TWM524025U - Paper feeding mechanism and scanning device thereof - Google Patents

Description

Paper feeding mechanism and scanning device thereof

The present invention relates to a paper feeding mechanism and a scanning device, in particular to a sheet feeding mechanism and a scanning device thereof.

Generally, the scanner includes a paper feed module, a paper feed module, and a scan module; after the user presses the start button, the paper feed module of the scanner will continuously perform the paper set in the paper clip. The paper picking operation is to continuously feed the paper in the paper clip to the paper feeding module, and the paper feeding module receives the paper conveyed by the paper feeding module and guides the paper into the scanning module.

A typical high-order scanner usually has two scanning modes, one of which is a continuous scanning mode and the other is a single preview scanning mode. In the continuous scan mode, the paper feed module will continuously feed the paper to be scanned in the paper clip to the paper feed module until there is no more paper to be scanned in the paper clip. However, in the single preview scan mode, the paper feed module will only take a single sheet of paper to be scanned from the paper clip and send it to the paper feed module, and the paper feed module will no longer send the paper in the paper clip to the paper feed module. Paper module.

In view of the present, a scanner with a single preview scan function is often used by an electronic clutch to prevent the paper feed module from taking out the paper to be scanned placed in the paper clip after taking out a single sheet of paper to be scanned. However, the electronic clutch has the problems of high cost, high noise, and easy damage. Therefore, how to make the scanner achieve the function of single preview scanning, and can effectively solve the above problems has become one of the important topics of related manufacturers.

Therefore, the author is concentrating on research and using the application of theory, and proposes a creation that is reasonable in design and effective in improving the above problems.

The main purpose of the present invention is to provide a paper feeding mechanism and a scanning device thereof, which are used to solve the technical problems existing in a conventional scanner that uses an electronic clutch to achieve a single preview scanning function.

In order to achieve the above object, the present invention provides a paper feeding mechanism comprising: a paper feeding module, a paper feeding module, a reverse module, a driving module and a control module. The paper feeding module comprises a paper feeding transmission unit, at least one paper feeding linkage unit and a paper feeding rolling unit, and the paper feeding transmission unit is connected to the paper feeding rolling unit through the paper feeding linkage unit; the paper feeding linkage unit can make the paper feeding rolling The unit rotates in a first direction with the paper feeding transmission unit, so that the paper feeding rolling unit drives a paper advancement, and the paper feeding linkage unit can prevent the paper feeding rolling unit from rotating in a second direction with the paper feeding transmission unit. The second direction is opposite to the first direction. The paper feeding module comprises two paper feeding transmission units, two paper feeding linkage units, a paper feeding transmission shaft and a paper feeding rolling unit, and two paper feeding transmission units pass through two paper feeding linkage units and a paper feeding transmission shaft When connected, the paper feeding rolling unit is connected with the paper feeding drive shaft, and each paper feeding linkage unit enables the paper feeding transmission shaft and the paper feeding rolling unit to follow the paper feeding transmission unit corresponding to each paper feeding linkage unit in the first direction Rotating, and each paper feeding linkage unit enables the paper feeding drive shaft and the paper feeding rolling unit to rotate in the second direction without the paper feeding transmission unit corresponding to each paper feeding linkage unit; the paper feeding rolling unit can be driven by the paper feeding When the unit rotates in the first direction, it can drive the paper to advance. The reverse module and the two paper feed transmission units are connected to each other, and the two paper feed transmission units can be rotated in different directions. The drive module can drive the paper feed transmission unit to rotate in the same direction as one of the paper feed transmission units. The control module can be used to detect the position of the paper to control the driving module. The control module can control the driving module to rotate from the first direction to the second direction when detecting the paper passing through the paper feeding module. Rotate.

In order to achieve the above object, the present invention further provides a scanning device, comprising: a paper feeding module, a paper feeding module, a reverse module, a driving module, a scanning module and a control module. The paper feeding module comprises a paper feeding transmission unit, at least one paper feeding linkage unit and a paper feeding rolling unit, and the paper feeding transmission unit is connected to the paper feeding rolling unit through the paper feeding linkage unit; the paper feeding linkage unit can make the paper feeding rolling Unit, follow-up The paper transmission unit rotates in a first direction, and causes the paper feed rolling unit to drive a paper advancement, and the paper feed linkage unit enables the paper feed scroll unit to rotate in a second direction with the paper feed transmission unit; the second direction is opposite to The first direction. The paper feeding module comprises two paper feeding transmission units, two paper feeding linkage units, a paper feeding transmission shaft and a paper feeding rolling unit, and two paper feeding transmission units pass through two paper feeding linkage units and a paper feeding transmission shaft When connected, the paper feeding rolling unit is connected with the paper feeding drive shaft, and each paper feeding linkage unit enables the paper feeding transmission shaft and the paper feeding rolling unit to follow the paper feeding transmission unit corresponding to each paper feeding linkage unit in the first direction Rotating, and each paper feeding linkage unit enables the paper feeding drive shaft and the paper feeding rolling unit to rotate in the second direction without the paper feeding transmission unit corresponding to each paper feeding linkage unit; the paper feeding rolling unit can be driven by the paper feeding When the unit rotates in the first direction, the paper is driven to advance. The reverse module and the two paper feed transmission units are connected to each other, and the two paper feed transmission units can be rotated in different directions. The drive module can drive the paper feed transmission unit to rotate in the same direction as one of the paper feed transmission units. The scanning module can take the paper passing through the paper feed module and scan the paper. The control module can be used to detect the position of the paper to control the driving module. The control module can control the driving module to rotate from the first direction to the second direction when detecting the paper passing through the paper feeding module. Rotate.

The beneficial effect of the present invention may be that the scanning device can achieve the function of single preview scanning without using the electronic clutch, and has relatively low cost, long service life, low damage rate and easy maintenance.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and description, and are not intended to limit the creation.

S‧‧‧ scanning device

1‧‧‧Feeding mechanism

10‧‧‧Shell structure

11‧‧‧Feed module

111‧‧‧Feed drive unit

112‧‧‧Feed linkage unit

1121‧‧‧Feed drive shaft

1122‧‧‧Feed one-way device

113‧‧‧Feed rolling unit

1131‧‧‧ Pickup roller

1132‧‧ ‧ separation roller

1133‧‧‧Auxiliary wheel

1134‧‧‧ Gear Set

12‧‧‧Feeding module

121, 121'‧‧‧Feed drive unit

122, 122'‧‧‧Feeding unit

123‧‧‧Feed drive shaft

124‧‧‧Feed Rolling Unit

125‧‧‧ paper roll unit

1251‧‧‧paper exit roller

1252‧‧‧ paper output drive shaft

1253‧‧‧Output linkage group

13‧‧‧Reverse module

131, 131’‧‧‧ gears

14‧‧‧Drive Module

141‧‧‧ drive gear

142‧‧‧Land

15‧‧‧Control Module

151‧‧‧Paper sensor

152‧‧‧Feeding sensor

153‧‧ Scan sensor

16‧‧‧Under scanning module

20‧‧‧Caps

21‧‧‧Up Scan Module

22‧‧‧ driven roller

23‧‧‧Annual module

30‧‧‧Base

40‧‧‧Feeding mechanism

P‧‧‧ to be scanned

W1‧‧‧ first direction

W2‧‧‧ second direction

V‧‧‧ Forward direction

Figure 1 is a schematic view of the scanning device of the present invention.

2 and 3 are exploded views of the scanning device of the present invention.

Figure 4 is a cross-sectional view of the scanning device of the present invention.

Figure 5 is a schematic view of the paper feed mechanism of the scanning device of the present invention.

6, 7, 8, and 9 are schematic exploded and combined views of a part of the paper feeding mechanism of the scanning device of the present invention.

Figure 10 is a side elevational view of Figure 4.

Figure 11 is a top plan view of Figure 5.

12 to 14 are schematic diagrams showing the first state of the flow of the scanning operation of the scanning device of the present invention.

15 to 17 are schematic diagrams showing a second state of the flow of the scanning operation of the scanning device of the present invention.

18 to 19 are schematic diagrams showing a third state of the flow of the scanning operation of the scanning device of the present invention.

Figure 20 is a side elevational view of another embodiment of the scanning device of the present invention.

The following is a specific example to illustrate the implementation of the paper feeding mechanism of the present invention and its scanning device, and those skilled in the art can easily understand other advantages and effects of the present invention by the contents disclosed in the present specification. The present invention may also be implemented or applied by other specific examples. The details of the present specification may also be based on different viewpoints and applications, and various modifications and changes may be made without departing from the spirit of the present invention. The drawing of this creation is only a brief description, and is not depicted in actual size, that is, the actual size of the relevant composition is not reflected, which will be described first. The following embodiments are intended to further explain the scope of this creation, but do not limit the scope of the creation in any way.

Please refer to FIG. 1 to FIG. 4 together, which is a schematic diagram of the scanning device of the present invention. As shown, the scanning device S includes a paper feeding mechanism 1, an upper cover mechanism 20, a base 30, and a paper feeding mechanism 40. The paper feeding mechanism 1 is disposed on the base 30, the upper cover mechanism 20 is disposed on the paper feeding mechanism 1, and the paper feeding mechanism 40 is disposed on one side of the paper feeding mechanism 1 for placing a plurality of sheets to be scanned. Wherein, the upper cover mechanism 20 faces one side of the paper feeding mechanism 1, and is provided with corresponding corresponding members corresponding to the paper feeding mechanism 1, such as the upper scanning module 21, the plurality of driven rollers 22, the offset module 23, and the like. . The upper cover mechanism 20, the base 30 and the paper feeding mechanism 40 shown in this embodiment are all exemplary. In the actual application, the setting position, appearance, and the like of the members are not limited to those shown in the drawings. The paper feed mechanism 1 will be described in detail below.

As shown in FIG. 3 to FIG. 5, the paper feeding mechanism 1 includes a casing structure 10, a paper feeding module 11, a paper feeding module 12, a reverse module 13, a driving module 14, and a control module. Group 15 and the next scanning module 16. The paper feeding module 11, the paper feeding module 12, the reverse module 13, the driving module 14, the control module 15, and the lower scanning module 16 are respectively disposed on the housing structure 10, and the housing structure 10 is used for corresponding fixing. a roller (the pickup roller 1131, the separation roller 1132, the auxiliary roller 1133, the paper feed roller unit 124, and the paper discharge roller) disposed between the upper cover mechanism 20 and the base 30 and the paper feed module 11 and the paper feed module 12 The unit 125) is exposed to the housing structure 10 to drive one of the sheets to be scanned (not shown) disposed in the paper feeding mechanism 40 to advance. The paper feeding module 11, the paper feeding module 12 and the lower scanning module 16 are sequentially disposed on one side of the paper feeding mechanism 40, so that the paper to be scanned disposed on the paper feeding mechanism 40 can be sequentially fed into the paper. The module 11, the paper feed module 12 and the lower scan module 16. In particular, in order to illustrate the scanning module, in the present embodiment, the upper scanning module 21 and the lower scanning module 16 are distinguished by the position of the scanning module. However, in practical applications, the two can be collectively referred to as Scanning module.

Further, referring to FIG. 5 to FIG. 7 , the paper feed module 11 includes a paper feed transmission unit 111 , a paper feed linkage unit 112 , and a paper feed scroll unit 113 . The paper feed linkage unit 112 includes a paper feed drive shaft 1121 and a paper feed one-way device 1122. The paper feed rolling unit 113 includes two paper take-up rollers 1131 and two paper separation rollers 1132 (FIG. 5). The two paper take-up rollers 1131 may be a transmission gear set 1134 (see FIG. 11) and two paper separation rollers. The 1132 is connected, whereby the pickup roller 1131 and the separation rollers 1132 can be rotated in the same direction by the gear set 1134. The paper feed transmission unit 111 is connected to one end of the paper feed drive shaft 1121, the two paper feed rollers 1132 are connected to the paper feed one-way device 1122, and the paper feed one-way device 1122 is connected to the other end of the paper feed drive shaft 1121.

Specifically, in FIG. 6, the two paper feed rollers 1132 (through the paper feed one-way device 1122) are connected to the paper feed drive shaft 1121 as an example, but are not limited thereto; In other embodiments, the paper feed shaft 1121 can be connected (via the paper feed one-way device 1122) to the two paper take-up rollers 1131 (shown in FIG. 5); and in other applications, The paper feed linkage unit 112 may include two paper feed drive shafts 1121, and the two paper take-up rollers 1131 and the two paper feed rollers 1132 respectively pass through the two paper feed one-way devices 1122 and the two paper feed drive shafts 1121. The two paper feed transmission shafts 1121 are directly connected to the two paper feed transmission units 111 or the transmission gear unit and the paper feed transmission unit 111, and are driven to rotate by the paper feed transmission unit 111. In the embodiment of the present invention, the paper feed transmission unit 111 is a gear, and the paper feed one-way device 1122 is an overrunning clutch. Of course, the paper feed one-way device can be any kind to limit its corresponding The one-way device that rotates the relevant member, such as a one-way bearing, a one-way ratchet, or the like, is not limited to the above-described overrunning clutch.

In this embodiment, the paper feed rolling unit 113 includes two paper take-up rollers 1131 and two paper separation rollers 1132 as an example, but is not limited thereto. In other embodiments, the paper feed scroll unit 113 is also It may be a roller having only a single set for picking and separating paper (for example, a component paper roller having only a relatively large diameter). It is to be noted that the paper feed one-way device 1122 is disposed between the paper feed rolling unit 113 and the paper feed drive shaft 1121. When the paper feed drive shaft 1121 rotates, the paper feed scroll unit 113 is selectively linked. That is, when the paper feed transmission unit 111 rotates, the paper feed drive shaft 1121 will rotate synchronously with the paper feed transmission unit 111, and the paper feed scroll unit 113 will selectively follow the paper feed transmission direction depending on the rotation direction of the paper feed drive shaft 1121. The shaft 1121 rotates.

In another aspect, the paper feed one-way device 1122 may be disposed between the paper feed transmission unit 111 and the paper feed transmission shaft 1121, and between the paper feed rolling unit 113 and the paper feed transmission shaft 1121, A paper feed one-way device 1122 is provided. When the paper feed transmission unit 111 rotates, the paper feed drive shaft 1121 will be selectively linked, that is, the paper feed drive shaft 1121 will select the rotation direction of the paper feed transmission unit 111, and select The paper feed drive shaft 1121 is rotated, and the paper feed rolling unit 113 rotates with the paper feed drive shaft 1121.

The paper feed module 12 includes two paper feed transmission units 121, 121', two paper feed linkage units 122, 122', a paper feed drive shaft 123, and a paper feed scroll unit 124. The two paper feed transmission units 121, 121' are connected to one end of the paper feed transmission shaft 123 via two paper feed linkage units 122, 122', and the paper feed scroll unit 124 (for example, a roller) is disposed on the paper feed transmission shaft 123. another side. In the embodiment of the present invention, the two paper feed transmission units 121, 121' are disposed adjacent to the paper feed transmission unit 111, and the paper feed scroll unit 124 is disposed adjacent to the paper feed scroll unit 113 as an example, but not limited thereto. In other embodiments, the two paper feed transmission units 121, 121' may also be disposed side by side at one end of the paper feed transmission shaft 123, and the two paper feed transmission units 121, as shown in the drawings of the embodiment. 121' may be connected to the paper feed drive shaft 123 through any form (for example, a gear set), which is not limited herein.

Specifically, the two paper feed linkage units 122, 122' are overrunning clutches. Of course, the paper feed one-way device can be any one-way one that can limit the rotation direction of the corresponding member corresponding thereto. The device, such as a one-way bearing, a one-way ratchet, or the like, is not limited to the above-described overrunning clutch. When the two paper feed linkage units 122, 122' restrict the corresponding paper feed transmission units 121, 121' from rotating in the same direction, they can be engaged with the paper feed transmission shaft 1121, and are rotated by the paper feed transmission shaft 1121. . That is, any of the paper feed transmission units 121 (121') can be engaged with the paper feed drive shaft 123 through the paper feed linkage unit 122 (122') when rotated in a (first) direction (described in detail later). And according to the paper feed drive shaft 123, and any of the paper feed transmission units 121 (121') rotate in a direction opposite to the (first) direction (second direction), the corresponding paper feed linkage The unit 122 (122') will not engage with the paper feed drive shaft 123, and the paper feed drive shaft 123 will not rotate with the paper feed transmission unit 121 (121') in the (second) direction.

The reverse module 13 includes two gears 131, 131' for connecting the two paper feed transmission units 121, 121', so that the two paper feed transmission units 121, 121' can be rotated when interlocked. Rotate in the opposite direction; of course, the number of gears in actual application is not limited to two, as long as it is an even number. Specifically, in the embodiment of the present embodiment, the reverse module 13 is further connected between the paper feed transmission unit 111 and the paper feed transmission unit 121, so that the paper feed transmission unit 111 and the paper feed transmission unit 121 can be synchronized. Rotating in the same direction, that is, between the paper feed transmission unit 111 and the paper feed transmission unit 121, It may be a gear 131 connected with a single number of reverse modules 13; of course, this is only a preferred embodiment, and in actual application, it may be changed according to requirements, so that the paper feed transmission unit 111 It is within the scope of the present invention to be able to rotate in the same direction in synchronization with the paper feed transmission unit 121, that is, as long as the paper feed transmission unit 111 and the paper feed transmission unit 121 can be rotated in the same direction in synchronization.

The driving module 14 includes a motor (not labeled), a driving gear 141 and a belt 142. The driving module 14 is directly or indirectly connected to the paper feeding module 11 and the paper feeding module 12, and can drive the paper feeding module 11 And a paper feed transmission unit 111 in the paper feed module 12 and a paper feed transmission unit 121 (121'). In this embodiment, the motor drives one of the paper feed transmission units 121 (121') through the drive gear 141 and the belt 142, and the drive module 14 drives the paper feed transmission through the connection of the reverse module 13. At the same time as the unit 121 (121'), the paper feed transmission unit 111 can be driven synchronously. In other words, the driving module 14 drives the paper feeding module 11 and the paper feeding module 12 at the same time, and the paper feeding transmission unit 111 and the paper feeding transmission unit 121 rotate synchronously. Of course, in other implementations, the driving module 14 can directly drive the paper feeding module 11 and the paper feeding module 12, for example, the motor simultaneously passes through the belt, and connects the paper feeding transmission unit 111 and the paper feeding transmission unit 121. Instead of driving the paper feed module 11 indirectly through the reverse module 13. In contrast, any of the driving modules 14 can simultaneously drive the paper feeding module 11 and the paper feeding module 12, and the paper feeding transmission unit 111 and the paper feeding transmission unit 121 can synchronously rotate in the same direction. The scope of implementation of the creation.

Referring to FIG. 8 and FIG. 9 , in the embodiment, the driving relationship between the driving module 14 , the paper feeding module 12 and the paper feeding module 11 is: the motor (the driving module 14 ) drives one of the paper feeding transmissions. The unit 121 (121') rotates, and the paper feed transmission unit 121 (121') is further rotated by the two gears 131, 131' in the reverse module 13 to rotate the other paper feed transmission unit 121' (121). One of the gears 131 of the reverse module 13 simultaneously rotates the paper feed transmission unit 111. In other words, when the motor of the drive module 14 rotates, the gears 131, 131' in the paper feed transmission unit 111, the paper feed transmission units 121, 121', and the reverse module 13 are rotated together.

It should be noted that, referring to FIG. 5, the paper feeding mechanism 1 may further include a paper ejection unit 125, which may include a plurality of paper output rollers 1251, and a plurality of paper output rollers 1251 may be used to assist in feeding the paper to be scanned. Paper feeding mechanism 1. A plurality of paper discharge rollers 1251 are disposed at a position where the paper feeding mechanism 1 is away from the paper feeding mechanism 1 and the paper feeding mechanism 40 (shown in FIG. 2 ), and the plurality of paper discharge rollers 1251 may be adjacent to the lower scanning module 16 . Preferably, a plurality of paper exit rollers 1251 may be provided corresponding to the plurality of paper feed scroll units 124. In a practical application, the plurality of paper output rollers 1251 may be driven wheels or driven driving wheels, for example, may be connected to a plurality of paper feeding rolling units 124, and linked by the paper feeding rolling units 124. Rotate in the same direction in synchronization with the paper feed scroll units 124.

Please refer to FIG. 4 and FIG. 10 together. FIG. 10 is a side view of FIG. 4 (some components are omitted). As shown in the figure, the paper-receiving module 23 of the upper cover mechanism 20 is disposed corresponding to the pickup roller 1131, and the two are used together to take out the paper to be scanned disposed in the paper feed mechanism 40. The separation roller 1132 is disposed corresponding to one of the driven rollers 22 of the upper cover mechanism 20, and the two are used together to move a single sheet of paper to be scanned (not shown) to the upper scanning module 21 and the lower scanning module 16 . The paper feed rolling unit 124 and the paper discharge roller 1251 are respectively disposed corresponding to the other two driven rollers 22 of the upper cover mechanism 20, and the paper feed rolling unit 124 and its corresponding driven roller 22 and the paper discharge roller 1251 and The corresponding driven rollers 22 are respectively located on both sides of the upper scanning module 21 and the lower scanning module 16, and the rollers can enable the paper to be scanned to enter the upper scanning module 21 and the lower scanning module 16, and After the scanning is completed, the paper to be scanned is sent out to the paper feeding mechanism 1.

Referring to FIG. 10, FIG. 5 and FIG. 2, the control module 15 of the paper feeding mechanism 1 includes a paper take-up sensor 151, a paper feed sensor 152 and a scanning sensor 153. To sense the location of the paper to be scanned. Specifically, the paper pick-up sensor 151 is disposed adjacent to the paper pick-up roller 1331 and the corresponding paper-receiving module 23 for sensing whether the paper to be scanned is placed in the paper feeding mechanism 40. Used to sense the position of the paper head of the paper to be scanned.

Please refer to FIG. 11 and FIG. 5 together: FIG. 11 is a top view of the paper feeding mechanism 1 of FIG. Intent (some components are omitted). As shown in the figure, two pickup rollers 1131, two separation rollers 1132 and auxiliary rollers 1133 (shown in FIG. 5, which are omitted from FIG. 11) may be connected to each other through a gear set 1134, and the gear set 1134 is connected. Then, the paper feed drive shaft 1121 is connected, and the paper take-up roller 1131, the paper feed roller 1132 and the auxiliary roller 1133 can be driven to rotate in the same direction according to the transmission of the gear set 1134.

Further, the paper discharge rolling unit 125 includes a paper discharge drive shaft 1252 and a paper discharge linkage group 1253 in addition to the two paper discharge rollers 1251. Two paper exit rollers 1251 are disposed on the paper output drive shaft 1252, and the paper discharge drive shaft 1252 is connected to the paper feed drive shaft 123 through the paper discharge linkage group 1253, and the paper discharge drive shaft 1252 and the two paper discharge rollers 1251 are The paper feed drive shaft 123 can be rotated in the same direction in synchronization. Of course, in other implementations, the paper ejection rolling unit 125 may be driven by other means, and rotate in the same direction synchronously with the paper feed drive shaft 123, for example, may be driven by another independent drive motor, or The paper feed transmission unit 121 (121') is connected or the like, and is not limited to the one shown in the drawing of the embodiment.

Referring to FIG. 12 to FIG. 19 together, the operation flow of the scanning device S and the paper feeding mechanism 1 of the present invention will be described in detail below. For the sake of clarity, the operation flow of the single sheet feeding scanning is divided into three states. FIG. 12 to FIG. 14 are schematic diagrams of the first state of the actuation flow; FIG. 15 to FIG. 17 are schematic diagrams of the second state of the actuation flow; FIG. 18 and FIG. 19 are schematic diagrams of the third state of the actuation flow.

First, referring to FIG. 12 to FIG. 14, when the user sets a stack of to-be-scanned paper P in the paper feeding mechanism 40 (as shown in FIG. 2) and starts the single scanning mode, the motor (not shown) will be The driving gear 141 is rotated in the first direction W1 (ie, counterclockwise in the drawing), and the paper feeding transmission unit 121 is rotated by the belt 142 to rotate in the first direction W1, and the paper feeding transmission unit 121 is transmitted through the reverse module 13 The gear 131 is linked to the paper feed transmission unit 111 and the paper feed transmission shaft 1121 connected thereto in the first direction W1.

At this time, the paper feed transmission unit 121, the paper feed linkage unit 122 (shown in FIG. 7) and the paper feed drive shaft 123 are engaged with each other, and the paper feed transmission unit 121 is accordingly The movable paper feed shaft 123 and the two paper feed rolling units 124 provided thereon are synchronously rotated in the first direction W1. The paper feed rolling unit 113 (the pickup roller 1131 and the paper feed roller 1132), the paper feed linkage unit 112 (shown in FIG. 7), and the paper feed drive shaft 1121 are also engaged with each other, and with the paper feed drive shaft 1121 and The paper transmission unit 111 rotates in the first direction W1.

In addition, the gear 131 of the reverse module 13 will simultaneously interlock the other gear 131', and the linked paper feed transmission unit 121' rotates in a second direction W2 (ie, clockwise direction in the drawing) opposite to the first direction W1; At this time, since the paper feed transmission unit 121' and the paper feed linkage unit 122' (shown in FIG. 7) connected thereto are not engaged with the paper feed transmission shaft 123, the paper feed transmission unit 121' will be opposite to the delivery. The paper drive shaft 123 is idling.

Briefly, in the first state of the single-feed scanning mode, the scanning device S of the present invention rotates the motor of the driving module 14 in the first direction W1, and drives the paper feeding transmission unit 121 and the paper feeding transmission accordingly. The shaft 123, the two paper feed rolling units 124, the paper feed transmission unit 111, and the paper feed rolling unit 113 (the pickup roller 1131 and the paper feed roller 1132) are rotated in the first direction W1. Thereby, the paper take-up roller 1131 and its corresponding driven roller 22 will take out one of the papers to be scanned disposed in the paper feeding mechanism 40 (shown in FIG. 4), and pass through the paper separation roller 1132 and its corresponding slave. The roller 22 and the paper feed rolling unit 124 and the corresponding driven roller 22 are conveyed toward the position direction of the upper scanning module 21 and the lower scanning module 16 (and the forward direction V in the drawing). In the first state, the paper feed transmission unit 121' that rotates in the second direction W2 is in a state of being rotated (idle) with respect to the paper feed transmission shaft 123.

Referring to FIG. 15 to FIG. 17 , when the paper head of the paper to be scanned passes through the scanning sensor 153 (or the paper feeding sensor 152 ), the control module (not shown) will control the driving module 14 . The motor is rotated by rotating in the first direction W1 to rotate in the second direction W2. At this time, the motor rotating in the second direction W2 rotates the paper feed transmission unit 121 in the second direction W2. At this time, the paper feed linkage unit 122 is disposed between the paper feed transmission unit 121 and the paper feed transmission shaft 123. (As shown in FIG. 7), the paper feed transmission unit 121 will not be engaged with the paper feed drive shaft 123, so that the paper feed drive shaft 123 will not be sent. The paper transmission unit 121 rotates in the second direction W2, but rotates in the first direction W1 with the paper feed transmission unit 121'.

The driven paper feed transmission unit 121 simultaneously transmits the paper feed transmission unit 121' to the first direction W1 through the two gears 131, 131' of the reverse module 13, at this time, the paper feed transmission unit 121', the paper feed The interlocking unit 122' (shown in FIG. 7) and the paper feed drive shaft 123 are engaged with each other, and the paper feed drive shaft 123 is rotated by the paper feed transmission unit 121' in the first direction W1. That is, in the second state of the sheet feeding scan, the sheet feeding drive shaft 123 is driven by the sheet feeding transmission unit 121' to rotate in the first direction W1, and the two sheet feeding rolling units 124 Then, the paper feed drive shaft 123 is rotated in the first direction W1.

When the gear 131 in the reverse module 13 is driven to rotate by the paper feed transmission unit 121, the paper feed transmission unit 111 is simultaneously driven to rotate in the second direction W2, and the paper feed transmission shaft 1121 is rotated in the second direction W2. At this time, the paper feed drive shaft 1121, the paper feed one-way device 1122 (shown in FIG. 7), and the paper feed scroll unit 113 (the pickup roller 1131 and the paper feed roller 1132) will not be engaged with each other; The paper feed drive shaft 1121 rotating in the two directions W2 will be in an idling state with respect to the paper separation rollers 1132 and the paper take-up rollers 1131), that is, the two paper feed rollers 1132 (and the paper take-up roller 1131) will not The paper feed transmission unit 111 rotates in the second direction W2. In other words, when the paper feeding mechanism 1 is in the second state (the motor is rotated in the first direction W1 to the second direction W2), the paper feed rolling unit 113 (the pickup roller 1131 and the paper separation roller 1132) will be first The direction W1 is rotated to stop the rotation, and the paper feed rolling unit 113 and its corresponding driven roller 22 will stop taking out the paper P to be scanned which is set in the paper feed mechanism 40 (shown in FIG. 4).

Specifically, since the two paper feed rollers 1132 are in a state of being immovable with respect to the paper feed drive shaft 1121 rotating in the second direction W2, as shown in FIG. 16, the paper feed mechanism 1 is in the second state, If the paper to be scanned does not completely pass through the two paper take-up rollers 1131 or the two paper feed rollers 1132, the two paper take-up rollers 1131 and the two paper feed rollers 1132 will be presented through the paper feed one-way device 1122. Be driven The status of the wheel.

Finally, referring to FIG. 18 and FIG. 19, in the third state, when the end (paper tail) of the paper P to be scanned passes the scanning sensor 153 (or the paper feed sensor 152), the motor is The rotation may be selectively rotated from the second direction W2 to the first direction W1 according to the user's demand, and the two paper feed rolling units 113 may be rotated again in the first direction W1, and again to the paper feeding mechanism 40. A single sheet of paper P to be scanned is taken out; or, the motor may be stopped directly after the paper to be scanned is scanned.

In summary, the operation of the scanning device S and the paper feeding mechanism 1 of the present invention is simply that when the scanning device S is in the paper feeding scanning mode, the control module controls the motor and its related components to the first The direction W1 is rotated, and the paper take-up roller 1131, the paper separation roller 1132, and the paper feed scroll unit 124 are directly or indirectly rotated in the first direction W1 to take out a single sheet of paper to be scanned by the paper feeding mechanism 40, and transmit it to the upper and lower sides. The scanning modules 21, 16 perform scanning. When the paper head of the paper P to be scanned passes the scanning sensor 153 (or the paper feeding sensor 152), the control module will control the motor to reverse (rotate in the second direction W2), according to the direct or indirect The paper take-up roller 1131 and the paper separation roller 1132 are stopped from rotating to stop the paper to be scanned of the paper feeding mechanism 40, and the paper feed rolling unit 124 is continuously rotated in the first direction W1 to continuously move the paper P to be scanned. The lower scanning module 21, 16 transmits in the direction until the paper to be scanned is scanned, and the control module controls the motor to stop or rotate (rotate in the first direction W1) according to the user's demand to take out the next paper to be scanned. Scan. In addition, it is particularly emphasized that the above embodiment is an example in which the paper feeding mechanism of the present invention is applied to a scanning device, but in actual implementation, the paper feeding mechanism may also be applied to a printer, a photocopier, etc. according to requirements. In the machine having the paper feeding function, the scanning device referred to herein may be a scanner having only a scanning function, or a scanning device integrated in a related machine such as a printer or a photocopier. No restrictions.

In a special application, the control module may also directly determine the position of the paper head of the paper to be scanned according to the rolling speed of the paper take-up roller 1131, the paper separation roller 1132 and the paper feed scroll unit 124, to determine that the control motor is first. Direction W1 rotation is converted into a point in time of rotating in the second direction W2; that is, in other applications, the position of the paper to be scanned may be sensed without using a plurality of sensors, and the control module 15 may directly control the motor at a preset time. Reverse.

Referring to FIG. 20, in other embodiments, the paper feed rolling unit 113 of the paper feed module 11 may also include only one roller, and at the same time, perform the operations of separating and picking paper. The remaining related components and the manner of actuation thereof are the same as those of the foregoing embodiment, and details are not described herein again.

The above description is only a preferred and feasible embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Therefore, any equivalent technical changes made by using the present specification and the contents of the schema are included in the scope of protection of the present creation. .

1‧‧‧Feeding mechanism

11‧‧‧Feed module

111‧‧‧Feed drive unit

112‧‧‧Feed linkage unit

1121‧‧‧Feed drive shaft

1122‧‧‧Feed one-way device

113‧‧‧Feed rolling unit

1132‧‧ ‧ separation roller

12‧‧‧Feeding module

121, 121'‧‧‧Feed drive unit

123‧‧‧Feed drive shaft

124‧‧‧Feed Rolling Unit

13‧‧‧Reverse module

131, 131’‧‧‧ gears

14‧‧‧Drive Module

141‧‧‧ drive gear

142‧‧‧Land

Claims (14)

A paper feeding mechanism comprising: a paper feeding module comprising a paper feeding transmission unit, at least one paper feeding linkage unit and a paper feeding rolling unit, and the paper feeding transmission unit transmits the paper feeding unit through the paper feeding unit Rolling units are connected to each other; the paper feed linkage unit enables the paper feed rolling unit to rotate in a first direction with the paper feed transmission unit, so that the paper feed scroll unit drives a paper advancement, and the paper feed linkage unit can The paper feed rolling unit is not rotated in a second direction with the paper feed transmission unit; the second direction is opposite to the first direction; a paper feed module includes two paper feed transmission units, and two feeds a paper linkage unit, a paper feed drive shaft and a paper feed scroll unit, wherein the two paper feed transmission units are connected to the paper feed drive shaft through the two paper feed linkage units, the paper feed scroll unit and the paper feed transmission The paper feed linkage unit is configured to enable the paper feed drive shaft and the paper feed scroll unit to rotate in the first direction with the paper feed transmission unit corresponding to each paper feed linkage unit, and each of the paper feed transmission units Paper feed linkage unit can The paper feed drive shaft and the paper feed rolling unit do not rotate with the paper feed transmission unit corresponding to each paper feed linkage unit in the second direction; the paper feed scroll unit can be coupled to the paper feed transmission unit When the first direction is rotated, the paper can be driven forward; a reverse module is connected to the two paper feed transmission units, and the two paper feed transmission units can be rotated in different directions; a driving module, The driving unit can drive the paper feeding transmission unit to rotate in the same direction; and a control module can be used for detecting the position of the paper to control the driving module; the control module When detecting that the paper passes through the paper feeding module, the driving module is controlled to rotate from the first direction to the second direction. The paper feed mechanism of claim 1, wherein the paper feed linkage unit comprises a paper feed one-way device and a paper feed drive shaft, and the paper feed transmission unit and the paper feed drive shaft pass through the paper feed one-way device Connecting, the paper feed rolling unit and the paper feed one-way device are connected to each other; the paper feed drive shaft can rotate with the paper feed transmission unit in the first direction or the second direction; the paper feed transmission unit and the paper feed When the driving shaft rotates in the first direction, the paper feeding one-way device and the paper feeding transmission shaft and the paper feeding rolling unit are engaged with each other, and the paper feeding rolling unit is linked with the paper feeding transmission unit to the first direction Rotating; when the paper feed transmission unit rotates in the second direction, the paper feed one-way device does not engage with the paper feed drive shaft or the paper feed scroll unit, and the paper feed scroll unit does not follow the paper feed drive The unit rotates in the second direction. The paper feed mechanism of claim 2, wherein the paper feed linkage unit comprises two paper feed ones, the paper feed scroll unit comprises a paper take-up roller and a paper feed roller, the paper take-up roller and the paper feed roller The separation roller is coupled to the paper feed drive shaft through the two paper feed ones. The paper feed mechanism of claim 1, wherein the paper feed linkage unit comprises a paper feed one-way device and a paper feed drive shaft, and the paper feed scroll unit and the paper feed drive shaft pass through the paper feed one-way device Connecting, the paper feed transmission unit is connected to the paper feed one-way device; when the paper feed transmission unit rotates in the first direction, the paper feed one-way device and the paper feed transmission unit and the paper feed drive shaft are mutually engaged And rotating the paper feed rolling unit to rotate in the first direction; when the paper feed transmission unit rotates in the second direction, the paper feed one-way device does not engage with the paper feed transmission unit or the paper feed drive shaft And the paper feed rolling unit does not rotate in the second direction with the paper feed transmission unit. The paper feed mechanism of claim 1, wherein the reverse module comprises an even number of gears, two of which are respectively connected to the two paper feed transmission units. The paper feed mechanism of claim 5, wherein the paper feed transmission unit is connected to one of the paper feed transmission units through a plurality of the gears in the reverse module Pick up. The paper feeding mechanism of any one of claims 1 to 6, wherein the control module comprises at least one sensor disposed between the paper feeding module and the paper feeding module or the The paper module is remote from the side of the paper feeding module, and the sensor is configured to detect the paper head position of the paper, so that the control module controls the steering of the driving module. A scanning device comprising: a paper feed module comprising a paper feed transmission unit, at least one paper feed linkage unit and a paper feed scroll unit, the paper feed transmission unit and the paper feed roller through the paper feed linkage unit The paper feed linkage unit enables the paper feed rolling unit to rotate with the paper feed transmission unit in a first direction, so that the paper feed scroll unit drives a paper advancement, and the paper feed linkage unit can The paper feed rolling unit does not rotate with the paper feed transmission unit in a second direction; the second direction is opposite to the first direction; a paper feed module includes two paper feed transmission units and two paper feeds a linkage unit, a paper feed drive shaft and a paper feed scroll unit, wherein the two paper feed transmission units are connected to the paper feed drive shaft through the two paper feed linkage units, the paper feed scroll unit and the paper feed drive shaft Connected to each other, and the paper feed linkage unit enables the paper feed drive shaft and the paper feed scroll unit to rotate in the first direction with the paper feed transmission unit corresponding to each paper feed linkage unit, and each of the feed rollers Paper linkage unit can The paper feed drive shaft and the paper feed rolling unit do not rotate with the paper feed transmission unit corresponding to each paper feed linkage unit in the second direction; the paper feed scroll unit can be coupled to the paper feed transmission unit When the first direction is rotated, the paper is advanced; a reverse module is connected to the two paper feed transmission units, and the two paper feed transmission units can be rotated in different directions; a driving module, The paper feed transmission unit can be driven to rotate in the same direction as one of the paper feed transmission units; a scanning module capable of receiving the paper passing through the paper feeding module and scanning the paper; and a control module capable of detecting the position of the paper to correspondingly control the driving module The control module can control the driving module to rotate from the first direction to the second direction when detecting the paper passing through the paper feeding module. The scanning device of claim 8, wherein the paper feed linkage unit comprises a paper feed one-way device and a paper feed drive shaft, and the paper feed transmission unit is connected to the paper feed drive shaft through the paper feed one-way device The paper feed rolling unit and the paper feed one-way device are connected to each other; the paper feed drive shaft can rotate with the paper feed transmission unit in the first direction or the second direction; the paper feed transmission unit and the paper feed transmission When the axial direction rotates in the first direction, the paper feed one-way device and the paper feed drive shaft and the paper feed rolling unit are engaged with each other, and the paper feed rolling unit is linked to rotate with the paper feed transmission unit in the first direction When the paper feed transmission unit rotates in the second direction, the paper feed one-way device does not engage with the paper feed drive shaft or the paper feed scroll unit, and the paper feed scroll unit does not follow the paper feed drive unit Rotate in the second direction. The scanning device of claim 9, wherein the paper feed linkage unit comprises two of the paper feed one-way devices, the paper feed scroll unit comprises a paper take-up roller and a paper separation roller, the paper take-up roller and the minute The paper roller is coupled to the paper feed drive shaft through the two paper feed ones. The scanning device of claim 8, wherein the paper feed linkage unit comprises a paper feed one-way device and a paper feed drive shaft, and the paper feed rolling unit is connected to the paper feed drive shaft through the paper feed one-way device The paper feed transmission unit is connected to the paper feed one-way device; when the paper feed transmission unit rotates in the first direction, the paper feed one-way device and the paper feed transmission unit and the paper feed drive shaft are engaged with each other And the paper feed rolling unit is rotated in the first direction; when the paper feed transmission unit rotates in the second direction, the paper feed one-way device does not cooperate with the paper feed transmission unit or the paper feed unit The drive shafts are engaged with each other, and the paper feed rolling unit does not rotate in the second direction with the paper feed transmission. The scanning device of claim 8, wherein the reverse module comprises an even number of gears, two of which are respectively connected to the two paper feed transmission units. The scanning device of claim 12, wherein the paper feed transmission unit is coupled to one of the paper feed transmission units via a single one of the plurality of gears in the reverse module. The scanning device of any one of claims 8 to 13, wherein the control module comprises at least one sensor disposed between the paper feed module and the paper feed module or the paper feed The module is located away from the side of the paper feeding module, and the sensor is configured to detect the position of the paper head of the paper, so that the control module controls the steering of the driving module.