CN204020246U - A kind of air supported head structure for impact printer - Google Patents
A kind of air supported head structure for impact printer Download PDFInfo
- Publication number
- CN204020246U CN204020246U CN201420460393.XU CN201420460393U CN204020246U CN 204020246 U CN204020246 U CN 204020246U CN 201420460393 U CN201420460393 U CN 201420460393U CN 204020246 U CN204020246 U CN 204020246U
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- China
- Prior art keywords
- torque spring
- air supported
- supported head
- angle bar
- printhead
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- Expired - Lifetime
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- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000003068 static effect Effects 0.000 claims abstract description 3
- 238000012423 maintenance Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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Abstract
The utility model provides a kind of air supported head structure for impact printer, comprises torque spring, air supported head, central shaft, guiding angle bar and limit stop post; Described torque spring is installed on the word car upper end of printhead and fixed cover is located on central shaft, described central shaft is fixedly connected with printer housing, the reaction force that the elastic force produced by torque spring distortion is produced when resisting printhead work, and word car rotates the gap driven between torque spring rotation adjustment lateral paper guide and type plate; Described limit stop post to be fixedly installed on word car and to carry out spacing in the rear of guiding angle bar to guiding angle bar; Described air supported head to be fixedly installed on torque spring and can to rotate with torque spring; The angle bar that will lead contacts with air supported head to be installed, by the elastic force effect of torque spring, and minimum clearance when restriction word car is static between printhead and type plate.
Description
Technical field
The utility model relates to a kind of air supported head structure for impact printer.
Background technology
The paper type that impact printer can adapt to is comparatively wide, as single-sheet stationery, connects page paper, single-part stationery, multilayer carbon paper, envelope, postcard, certificate, bill, and bankbook etc.Different paper has different thickness, even in same paper, also has different thickness, such as bankbook, and along with the change of the page, thickness also can have greatly changed.
Traditional printer relies on eccentric stiffener, and manual adjustments realizes the change in printhead gap, adapts to the paper of different-thickness.
So just wish a kind of printer that automatically can adapt to paper sheet thickness now.
In existing scheme, reached the change in the gap between printhead and marking roll around the rotation of word car guide shaft by word car.Directly contacted with paper by the paper guide being fixed on word car lower end, rely on the rotation realizing word car to lifting force of paper, drive printhead to move up, thus change the gap between printhead and marking roll, adapt to the paper of different-thickness.In this scheme, shell is provided with slide guide device, this device retrains by the pulling force of a pair spring, and can rotate, for carrying out slide-and-guide to rotating word car around an axle; This guider also arranges an inertia weights, for resisting the reaction force of printhead; This scheme also arranges a restraint guide rail, ensures, without under paper-like state, to avoid printhead directly to contact with marking roll, ensures a minimum clearance.(please refer to patent of invention in detail: 97102372.7)
In such scheme, complex structure, part is more, and cost is higher, keeps in repair loaded down with trivial details.
Summary of the invention
For prior art Problems existing, the utility model provides a kind of air supported head structure for impact printer, by installing torque spring, air supported head, limit stop post etc. in word car upper end, under controlling the duty without paper or thin paper, air supported head, under the effect of torque spring and limit stop post, ensures the minimum clearance between printhead and type plate; Paper is thick exceed this gap after, the torque spring that air supported head assembles is stressed, and air supported head to deflect displacement around central shaft, and the torsion of torque spring passes to word car; Single unit system structure is simple, and part is few, and cost is low, and installation and maintenance are convenient.
The technical solution of the utility model is: a kind of air supported head structure for impact printer, comprises torque spring, air supported head, central shaft, guiding angle bar and limit stop post; Described torque spring is installed on the word car upper end of printhead and fixed cover is located on central shaft, described central shaft is fixedly connected with printer housing, the reaction force that the elastic force produced by torque spring distortion is produced when resisting printhead work, and word car rotates the gap driven between torque spring rotation adjustment lateral paper guide and type plate;
Described limit stop post to be fixedly installed on word car and to carry out spacing in the rear of guiding angle bar to guiding angle bar; Described air supported head to be fixedly installed on torque spring and can to rotate with torque spring; The angle bar that will lead contacts with air supported head to be installed, by the elastic force effect of torque spring, and minimum clearance when restriction word car is static between printhead and type plate.
Further, described air supported head is arcuate structure.
Further, described guiding angle bar is arranged in " L " type, and an arm is horizontally disposed with, an arm is arranged vertically downward, with air supported head can contact be connected, inner side can contact be connected with limit stop post outside upright arm.
Further, described central shaft both sides and printer housing junction are respectively provided with " E " shape back-up ring.
The beneficial effects of the utility model are:
(1) by installing torque spring, air supported head, limit stop post etc. in word car upper end, under controlling the duty without paper or thin paper, air supported head under the effect of torque spring and limit stop post, the minimum clearance between guarantee printhead and type plate; Paper is thick exceed this gap after, the torque spring that air supported head assembles is stressed, and air supported head to deflect displacement around central shaft, and the torsion of torque spring passes to word car.
(2) in work, the arcwall face of air supported head rolls at guide angle iron surface, and torque spring deforms, and elastic force is passed to word car, this power is used to make paper guide be pressed on paper surface, reaction force when another effect is the work of opposing printhead.
(3) single unit system structure is simple, and part is few, and cost is low, and installation and maintenance are convenient.
(4) utilize E type back-up ring and central shaft to assemble, be beneficial to dismounting, greatly reduce cost of parts, assembly cost and the maintenance cost that may occur after sale.
Accompanying drawing explanation
Fig. 1 is the 3D partial view of the utility model device;
Fig. 2 is the side sectional view of printer shown in Fig. 1;
Fig. 3 is the front view of printer shown in Fig. 1;
Fig. 4 is the top view of printer shown in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
See Fig. 1,2,3,4, the utility model is a kind of impact printer using air supported head structure, and it comprises the body of the printer in existing manual adjustments gap and each component parts thereof.
The air supported head 1 of the present embodiment is designed to arcuate structure, and guiding angle bar 5 is designed l-shaped.During assembling, air supported head 1 and guiding angle bar 5 contact, and limit stop post 4 carries out spacing at the rear of L-type guiding angle bar 5.After air supported head component assembling, under the effect of elastic force, the madial wall of limit stop post 4 and guiding angle bar 5 contacts.Thus ensure the minimum clearance between the printhead 7 after assembling and type plate 10.What this gap was designed to be slightly less than printhead 7 goes out pin length, namely has certain needle force degree that goes out to ensure the clear of lettering, ensures that print needle is unlikely to stressed excessive and broken needle again.
After the gap of the present embodiment between above-mentioned printhead 7 and type plate 10 is adjusted, need to adjust the gap between lateral paper guide 6 and type plate 10.Lateral paper guide 6 is fixed on word car 9 by two screws 13, and before screw 13 is urgent, lateral paper guide 6 can freely move up and down, thus the gap between adjustment lateral paper guide 6 and type plate 10.This gap is designed to the thickness slightly larger than a common A4 paper, like this, when printhead 7 position is minimum, also has gap between lateral paper guide 6 and type plate 10, can ensure that a piece of paper can smooth and easyly pass through, paper jam phenomenon can not occur.
Gap in the present embodiment between printhead 7 and type plate 10 is greater than the gap between lateral paper guide 6 and type plate 10, like this, when the gap that the thickness of print paper 100 is greater than between lateral paper guide 6 and type plate 10, ensure to also have certain gap between printhead 7 and paper, this gap can ensure the life-span of the pin of lettering quality and printhead 7.
Therefore, use the utility model when printing, paper 100 sends into printer under the effect of front and back paper advance mechanism 11,12.If the thickness of paper 100 is less than the gap between lateral paper guide 6 and type plate 10, now printhead 7 is operated in the state of extreme lower position, the madial wall rolling friction of limit stop post 4 and guiding angle bar 5, torque spring in air supported head assembly produces minimal deformation, and the elastic force that this distortion produces is used for resisting the reaction force produced when printhead 7 works; If the thickness of paper 100 is greater than the gap between lateral paper guide 6 and type plate 10, lateral paper guide 6 can be pressed on the surface of paper 100 under the effect of air supported head assembly, along with the change of paper 100 thickness, lateral paper guide 6 can promote word car 9 and rotate around word car guide shaft 8, word car 9 can be servo-actuated with printhead 7, adapt to the varied in thickness of paper 100, and above-mentioned gap can ensure the life-span of lettering quality and printhead.When printhead 7 rotates along with word car 9, the roller surface of limit stop post 4 will be separated with the inner surface of guiding angle bar 5, torque spring now in air supported head assembly produces slightly bigger distortion, and elastic force is also along with increasing a little, and this elastic force makes lateral paper guide 6 can be pressed in the surface of paper 100.
As can be seen here, no matter how the thickness of printing paper changes, this utility model can both adapt to this change, and can ensure the rational gap between printhead and paper.Because air supported head and the such structure of lateral paper guide need too in the printer in common manual adjustments gap, so this target that realizes automatically adjusting to the thickness of paper only just can complete by increase air supported head assembly in fact.From this point, the application of this utility model, can realize by simply changing on the printer in common manual adjustments gap.In addition, this air supported head assembly utilizes E type back-up ring 3 and central shaft 2 to assemble, and is beneficial to dismounting, greatly reduces cost of parts, assembly cost and the maintenance cost that may occur after sale.
Claims (4)
1. for an air supported head structure for impact printer, it is characterized in that: comprise torque spring, air supported head, central shaft, guiding angle bar and limit stop post; Described torque spring is installed on the word car upper end of printhead and fixed cover is located on central shaft, described central shaft is fixedly connected with printer housing, the reaction force that the elastic force produced by torque spring distortion is produced when resisting printhead work, and word car rotates the gap driven between torque spring rotation adjustment lateral paper guide and type plate;
Described limit stop post to be fixedly installed on word car and to carry out spacing in the rear of guiding angle bar to guiding angle bar; Described air supported head to be fixedly installed on torque spring and can to rotate with torque spring; The angle bar that will lead contacts with air supported head to be installed, by the elastic force effect of torque spring, and minimum clearance when restriction word car is static between printhead and type plate.
2. a kind of air supported head structure for impact printer according to claim 1, is characterized in that: described air supported head is arcuate structure.
3. a kind of air supported head structure for impact printer according to claim 1, it is characterized in that: described guiding angle bar is arranged in " L " type, and an arm is horizontally disposed with, an arm is arranged vertically downward, with air supported head can contact be connected, inner side can contact be connected with limit stop post outside upright arm.
4. a kind of air supported head structure for impact printer according to claim 1, is characterized in that: described central shaft both sides and printer housing junction are respectively provided with " E " shape back-up ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460393.XU CN204020246U (en) | 2014-08-14 | 2014-08-14 | A kind of air supported head structure for impact printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460393.XU CN204020246U (en) | 2014-08-14 | 2014-08-14 | A kind of air supported head structure for impact printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204020246U true CN204020246U (en) | 2014-12-17 |
Family
ID=52060152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420460393.XU Expired - Lifetime CN204020246U (en) | 2014-08-14 | 2014-08-14 | A kind of air supported head structure for impact printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204020246U (en) |
-
2014
- 2014-08-14 CN CN201420460393.XU patent/CN204020246U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210046 Nanjing economic and Technological Development Zone, Xian Xian Road, No. 1, Jiangsu Patentee after: NANJING FUJITSU ELECTRONICS INFORMATION TECHNOLOGY CO.,LTD. Address before: 210046 Nanjing economic and Technological Development Zone, Xian Xian Road, No. 1, Jiangsu Patentee before: NANJING FUJITSU COMPUTER PRODUCTS CO.,LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141217 |
|
| CX01 | Expiry of patent term |