CN1315254A - Paper feeding system with paper separation mechanism and paper stop mechanism - Google Patents

Abstract

A paper feeding system with paper separating mechanism and paper stopping mechanism is composed of casing, paper carrying lifting plate for carrying paper, the first elastic unit in contact with said lifting plate for lifting it up, paper taking roller over said lifting plate, pressing unit for pressing said lifting plate down to separate the paper from said paper taking roller, paper separating mechanism for contacting the lower side of paper taking roller, and driver for driving said paper taking roller and pressing unit.

Description

Paper feeding system with paper separation mechanism and paper stop mechanism

The invention relates to a paper feeding system, in particular to a paper feeding system with a paper separation mechanism and a paper blocking mechanism.

In a general office, it is often necessary to use a so-called business machine to process documents. General office machines include photocopiers, fax machines, and printers. In order to facilitate the continuous processing of documents, these business machines should all include a paper feeding system to supply the required paper. Because any business machine can only process single-sided documents at a time, it is necessary for the paper feeding system to accurately send out one piece of paper each time. If the paper feeding system sends out multiple sheets at a time, it will cause the paper to jam easily, stop the whole printing process and cause paper waste. Therefore, how to design a paper-feeding system that can accurately send out a single sheet of paper is very important.

Please refer to FIG. 1 , which is a schematic diagram of an existing paper feeding system. The existing paper feeding system 10 includes a paper storage box 12 , a paper lifting plate 14 , the paper lifting plate 14 is rotatably fixed to the paper storage box 12 , a lifting lever 16 , and a paper picking roller 18 . When the lifting lever 16 rotates counterclockwise, it will lift the front end of the paper lifting plate 14, so that the paper pick-up roller 18 contacts the paper placed on the paper lifting plate 14, and sends the paper out of the paper feeding system 10 to achieve the goal of paper feeding. the goal of.

Please refer to FIG. 2 , which is a schematic diagram of multiple paper feeding in the existing paper feeding system. Since the existing paper feeding system only uses the paper pick-up roller to pick up the paper, it is easy to send several sheets of paper out of the paper feeding system at one time, resulting in multiple paper feeding or excessive paper jams in the paper feeding channel. These situations will not only cause waste of paper, but also reduce the service life of the machine.

The object of the present invention is to provide a paper feeding system with a paper separation mechanism and a paper blocking mechanism, so as to solve the above-mentioned shortcomings.

The object of the present invention is achieved by providing a paper feeding system, which includes: a housing; a paper lifting plate, arranged in the housing to carry paper; a first elastic device, located in the Inside the housing and in contact with the paper lifting plate, it is used to lift the paper lifting plate upwards; a paper take-up roller is located in the housing and above the paper lifting plate, when the first elastic device will When the paper lifting plate is lifted up, the paper carried on the paper lifting plate will touch the paper picking roller, and the paper picking roller can send the paper on the paper lifting plate out of the paper feeding system; a pressing device , set in the housing, used to press down the paper lifting plate so that the paper carried on the paper lifting plate can be separated from the paper pickup roller; a paper separating mechanism is set in the housing and elastically Touch the lower side of the paper pickup roller. When the paper pickup roller moves the two papers out of the front end of the paper lifting plate at the same time, the paper pickup roller will continue to drive the upper paper forward, and the paper separation mechanism will make The paper located below stops advancing, and a driving device is used to drive the paper-taking roller and the pressing device; wherein when the driving device drives the pressing device, the paper-carrying lifting plate is pressed down to make the paper-carrying lifting plate When the loaded paper is separated from the paper pickup roller, the paper lifting plate will brake the paper separating mechanism to separate from the paper pickup roller. When the driving device reversely drives the pressing device, the first elastic device The paper loading lifting plate will be lifted up and the paper carried on the paper loading lifting plate will touch the paper picking roller, and the paper separation mechanism will touch the paper picking roller due to the upward movement of the paper loading lifting plate.

The present invention also provides a paper feeding system, which includes: a housing; a paper lifting plate set in the housing for carrying paper; a first elastic device located in the housing and connected with the paper The lifting plates are in contact with each other, and are used to lift the paper lifting plate upwards; a paper fetching roller is arranged in the housing and above the paper lifting plate, when the first elastic device lifts the paper lifting plate upwards When it is lifted, the paper carried on the paper lifting plate will touch the paper picking roller, and the paper picking roller can send the paper on the paper lifting plate out of the paper feeding system; a pressing device is arranged in the housing, Used to press down the paper lifting plate so that the paper carried on the paper lifting plate can be separated from the paper picking roller; a paper stop mechanism is arranged in the housing and elastically contacts the paper Lifting plate; and a driving device, used to drive the paper-taking roller and the pressing device; wherein when the driving device drives the pressing device, the paper-carrying lifting plate is pressed down so that the paper carried on the paper-carrying lifting plate When separated from the paper pickup roller, the paper blocking mechanism will return the paper at the front end of the paper lifting plate to the paper lifting plate, and when the driving device reversely drives the pressing device, the first elastic device will The paper lifting plate is lifted up so that the paper carried on the paper lifting plate touches the pick-up roller, and the paper lifting plate will push the paper stop mechanism away at the same time, so that the paper in the paper lifting plate It is possible to move forward the paper lifting plate.

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the schematic diagram of existing paper feeding system;

Figure 2 is a schematic diagram of multiple paper feeding in the existing paper feeding system;

Fig. 3 is a schematic diagram of a paper feeding system with a paper separation mechanism and a paper blocking mechanism according to the present invention;

Fig. 4 is the reverse schematic view of the paper-carrying lifting board of the paper-feeding system of the present invention;

5a to 5d are structural schematic diagrams of the paper separating mechanism and the paper stop mechanism of the paper feeding system of the present invention;

Figure 6a and Figure 6b are schematic diagrams of the action of the paper separating mechanism of the paper feeding system of the present invention;

FIG. 7a and FIG. 7b are schematic diagrams of the action of the paper blocking mechanism of the paper feeding system of the present invention.

Please refer to FIG. 3 , which is a schematic diagram of a paper feeding system with a paper separation mechanism and a paper blocking mechanism according to the present invention. The paper feeding system 30 of the present invention includes a housing 32, a paper lifting plate 34, which is arranged in the housing 32 to carry paper, and a paper picking roller 36, which is rotatably arranged in the housing 32 and positioned on the loading board. Above the front end of the paper lifting plate 34, an idler 35 (not shown) is used to cooperate with the rotation of the paper picking roller 36, and a first elastic device 46 (not shown) is located in the housing 32 and is connected with the paper lifting. The front ends of the plate 34 are in contact with each other for lifting the front end of the paper lifting plate 34, a pressing device 38, a paper separating mechanism 40, a paper blocking mechanism 42, and a driving device 60 (not shown). Beside the pick-up roller 36, a paper guide plate 31 is arranged, and the passage between the pick-up roller 36 and the paper guide plate 31 forms a paper feeding channel, and the paper guide plate 31 is arranged along the periphery of the pick-up roller 36 so that The guide paper is sent out of the paper feeding system 30 through the paper feeding channel. The paper lifting plate 34 includes a front end and a rear end, and the rear end of the paper lifting plate 34 is rotatably fixed in the casing 32 . When the first elastic device 46 lifted the front end of the paper lifting plate 34 upwards, the paper carried on the paper lifting plate 34 would touch the paper picking roller 36, and the paper picking roller 36 would rotate the paper lifting plate 34 The paper on the top is sent out of the paper feeding system 30. The pressing device 38 is used to press down the paper lifting plate 34 so that the paper carried on the paper lifting plate 34 can be separated from the paper picking roller 36 .

The pressing device 38 can be designed as a cam (cam) 37 rotatably arranged on one side of the paper lifting plate 34 .

Please refer to Figure 3. When the driving device 60 drives the cam 37 to rotate so that its flange 41 touches the paper lifting plate 34, the flange 41 of the cam 37 will press the front end of the paper lifting plate 34 downward, and when the driving device 60 drives the cam 37 to rotate to make When its flange 41 was away from the paper-carrying lifting plate 34, the round edge 39 of the cam 37 would touch the paper-carrying lifting plate 34 due to the first elastic device 46 lifting the front end of the paper-carrying lifting plate 34 upwards, so that it is carried on the carrier. The paper on the paper lifting plate 34 is in contact with the paper picking roller 36 . The driving device 60 further includes a motor 61 and a gear transmission module (gear transmission) 62. The motor 61 uses the gear transmission module 62 to drive the cam 37 and the paper pickup roller 36 of the pressing device 38. In this preferred embodiment, the first elastic device 46 is a spring or other elastic mechanism, which is arranged under the front end of the paper lifting plate 34 and is used to lift the front end of the paper lifting plate 34 upward.

Please refer to Figure 4. It is a reverse schematic view of the paper loading and lifting plate of the paper feeding system of the present invention. As shown in FIG. 4 , two round frames 47 are provided on the back side of the paper lifting plate 34 near the front end for respectively placing the first elastic devices 46 therein. In addition, the front end of the paper lifting plate 34 is provided with two flanges 43, 45, which are respectively located relative to the paper separation mechanism 40 and the paper stop mechanism 42. When the paper lifting plate 34 is lifted up or pressed down, the The two flanges 43 , 45 at the front end of the paper lifting plate 34 respectively actuate the paper separation mechanism 40 and the paper blocking mechanism 42 .

5a to 5d are structural schematic diagrams of the paper separating mechanism and the paper blocking mechanism of the paper feeding system of the present invention. As shown, FIG. 5 a is a top perspective view of the paper separation mechanism 40 . FIG. 5 b is a bottom perspective view of the paper separating mechanism 40 . FIG. 5 c is a front perspective view of the paper blocking mechanism 42 . FIG. 5 d is a rear perspective view of the paper blocking mechanism 42 . The paper separation mechanism 40 is provided with a paper separation friction plate 50, a leading edge 51, which is used to cooperate with the flange 43 at the front end of the paper lifting plate 34, and a second elastic device 52 is located at the bottom of the paper separation friction plate 50 for to elastically lift the paper separating mechanism 40 upwards. Therefore, when the front end of the paper lifting plate 34 is pressed down, the flange 43 at its front end will actuate the front edge 51 of the paper separating mechanism 40 so that the paper separating mechanism 40 is brought downwards, and thus compresses the second elastic means 52 . When the front end of the paper lifting plate 34 is lifted up, the second elastic device 52 is released simultaneously so that the paper separation friction plate 50 is elastically pushed towards the paper pickup roller 36 . Here, the second elastic device 52 can be a spring or other elastic mechanisms.

The paper blocking mechanism 42 includes a blocking plate 54 which is rotatably arranged in the housing 32, and a third elastic device 56 which is arranged in the housing 32 and is used to elastically push the blocking plate 54 toward the paper lifting plate. 34 front end. When the paper lifting plate 34 is moved downward, the baffle plate 54 will be elastically pushed toward the front end of the paper lifting plate 34 by the third elastic device 56, so that the paper exceeding the front end of the paper lifting plate 34 will return to the paper lifting plate 34 In the process, when the paper lifting plate 34 is lifted upwards, the flange 45 at the front end of the paper lifting plate 34 will push the baffle 54 away, so that the paper in the paper lifting plate 34 can be moved forward by the paper pickup roller 36 The paper lifting plate 34 will not be blocked by the baffle 54 of the paper blocking mechanism 42 , causing damage to the paper or hindering the paper from moving out of the paper feeding system 30 . In this embodiment, the third elastic device 56 is a torsion spring, but it can also be replaced by a tension spring or other elastic mechanisms.

Please refer to FIG. 6a and FIG. 6b. FIG. 6a and FIG. 6b are schematic diagrams of the action of the paper separating mechanism of the paper feeding system of the present invention. FIG. 6 a is a schematic diagram of the pressing device 38 pressing down the paper lifting plate 34 and simultaneously pressing down the paper separating mechanism 40 . FIG. 6 b is a schematic diagram of the first elastic device 46 lifting up the paper lifting plate 34 while simultaneously lifting up the paper separating mechanism 40 . When the paper feeding system 30 starts to feed the paper, the driving device 60 starts to run in the forward direction, and the cam 37 of the pressing device 38 starts to rotate, so that the round edge 39 of the cam 37 rotates to the position in contact with the paper lifting plate 34 , the first elastic device 46 will lift the front end of the paper lifting plate 34 upwards, and the flange 43 at the front end of the paper lifting plate 34 will no longer press the front edge 51 of the paper separating mechanism 40, so that the paper separating mechanism 40 is moved by the second Two elastic devices 52 are raised. If the paper pick-up roller 36 moves the two papers out of the front end of the paper lifting plate 34 at the same time, the paper pick-up roller 36 drives the idler 35 and the paper at the top will continue to be driven forward, and the paper separation mechanism 40 will make the paper at the bottom Paper stops advancing. When the paper to be conveyed has been sent out of the paper feeding system 30, the driving device 60 starts to run in reverse, so that the cam 37 flange 41 of the pressing device 38 is rotated to a position in contact with the paper lifting plate 34, and the flange 41 of the cam 37 The front end of the paper lifting plate 34 will be pressed down, and the flange 43 at the front end of the paper lifting plate 34 will simultaneously press down the paper separation mechanism 40 to separate from the paper pickup roller 36 . Because the friction force between the paper pickup roller 36 and the paper and the paper separation friction plate 50 and the paper is greater than the friction between the papers, the paper pickup roller 36 will only take away the contacted paper smoothly, leaving the excess paper behind. On the paper separation friction sheet 50.

Please refer to FIG. 7a and FIG. 7b. FIG. 7a and FIG. 7b are schematic diagrams of the action of the paper blocking mechanism of the paper feeding system of the present invention. FIG. 7 a is a schematic diagram of the pressing device 38 pressing down the paper lifting plate 34 and simultaneously pressing down the paper blocking mechanism 42 . FIG. 7 b is a schematic diagram of the first elastic device 46 lifting the paper lifting plate 34 upwards while simultaneously lifting the paper blocking mechanism 42 . Similarly, when the paper feeding system 30 starts to feed paper, the driving device 60 starts to run forward, and the cam 37 of the pressing device 38 starts to rotate, so that the round edge 39 of the cam 37 rotates to contact with the paper lifting plate 34 position, the first elastic device will lift the front end of the paper lifting plate 34 upwards, and the flange 45 at the front end of the paper lifting plate 34 will simultaneously push the paper blocking mechanism 42 away, so that the paper in the paper lifting plate 34 It can be taken up by the paper-fetching roller 36 and moved out of the paper-carrying lifting plate 34 forward. When the conveyed paper has been sent out of the paper feeding system 30, the driving device 60 starts to reversely drive the pressing device 38, so that the flange 41 of the cam 37 of the pressing device 38 will turn to a position in contact with the paper lifting plate 34, so that the cam The flange 41 of 37 will press down the front end of the paper-carrying lifting plate 34 and simultaneously press down the flange 45, and the baffle 54 of the baffle mechanism 42 will be pushed towards the front end of the paper-carrying lifting plate 34 by the third elastic device 56, To make the paper beyond the front end of the paper lifting plate 34 retreat and align with the edge of the paper lifting plate 34 . Therefore, the paper previously left by the paper separating mechanism 42 will be pushed back onto the paper lifting plate 34, and the breakage or displacement of the paper can be effectively avoided.

Compared with the existing paper feeding system, the paper feeding system of the present invention has a paper separating mechanism 40 and a paper stop mechanism 42, and uses the two flanges 43 and 45 at the front end of the paper lifting plate 34 to simultaneously control the paper separating mechanism 40 and the paper stop mechanism 42 moves. The paper separation mechanism 40 can ensure that the paper feeding system sends out only one paper at a time, so as to avoid paper waste caused by multiple paper feeding and damage to the machine caused by paper jams. And the paper blocking mechanism 42 will push back the paper left by the paper separation mechanism 40 to the paper carrying plate 34, so the paper will not be damaged or broken due to the decline of the paper carrying plate 34, and it will be separated from the paper carrying plate 34. The edges of the lifting plate 34 are aligned. Therefore, the paper feeding system of the present invention can smoothly send out a single undamaged paper every time for file processing.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention should fall within the scope of the patent of the present invention.

Claims (17)

1. A paper feeding system comprising: a shell; a paper-carrying lifting plate, which is arranged in the housing for carrying paper; a first elastic device, located in the housing and in contact with the paper lifting plate, used to lift the paper lifting plate upward; A paper taking roller is arranged in the housing and above the paper lifting plate. When the first elastic device lifts the paper lifting plate upwards, the paper carried on the paper lifting plate will touch the paper lifting plate. A paper roller, the paper fetching roller can send the paper on the paper lifting plate out of the paper feeding system; a pressing device, arranged in the housing, used to press down the paper lifting plate so that the paper carried on the paper lifting plate can be separated from the paper pickup roller; A paper separation mechanism is located in the housing and elastically touches the lower side of the paper pickup roller. the paper continues to advance, the separation mechanism stops the paper below, and a driving device, used to drive the paper pickup roller and the pressing device; Wherein, when the driving device drives the pressing device to press down the paper lifting plate so that the paper carried on the paper lifting plate is separated from the paper pickup roller, the paper lifting plate will brake the paper separating mechanism Make it separate from the paper picking roller, when the driving device reversely drives the pressing device, the first elastic device will lift up the paper lifting plate and make the paper carried on the paper lifting plate touch the Pick-up roller, the paper separation mechanism will touch the pick-up roller due to the upward movement of the paper lifting plate. 2. The paper feeding system according to claim 1, wherein the pressing device is a cam, which is rotatably arranged on one side of the paper lifting plate, and the cam includes a round edge and a convex edge, when the driving device When the cam is driven to rotate so that its convex edge touches the paper lifting plate, the cam’s convex edge will press the front end of the paper lifting plate downward, and when the driving device drives the cam to rotate its convex edge away from the paper lifting plate When lifting the plate, the round edge of the cam will touch the paper lifting plate due to the first elastic device lifting the front end of the paper lifting plate upwards. 3. The paper feeding system according to claim 1, wherein the paper lifting plate comprises a front end and a rear end, and the rear end of the paper lifting plate is rotatably fixed in the casing. 4. The paper feeding system as claimed in claim 2, wherein the driving device comprises a motor and a gear transmission mold assembly, and the motor uses the gear transmission mold assembly to drive the cam and the paper pickup roller. 5. The paper feeding system as claimed in claim 1, wherein the first elastic device is a spring and is arranged under the paper lifting plate for elastically lifting the front end of the paper lifting plate upward. 6. The paper feeding system according to claim 1, wherein the paper separation mechanism includes a paper separation friction plate, and a second elastic device is arranged under the paper separation friction plate, and is used to elastically push the paper separation friction plate toward The paper pick-up roller, when the front end of the paper-loaded lifting plate moves downward, the front end of the paper-loaded lift plate will downwardly actuate the paper separation friction plate to separate from the paper-fetching roller, when the paper-loaded lift plate When the front end of the front end moves upwards, the second elastic device will elastically push the paper separation friction plate towards the paper pickup roller. 7. The paper feeding system according to claim 1, further comprising a paper blocking mechanism, which is rotatably arranged in the casing and elastically contacts the front end of the paper lifting plate, wherein when the paper lifting plate When the front end of the paper lifting plate moves downward, the paper blocking mechanism will return the paper at the front end of the paper lifting plate to the paper lifting plate; when the front end of the paper lifting plate moves upward, the front end of the paper lifting plate will Pushing away the paper blocking mechanism allows the paper in the paper lifting plate to move forward out of the paper lifting plate. 8. The paper feeding system as claimed in claim 7, wherein the paper blocking mechanism comprises a blocking plate rotatably arranged in the housing, and a third elastic device is arranged in the casing for the blocking plate elastically pushes toward the front end of the paper-carrying lifting plate, wherein when the paper-carrying lifting plate is moved downward, the baffle plate will be elastically pushed toward the front end of the paper-carrying lifting plate so as to be positioned at the front end of the paper-carrying lifting plate The paper is returned to the paper lifting plate, when the paper lifting plate is lifted upwards, the front end of the paper lifting plate will push the baffle away so that the paper in the paper lifting plate can move forward out of the Carrying paper and lifting board. 9. A paper feeding system comprising: a shell; a paper-carrying lifting plate, which is arranged in the housing for carrying paper; a first elastic device, located in the housing and in contact with the paper lifting plate, used to lift the paper lifting plate upward; A paper taking roller is arranged in the housing and above the paper lifting plate. When the first elastic device lifts the paper lifting plate upwards, the paper carried on the paper lifting plate will touch the paper lifting plate. A paper roller, the paper fetching roller can send the paper on the paper lifting plate out of the paper feeding system; a pressing device, arranged in the housing, used to press down the paper lifting plate so that the paper carried on the paper lifting plate can be separated from the paper pickup roller; a paper blocking mechanism, located in the housing and elastically contacting the paper lifting plate; and a driving device, used to drive the paper pickup roller and the pressing device; Wherein when the driving device drives the pressing device to press down the paper lifting plate to separate the paper carried on the paper lifting plate from the paper pickup roller, the paper blocking mechanism will make the paper lifting plate located on the paper lifting plate The paper at the front is returned to the paper lifting plate, and when the driving device reversely drives the pressing device, the first elastic device will lift the paper lifting plate upwards so that the paper carried on the paper lifting plate When the paper-fetching roller is touched, the paper-carrying lifting plate will simultaneously push away the paper blocking mechanism, so that the paper in the paper-carrying lifting plate can be moved forward out of the paper-carrying lifting plate. 10. The paper feeding system according to claim 9, further comprising a paper separating mechanism, which is arranged in the housing and elastically touches the lower side of the paper picking roller, when the paper picking roller moves two papers out of the paper loading When the front end of the plate is moved, the pick-up roller will continue to drive the upper paper forward, and the paper separation mechanism will stop the lower paper from advancing. 11. The paper feeding system according to claim 9, wherein the paper lifting plate comprises a front end and a rear end, and the rear end of the paper lifting plate is rotatably fixed in the housing. 12. The paper feeding system according to claim 10, wherein when the driving device drives the pressing device to press down the front end of the paper lifting plate so that the paper carried on the paper lifting plate is separated from the paper pickup roller , the front end of the paper-carrying lifting plate will brake the paper-separating mechanism downwards to separate it from the paper-taking roller, and when the driving device reversely drives the pressing device, the first elastic device will lift the paper-carrying plate The front end of the paper lifting plate is lifted up and the paper carried on the paper lifting plate touches the paper picking roller, and the paper separation mechanism will elastically touch the paper picking roller upward due to the upward movement of the front end of the paper loading lifting plate. 13. The paper feeding system as claimed in claim 12, wherein the paper separation mechanism includes a paper separation friction plate, and a second elastic device is arranged under the paper separation friction plate for elastically pushing the paper separation friction plate Towards the pickup roller, when the front end of the paper lifting plate moves downward, the front end of the paper lifting plate will actuate the paper separation friction piece downward to separate it from the pickup roller. When the front end of the board moves upwards, the second elastic device will elastically push the paper separation friction sheet towards the paper pickup roller. 14. The paper feeding system as claimed in claim 9, wherein the pressing device is a cam, which is rotatably arranged on one side of the paper lifting plate, and the cam includes a round edge and a convex edge, when the driving device When the cam is driven to rotate so that its convex edge touches the paper lifting plate, the cam’s convex edge will press the front end of the paper lifting plate downward, and when the driving device drives the cam to rotate its convex edge away from the paper lifting plate When lifting the plate, the round edge of the cam will touch the paper lifting plate due to the first elastic device lifting the front end of the paper lifting plate upwards. 15. The paper feeding system as claimed in claim 14, wherein the driving device comprises a motor and a gear transmission mold assembly, which are arranged between the motor, the cam and the paper pickup roller, and are used to enable the motor to drive the cam and the pickup roller. 16. The paper feeding system as claimed in claim 9 , wherein the first elastic device is a spring and is arranged under the paper lifting plate for elastically lifting the front end of the paper lifting plate upward. 17. The paper feeding system as claimed in claim 9, wherein the paper blocking mechanism comprises a baffle plate rotatably arranged in the housing, and a third elastic device provided in the housing for the baffle plate elastically pushes toward the front end of the paper-carrying lifting plate, wherein when the paper-carrying lifting plate is moved downward, the baffle plate will be elastically pushed toward the front end of the paper-carrying lifting plate so as to be positioned at the front end of the paper-carrying lifting plate The paper is returned to the paper lifting plate, when the paper lifting plate is lifted upwards, the front end of the paper lifting plate will push the baffle away so that the paper in the paper lifting plate can move forward out of the Carry the paper and lift the board.

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