Automatic surface paper and backing paper stripping mechanism applied to thermal printer

Abstract

The utility model provides an automatic surface paper and backing paper stripping mechanism applied to a thermal printer, which comprises a paper feeding channel, a paper outlet, a stripping channel, a backing paper outlet, a printing rubber roller, a paper stripping baffle and a stripping rubber roller, one end of the stripping channel is connected with the connection position of the paper feeding channel and the paper outlet, and the backing paper outlet is arranged at the other end of the stripping channel; the printing rubber roller is rotationally arranged at the connecting position of the paper feeding channel, the paper outlet and the stripping channel. The paper stripping baffle is arranged between the printing rubber roller and the paper outlet, a paper outlet space and a backing paper recycling space are formed on the upper side and the lower side of the paper stripping baffle respectively, and a stripping position is formed on one side of the paper stripping baffle. According to the utility model, the stripping rubber roller is matched with the printing rubber roller to drive the backing paper of the printing paper, so that the printing paper is stably separated along the stripping position of the paper stripping baffle plate, and compared with the existing manual separation mode, the paper stripping mechanism is more efficient and convenient, and the printing efficiency is improved. And the processing efficiency of the label printing paper is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of thermal printers, and in particular to an automatic paper and backing paper peeling mechanism for thermal printers. Background Technology

[0002] In existing label printing processes, after the labels are printed, users typically need to manually separate them from their release paper for subsequent applications. While this method of printing first and then manually separating can meet certain usage needs, its limitations become increasingly apparent as the scope of applications expands and efficiency requirements increase.

[0003] First, this method significantly reduces work efficiency. After each printing, manual intervention is required to separate the label from the release paper, which not only increases operation time but also limits the speed when processing a large number of labels.

[0004] Secondly, the manual separation process is complex and inconvenient, especially in situations where labels need to be processed frequently. This can easily lead to operational inconvenience and errors, further affecting the ease of use and overall efficiency.

[0005] In view of this, the inventor has specifically designed an automatic peeling mechanism for the face paper and back paper of a thermal printer, which leads to this invention. Utility Model Content

[0006] To solve the above problems, the technical solution of this utility model is as follows:

[0007] An automatic paper and backing paper peeling mechanism for a thermal printer includes a paper feed path, a paper outlet, a peeling path, a backing paper outlet, a printing roller, a paper peeling baffle, and a peeling roller, wherein:

[0008] One end of the peeling channel is connected to the connection position between the paper feeding channel and the paper outlet, and the bottom paper outlet is located at the other end of the peeling channel;

[0009] The printing roller is rotatably positioned at the connection point of the paper feed channel, the paper outlet, and the peeling channel, and is used to cooperate with the print head for printing and to drive the printing paper.

[0010] The paper peeling baffle is located between the printing roller and the paper outlet, and forms a paper outlet space and a bottom paper recycling space on its upper and lower sides respectively. The side of the paper peeling baffle closest to the paper outlet forms a peeling position.

[0011] The peeling roller is rotatably disposed within the peeling channel and movably contacts the printing roller, and is used to separate the bottom paper and the top paper of the printing paper as the printing roller rotates.

[0012] Preferably, it also includes a paper guide cover, which is disposed at the upper end of the paper peeling baffle, and the paper guide cover and the paper peeling baffle enclose a paper outlet space.

[0013] Preferably, the paper guide cover includes a plurality of upper paper guide sheets that are distributed parallel to each other along the axis perpendicular to the printing roller.

[0014] Preferably, the upper guide sheet forms an arc-shaped guide surface on one side near the paper feeding channel, and the arc-shaped portion of the guide surface protrudes toward the direction of the rubber roller.

[0015] Preferably, the peeling channel is located below the paper feeding channel, including an upper mounting space for accommodating the printing roller and the peeling roller, and a lower paper feeding space for feeding the bottom paper. The distance between the two sides of the mounting space gradually decreases towards the paper feeding space.

[0016] Preferably, the sidewall of the peeling channel away from the bottom paper outlet forms an inclined guide arc surface, which protrudes in a direction away from the peeling roller.

[0017] Preferably, it also includes a control cover plate rotatably disposed at the bottom in front of the peeling channel, the inner side of the control cover plate enclosing the lower support of the printer to form the peeling channel, the upper side of the control cover plate enclosing the upper support of the printer to form the paper outlet, and the lower side of the control cover plate enclosing the housing of the printer to form the bottom paper outlet.

[0018] Preferably, the control cover is provided with an elastic bracket on the inner side, and the peeling roller is hinged to the elastic bracket to elastically press against the surface of the printing roller.

[0019] Preferably, the top of the control cover is provided with a paper guide cover, which is composed of several lower paper guide pieces distributed in parallel intervals along the axis perpendicular to the printing roller, and the top surface of the lower paper guide pieces is inclined downward along the paper outlet toward the peeling channel.

[0020] Preferably, the paper feed path is formed by the upper support and lower support of the printer.

[0021] The beneficial effects of this utility model are as follows:

[0022] In this invention, after the printing paper passes through the thermal print head and the printing roller, under the guidance of the paper peeling baffle, the release liner is pulled downward toward the peeling channel by the rolling friction between the peeling roller and the printing roller, while the paper surface maintains its original paper feeding direction and is discharged from the paper outlet, thus realizing the automatic peeling of the release liner and the paper surface.

[0023] The paper guide cover guides the printing paper, ensuring that it is stably guided out of the paper path, paper output space, and paper output port.

[0024] The peeling channel, with its inclined guide arc surface and gradually decreasing spacing towards the paper feeding space, can smoothly guide the peeled backing paper, allowing it to be stably discharged along the backing paper outlet.

[0025] By controlling the cover plate in conjunction with the printer housing, the peeling channel can be easily opened and closed. This allows for the initial pre-peeling of the printing paper's base layer, guiding it into the peeling channel. By engaging the control cover plate, the peeling roller, hinged to the cover plate, presses the pre-peeled base layer between the peeling roller and the printing roller, facilitating the initial printing process. This structure also allows for easy access to the paper output position, facilitating maintenance and parts replacement.

[0026] In summary, this invention uses a peeling roller in conjunction with a printing roller to drive the bottom paper of the printing paper, enabling the printing paper to be stably separated along the peeling position of the paper peeling baffle. Compared with the existing manual separation method, this is more efficient and convenient, greatly improving the processing efficiency of label printing paper. Attached Figure Description

[0027] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0028] in:

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the usage state of this utility model;

[0031] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0032] Figure 4 yes Figure 3 A magnified schematic diagram of a portion of region A in the middle;

[0033] Figure 5 This is a partial exploded view of the paper guide cover in this utility model;

[0034] Figure 6 This is a schematic diagram of the partially exploded structure of this utility model;

[0035] Figure 7 This is a partial exploded view of the control cover plate in this utility model;

[0036] Figure 8 This is a partial structural diagram highlighting the control cover plate in this utility model.

[0037] Label Explanation:

[0038] 100. Housing; 110. Lower support; 120. Upper support; 130. Paper tray; 140. Paper feed path; 141. Paper output space; 142. Bottom paper recycling space; 150. Paper output port; 160. Peeling channel; 161. Installation space; 162. Paper feed space; 163. Guide arc surface; 170. Bottom paper outlet; 180. Paper guide cover; 181. Upper paper guide plate; 182. Guide surface; 190. Pivot hole; 200. Printing roller; 300. Peeling roller; 310. Shaft; 400. Paper peeling baffle; 410. Peeling position; 420. Snap-fit ​​edge; 500. Printing... Header plate; 600, Printing paper; 610, Face paper; 620, Bottom paper; 700, Control cover plate; 710, Paper guide front cover; 711, Paper output surface; 712, Snap-fit ​​part; 713, Blade surface; 714, Pivot part; 720, Paper guide rear cover; 730, Bolt; 740, Paper guide lower cover; 741, Lower paper guide piece; 750, First pivot protrusion; 760, Second pivot protrusion; 770, Support plane; 800, Elastic bracket; 810, Bracket body; 820, Support spring; 830, First limiting groove; 840, Second limiting groove; 850, Pivot edge; 851, Pivot groove. Detailed Implementation

[0039] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0040] Please see Figures 1 to 8 This is a preferred embodiment of the present invention, which is an automatic paper and backing paper peeling mechanism for a thermal printer. It includes a paper feed path 140, a paper outlet 150, a peeling path 160, a backing paper outlet 170, a printing roller 200, a paper peeling baffle 400, and a peeling roller 300, as detailed below:

[0041] like Figure 2 , 3As shown in Figure 4, the printer includes a housing 100, a lower bracket 110, and an upper bracket 120. When the lower bracket 110 and the upper bracket 120 are assembled, they form a continuously distributed paper tray 130, a paper feed channel 140, and a paper output port 150 within the housing 100. The printer's thermal printhead 500 is mounted on the upper bracket 120 and located between the paper feed channel 140 and the paper output port 150. The printing roller 200 is correspondingly mounted at the connection position between the paper feed channel 140 and the paper output port 150 and is positioned opposite to the thermal printhead 500. The printing roller 200 (not shown in the figure) is driven by a corresponding motor to drive the printing paper 600 and cooperate with the thermal print head 500 to print the paper 610 of the printing paper 600. The printing paper 600 is composed of thermal print head 610 and release paper backing 620. It is normally rolled up and placed inside the paper tray 130. Its end is led out along the paper tray 130, passes through the paper feeding channel 140 in sequence, and is finally discharged along the paper outlet 150 under the driving cooperation of the printing roller 200 and the print head 500, thus realizing the entire printing process.

[0042] like Figure 4 As shown, the peeling channel 160 is located on the lower side of the printhead plate 500. Its upper inlet is connected to the connection position of the paper feed channel 140 and the paper outlet 150. The other end of the peeling channel 160 extends downward at an angle to form a bottom paper outlet 170 on the side wall of the printer housing 100.

[0043] Specifically, the printing roller 200 is rotatably positioned at the connection point of the paper feed channel 140, the paper outlet 150, and the peeling channel 160, located below the thermal print head 500, and is used to cooperate with the print head 500 to achieve printing and drive the paper 600 to feed.

[0044] like Figure 4 As shown, in order to accommodate the installation of the printing roller 200 and the peeling roller 300, the peeling channel 160 is located below the paper feeding channel 140, including an installation space 161 located on the upper side for accommodating the printing roller 200 and the peeling roller 300, and a paper feeding space 162 located on the lower side for feeding the bottom paper 620. The distance between the two sides of the installation space 161 gradually decreases towards the paper feeding space 162, and the bottom paper outlet 170 is connected to the end of the paper feeding space 162.

[0045] In this embodiment, the sidewall of the peeling channel 160 away from the bottom paper outlet 170 forms an inclined guide arc surface 163, which protrudes in a direction away from the peeling roller 300.

[0046] Thus, by designing the shape of the peeling channel 160 to form an inclined shape that is larger at the top and smaller at the bottom, the larger installation space 161 on the upper side is used to accommodate the corresponding printing roller 200 and peeling roller 300 and other related structures, while forming a space for the bottom paper 620 of the printing paper 600 to pass smoothly through. The lower side is correspondingly formed with an inclined paper feeding space 162 with a guide arc surface 163. With the gradually decreasing paper feeding space 162, the bottom paper 620 of the printing paper 600 is stably guided and finally smoothly discharged along the bottom paper outlet 170, which is convenient for users to collect and dispose of in a unified manner.

[0047] like Figure 4 , 5 As shown, the paper peeling baffle 400 is disposed between the printing roller 200 and the paper outlet 150, and forms a paper outlet space 141 and a bottom paper recycling space 142 on its upper and lower sides respectively. A peeling position 410 is formed on the side of the paper peeling baffle 400 near the paper outlet 150.

[0048] In this embodiment, the paper peeling baffle 400 is a long sheet, parallel to the printing roller 200 and fixed to the front side of the printing roller 200 through the side walls on both sides of the paper feeding channel 140. On the side of the paper peeling baffle 400 near the paper outlet 150, a peeling position 410 for peeling the face paper 610 and the back paper 620 of the printing paper 600 is formed accordingly.

[0049] Among them, such as Figure 4 , 5 As shown, it also includes a paper guide cover 180, which is fixed to the lower side of the upper support 120 and located directly above the paper peeling baffle 400. The paper guide cover 180 and the paper peeling baffle 400 enclose the aforementioned paper output space 141.

[0050] To facilitate the guidance of the printing paper 600, the paper guide cover 180 is designed to consist of several upper paper guide pieces 181 that are parallel and spaced apart along the axis of the printing roller. The upper paper guide pieces 181 form an arc-shaped guide surface 182 on the side near the paper feeding channel 140. The arc-shaped part of the guide surface 182 protrudes towards the printing roller. Thus, on the side of the paper guide cover 180 near the printing roller 200, a channel that gradually narrows and has a guide arc surface 163 and a guide paper output space 141 is formed. When the printing paper 600 moves towards the paper output space 141 and the paper output port 150 under the drive of the printing roller 200, it will be stably guided to the paper output space 141 under the guidance of the overall guide arc surface 163 formed by the several upper paper guide pieces 181, and finally stably exported along the paper output port 150.

[0051] In addition, such as Figure 4As shown, the paper peeling baffle 400 is inclinedly arranged in the paper feeding channel 140, with its higher side located near the paper outlet 150. Thus, it can cooperate with the paper guide cover 180 to form a gradually narrowing channel, which facilitates the guidance of the printing paper 600.

[0052] Combination Figure 5 The paper peeling baffle 400 has two protruding ends along its length to form snap-fit ​​edges 420, which are snapped onto the walls on both sides of the paper feeding channel 140, thereby achieving the installation and fixation of the paper peeling baffle 400.

[0053] like Figure 4 As shown, the peeling roller 300 is rotatably disposed within the peeling channel 160 and movably contacts the printing roller 200, and is used to drive the bottom paper 620 and the top paper 610 of the printing paper 600 to separate as the printing roller 200 rotates.

[0054] Specifically, such as Figure 6 , 7 As shown in Figure 8, in order to install the peeling roller 300, a control cover plate 700 is also included, which is rotatably located at the bottom in front of the peeling channel 160. The inner side of the control cover plate 700 and the lower bracket 110 of the printer form the peeling channel 160. The upper side of the control cover plate 700 and the upper bracket 120 of the printer form the paper outlet 150. The lower side of the control cover plate 700 and the housing 100 of the printer form the bottom paper outlet 170.

[0055] In this embodiment, an opening (not shown in the figure) is formed on the front side of the printer housing 100. The inner wall of the paper feed space 162 of the peeling channel 160 (i.e., the outer wall of the printer lower bracket 110) extends downward along the inner side of the opening and finally connects to the front wall of the housing 100. This allows the opening to communicate with the inner wall of the paper feed channel 140, the printing roller 200, and the peeling channel 160 inside the printer. The bottom of the control cover 700 is pivotally connected to the bottom of the opening, and a gap is left between the bottom of the control cover 700 and the bottom of the opening, through which a communication with the peeling channel 160 is formed. The upper end of the control cover 700 is snapped and fixed to the upper side of the opening at the bottom paper outlet 170. There is another gap between the upper end of the control cover 700 and the upper side of the opening, through which the paper outlet 150 is formed. The inner wall of the control cover 700 and the inclined outer wall of the lower support 110 form a peeling channel 160. Thus, by opening or closing the control cover 700 by pivoting the control cover 700, the peeling channel 160 and the paper outlet 150 can be opened or closed, which facilitates the corresponding operation of the face paper 610 and the bottom paper 620 of the printing paper 600.

[0056] like Figure 7 , 8As shown, the control cover 700 includes a paper guide front cover 710 located outside the printer and a paper guide rear cover 720 located inside the peeling channel 160.

[0057] The upper side of the paper guide front cover 710 forms a flat paper output surface 711. The two sides of the paper output surface 711 extend vertically upward to form two snap-fit ​​parts 712 for engaging with the opening of the printer housing 100. The snap-fit ​​parts 712, the paper output surface 711, and the top wall of the opening enclose the aforementioned paper output port 150. The front side of the paper output surface 711 can form a blade surface 713 composed of several strip grids spaced apart, which facilitates the direct tearing of the printing paper 600 by the blade surface 713 in the mode of direct paper output. The bottom two sides of the paper guide front cover 710 protrude to form pivot parts 714. The pivot parts 714 are hinged to the pivot holes 190 at the bottom of the side walls on both sides of the opening of the printer housing 100, thereby realizing the flipping and fixing of the paper guide front cover 710 at the opening position of the printer housing 100.

[0058] The paper guide rear cover 720 is locked and fixed to the inner side of the paper guide front cover 710 by bolts 730. Its middle portion protrudes away from the paper guide front cover 710, thus engaging with the outer wall of the lower bracket 110 to form the peeling channel 160, which is wider at the top and narrower at the bottom. Furthermore, a paper guide lower cover 740 is provided at the top of the paper guide rear cover 720. The paper guide lower cover 740 is composed of several lower paper guide pieces 741 arranged parallel to each other along a direction perpendicular to the axis of the rubber roller. The lower paper guide pieces 741 extend upwards along the inner wall of the paper guide rear cover 720 near the bottom, protruding beyond its top surface. The top surfaces of several lower paper guide pieces 741 form a flat, level surface (not shown in the figure). After the paper guide rear cover 720 is locked and fixed to the paper guide front cover 710, the top of the lower paper guide pieces 741 is higher than the paper output surface 711. The paper peeling baffle 400 is fixed to the upper side of the flat surface. The paper guide upper cover 180 is fixed to the top wall of the opening of the printer housing 100 and is located above the paper peeling baffle 400. Thus, a paper output space 141 is formed between the paper peeling baffle 400 and the paper guide upper cover 180, and a bottom paper recycling space 142 is formed between the paper peeling baffle 400 and the flat surface.

[0059] The paper peeling baffle 400 is designed in the aforementioned position, which allows for easy operation of the paper peeling baffle 400 after opening the control cover 700. This position also serves as the separation position for the face paper 610 and the back paper 620 of the printing paper 600. It also allows the user to operate the face paper 610 and the back paper 620 of the printing paper 600. The back paper 620 can be peeled off separately and put into the peeling channel 160 to realize the automatic mode of automatic peeling of face paper 610 and back paper 620. Alternatively, the entire printing paper 600 can be directly led out to the paper outlet 150 to realize the direct output mode of printing paper 600.

[0060] Specifically, a pair of elastic supports 800 are symmetrically provided on both sides of the inner wall of the paper guide cover 720, and the peeling roller 300 is hinged between the two elastic supports 800 to be elastically pressed against the surface of the printing roller 200.

[0061] Specifically, the elastic support 800 includes a support body 810 and a support spring 820. A first limiting groove 830 and a second limiting groove 840 are formed parallel to each other along the axial direction of the peeling roller 300 on the support body 810. Both the first limiting groove 830 and the second limiting groove 840 are waist-shaped grooves and extend along the height direction of the support body 810. The second limiting groove 840 is located on the side away from the paper guide back cover 720 and its highest position is higher than the first limiting groove 830. The two side walls of the paper guide back cover 720 are respectively provided with a first pivoting protrusion 750 and a second pivoting protrusion 760 that slide with the first limiting groove 830 and the second lower limiting groove. The height of the second pivoting protrusion 760 is higher than that of the first pivoting protrusion 750, so that the support body 810 forms a slightly inclined state on both sides of the paper guide back cover 720.

[0062] The top of the support body 810 and the side away from the paper guide cover 720 extends obliquely upward to form a pivot edge 850. A pivot groove 851 with an opening is formed on the pivot edge 850. The rotating shafts 310 at both ends of the peeling roller 300 are respectively snapped into the pivot groove 851, thereby enabling the peeling roller 300 to be rotated between the two support bodies 810.

[0063] The bottom of the support body 810 is provided with spring grooves (not shown in the figure) distributed along its height direction. The support spring 820 is limited and fixed in the spring groove, and its bottom extends beyond the spring groove. The bottom of the paper guide cover 720 is located below the spring groove to form a support plane 770. The bottom of the support spring 820 is in contact with the support plane 770. Thus, under the action of the support spring 820, the support body 810 moves to the farthest position away from the support plane 770 under normal conditions. At this time, the first pivot protrusion 750 and the second pivot protrusion 760 are located at the first On the lower side of the limiting groove 830 and the second limiting groove 840, during the process of the control cover 700 flipping and fastening, the surface of the peeling roller 300 contacts the surface of the printing roller 200. Under the pressure of the printing roller 200, the support body 810 moves towards the support plane 770 under the limiting guidance of the first pivot protrusion 750 and the second pivot protrusion 760. The support spring 820 is compressed and deformed. When the control cover 700 is fully fastened, the elastic force of the support spring 820 makes the peeling roller 300 elastically pressed against the surface of the printing roller 200.

[0064] Thus, the elastic support 800 enables elastic contact between the peeling roller 300 and the printing roller 200, facilitating the opening and closing of the control cover 700 and pressing the bottom paper 620 of the printing paper 600, making it stable and convenient to press between the printing roller 200 and the peeling roller 300.

[0065] The beneficial effects of this utility model are as follows:

[0066] In this invention, after the printing paper 600 passes through the thermal print head 500 and the printing roller 200, under the guidance of the paper peeling baffle 400, the release paper 620 is pulled downward toward the peeling channel 160 by the frictional force of the rolling between the peeling roller 300 and the printing roller 200, while the face paper 610 of the printing paper 600 maintains its original paper feeding direction and is discharged from the paper outlet 150, thereby realizing the automatic peeling of the release paper 620 and the face paper 610.

[0067] The paper guide cover 180 guides the printing paper 600 so that it can be stably guided out along the paper path 140, the paper output space 141 and the paper output port 150.

[0068] The peeling channel 160, which has an inclined guide arc surface 163 and a gradually decreasing spacing towards the paper feeding space 162, can smoothly guide the peeled backing paper 620 and stably export it along the backing paper outlet 170.

[0069] By controlling the cover plate 700 in conjunction with the printer housing 100, the peeling channel 160 can be easily opened and closed. This allows for the pre-peeling of the base paper 620 of the printing paper 600 in the initial stage, enabling it to enter the peeling channel 160. By engaging the control cover plate 700, the peeling roller 300, hinged to the control cover plate 700, presses the pre-peeled base paper 620 between the peeling roller 300 and the printing roller 200, facilitating the initial printing operation. This structure also allows for easy opening of the paper output position, facilitating maintenance and parts replacement.

[0070] In summary, this utility model uses the peeling roller 300 in conjunction with the printing roller 200 to drive the bottom paper 620 of the printing paper 600, so that the printing paper 600 is stably separated along the peeling position 410 of the paper peeling baffle 400. Compared with the existing manual separation method, it is more efficient and convenient, and greatly improves the processing efficiency of the label printing paper 600.

[0071] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. An automatic paper and backing paper peeling mechanism for thermal printers, characterized in that, This includes a paper feed path (140), a paper exit (150), a peeling path (160), a bottom paper exit (170), a printing roller (200), a paper peeling baffle (400), and a peeling roller (300), wherein: One end of the peeling channel (160) is connected to the connection position between the paper feeding channel (140) and the paper outlet (150), and the bottom paper outlet (170) is located at the other end of the peeling channel (160); The printing roller (200) is rotatably positioned at the connection point of the paper feed channel (140), the paper outlet (150), and the peeling channel (160) to cooperate with the print head (500) for printing and driving the printing paper (600). The paper peeling baffle (400) is located between the printing roller (200) and the paper outlet (150) and forms a paper outlet space (141) and a bottom paper recycling space (142) on its upper and lower sides respectively. The paper peeling baffle (400) forms a peeling position (410) on the side close to the paper outlet (150). The peeling roller (300) is rotatably disposed in the peeling channel (160) and actively contacts the printing roller (200), and is used to separate the bottom paper (620) and the top paper (610) of the printing paper (600) as the printing roller (200) rotates.

2. The automatic peeling mechanism for the top paper and the bottom paper applied to the thermal printer according to claim 1, characterized in that, It also includes a paper guide cover (180), which is located on the upper end of the paper peeling baffle (400), and the paper guide cover (180) and the paper peeling baffle (400) enclose a paper outlet space (141).

3. The automatic peeling mechanism for the top paper and the bottom paper applied to the thermal printer according to claim 2, characterized in that, The paper guide cover (180) includes a plurality of upper paper guide sheets (181) that are distributed in parallel and spaced apart along the axis perpendicular to the printing roller (200).

4. The automatic peeling mechanism for the top paper and the bottom paper applied to the thermal printer according to claim 3, characterized in that, The upper guide sheet (181) forms an arc-shaped guide surface (182) on one side near the paper feeding channel (140), and the arc-shaped part of the guide surface (182) protrudes toward the direction of the rubber roller.

5. The automatic peeling mechanism for the top and bottom paper of a thermal printer according to claim 1, wherein The peeling channel (160) is located below the paper feeding channel (140) and includes an upper mounting space (161) for accommodating the printing roller (200) and the peeling roller (300) and a lower paper feeding space (162) for feeding the bottom paper (620). The distance between the two sides of the mounting space (161) gradually decreases toward the paper feeding space (162).

6. The automatic peeling mechanism for the top and bottom paper of a thermal printer according to claim 5, wherein The peeling channel (160) has an inclined guide arc surface (163) on the side wall away from the bottom paper outlet (170), and the guide arc surface (163) protrudes in a direction away from the peeling roller (300).

7. The automatic peeling mechanism for the top and bottom paper of a thermal printer according to claim 1, wherein It also includes a control cover (700) that is rotatably located at the bottom in front of the peeling channel (160). The inner side of the control cover (700) and the lower bracket (110) of the printer form the peeling channel (160). The upper side of the control cover (700) and the upper bracket (120) of the printer form the paper outlet (150). The lower side of the control cover (700) and the housing (100) of the printer form the bottom paper outlet (170).

8. The automatic peeling mechanism for the top and bottom paper of a thermal printer according to claim 7, wherein The control cover plate (700) is provided with an elastic bracket (800) on the inner side, and the peeling roller (300) is hinged to the elastic bracket (800) to be elastically pressed against the surface of the printing roller (200).

9. The automatic peeling mechanism for the top and bottom paper of a thermal printer according to claim 7, wherein The control cover (700) is provided with a paper guide cover (740) at the top. The paper guide cover (740) is composed of several lower paper guide pieces (741) that are distributed in parallel intervals along the axis perpendicular to the printing roller (200). The top surface of the lower paper guide pieces (741) is inclined downward along the paper outlet (150) toward the peeling channel (160).

10. The automatic peeling mechanism for the top and bottom paper of a thermal printer according to claim 1, wherein The paper feed path (140) is formed by the upper support (120) and lower support (110) of the printer.

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