Paper feeding structure for reducing paper feeding slipping in low-temperature environment and thermal printer

Abstract

The utility model discloses a paper feeding structure capable of reducing paper feeding slipping in a low-temperature environment and a thermal printer, and the paper feeding structure capable of reducing paper feeding slipping in the low-temperature environment comprises a printer body, and a transmission gear set, a first paper feeding mechanism and a second paper feeding mechanism which are disposed in the printer body. The first paper feeding mechanism and the second paper feeding mechanism are arranged in the paper feeding direction. The second paper feeding mechanism comprises an upper rubber roller and a lower rubber roller; a gap for printing paper to pass through is formed between the upper rubber roller and the lower rubber roller; printing paper is clamped by the upper rubber roller and the lower rubber roller; the first paper feeding mechanism and the lower rubber roller are both connected with the transmission gear set. The transmission gear set drives the first paper feeding mechanism and drives the lower rubber roller to feed paper. According to the paper feeding structure capable of reducing paper feeding slipping in the low-temperature environment, the paper feeding slipping phenomenon of a printer in the low-temperature environment is reduced, and normal printing of the printer in the low-temperature environment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a paper feeding structure and a thermal printer for reducing paper feeding slip in a low-temperature environment. Background Art

[0002] At present, the paper feeding structure of thermal printers on the market is generally a new type of printing mechanism disclosed in a Chinese patent with the publication number CN212889519U, which realizes the paper feeding function through the structure of a single rubber roller. When the printer is used in a low-temperature environment (such as in winter in the north), the surface of some rubber rollers will become hard and smooth due to temperature changes, resulting in the phenomenon of rubber roller slip, that is, the rubber roller rotates but cannot send the paper out normally, thus causing problems with abnormal printing. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model provides a paper feeding structure and a thermal printer for reducing paper feeding slip in a low-temperature environment. Among them, the paper feeding structure for reducing paper feeding slip in a low-temperature environment includes a printer body and a transmission gear set, a first paper feeding mechanism, and a second paper feeding mechanism arranged therein;

[0004] Both the first paper feeding mechanism and the second paper feeding mechanism are arranged along the paper feeding direction;

[0005] The second paper feeding mechanism includes an upper rubber roller and a lower rubber roller; a gap for the printing paper to pass through is provided between the upper rubber roller and the lower rubber roller; the upper rubber roller and the lower rubber roller clamp the printing paper;

[0006] Both the first paper feeding mechanism and the lower rubber roller are connected to the transmission gear set;

[0007] The transmission gear set drives the first paper feeding mechanism and drives the lower rubber roller to feed paper.

[0008] Preferably, the second paper feeding mechanism further includes a limit groove, a shaft sleeve, and a compression spring;

[0009] One end of the upper rubber roller is movably connected to one end of the shaft sleeve; the other end of the shaft sleeve is connected to the compression spring; the shaft sleeve and the compression spring are arranged in a direction perpendicular to the printing surface of the printing paper;

[0010] The connection part between the upper rubber roller and the shaft sleeve is arranged in the limit groove.

[0011] Preferably, the transmission gear set includes a motor gear, a secondary gear set, a first tertiary gear, a second tertiary gear, a first rubber roller gear, a second rubber roller gear, and a motor;

[0012] The motor gear is connected to the motor rotating shaft;

[0013] The motor gear meshes with the secondary gear set; the secondary gear set meshes with the first tertiary gear and the second tertiary gear respectively;

[0014] The first tertiary gear is connected to the rotating shaft of the first paper feeding mechanism through the first rubber roller gear;

[0015] The second tertiary gear is connected to the end of the lower rubber roller through the second rubber roller gear.

[0016] Preferably, the first paper feeding mechanism includes a paper feeding rubber roller; the end of the paper feeding rubber roller is in transmission connection with the transmission gear set.

[0017] The present utility model also provides a thermal printer, which adopts the paper feeding structure for reducing paper feeding slip in a low-temperature environment as described above arbitrarily.

[0018] The paper feeding structure for reducing paper feeding slip in a low-temperature environment provided by the present utility model, on the one hand, reduces the force required for each paper feeding mechanism to drive the printing paper by adding a second paper feeding mechanism in the paper feeding direction; on the other hand, through the upper and lower rubber roller structure design of the second paper feeding mechanism, the printing paper is clamped and fed, reducing the paper feeding slip phenomenon of the printer in a low-temperature environment and ensuring the normal printing of the printer in a low-temperature environment. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the paper feeding structure for reducing paper feeding slip in a low-temperature environment provided by an embodiment of the present utility model;

[0020] Figure 2 It is a schematic diagram of the second paper feeding mechanism;

[0021] Figure 3 It is a schematic diagram of the transmission gear set;

[0022] Wherein: 10, printer body; 20, transmission gear set; 21, motor gear; 22, secondary gear set; 221, first secondary gear; 222, second secondary gear; 231, first tertiary gear; 232, second tertiary gear; 241, first rubber roller gear; 242, second rubber roller gear; 25, motor; 30, first paper feeding mechanism; 40, second paper feeding mechanism; 41, upper rubber roller; 42, lower rubber roller; 43, limit groove; 44, bushing; 45, compression spring. Detailed Embodiment

[0023] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present utility model, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative labor all belong to the protection scope of the present utility model. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments can all be obtained from commercial channels unless otherwise specified.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] An embodiment of the present utility model provides a paper feeding structure and a thermal printer for reducing paper slipping during paper feeding in a low-temperature environment. Among them, the paper feeding structure for reducing paper slipping during paper feeding in a low-temperature environment includes a printer body 10 and a transmission gear set 20, a first paper feeding mechanism 30, and a second paper feeding mechanism 40 arranged therein;

[0027] Both the first paper feeding mechanism 30 and the second paper feeding mechanism 40 are arranged along the paper feeding direction;

[0028] The second paper feeding mechanism 40 includes an upper glue roller 41 and a lower glue roller 42; a gap for the printing paper to pass through is provided between the upper glue roller 41 and the lower glue roller 42; the upper glue roller 41 and the lower glue roller 42 clamp the printing paper;

[0029] Both the first paper feeding mechanism 30 and the lower glue roller 42 are connected to the transmission gear set 20;

[0030] The transmission gear set 20 drives the first paper feeding mechanism 30 and drives the lower rubber roller 42 to feed paper. In this embodiment, the printer body 10 can adopt the structure of an existing thermal printer, and its specific structure and printing principle will not be elaborated herein.

[0031] Specific implementation, such as Figure 1 、 Figure 2 As shown, the paper feeding structure for reducing paper slipping during paper feeding in a low-temperature environment includes a printer body 10 and a transmission gear set 20, a first paper feeding mechanism 30, and a second paper feeding mechanism 40 disposed therein; the first paper feeding mechanism 30 is an existing paper feeding structure;

[0032] Both the first paper feeding mechanism 30 and the second paper feeding mechanism 40 are arranged along the paper feeding direction;

[0033] Such as Figure 2 As shown, the second paper feeding mechanism 40 includes an upper rubber roller 41 and a lower rubber roller 42; a gap for the printing paper to pass through is provided between the upper rubber roller 41 and the lower rubber roller 42; the upper rubber roller 41 and the lower rubber roller 42 clamp the printing paper;

[0034] Both the first paper feeding mechanism 30 and the lower rubber roller 42 are connected to the transmission gear set 20;

[0035] The transmission gear set 20 simultaneously drives the first paper feeding mechanism 30 and drives the lower rubber roller 42 to rotate to feed paper together.

[0036] For the paper feeding structure provided by the embodiment of the present invention for reducing paper slipping during paper feeding in a low-temperature environment, on the one hand, by adding a second paper feeding mechanism 40 in the paper feeding direction, the force required for each paper feeding mechanism to drive the printing paper is reduced; on the other hand, through the upper and lower rubber roller structure design of the second paper feeding mechanism 40, the printing paper is clamped. When feeding paper, the upper rubber roller 41 is driven to feed paper under the combined action of the rotation of the lower rubber roller 42 and the movement of the printing paper. Through the above two aspects of structural design of the embodiment of the present invention, the paper slipping phenomenon of the printer in a low-temperature environment is reduced, and the normal printing of the printer in a low-temperature environment is ensured.

[0037] Further, the second paper feeding mechanism 40 further includes a limiting groove 43, a bushing 44, and a compression spring 45;

[0038] One end of the upper rubber roller 41 is movably connected to one end of the bushing 44; the other end of the bushing 44 is connected to the compression spring 45; the bushing 44 and the compression spring 45 are arranged in a direction perpendicular to the printing surface of the printing paper;

[0039] The connection part of the upper rubber roller 41 and the bushing 44 is arranged in the limiting groove 43.

[0040] During specific implementation, such as Figure 1 、 Figure 2As shown, the second paper feeding mechanism 40 further includes a limiting groove 43, a bushing 44, and a compression spring 45;

[0041] On both ends of the glue application roller 41, the housing of the printer body 10 is provided with a limiting groove 43; both ends of the glue application roller 41 respectively pass through a bushing 44 and are rotatably connected to one end of the bushing 44; a compression spring 45 is provided at the other end of the bushing 44; the compression spring 45 is disposed in contact between the housing of the printer body 10 and the bushing 44; by pressing the bushing 44 with the compression spring 45, printing on papers of different thicknesses can be compatible; the bushing 44 and the compression spring 45 are arranged in a direction perpendicular to the printing surface of the printing paper; the connection part between the glue application roller 41 and the bushing 44 is disposed in the limiting groove 43.

[0042] During printing, the glue application roller 41 can rotate along with the movement of the lower glue application roller 42 and the printing paper, and the bottom of the bushing 44 is limited by the limiting groove 43.

[0043] Preferably, a bearing is provided between the end of the glue application roller 41 and the bushing 44.

[0044] Further, the transmission gear set 20 includes a motor gear 21, a secondary gear set 22, a first tertiary gear 231, a second tertiary gear 232, a first glue roller gear 241, a second glue roller gear 242, and a motor 25;

[0045] The motor gear 21 is connected to the rotating shaft of the motor 25;

[0046] The motor gear 21 meshes with the secondary gear set 22; the secondary gear set 22 respectively meshes with the first tertiary gear 231 and the second tertiary gear 232;

[0047] The first tertiary gear 231 is connected to the rotating shaft of the first paper feeding mechanism 30 through the first glue roller gear 241;

[0048] The second tertiary gear 232 is connected to the end of the lower glue application roller 42 through the second glue roller gear 242.

[0049] During specific implementation, as Figure 3 shown, the transmission gear set 20 includes a motor gear 21, a secondary gear set 22, a first tertiary gear 231, a second tertiary gear 232, a first glue roller gear 241, a second glue roller gear 242, and a motor 25; the secondary gear set 22 includes a first secondary gear 221 and a second secondary gear 222;

[0050] The motor gear 21 is connected to the rotating shaft of the motor 25;

[0051] The motor gear 21 meshes with the first secondary gear 221 in the secondary gear set 22; the first secondary gear 221 respectively meshes with the first tertiary gear 231 and the second tertiary gear 232 through the second secondary gear 222;

[0052] The first three-stage gear 231 is connected to the rotating shaft of the first paper feeding mechanism 30 through the first rubber roller gear 241;

[0053] The second three-stage gear 232 is connected to the end of the lower rubber roller 42 through the second rubber roller gear 242.

[0054] In this embodiment, through the gear combination design of the transmission gear set 20, it is possible to drive the first paper feeding mechanism 30 and the second paper feeding mechanism 40 simultaneously under the drive of the same motor 25, achieve the purpose that the two paper feeding mechanisms have the same transmission ratio, keep the paper feeding consistent, and improve the effect of reducing the slipping of the printing paper.

[0055] Furthermore, the first paper feeding mechanism 30 includes a paper feeding rubber roller 31; the end of the paper feeding rubber roller 31 is in transmission connection with the transmission gear set 20.

[0056] During specific implementation, as Figure 2 shown, the first paper feeding mechanism 30 includes a paper feeding rubber roller 31; the end of the paper feeding rubber roller 31 is in transmission connection with the transmission gear set 20.

[0057] Furthermore, a printing assembly is provided above the paper feeding rubber roller 31. The printing assembly can adopt the existing printing assembly structure and will not be elaborated here.

[0058] The present utility model also provides a thermal printer, which adopts the paper feeding structure for reducing the paper slipping during paper feeding in a low-temperature environment as described above.

[0059] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A paper feeding structure for reducing paper slippage in a low temperature environment, characterized in that: It comprises a printer body (10) and a transmission gear set (20) arranged therein, a first paper feeding mechanism (30), and a second paper feeding mechanism (40); The first paper feeding mechanism (30) and the second paper feeding mechanism (40) are both arranged along the paper feeding direction; The second paper feeding mechanism (40) comprises an upper glue roller (41) and a lower glue roller (42); a gap is provided between the upper glue roller (41) and the lower glue roller (42) for the printing paper to pass through; the upper glue roller (41) and the lower glue roller (42) clamp the printing paper; The first paper feeding mechanism (30) and the lower rubber roller (42) are both connected to the transmission gear set (20); The transmission gear set (20) drives the first paper feeding mechanism (30) and drives the lower rubber roller (42) to feed paper.

2. The paper feeding structure for reducing paper slippage in a low temperature environment according to claim 1, characterized in that: The second paper feeding mechanism (40) further comprises a limiting groove (43), a shaft sleeve (44) and a compression spring (45); The end of the glue roller (41) is movably connected to one end of the shaft sleeve (44); the other end of the shaft sleeve (44) is connected to the compression spring (45); the shaft sleeve (44) and the compression spring (45) are arranged in a direction perpendicular to the printing surface of the printing paper; The connection between the glue-applying roller (41) and the shaft sleeve (44) is arranged in the limiting groove (43).

3. The paper feeding structure for reducing paper slippage in a low temperature environment according to claim 1 or 2, characterized in that: The transmission gear set (20) comprises a motor gear (21), a secondary gear set (22), a first tertiary gear (231), a second tertiary gear (232), a first rubber roller gear (241), a second rubber roller gear (242) and a motor (25); The motor gear (21) is connected to the rotating shaft of the motor (25); The motor gear (21) is meshed with a secondary gear set (22); the secondary gear set (22) is respectively meshed with a first tertiary gear (231) and a second tertiary gear (232); The first three-stage gear (231) is connected to the rotating shaft of the first paper feeding mechanism (30) via the first rubber roller gear (241); The second third-stage gear (232) is connected to the end of the lower rubber roller (42) via a second rubber roller gear (242).

4. The paper feeding structure for reducing paper slippage in a low temperature environment according to claim 1, characterized in that: The first paper feeding mechanism (30) comprises a paper feeding rubber roller (31); the end of the paper feeding rubber roller (31) is drivingly connected to the transmission gear set (20).

5. A thermal printer, characterized in that: A paper feeding structure for reducing paper slippage in a low temperature environment as described in any one of claims 1 to 4 is adopted.

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