CN112848691B - Thermal printer core - Google Patents
Thermal printer core Download PDFInfo
- Publication number
- CN112848691B CN112848691B CN202110238076.8A CN202110238076A CN112848691B CN 112848691 B CN112848691 B CN 112848691B CN 202110238076 A CN202110238076 A CN 202110238076A CN 112848691 B CN112848691 B CN 112848691B
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- CN
- China
- Prior art keywords
- paper
- printing paper
- paper feeding
- feeding roller
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 230000000903 blocking effect Effects 0.000 claims description 22
- 238000005452 bending Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0045—Guides for printing material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/02—Rollers
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
The utility model provides a thermal printer core, includes frame and locates motor, drive gear group, rubber roll subassembly and the print head in the frame, its characterized in that the paper feed end of frame rotationally is equipped with the paper feed subassembly that can give the printing paper frictional force and make printing paper go on toward rubber roll subassembly direction, and this paper feed subassembly includes transmission shaft, drive shaft, paper feed roller and spring, and transmission shaft and drive shaft are clutch connection. When the printing paper just passes through the paper feeding roller, the paper feeding roller drives the printing paper to advance, and when the printing paper passes through the rubber roller assembly, the rubber roller assembly drives the printing paper to move forward, and the paper feeding roller is in a non-resistance passive state for the printing paper, so that the energy consumption can be reduced, and the phenomena of arching and wrinkling of the printing paper can be avoided.
Description
Technical Field
The present invention relates to a printing apparatus, and more particularly, to a thermal printer.
Background
The existing thermal printer core basically comprises a bracket, a motor, a transmission gear set, a rubber roller assembly and a printing head, wherein the motor, the transmission gear set, the rubber roller assembly and the printing head are arranged on the frame, the power input end of the transmission gear set is connected with a driving gear of the motor, the power output end of the transmission gear set is connected with a first input gear of the rubber roller assembly, the printing head is arranged close to the rubber roller assembly, the printing head is jointed with the rubber roller assembly by elastic pressure, the rubber roller assembly drives printing paper entering between the printing head and the rubber roller assembly to advance and execute printing work under the driving rotation of the motor, and paper feeding rollers are often arranged at paper feeding ends at present so as to provide friction force for the printing paper and smoothly enter a printing area, but if the speed of the paper feeding rollers is too high, the printing paper between the paper feeding rollers and the rubber roller assembly is easy to arch to generate wrinkles, and further the printing quality is affected; in addition, when the printing paper is driven to the end, a new paper needs to be manually put in, and the operations bring a lot of trouble to a user, and the paper is not easy to put in, so that various problems such as skew and change of printing content occur. Improvements are therefore needed.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a thermal printer core with less possibility of wrinkling of printing paper.
The second technical problem to be solved by the invention is to provide a thermal printer core which can be used for placing a plurality of printing papers at one time and printing one by one.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a thermal printer core, includes frame and locates motor, drive gear group, rubber roll subassembly and the print head in the frame, and the power input of aforementioned drive gear group is connected with the driving gear of motor, and power output is connected with the first input gear of rubber roll subassembly, and aforementioned print head is close to rubber roll subassembly and arranges, its characterized in that the paper feed end of frame rotationally is equipped with the paper feed subassembly that can give printing paper frictional force and make printing paper go on toward rubber roll subassembly direction, and this paper feed subassembly includes
The transmission shaft is rotatably arranged on the frame in parallel with the length direction of the rubber roller assembly, one end of the transmission shaft is provided with a first clutch tooth, the other end of the transmission shaft is arranged on a second input gear, and the second input gear is connected with the power output end of the transmission gear set;
A driving shaft which is arranged on the same axis direction with the driving shaft, one end of the driving shaft is provided with a second clutch tooth matched with the first clutch tooth, and the other end of the driving shaft can be rotatably arranged on the frame;
The paper feeding roller is elastically sleeved on the periphery of the driving shaft, the outer surface of the paper feeding roller can be contacted with printing paper to provide friction force, and the paper feeding roller can be rotatably arranged on the frame; and
The spring is sleeved at one end of the driving shaft and is positioned in the axial inner cavity of the paper feeding roller;
under the state that printing paper passes through the paper feeding roller, the first clutch teeth at the upper end of the transmission shaft are connected with the second clutch teeth of the driving shaft in a matched mode, and then the paper feeding roller is driven to rotate.
Preferably, the paper feeding roller may comprise a supporting sleeve and a roller sleeve arranged on the periphery of the supporting sleeve, and the spring is arranged in the supporting sleeve.
Further, the frame can be provided with the rubber roll support in a turnover way, and the rubber roll assembly can be rotatably arranged on the rubber roll support.
The inner side of the rubber roller support is provided with a spring sheet, one side of the spring sheet, which is close to the paper feeding roller, extends to form an abutting part capable of damping printing paper, and the abutting part is formed by obliquely bending the front end of the spring sheet and can be in surface contact with the outer surface of the paper feeding roller. Friction between the paper feed roller and the printing paper can be provided.
The invention solves the second technical problem by adopting the technical proposal that: the thermal printer core is characterized in that one side of the spring sheet, which is close to the paper feeding roller, is provided with an elastic blocking sheet, and a channel for single printing paper to pass through is formed between the front end surface of the blocking sheet and the outer surface of the paper feeding roller in a printing state. The blocking sheet is used for blocking the non-bottommost sheet from entering the printing area.
The abutting parts are arranged at the front ends of the spring pressing pieces at intervals, a bracket part is formed between the abutting parts at the front ends of the spring pressing pieces, and the blocking piece is arranged on the bracket part. The abutting portions arranged at intervals also have a certain guiding effect on the printing paper.
The front end face of the blocking sheet is obliquely arranged, so that the blocking sheet and the cylindrical surface at the outer end of the paper feeding roller form a gradually-reduced channel, and printing paper is conveyed conveniently.
Compared with the prior art, the invention has the advantages that: when the printing paper just passes through the paper feeding roller, the first clutch teeth at the upper end of the transmission shaft are matched and connected with the second clutch teeth of the driving shaft, so that the paper feeding roller is driven to rotate, when the printing paper passes through the rubber roller assembly, the rubber roller assembly drives the printing paper to move forwards, and the printing paper drives the paper feeding roller to rotate, because the rotating speed of the rubber roller assembly is greater than the speed of the paper feeding roller, the second clutch teeth are separated from the first clutch teeth, the phenomenon of arching and wrinkling of the printing paper can not occur, and meanwhile, the paper feeding roller is in a non-resistance passive state for the printing paper, so that the energy consumption can be reduced.
A connecting spring is sleeved between the driving shaft and the supporting sleeve, so that the driving shaft and the paper feeding rubber roller skid when the excessive load is damped, and the generation of excessive friction pulling force of the paper feeding rubber roller on paper is limited; the paper is prevented from being damaged under the condition that the paper is forcibly pulled out from the paper feeding roller and the paper is blocked by running.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment.
Fig. 2 is a schematic view of the structure of the embodiment after the rubber roll stand is removed.
Fig. 3 is a schematic view of the structure after the rubber roll stand and the connecting stand are taken out in the embodiment.
Fig. 4 is an exploded view of an embodiment.
Fig. 5 is a state diagram of the connection of the first joint and the second joint in fig. 4.
Fig. 6 is a transverse cross-sectional view of fig. 5.
Fig. 7 is an enlarged view of the spring sheet.
Fig. 8 is an enlarged cross-sectional view of an embodiment.
Fig. 9 is an enlarged view of a portion a in fig. 8.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1,2,3 and 4, the thermal printer core in this embodiment includes a frame 1, a motor 4 disposed on the frame 1, a rubber roller support 21, a transmission gear set 5, a rubber roller assembly 2, a print head 8 and a paper feeding assembly 3, where the frame 1 is U-shaped, and a connecting support 12 is further disposed in the middle of the frame 1, which can play a reinforcing role and is used for setting other detection components.
The power input end of the transmission gear set 5 is connected with the driving gear 41 of the motor 4, the first power output end is connected with the first input gear 22 of the rubber roller assembly 2, and the printing head 8 is arranged close to the rubber roller assembly 2.
The rubber roller support 21 can be arranged on the frame 1 in a turnover way, and the rubber roller assembly 2 can be rotatably arranged on the rubber roller support 21.
The paper feeding assembly 3 is rotatably provided at a paper feeding end of the frame 1, and can apply frictional force to the printing paper to make the printing paper proceed toward the rubber roller assembly 2, and the paper feeding assembly 3 includes a transmission shaft 31, a driving shaft 38, a paper feeding roller and a spring 37.
The transmission shaft 31 is rotatably disposed on the frame 1 in parallel with the length direction of the rubber roller assembly 2, one end of the transmission shaft 31 is provided with a first clutch tooth 331, specifically, as shown in fig. 5 and 6, one end of the transmission shaft 31 is provided with a first joint 33, the first joint is provided with a first clutch tooth 331, one end of the transmission shaft 31 is rotatably disposed on the bearing housing 11, and the other end is disposed on the supporting portion 15 of the frame. The other end of the transmission shaft 31 is provided with a second input gear 32, and the second input gear 32 is connected with a second power output end of the transmission gear set 5.
The driving shaft 38 and the driving shaft 31 are arranged in the same axial direction, one end of the driving shaft 38 is provided with a second clutch tooth 341 matched with the first clutch tooth 331, specifically, as shown in fig. 5 and 6, one end of the driving shaft 38 is provided with a second joint 34, and the second joint is provided with the second clutch tooth 341. The other end of the driving shaft is rotatably provided on the frame 1, and both ends of the driving shaft 38 are rotatably provided on the supporting portion 13 and the supporting portion 14 of the frame, respectively.
As shown in fig. 4, a paper feed roller is elastically fitted around the outer periphery of the driving shaft 38 and the outer surface is brought into contact with the printing paper to provide friction, and the paper feed roller is rotatably provided on the frame 1. The paper feeding roller in this embodiment includes a supporting sleeve 36 and a roller sleeve 35 disposed on the outer periphery of the supporting sleeve 36, and a spring 37 is disposed in the supporting sleeve 36.
The driving shaft 38 is sleeved with the spring 37, the supporting sleeve 36 is sleeved with the driving shaft 38 and the spring 37, the roller sleeve 35 is elastically sleeved and snapped on the supporting sleeve 36, the cylindrical outer surface of the roller sleeve 35 can be contacted with printing paper to provide friction force, and the roller sleeve 35 can be rotatably arranged on the frame 1; the spring 37 is sleeved on the driving shaft 38, the inner ring hole of the spring 37 is elastically meshed with the conical cylindrical surface of the driving shaft 38, the outer ring cylindrical surface of the spring 37 is elastically meshed with the cylindrical hole of the inner cavity of the supporting sleeve 36, and the driving shaft 38 drives the roller inlet sleeve 35 to rotate through the spring 37.
The transmission gear set in this embodiment includes a duplex gear 51, a duplex gear 52, a duplex gear 53, and a duplex gear 54, the duplex gear 52 and the duplex gear 54 are meshed, the duplex gear 52 and the duplex gear 51 are meshed, the duplex gear 53 and the duplex gear 51 are meshed, the driving gear 41 and the duplex gear 54 are meshed, the duplex gear 51 and the first input gear 21 are meshed, the duplex gear 46 and the second input gear 32 are meshed, and the rotational speed of the first input gear 21 is greater than the rotational speed of the second input gear 32, so that the driving speed of the rubber roller assembly to printing paper is greater than the driving speed of the paper feeding roller to printing paper.
As shown in fig. 8 and 9, the elastic sheet 6 is provided inside the rubber roller support 21, and an abutting portion 61 for damping the printing paper is extended from a side of the elastic sheet 6 close to the paper feed roller, and the abutting portion 61 is formed by obliquely bending a front end of the elastic sheet 6 and can be in surface contact with an outer surface of the paper feed roller. The elastic sheet 6 is provided with an elastic blocking sheet 7 on one side close to the paper feeding roller, and the blocking sheet 7 in the embodiment is made of soft rubber and has elasticity. In the printing state, a passage through which a single sheet of printing paper passes is formed between the front end surface of the blocking sheet 7 and the outer surface of the paper feed roller. As shown in fig. 4 and 7, the abutting portions 61 in this embodiment are a pair and are arranged at the front end of the elastic sheet 6 at intervals, the abutting portions 61 also have a guiding function on the printing paper, the front end of the elastic sheet 6 is located between the abutting portions 61 to form a bracket portion 62, and the blocking sheet 7 is disposed on the bracket portion 62. The front end face of the blocking sheet 7 is obliquely arranged, so that the blocking sheet and the cylindrical surface at the outer end of the paper feeding roller form a gradually-reduced channel, and printing paper is conveyed conveniently.
Referring to fig. 5,6, 8 and 9, in a state that the printing paper passes through the paper feeding roller, the first clutch teeth 331 at the upper end of the transmission shaft 31 are cooperatively connected with the second clutch teeth 341 of the driving shaft 38, so as to drive the paper feeding roller to rotate, in a state that the printing paper passes through the rubber roller assembly 2, the rubber roller assembly 2 drives the printing paper to move forward, and the printing paper drives the paper feeding roller to rotate, so that the second clutch teeth 341 are separated from the first clutch teeth 331, and separation is realized.
The paper feeding roller is driven by the first clutch teeth and the second clutch teeth in contact, and when the paper is moved to the rubber roller assembly and the printing head, the main driving force of the paper is the friction traction of the rubber roller assembly to the paper, and the traction speed of the paper feeding roller to the paper is not greater than the traction speed of the rubber roller assembly to the paper (if the paper feeding speed is greater than the friction traction of the rubber roller assembly to the paper), so that the traction effect of the paper feeding rubber to the paper is a side effect, and the transmission shaft and the driving shaft are in a separation state when the paper feeding roller is in a non-resistance passive state to reduce energy consumption.
As shown in fig. 8 and 9, the abutment 61 and the blocking piece 7 are brought into contact with the paper surface by elasticity to generate a relatively large frictional resistance, which will realize the travel blocking of the non-bottommost printing paper 10. The static friction force between the bottommost sheet 10a and the paper feeding roller is larger than the friction resistance of the printing paper support, the abutting part 61 and the blocking sheet 7 to the printing paper, and when only one printing paper is printed, the friction resistance of the abutting part 61 and the blocking sheet 7 to the printing paper does not influence the driving of the printing paper, so that the blocking design of the bottommost sheet is realized for a plurality of printing papers at the paper feeding end.
Claims (2)
1. The utility model provides a thermal printer core, includes frame (1) and locates motor (4), drive gear group (5), rubber roll subassembly (2) and print head (8) on frame (1), the power input of aforementioned drive gear group (5) is connected with driving gear (41) of motor (4), first power output is connected with first input gear (22) of rubber roll subassembly (2), aforementioned print head (8) are close to rubber roll subassembly (2) and arrange, characterized by the paper feed end of frame (1) rotationally is equipped with can give printing paper frictional force and make printing paper go on toward paper feed subassembly (3) of rubber roll subassembly (2) direction, and this paper feed subassembly (3) include
The transmission shaft (31) is rotatably arranged on the frame (1) in the length direction of the parallel rubber roller assembly (2), one end of the transmission shaft is provided with a first clutch gear (331), the other end of the transmission shaft is provided with a second input gear (32), and the second input gear (32) is connected with a second power output end of the transmission gear set (5);
A driving shaft (38) which is arranged on the same axis direction with the driving shaft (31), wherein one end of the driving shaft (38) is provided with a second clutch tooth (341) matched with the first clutch tooth (331), and the other end is rotatably arranged on the frame (1);
A paper feeding roller which is elastically sleeved on the periphery of the driving shaft (38) and the outer surface of which can be contacted with printing paper to provide friction force, and is rotatably arranged on the frame (1); and
A spring (37) which is sleeved at one end of the driving shaft (38) and is positioned in the axial inner cavity of the paper feeding roller;
The printing paper passes through the paper feeding roller, the first clutch teeth (331) at the upper end of the transmission shaft (31) are connected with the second clutch teeth (341) of the driving shaft (38) in a matched mode, the paper feeding roller is driven to rotate, the rubber roller assembly (2) drives the printing paper to move forwards in the state that the printing paper passes through the rubber roller assembly (2), the printing paper drives the paper feeding roller to rotate, and the second clutch teeth (341) are separated from the first clutch teeth (331);
The paper feeding roller comprises a supporting sleeve (36) and a roller sleeve (35) arranged on the periphery of the supporting sleeve (36), and the spring (37) is positioned in the supporting sleeve (36);
The rubber roller support (21) can be arranged on the frame (1) in a turnover way, and the rubber roller assembly (2) can be rotatably arranged on the rubber roller support (21);
The inside of the rubber roller bracket (21) is provided with a spring sheet (6), one side of the spring sheet (6) close to the paper feeding roller is extended with an abutting part (61) capable of damping printing paper, and the abutting part (61) is formed by obliquely bending the front end of the spring sheet (6) and can be in surface contact with the outer surface of the paper feeding roller;
an elastic blocking sheet (7) is arranged on one side of the elastic sheet (6) close to the paper feeding roller, and a channel for allowing a single piece of printing paper to pass through is formed between the front end surface of the blocking sheet (7) and the outer surface of the paper feeding roller in a printing state;
The abutting parts (61) are arranged at the front ends of the spring pressing pieces (6) at intervals, a bracket part (62) is formed between the abutting parts (61) at the front ends of the spring pressing pieces (6), and the blocking pieces (7) are arranged on the bracket part (62).
2. Thermal printer movement according to claim 1, characterized in that the front face of the blocking tab (7) is arranged inclined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238076.8A CN112848691B (en) | 2021-03-04 | 2021-03-04 | Thermal printer core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238076.8A CN112848691B (en) | 2021-03-04 | 2021-03-04 | Thermal printer core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112848691A CN112848691A (en) | 2021-05-28 |
| CN112848691B true CN112848691B (en) | 2024-07-23 |
Family
ID=75991505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110238076.8A Active CN112848691B (en) | 2021-03-04 | 2021-03-04 | Thermal printer core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112848691B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN218228379U (en) * | 2021-03-04 | 2023-01-06 | 宁波精芯科技有限公司 | Thermal printer core |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3003783B2 (en) * | 1997-11-13 | 2000-01-31 | 船井電機株式会社 | Paper feeder |
| KR101950185B1 (en) * | 2016-07-21 | 2019-02-22 | 디에스글로벌(주) | Photo printer |
| CN108556489B (en) * | 2018-03-01 | 2023-08-15 | 宁波精芯科技有限公司 | Thermal printer core |
| CN211518922U (en) * | 2019-09-30 | 2020-09-18 | 厦门汉印电子技术有限公司 | Thermal printer capable of printing stably |
-
2021
- 2021-03-04 CN CN202110238076.8A patent/CN112848691B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN218228379U (en) * | 2021-03-04 | 2023-01-06 | 宁波精芯科技有限公司 | Thermal printer core |
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| Publication number | Publication date |
|---|---|
| CN112848691A (en) | 2021-05-28 |
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