Label printer

Abstract

The embodiment of the utility model discloses a label printer which comprises a machine body, a paper bin, a printing head and a cover body, the machine body is provided with a plurality of side walls, and a mounting cavity is defined by the side walls; the paper bin is mounted in the mounting cavity, and the paper bin is used for accommodating a printing paper roll; the printing head is arranged on the machine body; the cover body is movably connected to the machine body so as to open or cover the paper bin; in the thickness direction of the machine body, the height of the side wall, away from the printing head, of the machine body is smaller than the height of the highest position of the printing paper roll in the full paper state. In the thickness direction of the machine body, the height of the side wall, far away from the printing head, of the machine body is lower than the height of the highest position of the printing paper roll in the full paper state, the printing paper roll can be exposed to a large extent due to the fact that the height of the side wall is relatively low, a user can conveniently take the printing paper roll, and the operation difficulty is reduced.

Description

Technical Field

[0001] This application relates to the field of printer technology, and more particularly to a label printer. Background Technology

[0002] Label printers are used to print labels on label rolls. When using them, the label roll needs to be placed into the paper tray of the label printer first. Sometimes, the label roll gets stuck or needs to be replaced temporarily. Users need to remove the label roll from the printer. Due to the limitations of the paper tray, it can be inconvenient to remove the label roll. Utility Model Content

[0003] This application provides a label printer that exposes more of the printing paper roll by making the edge of the paper tray opening lower than the printing paper roll, thus facilitating the user's loading and unloading of the label printer.

[0004] In a first aspect, embodiments of this application provide a label printer, which includes a body, a paper tray, a print head, and a cover. The body has multiple side walls that enclose a mounting cavity. The paper tray is installed in the mounting cavity and is used to hold a roll of printing paper. The print head is disposed on the body. The cover is movably connected to the body to open or close the paper tray. In this case, along the thickness direction of the body, the height of the side wall of the body away from the print head is lower than the height of the highest point of the roll of printing paper when it is full.

[0005] In some exemplary embodiments, the label printer further includes a first clamping plate disposed within the paper tray, the first clamping plate having a support member for supporting the printing paper roll, the highest point of the support member being higher than the height of the side wall of the machine body away from the print head along the thickness direction of the machine body.

[0006] In some exemplary embodiments, the sidewall of the body away from the printhead has a first surface, the first surface being perpendicular to the thickness direction of the body, and the height difference between the highest point of the support and the first surface in the thickness direction of the body is 5-15 mm.

[0007] In some exemplary embodiments, the support is rotatably mounted on the first clamping cardboard, and the outline of the support is cylindrical. When the support rotates, the highest point of the support remains unchanged.

[0008] In some exemplary embodiments, the printing paper roll is disposed at the end of the paper tray away from the print head.

[0009] In some example embodiments, the label printer further comprises a first paper clamping plate arranged in the paper bin, the first paper clamping plate being provided with a support for supporting the print paper roll, the support being arranged apart from the side wall of the body away from the print head.

[0010] In some example embodiments, the side wall of the body away from the print head has a second surface, the second surface being arranged towards the print paper roll, a gap distance between the support and the second surface being 8-20 mm.

[0011] In some example embodiments, the side wall of the body away from the print head is concave in a direction away from the print paper roll to form a recess.

[0012] In some example embodiments, the label printer further comprises a first paper clamping plate arranged in the paper bin, the first paper clamping plate being provided with a support for supporting the print paper roll, an inner wall surface of the paper bin comprising a paper feeding surface, along a thickness direction of the body, a highest point of the support being higher than a highest point of the paper feeding surface.

[0013] In some example embodiments, the paper feeding surface is an arc surface.

[0014] In some example embodiments, a side of the paper feeding surface close to an end of the print paper roll is lower than a side of the paper feeding surface away from the end of the print paper roll.

[0015] In some example embodiments, an inner wall surface of the paper bin comprises a paper feeding surface, the paper feeding surface being closer to the print head than the print paper roll, and the print paper roll being arranged apart from the paper feeding surface.

[0016] In some example embodiments, the cover comprises a rotating end hinged to the body and a free end away from the rotating end, when the cover is fully opened, a projection of the free end of the cover on a preset plane is arranged apart from a projection of the paper bin on the preset plane, the preset plane being perpendicular to a thickness direction of the body.

[0017] In some example embodiments, the cover comprises a straight section and an arc section connected to the straight section, when the cover is closed on the paper bin, the arc section surrounds an outer periphery of the print paper roll, the side wall of the body away from the print head corresponding to an end of the arc section away from the straight section.

[0018] In some example embodiments, the label printer further comprises a first paper clamping plate, a second paper clamping plate and a linkage assembly, the printing paper roll is clamped between the first paper clamping plate and the second paper clamping plate, the first paper clamping plate and the second paper clamping plate are connected with the linkage assembly, the first paper clamping plate and the second paper clamping plate are linked through the linkage assembly, and the movement directions of the first paper clamping plate and the second paper clamping plate are opposite.

[0019] In some example embodiments, the linkage assembly comprises a gear and oppositely arranged first and second racks, the gear is engaged with the first and second racks at the same time, the first and second racks are both slidingly arranged on the body, and the movement directions of the first and second racks are opposite, the first and second paper clamping plates are connected with the first and second racks respectively.

[0020] Beneficial effects: along the thickness direction of the body, the height of the side wall away from the print head is lower than the height of the highest point of the printing paper roll in the full paper state, because the height of the side wall is relatively low, the printing paper roll can be exposed to a relatively high degree, thereby facilitating the user to take the printing paper roll and reducing the operation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] Figure 1 The structural schematic diagram of the label printer in an embodiment of the present application;

[0023] Figure 2 The structural schematic diagram of the label printer in another embodiment of the present application;

[0024] Figure 3 The partial hierarchical structure schematic diagram of the label printer in an embodiment of the present application;

[0025] Figure 4 The partial exploded structure schematic diagram of the label printer in another embodiment of the present application;

[0026] Figure 5 The partial exploded structure schematic diagram of the label printer in another embodiment of the present application;

[0027] Figure 6 The partial exploded structure schematic diagram of the label printer in another embodiment of the present application;

[0028] Figure 7 Fig. 1 is a schematic view of a label printer according to an embodiment of the present application.

[0029] 100, label printer; 110, body; 110a, mounting cavity; 110b, avoiding part; 110c, paper feeding surface; 111, side wall; 111a, first surface; 111b, second surface; 120, paper bin; 130, print head; 140, cover; 141, rotating end; 142, free end; 143, straight segment; 144, arc segment; 150, print paper roll; 160, first paper clamping plate; 161, support; 170, second paper clamping plate; 180, linkage assembly; 181, first gear rack; 182, second gear rack; 183, gear. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0032] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0033] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In addition, the technical solutions in the various embodiments of the present application can be combined with each other, but it must be based on the implementation by the ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0035] As shown in Figures 1-4 The first aspect of the embodiments of the present application provides a label printer 100, which comprises a body 110, a paper bin 120, a print head 130 and a cover 140.

[0036] The body 110 has a plurality of side walls 111, and the plurality of side walls 111 enclose a mounting cavity 110a. The material of the body 110 is exemplarily plastic, so that the body 110 is light in texture, low in cost, low in processing difficulty, capable of being injection molded into various complex shapes, and capable of playing an insulating effect.

[0037] The paper bin 120 is mounted in the mounting cavity 110a, and the paper bin 120 is used to accommodate a print paper roll 150. Optionally, the shape of the mounting cavity 110a is substantially the same as the shape of the paper bin 120, so that the structure of the body 110 is relatively small and compact.

[0038] The print head 130 is arranged on the body 110, and the print head 130 is used to print on the print paper. It can be understood that the print paper roll 150 is unwound towards the print head 130 to facilitate the print head 130 to print.

[0039] The cover 140 is movably connected to the body 110 to open or cover the paper bin 120. For example, the cover 140 can be rotationally arranged on the body 110, or slidingly arranged on the body 110. When the cover 140 is opened, the print paper roll 150 can be taken out from the paper bin 120, or the print paper roll 150 can be put into the paper bin 120. When the cover 140 is closed, the paper bin 120 is closed, so as to avoid sundries from falling into the paper bin 120.

[0040] In the thickness direction of the body 110, the height of the side wall 111 of the body 110 away from the print head 130 is lower than the height of the highest part of the print paper roll 150 in the full paper state. Since the height of the side wall 111 is relatively low, the degree of exposure of the print paper roll 150 is relatively high, so as to facilitate the user to take the print paper roll 150 and reduce the operation difficulty.

[0041] As shown in Figure 4As shown, in some embodiments, the label printer 100 also includes a first clamping plate 160 disposed within the paper tray 120. The first clamping plate 160 can firmly fix the printing paper roll 150, preventing the printing paper roll 150 from loosening or shifting during printing, ensuring smooth paper feeding, and reducing the risk of printing misalignment or paper jams. By firmly fixing the printing paper roll 150, the first clamping plate 160 ensures that the paper remains stable during printing, helping to guide the printing paper roll 150 into the printing area along the correct path, avoiding paper twisting or folding, ensuring a smooth printing process, thereby improving printing accuracy and quality. Furthermore, the stable paper roll fixing method can reduce printing errors caused by paper shifting or loosening, reducing waste of the printing paper roll 150. In addition, the first clamping plate 160 can also reduce the shaking and friction of the printing paper roll 150, reducing equipment wear, enhancing the overall stability of the printer, reducing vibration and noise during operation, improving the user experience, and extending the printer's service life.

[0042] Optionally, the first paper clip 160 is designed to be adjustable to accommodate various paper roll widths 150, enhancing the device's versatility and meeting diverse printing needs. The first paper clip 160 makes the installation and replacement of the paper roll 150 more convenient, reducing operational steps and improving the user experience.

[0043] The first clamping plate 160 is provided with a support member 161 for supporting the printing paper roll 150. The first clamping plate 160 can firmly fix the printing paper roll 150, prevent the printing paper roll 150 from shifting or sliding during the printing process, and ensure the accurate alignment of the printed content.

[0044] Along the thickness direction of the body 110, the highest point of the support member 161 is higher than the height of the side wall 111 of the body 110 away from the print head 130. When the printing paper roll 150 is placed on the support member 161, the printing paper roll 150 is supported by the support member 161. The height of the highest point of the printing paper roll 150 is always higher than the height of the side wall 111 of the print head 130, so that a relatively large part of the printing paper roll 150 can be exposed, making it convenient for users to pick up and put away the printing paper roll 150.

[0045] like Figure 5 As shown, in some embodiments, the sidewall 111 of the body 110 away from the printhead 130 has a first surface 111a, which is perpendicular to the thickness direction of the body 110. The height difference H1 between the highest point of the support member 161 and the first surface 111a in the thickness direction of the body 110 is 5-15 mm. Optionally, H1 is 5 mm, 7 mm, 10 mm, 12 mm, 13 mm, 14 mm, 15 mm, etc. Optionally, the first surface 111a is the highest surface of this side in the thickness direction of the body 110.

[0046] If H1 is less than 5mm, it is inconvenient to take out the printed paper roll, and if H1 is greater than 15mm, it will cause the accommodating cavity to be too large, thereby increasing the volume of the entire label printer 100.

[0047] As shown in Figure 4 some embodiments, the support 161 is rotatably arranged on the first paper clamping plate 160, and the profile shape of the support 161 is cylindrical. When the support 161 rotates, the highest part of the support 161 does not change, so that when the support 161 rotates to any position, the highest part of the printing paper roll 150 is always higher than the height of the side wall 111 of the body 110 away from the print head 130. Since the inner cylinder of the printing paper roll 150 is usually cylindrical, the profile shape of the support 161 is cylindrical, which can make the support 161 form a good support for the printing paper roll 150. The cylindrical support 161 rotates more stably at high speed, can stably convey the printing paper roll 150, and adapts to the needs of automatic continuous printing.

[0048] As shown in Figure 3 and Figure 4 some embodiments, the printing paper roll 150 is arranged at the end of the paper bin 120 away from the print head 130, so that the printing paper roll 150 can be close to the side wall 111 of the body 110 away from the print head 130, to facilitate the user to take out the printing paper roll 150. At the same time, the gap between the printing paper roll 150 and the paper bin 120 can be small, and the printing paper roll 150 can be compact in the paper bin 120, thereby facilitating the reduction of the volume of the paper bin 120, and further facilitating the reduction of the volume of the label printer 100.

[0049] As shown in Figure 5 some embodiments, the label printer 100 further comprises a first paper clamping plate 160 arranged in the paper bin 120, and the first paper clamping plate 160 is provided with a support 161 for supporting the printing paper roll 150. The support 161 is arranged in a spaced manner with the side wall 111 of the body 110 away from the print head 130, so that when the small printing paper roll 150 is put into the paper bin 120 or the large printing paper roll 150 is almost used up, there is a certain gap between the side wall 111 of the body 110 away from the print head 130 and the printing paper roll 150, thereby facilitating the user to take out the printing paper roll 150.

[0050] As shown in Figure 2As shown, in some embodiments, the sidewall 111 of the body 110 away from the printhead 130 has a second surface 111b, which faces the printing paper roll 150. The gap distance H2 between the support member 161 and the second surface 111b is 8-20mm. Optionally, H2 is 8mm, 9mm, 10mm, 13mm, 15mm, 18mm, 20mm, etc. If H2 is less than 8mm, it will be inconvenient to remove the printing paper roll; if H2 is greater than 20mm, it will result in an excessively large receiving cavity, thereby increasing the overall volume of the label printer 100.

[0051] Optionally, the first surface 111a and the second surface 111b are perpendicularly arranged and connected to each other.

[0052] like Figure 6 As shown, in some embodiments, the sidewall 111 of the printer body 110 away from the print head 130 is recessed in the direction away from the paper roll 150 to form a relief portion 110b. By providing the relief portion 110b, a larger paper-taking space can be provided between the end of the paper roll 150 near the first surface 111a and the first surface without increasing the size of the printer.

[0053] Optionally, the clearance portion 110b covers the entire axial length of the printing paper roll 150, thereby ensuring that each part of the printing paper roll 150 has a large gap from the side wall 111 of the machine body 110 away from the print head 130, so that the printing paper roll 150 is less likely to rub against the side wall 111 of the machine body 110 away from the print head 130.

[0054] like Figure 5 As shown, in some embodiments, the label printer 100 further includes a first clamping plate 160 disposed in the paper tray 120. The first clamping plate 160 is provided with a support member 161 for supporting the printing paper roll 150. The inner wall surface of the paper tray 120 includes a paper feeding surface 110c, which is used to guide the paper feeding of the printing paper roll 150. Along the thickness direction of the machine body 110, the highest point of the support member 161 is higher than the highest point of the paper feeding surface 110c, so that after the printing paper roll 150 is lifted by the support member 161, the height of the highest point of the printing paper roll 150 is always higher than the height of the highest point of the paper feeding surface 110c, thereby facilitating the user to pick up and put down the printing paper roll 150.

[0055] like Figure 5As shown, in some embodiments, the paper feeding surface 110c is arc-shaped, and the arc-shaped paper feeding surface 110c matches the natural curvature of the paper roll, so that the hard turning of the paper during the release and conveying process can be reduced, and the wrinkles, paper jams or edge wear caused by sharp turns can be avoided. The arc-shaped design makes the paper force uniform during conveying, preventing local stress concentration from causing tearing or stretching deformation. The arc-shaped design can also reduce the contact area between the paper and the paper feeding surface 110c, reduce the risk of static electricity, and prevent the paper from being adsorbed or deviated. The contact between the arc-shaped paper feeding surface 110c and the paper is gradual fitting, rather than the hard extrusion of the flat paper feeding surface, reducing the risk of paper surface scratches or indentations.

[0056] As shown, in some embodiments, the paper feeding surface 110c is arc-shaped, and the arc-shaped paper feeding surface 110c matches the natural curvature of the paper roll, so that the hard turning of the paper during the release and conveying process can be reduced, and the wrinkles, paper jams or edge wear caused by sharp turns can be avoided. The arc-shaped design makes the paper force uniform during conveying, preventing local stress concentration from causing tearing or stretching deformation. The arc-shaped design can also reduce the contact area between the paper and the paper feeding surface 110c, reduce the risk of static electricity, and prevent the paper from being adsorbed or deviated. The contact between the arc-shaped paper feeding surface 110c and the paper is gradual fitting, rather than the hard extrusion of the flat paper feeding surface, reducing the risk of paper surface scratches or indentations. Figure 5 As shown, in some embodiments, the paper feeding surface 110c is arc-shaped, and the arc-shaped paper feeding surface 110c matches the natural curvature of the paper roll, so that the hard turning of the paper during the release and conveying process can be reduced, and the wrinkles, paper jams or edge wear caused by sharp turns can be avoided. The arc-shaped design makes the paper force uniform during conveying, preventing local stress concentration from causing tearing or stretching deformation. The arc-shaped design can also reduce the contact area between the paper and the paper feeding surface 110c, reduce the risk of static electricity, and prevent the paper from being adsorbed or deviated. The contact between the arc-shaped paper feeding surface 110c and the paper is gradual fitting, rather than the hard extrusion of the flat paper feeding surface, reducing the risk of paper surface scratches or indentations.

[0057] As shown, in some embodiments, the paper feeding surface 110c is arc-shaped, and the arc-shaped paper feeding surface 110c matches the natural curvature of the paper roll, so that the hard turning of the paper during the release and conveying process can be reduced, and the wrinkles, paper jams or edge wear caused by sharp turns can be avoided. The arc-shaped design makes the paper force uniform during conveying, preventing local stress concentration from causing tearing or stretching deformation. The arc-shaped design can also reduce the contact area between the paper and the paper feeding surface 110c, reduce the risk of static electricity, and prevent the paper from being adsorbed or deviated. The contact between the arc-shaped paper feeding surface 110c and the paper is gradual fitting, rather than the hard extrusion of the flat paper feeding surface, reducing the risk of paper surface scratches or indentations. Figure 5 As shown, in some embodiments, the paper feeding surface 110c is arc-shaped, and the arc-shaped paper feeding surface 110c matches the natural curvature of the paper roll, so that the hard turning of the paper during the release and conveying process can be reduced, and the wrinkles, paper jams or edge wear caused by sharp turns can be avoided. The arc-shaped design makes the paper force uniform during conveying, preventing local stress concentration from causing tearing or stretching deformation. The arc-shaped design can also reduce the contact area between the paper and the paper feeding surface 110c, reduce the risk of static electricity, and prevent the paper from being adsorbed or deviated. The contact between the arc-shaped paper feeding surface 110c and the paper is gradual fitting, rather than the hard extrusion of the flat paper feeding surface, reducing the risk of paper surface scratches or indentations.

[0058] The paper roll 150 is spaced apart from the paper feeding surface 110c, and the spacing arrangement avoids direct contact between the outer surface of the paper roll and the paper feeding surface 110c, preventing scratches, coating peeling or static adsorption of the paper during conveying. Reducing friction can prevent the paper edge from curling or tearing, ensuring that the paper roll remains flat during long-term storage or use. The spacing arrangement can allow the paper roll to naturally expand when released, avoiding uneven local tension caused by direct pressure from the paper feeding surface 110c. The spacing arrangement can reduce the contact area between the paper and the paper feeding surface 110c, reduce static electricity accumulation, and prevent multiple pages of paper from sticking or deviating. The spacing arrangement can reduce the contact pressure between the paper roll and the paper feeding surface 110c, reduce the load power consumption of the driving motor, and prolong the service life of the equipment. The spacing space can facilitate users to quickly clean paper scraps and debris, reducing the failure rate of the equipment.

[0059] As shown in Figure 4 some embodiments, the cover 140 includes a rotating end 141 hinged to the body 110 and a free end 142 away from the rotating end 141, and when the cover 140 is fully opened, a projection of the free end 142 of the cover 140 on a preset plane is spaced apart from a projection of the paper cassette 120 on the preset plane, the preset plane being perpendicular to a thickness direction of the body 110. That is, the cover 140 has a relatively large opening and closing angle, so that the printing paper roll 150 can be exposed as much as possible, and the cover 140 does not interfere with the taking and placing of paper when the paper is taken.

[0060] As shown in Figure 4 some embodiments, the cover 140 includes a straight section 143 and an arc section 144 connected to the straight section 143, and when the cover 140 is closed on the paper cassette 120, the arc section 144 surrounds the periphery of the printing paper roll 150, and the side wall 111 of the body 110 away from the print head 130 corresponds to an end of the arc section 144 away from the straight section 143.

[0061] As shown in Figure 7 some embodiments, the label printer 100 further includes a first paper clamping plate 160, a second paper clamping plate 170, and a linkage assembly 180, the printing paper roll 150 can be clamped between the first paper clamping plate 160 and the second paper clamping plate 170, the first paper clamping plate 160 and the second paper clamping plate 170 are connected with the linkage assembly 180, the first paper clamping plate 160 and the second paper clamping plate 170 are linked through the linkage assembly 180, and the movement directions of the first paper clamping plate 160 and the second paper clamping plate 170 are opposite.

[0062] The first paper clamping plate 160 and the second paper clamping plate 170 form a clamping space therebetween, and the movement directions of the first paper clamping plate 160 and the second paper clamping plate 170 are opposite, so that the clamping space can be adjusted more flexibly.

[0063] As shown in Figure 7 some embodiments, the linkage assembly 180 includes a gear 183 and oppositely arranged first and second toothed racks 181 and 182, the gear 183 is engaged with the first and second toothed racks 181 and 182 at the same time, the first and second toothed racks 181 and 182 are both slidingly arranged on the body 110, and the movement directions of the first and second toothed racks 181 and 182 are opposite, and the first and second paper clamping plates 160 and 170 are connected with the first and second toothed racks 181 and 182, respectively.

[0064] Thus, by the gear 183 engaging the first rack 181 and the second rack 182 at the same time, the movement between the two first paper clamping plates 160 and the second paper clamping plates 170 is linked, i.e. sliding the first paper clamping plates 160, the second paper clamping plates 170 can also slide synchronously. Thus, the adjustment of the clamping space is more convenient and labor-saving, and the structure of the linkage assembly 180 is simplified, and the space is saved.

[0065] Optionally, the linkage assembly 180 further comprises a first elastic reset member, one end of the first elastic reset member is connected to the machine body 110, and the other end is connected to one of the first paper clamping plates 160, and the first elastic reset member is configured to elastically deform when the external force is lost to drive the first paper clamping plates 160 to move back. Thus, when the adjusting force on the first paper clamping plates 160 is ended without the need to continue to adjust the position of the first paper clamping plates 160, the first elastic reset member can automatically drive the first paper clamping plates 160 to move back, improving the convenience of operation.

[0066] Optionally, the linkage assembly 180 further comprises a second elastic reset member, one end of the second elastic reset member is connected to the machine body 110, and the other end is connected to one of the second paper clamping plates 170, and the second elastic reset member is configured to elastically deform when the external force is lost to drive the second paper clamping plates 170 to move back. Thus, when the adjusting force on the second paper clamping plates 170 is ended without the need to continue to adjust the position of the second paper clamping plates 170, the second elastic reset member can automatically drive the second paper clamping plates 170 to move back, improving the convenience of operation.

[0067] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A label printer characterized by comprising: The label printer comprises: a body having a plurality of side walls, and the plurality of side walls enclosing a mounting cavity; a paper bin mounted in the mounting cavity, the paper bin being used for accommodating a printing paper roll; a print head arranged on the body; a cover body movably connected to the body to open or cover the paper bin; wherein, along the thickness direction of the body, the height of the side wall of the body away from the print head is lower than the height of the highest part of the printing paper roll in a full paper state.

2. The label printer of claim 1, wherein, The label printer further comprises a first paper clamping plate arranged in the paper bin, the first paper clamping plate being provided with a support for supporting the printing paper roll, and along the thickness direction of the body, the highest part of the support is higher than the height of the side wall of the body away from the print head.

3. The label printer of claim 2, wherein, The side wall of the body away from the print head has a first surface perpendicular to the thickness direction of the body, and the height difference between the highest part of the support and the first surface in the thickness direction of the body is 5-15 mm.

4. The label printer of claim 2, wherein, The support is rotatably arranged on the first paper clamping plate, and the profile of the support is cylindrical, and the highest part of the support does not change when the support rotates.

5. The label printer of claim 1, wherein, The printing paper roll is arranged at one end of the paper bin away from the print head.

6. The label printer of claim 1, wherein, The label printer further comprises a first paper clamping plate arranged in the paper bin, the first paper clamping plate being provided with a support for supporting the printing paper roll, and the support is arranged in a spaced manner with the side wall of the body away from the print head.

7. The label printer of claim 6, wherein, The side wall of the body away from the print head has a second surface arranged towards the printing paper roll, and the gap distance between the support and the second surface is 8-20 mm.

8. The label printer of claim 1, wherein, The side wall of the body away from the print head is concave in a direction away from the printing paper roll to form an avoiding part.

9. The label printer of claim 1, wherein, The label printer further comprises a first paper clamping plate arranged in the paper bin, the first paper clamping plate being provided with a support for supporting the printing paper roll, and the inner wall surface of the paper bin comprises a paper feeding surface, and along the thickness direction of the body, the highest part of the support is higher than the highest part of the paper feeding surface.

10. The label printer of claim 9, wherein, The paper feeding surface is an arc surface.

11. The label printer of claim 9, wherein, One end of the paper feeding surface close to the printing paper roll is lower than the other end of the paper feeding surface away from the printing paper roll.

12. The label printer of claim 1, wherein, The inner wall surface of the paper bin comprises a paper feeding surface, the paper feeding surface is closer to the print head than the printing paper roll, and the printing paper roll is arranged in a spaced manner with the paper feeding surface.

13. The label printer of claim 1, wherein, The cover body comprises a rotating end hinged to the body and a free end away from the rotating end, when the cover body is completely opened, the projection of the free end of the cover body on a preset plane is arranged in a spaced manner with the projection of the paper bin on the preset plane, and the preset plane is perpendicular to the thickness direction of the body.

14. The label printer of claim 1, wherein, The cover body comprises a straight line segment and an arc segment connected to the straight line segment, when the cover body covers the paper bin, the arc segment encloses the periphery of the printing paper roll, and the side wall of the body away from the print head corresponds to one end of the arc segment away from the straight line segment.

15. The label printer of claim 1, wherein, The label printer further comprises a first paper clamping plate, a second paper clamping plate and a linkage assembly, the printing paper roll can be clamped between the first paper clamping plate and the second paper clamping plate, the first paper clamping plate and the second paper clamping plate are connected with the linkage assembly, the first paper clamping plate and the second paper clamping plate are linked through the linkage assembly, and the movement directions of the first paper clamping plate and the second paper clamping plate are opposite.

16. The label printer of claim 15, wherein, The linkage assembly comprises a gear and oppositely arranged first and second racks, the gear is engaged with the first and second racks at the same time, the first and second racks are both slidingly arranged on the machine body, the movement directions of the first and second racks are opposite, and the first and second paper clamping plates are connected with the first and second racks respectively.

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