CN200969620Y - Double-sided paper feeding device with power-free switching parts - Google Patents

Abstract

A double-sided paper feeding device with a power-free switching piece comprises a paper feeding channel, a turnover channel, a shunting channel and a switching unit, wherein the paper feeding channel is positioned in a machine shell unit, the turnover channel corresponds to the paper feeding channel, the shunting channel is communicated with the paper feeding channel and the turnover channel, and the switching unit corresponds to the shunting channel. A switching piece of the switching unit is controlled to be opened and closed in a power-free mode, and accordingly, the effects of simplifying components and reducing cost can be achieved.

Description

Double-sided paper feeding device with power-free switching parts

technical field

The utility model relates to a paper-feeding device structure of an office machine, in particular to a double-sided paper-feeding device with power-free switching parts.

Background technique

As shown in Fig. 1, existing a kind of automatic paper-feeding device (the No. 94135164 application of the applicant TW) comprises a casing unit 1, a first paper-feeding channel 2 arranged inside the casing unit 1, a A second paper passage 2' that is docked with the first paper passage 2, an inversion passage 2" above the second paper passage 2', a second paper passage 2' that can be connected to The shunt channel 3 of the turning channel 2", a pair of paper feed rollers 4 corresponding to the first paper transport channel 2, a first transport roller set 4' set in the first paper transport channel 2, a set of rollers located in the first paper transport channel 2, The second transport roller group 4" in the second paper path 2', a third transport roller set 5 in the turning path 2", a third transport roller set 5 in the second paper path 2' and the turning path The paper discharge roller group 5' between the surface channels 2", a switching unit 6 arranged inside the paper discharge roller group 5', and an induction unit 7. The switching unit 6 has an introduction The first switching pawl 6 ′ on one side of the port 301 and the second switching pawl 6 ″ pivotally arranged on one side of an outlet port 302 .

When performing double-sided scanning, when a first sensor 7' of the sensor unit 7 senses a front end of the paper, it can first control the first and second switching claws 6', 6" to swing to block the second The paper-feeding channel 2' and the reverse channel 2", and the second paper-feed channel 2' and the shunt channel 3 are unimpeded, and the upper delivery port 201" of the shunt channel 3 and the reverse channel 2" is unimpeded (as indicated by the solid line As shown), the paper will be scanned by a scanning unit 8, then it will be transferred from the second paper feeding channel 2' to the shunt channel 3, then it will be transferred to the turning channel 2" in an oblique direction, and finally it will be sent out from the upper port 201" export. And after one end of the paper is sensed by a second sensing part 7" of the sensing unit 7, the first and second switching claws 6', 6" will be controlled to swing, and make the inlet port 301, The outlet ports 302 are respectively blocked (as shown by phantom lines), and the paper can be transported from the inversion channel 2 ″ toward the first paper transport channel 2 , and the scanning of the back side is continued.

Although, with the arrangement of the switching unit 6, the paper conveying direction can be switched to achieve the purpose of double-sided paper feeding, but the switching action of the first and second switching claws 6', 6" must use an electromagnetic actuator Separate control, as a result, the cost will be higher.

Contents of the invention

Therefore, the purpose of this utility model is to provide a double-sided paper feeding device with a power-free switching part, to overcome the above-mentioned defects of the traditional structure, and to change the feeding direction by utilizing the thrust of the paper feeding and the restoring elasticity of the member itself, so as to reduce the Setup and cost reduction of drive components.

The technical solution of the utility model: a double-sided paper feeding device with power-free switching parts, which has a scanning unit for scanning paper, and is characterized in that the paper feeding device includes:

a casing unit;

a paper path, located inside the casing unit;

An inversion channel is located on one side of the paper-feeding channel, and has a split opening, an outer section located on one side of the split opening, and an inner section located on the other side of the split opening, and the inner section and the outer section An included angle is an obtuse angle;

A shunt channel connected to the paper-feeding channel and the turning channel has an inlet port connected to the paper-feeding channel and an outlet port opposite to the inlet port and connected to the shunt port, and the outlet port has a an angle between the shunt channel and the inner section is acute with respect to a first side of the inner section, and a second side opposite the first side and opposite to the outer section; and

A switching unit has a switching pawl pivotally connected to the casing unit relative to the inlet port and a switching member located at the outlet port. The introduction port and the paper path have a first position through which the introduction port is connected and a swing end portion for swinging and switching between the second position where the introduction port is closed, and the switching member is a sheet made of a flexible material. shape, and has a fixed end portion fixed on the first side portion of the outlet port, and a fixed end portion opposite to the fixed end portion and relative to the second side portion can be positioned on the second side portion by an abutment Switch from the closed position where the lead-out port is closed to the movable end that is far away from the second side and allows the lead-out port and the shunt port to be unblocked and can contain a back-releasing elastic force.

Wherein, the paper-feeding channel has a first paper-feeding section and a second paper-feeding section docked with the first paper-feeding section, the first paper-feeding section has a paper feeding port and a paper feeding port opposite to the paper feeding port A discharge port, the second paper-feeding section has a receiving port opposite to the discharging port and a lower output port opposite to the receiving port, the scanning unit is located between the discharging port and the receiving port , and the turning channel is located above the second paper-feeding section, and has an upper delivery port, a connection port that is opposite to the upper delivery port and can be connected to the first paper-feeding section, and is located at the upper delivery port Between the connection port and the distribution port closer to the upper delivery port, the outer section extending from the distribution opening toward the upper delivery port, and the inner section extending from the distribution port toward the connection port.

Among them, it also includes a paper feeding roller set located at the paper feeding port of the first paper-feeding section, a first conveying roller set located in the first paper-feeding section, a first conveying roller set located in the second paper-feeding section Two sets of conveying rollers, a third set of conveying rollers located in the turning channel, and a set of paper discharge rollers located at the lower and upper output ports, the set of paper discharge rollers is located outside the diverging channel.

Wherein, the paper discharge roller set has a driving wheel and two driven wheels arranged on both sides of the driving wheel and respectively corresponding to the second paper-feeding section and the turning channel.

Wherein, the switching claw of the switching unit is pivotally connected between the paper discharge roller set and the distribution channel.

Wherein, it also includes an induction unit, the induction unit has a first sensor located at the position of the paper feeding roller set, a second sensor located between the first conveying roller set and the scanning unit, a sensor located on the upper A third sensor at the outgoing port and a fourth sensor at the lower outgoing port.

Wherein, the switching piece of the switching unit is made of plastic material.

The utility model principle and beneficial effect:

Through the above structure, the new double-sided paper feeding device with power-free switching parts is suitable for being installed on an image forming device, and its movable end can be positioned on the second side by abutment and make the outlet port The closed closed position is switched to an open position that is away from the second side after being pulled by the paper and makes the outlet port and the shunt opening unblocked, and there is a back-release elastic force in the open position, and the movable end uses The return elastic force can automatically return from the open position to the closed position.

In this way, the configuration of the switching member of the switching unit can reduce the configuration of electromagnetic actuators, and achieve the purpose of automatically switching the paper conveying direction.

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings.

Description of drawings

Fig. 1 is a combined sectional schematic diagram of an existing automatic paper feeding device;

Fig. 2 is a combined cross-sectional schematic diagram of a preferred embodiment of the double-sided paper feeding device with power-free switching parts of the present invention;

Fig. 3 is a partially enlarged schematic diagram of the above-mentioned preferred embodiment of the utility model-the switching element is arranged between a shunt channel and an inversion channel; and

FIG. 4 is a schematic diagram of a switching action of a swing end of a switching claw swinging from a first position to a second position in the preferred embodiment of the present invention.

Detailed ways

As shown in FIG. 2 , the preferred embodiment of the novel double-sided paper feeding device with power-free switching parts is suitable for being installed on an image forming device 200 (such as a copier), and can provide a first surface 310 The paper 300 to be scanned and a second surface 320 can be automatically transported. The image forming device 200 has a scanning unit 210 . The automatic paper-feeding device comprises a casing unit 10, a first paper-feeding section 20 arranged inside the casing unit 10, a second paper-feeding section 30 docked with the first paper-feeding section 20, a The turning channel 40 above the second paper-feeding section 30 , a shunt channel 50 that can connect the second paper-feeding section 30 and the turning-side channel 40 , and a paper feed roller set corresponding to the first paper-feeding section 20 60. A first conveying roller set 70 set in the first paper-feeding section 20, a second conveying roller set 80 set in the second paper-feeding section 30, a set of conveying rollers set in the turning channel 40 The third conveying roller group 90, a paper discharge roller group 100 arranged between the second paper feeding section 30 and the turning channel 40, a switching unit 110 arranged inside the paper discharge roller group 100 and a The sensing unit 120 inside the casing unit 10 . The first and second paper-feeding sections 20, 30 constitute a paper-feeding channel.

The casing unit 10 has a first end 11, a second end 12 opposite to the first end 11, a bottom 13 adjacent to the image forming device 200, a bottom 13 mounted on the first A paper feed tray 14 at the end 11 , an upper paper output tray 15 arranged below the paper feed tray 14 and a lower paper output tray 16 arranged below the upper paper output tray 15 . The lower paper output tray 16 is vertically spaced from the upper paper output tray 15 and the paper input tray 14 .

The first paper feeding section 20 extends from the first end 11 toward the second end 12 in a circular arc, and has a pair of paper feeding ports 21 corresponding to the paper feeding tray 14 and a paper feeding port 21 corresponding to the paper feeding The port 21 is a discharge port 22 extending in an arc, and the discharge port 22 approaches the bottom 13 of the casing unit 10 .

The second paper feeding section 30 extends toward the first end 11 from the second end 12 close to the bottom 13, and has a receiving port 31 opposite to the discharge port 22 and a connecting port 31 opposite to the feeding port 22. The port 31 is a lower output port 32 arranged oppositely. The scanning unit 210 is located between the output port 22 and the receiving port 31 . The lower output port 32 corresponds to the lower output tray 16 .

The turning channel 40 extends from the first end 11 to the second end 12 and is arranged above the second paper feeding section 30 , and has an upper output port 41 corresponding to the upper output tray 15 , One is opposite to the upper delivery port 41 and can be connected to the connection port 42 of the first paper-feeding section 20, one is between the upper delivery port 41 and the connection port 42 and approaches the upper The split port 43 of the outlet port 41, an outer section 44 extending from the split port 43 toward the upper outlet port 41, and an inner segment 45 extending from the split port 43 toward the connecting port 42, the inner and outer segments 45 , 44 between an angle θ1 is an obtuse angle (see Figure 3).

With reference to FIG. 3 , the branch channel 50 is corresponding to the first end portion 11 and connected obliquely between the second paper-feeding section 30 and the turning channel 40 , and has a 30 connected to the inlet port 51 and an outlet port 52 that is opposite to the inlet port 51 and connected to the reverse channel 40, the outlet port 52 is close to the shunt port 43, and has a corresponding The first side portion 521 of the through port 42 and a second side portion 522 opposite to the first side portion 521 and corresponding to the upper delivery port 41, an included angle between the shunt channel 50 and the inner section 45 θ2 is an acute angle.

The paper feeding roller set 60 is arranged at the junction of the paper feeding tray 14 and the paper feeding port 21 of the first paper feeding section 20 , and has a plurality of rollers that allow a single paper 300 to be scanned to enter the first paper feeding section 20 smoothly. The paper feed roller 61 in.

The first conveying roller set 70 has two first conveying rollers 71 that can rotate relative to each other and can be extended in the first paper transport section 20 .

The second conveying roller set 80 has two second conveying rollers 81 that can rotate relative to each other and can be extended in the second paper transport section 30 .

The third conveying roller set 90 has two third conveying rollers 91 that can rotate relative to each other and can be extended in the turning channel 40 .

The paper discharge roller set 100 is located on the outside of the distribution channel 50, and has a drive wheel 100' and two points are arranged on both sides of the drive wheel 100' and correspond to the second paper section 30 and the turning channel 40 respectively. The driven wheels 100", these driven wheels 100" can be braked by the driving wheel 100' to rotate relative to the driving wheel 100', and are respectively arranged on the lower and upper paper output trays 16, 15 and the lower , and send out ports 32 and 41 at the junction.

The switching unit 110 is arranged inside the paper discharge roller set 100, and has a switching claw 110' pivotally arranged on one side of the inlet port 51 and a switching member 110" arranged on the outlet port 52. The switching claw 110 'pivoted between the paper ejection roller set 100 and the branch channel 50, and has a swing end 111' that can swing in the second paper feeding section 30 and the branch channel 50, and is controlled by an electromagnetic actuator (not shown in the figure), the swing end 111' can be between a first position where the introduction port 51 and the second paper feeding section 30 are connected and a second position where the introduction port 51 is closed. Switch between swings. As shown in Figure 3, the switching member 110 "is made of a flexible plastic sheet, and has a fixed end 111" fixed on the first side portion 521 of the outlet port 52 and A movable end portion 112 ″ opposite to the fixed end portion 111 ″ and corresponding to the second side portion 522 .

The sensing unit 120 has a first sensor 121 disposed on the paper feeding tray 14 close to the paper feeding roller set 60 , a second sensor 121 disposed between the first conveying roller set 70 and the scanning unit 210 The sensor 122 , a third sensor 123 disposed on the upper output port 41 and a fourth sensor 124 disposed on the lower output port 32 .

As shown in FIGS. 2 and 3 , when the user pre-sets the paper 300 to be scanned on both sides, and places the paper 300 on the paper feeding tray 14, prompting the first surface 310 to face down, using the first The sensor 121 senses a front end of the paper 300, and can control the rotation of the paper feeding roller set 60, and bring the paper 300 into the first paper feeding section 20, and use the first conveying roller set 70 to continue toward the scanning unit 210 and the second paper section 30 for delivery. And when the second sensor 122 senses the front end of the paper 300 to be scanned, it can control the scanning unit 210 to activate the scanning action online, and control the swing end 111' of the switching claw 110' to swing to the first position, and The introduction port 51 of the distribution channel 50 is connected to the second paper-feeding section 30 .

Next, when the first surface 310 of the paper 300 is scanned by the scanning unit 210 and transported by the second conveying roller 80, it is guided by the swing end 111' of the switching claw 110' at the first position. , it will turn into the branch channel 50 from the second paper feeding section 30, and by using the front end of the paper 300 to push the switching member 110", the movable end 112" can be positioned by abutting against the second On the side portion 522 and the closed position (as shown by the solid line in FIG. 2 and FIG. 3 ) that makes the outlet port 52 closed, it can be moved away from the second side portion 522 after being pulled by the paper 300 and the outlet port 52 is connected to the second side portion 522 The shunt opening 43 is in an unobstructed open position (as shown by the imaginary lines in Figure 2 and Figure 3), and contains a release elastic force when in the open position, and when the paper 300 is transferred into the turning channel 40, and is subjected to the paper discharge The role of the roller set 100 will be partially brought out from the upper output port 41 toward the upper paper output tray 15 until one end of the paper 300 is completely removed from the output port 52, and the movable end 112" can be opened by using the return elastic force. The position automatically returns to the closed position.

At this time, as shown in FIG. 4 , the first surface 310 is facing upwards, while the second surface 320 is facing downwards, and when the third sensor 123 senses the end of the paper 300, the paper discharge roller set 100 will Reversed, the swing end 111' of the switching claw 110' will swing from the first position to the second position (that is, the switching claw 110' will close the inlet port 51), and the switching piece 110" is already in the closed position. , the paper 300 will smoothly move from the upper delivery port 41 to the connection port 42, and the third transport roller set 90 can be used to smoothly guide the paper 300 into the first paper feeding section 20. When the second surface 320 of the paper 300 is subjected to After the scanning unit 210 scans, it can be transported by the second conveying roller set 80, and the fourth sensor 124 senses and controls the drive of the paper discharge roller set 100, so that the paper 300 can be sent out to the lower paper output tray 16 superior.

Therefore, the present model only needs to set an electromagnetic actuator to control the switching claw 110', and the switching member 110" does not need to be controlled by an electromagnetic actuator, and the pushing of the front end of the paper 300 can be used to make the movable The end portion 112" is shifted from the closed position against the second side portion 522 to the open position where the outlet port 52 and the shunt port 43 are unblocked, and can be released by releasing the elastic force after opening. Returning from the open position to the closed position, the number of electromagnetic actuators used can be reduced, and the cost can also be reduced.

The above is only a preferred embodiment of the present invention, and should not limit the scope of implementation of the present invention with this, that is, all simple equivalent changes and modifications made according to the patent scope of the present application and the new description content are still the same. Belong to within the scope that this new patent covers.

Claims (7)

1. A double-sided paper feeding device with power-free switching parts, having a scanning unit for scanning paper, characterized in that, the paper feeding device includes: a casing unit; a paper path, located inside the casing unit; An inversion channel is located on one side of the paper-feeding channel, and has a split opening, an outer section located on one side of the split opening, and an inner section located on the other side of the split opening, and the inner section and the outer section An included angle is an obtuse angle; A shunt channel connected to the paper-feeding channel and the turning channel has an inlet port connected to the paper-feeding channel and an outlet port opposite to the inlet port and connected to the shunt port, and the outlet port has a an angle between the shunt channel and the inner section is acute with respect to a first side of the inner section, and a second side opposite the first side and opposite to the outer section; and A switching unit has a switching pawl pivotally connected to the casing unit relative to the inlet port and a switching member located at the outlet port. The introduction port and the paper path have a first position through which the introduction port is connected and a swing end portion for swinging and switching between the second position where the introduction port is closed, and the switching member is a sheet made of a flexible material. shape, and has a fixed end portion fixed on the first side portion of the outlet port, and a fixed end portion opposite to the fixed end portion and relative to the second side portion can be positioned on the second side portion by an abutment Switch from the closed position where the lead-out port is closed to the movable end that is far away from the second side and allows the lead-out port and the shunt port to be unblocked and can contain a back-releasing elastic force. 2. The double-sided paper feeding device with power-free switching parts according to claim 1, wherein the paper feeding channel has a first paper feeding section and a second paper feeding section docked with the first paper feeding section A paper section, the first paper section has a paper feed port and a discharge port opposite to the paper feed port, the second paper feed section has a guide port opposite to the discharge port and a feed port opposite to the paper feed port The lower output port opposite to the leading port, the scanning unit is located between the output port and the receiving port, and the turning channel is located above the second paper feeding section, and has an upper output port, an upper output port, and an upper output port. The ports are opposite and can be connected to the first paper-feeding section through the connection port, located between the upper delivery port and the connection port and closer to the upper delivery port, from the diversion port to the upper delivery port An extended outer section and an inner section extended from the split port toward the connection port. 3. The double-sided paper feeding device with a power-free switching element according to claim 2, further comprising a paper feed roller group located at the paper feeding port of the first paper feeding section, a paper feeding roller set located at the first paper feeding section A first set of conveying rollers in the paper-feeding section, a second set of conveying rollers in the second paper-feeding section, a third set of conveying rollers in the turning channel, and a set of lower and upper output ports The paper discharge roller set at the position, the paper discharge roller set is located on the outside of the shunt channel. 4. The double-sided paper feeding device with a power-free switching part according to claim 3, wherein the paper discharge roller set has a driving wheel and two points are arranged on both sides of the driving wheel and are respectively connected to the second driving wheel. The driven wheel corresponding to the paper segment and the turning channel. 5 . The double-sided paper feeding device with a power-free switching element according to claim 3 , wherein the switching claw of the switching unit is pivotally connected between the paper discharge roller set and the distribution channel. 6 . 6. The double-sided paper feeding device with a power-free switching element according to claim 3, further comprising a sensing unit, the sensing unit has a first sensor located at the position of the paper feeding roller group, a A second sensor located between the first transfer roller set and the scanning unit, a third sensor located at the upper output port, and a fourth sensor located at the lower output port. 7. The double-sided paper feeding device with a power-free switching element according to claim 1, wherein the switching element of the switching unit is made of plastic material.

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