Thermal printer with simply assembled thermosensitive sheet

Abstract

The thermal printer comprises a base, a cover body, a rubber roller and a machine core, the installation side wall of the machine core is provided with a matching groove, a sliding groove, a limiting block and a cylindrical block, a rotating groove is formed between the limiting block and the cylindrical block, and a sliding block of a thermosensitive module is in sliding fit with the sliding groove. The elastic piece abuts between the mounting bottom wall and the thermosensitive module, the side edge, in the paper width direction, of the thermosensitive module is located in the rotating groove, and the arc peripheral wall of the cylindrical block is in sliding fit with the side edge; the axial end of the rubber roller is located in the matching groove, the rubber roller is opposite to the thermosensitive module, and the cylindrical block is closer to the matching groove relative to the limiting block. The cylindrical block is arranged on the mounting side wall, then the side edge of the thermosensitive module is located in the rotating groove, the thermosensitive module can rotate around the cylindrical block by means of sliding fit between the circular arc peripheral wall of the cylindrical block and the side edge, then the thermosensitive module is simply and conveniently assembled and positioned by means of a simple structure, and cost control and reduction are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of thermal printing, in particular to a thermal printer for simply assembling a thermal sheet. Background Art

[0002] With the popularization and application of thermal printers, they are widely used in the warehousing and logistics industries. Thermal printers include thermal transfer printers using the carbon ribbon thermal transfer principle and thermal printers using thermal paper thermal imaging. After thermal printing and imaging, the printed paper is output outward for users to use.

[0003] Generally, a thermal printer is provided with a base, a cover, a rubber roller and a thermal sheet. The printed paper enters the position between the rubber roller and the thermal sheet, and through the heating of the thermal sheet, the imaging of images and texts is realized. Regarding the relative position stability between the thermal sheet and the rubber roller, it directly affects the printing stability and printing quality. Therefore, how to simply assemble and position the thermal sheet is particularly important.

[0004] In the prior art, the general solution is that the upper end of the thermal sheet is pressed by a sliding groove and a spring to maintain the clamping force between the thermal sheet and the rubber roller, while the lower end of the thermal sheet generally adopts a pin shaft assembly method, and then the thermal sheet is rotatably arranged on the base. Since such a pin shaft method is not only complex in assembly, but also not conducive to cost control and reduction. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a thermal printer for simply assembling a thermal sheet.

[0006] To achieve the purpose of the utility model, the utility model provides a thermal printer for simply assembling a thermal sheet, which includes a base, a cover, a rubber roller and a movement mechanism. The base is provided with a paper bin, the cover is hinged to the base and covers above the paper bin, the rubber roller is arranged on the cover, and a paper outlet is formed between the cover and the base; the movement mechanism includes a seat body, an elastic member and a thermal module. The seat body is provided with an installation bottom wall extending along the paper width direction. At both ends of the installation bottom wall in the paper width direction, installation side walls are respectively provided. The installation bottom wall and the installation side walls on both sides enclose an installation groove. Each installation side wall is provided with a cooperation groove, a sliding groove, a limiting block and a cylindrical block. The cooperation groove and the sliding groove are located on the side close to the paper outlet, and the limiting block and the cylindrical block are located on the side far from the paper outlet. A rotation groove is formed between the limiting block and the cylindrical block; the thermal module extends along the paper width direction and is respectively provided with sliders at both ends in the paper width direction. The thermal module is arranged in the installation groove, the sliders are slidably matched with the sliding grooves, the elastic member abuts between the installation bottom wall and the thermal module, the side edge of the thermal module in the paper width direction is located in the rotation groove, and the arc-shaped peripheral wall of the cylindrical block is slidably matched with the side edge; the axial end of the rubber roller is located in the cooperation groove, the rubber roller is opposite to the thermal module, and the cylindrical block is closer to the cooperation groove than the limiting block.

[0007] A further solution is that an installation end face is provided at the upper end of the installation bottom wall, a cutting blade is fixedly provided on the installation end face, and a cutting edge is provided at the paper outlet of the cutting blade.

[0008] A further solution is that the installation bottom wall is provided with a positioning groove, the elastic member is a spring, the spring is located in the positioning groove and abuts between the installation bottom wall and the thermal module, the positioning groove has an opening at the upper part, and the cutting blade covers the opening.

[0009] A further solution is that the thermal module includes a thermal support and a thermal sheet respectively extending along the paper width direction. Sliders are respectively provided at both ends of the thermal support in the paper width direction, and the thermal sheet is provided on the thermal support and faces the rubber roller.

[0010] A further solution is that the movement mechanism includes a locking hook, the locking hook is rotatably provided on the seat body, hook parts are provided at the mating grooves at both ends of the locking hook, and the hook parts are detachably engaged with the axial ends of the rubber roller.

[0011] A further solution is that the sliding groove is provided with a receiving wall at the lower side, a stop wall is provided at the side close to the rubber roller of the sliding groove, the slider is adjacent to the receiving wall and the stop wall, and the rotating groove runs through in the vertical direction.

[0012] The beneficial effects of the present utility model are as follows: the upper end of the thermal module is limited by the cooperation of the sliding groove and the slider, and the rubber roller can be kept pressed by cooperating with the elastic member. Moreover, by providing a cylindrical block on the installation side wall, the side edge of the thermal module is located in the rotating groove, and the arc-shaped peripheral wall of the cylindrical block is slidably matched with the side edge, so that the thermal module can rotate around the cylindrical block, and then the simple assembly and positioning of the thermal module are realized by a simple structure, and it is also beneficial to cost control and reduction. And, through the setting of the cutting blade, it is convenient to cut and separate the printing paper and stably assemble and position the spring. And, by the cooperation of the bearing wall and the slider and the through setting of the rotating groove, the assembly redundancy can be improved, and the assembly convenience is further improved. Description of the Drawings

[0013] Figure 1 It is a structural diagram of an embodiment of the thermal printer of the present utility model.

[0014] Figure 2 It is a structural diagram of the embodiment of the thermal printer of the present utility model after the cover body is opened.

[0015] Figure 3 It is another structural diagram of the embodiment of the thermal printer of the present utility model after the cover body is opened.

[0016] Figure 4 It is a structural diagram of the movement mechanism in the embodiment of the thermal printer of the present utility model.

[0017] Figure 5It is an exploded view of the movement in an embodiment of the thermal printer of the present utility model.

[0018] Figure 6 It is a cross-sectional view of the movement in an embodiment of the thermal printer of the present utility model.

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. Specific embodiments

[0020] Refer to Figures 1 to 6 , the thermal printer includes a base 12, a cover 11, a rubber roller 111 and a movement 2. The base 12 is provided with a paper bin 121. The cover 11 is hinged to the base 12 and covers above the paper bin 121. The rubber roller 111 is arranged on the cover 11. An outlet 13 is formed between the cover 11 and the base 12, and the outlet 13 is arranged upward.

[0021] The movement 2 includes a seat body 22, an elastic member, a locking hook 23 and a thermal module 21. The seat body 22 is provided with an installation bottom wall 221 extending along the paper width direction Y. Installation side walls 222 are respectively arranged at both ends of the installation bottom wall 221 in the paper width direction Y. The installation bottom wall 221 and the installation side walls 222 on both sides enclose an installation groove 223. Each installation side wall 222 is provided with a mating groove 225, a sliding groove 24, a limiting block 243 and a cylindrical block 244. The mating groove 225 and the sliding groove 24 are located on the side close to the outlet 13. The mating groove 225 is provided with an opening upward, and the opening is used for the axial end 112 of the rubber roller 111 to be inserted. The limiting block 243 and the cylindrical block 244 are located on the side far from the outlet 13. The limiting block 243 is arranged in a strip shape, and a rotation groove 245 is formed between the limiting block 243 and the cylindrical block 244.

[0022] The thermal module 21 includes a thermal support 211 and a thermal sheet 212 respectively extending along the paper width direction Y. Sliders 213 are respectively arranged at both ends of the thermal support 211 in the paper width direction Y. The thermal sheet 212 is arranged on the thermal support 211 and is opposite to the rubber roller 111. The thermal module 21 is arranged in the installation groove 223, and the sliders 213 are slidably matched with the sliding grooves 24. The sliding groove 24 is provided with a receiving wall 241 at the lower side, and a stop wall 242 is arranged on the side of the sliding groove 24 close to the rubber roller 111. The sliders 213 are adjacent to the receiving wall 241 and the stop wall 242, and the rotation groove 245 runs through in the vertical direction.

[0023] The installation bottom wall 221 is provided with a positioning groove 224. The elastic member (not shown) is a spring 26. The spring 26 is located in the positioning groove 224 and abuts between the installation bottom wall 221 and the thermal module 21. The positioning groove 224 has an opening at the upper part. The upper end of the installation bottom wall 221 is provided with an installation end face 226. A cutting blade 25 is fixedly arranged on the installation end face 226. The cutting blade 25 is provided with a cutting edge at the paper outlet 13. The cutting blade 25 covers the opening. The locking hook 23 is rotatably arranged on the seat body 22. The locking hook 23 is provided with a hook portion 231 at the fitting groove 225 at each end. The hook portion 231 is detachably engaged with the axial end 112 of the rubber roller 111. The side edge of the thermal module 21 in the paper width direction Y is located in the rotation groove 245. The arc-shaped circumferential wall of the cylindrical block 244 is slidably matched with the side edge of the thermal module 21. The axial end of the rubber roller 111 is located in the fitting groove 225. The rubber roller 111 faces the thermal module 21. The cylindrical block 244 is closer to the fitting groove 225 than the limiting block 243.

[0024] Since the thermal sheet 212 elastically abuts against the rubber roller 111, the upper end of the thermal bracket 211 then moves along the sliding groove 24, and the side edge of the lower end of the thermal bracket 211 can rotate around the cylindrical block 244, thus keeping the thermal sheet 212 in close fit with the rubber roller 111.

[0025] As can be seen from the above, the upper end of the thermal module is limited by the cooperation of the sliding groove and the slider, and the elastic member can be used to press the rubber roller. Moreover, by arranging the cylindrical block on the installation side wall, the side edge of the thermal module is located in the rotation groove, and the arc-shaped circumferential wall of the cylindrical block is slidably matched with the side edge, so that the thermal module can rotate around the cylindrical block, thus realizing the simple assembly and positioning of the thermal module with a simple structure, and also facilitating the control and reduction of costs. And, through the setting of the cutting blade, it is convenient to cut and separate the printing paper and to stably assemble and position the spring. Also, by using the cooperation of the bearing wall and the slider and the through setting of the rotation groove, the assembly redundancy can be increased, which further improves the assembly convenience.

Claims

1. A thermal printer for simply assembling a thermal sheet, comprising a base, a cover, a rubber roller and a movement. The base is provided with a paper bin. The cover is hinged to the base and covers above the paper bin. The rubber roller is arranged on the cover, and a paper outlet is formed between the cover and the base. It is characterized in that: The movement includes a seat body, an elastic member and a thermal module. The seat body is provided with a mounting bottom wall extending along the paper width direction. Mounting side walls are respectively arranged at two ends of the mounting bottom wall in the paper width direction. The mounting bottom wall and the two side mounting side walls enclose a mounting groove. Each side mounting side wall is provided with a fitting groove, a sliding groove, a limiting block and a cylindrical block. The fitting groove and the sliding groove are located on the side close to the paper outlet, and the limiting block and the cylindrical block are located on the side far from the paper outlet. A rotating groove is formed between the limiting block and the cylindrical block. The thermal module extends along the paper width direction and is respectively provided with sliders at two ends in the paper width direction. The thermal module is arranged in the mounting groove. The sliders are slidably matched with the sliding grooves. The elastic member abuts between the mounting bottom wall and the thermal module. The side edge of the thermal module in the paper width direction is located in the rotating groove, and the arc circumferential wall of the cylindrical block is slidably matched with the side edge. The axial end of the rubber roller is located in the fitting groove. The rubber roller is opposite to the thermal module. The cylindrical block is closer to the fitting groove than the limiting block.

2. The thermal printer according to claim 1, characterized in that: The upper end of the mounting bottom wall is provided with a mounting end face. A cutting blade is fixedly arranged on the mounting end face. The cutting blade is provided with a blade part at the paper outlet.

3. The thermal printer according to claim 2, characterized in that: The mounting bottom wall is provided with a positioning groove. The elastic member is a spring. The spring is located in the positioning groove and abuts between the mounting bottom wall and the thermal module. The positioning groove has an opening at the upper part, and the cutting blade covers the opening.

4. The thermal printer according to claim 1, characterized in that: The thermal module includes a thermal bracket and a thermal sheet respectively extending along the paper width direction. The thermal bracket is respectively provided with the sliders at two ends in the paper width direction. The thermal sheet is arranged on the thermal bracket and is opposite to the rubber roller.

5. The thermal printer according to claim 1, characterized in that: The movement includes a locking hook. The locking hook is rotatably arranged on the seat body. The locking hook is provided with a hook part at each end of the fitting groove. The hook part is detachably engaged with the axial end of the rubber roller.

6. The thermal printer according to any one of claims 1 to 5, characterized in that: The sliding groove is provided with a receiving wall at the lower side. The sliding groove is provided with a blocking wall on the side close to the rubber roller. The slider is adjacent to the receiving wall and the blocking wall. The rotating groove runs through in the vertical direction.

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