CN-120645568-B - Printer with a printer body

Abstract

The invention discloses a printer which comprises a printing main body and an external paper bin connected to the printing main body, wherein the printing main body is provided with a paper feeding channel and a paper feeding assembly, the external paper bin is provided with a movable paper feeding plate, at least one part of the paper feeding plate extends into the printing main body, the paper feeding assembly comprises a paper feeding roller and a paper guiding plate, the paper feeding roller is rotatably arranged at a position close to a paper feeding opening, and the paper guiding plate and a lower paper feeding panel of the paper feeding channel are oppositely arranged in the vertical direction. The printer can realize stable paper feeding of the external paper bin and can more efficiently finish a printing task.

Inventors

• TANG FENG
• FAN WENYI

Assignees

• 中山宝丽图电子技术有限公司

Dates

Publication Date

20260508

Application Date

20250710

Claims (9)

1. 1. A printer includes a printing body and an external paper magazine connected to the printing body, wherein: the printing main body is provided with a paper feeding channel and a paper feeding assembly, and both ends of the paper feeding channel are respectively provided with a paper feeding port and a paper discharging port; The paper feeding assembly comprises a paper feeding roller and a paper guide plate, wherein the paper feeding roller is rotatably arranged in the printing main body at a position close to the paper feeding port, and the paper guide plate and a lower paper feeding panel of the paper feeding channel are oppositely arranged in the vertical direction and form a gap allowing paper to pass through; The printing main body is also provided with a lifting assembly, the lifting assembly comprises a lifting piece, a first elastic piece and a reset driving mechanism, wherein the lifting piece is rotatably arranged, the first elastic piece can enable the lifting piece to rotate to be in abutting connection with the paper feeding plate so as to push the paper feeding plate to move to enable paper in the external paper bin to be in contact with the paper feeding roller, and the reset driving mechanism can enable the lifting piece to be driven to reversely rotate to be in non-abutting connection with the paper feeding plate; the reset driving mechanism comprises a cam component and a motor for driving the cam component to rotate, and the cam component is provided with a cam part for forcing the lifting piece to rotate to the non-abutting state.
2. 2. The printer of claim 1, wherein the paper feed plate is rotatably disposed.
3. 3. The printer of claim 1, wherein a first detector is provided in the print body for detecting the position of the cam member and a second detector is provided for detecting the position of the lifter.
4. 4. The printer of claim 1, wherein the lower feed panel has ribs on opposite sides for laterally spacing the sheets.
5. 5. The printer of claim 4, wherein the paper guide plate is movably sleeved on a roller shaft of the paper feed roller, and the paper feed assembly further comprises a second elastic piece acting on the paper guide plate, and the paper guide plate is abutted against the retaining edge under the action of the second elastic piece.
6. 6. The printer of claim 1, wherein the lower paper feed panel comprises a lifting surface arranged close to the paper feed opening, the lifting surface extends obliquely upwards along the paper feed direction, the paper guide plate is arranged above the lifting surface, and one side of the paper guide plate facing the lifting surface is provided with a guide rib matched with the lifting surface.
7. 7. The printer of claim 1, wherein the print body comprises an upper body and a lower body formed separately, at least a portion of the paper feed path is defined between the upper body and the lower body, and the paper feed assembly and the lifting assembly are both disposed on the lower body.
8. 8. The printer according to claim 7, wherein the printer is a thermal printer, the printing main body is provided with a printing assembly comprising a thermal printing head and a paper feeding roller, the paper feeding roller is arranged on the lower main body, the thermal printing head is arranged on the upper main body, and a paper feeding driving mechanism capable of driving the paper feeding roller and the paper feeding roller to rotate simultaneously is arranged in the lower main body.
9. 9. The printer of claim 1, wherein the outer paper bin comprises an upper bin body and a lower bin body, one end of the lower bin body is detachably connected with the printing main body, the other end of the lower bin body is rotatably connected with the upper bin body, and the paper feeding plate is rotatably arranged on the lower bin body.

Description

Printer with a printer body Technical Field The invention relates to the technical field of printers, in particular to a paper feeding structure of a printer. Background Traditional printers generally set up the paper storehouse in its inside, lead to the volume relatively great, and adopt detachable outside paper storehouse although have the advantage that can reduce the volume of printing the main part and conveniently accomodate, but the problem of card paper appears easily with the junction of printing the main part in outside paper storehouse. In particular, small printers (e.g., thermal printers) in which the paper feed path is narrow, the paper is easily jammed between the external paper hopper and the printing body. The paper jam can cause interruption of a printing task, a user is required to manually clear the paper jam, the printing efficiency is reduced, paper waste is caused, a printing main body is damaged due to frequent paper jam, and the maintenance cost and the equipment failure rate are increased. Disclosure of Invention In order to solve the above problems, at least in part, a main object of the present invention is to provide a printer that facilitates stable feeding of paper from an external paper hopper. In order to achieve the above main object, the present invention discloses a printer comprising a printing body and an external paper deck connected to the printing body, wherein: The printing main body is provided with a paper feeding channel, a paper feeding assembly and a lifting assembly, wherein both ends of the paper feeding channel are respectively provided with a paper feeding port and a paper outlet; The paper feeding assembly comprises a paper feeding roller and a paper guide plate, wherein the paper feeding roller is rotatably arranged at a position, close to the paper feeding port, in the printing main body, and the paper guide plate and a lower paper feeding panel of the paper feeding channel are oppositely arranged in the vertical direction and form a gap allowing paper to pass through. According to the technical scheme, after the paper enters the paper feeding channel, the warping of the paper is restrained by the paper guide plate, so that the paper can be smoothly fed in the paper feeding channel, the occurrence of paper jam is avoided or reduced, and more efficient printing operation is realized. Further, the printing main body further comprises a lifting assembly, the lifting assembly comprises a lifting piece, a first elastic piece and a reset driving mechanism, the lifting piece is rotatably arranged, the first elastic piece can enable the lifting piece to rotate to be in a state of being abutted against the paper feeding plate so as to push the paper feeding plate to move, paper in the external paper bin is enabled to be in contact with the paper feeding roller, and the reset driving mechanism can drive the lifting piece to move reversely. Among the above-mentioned technical scheme, the printer during operation first elastic component can make the cardboard that advances to be close to the direction removal of paper feed roller to the state that its front end and elastic force contacted with the paper in the outside paper storehouse, and the contact force between paper and the paper feed roller is provided by first elastic component, thereby can avoid the paper to produce the card paper in the junction of printing main part and outside paper storehouse, realize stabilizing the paper feed. Further, the paper feeding plate is rotatably arranged, and the reset driving mechanism can drive the lifting piece to reversely rotate to a non-abutting state separated from the paper feeding plate; the reset driving mechanism comprises a cam component and a motor for driving the cam component to rotate, and the cam component is provided with a cam part for forcing the lifting piece to rotate to the non-abutting state. The cam part is adopted to push the lifting piece, so that the rotation process of the lifting piece is smoother. Further, a first detector for detecting the position of the cam member and a second detector for detecting the position of the lift plate are provided in the print main body. Wherein the first detector and the second detector preferably use micro switches. Further, two opposite sides of the lower paper feeding panel are provided with flanges for laterally limiting paper. The paper is laterally limited by the flanges, so that paper deflection can be prevented from being caused to jam. Further, the paper guide plate is movably sleeved on the roller shaft of the paper feed roller, the paper feed assembly further comprises a second elastic piece acting on the paper guide plate, and the paper guide plate is abutted with the retaining edge under the action of the second elastic piece. The second elastic piece can prevent the paper guide plate from jumping when the paper feed roller rotates, so that a better paper guide effect is realized. The lower paper fe