CN219028928U - Thermal printer capable of elastically pressing paper - Google Patents
Thermal printer capable of elastically pressing paper Download PDFInfo
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- CN219028928U CN219028928U CN202223297319.4U CN202223297319U CN219028928U CN 219028928 U CN219028928 U CN 219028928U CN 202223297319 U CN202223297319 U CN 202223297319U CN 219028928 U CN219028928 U CN 219028928U
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Abstract
The utility model provides a thermal printer capable of elastically pressing paper, which comprises a base, a cover body and a printing component, wherein a thermal sheet and a rubber roller are opposite to each other and form a paper feeding channel, and the paper feeding channel is communicated with a paper outlet; the base is provided with the guide lateral wall at the opposite side of printing the subassembly for the exit slot, and the lid is provided with the paper pressing subassembly at the opposite side of printing the subassembly for the exit slot, and the paper pressing subassembly includes paper pressing piece and elastic component, and paper pressing piece articulates in the lid, and the elastic component is connected with paper pressing piece and applys the pressure to paper pressing piece towards the pressure of guide lateral wall and hold the power, and the paper feed passageway passes paper pressing piece and guide lateral wall. When the printing paper passes through the paper feeding channel and passes through the paper pressing block and the guide side wall, the printing paper is elastically abutted with the paper pressing block which can elastically rotate, and the pressing force towards the guide side wall is applied, so that the paper feeding stability and the printing quality are improved by using the pressing force on the printing paper even when the paper roll rotates.
Description
Technical Field
The utility model relates to the field of thermal printing, in particular to a thermal printer capable of elastically pressing paper.
Background
With the popularization and application of the thermal printer, the thermal printer is not only used in automatic cash dispensers of banks, cash registers of supermarkets, catering industry and delivery places of electronic commerce, but also used in thermal transfer printers adopting a carbon ribbon thermal transfer principle and thermal printers adopting thermal imaging of thermal paper, and has higher requirements on the use stability and operation convenience of the thermal printers under the rapid increase of printing in electronic commerce industry and express industry.
The thermal printer is generally provided with a base, a cover body, a rubber roller and a thermal sensitive sheet, and the thermal sensitive sheet is heated by the thermal sensitive sheet when printing paper enters the position between the rubber roller and the thermal sensitive sheet, so that imaging of image characters is realized. The printing paper is generally coiled in a paper roll shape and is placed in a paper bin of the printer, paper feeding of the printing paper is driven by the rubber roller, then the printing paper roll is driven to rotate, when the printing speed is high, the rotation of the paper roll is relatively high, when the paper roll residual quantity is high, the rotation of the paper roll can be performed smoothly, but when the paper roll residual quantity is low, the rotation stability of the paper roll is affected by the reduction of the weight of the paper roll, and then the paper roll is easy to shake during rotation, so that paper is discharged to deviate, and the printing quality is affected.
Disclosure of Invention
The utility model aims to provide a thermal printer which utilizes elastic paper pressing to improve paper feeding stability
In order to achieve the aim of the utility model, the utility model provides a thermal printer for elastic paper pressing, which comprises a base, a cover body and a printing component, wherein the printing component comprises a rubber roller and a thermal sensitive sheet; the base is provided with the guide lateral wall at the opposite side of printing the subassembly for the exit slot, and the lid is provided with the paper pressing subassembly at the opposite side of printing the subassembly for the exit slot, and the paper pressing subassembly includes paper pressing piece and elastic component, and paper pressing piece articulates in the lid, and the elastic component is connected with paper pressing piece and applys the pressure to paper pressing piece towards the pressure of guide lateral wall and hold the power, and the paper feed passageway passes paper pressing piece and guide lateral wall.
According to the scheme, when the printing paper passes through the paper feeding channel and passes through the paper pressing block and the guide side wall, the printing paper is elastically abutted with the paper pressing block capable of elastically rotating, and the pressing force towards the guide side wall is applied, so that the paper feeding stability and the printing quality are improved by using the pressing force on the printing paper even when the paper roll rotates.
Still further scheme is, the paper pressing assembly still includes the fixed bolster, and the fixed bolster is fixed to be set up on the lid, and the paper pressing piece articulates in the fixed bolster, and elastic component elasticity butt is between fixed bolster and paper pressing piece.
Still further scheme is, the paper pressing assembly still includes the pivot, and the pivot is arranged along the level, and the paper pressing piece is articulated with the fixed bolster through the pivot.
From the above, through the fixed bolster that fixes the setting in order to improve the assembly stability of platen, and conveniently in the position assembly of platen, moreover through the pivot of arranging along the level, platen rotates around the horizontal direction then, platen can be steadily towards the printing paper press fit then, in order to improve printing paper feed stability.
Further, the elastic piece is a torsion spring, and the torsion spring is sleeved on the rotating shaft.
Still further, the fixed bolster is provided with first constant head tank in the middle part, and the block is provided with the second constant head tank in the middle part, and the first end of torsional spring is adjacent in first constant head tank, and the second end of torsional spring is adjacent in the second constant head tank.
From the above, can provide stable elasticity pressure holding force for the paper pressing piece through the torsional spring, and set up the both ends of torsional spring in corresponding constant head tank, can further improve the assembly stability of torsional spring.
Still further, the rubber roller is rotatably arranged on the fixed bracket, and the heat sensitive sheet is arranged on the base.
From the above, the rubber roller is assembled on the fixed bracket, and the paper pressing block is hinged on the fixed bracket, so that the position matching degree of the rubber roller and the paper pressing block is improved.
Still further, the base is provided with the paper storehouse, and the paper feed passageway communicates between paper storehouse and play paper mouth.
From the above, the printing paper roll can be placed in the paper bin, and then the printing paper can be stably fed and input to the thermal imaging at the position of the thermal sensitive sheet when passing between the paper pressing block and the guide side wall along the paper feeding channel.
In a further scheme, the paper pressing block is provided with a guide inclined surface facing the guide side wall, the guide inclined surface is in clearance fit with the guide side wall, and the guide inclined surface and the guide side wall are inclined to the plane where the thermosensitive plate is located.
Still further, the paper pressing block is provided with the guide inclined plane towards the guide side wall, and the fixed bolster is provided with the upper inclined plane towards the guide side wall, and the upper inclined plane is located the top of guide inclined plane, guide inclined plane and guide side wall clearance fit, and guide inclined plane, upper inclined plane and guide side wall all incline in the plane that the thermal sensitive plate is located.
From the above, through the inclined matching of the guide inclined plane, the upper inclined plane and the guide side wall, the printing paper is enabled to be fed in the paper feeding channel more smoothly.
In a further scheme, the paper pressing block is provided with a positioning step above the guide inclined plane, the upper inclined plane is positioned in the positioning step, and the side wall of the positioning step can be abutted with the back wall of the upper inclined plane.
From the above, through the cooperation of location step and fixed bolster, then improve the position stability of platen, and improve the relative position stability of guide inclined plane, upper inclined plane and guide lateral wall, and then the printing paper can be steadily in the paper feed passageway department paper feed.
Drawings
FIG. 1 is a block diagram of an embodiment of a thermal printer of the present utility model.
Fig. 2 is a block diagram of an embodiment of the thermal printer of the present utility model after the cover is opened.
Fig. 3 is a block diagram of an embodiment of the thermal printer of the present utility model with the cover omitted.
FIG. 4 is a block diagram of a platen assembly in an embodiment of a thermal printer according to the present utility model.
FIG. 5 is an exploded view of a platen assembly in an embodiment of a thermal printer according to the present utility model.
Fig. 6 is a cross-sectional view of an embodiment of the thermal printer of the present utility model with a print paper roll larger.
Fig. 7 is a cross-sectional view of an embodiment of the thermal printer of the present utility model with a print paper roll smaller.
Fig. 8 is an enlarged view at a in fig. 7.
The utility model is further described below with reference to the drawings and examples.
Detailed Description
Referring to fig. 1 to 8, a thermal printer 1 includes a base 11, a cover 12, and a printing assembly, the printing assembly includes a glue roller 121 and a thermal sheet 112, the base 11 is provided with a paper bin 111, the cover 12 is hinged to the base 11 and covers over the paper bin 111, a paper outlet 101 is formed between the cover 12 and the base 11, the thermal sheet 112 is provided on the base 11, the glue roller 121 is rotatably provided on the cover 12, a gear is provided at an end of the glue roller 121 for connecting with a motor in the base 11 and being driven to rotate, the thermal sheet 112 and the glue roller 121 are opposite to form a paper feeding channel, the paper feeding channel is communicated between the paper bin 111 and the paper outlet 101, after the printing paper 102 passes through the paper feeding channel and is clamped by the thermal sheet 112 and the glue roller 121, the image and text imaging is then realized, and the paper feeding of the printing paper 102 towards the paper outlet 101 is realized through the rotation of the glue roller 121.
The paper outlet 101 is located above the rubber roller 121 and the thermal sensitive sheet 112, the base 11 is provided with a guiding side wall 114 at the other side of the printing component opposite to the paper outlet 101, that is, the guiding side wall 114 is located below the thermal sensitive sheet 112, the cover 12 is provided with a paper pressing component 2 at the other side of the printing component opposite to the paper outlet 101, that is, the paper pressing component 2 is located below the rubber roller 121, and the guiding side wall 114 is provided with a paper detecting sensor 115.
The platen assembly 2 includes a fixing bracket 21, a platen 22, a rotating shaft 23 and an elastic member 24, the fixing bracket 21 is fixedly arranged on the cover 12, the rubber roller 121 is rotatably arranged on the fixing bracket 21, an upper inclined surface 211 is arranged below the rubber roller 121 on the fixing bracket 21, two ends of the upper inclined surface 211 in the horizontal direction are respectively provided with a connecting wall 213, and the connecting wall 213 is provided with a connecting hole.
The paper pressing block 22 is provided with connecting plates 223 at two ends above, the connecting plates 223 are provided with connecting holes, the connecting plates 223 are located between the two connecting walls 213, the rotating shaft 23 is arranged along the horizontal direction and penetrates through the two connecting plates 223 and the two connecting walls 213, then the paper pressing block 22 is hinged to the fixed support 21, the paper pressing block 22 can rotate around the horizontal direction, the elastic piece 24 is a torsion spring, the torsion spring is sleeved on the rotating shaft 23, the fixed support 21 is provided with a first positioning groove 212 in the middle, the paper pressing block 22 is provided with a second positioning groove 224 in the middle, the first end of the torsion spring is adjacent in the first positioning groove 212, and the second end of the torsion spring is adjacent in the second positioning groove 224.
The platen 22 is provided with a guide slope 221 facing the guide sidewall 114 below the rotation shaft 23, the platen 22 is provided with a positioning step 222 above the guide slope 221, the upper slope 211 is located in the positioning step 222 and above the guide slope 221, the upper slope 211 and the guide slope 221 face the guide sidewall 114, the guide slope 221 and the guide sidewall 114 are in clearance fit, the guide slope 221, the upper slope 211 and the guide sidewall 114 are inclined to the plane of the thermal sensitive sheet 112, and the guide slope 221, the upper slope 211 and the guide sidewall 114 extend along the horizontal paper width, and the sidewall of the positioning step 222 can be abutted with the back wall of the upper slope 211.
The thermal printer 1 further includes a paper cutting assembly provided at the paper outlet 101, the paper cutting assembly including a main cutter module 113 and a sub-cutter 122, the main cutter module 113 being provided on the base 11, the sub-cutter 122 being provided on the fixed bracket 21.
Referring to fig. 6, when the paper roll 103 is large in the remaining amount, the printing paper 102 enters the paper feed path and is located between the platen 22 and the guide sidewall 114, the printing paper 102 abuts against the guide slope 221, the elastic member 24 applies a pressing force to the platen 22 toward the guide sidewall 114, and then the guide slope 221 applies a pressing force to the printing paper 102 toward the guide sidewall 114.
Referring to fig. 7 and 8, when the paper roll 103 has a small residual amount, the reduction in the weight of the paper roll 103 affects the rotational smoothness of the paper roll 103, but since the guide slope 221 still applies a pressing force to the printing paper 102 toward the guide sidewall 114, the printing paper 102 still keeps smooth feeding while feeding, and thus the printing stability is improved.
Of course, the above embodiment is just a preferred embodiment of the present utility model, and more variations can be made in specific applications, for example, the platen is directly hinged to the cover, the elastic member is connected to the platen and applies a pressing force to the platen toward the guiding sidewall, so that the elastic platen can be implemented, in addition, the arrangement of the elastic member has various ways, and besides the torsion spring, a spring or an elastic member made of elastic material can be adopted, so long as the elastic force can be applied to the platen, and in some other types of thermal printers, the rubber roller 121 can also be arranged on the base 11, and the thermal sheet 112 is arranged on the cover 12, which also does not affect the main utility model of the present utility model.
From the above, when the printing paper passes through the paper feeding channel and passes through the paper pressing block and the guide side wall, the printing paper is elastically abutted by the elastically rotatable paper pressing block, and the pressing force towards the guide side wall is applied, so that the paper feeding stability and printing quality are improved by using the pressing force on the printing paper even when the paper roll rotates.
Claims (10)
1. The thermal printer comprises a base, a cover body and a printing assembly, wherein the printing assembly comprises a rubber roller and a thermal sensitive sheet, the cover body is hinged to the base, a paper outlet is formed between the cover body and the base, one of the thermal sensitive sheet and the rubber roller is arranged on the base, the other of the thermal sensitive sheet and the rubber roller is arranged on the cover body, the thermal sensitive sheet and the rubber roller are opposite to each other and form a paper feeding channel, and the paper feeding channel is communicated with the paper outlet;
the method is characterized in that:
the base is in the printing component is provided with the guide lateral wall for the opposite side of paper outlet, the lid is in the printing component is provided with the paper pressing component for the opposite side of paper outlet, the paper pressing component includes paper pressing piece and elastic component, paper pressing piece hinge in the lid, the elastic component with paper pressing piece is connected and right paper pressing piece applys the pressure of orientation the guide lateral wall, the paper feed passageway passes paper pressing piece with the guide lateral wall.
2. A thermal printer according to claim 1, wherein:
the paper pressing assembly further comprises a fixing support, the fixing support is fixedly arranged on the cover body, the paper pressing block is hinged to the fixing support, and the elastic piece is elastically abutted between the fixing support and the paper pressing block.
3. A thermal printer according to claim 2, wherein:
the paper pressing assembly further comprises a rotating shaft, the rotating shaft is horizontally arranged, and the paper pressing block is hinged with the fixed support through the rotating shaft.
4. A thermal printer according to claim 3, wherein:
the elastic piece is a torsion spring, and the torsion spring is sleeved on the rotating shaft.
5. The thermal printer of claim 4, wherein:
the fixing support is provided with a first positioning groove in the middle, the paper pressing block is provided with a second positioning groove in the middle, the first end of the torsion spring is adjacent to the first positioning groove, and the second end of the torsion spring is adjacent to the second positioning groove.
6. A thermal printer according to claim 2, wherein:
the rubber roller is rotatably arranged on the fixed support, and the heat-sensitive sheet is arranged on the base.
7. A thermal printer according to claim 1, wherein:
the base is provided with a paper bin, and the paper feeding channel is communicated between the paper bin and the paper outlet.
8. The thermal printer of any one of claims 1 to 7, wherein:
the paper pressing block is provided with a guide inclined plane facing the guide side wall, the guide inclined plane is in clearance fit with the guide side wall, and the guide inclined plane and the guide side wall are inclined to the plane where the thermosensitive plate is located.
9. A thermal printer according to any one of claims 2 to 6, wherein:
the paper pressing block is provided with a guide inclined plane facing the guide side wall, the fixing support is provided with an upper inclined plane facing the guide side wall, the upper inclined plane is located above the guide inclined plane, the guide inclined plane is in clearance fit with the guide side wall, and the guide inclined plane, the upper inclined plane and the guide side wall are inclined to the plane where the thermosensitive plate is located.
10. A thermal printer according to claim 9, wherein:
the paper pressing block is provided with a positioning step above the guide inclined plane, the upper inclined plane is positioned in the positioning step, and the side wall of the positioning step can be abutted with the back wall of the upper inclined plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223297319.4U CN219028928U (en) | 2022-12-08 | 2022-12-08 | Thermal printer capable of elastically pressing paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223297319.4U CN219028928U (en) | 2022-12-08 | 2022-12-08 | Thermal printer capable of elastically pressing paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219028928U true CN219028928U (en) | 2023-05-16 |
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ID=86280041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223297319.4U Active CN219028928U (en) | 2022-12-08 | 2022-12-08 | Thermal printer capable of elastically pressing paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219028928U (en) |
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2022
- 2022-12-08 CN CN202223297319.4U patent/CN219028928U/en active Active
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