CN214774905U - Printer with a movable platen - Google Patents

Abstract

The utility model discloses a printer, which comprises a lower working part and an upper working part, wherein the lower working part is movably hinged with the first side of the upper working part through a first hinged shaft, a first roller body and a second roller body are arranged on the lower working part, a printing head is also arranged on the upper working part, a first overturning bracket is movably arranged on the lower working part and is positioned between the lower working part and the upper working part, and a third roller body is arranged on the first overturning bracket; the first roller body is opposed to the print head, and the second roller body is opposed to the third roller body, and forms a paper passage therebetween. The utility model discloses can be convenient maintain, operate the printer, it is more convenient to use.

Description

Printer with a movable platen

Technical Field

The utility model belongs to the printer field, concretely relates to printer.

Background

The printer is widely applied to occasions such as offices, tourist attractions, hospitals, airports, supermarkets and the like, and is used for printing information of passengers or customers.

The printing tape is used as an important carrier for printing, during the printing process, due to the reasons of printing tape offset, printing tape wrinkles, foreign matter entering and the like, the printing tape is often jammed, the inside of the printer needs to be maintained, and the conventional printer is inconvenient to maintain after the paper is jammed due to the structural design.

When putting into the printer with the printing tape, need hard to aim at the printing tape and put into to the skew appears and influence the printing effect in the printing tape appearing, when putting into the printing tape, the operation is also inconvenient.

In the case of a small printer, this is more prominent because of the small space.

Disclosure of Invention

An object of the utility model is to provide a printer, the utility model discloses can be convenient maintain, operate the printer, it is more convenient to use.

The utility model provides a printer, which comprises a lower working part and an upper working part, wherein the lower working part is movably hinged with the first side of the upper working part through a first hinged shaft, a first roller body and a second roller body are arranged on the lower working part, a printing head is also arranged on the upper working part, a first overturning bracket is movably arranged on the lower working part, the first overturning bracket is positioned between the lower working part and the upper working part, and a third roller body is arranged on the first overturning bracket; the first roller body is opposed to the print head, and the second roller body is opposed to the third roller body, and forms a paper passage therebetween.

In one embodiment, a positioning boss is arranged on the lower working part, the first end of the first overturning bracket is hinged to the lower working part through a first rotating shaft, and the second end of the first overturning bracket is positioned through the positioning boss.

In one embodiment, the number of the positioning bosses is two, and the two positioning bosses are respectively positioned at two sides of the paper passing channel; the first hinge shaft is close to the paper feeding side of the lower working part, the positioning bosses extend from the paper feeding side to the paper discharging side, and the second end of the first overturning support is limited by the two positioning bosses.

In one embodiment, the surface of the lower working part is locally concave to form a lower concave surface, the positioning bosses are formed on two sides of the lower concave surface, the lower concave surface is gradually upwards moved close to the paper outlet side to form a transition inclined surface, and the transition inclined surface is tangent to the roller surface of the first roller body.

In one embodiment, the first turning support comprises a support body and two rotating shaft supports, the two rotating shaft supports are mounted on the support body, hinge holes are formed in the rotating shaft supports, two ends of the third roller body are mounted in the hinge holes, and a first elastic piece is arranged between the rotating shaft supports and the support body.

In one embodiment, four support columns are arranged on the frame body, each rotating shaft frame is provided with two side lugs, the side lugs of the rotating shaft frame are respectively installed at the end parts of the respective support columns through screws, the side lugs are provided with movable gaps on the screws, and the first elastic piece is a spiral spring, is sleeved on the support columns and respectively supports and presses between the frame body and the rotating shaft frame.

In one embodiment, a second turnover support is movably arranged on the upper working part, and the first roller body and the printing head are arranged on the second turnover support.

In one embodiment, the lower working part is provided with a driving motor, a first driving shaft and a second driving shaft, the first roller body is arranged on the first driving shaft, the second roller body is arranged on the second driving shaft, the first driving gear is further arranged on the first driving shaft, the second driving gear is further arranged on the second driving shaft, and the first driving gear and the second driving gear are driven by the driving motor.

In one embodiment, a first belt shaft and a second belt shaft are arranged on the second overturning bracket, and a third driving gear is arranged on the first belt shaft; when the lower working part and the upper working part are buckled, the third driving gear is directly or indirectly in transmission connection with the first driving gear.

In one embodiment, the first belt shaft comprises a first split shaft and a second split shaft, the second belt shaft comprises a third split shaft and a fourth split shaft, the first split shaft is coaxially opposite to the second split shaft, and the third split shaft is coaxially opposite to the fourth split shaft; the third driving gear is installed on the first sub-shaft, an axial movable gap is formed among the second sub-shaft, the fourth sub-shaft and the second overturning support, a second elastic piece is arranged between the third sub-shaft and the second overturning support, and a third elastic piece is arranged between the fourth sub-shaft and the second overturning support.

In one embodiment, a position sensing element is provided on the lower working portion, the position sensing element facing the first flipping bracket.

In one embodiment, a placing space corresponding to the first overturning bracket is arranged on the paper feeding side of the second overturning bracket, a second guide inclined surface is arranged at the lower part of the second overturning bracket, a first guide inclined surface is arranged at the back part of the first overturning bracket, and a belt passing channel is formed between the first guide inclined surface and the second guide inclined surface.

In one embodiment, the second turning bracket is movably mounted on the upper working part through a second rotating shaft.

In one embodiment, a sliding groove is formed in the paper feeding side of the lower working portion, a first sliding frame and a second sliding frame are movably arranged in the sliding groove, the first sliding frame is opposite to the second sliding frame, a first rack is arranged on the first sliding frame, a second rack is arranged on the second sliding frame, a transition gear is further arranged on the paper feeding side of the lower working portion, the first rack and the second rack are respectively meshed with two sides of the transition gear, and a fourth elastic piece is arranged between the lower working portion and the first sliding frame and/or the second sliding frame.

The utility model also provides a printer control method, this method includes following step:

turning the first turning support to expose a paper passing channel between the first turning support and the lower working part, placing the printing tape on the paper passing channel, and pressing down the first turning support; the printing belt passes through a paper passing channel between the first overturning bracket and the lower working part and moves forwards under the action of the second roller body and the third roller body; the printing tape passes through the area between the first roller body and the printing head, and the printing tape is printed by the printing head; and the printed tape is output from the printer under the action of the first roller body and/or the second roller body.

The utility model also provides a printer control method, this method includes following step:

turning the first turning support to expose a paper passing channel between the first turning support and the lower working part; taking out the printing tape and sundries on the paper passing channel; the maintenance of the printer is completed.

Before overturning the first overturning bracket, the method also comprises the following steps: the upper working part is turned over relative to the lower working part, the printing shape is separated relative to the first turning support, and the first turning support is exposed.

The utility model provides a technical scheme has following advantage and effect:

in the printing process of the printer, if the printing tape is jammed and the like, the first overturning bracket can be opened to expose the paper passing channel, so that the paper passing channel can be cleaned conveniently and printing paper or sundries can be taken out; when the printing tape is put in, the first overturning bracket can be overturned firstly to expose the paper passing channel, so that the printing tape is put in and aligned conveniently, and the operation is very convenient.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles, principles and effects of the invention.

Unless otherwise specified or defined, the same reference numerals in different figures refer to the same or similar features, and different reference numerals may be used for the same or similar features.

Fig. 1 is a rear perspective view of the printer of the present invention;

FIG. 2 is a front perspective view of the printer of the present invention;

fig. 3 is a side view of the printer according to the present invention in a first open state;

fig. 4 is a side view of a second open state of the printer according to the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4;

fig. 6 is a side view of a third open state of the printer according to the present invention;

fig. 7 is a side view of a fourth open state of the printer according to the present invention;

fig. 8 is a side view of a fifth open state of the printer according to the present invention;

fig. 9 is a first cross-sectional view of the printer of the present invention;

fig. 10 is a second cross-sectional view of the printer of the present invention;

description of reference numerals:

100. an upper working part 111, an upper cover body 112, a second overturn bracket 1121, a second guide inclined plane 1122, a placing space 113, a second rotating shaft,

121. the print head is provided with a print head,

131. first tape spool 1311, first split shaft 1312, second split shaft 132, second tape spool 1321, third split shaft 1322, fourth split shaft 1331, second elastic member 1332, third elastic member 1333, third driving gear,

200. a lower working part 210, a lower main body 211, a first hinge shaft 212, a positioning boss 213, a lower concave surface 214, a transition inclined surface,

220. the first turning support 221, the frame body 2211, the support column 2212, the main support 2213, the pressing sheet 222, the rotating shaft frame 2221, the side lug 223, the screw 224, the hinge hole 225, the first elastic member 226, the third roller body 227, the first guide inclined plane 228, the first rotating shaft,

231. a first roller body 232, a second roller body,

240. the paper-passing channel is arranged on the paper-passing channel,

251. a driving motor 252, a first driving shaft 253, a second driving shaft 254, a first driving gear 255, a second driving gear 256, a first transmission gear 257, a second transmission gear 258, a dial wheel,

261. a first emitting element, 262, a receiving element, 263, a second emitting element, 264, an aperture,

270. the tail frame 271, the first sliding frame 2711, the first rack 272, the second sliding frame 2721, the second rack 273, the transition gear 274, the fourth elastic piece 275, the sliding groove 276, the plug port 277 and the switch,

301. paper outlet 302, buckle 303, press key 304, side block piece.

Detailed Description

In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.

Unless specifically stated or otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In combination with the present technical solution's realistic scene, all technical and scientific terms used herein may also have meanings corresponding to the purpose of realizing the technical solution of the present invention.

As used herein, unless otherwise specified or defined, "first" and "second" … are used merely for name differentiation and do not denote any particular quantity or order.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

As used herein, unless otherwise specified or defined, the terms "comprises," "comprising," and "comprising" are used interchangeably to refer to the term "comprising," and are used interchangeably herein.

It is needless to say that technical contents or technical features which are contrary to the object of the present invention or clearly contradict each other should be excluded.

As shown in fig. 1 to 10, the printer includes a lower working unit 200 and an upper working unit 100, wherein a paper feeding side of the upper working unit 100 is hinged to the lower working unit 200 through a first hinge shaft 211, a latch 302 is provided on the lower working unit 200, a paper discharging side of the upper working unit 100 is connected to the lower working unit 200 through the latch 302, and a pressing key 303 is further provided on the lower working unit 200, and the latch 302 is controlled by the pressing key 303 to engage or disengage the upper working unit 100 with or from the lower working unit 200. A first roller 231 and a second roller 232 are arranged on the lower working part 200, a printing head 121 is also arranged on the upper working part 100, the lower working part 200 comprises a box-shaped lower main body 210 and a first overturning bracket 220, the first overturning bracket 220 is positioned between the lower working part 200 and the upper working part 100, and a third roller 226 is arranged on the first overturning bracket 220; the first roller 231 is opposed to the print head 121, the second roller 232 is opposed to the third roller 226, and a sheet passing path 240 is formed therebetween, and a sheet discharge port 301 opposed to the sheet passing path 240 is provided at the front end of the lower working portion.

When the printer is used, the first inversion bracket 220 is inverted to expose the paper passing channel 240 between the first inversion bracket 220 and the lower working part 200, the printing tape is placed on the paper passing channel 240, and the first inversion bracket 220 is pressed down; the printing tape passes through the paper passing channel 240 between the first turnover bracket 220 and the lower working part 200 and moves forwards under the action of the second roller 232 and the third roller 226; the print tape passes through the region between the first roll 231 and the print head 121, and the print tape is printed by the print head 121; the printed tape is discharged from the printer by the first roller 231 and/or the second roller 232.

If a paper jam or sundries enter the printer, the first overturning bracket 220 can be overturned to expose the paper passing channel 240 between the first overturning bracket 220 and the lower working part 200; taking out the printing tape and the sundries on the paper passing channel 240; the maintenance of the printer is completed.

In this embodiment, if a paper jam occurs in the printing tape, the first turning bracket 220 may be opened to expose the paper passing channel 240, so as to facilitate the cleaning operation of the paper passing channel 240, and to take out printing paper or sundries; when the printing tape is put in, the first turning bracket 220 can also be turned over firstly, so that the paper passing channel 240 is exposed, the printing tape can be conveniently put in and aligned, and the operation is very convenient.

Please refer to fig. 4 to 10, in which the first turning bracket 220 includes a bracket body 221 and two pivot brackets 222, four support columns 2211 are disposed on the bracket body 221, each pivot bracket 222 has two side ears 2221, the side ears 2221 of the pivot bracket 222 are respectively mounted at the ends of the respective support columns 2211 through screws 223, the side ears 2221 have a movable gap on the screws 223, the first elastic member 225 is a coil spring, is sleeved on the support columns 2211, and respectively abuts against and presses between the bracket body 221 and the pivot bracket 222; a hinge hole 224 is formed in the shaft holder 222, and both ends of the third roller body 226 are mounted in the hinge hole 224. The frame body 221 comprises a main support 2212 and a pressing sheet 2213, the pressing sheet 2213 is fixed on the main support 2212, the frame body 221 adopts a split structure, demolding of a product in a machining process can be facilitated, and installation of the third roller body 226 can also be facilitated. The two ends of the third roller 226 are respectively installed in the hinge holes 224 of the rotating shaft frame 222, the two ends of the rotating shaft frame 222 are movably installed on the support columns 2211 and are pressed against the support columns through the first elastic piece 225, in the working process, the third roller 226 is matched with the second roller 232 and is used for driving the printing tape to move forwards or move backwards, due to the effect of the first elastic piece 225, the third roller 226 is buffered and balanced in force through four stress points of the rotating shaft frame 222, and the third roller 226 can slightly bounce according to the condition of the printing tape to adapt to different thicknesses of the printing tape or meet the requirements of different working conditions of a printer.

The upper working portion 100 includes an upper cover 111 and a second turning bracket 112 movably mounted on the upper working portion 100 by a second rotating shaft 113, and the first roller 231 and the print head 121 are disposed on the second turning bracket 112. A first belt shaft 131 and a second belt shaft 132 are arranged on the second overturning bracket 112, wherein the first belt shaft 131 comprises a first split shaft 1311 and a second split shaft 1312, the second belt shaft 132 comprises a third split shaft 1321 and a fourth split shaft 1322, the first split shaft 1311 is coaxially opposite to the second split shaft 1312, and the third split shaft 1321 is coaxially opposite to the fourth split shaft 1322; the third driving gear 1333 is mounted on the first shaft component 1311, an axial clearance is provided between the second shaft component 1312, the fourth shaft component 1322 and the second turning support 112, a second elastic member 1331 is provided between the third shaft component 1321 and the second turning support 112, a third elastic member 1332 is provided between the fourth shaft component 1322 and the second turning support 112, a dial wheel 258 is connected to the third shaft component 1321, and the third shaft component 1321 can be driven to rotate by the dial wheel 258 and clamp the ribbon/ribbon.

The upper working part 100 is provided with a second overturning bracket 112, and the second overturning bracket 112 can be overturned relative to the upper working part 100, so that the printing head 121 and the first roller 231 can be conveniently maintained; moreover, the first tape shaft 131 and the second tape shaft 132 are arranged on the second overturning body, so that when the thermal transfer ribbon/color ribbon is needed, the thermal transfer ribbon/color ribbon can be arranged on the first tape shaft 131 and the second tape shaft 132, and after the second overturning bracket 112 is arranged, the thermal transfer ribbon/color ribbon can be more conveniently arranged, disassembled and debugged; the first tape spool 131 and the second tape spool 132 each have two split shafts, so that when the thermal tape/ink ribbon is mounted or dismounted, the third split shaft 1321/the fourth split shaft 1322 can be pulled apart, and the third split shaft 1321/the fourth split shaft 1322 can be retracted by overcoming the elastic force of the second elastic member 1331/the third elastic member 1332, and the thermal tape/ink ribbon can be separated from the first tape spool 131 and the second tape spool 132. The ribbon/ribbon may be wound in a single roll or in double rolls.

A placing space 1122 corresponding to the first turning bracket 220 is provided at the paper feeding side of the second turning bracket 112, a second guiding inclined surface 1121 is provided at the lower portion of the second turning bracket 112, a first guiding inclined surface 227 is provided at the back of the first turning bracket 220, and a belt passing channel is formed between the first guiding inclined surface 227 and the second guiding inclined surface 1121. When the ribbon/ribbon passes through the ribbon passing path, the first guiding inclined surface 227 of the back of the first turning bracket 220 and the second guiding inclined surface 1121 of the second turning bracket 112 can play an effective guiding role, so as to prevent the ribbon/ribbon from wrinkling.

The upper surface of the lower working part 200 forms a printing working surface, the printing working surface is partially concave to form a lower concave surface 213, two positioning bosses 212 are formed on two sides of the lower concave surface 213, and the two positioning bosses 212 are respectively positioned on two sides of the paper passing channel 240; the first hinge shaft 211 is close to the paper feeding side of the lower working part 200, the first end of the first turning bracket 220 is hinged to the lower working part 200 through the first rotating shaft 228, the two positioning bosses 212 extend from the paper feeding side to the paper discharging side, and the second end of the first turning bracket 220 is limited by the two positioning bosses 212; the concave bottom surface 213 moves upward gradually near the paper exit side to form a transition slope 214, and the transition slope 214 is tangent to the surface of the first roller 231.

First end and the lower work portion 200 of first upset support 220 are articulated, the second end is spacing through two location sand grips on the lower work portion 200, avoid first upset support 220 deflection to appear, the local recessed concave surface 213 that forms of lower work portion 200, when printing the area through paper passageway 240, also can be spacing in this recessed surface 213, and be close to first roll body 231 department along transition inclined plane 214 and the roll surface laminating of first roll body 231, make the printing area can realize steady removal, reduce the emergence of card paper phenomenon.

The lower working unit 200 includes a driving motor 251, a first driving shaft 252, and a second driving shaft 253, the first roller 231 is mounted on the first driving shaft 252, the second roller 232 is mounted on the second driving shaft 253, the first driving gear 254 is further mounted on the first driving shaft 252, the second driving gear 255 is further mounted on the second driving shaft 253, and an output shaft of the driving motor 251 is engaged with the first driving gear 254 and the second driving gear 255 through four first transmission gears 256 and is rotated by the driving motor 251. A third drive gear 1333 is provided on the first belt shaft 131; when the lower working part 200 and the upper working part 100 are buckled with each other, two second transmission gears 257 are disposed between the first driving gear 254 and the third driving gear 1333, and the first driving gear 254 drives the third driving gear 1333 to rotate through the two second transmission gears 257, so as to drive the ribbon/ribbon to move synchronously.

The driving motor 251 drives the first driving shaft 252 and the second driving shaft 253 to rotate, so as to drive the first driving gear 254 and the second driving gear 255 to rotate, and then the first roller 231 and the second roller 232 drive the printing tape to move, and the first driving gear 254 and the second driving gear 255 preferably adopt the same specification, so that the printing tape can be effectively ensured to stably move in the moving process, the front and back synchronization is realized, and the paper jam is avoided; the third driving gear 1333 is in transmission connection with the first driving gear 254 through two idle wheels, and the third driving gear 1333 is driven to rotate by the first driving gear 254, so that the moving speed of the carbon tape/ink ribbon and the speed of the printing tape can be kept synchronous, paper jam is reduced, and the printing effect is improved.

In order to further improve the printing effect and improve the positioning accuracy, a first emitting element 261 is disposed on the lower working portion 200, and a receiving element 262 is disposed on the first flipping frame 220, and is configured to receive a sensing signal emitted by the first emitting element 261 and perform sensing positioning on the forward position of the paper. The lower working portion 200 is further provided with a second emitting element 263, in order to avoid shielding signals of the second emitting element 263, an opening 264 is provided on the first turning bracket 220, and sensing signals emitted by the second emitting element 263 pass through the opening 264 and then illuminate the carbon ribbon/color ribbon on the second turning bracket 112.

Please refer to fig. 2 and 9, the spool of the print tape needs to be installed on the paper feeding side of the lower working portion 200, for the convenience of installation, a tail frame 270 is installed on the paper feeding side of the lower working portion 200, a sliding slot 275 is installed on the tail frame 270, a first sliding frame 271 and a second sliding frame 272 are movably installed in the sliding slot 275, the first sliding frame 271 and the second sliding frame 272 are opposite, the first sliding frame 271 and the second sliding frame 272 are respectively connected with two fourth elastic members 274, a first rack 2711 is installed on the first sliding frame 271, a second rack 2721 is installed on the second sliding frame 272, a transition gear 273 is also installed on the paper feeding side of the lower working portion 200, the first rack 2711 and the second rack 2721 are respectively engaged with two sides of the transition gear 273, and the fourth elastic members 274 are installed between the lower working portion 200 and the first sliding frame 271 and/or the second sliding frame 272. The spool both ends of printing the area card respectively in first carriage 271, on the second carriage 272, under the pulling force effect of fourth elastic component 274, first carriage 271, the flexible spool that draws close to the middle part and will print the area of second carriage 272 presss from both sides tightly, the lateral part of portion 200 under, the below position of tailstock 270 is equipped with interface 276 and switch 277, first carriage 271, second carriage 272 can remove for spout 275, this structure can be applicable to the printing tape of different specifications, the installation and the dismantlement of printing tape are also very convenient, first carriage 271, through first rack 2711 between the second carriage 272, the cooperation of second rack 2721 and idle wheel, can guarantee first carriage 271, the symmetrical removal of second carriage 272, guarantee the centering of printing tape.

The above embodiments are intended to be illustrative, and should not be construed as limiting the scope of the invention, and the technical solutions, objects and effects of the present invention are described in full herein.

The above examples are not intended to be exhaustive list of the present invention, and there may be many other embodiments not listed. Any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.

Claims (14)

1. The printer is characterized by comprising a lower working part and an upper working part, wherein the lower working part is movably hinged with the first side of the upper working part through a first hinge shaft, a first roller body and a second roller body are arranged on the lower working part, a printing head is also arranged on the upper working part, a first overturning bracket is movably arranged on the lower working part and is positioned between the lower working part and the upper working part, and a third roller body is arranged on the first overturning bracket; the first roller body is opposed to the print head, and the second roller body is opposed to the third roller body, and forms a paper passage therebetween.

2. The printer as claimed in claim 1, wherein a positioning boss is provided on said lower working portion, a first end of said first flip bracket is hinged to said lower working portion by a first hinge, and a second end of said first flip bracket is positioned by said positioning boss.

3. The printer according to claim 2, wherein the number of the positioning bosses is two, and the two positioning bosses are respectively positioned at two sides of the paper passing channel; the first hinge shaft is close to the paper feeding side of the lower working part, the positioning bosses extend from the paper feeding side to the paper discharging side, and the second end of the first overturning support is limited by the two positioning bosses.

4. The printer of claim 3 wherein said lower working portion has a surface which is partially recessed to form a lower concave surface, said locating projections being formed on either side of said lower concave surface, said lower concave surface being progressively raised adjacent said paper exit side to form a transition ramp which is tangential to said roll surface of said first roll member.

5. The printer according to any one of claims 1 to 4, wherein the first turning support comprises a frame body and two pivot frames, the two pivot frames are mounted on the frame body, hinge holes are formed on the pivot frames, both ends of the third roller body are mounted in the hinge holes, and a first elastic member is arranged between the pivot frames and the frame body.

6. The printer according to claim 5, wherein four support columns are disposed on the frame body, each of the pivot frames has two side lugs, the side lugs of the pivot frame are respectively mounted on the ends of the respective support columns through screws, the side lugs have moving gaps on the screws, and the first elastic member is a coil spring, is sleeved on the support columns, and respectively abuts against and presses between the frame body and the pivot frame.

7. A printer according to any one of claims 1 to 4, wherein a second roll-over support is movably provided on the upper working portion, the first roll-over and the print head being provided on the second roll-over support.

8. The printer as claimed in claim 7, wherein a drive motor, a first drive shaft, and a second drive shaft are provided in the lower working portion, the first roller is mounted on the first drive shaft, the second roller is mounted on the second drive shaft, a first drive gear is further mounted on the first drive shaft, a second drive gear is further mounted on the second drive shaft, and the first drive gear and the second drive gear are driven by the drive motor.

9. The printer as claimed in claim 8, wherein a first tape spool, a second tape spool are provided on said second reversing frame, and a third driving gear is provided on said first tape spool; when the lower working part and the upper working part are buckled, the third driving gear is directly or indirectly in transmission connection with the first driving gear.

10. The printer of claim 9, wherein the first tape spool comprises a first split spool and a second split spool, the second tape spool comprises a third split spool and a fourth split spool, the first split spool is coaxially opposite the second split spool, and the third split spool is coaxially opposite the fourth split spool; the third driving gear is installed on the first sub-shaft, an axial movable gap is formed among the second sub-shaft, the fourth sub-shaft and the second overturning support, a second elastic piece is arranged between the third sub-shaft and the second overturning support, and a third elastic piece is arranged between the fourth sub-shaft and the second overturning support.

11. The printer of claim 8, wherein a position sensing element is provided on said lower working portion, said position sensing element facing said first flip frame.

12. The printer of claim 8, wherein a space corresponding to the first turning frame is provided at a paper feeding side of the second turning frame, a second guide slope is provided at a lower portion of the second turning frame, a first guide slope is provided at a back portion of the first turning frame, and a tape passing path is formed between the first guide slope and the second guide slope.

13. The printer of claim 7, wherein said second flip frame is movably mounted to said upper working portion by a second pivot.

14. The printer according to any one of claims 1 to 4, wherein a chute is provided on a paper feeding side of the lower working portion, a first carriage and a second carriage are movably provided in the chute, the first carriage is opposed to the second carriage, a first rack is provided on the first carriage, a second rack is provided on the second carriage, a transition gear is further provided on the paper feeding side of the lower working portion, the first rack and the second rack are engaged with both sides of the transition gear, respectively, and a fourth elastic member is provided between the lower working portion and the first carriage and/or the second carriage.

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