Paper jam prevention mechanism for printer

Abstract

The utility model discloses a paper jam prevention mechanism for a printer, which relates to the technical field of printers and comprises a machine body, a paper inlet, a paper storage box and a control mechanism are arranged on the side surface of the machine body, a paper feeding unit and a first limiting unit are arranged in the machine body, the paper inlet corresponds to the paper storage box, and a second limiting unit is arranged in the paper storage box. The paper feeding device has the beneficial effects that static electricity on paper and the material conveying wheel is eliminated through the static electricity removing brush, mutual attraction between the paper caused by the static electricity is effectively reduced, the paper is separated more easily during feeding, the paper clamping phenomenon caused by simultaneous feeding of multiple pieces of printing paper due to the static electricity is effectively avoided, and the paper feeding efficiency is improved. Damage to the printer caused by paper jam is reduced, and the service life and the printing quality of the printer are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to an anti-paper jam mechanism for printers. Background Art

[0002] A printer is a device that prints the results of computer calculations or intermediate results in the form of numbers, letters, symbols, and graphics that humans can recognize, in a prescribed format, on paper. It is used to print computer processing results on related media. Nowadays, printers are developing towards being light, thin, short, small, low-power, high-speed, and intelligent. Existing printer protection devices still have paper jams during printing. During the paper feeding process, the paper may tilt when entering the printer, or the paper may be adsorbed together due to static electricity, resulting in multiple sheets of paper being fed. This can cause the printer to jam for a long time, which will affect the service life of the printer.

[0003] After searching, the patent application with Chinese patent publication number CN215590293U discloses an anti-paper jam feeding mechanism for a printer, which mainly avoids paper jams caused by the failure of the rotating rod to stop in time due to long-term use of the printer through a limiting structure.

[0004] By comparing with the existing technologies in related fields, it can be seen that when the printer is feeding, the paper is transported through the feed wheel. During operation, the friction between the feed wheel and the paper will generate static electricity, causing the papers to attract each other, making it difficult to separate the papers, resulting in multiple sheets of paper being fed at a time, causing paper jams in the printer and affecting the use of the printer. Utility Model Content

[0005] The purpose of the present utility model is to provide a paper jam prevention mechanism for a printer in order to solve the above-mentioned problem.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A paper jam prevention mechanism for a printer includes a body, a paper feed port, a paper storage box, and a control mechanism are provided on the side of the body, a paper feed unit and a first limiting unit are provided inside the body, the paper feed port and the paper storage box correspond to each other, and a second limiting unit is provided inside the paper storage box;

[0008] The paper feeding unit includes a lifting assembly, a rotating shaft, and a mounting roller. The lifting assembly is arranged in the machine body and is close to the paper feeding port. A mounting bracket is installed on the lifting assembly, and a driving assembly is provided on the side of the installation. A first dust suction pipe and a second dust suction pipe are installed on the mounting bracket, and the second dust suction pipe is located above the first dust suction pipe. The rotating shaft and the mounting roller are both rotatably installed on the mounting bracket, and the rotating shaft and the mounting roller are both transmission-connected to the driving assembly. The rotating shaft and the mounting roller are located on both sides of the first dust suction pipe and the second dust suction pipe. The mounting roller is located between the paper feeding port and the rotating shaft. An anti-static brush is installed on the mounting roller, and a feed wheel is installed on the rotating shaft. The feed wheel is slidably connected to the anti-static brush. A debris suction mechanism is provided in the machine body, and the debris suction mechanism is connected to the first dust suction pipe and the second dust suction pipe.

[0009] Furthermore, the mounting roller and the rotating shaft rotate in the same direction.

[0010] Furthermore, the dust suction mechanism in the machine body includes an air guide cavity and an installation cavity, both of which are arranged in the machine body. The air guide cavity is connected to the installation cavity, the first dust suction pipe and the second dust suction pipe respectively, and an exhaust fan is installed in the installation cavity.

[0011] Furthermore, a sliding card seat is provided on the side of the machine body, and a filter box is slidably connected to the sliding card seat, and the filter box covers the installation cavity.

[0012] Furthermore, the first limiting unit in the body includes a power assembly and a first bidirectional screw. The power assembly is arranged on the side of the body. One end of the first bidirectional screw is connected to the output shaft of the power assembly, and the other end of the first bidirectional screw is rotatably connected to the body. The thread directions of the two ends of the first bidirectional screw are opposite. Two limiting plates are threadedly connected to the opposite threads at the two ends of the first bidirectional screw, and the limiting plates are slidably connected to the body.

[0013] Furthermore, the second limiting unit in the paper storage box includes a second bidirectional screw, which is rotatably installed in the paper storage box. A knob is provided at the end of the second bidirectional screw. The threads at both ends of the second bidirectional screw are in opposite directions. Two movable plates are threadedly connected to the opposite threads at both ends of the second bidirectional screw, and the two movable plates are slidably connected to the paper storage box.

[0014] Furthermore, a first distance measuring sensor is installed at the inner upper end of the paper feed port, and a second distance measuring sensor is installed on the upper surface of the mounting frame.

[0015] The beneficial effects compared with the prior art are as follows:

[0016] 1. The static electricity on the paper and the feed wheel is eliminated by the anti-static brush, which effectively reduces the mutual attraction between the papers caused by static electricity, making it easier to separate the papers during feeding, effectively avoiding paper jams caused by feeding multiple sheets of paper at the same time due to static electricity, reducing the damage to the printer caused by paper jams, and ensuring the service life of the printer and the quality of printing.

[0017] 2. The second bidirectional screw and two movable plates are used to limit the paper in the paper storage box to prevent the paper from being skewed when placed in the paper storage box, thereby reducing the skew of the paper during paper feeding caused by the tilted paper placement. The first bidirectional screw and two limiting plates are used to limit and guide the paper being printed, thereby effectively avoiding the occurrence of paper jams caused by paper tilting or deviation during printing, thereby ensuring printing efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a first isometric structural diagram of an anti-paper jam mechanism for a printer according to the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of a paper jam prevention mechanism for a printer according to the present invention;

[0021] Figure 3 The utility model is a paper jam prevention mechanism for a printer. Figure 2 A in the middle is an enlarged structural diagram;

[0022] Figure 4 This is a partial enlarged structural diagram of the body, lifting assembly, mounting roller and feed wheel connection position of a paper jam prevention mechanism for a printer of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure of the mounting frame, feed wheel and anti-static brush of a paper jam prevention mechanism for a printer of the utility model;

[0024] Figure 6 This is a schematic diagram of the front cross-sectional structure of a printer anti-jam mechanism of the utility model;

[0025] Figure 7 The utility model is a paper jam prevention mechanism for a printer. Figure 6 The enlarged structural diagram at B in the middle;

[0026] Figure 8 This is a second isometric structural diagram of an anti-paper jam mechanism for a printer according to the present invention.

[0027] The following are the descriptions of the reference numerals:

[0028] 1. Machine body; 21. Lifting assembly; 22. Mounting frame; 23. Driving assembly; 24. Rotating shaft; 25. Feed wheel; 26. Mounting roller; 27. Anti-static brush; 28. First dust suction pipe; 29. ​​Second dust suction pipe; 210. Air guide chamber; 211. Mounting chamber; 212. Exhaust fan; 213. Filter box; 214. Sliding seat; 31. Power assembly; 32. First bidirectional screw; 33. Limiting plate; 41. Second bidirectional screw; 42. Knob; 43. Movable plate; 5. Paper feed port; 6. Paper storage box; 7. Control mechanism; 8. First distance measuring sensor; 9. Second distance measuring sensor. DETAILED DESCRIPTION

[0029] like Figures 1-8 As shown, a paper jam prevention mechanism for a printer includes a body 1, a paper feed port 5, a paper storage box 6 and a control mechanism 7 are provided on the side of the body 1, a paper feed unit and a first limit unit are provided inside the body 1, the paper feed port 5 and the paper storage box 6 correspond to each other, and a second limit unit is provided inside the paper storage box 6. The control mechanism 7 works using existing technology, such as Figure 1 、 Figure 2 、 Figure 8 As shown, paper for printing is placed in the paper storage box 6, and one end of the paper is placed into the machine body 1 through the paper feed port 5. The second limiting unit limits the paper in the paper storage box 6 to prevent the paper from being tilted. The paper is transported by the paper feed unit so that the paper in the paper storage box 6 enters the machine body 1 for printing. During the printing process, the first limiting unit limits the paper to prevent the paper from being deflected during movement and causing paper jams.

[0030] The paper feeding unit includes a lifting assembly 21, a rotating shaft 24, and a mounting roller 26. The lifting assembly 21 is arranged in the machine body 1 and is close to the paper feeding port 5. A mounting frame 22 is installed on the lifting assembly 21, and a driving assembly 23 is provided on the side of the installation. A first dust suction pipe 28 and a second dust suction pipe 29 are installed on the mounting frame 22. The second dust suction pipe 29 is located above the first dust suction pipe 28. The rotating shaft 24 and the mounting roller 26 are both rotatably mounted on the mounting frame 22. The rotating shaft 24 and the mounting roller 26 are both transmission-connected to the driving assembly 23. The rotating shaft 24 and the mounting roller 26 are located between the first dust suction pipe 28 and the second On both sides of the dust suction pipe 29, the mounting roller 26 is located between the paper feed port 5 and the rotating shaft 24, the mounting roller 26 is equipped with an anti-static brush 27, the rotating shaft 24 is equipped with a feed wheel 25, the feed wheel 25 is slidably connected to the anti-static brush 27, the machine body 1 is provided with a debris suction mechanism, the debris suction mechanism is connected to the first dust suction pipe 28 and the second dust suction pipe 29, the lower surfaces of the first dust suction pipe 28 and the second dust suction pipe 29 are both provided with through holes, the lifting assembly 21 and the drive assembly 23 are electrically connected to the control mechanism 7, the anti-static brush 27, the lifting assembly 21 and the drive assembly 23 adopt existing technologies, such as Figure 2-Figure 7As shown, the mounting frame 22 is lifted and lowered by the lifting component 21, and the mounting frame 22 drives the mounting roller 26 and the rotating shaft 24 to lift and lower, thereby adjusting the height of the anti-static brush 27 and the feed wheel 25, so that the anti-static brush 27 and the feed wheel 25 can always be in contact with the printed paper, and the driving component 23 drives the mounting roller 26 and the rotating shaft 24 to rotate, and the feed wheel 25 is driven by the rotating shaft 24 to rotate, and the paper is driven by the feed wheel 25, thereby driving the paper into the machine body 1 for printing. At the same time, the anti-static brush 27 is driven to rotate by the mounting roller 26, and the anti-static brush 27 is used to assist in conveying and feeding the paper, and the anti-static brush 27 is used to clean the dust, debris and other debris on the support, so as to ensure the cleanliness of the printed paper and improve the quality of the paper during printing. The static electricity on the paper is removed by the anti-static brush 27. At the same time, when the installation roller 26 drives the anti-static brush 27 to rotate, the anti-static brush 27 contacts the feed wheel 25, and the anti-static brush 27 cleans and removes static electricity from the feed wheel 25, thereby effectively reducing the mutual attraction between the papers caused by static electricity, making it easier to separate the papers during feeding, and effectively avoiding paper jams caused by feeding multiple sheets of printing paper at the same time due to static electricity, reducing damage to the printer caused by paper jams, and ensuring the service life of the printer and the quality of printing. During the paper feeding process, the suction mechanism extracts debris, dust and other debris in the body 1 through the first dust suction pipe 28 and the second dust suction pipe 29, ensuring the cleanliness of the body 1, and avoiding debris, dust and other debris falling on the paper to affect the quality of printing. At the same time.

[0031] The mounting roller 26 and the rotating shaft 24 rotate in the same direction. Figure 4 、 Figure 5 As shown, the mounting roller 26 and the rotating shaft 24 rotate in the same direction, so that the anti-static brush 27 on the mounting roller 26 can cooperate with the feeding wheel 25 on the rotating shaft 24 to push the paper, thereby increasing the speed of paper feeding.

[0032] The suction mechanism in the body 1 includes an air guide chamber 210 and an installation chamber 211. The air guide chamber 210 and the installation chamber 211 are both arranged in the body 1. The air guide chamber 210 is connected to the installation chamber 211, the first dust suction pipe 28 and the second dust suction pipe 29 respectively. An exhaust fan 212 is installed in the installation chamber 211. The exhaust fan 212 is electrically connected to the control mechanism 7. The exhaust fan 212 works using existing technology, such as Figure 7 As shown, the exhaust fan 212 draws out the air in the first dust suction pipe 28 and the second dust suction pipe 29 through the air guide cavity 210, so that the first dust suction pipe 28 and the second dust suction pipe 29 are in a negative pressure state, so that the first dust suction pipe 28 and the second dust suction pipe 29 can extract impurities such as debris in the body 1.

[0033] The side of the body 1 is provided with a sliding card seat 214, and the sliding card seat 214 is slidably connected with a filter box 213, and the filter box 213 covers the installation cavity 211. Figure 7 、 Figure 8 As shown, the air drawn out by the exhaust fan 212 in the installation cavity 211 is filtered by the filter box 213, thereby filtering out debris and other impurities in the air to avoid pollution to the environment. The filter box 213 is easily installed and disassembled by the sliding seat 214, thereby facilitating the disposal of debris and other sundries filtered in the filter box 213.

[0034] The first limiting unit in the body 1 includes a power assembly 31 and a first bidirectional screw 32. The power assembly 31 is arranged on the side of the body 1. One end of the first bidirectional screw 32 is connected to the output shaft of the power assembly 31, and the other end of the first bidirectional screw 32 is rotatably connected to the body 1. The two ends of the first bidirectional screw 32 have opposite thread directions. Two limiting plates 33 are threadedly connected to the opposite threads at both ends of the first bidirectional screw 32. The limiting plates 33 are slidably connected to the body 1. The power assembly 31 and the control mechanism 7 are electrically connected. The power assembly 31 works using existing technologies, such as Figure 2 、 Figure 3 As shown, during the printing process, according to the width of the printing paper, the first bidirectional screw 32 is driven to rotate by the power component 31, and the two limit plates 33 are driven to move by the first bidirectional screw 32, so as to adjust the distance between the two limit plates 33. The two limit plates 33 are used to limit and guide the paper being printed, so as to avoid paper jams caused by tilting or deviation of the paper during printing, thereby ensuring the normal working efficiency of the printer.

[0035] The second limiting unit in the paper storage box 6 includes a second bidirectional screw 41, which is rotatably installed in the paper storage box 6. A knob 42 is provided at the end of the second bidirectional screw 41. The two ends of the second bidirectional screw 41 have opposite thread directions. Two movable plates 43 are threadedly connected to the opposite threads at both ends of the second bidirectional screw 41. The two movable plates 43 are slidably connected to the paper storage box 6. Figure 1 、 Figure 2 、 Figure 8 As shown, according to the width of the paper placed in the paper storage box 6, the knob 42 is turned, and the second bidirectional screw 41 is driven to rotate by the knob 42, and the two movable plates 43 are driven to move by the second bidirectional screw 41, and the distance between the two movable plates 43 is adjusted. The paper in the paper storage box 6 is limited by the two movable plates 43 to avoid the paper from being skewed when placed in the paper storage box 6, thereby reducing the deflection of the paper during paper feeding due to the tilted placement of the paper, thereby reducing the paper jam during printing.

[0036] A first distance measuring sensor 8 is mounted on the upper end of the paper feed port 5, and a second distance measuring sensor 9 is mounted on the upper surface of the mounting frame 22. The first distance measuring sensor 8, the second distance measuring sensor 9 and the control mechanism 7 are electrically connected. The first distance measuring sensor 8 and the second distance measuring sensor 9 operate using existing technologies, such as Figure 4 As shown, the thickness of the paper placed in the paper feed port 5 is monitored by the first distance measuring sensor 8, so that the height of the mounting bracket 22 can be adjusted according to the thickness of the paper, so that the anti-static brush 27 and the feed wheel 25 can be in continuous contact with the paper, and the height of the mounting bracket 22 in the machine body 1 is monitored by the second distance measuring sensor 9, thereby improving the accuracy of the height adjustment of the mounting bracket 22.

[0037] Working principle: Figure 1 、 Figure 2 、 Figure 8 As shown, the paper required for printing is placed in the paper storage box 6, and one end of the paper is placed into the body 1 through the paper inlet 5. According to the width of the paper placed in the paper storage box 6, the knob 42 is turned, and the second bidirectional screw 41 is driven to rotate by the knob 42. The second bidirectional screw 41 drives the two movable plates 43 to move, and the distance between the two movable plates 43 is adjusted. The two movable plates 43 limit the paper in the paper storage box 6 to prevent the paper from being skewed when placed in the paper storage box 6;

[0038] like Figure 4 As shown, the thickness of the paper placed in the paper feed port 5 is monitored by the first distance measuring sensor 8, and the height of the mounting frame 22 in the machine body 1 is monitored by the second distance measuring sensor 9. According to the thickness of the paper in the paper storage box 6 and the height of the mounting frame 22, the mounting frame 22 is driven to move by the lifting assembly 21, and the mounting frame 22 drives the mounting roller 26 and the rotating shaft 24 to move, thereby adjusting the height of the anti-static brush 27 and the feed wheel 25 so that the anti-static brush 27 and the feed wheel 25 contact the surface of the paper;

[0039] like Figure 2-Figure 6 As shown, the driving assembly 23 drives the installation roller 26 and the rotating shaft 24 to rotate, and the rotating shaft 24 drives the feed wheel 25 to rotate, and the feed wheel 25 drives the paper, thereby driving the paper into the machine body 1 for printing. At the same time, the installation roller 26 drives the anti-static brush 27 to rotate, and the anti-static brush 27 assists in feeding the paper, and cleans the dust, debris and other sundries on the support by the anti-static brush 27, and removes static electricity on the paper by the anti-static brush 27. At the same time, when the installation roller 26 drives the anti-static brush 27 to rotate, the anti-static brush 27 contacts the feed wheel 25, and the anti-static brush 27 cleans and removes static electricity from the feed wheel 25;

[0040] At the same time, if Figure 7As shown, the exhaust fan 212 draws out the air in the first dust suction pipe 28 and the second dust suction pipe 29 through the air guide cavity 210, so that the first dust suction pipe 28 and the second dust suction pipe 29 are in a negative pressure state, and debris, dust and other sundries in the body 1 are extracted through the first dust suction pipe 28 and the second dust suction pipe 29. Figure 7 、 Figure 8 As shown, the air extracted by the exhaust fan 212 in the installation cavity 211 is filtered through the filter box 213, thereby filtering impurities such as debris in the air;

[0041] At the same time, during the printing process, Figure 2 、 Figure 3 As shown, according to the width of the printing paper, the first bidirectional screw 32 is driven to rotate by the power component 31, and the two limit plates 33 are driven to move by the first bidirectional screw 32, so as to adjust the distance between the two limit plates 33. The two limit plates 33 are used to limit and guide the paper being printed to avoid paper deviation and paper jam.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A paper jam prevention mechanism for a printer, characterized in that: The invention comprises a machine body (1), wherein a paper feed port (5), a paper storage box (6) and a control mechanism (7) are provided on a side of the machine body (1), a paper feed unit and a first position limiting unit are provided inside the machine body (1), the paper feed port (5) and the paper storage box (6) correspond to each other, and a second position limiting unit is provided inside the paper storage box (6); The paper feeding unit comprises a lifting assembly (21), a rotating shaft (24), and a mounting roller (26). The lifting assembly (21) is arranged in the machine body (1) and close to the paper feeding port (5). A mounting frame (22) is mounted on the lifting assembly (21). A driving assembly (23) is arranged on the side of the mounting frame. A first dust suction pipe (28) and a second dust suction pipe (29) are mounted on the mounting frame (22). The second dust suction pipe (29) is located above the first dust suction pipe (28). The rotating shaft (24) and the mounting roller (26) are both rotatably mounted on the mounting frame (22). The rotating shaft (24) and the mounting roller (26) are The mounting roller (26) is connected to the driving assembly (23) in a transmission manner. The rotating shaft (24) and the mounting roller (26) are located on both sides of the first dust suction pipe (28) and the second dust suction pipe (29). The mounting roller (26) is located between the paper feed port (5) and the rotating shaft (24). A static-eliminating brush (27) is installed on the mounting roller (26). A feeding wheel (25) is installed on the rotating shaft (24). The feeding wheel (25) is slidably connected to the static-eliminating brush (27). A dust suction mechanism is provided in the machine body (1). The dust suction mechanism is connected to the first dust suction pipe (28) and the second dust suction pipe (29).

2. The anti-paper jam mechanism for a printer according to claim 1, characterized in that: The mounting roller (26) and the rotating shaft (24) rotate in the same direction.

3. The anti-paper jam mechanism for a printer according to claim 1, characterized in that: The dust suction mechanism in the machine body (1) comprises an air guide cavity (210) and an installation cavity (211); the air guide cavity (210) and the installation cavity (211) are both arranged in the machine body (1); the air guide cavity (210) is connected to the installation cavity (211), the first dust suction pipe (28) and the second dust suction pipe (29), respectively; and an exhaust fan (212) is installed in the installation cavity (211).

4. The anti-paper jam mechanism for a printer according to claim 3, characterized in that: A sliding card seat (214) is provided on the side of the machine body (1), a filter box (213) is slidably connected to the sliding card seat (214), and the filter box (213) covers the installation cavity (211).

5. The anti-paper jam mechanism for a printer according to claim 1, characterized in that: The first limiting unit in the machine body (1) includes a power assembly (31) and a first bidirectional screw (32), wherein the power assembly (31) is arranged on a side surface inside the machine body (1), one end of the first bidirectional screw (32) is connected to the output shaft of the power assembly (31), and the other end of the first bidirectional screw (32) is rotatably connected to the machine body (1), the two ends of the first bidirectional screw (32) have opposite thread directions, and two limiting plates (33) are threadedly connected to the opposite threads at the two ends of the first bidirectional screw (32), and the limiting plates (33) are slidably connected to the machine body (1).

6. The anti-paper jam mechanism for a printer according to claim 1, characterized in that: The second limiting unit in the paper storage box (6) includes a second bidirectional screw (41), which is rotatably installed in the paper storage box (6), and a knob (42) is provided at the end of the second bidirectional screw (41). The thread directions of the two ends of the second bidirectional screw (41) are opposite, and two movable plates (43) are threadedly connected to the opposite threads at the two ends of the second bidirectional screw (41), and the two movable plates (43) are slidably connected to the paper storage box (6).

7. The anti-paper jam mechanism for a printer according to claim 1, characterized in that: A first distance measuring sensor (8) is installed at the inner upper end of the paper feed port (5), and a second distance measuring sensor (9) is installed on the upper surface of the mounting frame (22).

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