Low-cost thermal printing head

Abstract

The utility model relates to the technical field of thermal printing heads, and discloses a low-cost thermal printing head, which comprises a thermal-sensitive mechanism, a PCB mechanism is fixedly connected to the surface of the lower end of one side of the thermal-sensitive mechanism far away from the center, a movable plate mechanism is clamped on the surface of one side of the PCB mechanism, the PCB mechanism comprises a PCB, and the movable plate mechanism is connected with the PCB. The periphery of the outer surface of the PCB is fixedly connected with a heat dissipation coating, the heat dissipation coating comprises a metal oxide layer, the surface of the upper end of the metal oxide layer is fixedly connected with a polymer composite material layer, and the surfaces of the two ends, away from the center, of one side of the PCB are fixedly connected with rectangular insertion blocks; second circular through holes are formed in the surfaces of one sides of the two rectangular insertion blocks. According to the utility model, the PCB and the movable plate main body are arranged in a clamping manner, so that the PCB and the movable plate main body are disassembled and assembled, and in this way, when a certain part on the thermal printing head is damaged, the damaged part can be maintained and replaced in time, thereby reducing the cost.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal print heads, in particular to a low-cost thermal print head. Background Art

[0002] A thermal print head is a device that can generate text, images and barcodes on a thermal printer. Its working principle is to scan thermal paper by heating it, and then the image or barcode can be displayed. The main function of a thermal print head is to record information easily and efficiently to meet various business and personal needs.

[0003] The cost of some existing thermal print heads is relatively high. The main reason is that the components of the entire thermal print head are fixed together. When the thermal print head is damaged, it is inconvenient to disassemble it, and the entire thermal print head needs to be replaced, which ultimately leads to the continuous increase in the cost. In order to avoid wasting other undamaged parts on the thermal print head, a person skilled in the art has provided a low-cost thermal print head to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a low-cost thermal print head. The PCB and the movable plate body are connected in a card-connected manner so that the two can be disassembled and assembled. In this way, when a component on the thermal print head is damaged, the damaged component can be repaired and replaced in time, thereby reducing the cost.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-cost thermal print head, comprising a thermal mechanism, a PCB mechanism is fixedly connected to the lower end surface of one side of the thermal mechanism away from the center, a movable plate mechanism is clamped on the surface of one side of the PCB mechanism, the PCB mechanism comprises a PCB board, a heat dissipation coating is fixedly connected to the outer surface of the PCB board around, the heat dissipation coating comprises a metal oxide layer, a polymer composite material layer is fixedly connected to the upper end surface of the metal oxide layer, a rectangular plug is fixedly connected to the two end surfaces of one side of the PCB board away from the center, and a second circular through hole is opened on one side surface of two rectangular plugs;

[0006] The movable plate mechanism includes a movable plate main body, and fixed blocks are fixedly connected to the two side surfaces of the bottom end of the movable plate main body away from the center, a connecting spring is fixedly connected to the one side surface of the inner wall of the two fixed blocks, a connecting block is fixedly connected to the one side surface of the connecting spring, a connecting rod is fixedly connected to the center of the front side surface of the connecting block, and a cylindrical plug is fixedly connected to the center of the one side surface of the connecting block.

[0007] Through the above technical scheme, by coating the heat dissipation coating on the upper surface of the PCB board, the thermal print head can be cooled when it is working, so as to avoid the thermal print head from generating high temperature due to long-term operation, which eventually leads to the failure of the thermal print head. Moreover, under the action of the thermal conductivity of the metal oxide layer, the heat can be quickly dispersed out of the head. Moreover, under the action of the polymer composite material layer, the high temperature generated by the thermal print head during operation can be further quickly reduced. At the same time, the cost required for the production of the material is relatively low. In this way, the low cost of the thermal print head can be effectively achieved. Moreover, the PCB board and the movable body are arranged in a card connection manner. By toggling the connecting rod, the cylindrical plug block is retracted from the second circular through hole under the action of the connecting spring. In this way, the two can be separated, so that it is convenient to disassemble the thermal print head. In this way, it is convenient to maintain the thermal print head, thereby reducing the cost of the thermal print head.

[0008] Furthermore, the thermal mechanism comprises a substrate, and a label roller is fixedly connected to a surface of one end of the front side of the substrate;

[0009] Through the above technical solution, the main function of the label roller is to allow the entire label to be inserted into it, so as to facilitate subsequent printing by the thermal print head.

[0010] Furthermore, a rubber roller is rotatably arranged on the other end surface of the front side of the substrate;

[0011] Through the above technical solution, the main function of the rubber roller is to stably press the printing medium onto the thermal print head, thereby ensuring that heat effectively flows into the medium, thereby forming text or images.

[0012] Furthermore, a first circular through hole is formed on the front surface of the upper end of the PCB board, and a special-shaped through hole is formed on the rear surface of the upper end of the PCB board;

[0013] Through the above technical solution, the main function of the first circular through hole is to indirectly cool down the entire thermal print head, and the label can pass through the special-shaped through hole.

[0014] Furthermore, a first magnetic attraction layer is fixedly connected to one side surface of the two rectangular plug blocks;

[0015] Through the above technical solution, after the rectangular plug-in block passes through the fixed block under the action of the first magnetic attraction layer, it is magnetically attracted to the magnetic attraction layer inside the fixed block, thereby improving the connection strength between the PCB board and the movable board body.

[0016] Furthermore, a circular groove is provided on the surface of one side of the movable plate body away from the center, and a special-shaped groove is provided at the center of the surface of one side of the movable plate body, and the inner surfaces of the circular groove and the special-shaped groove are fixedly connected with a second magnetic attraction layer;

[0017] Through the above technical scheme, because the surface of one side of the rubber roller is rotatably connected with the base plate during the entire design process, and the movable plate body is also rotatably connected, the role of the circular groove is to allow the other end of the rubber roller to be connected, and the main role of the special-shaped groove is to allow other components on the base plate to be inserted therein, and under the action of the second magnetic attraction layer, the stability of the rubber roller and other components on the base plate after being connected on the surface of the movable plate body can be improved.

[0018] Furthermore, the movable plate body has first slots on both sides of the lower end away from the center, the two fixed blocks have second slots on the rear end, and the two fixed blocks have sliding grooves on the front surfaces;

[0019] Through the above technical solution, the main functions of the first slot and the second slot are to allow the rectangular plug block to be inserted into the fixed block, and under the action of the sliding groove, the connecting rod can be easily displaced.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model proposes a low-cost thermal print head. A rectangular plug-in block fixedly connected to the two side surfaces of a PCB board away from the center is inserted into a fixed block inside a movable plate body under the action of a first slot and a second slot. Then, under the cooperation of a connecting spring and a connecting block, a circular plug-in block is inserted into a second circular through hole. In this way, the PCB board and the movable plate body are fixed together. At the same time, this method is convenient for disassembly and assembly of the two, so as to facilitate maintenance of the thermal print head. In this way, the thermal print head can be disassembled and assembled during use, so as to facilitate maintenance. Therefore, the cost of the thermal print head is reduced, and it is avoided that the thermal print head is damaged and inconvenient to maintain, so that the entire thermal print head needs to be replaced, which increases the cost.

[0022] 2. The utility model proposes a low-cost thermal print head, which has a heat dissipation coating on the surface of the PCB board. The heat generated by the thermal print head when working can be quickly dispersed due to the thermal conductivity of the metal oxide layer in the heat dissipation coating. The high temperature generated by the thermal print head when working can be further dispersed under the action of the polymer composite material layer, thereby reducing the temperature. At the same time, the cost of the material is relatively low, which can indirectly reduce the cost of the thermal print head. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the axle side of the utility model;

[0024] Figure 2 This is a diagram showing the axial side of the PCB board proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of the heat dissipation coating structure proposed by the utility model;

[0026] Figure 4 This is a schematic diagram of the axial side of the movable plate proposed by the utility model;

[0027] Figure 5 This is a schematic diagram of the internal structure of location A proposed by the utility model.

[0028] Legend:

[0029] 1. Thermosensitive mechanism; 101. Base plate; 102. Label roller; 103. Rubber roller; 2. PCB mechanism; 201. PCB board; 202. First circular through hole; 203. Special-shaped through hole; 204. Rectangular plug-in block; 205. Second circular through hole; 206. First magnetic layer; 207. Heat dissipation coating; 20701. Metal oxide layer; 20702. Polymer composite material layer; 3. Movable plate mechanism; 301. Movable plate body; 302. Circular groove; 303. Second magnetic layer; 304. Special-shaped groove; 305. First slot; 306. Fixed block; 307. Slide groove; 308. Connecting rod; 309. Cylindrical plug-in block; 310. Connecting spring; 311. Connecting block; 312. Second slot. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1-5 The utility model provides an embodiment: a low-cost thermal print head, including a thermal mechanism 1, a PCB mechanism 2 is fixedly connected to the lower end surface of one side of the thermal mechanism 1 away from the center, and a movable plate mechanism 3 is clamped on the surface of one side of the PCB mechanism 2.

[0032] The problem can be reduced when the thermal mechanism 1 is working under the action of the PCB mechanism 2, and the PCB mechanism 2 and the movable plate mechanism 3 can be easily disassembled and assembled, so that the entire thermal print head can be maintained.

[0033] Reference Figure 1 The thermal mechanism 1 includes a substrate 101 , a label roller 102 is fixedly connected to a front end surface of the substrate 101 , and a rubber roller 103 is rotatably provided on the other front end surface of the substrate 101 .

[0034] The main function of the label roller 102 is to allow the label to be inserted therein. Under the action of the rubber roller 103, the printing medium can be stably pressed against the thermal print head, thereby ensuring that heat flows into the medium and finally forms text or images.

[0035] Reference Figure 1-3 The PCB mechanism 2 includes a PCB board 201, and heat dissipation coatings 207 are fixedly connected to the outer surface of the PCB board 201 all around, and the heat dissipation coating 207 includes a metal oxide layer 20701, and a polymer composite material layer 20702 is fixedly connected to the upper end surface of the metal oxide layer 20701. Rectangular plugs 204 are fixedly connected to the surfaces of both ends away from the center of one side of the PCB board 201, and a second circular through hole 205 is opened on one side surface of the two rectangular plugs 204, a first circular through hole 202 is opened on the front side surface of the upper end of the PCB board 201, and a special-shaped through hole 203 is opened on the rear side surface of the upper end of the PCB board 201, and a first magnetic attraction layer 206 is fixedly connected to the surface of one side of the two rectangular plugs 204.

[0036] The heat dissipation coating 207 can be used to dissipate heat and cool the entire thermal print head, and the metal oxide layer 20701 can quickly disperse the heat generated by the thermal print head during operation due to its thermal conductivity, and the polymer composite material can further disperse the high temperature generated by the operation of the thermal print head to reduce the temperature, and the rectangular plug-in block 204 and the second circular through hole 205 can cooperate with the fixed block 306 to clamp the movable plate body 301 and the PCB together.

[0037] Reference Figure 4-5The movable plate mechanism 3 includes a movable plate body 301, and both sides of the bottom end of the movable plate body 301 are fixedly connected with fixed blocks 306 on the surfaces of both sides away from the center, a connecting spring 310 is fixedly connected to the surface of one side of the inner wall of the two fixed blocks 306, a connecting block 311 is fixedly connected to the surface of one side of the connecting spring 310, a connecting rod 308 is fixedly connected to the center of the front side surface of the connecting block 311, and a cylindrical plug block 309 is fixedly connected to the center of the surface of one side of the connecting block 311, a circular groove 302 is opened on the surface of one side of the movable plate body 301 away from the center, a special-shaped groove 304 is opened at the center of the surface of one side of the movable plate body 301, and a second magnetic attraction layer 303 is fixedly connected to the inner surfaces of the circular groove 302 and the special-shaped groove 304, and a first slot 305 is opened on both sides of the lower end of the movable plate body 301 away from the center, a second slot 312 is opened on the surface of one end of the rear side of the two fixed blocks 306, and a slide groove 307 is opened on the front side surface of the two fixed blocks 306.

[0038] By means of the connecting spring 310 and the connecting block 311 inside the fixed block 306, the cylindrical plug block 309 can be passed through the second circular through hole 205 of the rectangular plug block 204. In this way, the PCB board 201 and the movable plate body 301 can be clamped together. The main function of the circular groove 302 is to allow one side of the rubber roller 103 to be clamped therein, and under the action of the slide groove 307, it is convenient for the connecting rod 308 to slide on the surface of the fixed block 306.

[0039] Working principle: When the entire thermal print head needs to be disassembled and maintained, the connecting rod 308 is pushed, so that the cylindrical plug 309 is moved away from the first circular through hole 202 on one side of the rectangular plug 204 under the action of the connecting spring 310 and the connecting block 311. In this way, the PCB board 201 is separated from the movable plate body 301, and then the rubber roller 103 is taken out from one side of the substrate 101 for maintenance. The high temperature generated by the thermal mechanism 1 when working is dissipated through the heat dissipation coating 207 in the PCB board 201, and the heat generated by the thermal mechanism 1 is quickly reduced under the action of the metal oxide layer 20701 and the polymer composite material layer 20702.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-cost thermal print head, comprising a thermal mechanism (1), characterized in that: A PCB mechanism (2) is fixedly connected to the lower end surface of one side of the thermosensitive mechanism (1) away from the center, a movable plate mechanism (3) is clamped on the surface of one side of the PCB mechanism (2), the PCB mechanism (2) comprises a PCB board (201), a heat dissipation coating (207) is fixedly connected to the outer surface of the PCB board (201) on all sides, the heat dissipation coating (207) comprises a metal oxide layer (20701), a polymer composite material layer (20702) is fixedly connected to the upper end surface of the metal oxide layer (20701), and rectangular plugs (204) are fixedly connected to the two end surfaces of one side of the PCB board (201) away from the center, and second circular through holes (205) are provided on the surfaces of one side of the two rectangular plugs (204); The movable plate mechanism (3) comprises a movable plate body (301), the inner bottom end of the movable plate body (301) is fixedly connected to both side surfaces away from the center with fixed blocks (306), one side surface of the inner wall of the two fixed blocks (306) is fixedly connected to a connecting spring (310), one side surface of the connecting spring (310) is fixedly connected to a connecting block (311), the center of the front side surface of the connecting block (311) is fixedly connected to a connecting rod (308), and the center of one side surface of the connecting block (311) is fixedly connected to a cylindrical plug block (309).

2. A low-cost thermal print head according to claim 1, characterized in that: The thermosensitive mechanism (1) comprises a base plate (101), and a label roller (102) is fixedly connected to a front end surface of the base plate (101).

3. A low-cost thermal print head according to claim 2, characterized in that: A rubber roller (103) is rotatably arranged on the other end surface of the front side of the substrate (101).

4. A low-cost thermal print head according to claim 1, characterized in that: A first circular through hole (202) is provided on the front surface of the upper end of the PCB board (201), and a special-shaped through hole (203) is provided on the rear surface of the upper end of the PCB board (201).

5. A low-cost thermal print head according to claim 1, characterized in that: A first magnetic attraction layer (206) is fixedly connected to one side surface of the two rectangular plug blocks (204).

6. A low-cost thermal print head according to claim 1, characterized in that: A circular groove (302) is provided on the surface of one side of the movable plate body (301) away from the center, and a special-shaped groove (304) is provided at the center of the surface of one side of the movable plate body (301). The inner surfaces of the circular groove (302) and the special-shaped groove (304) are both fixedly connected with a second magnetic attraction layer (303).

7. A low-cost thermal print head according to claim 1, characterized in that: The movable plate body (301) is provided with first slots (305) on both sides of the lower end away from the center, the rear end surface of the two fixed blocks (306) is provided with second slots (312), and the front surface of the two fixed blocks (306) is provided with sliding grooves (307).

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