CN203401823U - Printing thermal head automatic positioning mechanism - Google Patents
Printing thermal head automatic positioning mechanism Download PDFInfo
- Publication number
- CN203401823U CN203401823U CN201320424230.1U CN201320424230U CN203401823U CN 203401823 U CN203401823 U CN 203401823U CN 201320424230 U CN201320424230 U CN 201320424230U CN 203401823 U CN203401823 U CN 203401823U
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- China
- Prior art keywords
- printing
- thermal head
- positioning mechanism
- rubber tire
- automatic positioning
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Abstract
The utility model discloses a printing thermal head automatic positioning mechanism, comprising a printing rubber wheel and a printing thermal head. An original position of the printing thermal head is behind the printing rubber wheel. When printing, through a driving structure, the printing thermal head presses towards the printing rubber wheel in a rotating manner. Two sides of the printing thermal head are provided with thermal head positioning blocks. Bulges of the thermal head positioning blocks are below a thermal printing line of the printing thermal head and is vertical to a plane where the thermal printing line is in. When the printing thermal head contacts the printing rubber wheel, the thermal head positioning blocks contact a bearing of the printing rubber wheel. The positioning mechanism is simple in structure, and simple and reliable in assembling, and cost is substantially reduced.
Description
Technical field
The utility model relates to thermal printer technical field, particularly relates to a kind of printing thermal head automatic positioning mechanism.
Background technology
The operation principle of thermal printer is that semiconductor heating element heater (being printing thermal head) is installed on printhead, and printing thermal head just can print the pattern needing after pressurizeing, calorify thermal printing paper, and its principle and heat-sensitive type facsimile machine are similar.Image is by heating, produces chemical reaction and generate in film.This thermal printer chemical reaction carries out at a certain temperature.
When using thermal-sensitive printer printing film, for the thermal printing line of guaranteeing whole printing thermal head when printing all the time with the vertical line keeping parallelism of printing rubber tire tangent line, contact-making surface must keep pressure even, realize printing thermal head and put on the pressure balance on film, thereby guarantee print quality.Existing dry image forming instrument adopts the mechanism being comprised of motor, rotating shaft, gear, pressure arm, sensor, pushes down two ends, printing thermal head back and make it to be applied to the pressure balance on film when printing.But existing mechanism structure is complicated, assemble loaded down with trivial detailsly, and cost is high.
Utility model content
The purpose of this utility model is to provide a kind of printing thermal head automatic positioning mechanism, for solving the uneven print quality that affects of thermal printer heat sensitive pressure when the printing film.
For solving the problems of the technologies described above, the utility model comprises prints rubber tire and printing thermal head, the initial position of described printing thermal head is positioned at described printing rubber tire back upper place, during printing, by drives structure, with rotation mode, press to printing rubber tire, described printing thermal head both sides are provided with thermal head locating piece; The ledge of described thermal head locating piece is lower than the thermal printing line of printing thermal head, and mutually vertical with thermal printing line place plane; When described printing thermal head contacts with printing rubber tire, the tangent jail of leaning on of bearings at both ends external diameter that the limit, upper end of described thermal head two ends locating piece is coaxial with printing rubber tire, make thermal head print wire automatically and printing rubber roller axis parallel, locate fast upper surface and distance vertical with thermal head print wire place plane for 9.5mm
As a kind of preferred version of the present utility model, described thermal head locating piece is arranged on printing thermal head both sides by location and installation piece and screw.
As a kind of preferred version of the present utility model, described drives structure comprises main shaft and hinge, and one end of described hinge is connected on main shaft, and the other end is connected to the back lower place of printing thermal head; One end of described main shaft is connected with the output of turbine and worm case, and the input of described turbine and worm case is connected with the output shaft of motor.
As a kind of preferred version of the present utility model, the other end of described hinge is connected to the centre position of the back lower place of printing thermal head.
As a kind of preferred version of the present utility model, the ledge of described thermal head locating piece is lower than the thermal printing line 9.5mm of printing thermal head.
Technique effect of the present utility model is to contact with printing rubber tire two side bearings by printing thermal head both sides locating piece, the thermal printing line that guarantees printing thermal head when printing all the time with the vertical line auto-paralleling of printing rubber tire tangent line, contact-making surface keeps pressure even, thereby does not affect print quality.In the middle of the utility model is positioned at printing thermal head applied pressure, thereby can guarantee that contact-making surface keeps pressure even.The utility model is simple in structure, assemble easy reliable, cost significantly reduces.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of drives structure in the utility model;
Fig. 3 is the schematic diagram that in the utility model, printing thermal head is positioned at initial position;
Fig. 4 is the schematic diagram that in the utility model, printing thermal head is positioned at print position.
The specific embodiment
As shown in Figure 1, printing thermal head automatic positioning mechanism of the present utility model, comprise and print rubber tire 1 and printing thermal head 2, the initial position of described printing thermal head 2 is positioned at described printing rubber tire 1 back upper place, during printing, by drives structure, with rotation mode, press to and print rubber tire 1, described printing thermal head 2 both sides are provided with thermal head locating piece 3, and wherein, described thermal head locating piece 3 can be arranged on printing thermal head 2 both sides by location and installation piece 4 and screw; The ledge of described thermal head locating piece 3 is lower than the thermal printing line of printing thermal head 2, and mutually vertical with thermal printing line place plane, and the ledge of described thermal head locating piece 3 is optimal distance during lower than the thermal printing line 9.5mm of printing thermal head 2; When described printing thermal head 2 contacts with printing rubber tire 1, described thermal head locating piece 3 contacts with the bearing 5 of printing rubber tire 1, and bearing 5 diameters are that 19mm is optimal distance.
As shown in Figure 2, described drives structure comprises main shaft 6 and hinge 7, and one end of described hinge 7 is connected on main shaft 6, and the other end is connected to the back lower place of printing thermal head 2; One end of described main shaft 6 is connected with the output of turbine and worm case 8, and the input of described turbine and worm case 8 is connected with the output shaft of motor 9.In order to make the printing thermal head 2 more balance of exerting pressure, the other end of described hinge 7 is connected to the centre position of the back lower place of printing thermal head 2, in the middle of now can guaranteeing thermal printing head 2 applied pressures to be positioned at, thereby can guarantee that contact-making surface keeps pressure even.
The utility model course of work is as follows: when needs are printed, send order to motor, electric machine rotation drives turbine and worm to make main shaft rotation, thereby drives printing thermal head with rotation mode, to press to printing rubber tire from initial position.When printing thermal head touches printing rubber tire, motor works on.Now the thermal head locating piece of a certain side of possibility has touched the bearing of printing on rubber tire, owing to exerting pressure in centre to printing thermal head, continue to exert pressure opposite side thermal head locating piece is also leaned against on the bearing of printing rubber tire, imposing certain pressure rear motor stops, to guarantee that the thermal printing line of thermal head is parallel to each other with the vertical line of printing rubber tire tangent line, it is even that now contact-making surface keeps pressure, thereby do not affect print quality.
By both sides of the present utility model locating piece, contact with printing rubber tire two side bearings, the thermal printing line that guarantees printing thermal head when printing all the time with the vertical line auto-paralleling of printing rubber tire tangent line, contact-making surface keeps pressure even, thereby does not affect print quality.In the middle of the utility model is positioned at printing thermal head applied pressure, thereby can guarantee that contact-making surface keeps pressure even.The utility model is simple in structure, assemble easy reliable, cost significantly reduces.
Below the preferred embodiment of the invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all modification being equal to or replacement under the prerequisite without prejudice to the invention spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (5)
1. a printing thermal head automatic positioning mechanism, comprise and print rubber tire and printing thermal head, the initial position of described printing thermal head is positioned at described printing rubber tire back upper place, during printing, by drives structure, with rotation mode, press to printing rubber tire, it is characterized in that, described printing thermal head both sides are provided with thermal head locating piece; The ledge of described thermal head locating piece is lower than the thermal printing line of printing thermal head, and mutually vertical with thermal printing line place plane; When described printing thermal head contacts with printing rubber tire, described thermal head locating piece contacts with the bearing of printing rubber tire.
2. printing thermal head automatic positioning mechanism as claimed in claim 1, is characterized in that, described thermal head locating piece is arranged on printing thermal head both sides by location and installation piece and screw.
3. printing thermal head automatic positioning mechanism as claimed in claim 1, is characterized in that, described drives structure comprises main shaft and hinge, and one end of described hinge is connected on main shaft, and the other end is connected to the back lower place of printing thermal head; One end of described main shaft is connected with the output of turbine and worm case, and the input of described turbine and worm case is connected with the output shaft of motor.
4. printing thermal head automatic positioning mechanism as claimed in claim 3, is characterized in that, the other end of described hinge is connected to the centre position of the back lower place of printing thermal head.
5. printing thermal head automatic positioning mechanism as claimed in claim 1, is characterized in that, the ledge of described thermal head locating piece is lower than the thermal printing line 9.5mm of printing thermal head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320424230.1U CN203401823U (en) | 2013-07-17 | 2013-07-17 | Printing thermal head automatic positioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320424230.1U CN203401823U (en) | 2013-07-17 | 2013-07-17 | Printing thermal head automatic positioning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203401823U true CN203401823U (en) | 2014-01-22 |
Family
ID=49937764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320424230.1U Expired - Fee Related CN203401823U (en) | 2013-07-17 | 2013-07-17 | Printing thermal head automatic positioning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203401823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109605945A (en) * | 2019-01-16 | 2019-04-12 | 曲阜市玉樵夫科技有限公司 | Engineering blueprint print unit, device and method |
-
2013
- 2013-07-17 CN CN201320424230.1U patent/CN203401823U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109605945A (en) * | 2019-01-16 | 2019-04-12 | 曲阜市玉樵夫科技有限公司 | Engineering blueprint print unit, device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 |