Printer paper reel

Abstract

The utility model discloses a printer paper scroll, and relates to the technical field of printers. A printer paper reel comprises a paper base and an expansion plate, a bearing seat is fixedly installed at the center of the front face of the paper base, a connecting cylinder is fixedly installed at the position, close to the periphery, of the front face of the bearing seat, and moving blocks are fixedly installed at the positions, close to the front end and the rear end, of the outer surface of the connecting cylinder; first fixing seats are fixedly mounted at the positions, close to the centers, of the peripheries of the two moving blocks, first fixing shafts are fixedly mounted at the centers of the multiple first fixing seats, the outer surfaces of the multiple first fixing shafts are movably sleeved with first folding rods, the centers of the bearing seats are movably sleeved with lead screws, and the lead screws are movably sleeved with second folding rods. And a sliding table is connected to the position, close to the front end, of the outer surface of the lead screw through lead screw threads, second fixing bases are fixedly installed at the positions, close to the center, of the periphery of the sliding table, and second fixing shafts are fixedly installed at the centers of the multiple second fixing bases correspondingly.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a printer paper reel. Background Art

[0002] A printer is a computer peripheral device that converts electronic documents or images into physical output, usually by printing text or graphics on paper. Printers can output various types of documents such as text files, photos, charts, etc., and are one of the indispensable devices in modern office and home use.

[0003] Chinese utility model patent CN219546210U discloses a printer paper roll and a printer, wherein the paper roll is arranged in a printer paper roll accommodating cavity, a fixed shaft is fixed in the printer paper roll accommodating cavity, and the paper roll is mounted on the fixed shaft; the paper roll is provided with at least two groups of through holes, and channels for the fixed shaft to pass through are formed between each group of through holes; the channels of different groups of through holes are arranged crosswise; when the fixed shaft cooperates with different channels, the lengths of the paper roll along the radial direction of the fixed shaft are different to adapt to paper roll cores of different sizes; the design of the present application uses different lengths of the paper roll in different geometric dimensions to adapt to the sizes of different paper roll cores, and to achieve compatibility with multiple specifications with one part.

[0004] However, when the existing printer paper roll shaft is placed on printer paper rolls of different sizes, it cannot ensure that the printer paper roll always maintains a constant tension, and is not compatible with printer paper rolls of different sizes. Utility Model Content

[0005] The utility model provides a printer paper roll to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printer paper reel comprises a paper seat and an expansion plate, a bearing seat is fixedly installed at the center of the front of the paper seat, a connecting cylinder is fixedly installed at the front of the bearing seat near the periphery, moving blocks are fixedly installed on the outer surface of the connecting cylinder near the front and rear ends, first fixed seats are fixedly installed at the four peripheries of the two moving blocks near the center, a first fixed shaft is fixedly installed at the center of a plurality of the first fixed seats, a first folding rod is movably sleeved on the outer surfaces of a plurality of the first fixed shafts, a screw rod is movably sleeved at the center of the bearing seat, a slide is connected to the outer surface of the screw rod near the front end through a screw rod thread, a second fixed seat is fixedly installed at the periphery of the slide near the center, a second fixed shaft is fixedly installed at the center of a plurality of the second fixed seats, a second folding rod is movably sleeved on the outer surfaces of a plurality of the second fixed shafts, and a handle is fixedly installed on the front of the screw rod.

[0007] Furthermore, one end of each of the first folding rods and the second folding rods away from the first fixed axis and the second fixed axis is movably sleeved with a first connecting axis.

[0008] Furthermore, there are multiple expansion plates, and the inner left and right side walls of the multiple expansion plates are respectively fixedly connected to the left and right sides of the multiple first connecting axes, and the multiple first folding rods and the multiple second folding rods are respectively located inside the multiple expansion plates at one end away from the first fixed axis and the second fixed axis.

[0009] Furthermore, ball bearings are fixedly installed on the inner wall of the connecting tube near the front and rear ends, the rear end of the screw rod passes through the centers of the two ball bearings and is connected to the bearing seats, and the rear end of the screw rod is located inside the connecting tube.

[0010] Furthermore, the centers of the slide and the moving block are on the same horizontal line.

[0011] Furthermore, the front end surface of the screw rod is located outside the connecting tube, and the screw rod and the center of the connecting tube are on the same horizontal line.

[0012] Furthermore, the plurality of expansion boards are distributed in a circular shape.

[0013] Furthermore, the paper holder can rotate along with the rotation of the printer paper roll.

[0014] Compared with the prior art, the utility model provides a printer paper roll, which has the following beneficial effects:

[0015] 1. The printer paper roll shaft, by arranging a wire search rod, a slide, a first folding rod, a second folding plate, an extension plate and a moving block, can ensure that the printer paper roll always maintains a constant tension, no matter how the diameter of the printer paper roll changes; this is very important to ensure the consistency of printing quality, avoiding printing misalignment or paper damage caused by loose or over-tensioned printer paper roll; because the printer paper roll tension can be accurately controlled, the waste of printer paper during the printing process is reduced, and the stable printer paper roll tension means that the printer can print at a higher speed without reducing the printing quality due to loose or slipping printing paper.

[0016] 2. The printer paper reel, by arranging a ball bearing, can enhance the stability of the screw during rotation, and because the ball bearing can provide a rolling surface with lower friction, it can reduce power loss and help improve the efficiency of the entire structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a position relationship diagram of the screw rod and the connecting tube of the utility model;

[0019] Figure 3 This is a position relationship diagram of the second folding rod and the expansion plate of the utility model;

[0020] Figure 4 It is an enlarged view of point A of the utility model;

[0021] Figure 5 It is an enlarged view of point B of the present utility model.

[0022] In the figure: 1. paper seat; 2. bearing seat; 3. connecting tube; 4. expansion plate; 5. handle; 6. ball bearing; 7. first fixed seat; 8. screw rod; 9. first connecting shaft; 10. moving block; 11. first fixed shaft; 12. first folding rod; 13. slide; 14. second fixed seat; 15. second fixed shaft; 16. second folding rod. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 The utility model discloses a printer paper reel, comprising a paper seat 1 and an expansion plate 4, a bearing seat 2 is fixedly installed at the center of the front of the paper seat 1, a connecting cylinder 3 is fixedly installed at the front of the bearing seat 2 near the periphery, a moving block 10 is fixedly installed on the outer surface of the connecting cylinder 3 near the front and rear ends, a first fixed seat 7 is fixedly installed near the center of the four peripheries of the two moving blocks 10, a first fixed shaft 11 is fixedly installed at the center of a plurality of first fixed seats 7, a first folding rod 12 is movably sleeved on the outer surfaces of the plurality of first fixed shafts 11, a screw rod 8 is movably sleeved at the center of the bearing seat 2, a slide 13 is threadedly connected to the outer surface of the screw rod 8 near the front end through the screw rod 8, a second fixed seat 14 is fixedly installed at the periphery of the slide 13 near the center, a second fixed shaft 15 is fixedly installed at the center of the plurality of second fixed seats 14, a second folding rod 16 is movably sleeved on the outer surfaces of the plurality of second fixed shafts 15, and a handle 5 is fixedly installed on the front of the screw rod 8.

[0025] Specifically, one end of each of the plurality of first folding rods 12 and the plurality of second folding rods 16 that are away from the first fixed axis 11 and the second fixed axis 15 is movably sleeved with the first connecting axis 9 .

[0026] Specifically, there are multiple expansion plates 4, and the inner left and right side walls of the multiple expansion plates 4 are respectively fixedly connected to the left and right sides of the multiple first connecting axes 9, and the multiple first folding rods 12 and the multiple second folding rods 16 are respectively located inside the multiple expansion plates 4 with one end away from the first fixed axis 11 and the second fixed axis 15.

[0027] Specifically, ball bearings 6 are fixedly installed on the inner wall of the connecting tube 3 near the front and rear ends. The rear end of the screw rod 8 passes through the centers of the two ball bearings 6 and is connected to the bearing seat 2. The rear end of the screw rod 8 is located inside the connecting tube 3.

[0028] Specifically, the center of the slide table 13 and the moving block 10 are on the same horizontal line.

[0029] Specifically, the front end surface of the screw rod 8 is located outside the connecting tube 3 , and the screw rod 8 and the center of the connecting tube 3 are on the same horizontal line.

[0030] Specifically, the plurality of expansion boards 4 are distributed in a circular shape.

[0031] Specifically, the paper holder 1 rotates along with the rotation of the printer paper roll.

[0032] In this embodiment, when the printer paper roll rotates as the printing paper is pulled out, the paper holder 1 also rotates accordingly.

[0033] When in use, the inside of the printer paper roll to be installed is sleeved on the circularly distributed expansion plate 4, and the handle 5 is turned to drive the screw rod 8 to rotate, thereby driving the slider to move to the rear end. Because the connection between the first connecting shaft 9 and the expansion plate 4 is fixedly connected, when the slider is driven to move, it can only drive the second folding rod 16 to move one end close to the slide 13. By moving one end of the second folding rod 16, the expansion plate 4 is pushed to expand outward. When the expansion plate 4 expands outward, one end of the first folding rod 12 is extended outward until the surface of the expansion plate 4 is tightly attached to the inside of the installed printer paper roll, thereby tensioning the inside of the installed printer paper roll. If the printer paper roll needs to be removed, the handle 5 is turned to move the slider to the front end, driving the expansion plate 4 to shrink toward the connecting tube 3, thereby taking out the printer paper roll.

[0034] In summary, the printer paper roll, by providing the search rod 8, the slide 13, the first folding rod 12, the second folding plate, the expansion plate 4 and the moving block 10, can ensure that the printer paper roll always maintains a constant tension regardless of how the diameter of the printer paper roll changes; this is crucial to ensure the consistency of printing quality, and avoids printing misalignment or paper damage caused by loose or excessive tension of the printer paper roll; because the printer paper roll tension can be accurately controlled, the waste of printer paper during the printing process is reduced, and the stable printer paper roll tension means that the printer can print at a higher speed without causing a decrease in print quality due to loose or slipping printing paper; by providing the ball bearing 6, the stability of the screw 8 during rotation can be enhanced, and because the ball bearing 6 can provide a rolling surface with lower friction, power loss is reduced, and it helps to improve the efficiency of the entire structure.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printer paper reel, comprising a paper holder (1) and an extension plate (4), characterized in that: A bearing seat (2) is fixedly mounted at the center of the front face of the paper seat (1); a connecting tube (3) is fixedly mounted at a position near the periphery of the front face of the bearing seat (2); moving blocks (10) are fixedly mounted at positions near the front and rear ends of the outer surface of the connecting tube (3); first fixed seats (7) are fixedly mounted at positions near the center of the four peripheries of the two moving blocks (10); first fixed shafts (11) are fixedly mounted at the centers of the plurality of first fixed seats (7); and first folding shafts (11) are movably sleeved on the outer surfaces of the plurality of first fixed shafts (11). A rod (12) is provided, a screw rod (8) is movably sleeved at the center of the bearing seat (2), a slide table (13) is threadedly connected to the outer surface of the screw rod (8) near the front end through the screw rod (8), a second fixed seat (14) is fixedly installed at a position near the center of the periphery of the slide table (13), a plurality of second fixed seats (14) are fixedly installed at the center, a second fixed shaft (15) is movably sleeved at the outer surface of a plurality of second fixed shafts (15), and a handle (5) is fixedly installed on the front side of the screw rod (8).

2. A printer paper roll according to claim 1, characterized in that: The first folding rods (12) and the second folding rods (16) are each movably sleeved with a first connecting shaft (9) at one end away from the first fixed shaft (11) and the second fixed shaft (15).

3. A printer paper roll according to claim 1, characterized in that: There are a plurality of expansion plates (4), and the inner left and right side walls of the plurality of expansion plates (4) are respectively fixedly connected to the left and right sides of a plurality of first connecting shafts (9), and one end of the plurality of first folding rods (12) and the plurality of second folding rods (16) that are respectively away from the first fixed shaft (11) and the second fixed shaft (15) are respectively located inside the plurality of expansion plates (4).

4. A printer paper roll according to claim 1, characterized in that: Ball bearings (6) are fixedly mounted on the inner wall of the connecting tube (3) near the front and rear ends, the rear end of the screw rod (8) passes through the centers of the two ball bearings (6) and is connected to the bearing seat (2), and the rear end of the screw rod (8) is located inside the connecting tube (3).

5. The printer paper roll according to claim 1, characterized in that: The slide table (13) and the center of the moving block (10) are on the same horizontal line.

6. A printer paper roll according to claim 1, characterized in that: The front end surface of the screw rod (8) is located outside the connecting tube (3), and the screw rod (8) and the center of the connecting tube (3) are located on the same horizontal line.

7. The printer paper roll according to claim 1, characterized in that: The plurality of expansion plates (4) are distributed in a circle.

8. The printer paper roll according to claim 1, characterized in that: The paper holder (1) rotates along with the rotation of the printer paper roll.

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