CN212604076U

CN212604076U - Thermal printer with easily-detachable rubber roller

Info

Publication number: CN212604076U
Application number: CN202020884843.3U
Authority: CN
Inventors: 胡琳; 刘鹏; 欧洋明
Original assignee: Zhuhai Howbest Label Printer Co ltd
Current assignee: Zhuhai Howbest Label Printer Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-02-26
Anticipated expiration: 2030-05-22

Abstract

The utility model provides a thermal printer of easy dismouting of rubber roll includes flip and base, flip articulates in the base, is provided with rubber roll groove, mounting groove and spacing groove on the base towards flip's lateral wall, and the rubber roll has been placed in the rubber roll groove, and rubber roll groove, mounting groove and spacing groove are provided with the opening towards flip respectively, and mounting groove and spacing groove are connected and are communicated along the radial of rubber roll, are provided with the fixture block between rubber roll groove and the mounting groove, are provided with the draw-in groove on the fixture block, and the draw-in groove is provided with the bayonet socket towards flip; the rubber roll is connected with the axle sleeve, the axle sleeve passes through the bayonet socket to be installed in the draw-in groove, the axle sleeve can be at the draw-in groove internal rotation, be provided with the stopper on the periphery wall of axle sleeve, the stopper extends to the spacing groove from mounting groove, the stopper is located mounting groove and spacing inslot respectively, stopper and spacing cooperation of spacing groove, structure more than adopting, only need open flip, drive axle sleeve takes place the action and drives the rubber roll and break away from or get into the rubber roll inslot, need not to carry out the dismantlement of base to effectively.

Description

Thermal printer with easily-detachable rubber roller

Technical Field

The utility model relates to a printer field specifically is a thermal printer who relates to a rubber roll easy dismouting.

Background

The utility model patent ZL201821678175.8 of china utility model discloses a bar code printer of rubber roll easy dismouting, the rubber roll is connected with the bearing in this patent to accomplish the installation location of rubber roll through location step face on the frame and the location step face on the bearing, and the fixed of rubber roll is installed fixedly through the fixed part, makes the quick assembly disassembly through the dismouting realization rubber roll to the bearing. However, the fixing portion is disposed on the side wall of the base, and when the rubber roller is mounted or dismounted, the bearing can only move in the axial direction of the rubber roller for dismounting, so that the base needs to be dismounted from the printer first, then the rubber roller is mounted or dismounted from the base, and finally the base is remounted in the printer.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a thermal printer who carries out rubber roll dismouting fast.

In order to achieve the main purpose, the utility model provides a thermal printer of rubber roll easy dismouting includes flip and base, flip articulates in the base, the base is provided with the rubber roll groove towards on flip's the lateral wall, mounting groove and spacing groove, rotatable rubber roll has been placed to the rubber roll inslot, the rubber roll groove is provided with first opening towards flip, mounting groove and spacing groove set up at the axial tip department of rubber roll groove along the rubber roll, mounting groove and rubber roll groove along the axial of rubber roll intercommunication, mounting groove and spacing groove along the radial connection of rubber roll, mounting groove and spacing groove along the radial intercommunication of rubber roll, mounting groove is provided with the second opening towards flip, the spacing groove is provided with the third opening towards flip, be provided with the fixture block between rubber roll groove and the mounting groove, be provided with the draw-in groove on the fixture block, the draw-in groove is provided; the rubber roll has the axle sleeve along the axial end connection of rubber roll, and the axle sleeve passes through the bayonet socket to be installed in the draw-in groove, and the axle sleeve can be at the draw-in groove internal rotation, radially is provided with the stopper along the axle sleeve on the periphery wall of axle sleeve, and the stopper extends to the spacing groove from the mounting groove, and the middle part of stopper passes the second opening setting in the mounting groove, and the free end of stopper passes the third opening setting at the spacing inslot, stopper and spacing cooperation of spacing groove.

It can be seen from the above scheme that the rubber roller is connected with the shaft sleeve, the shaft sleeve is clamped in the clamping groove of the clamping block, when the rubber roller is required to be disassembled, the turnover cover is opened from the base, the limiting block is taken out of the limiting groove, the shaft sleeve in the clamping groove is driven to rotate, so that the free end of the limiting block passes through the third opening, the middle part of the limiting block passes through the second opening, the shaft sleeve passes through the bayonet, the rubber roller is driven to pass through the first opening, so that the rubber roller is separated from the rubber roller groove, because the first opening, the second opening, the third opening and the bayonet are all arranged towards the turnover cover, when the rubber roller is driven to rotate and driven by the movement of the shaft sleeve to pass through the first opening, the base does not need to be disassembled, after the turnover cover is opened, the base is exposed towards the side wall of the turnover cover, the disassembling can be directly and rapidly performed, and similarly, when, open flip, pass the bayonet socket setting with the axle sleeve in the draw-in groove, drive the rubber roll and put into the rubber roll drive, drive the stopper and rotate, accomplish spacing cooperation with the spacing groove until the free end of stopper, closed flip again, at the installation of rubber roll and dismantlement in-process, only need open flip, drive the axle sleeve and take place the action and drive the rubber roll and break away from or get into the rubber roll inslot, need not to carry out the dismantlement of base to effectively raise the efficiency.

The further scheme is that a first positioning block and a second positioning block are arranged on the peripheral wall of the shaft sleeve, the clamping blocks are located between the first positioning block and the second positioning block, the first positioning block is located in the rubber roller groove, and the second positioning block is arranged in the mounting groove.

It is thus clear that the axle sleeve sets up in the draw-in groove, and the fixture block is located between first locating piece and the second locating piece to first locating piece sets up in the rubber roll groove, and the second locating piece is located mounting groove, and under the combined action of first locating piece and second locating piece, the axle sleeve in the draw-in groove can't take place to remove along the axial of rubber roll, and at the printing in-process, the axle sleeve can not take place to rotate along with the rotation of rubber roll.

The further scheme is that a protruding block is arranged on the side wall of the turnover cover facing the base, a positioning groove is arranged on the protruding block, the opening of the positioning groove faces the rubber roller, and the shaft sleeve can penetrate through the opening of the positioning groove and is arranged in the positioning groove.

It is obvious that after the flip cover is closed, the shaft sleeve is positioned in the positioning groove, and the shaft sleeve is kept stable in the printing process under the interaction of the clamping groove and the positioning groove.

The further scheme is that an avoiding concave surface is arranged on the shaft sleeve and is installed in the clamping groove from the bayonet.

Therefore, the avoiding concave surface arranged on the shaft sleeve enables the radial width of the shaft sleeve to be reduced, and when the shaft sleeve is driven to rotate, the shaft sleeve is enabled to adapt to the width of the bayonet at the bayonet, so that the shaft sleeve penetrates through the bayonet.

A narrowing groove is arranged between the mounting groove and the limiting groove and is respectively communicated with the mounting groove and the limiting groove, and the width of the narrowing groove is smaller than that of the mounting groove and that of the limiting groove along the axial direction of the rubber roller; the stopper includes connecting strip and joint piece, and the connecting strip is connected with joint piece integrated into one piece, and the connecting strip is connected between axle sleeve and joint piece, and the connecting strip is located the narrowing groove, and the joint piece is located the spacing inslot, and the joint piece is in the intercommunication department in spacing groove and narrowing groove and the lateral wall joint of spacing groove.

It is obvious that the connecting strip is located and receives the narrow inslot, and the joint piece is located the spacing inslot, and the joint piece is greater than the connecting strip along the axial width of rubber roll correspondingly along the axial width of joint piece, and when the joint piece was in the intercommunication department of spacing groove and narrowing groove and the lateral wall joint of spacing groove, the connecting strip was adjoined with the lateral wall in narrowing groove, and the joint piece was adjoined with the lateral wall in spacing groove, under frictional force and flip's effect, the stopper can't wear out and the perk from the spacing groove, effectively keeps the axle sleeve static in the printing process.

The further scheme is that a first side wall is arranged on the limiting groove, the first side wall and the narrowing groove are oppositely arranged, and an operation gap is formed between the clamping block and the first side wall.

It can be seen that this operation clearance can be convenient for when the driving shaft cover rotates, take the joint piece of spacing inslot fast away.

Further, the connecting strips are arranged in a bending mode.

It is obvious that the connecting strip sets up between joint piece and axle sleeve, and the axle sleeve is located along the ascending draw-in groove of rubber roll axial, and the joint piece is located the spacing inslot, and based on the base towards flip's lateral wall, the degree of depth in rubber roll groove is greater than the degree of depth in spacing groove, and the connecting strip is crooked to be set up for the base sets up smoothly towards flip's lateral wall upper part, can normally cooperate with the part on the flip.

The rubber roller is characterized in that a mounting groove and a limiting groove are symmetrically arranged on the base along the radial central line of the rubber roller, a shaft sleeve and a limiting block are respectively connected to two ends of the rubber roller along the axial direction of the rubber roller, and the limiting blocks are respectively and correspondingly mounted in the mounting groove and the limiting groove.

Therefore, the two axial ends of the rubber roller are respectively connected with the shaft sleeves, so that when the rubber roller is disassembled and assembled, two hands of an operator respectively correspond to the two shaft sleeves, and simultaneously the two shaft sleeves are quickly rotated and penetrate through the bayonet, so that the whole rubber roller is driven to be installed or separated from the rubber roller groove, and the rubber roller is quickly disassembled and assembled.

The rubber roller is characterized in that a containing cavity is formed in the base, the containing cavity is communicated with the mounting groove, a driving assembly is arranged in the containing cavity and comprises a motor and a driving gear which are connected with each other, the driving gear is in driving connection with the axial end portion of the rubber roller, and the driving gear and the shaft sleeve are both located in the mounting groove.

It is obvious that drive gear and axle sleeve are located mounting groove, and mounting groove with hold the chamber intercommunication, the drive gear of being convenient for is connected with the motor that holds the intracavity for the part arrangement on the base is more reasonable.

The further proposal is that a conductive elastic sheet is arranged in a mounting groove at the other side opposite to the driving gear, and the rubber roller is adjacent to the conductive elastic sheet.

It can be seen that a driving gear is arranged in the mounting groove on one side, a conductive elastic sheet is arranged in the mounting groove on the other side, the driving gear and the conductive elastic sheet are respectively connected with the rubber roller, and the driving gear and the conductive elastic sheet are respectively located in the mounting groove on the premise that the rubber roller is connected with the shaft sleeve, so that the parts of the base are more reasonably distributed.

Drawings

FIG. 1 is a perspective view of the thermal printer with the easily detachable rubber roller according to the present invention.

Fig. 2 is a perspective view of another angle of the thermal printer with the easily detachable rubber roll of the present invention.

Fig. 3 is a structural diagram of the thermal printer with the easy-to-disassemble and assemble rubber roll of the present invention after the flip cover is opened.

Fig. 4 is a perspective view of the base in the embodiment of the thermal printer with the easily detachable rubber roll of the present invention.

Fig. 5 is an exploded view of the rubber roller and the shaft sleeve in the embodiment of the thermal printer with the rubber roller easy to disassemble and assemble.

Fig. 6 is a cross-sectional view of the base in the embodiment of the thermal printer with the easily detachable rubber roll of the present invention.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Referring to fig. 1 and 2, the thermal printer with the rubber roller easy to disassemble and assemble comprises a flip 1 and a base 2, wherein the base 2 comprises a middle frame 21 and a shell 22, the middle frame 21 is arranged in the shell 22, the flip 1 is hinged to the middle frame 21 of the base 2, and the flip 1 can rotate relative to the base 2 to realize the opening and closing of the flip 21. In the present embodiment, a paper inlet 23, a paper feeding channel 24 and a paper outlet 25 are disposed between the flip 1 and the base 2, the paper feeding channel 24 is disposed between the paper inlet 23 and the paper outlet 25, and the paper feeding channel 24 is respectively communicated with the paper inlet 23 and the paper outlet 25. When the printer level was placed, along vertical direction, the width of entering paper mouth 23 was greater than the width of exit slot 25, and this kind of structure in no paper storehouse is convenient for operating personnel to put into towards entering paper mouth 23 fast and beat printing paper to be provided with slidable clamp paper piece 26 in entering paper mouth 23 department on base 2, with the width of adjustment paper feed passageway 24, the printer adaptation not unidimensional beat printing paper of being convenient for.

Referring to fig. 3 and 4, a rubber roller groove 3, a mounting groove 4 and a limiting groove 5 are arranged on the side wall of the base 2 facing the flip 1, a rotatable rubber roller 6 is placed in the rubber roller groove 3, a heat-sensitive sheet 17 is arranged on the side wall of the flip 1 facing the rubber roller 6, and a paper feeding channel 24 is located between the rubber roller 6 and the heat-sensitive sheet 17. Referring to fig. 5, the rubber roller 6 includes a central shaft 61 and a rubber sleeve 62, and the rubber sleeve 62 is disposed radially outward of the central shaft 61. In this embodiment, the base 2 is symmetrically provided with a mounting groove 4 and a limiting groove 5 along a radial central line of the rubber roller 6 at a first axial end 63 and a second axial end 64 of the rubber roller 6, the mounting groove 4 is communicated with the rubber roller groove 3 along an axial direction of the rubber roller 6, the mounting groove 4 is radially connected with the limiting groove 5 along the rubber roller 6, the mounting groove 4 is radially communicated with the limiting groove 5 along the rubber roller 6, the limiting groove 5 is located in a radial direction of the rubber roller 6, and the limiting groove 5 is located between the mounting groove 4 and the paper inlet 23. A narrowing groove 7 is arranged between the mounting groove 4 and the limiting groove 5, the narrowing groove 7 is respectively communicated with the mounting groove 4 and the limiting groove 5, and the width of the narrowing groove 7 is respectively smaller than the width of the mounting groove 4 and the width of the limiting groove 5 along the axial direction of the rubber roller 6.

The glue roller groove 3 is provided with a first opening 31 towards the flip 1, the mounting groove 4 is provided with a second opening 41 towards the flip, the limiting groove 5 is provided with a third opening 51 towards the flip 1, and the narrowing groove 7 is provided with a fourth opening 71 towards the flip. A clamping block 8 is arranged between the rubber roller groove 3 and the mounting groove 4, a clamping groove 81 is arranged on the clamping block 8, and a clamping opening 82 is arranged on the clamping groove 81 towards the turnover cover 1.

The first axial end 63 and the second axial end 64 of the rubber roller 6 are respectively connected with a shaft sleeve 9, the shaft sleeve 9 is provided with a through hole 90 along the axial direction of the shaft sleeve, and the central shaft 61 penetrates through the through hole 90. The shaft sleeve 9 is installed in the clamping groove 81 through the bayonet 82, the shaft sleeve 9 can rotate in the clamping groove 81, and in the printing process, the rotation of the rubber roller 6 cannot drive the shaft sleeve 9 in the clamping groove 81 to rotate. In this embodiment, the shaft sleeve 9 includes two avoiding concave surfaces 91 and two arc surfaces 92, one arc surface 92 is arranged between two avoiding concave surfaces 91, two avoiding concave surfaces 91 deviate from the arrangement along the radial direction of the shaft sleeve 9, and based on the arc surfaces 92, the avoiding concave surfaces 91 are concave, so that the width of the shaft sleeve 9 at the avoiding concave surfaces 91 is reduced. Referring to fig. 6, when the shaft sleeve 9 is located in the locking slot 81, the arc-shaped surface 92 is in clearance fit with the side wall of the locking slot 81, and an avoiding concave surface 91 is arranged opposite to the locking slot 82. The peripheral wall of axle sleeve 9 is equipped with first locating piece 93 and second locating piece 94, and fixture block 8 is located between first locating piece 93 and the second locating piece 94, and first locating piece 93 is located the rubber roll groove 3, and second locating piece 94 sets up in mounting groove 4. In the present embodiment, along the axial direction of the rubber roller 6, the first positioning block 93 is disposed between the avoiding concave 91 and the rubber sleeve 62 of the rubber roller 6, and the second positioning block 94 is disposed on an arc-shaped surface 92 between the two avoiding concave 91. Under the combined action of the first positioning block 93 and the second positioning block 94, the shaft sleeve 9 in the slot 81 cannot move along the axial direction of the rubber roller 6, and the shaft sleeve 9 cannot rotate along with the rotation of the rubber roller 6 in the printing process.

Radially being provided with stopper 10 along axle sleeve 9 on the periphery wall of axle sleeve 9, stopper 10 is connected on another arcwall 92 of comparing arcwall 92 at second locating piece 94 place, and stopper 10 extends to spacing groove 5 from mounting groove 4, and the middle part of stopper 10 passes second opening 41 and sets up in mounting groove 4, and the free end of stopper 10 passes third opening 51 and sets up in spacing groove 5, stopper 10 and 5 spacing cooperations of spacing groove. In this embodiment, stopper 10 includes connecting strip 11 and joint piece 12, and connecting strip 11 is connected with joint piece 12 integrated into one piece, and connecting strip 11 is connected between axle sleeve 9 and joint piece 12, and stopper 10's free end is located joint piece 12, and stopper 10's middle part is located connecting strip 11.

Connecting strip 11 is located and receives slot 7, joint piece 12 is located spacing inslot 5, joint piece 12 is greater than connecting strip 11 along 6 axial width of rubber roll 6 along the width of rubber roll 6, joint piece 12 is when spacing groove 5 and the lateral wall joint of narrowing groove 7 and spacing groove 5, connecting strip 11 borders on with the lateral wall of narrowing groove 7, joint piece 12 borders on with the lateral wall of spacing groove 5, in the effect of friction, flip is closed down, stopper 10 can't follow spacing groove 5 and wear out and the perk, effectively keep axle sleeve 9 static at the printing in-process. In this embodiment, the limiting groove 5 is provided with an arc surface 52 on the side wall of the communicating portion of the limiting groove 5 and the narrowing groove 7, and the clamping block 12 is in limiting fit with the arc surface 52.

Be provided with first lateral wall 53 on spacing groove 5, first lateral wall 53 sets up with narrowing groove 7 relatively, is provided with operating gap 54 between joint piece 12 and the first lateral wall 53, and this operating gap 54 can be convenient for when driving axle sleeve 9 rotates, take joint piece 12 in the spacing groove 5 fast. In the present embodiment, a fifth opening 55 is provided on a side of the mounting groove 4 facing the paper feeding path 24, and an operator can take and mount the clamping block 12 from the fifth opening 55.

In the present embodiment, the connecting bar 11 is disposed to be curved; connecting strip 11 sets up between joint piece 12 and axle sleeve 9, and axle sleeve 9 is located along 6 axial ascending draw-in grooves 81 of rubber roll, and joint piece 12 is located spacing groove 5, and based on base 2 towards flip 1's lateral wall, the degree of depth of rubber roll groove 3 is greater than the degree of depth of spacing groove 5, and connecting strip 11 crooked sets up for base 2 sets up smoothly towards flip 1's lateral wall upper part, can normally cooperate with the part on flip 1.

When the rubber roll 6 is disassembled on the base 1, the turnover cover 1 is opened from the base 2, the limiting block 10 is taken out of the limiting groove 5, the shaft sleeve 9 in the driving clamping groove 81 is rotated, the free end of the limiting block 10 penetrates through the third opening 51, the middle of the limiting block 10 penetrates through the second opening 41, meanwhile, when the shaft sleeve 9 rotates, the rotation of the avoiding concave surface 91 and the arc-shaped surface 92 is driven, the arc-shaped surface 92 and the bayonet 82 are oppositely arranged, the avoiding concave surface 91 enables the radial width of the shaft sleeve 9 to be reduced, when the driving shaft sleeve 9 rotates, the shaft sleeve 9 is enabled to adapt to the width of the bayonet 82 at the bayonet 82, and the shaft sleeve 9 can conveniently penetrate through the bayonet 82. Drive axle sleeve 9 passes bayonet 82, it passes first opening 31 to drive rubber roll 6, make rubber roll 6 break away from rubber roll groove 3, because first opening 31, second opening 41, third opening 51, fourth opening 71 and bayonet 82 all are towards flip setting, consequently when drive axle sleeve 9 rotates and axle sleeve 9's removal drives rubber roll 6 and passes first opening 31, need not to dismantle base 2, open flip 1 back base 2 exposes towards flip 1's lateral wall, can directly carry out the dismantlement of rubber roll 6 fast. Similarly, when the rubber roller 6 is installed, the flip cover 1 is opened, the shaft sleeve 9 passes through the bayonet 82 through the avoiding concave surface 91 and is arranged in the clamping groove 81, the bayonet 82 is arranged opposite to the avoiding concave surface 91, so that the bayonet 82 limits the shaft sleeve 9 in the clamping groove 81, the rubber roller 6 is driven to be placed into the rubber roller 6 to drive the limiting block 10 to rotate when axially entering the clamping groove 81 until the free end of the limiting block 10 is in limiting fit with the limiting groove 5, the flip cover 1 is closed, in this embodiment, two convex blocks 18 are symmetrically arranged on the side wall of the flip cover 1 facing the rubber roller 6, the thermal sensitive sheet 17 is located between the two convex blocks 18, a positioning groove 19 is arranged on the convex blocks 18, the opening of the positioning groove 19 faces the rubber roller 6, the sleeve 9 is located in the positioning slot 19 after the flip 1 is closed, and the protrusion 18 is located between the latch 8 and the rubber sleeve 62 after the flip 1 is closed in this embodiment. In the printing process, when the first positioning block 93, the second positioning block 94 and the bayonet 82 respectively position the shaft sleeve 9, the arc-shaped surface 92 is in clearance fit with the side wall of the clamping groove 81, and the positioning groove 19 of the flip cover 1 positions the shaft sleeve 9, so that the shaft sleeve 9 does not rotate when the rubber roller 6 rotates; in this embodiment, an isolation shaft sleeve 13 is disposed between the shaft sleeve 9 and the rubber sleeve 62, the axial first end 63 of the rubber roller 6 sequentially penetrates through the isolation shaft sleeve 13 and the shaft sleeve 9, and the isolation shaft sleeve 13 is disposed to prevent the rubber roller 6 from driving the shaft sleeve 9 to rotate when rotating. In the installation and the dismantlement process of rubber roll 6, only need open flip 1, drive axle sleeve 9 takes place the action and drives rubber roll 6 and break away from or get into in the rubber roll groove 3, need not to carry out the dismantlement of base 2 to effectively raise the efficiency. The base 2 is symmetrically provided with a mounting groove 4 and a limiting groove 5, two ends of the rubber roller 6 along the axial direction of the rubber roller 6 are respectively connected with a shaft sleeve 9, and the shaft sleeves 9 are respectively and correspondingly mounted in the mounting groove 4 and the limiting groove 5; when the rubber roller 6 is disassembled, two hands of an operator respectively correspond to the two shaft sleeves 9, and simultaneously the two shaft sleeves 9 are rapidly rotated and penetrate through the bayonets 82, so that the whole rubber roller 6 is driven to be installed or separated from the rubber roller groove 3, and the rubber roller 6 is rapidly disassembled.

In this embodiment, an accommodating cavity 14 is formed between the middle frame 21 and the housing 22, the accommodating cavity 14 is communicated with the mounting groove 4, a driving assembly is arranged in the accommodating cavity 14, the driving assembly comprises a motor and a driving gear 15 which are connected with each other, the driving gear 15 is in driving connection with the first axial end 63 of the rubber roller 6, and the driving gear 15 and the shaft sleeve 9 are both located in the mounting groove 4. A conductive elastic sheet 16 is arranged in the mounting groove 4 on the other side opposite to the driving gear 15, and the rubber roller 6 is abutted to the conductive elastic sheet 16. Be provided with drive gear 15 in the mounting groove 4 of one side, be provided with electrically conductive shell fragment 16 in the mounting groove 4 of opposite side to there is the relation of connection between drive gear 15, electrically conductive shell fragment 16 respectively and rubber roll 6, under the prerequisite of rubber roll 6 connecting sleeve 9, drive gear 15 and direction shell fragment 16 are located mounting groove 4 respectively, make the part distribution of base 2 more reasonable. In this embodiment, an axial first end 63 of the rubber roller 6 sequentially penetrates through the isolation shaft sleeve 13 and the shaft sleeve 9 and then is connected with the driving gear 15, so that the shaft sleeve 9 is located between the driving gear 15 and the rubber sleeve 62, and an axial second end 64 of the rubber roller 6 sequentially penetrates through the isolation shaft sleeve 13 and the shaft sleeve 9 and then abuts against the conductive elastic sheet 16.

Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.

Claims

1. Thermal printer of easy dismouting of rubber roll, its characterized in that includes: a flip cover and a base, wherein the flip cover is hinged with the base, the side wall of the base facing the flip cover is provided with a rubber roller groove, a mounting groove and a limiting groove, a rotatable rubber roller is arranged in the rubber roller groove, the rubber roller groove is provided with a first opening facing the turnover cover, the mounting groove and the limiting groove are arranged at the end part of the rubber roller groove along the axial direction of the rubber roller, the mounting groove is communicated with the rubber roller groove along the axial direction of the rubber roller, the mounting groove is connected with the limiting groove along the radial direction of the rubber roller, the mounting groove is communicated with the limiting groove along the radial direction of the rubber roller, a second opening is arranged on the mounting groove towards the turnover cover, the limiting groove is provided with a third opening facing the flip cover, a clamping block is arranged between the rubber roller groove and the mounting groove, a clamping groove is formed in the clamping block, and a clamping opening is formed in the clamping groove facing the flip cover;

the rubber roll is followed the axial end connection of rubber roll has the axle sleeve, the axle sleeve passes through the bayonet socket is installed in the draw-in groove, the axle sleeve can the draw-in groove internal rotation, follow on the periphery wall of axle sleeve the radial stopper that is provided with of axle sleeve, the stopper is followed mounting groove extends to the spacing groove, the middle part of stopper is passed the second opening sets up in the mounting groove, the free end of stopper passes the third opening sets up in the spacing groove, the stopper with spacing cooperation of spacing groove.

2. The thermal printer with the easily-disassembled rubber roller as claimed in claim 1, wherein:

the rubber roller is characterized in that a first positioning block and a second positioning block are arranged on the peripheral wall of the shaft sleeve, the clamping blocks are located between the first positioning block and the second positioning block, the first positioning block is located in the rubber roller groove, and the second positioning block is arranged in the mounting groove.

3. The thermal printer with the easily-disassembled rubber roller as claimed in claim 1, wherein:

the flip orientation be provided with protruding piece on the lateral wall of base, be provided with the constant head tank on the protruding piece, the opening orientation of constant head tank the rubber roll, the axle sleeve can pass the opening of constant head tank is installed in the constant head tank.

4. The thermal printer with the easily-disassembled rubber roller as claimed in claim 1, wherein:

an avoiding concave surface is arranged on the shaft sleeve, and the avoiding concave surface is arranged in the clamping groove from the bayonet.

5. The thermal printer with the easily-disassembled rubber roller as claimed in claim 1, wherein:

a narrowing groove is arranged between the mounting groove and the limiting groove, the narrowing groove is respectively communicated with the mounting groove and the limiting groove, and the width of the narrowing groove is respectively smaller than the width of the mounting groove and the width of the limiting groove along the axial direction of the rubber roller;

the stopper includes connecting strip and joint piece, the connecting strip with joint piece integrated into one piece is connected, the connecting strip is connected the axle sleeve with between the joint piece, the connecting strip is located receive the narrow groove, the joint piece is located the spacing inslot, the joint piece is in the spacing groove with receive the intercommunication department in narrow groove with the lateral wall joint of spacing groove.

6. The thermal printer with the easily-disassembled rubber roller as claimed in claim 5, wherein:

the limiting groove is provided with a first side wall, the first side wall and the narrowing groove are oppositely arranged, and an operation gap is formed between the clamping block and the first side wall.

7. The thermal printer with the easily-disassembled rubber roller as claimed in claim 5, wherein:

the connecting strip is arranged in a bending mode.

8. The thermal printer with the easily detachable rubber roller as claimed in any one of claims 1 to 7, wherein:

the rubber roll is characterized in that the base is symmetrically provided with the mounting groove and the limiting groove along the radial central line of the rubber roll, the two axial ends of the rubber roll along the rubber roll are respectively connected with the shaft sleeve and the limiting block, and the limiting blocks are respectively and correspondingly mounted in the mounting groove and the limiting groove.

9. The thermal printer with the easily disassembled and assembled rubber roller as claimed in claim 8, wherein:

be provided with in the base and hold the chamber, hold the chamber with the mounting groove intercommunication, it is provided with drive assembly to hold the intracavity, drive assembly includes interconnect's motor and drive gear, drive gear with the axial tip drive of rubber roll is connected, drive gear with the axle sleeve all is located in the mounting groove.

10. The thermal printer with the easily disassembled and assembled rubber roller as claimed in claim 9, wherein:

and a conductive elastic sheet is arranged in the mounting groove on the other side opposite to the driving gear, and the rubber roller is abutted to the conductive elastic sheet.