CN220198897U - Paper tearing knife mounting structure of thermal printer - Google Patents
Paper tearing knife mounting structure of thermal printer Download PDFInfo
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- CN220198897U CN220198897U CN202321219907.8U CN202321219907U CN220198897U CN 220198897 U CN220198897 U CN 220198897U CN 202321219907 U CN202321219907 U CN 202321219907U CN 220198897 U CN220198897 U CN 220198897U
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- tearing knife
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- 230000007306 turnover Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000007651 thermal printing Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 7
- 238000007639 printing Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a paper tearing knife mounting structure of a thermal printer, which comprises: a housing having a paper feed passage therein; the mounting bracket is arranged in the shell; the paper tearing knife is arranged on the mounting bracket and positioned at the paper outlet of the paper feeding channel, the mounting bracket is provided with a mounting wall, a plurality of buckles are arranged on the mounting wall, the paper tearing knife is provided with a knife body part, a plurality of clamping grooves are formed in the knife body part, and each clamping groove on the paper tearing knife corresponds to each buckle in a clamping way, so that the clamping and fixing of the paper tearing knife are realized. According to the paper tearing knife mounting structure of the thermal printer, the paper tearing knife is fixed by the buckle, and the buckle is firmly fixed by optimizing the structure, so that the paper tearing knife is easy to mount and take.
Description
Technical Field
The utility model relates to the technical field of thermal printing, in particular to a paper tearing knife mounting structure of a thermal printer.
Background
The thermal printer uses the thermal printing principle, the printer converts the received data into the signals of the dot matrix to control the heating of the thermal unit, and the thermal coating on the thermal paper is heated and developed, so the thermal printer has the advantages of high speed, low noise, clear printing and convenient use, and is widely used.
In the existing thermal printer, a paper tearing knife is usually arranged at the outer side of a paper outlet channel port so that a user can peel paper with a content part from roll paper of the whole printer after printing. The common installation modes of paper tearing knives of printers on the market are as follows: one is to rivet the paper tearing knife on the bracket by heating, and the other is to lock the paper tearing knife on the bracket by using a screw. The two main problems are low efficiency, high assembly cost and large occupied structural space.
In view of this, the present utility model is specifically proposed.
Disclosure of Invention
The utility model provides a paper tearing knife mounting structure of a thermal printer, and provides a brand new assembly mode of a paper tearing knife, which is simple and reliable. Specifically, the following technical scheme is adopted:
a paper tearing knife mounting structure of a thermal printer, comprising:
a housing having a paper feed passage therein;
the mounting bracket is arranged in the shell;
the paper tearing knife is arranged on the mounting bracket and positioned at the paper outlet of the paper feeding channel, the mounting bracket is provided with a mounting wall, a plurality of buckles are arranged on the mounting wall, the paper tearing knife is provided with a knife body part, a plurality of clamping grooves are formed in the knife body part, and each clamping groove on the paper tearing knife corresponds to each buckle in a clamping way, so that the clamping and fixing of the paper tearing knife are realized.
As an optional implementation mode of the utility model, two ends of the mounting wall are respectively provided with a Z-direction limiting rib groove, two ends of the knife body of the paper tearing knife are respectively inserted into the Z-direction limiting rib grooves, and slide to the clamping grooves along the Z-direction limiting rib grooves.
As an optional implementation mode of the utility model, two ends of the mounting wall are respectively folded forwards to form Z-direction limiting ribs, and a Z-direction limiting rib groove is formed between the Z-direction limiting ribs and the mounting wall.
As an alternative embodiment of the utility model, two ends of the mounting wall are arranged in a backward concave way corresponding to the Z-direction limiting ribs.
As an optional implementation mode of the utility model, a through hole is arranged on the bottom wall of the mounting bracket corresponding to the Z-direction limiting rib groove, and the cutter body part of the paper tearing cutter penetrates through the through hole from the lower direction of the mounting bracket and then is inserted into the Z-direction limiting rib groove.
As an alternative embodiment of the present utility model, the root outer wall surface of the buckle has a chamfer structure.
As an alternative embodiment of the present utility model, a right angle structure is formed between the top wall surface of the buckle and the mounting wall.
As an alternative embodiment of the utility model, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are connected in a turnover way, and the upper shell and the lower shell are mutually buckled to form a paper feeding channel; the mounting bracket comprises an upper bracket fixed in the upper shell, and the paper tearing knife is clamped and fixed on the upper bracket.
As an alternative embodiment of the utility model, the mounting bracket comprises a lower bracket fixed in the lower housing, the upper housing and the lower housing are mutually buckled, and a paper feeding channel is formed between the upper bracket and the lower bracket.
As an optional embodiment of the present utility model, the paper tearing knife has a blade part integrally formed with the blade part, and the blade part is disposed at an inclined angle α with respect to the paper outlet direction of the paper outlet, and the inclined angle α is in a range of: alpha is more than or equal to 8 degrees and less than or equal to 15 degrees.
Compared with the prior art, the utility model has the beneficial effects that:
according to the paper tearing knife mounting structure of the thermal printer, the paper tearing knife is fixed by the buckle, and the buckle is firmly fixed by optimizing the structure, so that the paper tearing knife is easy to mount and take.
Description of the drawings:
FIG. 1 is a perspective view of the entire thermal printer (closed state) according to the embodiment of the present utility model;
FIG. 2 is a schematic view of a paper cutter mounting structure of a thermal printer according to an embodiment of the present utility model;
FIG. 3 is a schematic perspective view of an upper frame of a thermal printer according to an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a thermal printer according to an embodiment of the present utility model;
FIG. 5 is a schematic perspective view of a paper knife according to an embodiment of the present utility model;
FIG. 6 is a second cross-sectional view of a thermal printer according to an embodiment of the present utility model;
FIG. 7 is a third cross-sectional view of a thermal printer according to an embodiment of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model.
Thus, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely representative of some embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features and technical solutions in the embodiments may be combined with each other.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Referring to fig. 1 to 5, a paper tearing knife mounting structure of a thermal printer according to the present embodiment includes:
a housing (100, 200) having a paper feed passage therein;
a mounting bracket (500, 1000) disposed within the housing;
the paper tearing knife 400 is installed on the installation support and located at the paper outlet 300 of the paper feeding channel, the installation support is provided with an installation wall 501, a plurality of buckles 504 are arranged on the installation wall 501, the paper tearing knife 400 is provided with a knife body part 402, a plurality of clamping grooves 403 are formed in the knife body part 402, and each clamping groove 403 on the paper tearing knife 400 is correspondingly clamped with each buckle 504, so that the paper tearing knife 400 is clamped and fixed.
According to the paper tearing knife mounting structure of the thermal printer, the paper tearing knife is fixed by the buckle, and the buckle is fixed firmly through the optimization of the structure, so that the paper tearing knife is easy to mount and take.
Further, in order to ensure the stability of installing the paper tearing knife 400, in the paper tearing knife installing structure of the thermal printer of this embodiment, two ends of the installing wall 501 are respectively provided with a Z-direction limiting rib groove 502, two ends of the knife body 502 of the paper tearing knife 400 are respectively inserted into the Z-direction limiting rib groove 502, and slide along the Z-direction limiting rib groove 502 to the buckle 504 to be clamped with the clamping groove 403.
The paper tearing knife mounting structure of the thermal printer realizes the principle that: the buckle 504 on the bracket limits the XY direction of the paper tearing knife 400, the Z-direction limit rib groove 502 on the bracket limits the Z direction of the paper tearing knife 400, the paper tearing knife 400 is inserted into the Z-direction limit rib groove 502 from the lower part until the buckle 504 of the bracket is clamped into the clamping groove 403 of the paper tearing knife 400, and the clamping and fixing are realized.
Specifically, in this embodiment, two ends of the mounting wall 501 are respectively folded forward to form a Z-directional limiting rib 503, and a Z-directional limiting rib groove 502 is formed between the Z-directional limiting rib 503 and the mounting wall 501.
As an optional implementation manner of this embodiment, two ends of the mounting wall 501 are disposed in a manner that the two ends of the mounting wall correspond to the Z-direction limiting ribs 503 and are recessed backward, so that the paper tearing knife 400 provides a deformation allowance space for deformation of the paper tearing knife 400 during mounting, and assembly is convenient.
As an optional implementation manner of this embodiment, in this embodiment, a through hole is provided on the bottom wall of the mounting bracket corresponding to the Z-direction limiting rib groove 502, and the blade part 402 of the paper tearing knife 400 is inserted into the Z-direction limiting rib groove 502 after passing through the through hole from the lower direction of the mounting bracket.
As an alternative implementation manner of this embodiment, in the paper tearing knife installation structure of the thermal printer of this embodiment, the outer wall surface of the root portion of the buckle 400 has a chamfer structure D, so that the paper tearing knife is convenient to assemble.
As an optional implementation manner of this embodiment, in the paper tearing knife mounting structure of the thermal printer of this embodiment, a right angle structure is formed between the top wall surface of the buckle 400 and the mounting wall, so as to ensure that the paper tearing knife 400 is not easy to fall off.
The casing in this embodiment includes an upper casing 100 and a lower casing 200, where the upper casing 100 and the lower casing 200 are connected in a reversible manner, and the upper casing 100 and the lower casing 200 are fastened with each other to form a paper feeding channel; the mounting bracket includes an upper bracket 500 fixed in the upper housing 100, and the paper tearing knife 400 is fastened and fixed on the upper bracket 500.
The mounting bracket in this embodiment includes a lower bracket 1000 fixed in the lower housing 200, the upper housing 100 and the lower housing 200 are fastened to each other, and a paper feeding channel is formed between the upper bracket 500 and the lower bracket 1000.
Referring to fig. 6, in this embodiment, the paper tearing knife 400 has a blade portion 401 integrally formed with a knife body 402, and the blade portion 401 is disposed at an inclined angle α with respect to the paper discharging direction of the paper outlet 300, where the inclined angle α is in the range of: alpha is more than or equal to 8 degrees and less than or equal to 15 degrees.
The thermal printer of this embodiment will tear paper sword 400 and install in paper outlet 300, the cutting edge portion 401 of tearing paper sword 400 is slope contained angle alpha setting with the paper outlet direction, 8 is less than or equal to alpha is less than or equal to 15, like this, when carrying out the operation of tearing paper, the user will print paper slightly upward slope and pull and can receive the cutting edge portion 401 effort of tearing paper sword 400, tear the printing paper, set up the mode that needs the user to upwards pull the printing paper great angle for current paper sword perpendicular to paper outlet direction, the paper sword structure is torn to the thermal printer of this embodiment, the cutting edge portion 401 of tearing paper sword 400 is towards the compatibility height, reduce the requirement to the user operation of tearing paper.
The inclined included angle alpha of the embodiment is more than or equal to 8 degrees and less than or equal to 15 degrees, when a user performs paper tearing operation, the paper tearing force of the user can be decomposed into horizontal direction and vertical direction to be applied to the thermal printing paper 600, and the existing thermal printer with the paper tearing knife perpendicular to the paper outlet direction is provided, and only the component of the vertical direction of the paper tearing force of the user is acted on the printing paper, so that the paper tearing knife structure of the thermal printer is simpler in user operation and easier in paper tearing.
As an alternative implementation manner of this embodiment, in the paper tearing knife structure of the thermal printer of this embodiment, the paper outlet 300 has a paper outlet direction that is horizontal, the paper tearing knife 400 has a knife body portion 402 integrally formed with a knife edge portion 401, the knife edge portion 401 is turned towards one side of the knife body portion 402, the knife body portion 402 is fixedly mounted on the upper bracket 500, and the knife edge portion 401 is located above the paper feeding channel.
As another alternative of this embodiment, in the paper tearing knife structure of the thermal printer of this embodiment, the paper outlet direction of the paper outlet 300 is a horizontal direction, the paper tearing knife 400 has a knife body portion 402 integrally formed with a knife edge portion 401, the knife edge portion 401 is turned towards one side of the knife body portion 402, the knife body portion 402 is fixedly mounted on the lower bracket 1000, and the knife edge portion 401 is located below the paper feeding channel. For this embodiment, when the paper tearing operation is performed, the thermal printing paper 600 needs to be pulled obliquely downward.
Specifically, in order to realize the installation of the paper tearing knife, the included angle γ between the knife body 402 and the knife edge 401 in this embodiment is 98 ° to 105 °, and the knife body 402 is disposed along the vertical direction.
Referring to fig. 7, in this embodiment, the outermost contour line S of the outer side wall of the upper case 100 on the side of the paper outlet 300 is disposed beyond the knife edge 401 of the paper tearing knife 400 in the horizontal direction, and the outermost contour line S of the outer side wall of the lower case 200 on the side of the paper outlet 300 is disposed beyond the knife edge 401 of the paper tearing knife 400 in the horizontal direction. In this way, the blade 401 of the paper tearing knife 400 is prevented from protruding out of the upper case 100 or the lower case 200, and the use is ensured without cutting hands.
Specifically, in this embodiment, the distance L between the outermost contour line S of the outer side wall of the upper case 100 located at the paper outlet 300 side and the edge 401 of the paper tearing knife 400 in the horizontal direction is 0.2mm to 0.4mm.
In this embodiment, a distance L between an outermost contour line of an outer side wall of the lower case 200 located at the paper outlet 300 side and a knife edge of the knife edge 401 of the paper knife 400 in the horizontal direction is 0.2mm to 0.4mm.
In this embodiment, the upper casing 100 is provided with an upper paper tearing groove 1100 at the paper outlet 300, and/or the lower casing 200 is provided with a lower paper tearing groove 1100 at the paper outlet 300. Thus, the cutting edge of the paper tearing knife 300 is positioned, and the shell is glued to be in a position for avoiding, so that the paper tearing space is ensured to be enough.
As an alternative implementation manner of this embodiment, the blade 401 of the paper tearing knife 400 in this embodiment has a saw-tooth structure, and the included angle between the teeth tips of the saw-tooth structure is less than or equal to 90 °. Specifically, the tooth tip included angle β=60° of the serration structure, and the tooth tip height h=0.7 mm. The structural design of the paper tearing knife of the embodiment can tear the thermal printing paper more easily.
A paper bin 900 for placing a thermal printing paper roll and a paper feed passage communicating with the paper bin 900 are formed between the upper and lower brackets 500 and 1000 of the thermal printer of the present embodiment.
The thermal printer of the present embodiment includes:
a thermal printhead assembly 700 mounted on the upper frame 100 and including a thermal printhead extending into the paper feed path;
a paper feed roller assembly 800 mounted on the lower frame 1000 and including a paper feed roller at least partially disposed in the paper feed path;
the main control board of the thermal printer controls the paper feed roller assembly 800 to drive one end of the thermal printing paper roll in the paper bin 900 to be transported along the paper feed channel, and when the thermal printing paper is transported to the thermal printing head assembly 700, the main control board controls the thermal printing head to perform thermal printing on the thermal printing paper.
The above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and although the present utility model has been described in detail in the present specification with reference to the above embodiments, the present utility model is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present utility model; all technical solutions and modifications thereof that do not depart from the spirit and scope of the utility model are intended to be included in the scope of the appended claims.
Claims (10)
1. A paper tearing knife mounting structure of a thermal printer, comprising:
a housing having a paper feed passage therein;
the mounting bracket is arranged in the shell;
the paper tearing knife is arranged on the mounting bracket and positioned at the paper outlet of the paper feeding channel, the mounting bracket is provided with a mounting wall, a plurality of buckles are arranged on the mounting wall, the paper tearing knife is provided with a knife body part, a plurality of clamping grooves are formed in the knife body part, and each clamping groove on the paper tearing knife corresponds to each buckle in a clamping way, so that the clamping and fixing of the paper tearing knife are realized.
2. The paper tearing knife mounting structure of the thermal printer according to claim 1, wherein two ends of the mounting wall are respectively provided with a Z-direction limiting rib groove, two ends of a knife body of the paper tearing knife are respectively inserted into the Z-direction limiting rib grooves, and slide to the clamping grooves along the Z-direction limiting rib grooves.
3. The paper tearing knife mounting structure of the thermal printer according to claim 2, wherein two ends of the mounting wall are respectively folded forwards to form a Z-direction limiting rib, and a Z-direction limiting rib groove is formed between the Z-direction limiting rib and the mounting wall.
4. A paper tearing knife mounting structure of a thermal printer according to claim 3, wherein two ends of the mounting wall are arranged in a backward concave manner corresponding to the Z-direction limiting rib.
5. The paper tearing knife mounting structure of the thermal printer according to claim 2, wherein a through hole is formed in the bottom wall of the mounting bracket corresponding to the Z-direction limiting rib groove, and the knife body of the paper tearing knife is inserted into the Z-direction limiting rib groove after penetrating through the through hole from the lower direction of the mounting bracket.
6. The paper tearing knife mounting structure of a thermal printer according to claim 2, wherein the root outer wall surface of the buckle is provided with a bevel structure.
7. The printer paper cutter mounting structure according to claim 1, wherein the top wall surface of the buckle and the mounting wall are in a right-angle structure.
8. The paper tearing knife mounting structure of the thermal printer according to claim 1, wherein the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are connected in a turnover manner, and the upper shell and the lower shell are buckled with each other to form a paper feeding channel; the mounting bracket comprises an upper bracket fixed in the upper shell, and the paper tearing knife is clamped and fixed on the upper bracket.
9. The paper tearing knife mounting structure of a thermal printer of claim 8, wherein the mounting bracket comprises a lower bracket fixed in the lower housing, the upper housing and the lower housing are mutually buckled, and a paper feeding channel is formed between the upper bracket and the lower bracket.
10. The paper tearing knife mounting structure of a thermal printer according to claim 1, wherein the paper tearing knife is provided with a knife edge part integrally formed with the knife body part, an inclined included angle alpha is formed between the knife edge part and the paper outlet direction of the paper outlet, and the range of the inclined included angle alpha is as follows: alpha is more than or equal to 8 degrees and less than or equal to 15 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321219907.8U CN220198897U (en) | 2023-05-19 | 2023-05-19 | Paper tearing knife mounting structure of thermal printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321219907.8U CN220198897U (en) | 2023-05-19 | 2023-05-19 | Paper tearing knife mounting structure of thermal printer |
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| Publication Number | Publication Date |
|---|---|
| CN220198897U true CN220198897U (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321219907.8U Active CN220198897U (en) | 2023-05-19 | 2023-05-19 | Paper tearing knife mounting structure of thermal printer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118269489A (en) * | 2024-05-29 | 2024-07-02 | 珠海恒茂电子科技有限公司 | Stable printer print head structure |
-
2023
- 2023-05-19 CN CN202321219907.8U patent/CN220198897U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118269489A (en) * | 2024-05-29 | 2024-07-02 | 珠海恒茂电子科技有限公司 | Stable printer print head structure |
| CN118269489B (en) * | 2024-05-29 | 2024-08-27 | 珠海恒茂电子科技有限公司 | Stable printer print head structure |
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