CN110843356A

CN110843356A - Paper blocking mechanism

Info

Publication number: CN110843356A
Application number: CN201911239675.0A
Authority: CN
Inventors: 唐海洋
Original assignee: Funai Electric Co Ltd
Current assignee: Funai Electric Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-02-28

Abstract

The invention relates to a paper blocking mechanism, which comprises a rod body, a blocking strip connected to the rod body, a frame arranged at one end of the rod body, and a driving mechanism connected between the frame and the rod body, and is characterized in that: actuating mechanism includes drive assembly and transmission assembly, transmission assembly connects between drive assembly and the body of rod, be provided with the torsional spring that can carry out the compression on the body of rod rotation direction between transmission assembly and the body of rod. This keep off paper mechanism on the basis of increase blend stop swing angle scope, homoenergetic normally accomplishes the work of keeping off paper under the condition of placing different paper volumes, so reduced because the paper is put the occurrence probability that paper slip caused the phenomenon of sending again of rubbing paper when not standardizing or printing last time, reduce the waste of paper, promoted customer satisfaction.

Description

Paper blocking mechanism

Technical Field

The invention relates to the technical field of printers, in particular to a paper blocking mechanism of a printer.

Background

The printer needs to twist paper in the first step before printing, and the lower paper is driven to slide inwards along with the twisting of the paper, and particularly for the obliquely placed paper, the situation of the downward sliding of the paper is more serious, for example, in the printer disclosed in the patent document "paper alignment device" in the chinese invention with the publication number CN1107014C (patent number 99802916.5), the placed paper is obliquely placed, and the paper is easy to slide downwards in the paper feeding process. Therefore, in order to avoid the influence of the paper slip on the normal paper feeding, the paper blocking mechanism needs to be used for performing the paper blocking operation before the paper is rubbed in, and after the paper blocking operation is completed, the blocking strip in the paper blocking mechanism needs to return to the lowest point, so that the paper rubbing operation is prevented from being hindered. When the paper enters the printing stage, the barrier strip returns to the maximum paper placing position again until the next printing is started and the actions are repeated.

Chinese patent application publication No. CN109715537A (application No. 201780054280.6) entitled sheet feeding apparatus, sheet processing apparatus using the same, and image forming apparatus, in which an alignment member is joinable to a pivot shaft, a lever being provided on one end of the pivot shaft. The lever may be fixed to the pivot shaft, and the cam gear may switch the alignment member between the alignment position and the transmission permission position according to a rotational phase of the cam gear, and the cam gear may include a gear portion and a cam portion. The gear portion is partially provided with a non-toothed portion. The cam portion has a cam profile for switching the alignment member between the alignment position and the transfer permitting position. The cam portion is connected to the lever. The cam portion may contact the lever and pivot the pivot shaft to switch the alignment member to the alignment position. When the contact between the cam portion and the lever is terminated, the holder presses the alignment member due to the elastic force of the first elastic member, and thus the alignment member can be pivoted to the transmission permitting position. However, in this structure, since the length of the rod is fixed, the rotation angle of the pivot shaft is limited, and the alignment member cannot be driven to pivot to the transmission-permitting position, which requires an additional component. In addition, when such a structure is applied to a printer in which sheets are placed obliquely, when a large number of sheets or very few sheets are placed, the alignment member also has a problem that it is jammed or cannot be swung to a position where a small number of sheets are aligned due to a limited swing angle.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a paper blocking mechanism of a printer, which can adjust the swing angle range of a blocking strip under the condition that the driving angle is not changed so as to normally complete paper blocking work under the condition of placing different amounts of paper.

The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a keep off paper mechanism, includes the body of rod, connects blend stop on the body of rod, sets up the frame in body of rod one end, connects the actuating mechanism between the frame and the body of rod, its characterized in that: actuating mechanism includes drive assembly and can drive the blend stop at the position of the minimum paper of alignment and the position range wobbling transmission assembly that allows the paper to pass through, transmission assembly connects between drive assembly and the body of rod, be provided with the torsional spring that can carry out the compression on the body of rod rotation direction between transmission assembly and the body of rod.

In order to conveniently realize the connection of transmission mechanism and the body of rod, transmission mechanism is including setting up the first transmission piece at body of rod tip, the tip of the body of rod has the linkage piece along the outside extension of axial, the linkage piece passes through the both ends of torsional spring are along the spacing connection of circumference on first transmission piece.

The structure is simple, the installation is convenient, the first transmission piece is provided with a groove facing the opening of the rod body, and the torsion spring is arranged in the groove; the utility model discloses a torsional spring, including recess, one end of torsional spring, linkage piece, be equipped with spacing hole on the cell wall of recess, the one end matching of torsional spring is put into in spacing hole, still be equipped with the spacing breach that allows torsional spring other end circumference wobbling on the cell wall of recess, the other end of torsional spring supports on a side of spacing breach, the linkage piece stretches into in the recess and along circumference spacing between the both ends of torsional spring.

In order to guarantee that the rod body can more smoothly carry out circumferential direction, the cross-section of linkage piece is the arc.

Preferably, the corresponding central angle of the limiting notch is smaller than 90 degrees.

In order to conveniently realize the limiting installation and avoid moving towards the drunkenness, the end part of the rod body extends along the axial direction to form a connecting part, the linkage piece extends outwards from the connecting part, and the first transmission piece is sleeved on the connecting part of the rod body through the groove.

Preferably, the transmission mechanism further comprises a second transmission member rotatably connected to the frame, and a third transmission member eccentrically connected to the first transmission member and the second transmission member, respectively.

Preferably, the second transmission part is provided with a connecting arm in a radially extending manner, the connecting arm is connected with a transmission rod, and the frame is provided with an arc-shaped hole for placing the transmission rod and matching with the swing range of the limiting rod.

The driving assembly comprises a driving source and a planetary gear set arranged on the frame, the driving source is in transmission connection with an input wheel in the planetary gear set, and an output wheel in the planetary gear set is sleeved on the transmission rod.

Preferably, the driving source is a motor.

Compared with the prior art, the invention has the advantages that: the paper blocking mechanism can drive the blocking strip on the rod body to swing within the range between the position of aligning the minimum paper and the position of allowing paper to be transmitted, and when different numbers of paper are placed and the blocking strip cannot swing to the position of aligning the minimum paper, the transmission mechanism and the rod body can relatively rotate under the action of the torsion spring because of the compression of the torsion spring, namely, under the condition that the transmission mechanism rotates, the rod body can not rotate, so that the transmission assembly can normally operate. Consequently, this keep off paper mechanism on the basis of increase blend stop swing angle scope, the homoenergetic normally accomplishes the work of keeping off paper under the condition of placing different paper volumes, so reduced because the paper is put the occurrence probability that paper slip caused the phenomenon of sending again of rubbing paper when not standardizing or printing last time, reduce the waste of paper, promoted customer experience.

Drawings

FIG. 1 is a perspective view of a paper stop mechanism according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a paper stop mechanism according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a paper stop mechanism in an embodiment of the invention.

FIG. 4 is a schematic view of the installation of the paper stop mechanism in the printer according to the embodiment of the invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 4, the paper blocking mechanism in this embodiment includes a rod 1, a blocking strip 2, a frame 3, a driving mechanism, and a torsion spring 4.

Wherein the body of rod 1 can the pivoted spacing install in the casing of printer, and blend stop 2 is connected on the body of rod 1 in order to be used for the paper of putting into in the alignment printer. The blend stop 2 can set up a plurality ofly as required, and 2 interval distribution of each blend stop are connected on the body of rod 1, and then blend stop 2 can swing along with the rotation of the body of rod 1, and then realize the alignment work of paper and allow the paper to pass through and carry out print job.

The driving mechanism in this embodiment is in transmission connection with the rod body 1, and is further used for driving the rod body 1 to rotate, and the driving mechanism includes a driving component (not shown in the figure) and a transmission component in transmission connection with the driving component, wherein the driving component includes a driving source and a planetary gear set connected to an output end of the driving source, the driving source in this embodiment employs a motor, an output end of the driving source is in transmission connection with an input wheel in the planetary gear set, the transmission component is connected between an output wheel in the planetary gear set and the rod body 1, and a torsion spring 4 capable of compressing in a rotation direction of the rod body 1 is arranged between the transmission component and the rod body 1.

As shown in fig. 1 to 3, the specific transmission assembly includes a first transmission member 5, a second transmission member 6 and a third transmission member 7.

As shown in fig. 3, the first transmission member 5 is disposed at an end of the rod body 1, the first transmission member 5 is provided with a groove 51 opened to face the rod body 1, and the torsion spring 4 is disposed in the groove 51. The groove wall of the groove 51 is provided with a limiting hole 52, one end of the torsion spring 4 is arranged in the limiting hole 52 in a matching manner, a shaft is arranged at the center of the groove 51 in the embodiment, and the torsion spring 4 is sleeved on the shaft. The groove wall of the groove 51 is further provided with a limiting notch 53 allowing the other end of the torsion spring 4 to swing circumferentially, and the other end of the torsion spring 4 abuts against one side edge of the limiting notch 53. The corresponding central angle of the limit notch 53 is smaller than 90 degrees. This results in a compression of less than 90 deg. in the circumferential direction between the two ends of the torsion spring 4.

The tip of the body of rod 1 has connecting portion 12 along axial extension, continues to extend outward along the axial from connecting portion 12 and is curved linkage piece 11 in cross-section, and first transmission piece 5 overlaps through recess 51 cover on connecting portion 12 of the body of rod 1, and then realizes being connected with the body of rod 1, and linkage piece 11 stretches into in recess 51 to along the spacing both ends between torsional spring 4 of circumference. Because the setting position of frame 3 and the body of rod 1 is all relatively fixed in the printer, the fastness that body of rod 1 and first transmission piece 5 are connected has then been guaranteed to this structure like this, and the effort of torsional spring 4 is enough to realize linkage piece 11 and the synchronous rotation of first transmission piece 5.

The second transmission member 6 is rotatably connected to the frame 3 through a shaft body on the frame 3, a connecting arm 61 is arranged on the second transmission member 6 in a radially extending manner, a transmission rod 62 is connected to the connecting arm 61 in a direction perpendicular to a plane where the connecting arm 61 is located, an output wheel in the planetary wheel set is sleeved on the transmission rod 62, and an arc-shaped hole 31 for placing the transmission rod 62 and matching with the swing range of the limiting rod is formed in the frame 3.

The two ends of the second transmission piece 6 are eccentrically connected with the first transmission piece 5 and the third transmission piece 7 respectively.

In this embodiment, the rotation relationship between the transmission assembly and the rod body 1 is: when the driving transmission rod 62 rotates about 65 ° around the shaft body in one direction, through the relative relationship of the third transmission and the first transmission member 5, the bar rotates 50 ° to reach the position of the least paper, and then rotates 100 ° reversely to reach the position allowing the paper to pass through.

The working process of the paper blocking mechanism in the embodiment is as follows: as shown in fig. 3, the initial position of the barrier rib 2 is a position where the barrier rib 2 is aligned with the sheets when a standard number of sheets are set in the printer. After the printer received the printing instruction, the work of control motor, and then drive the planetary gear set and rotate the work, and then drive transfer line 62 and rotate, corresponding second driving medium 6 then rotates, and then drive third driving medium 7, first driving medium 5 rotates, under the relation of connection effect of first driving medium 5 and the body of rod 1, drive blend stop 2 to the direction swing of aligning the paper, if only when two paper in the printer this moment, then torsional spring 4 keeps the initial position, drive body of rod 1 and rotate for first driving medium 5 is synchronous, and then drive blend stop 22 to swing gradually to the position of placing minimum paper and aligning, and then align the paper of placing in the printer. And if the printer has placed the paper of more paper volume this moment in, when the drive blend stop 2 swung to the position of the current volume of alignment paper, then blend stop 2 can't continue the swing again, and first transmission piece 5 continues to rotate, and linkage piece 11 stops the action, and linkage piece 11 swing in the tip that this moment can compress torsional spring 4 to spacing breach 53 certainly, has avoided the unable pivoted condition of first transmission piece 5. With the continuous rotation of the motor, the first transmission piece 5 continues to rotate, and under the working action of the transmission assembly, the barrier strip 2 is driven to swing towards the direction allowing the paper to pass through in the transmission way. If more paper is placed in the printer, the compressed torsion spring 4 is also gradually released and finally returns to the initial position. The first transmission piece 5 drives the linkage piece 11 to move synchronously, and then drives the barrier strip 2 to fall down gradually and enable paper to pass through in a transmission manner. Subsequently, the printer performs a paper pickup operation. After the paper twisting is finished, when the printer prints, the motor can be controlled to rotate reversely, and then the first transmission piece 5 is driven to rotate reversely, so that the rod body 1 is driven to rotate, and the barrier strip 2 is gradually reset to the initial position. This operation is repeated to feed paper to the printer. In the whole working process, driving source, drive assembly transmission are stable, export great and stable power when aligning the paper to can drive blend stop 2 and realize wide-angle swing, when can placing the paper of different quantity in the printer, the homoenergetic guarantees the normal operating of printer. Therefore, the probability of occurrence of the phenomenon of paper pickup and re-feeding caused by paper sliding when paper is not placed in a standard mode or is printed last time is reduced, the waste of paper is reduced, and the satisfaction degree of customers is improved.

Claims

1. The utility model provides a keep off paper mechanism, includes the body of rod (1), connects blend stop (2) on the body of rod (1), sets up frame (3) in body of rod (1) one end, connects the actuating mechanism between frame (3) and the body of rod (1), its characterized in that: actuating mechanism includes drive assembly and transmission assembly, transmission assembly connects between drive assembly and the body of rod (1), be provided with between transmission assembly and the body of rod (1) and carry out the torsional spring (4) that compress on the body of rod (1) direction of rotation.

2. The paper stop mechanism of claim 1, wherein: the transmission mechanism comprises a first transmission piece (5) arranged at the end part of the rod body (1), a linkage piece (11) extends outwards along the axial direction at the end part of the rod body (1), and the linkage piece (11) is connected to the first transmission piece (5) in a limiting mode along the circumferential direction at the two ends of the torsion spring (4).

3. The paper stop mechanism of claim 2, wherein: the first transmission piece (5) is provided with a groove (51) facing the opening of the rod body (1), and the torsion spring (4) is arranged in the groove (51); be equipped with spacing hole (52) on the cell wall of recess (51), the one end matching of torsional spring (4) is put into in spacing hole (52), still be equipped with on the cell wall of recess (51) and allow torsional spring (4) other end circumference wobbling spacing breach (53), the other end of torsional spring (4) supports on a side of spacing breach (53), linkage piece (11) stretch into in recess (51) and along circumference spacing between the both ends of torsional spring (4).

4. The paper stop mechanism of claim 3, wherein: the cross section of the linkage sheet (11) is arc-shaped.

5. The paper stop mechanism according to claim 3 or 4, wherein: the central angle corresponding to the limiting notch (53) is smaller than 90 degrees.

6. The paper stop mechanism according to claim 3 or 4, wherein: the end of the rod body (1) extends along the axial direction to form a connecting part (12), the linkage piece (11) extends outwards from the connecting part (12), and the first transmission piece (5) is sleeved on the connecting part (12) of the rod body (1) through the groove (51).

7. The paper stop mechanism according to any one of claims 2 to 4, wherein: the transmission mechanism further comprises a second transmission piece (6) rotationally connected to the frame (3), and a third transmission piece (7) eccentrically connected with the first transmission piece (5) and the second transmission piece (6) respectively.

8. The paper stop mechanism of claim 7, wherein: the upper portion of the second transmission piece (6) extends along the radial direction to form a connecting arm (61), the connecting arm (61) is connected with a transmission rod (62), and an arc-shaped hole (31) which is used for enabling the transmission rod (62) to be placed in and matched with the swing range of the limiting rod is formed in the frame (3).

9. The paper stop mechanism of claim 7, wherein: the driving assembly comprises a driving source and a planetary gear set arranged on the frame (3), the driving source is in transmission connection with an input wheel in the planetary gear set, and an output wheel in the planetary gear set is sleeved on a transmission rod (62).

10. The paper stop mechanism of claim 9, wherein: the driving source is a motor.