Printer

Abstract

The utility model discloses a printer, a printing paper bin suitable for accommodating a printing paper roll is formed in the printer, the printer further comprises a first paper blocking structure, the first paper blocking structure is arranged corresponding to one end wall of the printing paper bin, the first paper blocking structure comprises a base and an insertion rod, and the insertion rod is rotatably connected with the base. The inserting rod can swing towards the outside of the printing paper bin so as to sleeve the inserting rod with a printing paper roll, and the inserting rod can also swing towards the inside of the printing paper bin so as to support the printing paper roll upwards, so that the printing paper roll can be vertically limited by virtue of the inserting rod, and the printing paper roll is prevented from rolling up and down greatly when the remaining amount of the printing paper roll is small; in addition, due to the design, sleeving connection and replacement of the printing paper roll can be facilitated, and after sleeving connection of the printing paper roll is completed, the inserting connection rod can quickly return under the action of the gravity of the inserting connection rod only by loosening the inserting connection rod.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a printer. Background Art

[0002] 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 bin, so that the printing paper roll can be in a relatively stable position during the printing process, thereby stabilizing the printing position. In addition, in order to achieve the anti-counterfeiting effect of the printing paper, most merchants will usually set RFID tags or chips on both sides of the printing paper roll to identify the manufacturer's source. However, during the printing process, as the printing paper roll is consumed, the remaining amount of the printing paper roll will gradually decrease, and there will be a large gap between the paper roll limiting plate and the printing paper roll. 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, thereby causing the printer to fail to recognize the manufacturer's information and produce poor printing results or stop printing. In view of the above shortcomings, it is necessary to design a printer. Utility Model Content

[0003] 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 printing paper roll, thereby providing a printer.

[0004] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0005] A printer, wherein a printing paper bin suitable for accommodating a printing paper roll is formed inside the printer, and the printer also includes a first paper blocking structure, which is arranged corresponding to an end wall of the printing paper bin and includes a base and a plug-in rod. The plug-in rod is rotatably connected to the base, and the plug-in rod can be swung toward the outside of the printing paper bin to fit the printing paper roll onto the plug-in rod. The plug-in rod can also be swung toward the inside of the printing paper bin to support the printing paper roll upward.

[0006] Furthermore, the first paper blocking structure can slide in the printing paper bin along the length direction of the printing paper bin.

[0007] Furthermore, a limiting rack is provided on the inner side wall of the printing paper bin, and the limiting rack is arranged along the length direction of the printing paper bin. A limiting block is provided on the first paper blocking structure corresponding to the limiting rack, and the limiting block is limited by the teeth on the limiting rack.

[0008] Furthermore, the base includes an extension plate, which extends along the length direction of the printing paper bin. The two opposite sides of the extension plate are respectively recessed inward and provided with a slide groove. The inner side wall of the printing paper bin is protruding outward and provided with a guide rail, and the slide groove slides in conjunction with the guide rail.

[0009] Furthermore, the base includes a base, which includes a vertical plate and two ear plates connected to the outer side walls of the vertical plate and arranged at intervals, and the two ear plates are respectively provided with pivot grooves, and the connecting rod includes a rod body and a pivot joint formed by partially protruding outward from the top of the outer end of the rod body, and the two opposite sides of the pivot joint are respectively provided with pivots protruding outward, and the two pivots are respectively rotatably connected to the two pivot grooves, and the outer end surface of the rod body abuts against the vertical plate to stop the connecting rod from swinging toward the printing paper bin.

[0010] Furthermore, the inner side wall of the vertical plate is recessed inward to form a clearance groove, and the outer end surface of the rod body abuts against the bottom wall of the groove.

[0011] Furthermore, the rod body is provided with a plurality of grooves along its length direction.

[0012] Furthermore, length scale marks are provided on the inner side wall of the printing paper bin.

[0013] Furthermore, it also includes a printing paper roll core, the plug rod is inserted into the groove in the printing paper roll core from one end of the printing paper roll core, and the printing paper roll is sleeved outside the printing paper roll core.

[0014] Furthermore, it also includes a second paper blocking structure set at a distance from the first paper blocking structure, and the second paper blocking structure is installed on the other outside of the printing paper bin.

[0015] The technical solution of this utility model has the following advantages:

[0016] The first paper stop structure is arranged corresponding to one end wall of the paper bin, and comprises a base and a plug-in rod, wherein the plug-in rod is rotatably connected to the base, and the plug-in rod can be swung toward the outside of the paper bin to put the paper roll on the plug-in rod, and the plug-in rod can also be swung toward the inside of the paper bin to support the paper roll upward. In this way, the paper roll can be vertically limited by the plug-in rod to prevent the paper roll from rolling up and down significantly when the remaining paper roll is small, thereby causing disorder in reading the RFID tags on both sides of the paper roll. In addition, since the plug-in rod is rotatably connected to the base, the plug-in rod can be swung toward the outside of the paper bin to put the paper roll on the plug-in rod, and the plug-in rod can also be swung toward the inside of the paper bin to support the paper roll upward. Such a design can facilitate the connection and replacement of the paper roll, and after the paper roll is connected, the plug-in rod only needs to be released, and the plug-in rod can quickly return to its original position under the action of its own gravity.

[0017] 2. In the printer provided by the present invention, the first paper stop structure can slide within the printing paper compartment along the length direction of the printing paper compartment. This design allows the printer to adapt to printing paper rolls of different widths. At the same time, the initial restraining force applied to the printing paper roll can be adjusted, 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.

[0018] 3. The printer provided by the present invention comprises a base including a vertical plate and two ear plates connected to the outer side walls of the vertical plate and spaced apart from each other, the two ear plates respectively provided with pivot grooves, the connecting rod comprising a rod body and a pivot joint formed by partially protruding outward from the top portion of the outer end of the rod body, the two opposite sides of the pivot joint respectively provided with pivots protruding outward, the two pivots respectively being rotatably connected to the two pivot grooves, the outer end surface of the rod body abutting against the vertical plate to stop the connecting rod from swinging toward the printing paper compartment, thereby preventing the connecting rod from being damaged by excessive swinging, and at the same time ensuring that the printing paper roll is in a suitable position, which is beneficial for subsequent printing operations.

[0019] 4. In the printer provided by the present invention, the inner side wall of the vertical plate is recessed inward to form a clearance groove, and the outer end surface of the rod body is abutted against the bottom wall of the clearance groove. Due to the provision of the clearance groove, the size of the pivot joint along the length direction of the rod body can be reduced, thereby reducing the risk of breakage at the intersection of the pivot joint and the rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 This is a three-dimensional schematic diagram of the printer in the first embodiment of the present utility model;

[0022] Figure 2 for Figure 1 A three-dimensional diagram after removing the printing paper roll core;

[0023] Figure 3 This is a schematic top view of the printer in the first embodiment of the present invention;

[0024] Figure 4 for Figure 3 Schematic diagram of the cross section along line AA;

[0025] Figure 5 This is a three-dimensional schematic diagram of the base of the first paper stop structure in the first embodiment of the present utility model;

[0026] Figure 6 This is a three-dimensional schematic diagram of the plug-in rod of the first paper stop structure in the first embodiment of the present invention;

[0027] Figure 7 This is a three-dimensional schematic diagram of a printer in the second embodiment of the present utility model;

[0028] Figure 8 This is another three-dimensional schematic diagram of the printer in the second embodiment of the present invention;

[0029] Figure 9 This is a three-dimensional schematic diagram of a printer in a third embodiment of the present invention;

[0030] Figure 10 This is another three-dimensional schematic diagram of the printer in the third embodiment of the present invention;

[0031] Figure 11 This is a three-dimensional schematic diagram of the third embodiment of the present invention without the first paper stop structure and the second paper stop structure;

[0032] Figure 12 This is a three-dimensional schematic diagram from another angle after removing the first paper stop structure and the second paper stop structure in the third embodiment of the present invention;

[0033] Figure 13 This is a three-dimensional schematic diagram of the first paper stop structure in the third embodiment of the present invention;

[0034] Figure 14 This is a three-dimensional schematic diagram of the first paper stop structure in the third embodiment of the present invention from another angle;

[0035] Figure 15 This is a top view of the plug rod in the third embodiment of the present utility model;

[0036] Figure 16 For the Figure 15 Schematic cross-section of the middle BB line;

[0037] Figure 17 It is a three-dimensional schematic diagram of the second paper stop structure in the third embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 1. Printer; 11. Paper tray; 111. Positioning rack; 112. Guide rail; 113. Rod slot; 114. Base slot; 115. Mounting slot; 1151. Notch; 116. Through hole; 12. First paper stop structure; 121. Base; 1211. Base; 12111. Vertical plate; 121111. Giving slot; 12112. Ear plate; 121121. Pivot slot; 1212. Extension plate; 12121. , slide groove; 1213, protrusion; 122, plug-in rod; 1221, rod body; 1222, pivot joint; 12221, pivot; 12211, groove; 123, limit block; 1223, root; 1224, connecting part; 12242, narrow slot; 1225, head; 13, second paper stop structure; 131, block; 132, hook; 2, printing paper roll; 14, spring piece; B, bottom wall; C, spring groove; D, compression spring. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] Example 1

[0045] like Figures 1 to 6 As shown, this embodiment provides a printer 1, in which a printing paper bin 11 suitable for accommodating a printing paper roll 2 is formed. The printer 1 also includes a first paper blocking structure 12. The first paper blocking structure 12 is arranged corresponding to an end wall of the printing paper bin 11, and includes a base 121 and a connecting rod 122 connected to the base 121. The connecting rod 122 is used to socket and support the printing paper roll 2 upward. In this way, the connecting rod 122 can be used to vertically limit the printing paper roll 2 to prevent the printing paper roll 2 from rolling up and down significantly when the remaining amount of the printing paper roll 2 is small, thereby causing disorder in the reading of the RFID tags on both sides of the printing paper roll 2. In addition, since the connecting rod 122 is rotatably connected to the base 121, the connecting rod 122 can be swung toward the outside of the printing paper bin 11 to put the printing paper roll 2 on the connecting rod 122, and the connecting rod 122 can also be swung toward the inside of the printing paper bin 11 to support the printing paper roll 2 upward. This design facilitates the connection and replacement of the printing paper roll 2, and after the printing paper roll 2 is connected, it is only necessary to loosen the connecting rod 122, and the connecting rod 122 can quickly return to its position under the action of its own gravity.

[0046] Furthermore, the first paper stop structure 12 can slide in the printing paper bin 11 along the length direction of the printing paper bin 11. Such a design enables the printer 1 to adapt to printing paper rolls 2 of different widths. At the same time, the initial restraining force on the printing paper roll 2 can also be adjusted, thereby further preventing the printing paper roll 2 from rolling up and down significantly when the remaining amount of the printing paper roll 2 is small, thereby causing disorder in the reading of the RFID tags on both sides of the printing paper roll 2.

[0047] Furthermore, a limiting rack 111 is provided on the inner sidewall of the paper tray 11, extending along the length of the paper tray 11. A limiting block 123 is provided on the first paper stop 12, corresponding to the limiting rack 111. The limiting block 123 is restrained by the teeth on the limiting rack 111. In this embodiment, there are two limiting racks 111. Of course, multiple limiting blocks 123 may correspond to each limiting rack 111 to achieve better positioning.

[0048] Furthermore, if Figure 5 As shown, the base 121 includes a base 1211, which includes a vertical plate 12111 and two ear plates 12112 connected to the outer sidewall of the vertical plate 12111 and spaced apart from each other. The ear plates 12112 each have a pivot slot 121121 formed therein. As shown in Figure 6, the connecting rod 122 includes a rod body 1221 and a pivot joint 1222 formed by partially protruding outward from the top of the outer end of the rod body 1221. Pivots 12221 protrude outward from opposite sides of the pivot joint 1222. The two pivots 12221 are rotatably connected to the two pivot slots 121121, respectively. The outer end surface of the rod body 1221 abuts against the vertical plate 12111 to prevent the connecting rod 122 from swinging into the printing paper compartment 11. This prevents the connecting rod 122 from excessive swinging and damage, while ensuring that the printing paper roll 2 is properly positioned, facilitating subsequent printing operations.

[0049] Furthermore, the inner side wall of the vertical plate 12111 is recessed inward to form a clearance groove 121111 (such as Figure 4 and Figure 5 As shown), the outer end surface of the rod body 1221 and the bottom wall B of the clearance groove 121111 (as shown Figure 5 Due to the provision of the clearance groove 121111, the dimension of the pivot joint 1222 along the length direction of the rod body 1221 can be reduced, thereby reducing the risk of fracture at the intersection of the pivot joint 1222 and the rod body 1221.

[0050] Furthermore, a plurality of grooves 12211 are provided on the rod body 1221 along its length direction. Due to the provision of the grooves 12211 , the amount of glue used in the rod body 1221 can be reduced, thereby preventing shrinkage during injection molding.

[0051] Preferably, the base 121 further includes an extension plate 1212, which is connected to the bottom of the base 1211 and extends in the same direction as the connecting rod 122. In this embodiment, two opposite sides of the extension plate 1212 are recessed inward to form a slide groove 12121. Two guide rails 112 are provided on the inner sidewall of the printing paper compartment 11 at intervals and project outward. The slide grooves 12121 slidably engage with the guide rails 112 to guide the movement of the first paper stop 12 along the length of the printing paper compartment 11. Furthermore, the aforementioned stop block 123 is disposed at the intersection of the vertical plate 12111 and the extension plate 1212. Alternatively, the stop block 123 may be disposed on the vertical plate 12111 or on the extension plate 1212.

[0052] Furthermore, it also includes a printing paper roll core, the plug rod 122 is inserted into the groove 12211 in the printing paper roll core from one end of the printing paper roll core, and the printing paper roll 2 is sleeved outside the printing paper roll core.

[0053] Furthermore, it also includes a second paper stop structure 13 set at a distance from the first paper stop structure 12. The second paper stop structure 13 is installed on the other outside of the printing paper bin 11. The second paper stop structure 13 cooperates with the first paper stop structure 12 to limit the printing paper roll 2 in the length direction of the printing paper roll 2.

[0054] Example 2

[0055] This embodiment provides a printer 1, such as Figure 7 and Figure 8 As shown, the main difference between the printer 1 in this embodiment and the printer 1 in Example 1 is that the printer 1 in this embodiment does not have a connecting rod 122. Instead, a spring 14 is provided above the paper compartment 11 to limit the position of the paper roll. Due to the elasticity of the spring 14, as the paper is consumed, the spring 14 can adaptively deform to maintain contact with the paper roll, thereby ensuring stable rotation of the paper roll within the paper compartment 11. Of course, the spring 14 can also be replaced by a pressure plate, which uses a torsion spring to ensure constant contact with the paper roll. This is a conventional design and will not be described in detail here. This embodiment still has a first paper stop structure 12 and a second paper stop structure 13.

[0056] The printer 1 in this embodiment can still effectively limit the vertical position of the printing paper roll, thereby preventing the printing paper roll from rolling up and down significantly when the remaining printing paper roll is small, thereby causing disorder in the reading of the RFID tags on both sides of the printing paper roll.

[0057] Example 3

[0058] This embodiment provides a printer 1, such as Figures 9 to 17As shown, the main difference between the printer 1 in this embodiment and the printer 1 in Example 1 is that the plug-in rod 122 of the printer 1 in this embodiment is plugged into the base 121 along the length direction of the printing paper bin 11.

[0059] Specifically, a rod groove 113 and a base groove 114 located inside the rod groove 113 are provided on one end wall of the printing paper bin 11 corresponding to the first paper stop structure 12, and the rod groove 113 is communicated with the base groove 114. During the assembly process, the plug-in rod 122 is first plugged into the base 121, and then the first paper stop structure 12 is downwardly installed into the printing paper bin 11, so that the root 1223 of the plug-in rod 122 is inserted into the rod groove 113, and the base 121 is inserted into the base groove 114. A mounting groove 115 is provided in the printing paper bin 11 corresponding to the second paper stop structure 13, and a notch 1151 is provided on the groove wall of the mounting groove 115 facing the first paper stop structure 12, and a stop block 131 (such as Figure 17 As shown), the stopper 131 protrudes outwardly along the length direction of the printing paper bin 11 from the outer side wall of the second paper stop structure 13 facing away from the first paper stop structure 12, and the bottom end of the second paper stop structure 13 is provided with a hook 132 (as shown Figure 17 When the second paper blocking structure 13 is assembled with the mounting groove 115, the blocking block 131 partially enters the mounting groove 115 and presses downward against the notch 1151. The hook 132 passes through the through hole 116 on the wall of the printing paper bin 11 (as shown). Figure 12 As shown) and protrudes from the warehouse wall and is engaged with the warehouse wall to prevent the second paper blocking structure 13 from separating from the warehouse wall.

[0060] Specifically, if Figures 13 to 16As shown, the plug rod 122 includes a flat root portion 1223, a cylindrical connecting portion 1224, and a cylindrical head portion 1225. A spring slot C is defined within the plug rod 122 to accommodate a compression spring D. The spring slot C is primarily located within the connecting portion 1224, with its ends extending into the root portion 1223 and the head portion 1225, respectively. The compression spring D serves to better press against the base 121, preventing the base 121 from shifting left or right during printing, thereby affecting the stability of the printing paper roll. A plug slot (not labeled) is defined on the end of the connecting portion 1224 that faces the head portion 1225. The end of the head portion 1225 that faces away from the second paper stop 13 is inserted into the plug slot within the connecting portion 1224. In the free state, there is a gap between the head 1225 and the bottom of the insertion slot. When the first paper stopper 12 is inserted into the printing paper compartment 11, the head 1225 can be pressed into the insertion slot based on the gap between the head 1225 of the plug-in rod 122 and the second paper stopper 13, allowing the first paper stopper 12 to be smoothly inserted into the printing paper compartment 11. Furthermore, two slots 12242 are defined on opposite sides of the connecting portion 1224. Two symmetrical protrusions 1213 protrude from the inner sidewall of the base 121, projecting toward the second paper stopper 13. The protrusions 1213 engage the slots 12242 to prevent the plug-in rod 122 from rotating. Furthermore, the compression spring D abuts the two protrusions 1213, pressing the base 121 against one side, thereby enhancing the stability of the printing paper roll during printing. Preferably, a plurality of protrusions are provided around the printing paper roll core on the inner side wall of the base 121 facing the second paper stopping structure 13, for applying appropriate friction force to the printing paper roll core to better limit the printing paper roll.

[0061] The printer 1 in this embodiment can still effectively limit the vertical position of the printing paper roll, thereby preventing the printing paper roll from rolling up and down significantly when the remaining printing paper roll is small, thereby causing disorder in the reading of the RFID tags on both sides of the printing paper roll.

[0062] 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 printer, characterized in that: A printing paper bin (11) suitable for accommodating a printing paper roll is formed in the printer (1). The printer (1) also includes a first paper blocking structure (12). The first paper blocking structure (12) is arranged corresponding to an end wall of the printing paper bin (11), and includes a base (121) and a plug-in rod (122). The plug-in rod (122) is rotatably connected to the base (121). The plug-in rod (122) can swing outward from the printing paper bin (11) to fit the printing paper roll onto the plug-in rod (122). The plug-in rod (122) can also swing inward from the printing paper bin (11) to support the printing paper roll upward.

2. The printer according to claim 1, wherein: The first paper blocking structure (12) can slide inside the printing paper bin (11) along the length direction of the printing paper bin (11).

3. The printer according to claim 2, wherein: A limiting rack (111) is provided on the inner side wall of the printing paper bin (11), and the limiting rack (111) is arranged along the length direction of the printing paper bin (11); a limiting block (123) is provided on the first paper stop structure (12) corresponding to the limiting rack (111), and the limiting block (123) is limited by the teeth on the limiting rack (111).

4. The printer according to claim 2, wherein: The base (121) includes an extension plate (1212), which extends along the length direction of the printing paper bin (11). Two opposite sides of the extension plate (1212) are respectively recessed inwardly and provided with a slide groove (12121). The inner side wall of the printing paper bin (11) is protruding outwardly and provided with a guide rail (112), and the slide groove (12121) is slidably matched with the guide rail (112).

5. The printer according to claim 1, wherein: The base (121) includes a base (1211), the base (1211) includes a vertical plate (12111) and two ear plates (12112) connected to the outer side wall of the vertical plate (12111) and spaced apart, the two ear plates (12112) are respectively provided with a pivot groove (121121), the plug rod (122) includes a rod body (1221) and a rod extending from the outer end of the rod body (1221). A pivot joint (1222) is formed by partially protruding outward from the top, and two opposite sides of the pivot joint (1222) are respectively provided with pivot shafts (12221) protruding outward, and the two pivot shafts (12221) are respectively rotatably connected to the two pivot grooves (121121), and the outer end surface of the rod body (1221) abuts against the vertical plate (12111) to stop the plug rod (122) from swinging toward the printing paper bin (11).

6. The printer according to claim 5, characterized in that The inner side wall of the vertical plate (12111) is recessed inward to form a clearance groove (121111), and the outer end surface of the rod body (1221) abuts against the bottom wall (B) of the clearance groove (121111).

7. The printer according to claim 5, characterized in that The rod body (1221) is provided with a plurality of grooves (12211) along its length direction.

8. The printer according to any one of claims 1 to 7, characterized in that: The inner side wall of the printing paper bin (11) is provided with length scale marks.

9. The printer according to any one of claims 1 to 7, characterized in that: It also includes a printing paper roll core, wherein the plug rod (122) is inserted into a groove in the printing paper roll core from one end of the printing paper roll core, and the printing paper roll is sleeved outside the printing paper roll core.

10. The printer according to any one of claims 1 to 7, characterized in that: It also includes a second paper stop structure (13) spaced apart from the first paper stop structure (12), and the second paper stop structure (13) is mounted on the other end wall of the printing paper bin (11).

Images