CN113772452A - Paper feeding mechanism of paper feeder and paper feeding method thereof - Google Patents
Paper feeding mechanism of paper feeder and paper feeding method thereof Download PDFInfo
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- CN113772452A CN113772452A CN202010562096.6A CN202010562096A CN113772452A CN 113772452 A CN113772452 A CN 113772452A CN 202010562096 A CN202010562096 A CN 202010562096A CN 113772452 A CN113772452 A CN 113772452A
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- 238000001514 detection method Methods 0.000 claims abstract description 52
- 238000011897 real-time detection Methods 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 15
- 238000007664 blowing Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 7
- 238000007639 printing Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 4
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
- B65H3/0808—Suction grippers
- B65H3/0816—Suction grippers separating from the top of pile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
- B65H1/18—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device controlled by height of pile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/48—Air blast acting on edges of, or under, articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
- B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1131—Size of sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
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- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
The invention discloses a paper feeding mechanism of a paper feeder and a paper feeding method thereof, comprising a paper separating device, a paper conveying device, a paper separating device height adjusting mechanism and a paper stack height real-time detection adjusting device, wherein the paper separating device is arranged above a paper feeding table, the paper conveying device is arranged at a paper conveying station, the paper separating device height adjusting mechanism is arranged on a paper feeding head body and comprises a sliding guide assembly and an H proximity sensor, the paper stack height real-time detection adjusting device is arranged below a paper conveying supporting plate and comprises a detection finger propelling mechanism, a detection finger lifting mechanism and an H proximity sensor, the paper feeding method is that when the paper is separated and conveyed, the paper is fed through the height adjusting mechanism of the paper separating device and the height real-time detection adjusting device of the paper stack, the paper stack with the bending and warping paper can be automatically and reliably separated and stably conveyed, and the paper stack has good adaptability to the paper stack; frequent shutdown of equipment is avoided, the working efficiency is improved, and the production cost is reduced; the equipment operation difficulty is small, and the labor intensity is low.
Description
Technical Field
The invention relates to a paper feeding mechanism of printing and packaging machinery, in particular to a paper feeding mechanism of a paper feeder, and also relates to a paper feeding method of the paper feeding mechanism of the paper feeder, belonging to the field of printing and packaging machinery.
Background
In the printing and packaging equipment, the paper feeder is used for completing continuous separation and conveying of paper, simultaneously cannot damage contaminated paper, and detects and controls unqualified paper such as empty paper without paper separated and conveyed, double paper with two pieces of paper separated and conveyed simultaneously, and a plurality of paper with more than two pieces of paper separated and conveyed simultaneously. The paper feeder generally comprises a paper separating device, a paper conveying device, a paper feeding table, a paper detection and control device and a control system, wherein the paper separating device continuously separates paper of a paper stack, and then the paper conveying device conveys the separated paper to a main machine of the equipment; the paper feeding table is responsible for bearing the paper stack and automatically rises, so that the distance between the top paper of the paper stack and the paper separating device is maintained in an optimal range, the paper detecting device sends a stop signal when detecting empty paper, double paper or multiple paper which is mistakenly sent by the paper feeding mechanism, and the control system controls the paper feeding mechanism to stop paper conveying so as to avoid damage to a host machine and waste products.
The paper feeding mechanism continuously separates and conveys paper on a paper stack in the operation process, the height of the paper stack is gradually reduced along with the gradual reduction of the number of the paper stack, the distance H (the optimal range is usually 25-35mm) between the paper on the top layer of the paper stack and a paper separating suction nozzle on the paper separating device and the distance H (the optimal range is usually 6-10mm) between the paper on the top layer of the paper stack and the highest point of a turning plate are gradually increased, so that the paper feeding table is required to gradually lift the paper of the paper stack to ensure that the H and the H are in the optimal range until the paper of the paper stack is completely separated and conveyed, if the H and the H are larger than the optimal range, empty paper can be generated, and if the H and the H are smaller than the optimal range, double paper and multiple paper can be generated.
In order to solve the problem that the paper feeding mechanism mistakenly feeds empty paper, double paper or multiple paper, in the prior art, a lifting signal of the paper feeding table is sent by a detection device for controlling h and is transmitted to a paper feeding table lifting motor, and when h is larger than 35mm, the paper feeding table lifting motor drives the paper feeding table to lift with a paper stack. According to the control mode, when the paper stack is not warped or bent greatly, the paper feeder can run stably and reliably, once the warping and bending of the paper stack exceeds a certain limit, H and H cannot be simultaneously met in an optimal range, so that unqualified paper such as empty paper, double paper and multiple paper appears, the paper detection device and the control system can send out a stop signal, in application practice, the two values of H and H are adjusted to be optimal and not ideal at the same time only by lifting the paper stack of the paper feeder, the H is often adjusted to be in the optimal range, the H possibly exceeds the optimal range, the H and the H are not good, and the paper feeder is easy to consider. In order to ensure the normal operation of equipment, the problems of bending and warping of paper sheets of a paper stack need to be solved, two measures are taken at present, firstly, a machine operator adjusts the paper stack with bending and warping exceeding a certain limit, the common method is to perform 'wedge inserting' treatment with different strength on different positions of the paper stack with serious bending and warping in advance according to experience, and the solution is easy to fail due to improper handling and pinching. Secondly, the bending and warping degree of the paper at the upper end of the paper stack is observed in real time by an operator, and the height of the paper separating device is adjusted in time. The method is a supplement to the failure of the 'wedge inserting' measure, and once an operator is careless to observe or fails to adjust the height of the paper separating device in time according to the warping and bending degree of the paper stack, unqualified paper such as empty paper, double paper, multiple paper and the like can possibly occur, so that equipment is stopped.
Therefore, the prior art has the defects that the operation personnel is required to have higher professional technical quality and rich working experience, the operation difficulty of the equipment is high, the labor intensity of the operation personnel is increased, the downtime of the equipment is increased, the operation rate of the machine is reduced, the product cost is increased, and the enterprise competitiveness is reduced.
Disclosure of Invention
The invention aims to provide a paper feeding mechanism of a paper feeder and a paper feeding method thereof by additionally arranging a paper separating device height adjusting mechanism and a paper stack height real-time detection adjusting device, so as to achieve the purposes of eliminating the influence of bending and warping of paper sheets of a paper stack on the paper feeder, enabling the paper feeder to reliably separate and stably convey the paper stacks with the bent and warped paper sheets automatically under the condition of no human intervention, enhancing the adaptability of equipment to the paper stack, and reducing the operation difficulty of the equipment and the labor intensity of machine operators.
The invention is realized by the following technical scheme:
a paper feeding mechanism of a paper feeder comprises a paper feeding table, a paper separating device, a paper conveying device, a paper separating device height adjusting mechanism and a paper stack height real-time detection adjusting device, wherein the paper feeding table is arranged at a paper feeding station;
the paper conveying device comprises a paper conveying turning plate arranged on a paper feeding part, a paper conveying turning plate control mechanism, a paper conveying roller, a paper conveying point wheel and a paper conveying point wheel control mechanism, a paper conveying supporting plate, a flat belt and a paper conveying pressing wheel, wherein the paper conveying turning plate control mechanism comprises a paper conveying turning plate swing frame arranged on a paper conveying turning plate swing frame shaft, a turning plate swing frame tension spring connected to the paper conveying turning plate swing frame, a paper conveying turning plate cam contacted with a turning plate cam follower on the paper conveying turning plate swing frame, a paper conveying turning plate connecting rod connected with the paper conveying turning plate swing frame, a paper conveying turning plate rocker connected with the paper conveying turning plate connecting rod, the other end of the paper conveying turning plate rocker and the paper conveying turning plate are coaxially arranged on the paper conveying turning plate swing frame shaft, the paper conveying point wheel swing frame tension spring connected to the paper conveying turning plate swing frame, a paper conveying point wheel cam contacted with a point wheel cam follower on the paper conveying point wheel swing frame, a paper conveying point cam follower, A paper conveying point wheel connecting rod connected with the paper conveying point wheel swing frame, a paper conveying point wheel rocker connected with the paper conveying point wheel connecting rod, and a paper conveying point wheel coaxially arranged at the other end of the paper conveying point wheel rocker, wherein a paper conveying roller is arranged below the paper conveying point wheel, a paper conveying supporting plate is arranged in a paper conveying channel, a flat belt is arranged on the paper conveying supporting plate, and a paper conveying pressing wheel is arranged on the paper conveying supporting plate;
the paper feeding table is arranged at the paper feeding station;
the height adjusting mechanism of the paper separating device is characterized by comprising an upper fixing plate, a lifting motor, sliding bearings, guide shafts, a mounting substrate, a screw rod nut, a screw rod, a coupler and an h proximity sensor, wherein the upper fixing plate is fixed on a rack, the lifting motor is fixed in the middle of the upper fixing plate, the sliding bearings are fixed at two ends of the upper fixing plate, the guide shafts are arranged in the sliding bearings, the lower ends of the guide shafts are fixed at two ends of the mounting substrate, the screw rod nut is fixed in the middle of the mounting substrate, the upper end of the screw rod is connected with the motor through the coupler, the lower part of the screw rod is screwed in the screw rod nut, the mounting substrate is fixed on a paper feeding head body of the paper separating device, and the h proximity sensor is arranged at the lower part of the paper feeding head body and is close to a detection point of a stepping foot;
the paper stack height real-time detection and adjustment device comprises a detection finger pushing mechanism, a detection finger lifting mechanism, a detection finger and an H proximity sensor, wherein the detection finger pushing mechanism is arranged below a paper conveying supporting plate and comprises a pushing swing frame, a pushing swing frame shaft, a pushing swing frame tension spring, a pushing cam follower and a pushing cam; detect the finger and raise the mechanism including raising the rocker, raise the rocker axle, raise the rocker extension spring, raise the cam follower, raise the cam, raise the connecting rod, it is epaxial raising the rocker to raise the rocker setting, it is connected with on the rocker to raise to be raised the rocker extension spring, it has the cam follower of raising to raise rocker lower extreme coaxial arrangement, it contacts with raising the cam follower to raise the cam, the upper end shaft type of raising the rocker is being connected the lower extreme of raising the connecting rod, the upper end shaft type of raising the connecting rod is being connected the middle part that detects the finger, H proximity sensor sets up and is being raised the rocker top, it is close mutually with the check point of raising the rocker.
The height adjusting mechanism of the paper separating device is used for controlling the paper separating device to rise or fall according to the distance h between the top paper of the paper stack and the paper separating suction nozzle detected by the h proximity sensor; and controlling the paper stack bearing platform to ascend according to the distance H between the top paper of the paper stack and the highest point of the turning plate, which is detected by the H proximity sensor, so as to ensure that H is in the optimal range.
The detection finger is a contact detection body with a certain width and curvature, and the front end (finger end) is thinner and gradually becomes thicker backwards, so that the detection finger is used for performing real-time touch on the height of the paper on the top layer of the paper stack.
The detection finger pushing mechanism and the detection finger lifting mechanism are used for respectively controlling the detection fingers to do horizontal movement, vertical movement and swing combined periodic movement, and are synchronous with the movement of the paper separating device, so that the detection fingers are controlled to perform real-time touch detection on the height of the paper on the top layer of the paper stack.
The H-proximity sensor and the H-proximity sensor adopt a QL-05N series inductive proximity switch, and eddy current generated when a conductor approaches acts on the inside to change circuit parameters of the H-proximity sensor and the H-proximity sensor, so that whether the conductor approaches is identified, and further, the action of a corresponding mechanism is controlled.
A paper feeding method of a paper feeding mechanism of a paper feeder comprises the steps of paper separation, paper conveying, height adjustment of a paper separation device and real-time detection and adjustment of the height of a paper stack, and comprises the following steps:
a, separation of paper: the paper separating suction nozzle moves downwards, after sucking the uppermost piece of paper, a paper foot is stepped to insert, the lower piece of paper is pressed and air blowing is started, the sucked paper is separated from the lower piece of paper, then the paper transferring suction nozzle moves rightwards and simultaneously sucks the paper with the paper separating suction nozzle, then the paper separating suction nozzle cuts off air and releases the paper, the paper foot is stepped to stop blowing air to leave the paper stack, and the paper transferring suction nozzle moves leftwards to transfer the paper to the paper conveying roller;
b, conveying of paper: the paper conveying turning plate controls the paper to leave the paper stack and keeps the correct position of the paper when the paper leaves the paper stack through periodic swing when the paper is sucked up by the paper separating suction nozzle and the paper transferring suction nozzle, the paper is returned after the paper is transferred to the paper conveying roller by the paper transferring suction nozzle after air is cut off, the paper is conveyed to the paper conveying channel by the paper conveying roller and the paper conveying point wheel, and the paper is continuously conveyed out by the flat belt and the paper conveying pinch roller;
c, height adjustment of the paper separating device: when the h proximity sensor detects that h is smaller than an optimal range or larger than the optimal range, the control system controls the lifting motor to enable the screw rod to rotate forwards or backwards to drive the paper separation device to vertically move, so that h is kept in the optimal range;
d, detecting and adjusting the height of the paper stack in real time: when carrying out the paper separation, detect finger advancing mechanism, it detects the finger and raises the mechanism and control respectively and detect the finger and carry out real-time "touch" to paper buttress top layer paper, the change of paper buttress height makes the motion angle who raises the rocker change through detecting the "touch" of finger, H proximity sensor can detect the change of paper buttress height through detecting the motion change of raising the rocker in real time, along with paper buttress height reduces gradually, when the distance H of paper buttress top layer paper and defeated paper turning plate peak is less than optimum range, control system control paper feeding platform bears the paper buttress and rises to ensure H at optimum range.
In conclusion, the technical scheme of the invention can easily maintain H, h in the optimal range at the same time, completely overcome the defects in the background art, and provide effective guarantee for the paper feeder to efficiently and reliably separate and convey paper. The invention is mainly different from the background art in that in the background art, a signal source sent by a detection device for detecting H in a paper separation device controls a paper feeding platform to adjust the height of a paper stack, and simultaneously influences the optimal range of H, wherein H is maintained in the optimal range, but H possibly exceeds the optimal range; the invention separately sets a paper pile height real-time detection adjusting mechanism, which is specially used for controlling the paper feeding platform to adjust the optimal range of H, the optimal range of H is ensured by the height adjusting mechanism of the paper separating device which is separately set at the same time, therefore, the invention has the advantages that:
1. the automatic paper stack separating and conveying device can automatically and reliably separate and stably convey the paper stack with bent and warped paper, and has good adaptability to the paper stack;
2. frequent shutdown of equipment is avoided, the working efficiency is improved, and the production cost is reduced;
3. the operation difficulty of the equipment is small, and the labor intensity is low.
Drawings
FIG. 1 is a schematic of the present invention.
In the figure: a paper feeding table 1, a paper feeding head body 2, a paper separating suction nozzle 3, a paper transferring suction nozzle 4, a stepping foot 5, a paper conveying turning plate 6, a paper conveying roller 7, a paper conveying point wheel 8, a paper conveying supporting plate 9, a paper conveying pinch roller 10, a paper conveying turning plate swing frame shaft 11, a paper conveying turning plate swing frame 12, a turning plate swing frame tension spring 13, a turning plate cam follower 14, a paper conveying turning plate cam 15, a paper conveying turning plate connecting rod 16, a paper conveying turning plate rocker 17, a paper conveying turning plate shaft 18, a paper conveying point wheel swing frame shaft 19, a paper conveying point wheel swing frame 20, a point wheel swing frame tension spring 21, a point wheel cam follower 22, a paper conveying point wheel cam 23, a paper conveying point wheel connecting rod 24, a paper conveying point wheel rocker 25, an upper fixing plate 26, a lifting motor 27, a sliding bearing 28, a guide shaft 29, a mounting base plate 30, a lead screw nut 31, a lead screw 32, a coupling 33, an H proximity sensor 34, a detection finger 35, an H proximity sensor 36, a propulsion swing frame 37, a propulsion swing frame shaft 38, a propulsion wheel swing frame shaft 38, a paper feeding wheel swing frame spring, a paper conveying roller and a paper conveying wheel swing frame, A push swing frame tension spring 39, a push cam follower 40, a push cam 41, a lifting swing frame 42, a lifting swing frame shaft 43, a lifting swing frame tension spring 44, a lifting cam follower 45, a lifting cam 46, a lifting connecting rod 47 and a paper stack 48
Detailed Description
The following detailed description is made by way of example with reference to the accompanying drawings:
a paper feeding mechanism of a paper feeder is disclosed, as shown in figure 1, and comprises a paper feeding table 1, a paper separating device, a paper conveying device, a paper separating device height adjusting mechanism and a paper stack height real-time detection adjusting device, wherein the paper feeding table 1 is arranged at a paper feeding station, the paper separating device comprises a paper feeding head body 2 arranged above the paper feeding table 1, a paper separating suction nozzle 3 arranged on the paper feeding head body 2, a paper delivering suction nozzle 4 and a paper stepping foot 5, the paper separating suction nozzle 3 and the paper delivering suction nozzle 4 are respectively connected with an air suction pipeline, and the paper stepping foot 5 is simultaneously provided with a paper separating blowing nozzle connected with an air blowing pipeline;
the paper conveying device comprises a paper conveying turning plate 6 arranged on a paper feeding part, a paper conveying turning plate control mechanism, a paper conveying roller 7, a paper conveying point wheel 8, a paper conveying point wheel control mechanism, a paper conveying supporting plate 9, a flat belt and a paper conveying pressing wheel 10, wherein the paper conveying turning plate control mechanism comprises a paper conveying turning plate swing frame 12 arranged on a paper conveying turning plate swing frame shaft 11, a turning plate swing frame tension spring 13 connected to the paper conveying turning plate swing frame 12, a paper conveying turning plate cam 15 contacted with a turning plate cam follower 14 on the paper conveying turning plate swing frame 12, a paper conveying turning plate connecting rod 16 connected with the paper conveying turning plate swing frame 12, a paper conveying turning plate rocker 17 connected with the paper conveying turning plate connecting rod 16, the other end of the paper conveying turning plate rocker 17 and the paper conveying turning plate 6 are coaxially arranged on a paper conveying turning plate shaft 18, the paper conveying point wheel control mechanism comprises a paper conveying turning plate swing frame 20 arranged on a paper conveying point wheel swing frame shaft 19, a point wheel swing frame tension spring 21 connected with the paper conveying point wheel swing frame 20, A paper conveying point wheel cam 23 contacted with a point wheel cam follower 22 on the paper conveying point wheel swing frame 20, a paper conveying point wheel connecting rod 24 connected with the paper conveying point wheel swing frame 20, a paper conveying point wheel rocker 25 connected with the paper conveying point wheel connecting rod 24, and the other end of the paper conveying point wheel rocker 25 are coaxially provided with a paper conveying point wheel 8, a paper conveying roller 7 is arranged below the paper conveying point wheel 8, a paper conveying supporting plate 9 is arranged in a paper conveying channel, a flat belt is arranged on the paper conveying supporting plate 9, and a paper conveying pressing wheel 10 is arranged on the paper conveying supporting plate 9;
it is characterized in that the height adjusting mechanism of the paper separating device comprises an upper fixing plate 26, a lifting motor 27, a sliding bearing 28, a guide shaft 29, a mounting base plate 30, a screw rod nut 31, a screw rod 32, a coupling 33 and an h proximity sensor 34, wherein the upper fixing plate 26 is fixed on a frame, the lifting motor 27 is fixed in the middle of the upper fixing plate 26, the sliding bearings 28 are fixed at two ends of the upper fixing plate 26, the guide shaft 29 is arranged in the sliding bearing 28, the lower end of the guide shaft 29 is fixed at the two ends of the installation base plate 30, the middle of the installation base plate 30 is fixed with a screw nut 31, the upper end of a screw 32 is connected with the lifting motor 27 through a coupler 33, the lower part of the screw 32 is screwed in the screw nut 31, the mounting substrate 30 is fixed on the paper feeding head body 2 of the paper separating device, and the h proximity sensor 34 is arranged at the lower part of the paper feeding head body 2 and is close to the detection point of the stepping foot 5;
the paper pile height real-time detection and adjustment device comprises a detection finger pushing mechanism, a detection finger lifting mechanism, a detection finger 35 and an H proximity sensor 36 which are arranged below a paper conveying supporting plate 9, wherein the detection finger pushing mechanism comprises a pushing swing frame 37, a pushing swing frame shaft 38, a pushing swing frame tension spring 39, a pushing cam follower 40 and a pushing cam 41, the pushing swing frame 37 is arranged on the pushing swing frame shaft 38, one end of the lower part of the pushing swing frame 37 is connected with the pushing swing frame tension spring 39, the other end of the lower part of the pushing swing frame 37 is coaxially provided with the pushing cam follower 40, the pushing cam 41 is in contact with the pushing cam follower 40, and the rear end of the detection finger 35 is in shaft connection with the top end of the pushing swing frame 37; the detection finger lifting mechanism comprises a lifting swing frame 42, a lifting swing frame shaft 43, a lifting swing frame tension spring 44, a lifting cam follower 45, a lifting cam 46 and a lifting connecting rod 47, wherein the lifting swing frame 42 is arranged on the lifting swing frame shaft 43, the lifting swing frame tension spring 44 is connected to the lifting swing frame 42, the lifting cam follower 45 is coaxially arranged at the lower end of the lifting swing frame 42, the lifting cam 46 is in contact with the lifting cam follower 45, the upper end of the lifting swing frame 42 is in shaft connection with the lower end of the lifting connecting rod 47, the upper end of the lifting connecting rod 47 is in shaft connection with the middle of the detection finger 35, and the H proximity sensor 36 is arranged above the lifting swing frame 42 and is close to a detection point of the lifting swing frame 42;
the sensing finger 35 is a contact sensing body with a certain width and curvature, and the front end (finger end) is thinner and gradually becomes thicker backwards, so as to perform real-time touch on the height of the top paper of the paper stack 48.
A paper feeding method of a paper feeding mechanism of a paper feeder refers to the attached figure 1, and comprises paper separation, paper conveying, height adjustment of a paper separation device and real-time detection and adjustment of the height of a paper stack, wherein the paper feeder refers in particular to the paper feeder of single-paper printing equipment and post-printing packaging equipment, and comprises the following steps:
a, separation of paper: paper separation processes are well known in the art, namely: firstly, the paper separating suction nozzle 3 moves downwards, sucks the uppermost paper, lifts the uppermost paper, tilts the uppermost paper backwards to prevent double-sheet suction and is beneficial to the insertion of the stepping foot 5, presses the lower paper and opens the air blowing air path to blow air after the stepping foot 5 is inserted, so that the sucked paper is separated from the lower paper, then the paper transferring suction nozzle 4 moves rightwards to suck the paper, controls the paper with the paper separating suction nozzle 3 simultaneously, then the paper separating suction nozzle 3 cuts off the air path to discharge the paper, transfers the paper to the paper transferring suction nozzle 4 and then ascends, at the moment, the stepping foot 5 stops blowing air to leave the paper stack 48, and the paper transferring suction nozzle 4 moves leftwards to transfer the paper to the paper conveying roller 7;
b, conveying of paper: the method of conveying paper is well known in the art, namely: the paper conveying turning plate 6 periodically swings through a control mechanism, and aims to control the paper to leave the paper stack 48 and keep the correct position of the paper when the paper leaves the paper stack 48 when the paper is sucked up by the paper separating suction nozzle 3 and the paper conveying suction nozzle 4, the paper is conveyed to the paper conveying roller 7 by the paper conveying suction nozzle 4 and then is returned after air is cut off, the paper is conveyed to the paper conveying channel by the paper conveying roller 7 and the paper conveying point wheel 8, and the paper is continuously conveyed out by the flat belt and the paper conveying pinch roller 10;
the paper feeding method of the paper feeding mechanism of the paper feeder is characterized by further comprising the following steps:
c, adjusting the height of the paper separating device, and adjusting the distance h between the top paper of the paper stack 48 and the paper separating suction nozzle 3: when the paper is separated, the h proximity sensor 34 can detect the angle change of the stepping foot 5 caused by the contact with the height of the paper stack 48 in real time, so that the distance h between the top paper of the paper stack 48 and the paper separation suction nozzle 3 is judged, when the h proximity sensor 34 detects that h is smaller than the optimal range, the paper stack is usually seriously bent, or h is larger than the optimal range, the paper stack is usually seriously warped, the control system can control the lifting motor 27 to enable the screw rod 32 to rotate forwards or reversely according to a detection signal, and the paper separation device is driven to vertically move under the matching of the guide shaft 29 and the sliding bearing 28, so that the real-time adjustment of the height of the paper separation device is realized, and h is kept in the optimal range;
d, detecting and adjusting the height of the paper stack in real time, and adjusting the distance H between the top layer of paper in the paper stack 48 and the highest point of the paper conveying turning plate 6: when the paper is separated, the detection finger 35 completes the periodic motion of horizontal motion, vertical motion and swing synthesis respectively through the detection finger pushing mechanism and the detection finger lifting mechanism, so that the top layer paper of the paper stack 48 is touched in real time, the motion of the detection finger 35 is synchronous with the motion of the paper separating device, the change of the height of the paper stack 48 can lead the touch angle of the detection finger 35 to change correspondingly, so that the motion angle (track) of the lifting swing frame 42 changes, the different heights of the paper stacks touched correspond to the different motion angles of the lifting swing frame 42, therefore, the H proximity sensor 36 can detect the change of the height of the paper stack 48 through detecting the motion change of the lifting swing frame 42 in real time, the height of the paper stack 48 is gradually reduced along with the continuous operation of the equipment, when the distance H between the top layer paper of the paper stack 48 and the highest point of the paper conveying swing plate 6 is lower than the optimal range, the control system controls the paper stack 48 carried by the paper table 1 to ascend according to the detection signal so as to ensure that H is in an optimal range.
Claims (3)
1. A paper feeding mechanism of a paper feeder comprises a paper feeding table (1), a paper separating device, a paper conveying device, a paper separating device height adjusting mechanism and a paper stack height real-time detection adjusting device, wherein the paper feeding table (1) is arranged at a paper feeding station, the paper separating device comprises a paper feeding head body (2) arranged above the paper feeding table (1), a paper separating suction nozzle (3) arranged on the paper feeding head body (2), a paper transferring suction nozzle (4) and a paper stepping foot (5), the paper separating suction nozzle (3) and the paper transferring suction nozzle (4) are respectively connected with a suction pipeline, and a paper separating blowing nozzle connected with a blowing pipeline is simultaneously arranged on the paper stepping foot (5);
the paper conveying device comprises a paper conveying turning plate (6) and a paper conveying turning plate control mechanism which are arranged on a paper feeding part, a paper conveying roller (7), a paper conveying point wheel (8) and a paper conveying point wheel control mechanism, a paper conveying supporting plate (9), a flat belt and a paper conveying pressing wheel (10), wherein the paper conveying turning plate control mechanism comprises a paper conveying turning plate swing frame (12) arranged on a paper conveying turning plate swing frame shaft (11), a turning plate swing frame tension spring (13) connected to the paper conveying turning plate swing frame (12), a paper conveying turning plate cam (15) contacted with a turning plate cam follower (14) on the paper conveying turning plate swing frame (12), a paper conveying turning plate connecting rod (16) connected with the paper conveying turning plate swing frame (12), and a paper conveying turning plate rocker (17) connected with the paper conveying turning plate connecting rod (16), the other end of the paper conveying turning plate rocker (17) and the paper conveying turning plate swing frame (6) are coaxially arranged on the paper conveying turning plate shaft (18), and the paper conveying point control mechanism comprises a paper conveying turning plate swing wheel swing frame (20) arranged on a paper conveying point wheel swing frame shaft (19) ) The paper feeding device comprises a paper feeding point wheel swing frame tension spring (21) connected to a paper feeding point wheel swing frame (20), a paper feeding point wheel cam (23) contacted with a point wheel cam follower (22) on the paper feeding point wheel swing frame (20), a paper feeding point wheel connecting rod (24) connected with the paper feeding point wheel swing frame (20), a paper feeding point wheel rocker (25) connected with the paper feeding point wheel connecting rod (24), and a paper feeding point wheel (8) coaxially arranged at the other end of the paper feeding point wheel rocker (25), wherein a paper feeding roller (7) is arranged below the paper feeding point wheel (8), a paper feeding supporting plate (9) is arranged in a paper feeding channel, a flat belt is arranged on the paper feeding supporting plate (9), and a paper feeding pressing wheel (10) is arranged on the paper feeding supporting plate (9);
the paper separating device height adjusting mechanism is characterized by comprising an upper fixing plate (26), a lifting motor (27), a sliding bearing (28), a guide shaft (29), a mounting base plate (30), a screw rod nut (31), a screw rod (32), a coupler (33) and an h proximity sensor (34), wherein the upper fixing plate (26) is fixed on a rack, the lifting motor (27) is fixed in the middle of the upper fixing plate (26), the sliding bearing (28) is fixed at two ends of the upper fixing plate (26), the guide shaft (29) is arranged in the sliding bearing (28), the lower end of the guide shaft (29) is fixed at two ends of the mounting base plate (30), the screw rod nut (31) is fixed in the middle of the mounting base plate (30), the upper end of the screw rod (32) is connected with the lifting motor (27) through the coupler (33), the lower part of the screw rod (32) is screwed in the screw rod nut (31), the mounting base plate (30) is fixed on a paper feeding head body (2) of the paper separating device, the h proximity sensor (34) is arranged at the lower part of the paper feeding head body (2) and is close to a detection point of the stepping foot (5);
the paper stack height real-time detection and adjustment device comprises a detection finger pushing mechanism, a detection finger lifting mechanism, a detection finger (35) and an H proximity sensor (36), wherein the detection finger pushing mechanism is arranged below a paper conveying supporting plate (9), and comprises a pushing swing frame (37), a pushing swing frame shaft (38), a pushing swing frame tension spring (39), a pushing cam follower (40) and a pushing cam (41), the pushing swing frame (37) is arranged on the pushing swing frame shaft (38), one end of the lower part of the pushing swing frame (37) is connected with the pushing swing frame tension spring (39), the other end of the lower part of the pushing swing frame (37) is coaxially provided with the pushing cam follower (40), the pushing cam (41) is in contact with the pushing cam follower (40), and the rear end of the detection finger (35) is in shaft connection with the top end of the pushing swing frame (37); the detection finger lifting mechanism comprises a lifting swing frame (42), a lifting swing frame shaft (43), a lifting swing frame tension spring (44), a lifting cam follower (45), a lifting cam (46) and a lifting connecting rod (47), wherein the lifting swing frame (42) is arranged on the lifting swing frame shaft (43), the lifting swing frame tension spring (44) is connected to the lifting swing frame (42), the lifting cam follower (45) is coaxially arranged at the lower end of the lifting swing frame (42), the lifting cam (46) is in contact with the lifting cam follower (45), the upper end of the lifting swing frame (42) is connected with the lower end of the lifting connecting rod (47) in a shaft mode, the middle of the detection finger (35) is connected to the upper end of the lifting connecting rod (47) in a shaft mode, an H proximity sensor (36) is arranged above the lifting swing frame (42), and is close to a detection point of the lifting swing frame (42).
2. The paper feeding mechanism according to claim 1, wherein the sensing finger (35) is a contact type sensing body having a certain width and a certain curvature, and a finger end at a front end is thinner and becomes thicker gradually toward the rear.
3. The invention relates to a paper feeding method of a paper feeding mechanism of a paper feeder, which comprises the steps of paper separation, paper conveying, height adjustment of a paper separation device and real-time detection and adjustment of the height of a paper stack, wherein the paper feeder refers in particular to the paper feeder of single-paper printing equipment and post-printing packaging equipment, and comprises the following steps:
a, separation of paper: paper separation processes are well known in the art, namely: firstly, the paper separating suction nozzle (3) moves downwards, after sucking the topmost paper, the paper is lifted upwards and tilted backwards to prevent double-paper suction and is beneficial to the insertion of the stepping foot (5), after the stepping foot (5) is inserted, the lower paper is pressed and an air blowing air path is opened to blow air so as to separate the sucked paper from the lower paper, then the paper transferring suction nozzle (4) moves rightwards to suck the paper, the paper and the paper separating suction nozzle (3) control the paper at the same time, then the paper separating suction nozzle (3) cuts off the air path to discharge the paper, the paper is transferred to the paper transferring suction nozzle (4) and then rises, at the moment, the stepping foot (5) stops blowing air to leave a paper stack (48), and the paper transferring suction nozzle (4) moves leftwards to transfer the paper to the paper conveying roller (7);
b, conveying of paper: the method of conveying paper is well known in the art, namely: the paper conveying turning plate (6) periodically swings through a control mechanism, and aims to control the paper to leave the paper stack (48) and keep the correct position of the paper when the paper leaves the paper stack (48) when the paper is sucked up by the paper separating suction nozzle (3) and the paper transferring suction nozzle (4), the paper is delivered to the paper conveying roller (7) by the paper transferring suction nozzle (4), air is cut off, the paper returns, the paper conveying roller (7) and the paper conveying point wheel (8) convey the paper to the paper conveying channel, and the paper is continuously conveyed out through the flat belt and the paper conveying pressing wheel (10);
the paper feeding method of the paper feeding mechanism of the paper feeder is characterized by further comprising the following steps:
c, adjusting the height of the paper separating device, and adjusting the distance h between the top paper of the paper stack (48) and the paper separating suction nozzle (3): when paper is separated, the h proximity sensor (34) can detect the angle change of the paper stepping foot (5) caused by the contact with the height of the paper stack (48) in real time, so that the distance h between the paper on the top layer of the paper stack (48) and the paper separating suction nozzle (3) is judged, when the h proximity sensor (34) detects that h is smaller than the optimal range, the paper on the paper stack is usually seriously bent at the moment, or when h is detected to be larger than the optimal range, the paper stack is usually seriously warped at the moment, the control system can control the lifting motor (27) to enable the screw rod (32) to rotate forwards or reversely according to a detection signal, and the paper separating device is driven to vertically move under the cooperation of the guide shaft (29) and the sliding bearing (28), so that the height of the paper separating device is adjusted in real time, and h is kept in the optimal range;
d, detecting and adjusting the height of the paper stack in real time, and adjusting the distance H between the top paper of the paper stack (48) and the highest point of the paper conveying turning plate (6): when paper is separated, the detection finger (35) completes the periodic motion of horizontal motion, vertical motion and swing synthesis through the detection finger pushing mechanism and the detection finger lifting mechanism respectively, so that the top paper of the paper stack (48) is touched in real time, the motion of the detection finger (35) is synchronous with the motion of the paper separating device, the change of the height of the paper stack (48) can lead the touch angle of the detection finger (35) to change correspondingly, the motion angle of the lifting swing frame (42) changes, the different heights of the paper stacks touched correspond to the different motion angles of the lifting swing frame (42), therefore, the H proximity sensor (36) can detect the change of the height of the paper stack (48) through detecting the motion change of the lifting swing frame (42) in real time, and the height of the paper stack (48) is gradually reduced along with the continuous operation of the equipment, when the distance H between the top paper of the paper stack (48) and the highest point of the paper conveying turning plate (6) is lower than the optimal range, the control system can control the paper stack (48) carried by the paper feeding table (1) to ascend according to the detection signal so as to ensure that the H is in the optimal range.
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| CN202010562096.6A CN113772452B (en) | 2020-06-10 | 2020-06-10 | Paper feeding mechanism of paper feeder and paper feeding method thereof |
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| CN202010562096.6A CN113772452B (en) | 2020-06-10 | 2020-06-10 | Paper feeding mechanism of paper feeder and paper feeding method thereof |
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| CN117262812A (en) * | 2023-11-21 | 2023-12-22 | 南京爱德印刷有限公司 | Special thin dictionary paper Zhang Jiqi folding device |
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