CN1261307C

CN1261307C - Automatic paper feeder with real-time paper jamming detecting function

Info

Publication number: CN1261307C
Application number: CN 03115976
Authority: CN
Inventors: 陈琰成; 陈继耀
Original assignee: Hongguang Precision Industry Suzhou Co Ltd
Current assignee: Hongguang Precision Industry Suzhou Co Ltd
Priority date: 2003-03-24
Filing date: 2003-03-24
Publication date: 2006-06-28
Anticipated expiration: 2023-03-24
Also published as: CN1532068A

Abstract

The present invention relates to an automatic paper feeding machine with a paper jam monitoring function, which comprises a casing, a motor, a driving roller, a driven roller, a rotating speed monitor and a control circuit, wherein the motor is arranged on the casing, the driving roller is driven to rotate by the motor, and the driven roller is driven to rotate by the driving roller. The mutual action of the driven roller and the driving roller conveys a piece of paper to pass. The rotating speed monitor is used for monitoring the rotating speed of the driven roller and outputting a signal of the rotating speed. The control circuit receives the signal of the rotating speed and judges whether the paper is jammed according to the signal of the rotating speed.

Description

The automatic carriage device of tool detecting real-time paperboard function

Technical field

The invention relates to a kind of automatic carriage device, especially about a kind of automatic carriage device of tool detecting real-time paperboard function.

Background technology

In recent years, scanning means has become one of product that generally uses of office and individual.See through scanning means, can be with the file digitlization, also can cooperate printer for example and the function that realizes xeroxing.

Along with the increase of the number of files that will scan, traditional plat form type scanning apparatus does not re-use.Therefore, using paper feeding scanner or collocation that the falt bed scanner of automatic carriage device is arranged is the product that is developing at present.

When the automatic carriage device carried out file feed, the phenomenon of paperboard can take place once in a while.The extruding accumulation takes place according to paper and touches certain mechanism or sensing component in traditional technology in order to detecting automatic carriage device generation paper jam phenomenon mostly in transmission, send signal stops paper feed by the automatic carriage device action again.

Rely on aforesaid way, when the automatic carriage device stopped paper feed, paper had pressed together or is damaged, is a major injury for original copy is preserved.

Perhaps, the time that also can utilize the detecting paper to put in place is carried out the detecting of paperboard.Traditional way is that the paper sensing device is set in the paper feeding channel of automatic carriage device, whether passes through the position of paper sensing device in the regular hour in order to detecting paper behind the beginning paper feed.If paper does not pass through, then judge paperboard in the regular hour.

By the way, the generation paper jam phenomenon be intactly judged, one period considerable time must be reserved.For example, can be set in and begin to feed behind the paper in five seconds paper and just judge paperboard takes place as yet by the paper sensing device.Owing to must consider foozle and factor of safety in the design, so judgement time can't shorten effectively.

Therefore, how to provide a kind of energy detecting real-time whether the automatic carriage device of paper jam phenomenon takes place, real is the problem that current institute desire solves.

Summary of the invention

Therefore, an object of the present invention is to a kind of automatic carriage device of energy detecting real-time paperboard is provided.

In order to reach above-mentioned purpose, the invention provides a kind of automatic carriage device of tool detecting real-time paperboard function, it comprises: a housing; One motor is installed on this housing; One active roller is driven by this motor and rotates; One return idler is subjected to the driving of this active roller and rotates, and this return idler and this active roller acting in conjunction are to transmit a paper by therebetween; One rotating speed detector is in order to rotating speed and the output speed signal of detecting this return idler; And a control circuit, receive this rotary speed signal, and judge that according to this rotary speed signal whether paper blocks.

Rely on the rotating speed of detecting return idler whether ANOMALOUS VARIATIONS takes place, can real-time judge go out the phenomenon whether paperboard takes place.

Description of drawings

Fig. 1 shows the automatic carriage device of the tool detecting real-time paperboard function of the embodiment of the invention;

Fig. 2 shows the connection relationship figure of rotating speed detector, control circuit and the motor of the embodiment of the invention;

Fig. 3 shows first state of first allocation plan of rotating speed detector and return idler;

Fig. 4 shows second state of first allocation plan of the configuration of rotating speed detector and return idler;

Fig. 5 shows second allocation plan of rotating speed detector and return idler;

Fig. 6 shows the 3rd allocation plan of rotating speed detector and return idler;

Fig. 7 shows the 4th allocation plan of rotating speed detector and return idler;

Fig. 8 shows the 5th allocation plan of rotating speed detector and return idler;

Fig. 9 shows the allocation plan of tachometer and return idler.

The specific embodiment

Fig. 1 is the automatic carriage device of the tool detecting real-time paperboard function of the embodiment of the invention.Referring to Fig. 1, the automatic carriage device 1 of the embodiment of the invention is to be seated on the falt bed scanner 34, and there is ray machine 36 falt bed scanner 34 inside, in order to scanning document.In fact, the automatic carriage device 1 fixing ray machine of can arranging in pairs or groups is to form a paper feeding scanner.

Automatic carriage device 1 comprises that a housing 10, a motor 12 are installed on the housing 10, rotating

speed detector

26,28,30 and a control circuit 32.First active roller 14 is subjected to the driving of motor 12 and rotates, and drives 16 rotations of first return idler with this.Second active roller 18 is subjected to the driving of motor 12 and rotates, and drives 20 rotations of second return idler with this.In like manner, the 3rd active roller 22 is subjected to the driving of motor 12 and rotates, and drives 24 rotations of the 3rd return idler with this.The first rotating speed detector 26 is in order to detect the rotating speed of first return idler 16, if the rotating speed of first return idler 16 produces unusual variation, i.e. decidable paperboard in the paper feed process.In like manner, the second rotating speed detector 28 is in order to detecting the rotating speed of second return idler 20, and the 3rd rotating speed detector 30 is in order to detect the rotating speed of the 3rd return idler 24.

Utilize three groups of rotating speed detectors to detect the rotating speed of return idler though it should be noted that present embodiment, in practical application, also can adopt more or less rotating speed detector to detect the rotating speed of return idler.And in the following embodiments, employed various rotating speed detectors can exchange collocation and use.

Because paper P is driven jointly by active roller and return idler, active roller is subjected to the driving of motor forever and rotates, so its rotating speed does not have unusual variation.When paper jam phenomenon took place, the expression paper can't be driven in certain part.Therefore, unusual variation can take place in the rotating speed of return idler.Rely on above-mentioned principle, can utilize the rotation speed change of detecting return idler to judge whether to take place the phenomenon of paperboard.

It should be noted that above described is the ANOMALOUS VARIATIONS of the rotating speed of return idler, but not change in rotational speed.In design, active roller and return idler may have rotation speed change in some stage, for example when the low memory of scanner, just must temporarily stop the running of motor, after the wait internal memory is available, begin to carry out paper feed scanning again.Therefore, single with regard to rotation speed change and can't judge paper jam phenomenon has taken place.Yet when carrying out scanning, the rotating speed of motor is known, thereby makes the rotating speed of active roller become known.Therefore,, can differentiate out by control circuit easily, whether with this generation of judging paper jam phenomenon if during the rotating speed generation ANOMALOUS VARIATIONS of return idler in the paper feed process.

Fig. 2 shows the connection relationship figure of rotating speed detector, control circuit and the motor of the embodiment of the invention.As shown in Figure 2,

rotating speed detector

26,28 and 30 is to be connected with control circuit 32, and control circuit 32 is connected with motor 12, controls the running of motor 12 with this.The rotary speed signal that rotating

speed detector

26,28 and 30 will be detected return idler rotating speed gained passes in the control circuit 32, judges for control circuit 32 whether the rotating speed of return idler ANOMALOUS VARIATIONS takes place, and judges with this whether paper jam phenomenon takes place.

Fig. 3 shows first state of first allocation plan of rotating speed detector and return idler, and Fig. 4 shows second state of first allocation plan of the configuration of rotating speed detector and return idler.See also Fig. 3 and 4, the second rotating speed detectors 28 and comprise a transmitter 282 and a receiver 284.One incident signal S1 is to this return idler 20 in transmitter 282 emissions, and receiver 284 is received from this return idler 20 and a next reflection signal S2.Second return idler 20 has a periphery 206, and periphery 206 includes two sections 202 and 204.

Section

202 and 204 has the different reflectivity with respect to incident signal S1, and therefore reflecting signal S2 can change along with the rotation of this return idler 20.For example,

section

202 and 204 can be coated the coating of different colours.So under the state of Fig. 3 and Fig. 4, receiver 284 received signals are different.Present operable incident signal S1 can be infra-red signal or other signal.

Fig. 5 shows second allocation plan of rotating speed detector and return idler.As shown in Figure 5, the second rotating speed detector 28 comprises: an extension 286, be fixed to second return idler 20 and with its co-rotation; One transmitter 282 is in order to launch an incident signal S1 to this extension 286; And a receiver 284, in order to be received from a reflection signal S2 of this extension 286, this reflection signal S2 changes along with the rotation of this extension 286.In this configuration, extension 286 also can have several sections of the return idler 20 that is similar to Fig. 3, and these sections have different reflectivity for incident signal S1.

Fig. 6 shows the 3rd allocation plan of rotating speed detector and return idler.Referring to Fig. 6, the first rotating speed detector 26 comprises: an extension 266, be fixed to first return idler 16 and with its co-rotation; One transmitter 262 is in order to launch an incident signal S1 to this extension 266; And a receiver 264, penetrating signal S3 in order to receive by one of this extension 266, this penetrates signal S3 and changes along with the rotation of this extension 266.Can form a through hole 268 on the extension 266, make incident signal S1 be received device 264 and receive by through hole 268.

In like manner, also can adopt on return idler, to form through hole, cooperate the transmitter of Fig. 6 and the rotation speed change that receiver is detected return idler.In addition, if extension 266 is also not necessarily cylindrical, and can be any can make penetrate signal with its rotation mutagenic any body.

For example, shown in Fig. 7 and 8, extension 266 is barrier sheets, it and first return idler, 16 co-rotation.On actual design, so long as can selectivity stop that the stop part of incident signal all belongs to the scope of application of the present invention.When extension 266 was in state shown in Figure 7, incident signal S1 was subjected to stopping of extension 266, and makes receiver 264 can't accept any signal S3 that penetrates.When extension 266 was in state shown in Figure 8, incident signal S1 was not subjected to stopping of extension 266, penetrated signal S3 and make that receiver 264 is accepted.Whereby, receiver 264 is received penetrates signal S3 and can change along with the rotation of first return idler 16.

Fig. 9 shows the allocation plan of tachometer and return idler.In this configuration, the 3rd rotating speed detector 30 can be a tachometer, directly couples with the 3rd return idler 24 and can directly detect the rotating speed of the 3rd return idler 24.Available tachometer is including but not limited to current type, voltage-type, and magnetic-type tachometer.

The above is preferred embodiment of the present invention and design, this embodiment and design only illustrate, be not to be used to limit the scope of the invention, all with the technological means that is equal to or any distortion in the scope that claim was contained, all do not break away from interest field of the present invention and category thereof.

The explanation of assembly conventional letter:

S1 incident signal

S2 reflects signal

S3 penetrates signal

The P paper

1 automatic paper conveyer

10 housings

12 motors

14 first active rollers

16 first return idlers

18 second active rollers

20 second return idlers

22 the 3rd active rollers

24 the 3rd return idlers

26 first rotating speed detectors

28 second rotating speed detectors

30 the 3rd rotating speed detectors

32 control circuits

34 falt bed scanners

36 ray machines

202 sections

204 sections

206 peripheries

262 transmitters

264 receivers

266 extensions

268 through holes

282 transmitters

284 receivers

286 extensions

Claims

1. the automatic carriage device of a tool detecting real-time paperboard function comprises:

Housing;

Motor is installed on the described housing;

Active roller is driven by described motor and rotates;

Return idler is subjected to the driving of described active roller and rotates, and described return idler and described active roller acting in conjunction are to transmit a paper by therebetween;

The rotating speed detector is in order to a rotating speed of detecting described return idler and export a rotary speed signal;

Control circuit receives described rotary speed signal, and judges that according to described rotary speed signal whether paper blocks;

It is characterized in that described rotating speed detector comprises:

Extension, be fixed to described return idler and with described return idler co-rotation;

Transmitter is in order to launch an incident signal to described extension;

Receiver penetrates signal in order to receive by one of described extension, and the described signal that penetrates changes along with the rotation of described extension.