CN112895731A

CN112895731A - Novel thermal printer

Info

Publication number: CN112895731A
Application number: CN202110136315.9A
Authority: CN
Inventors: 许开河; 陈方宾
Original assignee: Rongda Hezhong Xiamen Technology Group Co ltd
Current assignee: Rongda Hezhong Xiamen Technology Group Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-06-04
Anticipated expiration: 2041-02-01
Also published as: CN112895731B

Abstract

The invention provides a novel thermal printer, which comprises an upper shell assembly, a lower shell assembly, a thermal sensitive assembly and a rubber roller, wherein the upper shell assembly and the lower shell assembly are arranged oppositely; the supporting step is provided with a first arc-shaped groove used for limiting the shaft sleeve, the lower support and the first arc-shaped groove are oppositely provided with a second arc-shaped groove, and the shaft sleeve is arranged between the first arc-shaped groove and the second arc-shaped groove. According to the thermal printer, the supporting steps are arranged on the two sides of the lower shell, and the lower support is matched to fix the rubber roller, so that the assembly error is reduced, and the problem of left and right assembly errors of the rubber roller is solved, so that the left and right balance of the rubber roller is better, and the printing is more stable.

Description

Novel thermal printer

Technical Field

The invention relates to the technical field of printers, in particular to a novel thermal printer.

Background

The thermal printer has a working principle that a semiconductor heating element is arranged on a printing head, and the printing head can print required patterns after being heated and contacting thermal printing paper, and the principle of the thermal printer is similar to that of a thermal fax machine. The image is generated by heating to cause a chemical reaction in the film. The chemical reaction of the thermal printer is carried out at a certain temperature. High temperatures accelerate this chemical reaction. When the temperature is lower than 60 ℃, the paper needs to be changed into dark color for a long time, even for several years; and when the temperature is 200 ℃, the reaction is completed within several microseconds.

However, the existing thermal printer has the following disadvantages:

firstly, a thermal printer generally comprises a thermal sensitive assembly and a rubber roller, wherein printing paper is printed by the thermal sensitive assembly, meanwhile, the rubber roller rotates to drive the printing paper to move, the rubber roller of the traditional thermal printer is fixed by a motor support and a lower cover at the same time, and the motor support is locked by a screw, so that the fixed height of the rubber roller is easily different, the balance of the rubber roller is poor, and the problem of uneven printing is caused;

second, thereby the lock of traditional paper knife that tears adoption screw is paid and is reached the assembly effect, and the assembly process is loaded down with trivial details troublesome, leads to the waste of unnecessary man-hour material, and can't pay through the screw lock in some models, leads to the unstable scheduling problem that drops easily of assembly, and current paper knife that tears moreover does not do and prevents that static is handled or prevent that static effect is poor, tears the in-process and produces static, leads the first piece of paper to puncture bad and dirty remaining etc..

Thirdly, the thermal print head of the existing thermal printer is installed on the upper bracket, when the width of the upper bracket is wide, deformation is easy to occur (especially, heat is generated in the thermal printing process, and the upper bracket is easy to deform in a hotter environment), so that the problem that the thickness of printed writing traces and the definition degree are not uniform exists in the printing process, a special consumer is difficult to recognize the unclear writing, moreover, two torsion spring structures of the existing thermal printer quick opening and closing mechanism are not uniform, and the installation is carried out according to the requirement, so that the installation efficiency is reduced.

In view of the above, the present inventors have devised a novel thermal printer, and have made this.

Disclosure of Invention

In order to solve the problems, the technical scheme of the invention is as follows:

a novel thermal printer comprises an upper shell assembly, a lower shell assembly, a thermal sensitive assembly and a rubber roller, wherein the upper shell assembly and the lower shell assembly are arranged oppositely, the thermal sensitive assembly is arranged on the upper shell assembly, the rubber roller is arranged on the lower shell assembly, the lower shell assembly comprises a lower shell and a lower support, a central shaft is arranged in the rubber roller, shaft sleeves located between the lower shell and the lower support are arranged at two ends of the central shaft, and a supporting step for supporting the shaft sleeves is arranged on the lower shell;

the supporting step is provided with a first arc-shaped groove used for limiting the shaft sleeve, the lower support and the first arc-shaped groove are oppositely provided with a second arc-shaped groove, and the shaft sleeve is arranged between the first arc-shaped groove and the second arc-shaped groove.

Furthermore, the upper shell assembly further comprises an upper shell and an upper support, and the thermosensitive assembly comprises a spring fixing plate, a thermosensitive head piece arranged on the upper support, and a spring arranged between the thermosensitive head piece and the spring fixing plate.

Further, go up the casing inside wall and set up the paper tearing sword, set up two fixed positions on the paper tearing sword at least, go up the inboard setting of casing and fix a position complex rivet hot step, fixed position is including setting up in the T type groove at paper tearing sword edge, with the circular port of T type groove intercommunication.

Further, still set up at least one elastic sheet that is used for deriving static on the paper tearing sword, the elastic sheet and spring fixed plate butt.

Further, the paper tearing knife comprises a fixed main body and a knife tooth main body which forms an included angle with the fixed main body, and the fixed position is arranged on the fixed main body.

Furthermore, the fixed positions are two and symmetrically arranged on the fixed main body.

Further, the fixed positions select the number according to the size of the printer model.

Further, when the printer is eight inches, the number of the fixed positions is six.

Furthermore, the number of the elastic pieces is two, and the two elastic pieces are symmetrically arranged.

Furthermore, the inner side wall of the upper shell is provided with a limiting step for supporting the paper tearing knife.

Furthermore, the T-shaped groove is communicated with the circular hole through a connecting channel.

Furthermore, the upper bracket is arranged on the inner side of the upper shell, and at least one group of fixing components is arranged between the upper shell and the upper bracket and close to the position of the thermal head piece.

Furthermore, the fixed assemblies are arranged in two groups, and the two groups of fixed assemblies are arranged side by side.

Further, fixed subassembly is including setting up in the inboard first support column of upper housing, set up in the upper bracket and with the corresponding second support column of first support column and pass the second support column and with the bolt of first support column spiro union.

Furthermore, a support plate is arranged between the two groups of fixing assemblies and on the upper shell, namely a support plate is arranged between the first support columns.

Further, a first groove for placing the head of the bolt is further formed in the second support.

Furthermore, the upper shell assembly further comprises a quick opening and closing mechanism which is arranged on the upper support and used for quickly opening or closing the upper shell assembly.

Further, quick mechanism that opens and shuts is including rotating piece, two and rotate and be connected and both ends set up the pivot on the upper bracket and two torsional springs that set up in the pivot, it includes connecting portion and sets up in the buckle at connecting portion both ends to rotate the piece, the inferior valve subassembly sets up in buckle complex draw-in groove.

Furthermore, the connecting part and the buckle are of an integrated structure.

Further, the torsion spring includes that the main part of pivot, the first portion and the second of leaning on of being connected with the main part are leaned on to the portion to the cover, first portion of leaning on leans on in the upper bracket, the second is leaned on the portion and is leaned on in connecting portion.

Further, first support portion and second support portion all are the L type, and inwards set up.

According to the thermal printer, the supporting steps are arranged on the two sides of the lower shell, and the lower support is matched to fix the rubber roller, so that the assembly error is reduced, and the problem of left and right assembly errors of the rubber roller is solved, so that the left and right balance of the rubber roller is better, and the printing is more stable.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Wherein:

FIG. 1 is a schematic view of the construction of a thermal printer according to the present invention;

FIG. 2 is a schematic view of the construction of the lower housing of the present invention;

FIG. 3 is a schematic structural view of the lower bracket of the present invention;

FIG. 4 is a schematic structural view of the rubber roller of the present invention;

FIG. 5 is a schematic view of the mounting of the peel knife configuration of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 of the present invention;

FIG. 7 is a schematic view of the construction of the peel knife of the present invention;

FIG. 8 is a schematic illustration of the results of the upper shell assembly of the present invention;

FIG. 9 is an enlarged fragmentary view of FIG. 8 of the present invention;

FIG. 10 is a schematic structural view of the upper bracket of the present invention;

FIG. 11 is a schematic structural view of the quick opening and closing mechanism of the present invention;

FIG. 12 is a schematic view of the installation of the torsion spring of the present invention;

fig. 13 is a schematic structural view of the torsion spring of the present invention.

Description of reference numerals:

10. an upper housing assembly; 11. an upper housing; 111. hot riveting the step; 112. a limiting step; 113. a first support column; 114. a support plate; 12. an upper bracket; 121. a second support column; 1211. a first groove; 20. a lower housing assembly; 21. a lower housing; 211. supporting a step; 2111. a first arc-shaped slot; 22. a lower bracket; 221. a second arc-shaped slot; 222. a card slot; 30. a heat sensitive component; 31. a spring fixing plate; 32. a thermal head sheet; 40. a rubber roller; 41. a central shaft; 42. a shaft sleeve; 50. a paper tearing knife; 51. a fixed body; 511. fixing the position; 5111. a T-shaped groove; 5112. a circular hole; 5113. a connecting channel; 52. a cutter tooth body; 53. an elastic sheet; 60. a quick opening and closing mechanism; 61. a rotating member; 611. a connecting portion; 612. buckling; 62. a rotating shaft; 63. a torsion spring; 631. a main body portion; 632. a first abutting portion; 633. a second abutting portion.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 13, a novel thermal printer as a preferred embodiment of the present invention includes an upper casing assembly 10 and a lower casing assembly 20, which are oppositely disposed, a thermal sensitive assembly 30 disposed on the upper casing assembly 10, and a rubber roller 40 disposed on the lower casing assembly 20, wherein the lower casing assembly 20 includes a lower casing 21 and a lower bracket 22, a central shaft 41 is disposed in the rubber roller 40, a shaft sleeve 42 disposed between the lower casing 21 and the lower bracket 22 is disposed at two ends of the central shaft 41, and a supporting step 211 for supporting the shaft sleeve 42 is disposed on the lower casing 21; support and set up the first arc 2111 that is used for restricting axle sleeve 42 on the step 211, lower carriage 22 sets up second arc 221 with first arc 2111 relative position, axle sleeve 42 sets up between first arc 2111 and second arc 221, support step 211 through setting up in the both sides of casing 21 down, cooperate the lower carriage 22 to realize fixing of rubber roll 40 simultaneously, reduce assembly error, assembly error problem about improving rubber roll 40, thereby make the better and more stable printing of the left and right sides equilibrium of rubber roll 40.

The upper case assembly 10 further includes an upper case 11 and an upper bracket 12, and the thermal sensing assembly 30 includes a spring fixing plate 31, a thermal head chip 32 disposed on the upper bracket 12, and a spring disposed between the thermal head chip 32 and the spring fixing plate 31.

A paper tearing knife 50 is arranged on the inner side wall of the upper shell 11, at least two fixing positions 511 are arranged on the paper tearing knife 50, and the two fixing positions are symmetrically arranged on the fixing main body 51; the inner side of the upper shell 11 is provided with a hot riveting step 111 matched with the fixing position 511, the fixing position 511 comprises a T-shaped groove 5111 arranged at the edge of the paper tearing knife 50 and a circular hole 5112 communicated with the T-shaped groove 5111, and the T-shaped groove 5111 and the circular hole 5112 are communicated through a connecting channel 5113, so that the paper tearing knife 50 can be conveniently and better hot riveted on the inner side wall of the upper shell 11; when the paper tearing knife 50 is installed, the fixing position 511 is aligned with the hot riveting step 111, the hot riveting is directly conducted, the circular hole 5112 and the T-shaped groove 5111 are used for achieving positioning and fixing, the stability of the installed paper tearing knife 50 is improved, and the problems of complex assembling process or difficulty in assembling and the like are solved. The inner side wall of the upper shell 11 is provided with a limiting step 112 for supporting the paper tearing knife 50, and the limiting step 112 can be used for ensuring that the paper tearing knife 50 is better limited during hot riveting.

The paper tearing knife 50 comprises a fixing body 51 and a knife tooth body 52 arranged at an included angle with the fixing body 51, wherein the fixing body 51 is used for matching with the hot riveting step 111 to play a fixing role, the knife tooth body 52 is used for tearing paper, and a fixing position 511 is arranged on the fixing body 51; the number of the fixed positions 511 is selected according to the size of the printer model, and when the printer is eight inches, the number of the fixed positions 511 is six.

The paper tearing knife 50 is also provided with at least one elastic sheet 53 for leading static electricity out, and the elastic sheet 53 is abutted against the spring fixing plate 31; preferably, two elastic pieces 53 are provided, and the two elastic pieces 53 are symmetrically provided. Specifically, the fixing main body 51 is bent to form an elastic piece 53 at the left and right sides and is ingeniously connected to the spring fixing plate 31 (the existing spring fixing plate 31 is grounded), the grounding assembly process of the paper tearing knife 50 is reduced, the fixing main body 51 is directly hot-riveted in place during installation, other redundant operations are not added in the whole process, static electricity can be directly conducted to the spring fixing plate 31 by utilizing the elastic piece 53, and the static electricity leading-out efficiency is prevented from being reduced by adding other parts; the elastic piece 53 prevents the head piece from being badly punctured and the remaining of dirt.

The upper bracket 12 is arranged on the inner side of the upper shell 11, at least one group of fixing components are arranged between the upper shell 11 and the upper bracket 12 and close to the thermal head sheet 32, and the fixing components are positioned at the transverse center positions of the upper bracket 12 and the upper shell 11; wherein the number of fixed components is selected according to the width of the upper bracket 12, for example, when the thermal printer is eight inches, the fixed components are arranged in two groups, specifically, the two groups of fixed components are arranged side by side. A support plate 114 is disposed between the two sets of fixing components and on the upper housing, i.e., the support plate 114 is disposed between the first support columns 113.

The fixed subassembly is including setting up in the inboard first support column 113 of last shell, set up in upper bracket 12 and with the corresponding second support column 121 of first support column 113 and pass second support column 121 and with the bolt of the 113 spiro unions of first support column, wherein first support column 113 is close to the central point of last shell and puts, first support column 113 sets up with second support column 121 relatively, both can play certain supporting role, and through bolt locking, the better position of restriction upper bracket 12, and can prevent effectively that it from warping. The second support is further provided with a first groove 1211 for placing the head of the bolt, and after the bolt is locked, the head of the bolt is hidden in the first groove 1211 to avoid interference on printing paper.

The upper housing assembly 10 further includes a quick-opening and closing mechanism 60 disposed on the upper bracket 12 for quickly opening and closing the upper housing assembly 10. Specifically, the quick opening and closing mechanism 60 includes a rotating member 61, two rotating shafts 62 rotatably connected to the rotating member 61 and having two ends disposed on the upper bracket 12, and two torsion springs 63 disposed on the rotating shafts 62, the rotating member 61 includes a connecting portion 611 and two fasteners 612 disposed at two ends of the connecting portion 611, and the lower housing 21 is disposed in the engaging slot 222 engaged with the fasteners 612. Preferably, the connecting portion 611 and the latch 612 are of an integral structure, so as to facilitate installation of the rotating member 61.

The torsion spring 63 includes a main body portion 631 sleeved on the rotating shaft 62, a first abutting portion 632 and a second abutting portion 633 connected with the main body portion 631, the first abutting portion 632 abuts against the upper bracket 12, the second abutting portion 633 abuts against the connecting portion 611, the first abutting portion 632 and the second abutting portion 633 are both L-shaped and are disposed inward, that is, the horizontal portion of the L-shaped faces the center of the main body portion 631, and therefore, no matter which torsion spring 63 is installed on any side, selection is not required.

In summary, the thermal printer of the present invention has the following advantages:

firstly, the thermal printer realizes the fixation of the rubber roller by arranging the supporting steps on the two sides of the lower shell and matching with the lower support, so that the assembly error is reduced, and the problem of the left and right assembly error of the rubber roller is solved, so that the left and right balance of the rubber roller is better and the printing is more stable;

secondly, the paper tearing knife is provided with the fixing position, wherein the fixing position comprises a T-shaped groove and a circular hole, and hot riveting is combined, so that the convenient assembly and the stable locking and fixing effect are achieved, and the problems of complicated assembly process or difficult assembly are solved;

thirdly, the fixing component is arranged between the upper shell and the upper support, the upper support is limited to the inner side of the upper shell through the fixing component, and the problems that the upper support is too long and deformation occurs in the printing process are solved.

The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.

Claims

1. A novel thermal printer comprises an upper shell assembly, a lower shell assembly, a thermal sensitive assembly and a rubber roller, wherein the upper shell assembly and the lower shell assembly are arranged oppositely, the thermal sensitive assembly is arranged on the upper shell assembly, and the rubber roller is arranged on the lower shell assembly;

2. The novel thermal printer according to claim 1, wherein the upper casing assembly further comprises an upper casing and an upper bracket, and the thermal assembly comprises a spring fixing plate, a thermal head piece arranged on the upper bracket, and a spring arranged between the thermal head piece and the spring fixing plate.

3. The novel thermal printer according to claim 2, wherein a paper tearing knife is disposed on an inner side wall of the upper housing, at least two fixing positions are disposed on the paper tearing knife, a hot riveting step matched with the fixing positions is disposed on an inner side of the upper housing, and the fixing positions include a T-shaped groove disposed on an edge of the paper tearing knife and a circular hole communicated with the T-shaped groove.

4. The novel thermal printer according to claim 3, wherein the paper tearing blade is further provided with at least one elastic sheet for leading static electricity out, and the elastic sheet is abutted with the spring fixing plate.

5. The thermal printer as claimed in claim 3, wherein the paper tearing knife includes a fixing body and a knife tooth body disposed at an angle with respect to the fixing body, and the fixing position is disposed on the fixing body.

6. The novel thermal printer according to claim 2, wherein the upper bracket is disposed inside the upper casing, and at least one set of fixing components is disposed between the upper casing and the upper bracket and near the thermal head chip.

7. The novel thermal printer according to claim 6, wherein the fixing component comprises a first supporting column disposed inside the upper housing, a second supporting column disposed on the upper bracket and corresponding to the first supporting column, and a bolt passing through the second supporting column and screwed with the first supporting column.

8. The thermal printer of claim 2, wherein the upper housing assembly further comprises a quick opening and closing mechanism disposed on the upper bracket for quickly opening and closing the upper housing assembly.

9. The thermal printer as claimed in claim 8, wherein the quick opening/closing mechanism includes a rotating member, two rotating shafts rotatably connected to the rotating member and having two ends disposed on the upper bracket, and two torsion springs disposed on the rotating shafts, the rotating member includes a connecting portion and two buckles disposed at two ends of the connecting portion, and the lower casing assembly is disposed in the buckle-fitting slot.

10. The thermal printer according to claim 9, wherein the torsion spring includes a main body sleeved on the rotation shaft, a first abutting portion and a second abutting portion connected to the main body, the first abutting portion abuts against the upper bracket, and the second abutting portion abuts against the connecting portion.