Anti-blocking device compatible with use of front-side printing paper and back-side printing paper

Abstract

The utility model belongs to the technical field of printers, and particularly discloses an anti-blocking device for compatible use of front and back printing paper, which comprises a lower cover and an upper cover, the top of the lower cover is fixedly connected with the upper cover, a lamp panel is arranged between two sides of the center of the bottom of the lower cover, an anti-pulling rotating plate is arranged between two sides in the lower cover, and the anti-pulling rotating plate is fixedly connected with the upper cover. And an anti-pulling reset torsion spring is assembled between each of the two sides of the anti-pulling rotating plate and the lower cover. According to the anti-blocking device compatible with the front and back printing paper in use, the anti-pulling rotating plate is arranged between the two sides of the interior of the lower cover, if paper blocking occurs in the device, the paper can rapidly gather energy at the paper outlet, the anti-blocking rotating plate is jacked upwards, meanwhile, ribs on the anti-blocking rotating plate can leave an anti-blocking detection optocoupler on a lamp panel, and the anti-blocking detection optocoupler can be used for detecting the front and back printing paper in the anti-blocking device compatible with the front and back printing paper. When the mainboard on the printer monitors that the signal on the anti-blocking detection optocoupler is abnormal, the mainboard responds quickly and stops printing and paper feeding in time, and the problem that a paper roll is prone to being blocked is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, and specifically relates to an anti-blocking device compatible with using front and back printing papers. Background Technique

[0002] Thermal printers are mostly required in places such as supermarket cash registers, the catering industry, bank ATMs, lockers, queuing machines, etc. for printing transaction vouchers or receipts. The printer usually has a casing or cabinet, and a thermal printer is installed inside the casing. The existing printer is composed of a paper feeding component, a printing component, a rubber roller component, a paper cutting component, and a paper output component, etc. Among them, the paper output component is installed at the end of the printing device and is the component closest to the user.

[0003] The quality of the function of the paper output component directly affects the function of the entire device and the user experience. In addition, there are two types of coatings on the thermal printing paper on the market currently, one on the front and the other on the back. Since the printing paper is in a roll form, when the paper is almost used up, the problem of the unevenness of the printing paper becomes more and more serious, which easily leads to the printing paper running into the anti-blocking paper output device and causing unnecessary paper jamming problems. It may also be blocked at the paper output port due to human or other reasons, resulting in poor printing and poor paper cutting.

[0004] Now, a new anti-blocking device compatible with using front and back printing papers is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an anti-blocking device compatible with using front and back printing papers to solve the problem of easy paper roll jamming proposed in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an anti-blocking device compatible with using front and back printing papers, including a lower cover and an upper cover. The upper cover is fixedly connected to the top of the lower cover. A lamp board is installed between the two sides at the center of the bottom of the lower cover. An anti-pull rotating plate is arranged between the two sides inside the lower cover, and anti-pull return torsion springs are respectively assembled between the two sides of the anti-pull rotating plate and the lower cover. An anti-blocking rotating plate is arranged between the two sides inside the upper cover, and anti-blocking return torsion springs are respectively assembled between the two sides of the anti-blocking rotating plate and the upper cover. A front printing paper is horizontally inserted between the lower cover and the upper cover, and a back printing paper is horizontally inserted between the anti-blocking rotating plate and the anti-pull rotating plate. An paper output port is arranged between the two sides inside the lower cover.

[0007] Preferably, the anti-blocking rotating plate is located above the anti-pull rotating plate, and the front printing paper and the back printing paper can pass through the gap formed between the anti-blocking rotating plate and the anti-pull rotating plate.

[0008] Preferably, the anti-pull reset torsion spring is symmetrically assembled on both sides of the anti-pull rotation plate, and the anti-pull reset torsion spring can guide the anti-pull rotation plate to flip up and down in the lower cover.

[0009] Preferably, the anti-blocking reset torsion spring is symmetrically assembled on both sides of the anti-blocking rotating plate, and the anti-blocking reset torsion spring can guide the anti-blocking rotating plate 8 to flip up and down in the upper cover.

[0010] Preferably, the front printing paper has a thermal-sensitive coating applied on the outside of the paper roll, and the back printing paper has a thermal-sensitive coating applied on the inside of the paper roll.

[0011] Preferably, ribs are welded to the bottom of both sides of the upper cover, an anti-blocking detection optical coupler 3 is installed on the right side of the top of the light board, and an anti-pulling detection optical coupler is installed at the center of the top of the light board.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the anti-blocking device compatible with front and back printing paper not only prevents the paper roll from getting stuck, but also can be used for front and back printing paper, and can automatically detect the entry and exit of paper;

[0013] (1) By providing an anti-pull rotating plate between the two sides of the lower cover and an anti-blocking rotating plate between the two sides of the upper cover, if paper jam occurs inside the device, the paper will quickly gather energy at the paper outlet and push up the anti-blocking rotating plate. At the same time, the ribs on the anti-blocking rotating plate will leave the anti-blocking detection optical coupler on the light board. The main board on the printer detects the abnormal signal on the anti-blocking detection optical coupler, and the main board responds quickly and terminates printing and paper feeding in time, avoiding further paper jam, hindering the normal operation of the printer, or even damaging the printer.

[0014] By inserting the front printing paper horizontally between the lower cover and the upper cover, the thermal layer of the front printing paper is applied to the outside of the paper roll, and on the contrary, the thermal layer of the back printing paper is applied to the inside of the paper roll. When the two enter and exit the paper outlet of the device, the distance between the anti-pull rotating plate and the paper outlet and the lower cover is large enough to prevent the front printing paper from drilling into or rolling into the gap between the anti-pull rotating plate and the paper outlet and the lower cover to cause paper jam. If the distance between the anti-blocking rotating plate and the paper outlet and the upper cover is large enough, the printing paper can be prevented from drilling into or rolling into the gap between the anti-blocking rotating plate and the paper outlet and the upper cover to cause paper jam, so as to maintain the smooth entry and exit of various papers in the printer housing, and facilitate the printer to use the front printing paper and the back printing paper;

[0015] (2) Ribs are welded on the bottom of both sides of the upper cover. The ribs on the anti-jamming rotating plate do not leave the anti-jamming detection optocoupler, and the signal is normal. When paper jam occurs, the ribs on the anti-jamming rotating plate leave the anti-jamming detection optocoupler, the signal is abnormal, and printing and paper feeding are stopped. After the paper jam is resolved, the anti-jamming rotating plate automatically moves down, and the ribs reset to the anti-jamming detection optocoupler. The signal is normal, and the printer can work normally. The internal paper direction can be automatically adjusted to prevent it from twisting and jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional dispersion structure of the utility model;

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

[0018] Figure 3 It is a schematic diagram of the rear-view stereoscopic structure of the rib insertion anti-blocking detection optical coupler of the utility model;

[0019] Figure 4 It is a schematic diagram of the rear-view stereoscopic structure of the rib-leaving anti-blocking detection optical coupler of the utility model;

[0020] Figure 5 This is a schematic diagram of the side cross-sectional structure of the front printing paper entering the paper outlet of the utility model;

[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the front printing paper leaving the paper outlet of the utility model from the side;

[0022] Figure 7 It is a side view cross-sectional structure diagram of the reverse printing paper entering the paper outlet of the utility model;

[0023] Figure 8 It is a schematic diagram of the side cross-sectional structure of the reverse printing paper leaving the paper outlet of the utility model.

[0024] In the figure: 1. light board; 2. anti-pull detection optical coupler; 3. anti-block detection optical coupler; 4. lower cover; 5. anti-pull reset torsion spring; 6. anti-pull rotating plate; 7. anti-block reset torsion spring; 8. anti-block rotating plate; 9. upper cover; 10. paper outlet; 11. front printing paper; 12. back printing paper; 13. ribs. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Please refer to Figure 1-8 Figure 1-8 , an embodiment provided by the present utility model: an anti-blocking device compatible with using front and back printing papers, including a lower cover 4 and an upper cover 9. The upper cover 9 is fixedly connected to the top of the lower cover 4. A lamp board 1 is installed between both sides at the center of the bottom of the lower cover 4. An anti-pull rotating plate 6 is arranged between both sides inside the lower cover 4, and anti-pull return torsion springs 5 are respectively assembled between both sides of the anti-pull rotating plate 6 and the lower cover 4. An anti-blocking rotating plate 8 is arranged between both sides inside the upper cover 9, and anti-blocking return torsion springs 7 are respectively assembled between both sides of the anti-blocking rotating plate 8 and the upper cover 9. A front printing paper 11 is horizontally inserted between the lower cover 4 and the upper cover 9, and a back printing paper 12 is horizontally inserted between the anti-blocking rotating plate 8 and the anti-pull rotating plate 6. A paper outlet 10 is arranged between both sides inside the lower cover 4;

[0027] The anti-blocking rotating plate 8 is located above the anti-pull rotating plate 6. The front printing paper 11 and the back printing paper 12 can pass through the gap formed between the anti-blocking rotating plate 8 and the anti-pull rotating plate 6. The anti-pull return torsion springs 5 are symmetrically assembled on both sides of the anti-pull rotating plate 6. The anti-pull return torsion springs 5 can guide the anti-pull rotating plate 6 to flip up and down in the lower cover 4. The anti-blocking return torsion springs 7 are symmetrically assembled on both sides of the anti-blocking rotating plate 8. The anti-blocking return torsion springs 7 can guide the anti-blocking rotating plate 8 to flip up and down in the upper cover 9;

[0028] Specifically, as shown in Figure 1 and Figure 2 Figure 2 , an anti-blocking rotating plate 8 is arranged between both sides inside the upper cover 9. If paper jams occur inside the device, the paper will quickly accumulate energy at the paper outlet 10, push up the anti-blocking rotating plate 8. At the same time, the rib 13 on the anti-blocking rotating plate 8 will leave the anti-blocking detection optocoupler 3 on the lamp board 1. The main board on the printer monitors that the signal on the anti-blocking detection optocoupler 3 is abnormal, and the main board quickly responds and terminates printing and paper feeding in a timely manner to avoid further paper jams.

[0029] The front printing paper 11 applies a thermal sensitive layer on the outer side of the paper roll, and the back printing paper 12 applies a thermal sensitive layer on the inner side of the paper roll;

[0030] Specifically, as shown in Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown in the figure, the thermal layer of the front printing paper 11 is applied to the outer side of the paper roll. On the contrary, the thermal layer of the back printing paper 12 is applied to the inner side of the paper roll. When both pass through the paper outlet 10 of this device, the distance between the anti-pulling rotating plate 6 and the paper outlet 10 and the lower cover 4 should be large enough to prevent the front printing paper 11 from getting into or being involved in the gap between the anti-pulling rotating plate 6, the paper outlet 10 and the lower cover 4, resulting in paper jams. If the distance between the anti-blocking rotating plate 8 and the paper outlet 10 and the upper cover 9 is large enough, it can prevent the printing paper from getting into or being involved in the gap between the anti-blocking rotating plate 8, the paper outlet 10 and the upper cover 9, resulting in paper jams, and maintain the smooth entry and exit of various papers into and out of the printer housing.

[0031] Ribs 13 are respectively welded to the bottom parts on both sides of the upper cover 9. The anti-blocking detection optocoupler 3 is installed on the right side of the top of the lamp board 1, and the anti-pulling detection optocoupler 2 is installed at the center of the top of the lamp board 1;

[0032] Specifically, as Figure 1 、 Figure 3 and Figure 4 shown, the rib 13 on the anti-blocking rotating plate 8 does not leave the anti-blocking detection optocoupler 3, and the signal is normal. When a paper jam occurs, the rib 13 on the anti-blocking rotating plate 8 leaves the anti-blocking detection optocoupler 3, the signal is abnormal, printing and paper feeding are stopped. After the paper jam abnormality is removed, the anti-blocking rotating plate 8 automatically moves downwards, and the rib 13 resets to the anti-blocking detection optocoupler 3, and the signal is normal, then the printer can work normally.

[0033] Working principle: When this utility model is in use, an anti-blocking rotating plate 8 is arranged between the two sides inside the upper cover 9. If a paper jam occurs inside this device, the paper will quickly accumulate energy at the paper outlet 10 and push up the anti-blocking rotating plate 8. At the same time, the rib 13 on the anti-blocking rotating plate 8 will leave the anti-blocking detection optocoupler 3 on the lamp board 1. The main board on the printer monitors that the signal on the anti-blocking detection optocoupler 3 is abnormal, and the main board quickly responds and terminates printing and paper feeding in time to avoid further paper jams. The thermal layer of the front printing paper 11 is applied to the outer side of the paper roll. On the contrary, the thermal layer of the back printing paper 12 is applied to the inner side of the paper roll. When both pass through the paper outlet 10 of this device, the distance between the anti-pulling rotating plate 6 and the paper outlet 10 and the lower cover 4 should be large enough to prevent the front printing paper 11 from getting into or being involved in the gap between the anti-pulling rotating plate 6, the paper outlet 10 and the lower cover 4, resulting in paper jams. If the distance between the anti-blocking rotating plate 8 and the paper outlet 10 and the upper cover 9 is large enough, it can prevent the printing paper from getting into or being involved in the gap between the anti-blocking rotating plate 8, the paper outlet 10 and the upper cover 9, resulting in paper jams. During this process, the rib 13 on the anti-blocking rotating plate 8 does not leave the anti-blocking detection optocoupler 3, and the signal is normal. When a paper jam occurs, the rib 13 on the anti-blocking rotating plate 8 leaves the anti-blocking detection optocoupler 3, the signal is abnormal, printing and paper feeding are stopped. After the paper jam abnormality is removed, the anti-blocking rotating plate 8 automatically moves downwards, and the rib 13 resets to the anti-blocking detection optocoupler 3, and the signal is normal.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. An anti-jamming device compatible with the use of front and back printing papers, comprising a lower cover (4) and an upper cover (9), characterized in that: The top of the lower cover (4) is fixedly connected to the upper cover (9). A lamp board (1) is installed between the two sides at the center of the bottom of the lower cover (4). An anti-pull rotating plate (6) is arranged between the two sides inside the lower cover (4), and anti-pull return torsion springs (5) are respectively assembled between the two sides of the anti-pull rotating plate (6) and the lower cover (4). An anti-blocking rotating plate (8) is arranged between the two sides inside the upper cover (9), and anti-blocking return torsion springs (7) are respectively assembled between the two sides of the anti-blocking rotating plate (8) and the upper cover (9). A front printing paper (11) is horizontally inserted between the lower cover (4) and the upper cover (9). A reverse printing paper (12) is horizontally inserted between the anti-blocking rotating plate (8) and the anti-pull rotating plate (6). An outlet (10) is arranged between the two sides inside the lower cover (4).

2. The anti-jamming device for compatibly using front and back printing papers according to claim 1, characterized in that: The anti-blocking rotating plate (8) is located above the anti-pull rotating plate (6), and the front printing paper (11) and the reverse printing paper (12) can pass through the gap formed between the anti-blocking rotating plate (8) and the anti-pull rotating plate (6).

3. The anti-jamming device for compatibly using front and back printing papers according to claim 1, wherein: The anti-pull return torsion springs (5) are symmetrically assembled on the two sides of the anti-pull rotating plate (6), and the anti-pull return torsion springs (5) can guide the anti-pull rotating plate (6) to turn up and down in the lower cover (4).

4. The anti-jamming device for compatibly using front and back printing papers according to claim 1, wherein: The anti-blocking return torsion springs (7) are symmetrically assembled on the two sides of the anti-blocking rotating plate (8), and the anti-blocking return torsion springs (7) can guide the anti-blocking rotating plate (8) to turn up and down in the upper cover (9).

5. The anti-jamming device for compatibly using front and back printing papers according to claim 1, wherein: The front printing paper (11) applies a thermal sensitive layer on the outer side of the paper roll, and the reverse printing paper (12) applies a thermal sensitive coating on the inner side of the paper roll.

6. The anti-jamming device for compatibly using front and back printing papers according to claim 1, characterized in that: Ribs (13) are respectively welded to the bottoms of the two sides of the upper cover (9). An anti-blocking detection optocoupler (3) is installed on the right side of the top of the lamp board (1), and an anti-pull detection optocoupler (2) is installed at the center of the top of the lamp board (1).

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