Thermal printing head
By using hydraulically driven pressing plate and telescopic rod system in the thermal print head, instead of the traditional shrapnel, the problem of high paper jam frequency of thermal print head is solved, and the effect of removing paper jams is achieved without overall disassembly, reducing the failure rate.
Patent Information
- Application Number
- CN202422406386.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing thermal print heads are prone to paper jamming during thermal printing, which leads to the need to remove the shrapnel as a whole to remove the paper jamming. The frequency is high and difficult to operate, which increases the failure rate.
A thermal printhead is designed, using a hydraulically driven press spring with a pressing plate and a telescopic rod. Instead of the traditional shrapnel, the thermal printhead paper can be removed by hydraulic lifting and lowering without disassembling the overall structure to reduce the paper jam frequency.
It effectively reduces the paper jam frequency of the thermal print head, avoids the need to remove the shrapnel every time, improves the stability and reliability of thermal printing, and reduces the failure rate.
Smart Images
Figure CN223014172U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal printing sheets, in particular to a thermal print head. Background Technique
[0002] The thermal printing sheet is composed of a row of heating elements, all of which have the same resistance. These elements are arranged densely, ranging from 200 dpi to 600 dpi. When a certain current passes through these elements, they will quickly generate high temperature. When the medium coating encounters these elements, the temperature will rise in a very short time, and the medium coating will undergo a chemical reaction and show color. The paper width is 58mm7, the dot pitch is 0.125mm8, and the dot size is 0.125mm * 0.12mm.
[0003] The existing thermal printing sheet is installed on the thermal print head through a cross beam and a vertically downward mounting plate. When paper jams occur during thermal printing, it is necessary to disassemble the elastic piece on the thermal print head as a whole to clear the paper on the thermal print head. The paper jam frequency is too high, and it is not easy to disassemble the elastic piece each time, resulting in an increasing failure rate of the thermal printer. Content of the Utility Model
[0004] The purpose of the utility model is to provide a thermal print head to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A thermal print head includes a printing sheet mounting base, a stepping motor, thermal paper, and a mounting component. A stepping motor is arranged at the driving part on the printing sheet mounting base, and thermal paper is arranged at the mounting part on the printing sheet mounting base. The stepping motor and thermal paper are installed at the fixing part on the mounting component. It also includes:
[0007] A pressing component, installed on the printing sheet mounting base;
[0008] An elastic piece component, arranged on the printing sheet mounting base;
[0009] Among them, pressing plates are arranged on both sides of the top end of the printing sheet mounting base. A hydraulic cylinder is movably installed inside the pressing plate, a protective frame is movably installed at the rear end of the pressing plate, a snap bolt penetrates through the mounting part on the protective frame, a connecting frame is threadedly connected to the front end of the pressing plate, and a rubber roller is movably installed inside the protective frame.
[0010] For the thermal print head as described above: The snap bolt and the protective frame are threadedly buckled and protected outside the rubber roller, and the rubber roller is disassembled and replaced by threading the snap bolt.
[0011] The thermal printing head as described above: The thermal paper is movably mounted inside the pressing plate and the hydraulic cylinder through a printing sheet mounting base.
[0012] The thermal printing head as described above: The pressing assembly includes a telescopic rod movably mounted at the bottom end of the pressing plate. The telescopic rod penetrates inside the pressing plate and is movably mounted on the hydraulic cylinder, and a pressing spring is movably mounted outside the telescopic rod.
[0013] The thermal printing head as described above: The pressing spring and the pressing plate are clamped inside the printing sheet mounting base by the hydraulic drive of the hydraulic cylinder.
[0014] The thermal printing head as described above: The elastic sheet assembly includes a thermal printing head mounting frame mounted inside the printing sheet mounting base, and buckle holes are provided on both sides of the thermal printing head mounting frame.
[0015] The thermal printing head as described above: The telescopic rod can be movably mounted inside the thermal printing head mounting frame and the buckle holes, and the pressing spring and the pressing plate on the telescopic rod press on the thermal paper.
[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The pressing spring can elastically press on the thermal paper and the thermal printing paper. The pressing plate and the telescopic rod can replace the elastic sheet and can drive the pressing spring to press on the thermal paper and the thermal printing paper. When paper jams occur during the thermal printing process, it is not necessary to disassemble the elastic sheet on the thermal printing head as a whole. The pressing plate and the telescopic rod can be lifted and lowered hydraulically, and the thermal printing head paper can be removed, reducing the frequency of paper jams. It is not necessary to disassemble the elastic sheet every time to clear paper jams.
[0017] When paper jams occur in the thermal printing head, under the hydraulic drive of the hydraulic cylinder, the pressing plate and the telescopic rod are lifted and lowered, and then the thermal printing head paper on the thermal printing head is removed and cleared, reducing the frequency of paper jams in the thermal printing head. The pressing spring can elastically return to its position, facilitating the normal thermal printing of the thermal printing head paper on the thermal printing head, and can also reduce the failure rate of the thermal printer. Brief Description of the Drawings
[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;
[0019] Figure 2 It is a structural schematic diagram of the mounting assembly of the present utility model;
[0020] Figure 3 It is a structural schematic diagram of the pressing assembly of the present utility model;
[0021] Figure 4 It is a structural schematic diagram of the elastic sheet assembly of the present utility model.
[0022] In the figure: 1. Print sheet mounting base; 2. Snap bolt; 3. Protective frame; 4. Pressing plate; 5. Hydraulic cylinder; 6. Connecting frame; 7. Stepper motor; 8. Thermal paper; 9. Rubber roller; 10. Pressing spring; 11. Telescopic rod; 12. Thermal print head mounting bracket; 13. Snap hole. Detailed implementation manners
[0023] The following will refer to the accompanying drawings to detail various exemplary embodiments, features and aspects of the present application. The same reference numerals in the drawings denote elements with the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.
[0024] The special term "exemplary" here means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" here does not have to be construed as superior or better than other embodiments.
[0025] In addition, for better illustration of the present application, numerous specific details are given in the following detailed embodiments. Those skilled in the art should understand that the present application can be implemented without some specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.
[0026] Please refer to Figures 1 to 4 , a thermal print head is proposed, including a print sheet mounting base 1, a stepper motor 7, thermal paper 8 and a mounting assembly.
[0027] A stepper motor 7 is provided at the driving position on the print sheet mounting base 1, thermal paper 8 is provided at the mounting position on the print sheet mounting base 1, the stepper motor 7 and thermal paper 8 are mounted at the fixing position on the mounting assembly, a pressing assembly is mounted on the print sheet mounting base 1; a shrapnel assembly is provided on the print sheet mounting base 1;
[0028] The stepper motor 7 is movably mounted on the print sheet mounting base 1, so that the thermal paper 8 is movably mounted on the print sheet mounting base 1. The print sheet mounting base 1 is driven by the stepper motor 7, and the printing paper can pass through the print sheet mounting base 1. When a certain current is applied, it will quickly generate high temperature. When the medium coating encounters the heating element of the thermal print head, the temperature will rise in a very short time, and the medium coating will undergo a chemical reaction;
[0029] Among them, pressing plates 4 are provided on both sides of the top end of the print sheet mounting base 1, a hydraulic cylinder 5 is movably installed inside the pressing plate 4, a protective frame 3 is movably installed at the rear end of the pressing plate 4, a snap bolt 2 penetrates through the mounting position on the protective frame 3, a connecting frame 6 is threadedly connected to the front end of the pressing plate 4, and a rubber roller 9 is movably installed inside the protective frame 3.
[0030] In this embodiment, two pressing plates 4 are movably installed at the top end of the printing sheet mounting base 1. The two pressing plates 4 are hydraulically driven by a hydraulic cylinder 5 and buckled on the printing sheet mounting base 1. The protective frame 3 is threadedly buckled on the rear end of the printing sheet mounting base 1 through a buckle bolt 2, so as to protectively install the rubber roller 9 on the printing sheet mounting base 1, enabling the thermal printing paper to pass through the rubber roller 9 and being driven and conveyed by a stepping motor 7.
[0031] Preferably, the buckle bolt 2 and the protective frame 3 are threadedly buckled to protect the outside of the rubber roller 9. The rubber roller 9 is threadedly disassembled and replaced through the buckle bolt 2. The rubber roller 9 is movably installed at the rear end of the printing sheet mounting base 1 and is driven to rotate by the stepping motor 7 on the printing sheet mounting base 1. When paper jams occur on the rubber roller 9, the user can manually threadedly disassemble the buckle bolt 2 and the protective frame 3 to disassemble and replace the rubber roller 9.
[0032] Preferably, the thermal paper 8 is movably installed inside the pressing plate 4 and the hydraulic cylinder 5 through the printing sheet mounting base 1. When the thermal paper 8 is movably installed on the printing sheet mounting base 1, it is hydraulically driven by the hydraulic cylinder 5, so that the pressing plate 4 is movably installed inside the printing sheet mounting base 1, and the thermal paper 8 and the thermal printing paper on the printing sheet mounting base 1 can be pressed.
[0033] Please refer to Figure 1 and Figure 3 , in this embodiment, the pressing assembly includes a telescopic rod 11 movably installed at the bottom end of the pressing plate 4. The telescopic rod 11 penetrates through the inside of the pressing plate 4 and is movably installed on the hydraulic cylinder 5, and a pressing spring 10 is movably installed outside the telescopic rod 11.
[0034] The telescopic rod 11 passes through the bottom of the pressing plate 4 and is movably installed on the hydraulic cylinder 5. Through the hydraulic drive of the hydraulic cylinder 5, hydraulic lifting and compression are performed, so that the pressing spring 10 is movably installed at the movable part of the telescopic rod 11. The pressing plate 4 and the telescopic rod 11 can be movably installed on the thermal paper 8 and the thermal printing paper under the hydraulic drive of the hydraulic cylinder 5. When a certain current passes through the thermal printing head, high temperature will be generated quickly. When the medium coating encounters the heating element of the thermal printing head, the temperature will rise in a very short time, and the medium coating will undergo a chemical reaction to perform thermal printing.
[0035] Preferably, the pressing spring 10 and the pressing plate 4 are clamped inside the printing sheet mounting base 1 by hydraulic drive of the hydraulic cylinder 5. Under the hydraulic drive of the pressing plate 4 and the telescopic rod 11, the pressing spring 10 is elastically mounted on the thermal paper 8 and the thermal printing paper. After the chemical reaction occurs on the medium coating, thermal printing is carried out. The pressing spring 10 can elastically press on the thermal paper 8 and the thermal printing paper. The pressing plate 4 and the telescopic rod 11 can replace the elastic piece and can drive the pressing spring 10 to squeeze on the thermal paper 8 and the thermal printing paper. When paper jams occur during the thermal printing process, it is not necessary to disassemble the elastic piece on the thermal print head as a whole. The pressing plate 4 and the telescopic rod 11 can be lifted hydraulically, and the thermal print head paper can be removed, reducing the frequency of paper jams. It is not necessary to disassemble the elastic piece every time to clear the paper jam.
[0036] Please refer to Figure 1 and Figure 4 , in this embodiment, the elastic piece assembly includes a thermal print head mounting bracket 12 installed inside the printing sheet mounting base 1, and buckle holes 13 are provided on both sides of the thermal print head mounting bracket 12.
[0037] The thermal print head mounting bracket 12 is installed inside the printing sheet mounting base 1 so that the buckle holes 13 are distributed on the thermal print head mounting bracket 12. The thermal print head mounting bracket 12 can pass through the thermal paper 8 and the thermal printing paper. When a paper jam occurs in the thermal print head, after the pressing plate 4 and the telescopic rod 11 are lifted and lowered by the hydraulic drive of the hydraulic cylinder 5, the thermal print head paper on the thermal print head is removed and cleared, reducing the frequency of paper jams in the thermal print head. The pressing spring 10 can elastically return to its original position, facilitating the normal thermal printing of the thermal print head paper on the thermal print head, and can also reduce the failure rate of the thermal printer.
[0038] Preferably, the telescopic rod 11 can be movably installed inside the thermal print head mounting bracket 12 and the buckle holes 13. The pressing spring 10 and the pressing plate 4 on the telescopic rod 11 press on the thermal paper 8. The pressing plate 4 is movably installed on the thermal print head mounting bracket 12 and the buckle holes 13 through the telescopic rod 11. The pressing spring 10 on the telescopic rod 11 is movably distributed on both sides of the thermal print head mounting bracket 12, and can perform thermal print head processing on the thermal paper 8 and the thermal printing paper.
[0039] As can be seen from the above, the two pressing plates 4 are hydraulically driven by the hydraulic cylinder 5 and buckled on the printing sheet mounting base 1. After the protective frame 3 is threadedly buckled on the rear end of the printing sheet mounting base 1 through the buckle bolt 2, the rubber roller 9 on the printing sheet mounting base 1 can be protected and installed. The thermal printing head mounting bracket 12 can pass through the thermal paper 8 and the thermal printing paper. When the thermal printing head gets jammed, the pressing plate 4 and the telescopic rod 11 are lifted and lowered under the hydraulic drive of the hydraulic cylinder 5, and then the thermal printing paper on the thermal printing head is removed and cleared, reducing the frequency of the thermal printing head getting jammed. The pressing spring 10 can be elastically reset, facilitating the normal thermal printing of the thermal printing paper on the thermal printing head.
[0040] The pressing spring 10 is elastically installed on the thermal paper 8 and the thermal printing paper. After the medium coating undergoes a chemical reaction, thermal printing is carried out. The pressing spring 10 can elastically press on the thermal paper 8 and the thermal printing paper. The pressing plate 4 and the telescopic rod 11 can replace the elastic piece and drive the pressing spring 10 to squeeze on the thermal paper 8 and the thermal printing paper. When the thermal printing process gets jammed, it is not necessary to disassemble the elastic piece on the thermal printing head as a whole.
[0041] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
[0042] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A thermal print head, comprising a print sheet mounting base (1), a stepper motor (7), thermal paper (8) and a mounting assembly, wherein a driving portion on the print sheet mounting base (1) is provided with a stepper motor (7), a mounting portion on the print sheet mounting base (1) is provided with thermal paper (8), and a fixing portion on the mounting assembly is provided with a stepper motor (7) and thermal paper (8), characterized in that: It also includes the following: A pressing assembly mounted on the printing sheet mounting base (1); A spring assembly, arranged on the printing sheet mounting base (1); Wherein, a pressing plate (4) is arranged on both sides of the top of the printing sheet mounting base (1), a hydraulic cylinder (5) is movably mounted inside the pressing plate (4), a protective frame (3) is movably mounted at the rear end of the pressing plate (4), a snap bolt (2) penetrates the mounting position on the protective frame (3), a connecting frame (6) is threadedly connected at the front end of the pressing plate (4), and a rubber roller (9) is movably mounted inside the protective frame (3).
2. A thermal print head according to claim 1, characterized in that: The snap-on bolt (2) and the protective frame (3) are screw-threadedly snap-threadedly protected on the outside of the rubber roller (9), and the rubber roller (9) can be disassembled and replaced via the screw-threads of the snap-on bolt (2).
3. A thermal print head according to claim 1, characterized in that: The thermal paper (8) is movably mounted on the inner side of the pressing plate (4) and the hydraulic cylinder (5) via a printing sheet mounting base (1).
4. A thermal print head according to claim 1, characterized in that: The pressing assembly comprises a telescopic rod (11) movably mounted at the bottom end of a pressing plate (4); the telescopic rod (11) passes through the inside of the pressing plate (4) and is movably mounted on the hydraulic cylinder (5); a pressing spring (10) is movably mounted outside the telescopic rod (11).
5. A thermal print head according to claim 4, characterized in that: The pressing spring (10) and the pressing plate (4) are hydraulically driven by a hydraulic cylinder (5) to be clamped inside the printing sheet mounting base (1).
6. A thermal print head according to claim 1, characterized in that: The spring assembly comprises a thermal print head mounting frame (12) mounted inside a print sheet mounting base (1), and buckle holes (13) are provided on both sides of the thermal print head mounting frame (12).
7. A thermal print head according to claim 6, characterized in that: A telescopic rod (11) is movably mounted inside the thermal print head mounting frame (12) and the buckle hole (13), and a pressing spring (10) and a pressing plate (4) on the telescopic rod (11) press on the thermal paper (8).