CN102744975B - Printing head - Google Patents
Printing head Download PDFInfo
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- CN102744975B CN102744975B CN201110102883.3A CN201110102883A CN102744975B CN 102744975 B CN102744975 B CN 102744975B CN 201110102883 A CN201110102883 A CN 201110102883A CN 102744975 B CN102744975 B CN 102744975B
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- guide board
- printhead
- needle stand
- fixed bar
- pin
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Abstract
The invention provides a printing head comprising a shell and a needle file assembly. The needle file assembly comprises a needle file, a needle guide plate and a fixing rod, wherein the needle guide plate extends upwards from the needle file, the fixing rod extends upwards from the needle guide plate, and the shell is sheathed on the fixing rod so as to be matched by virtue of a bolt. Therefore, according to the needle guide plate of the printing head provided by the invention, the needle guide plate extends upwards from the needle file, the fixing rod extends upwards from the needle guide plate, the shell is sheathed on the fixing rod so as to be matched by virtue of the bolt, so that the connection of the bolt is reliable, the needle file assembly and the shell can be assembled easily, the whole structure can not loosen, and meanwhile, the printing quality is stable.
Description
Technical field
The present invention relates to printer technology field, relate in particular to a kind of improvement of print head structure.
Background technology
In printer field, mainly contain ink-jet at present, laser, the printing type of temperature-sensitive and stylus printing Four types.And the advantage of first three kind is that noise is little, it is clear to print, and shortcoming is to print single-layer medium, and consumptive material is more expensive, and client's use cost is high.And the advantage of stylus printing technology is printable multilayer copy paper, consumptive material is cheap, and client's use cost is low, but it is larger that shortcoming is noise, but due to the advantage of the printable multilayer copy paper of impact printer, in finance, there is irreplaceable application widely in the fields such as tax revenue.
In stylus printing technology, printhead is a wherein the most key core component.By this core component, the ink of colour band can be impacted on medium, thereby complete print procedure; Conventionally printhead, according to the requirement of print quality, can be divided into 9 pins, 18 pins, 24 pins, 28 pins are even more, pin number number determined printhead impact precision and ability, wherein 9 stylus printers are imprinted on finance, tax revenue, the fields such as POS machine are most widely used; In these fields, require just the bill printed clear, complete, can not have great information dropout, thus for 9 pin printing head assemblies of printer core, must be reasonable in design, reliable in function, and have certain life-span could meet printing requirement.
Existing 9 needle type print heads, when the needle stand assembly to printhead and shell are mounted with, between them, adopt the mode of mutual snap fit to be fixed, but this fixed form is in producing assembling, easily cause the connection loosing of printhead integral body, thereby it is unstable or decline to affect print quality, simultaneously, during due to printing, the high-frequency of print needle impacts, and noise also easily increases.
Therefore, in sum, still there is defect in above-mentioned prior art, and the existing a kind of new printhead of design that needs, to overcome above-mentioned deficiency.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of simple, easy to operate, to have reduced cost printhead that assembles is provided.
The present invention realizes like this, a kind of printhead, comprise shell and needle stand assembly, described needle stand assembly comprises needle stand, guide board and fixed bar, described guide board extends upward from described needle stand, described fixed bar extends upward from described guide board, and described casing coordinates with bolt on described fixed bar.
Further, described needle stand, described guide board, described fixed bar are integrated injection moldings.
Further, described printhead also comprises a bracket, and described bracket is fixed on described needle stand by least two alignment pins.
Further, one first alignment pin is arranged on a side of described guide board, and one second alignment pin is arranged on the opposite side of described guide board, and the diameter of described the first alignment pin is greater than the diameter of described the second alignment pin.
Further, described guide board extends upward from the middle position of described needle stand, is provided with most pin holes on described guide board, and described pin hole is through to the lower surface of described needle stand from the upper surface of described guide board.
Further, described pin hole is for running through for print needle, and described pin hole is provided with 9, circle of section constitution of described pin hole.
Further, printhead also comprises that row is located at the majority coil block in described shell successively, and described coil block comprises coil and iron core, the silicon steel sheet that described iron core is a kind of U-shaped structure.
Further, described shell is an aluminium frame.
The present invention has following technique effect:
1) guide board of printhead of the present invention extends upward from described needle stand, described fixed bar extends upward from described guide board, described casing coordinates with bolt on described fixed bar, bolt connects more reliable, and make described needle stand assembly and described shell ratio be easier to assembling, can not cause integrally-built becoming flexible, make print quality more stable simultaneously.
2) diameter of the present invention's the first alignment pin is greater than the diameter of the second alignment pin, by these two alignment pins, described bracket is fixed on described needle stand, makes to assemble simple to operation, and workman there will not be maloperation.
3) described iron core adopts silicon steel material, has increased magnetic several times, thereby strengthened the magnetic attraction to print needle by silicon steel sheet.
4) the further described shell of the present invention is an aluminium frame, and wherein, shell adopts aluminum alloy materials to make, and while being convenient to the work of printhead interior loop, heat distributes.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of printhead in the embodiment of the present invention;
Fig. 2 is the structural representation of needle stand assembly and bracket in the embodiment of the present invention;
Fig. 3 is that in the embodiment of the present invention, printhead is assembled intact generalized section.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The basic functional principle of impact printer of the present invention: be to utilize machinery and circuit drives principle, make print needle shock colour band and print media, and then print dot matrix, then form character or figure by dot matrix and complete print out task.Printer is under on line state, by interface, receive printing control command, character printing or the graphic printing order that PC sends, again after the CPU processing by printer, from character library, find picture coding first address corresponding with this character or figure (when forward is printed) or terminal column address (while oppositely printing), find out so line by line and encode and be sent to print-head drive circuit, excitation printhead goes out impact printer and prints.
Referring to Fig. 1-Fig. 3, the embodiment of the present invention provides a kind of printhead 1 according to above-mentioned principle, comprise shell 13 and needle stand assembly 11, described needle stand assembly 11 comprises needle stand 111, guide board 112 and fixed bar 113, described guide board 112 extends upward from described needle stand 111, described fixed bar 113 extends upward from described guide board 112, and described shell 13 is enclosed within on described fixed bar 113 and coordinates with bolt.Like this, the guide board 112 of printhead 1 of the present invention extends upward from described needle stand 111, described fixed bar 113 extends upward from described guide board 112, described shell 13 is enclosed within on described fixed bar 113 and coordinates with bolt, bolt connects more reliable, and make described needle stand assembly 11 and described shell 13 and assemble than being easier to, can not cause integrally-built becoming flexible, make print quality more stable simultaneously.
Further, in specific embodiment structure of the present invention, described needle stand 111, described guide board 112, described fixed bar 113 is by integrated injection molding, wherein guide board 112 is cylindrical, fixed bar 113 is here for having the screw rod of certain length, also cylindrical, described bracket 12 is fixed on described needle stand 111 by two alignment pins, described bracket 12 is in order to form the cavity of a sealing, particularly, these two alignment pins are respectively the first alignment pin 114 and the second alignment pin 115, described the first alignment pin 114 is arranged on a side of described guide board 112, described the second alignment pin 115 is arranged on the opposite side of described guide board 112, like this so that described bracket 12 is fixed on described needle stand 111, the diameter of the first alignment pin 114 described here is greater than the diameter of described the second alignment pin 115, two alignment pins are distinct, make to assemble simple to operation, workman there will not be maloperation, bracket described in prior art 12 is integrated with described needle stand 111, the present embodiment is because Shooting Technique condition limits, can not realize described bracket 12 is shaped on described needle stand 111.
Please again referring to Fig. 2, in specific embodiment structure of the present invention, described guide board 112 extends upward from the middle position of described needle stand 111, on described guide board 112, be provided with 9 pin holes 1121, described pin hole 1121 is through to the lower surface of described needle stand 111 from the upper surface of described guide board 112, particularly, described pin hole 1121 is for running through for print needle 116, described pin hole 1121 is provided with 9, circle of section constitution of described pin hole 1121.
Further, the printhead 1 that printhead fixed structure is mounted with, also comprise that row is located at the majority coil block 14 in described shell 13 successively, described coil block 14 comprises coil 141 and iron core 142, the silicon steel sheet that described iron core 142 is a kind of U-shaped structure, by silicon steel sheet, increase magnetic several times, thereby strengthened the magnetic attraction to print needle 116; The frame structure that described shell 13 is made for aluminum alloy materials, when aluminum alloy materials is convenient to printhead 1 interior loop 141 work, heat distributes.
Further, as shown in Figure 1, described printhead 1 also comprises nut 15 and a pin arm component 16, described pin arm component 16 is assemblied on described shell 13, the fixing pin arm 161 of print needle in it, wherein, described nut 15 cooperatively interacts to fix described coil block 14 and described print needle with described fixed bar 113.
The foregoing is only preferred embodiment of the present invention, its structure is not limited to the above-mentioned shape of enumerating, and all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a printhead, comprise shell and needle stand assembly, it is characterized in that: described needle stand assembly comprises needle stand, guide board and fixed bar, and described guide board extends upward from described needle stand, described fixed bar extends upward from described guide board, and described casing coordinates with bolt on described fixed bar; Described guide board is cylindrical; Described fixed bar is the screw rod with certain length, and it is cylindrical; Described printhead also comprises nut and a pin arm component, and described pin arm component is assemblied on described shell, the fixing pin arm of print needle in it, and described nut and described fixed bar cooperatively interact;
Described needle stand, described guide board, described fixed bar are integrated injection moldings;
Described printhead also comprises a bracket, and described bracket is fixed on described needle stand by least two alignment pins, and described bracket is in order to form the cavity of a sealing, and described bracket is independent setting; One first alignment pin is arranged on a side of described guide board, and one second alignment pin is arranged on the opposite side of described guide board, and the diameter of described the first alignment pin is greater than the diameter of described the second alignment pin;
Described bracket offers for described fixed bar, the interspersed hole of described guide board.
2. a kind of printhead as claimed in claim 1, it is characterized in that: described guide board extends upward from the middle position of described needle stand, on described guide board, be provided with a plurality of pin holes, described pin hole is through to the lower surface of described needle stand from the upper surface of described guide board.
3. a kind of printhead as claimed in claim 2, is characterized in that: described pin hole is for running through for print needle, and described pin hole is provided with 9, circle of section constitution of described pin hole.
4. a kind of printhead as claimed in claim 1, is characterized in that: described printhead also comprises that row is located at a plurality of coil blocks in described shell successively, and described coil block comprises coil and iron core, the silicon steel sheet that described iron core is a kind of U-shaped structure.
5. a kind of printhead as claimed in claim 4, is characterized in that: described shell is an aluminium frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110102883.3A CN102744975B (en) | 2011-04-22 | 2011-04-22 | Printing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110102883.3A CN102744975B (en) | 2011-04-22 | 2011-04-22 | Printing head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102744975A CN102744975A (en) | 2012-10-24 |
| CN102744975B true CN102744975B (en) | 2014-12-03 |
Family
ID=47025625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110102883.3A Active CN102744975B (en) | 2011-04-22 | 2011-04-22 | Printing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102744975B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6513997B2 (en) * | 2000-07-17 | 2003-02-04 | Toshiba Tec Kabushiki Kaisha | Wire dot printer head and wire dot printer using the same |
| CN1165433C (en) * | 1997-06-09 | 2004-09-08 | 阿克西姆交易方案股份有限公司 | Dot matrix print head with unitary armature assembly and method of operation thereof |
| CN101242959A (en) * | 2005-08-09 | 2008-08-13 | 精工精密有限公司 | Print head of printer and gap spacer used for the print head |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3412855A1 (en) * | 1984-04-03 | 1985-10-03 | Mannesmann AG, 4000 Düsseldorf | MATRIX PRINT HEAD |
| JP2002316429A (en) * | 2001-04-18 | 2002-10-29 | Seiko Epson Corp | Recording head of recorder and recorder |
| JP4467894B2 (en) * | 2003-02-10 | 2010-05-26 | シチズンホールディングス株式会社 | Print head |
| JP4473021B2 (en) * | 2004-03-22 | 2010-06-02 | 東芝テック株式会社 | Nitride layer forming method, magnetic circuit forming member, armature, wire dot printer head, and wire dot printer |
| CN2923319Y (en) * | 2006-04-12 | 2007-07-18 | 新会江裕信息产业有限公司 | Needle-type printing head |
| CN202071512U (en) * | 2011-04-22 | 2011-12-14 | 多美科信息科技（深圳）有限公司 | Printing head |
-
2011
- 2011-04-22 CN CN201110102883.3A patent/CN102744975B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165433C (en) * | 1997-06-09 | 2004-09-08 | 阿克西姆交易方案股份有限公司 | Dot matrix print head with unitary armature assembly and method of operation thereof |
| US6513997B2 (en) * | 2000-07-17 | 2003-02-04 | Toshiba Tec Kabushiki Kaisha | Wire dot printer head and wire dot printer using the same |
| CN101242959A (en) * | 2005-08-09 | 2008-08-13 | 精工精密有限公司 | Print head of printer and gap spacer used for the print head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102744975A (en) | 2012-10-24 |
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Effective date of registration: 20180323 Address after: Shenzhen City, Baoan District Xixiang Street crane Chau Industrial Zone, eight North Road Industrial Park in Guangdong province 518000 Huajia 4 Building 6 floor Patentee after: Shenzhen win win innovation Polytron Technologies Inc Address before: 518000 Guangdong city of Shenzhen province Baoan District Xixiang Hezhou Village Hung Industrial Park 3 building, third floor Patentee before: Multi & Information Technology (Shenzhen) Co., Ltd. |
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| TR01 | Transfer of patent right |