production efficiency.
Term " first ", " second ", " the 3rd " " 4th " etc. (if existence) in description of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, and intention is to cover not exclusive comprising.
In the present embodiment, first feeding chamber 11 and the second feeding chamber 21 are for taking up raw material, and by the first cylinder 12, first piston 13, second cylinder 22 and the second piston 23 in the first feeding chamber 11 and the second feeding chamber 21, respectively at the first feeding chamber 11 and the second feeding chamber 21 internal motion, seal chamber raw material being pressed into described scraper body 1 is inner, the striking of supply doctor blade device.Cylinder and piston is added like this in the first feeding chamber 11 and the second feeding chamber 21, the first feeding chamber 11 and the second feeding chamber 21 inside can be made to produce negative pressure, by air cylinder driven piston movement, by inner for the seal chamber of the raw material of the first feeding chamber 11 and the second feeding chamber 21 inside press-in scraper body 1, achieve auto feed effect.
In order to avoid the uncontrollable too much raw material of press-in that will cause of the pressure produced due to the first feeding chamber 11 and the second feeding chamber 21 inside enters in the seal chamber of scraper body 1, can not striking timely use, raw material is made longly to cause drying and the problem lost efficacy in seal chamber standing time of scraper body 1, in the present embodiment, refer to shown in Fig. 3, described first feeding chamber 11 inside is also provided with the first pressure sensor, described second feeding chamber 21 inside is also provided with the second pressure sensor, and be conducted with described first pressure sensor and described second pressure sensor, and the control device that described first cylinder 21 and described second cylinder 22 pressurize to described first feeding chamber 11 and described second feeding chamber 21 can be controlled,
Described first pressure sensor and described second pressure sensor are for responding to the internal pressure of described first feeding chamber 11 and described second feeding chamber 21;
Described control device is used for the internal pressure of described first feeding chamber 11 and described second feeding chamber 21 responded to according to described first pressure sensor and described second pressure sensor, by controlling the pressurization to described first feeding chamber 11 and described second feeding chamber 21 of described first cylinder 12 and described second cylinder 22, make to there is pressure differential between described first feeding chamber 11 inside and described second feeding chamber 21 inside, impel raw material can flow between the seal chamber of described first feeding chamber 11, described scraper body 1 and described second feeding chamber.
It can thus be appreciated that, the first pressure sensor is also provided with in described first feeding chamber 11 inside, described second feeding chamber 21 inside is also provided with the second pressure sensor, arrange in doctor blade device inside and be conducted with described first pressure sensor and described second pressure sensor, and can control described first cylinder 21 and described second cylinder 22 control device to described first feeding chamber 11 and described second feeding chamber 21 pressurization; Such first pressure sensor and the second pressure sensor can detect the first feeding chamber 11 and the second feeding chamber 21 internal pressure in real time, and regulate the first feeding chamber 11 and the second feeding chamber 21 internal pressure by control device, make to there is pressure differential between described first feeding chamber 11 inside and described second feeding chamber 21 inside, impel raw material can flow between the seal chamber of described first feeding chamber 11, described scraper body 1 and described second feeding chamber.
Concrete, if the pressure of the first feeding chamber 11 is greater than the second feeding chamber 21 internal pressure, will the seal chamber that raw material enters scraper body 1 from raw material be clamp-oned steel mesh by turnover raw material mouth like this, simultaneously because the seal chamber of scraper body 1 contacts with steel mesh, the seal chamber of scraper body 1 is a closed cavity, and it is inner that the second feeding chamber 21 just clamp-oned by raw material unnecessary like this.Prevent from resting in seal chamber at the redundance of the seal chamber inside of scraper body 1, and above action can be repeated like this, raw material is shuttling movement back and forth between the first feeding chamber 11 and the second feeding chamber 21 just, so just serve the stirring action of raw material, raw material is prevented to be not easy drying and to lose efficacy, and after raw material stirred fully, make to scrape that to put effect better.
As a same reason, if the pressure of the second feeding chamber 21 is greater than the first feeding chamber 11 internal pressure, will the seal chamber that raw material enters scraper body 1 from raw material be clamp-oned steel mesh by turnover raw material mouth like this, simultaneously because the seal chamber of scraper body 1 contacts with steel mesh, the seal chamber of scraper body 1 is a closed cavity, and it is inner that the first feeding chamber 11 just clamp-oned by raw material unnecessary like this.
Certainly two feeding chambers arranged in the present embodiment, in order to make raw material shuttling movement back and forth abundant, and doctor blade device structure is more reasonable, two feeding chambers is arranged on the both sides of scraper body, the height of two feeding chambers, higher than scraper body seal chamber, is convenient to the flowing of raw material like this.
Here also can arrange multiple feeding chamber, the pressure between feeding chamber is controlled by control device, and unnecessary raw material is remained to the flowing of direction, makes can to keep between multiple feeding chamber the pressure differential that stable.
In the present embodiment, described first feeding chamber 11 and described second feeding chamber 21 are respectively arranged with the first charging aperture 14 and the second charging aperture 24; Described first charging aperture 14 and described second charging aperture 24 are for adding raw material to described first feeding chamber 11 and described second feeding chamber 21 inside.
The invention provides a kind of stencil printer, comprising: doctor blade device and printed steel mesh; Described doctor blade device is provided with scraper 5, and the turnover raw material mouth 4 of described doctor blade device is arranged near described scraper 5;
Scraper 5 and the described printed steel mesh of described doctor blade device fit tightly, for the raw material in described first feeding chamber 11 of described doctor blade device and described second feeding chamber 21, under described first cylinder 12 and described second cylinder 22 drive the effect of described first piston 13 and described second piston 23, seal chamber raw material being pressed into described scraper body 1 is inner, be extruded on described printed steel mesh by the turnover raw material mouth 4 of described doctor blade device, and struck off by described scraper 5.
Scraper 5 and the described printed steel mesh of described doctor blade device fit tightly, and the seal chamber inside can reducing scraper body 1 exchanges with ambient atmos, reduces the first feeding chamber 11 and described second feeding chamber 21 inner cylinders effect, brings energy-saving and cost-reducing to production.
In the present invention, the motion of doctor blade device is back and forth reciprocal, be not run toward the direction, in order to increase work efficiency, the utilization rate of increase equipment, comprises at stencil printer: described first induction installation be connected with the control device conducting of described doctor blade device and the second induction installation.Here the first induction installation and the second induction installation can adopt photoelectric position limit to open the light, or mechanical stop etc., object is in order to control doctor blade device movement position reciprocal back and forth.
Further described first induction installation and described second induction installation are separately positioned on two ends of described doctor blade device movement travel repeatedly on stencil printer in the present invention, for when described doctor blade device is scraped to described first induction installation, trigger described first induction installation, making described first cylinder 12 of described control device control drive described first piston 13 to be greater than described second cylinder 22 at the pressure that described first feeding chamber 11 inside produces drives described second piston 23 at the pressure of described second feeding chamber 21 inside generation, the inner raw material of described first feeding chamber 11 is extruded on described printed steel mesh by the turnover raw material mouth 4 of described doctor blade device, and raw material unnecessary in described doctor blade device is clamp-oned described second feeding chamber 21,
When described doctor blade device is scraped to described second induction installation, trigger described second induction installation, making described second cylinder 22 of described control device control drive described second piston 23 to be greater than described first cylinder 12 at the pressure that described second feeding chamber 21 inside produces drives described first piston 13 at the pressure of described first feeding chamber 11 inside generation, the inner raw material of described second feeding chamber 21 is extruded on described printed steel mesh by the turnover raw material mouth 4 of described doctor blade device, and raw material unnecessary in doctor blade device is clamp-oned described first feeding chamber 11.
Here operation principle is the same with the Stress control principle of above-mentioned doctor blade device, difference is that the first induction installation is connected with the control device of doctor blade device with described second induction installation, and control device controls inner pressure change by doctor blade device at the running orbit of stencil printer.
In the present invention, refer to shown in Fig. 4, described doctor blade device is also provided with seal bootr 6; It is outside that described seal bootr 6 cover is combined in described scraper 5, for described doctor blade device when non-operation, protects described scraper 5.
Concrete, before printing, manually take off the seal bootr 6 of doctor blade device, scraper 5 declines, and steel mesh is close to by scraper 5, makes the closed cavity of scraper body and steel mesh form a closed cavity; Scraper body cylinder drives scraper body piston body to decline simultaneously.
In the present invention, also provide a kind of to the system of stencil printer Automatic-feeding, to comprise: stencil printer and feeder apparatus;
Described feeder apparatus comprises the level-sensing device that the feeding device that is communicated with the second charging aperture 24 with the first feeding chamber 11 of described stencil printer and the first charging aperture 14 of the second feeding chamber 21 respectively and the first feeding chamber 11 and the second feeding chamber 21 for detecting described stencil printer carry material quantity;
Described feeding device comprises Level control module;
Described Level control module is electrically connected with described level-sensing device, during for reaching setting threshold value when the first feeding chamber 11 of described stencil printer and the material quantity of the second feeding chamber 21, described level-sensing device sends pulse signal to described Level control module, and described Level control module controls described feeding device according to described pulse signal and stops in first feeding chamber 11 and the second feeding chamber 21 of described stencil printer reinforced.
It can thus be appreciated that, first charging aperture 14 and the second charging aperture 24 of the first feeding chamber 11 and the second feeding chamber 21, couple together with feeder apparatus, just can form an automatic feed system, need not manually timing go add tin cream or printing slurry, and artificial reinforced trouble can be saved, operating efficiency is provided, can the production automation be realized.
Here feeder apparatus can adopt belt-type automatic feeder, specifically raw material is joined feed bin, by belt-conveying in the first feeding chamber 11 and the second feeding chamber 21, certainly can also be transmitted etc. by chain.
In the present invention, a kind of scraper method of stencil printer is also provided, comprises: refer to shown in Fig. 5,
S1: the scraper of doctor blade device and printed steel mesh are fitted tightly;
S2: when doctor blade device is scraped to the first induction installation, trigger the first induction installation, make control device control the first air cylinder driven first piston and be greater than the pressure of the second air cylinder driven second piston in the second feeding chamber inside generation at the pressure that the first feeding chamber inside produces, doctor blade device is made to put in raw material process scraping on printed steel mesh, the inner raw material of first feeding chamber is extruded on printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in the scraper body of doctor blade device is clamp-oned the second feeding chamber;
S3: when doctor blade device is scraped to the second induction installation, the scraper body air cylinder driven piston body of doctor blade device, at the closed cavity internal motion of scraper body, makes the closed cavity inside of scraper body produce negative pressure, absorbs the raw material at scraper body turnover raw material mouth place;
Simultaneously, make control device control the second air cylinder driven second piston and be greater than the pressure of the first air cylinder driven first piston in the first feeding chamber inside generation at the pressure that the second feeding chamber inside produces, doctor blade device is made to put in raw material process scraping on printed steel mesh, the inner raw material of second feeding chamber is extruded on printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in doctor blade device is clamp-oned the first feeding chamber;
S4: when doctor blade device is scraped to the first induction installation, the scraper body air cylinder driven piston body of doctor blade device is at the closed cavity internal motion of scraper body, the closed cavity inside of scraper body is made to produce negative pressure, absorb the raw material at scraper body turnover raw material mouth place, return S2 step to start to scrape and put raw material, until scraper process terminates.
Such scraper body air cylinder driven piston body, at the closed cavity internal motion of scraper body, makes the closed cavity inside of scraper body produce negative pressure, absorbs the raw material at the turnover raw material mouth place of scraper body.Form a negative pressure at the closed cavity internal-internal of scraper body, absorb back in the closed cavity of scraper body by the raw material of striking non-on steel mesh, the raw material like this after printing would not remain on steel mesh, keeps the clean of steel mesh.
Raw material can also be made to circulate between the first feeding chamber and the second feeding chamber, prevent redundance from resting in the seal chamber of scraper body, make raw material just shuttling movement back and forth between the first feeding chamber and the second feeding chamber, so just serve the stirring action of raw material, prevent raw material be not easy drying and lost efficacy.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in description below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structure chart of an embodiment of doctor blade device provided by the invention;
Fig. 2 is the structure chart of another embodiment of doctor blade device provided by the invention;
Fig. 3 is the structure chart of another embodiment of doctor blade device provided by the invention;
Fig. 4 is the scraper of stencil printer provided by the invention and the structure chart of seal bootr;
Fig. 5 is the flow chart of the scraper method that the invention provides stencil printer.
Description of reference numerals:
1 scraper body, 2 scraper body cylinders, 3 piston bodies, 4 turnover raw material mouths, 5 scrapers, 6 seal bootrs, 11 first feeding chambers, 12 first cylinders, 13 first pistons, 14 first charging apertures, 21 second feeding chambers, 22 second cylinders, 23 second pistons, 24 second charging apertures
Detailed description of the invention
For making goal of the invention of the present invention, feature, advantage can be more obvious and understandable; specific embodiment and accompanying drawing will be used below; the technical scheme of the present invention's protection is clearly and completely described; obviously; the embodiments described below are only the present invention's part embodiments, and the embodiment of not all.Based on the embodiment in this patent, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of this patent protection.
In the present embodiment, refer to Fig. 1 and shown in composition graphs 2, comprise: inside is provided with the scraper body 1 of closed cavity, the closed cavity inside of described scraper body 1 is provided with piston body 3, described scraper body 1 is provided with the scraper body cylinder 2 be connected with described piston body 3, described scraper body 1 is provided with the turnover raw material mouth 4 for making raw material pass in and out;
Described scraper body cylinder 2, for driving described piston body 3 at the closed cavity internal motion of described scraper body 1, makes the closed cavity inside of described scraper body 1 produce negative pressure, absorbs the raw material at turnover raw material mouth 4 place of described scraper body 1.Here raw material comprises the raw material such as tin cream or printing slurry.
Be understandable that, scraper body cylinder 2 drives described piston body 3 to be moved up and down along doctor blade device by the parallel plane direction of scraper in the closed cavity inside of described scraper body 1, the turnover raw material mouth 4 of scraper body 1 is made to produce negative pressure, just do not need manually by unspent material collection after such printing, thus improve production efficiency
It can thus be appreciated that scraper body cylinder 2 driven plunger body, at the closed cavity internal motion of scraper body 1, makes the closed cavity inside of scraper body 1 produce negative pressure, absorbs the raw material at the turnover raw material mouth place of scraper body 1.Form a negative pressure at the closed cavity internal-internal of scraper body 1, absorb back in the closed cavity of scraper body 1 by the raw material of striking non-on steel mesh, the raw material like this after printing would not remain on steel mesh, keeps the clean of steel mesh.
In the present embodiment, described scraper body is provided with feeding chamber; Described feeding chamber is used for storing and supplying raw materials to described scraper body.Be understandable that feeding chamber can the storage of raw materials, and in scraper process, supply raw materials to scraper body.
Further, in the present embodiment, described feeding chamber comprises: two separate the first feeding chamber 11 and the second feeding chambers 21 for taking up raw material;
Described first feeding chamber 11 inside is provided with first piston 13, and described first feeding chamber 11 outer setting has the first cylinder 12 be connected with described first piston 13; Described first cylinder 12 is for driving described first piston 13 at described first feeding chamber 11 internal motion, and make described first feeding chamber 11 inside produce air pressure, the seal chamber raw material of described first feeding chamber 11 inside being pressed into described scraper body 1 is inner;
Described second feeding chamber 21 inside is provided with the second piston 23, and described second feeding chamber 21 outer setting has the second cylinder 22 be connected with described second piston 23; Described second cylinder 22 is for driving described second piston 23 at described second feeding chamber 21 internal motion, and make described second feeding chamber 21 inside produce air pressure, the seal chamber raw material of described second feeding chamber 21 inside being pressed into described scraper body 1 is inner.
Claims (10)
1. a doctor blade device, it is characterized in that, comprise: inside is provided with the scraper body of closed cavity, the closed cavity inside of described scraper body is provided with piston body, described scraper body is provided with the scraper body cylinder be connected with described piston body, described scraper body is provided with the turnover raw material mouth for making raw material pass in and out described scraper body closed cavity;
Described scraper body cylinder, for driving described piston body at the closed cavity internal motion of described scraper body, makes the closed cavity inside of described scraper body produce negative pressure, absorbs the raw material at described turnover raw material mouth place.
2. doctor blade device according to claim 1, is characterized in that,
Described scraper body is provided with feeding chamber;
Described feeding chamber is used for storing and supplying raw materials to described scraper body.
3. doctor blade device according to claim 2, is characterized in that,
Described feeding chamber comprises: two separate the first feeding chambers for taking up raw material and the second feeding chamber;
Described first feeding chamber inside is provided with first piston, and described first feeding chamber outer setting has the first cylinder be connected with described first piston;
Described first cylinder is for driving described first piston at described first feeding chamber internal motion, and make described first feeding chamber inside produce air pressure, the seal chamber raw material of described first feeding chamber inside being pressed into described scraper body is inner;
Described second feeding chamber inside is provided with the second piston, and described second feeding chamber outer setting has the second cylinder be connected with described second piston;
Described second cylinder is for driving described second piston at described second feeding chamber internal motion, and make described second feeding chamber inside produce air pressure, the seal chamber raw material of described second feeding chamber inside being pressed into described scraper body is inner.
4. doctor blade device according to claim 3, is characterized in that,
Described first feeding chamber inside is also provided with the first pressure sensor, described second feeding chamber inside is also provided with the second pressure sensor, and described scraper body is also provided with the control device be conducted with described first pressure sensor and described second pressure sensor;
Described first pressure sensor and described second pressure sensor are used for the internal pressure responding to described first feeding chamber and described second feeding chamber respectively;
Described control device is used for the internal pressure of described first feeding chamber and described second feeding chamber sensed respectively according to described first pressure sensor and described second pressure sensor, control described first cylinder and described second cylinder respectively to described first feeding chamber and described second feeding chamber pressurization, make to there is pressure differential between described first feeding chamber inside and described second feeding chamber inside, thus raw material can flow between the seal chamber of described first feeding chamber, described scraper body and described second feeding chamber.
5. doctor blade device according to claim 3, is characterized in that,
Described first feeding chamber and described second feeding chamber are respectively arranged with the first charging aperture and the second charging aperture;
Described first charging aperture and described second charging aperture are used for adding raw material to described first feeding chamber and described second feeding chamber inside.
6. a stencil printer, is characterized in that, comprising:
As doctor blade device and the printed steel mesh of claim 1 to 5 any one;
Described doctor blade device is provided with scraper, and the turnover raw material mouth of described doctor blade device is near described scraper;
Described scraper and described printed steel mesh fit tightly;
Described scraper is for striking off under described first cylinder and described second cylinder drive the effect of described first piston and described second piston respectively, seal chamber raw material in described first feeding chamber and described second feeding chamber being pressed into described scraper body is inner, and is extruded into the raw material on described printed steel mesh by described turnover raw material mouth.
7. stencil printer according to claim 6, is characterized in that,
Comprise: described first induction installation be connected with the control device conducting of described doctor blade device and the second induction installation;
Described first induction installation and described second induction installation are separately positioned on two ends of described doctor blade device movement travel repeatedly on described stencil printer;
Described first induction installation is used for when described doctor blade device is scraped to described first induction installation, trigger described first induction installation, make described control device control first piston described in described first air cylinder driven and be greater than the pressure of the second piston described in described second air cylinder driven in described second feeding chamber inside generation at the pressure that described first feeding chamber inside produces, thus the inner raw material of described first feeding chamber is extruded on described printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in described doctor blade device is clamp-oned described second feeding chamber;
Described second induction installation is used for when described doctor blade device is scraped to described second induction installation, trigger described second induction installation, make described control device control the second piston described in described second air cylinder driven and be greater than the pressure of first piston described in described first air cylinder driven in described first feeding chamber inside generation at the pressure that described second feeding chamber inside produces, thus the inner raw material of described second feeding chamber is extruded on described printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in doctor blade device is clamp-oned described first feeding chamber.
8. stencil printer according to claim 6, is characterized in that,
Described doctor blade device is also provided with seal bootr;
It is outside that described seal bootr cover is combined in described scraper, for described doctor blade device when non-operation, protects described scraper.
9. can give a system for stencil printer Automatic-feeding, it is characterized in that,
Comprise: stencil printer and feeder apparatus;
Described feeder apparatus comprises the level-sensing device that the feeding device that is communicated with the second charging aperture of the second feeding chamber with the first charging aperture of the first feeding chamber of described stencil printer respectively and the first feeding chamber and the second feeding chamber for detecting described stencil printer carry material quantity;
Described feeding device comprises Level control module;
Described Level control module is electrically connected with described level-sensing device, during for reaching setting threshold value when the first feeding chamber of described stencil printer or the material quantity of the second feeding chamber, described level-sensing device sends pulse signal to described Level control module, and described Level control module controls in the feed bin that described feeding device stops reaching described threshold value to described stencil printer reinforced according to described pulse signal.
10. a scraper method for stencil printer, is characterized in that, comprising:
S1: the scraper of doctor blade device and printed steel mesh are fitted tightly;
S2: when doctor blade device is scraped to the first induction installation, trigger the first induction installation, make control device control the first air cylinder driven first piston and be greater than the pressure of the second air cylinder driven second piston in the second feeding chamber inside generation at the pressure that the first feeding chamber inside produces, doctor blade device is made to put in raw material process scraping on printed steel mesh, the inner raw material of first feeding chamber is extruded on printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in the scraper body of doctor blade device is clamp-oned the second feeding chamber;
S3: when doctor blade device is scraped to the second induction installation, the scraper body air cylinder driven piston body of doctor blade device, at the closed cavity internal motion of scraper body, makes the closed cavity inside of scraper body produce negative pressure, absorbs the raw material at scraper body turnover raw material mouth place;
Simultaneously, make control device control the second air cylinder driven second piston and be greater than the pressure of the first air cylinder driven first piston in the first feeding chamber inside generation at the pressure that the second feeding chamber inside produces, doctor blade device is made to put in raw material process scraping on printed steel mesh, the inner raw material of second feeding chamber is extruded on printed steel mesh by the turnover raw material mouth of described doctor blade device, and raw material unnecessary in doctor blade device is clamp-oned the first feeding chamber;
S4: when doctor blade device is scraped to the first induction installation, the scraper body air cylinder driven piston body of doctor blade device is at the closed cavity internal motion of scraper body, the closed cavity inside of scraper body is made to produce negative pressure, absorb the raw material at scraper body turnover raw material mouth place, return S2 step to start to scrape and put raw material, until scraper process terminates.
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| CN201410687233.3A CN104494292B (en) | 2014-11-24 | 2014-11-24 | A kind of doctor blade device, stencil printer and its automatic feeding system and scraper method |
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| CN104494292B CN104494292B (en) | 2017-08-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112659724A (en) * | 2020-12-19 | 2021-04-16 | 支亮亮 | Screen printing equipment with liquid supply and scraper plate running synchronously |
| CN113103737A (en) * | 2021-03-17 | 2021-07-13 | 解燕君 | Printing mechanism for planar screen printing |
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|---|---|
| CN104494292B (en) | 2017-08-22 |
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