Paper feeding structure of printer

Abstract

The utility model discloses a paper feeding structure of a printer, which belongs to the technical field of printers and comprises a paper feeding supporting plate, a cavity is arranged on the outer side wall of the paper feeding supporting plate, a clamping groove is arranged on the outer side wall of the paper feeding supporting plate, a sliding groove is arranged on the outer wall of one side of the paper feeding supporting plate inside the cavity, and the paper feeding supporting plate is connected with a sliding block in a sliding mode through the sliding groove. And sliding rods are fixedly connected to the outer side walls of the sliding blocks. According to the paper feeding structure of the printer, through cooperative use of the moving block, the abutting plate, the limiting rod, the first tension spring, the overturning plate, the pressing plate and the extension plate, the heights of the pressing plate and the extension plate can be conveniently adjusted according to the thickness of paper on the paper feeding supporting plate, so that the pressing plate and the extension plate are always attached to the top paper; and meanwhile, the pressing plate and the extension plate are used for smoothing the paper entering the printer, so that the risk that the paper is bent and deformed in the paper feeding process due to the fact that the abutting pressure of the abutting plate on the paper is large and the pressure of the paper feeding roller on the paper is not uniformly distributed is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of printer technology, specifically, it relates to a printer paper feeding structure. Background Technology

[0002] As a core component of modern office equipment, printers rely on a stable paper delivery system for their function. However, the diversity of paper sizes and environmental factors (such as humidity and static electricity) often lead to insufficient stacking stability, which in turn causes problems such as paper jams and multiple pages feeding.

[0003] According to the public announcement (CN219669614U), a printer paper tray with an adjustable structure is disclosed. This technology discloses "a support base, a paper tray rotatably connected to the upper end of the support base, third slide grooves on both sides of the upper end of the paper tray, multiple slots on the rear inner walls of the two third slide grooves, sliders slidably connected inside the two third slide grooves, baffles on the upper end of the two sliders, second slide grooves on the upper end of the two sliders, springs on the front inner walls of the two second slide grooves, and locking blocks connected to the other ends of the two springs, etc. This technology has the technical effect of allowing the two sliders and baffles to be adjusted within the two third slide grooves to accommodate different sizes of paper, limiting the paper size and preventing it from being easily skewed after being placed on the paper tray, thus preventing the paper from entering the printer and causing a paper jam."

[0004] However, in the aforementioned comparative documents, the spacing between the two side baffles is adjusted by sliding the slider along the groove and fixed by springs and locking blocks. Since the baffles need to directly contact the sides of the paper, the coefficient of friction between the baffles and the sides of the paper is high. The rotational pulling force of the feed roller on the paper will cause the front end of the paper to bend or the edge to wrinkle due to the uneven resistance on both sides. At the same time, when there are many sheets of paper, the stacked weight and interlayer friction can partially offset the resistance of the baffles, and the risk of deformation is low. However, when there are few sheets of paper, the local pressure of the baffles on a single sheet of paper is concentrated. In addition, the uneven distribution of the pulling force of the feed roller can easily cause the paper to enter the printing channel at an angle, causing paper jams.

[0005] To address the aforementioned issues, this application proposes a printer paper feeding structure. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a printer paper feeding structure to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A printer paper feeding structure includes a paper feeding support plate. A cavity is formed in the outer wall of the paper feeding support plate, and a slot is formed in the outer wall of the paper feeding support plate. A sliding groove is formed on the outer wall of the paper feeding support plate located inside the cavity. A slider is slidably connected to the paper feeding support plate via the sliding groove. A sliding rod is fixedly connected to the outer wall of the slider. A moving block is slidably connected to the outer wall of the sliding rod. A spring is fixedly connected to the end of the sliding rod near the moving block, and the end of the spring away from the sliding rod is fixedly connected to the moving block. An abutment plate is fixedly connected to the outer wall of the moving block. A limit rod is slidably connected to the inner bottom of the abutment plate. A flip plate is rotatably connected to the top of the limit rod. A first tension spring is fixedly connected to the inner bottom of the abutment plate. The end of the first tension spring away from the abutment plate is fixedly connected to the top of the limit rod. A pressure plate is fixedly connected to the end of the flip plate away from the limit rod, and an extension plate is slidably connected to the inner wall of the pressure plate.

[0009] Preferably, the end of the flip plate away from the limiting rod has a circular hole, and the bottom of the end of the contact plate away from the limiting rod is fixedly connected to a second tension spring. The top of the second tension spring is fixedly connected to a locking post. The locking post is adapted to the circular hole on the flip plate. By setting the circular hole, the cooperation of the second tension spring and the locking post makes it easy to limit the rotation angle of the flip plate and prevent the flip plate from detaching from the interior of the contact plate during use and causing rotation.

[0010] Preferably, the outer side wall of the contact plate is provided with a moving groove, the inner bottom of the contact plate is fixedly connected to a limiting post, the outer side wall of the locking post is fixedly connected to an operating rod, the inner side wall of the operating rod is slidably connected to the outer side wall of the limiting post, and the operating rod is located inside the moving groove. By setting the operating rod, the limiting post, and the moving groove, it is convenient for the operator to adjust the position of the locking post, thereby facilitating the operator to install and disassemble the flip plate and the locking post.

[0011] Preferably, the outer wall of the paper feed support plate is provided with a storage groove, and a connecting rod is fixedly connected to the outer wall of the paper feed support plate located inside the storage groove. The paper feed support plate is slidably connected to a sliding plate through the connecting rod. A support spring is fixedly connected to the outer wall of the sliding plate. The end of the support spring away from the sliding plate is fixedly connected to the outer wall of the paper feed support plate. By setting up the storage groove, connecting rod, sliding plate, and support spring, the paper can be easily supported, and the bending phenomenon of the paper is avoided when it is placed on the paper feed support plate.

[0012] Preferably, the outer wall of the paper feed support plate has a square groove, and a sliding column is fixedly connected to the outer wall of the paper feed support plate located inside the square groove. An elastic pin is slidably connected to the outer wall of the sliding column, and one end of the elastic pin is fixedly connected to the inner wall of the paper feed support plate. A locking block is fixedly connected to the outer wall of the slide plate near the square groove, and a locking block is fixedly connected to the end of the elastic pin near the slide plate. By setting the sliding column, elastic pin, locking block, and locking block, the position of the slide plate can be restricted, thereby facilitating the storage of the slide plate when not in use.

[0013] Preferably, the end of the paper feed support plate away from the slide plate is rotatably connected to an installation plate. An adjustment groove is provided on the outer wall of the side of the installation plate near the paper feed support plate. An adjustment plate is rotatably connected to one side of the paper feed support plate. The end of the adjustment plate away from the paper feed support plate is adapted to the adjustment groove. By setting the installation plate, adjustment groove, and adjustment plate, it is convenient to adjust the angle of the paper feed support plate.

[0014] In summary, the technical effects and advantages of this utility model are as follows: The paper feeding structure of this printer, through the coordinated use of a moving block, abutment plate, limiting rod, first tension spring, flip plate, pressure plate, and extension plate, facilitates the adjustment of the height of the pressure plate and extension plate according to the thickness of the paper on the paper feeding support plate, so that the pressure plate and extension plate always adhere to the top paper. At the same time, the pressure plate and extension plate smooth the paper entering the printer, thereby avoiding the risk of paper bending and deformation during the feeding process caused by excessive pressure from the abutment plate on the paper and uneven pressure distribution of the paper feeding roller.

[0015] The combination of square grooves, sliding pillars, elastic pins, clips, and locking blocks makes it easy to limit the movement of the stored skateboard, thereby reducing space occupation and preventing collisions or breakage of the skateboard during handling or transfer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the slide and related parts of this utility model;

[0018] Figure 3 This is a schematic diagram of the contact plate and related parts of this utility model;

[0019] Figure 4 This is a schematic diagram of the flip plate and related parts of this utility model;

[0020] Figure 5 This is a schematic diagram of the operating lever and related parts of this utility model;

[0021] Figure 6This is a schematic diagram of the structure of the skateboard and related parts of this utility model.

[0022] In the picture:

[0023] 1. Paper feed support plate; 2. Cavity; 3. Slot; 4. Slide groove; 5. Slider; 6. Slide rod; 7. Moving block; 8. Spring; 9. Contact plate; 10. Limiting rod; 11. First tension spring; 12. Flip plate; 13. Pressure plate; 14. Extension plate; 15. Second tension spring; 16. Locking post; 17. Operating rod; 18. Limiting post; 19. Moving groove; 20. Storage groove; 21. Connecting rod; 22. Slide plate; 23. Support spring; 24. Square groove; 25. Slide column; 26. Elastic pin; 27. Locking block; 28. Locking block; 29. ​​Mounting plate; 30. Adjustment groove; 31. Adjustment plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-4A printer paper feeding structure includes a paper feeding support plate 1. Two cavities 2 are provided on the outer wall of the paper feeding support plate 1, symmetrically distributed about one side of the paper feeding support plate 1. Taking one cavity 2 on one side of the paper feeding support plate 1 as an example, a slot 3 with a serrated opening is provided on the outer wall of the paper feeding support plate 1 near the cavity 2. A sliding groove 4 is provided on the outer wall of the paper feeding support plate 1 inside the cavity 2. A slider 5 is slidably connected to the paper feeding support plate 1 via the sliding groove 4. A sliding rod 6 is fixedly connected to the outer wall of the slider 5, and a moving block 7 is slidably connected to the outer wall of the sliding rod 6. The movable block 7 is located inside the cavity 2. A spring 8 is fixedly connected to the end of the slide rod 6 near the movable block 7. The spring 8 is located inside the cavity 2, and the end of the spring 8 away from the slide rod 6 is fixedly connected to the movable block 7. An abutment plate 9 is fixedly connected to the outer wall of the movable block 7. The outer wall of the abutment plate 9 is curved, and the curved sides of the two abutment plates 9 are distributed opposite each other. When the paper placed on the top of the paper feed support plate 1 is abutted and limited, the curved side of the abutment plate 9 is tangent to the side of the paper to reduce the contact area between the abutment plate 9 and the side of the paper, thereby reducing the friction between the abutment plate 9 and the paper. The operator can face the slide 4. The contact plate 9 is pushed in a certain direction. At this time, the contact plate 9 drives the moving block 7 to move, and the moving block 7 compresses the spring 8. Furthermore, the connection between the moving block 7 and the contact plate 9 is disengaged from the locking of the slot 3, which makes it easier for the operator to adjust the distance between the two contact plates 9 to accommodate different sizes of paper. The bottom of the contact plate 9 has a round hole that passes through the bottom of the contact plate 9 and the paper feed support plate 1. The inner bottom of the contact plate 9 is slidably connected to a limit rod 10. The bottom of the limit rod 10 is located inside the round hole. The top of the limit rod 10 is rotatably connected to a flip plate 12, which is located inside the contact plate 9. A first tension spring 11 is fixedly connected to the inner bottom of the 9. The end of the first tension spring 11 away from the contact plate 9 is fixedly connected to the top of the limiting rod 10. When sufficient paper is placed on the paper feed support plate 1, the inner side wall of the contact plate 9 abuts and limits the outer wall of the flip plate 12 near the limiting rod 10, so as to prevent the flip plate 12 from rotating due to the elastic pull of the first tension spring 11 itself during use. A pressure plate 13 is fixedly connected to the end of the flip plate 12 away from the limiting rod 10. An extension plate 14 is slidably connected to the inner side wall of the pressure plate 13. The extension plate 14 is located inside the pressure plate 13, and the bottom of the pressure plate 13 and the extension plate 14 are on the same horizontal plane.

[0026] In use, the operator can push the abutment plate 9 towards the slide 4. At this time, the abutment plate 9 drives the moving block 7 to move, and the moving block 7 squeezes the spring 8, releasing the position restriction of the slot 3 on the abutment plate 9. The position of the abutment plate 9 can be further adjusted by sliding along the slide 4 to adapt to the width of different papers. After adjusting the distance between the two abutment plates 9, the flip plate 12 is pulled to the outside of the abutment plate 9 towards the top of the abutment plate 9. Since one end of the flip plate 12 is rotatably connected to the limiting rod 10, when the flip plate 12 moves to the outside of the abutment plate 9, the inner side wall of the abutment plate 9 cannot limit the flip plate 12. The operator can rotate the flip plate 12 along the connection point between the limiting rod 10 and the flip plate 12, thereby rotating the pressure plate 13 to the paper feed support. The vertical position of plate 1 facilitates the operator's placement of the paper between the two contact plates 9. Since the outer walls of both contact plates 9 are curved, and the curved sides of the two contact plates 9 are placed opposite each other, the two sides of the paper contact the curved sides of the two contact plates 9 respectively. Thus, the contact line between the paper and the two contact plates 9 is tangential to the arc. Compared with flat contact, the friction generated by the curved contact during the movement of the paper is smaller. After the paper is placed, the pressure plate 13 is rotated to a position parallel to the paper. At this time, the angle of the flip plate 12 is limited by the contact plates 9, and under the action of the elastic force of the limit rod 10, the pressure plate 13 is always in contact with the top of the printing paper to avoid deformation of the paper during the feeding process.

[0027] Reference Figure 3 and Figure 5 The flip plate 12 has a round hole at one end away from the limiting rod 10. The bottom of the contact plate 9 away from the limiting rod 10 is fixedly connected to a second tension spring 15. The top of the second tension spring 15 is fixedly connected to a locking post 16. The locking post 16 is adapted to the round hole on the flip plate 12. When the pressure plate 13 is adjusted to a position parallel to the paper, the operator can insert the locking post 16 into the round hole on the top of the flip plate 12 so that the second tension spring 15 can further restrict the flip plate 12, preventing the flip plate 12 from separating from the contact plate 9 due to a large amount of paper or its thickness, and thus preventing the flip plate 12 from rotating after it separates from the contact plate 9.

[0028] Reference Figure 3 and Figure 5The outer wall of the contact plate 9 is provided with a moving groove 19, which is located on the side of the contact plate 9 away from the limiting rod 10. The inner bottom of the contact plate 9 is fixedly connected to a limiting post 18, which is located inside the moving groove 19. The outer wall of the locking post 16 is fixedly connected to an operating rod 17, which is slidably connected to the outer wall of the limiting post 18. The operating rod 17 is located inside the moving groove 19, and one end of the operating rod 17 is located outside the contact plate 9, so that the operator can adjust the position of the locking post 16 and restrict the position of the locking post 16 when locking the locking post 16 with the flip plate 12.

[0029] Reference Figure 5 The outer wall of the paper feed support plate 1 is provided with a storage groove 20. The storage groove 20 is located at the end of the paper feed support plate 1 away from the cavity 2. A connecting rod 21 is fixedly connected to the outer wall of the paper feed support plate 1 inside the storage groove 20. There are two connecting rods 21, which are located at the two ends of the storage groove 20 respectively. The two connecting rods 21 are symmetrically distributed about the central axis of the paper feed support plate 1. The paper feed support plate 1 is slidably connected to a slide plate 22 through the two connecting rods 21. A support spring 23 is fixedly connected to the outer wall of the slide plate 22. There are two support springs 23. The two support springs 23 are respectively wrapped around the outer wall of the two connecting rods 21. The ends of the two support springs 23 away from the slide plate 22 are fixedly connected to the outer wall of the paper feed support plate 1 to support the slide plate 22. This prevents the slide plate 22 from retracting into the storage groove 20 due to gravity when the angle between the paper feed support plate 1 and the printer body changes, thereby preventing the paper placed on the paper feed support plate 1 from bending and deforming.

[0030] Reference Figure 5 The outer wall of the paper feed support plate 1 has a square groove 24. There are two square grooves 24, and the positions of the two square grooves 24 correspond to the positions of the two connecting rods 21. Taking one of the square grooves 24 as an example, a sliding column 25 is fixedly connected to the outer wall of the paper feed support plate 1 inside the square groove 24. An elastic pin 26 is slidably connected to the outer wall of the sliding column 25. One end of the elastic pin 26 is fixedly connected to the inner wall of the paper feed support plate 1. A locking block 28 is fixedly connected to the outer wall of the slide plate 22 near the square groove 24. The elastic pin 26 is close to the slide plate 28. One end of the slide plate 22 is fixedly connected to a locking block 27. When the slide plate 22 is retracted into the storage slot 20, the locking block 27 is pushed out by the elastic force of the elastic pin 26 and comes into contact with the outer wall of the locking block 28 set on the slide plate 22. Since the sliding column 25 restricts the position of the elastic pin 26, the slide plate 22 moves out of the storage slot 20 under the action of the support spring 23. The locking block 27 resists and restricts the locking block 28, thereby restricting the position of the slide plate 22 so as to facilitate the storage and transportation of the device.

[0031] Reference Figure 1 and Figure 2 A mounting plate 29 is rotatably connected to the end of the paper feed support plate 1 away from the slide plate 22. An adjustment groove 30 is provided on the outer wall of the mounting plate 29 near the paper feed support plate 1. An adjustment plate 31 is rotatably connected to one side of the paper feed support plate 1. The end of the adjustment plate 31 away from the paper feed support plate 1 is adapted to the adjustment groove 30. The mounting plate 29 is fixedly connected to the printer body. When the operator needs to adjust the angle between the paper feed support plate 1 and the printer body, the paper feed support plate 1 can be rotated, and the adjustment plate 31 can be rotated at the same time. The end of the adjustment plate 31 away from the paper feed support plate 1 is engaged with the mounting plate 29 through the adjustment groove 30, thereby limiting the angle of the paper feed support plate 1.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A printer paper feeding structure, comprising a paper feeding support plate (1), characterized in that, The outer wall of the paper feed support plate (1) has a cavity (2) and a slot (3). The outer wall of the paper feed support plate (1) located inside the cavity (2) has a sliding groove (4). The paper feed support plate (1) is slidably connected to a slider (5) through the sliding groove (4). The outer wall of the slider (5) is fixedly connected to a sliding rod (6). The outer wall of the sliding rod (6) is slidably connected to a moving block (7). The end of the sliding rod (6) near the moving block (7) is fixedly connected to a spring (8). The end of the spring (8) away from the sliding rod (6) is connected to the moving block. (7) Fixed connection: an abutment plate (9) is fixedly connected to the outer wall of the movable block (7), a limit rod (10) is slidably connected to the inner bottom of the abutment plate (9), a flip plate (12) is rotatably connected to the top of the limit rod (10), a first tension spring (11) is fixedly connected to the inner bottom of the abutment plate (9), the end of the first tension spring (11) away from the abutment plate (9) is fixedly connected to the top of the limit rod (10), a pressure plate (13) is fixedly connected to the end of the flip plate (12) away from the limit rod (10), and an extension plate (14) is slidably connected to the inner side wall of the pressure plate (13).

2. The printer paper feeding structure according to claim 1, characterized in that, The flip plate (12) has a round hole at one end away from the limiting rod (10), and the bottom of the contact plate (9) away from the limiting rod (10) is fixedly connected to a second tension spring (15). The top of the second tension spring (15) is fixedly connected to a locking post (16), and the locking post (16) is adapted to the round hole opened on the flip plate (12).

3. The printer paper feeding structure according to claim 2, characterized in that, The outer side wall of the contact plate (9) is provided with a moving groove (19). The inner bottom of the contact plate (9) is fixedly connected to a limiting post (18). The outer side wall of the locking post (16) is fixedly connected to an operating rod (17). The inner side wall of the operating rod (17) is slidably connected to the outer side wall of the limiting post (18). The operating rod (17) is located inside the moving groove (19).

4. The printer paper feeding structure according to claim 1, characterized in that, The outer wall of the paper feed support plate (1) is provided with a storage groove (20). A connecting rod (21) is fixedly connected to the outer wall of the paper feed support plate (1) located inside the storage groove (20). A sliding plate (22) is slidably connected to the paper feed support plate (1) through the connecting rod (21). A support spring (23) is fixedly connected to the outer wall of the sliding plate (22). The end of the support spring (23) away from the sliding plate (22) is fixedly connected to the outer wall of the paper feed support plate (1).

5. A printer paper feeding structure according to claim 4, characterized in that, The outer wall of the paper feed support plate (1) is provided with a square groove (24). A sliding column (25) is fixedly connected to the outer wall of the paper feed support plate (1) located inside the square groove (24). An elastic pin (26) is slidably connected to the outer wall of the sliding column (25). One end of the elastic pin (26) is fixedly connected to the inner wall of the paper feed support plate (1). A locking block (28) is fixedly connected to the outer wall of the slide plate (22) near the square groove (24). A locking block (27) is fixedly connected to the end of the elastic pin (26) near the slide plate (22).

6. The printer paper feeding structure according to claim 1, characterized in that, The paper feed support plate (1) is rotatably connected to an installation plate (29) at one end away from the slide plate (22). An adjustment groove (30) is provided on the outer wall of the installation plate (29) near the paper feed support plate (1). An adjustment plate (31) is rotatably connected to one side of the paper feed support plate (1). The end of the adjustment plate (31) away from the paper feed support plate (1) is adapted to the adjustment groove (30).

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