CN115230341B

CN115230341B - Label base paper winding mechanism and printer with same

Info

Publication number: CN115230341B
Application number: CN202210970034.8A
Authority: CN
Inventors: 李标; 阙银龙
Original assignee: Hangzhou Biaojia Digital Technology Co ltd
Current assignee: Hangzhou Biaojia Digital Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2024-04-09
Anticipated expiration: 2042-08-12
Also published as: CN115230341A

Abstract

The invention discloses a label base paper winding mechanism and a printer with the same, wherein the label base paper winding mechanism comprises a label winding shaft which is arranged on a rack in a pivotable manner and a first damping unit which is arranged on the label winding shaft and can transmit power of a driving unit to the label winding shaft so as to drive the label winding shaft to move around the pivot. Or the label base paper winding mechanism comprises a driving unit, a first damping unit and a label winding shaft which is pivotably arranged on the frame; the driving unit drives the first damping unit to move and drives the label winding shaft to pivotally move through friction force exerted on the label winding shaft by the first damping unit; or the driving unit drives the first damping unit and the label winding shaft to pivotally move through the friction force exerted on the first damping unit by the driving unit. Therefore, the purpose of adjusting the motion state of the label winding shaft according to the tension of the label tape can be achieved through the label base paper winding mechanism, and the label tape is prevented from being broken due to overlarge tension.

Description

Label base paper winding mechanism and printer with same

Technical Field

The invention relates to the technical field of printing equipment, in particular to a label base paper winding mechanism and a printer with the label base paper winding mechanism.

Background

In an automated label printer, a label unwind mechanism driven by a drive device and a label base stock wind-up mechanism driven by a drive device are typically included. The label unreeling mechanism of the label printer is matched with the label base paper reeling mechanism, label paper to be printed is issued to a printing position, and the label base paper reeling mechanism is used for reeling the label base paper from which the printed label is taken off.

However, since the diameter of the base paper wound on the label winding shaft of the label base paper winding mechanism is larger and larger in the use process, if the label winding shaft is driven by the driving device to maintain a constant rotation speed, the speed of winding the label base paper on the label winding shaft is faster and faster, and then the label base paper is pulled apart or the label on the label base paper is wound on the label winding shaft without being taken down.

Meanwhile, in order to ensure the printing quality of the carbon tape, the carbon tape winding shaft is generally arranged to be capable of moving between a first position and a second position, and when the carbon tape winding shaft is positioned at the first position, the carbon tape between the carbon tape winding shaft and the carbon tape winding shaft is in a tensioning state so as to ensure the stability of the printing quality; when the carbon tape winding shaft is positioned at the second position, the carbon tape between the carbon tape winding shaft and the carbon tape winding shaft is in a loose state so as to facilitate the disassembly of the carbon tape roll wound on the carbon tape winding shaft; meanwhile, the carbon ribbon winding shaft of the carbon ribbon winding mechanism is located at a first position when no external force acts on the carbon ribbon winding shaft, and the carbon ribbon winding shaft can be moved from the first position to a second position only by applying external force to the carbon ribbon winding shaft of the carbon ribbon winding mechanism.

When the carbon tape wound on the carbon tape winding shaft is too much, the carbon tape wound on the carbon tape winding shaft needs to be dismounted so as to avoid the influence of the carbon tape on the carbon tape winding shaft on the use of the printer. However, due to the limitation of the structure of the existing carbon ribbon winding mechanism, when an operator removes the used carbon ribbon wound on the carbon ribbon winding shaft, an external force needs to be applied to the carbon ribbon winding shaft by one hand to move the carbon ribbon winding shaft to the second position, so that the carbon ribbon between the carbon ribbon winding shaft and the carbon ribbon winding shaft is in a loose state, thereby facilitating the removal of the carbon ribbon wound on the carbon ribbon winding shaft, and the other hand is used for removing the carbon ribbon wound on the carbon ribbon winding shaft. This not only brings great inconvenience to the operator in removing the carbon tape roll, but also results in an inability to improve the efficiency of removing the carbon tape roll.

Disclosure of Invention

In order to solve at least one of the above problems, according to one aspect of the present invention, there is provided a label base stock winding mechanism.

The label base paper winding mechanism comprises a first damping unit and a label winding shaft; wherein the label collecting scroll is rotatably arranged on the frame around the first pivot shaft; the first damping unit is arranged on the label take-up shaft and is arranged to be able to transmit power applied thereto by the drive unit (i.e. the first damping unit) to the label take-up shaft for driving the label take-up shaft in a pivoting movement about the first pivot axis. Specifically, when the driving unit drives the first damping unit (i.e. the first damping unit) to move, the first damping unit can drive the label collecting shaft to pivotally move around the first pivot shaft through the internal friction force of the first damping unit. Preferably, the friction force is arranged such that the traction force therein for pulling the pivotal movement of the label take-up spool about the first pivot axis is less than the maximum tension of the label base paper. Preferably, the label take-up spool is arranged coaxially with the first damping unit.

The power of the driving unit can be applied to the label rolling shaft through the first damping unit, meanwhile, the power of the driving unit is transmitted to the label rolling shaft through the internal friction force of the first damping unit, so that the label rolling shaft can pivotally move around the first pivot shaft under the condition that the driving unit drives the first damping unit to pivotally move around the first pivot shaft, and the first damping unit drives the label rolling shaft to move through the internal friction force of the first damping unit, so that when the label base paper wound on the label rolling shaft is excessive (namely, when the diameter of a paper roll of the label base paper wound on the label rolling shaft is large), the tension force of the label tape and the label base paper is increased, and when the tension force of the label tape and the label base paper is larger than the tension force generated on the label rolling shaft due to the friction force in the first damping unit, the first damping unit slides (namely, the first damping unit does not drive the label rolling shaft to pivotally move, or the speed of the first damping unit drives the label rolling shaft to pivotally move is slowed down), and the label tape and the label base paper is prevented from being broken due to the tension force of the label tape and the label base paper is excessive; along with the stop rotation or the rotational speed reduction of label winding shaft, the tension of label area and label backing paper reduces, and at this moment, first damping unit again can drive label winding shaft under its inside frictional force effect and begin the motion or begin the acceleration motion to can realize the mesh of the motion state of regulation label winding shaft according to the tensile size of label area and label backing paper through succinct energy-conserving mechanism.

In some embodiments, the first damping unit includes a first damping fin and a second damping fin; the second damping piece is connected to the label winding shaft, the first damping piece and the second damping piece are arranged in a mode that friction force between the first damping piece and the second damping piece enables the first damping piece to drive the second damping piece and the label winding shaft to pivotally move around the first pivot shaft under the driving of the driving unit.

When the label winding device is used, the first damping piece is connected with the driving unit, the first damping piece can pivotally move around the first pivot shaft under the driving of the driving unit in a connecting mode, the selection standard of the first damping unit is that the friction force between the first damping piece and the second damping piece can drive the label winding shaft to move, and the pulling force of the label winding shaft on the label base paper and the label strip is smaller than the maximum tensioning force of the label strip and the label base paper. Thus, when the label base paper on the label rolling shaft is less (namely, the diameter of the paper roll of the label base paper wound on the label rolling shaft is smaller) or the tension force of the label base paper on the label rolling shaft is smaller, the first damping piece can transmit the power of the driving unit to the second damping piece through the friction force between the first damping piece and the second damping piece, and then the second damping piece and the label rolling shaft are driven to pivotally move together around the first pivot shaft; when the label base paper on the label winding shaft is more or the tension of the label base paper on the label winding shaft is larger, the first damping piece can not continuously drive the second damping piece to pivotally move around the first pivot shaft through friction force, or can only drive the second damping piece to slowly move, namely, the speed of the first damping piece driving the second damping piece to move is related to the tension of the label base paper wound on the label winding shaft, and the speed of the first damping piece driving the second damping piece to move is slower as the tension of the label base paper is larger, so that the problem that the label tape and the label base paper are broken due to the fact that the tension is larger is avoided.

According to another aspect of the present invention, another label base stock winding mechanism is provided. The label base paper winding mechanism comprises a driving unit, a first damping unit and a label winding shaft, wherein the driving unit is arranged on a frame, and the label winding shaft can be arranged on the frame in a pivoting manner around a first pivot shaft.

As one embodiment of the first damping unit and the drive unit, the first damping unit is arranged on the drive unit, and the first damping unit and the drive unit are arranged such that, when the drive unit drives the first damping unit to move, the label take-up reel can be driven to pivotally move about the first pivot shaft by a frictional force exerted on the label take-up reel by the first damping unit. Therefore, when the tension of the label base paper on the label rolling shaft is smaller or no tension exists, the first damping unit can drive the label rolling shaft to pivotally move around the first pivot shaft through friction force; when the tension of the label base paper on the label rolling shaft is larger, the first damping unit and the label rolling shaft are in slipping, and at the moment, the first damping unit does not drive the label rolling shaft to move or only drives the label rolling shaft to move in a decelerating manner so as to reduce the tension of the label base paper on the label rolling shaft; when the tension of the label base paper on the label collecting scroll is smaller or no tension exists, the first damping unit can drive the label collecting scroll to move or accelerate again. Preferably, the traction force of the friction force for pulling the pivotal movement of the label winding shaft is set to be smaller than the maximum tension of the label base paper. Preferably, at least two of the drive unit, the label take-up spool and the first damping unit are coaxially arranged. In this embodiment, the drive unit may be realized as a transmission unit comprising a first rotary motor provided on the frame and being coaxially connected to the rotary shaft of the first rotary motor, in which embodiment the first damping unit is provided on the transmission unit and is arranged to be able to bring the label-receiving reel into a pivoting movement about the first pivot shaft by means of its friction force exerted on the label-receiving reel. The drive unit may also be realized as comprising a first rotary motor provided on the frame, in which embodiment the first damping unit is coaxially connected to the rotary shaft of the first rotary motor and arranged to be able to bring the label take-up shaft into a pivoting movement about the first pivot shaft by means of its friction force exerted on the label take-up shaft. The drive unit may also be realized as comprising a transmission unit provided on the frame, in which realization the first damping unit is provided on the transmission unit and the first damping unit is arranged to be able to bring the label take-up shaft into a pivoting movement about the first pivot axis by means of its friction force exerted on the label take-up shaft.

As another embodiment of the first damping unit and the driving unit, the first damping unit is provided on the label winding shaft, and the driving unit is arranged to be able to bring the first damping unit and the label winding shaft into a pivotal movement about the first pivot shaft by means of a frictional force exerted on the first damping unit. Therefore, when the tension of the label base paper on the label rolling shaft is smaller or no tension exists, the driving unit can drive the first damping unit and the label rolling shaft to pivotally move around the first pivot shaft together through friction force; when the tension of the label base paper on the label rolling shaft is larger, a slipping phenomenon occurs between the driving unit and the first damping unit, and at the moment, the driving unit does not drive the first damping unit and the label rolling shaft to move or only drives the label rolling shaft to move in a decelerating manner so as to reduce the tension of the label base paper on the label rolling shaft; when the tension of the label base paper on the label winding shaft is smaller or no tension is applied, the driving unit can drive the first damping unit and the label winding shaft to move or accelerate again. Preferably, the traction force of the friction force for pulling the pivotal movement of the label winding shaft is set to be smaller than the maximum tension of the label base paper. Preferably, at least two of the drive unit, the label take-up spool and the first damping unit are coaxially arranged. In this embodiment, the driving unit may be implemented to include a first rotating motor provided on the frame and a transmission unit coaxially connected to the rotating shaft of the first rotating motor, and in this implementation, the transmission unit is configured to drive the first damping unit and the label winding shaft to pivotally move about the first pivot shaft by a frictional force applied to the first damping unit. The drive unit may also be realized as comprising a first rotary motor provided on the frame, in which embodiment the first rotary motor is arranged to be able to drive the first damping unit and the label winding shaft to rotate about the first pivot axis by means of its friction force exerted on the first damping unit. The drive unit may also be realized as comprising a transmission unit provided on the frame, in which embodiment the transmission unit is arranged to be able to drive the first damping unit and the label winding shaft to rotate about the first pivot axis by means of its friction force exerted on the first damping unit.

According to one aspect of the present invention, there is provided a printer comprising a frame and the aforementioned label base stock take-up mechanism.

In some embodiments, the printer further comprises a first detection unit for detecting the state of motion of the label take-up spool. So as to grasp the movement state of the label collecting shaft in real time.

In some embodiments, the label winding shaft is connected with a first detection disc, and first through holes are uniformly distributed on the circumference of the first detection disc, which takes the first pivot shaft as the center of a circle; the first detection unit is a first photoelectric sensor arranged at a position corresponding to the position of the first detection disc, wherein the position is provided with the first through hole. The rotation speed of the label take-up shaft is grasped by counting the number of the first through holes detected in the unit time.

In some embodiments, the printer further comprises at least one of a carbon tape winding mechanism capable of enabling one-handed removal of the carbon tape roll on the carbon tape winding shaft, a carbon tape unwinding mechanism capable of enabling the unwound carbon tape to automatically recover the tensioned state, and a label unwinding mechanism capable of enabling the unwound label tape to automatically recover the tensioned state. So as to facilitate the disassembly of the carbon tape roll and to ensure the quality of printing by ensuring the tensioning of the carbon tape and the label tape.

In some embodiments, the carbon ribbon take-up mechanism includes a motion bar and an adjustable limit unit disposed on the frame; and a carbon ribbon take-up shaft pivotally connected to the motion bar; the motion rod is arranged to trigger the adjustable limiting unit through motion so that the carbon ribbon winding shaft is locked at the second position by the adjustable limiting unit. Therefore, when the carbon tape winding mechanism is used, when the used carbon tape wound on the carbon tape winding shaft is more, the carbon tape winding shaft can be locked at the second position (at the moment, the carbon tape between the carbon tape winding shaft and the carbon tape winding shaft is in a loose state, and the carbon tape winding mechanism is in a stop use state) by controlling the motion rod to move to the triggering adjustable limiting unit, and because the carbon tape winding shaft is locked at the second position by the adjustable limiting unit, an operator can release the hand for fixing the carbon tape winding shaft at the second position, and the carbon tape wound on the carbon tape winding shaft is dismounted by two hands, so that the operation is convenient and quick.

In some embodiments, the movement bar is configured to trigger the adjustable stop unit by movement such that locking of the carbon ribbon take-up reel by the adjustable stop unit in the second position is achieved as: the motion rod is pivotally connected to the frame; the adjustable limiting unit is a limiting block which is pivotally connected to the frame; the motion rod is provided with a first protruding part, and one side of the first protruding part facing the limiting block is provided with a first supporting surface; the first supporting surface and the limiting block are arranged in a mode that when the carbon ribbon winding shaft is located at the first position, the limiting block abuts against the first supporting surface, and the limiting block has a tendency of swinging towards one side where the motion rod is located.

Therefore, when the motion rod swinging limiting block is separated from the first supporting surface of the motion rod, the limiting block swings towards one side where the motion rod is located due to the fact that the supporting function of the first supporting surface is not achieved, the limiting block is abutted against the surface, adjacent to the first supporting surface, of the first protruding portion, the motion rod is prevented from continuing swinging towards one side where the limiting block is located, locking of the limiting block and the motion rod is achieved, and therefore the carbon ribbon winding shaft connected to the motion rod is locked at the second position.

In some embodiments, the printer further comprises a tensioning unit for driving the carbon tape take-up spool from the second position to the first position. When no external force acts on the moving rod, the moving rod can keep the state that the carbon ribbon winding shaft is at the first position, so that the moving rod can not swing under the action of no external force, and the carbon ribbon winding mechanism can be stably used under the condition of no external force.

In some embodiments, the printer further comprises a second detection unit for detecting that the carbon tape take-up spool is in the second position and/or is away from the first position. Because the carbon ribbon between the carbon ribbon winding shaft and the carbon ribbon winding shaft may be in a loose state when the carbon ribbon winding shaft leaves the first position or is in the second position, if the carbon ribbon winding mechanism is used continuously, the printing effect may be poor, and therefore, an operator can judge whether to stop using the carbon ribbon winding mechanism according to the signal detected by the second detection unit.

In some embodiments, the carbon-tape unreeling mechanism comprises a carbon-tape unreeling shaft pivotably connected to the frame with a pivot axis parallel to the carbon-tape unreeling shaft; a second damping unit and a first tensioning swing rod which are arranged on the carbon ribbon unreeling shaft in a pivotable manner around a pivoting shaft of the carbon ribbon unreeling shaft; and a first elastic member connecting the first tensioning swing link with the frame; wherein, carbon ribbon unreel spool, second damping unit and first tensioning pendulum rod set up as: the carbon tape unreeling shaft drives the second damping unit to rotate around the pivot shaft of the carbon tape unreeling shaft through friction force, and the second damping unit drives the first tensioning swing rod to rotate around the pivot shaft of the carbon tape unreeling shaft through friction force. Therefore, the carbon ribbon unreeling shaft can drive the first tensioning swing rod to rotate through the second damping unit, the first elastic piece is in a stretching or compression state, and when the carbon ribbon unreeling shaft stops rotating, the carbon ribbon unreeling shaft and the first tensioning swing rod can rotate back to the original position under the action of elastic force of the first elastic piece, so that the carbon ribbon on the carbon ribbon unreeling shaft is kept in a tensioning state.

In some embodiments, the label unwind mechanism includes a label unwind shaft, a friction belt tensioning shaft, and a second tensioning swing link, the label unwind shaft, the friction belt tensioning shaft, and the second tensioning swing link being pivotally connected to the frame with pivot axes parallel to each other; the friction belt tensioning shaft and the second tensioning swing rod are respectively connected with a second elastic piece and a third elastic piece of the frame; a damping belt connecting the friction belt tensioning shaft and the second tensioning swing rod; the first guide wheel is connected to the second tensioning swing rod; the friction belt tensioning shaft, the second tensioning swing rod and the damping belt are arranged in a mode that one of the friction belt tensioning shaft and the second tensioning swing rod drives the other one to synchronously move through the damping belt, the second elastic piece, the third elastic piece and the damping belt are arranged in a mode that when the damping belt drives the friction belt tensioning shaft and the second tensioning swing rod to synchronously move, one of the second elastic piece and the third elastic piece is in a stretching state, and/or the other one is in a compression state, the damping belt drives the label unreeling shaft to reversely rotate with one of the friction belt tensioning shaft and the second tensioning swing rod through friction force, and therefore friction force applied by the damping belt to the label unreeling shaft is increased or reduced. Therefore, when the label unreeling shaft stops rotating, the friction belt tensioning shaft and the second tensioning swing rod rotate back to the original positions under the elastic action of the second elastic piece and the third elastic piece respectively, so that the first guide wheel wound on the friction belt tensioning shaft and the label belt wound on the label unreeling shaft are in a tensioning state.

Drawings

FIG. 1 is a schematic diagram of a label base stock winding mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a first embodiment of a label base stock winding mechanism according to the present invention;

FIG. 3 is a schematic cross-sectional view of a second embodiment of a label base stock winding mechanism of the present invention;

FIG. 4 is a schematic cross-sectional view of a third embodiment of a label base stock winding mechanism according to the present invention;

FIG. 5 is a schematic diagram of a printer with a label base stock winding mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic view of a structure of a moving rod of a carbon ribbon take-up mechanism according to an embodiment of the present invention in a first position;

FIG. 7 is a schematic diagram of a structure of a motion bar of a carbon ribbon winding mechanism according to an embodiment of the present invention when an Nth external force is applied to an adjustable limiting unit;

FIG. 8 is a schematic view of a structure of a moving rod of a carbon ribbon take-up mechanism according to an embodiment of the present invention in a second position;

FIG. 9 is a schematic diagram of a structure of a motion bar of a carbon ribbon winding mechanism according to an embodiment of the present invention when an n+1st external force is applied to an adjustable limiting unit;

FIG. 10 is a schematic view of a tensioning unit according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a structure of the printer of FIG. 5 from another perspective;

FIG. 12 is a schematic view showing a usage status structure of the printer shown in FIG. 11;

FIG. 13 is a schematic view of a partial cross-sectional structure along the direction C-C of the printer shown in FIG. 5;

reference numerals: 11. a driving unit; 111. a first rotating motor; 112. a transmission unit; 1121. a synchronizing wheel; 12 12', 12″ first damping units; 121. a first damping fin; 122. a second damping fin; 13. a label take-up spool; 131. a first pivot shaft; 14. a first detection unit; 15. a first detection plate; 151. a first through hole; 20. a carbon tape winding mechanism; 23. a motion bar; 231. a first jack-up portion; 232. a first boss; 233. a first support surface; 234. a first through groove; 2341. a first notch; 24. an adjustable limit unit; 241. a first bayonet; 25. a carbon tape take-up spool; 26. a tensioning unit; 2611. a first moment arm; 2612. a second moment arm; 262. a first stopper; 2621. a positioning groove; 271. a second photosensor; 272. a first microswitch; 273. a first elastic sheet; 28. winding a power shaft; 30. a carbon tape unreeling mechanism; 31. a carbon tape unreeling shaft; 32. a second damping unit; 321. a first friction plate; 322. a third damping fin; 323. a fourth elastic member; 324. a first pressing piece; 33. a first tensioning swing rod; 34. a first elastic member; 40. a label unreeling mechanism; 41. a label unreeling shaft; 42. friction belt tensioning shaft; 43. the second tensioning swing rod; 44. a second elastic member; 45. a third elastic member; 47. a first guide wheel; 48. a damping belt; 49. a second detection unit; 491. a third photosensor; 492. a second microswitch; 493. a second spring plate; 100. a frame; 200. a carbon tape; 300. a label tape; 401. a print head; 402. and stripping the rod.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," comprising, "or" includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. The terms used herein are generally terms commonly used by those skilled in the art, and if not consistent with the commonly used terms, the terms herein are used.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Fig. 2 schematically shows a label base stock winding mechanism according to a first embodiment of the present invention.

As shown in fig. 2, the label base stock winding mechanism includes a first damping unit 12 and a label winding shaft 13; wherein the label take-up shaft 13 is pivotally mounted on the frame 100; the first damping unit 12 is fixedly connected to the label winding shaft 13, and the first damping unit is configured to transmit power applied to the label winding shaft 13 by the driving unit 11 to drive the label winding shaft 13 to pivotally move about the first pivot shaft 131. Specifically, the first damping unit 12 is configured such that when the driving unit 11 drives the first damping unit 12 to move, the first damping unit 12 can drive the label take-up shaft 13 to pivotally move about the first pivot shaft 131 by the frictional force inside thereof.

As one embodiment of the first damping unit 12 configured to transmit the power applied thereto by the driving unit 11 to the label winding shaft 13 to bring the label winding shaft 13 into pivotal movement about the first pivot shaft 131, with continued reference to fig. 2, the first damping unit 12 includes a first damping sheet 121 and a second damping sheet 122; the second damping fin 122 is connected to the label winding shaft 13, and the first damping fin 121 and the second damping fin 122 are configured such that friction between the first damping fin 121 and the second damping fin 122 enables the first damping fin 121 to drive the second damping fin 122 and the label winding shaft 13 to pivotally move around the first pivot shaft 131 under the driving of the driving unit 11. Illustratively, the friction force between the first damping fin 121 and the second damping fin 122 is generated because the second damping fin 122 can clamp the first damping fin 121 to generate static friction force on the contact surface of the two. The first damping unit 12 composed of the first damping sheet 121 and the second damping sheet 122 having friction force on the contact surface may be of a type commonly used in the art.

Fig. 3 schematically illustrates a label base stock winding mechanism according to a second embodiment of the present invention.

As shown in fig. 3, the label base paper winding mechanism comprises a driving unit 11, a first damping unit 12' and a label winding shaft 13; wherein the driving unit 11 is fixedly installed on the frame 100; the label take-up spool 13 is pivotally mounted on the frame 100 about a first pivot axis 131; the first damping unit 12' is fixedly connected to the driving unit 11; the first damping unit 12 ' and the driving unit 11 are arranged such that, when the driving unit 11 drives the first damping unit 12 ' to move, the label winding shaft 13 can be driven to pivotally move about the first pivot shaft 131 by the frictional force exerted on the label winding shaft 13 by the first damping unit 12 '. For example, the driving unit 11 to which the first damping unit 12 ' is connected may be mounted on the frame 100 while the first damping unit 12 ' connected thereto is pressed against the label winding shaft 13 such that there is a static friction between the first damping unit 12 ' and the label winding shaft 13.

As shown in fig. 1 and 3, as a first embodiment of the driving unit 11, the driving unit 11 includes a first rotating motor 111 fixedly installed on the frame 100 and a transmission unit 112; wherein, the base of the first rotating motor 111 is installed on the frame 100, and the transmission unit 112 is coaxially connected with the rotating shaft of the first rotating motor 111; the first damping unit 12 is connected, preferably coaxially, to one of the rotation units in the transmission unit 112 so that a friction force exists between the first damping unit 12 'and the label winding shaft 13, so that the first damping unit 12' can drive the label winding shaft 13 to pivotally move around the first pivot shaft 131 by the friction force applied to the label winding shaft 13 by the transmission unit 112 when rotated.

As a second embodiment of the driving unit 11, the driving unit 11 includes a first rotating motor 111 fixedly mounted on the frame 100; wherein, the base of the first rotating motor 111 is mounted on the frame 100, and the first damping unit 12 ' is coaxially connected with the rotating shaft of the first rotating motor 111, so that a friction force exists between the first damping unit 12 ' and the label winding shaft 13, and thus, when the first damping unit 12 ' is driven to rotate by the first rotating motor 111, the label winding shaft 13 can be driven to pivotally move around the first pivot shaft 131 by the friction force applied to the label winding shaft 13.

As shown in fig. 3, as a third embodiment of the driving unit 11, the driving unit 11 includes a transmission unit 112 fixedly installed on the frame 100; wherein, one of the rotating parts of the transmission unit 112 is coaxially connected with the first damping unit 12 'so as to enable a friction force to exist between the first damping unit 12 and the label winding shaft 13, and therefore, when the first damping unit 12' is driven to rotate by the transmission unit 112, the label winding shaft 13 can be driven to pivotally move around the first pivot shaft 131 by the friction force applied to the label winding shaft 13.

Fig. 4 schematically illustrates a label base stock winding mechanism according to a third embodiment of the present invention.

As shown in fig. 1 and 4, the label base paper winding mechanism comprises a driving unit 11, a first damping unit 12″ and a label winding shaft 13; wherein the driving unit 11 is fixedly installed on the frame 100; the label take-up spool 13 is pivotally mounted on the frame 100 about a first pivot axis 131; the first damping unit 12' is fixedly connected to the label winding shaft 13; the driving unit 11 is arranged to bring the first damping unit 12″ together with the label winding shaft 13 into a pivotal movement about the first pivot axis 131 by means of its frictional force exerted on the first damping unit 12″. For example, when the driving unit 11 is mounted on the frame 100, the power output portion of the driving unit 11 may be pressed against the first damping unit 12″ such that there is a static friction force between the power output portion of the driving unit 11 and the first damping unit 12″.

As shown in fig. 4, as a first embodiment of the driving unit 11, the driving unit 11 includes a first rotating motor 111 fixedly installed on the frame 100, and a transmission unit 112 coaxially connected with a rotating shaft of the first rotating motor 111; the housing of the first rotating motor 111 is mounted on the frame 100, and the transmission unit 112 is compressed on the first damping unit 12″ when connected to the first rotating motor 111, so that when the first rotating motor 111 drives the transmission unit 112 to rotate, the transmission unit 112 can drive the first damping unit 12″ and the label winding shaft 13 to pivotally move together about the first pivot shaft 131 through friction between the transmission unit 112 and the first damping unit 12″.

As a second embodiment of the driving unit 11, the driving unit 11 includes a first rotating motor 111 fixedly mounted on the frame 100; the housing of the first rotary motor 111 is mounted on the frame 100, and when the first rotary motor 111 is mounted on the frame 100, the rotation shaft of the first rotary motor 111 is pressed against the first damping unit 12″ so that, when the first rotary motor 111 rotates, the first rotary motor 111 can drive the first damping unit 12″ and the label winding shaft 13 to pivotally move together about the first pivot shaft 131 by the frictional force between the first rotary motor 111 and the first damping unit 12″.

As shown in fig. 4, as a third embodiment of the driving unit 11, the driving unit 11 includes a transmission unit 112 fixedly installed on the frame 100, and when the transmission unit 112 is installed on the frame 100, one of rotating parts of the transmission unit 112 is pressed against the first damping unit 12″ so that the transmission unit 112 can drive the first damping unit 12″ and the label winding shaft 13 to pivotally move together about the first pivot shaft 131 by friction force between the transmission unit 112 and the first damping unit 12″.

Regardless of any of the embodiments described above for the label base stock winding mechanism, when the drive unit 11 includes the drive unit 112, the drive unit 112 may be implemented as any of the embodiments described below.

As a first embodiment of the transmission unit 112, as shown in fig. 1, it includes at least two synchronizing wheels 1121 connected by a synchronous belt transmission, all synchronizing wheels 1121 in the transmission unit 112 are synchronously rotated under the drive of the synchronous belt, one synchronizing wheel 1121 is coaxially connected with the rotating shaft of the first rotating motor 111, and the other synchronizing wheels 1121 are pivotally connected to the frame 100 or coaxially and pivotally connected to the label winding shaft 13. When the transmission unit 112 is applied to the label base stock winding structure of the first embodiment, one synchronizing wheel 1121 of the transmission unit 112 is coaxially connected with the second damping sheet 122. When the transmission unit 112 is applied to the label base paper winding structure of the second embodiment, one synchronizing wheel 1121 in the transmission unit 112 is coaxially connected with the first damping unit 12, 12', 12″; when the transmission unit 112 is applied to the label base paper winding structure of the third embodiment, when the transmission unit 112 is mounted on one of the frame 100, the first rotating motor 111 or the label winding shaft 13, one synchronizing wheel 1121 in the transmission unit 112 presses the first damping unit 12, 12 ', 12″ to drive the first damping unit 12, 12 ', 12″ and the label winding shaft 13 to pivotally move together about the first pivot shaft 131 by friction between the synchronizing wheel 1121 and the first damping unit 12, 12 '.

As a second embodiment of the transmission unit 112, it includes at least two sprockets connected by a chain transmission, all the sprockets in the transmission unit 112 are synchronously rotated by the chain, one sprocket is coaxially connected with the rotation shaft of the first rotation motor 111, and the other sprockets are pivotally connected to the frame 100 or coaxially and pivotally connected to the label winding shaft 13. When the transmission unit 112 is applied to the label base stock winding structure of the first embodiment, one sprocket in the transmission unit 112 is coaxially connected with the second damper 122. When the transmission unit 112 is applied to the label base paper winding structure of the second embodiment, one sprocket in the transmission unit 112 is coaxially connected with the first damping unit 12, 12'; when the transmission unit 112 is applied to the label base paper winding structure of the third embodiment, one sprocket in the transmission unit 112 presses the first damping unit 12, 12 ', 12″ to drive the first damping unit 12, 12 ', 12″ and the label winding shaft 13 to pivotally move together about the first pivot shaft 131 by friction between the sprocket and the first damping unit 12, 12 ', 12″ when the transmission unit 112 is mounted at any one of the frame 100, the first rotation motor 111, or the label winding shaft 13.

As a third embodiment of the transmission unit 112, it is realized as a gear pair of intermeshing transmission, one gear of the gear pair being coaxially connected to the rotation shaft of the first rotary motor, the other gears being pivotably connected to the frame 100 or coaxially pivotably connected to the label take-up shaft 13. When the transmission unit 112 is applied to the label base stock winding structure of the first embodiment, one gear in the transmission unit 112 is coaxially connected with the second damper 122. When the transmission unit 112 is applied to the label base paper winding structure of the second embodiment, one gear in the transmission unit 112 is coaxially connected with the first damping unit 12, 12'; when the transmission unit 112 is applied to the label base paper winding structure of the third embodiment, one gear in the transmission unit 112 presses the first damping unit 12, 12 ', 12″ to drive the first damping unit 12, 12 ', 12″ and the label winding shaft 13 to pivotally move together about the first pivot shaft 131 by friction between the gear and the first damping unit 12, 12 ', 12″ when the transmission unit 112 is mounted at any one of the frame 100, the first rotation motor 111, or the label winding shaft 13.

In other implementations of the drive unit 11, the drive unit 11 may also comprise other drive devices or comprise other drive devices and transmission modules, which drive devices employ devices that release power as rotational force when the drive unit 11 comprises only drive devices. When the driving unit 11 includes a driving device and a transmission module, the driving device is not limited to a rotating motor, so long as the transmission module can convert the power of the driving device into a rotating force, for example, the driving device is a linear motor or an air cylinder, the transmission module is a rack and pinion which are mutually adapted, and the rack is connected with a driving shaft of the linear motor or the air cylinder, and the rack is driven by the linear motor or the air cylinder to move, so as to further drive the gear to rotate, at this time, the first damping unit 12, 12', 12″ selects a connection mode, such as the aforementioned coaxial connection or friction connection, with the transmission unit 112 according to the embodiment of the label base paper winding mechanism to which the first damping unit is applied.

When the label base paper winding mechanism is used, the power of the driving unit 11 can be applied to the label winding shaft 13 through the first damping units 12, 12 ', specifically, the power of the driving unit 11 can be applied to the first damping unit 12' connected with the label winding shaft 13 through the friction between the driving unit 11 and the first damping unit 12 ', and the power of the driving unit can also be applied to the label winding shaft 13 through the friction between the first damping unit 12' connected with the driving unit and the label winding shaft 13, or can be conducted to the label winding shaft 13 connected with the first damping unit 12 through the friction inside the first damping unit 12 connected with the driving unit. Therefore, when the diameter of the paper roll of the label base paper wound on the label winding shaft 13 is larger, the tension of the label base paper on the label winding shaft 13 is increased, and when the tension of the label base paper is larger than the tension of the label base paper generated on the label winding shaft 13 due to the friction force between the driving unit 11 and the first damping unit 12 ', or the tension of the label base paper generated on the label winding shaft 13 due to the friction force between the first damping unit 12 ' and the label winding shaft 13, or the tension of the label base paper generated on the label winding shaft 13 due to the friction force inside the first damping unit 12, slip occurs between the driving unit 11 and the first damping unit 12 ' or the slip occurs inside the first damping unit 12 (namely, the driving unit 11 can not be driven to rotate the label winding shaft 13 through the first damping units 12, 12 ') or the driving unit 11 can not be driven to rotate through the first damping units 12, 12 ', or the driving unit 12 ' can be driven to rotate the label winding shaft 13, or the slip occurs between the driving unit 11 and the label winding shaft 13 due to the friction force of the first damping unit 12 ', and the label winding shaft is prevented from being pulled by 300 to exceed the tension of the label winding shaft; along with the stop of the rotation of the label winding shaft 13 or the reduction of the rotation speed, the tension of the label tape 300 and the label base paper is reduced, at this time, the driving unit 11 can drive the label winding shaft 13 to move or accelerate through the first damping units 12, 12', so that the purpose of adjusting the movement state of the label winding shaft 13 according to the tension of the label tape 300 and the label base paper can be realized through a simple and energy-saving structure. By providing the label base paper winding mechanism of the present invention on the printer, the rotational speed of the label winding shaft 13 can be adaptively adjusted according to the magnitude of the tension force of the label tape 300 and the label base paper wound around the label winding shaft 13, and since the label tape 300 and the label base paper cannot be kept in a non-tensioned state or an excessively tensioned state for a long period of time, the adjustment of the rotational speed with the label winding shaft 13 is a dynamic adjustment process, so that the label winding shaft 13 can still be ensured to work smoothly without breaking the label tape 300 and the label base paper.

Whether the label base paper winding mechanism drives the label winding shaft 13 to pivotally move around the first pivot shaft 131 through the friction force in the first damping unit 12, or drives the label winding shaft 13 to pivotally move around the first pivot shaft 131 through the friction force between the first damping unit 12 ' and the label winding shaft 13, or drives the label winding shaft 13 to pivotally move around the first pivot shaft 131 through the friction force between the driving unit 11 and the first damping unit 12″), the friction force is set to be capable of driving the label winding shaft 13 to pivotally move around the first pivot shaft 131, since the label base paper remained after the label tape 300 is used needs to be wound through the label winding shaft 13, the unused label tape 300 is unreeled by the label unreeling shaft 41, and the tension force of the label tape 300 and the label base paper is basically in the same state when in use, however, since the linear velocity of the label base paper wound on the label winding reel 13 is not equal to the linear velocity of the label tape 300 wound on the label winding reel 41 at any time, the difference between the linear velocity of the label base paper and the linear velocity of the label tape 300 causes the label base paper and the label tape 300 to have a tension, for example, when the linear velocity of the label tape 300 is smaller than the linear velocity of the label base paper, the label base paper and the label tape 300 are fully tensioned, at which time the tension of the label base paper and the label tape 300 is greater than the tension generated by the friction, the first damping unit 12 having friction inside slips, or the first damping unit 12 ' having friction with each other and the label winding reel 13 slip, or the first damping unit 12 ' having friction with each other slips with the driving unit 11, i.e. the tension on the label base stock due to the friction forces described above on the label take-up reel 13 is less than the maximum tension that the label tape 300 and label base stock can withstand.

Fig. 5 to 13 schematically show a printer provided with a label base stock winding mechanism according to an embodiment of the present invention.

As shown in fig. 5, the printer includes a frame 100 and the label base stock take-up mechanism described above.

In a preferred embodiment, as shown in fig. 1, the printer further comprises a first detection unit 14 for detecting the movement state of the label take-up reel 13, so as to grasp the movement state of the label take-up reel 13 in real time. The first detecting unit 14 may employ, for example, a slot type photoelectric sensor or a speed sensor, and, illustratively, when the first detecting unit 14 employs a slot type photoelectric sensor, detecting the moving state of the label take-up shaft 13 by the first detecting unit 14 may be implemented as: the label collecting reel 13 is connected with a first detection disc 15, and first through holes 151 are uniformly distributed on the circumference of the first detection disc 15 taking the first pivot shaft 131 as the center of a circle; the first detection unit 14 is a first photosensor provided at a position corresponding to a position of the first detection tray 15 where the first through hole 151 is provided, for example, the first photosensor is mounted on the chassis 100, and the position of the first photosensor is provided at one or both sides of any one of the first through holes 151 of the first detection tray 15. The rotation speed of the label take-up reel 13 is grasped by counting the number of the first through holes 151 detected in a unit time.

In a preferred embodiment, with continued reference to FIG. 5, the printer further includes at least one of a carbon tape take-up mechanism 20 that enables one-handed removal of the carbon tape roll on the carbon tape take-up spool 25, a carbon tape unwind mechanism 30 that enables automatic recovery of the unwound carbon tape 200 from tension, and a label unwind mechanism 40 that enables automatic recovery of the unwound label tape 300 from tension. To facilitate the removal of the carbon tape roll and to ensure the quality of printing by ensuring the tightening of the carbon tape 200 and the label tape 300.

Fig. 5 to 11 exemplarily show a carbon tape winding mechanism 20 of an embodiment, the carbon tape winding mechanism 20 including a mounting bracket 21, a carbon tape winding shaft 25, a moving lever 23, and an adjustable limit unit 24; wherein the motion rod 23 and the adjustable limiting unit 24 are arranged on the mounting frame 21; the carbon-tape take-up spool 25 is pivotally connected to the movement lever 23; the movement lever 23 is arranged to trigger the adjustable stop unit 24 by movement such that the carbon-tape take-up reel 25 is locked in the second position by the adjustable stop unit 24. Therefore, an operator can lock the carbon ribbon winding shaft 25 at the second position through the adjustable limiting unit 24 so as to relieve the hand used for fixing the carbon ribbon winding shaft 25 at the second position, and the carbon ribbon wound on the carbon ribbon winding shaft 25 is dismounted by two hands, so that the operation is convenient and quick; when the printer is required to be used, the carbon ribbon winding shaft 25 is firstly unlocked from the second position, at the moment, the moving rod 23 connected with the carbon ribbon winding shaft 25 moves to the first position under the tensioning action of the tensioning mechanism, so that the outer diameter of the carbon ribbon winding shaft 25 is propped against the winding power shaft 28, the winding power shaft 28 is driven by the power equipment to rotate, so that the carbon ribbon winding shaft 25 propped against the outer diameter of the winding power shaft is driven to rotate, and the rotating carbon ribbon winding shaft 25 can wind the used carbon ribbon 200 onto the carbon ribbon winding shaft 25.

In some embodiments, as shown in fig. 5 to 10, the movement lever 23 is configured to trigger the adjustable stop unit 24 by movement, so that the locking of the carbon ribbon take-up reel 25 by the adjustable stop unit 24 in the second position is implemented as: the movement lever 23 is pivotally connected to the mounting bracket 21; the adjustable limiting unit 24 is realized as a limiting block, and the limiting block is pivotally connected to the mounting frame 21; the movement rod 23 is integrally formed or machined with a first protruding portion 232, one side of the first protruding portion 232 facing the stopper is provided with a first supporting surface 233, the first supporting surface 233 and the stopper are arranged such that when the carbon ribbon take-up shaft 25 is located at the first position, the stopper abuts against the first supporting surface 233, and the stopper has a tendency to swing to the side where the movement rod 23 is located (as shown in fig. 6). For example, the tendency of the stopper to swing toward the side where the movement rod 23 is located when the stopper abuts on the first supporting surface 233 may be implemented as: the limiting block is obliquely abutted against the first supporting surface 233, under the action of gravity of the limiting block, the limiting block has a trend of swinging towards one side where the moving rod 23 is located, so that when the limiting block is not supported by the first supporting surface 233, the limiting block can swing towards one side where the moving rod 23 is located, the limiting block is abutted against the surface, adjacent to the first supporting surface 233, of the first protruding portion 232, the moving rod 23 is prevented from continuously swinging towards one side where the limiting block is located, locking of the limiting block and the moving rod 23 is achieved, further the carbon ribbon winding shaft 25 connected to the moving rod 23 is locked at the second position, and the carbon ribbon winding shaft 25 is locked at the second position by the adjustable limiting unit 24 through the mode that the limiting block locks the moving rod 23. Preferably, the first supporting surface 233 is curved to ensure smooth swinging of the moving rod 23 connected to the carbon ribbon take-up reel 25. More preferably, as shown in fig. 5 to 10, the first supporting surface 233 is implemented as an arc surface centered on the pivot axis of the movement lever 23, so as to avoid that the movement lever 23 cannot swing smoothly due to the abutment of the stopper on the first supporting surface 233. So as to ensure that the movement rod 23 can still smoothly rotate relative to the limiting block when the limiting block abuts against the first supporting surface 233 in the process of rotating the movement rod 23, and the limiting block can be locked by abutting against the surface of the first protruding portion 232 adjacent to the first supporting surface 233 when the first supporting surface 233 is separated from the limiting block.

In some embodiments, the pivot axis of the motion bar 23 is parallel to the pivot axis of the carbon ribbon take-up spool 25. In some embodiments, the pivot axis of the stopper is parallel to the pivot axis of the movement bar 23.

The carbon ribbon winding mechanism 20 can be used on a printer, when more used carbon ribbon 200 is wound on the carbon ribbon winding shaft 25, the carbon ribbon winding shaft 25 can be locked at a second position (shown in fig. 8) by controlling the moving rod 23 to move to trigger the adjustable limiting unit 24 (shown in fig. 7), and the operator can release the hand for fixing the carbon ribbon winding shaft 25 at the second position because the carbon ribbon winding shaft 25 is locked at the second position by the adjustable limiting unit 24 after triggering the adjustable limiting unit 24, and the operator can use both hands to detach the carbon ribbon wound on the carbon ribbon winding shaft 25.

When the printer is used, the printing effect of the labels on the label tape 300 can be enhanced by heating the carbon tape 200 released from the carbon tape unwinding shaft 31, and the heated carbon tape 200 is wound up by the carbon tape winding shaft 25 (as shown in fig. 12).

In some embodiments, with continued reference to fig. 5-10, the movement bar 23 is configured to trigger the adjustable stop unit 24 by movement such that the locking of the carbon ribbon take-up reel 25 by the adjustable stop unit 24 in the second position is further implemented as: the limiting block is integrally formed or processed with a first bayonet 241; the motion bar 23 is also integrally formed, machined or connected with a first jack-up portion 231; when the moving rod 23 rotates relative to the mounting frame 21 until the stopper is separated from the first supporting surface 233 and the first lifting portion 231 impacts the stopper, the stopper rotates toward the side of the first protruding portion 232 until the surface of the first bayonet 241 abuts against the second supporting surface, i.e. the first bayonet 241 is clamped on the first protruding portion 232, so as to lock the moving rod 23 and further lock the carbon ribbon winding shaft 25 disposed on the moving rod 23 at the second position (as shown in fig. 8). The first jack-up portion 231 is disposed on one side of the stopper facing away from the first supporting surface 233, so that when the first jack-up portion 231 impacts the stopper, the first jack-up portion 231 impacts one end of the stopper facing away from the first supporting surface 233, and further ensures that the stopper rotates towards one side where the first protruding portion 232 is located after being impacted by the first jack-up portion 231, and ensures that the first bayonet 241 on which the stopper rotates is clamped with the first protruding portion 232 on the moving rod 23, thereby locking the stopper and the moving rod 23.

When the carbon tape winding mechanism is used, when the carbon tape winding shaft 25 and the adjustable limiting unit 24 are unlocked, the swing motion rod 23 can be operated by a human hand to drive the carbon tape winding shaft 25 to move from the second position to the first position so as to ensure the stability of the subsequent printing quality; the carbon ribbon take-up reel 25 may also be arranged to automatically return from the second position to the first position in the unlocked state. As one implementation manner of automatically recovering the carbon ribbon take-up shaft 25 from the second position to the first position in the unlocked state, as shown in fig. 5 to 10, the first protruding portion 232 and the stopper are provided above the first jack-up portion 231, and the first supporting surface 233 is an outer surface of the first protruding portion 232, so that when the movement rod 23 swings upward, the first jack-up portion 231 triggers the stopper by striking the stopper; when the adjustable limiting unit 24 and the carbon ribbon take-up shaft 25 are unlocked, the moving rod 23 swings downwards under the action of gravity, so that the limiting block is propped against the first supporting surface 233 again. Preferably, an included angle formed by the connection line between the first protruding portion 232 and the pivot shaft of the second jack-up portion and the moving rod 23 is smaller than 90 degrees, and when the carbon ribbon take-up shaft 25 is locked with the adjustable limiting unit 24, the center of gravity of the moving rod 23 is not at the lowest position, so that a certain swing of the moving rod 23 under the action of gravity of the moving rod 23 after unlocking is further ensured.

In order to avoid that the rotation of the stopper is limited after the stopper is impacted by the first jack-up portion 231, it is preferable that, as shown in fig. 5 to 10, the portion of the movement rod 23 between the first jack-up portion 231 and the first protruding portion 232 is integrally formed or machined with a first through slot 234 capable of accommodating the stopper, and a side of the through slot facing the stopper is provided with a first notch 2341 having a width larger than that of the stopper. Therefore, when the first jack-up portion 231 impacts the stopper, the stopper can rotate in the first through groove 234, so as to ensure that the stopper can rotate without obstacle after being impacted by the first jack-up portion 231 until the first bayonet 241 is engaged with the first boss 232.

Preferably, as shown in fig. 5 to 10, the first bayonet 241 is provided in a through groove structure, and the through groove structure is provided such that the groove width decreases with the increase of the groove depth. So that when the first bayonet 241 is engaged with the first boss 232, the two are not separated under the action of no external force.

In some preferred embodiments, the movement lever 23 is arranged to trigger the adjustable stop unit 24 by movement such that the locking of the carbon ribbon take-up reel 25 in the second position by the adjustable stop unit 24 is also realized as: the movement rod 23 can trigger the adjustable limiting unit 24 through movement alternately, and the adjacent two triggers respectively lock the carbon ribbon winding shaft 25 at the second position by the adjustable limiting unit 24 and unlock the carbon ribbon winding shaft 25 from the adjustable limiting unit 24. For example, on the nth trigger, the carbon ribbon take-up reel 25 is locked by the adjustable limit unit 24; when triggering for the (n+1) th time, the carbon ribbon winding shaft 25 is unlocked from the adjustable limiting unit 24; when the (N+2) th trigger is performed, the carbon ribbon winding shaft 25 is locked by the adjustable limiting unit 24; when triggering for the (n+3) th time, the carbon ribbon winding shaft 25 is unlocked from the adjustable limiting unit 24; wherein N is an integer not less than 1, that is, when the carbon ribbon take-up shaft 25 is locked by the adjustable limiting unit 24 during the odd triggering, the carbon ribbon take-up shaft 25 is unlocked from the adjustable limiting unit 24 during the even triggering. Therefore, the adjustable limiting unit 24 can be locked and unlocked with the carbon ribbon winding shaft 25 by controlling the movement of the movement rod 23 to trigger the adjustable limiting unit 24, and the operation is convenient and quick.

As one implementation of the alternate triggering of the adjustable stop unit 24 by the movement bar 23, with continued reference to fig. 5 to 10, the first bayonet 241 is provided with at least two; and the movement lever 23 and the stopper are provided as: when the movable rod 23 triggers the adjustable limiting unit twice, the first jacking part 231 on the movable rod 23 sequentially impacts on one of the first bayonets 241 (as shown in fig. 7) and the position between the two adjacent first bayonets 241 of the limiting block (as shown in fig. 9), so that after the first jacking part 231 impacts on one of the first bayonets 241, the second supporting surface of the first protruding part 232 can abut on the other first bayonets 241 (as shown in fig. 8), and the carbon ribbon take-up shaft 25 is locked at the second position by locking the movable rod 23; after the first jack-up portion 231 is made to strike the position between the adjacent two first bayonets 241 of the stopper, the second supporting surface is made to strike the position between the adjacent two first bayonets 241 of the stopper. When the second supporting surface of the first protruding portion 232 of the moving rod 23 is impacted between two adjacent first bayonets 241 of the limiting block, the limiting block can continue to rotate until the limiting block abuts against the first supporting surface 233 due to the fact that the first bayonets 241 are not supported, and at this time, the limiting block and the first protruding portion 232 are in a mutually unlocked state. For example, as shown in fig. 5 to 10, when the first bayonet 241 is provided with two, the first bayonet 241 is provided on opposite ends of the stopper such that, for example, the first jack 231 hits against one of the first bayonet 241 (as shown in fig. 7) when hitting against the stopper for the first time, so that after the stopper rotates, the first protrusion 232 can be snapped onto the other first bayonet 241 (as shown in fig. 8) to lock the movement bar 23 to the stopper; when the first jack-up portion 231 impacts the stopper for the second time, the first jack-up portion 231 impacts the portion between the two first bayonets 241 of the stopper (as shown in fig. 9), so that after the second supporting surface of the first protruding portion 232 impacts the portion between the two first bayonets 241 of the stopper, the movement lever 23 and the stopper continue to rotate until the stopper abuts against the first supporting surface 233 of the first protruding portion 232, so that the movement lever 23 is unlocked from the stopper; when the first jack-up part 231 impacts the limiting block for the third time, the first jack-up part impacts one of the first bayonets 241, so that after the limiting block rotates, the first protruding part 232 can be clamped on the other first bayonet 241; when the first jack-up portion 231 impacts the stopper for the fourth time, the first jack-up portion 231 impacts the portion between the two first bayonets 241 of the stopper, so that after the second supporting surface of the first protruding portion 232 impacts the portion between the two first bayonets 241 of the stopper, the moving rod 23 and the stopper continue to rotate until the stopper abuts against the first supporting surface 233 of the first protruding portion 232, that is, when the first jack-up portion 231 impacts the stopper for an odd number of times, the first protruding portion 232 can be clamped on the first bayonets 241, and when the first jack-up portion 231 impacts the stopper for an even number of times, the moving rod 23 can be unlocked from the stopper. When the number of the first bayonets 241 is greater than two, the number of the first bayonets 241 is even, and the first bayonets 241 are uniformly distributed on the limiting block, so that when the first jacking portion 231 impacts one of the first bayonets 241, the first protruding portion 232 is clamped on the first bayonets 241 opposite to the first bayonets 241; when the first jack-up portion 231 hits a portion between the two first bayonets 241 on the stopper, the second supporting surface of the first boss 232 hits a portion between the two first bayonets 241 of the stopper opposite to the two first bayonets 241.

In a preferred embodiment, to ensure that the carbon tape winding shaft 25 on which the moving rod 23 is maintained is in the first position when no external force is applied to the moving rod 23, to ensure that the carbon tape winding mechanism 20 can be stably used without external force, as shown in fig. 5 to 10, the carbon tape winding mechanism 20 further includes a tension unit 26 for driving the carbon tape winding shaft 25 to move from the second position to the first position. As one example of the tensioning unit 26, with continued reference to fig. 5 to 10, the tensioning unit 26 includes: a torsion spring pivotably provided on the mounting bracket 21 or the moving lever 23 about a pivot axis of the moving lever 23; and a first stopper 262 provided on the mounting frame 21; the torsion spring has a first force arm 2611 and a second force arm 2612, where a side of the first force arm 2611 facing away from the second force arm 2612 abuts against the motion rod 23, and a side of the second force arm 2612 facing away from the first force arm 2611 abuts against the first stop 262, so that when the motion rod 23 swings under the driving action of an external force, after the external force is removed, the swinging motion rod 23 returns to its original position under the action of the torsion spring, and the original position is the first position (as shown in fig. 6). Preferably, the first stopper 262 is integrally formed or machined with a plurality of positioning grooves 2621 for receiving the second force arm 2612, the positioning grooves 2621 being arranged in an extending direction of the pivot shaft of the torsion spring and/or in an extending direction of the pivot shaft of the torsion spring perpendicular to the torsion spring in a plane parallel to the first force arm 2611 and the second force arm 2612, so that the spring force applied by the torsion spring to the movement lever 23 is adjusted by placing the second force arm 2612 in a different positioning groove 2621.

In a preferred embodiment, as shown in fig. 5-10, the carbon tape winding mechanism 20 further includes a first detection unit for detecting that the carbon tape winding shaft 25 is in the second position and/or is out of the first position. For example, the first detecting unit is implemented as a second photosensor 271 that detects whether the carbon-tape take-up shaft 25 is away from the first position, which can detect whether the carbon-tape take-up shaft 25 is away from the first position by detecting the swing position of the movement lever 23; as shown in fig. 9, the first detecting unit is implemented as a first detecting unit for detecting whether the carbon ribbon take-up shaft 25 is at the second position, and includes a first micro switch 272 and a first elastic piece 273 provided on the mounting frame 21, the first micro switch 272 and the first elastic piece 273 also being configured to detect whether the carbon ribbon take-up shaft 25 is at the second position by detecting the position of the moving lever 23, the first elastic piece 273 being configured such that when the carbon ribbon take-up shaft 25 moves to the second position due to the swing of the moving lever 23, the first elastic piece 273 is elastically deformed due to the pressure applied by the moving lever 23, so that the elastically deformed first elastic piece 273 is pressed to the first micro switch 272; for another example, the first detecting unit is implemented as a proximity switch, and when the proximity switch detects the moving rod 23, the carbon ribbon take-up reel 25 connected to the moving rod 23 moves from the first position to the second position; the first detection unit may also be implemented as a position or displacement sensor by detecting whether there is displacement of the movement rod 23; or as a pressure sensor which receives the pressure of the moving rod 23 when the carbon ribbon take-up shaft 25 on the moving rod 23 moves to the first position or the second position, as long as the first detecting unit can detect that the carbon ribbon take-up shaft 25 on the moving rod 23 moves away from the first position or moves to the second position, the specific implementation of the first detecting unit is not limited. Because the first detecting unit is provided, an operator can judge whether to stop using the carbon tape winding mechanism 20 according to the signal detected by the first detecting unit, or can connect the first detecting unit with a control system, and the control system is configured to control the carbon tape winding mechanism 20 to stop working or control a printer using the carbon tape winding mechanism 20 to stop printing when the first detecting unit detects that the carbon tape winding shaft 25 is at the second position and/or leaves the first position.

In a preferred embodiment, as shown in fig. 5 to 10, the printer further includes a carbon tape unreeling mechanism 30 capable of automatically restoring the unreeled carbon tape to a tensioned state, and/or a label unreeling mechanism 40 capable of automatically restoring the unreeled label tape to a tensioned state. So that the carbon belt and the label belt can be kept in a tensioning state in the using process, and the printing efficiency and the printing quality are ensured.

Fig. 5 to 10, 12 and 13 exemplarily show one embodiment of the carbon ribbon unreeling mechanism 30, and as shown, the carbon ribbon unreeling mechanism 30 includes a carbon ribbon unreeling shaft 31, a second damping unit 32, a first tensioning swing bar 33 and a first elastic member 34; wherein the carbon-tape unreeling shaft 31 is pivotably connected to the frame 100 with its pivot axis parallel to the pivot axis of the carbon-tape unreeling shaft 25; a second damping unit 32 and a first tension swing link pivotably provided on the carbon ribbon unreeling shaft 31, and the pivot shafts of the second damping unit 32 and the first tension swing link 33 are coaxial with the pivot shaft of the carbon ribbon unreeling shaft 31; the first tensioning swing rod 33 is also connected with the frame 100 through a first elastic piece 34; wherein the carbon ribbon unreeling shaft 31, the second damping unit 32 and the first tensioning swing link 33 are provided as: the carbon ribbon unreeling shaft 31 drives the second damping unit 32 to rotate around the pivot shaft of the carbon ribbon unreeling shaft 31 through friction, and the second damping unit 32 drives the first tensioning swing rod 33 to rotate around the pivot shaft of the carbon ribbon unreeling shaft 31 through friction. Thereby, the carbon ribbon 200 can be wound on the carbon ribbon unwinding shaft 31 and the carbon ribbon winding shaft 25, and the winding manner is that the carbon ribbon unwinding shaft 31 can drive the first tensioning swing rod 33 to rotate through the second damping unit 32, so that the first elastic piece 34 is in a stretching or compression state; when the friction force of the carbon tape unreeling shaft 31 applied to the first tensioning swing rod 33 through the second damping unit 32 is equal to the elastic force of the first elastic piece 34 applied to the first tensioning swing rod 33, the first tensioning swing rod 33 does not move along with the carbon tape unreeling shaft 31 any more, namely, a slipping phenomenon occurs between the first tensioning swing rod 33 and the second damping unit 32; when the carbon ribbon unreeling shaft 31 stops rotating, the first tensioning swing rod 33 rotates back to the original position under the action of the elastic force of the first elastic piece 34, and meanwhile, the second damping unit 32 drives the carbon ribbon unreeling shaft 31 to rotate back to the original position, so that the carbon ribbon unreeling shaft 31 rolls back the released carbon ribbon, and the carbon ribbon is kept in a tensioning state.

Fig. 5, 11 and 12 exemplarily show one embodiment of the label unreeling mechanism 40, and as shown, the label unreeling mechanism 40 includes a label unreeling shaft 41, a friction tape tensioning shaft 42, a second tensioning swing rod 43, a second elastic member 44, a third elastic member 45, a damping tape 48 and a first guide wheel 47; the label unreeling shaft 41, the friction belt tensioning shaft 42 and the second tensioning swing rod 43 can be pivotally connected to the frame 100, and the pivot shafts are arranged in parallel; the friction belt tensioning shaft 42 is connected to the frame 100 by a second elastic member 44; the second tensioning swing rod 43 is connected with the frame 100 through a third elastic piece 45; the friction belt tensioning shaft 42 and the second tensioning swing rod 43 are connected through a damping belt 48, and the friction belt tensioning shaft 42, the second tensioning swing rod 43 and the damping belt 48 are arranged in such a way that one of the friction belt tensioning shaft 42 and the second tensioning swing rod 43 drives the other to synchronously move through the damping belt 48; the first guide wheel 47 is connected to the second tensioning pendulum rod 43; the second elastic member 44, the third elastic member 45 and the damping belt 48 are arranged such that when the damping belt 48 moves the friction belt tensioning shaft 42 and the second tensioning swing link 43 in synchronization, one of the second elastic member 44 and the third elastic member 45 is in a stretched state and/or the other is in a compressed state, and the damping belt 48 drives the label unreeling shaft 41 to rotate in opposite directions with respect to one of the friction belt tensioning shaft 42 and the second tensioning swing link 43 by friction force, so that the friction force applied by the damping belt 48 to the label unreeling shaft 41 is increased or decreased. Preferably, the label holding roller 41 and the second tension swing link 43 are configured to rotate in opposite directions by the label tape 300, and when the second tension swing link 43 rotates in one direction, the friction force applied to the label holding roller 41 by the damping belt 48 by the second tension swing link 43 increases, and when the second tension swing link 43 rotates in the other direction, the friction force applied to the label holding roller 41 by the second tension swing link 43 by the damping belt 48 decreases. Thus, in use, the label tape 300 is wound on the label unwinding shaft 41 and the first guide wheel 47 in such a manner that the label unwinding shaft 41 rotates while the label winding shaft 51 moves the label tape 300, and at this time, the second tension swing link 43 compresses the third elastic member 45 while winding the damping tape 48 thereon, so that the friction force exerted on the label unwinding shaft 41 by the second tension swing link 43 through the damping tape 48 increases to slow down the rotation speed of the label unwinding shaft 41; when the label winding shaft 51 stops driving the label winding shaft 41 to rotate, the released label tape 300 is prevented from being too loose due to too high unwinding speed, the printing quality is reduced, and meanwhile, the friction tape tensioning shaft 42 swings under the driving of the damping tape 48, and the second elastic piece 44 is driven, so that the second elastic piece 44 is stretched; when the label winding shaft 51 stops winding the label tape 300, the elastic force of the stretched second elastic member 44 is released to drive the friction tape tensioning shaft 42 to reversely swing, the elastic force of the compressed third elastic member 45 is released to drive the second tensioning swing link 43 to reversely swing so as to maintain the label tape 300 in a tensioned state, and the damping tape 48 wound on the second tensioning swing link 43 is released to reduce the friction force applied to the label winding shaft 41 by the damping tape 48 while reversely swinging. Preferably, the first guide wheel 47 is arranged at the end of the second tensioning pendulum 43 remote from its pivot axis, for example connected to the second tensioning pendulum 43 by means of a connecting rod.

Preferably, referring to fig. 5, the label unreeling mechanism 40 further comprises a second detecting unit 49 for detecting whether the label unreeling shaft 41 has label paper. For example, the second detection unit 49 is implemented as a third photosensor 491 that detects whether the label-unwinding shaft 41 rotates, the third photosensor 491 detects a detection tray coaxially connected to the label-unwinding shaft 41 and having through holes uniformly distributed on the circumference thereof, and the third photosensor 491 determines whether label paper is still on the label-unwinding shaft 41 by detecting whether the detection tray moves; as another example, the second detection unit 49 is implemented as a second detection unit 49 for detecting whether the second tensioning swing link 43 moves, which includes a second micro switch 492 and a second elastic piece 493 provided on the frame 100, the second micro switch 492 and the second elastic piece 493 are also configured to detect whether the second tensioning swing link 43 is in an operating state by detecting a position of the second tensioning swing link 43, and the second elastic piece 493 is configured such that when the second tensioning swing link 43 is in an operating state, the second tensioning swing link 43 swings to compress the second elastic piece 493 under the driving of the label unreeling shaft 41 and the damping belt 48, so that the second elastic piece 493 presses the second micro switch 492; when the second tensioning swing rod 43 is in the non-working state, the second tensioning swing rod 43 is restored to the original position, and the second elastic sheet 493 is restored to the original position.

The carbon ribbon unreeling shaft 31 drives the second damping unit 32 to rotate around the pivot shaft of the carbon ribbon unreeling shaft 31 through friction, the second damping unit 32 drives the first tensioning swing rod 33 to rotate around one embodiment of the pivot shaft of the carbon ribbon unreeling shaft 31 through friction, and as shown in fig. 13, the second damping unit 32 comprises third damping sheets 322 clamped on two sides of the first tensioning swing rod 33 in the axial direction; the third damping fin 322 is clamped on the first tensioning swing rod 33 in the following implementation manner: one side of the third damping fin 322, which is far away from the first tensioning swing rod 33, is provided with a first friction plate 321, one first friction plate 321 is fixedly arranged on the carbon ribbon unreeling shaft 31, the other first friction plate 321 is pressed on the third damping fin 322 by a fourth elastic piece 323, and the first friction plates 321 are all non-rotatably arranged on the carbon ribbon unreeling shaft 31. Specifically, the fourth elastic member 323 is pressed against the first friction plate 321 by the first pressing plate 324 screwed to the carbon ribbon unwind shaft 31.

When the printer is used, as shown in fig. 12, the label released from the label unreeling shaft 41 is reeled up by the label unreeling shaft 51; the carbon tape released from the carbon tape unwinding shaft 31 is wound by the carbon tape winding shaft 25, the label paper released from the label unwinding shaft 41 and the carbon tape released from the carbon tape unwinding shaft 31 are printed while passing through the print head 401, and the printed label paper can be peeled off from the label tape by the peeling bar 402 on the printer to finish the printed label paper.

In the present invention, the elastic member may be implemented as an extension spring or a compression spring. The pivotable connection preferably connects the two by means of a bearing to reduce the friction forces experienced during rotation. Unless otherwise indicated, the connections and installations referred to herein are all fixed connections, which may be implemented as detachable connections or as non-detachable connections as in the prior art.

The foregoing are merely some embodiments of the invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.

Claims

1. The label base paper winding mechanism is characterized by comprising a first damping unit and a label winding shaft; wherein the label collecting scroll is rotatably arranged on the frame around a first pivot shaft;

the first damping unit is arranged on the label winding shaft and is arranged to transmit the power applied by the driving unit to the label winding shaft so as to drive the label winding shaft to pivotally move around a first pivot shaft;

the label unreeling mechanism can automatically restore the unreeled label tape to a tensioning state;

The label unreeling mechanism comprises:

the pivot shafts are parallel to each other and can be pivotally connected with a label unreeling shaft, a friction belt tensioning shaft and a second tensioning swing rod on the rack;

the second elastic piece and the third elastic piece are used for respectively connecting the friction belt tensioning shaft and the second tensioning swing rod with the frame;

a damping belt connecting the friction belt tensioning shaft with the second tensioning swing rod;

the first guide wheel is connected to the second tensioning swing rod; wherein,

the friction belt tensioning shaft, the second tensioning swing rod and the damping belt are arranged so that one of the friction belt tensioning shaft and the second tensioning swing rod drives the other one to synchronously move through the damping belt, the second elastic piece, the third elastic piece and the damping belt are arranged so that when the damping belt drives the friction belt tensioning shaft and the second tensioning swing rod to synchronously move, one of the second elastic piece and the third elastic piece is in a stretching state and/or the other one is in a compression state, and the damping belt drives the label unreeling shaft to reversely rotate with one of the friction belt tensioning shaft and the second tensioning swing rod through friction force, so that friction force applied by the damping belt to the label unreeling shaft is increased or reduced;

The label take-up spool is coaxially arranged with the first damping unit.

2. The label base stock winding mechanism of claim 1, wherein the first damping unit comprises a first damping sheet and a second damping sheet; wherein,

the second damping piece is connected to the label winding shaft, the first damping piece and the second damping piece are arranged in a mode that friction force between the first damping piece and the second damping piece enables the first damping piece to drive the second damping piece and the label winding shaft to pivotally move around the first pivot shaft under the driving of the driving unit.

3. The label base paper winding mechanism is characterized by comprising a driving unit, a first damping unit and a label winding shaft, wherein the driving unit is arranged on a rack, and the label winding shaft is arranged on the rack in a pivoting manner around a first pivot shaft; wherein,

the first damping unit is arranged on the driving unit, and the first damping unit and the driving unit are arranged in a way that under the condition that the driving unit drives the first damping unit to move, the first damping unit can apply friction force on the label winding shaft to drive the label winding shaft to pivotally move around the first pivot shaft; or (b)

The first damping unit is arranged on the label winding shaft, and the driving unit is arranged to drive the first damping unit and the label winding shaft to pivotally move around a first pivot shaft through the friction force exerted on the first damping unit;

the label unreeling mechanism comprises:

the first guide wheel is connected to the second tensioning swing rod; wherein,

At least two of the driving unit, the label collecting shaft and the first damping unit are coaxially arranged.

4. A label base stock winding mechanism according to claim 3, wherein the drive unit comprises a first rotary motor provided on the frame and a transmission unit coaxially connected to a rotary shaft of the first rotary motor, the first damping unit is provided on the transmission unit, and the first damping unit is configured to drive the label winding shaft to pivotally move about a first pivot shaft by a frictional force applied to the label winding shaft by the first damping unit; or (b)

The driving unit comprises a first rotating motor arranged on the frame, the first damping unit is coaxially connected with a rotating shaft of the first rotating motor, and the first damping unit is arranged to drive the label winding shaft to pivotally move around a first pivot shaft through frictional force exerted on the label winding shaft by the first damping unit; or (b)

The driving unit comprises a transmission unit arranged on the frame, the first damping unit is arranged on the transmission unit, and the first damping unit is arranged to drive the label winding shaft to pivotally move around a first pivot shaft through frictional force applied on the label winding shaft.

5. A label base stock winding mechanism according to claim 3, wherein the drive unit comprises a first rotary motor provided on the frame and a transmission unit coaxially connected to a rotary shaft of the first rotary motor, the transmission unit being configured to drive the first damping unit and the label winding shaft to pivotally move about a first pivot shaft by a frictional force applied thereto; or (b)

The driving unit comprises a first rotating motor arranged on the frame, and the first rotating motor is arranged to drive the first damping unit and the label winding shaft to rotate around a first pivot shaft through the friction force exerted on the first damping unit by the first rotating motor; or (b)

The driving unit comprises a transmission unit arranged on the frame, and the transmission unit is arranged to drive the first damping unit and the label winding shaft to rotate around a first pivot shaft through friction force applied on the first damping unit.

6. A printer provided with a label base stock winding mechanism comprising a frame and the label base stock winding mechanism of any one of claims 1 to 5.

7. The printer of claim 6, further comprising a first detection unit for detecting a state of motion of the label take-up shaft.

8. The printer of claim 6, further comprising a carbon tape unwind mechanism that enables one-handed removal of the carbon tape roll from the carbon tape wind-up spool, the carbon tape unwind mechanism enabling automatic recovery of the unwound carbon tape from tension.

9. The printer of claim 8, wherein the carbon tape take-up mechanism comprises:

the movable rod and the adjustable limiting unit are arranged on the frame;

and a carbon tape take-up reel pivotally connected to the motion bar; wherein,

the motion bar is arranged to trigger the adjustable limiting unit through motion so that the carbon ribbon winding shaft is locked at a second position by the adjustable limiting unit.

10. The printer of claim 9, further comprising at least one of a tensioning unit for driving the carbon tape take-up spool from the second position to the first position, and a second detection unit for detecting that the carbon tape take-up spool is in the second position and/or away from the first position.

11. Printer according to any one of claims 8 to 10, wherein said carbon ribbon unreeling mechanism comprises:

a carbon tape unreeling shaft, the pivot shaft of which is parallel to the carbon tape reeling shaft and is pivotally connected to the rack;

A second damping unit and a first tensioning swing rod which are arranged on the carbon ribbon unreeling shaft in a pivotable manner around a pivoting shaft of the carbon ribbon unreeling shaft;

and a first elastic piece connecting the first tensioning swing rod with the frame; wherein,

the carbon ribbon unreeling shaft, the second damping unit and the first tensioning swing rod are arranged in a mode that: the carbon ribbon unreeling shaft drives the second damping unit to rotate around the pivot shaft of the carbon ribbon unreeling shaft through friction force, and the second damping unit drives the first tensioning swing rod to rotate around the pivot shaft of the carbon ribbon unreeling shaft through friction force.