Printing medium positioning device of printer

Abstract

The utility model provides a printing medium positioning device of a printer. Comprising an outer shell, roller shafts which are symmetrically distributed and correspond to each other are arranged in the outer shell, a limiting shell which is penetrated by the roller shafts and arranged in one side of the outer shell is arranged on one side of the roller shafts, and a movable plate corresponding to the roller shafts is arranged at the end, away from the interior of the outer shell, of the limiting shell. The printing medium positioning device solves the problems that in the prior art, a printing medium positioning device can only limit a medium when the medium enters, and deviation and sliding are prone to occurring in roller shafts, the set of roller shafts penetrating through the limiting shell on the outer shell is arranged, the length of the roller shafts in a printing area is changed by means of movement of the whole roller shafts relative to the limiting shell, and the printing efficiency is improved. And meanwhile, by means of sliding of the movable plate on the limiting shell, the positioning effect on the roller shaft can be achieved.

Description

Technical Field

[0001] The utility model provides a printer, belongs to the technical field of printer equipment, and particularly relates to a printer printing medium positioning device. Background Art

[0002] The printer print media positioning device is an important component in the printer. Its main function is to ensure the accurate position of the print media during the printing process. Generally speaking, by positioning the media, the printer can print in the correct position, thus avoiding the problem of the printed image or text deviating from the expected position. The traditional printer media positioning device includes a paper clamping device, a sensor positioning, a media roller, etc.

[0003] Most of the existing printing medium positioning devices are equipped with a slidable limiter on the paper input port to limit the position of the paper when it enters. However, when the internal roller rotates and drives the paper forward, the paper may shift in position, causing the printed image to be tilted or stretched, which is inconvenient to use. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the embodiments of the present application provide a printer print medium positioning device, which solves the problem that the print medium positioning device in the prior art can only limit the medium when it enters and is prone to offset sliding in the roller. By setting a group of rollers that penetrate the upper limit shell on the outer shell, the length of the roller in the printing area is changed by the movement of the entire roller relative to the limit shell, thereby limiting the medium. At the same time, the roller can be positioned by sliding a movable plate on the limit shell.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a printer print medium positioning device, including an outer shell, wherein the interior of the outer shell is provided with symmetrically distributed and mutually corresponding rollers, one side of the roller is provided with a limiting shell penetrated by the roller and placed inside one side of the outer shell, and the end of the limiting shell away from the interior of the outer shell is provided with a movable plate corresponding to the roller.

[0006] Preferably: the interior of the outer shell is provided with an inclined surface placed on one side of the roller shaft, and the other side of the outer shell is provided with a sliding groove, and the interior of the sliding groove is provided with a sliding member corresponding to the sliding groove and passing through the sliding groove, and the penetration position of the sliding member is the plate body on the side of the sliding groove close to the roller shaft.

[0007] Preferably, the sliding member is connected to an L-shaped support plate disposed below the roller shaft on one side thereof close to the roller shaft, the roller shaft is movably connected to the support plate, and transmission gears corresponding to each other are sleeved on one side of the roller shaft close to the vertical plate body of the support plate.

[0008] Preferably, the other end of the roller shaft is provided with a support base connected to the support plate, and the upper part of the support base is connected to a driving motor connected to the roller shaft.

[0009] Preferably: a slot corresponding to the movable plate is connected to one side of the limiting shell close to the movable plate, a T-shaped connector symmetrically distributed and placed inside the movable plate is provided above the slot, and a plurality of evenly distributed grooves corresponding to the movable plate are provided on the roller shaft.

[0010] Preferably, the interior of the limiting shell is provided with a blocking plate symmetrically distributed above the transverse plate body of the support plate.

[0011] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0012] The utility model sets a group of rollers penetrating the upper limit shell of the outer shell body, and changes the length of the rollers in the printing area by the movement of the rollers as a whole relative to the limit shell, thereby limiting the medium, and at the same time, the movable plate slides on the limit shell to realize the positioning of the rollers.

[0013] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of a printing medium positioning device of a printer according to the utility model;

[0015] Figure 2 This is a cross-sectional view of a printing medium positioning device for a printer according to the utility model;

[0016] Figure 3 A cross-sectional view of a printing medium positioning device of a printer according to the utility model from another perspective;

[0017] Figure 4 It is a three-dimensional schematic diagram of the roller part of a printing medium positioning device of a printer according to the utility model;

[0018] Figure 5 The utility model is a schematic diagram of a movable plate of a printing medium positioning device of a printer.

[0019] As shown in the figure:

[0020] 1. Outer shell;

[0021] 11. Limiting shell; 12. Inclined surface; 13. Sliding groove; 14. Sliding member; 15. Slot; 16. Connecting member; 17. Blocking plate;

[0022] 2. Roller;

[0023] 21. movable plate; 22. supporting plate; 23. transmission gear; 24. supporting base; 25. driving motor; 26. groove. DETAILED DESCRIPTION

[0024] 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.

[0025] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention are only for the purpose of describing specific implementation methods and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] like Figure 1 and Figure 4 As shown, the utility model provides a printer print medium positioning device, including an outer shell 1, symmetrically distributed and mutually corresponding roller shafts 2 located inside the outer shell 1, a limiting shell 11 is provided on one side of the roller shaft 2 and is penetrated by the roller shaft 2 and is located inside one side of the outer shell 1, a movable plate 21 corresponding to the roller shaft 2 is provided on the end of the limiting shell 11 away from the inner part of the outer shell 1, a card slot 15 corresponding to the movable plate 21 is connected to the side of the limiting shell 11 close to the movable plate 21, a T-shaped connecting piece 16 symmetrically distributed and located inside the movable plate 21 is provided above the card slot 15, a plurality of evenly distributed grooves 26 corresponding to the movable plate 21 are provided on the roller shaft 2, and a blocking plate 17 symmetrically distributed and located above the transverse plate body of the support plate 22 is provided inside the limiting shell 11.

[0028] In this embodiment, a group of rollers are set up to pass through the upper limit shell on the outer shell. The length of the rollers in the printing area is changed by the movement of the rollers as a whole relative to the limit shell, thereby limiting the medium. At the same time, the rollers can be positioned by sliding the movable plate on the limit shell.

[0029] like Figure 2 and Figure 3 As shown, the interior of the outer shell 1 is provided with an inclined surface 12 placed on one side of the roller shaft 2, and a sliding groove 13 is provided on the other side of the outer shell 1. A sliding member 14 corresponding to the sliding groove 13 and penetrating the sliding groove 13 is provided inside the sliding groove 13. The penetration position of the sliding member 14 is the plate body of the sliding groove 13 close to the side of the roller shaft 2. The side of the sliding member 14 close to the roller shaft 2 is connected to an L-shaped support plate 22 placed under the roller shaft 2. The roller shaft 2 is movably connected to the support plate 22. Transmission gears 23 corresponding to each other are sleeved on one side of the vertical plate body of the roller shaft 2 close to the support plate 22. A support base 24 connected to the support plate 22 is provided at the other end of the roller shaft 2, and a drive motor 25 connected to the roller shaft 2 is connected above the support base 24.

[0030] In this embodiment, the sliding slider 14 moves in the sliding groove 13, and the sliding slider 14 passes through one side of the sliding groove 13 and is connected to a support plate 22, so that the sliding slider 14 can drive the support plate 22 to move as a whole, so that the roller 2 movably connected on the support plate 22 moves as a whole through the limiting shell 11, and changes the length of the roller 2 placed in the printing area; the support plate 22 is limited in sliding position by the blocking plate 17 inside the limiting shell 11, and a limiting plate corresponding to the vertical plate body of the support plate 22 is provided on one side of the limiting shell 11. The opening between the limiting plates only allows the roller to pass through, and cooperates with the support plate 2 to limit the displacement of the roller 2.

[0031] When in use, first open the printer housing 1, and then adjust the roller fixing position and the movement of the movable plate 21 to ensure that the roller 2 is aligned with the print medium. Figure 1 Next, confirm the coordination of the movable plate, the slot 15 and the connector 16 to achieve accurate positioning of the roller shaft. Figure 2 Check the groove 26 on the roller to limit the position of the print media, see Figure 3 Then, ensure that the sliding member 14 can move smoothly in the sliding groove 13 and drive the movement of the roller shaft, see Figure 4 At the same time, the transmission gear 23 and the drive motor 25 provide power, see Figure 5 Finally, the printer housing 1 is closed and the printer is now ready for use by adjusting the positions of the rollers and the movable plate to ensure accurate positioning of the printing medium.

[0032] Although the present invention has been disclosed as above in terms of preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. A printing medium positioning device for a printer, comprising an outer shell (1), characterized in that: The outer shell (1) is provided with rollers (2) which are symmetrically distributed and correspond to each other, one side of the rollers (2) is provided with a limit shell (11) which is penetrated by the rollers (2) and is disposed inside one side of the outer shell (1), and one end of the limit shell (11) which is away from the inside of the outer shell (1) is provided with a movable plate (21) corresponding to the rollers (2).

2. A printer print medium positioning device according to claim 1, characterized in that: The outer shell (1) is provided with an inclined surface (12) disposed on one side of the roller shaft (2), and the outer shell (1) is provided with a sliding groove (13) on the other side. The sliding groove (13) is provided with a sliding member (14) corresponding to the sliding groove (13) and penetrating the sliding groove (13). The penetrating position of the sliding member (14) is a plate body on the side of the sliding groove (13) close to the roller shaft (2).

3. A printer print medium positioning device according to claim 2, characterized in that: The side of the sliding member (14) close to the roller shaft (2) is connected to an L-shaped support plate (22) disposed below the roller shaft (2); the roller shaft (2) and the support plate (22) are movably connected; and a side of the roller shaft (2) close to the vertical plate body of the support plate (22) is sleeved with corresponding transmission gears (23).

4. A printer print medium positioning device according to claim 3, characterized in that: The other end of the roller shaft (2) is provided with a support base (24) connected to the support plate (22), and the upper part of the support base (24) is connected to a drive motor (25) connected to the roller shaft (2).

5. A printer print medium positioning device according to claim 1, characterized in that: A slot (15) corresponding to the movable plate (21) is connected to a side of the limiting shell (11) close to the movable plate (21); a T-shaped connecting piece (16) symmetrically distributed and placed inside the movable plate (21) is provided above the slot (15); and a plurality of evenly distributed grooves (26) corresponding to the movable plate (21) are provided on the roller shaft (2).

6. A printer print medium positioning device according to claim 1, characterized in that: The interior of the limiting shell (11) is provided with a blocking plate (17) which is symmetrically distributed above the transverse plate body of the support plate (22).

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