CN212372981U - Thermal printer - Google Patents
Thermal printer Download PDFInfo
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- CN212372981U CN212372981U CN202020552117.1U CN202020552117U CN212372981U CN 212372981 U CN212372981 U CN 212372981U CN 202020552117 U CN202020552117 U CN 202020552117U CN 212372981 U CN212372981 U CN 212372981U
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- gear
- base frame
- gear set
- transmission
- transmission gear
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Abstract
A thermal printer comprises a base frame, a gear cover and a transmission gear set, wherein the gear cover is arranged on one side of the base frame, and the transmission gear set is arranged in an installation area between the gear cover and the base frame; the transmission gear set is characterized in that the base frame is made of metal alloy materials, a plurality of gear shafts are formed on one side of the base frame, and gears on the transmission gear set are arranged on the gear shafts and can rotate. The gear shaft integrated into one piece is on alloy material's bed frame, and the gear shaft accumulative error is less on the bed frame, and the transmission precision improves, and the bulk strength increases, difficult rupture or damage.
Description
Technical Field
The utility model relates to a thermal printer is applied to cash dispenser, supermarket and receives the bill of cash desk and prints.
Background
Thermal printers are mostly arranged on automatic teller machines of banks and cash registers of supermarkets and are used for printing transaction receipts or tickets. A thermal printer generally includes a casing, a core is installed in the casing, and the core includes a printhead assembly, a base frame, and a paper cutter installed on one side of the base frame and the printhead assembly. A paper feeding passage is formed between the print head assembly and the base frame, and the thermal printing paper passes through the paper feeding passage.
A rubber roller is installed at the upper end of a base frame of the thermal printer core, a printing motor is arranged in the base frame, and the printing motor drives the rubber roller to rotate through a transmission gear set. The printing head assembly comprises a printing head and a thermosensitive sheet, the thermosensitive sheet is arranged opposite to the rubber roller, and the thermosensitive sheet heats the thermosensitive printing paper to form characters and patterns.
At present, bed frame one side is equipped with the gear cover, and the inboard shaping of gear cover has a plurality of gear shafts, and the drive gear group that comprises a plurality of gears is located on the gear shaft and is located the installation region between gear cover and the bed frame in, and this kind of design exists following not enoughly: firstly, the base frame is made of common plastic materials, and the strength and the heat conductivity are poor; secondly, when the gear cover is assembled, the positions of the corresponding holes of the gear shaft and the base frame need to be aligned, the requirement on the assembling precision of the gear cover is high, the accumulated error of a plurality of gear shafts is large, and the transmission precision of the transmission gear set and the output gear on the output shaft of the printing motor is difficult to guarantee. There is a need for improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the first technical problem that a thermal printer that drive gear group and the epaxial driving gear transmission precision of printing motor output can be guaranteed is provided to foretell technical current situation.
The second technical problem to be solved by the present invention is to provide a thermal printer with good thermal conductivity.
The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a thermal printer includes
A base frame;
a gear cover arranged on one side of the base frame, and
the transmission gear set is arranged in the mounting area between the gear cover and the base frame;
the transmission gear set is characterized in that the base frame is made of metal alloy materials, a plurality of gear shafts are formed on one side of the base frame, and gears on the transmission gear set are arranged on the gear shafts and can rotate.
Furthermore, the gear cover is provided with a mounting hole for the gear shaft to be arranged.
The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the base frame is provided with a printing motor, an output shaft of the printing motor is provided with an output gear, and the output gear is in meshing transmission connection with a power input end of the transmission gear set. The heat of the motor is transferred to the base frame made of alloy materials through the metal shell, and the purpose of rapid heat dissipation is achieved.
Further, a mounting arm is arranged on one side of the base frame, the printing motor is arranged on the inner side of the mounting arm, the shell of the printing motor is tightly attached to the inner side face of the mounting arm, and the transmission gear set is arranged on the outer side of the mounting arm.
Compared with the prior art, the utility model has the advantages of: the gear shaft integrated into one piece is on alloy material's bed frame, and the gear shaft accumulative error is less on the bed frame, and the transmission precision improves, and the bulk strength increases, difficult rupture or damage.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment.
Fig. 2 is an exploded view of the embodiment.
Fig. 3 is an exploded assembly view of the base portion from another perspective.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, 2 and 3, the thermal printer in this embodiment includes a base frame 1, a gear cover 3, a first transmission gear set 5, a second transmission gear set 5a, a print head assembly 7, a print motor 4, a driving motor 4a, a support 2 and a rubber roller 6 disposed on the support 2, wherein an input gear 61 is disposed at a head of the rubber roller 6.
The base frame 1 is made of metal alloy, zinc alloy can be specifically adopted, a first installation arm 12 and a second installation arm 12a are respectively formed on two sides of the base frame 1, a plurality of gear shafts 11 are formed on one side of the first installation arm 12, a plurality of gear shafts 11a are also formed on one side of the second installation arm 12a, and the first gear cover 3 and the second gear cover 3a are respectively arranged on two sides of the base frame 1 and can be fixed through screws. The first mounting arm 12 and the second mounting arm 12a are formed with a hook 14, and after the support 2 is assembled with the base frame 1, two ends of the rubber roller 6 are located on the hook 14.
The first transmission gear set 5 is arranged in an installation area between the first gear cover 3 and the first installation arm 12; the second transmission gear set is arranged in the mounting area between the second gear cover 3a and the second mounting arm 12 a; the gears of the first transmission gear set 5 and the gears of the second transmission gear set 5a are respectively arranged on respective gear shafts and can rotate. The first gear cover 3 is provided with a mounting hole 31 for the gear shaft 11 to be disposed.
The bracket 2 is detachably connected with the base frame 1 and can be separated by a wrench 81.
The printing motor 4 is arranged on the inner side of the first mounting arm 12, an output gear 41 is arranged on an output shaft of the printing motor 4, and the output gear 41 is in meshing transmission connection with a power input end of the first transmission gear set 5. The power output end of the first transmission gear set 5 is in meshed transmission with the input gear 61 on the rubber roller 6. The printing motor 4 is in transmission connection with the rubber roller 6 through a first transmission gear set 5.
The driving motor 4a is arranged on the inner side of the second mounting arm, a driving output gear 41a is arranged on an output shaft of the driving motor 4a, the driving output gear 41a drives a second transmission gear set 5a, the second transmission gear set 5a is in meshing transmission with a rack part 71a of the tool rest 7a, and the movable tool 6a is arranged on the tool rest 7 a. Thereby driving the movable blade 6a to cut.
The casing of the printing motor 4 is closely attached to the inner side surface of the first mounting arm 12, and the casing of the driving motor 4a is closely attached to the inner side surface of the second mounting arm 12 a. Because bed frame 1 adopts the alloy material, the heat of print motor 4 and driving motor 4a can be passed through bed frame 1 heat conduction rapidly, realizes dispelling the heat fast.
The gear shaft 11 is integrally formed on the base frame 1 made of alloy materials, the accumulated error of the gear shaft 11 on the base frame 1 is small, the transmission precision of the gear set is improved, the overall strength is increased, and the clamping hook 14 is not easy to break or damage. And because the shells of the printing motor 4 and the driving motor 4a are clung to the first mounting arm 12 and the second mounting arm 12a, the efficient heat dissipation is facilitated during heating, the heating and temperature rise of the printer are restrained, and the problems of performance reduction and damage of the printing motor caused by overhigh temperature can be avoided.
Claims (4)
1. A thermal printer includes
A base frame;
a gear cover arranged on one side of the base frame, and
the transmission gear set is arranged in the mounting area between the gear cover and the base frame;
the transmission gear set is characterized in that the base frame is made of metal alloy materials, a plurality of gear shafts are formed on one side of the base frame, and gears on the transmission gear set are arranged on the gear shafts and can rotate.
2. The thermal printer as claimed in claim 1, wherein said gear cover defines a mounting hole for the gear shaft.
3. The thermal printer according to claim 1, wherein the base frame is provided with a print motor, an output shaft of the print motor is provided with an output gear, and the output gear is in meshing transmission connection with the power input end of the transmission gear set.
4. The thermal printer of claim 3, wherein the base frame has a mounting arm on one side thereof, the print motor is disposed inside the mounting arm, and the print motor has a housing closely attached to an inner side surface of the mounting arm, and the transmission gear set is disposed outside the mounting arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020552117.1U CN212372981U (en) | 2020-04-15 | 2020-04-15 | Thermal printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020552117.1U CN212372981U (en) | 2020-04-15 | 2020-04-15 | Thermal printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212372981U true CN212372981U (en) | 2021-01-19 |
Family
ID=74160220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020552117.1U Active CN212372981U (en) | 2020-04-15 | 2020-04-15 | Thermal printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212372981U (en) |
-
2020
- 2020-04-15 CN CN202020552117.1U patent/CN212372981U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |