Printing paper limiting structure and printer
By setting an adjustable spacing limit structure and elastic piece-driven protrusions at both ends of the paper placement cavity, the rolling problem of small amount of paper roll is solved, ensuring stable reading of RFID tags and improving the printing effect of the printer.
Patent Information
- Application Number
- CN202422598007.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The existing printers have a small amount of paper rolls, and the large scrolling of the paper rolls up and down leads to disorderly reading RFID tags, affecting the printing effect.
A printing paper limit structure is designed, including first and second limit structures, respectively, with projections on both end walls of the printing paper placement cavity, for inserting into the shaft hole of the printing paper roll, and driving through an adjustable spacing limit structure and elastic member to ensure stable positioning of the printing paper roll.
It effectively avoids the up and down scrolling of small amount of paper roll, ensures stable reading of RFID tags, and improves the printer's printing effect.
Smart Images
Figure CN223187247U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of printers, in particular to a printing paper limiting structure and a printer. Background Art
[0002] In existing thermal printers, the paper roll is usually limited downward by a paper roll limiter plate located on the top wall of the paper placement chamber so that the paper roll can be in a relatively stable position during printing, thereby stabilizing the printing position. However, in order to achieve the anti-counterfeiting effect of the printing paper, most merchants will install RFID tags or chips on both sides of the printing paper roll to identify the manufacturer's source. During the printing process, as the printing paper roll is consumed, the remaining amount of the printing paper roll will gradually decrease. In the later stage, the printing paper roll will roll up and down significantly, causing the reading of the RFID tags on both sides of the printing paper roll to be disordered, and it is easy to fail to read the label information, resulting in poor printing results or stopping printing due to the printer being unable to recognize the manufacturer's information.
[0003] In view of the above-mentioned deficiencies, it is necessary to design a printing paper limiting structure and a printer. Utility Model Content
[0004] Therefore, the technical problem to be solved by the present invention lies in the design of the existing printer. When the remaining amount of the printing paper roll is small, the large-scale up and down rolling of the printing paper roll will cause disorder in the reading of the RFID tags on both sides of the paper roll, thereby providing a printing paper limiting structure and a printer.
[0005] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:
[0006] A printing paper limiting structure includes a printing paper placement cavity, a first limiting structure and a second limiting structure. The first limiting structure and the second limiting structure are respectively arranged corresponding to the two end walls of the printing paper placement cavity. A first protrusion is provided on the inner side wall of the first limiting structure, and a second protrusion is provided on the inner side wall of the second limiting structure. The first limiting structure and the second limiting structure have limiting positions for limiting the printing paper roll. At the limiting positions, the first protrusion and the second protrusion both enter the printing paper placement cavity.
[0007] Furthermore, the length of the first protrusion extending inward from the inner side wall of the first limiting structure is 0.8 mm to 1.2 mm, and / or the length of the second protrusion extending inward from the inner side wall of the second limiting structure is 0.8 mm to 1.2 mm.
[0008] Furthermore, in the length direction of the printing paper placement cavity, the distance between the first limiting structure and the second limiting structure is adjustable.
[0009] Furthermore, it also includes a limiting rack, which is arranged on the side wall of the printing paper placement cavity along the length direction of the printing paper placement cavity, and a limiting block is provided on the first limiting structure corresponding to the limiting rack, and / or a limiting block is provided on the second limiting structure corresponding to the limiting rack, and the limiting block is limited by two adjacent teeth on the limiting rack.
[0010] Furthermore, it also includes an elastic member, which is arranged along the length direction of the printing paper placement cavity, one end of the elastic member is connected to the printing paper placement cavity, and the other end is connected to the first limiting structure or the second limiting structure, and the elastic member is used to drive the first limiting structure to move toward the second limiting structure or to drive the second limiting structure to move toward the first limiting structure.
[0011] Furthermore, the elastic member is a tension spring, one end of which is connected to the side wall of the printing paper placement cavity, and the other end of which is connected to the first limiting structure or the second limiting structure; or
[0012] The elastic member is a compression spring, and the compression spring is located between the end wall of the printing paper placement cavity and the first limiting structure, or the compression spring is located between the end wall of the printing paper placement cavity and the second limiting structure.
[0013] Furthermore, a slide groove / guide rail is provided on the side wall of the printing paper placement cavity, and a guide rail / slide groove is correspondingly provided on the first limiting structure or the second limiting structure, and the guide rail is slidably matched with the slide groove.
[0014] Furthermore, the first protrusion and the first limiting structure are integrally formed or are independently formed, and / or the second protrusion and the second limiting structure are integrally formed or are independently formed.
[0015] Furthermore, it also includes a printing paper roll core, and both ends of the printing paper roll core are respectively recessed inward to form grooves, and the first protrusion and the second protrusion respectively enter the two grooves.
[0016] The technical solution of this utility model has the following advantages:
[0017] 1. The printing paper limiting structure provided by the utility model has the first protrusion and the second protrusion both entering the printing paper placement cavity in the limiting position. The first protrusion and the second protrusion can be inserted into the shaft hole of the printing paper roll in the printing paper placement cavity to limit the printing paper roll. This prevents the printing paper roll from rolling up and down significantly when the remaining paper roll is small, thereby causing disorder in the reading of RFID tags on both sides of the paper roll.
[0018] 2. The printing paper limiting structure provided by the present invention has an adjustable spacing between the first limiting structure and the second limiting structure in the length direction of the printing paper placement cavity, thereby enabling the printing paper limiting structure to adapt to printing paper rolls of different widths. At the same time, the spacing between the first limiting structure and the second limiting structure can be adjusted to ensure a greater initial restraining force on the printing paper roll, thereby further preventing the printing paper roll from rolling up and down significantly when the remaining paper roll is small, thereby causing disorder in the reading of RFID tags on both sides of the printing paper roll.
[0019] A printer comprises the aforementioned printing paper limiting structure.
[0020] The technical solution of this utility model has the following advantages:
[0021] The printer provided by the utility model has all the advantages of the aforementioned printing paper limiting structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0023] Figure 1 This is a top view of implementation mode 1 in the embodiment of the present utility model;
[0024] Figure 2 This is a three-dimensional schematic diagram of implementation method 1 in the embodiment of the present utility model;
[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0026] Figure 4 for Figure 2 Enlarged view of point B in the middle;
[0027] Figure 5 This is another perspective schematic diagram of implementation method 1 in the embodiment of the present utility model;
[0028] Figure 6 This is a three-dimensional schematic diagram of the first limiting structure and the second limiting structure in the first embodiment of the present utility model;
[0029] Figure 7 This is another perspective schematic diagram of the first limiting structure and the second limiting structure in the first embodiment of the present utility model;
[0030] Figure 8This is a three-dimensional schematic diagram of implementation method 2 in the embodiment of the present utility model;
[0031] Figure 9 This is a three-dimensional schematic diagram of the first limiting structure and the second limiting structure in the second embodiment of the present utility model;
[0032] Figure 10 This is another three-dimensional schematic diagram of the first limiting structure and the second limiting structure in the second embodiment of the present utility model.
[0033] Figure 11 This is a bottom schematic diagram of implementation mode 2 in the embodiment of the present utility model;
[0034] Figure 12 for Figure 11 Enlarged view of point C in the middle;
[0035] Figure 13 This is another bottom schematic diagram of implementation mode 2 in the embodiment of the present utility model;
[0036] Figure 14 This is another bottom schematic diagram of the second embodiment of the present utility model without the first limiting structure.
[0037] Description of reference numerals:
[0038] 1. Printer; 11. Print paper placement cavity; 111. Limiting rack; 112. Guide rail; 113. Slot; 114. Notch; 12. First limiting structure; 121. First protrusion; 122. Limiting block; 123. Bottom plate; 1231. Slide; 124. Hook; 125. First hook; 126. Second hook; 127. Slider; 13. Second limiting structure; 131. Second protrusion; 14. Elastic member. DETAILED DESCRIPTION
[0039] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0041] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0042] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0043] Before introducing the present utility model, it is emphasized again that the technical problem to be solved by this application is: in existing thermal printers, the printing paper roll is usually limited downward by a paper roll limiting plate provided on the top wall of the printing paper placement cavity, so that the printing paper roll can be in a relatively stable position during the printing process, thereby stabilizing the printing position. However, in order to achieve the anti-counterfeiting effect of the printing paper, most merchants will set RFID tags or chips on both sides of the printing paper roll to identify the manufacturer's source. During the printing process, as the printing paper roll is consumed, the remaining amount of the printing paper roll will gradually decrease, and in the later stage, the printing paper roll will roll up and down significantly, resulting in disordered reading of the RFID tags on both sides of the printing paper roll, and it is easy to fail to read the label information. In order to solve this problem, the present application proposes a printing paper limiting structure and a printer.
[0044] Example 1
[0045] like Figures 1 to 14As shown, this embodiment provides a printing paper limiting structure, including a printing paper placement cavity 11, a first limiting structure 12 and a second limiting structure 13. The first limiting structure 12 and the second limiting structure 13 are respectively arranged corresponding to the two end walls of the printing paper placement cavity 11. The first limiting structure 12 is provided with a first protrusion 121 on the inner side wall, and the second limiting structure 13 is provided with a second protrusion 131 on the inner side wall. The first limiting structure 12 and the second limiting structure 13 have limiting positions for limiting the printing paper roll. At the limiting positions, the first protrusion 121 and the second protrusion 131 both enter the printing paper placement cavity 11.
[0046] In this embodiment, since the first protrusion 121 and the second protrusion 131 both enter the printing paper placement cavity 11 in the limit position, the first protrusion 121 and the second protrusion 131 can be inserted into the axis hole of the printing paper roll in the printing paper placement cavity 11 to limit the printing paper roll to prevent the printing paper roll from rolling up and down significantly when the remaining amount of printing paper roll is small, thereby causing disorder in the reading of the RFID tags on both sides of the printing paper roll.
[0047] The printing paper in this embodiment is specifically a thermal printing paper, but it can also be other rolled printing paper.
[0048] Furthermore, the length of the first protrusion 121 extending inward from the inner side wall of the first limiting structure 12 is 0.8mm to 1.2mm, preferably 1mm, and / or the length of the second protrusion 131 extending inward from the inner side wall of the second limiting structure 13 is 0.8mm to 1.2mm, preferably 1mm.
[0049] Furthermore, the device also includes a printing paper roll core (not shown). The two ends of the printing paper roll core are recessed into grooves, into which the first protrusion 121 and second protrusion 131 of the printing paper retaining structure respectively enter. The printing paper roll core is inserted into the axial hole of the printing paper roll. It should be noted that the printing paper roll is different from the printing paper roll core; the printing paper roll is inserted outside the printing paper roll core.
[0050] Furthermore, in the length direction of the printing paper placement cavity 11, the distance between the first limiting structure 12 and the second limiting structure 13 is adjustable. In this way, the printing paper limiting structure can adapt to printing paper rolls of different widths. At the same time, the adjustment of the distance between the first limiting structure 12 and the second limiting structure 13 can ensure that the printing paper roll has a greater initial restraining force, thereby further avoiding the printing paper roll from rolling up and down significantly when the remaining paper roll is small, thereby causing disorder in the reading of RFID tags on both sides of the paper roll.
[0051] Two implementations of maintaining the spacing between the first limiting structure 12 and the second limiting structure 13 after the spacing between the first limiting structure 12 and the second limiting structure 13 is adjusted are given below. It should be understood that these are not exhaustive. Specifically, they are as follows:
[0052] Implementation method 1: Figures 1 to 7 As shown, the first limiting structure 12 includes a vertical portion and a bottom plate 123 (as shown in FIG. Figure 6 As shown), the bottom plate 123 is perpendicular to the vertical portion, and the bottom plate 123 is arc-shaped, and its outer contour is adapted to the shape of the side wall of the printing paper placement cavity 11. The printing paper limiting structure also includes a limiting rack 111, and the limiting rack 111 is provided on the side wall of the printing paper placement cavity 11 along the length direction of the printing paper placement cavity 11. A limiting block 122 (as shown) is provided on the first limiting structure 12 corresponding to the limiting rack 111. Figure 3 As shown), and / or, a limiting block 122 is provided on the second limiting structure 13 corresponding to the limiting rack 111. In this embodiment, the limiting block 122 is provided only on the first limiting structure 12, and the second limiting structure 13 is detachably or non-detachably connected to the end wall of the printing paper placement cavity 11, and the limiting block 122 is provided at the junction of the vertical portion and the bottom plate 123. The limiting block 122 is limited by two adjacent teeth on the limiting rack 111. In this embodiment, the second limiting structure 13 is plugged into and matched with the end wall of the printing paper placement cavity 11 perpendicular to the longitudinal direction of the printing paper placement cavity 11.
[0053] When in use, first put the printing paper roll outside the printing paper roll core, then move the first limiting structure 12 to the left to increase the distance between the first limiting structure 12 and the second limiting structure 13, and then put the printing paper roll core with the printing paper roll between the first limiting structure 12 and the second limiting structure 13, so that the two grooves on the printing paper roll core are aligned with the first protrusion 121 and the second protrusion 131 respectively, and then move the first limiting structure 12 to the right so that the first protrusion 121 and the second protrusion 131 respectively enter the grooves, and ensure that the first limiting structure 12 and the second limiting structure 13 have appropriate friction between the two ends of the printing paper roll respectively. At the same time, with the help of the limiting effect of the adjacent two teeth on the limiting rack 111 on the limiting block 122, the limiting effect of the first limiting structure 12 and the second limiting structure 13 on the two ends of the printing paper roll can be maintained. In this way, even if a small amount of printing paper roll is left, the printing paper roll will not roll up and down significantly, so as to better read the RFID tags or chips at both ends of the printing paper roll.
[0054] In order to guide the sliding of the first limiting structure 12, two opposite sides of the bottom plate 123 of the first limiting structure 12 are respectively provided with sliding grooves 1231 (such as Figure 6 As shown), correspondingly, a guide rail 112 is protruded from the side wall of the printing paper placement cavity 11 (as shown Figure 4 As shown), the slide groove 1231 is slidably engaged with the guide rail 112.
[0055] Implementation method 2: Figures 8 to 14 As shown, the printing paper limiting structure further includes an elastic member 14, which is arranged along the length direction of the printing paper placement cavity 11. One end of the elastic member 14 is connected to the printing paper placement cavity 11, and the other end is connected to the first limiting structure 12 or the second limiting structure 13. The elastic member 14 is used to drive the first limiting structure 12 to move toward the second limiting structure 13 or to drive the second limiting structure 13 to move toward the first limiting structure 12. In this embodiment, the elastic member 14 is a tension spring, one end of which is connected to the side wall of the printing paper placement cavity 11, and the other end is connected to the hook 124 (as shown in FIG. 1 ) on the first limiting structure 12. Figure 12 As shown), of course, the tension spring may be connected to the second limiting structure 13 instead of the first limiting structure 12.
[0056] When in use, first put the printing paper roll outside the printing paper roll core, then push the first limiting structure 12 to the left to increase the distance between the first limiting structure 12 and the second limiting structure 13, and then put the printing paper roll core with the printing paper roll between the first limiting structure 12 and the second limiting structure 13, so that the two grooves on the printing paper roll core are aligned with the first protrusion 121 and the second protrusion 131 respectively, and then release the first limiting structure 12. The tension spring will pull the first limiting structure 12 toward the second limiting structure 13, so that the first protrusion 121 and the second protrusion 131 respectively enter the grooves, and ensure that the first limiting structure 12 and the second limiting structure 13 can respectively maintain appropriate friction between the two ends of the printing paper roll. In this way, even if a small amount of printing paper roll is left, the printing paper roll will not roll up and down significantly, so as to better read the RFID tags or chips at both ends of the printing paper roll.
[0057] In order to guide the sliding of the first limiting structure 12, two slots 113 are provided on the side wall of the printing paper placement cavity 11 at intervals, and two first hooks 125 (such as Figure 12 As shown in FIG, the two first hooks 125, although having different shapes, are located on the same side of the first limiting structure 12. The two first hooks 125 pass through a slot 113 in the printing paper placement cavity 11 and protrude from the outer wall of the printing paper placement cavity 11. The two first hooks 125 hook the outer wall of the printing paper placement cavity 11. In addition, two second hooks 126 (as shown in FIG) are spaced apart at the bottom of the first limiting structure 12. Figure 13 As shown in FIG, the two second hooks 126 are different in appearance but are located on the same side of the first limiting structure 12. In order to reduce the risk of damage due to mutual squeezing during the assembly of the first limiting structure 12 onto the side wall of the printing paper placement cavity 11, a notch 114 is provided on the side wall of the printing paper placement cavity 11 at the position corresponding to the second hook 126 (as shown in FIG. Figure 14As shown in FIG, the second hook 126 extends from another slot 113 in the printing paper placement cavity 11 and protrudes from the outer wall of the printing paper placement cavity 11. When the first limiting structure 12 moves along the length direction of the printing paper placement cavity 11, the first hook 125 and the second hook 126 both slide along the outer wall of the printing paper placement cavity 11, and the first hook 125 and the second hook 126 both hook into the printing paper placement cavity 11 and hook the side wall of the printing paper placement cavity 11, thereby preventing the first limiting structure 12 from falling off from the printing paper placement cavity 11. A slider 127 (as shown in FIG. Figure 12 As shown, the slider 127 engages with the wall of the corresponding slot 113. As the first limiting structure 12 moves along the length of the printing paper placement cavity 11, the slider 127 slides along the wall of the corresponding slot 113. Of course, the number of first hooks 125 and / or second hooks 126 can also be one, and the number of slots 113 can also be one. When there is only one slot 113, either the first hook 125 or the second hook 126 can be provided. In the second embodiment, the slide groove 1231 is implemented as a slot 113, and the guide rail 112 is implemented as a first hook 125 and a second hook 126.
[0058] Of course, the elastic member 14 may also be a compression spring, which is located between the end wall of the printing paper placement cavity 11 and the first limiting structure 12 , or between the end wall of the printing paper placement cavity 11 and the second limiting structure 13 .
[0059] Furthermore, the first protrusion 121 and the first limiting structure 12 are integrally formed or independently formed, and / or the second protrusion 131 and the second limiting structure 13 are integrally formed or independently formed.
[0060] Example 2
[0061] like Figures 1 to 14 As shown, this embodiment provides a printer 1, particularly a thermal printer, including the aforementioned printing paper limiting structure. Other parts of the printer 1 are prior art and will not be described in detail here.
[0062] The printer 1 provided by the present invention has all the advantages of the aforementioned printing paper limiting structure.
[0063] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.
Claims
1. A printing paper limiting structure, characterized in that: The invention comprises a printing paper placement cavity (11), a first limiting structure (12) and a second limiting structure (13); the first limiting structure (12) and the second limiting structure (13) are respectively arranged corresponding to the two end walls of the printing paper placement cavity (11); a first protrusion (121) is arranged on the inner side wall of the first limiting structure (12); a second protrusion (131) is arranged on the inner side wall of the second limiting structure (13); the first limiting structure (12) and the second limiting structure (13) have limiting positions for limiting the printing paper roll; at the limiting positions, the first protrusion (121) and the second protrusion (131) both enter the printing paper placement cavity (11).
2. The printing paper limiting structure according to claim 1, characterized in that: The length of the first protrusion (121) extending inward from the inner side wall of the first limiting structure (12) is 0.8 mm to 1.2 mm, and / or the length of the second protrusion (131) extending inward from the inner side wall of the second limiting structure (13) is 0.8 mm to 1.2 mm.
3. The printing paper limiting structure according to claim 1, characterized in that: In the length direction of the printing paper placement cavity (11), the distance between the first limiting structure (12) and the second limiting structure (13) is adjustable.
4. The printing paper limiting structure according to claim 3, characterized in that: It also includes a limiting rack (111), wherein the limiting rack (111) is arranged on the side wall of the printing paper placement cavity (11) along the length direction of the printing paper placement cavity (11); A limiting block (122) is provided on the first limiting structure (12) corresponding to the limiting rack (111), and / or a limiting block (122) is provided on the second limiting structure (13) corresponding to the limiting rack (111); The limiting block (122) is limited by two adjacent teeth on the limiting rack (111).
5. The printing paper limiting structure according to claim 3, characterized in that: The invention also includes an elastic member (14), which is arranged along the length direction of the printing paper placement cavity (11), one end of the elastic member (14) is connected to the printing paper placement cavity (11), and the other end is connected to the first limiting structure (12) or the second limiting structure (13), and the elastic member (14) is used to drive the first limiting structure (12) to move toward the second limiting structure (13) or to drive the second limiting structure (13) to move toward the first limiting structure (12).
6. The printing paper limiting structure according to claim 5, characterized in that: The elastic member (14) is a tension spring, one end of which is connected to the side wall of the printing paper placement cavity (11), and the other end of which is connected to the first limiting structure (12) or the second limiting structure (13); or, The elastic member (14) is a compression spring, and the compression spring is located between the end wall of the printing paper placement cavity (11) and the first limiting structure (12), or the compression spring is located between the end wall of the printing paper placement cavity (11) and the second limiting structure (13).
7. The printing paper limiting structure according to claim 3, characterized in that: A slide groove (1231) / guide rail (112) is provided on the side wall of the printing paper placement cavity (11), and a guide rail (112) / slide groove (1231) is correspondingly provided on the first limiting structure (12) or the second limiting structure (13), and the guide rail (112) and the slide groove (1231) are slidably matched.
8. The printing paper limiting structure according to any one of claims 1 to 7, characterized in that: The first protrusion (121) and the first limiting structure (12) are integrally formed or independently formed; and / or, The second protrusion (131) and the second limiting structure (13) are integrally formed or independently formed.
9. The printing paper limiting structure according to any one of claims 1 to 7, characterized in that: It also includes a printing paper roll core, wherein both ends of the printing paper roll core are respectively recessed inwardly to form grooves, and the first protrusion (121) and the second protrusion (131) respectively enter the two grooves.
10. A printer, characterized in that: The printing paper limiting structure comprises the printing paper limiting structure according to any one of claims 1 to 9.