CN-224224766-U - Thermal transfer printer

Abstract

The utility model discloses a thermal transfer printer. The printer includes a take-up and pay-off spool member, a printhead hold-down member, a printhead member, a print channel member, and a printhead jack member. The printing head pressing component is used for pressing the printing head component above the ink ribbon and the printing medium, and the printing head jacking component is used for jacking the printing head component so as to separate the ink ribbon from the printing medium. The utility model can realize synchronous transmission of the ribbon and the printing medium during normal printing, and separate the ribbon from the printing medium when no printing content exists, and the printing medium is independently transmitted without moving the ribbon, thereby achieving the purpose of saving the ribbon and reducing the cost. The printing device has the advantages that the printing device can be used for realizing the free conversion of a single channel and a double channel skillfully through the arrangement of the middle partition plate in the printing channel part, solving the problem of printing a narrow printing medium with a double channel and a wide printing medium with a single channel, greatly improving the printing efficiency and expanding the application range of a printer.

Inventors

• LI JIANGUO

Assignees

• 北京硕方电子科技有限公司

Dates

Publication Date

20260512

Application Date

20250521

Claims (10)

1. 1. A thermal transfer printer is characterized by comprising a frame and a main vertical plate arranged on one side of the frame, wherein a winding and unwinding shaft component, a printing head pressing component, a printing head component, a printing channel component and a printing head jacking component are sequentially arranged on the main vertical plate from top to bottom, The winding and unwinding reel component is used for installing a ribbon cartridge and driving the ribbon to realize winding and unwinding actions, and the ribbon from which the ribbon cartridge is drawn is positioned between the printing head component and the printing channel component; The printing head part comprises a printing head support shaft, a printing head bracket, a thermal printing head, a return spring and a return pulling piece, wherein the printing head support shaft is rotatably and penetratingly arranged on the main vertical plate, the part positioned at the front end of the main vertical plate is provided with the printing head bracket, the part positioned at the rear end of the main vertical plate is provided with the return spring and the return pulling piece, the printing head bracket can rotate along with the printing head support shaft, and the thermal printing head is fixed at the free rotating end of the printing head bracket; The printing head pressing component comprises a pressing rotating shaft, a pressing handle, a pressing support and a telescopic pressing end, wherein the pressing rotating shaft is rotatably arranged on the main vertical plate in a penetrating mode, the pressing handle and the pressing support are arranged at the front end of the main vertical plate, the telescopic pressing end is arranged on the pressing support, the pressing handle drives the pressing rotating shaft and the pressing support to rotate under the action of external force so as to drive the telescopic pressing end to rotate, the telescopic pressing end is propped against the printing head support of the printing head component when rotating downwards, the printing head support is driven to rotate downwards until a heating surface of the thermal printing head presses a color ribbon and a printing medium, the telescopic pressing end is separated from the printing head support when rotating upwards, and the printing head support returns upwards under the action of a return spring and a return pulling piece; the printing channel part is used for providing a channel for the printing medium and promoting the printing medium to be conveyed and comprises a channel support fixed at the lower part of the main vertical plate; The printing head jacking component comprises a cam shaft, a cam arranged on the cam shaft, a power gear arranged at the end part of the cam shaft, and a push rod component opposite to the cam, wherein the cam shaft is arranged at the bottom of the front side wall and the rear side wall of the channel support through a shaft sleeve, the push rod component is vertically limited at the inner side of the side wall of the channel support and can slide up and down, the lower end of the push rod component is contacted with the cam surface of the cam, the upper end of the push rod component is contacted with the bottom of the printing head support, the cam can drive the push rod component to slide upwards when driven by the power gear to jack up in the telescopic range of the telescopic compression end, so that the printing head support is enabled to be separated from a printing medium, the printing medium is continuously conveyed at the moment, the printing medium stops conveying, and the purpose of saving the printing tape is achieved.
2. 2. The thermal transfer printer according to claim 1, wherein the retractable compression head comprises a hemispherical end, a compression spring, an adjusting knob and a central shaft, the lower end of the central shaft is fixedly connected with the upper end of the hemispherical end, the upper end of the central shaft extends into a central stepped hole at the lower part of the compression bracket, the upper end of the central shaft is provided with an expansion part for preventing the central shaft from falling out of the central stepped hole, the upper part of the inner side of the adjusting knob is provided with an internal thread for being connected with the external thread at the lower part of the compression bracket, the lower part of the inner side of the adjusting knob is provided with a counter bore for the upper end of the compression spring to be abutted against, the lower end of the compression spring is connected with the upper end face of the hemispherical end, the hemispherical end can be elastically retracted under the action of the compression spring, and the adjusting knob can realize tightness adjustment of the compression spring.
3. 3. The thermal transfer printer according to claim 2, wherein the head jack member includes two cams and two jack assemblies corresponding thereto, respectively, the two jack assemblies being vertically defined inside front and rear side walls of the channel bracket, respectively, and a bottom end of the jack assembly being provided with a rolling bearing in contact with the cam surface.
4. 4. The thermal transfer printer of claim 1, wherein the print channel assembly further comprises a feed rubber roll assembly, a print rubber roll assembly, and a discharge rubber roll assembly mounted on an upper portion of the channel mount, and two floating rubber roll assemblies and a slide assembly mounted on the main riser; The feeding rubber roll assembly, the printing rubber roll assembly and the discharging rubber roll assembly comprise rubber roll shafts which are arranged in parallel and gears which are fixed at the end parts of the rubber roll shafts and meshed with each other, and the feeding rubber roll assembly, the printing rubber roll assembly and the discharging rubber roll assembly are used for synchronously conveying printing media; The floating rubber roll assembly comprises a supporting shaft, a floating plate, a long shaft and a floating torsion spring, wherein the supporting shaft is fixed on the main vertical plate, the floating plate is rotatably arranged on the supporting shaft, the long shaft is arranged at the floating end part of the floating plate, the floating torsion spring is sleeved on the supporting shaft, one end of the floating torsion spring is fixed with the supporting shaft, and the other end of the floating torsion spring is contacted with the floating plate and drives the floating plate to be pressed down; The sliding assembly comprises a sliding plate, a sliding plate supporting shaft and a rack, wherein at least two slope grooves are formed in the upper end face of the sliding plate, floating shafts extending into the slope grooves are arranged on the two floating plates, at least two strip holes are formed in the middle of the sliding plate, the sliding plate supporting shaft is arranged in each strip hole, the other end of the sliding plate supporting shaft is fixed on the main vertical plate, one end of the rack is fixedly connected with the sliding plate, teeth are arranged at the other end of the rack, the teeth are driven to horizontally move under the action of external power, the sliding plate horizontally moves along the strip holes, the two floating plates are lifted or lowered under the action of the slope grooves, printing media are installed when lifted, and the printing media are compressed when lowered.
5. 5. The thermal transfer printer of claim 4 wherein the print channel assembly further comprises a centering clamp assembly comprising a threaded shaft and guide shafts on either side thereof, and two clamp plates connected perpendicularly to the threaded shaft and guide shafts; The threaded shaft adopts a bidirectional threaded shaft, two ends of the threaded shaft are respectively rotatably erected on the front side wall and the rear side wall of the channel support, and a threaded shaft knob is arranged at the end part extending out of the channel support; The guide shafts comprise a first guide shaft and a second guide shaft, the first guide shaft and the second guide shaft are respectively rotatably erected on the front side wall and the rear side wall of the channel support, and a first knob and a second knob are respectively arranged at the end part extending out of the channel support; The clamping plates are provided with through holes corresponding to the threaded shafts, the first guide shafts and the second guide shafts respectively, threaded sleeves meshed with the threads of the threaded shafts are arranged at the through holes corresponding to the threaded shafts, the threaded sleeves on the two clamping plates correspond to the bidirectional threads of the threaded shafts respectively, and the upper parts of the two clamping plates are respectively provided with at least two clamping columns, and the threaded shaft is driven to rotate by rotating the threaded shaft knob, so that the two clamping plates move oppositely or reversely under the action of the bidirectional threads, and the distance between the clamping columns on the two clamping plates is adjusted according to the width of the printing medium.
6. 6. The thermal transfer printer according to claim 5, wherein the centering clamping assembly further comprises an intermediate partition plate located between the two clamping plates, one end of the intermediate partition plate is rotatably arranged on the first guide shaft, avoidance grooves for the threaded shaft and the second guide shaft to pass through are respectively formed in the middle of the intermediate partition plate, the bottom of the other end of the intermediate partition plate is connected with a pull ring, the upper end of the pull ring is fixed on the side wall of the channel support, a horizontal flanging is formed in the bottom of the intermediate partition plate, a separation column is arranged on the upper portion of the intermediate partition plate, a rotary lug is fixed in the middle of the second guide shaft, the free end of the rotary lug abuts against the horizontal flanging, the second knob is rotated to drive the second guide shaft to rotate, the rotary lug presses down the horizontal flanging, and then drives the intermediate partition plate to rotate downwards, so that the intermediate partition plate does not affect the installation and the transmission of printing media between the two clamping plates, the printer is single-channel printing, after the second knob is reversely rotated, the rotary lug does not apply pressure to the horizontal flanging, and the two channels are respectively pressed down on the two sides of the partition plate, and the printer is flush with the two sides of the printer.
7. 7. The thermal transfer printer of claim 5, wherein a sliding gear is disposed at an end of the first guide shaft away from the first knob, and the sliding gear is engaged with teeth of the rack, so that the first knob is rotated to drive the rack to move horizontally.
8. 8. The thermal transfer printer of claim 4, wherein the print channel assembly further comprises a drive assembly disposed at a rear end of the main riser, the drive assembly comprising a mounting plate and a main motor and a sub motor disposed on the mounting plate, output shafts of the main motor and the sub motor both passing through the mounting plate, the mounting plate further having a first reduction gear and a second reduction gear respectively engaged with a main motor output gear and a sub motor output gear, the first reduction gear further engaged with a gear in the print rubber roller assembly for realizing transfer of print media, and the second reduction gear further engaged with a power gear in the printhead jack assembly for realizing a ribbon saving function.
9. 9. The thermal transfer printer of claim 1, wherein the take-up and pay-off spool assembly comprises a take-up spool assembly, a pay-off spool assembly and a take-up drive assembly, the take-up spool assembly comprises a take-up metal shaft, a take-up gear, a first damping spring and a first shaft sleeve, the take-up metal shaft is rotatably mounted on the main vertical plate, the take-up gear is mounted on a portion located at the rear end of the main vertical plate, the first damping spring and the first shaft sleeve are mounted on a portion located at the front end of the main vertical plate, and the first shaft sleeve can rotate around the take-up metal shaft under the action of the first damping spring; the unreeling shaft assembly comprises an unreeling metal shaft, a second damping spring and a second shaft sleeve, one end of the unreeling metal shaft is fixed on the main vertical plate, the second damping spring and the second shaft sleeve are arranged at the other end of the unreeling metal shaft, and the second shaft sleeve can rotate around the unreeling metal shaft under the action of the second damping spring; The winding driving assembly comprises a winding driving motor and a winding reduction gear, an output gear of the winding driving motor is meshed with the winding reduction gear, and the winding reduction gear is meshed with the winding gear to realize winding and unwinding actions.
10. 10. The thermal transfer printer according to any one of claims 1 to 9, further comprising a pre-feeding module mounted on the frame, wherein the pre-feeding module comprises a support frame, a driving rubber roller shaft, a swinging shaft, a photoelectric sensing shaft, a photoelectric plate and a power motor, the driving rubber roller shaft is rotatably fixed on the support frame, one end of the driving rubber roller shaft is in contact with the swinging shaft counter roller, a rubber roller gear is arranged at the other end of the driving rubber roller shaft, the rubber roller gear is meshed with an output shaft of the power motor, the swinging shaft is rotatably arranged on the support frame through a swinging plate and is pressed down on the driving rubber roller shaft through a first torsion spring, one end of the photoelectric sensing shaft is rotatably mounted on the support frame, the other end of the photoelectric sensing shaft is suspended through a sensing plate, the photoelectric plate is arranged on the support frame and can form signal sensing with a sensing plate of the photoelectric sensing shaft, a suspension end of the photoelectric sensing shaft is pressed down below an upper end face of the driving rubber roller shaft by a second torsion spring, a printing medium is gradually sensed from the upper end face of the driving rubber roller shaft to the driving motor through the sensing plate, and then passes through the sensing plate under the sensing plate, and when the suspension shaft passes through the sensing shaft, the suspension shaft is gradually raised up, and the printing medium is gradually sensed by the medium when the medium is driven to the driving plate.

Description

Thermal transfer printer Technical Field The utility model relates to the technical field of printers, in particular to a thermal transfer printer. Background Currently, all existing thermal transfer printers synchronously convey a printing medium and an ink ribbon during printing, that is, thermal transfer of printing contents is realized in the process of synchronously conveying the printing medium and the ink ribbon. This results in the ribbon still being transported when there is no print, resulting in low ribbon utilization and significant wastage. In addition, the existing thermal transfer printers are all single-channel conveying printing media, printing of one printing medium can be completed at a time, printing efficiency is low, and time consumption is long. Therefore, the above-mentioned existing thermal transfer printer has inconvenience and defects in terms of structure, method and use, and further improvement is needed. How to create a new thermal transfer printer, so that the problem of serious waste of the ribbon can be overcome, the conversion of single channel and double channels can be realized, the high efficiency of double-channel printing of narrow and small consumables can be met, the printing requirement of wide and large consumables can be met, and the thermal transfer printer becomes a target of great need for improvement in the current industry. Disclosure of utility model The utility model aims to solve the technical problem of providing a thermal transfer printer, which can overcome the problem of serious waste of an ink ribbon, can realize the conversion of single channel and double channels, can meet the high efficiency of double-channel printing of narrow and small consumables, and can also meet the printing requirement of wide and large consumables, thereby overcoming the defects of the traditional thermal transfer printer. In order to solve the technical problems, the utility model provides a thermal transfer printer which comprises a frame and a main vertical plate arranged on one side of the frame, wherein a winding and unwinding reel component, a printing head pressing component, a printing head component, a printing channel component and a printing head jacking component are sequentially arranged on the main vertical plate from top to bottom, The winding and unwinding reel component is used for installing a ribbon cartridge and driving the ribbon to realize winding and unwinding actions, and the ribbon from which the ribbon cartridge is drawn is positioned between the printing head component and the printing channel component; The printing head part comprises a printing head support shaft, a printing head bracket, a thermal printing head, a return spring and a return pulling piece, wherein the printing head support shaft is rotatably and penetratingly arranged on the main vertical plate, the part positioned at the front end of the main vertical plate is provided with the printing head bracket, the part positioned at the rear end of the main vertical plate is provided with the return spring and the return pulling piece, the printing head bracket can rotate along with the printing head support shaft, and the thermal printing head is fixed at the free rotating end of the printing head bracket; The printing head pressing component comprises a pressing rotating shaft, a pressing handle, a pressing support and a telescopic pressing end, wherein the pressing rotating shaft is rotatably arranged on the main vertical plate in a penetrating mode, the pressing handle and the pressing support are arranged at the front end of the main vertical plate, the telescopic pressing end is arranged on the pressing support, the pressing handle drives the pressing rotating shaft and the pressing support to rotate under the action of external force so as to drive the telescopic pressing end to rotate, the telescopic pressing end is propped against the printing head support of the printing head component when rotating downwards, the printing head support is driven to rotate downwards until a heating surface of the thermal printing head presses a color ribbon and a printing medium, the telescopic pressing end is separated from the printing head support when rotating upwards, and the printing head support returns upwards under the action of a return spring and a return pulling piece; the printing channel part is used for providing a channel for the printing medium and promoting the printing medium to be conveyed and comprises a channel support fixed at the lower part of the main vertical plate; The printing head jacking component comprises a cam shaft, a cam arranged on the cam shaft, a power gear arranged at the end part of the cam shaft, and a push rod component opposite to the cam, wherein the cam shaft is arranged at the bottom of the front side wall and the rear side wall of the channel support through a shaft sleeve, the push rod component is vertically limited at the inner side of the side