Anti-pulling device for compatible use of front-side and back-side thermosensitive coating printing paper

Abstract

The utility model relates to the field of thermal printers, and discloses an anti-pulling device for compatible use of front and back thermal-sensitive coating printing paper, which comprises a paper outlet upper cover and a paper outlet lower cover, the paper outlet upper cover is assembled at the top end of the paper outlet lower cover, an anti-blocking rotating plate is arranged at the upper part in the paper outlet lower cover, and the anti-blocking rotating plate is connected with the paper outlet lower cover. An anti-pulling rotating plate is installed on the lower portion of the interior of the paper outlet lower cover, a rotating shaft is movably assembled at the position, where the paper outlet lower cover is installed, of the anti-pulling rotating plate, an anti-pulling reset torsion spring is installed on one side of the rotating shaft, ribs are fixed to the bottom end of the anti-pulling rotating plate, and a lamp panel is installed on the lower portion of the interior of the paper outlet lower cover. And an anti-pulling detection optocoupler is arranged in the lamp panel. According to the anti-pulling device for compatible use of the front-side and back-side thermosensitive coating printing paper, through the arrangement of the anti-pulling rotating plate and the automatic anti-pulling design, the front-side and back-side coatings are compatible, and the problem that after the printing paper is manually pulled apart, the printed content is incomplete, and consequently the content is lost is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal printers, in particular to an anti-pull device compatible with front-side and back-side thermal-coated printing papers. Background Art

[0002] Thermal printers are commonly used at supermarket checkout counters, restaurants, bank ATMs, lockers, and queuing machines to print transaction receipts or receipts. These printers typically consist of a housing or cabinet housing a thermal printer. Existing printers consist of a paper feed assembly, a printing assembly, a rubber roller assembly, a paper cutter assembly, and a paper output assembly. The paper output assembly is located at the end of the printer, closest to the user. Its performance directly impacts the overall functionality of the device and the user experience.

[0003] Currently, thermal paper on the market is coated on both the front and back sides. Since the paper comes in a roll, as it nears the end of its life, the problem of unevenness (curling) in the paper becomes increasingly severe. This can easily cause the paper to slip into the anti-pull-out mechanism, causing unnecessary paper ejection problems. Therefore, without a new anti-pull-out mechanism, any attempt to pull on the paper can cause it to break, resulting in incomplete printouts. If the paper is pulled, continuing to print after it has been pulled can easily cause a paper jam, requiring specialized maintenance personnel to address. This significantly increases labor costs and the printer's operating and maintenance costs.

[0004] Therefore, there is a need for an anti-pull device that is compatible with both front and back thermal-coated printing papers to solve the above technical defects. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-pull device compatible with both front and back thermal coated printing papers, so as to solve the problem raised in the above background technology that the printed content is incomplete and missing due to the printing paper being manually pulled apart.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-pull device that is compatible with the use of front-side and back-side thermal-coated printing paper, comprising a paper outlet upper cover and a paper outlet lower cover, the top of the paper outlet lower cover is equipped with the paper outlet upper cover, the upper part of the paper outlet lower cover is equipped with an anti-blocking rotating plate, the lower part of the paper outlet lower cover is equipped with an anti-pull rotating plate, the anti-pull rotating plate is movably equipped with a rotating shaft at the installation position of the paper outlet lower cover, an anti-pull reset torsion spring is installed on one side of the rotating shaft, a rib is fixed to the bottom end of the anti-pull rotating plate, a light board is installed at the lower part of the paper outlet lower cover, and an anti-pull detection optical coupler is arranged inside the light board.

[0007] Preferably, the paper outlet lower cover and the paper outlet upper cover are assembled to form a paper outlet channel.

[0008] Preferably, the light board is horizontally installed inside the lower cover of the paper outlet, and the light board is fixed to the lower cover of the paper outlet by bolts.

[0009] Preferably, an anti-blocking rotating plate is provided above the anti-pull rotating plate, and the anti-blocking rotating plate is assembled inside the paper outlet upper cover.

[0010] Preferably, the size of the rib matches the anti-pull detection optical coupler, and the anti-pull rotation plate is located above the light board.

[0011] Preferably, the paper outlet lower cover and the paper outlet upper cover are connected by bolts after being clamped and fixed.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the anti-pull device compatible with both front-side and back-side thermal coated printing paper not only achieves compatibility with both-side coated thermal printing paper, solves the problem of incomplete printed content resulting in missing content due to manual pulling of the printing paper, solves the problem of paper jams caused by the pulling of the printing paper, and reduces labor maintenance costs;

[0013] (1) By providing an anti-pull rotating plate, ribs, anti-pull detection optical coupler, rotating shaft, and anti-pull reset torsion spring, regardless of whether it is the front thermal coating or the back thermal coating, that is, regardless of whether it is the front printing paper or the back printing paper, in normal working state, the ribs on the anti-pull rotating plate do not block the anti-pull detection optical coupler, the optical coupler signal is normal, and the printer works normally. When the printing paper is manually pulled, the anti-pull rotating plate rotates around the rotating shaft under the action of the tension of the printing paper, and the ribs on the anti-pull rotating plate block the anti-pull detection optical coupler. The anti-pull detection optical coupler signal is abnormal, and the printer immediately stops printing and feeding paper. At the same time, the automatic cutter of the printer starts to cut the printing paper, and then the anti-pull rotating plate is reset under the action of the anti-pull reset torsion spring, and the optical coupler signal returns to normal. When the cut printing paper is taken out, the printer automatically reprints a bill, so that the integrity of the bill content can be guaranteed. Through the automatic anti-pull design, the front and back coatings are compatible, and the problem of incomplete printing content resulting from the loss of content due to manual pulling of the printing paper is solved.

[0014] (2) By providing an anti-pull rotating plate and a lower cover for the paper outlet, the distance between the anti-pull rotating plate and the lower cover for the paper outlet is large enough to prevent the printing paper from getting into or rolling into the gap between the anti-pull rotating plate and the lower cover for the paper outlet, causing paper jams. When the paper is about to run out, the printing paper will not continue to curl and deform, thus solving the problem of the printing paper being pulled apart and causing paper jams.

[0015] (3) By setting up a light board, an anti-pull detection optical coupler, and an anti-blocking rotating plate, the anti-pull device can detect quickly and start and stop automatically, reducing printing failures, thereby reducing the labor cost caused by the need for professional maintenance and the cost of using and maintaining the printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an explosion diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the anti-pull rotating plate of the utility model in a normal state;

[0018] Figure 3 This is a schematic diagram of the anti-pull rotating plate of the utility model being pulled down;

[0019] Figure 4 This is a side structural schematic diagram of the anti-pull rotating plate of the present utility model.

[0020] In the figure: 1. Paper outlet upper cover; 2. Anti-blocking rotating plate; 3. Anti-pull rotating plate; 4. Anti-pull reset torsion spring; 5. Paper outlet lower cover; 6. Light board; 7. Anti-pull detection optical coupler; 8. Rotating shaft; 9. Rib. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The utility model provides an embodiment: an anti-pull device compatible with front-side and back-side thermal-coated printing paper, comprising a paper outlet upper cover 1 and a paper outlet lower cover 5, the paper outlet upper cover 1 being mounted on the top of the paper outlet lower cover 5, an anti-blocking rotating plate 2 being mounted on the top of the paper outlet lower cover 5, an anti-pull rotating plate 3 being mounted on the bottom of the paper outlet lower cover 5, the anti-pull rotating plate 3 being movably mounted with a rotating shaft 8 at the mounting position of the paper outlet lower cover 5, an anti-pull reset torsion spring 4 being mounted on one side of the rotating shaft 8, a rib 9 being fixed to the bottom end of the anti-pull rotating plate 3, a light board 6 being mounted on the bottom of the paper outlet lower cover 5, and an anti-pull detection optical coupler 7 being arranged inside the light board 6;

[0023] Specifically, if Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, no matter whether the front thermal coating is on the outside of the paper roll or the back thermal coating is on the inside of the paper roll, that is, no matter whether it is the front printing paper or the back printing paper, in normal working state, the printing paper is not pulled manually, the ribs 9 on the anti-pull rotating plate 3 do not block the anti-pull detection optical coupler 7, the optical coupler signal is normal, and the printer works normally. When the printing paper is pulled manually, the anti-pull rotating plate 3 rotates around the rotating shaft 8 under the action of the tensioning force of the printing paper, and the ribs 9 on the anti-pull rotating plate 3 block the anti-pull detection optical coupler 7. The anti-pull detection optical coupler 7 signal is abnormal, and the printer immediately stops printing and feeding paper. At the same time, the automatic cutter of the printer starts to cut off the printing paper, and then the anti-pull rotating plate 3 is reset under the action of the anti-pull reset torsion spring 4, and the optical coupler signal returns to normal. When the cut printing paper is taken out, the printer automatically reprints a bill, thereby ensuring the integrity of the bill content.

[0024] The paper outlet lower cover 5 and the paper outlet upper cover 1 are assembled to form a paper outlet passage. The paper outlet lower cover 5 and the paper outlet upper cover 1 are fixed by snapping together and then connected by bolts.

[0025] Specifically, if Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the distance between the anti-pull rotating plate 3 and the lower cover 5 of the paper outlet is large enough to prevent the printing paper, especially when using front printing paper, from drilling into or rolling into the gap between the anti-pull rotating plate 3 and the lower cover 5 of the paper outlet and causing paper jams. When the paper is about to run out, the printing paper will not continue to curl and deform.

[0026] The light board 6 is installed horizontally inside the paper outlet lower cover 5. The light board 6 is fixed to the paper outlet lower cover 5 by bolts. The anti-blocking rotating plate 2 is provided above the anti-pull rotating plate 3. The anti-blocking rotating plate 2 is assembled inside the paper outlet upper cover 1. The size of the rib 9 matches the anti-pull detection optical coupler 7. The anti-pull rotating plate 3 is located above the light board 6.

[0027] Specifically, if Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the anti-pull device has fast detection and automatic start and stop, which reduces printing failures, thereby reducing labor costs caused by the need for professional maintenance and the use and maintenance costs of the printer.

[0028] Working principle: In normal working state, the printing paper is not pulled manually, the ribs 9 on the anti-pull rotating plate 3 do not block the anti-pull detection optocoupler 7, the optocoupler signal is normal, and the printer works normally. When the printing paper is pulled manually, the anti-pull rotating plate 3 rotates around the rotating shaft 8 under the action of the printing paper tension, and the ribs 9 on the anti-pull rotating plate 3 block the anti-pull detection optocoupler 7. The anti-pull detection optocoupler 7 signal is abnormal, and the printer immediately stops printing and feeding paper. At the same time, the automatic cutter of the printer starts to cut the printing paper, and then the anti-pull rotating plate 3 is reset under the action of the anti-pull reset torsion spring 4, and the optocoupler signal returns to normal. When the cut printing paper is taken out, the printer automatically reprints a copy of the bill, so that the integrity of the bill content can be ensured. The distance between the anti-pull rotating plate 3 and the paper outlet lower cover 5 is large enough to prevent the printing paper, especially when using front printing paper, from drilling into or rolling into the gap between the anti-pull rotating plate 3 and the paper outlet lower cover 5 to cause paper jams. When the paper is about to run out, the printing paper will not continue to curl and deform.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An anti-pull device compatible with front and back thermal-coated printing paper, comprising an upper cover (1) and a lower cover (5) for a paper outlet, characterized in that: The top of the paper outlet lower cover (5) is equipped with a paper outlet upper cover (1), an anti-blocking rotating plate (2) is installed on the upper part of the paper outlet lower cover (5), an anti-pull rotating plate (3) is installed on the lower part of the paper outlet lower cover (5), the anti-pull rotating plate (3) is movably equipped with a rotating shaft (8) at the installation position of the paper outlet lower cover (5), an anti-pull reset torsion spring (4) is installed on one side of the rotating shaft (8), a rib (9) is fixed on the bottom end of the anti-pull rotating plate (3), a light board (6) is installed on the lower part of the paper outlet lower cover (5), and an anti-pull detection optical coupler (7) is provided inside the light board (6).

2. The anti-pull device for printing paper with thermal coating on both the front and back sides according to claim 1, characterized in that: The paper outlet lower cover (5) and the paper outlet upper cover (1) are assembled to form a paper outlet channel.

3. The anti-pull device compatible with both front-side and back-side thermally coated printing paper according to claim 1, characterized in that: The light board (6) is horizontally installed inside the paper outlet lower cover (5), and the light board (6) is fixed to the paper outlet lower cover (5) by bolts.

4. The anti-pull device compatible with both front-side and back-side thermally coated printing paper according to claim 1, characterized in that: An anti-blocking rotating plate (2) is provided above the anti-pull rotating plate (3), and the anti-blocking rotating plate (2) is assembled inside the paper outlet upper cover (1).

5. The anti-pull device compatible with both front-side and back-side thermally coated printing papers according to claim 1, characterized in that: The size of the rib (9) matches the anti-pull detection optical coupler (7), and the anti-pull rotation plate (3) is located above the light board (6).

6. The anti-pull device compatible with both front-side and back-side thermally coated printing paper according to claim 1, characterized in that: The paper outlet lower cover (5) and the paper outlet upper cover (1) are connected by bolts after being clamped and fixed.

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