Thermal printer with conveniently assembled thermal sensitive sheet

Abstract

The thermal printer comprises a base, a cover body, a rubber roller, a thermal module and a cover plate, the thermal module comprises an installation support and the thermal piece, the thermal piece is arranged on the installation support, the installation support is provided with a front positioning block and a rear positioning block, and the front positioning block and the rear positioning block are arranged on the cover plate. The mounting groove of the cover body is provided with a front clamping groove, a front through groove, a rear clamping groove and a rear through groove, the front positioning block is mounted from the front inlet and passes through the front through groove to be mounted on the front bearing bottom surface, the rear positioning block is mounted from the rear inlet and passes through the rear through groove to be mounted on the rear bearing bottom surface, buckles are arranged on the two sides of the cover plate in the paper width direction, and the mounting support and the cover plate cover the mounting groove. And the buckle is positioned at the rear through groove and is clamped with the rear through groove. The front positioning block is installed from the front inlet and is installed on the front bearing bottom face through the front through groove, the rear positioning block is installed from the rear inlet and is installed on the rear bearing bottom face through the rear through groove, and then the installation support can be conveniently and stably assembled in the installation groove in cooperation with covering of the cover plate.

Description

Technical Field

[0001] The utility model relates to the field of thermal printers, in particular to a thermal printer with a convenient assembly of thermal sheets. Background Art

[0002] With the popularization of thermal printers, they are not only used in bank ATMs, supermarket checkout counters, e-commerce delivery offices, catering shops, etc., but also in the e-commerce and express delivery industries, where printing is growing rapidly and there are higher requirements for the stability and ease of operation of the printers.

[0003] Thermal printers are generally equipped with a base, a cover, a rubber roller and a thermal film. The printing paper enters the position between the rubber roller and the thermal film, and the thermal film is heated to form the image and text. Therefore, the relative position stability of the thermal film and the rubber roller directly affects the printing stability and print quality. The assembly positioning of the thermal film also affects the assembly efficiency. Therefore, how to conveniently assemble and position the thermal film is particularly important. Utility Model Content

[0004] The utility model aims to provide a thermal printer with convenient assembly of thermal sheets.

[0005] In order to achieve the purpose of the present invention, the present invention provides a thermal printer with convenient assembly of thermal sheets, comprising a base, a cover, a rubber roller and a thermal module, the base is provided with a paper bin, the cover is hinged to the base and covers the paper bin, a paper outlet is formed between the cover and the base, the thermal module is arranged on the cover, the rubber roller is arranged on the base, the thermal module and the rubber roller are opposite to each other and form a paper feed channel, the paper feed channel is connected between the paper outlet and the paper bin, the paper outlet is located at the front side of the paper feed channel, the paper bin is located at the rear side of the paper feed channel, the thermal module comprises a mounting bracket and a thermal sheet, the thermal sheet is arranged on the mounting bracket along the paper width direction, the mounting bracket is provided with a front positioning block and a rear positioning block on each side in the paper width direction, the front positioning block is located at the rear positioning block based on the front side of the paper feed channel, the cover is provided with a mounting groove, the mounting groove is provided with mounting side walls on both sides in the paper width direction, and each side is installed The side wall is provided with a front card slot, a front through-groove, a rear card slot and a rear through-groove, which are arranged in sequence from front to back. The front card slot is provided with a front bearing bottom surface, the lower end of the front through-groove is provided with a front entrance, the upper end of the front through-groove is connected with the front bearing bottom surface, the rear card slot is provided with a rear bearing bottom surface, the lower end of the rear through-groove is provided with a rear entrance, the upper end of the rear through-groove is connected with the rear bearing bottom surface, the front positioning block is loaded from the front entrance and installed to the front bearing bottom surface through the front through-groove, the rear positioning block is loaded from the rear entrance and installed to the rear bearing bottom surface through the rear through-groove, the thermal printer also includes a cover plate and a spring, the spring is provided in the mounting groove and elastically abuts against the mounting bracket, the spring applies an elastic force toward the rubber roller to the thermal film, the cover plate is provided with buckles on both sides in the paper width direction, the mounting bracket and the cover plate cover the mounting slot, the buckle is located at the rear through-groove and engages with the rear through-groove.

[0006] A further solution is that the front card slot is arranged as a U-shaped slot, the front bearing bottom surface is located at the bottom of the U-shaped slot, and the U-shaped slot is provided with first limiting walls on both sides of the front bearing bottom surface.

[0007] A further solution is that the rear slot is arranged in an L-shaped slot, and a second limiting wall is arranged on the front side of the L-shaped slot.

[0008] A further solution is that a stop block is provided between the rear clamping slot and the front through slot.

[0009] A further solution is that the front positioning block is arranged in a cylindrical shape, and the axial direction of the cylinder is parallel to the paper width direction.

[0010] A further solution is that the rear positioning block is provided as a flat block, and the plane of the flat block is adjacent to the rear bearing bottom surface.

[0011] A further solution is that the thermal printer further includes a paper detection module, which is arranged on the cover plate and detects toward the paper feeding channel.

[0012] A further solution is that the thermal module also includes a cable connected to the thermal sheet, the cable extends along the rear side and extends into the cover body, and the cover is provided with an extension baffle facing forward, the extension baffle is located on the bottom side to shield the cable.

[0013] The beneficial effects of the present invention are that the front positioning block is inserted from the front entrance and installed to the front bearing bottom surface through the front through-slot, and the rear positioning block is inserted from the rear entrance and installed to the rear bearing bottom surface through the rear through-slot, and then the cover plate is closed, so that the mounting bracket can be conveniently and stably assembled in the mounting slot. The spring is used to abut the mounting bracket and apply elastic force to the thermal sheet, thereby improving the stability between the thermal sheet and the rubber roller. The U-shaped groove can be used to assemble and position the cylinder, and the L-shaped groove is used to abut the flat surface of the flat block. When assembling the mounting bracket, the front positioning block can be installed first, and then the rear positioning block, making assembly more convenient and positioning more accurate. The extended baffle is used to shield the cable and protect the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of an embodiment of the thermal printer of the present utility model.

[0015] Figure 2 This is a structural diagram of an embodiment of the thermal printer of the present invention after the cover is opened.

[0016] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0017] Figure 4 This is an exploded view of the cover of the thermal printer embodiment of the present invention.

[0018] Figure 5 It is a structural diagram of the front and rear positioning blocks of an embodiment of the thermal printer of the present utility model.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 5 The thermal printer includes a base 1, a cover 2, a rubber roller 11, a thermal module 3 and a paper detection module 333. The base 1 is provided with a paper bin 12. The cover 2 is hinged to the base 1 and covers the paper bin 12. A paper outlet 10 is formed between the cover 2 and the base 1. The thermal module 3 is arranged on the cover 2, and the rubber roller 11 is arranged on the base 1. The thermal module 3 and the rubber roller 11 are opposite to each other and form a paper feeding channel. The paper feeding channel extends along the paper length direction X. The paper feeding channel is connected between the paper outlet 10 and the paper bin 12. The paper outlet 10 is located on the front side of the paper feeding channel, and the paper bin 12 is located on the rear side of the paper feeding channel.

[0021] The thermal module 3 includes a mounting bracket 32, a thermal sheet 31, and a cable 311. The thermal sheet 31 is mounted on the mounting bracket 32 ​​along the paper width direction Y, facing the rubber roller 11. A front positioning block 321 and a rear positioning block 322 are provided on each side of the mounting bracket 32 ​​in the paper width direction Y. The front positioning block 321 is located in front of the rear positioning block 322, relative to the paper path. The front positioning block 321 is cylindrical, with the axis parallel to the paper width direction Y. The rear positioning block 322 is a flat block with a flat surface at its lower end. The cable 311 is connected to the thermal sheet 31 and extends along the rear side and into the cover 2. The mounting bracket 32 ​​also has a U-shaped positioning groove 323 on each side in the paper width direction Y. The positioning groove 323 is designed to mate with the axial end of the rubber roller 11.

[0022] The cover body 2 is provided with a mounting groove 21, and the mounting groove 21 is located above the rubber roller 11. The mounting groove 21 is provided with mounting side walls on both sides of the paper width direction Y, and each side mounting side wall is provided with a front card slot 22, a front through-groove 23, a rear card slot 24 and a rear through-groove 25. The front card slot 22, the front through-groove 23, the rear card slot 24 and the rear through-groove 25 are arranged in sequence from front to back based on the paper length direction X. The front card slot 22 is provided with a front bearing bottom surface, and the front card slot 22 is provided with a U-shaped groove. The front bearing bottom surface is located at the bottom of the U-shaped groove. The U-shaped groove is provided with a first limiting wall on the front and rear sides of the front bearing bottom surface, and the lower end of the front through-groove 23 is provided with a front entrance, and the upper end of the front through-groove 23 is connected to the front bearing bottom surface. The rear card slot 24 is set in an L-shaped slot, and the rear card slot 24 is provided with a rear bearing bottom surface. The front side of the L-shaped slot is provided with a second limiting wall. A stop block 27 is provided between the rear card slot 24 and the front through slot 23. The lower end of the rear through slot 25 is provided with a rear entrance, and the upper end of the rear through slot 25 is connected to the rear bearing bottom surface.

[0023] The thermal printer also includes a cover plate 33 and two springs 26. A front positioning block 321 is inserted from the front entrance and mounted to the front support bottom surface through the front through-slot 23. The spring 26 is located within the mounting slot 21 and elastically abuts the mounting bracket 32, applying an elastic force to the thermal film 31 toward the rubber roller 11. A rear positioning block 322 is inserted from the rear entrance and mounted to the rear support bottom surface through the rear through-slot 25. The flat surface of the flat block at its lower end abuts the rear support bottom surface. The cover plate 33 is provided with latches 331 on both sides in the paper width direction Y. The mounting bracket 32 ​​and the cover plate 33 cover the mounting slot 21. The latches 331 are located in the rear through-slot 25 and engage with the rear through-slot 25. An extended baffle 334 is provided forward of the cover plate 33. The extended baffle 334 is located on the bottom side to shield the cable 311. A paper detection module 333 is provided on the cover plate 33 and detects the position of the printing paper by sensing the paper path.

[0024] As can be seen from the above, the front positioning block is loaded from the front entrance and installed to the front load-bearing bottom surface through the front through-groove, and the rear positioning block is loaded from the rear entrance and installed to the rear load-bearing bottom surface through the rear through-groove, and then the cover plate is closed, so that the mounting bracket can be conveniently and stably assembled in the mounting groove, and the spring is used to abut the mounting bracket and apply elastic force to the thermal sheet, thereby improving the stability between the thermal sheet and the rubber roller.

Claims

1. A thermal printer with a convenient assembly of thermal sheets, comprising a base, a cover, a rubber roller, and a thermal module, the base being provided with a paper bin, the cover being hingedly connected to the base and covering the paper bin, a paper outlet being formed between the cover and the base, the thermal module being disposed on the cover, the rubber roller being disposed on the base, the thermal module and the rubber roller being opposed to each other and forming a paper feed path, the paper feed path being connected between the paper outlet and the paper bin, the paper outlet being located in front of the paper feed path, and the paper bin being located in the rear of the paper feed path; Its characteristics are: The thermal module includes a mounting bracket and a thermal sheet, the thermal sheet is arranged on the mounting bracket along the paper width direction, and the mounting bracket is provided with a front positioning block and a rear positioning block on each side of the paper width direction, the front positioning block is located in front of the rear positioning block based on the paper feeding path; The cover body is provided with a mounting slot, and the mounting slot is provided with mounting side walls on both sides of the paper width direction, and the mounting side walls on each side are provided with a front card slot, a front through-slot, a rear card slot and a rear through-slot, and the front card slot, the front through-slot, the rear card slot and the rear through-slot are arranged in sequence from front to back, the front card slot is provided with a front bearing bottom surface, the lower end of the front through-slot is provided with a front entrance, and the upper end of the front through-slot is communicated with the front bearing bottom surface, the rear card slot is provided with a rear bearing bottom surface, the lower end of the rear through-slot is provided with a rear entrance, and the upper end of the rear through-slot is communicated with the rear bearing bottom surface; The front positioning block is loaded from the front entrance and installed on the front bearing bottom surface through the front through-groove, and the rear positioning block is loaded from the rear entrance and installed on the rear bearing bottom surface through the rear through-groove; The thermal printer also includes a cover plate and a spring. The spring is arranged in the mounting groove and elastically abuts against the mounting bracket. The spring applies an elastic force to the thermal sheet toward the rubber roller. The cover plate is provided with buckles on both sides of the paper width direction. The mounting bracket and the cover plate cover the mounting groove. The buckle is located at the rear through-groove and engages with the rear through-groove.

2. The thermal printer according to claim 1, wherein: The front card slot is arranged in a U-shaped slot, the front bearing bottom surface is located at the bottom of the U-shaped slot, and the U-shaped slot is provided with first limiting walls on both sides of the front and rear sides of the front bearing bottom surface.

3. The thermal printer according to claim 1, wherein: The rear slot is arranged in an L-shaped slot, and a second limiting wall is arranged on the front side of the L-shaped slot.

4. The thermal printer according to claim 1, wherein: A stop block is provided between the rear clamping slot and the front through slot.

5. The thermal printer according to claim 1, wherein: The front positioning block is arranged in a cylindrical shape, and the axial direction of the cylinder is parallel to the paper width direction.

6. The thermal printer according to claim 1, wherein: The rear positioning block is provided as a flat block, and the plane of the flat block is adjacent to the rear bearing bottom surface.

7. The thermal printer according to claim 1, wherein: The thermal printer further includes a paper detection module, which is disposed on the cover plate and detects toward the paper feeding channel.

8. The thermal printer according to any one of claims 1 to 7, wherein: The thermal module further includes a cable connected to the thermal sheet. The cable extends along the rear side and extends into the cover. The cover is provided with an extension baffle facing forward. The extension baffle is located at the bottom side to shield the cable.

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