Printer casing convenient for paper feeding

Abstract

The utility model discloses a printer casing convenient for paper feeding, which comprises a casing body, an upper cover is fixedly arranged at the upper part of the casing body, a paper guide part is downwards and obliquely arranged in the middle of the upper cover, and a printing guide roller protective cover is movably arranged at the front side of the upper cover; the printing paper guide mechanism comprises a group of mounting shafts rotationally mounted on two sides of the lower part of the paper guide part, the mounting shafts are fixedly connected with corresponding fixed guide wheels respectively, the upper parts of the fixed guide wheels are upwards connected with corresponding pressing guide wheels through elastic pieces respectively, and the upper parts of the pressing guide wheels are fixedly connected with iron limiting plates; and electromagnets located on the outer sides of the corresponding iron limiting plates are arranged on the two sides of the guide roller protective cover correspondingly. According to the utility model, not only can the printing paper be effectively prevented from position offset in the paper feeding process, but also the two sides of the printing paper can be pulled and tensioned in the printing paper feeding process, so that the problem of curling of a printing paper roll in external paper feeding is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printer casing technical field, concretely points to a printer casing with paper feeding convenience. BACKGROUND

[0002] In order to improve the portable effect of printer, small heat-sensitive printer is widely used. In order to further improve the miniaturization and portable effect of heat-sensitive printer, heat-sensitive printer without paper storage compartment is used. By setting the paper guide slope on the upper cover of the casing body, the external printing paper roll can be directly guided to the printing end of the printer for printing.

[0003] In order to ensure the stability of the printer, the existing printer sets the paper guide plate on the upper cover of the casing body, so as to prevent the position deviation of the external paper feeding. Although this effectively solves the problem of printing paper deviation, the printing paper roll itself has a certain curling property, and the printer head of the heat-sensitive printer has a relatively large clamping force on the printer, which causes the printing paper to easily wrinkle and deform during printing. In severe cases, even the printing paper jam problem occurs, which is very troublesome.

[0004] Therefore, the design of a printer casing with paper feeding convenience that can effectively prevent the position deviation of the printing paper during paper feeding and can pull and tension the two sides of the printing paper during printing paper feeding to overcome the curling problem of the printing paper roll of the external paper feeding is the research purpose of the utility model. UTILITY MODEL CONTENT

[0005] In view of the technical problems existing in the prior art, the utility model provides a printer casing with paper feeding convenience, which can effectively solve the technical problems existing in the prior art.

[0006] The technical scheme of the utility model is:

[0007] A printer casing with paper feeding convenience, comprising

[0008] A casing body, a corresponding upper cover is fixedly installed on the upper part of the casing body, a corresponding paper guide part is downwardly and obliquely arranged on the middle part of the upper cover, a corresponding printing guide roller protective cover is movably installed on the front side of the upper cover, and the inner side of the printing guide roller protective cover and the paper guide part are spaced apart.

[0009] The printing paper guiding mechanism comprises a group of mounting shafts rotatably mounted on both sides of the lower part of the paper guiding part, a corresponding fixed guide wheel is fixedly connected to each of the mounting shafts, a corresponding pressing guide wheel is upwardly connected to the upper part of each of the fixed guide wheels through a corresponding elastic member, an iron limiting plate is fixedly connected to the upper part of each of the pressing guide wheels, an electromagnet is arranged on the outside of each of the iron limiting plates on both sides of the guide roller protective cover, and the electromagnet is electrified to form adsorption on the outside of the iron limiting plate, so that the inside of the pressing guide wheel is downwardly inclined to cooperate with the fixed guide wheel to clamp the printing paper.

[0010] The upper surface of the paper guiding part is provided with a plurality of corresponding paper guiding protrusions which are upwardly and spacedly arranged, and the upper end surface of each of the fixed guide wheels is located on the downside of the paper guiding protrusion.

[0011] Both sides of the guide roller protective cover are downwardly folded and provided with corresponding limiting guide holes, and the upper cover is fixedly connected with guide blocks which are clamped into the limiting guide holes.

[0012] The opposite sides of the casing body and the guide roller protective cover are respectively provided with corresponding accommodation grooves, and the accommodation grooves arranged on the casing body and the guide roller protective cover cooperate to form corresponding paper outlets.

[0013] The end part of the accommodation groove of the guide roller protective cover is arranged in a sawtooth shape.

[0014] The upper sides of the paper guiding part are respectively provided with guide plates for preventing the printing paper from deviating.

[0015] The elastic member is made of a flexible rubber ring, and the end part of the elastic member is fixedly connected to the fixed guide wheel and the pressing guide wheel.

[0016] The paper guiding protrusion is integrally formed and fixedly connected to the paper guiding part of the upper cover.

[0017] The utility model discloses the advantages of:

[0018] 1) the utility model adds a group of mounting shafts fixedly connected with fixed guide wheels, and the pressing guide wheel is arranged on the upper part of the fixed guide wheel through the elastic member; most importantly, the iron limiting plate is fixedly connected to the upper part of the pressing guide wheel, and the electromagnet is arranged on the outside of each of the iron limiting plates on both sides of the guide roller protective cover. During printing, the electromagnet is controlled to be electrified to form adsorption on the outside of the iron limiting plate, so that the inside of the pressing guide wheel is downwardly inclined, and cooperates with the fixed guide wheel to clamp the printing paper. With the advance of the printing paper, the mounting shaft rotates, and the pressing guide wheel and the fixed guide wheel rotate and continuously pull the printing paper outward on both sides. Thus, the printing paper on both sides can be pulled and tensioned during the printing paper feeding process, so as to overcome the curling problem of the printing paper roll existing in the external paper feeding, and effectively ensure the smoothness of printing.

[0019] 2) The upper surface of the paper guide portion of the present invention is provided with a number of corresponding paper guide ridges that protrude upward at intervals. The upper end surfaces of the fixed guide wheels are respectively located on the lower sides of the paper guide ridges, so that when the clamping guide wheel and the fixed guide wheel pull the printing paper, the middle parts can be slightly pushed upward, thereby unfolding the printing paper, thereby effectively further overcoming the curling problem of the printing paper roll existing in external paper feeding, and further effectively ensuring the smoothness of printing.

[0020] 3) The utility model is provided with guide plates on both sides of the upper part of the paper guide, which prevent the printing paper from being horizontally offset, thereby further effectively ensuring the smoothness of printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 This is an exploded view of the parts of the present utility model.

[0023] Figure 3 It is a structural diagram of the upper cover and guide roller protective cover.

[0024] Figure 4 It is a structural diagram of the printing paper guide mechanism.

[0025] In the accompanying drawings: casing body 1, upper cover 2, paper guide part 201, printing guide roller protective cover 3, printing paper guide mechanism 4, mounting shaft 401, fixed guide wheel 402, elastic member 403, pressing guide wheel 404, iron limit plate 405, electromagnet 406, paper guide protrusion 5, limit guide hole 6, guide block 7, paper outlet 8, guide plate 9. DETAILED DESCRIPTION

[0026] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the following embodiments and accompanying drawings:

[0027] refer to Figures 1-4 , a printer casing for facilitating paper feeding, comprising

[0028] A housing body 1, wherein a corresponding upper cover 2 is fixedly mounted on the upper portion of the housing body 1, a corresponding paper guide portion 201 is provided in a downwardly inclined middle portion of the upper cover 2, and a corresponding printing guide roller protective cover 3 is movably mounted on the front side of the upper cover 2, with the inner side of the printing guide roller protective cover 3 being spaced apart from the paper guide portion 201;

[0029] The printing paper guiding mechanism 4 comprises a group of mounting shafts 401 rotatably mounted on both sides of the lower part of the paper guiding part 201, a corresponding fixed guide wheel 402 is fixedly connected to each of the mounting shafts 401, the upper part of the fixed guide wheel 402 is connected to a corresponding pressing guide wheel 404 through a corresponding elastic member 403, the upper part of the pressing guide wheel 404 is fixedly connected to an iron limiting plate 405, and electromagnets 406 are arranged on the two sides of the guide roller protective cover 3 and located outside the corresponding iron limiting plate 405; the electromagnets 406 are powered to form adsorption on the outside of the iron limiting plate 405, so that the inside of the pressing guide wheel 404 is inclined downward and cooperates with the fixed guide wheel 402 to clamp the printing paper.

[0030] The utility model adds a group of mounting shafts 401 fixedly connected with the fixed guide wheel 402, and the pressing guide wheel 404 is installed on the upper part of the fixed guide wheel 402 through the elastic member 403; most importantly, the iron limiting plate 405 is fixedly connected to the upper part of the pressing guide wheel 404, and the electromagnets 406 are arranged on the two sides of the guide roller protective cover 3 and located outside the corresponding iron limiting plate 405. During printing, the electromagnets 406 are powered to form adsorption on the outside of the iron limiting plate 405, so that the inside of the pressing guide wheel 404 is inclined downward and cooperates with the fixed guide wheel 402 to clamp the printing paper, and with the advance of the printing paper, the mounting shaft 401 rotates, the pressing guide wheel 404 and the fixed guide wheel 402 rotate and continuously pull the printing paper outward on both sides. Thus, the printing paper on both sides can be pulled and tensioned during the printing paper feeding process, so as to overcome the curling problem of the printing paper roll existing in the external paper feeding, and effectively ensure the smoothness of printing.

[0031] The upper surface of the paper guiding part 201 is provided with a plurality of corresponding paper guiding convex edges 5 which are upwardly protruded at intervals, and the upper end surface of the fixed guide wheel 402 is located on the downside of the paper guiding convex edge 5, so that the middle part of the pressing guide wheel 404 and the fixed guide wheel 402 can be slightly lifted upward when pulling the printing paper, thereby unfolding the printing paper, effectively further overcoming the curling problem of the printing paper roll existing in the external paper feeding, and further effectively ensuring the smoothness of printing.

[0032] The two sides of the guide roller protective cover 3 are downwardly folded and provided with corresponding limiting guide holes 6, and the two sides of the upper cover 2 are fixedly connected with guide blocks 7 clamped into the limiting guide holes 6.

[0033] The opposite sides of the casing body 1 and the guide roller protective cover 3 are respectively provided with corresponding accommodation grooves, and the accommodation grooves arranged on the casing body 1 and the guide roller protective cover 3 cooperatively form corresponding paper outlets 8. The end part of the accommodation groove of the guide roller protective cover 3 is zigzag-shaped.

[0034] The upper two sides of the paper guiding part 201 are respectively provided with guiding plates 9 for preventing the printing paper from deviating, which prevent the printing paper from deviating in horizontal position, thereby further effectively ensuring the smoothness of printing.

[0035] The elastic member 403 is a flexible rubber ring, and the ends of the elastic member 403 are respectively fixed to the fixed guide wheel 402 and the pressing guide wheel 404.

[0036] The paper guiding convex 5 is integrally formed and fixed to the paper guiding part 201 of the upper cover 2.

[0037] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A printer casing facilitating paper feeding, characterized by, Comprising The upper part of the casing body (1) is fixedly installed with a corresponding upper cover (2), the middle part of the upper cover (2) is downwardly inclined to be provided with a corresponding paper guide part (201), the front side of the upper cover (2) is movably installed with a corresponding printing guide roller protective cover (3), and the inner side of the printing guide roller protective cover (3) is spaced apart from the paper guide part (201); The printing paper guide mechanism (4) comprises a group of installation shafts (401) rotatably installed on both sides of the lower part of the paper guide part (201), a corresponding fixed guide roller (402) is fixedly connected to each installation shaft (401), the upper part of the fixed guide roller (402) is connected with a corresponding compression guide roller (404) upwardly through a corresponding elastic element (403), the upper part of the compression guide roller (404) is fixedly connected with an iron limiting plate (405), and the two sides of the guide roller protective cover (3) are respectively provided with an electromagnet (406) located outside the corresponding iron limiting plate (405). The electromagnet (406) is energized to form adsorption on the outer side of the iron limiting plate (405), so that the inner side of the compression guide roller (404) is downwardly inclined to cooperate with the fixed guide roller (402) to clamp the printing paper.

2. The printer casing for facilitating paper feeding according to claim 1, wherein The upper surface of the paper guide part (201) is provided with a plurality of corresponding paper guide protrusions (5) upwardly and spaced apart, and the upper end surface of the fixed guide roller (402) is located below the paper guide protrusion (5).

3. The printer casing for facilitating paper feeding according to claim 1, wherein The two sides of the guide roller protective cover (3) are downwardly folded and provided with corresponding limiting guide holes (6), and the two sides of the upper cover (2) are fixedly connected with guide blocks (7) clamped into the limiting guide holes (6).

4. The printer casing for facilitating paper feeding according to claim 1, wherein The opposite sides of the casing body (1) and the guide roller protective cover (3) are respectively provided with corresponding accommodation grooves, and the accommodation grooves provided on the casing body (1) and the guide roller protective cover (3) cooperate to form a corresponding paper outlet (8).

5. The printer casing for facilitating paper feeding according to claim 1, wherein The end of the accommodation groove of the guide roller protective cover (3) is provided in a sawtooth shape.

6. The printer casing for facilitating paper feeding according to claim 1, wherein The upper two sides of the paper guide part (201) are respectively provided with guide plates (9) for preventing the printing paper from deviating.

7. The printer casing for facilitating paper feeding according to claim 1, wherein The elastic element (403) is a flexible rubber ring, and the ends of the elastic element (403) are respectively fixedly connected to the fixed guide roller (402) and the compression guide roller (404).

8. The printer casing for facilitating paper feeding according to claim 2, wherein The paper guide protrusion (5) is integrally formed and fixedly connected to the paper guide part (201) of the upper cover (2).

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