CN104476920B - A kind of high-precision micro industrial printer printhead - Google Patents

A kind of high-precision micro industrial printer printhead Download PDF

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Publication number
CN104476920B
CN104476920B CN201410755686.5A CN201410755686A CN104476920B CN 104476920 B CN104476920 B CN 104476920B CN 201410755686 A CN201410755686 A CN 201410755686A CN 104476920 B CN104476920 B CN 104476920B
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plinth
valve
core
cavity
nozzle
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CN104476920A (en
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赖家文
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FUZHOU JUZHONGXIN ELECTRONIC TECHNOLOGY Co Ltd
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FUZHOU JUZHONGXIN ELECTRONIC TECHNOLOGY Co Ltd
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Abstract

The invention discloses a kind of high-precision micro industrial printer printhead, RS232 interfaces pass through 9 core compound electric cable connection PCB circuit boards, circuit board connection is wrapped in the printhead coil on core valve, valve pocket is cased with outside core valve, one end of adjustment axis is placed in valve pocket, the other end of adjustment axis is close to special-shaped stud, special-shaped stud is threadedly arranged in fixed seat, sealed by rubber tie between valve pocket distal opening and adjustment axis, core valve leading head is tied with volute spring, core valve head is contacted with the jet hole of nozzle, main body base is fixed on case nose opening portion, nozzle is installed on the nozzle plate, main body base and nozzle plate and between form a cavity, cavity connects ink feed equipment with plastic tube by drawing liquid joint, it is long the beneficial effects of the invention are as follows print head longevity, do not allow fragile.

Description

A kind of high-precision micro industrial printer printhead
Technical field
The invention belongs to printer technology field, it is related to a kind of high-precision micro industrial printer printhead.
Background technology
Existing Industrial Printing head carries out print job under the environment at high corrosion, the severe scene of dust high, easily occurs Block, ink dot deflection, residual prepared Chinese ink is in phenomenons such as injection hole surfaces.And printhead is after valve opening, ink enters black chamber flowing Stroke is big, and motion valve element is long with valve pocket length of fit, and friction is big, thus consumes substantial amounts of energy, and the effective of printhead beats Print distance is also very short, and the probability for printing hole plug is very big, and the present invention is exactly in order to overcome above-mentioned problem, so as to ensure spray printing system System runs normal table in extremely rugged environment, reduces downtime.
The content of the invention
It is an object of the invention to provide a kind of high-precision micro industrial printer printhead, solve existing printer and disappear Energy consumption is big, and the problem being easily damaged.
The technical solution adopted in the present invention is to include shell, and shell rear portion is provided with RS232 interfaces, and RS232 interfaces lead to 9 core compound electric cable connection PCB circuit boards are crossed, PCB is fixed on the fixed seat and housing front of near middle in shell Main body base between, PCB connection below printhead coil, be wrapped in printhead coil power supply, printhead coil On core valve, valve pocket is cased with outside core valve, one end of adjustment axis is placed in the valve pocket of the rear end of core valve 8, the other end of adjustment axis is close to Special-shaped stud, special-shaped stud is threadedly arranged in fixed seat, by rubber knob between valve pocket distal opening and adjustment axis Band sealing, special-shaped stud is used for adjusting the displacement of core valve, and core valve leading head is tied with volute spring, volute spring two ends point Do not withstand on core valve head and main body base, core valve head is contacted with the jet hole of nozzle, when electromagnetic force drives core valve to be moved rearwards by, Compression volute spring, core valve afterbody withstood in adjustment axis, and core valve head leaves the segment distance of jet hole one, and now ink is from jet hole Spray, when electromagnetic force disappears, volute spring recovers elastic force, promotes core valve head contact nozzle mouthful, and jet hole sealing is prevented into ink Water is sprayed, and main body base is fixed on case nose opening portion, and nozzle is installed on the nozzle plate, main body base and nozzle plate and between formed One cavity, core valve head and volute spring are located in cavity, and cavity is connected by drawing liquid joint with plastic tube, and plastic tube passes through Hydraulic quick coupler inserts nozzle connection external ink supply equipment, and ambient pressure ink enters main body base by plastic tube to liquid joint is drawn In cavity, main body base is connected with nozzle plate, and poppet head is withstood into jet hole by the elastic force of volute spring, is allowed to seal, when When poppet head leaves jet hole under the action of a magnetic force, pressure ink is sprayed by jet hole, forms ink dot.
Further, the hydraulic quick coupler inserts nozzle includes plinth, and plinth inside is cavity, two ends are that the tubulose for stretching out is opened Mouthful, both ends open constitutes the passage for connecting with internal cavities, and plinth one end is stretched into the opening of plastic tube, the cavity of plinth Spring is inside placed with, plinth valve element stretches into contact spring from the other end of plinth, and plinth valve element stretches into plinth cavity Interior part is cased with sealing ring, and plinth valve core inside is that cavity connects outside inking equipment, cavities open in spool face and After sealing ring, when spring stretches naturally, valve element is stretched into part and is pushed out, sealing ring is in close contact the end of plinth Portion opening, such valve element and sealing ring will not flow into the open-ended sealing of plinth, the now ink in valve element cavity In the internal cavities of plinth, when inking is needed, valve element is inwardly pushed away by external equipment, compression spring, now sealing ring away from Plinth it is open-ended, the cavities open of plinth valve element is stretched into the internal cavities of plinth, and now ink will be filled into sky Chamber, flows into along plastic tube.
Further, the nozzle is used3*1.5 independence counter sink embedding gems.
Further, the special-shaped stud is connected interference fit with adjustment axis.
Further, the rubber tie and adjustment axis interference fit seal.
Further, the printhead coil is wrapped up by outside shield, and shield plays a part of to shield and strengthen magnetic field.
It is long the beneficial effects of the invention are as follows print head longevity, it is not easy to damage.
Brief description of the drawings
Fig. 1 is a kind of high-precision micro industrial printer printhead side structure schematic diagram of the invention;
Fig. 2 is overlooking the structure diagram of the present invention;
Fig. 3 is part A enlarged diagram in Fig. 1 of the present invention.
In figure, 1. shell, 2.RS232 interfaces, 3.9 core compound electric cables, 4.PCB circuit boards, 5. fixed seat, 6. main body Seat, 7. printhead coil, 8. core valve, 9. valve pocket, 10. adjustment axis, 11. special-shaped studs, 12. rubber ties, 13. volute springs, 14. nozzles, 15. nozzle plates, 16. draw liquid joint, and 17. plastic tubes, 18. hydraulic quick couplers insert nozzle, 1801. plinths, 1802. bullets Spring, 1803. plinth valve elements, 1804. sealing rings.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.
High-precision micro industrial printer printhead of the invention as depicted in figs. 1 and 2, including shell 1, the rear portion of shell 1 RS232 interfaces 2 are installed, RS232 interfaces 2 are fixed on by the connection PCB circuit board 4 of 9 core compound electric cable 3, PCB 4 In shell 1 between the main body base 6 of the fixed seat 5 of near middle and the front portion of shell 1, the printhead cluster below the connection of PCB 4 Circle 7, is powered to printhead coil 7, and printhead coil 7 is wrapped on core valve 8, and the instruction of Industrial Printing machine controller sends driving letter Number, signal is input into printhead coil 7 by 9 core compound electric cables 3, and the inductance coil of printhead coil 7 produces magnetic field, promotes Valve element 8 is moved.
Be cased with set 9 outside core valve 8, one end of adjustment axis 10 is placed in the inside of set 9 of the rear end of core valve 8, adjustment axis 10 it is another Special-shaped stud 11 is close at end, and special-shaped stud 11 is threadedly arranged in fixed seat 5, covers 9 distal openings and adjustment axis 10 Between sealed by rubber tie 12, special-shaped stud 11 is used for adjusting the displacement of core valve 8.Special-shaped stud 11 connects with adjustment axis 10 Connect interference fit.Rubber tie 12 and the interference fit seal of adjustment axis 10.It is illustrated in figure 3 the enlarged drawing of part A in Fig. 1, core The leading head of valve 8 is tied with volute spring 13, and the two ends of volute spring 13 withstand on the head of core valve 8 and main body base 6 respectively, 8, core valve Portion contacts with the jet hole of nozzle 14, when electromagnetic force drives core valve 8 to be moved rearwards by, compresses volute spring 13, and the afterbody of core valve 8 withstands on In adjustment axis 10, the head of core valve 8 leaves the segment distance of jet hole one, and now ink sprays from jet hole, when electromagnetic force disappears, taper Spring 13 recovers elastic force, promotes the head contact jet hole of core valve 8, prevents ink from spraying jet hole sealing;
Main body base 6 is fixed on the front end opening of shell 1, and nozzle 14 is arranged on nozzle plate 15, main body base 6 and nozzle plate 15 A cavity is formed between, the head of core valve 8 and volute spring 13 are located in cavity, and cavity is by drawing liquid joint 16 and plastic tube 17 connections, plastic tube 17 inserts nozzle 18 and connects external ink supply equipment by hydraulic quick coupler, and ambient pressure ink passes through plastic tube 17 to draw liquid joint 16 enter main body base 6 cavity in, main body base 6 is connected with nozzle plate 15, by the elastic force of volute spring 13 The head of valve element 8 is withstood into jet hole, is allowed to seal, the internal cavities of printhead is always maintained at the ink of pressure, when When the head of valve element 8 leaves jet hole under the action of a magnetic force, pressure ink is sprayed by jet hole, forms ink dot.Industry is beaten Print machine controller control printhead coil 7 is acted, and is allowed to form required character ink dot.Printhead coil 7 is by outside shield 22 Parcel, shield 22 plays a part of to shield and strengthen magnetic field.
Wherein, hydraulic quick coupler inserts nozzle 18 and can use ordinary couplings, and the hydraulic quick coupler of present invention design inserts nozzle 18 and is:Including joint Seat 1801, the inside of plinth 1801 is cavity, two ends are the tubular opening for stretching out, and both ends open constitutes what is connected with internal cavities Passage, one end of plinth 1801 is stretched into the opening of plastic tube 17, and spring 1802, joint are placed with the cavity of plinth 1801 Seat valve core 1803 stretches into contact spring 1802 from the other end of plinth 1801, and it is empty that plinth valve element 1803 stretches into plinth 1801 Part in chamber is cased with sealing ring 1804, and the inside of plinth valve element 1803 outside inking equipment for cavity is connected, cavities open exists The surface of valve element 1803 and after sealing ring 1804,
When spring 1802 stretches naturally, valve element 1803 is stretched into part and is pushed out, sealing ring 1804 is in close contact joint Seat 1801 it is open-ended, such valve element 1803 and sealing ring 1804 by the open-ended sealing of plinth 1801, now valve element Ink in 1803 cavitys will not be flowed into the internal cavities of plinth 1801, and when inking is needed, valve element 1803 is outside Equipment is inwardly pushed away, compression spring 1802, and now sealing ring 1804 is away from the open-ended of plinth 1801, plinth valve element 1803 Cavities open stretch into the internal cavities of plinth 1801, now ink will be filled into cavity, is flowed into along plastic tube 17.
In the present invention, nozzle 14 is used3*1.5 independence counter sink embedding gems.The settable multiple of printhead of the invention, Only need to set corresponding equipment.
Advantages of the present invention mainly have it is following some:
1. the advantage of volute spring 13:Domestic other code spraying machine shower nozzle back-moving springs use cylindrical helical spring, hold Easily failure, cylindrical spring and valve element are that gap coordinates, cylindrical spring and valve element not coaxial eccentric, cause effective energy to be lost, and are done Idle work.Shower nozzle volute spring 13 of the present invention is designed using oval section volute spring, and volute spring 13 makes valve opening quicker, is resetted It is more rapid accurate.Be conducive to eliminating and relax resonance, compact conformation, good stability.Small end is more steady with the major diameter fit of core valve 8 Close, big end is accurately fixed on main body base 6, and without hanging phenomenon, each task is effectively ensured and is accurate to position, not skewed, Greatly reduce energy loss, reset accurately and reliably, stability is higher.
2. effectively shorten hron spacing, other sprinkler core valve total lengths all in more than 30mm, hron spacing all in 7-15mm, Motion parts coordinate more than section 20mm, and the big energy loss of frictional resistance is serious.The overall length 13mm of the design core valve 8, hron spacing can Be as short as within 3.5mm, motion coordinates the section can be as short as within 10mm, effectively reduces frictional resistance, reduces energy loss, reduce by Cause rigidity too poor in cantilever is oversize, easily eccentric, cantilever oversize equilibrium condition stability is poor, outstanding in the transmission of identical load Arm configuration axle easier generation mechanical fatigue more long, this design makes motion sensitiveer, precisely, and cannot be easily caused damage.
3. sealing, existing nozzle set is sealed with adjustment axis using wide arc gap gluing sealing or O-ring, gluing sealing regulation Stroke of valve is bothered, easy ink leak during O-ring sealed-regulating valve stroke.Valve pocket of the present invention 9 is matched somebody with somebody with adjustment axis 10 using minim gap Close, additional overall rubber tie 12, by rubber tie 12 and the interference fit seal of adjustment axis 10, good airproof performance and easy to adjust, Safeguard more convenient.
4. solenoid travel adjustment:Existing shower nozzle seals threaded adjusting with O-ring, and O-ring is easily caused during regulation together Rotate, be allowed to damaged leakage.Another to use fixed spool cementation in sleeve pipe, by adjusting sleeve pipe, sleeve pipe is threadedly coupled gluing with ink tank, because Sleeve pipe is thin-wall part, wall thickness 0.2mm at screw thread, easily revolves disconnected sleeve pipe during adjustment, or causes sleeve pipe valve element viscose to come off leakage.With Upper structure all needs professional tool to adjust.The present invention is connected interference fit using special-shaped stud 11 with adjustment axis 10, by fixed seat 5 Support, special-shaped stud 11 rotates and forms axial movement during adjustment, the problem without sealing and leakage, the more flexible side of adjustment Just, it is that can adjust without specific purpose tool.
5. the service life of jewel nozzles 14 is longer, and ink dot fracture is more perfect, and gemstone surface is difficult to accumulate ink and makes spray printing ink dot More mellow and fuller exquisiteness.Jewel is small to the adhesion of liquid, is not easily blocked, and metal is big to the adhesion of liquid, easily blocking microporous.
6. core valve 8 uses high-quality magnetic property material with adjustment axis 10, and high saturated magnetic induction, low residual magnetic induction is strong Degree, and it is corrosion-resistant.Can moment upper magnetic moment demagnetization, the features such as remanent magnetism is small.Printhead core valve work about 100,000,000 in the market It is secondary.The present invention may be up to the work of 1,000,000,000 times using the core valve 8 of high-quality magnetic property material, and fast response time meets per minute 300 The operating rate of rice.
7. the quantity of print-head nozzle 14 can an arbitrarily hole combination.Only need to set location, this hair on nozzle plate 15 Bright compact overall structure, connects firm, antidetonation drop resistant, small volume and less weight.
The above is only, to better embodiment of the invention, any formal limit not to be made to the present invention System, every any simple modification made to embodiment of above according to technical spirit of the invention, equivalent variations and modification, Belong in the range of technical solution of the present invention.

Claims (6)

1. a kind of high-precision micro industrial printer printhead, it is characterised in that:Including shell (1), shell (1) rear portion is provided with RS232 interfaces (2), RS232 interfaces (2) are by 9 core compound electric cable (3) connection PCBs circuit board (4), and PCB (4) is solid It is scheduled between the fixed seat (5) of shell (1) interior near middle and the anterior main body base (6) of shell (1), PCB (4) connection The printhead coil (7) of lower section, gives printhead coil (7) power supply, and printhead coil (7) is wrapped on core valve (8), core valve (8) Outside is cased with valve pocket (9), and one end of adjustment axis (10), the other end of adjustment axis (10) are placed in the valve pocket (9) of core valve (8) rear end Be close to special-shaped stud (11), special-shaped stud (11) is threadedly arranged in fixed seat (5), valve pocket (9) distal opening with Sealed by rubber tie (12) between adjustment axis (10), special-shaped stud (11) is for adjusting the displacement of core valve (8), core valve (8) leading head is tied with volute spring (13), and volute spring (13) two ends withstand on core valve (8) head and main body base (6) respectively, Core valve (8) head is contacted with the jet hole of nozzle (14), when electromagnetic force drives core valve (8) to be moved rearwards by, compresses volute spring (13), core valve (8) afterbody is withstood in adjustment axis (10), and core valve (8) head leaves the segment distance of jet hole one, and now ink is from nozzle Mouth sprays, and when electromagnetic force disappears, volute spring (13) recovers elastic force, promotes core valve (8) head contact jet hole, and jet hole is close Envelope prevents ink from spraying, and main body base (6) is fixed on shell (1) front end opening, and nozzle (14) is main on nozzle plate (15) Between housing (6) and nozzle plate (15) formed a cavity, core valve (8) head and volute spring (13) in cavity, cavity Connected with plastic tube (17) by drawing liquid joint (16), plastic tube (17) inserts nozzle (18) and connects external ink confession by hydraulic quick coupler Equipment is answered, ambient pressure ink passes through in plastic tube (17) to the cavity for drawing liquid joint (16) entrance main body base (6), main body base (6) it is connected with nozzle plate (15), core valve (8) head is withstood by jet hole by the elastic force of volute spring (13), is allowed to seal, when When core valve (8) head leaves jet hole under the action of a magnetic force, pressure ink is sprayed by jet hole, forms ink dot.
2. according to a kind of high-precision micro industrial printer printhead described in claim 1, it is characterised in that:The hydraulic quick coupler Inserting nozzle (18) includes plinth (1801), and plinth (1801) is internal for cavity, two ends are the tubular opening for stretching out, both ends open The passage for connecting is constituted with internal cavities, plinth (1801) one end is stretched into the opening of plastic tube (17), plinth (1801) Cavity in be placed with spring (1802), plinth valve element (1803) stretches into contact spring from the other end of plinth (1801) (1802) part that, plinth valve element (1803) is stretched into plinth (1801) cavity is cased with sealing ring (1804), joint seat valve For cavity connects outside inking equipment inside core (1803), cavities open is on plinth valve element (1803) surface and positioned at sealing ring (1804) after, when spring (1802) stretches naturally, plinth valve element (1803) is stretched into part and is pushed out, make sealing ring (1804) it is in close contact the open-ended of plinth (1801), such plinth valve element (1803) and sealing ring (1804) are by joint Seat (1801) open-ended sealing, now the ink in plinth valve element (1803) cavity will not flow into plinth (1801) Internal cavities in, when inking is needed, plinth valve element (1803) is inwardly pushed away by external equipment, compression spring (1802), this When sealing ring (1804) away from the open-ended of plinth (1801), the cavities open of plinth valve element (1803) stretches into plinth (1801) in internal cavities, now ink will be filled into cavity, is flowed into along plastic tube (17).
3. according to a kind of high-precision micro industrial printer printhead described in claim 1, it is characterised in that:The nozzle (14) Using φ 3*1.5 independence counter sink embedding gems.
4. according to a kind of high-precision micro industrial printer printhead described in claim 1, it is characterised in that:The special-shaped stud (11) it is connected interference fit with adjustment axis (10).
5. according to a kind of high-precision micro industrial printer printhead described in claim 1, it is characterised in that:The rubber tie (12) with adjustment axis (10) interference fit seal.
6. according to a kind of high-precision micro industrial printer printhead described in claim 1, it is characterised in that:The printhead cluster Circle (7) is wrapped up by outside shield (22), and shield (22) plays a part of to shield and strengthen magnetic field.
CN201410755686.5A 2014-12-10 2014-12-10 A kind of high-precision micro industrial printer printhead Active CN104476920B (en)

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Application Number Priority Date Filing Date Title
CN201410755686.5A CN104476920B (en) 2014-12-10 2014-12-10 A kind of high-precision micro industrial printer printhead

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Application Number Priority Date Filing Date Title
CN201410755686.5A CN104476920B (en) 2014-12-10 2014-12-10 A kind of high-precision micro industrial printer printhead

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CN104476920A CN104476920A (en) 2015-04-01
CN104476920B true CN104476920B (en) 2017-06-20

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201141494Y (en) * 2007-12-05 2008-10-29 东风精密铸造有限公司 Fast socket tube joint
CN100538145C (en) * 2008-04-23 2009-09-09 宁波中迪机械有限公司 Self-sealing joint
JP5790202B2 (en) * 2011-06-28 2015-10-07 株式会社リコー Image forming apparatus
CN203381345U (en) * 2013-06-14 2014-01-08 北京康迪电子设备有限公司 Jetting head of large-character ink jet printer
CN203697705U (en) * 2014-01-23 2014-07-09 广州易达包装设备有限公司 Spray nozzle for non-contact type large character inkjet printer
CN204340387U (en) * 2014-12-10 2015-05-20 福州聚众鑫电子科技有限公司 A kind of high-precision micro industrial printer printhead

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