CN112777385B

CN112777385B - Paper sheet processing apparatus

Info

Publication number: CN112777385B
Application number: CN201911086885.0A
Authority: CN
Inventors: 张佑伦
Original assignee: Primax Electronics Ltd
Current assignee: Primax Electronics Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2023-01-03
Anticipated expiration: 2039-11-08
Also published as: CN112777385A

Abstract

The invention provides a paper processing device which is used for processing a plurality of pieces of paper fed from a printing device. The casing includes the paper platform of putting of outside extension, puts the paper platform and is used for bearing these papers, presses paper device including pressing the paper body of rod, drive assembly and interlock subassembly, presses the paper body of rod configuration in the top of putting the paper platform and include the portion of pressing paper. The driving assembly is arranged on the shell. The linkage assembly is arranged between the driving assembly and the paper pressing rod body, the driving assembly drives the linkage assembly to enable the linkage assembly to drive the paper pressing rod body to rotate relative to the paper placing platform, the paper pressing portion is further enabled to move to the target position from the starting position, the paper pressing portion contacts the paper in the process of moving to the target position, and a guide channel is defined between the target position and the paper placing platform by the paper pressing portion.

Description

Paper sheet processing apparatus

Technical Field

The present invention relates to a paper processing apparatus, and more particularly, to a paper processing apparatus having a platen.

Background

In modern offices, printing devices are indispensable tools, and include photocopiers, printers, scanners, office machines, and the like, among which the printer is most commonly used. Generally, a printer is connected to a computer, and a user can print an electronic document on the computer on blank paper through the printer. In order to facilitate sorting and filing, a user only needs to take out and align the printed paper sheets and bind the printed paper sheets into a book, so that the paper sheets can be prevented from being scattered in various places in a messy manner. For the user, the printer must wait for the printing operation before manually performing the binding procedure, and because the amount of data of the electronic document to be printed is different, the waiting time of the user is different, which brings about considerable trouble to the user. In view of the above, a paper processing apparatus with a binding function is proposed to solve the above problems.

A known paper processing apparatus has a paper placing platform for placing a plurality of pages of documents output from a printer or a scanner. The paper processing device performs operations such as arraying, binding and punching of a plurality of pages of documents on the paper placing platform, and then discharges the plurality of pages of documents to be positioned outside the office machine for a user to take. The multi-page documents may warp or fold in the process of falling into the paper placing platform, so that if the multi-page documents fall into the paper placing platform in sequence, the multi-page documents are affected by the documents already placed on the paper placing platform and are not orderly stacked, and the paper processing device is provided with the paper pressing device for pressing the multi-page documents flat when the multi-page documents fall into the paper placing platform, so that the multi-page documents on the paper placing platform are orderly stacked.

In the known paper processing device, the paper pressing device usually presses down the multiple pages of documents on the paper platform by the weight of the element, but if the documents with higher rigidity or higher curling degree are encountered by the gravity method, the curled documents can not be smoothly pressed, and the subsequent binding operation of the documents is directly influenced. Therefore, how to improve the above problems is the focus of attention of those skilled in the art.

Disclosure of Invention

One objective of the present invention is to provide a paper processing apparatus, wherein a driving assembly and a linking assembly drive a paper pressing rod to rotate relative to a paper placing platform and press paper on the paper placing platform, and a guiding space is defined between a paper pressing portion of the paper pressing rod and the paper placing platform so that the paper can smoothly enter a binding apparatus through the guiding space for binding.

Other objects and advantages of the present invention will be further understood from the technical features disclosed in the present invention.

To achieve one or a part of or all of the above or other objects, the present invention provides a paper processing apparatus for processing a plurality of sheets of paper fed from a printing apparatus, the paper processing apparatus including a housing and a paper pressing device. The casing includes the outward extension puts paper platform, puts paper platform and is used for bearing these papers. The paper pressing device comprises a paper pressing rod body, a driving assembly and a linkage assembly. The paper pressing rod body is arranged above the paper placing platform and comprises a paper pressing part. The driving assembly is arranged on the shell. The linkage assembly is arranged between the driving assembly and the paper pressing rod body, the driving assembly drives the linkage assembly to enable the linkage assembly to drive the paper pressing rod body to rotate relative to the paper placing platform, the paper pressing portion is further enabled to move from the starting position to the target position, the paper pressing portion contacts with the paper in the process of moving to the target position, and a guide channel is defined between the paper pressing portion and the paper placing platform on the target position.

In an embodiment of the invention, the driving assembly includes a solenoid valve body and an electromagnetic push rod, and the electromagnetic push rod is disposed in the solenoid valve body, and a portion of the electromagnetic push rod is exposed outside the solenoid valve body.

In an embodiment of the invention, the housing further includes a positioning shaft and a fixed end, the linkage assembly includes a first spring connecting rod, a second spring connecting rod and a first transmission member, the first transmission member includes a first connecting hole, a second connecting hole and a pivot portion, the first connecting hole and the second connecting hole are opposite to each other, the pivot portion is located between the first connecting hole and the second connecting hole, the first spring connecting rod is connected between the electromagnetic push rod and the first connecting hole of the first transmission member, the second spring connecting rod is connected between the fixed end and the second connecting hole of the first transmission member, and the first transmission member is pivotally connected to the positioning shaft through the pivot portion.

In an embodiment of the invention, the platen lever further includes a second transmission member, the second transmission member is in contact with the first transmission member of the linkage assembly, when the solenoid valve body is in an energized state, the solenoid valve body drives the solenoid rod to move in the first direction, the first spring link and the second spring link are stretched during the movement of the solenoid rod in the first direction, the first transmission member is driven to rotate in the first rotation direction with the positioning shaft as a fulcrum by an elastic restoring force of the first spring link, and the first transmission member drives the second transmission member to rotate in a second rotation direction opposite to the first rotation direction, so as to drive the platen lever to rotate in the second rotation direction, so that the platen portion moves to the target position.

In an embodiment of the invention, when the electromagnetic valve body is switched from the power-on state to the power-off state, the electromagnetic push rod moves in a second direction opposite to the first direction, the first spring link rod is driven to move in the second direction during the movement of the electromagnetic push rod in the second direction, the first transmission member is driven to rotate in the second rotation direction with the positioning shaft as a fulcrum by an acting force generated by the movement of the first spring link rod in the second direction and an elastic restoring force of the second spring link rod, and the first transmission member drives the second transmission member to rotate in the first rotation direction, so as to drive the platen rod body to rotate in the first rotation direction, so that the platen portion returns to the initial position.

In an embodiment of the invention, the first transmission component includes a plurality of first teeth, the second transmission component includes a plurality of second teeth, and the first teeth and the second teeth are engaged with each other.

In an embodiment of the invention, the paper processing apparatus further includes a transmission roller assembly disposed on the housing and located above the paper platform, the transmission roller assembly includes a rod and a plurality of rollers pivotally connected to the rod, the paper pressing rod is pivotally connected to the rod, and the paper pressing rod is driven by the linkage assembly to rotate relative to the paper platform with the rod as a fulcrum.

In an embodiment of the invention, the paper processing apparatus further includes a binding device, the binding device is disposed on the housing and located at one side of the paper platform, the paper pressing device is adjacent to the binding device, and the paper on the paper platform enters the binding device through the guide channel to be bound.

In an embodiment of the invention, the paper pressing portion of the paper pressing rod body includes a paper pressing surface facing the paper placing platform, the paper pressing surface has a plane section and an inclined section connected to each other, the plane section is located at a position close to the binding device, the inclined section is located at a position far away from the binding device, an equidistant channel is defined between the plane section and the paper placing platform, the inclined section inclines in a direction far away from the paper placing platform and defines a non-equidistant channel with a taper in a direction close to the binding device with the paper placing platform, and the guiding channel includes an equidistant channel and a non-equidistant channel.

According to the paper processing device provided by the embodiment of the invention, the paper on the paper placing platform is pressed flatly by the paper pressing device, and the paper can smoothly enter the binding device through the guide space for binding operation through the guide channel defined between the paper pressing rod body and the paper placing platform. The paper pressing device mainly comprises a paper pressing rod body, a driving assembly and a linkage assembly, the driving assembly and the linkage assembly drive the paper pressing rod body to rotate relative to the paper placing platform, and the paper pressing device can still smoothly press paper under the condition that the curling degree of the paper is overlarge or the rigidity of the paper is strong, so that the subsequent binding operation of the paper is facilitated. Moreover, the paper is guided through a guide channel defined between the paper pressing rod body and the paper placing platform, so that the paper cannot be jammed in the process of being fed into the binding device. In addition, under the structural design of the paper processing device, the volume of the whole device can be effectively reduced, and the manufacturing cost is reduced.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic view of an external structure of a paper processing apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic side view of the sheet processing apparatus shown in fig. 1.

Fig. 3 is a schematic structural view of the platen pressing device of this embodiment before operation.

Fig. 4 is a schematic structural view of the paper pressing device shown in this embodiment after actuation.

Fig. 5 to 7 are schematic views illustrating the operation of the paper pressing device for paper pressing and paper guiding in this embodiment.

The reference numbers are as follows:

1: paper sheet processing apparatus

10: shell body

11: paper pressing device

12: binding device

13: transmission roller assembly

100: paper placing platform

101: upper shell

102: lower casing

103: positioning shaft

104: fixed end

111: paper pressing rod body

112: drive assembly

113: linkage assembly

120: paper entry opening

131: rod body

132: roller wheel

1110: paper pressing part

1111: second transmission part

1121: electromagnetic valve body

1122: electromagnetic push rod

1131: first spring connecting rod

1132: second spring connecting rod

1133: first transmission part

C1: first connecting hole

C2: second connecting hole

C3: pivoting part

D1: a first direction

D2: second direction

F: paper pressing surface

F1: plane segment

F2: slope section

G: guide channel

G1: equidistant channel

G2: non equidistant channel

P: paper sheet

P1: starting position

P2: target position

R1: first direction of rotation

R2: second direction of rotation

T1: first tooth part

T2: second tooth part

Detailed Description

Referring to fig. 1 to 2, fig. 1 is an external structural schematic diagram of a paper processing apparatus according to an embodiment of the invention. Fig. 2 is a schematic side view of the sheet processing apparatus shown in fig. 1. The sheet processing apparatus 1 of the present embodiment is, for example, disposed above or on both sides of a printing apparatus (not shown), and the sheet processing apparatus 1 is configured to process a plurality of sheets of paper fed from the printing apparatus, for example, to perform stapling, punching, or the like on the sheets of paper. As shown in fig. 1 and 2, the sheet processing apparatus 1 of the present embodiment includes a housing 10 and a platen 11. The housing 10 includes an outwardly extending paper platform 100, and the paper platform 100 is used for carrying a plurality of sheets of paper fed from the printing apparatus. The platen 11 includes a platen body 111, a driving assembly 112 and a linkage assembly 113. The platen 111 is disposed above the paper guide 100, and the platen 111 includes a platen 1110. Specifically, in the present embodiment, the housing 10 includes an upper housing 101 and a lower housing 102 assembled to each other, the lower housing 102 includes a paper placing platform 100 extending outward, and the driving element 112 and the linking element 113 are disposed on the upper housing 101. In the embodiment, the driving component 112 drives the linking component 113 to make the linking component 113 drive the paper pressing rod 111 to rotate relative to the paper placing platform 100, so that the paper pressing portion 1110 of the paper pressing rod 111 moves from the initial position to the target position, the paper pressing portion 1110 contacts with the paper on the paper placing platform 100 during the process of moving to the target position, and a guiding channel is defined between the paper pressing portion 1110 on the target position and the paper placing platform 100. The operation of the platen 11 of this embodiment will be described in more detail later.

The detailed configuration of the sheet processing apparatus 1 according to the embodiment of the present invention will be described further below.

As shown in fig. 2, the driving assembly 112 of the present embodiment includes a solenoid valve body 1121 and a solenoid rod 1122. The electromagnetic plunger 1122 is disposed inside the solenoid valve body 1121, and a portion of the electromagnetic plunger 1122 is exposed outside the solenoid valve body 1121. It should be noted that, in the present embodiment, the driving device 112 is composed of the solenoid body 1121 and the solenoid rod 1122, but the present invention is not limited to the kind of the driving device 112, and in other embodiments, the driving device 112 may use a motor as a means for driving the interlocking unit 113.

As shown in fig. 2, the housing 10 of the embodiment further includes a positioning shaft 103 and a fixing end 104, in the embodiment, the positioning shaft 103 and the fixing end 104 are both disposed on the upper housing 101, and the positioning shaft 103 is formed by being fastened to the upper housing 101 by screws, for example, but the invention is not limited thereto. The linking assembly 113 of the present embodiment includes a first spring link 1131, a second spring link 1132 and a first transmission member 1133. The first transmission member 1133 includes a first connection hole C1, a second connection hole C2 and a pivot portion C3, the first connection hole C1 is opposite to the second connection hole C2, that is, the first connection hole C1 and the second connection hole C2 are respectively disposed at two opposite sides of the first transmission member 1133, and the pivot portion C3 is located between the first connection hole C1 and the second connection hole C2. The first spring link 1131 is connected between the electromagnetic push rod 1122 of the driving assembly 112 (i.e. connected to a portion of the electromagnetic push rod 1122 exposed outside the electromagnetic valve body 1121) and the first connection hole C1 of the first transmission member 1133, the second spring link 1132 is connected between the fixed end 104 of the housing 10 and the second connection hole C2 of the first transmission member 1133, and the pivot portion C3 of the first transmission member 1133 is pivotally connected to the positioning shaft 103 of the housing 10.

As shown in fig. 2, the platen body 111 of the present embodiment further includes a second transmission member 1111. The second transmission member 1111 and the paper pressing portion 1110 are respectively disposed on two opposite sides of the paper pressing rod 111, and the second transmission member 1111 contacts the first transmission member 1133 of the linking assembly 113, in this embodiment, the first transmission member 1133 includes a plurality of first teeth T1, the second transmission member 1111 includes a plurality of second teeth T2, and the first teeth T1 and the second teeth T2 are engaged with each other, but the present invention is not limited to the first transmission member 1133 and the second transmission member 1111, in other embodiments, the first transmission member 1133 and the second transmission member 1111 are configured with each other in a cam manner or in a sliding slot manner, for example.

As shown in fig. 2, the sheet processing apparatus 1 of the present embodiment further includes a binding apparatus 12. The binding device 12 is disposed on the housing 10 and located on one side of the paper placing table 100, and the paper pressing device 11 is adjacent to the binding device 12. In the present embodiment, the binding device 12 is used to perform a binding operation on the sheets on the sheet placement platform 100. It should be noted that the above-mentioned configuration of the binding device 12 on one side of the paper platform 100 is only one embodiment of the present invention, but the present invention is not limited thereto, and in other embodiments, a punching device with punching function or a device with both binding function and punching function may be configured on one side of the paper platform 100.

The following describes the detailed operation of the paper processing apparatus 1 according to the embodiment of the present invention.

Referring to fig. 3 and 4, fig. 3 is a schematic structural view of the platen press device before operation in the present embodiment. Fig. 4 is a schematic structural diagram of the paper pressing device of the present embodiment after the paper pressing device is activated. It should be noted that, in order to express the operation of the platen 11 more clearly, the upper housing 101 is omitted in fig. 3 and 4. As shown in fig. 3, before the paper processing apparatus 1 of the present embodiment is operated, the paper pressing portion 1110 of the paper pressing lever 111 is located at the home position P1. As shown in fig. 4, when the solenoid valve body 1121 is in the energized state, the solenoid valve body 1121 drives the solenoid rod 1122 to move towards the first direction D1, the first spring link 1131 and the second spring link 1132 are simultaneously stretched in the process that the solenoid rod 1122 moves towards the first direction D1, the first transmission member 1133 is driven to rotate towards the first rotation direction R1 by using the positioning shaft 103 as a fulcrum through an elastic restoring force generated after the first spring link 1131 is stretched, and the first transmission member 1133 drives the second transmission member 1111 to rotate towards the second rotation direction R2 opposite to the first rotation direction R1, so as to drive the paper pressing rod 111 to rotate towards the second rotation direction R2, so as to move the paper pressing portion 1110 to the target position P2.

When the solenoid body 1121 is switched from the energized state shown in fig. 4 to the de-energized state shown in fig. 3, at this time, the electromagnetic push rod 1122 moves in a second direction D2 opposite to the first direction D1, and it should be noted that the movement of the electromagnetic push rod 1122 in the second direction D2 is caused by an elastic restoring force generated by a spring (not shown) sleeved on the electromagnetic push rod 1122 being released (the spring being compressed when the solenoid body 1121 is energized) to drive the electromagnetic push rod 1122 to move in the second direction D2. The electromagnetic push rod 1122 drives the first spring link 1131 to move in the second direction D2 in the process of moving in the second direction D2, the first transmission member 1133 is driven to rotate in the second rotation direction R2 by the acting force generated by the first spring link 1131 moving in the second direction D2 and the elastic restoring force of the second spring link 1132, and the first transmission member 1133 drives the second transmission member 1111 to rotate in the first rotation direction R1, and further drives the paper pressing rod 111 to rotate in the first rotation direction R1, so as to return the paper pressing portion 1110 to the initial position P1.

It should be noted that, since the paper pressing device 11 may malfunction or malfunction during the operation process, the paper enters the binding device 12 in a curled state for binding, in order to avoid the above-mentioned malfunction or malfunction, in an embodiment of the present invention, a sensor may be added to sense the operation of the paper pressing device 11, and if the paper pressing device 11 malfunctions or malfunctions, the paper is stopped from being fed into the binding device 12 according to the signal sensed by the sensor.

As shown in fig. 3 and 4, the sheet processing apparatus 1 of the present embodiment further includes a conveying roller assembly 13. The conveying roller assembly 13 is disposed on the housing 10 and above the paper placing platform 100, and specifically, the conveying roller assembly 13 is disposed on the lower housing 102. The transferring roller assembly 13 includes a rod 131 and a plurality of rollers 132 pivotally connected to the rod 131. In the embodiment, the platen 111 is pivotally connected to the rod 131, and when the platen 111 is driven by the linking assembly 113, the platen 111 rotates relative to the platen 100 with the rod 131 as a pivot. It should be noted that the present invention is not limited to the configuration position of the platen 111, and the configuration position of the platen 111 can be changed according to the requirement of the actual situation on the premise that the platen 111 can rotate relative to the paper platform 100.

Referring to fig. 5 to 7, fig. 5 to 7 are schematic operation diagrams of the paper pressing device for paper pressing and paper guiding in the present embodiment. As shown in fig. 5 to 7 and referring to fig. 3 and 4, the binding apparatus 12 of the present embodiment has a paper entrance opening 120, and the paper pressing apparatus 11 is located near the paper entrance opening 120, when a plurality of sheets of paper P are fed from the printing apparatus to the paper placing platform 100 of the paper processing apparatus 1, the driving assembly 112 of the paper pressing apparatus 11 drives the linking assembly 113 to make the linking assembly 113 drive the paper pressing rod 111 to rotate relative to the paper placing platform 100, so that the paper pressing portion 1110 of the paper pressing rod 111 moves to the target position P2, and the paper pressing portion 1110 contacts the paper P on the paper placing platform 100 and flattens the curled portion of the paper P (as shown in fig. 6) in the process that the paper pressing portion 1110 moves to the target position P2, at this time, a guiding channel G is defined between the paper placing platform 100 and the paper pressing portion 1110 on the target position P2. Then, the sheets P on the sheet placing table 100 pass through the guide path G and enter the binding device 12 through the sheet entrance opening 120 to perform the binding job (as shown in fig. 7).

As shown in fig. 6 and 7, the paper pressing portion 1110 of the paper pressing rod 111 of the present embodiment includes a paper pressing surface F facing the paper placing platform 100, the paper pressing surface F has a plane section F1 and a slope section F2 connected to each other, the plane section F1 is located near the binding device 12, the slope section F2 is located far away from the binding device 12, an equidistant channel G1 is defined between the plane section F1 and the paper placing platform, the slope section F2 inclines in a direction far away from the paper placing platform 100 and defines a non-equidistant channel G2 tapering in a direction close to the binding device 12 with the paper placing platform 100, and the guiding channel G includes the equidistant channel G1 and the non-equidistant channel G2. During the process that the paper P on the paper platform 100 passes through the guiding path G, the paper P will first pass through the tapered non-equidistant path G1, at this time, the curled part of the paper P will be pressed by the slope section F2 of the paper pressing surface F to gradually reduce the height of the curl, and then the paper P will pass through the equidistant path G1 and enter the binding device 12 through the paper entrance opening 120 for binding. It should be noted that the vertical height between the plane section F1 of the paper pressing surface F and the paper placing platform 100 and the vertical height between any point on the inclined plane section F2 and the paper placing platform 100 are both smaller than the width of the paper entering opening 120 of the binding device 12.

In summary, in the paper processing apparatus according to the embodiment of the invention, the paper pressing device presses the paper on the paper placing platform, and further the paper enters the binding device through the guiding space to perform the binding operation through the guiding channel defined between the paper pressing rod and the paper placing platform. The paper pressing device mainly comprises a paper pressing rod body, a driving assembly and a linkage assembly, the driving assembly and the linkage assembly drive the paper pressing rod body to rotate relative to the paper placing platform, and the paper pressing device can still smoothly press paper flat under the condition that the curling degree of the paper is overlarge or the rigidity of the paper is strong, so that the subsequent binding operation of the paper is facilitated. Moreover, the paper is guided through a guide channel defined between the paper pressing rod body and the paper placing platform, so that the paper cannot be jammed in the process of being fed into the binding device. In addition, under the structural design of the paper processing device, the volume of the whole device can be effectively reduced, and the manufacturing cost is reduced.

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made by the claims and the description of the present invention are still within the scope of the present invention. Moreover, not all objects or advantages or features disclosed herein are necessarily achieved by any one embodiment or claim of the invention. In addition, the abstract section and the title are provided for assisting the search of patent documents and are not intended to limit the scope of the present invention. Furthermore, the terms "first," "second," and the like, as used herein or in the appended claims, are used merely to name elements (elements) or to distinguish one embodiment or range from another, and are not intended to limit the upper or lower limit on the number of elements.

Claims

1. A sheet processing apparatus for processing a plurality of sheets fed from a printing apparatus, the sheet processing apparatus comprising:

a casing, including a paper platform extending outwards, the paper platform is used to load a plurality of pages of the paper; and

a paper pressing device comprising:

a paper pressing rod body, which is configured above the paper placing platform and comprises a paper pressing part;

a driving assembly disposed on the housing; and

a linkage assembly, configured between the driving assembly and the paper pressing rod, wherein the driving assembly drives the linkage assembly to drive the paper pressing rod to rotate relative to the paper placing platform, so that the paper pressing part moves from an initial position to a target position, the paper pressing part contacts a plurality of pages of paper in the process of moving to the target position, and a guide channel is defined between the paper pressing part and the paper placing platform at the target position;

the paper pressing device is arranged at one side of the paper placing platform, the paper pressing device is adjacent to the binding device, and a plurality of pages of the paper positioned on the paper placing platform enter the binding device through the guide channel to carry out binding operation;

the paper pressing part of the paper pressing rod body comprises a paper pressing surface facing the paper placing platform, the paper pressing surface is provided with a plane section and an inclined plane section which are connected with each other, the plane section is positioned at a position close to the binding device, the inclined plane section is positioned at a position far away from the binding device, an equidistant channel is defined between the plane section and the paper placing platform, the inclined plane section inclines towards a direction far away from the paper placing platform and defines a non-equidistant channel gradually reducing towards a direction close to the binding device with the paper placing platform, and the guide channel comprises a plurality of equidistant channels and non-equidistant channels;

in the process that a plurality of sheets of paper pass through the guide channel, the plurality of sheets of paper pass through the tapered non-equidistant channel, the curled parts of the plurality of sheets of paper are pressed by the inclined surface section of the paper pressing surface to enable the curled height to be gradually reduced, and then the plurality of sheets of paper enter the binding device through the equidistant channel to carry out the binding operation.

2. The sheet processing apparatus according to claim 1, wherein the driving assembly includes a solenoid valve body and an electromagnetic plunger, the electromagnetic plunger being disposed in the solenoid valve body, and a portion of the electromagnetic plunger being exposed outside the solenoid valve body.

3. The paper processing apparatus as claimed in claim 2, wherein the housing further comprises a positioning shaft and a fixing end, the linkage assembly comprises a first spring link, a second spring link, and a first transmission member, the first transmission member comprises a first connection hole, a second connection hole, and a pivot portion, the first connection hole and the second connection hole are opposite to each other, the pivot portion is located between the first connection hole and the second connection hole, the first spring link is connected between the electromagnetic push rod and the first connection hole of the first transmission member, the second spring link is connected between the fixing end and the second connection hole of the first transmission member, and the first transmission member is pivotally connected to the positioning shaft by the pivot portion.

4. The paper processing apparatus according to claim 3, wherein the platen further comprises a second transmission member contacting the first transmission member of the linkage assembly, when the solenoid valve body is in the energized state, the solenoid valve body drives the solenoid rod to move in a first direction, the first spring link and the second spring link are stretched during the movement of the solenoid rod in the first direction, the first transmission member is driven to rotate in a first rotation direction with the positioning shaft as a fulcrum by the elastic restoring force of the first spring link, and the first transmission member drives the second transmission member to rotate in a second rotation direction opposite to the first rotation direction, so as to drive the platen to rotate in the second rotation direction, thereby moving the platen to the target position.

5. The paper processing apparatus as claimed in claim 4, wherein the solenoid body is switched from the power-on state to the power-off state, the solenoid rod moves in a second direction opposite to the first direction, the first spring link is driven to move in the second direction during the movement of the solenoid rod in the second direction, the first transmission member is driven to rotate in the second rotation direction around the positioning shaft by the acting force generated by the movement of the first spring link in the second direction and the elastic restoring force of the second spring link, and the first transmission member drives the second transmission member to rotate in the first rotation direction, thereby driving the paper pressing rod to rotate in the first rotation direction and returning the paper pressing portion to the initial position.

6. The sheet processing apparatus of claim 4 wherein the first drive member includes a plurality of first teeth and the second drive member includes a plurality of second teeth, the plurality of first teeth and the plurality of second teeth being engaged with each other.

7. The paper processing apparatus as claimed in claim 1, further comprising a transmission roller assembly disposed above the paper platform and disposed in the housing, wherein the transmission roller assembly comprises a rod and a plurality of rollers pivotally connected to the rod, and the paper pressing rod is driven by the linkage assembly to rotate relative to the paper platform with the rod as a pivot.