Paper feeding device of printer

Abstract

The utility model is suitable for the technical field of printer paper feeding, and provides a printer paper feeding device which comprises a paper feeding table. The paper feeding groove is formed in the outer wall of one side of the paper feeding table; the upper negative pressure suction plate is fixedly embedded into the top of the interior of the paper feeding groove through a bolt; the lower negative-pressure suction plate is embedded and fixed at the bottom of the interior of the paper feeding groove through a bolt and is close to the position under the upper negative-pressure suction plate; the adsorption holes are respectively formed in the bottom of the upper negative pressure adsorption plate and the top of the lower negative pressure adsorption plate; an air pump is fixed on the outer wall of one side of the paper feeding table through a bolt and is fixedly connected with the outer wall through a bolt; by means of the negative pressure suction force of different forces on the upper side and the lower side of the inner side of the paper feeding groove, when it is guaranteed that a single piece of paper is fed according to a preset track, two pieces of paper can be separated during paper feeding, it is guaranteed that the paper is fed into a printer in a single-piece mode, paper jam is avoided, and subsequent double-face printing on the single piece of paper can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to printer paper feeding technical field especially relates to a printer paper feeding device. BACKGROUND

[0002] The printer is one of computer output devices, is used for printing computer processing result on relevant medium, and the printer needs paper feeding device to feed paper.

[0003] When the existing printer paper feeding device transports the stacked paper, two papers are easily transported at the same time, and when double-sided printing is carried out, the printing content is printed on two papers, causing the waste on paper.

[0004] Therefore, a printer paper feeding device is provided. UTILITY MODEL CONTENTS

[0005] The utility model provides a printer paper feeding device, aims at solving above -mentioned problem.

[0006] The utility model is such implementation, a printer paper feeding device, include: paper feeding platform, the paper feeding groove that is opened in the one side outer wall of paper feeding platform, the upper negative pressure suction plate that is fixed through bolt embedding in the inside top of paper feeding groove, the lower negative pressure suction plate that is fixed through bolt embedding in the inside bottom of paper feeding groove near the position of the upper negative pressure suction plate directly below, the adsorption hole that is opened respectively in the bottom of upper negative pressure suction plate and the top of lower negative pressure suction plate, the gas pump that is fixed through bolt on the one side outer wall of paper feeding platform is connected through bolt fixed, the connecting pipe that is fixed respectively between upper negative pressure suction plate and lower negative pressure suction plate and gas pump, the partition that is fixed through bolt in the inside wall of paper feeding groove near the position between upper negative pressure suction plate and lower negative pressure suction plate, the shunt platform that is integrally formed in the one side end of partition, two side plates one that are fixed through bolt on the one side outer wall of paper feeding platform near the position of paper feeding groove outside, the paper feeding lower conveying roller and paper feeding upper conveying roller that are rotated between two side plates one, the paper feeding lower conveying roller is located below paper feeding upper conveying roller, two side plates two that are fixed through bolt on the other side outer wall of paper feeding platform near the position of paper feeding groove outside, the paper output lower conveying roller and paper output upper conveying roller that are rotated between two side plates two, the paper output lower conveying roller is located below paper output upper conveying roller.

[0007] Preferably, the inside bottom of the paper feeding groove is provided with an inclined surface, and the inside top of the paper feeding groove is horizontal with the horizontal surface.

[0008] Preferably, the upper negative pressure suction plate and the lower negative pressure suction plate are both hollow plate structures, and the upper negative pressure suction plate, the lower negative pressure suction plate and the gas pump are all connected with the connecting pipe.

[0009] Preferably, the cross section of the shunt platform is an isosceles triangle structure.

[0010] Preferably, the negative pressure suction force in the upper negative pressure suction plate is greater than that of the lower negative pressure suction plate.

[0011] Preferably, the paper outlet lower conveying roller and the paper outlet upper conveying roller are both provided with two, wherein one of the paper outlet lower conveying roller and one of the paper outlet upper conveying roller constitute a set of conveying structure, and two sets of the conveying structure are arranged on the outer side wall of the paper feeding table in a spaced manner.

[0012] Compared with the prior art, the embodiment of the application has the following beneficial effects:

[0013] Through the upper and lower negative pressure suction force of different strength in the paper feeding groove, the two paper sheets can be separated when feeding, the paper sheets are fed in single sheet, not only avoiding paper jam, but also realizing double-sided printing on the subsequent single paper sheet, through the cooperation of the paper feeding groove and the separation plate, the paper sheets can be separated and guided respectively, avoiding the paper sheets from being adhered together to affect the subsequent printing. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the utility model;

[0015] Figure 2 is a partial internal structure schematic view (when the paper feeding groove is exposed) of the utility model;

[0016] Figure 3 is a partial internal structure schematic view of the utility model;

[0017] Figure 4 is a paper feeding table sectional view of the utility model.

[0018] In the drawing: 1, paper feeding table; 2, paper feeding groove; 3, upper negative pressure suction plate; 4, lower negative pressure suction plate; 5, suction hole; 6, air pump; 7, connecting pipe; 8, separation plate; 9, shunt table; 10, side plate one; 11, paper inlet lower conveying roller; 12, paper inlet upper conveying roller; 13, side plate two; 14, paper outlet lower conveying roller; 15, paper outlet upper conveying roller. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting upon the application; the terms "comprising," "including," and "having," and variations thereof, as used in enrolling and claims herein, are intended to be open-ended and to mean including, but not limited to; the terms "first," "second," and the like, as used in the description herein, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

[0020] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments. It is expressly understood that the embodiments described herein are combinable with each other.

[0021] Embodiments of the present application provide a printer paper feeding device, such as Figures 1-4As shown, including the paper feeding table 1, the outer wall of one side of the paper feeding table 1 is provided with a paper feeding groove 2, the inside top of the paper feeding groove 2 is fixedly connected with an upper negative pressure suction plate 3 by bolt embedding, and the bottom of the paper feeding groove 2 is fixedly connected with a lower negative pressure suction plate 4 by bolt embedding, the bottom of the upper negative pressure suction plate 3 and the top of the lower negative pressure suction plate 4 are provided with suction holes 5, the outer wall of one side of the paper feeding table 1 is fixedly connected with two air pumps 6 through bolts, the input ends of the two air pumps 6 are fixedly connected with the outer side walls of the upper negative pressure suction plate 3 and the lower negative pressure suction plate 4 through connecting pipes 7, the upper negative pressure suction plate 3 and the lower negative pressure suction plate 4 are both hollow plate structures, and the upper negative pressure suction plate 3, the lower negative pressure suction plate 4 and the air pump 6 are all communicated with the connecting pipe 7, the power of the air pump 6 is designed according to the negative pressure required for suctioning paper, so that the negative pressure generated by the air pump 6 can attract the paper upwards or downwards, and the suction force of the suction hole 5 is prevented from being too large to cause the paper to be unable to be transported, the paper is attracted while the paper feeding operation is maintained, a paper feeding groove 2 is provided on the inner side wall of the paper feeding groove 2, and the upper negative pressure suction plate 3 and the lower negative pressure suction plate 4 are fixedly connected with a partition plate 8 through bolts, one side end of the partition plate 8 is integrally formed with a shunt table 9, the cross section of the shunt table 9 is an isosceles triangle structure, the upper negative pressure suction plate 3 and the lower negative pressure suction plate 4 are in a staggered state in the vertical direction with the shunt table 9, the outer side of the paper feeding table 1 is fixedly connected with two side plates one 10 through bolts, the two side plates one 10 are rotatably connected with a paper feeding lower conveying roller 11 and a paper feeding upper conveying roller 12, the paper feeding lower conveying roller 11 is located below the paper feeding upper conveying roller 12, the outer side of the other side wall of the paper feeding table 1 is fixedly connected with two side plates two 13 through bolts, the two side plates two 13 are rotatably connected with a paper output lower conveying roller 14 and a paper output upper conveying roller 15, the paper output lower conveying roller 14 is located below the paper output upper conveying roller 15, the paper output lower conveying roller 14 and the paper output upper conveying roller 15 are both provided with two, one of the paper output lower conveying roller 14 and one of the paper output upper conveying roller 15 form a group of conveying structures, and the two groups of conveying structures are arranged on the outer side wall of the paper feeding table 1 in a spaced manner.

[0022] It should be noted that, since the existing printer paper feeding device is easy to drive two paper sheets to be transported at the same time when transporting the stacked paper sheets, the printing content is printed on two paper sheets when double-sided printing is performed, causing waste of paper sheets, the upper and lower negative pressure suction force inside the paper feeding groove 2 can separate two paper sheets when the single paper sheet is fed along the predetermined track, ensuring that the paper sheet is fed into the printer as a single sheet, avoiding paper jamming, and realizing double-sided printing on the subsequent single paper sheet, through the cooperation of the paper feeding groove 2 and the partition plate 8, the paper sheets can be separated and guided respectively, avoiding the paper sheets from being stuck together to affect the subsequent printing.

[0023] Specifically, in the embodiment, the scheme mainly comprises a paper feeding groove 2, an upper negative pressure suction plate 3 and a lower negative pressure suction plate 4. When the paper feeding operation is performed, the paper is conveyed to the inside of the paper feeding groove 2 through the rotation of the paper feeding lower conveying roller 11 and the paper feeding upper conveying roller 12. The air pump 6 draws the air in the upper negative pressure suction plate 3 and the lower negative pressure suction plate 4 through the connecting pipe 7, and negative pressure is generated in the upper negative pressure suction plate 3 and the lower negative pressure suction plate 4. The external air enters the upper negative pressure suction plate 3 and the lower negative pressure suction plate 4 through the suction holes 5. At this time, the negative pressure is generated near the suction holes 5. When the paper enters the space between the upper negative pressure suction plate 3 and the lower negative pressure suction plate 4, the negative pressure generated by the upper negative pressure suction plate 3 is greater than that of the lower negative pressure suction plate 4. When the paper is one sheet, one side end of the paper moves upward under the action of the negative pressure and moves to the upper side of the partition plate 8 under the conveying of the paper feeding lower conveying roller 11 and the paper feeding upper conveying roller 12, and finally is output through the paper feeding lower conveying roller 14 and the paper feeding upper conveying roller 15 to provide the paper for the printer. When the paper is two sheets, the upper layer paper moves upward under the action of the negative pressure suction force of the upper negative pressure suction plate 3, and the lower layer paper moves downward under the action of the negative pressure suction force of the lower negative pressure suction plate 4. The two sheets of paper are separated, so that the paper is not adhered together to affect the subsequent printing.

[0024] As shown in the further preferred embodiment of the utility model, Figure 2 and Figure 4 The inside bottom of the paper feeding groove 2 is provided with an inclined surface, and the inside top of the paper feeding groove 2 is horizontal to the horizontal surface.

[0025] In the embodiment, the separated lower layer paper can be inclinedly guided out through the inclined surface, the lower layer paper is prevented from entering the printer to cause the paper supply to be disordered, and the paper can be conveyed to the printer through the interaction of the paper feeding groove 2 and the partition plate 8.

[0026] As shown in the further preferred embodiment of the utility model, Figures 1-4 The negative pressure suction force in the upper negative pressure suction plate 3 is greater than that in the lower negative pressure suction plate 4.

[0027] In the embodiment, when the single sheet of paper enters between the upper negative pressure suction plate 3 and the lower negative pressure suction plate 4, the negative pressure on the top of the single sheet of paper is greater, so that the single sheet of paper is conveyed and moved along the inside top of the paper feeding groove 2.

[0028] It should be noted that, for the foregoing embodiments, in order to simply describe, they are all expressed as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the action sequence described, because according to the utility model, certain steps can adopt other sequences or be performed simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the utility model.

[0029] In several embodiments provided in the present application, it should be understood that the disclosed apparatus can be implemented in other manners. For example, the division of the apparatus embodiments described above is merely illustrative, and the division of the units can be different, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the display or discussion of the coupling or communication connection between the units can be indirect coupling or communication connection through some interface, or direct coupling or communication connection between the units, which can be electrical, mechanical or other forms.

[0030] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0031] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can combine, add or delete the features of the embodiments of the present application according to the circumstances without creative labor, so as to obtain different, but essentially not deviating from the concept of the present application. Other technical solutions, which also belong to the scope of protection of the present application.

Claims

1. A printer paper feed device characterized by comprising: Include: Paper feeding platform (1); Paper feeding groove (2) is opened on the outer wall of one side of the paper feeding platform (1); The upper negative pressure suction plate (3) is fixedly embedded in the inside top of the paper feeding groove (2) through bolts; The lower negative pressure suction plate (4) is fixedly embedded in the inside bottom of the paper feeding groove (2) through bolts, close to the position directly below the upper negative pressure suction plate (3); Suction holes (5) are respectively opened in the bottom of the upper negative pressure suction plate (3) and the top of the lower negative pressure suction plate (4); The air pump (6) is fixed on the outer wall of one side of the paper feeding platform (1) through bolts; The connecting pipes (7) are respectively fixed between the upper negative pressure suction plate (3) and the lower negative pressure suction plate (4) and the air pump (6); The partition plate (8) is fixedly embedded in the inside wall of the paper feeding groove (2) through bolts, close to the position between the upper negative pressure suction plate (3) and the lower negative pressure suction plate (4); The shunt platform (9) is integrally formed on one side end of the partition plate (8); Two side plates one (10) are fixedly embedded on the outer wall of one side of the paper feeding platform (1) through bolts, close to the outside of the paper feeding groove (2); The paper feeding lower conveying roller (11) and the paper feeding upper conveying roller (12) are rotatably arranged between the two side plates one (10), and the paper feeding lower conveying roller (11) is located below the paper feeding upper conveying roller (12); Two side plates two (13) are fixedly embedded on the outer wall of the other side of the paper feeding platform (1) through bolts, close to the outside of the paper feeding groove (2); The paper discharging lower conveying roller (14) and the paper discharging upper conveying roller (15) are rotatably arranged between the two side plates two (13), and the paper discharging lower conveying roller (14) is located below the paper discharging upper conveying roller (15).

2. A printer paper feed apparatus as claimed in claim 1, wherein, An inclined surface is formed in the inside bottom of the paper feeding groove (2), and the inside top of the paper feeding groove (2) is horizontal with the horizontal plane.

3. A printer paper feed apparatus as claimed in claim 1, wherein, The upper negative pressure suction plate (3) and the lower negative pressure suction plate (4) are both hollow plate structures, and the upper negative pressure suction plate (3), the lower negative pressure suction plate (4) and the air pump (6) are all connected with the connecting pipes (7).

4. A printer paper feed apparatus as claimed in claim 1, wherein, The cross section of the shunt platform (9) is an isosceles triangle structure.

5. A printer paper feed apparatus as claimed in claim 1, wherein, The negative pressure suction force in the upper negative pressure suction plate (3) is greater than that in the lower negative pressure suction plate (4).

6. A printer paper feed apparatus as claimed in claim 1, wherein, The paper discharging lower conveying roller (14) and the paper discharging upper conveying roller (15) are both provided with two, one of the paper discharging lower conveying roller (14) and one of the paper discharging upper conveying roller (15) form a conveying structure, and two sets of the conveying structure are arranged on the outer wall of the paper feeding platform (1) in a spaced manner.

Images