CN113772452B - 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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- CN113772452B CN113772452B CN202010562096.6A CN202010562096A CN113772452B CN 113772452 B CN113772452 B CN 113772452B CN 202010562096 A CN202010562096 A CN 202010562096A CN 113772452 B CN113772452 B CN 113772452B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 238000011897 real-time detection Methods 0.000 claims abstract description 15
- 230000008093 supporting effect Effects 0.000 claims abstract description 11
- 230000033001 locomotion Effects 0.000 claims description 21
- 238000000926 separation method Methods 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 11
- 238000007639 printing Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
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- 230000001976 improved effect Effects 0.000 abstract description 2
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- 238000005452 bending Methods 0.000 description 9
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- 230000033228 biological regulation Effects 0.000 description 2
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Classifications
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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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- Engineering & Computer Science (AREA)
- 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 feeding station, the paper separating device height adjusting mechanism is arranged on a paper feeding head body and comprises a sliding guide component and an H proximity sensor, the paper stack height real-time detection adjusting device is arranged below a paper feeding supporting plate and comprises a finger detection pushing mechanism, a finger detection lifting mechanism and an H proximity sensor, and the paper feeding method is that the paper stack can be reliably separated and stably conveyed by the paper separating device height adjusting mechanism and the paper stack height real-time detection adjusting device when the paper is separated and conveyed, so that the paper feeding mechanism 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 has small operation difficulty and low labor intensity.
Description
Technical Field
The invention relates to a paper feeding mechanism of a printing and packaging machine, 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 the printing and packaging machine.
Background
In the printing and packaging equipment, the paper feeder is used for completing continuous separation and conveying of paper, meanwhile, the polluted paper cannot be damaged, and unqualified paper such as empty paper without paper being separated and conveyed, double paper with two paper being separated and conveyed at the same time, and a plurality of unqualified paper with more than two paper being separated and conveyed at the same time is detected and controlled. The paper feeder is generally composed of a paper separating device, a paper conveying device, a paper feeding table, a paper detection 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 host of the equipment; the paper feeding table is responsible for carrying the automatic rising of the paper stack, so that the distance between the paper on the top layer of the paper stack and the paper separating device is maintained in an optimal range, a stop signal is sent when the paper detecting device detects empty sheets, double sheets or multiple sheets which are sent by the paper feeding mechanism in a false mode, and the control system controls the paper feeding mechanism to stop paper conveying so as to avoid damage to a host machine and occurrence of waste products.
The paper feeding mechanism is used for continuously separating and conveying paper on the paper stack in the running process, along with the gradual reduction of the number of the paper sheets of the paper stack, the height of the paper stack gradually reduces, the distance H between the paper sheets on the top layer of the paper stack and a paper separating nozzle on a paper separating device (the optimal range is usually 25-35 mm), and the distance H between the paper sheets on the top layer of the paper stack and the highest point of a turning plate (the optimal range is usually 6-10 mm) gradually increases, so that the paper feeding table is required to gradually lift the paper sheets of the paper stack to ensure that H and H are in the optimal range until the paper sheets of the paper stack are all separated and conveyed, if H and H are larger than the optimal range, the paper sheets are 'empty', and if H and H are smaller than the optimal range, the paper sheets are 'double-sheet'.
In order to solve the problem that a paper feeding mechanism erroneously feeds empty sheets, double sheets or multiple sheets, a lifting signal of a paper feeding table in the prior art is sent by a detection device for controlling h and is transmitted to a paper feeding table lifting motor, and when h is more than 35mm, the paper feeding table lifting motor drives the paper feeding table and a paper stack to lift. When the warping and bending of the paper stack are not large, the paper feeder can stably and reliably run, once the warping and bending of the paper stack exceeds a certain limit, H and H cannot be simultaneously satisfied in an optimal range, so that unqualified paper such as empty paper, double paper and multiple paper can appear, at the moment, a paper detection device and a control system can send out a shutdown signal, in application practice, the two values of H and H are simultaneously adjusted to be optimal only by lifting the paper stack of the paper feeding table, and the H is often adjusted to be in an optimal range, and the H possibly exceeds the optimal range, so that the two are not good and easy to consider each other. In order to ensure the normal operation of the equipment, the problems of bending and warping of paper sheets in a paper stack need to be solved, two measures are adopted at present, firstly, a machine operator adjusts the paper stack with the bending and warping exceeding a certain limit, the common practice is to perform 'wedge inserting' treatment with different forces on different positions of the paper stack with serious bending and warping in advance according to experience, and the solution is completely judged according to the experience of the operator and the degree and position of wedge inserting are mastered, so that the paper stack is extremely easy to fail due to improper pinching. Secondly, operators observe the bending and warping degree of the paper at the upper end of the paper stack in real time, and the height of the paper separating device is adjusted in time. The device is a supplement to the failure of the wedge inserting measure, and once operators are out of sight or fail to timely adjust the height of the paper separating device according to the warping and bending degree of the paper stack, empty sheets, double sheets, multiple sheets and other unqualified paper sheets can possibly appear, so that equipment is stopped.
Therefore, the prior art has the defects that operators are required to have higher professional skill quality and rich working experience, the operation difficulty of equipment is high, the labor intensity of the operators is increased, the downtime of the equipment is increased, the operation rate of a 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 of the paper stack on the paper feeder, enabling the paper feeder to automatically and reliably separate and stably convey the paper stack with the bending and warping of the paper 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:
The paper feeding mechanism of the 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 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 rocking rod connected with the paper conveying turning plate connecting rod, the other end of the paper conveying turning plate rocking rod is coaxially arranged on a paper conveying turning plate shaft, the paper conveying point wheel control mechanism comprises a paper conveying point wheel swing frame arranged on the paper conveying point wheel swing frame shaft, a point wheel swing frame tension spring connected to the paper conveying point wheel swing frame, a paper conveying point wheel cam contacted with a point cam follower on the paper conveying point wheel swing frame, a paper conveying point wheel connecting rod connected with the paper conveying point wheel swing frame, a paper conveying point connecting rod connected with the paper conveying point wheel rocking rod arranged on the paper conveying point wheel, a paper conveying point rocking rod arranged on the paper conveying point rocking rod, and a paper conveying point rocking rod arranged on the paper conveying point supporting plate, and a paper conveying channel arranged on the paper conveying point rocking rod coaxially;
The paper feeding table is arranged at the paper feeding station;
The paper separating device is characterized by comprising an upper fixing plate, an elevating motor, sliding bearings, a guide shaft, a mounting substrate, a screw rod nut, a screw rod, a shaft coupling and an h proximity sensor, wherein the upper fixing plate is fixed on a frame, the elevating 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 shaft is arranged in the sliding bearings, the lower end of the guide shaft is 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 shaft coupling, 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 paper foot;
The paper stack height real-time detection and adjustment device comprises a detection finger propulsion mechanism, a detection finger lifting mechanism, a detection finger and an H proximity sensor which are arranged below a paper conveying supporting plate, wherein the detection finger propulsion mechanism comprises a propulsion swing frame, a propulsion swing frame shaft, a propulsion swing frame tension spring, a propulsion cam follower and a propulsion cam; the detection finger lifting mechanism comprises a lifting swing frame, a lifting swing frame shaft, a lifting swing frame tension spring, a lifting cam follower, a lifting cam and a lifting connecting rod, wherein the lifting swing frame is arranged on the lifting swing frame shaft, the lifting swing frame tension spring is connected to the lifting swing frame, the lifting cam follower is coaxially arranged at the lower end of the lifting swing frame, the lifting cam is contacted with the lifting cam follower, the upper end shaft of the lifting swing frame is connected with the lower end of the lifting connecting rod, the upper end shaft of the lifting connecting rod is connected with the middle part of the detection finger, and the H proximity sensor is arranged above the lifting swing frame and is close to a detection point of the lifting swing frame.
The height adjusting mechanism of the paper separating device is used for controlling the lifting or lowering of the paper separating device according to the distance h between the top paper of the paper stack and the paper separating suction nozzle, which is detected by the h proximity sensor; and controlling the paper feeding table to bear the paper stack to ascend according to the distance H between the top paper of the paper stack and the highest point of the turning plate detected by the H proximity sensor so as to ensure that the H is in an optimal range.
The detection finger is a contact type detection body with a certain width and curvature, and the front end (finger end) is thinner and thicker gradually after the detection finger is used for carrying out real-time 'touch' on the height of the top paper of the paper stack.
The detection finger propulsion mechanism and the detection finger lifting mechanism respectively control the detection finger to do periodic motion synthesized by horizontal motion, vertical motion and swing, and synchronize with the motion of the paper separating device, so that the detection finger is controlled to do 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 QL-05N series inductive proximity switches, and the eddy current generated when the conductors approach acts inside to change circuit parameters, so that whether the conductors approach or not is identified, and the corresponding mechanism action is controlled.
The paper feeding method of paper feeding mechanism of paper feeder includes the steps of paper separation, paper conveying, height regulation of paper separating device and real-time detection and regulation of paper stack height, and includes the following steps:
a separation of paper: the paper separating suction nozzle moves downwards, the uppermost paper is sucked and then the paper treading foot is inserted, the lower paper is pressed and air blowing is started, the sucked paper is separated from the lower paper, then the paper transferring suction nozzle moves rightwards and simultaneously sucks the paper with the paper separating suction nozzle, the paper separating suction nozzle breaks off air and releases the paper, the paper treading foot stops blowing off the paper stack, and the paper transferring suction nozzle moves leftwards to transfer the paper to the paper feeding roller;
b, conveying paper: when the paper separating suction nozzle and the paper transferring suction nozzle suck the paper, the paper is controlled to leave the paper stack through periodical swing and kept at the correct position when the paper leaves the paper stack, the paper transferring suction nozzle cuts off air and returns the paper after delivering the paper to the paper delivering roller, the paper delivering roller and the paper delivering point wheel deliver the paper to the paper delivering channel, and the paper is continuously delivered through the flat belt and the paper delivering pinch roller;
c, height adjustment of the paper separating device: when the h proximity sensor detects that h is smaller than or larger than the optimal range, the control system controls the lifting motor to enable the screw rod to rotate forwards or reversely, and drives the paper separation device to move vertically, so that h is kept in the optimal range;
d, detecting and adjusting the height of the paper stack in real time: when paper is separated, the detection finger pushing mechanism and the detection finger lifting mechanism respectively control the detection finger to perform real-time touch on paper on the top layer of the paper stack, the motion angle of the lifting swing frame is changed by the detection finger touch, the H proximity sensor can detect the change of the height of the paper stack in real time by detecting the motion change of the lifting swing frame, the height of the paper stack gradually decreases along with the change of the height of the paper stack, and when the distance H between the paper on the top layer of the paper stack and the highest point of the paper conveying turning plate is lower than an optimal range, the control system controls the paper feeding table to bear the lifting of the paper stack so as to ensure that H is in the optimal range.
In summary, 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 technology, and provide effective guarantee for the efficient and reliable separation and paper conveying of the paper feeder. The main difference between the invention and the background technology is that in the background technology, the signal source sent by the detection device for detecting H in the paper separating device controls the paper feeding table to adjust the height of the paper stack, and simultaneously, the optimal range of H is influenced, H is maintained in the optimal range, but H possibly exceeds the optimal range; the invention is characterized in that the paper stack height real-time detection and adjustment mechanism is independently arranged, and the paper stack height real-time detection and adjustment mechanism is specially used for controlling the optimal range of the paper feeding table to adjust H, wherein the optimal range of the H is ensured by the paper separation device height adjustment mechanism which is simultaneously and independently arranged, so that the invention has the following beneficial effects:
1. The device can automatically and reliably separate and stably convey the paper stack with the 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 diagram of the present invention.
In the figure: feed table 1, feed head body 2, feed nozzle 3, delivery nozzle 4, foot 5, feed flap 6, feed roller 7, feed roller 8, feed tray 9, feed pinch roller 10, feed flap rocker shaft 11, feed flap rocker 12, flap rocker tension spring 13, flap cam follower 14, feed flap cam 15, feed flap link 16, feed flap rocker 17, feed flap shaft 18, feed roller rocker shaft 19, feed roller rocker 20, roller rocker tension spring 21, roller cam follower 22, feed roller cam 23, feed roller link 24, feed roller rocker 25, upper plate 26, lift motor 27, slide bearing 28, guide shaft 29, mounting substrate 30, screw nut, screw 32, shaft coupling 33, H proximity sensor 34, detection finger 35, H proximity sensor 36, push rocker 37, push rocker shaft 38, push rocker 39, push cam follower 40, push cam follower 41, push cam follower 43, push cam follower 42, rocker shaft 43, rocker arm 46, rocker arm 42, rocker arm 46, rocker arm 43, rocker arm 46, lift cam member 43, rocker arm 42, rocker arm 46, lift rocker arm 42, lift rocker arm 42, rocker arm 46, and lift rocker arm 38
Detailed Description
The following detailed description refers to the accompanying drawings by way of example:
The paper feeding mechanism of the 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, a paper delivering suction nozzle 4 and a paper treading foot 5 which are arranged on the paper feeding head body 2, the paper separating suction nozzle 3 and the paper delivering suction nozzle 4 are respectively connected with a suction pipeline, and the paper treading foot 5 is simultaneously provided with a paper separating blowing nozzle connected with a 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 turning frame 12 arranged on a paper conveying turning plate turning frame shaft 11, a turning plate turning frame tension spring 13 connected to the paper conveying turning plate turning frame 12, a paper conveying turning plate cam 15 contacted with a turning plate cam follower 14 on the paper conveying turning plate turning frame 12, a paper conveying turning plate connecting rod 16 connected with the paper conveying turning plate turning frame 12, a paper conveying turning plate rocking rod 17 connected with the paper conveying turning plate connecting rod 16, the other end of the paper conveying turning plate rocking rod 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 point wheel turning frame 20 arranged on the paper conveying point wheel turning plate turning frame shaft 19, a point wheel turning plate tension spring 21 connected to the paper conveying turning plate turning frame 12, a point wheel connecting rod 22 connected to the paper conveying point wheel turning plate turning frame 20, a paper conveying point wheel connecting rod 25 connected to the paper conveying point wheel 7 and a paper conveying point wheel connecting rod 9 arranged on the paper conveying point connecting rod 9 coaxially, a paper conveying point connecting rod 25 arranged on the paper conveying wheel connecting rod 9, and a paper conveying point connecting rod 25;
The paper separating device height adjusting mechanism is characterized by comprising an upper fixing plate 26, a lifting motor 27, sliding bearings 28, a guide shaft 29, a mounting substrate 30, a screw 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 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 bearings 28, the lower end of the guide shaft 29 is fixed at two ends of the mounting substrate 30, the screw nut 31 is fixed in the middle of the mounting substrate 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 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 a detection point of a paper foot 5;
The paper stack height real-time detection and adjustment device comprises a detection finger propulsion 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 propulsion mechanism comprises a propulsion rocker 37, a propulsion rocker shaft 38, a propulsion rocker tension spring 39, a propulsion cam follower 40 and a propulsion cam 41, the propulsion rocker 37 is arranged on the propulsion rocker shaft 38, one end of the lower part of the propulsion rocker 37 is connected with the propulsion rocker tension spring 39, the other end of the lower part of the propulsion rocker 37 is coaxially provided with the propulsion cam follower 40, the propulsion cam 41 is in contact with the propulsion cam follower 40, and the rear end of the detection finger 35 is in shaft connection with the top end of the propulsion rocker 37; the detecting finger lifting mechanism comprises a lifting rocker 42, a lifting rocker shaft 43, a lifting rocker tension spring 44, a lifting cam follower 45, a lifting cam 46 and a lifting connecting rod 47, wherein the lifting rocker 42 is arranged on the lifting rocker shaft 43, the lifting rocker tension spring 44 is connected to the lifting rocker 42, the lifting cam follower 45 is coaxially arranged at the lower end of the lifting rocker 42, the lifting cam 46 is contacted with the lifting cam follower 45, the upper end of the lifting rocker 42 is connected with the lower end of the lifting connecting rod 47 in a shaft mode, the upper end of the lifting connecting rod 47 is connected with the middle part of the detecting finger 35 in a shaft mode, and the H proximity sensor 36 is arranged above the lifting rocker 42 and is close to a detecting point of the lifting rocker 42;
The detecting finger 35 is a contact type detecting body with a certain width and curvature, and the front end (finger end) is thinner and thicker gradually to be used for carrying out real-time 'touch' on the height of the top sheet of the sheet stack 48.
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 adjustment of the height of a paper stack, and in particular relates to a paper feeder of single paper printing equipment and post-printing packaging equipment, and comprises the following steps of:
a separation of paper: methods for separating paper are well known in the art, namely: firstly, the paper separating suction nozzle 3 moves downwards to suck the uppermost piece of paper, then lifts and warps backwards to prevent double paper from being sucked, the paper treading foot 5 is beneficial to inserting, after the paper treading foot 5 is inserted, the lower paper is pressed, the blowing air passage is opened for blowing, the sucked paper is separated from the lower paper, then the paper delivering suction nozzle 4 moves rightwards to suck the paper, the paper is simultaneously controlled by the paper separating suction nozzle 3, the paper separating suction nozzle 3 cuts off the air passage for discharging the paper, the paper is delivered to the paper delivering suction nozzle 4 and then ascends, at the moment, the paper treading foot 5 stops blowing to leave the paper stack 48, and the paper delivering suction nozzle 4 moves leftwards to the paper delivering roller 7;
b, conveying paper: methods of transporting paper are well known in the art, namely: the paper feeding turning plate 6 periodically swings through a control mechanism thereof, so that when the paper separation suction nozzle 3 and the paper delivery suction nozzle 4 suck up paper, the paper is controlled to leave the paper stack 48 and keep the correct position when the paper leaves the paper stack 48, the paper delivery suction nozzle 4 sends the paper to the paper feeding roller 7 and then cuts off air to return, the paper feeding roller 7 and the paper feeding point wheel 8 send the paper to a paper feeding channel, and the paper is continuously sent out through the flat belt and the paper feeding 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 the paper is separated, the h proximity sensor 34 detects the angle change of the stepping foot 5 caused by the contact with the height of the paper stack 48 in real time, so as to judge the distance h between the top paper of the paper stack 48 and the paper separating suction nozzle 3, when the h proximity sensor 34 detects that h is smaller than the optimal range, the paper stack is usually bent seriously, or when h is larger than the optimal range, the paper stack is usually bent seriously, the control system controls the lifting motor 27 according to the detection signal to enable the screw rod 32 to rotate forwards or reversely, and drives the paper separating device to move vertically under the cooperation of the guide shaft 29 and the sliding bearing 28, so that the real-time adjustment of the height of the paper separating device is realized, and the 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: while separating the paper, the detecting finger 35 respectively completes the periodic motions of the horizontal motion, the vertical motion and the swing through the detecting finger pushing mechanism and the detecting finger lifting mechanism, so that the paper on the top layer of the paper stack 48 is touched in real time, the detecting finger 35 is synchronous with the motion of the paper separating device, the change of the height of the paper stack 48 can enable the 'touch' angle of the detecting finger 35 to change correspondingly, so that the motion angle (track) of the lifting swing frame 42 changes, different paper stack heights which are touched correspond to the 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 in real time through detecting the change of the motion of the lifting swing frame 42, the height of the paper stack 48 gradually decreases along with the continuous operation of the equipment, and when the distance H between the paper on the top layer 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 to be lifted according to the detection signal so as to ensure that the paper stack 48 is lifted by the control of the paper feeding table 1 in the optimal range.
Claims (3)
1. The utility model provides a paper feeding mechanism of paper feeder, including paper feeding platform (1), paper separator, paper conveyor, paper separator height adjustment mechanism, paper buttress height real-time detection adjusting device, paper feeding platform (1) sets up in the paper feeding station, paper separator is including setting up paper feeding head body (2) in paper feeding platform (1) top, set up paper separating suction nozzle (3) on paper feeding head body (2), delivery suction nozzle (4), step on paper foot (5), paper separating suction nozzle (3) and delivery suction nozzle (4) are connected respectively the pipeline of breathing in, step on and be provided with the paper separating blow nozzle of being connected with the pipeline of blowing simultaneously on paper foot (5);
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) and a paper conveying point wheel control mechanism, a paper conveying supporting plate (9), a flat belt and a paper conveying pinch roller (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 rocking rod (17) connected with the paper conveying turning plate connecting rod (16), the other end of the paper conveying turning plate rocking rod (17) and the paper conveying turning plate (6) are coaxially arranged on a paper conveying swing frame shaft (18), the paper conveying point wheel control mechanism comprises a paper conveying point wheel swing frame (20) arranged on the paper conveying turning plate swing frame (19), a paper conveying point wheel connecting rod (20) connected with the paper conveying point rocking rod (20), a paper conveying point rocking rod (20) connected with the paper conveying point rocking rod (20), and a paper conveying point rocking rod (20) connected with the paper conveying point rocking rod (20) at the paper conveying point rocking rod (20) The other end of the paper conveying point wheel rocker (25) is 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);
The paper separating device is characterized by comprising an upper fixing plate (26), a lifting motor (27), a sliding bearing (28), a guide shaft (29), a mounting substrate (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 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 two ends of the mounting substrate (30), the screw rod nut (31) is fixed in the middle of the mounting substrate (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 substrate (30) is fixed on a 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 a paper treading detection point (5);
The paper stack height real-time detection and adjustment device comprises a detection finger propulsion 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 propulsion mechanism comprises a propulsion swing frame (37), a propulsion swing frame shaft (38), a propulsion swing frame tension spring (39), a propulsion cam follower (40) and a propulsion cam (41), the propulsion swing frame (37) is arranged on the propulsion swing frame shaft (38), one end of the lower part of the propulsion swing frame (37) is connected with the propulsion swing frame tension spring (39), the other end of the lower part of the propulsion swing frame (37) is coaxially provided with the propulsion cam follower (40), the propulsion cam (41) is in contact with the propulsion cam follower (40), and the rear end of the detection finger (35) is connected with the top end of the propulsion swing frame (37); the detection finger lifting mechanism comprises a lifting rocker (42), a lifting rocker shaft (43), a lifting rocker tension spring (44), a lifting cam follower (45), a lifting cam (46) and a lifting connecting rod (47), wherein the lifting rocker (42) is arranged on the lifting rocker shaft (43), the lifting rocker tension spring (44) is connected to the lifting rocker (42), the lifting cam follower (45) is coaxially arranged at the lower end of the lifting rocker (42), the lifting cam (46) is contacted with the lifting cam follower (45), the upper end of the lifting rocker (42) is connected with the lower end of the lifting connecting rod (47), the upper end of the lifting connecting rod (47) is connected with the middle part of the detection finger (35), and an H proximity sensor (36) is arranged above the lifting rocker (42) and is close to a detection point of the lifting rocker (42).
2. A paper feeding mechanism for a paper feeder according to claim 1, wherein the detecting finger (35) is a contact detecting body having a certain width and curvature, and the finger end at the front end is thinner and thicker gradually.
3. The invention relates to a paper feeding method of a paper feeding mechanism of a paper feeding machine, which comprises the steps of paper separation, paper conveying, height adjustment of a paper separation device and real-time detection adjustment of paper stack height, wherein the paper feeding machine particularly refers to a paper feeding machine of single paper printing equipment and post-printing packaging equipment, and comprises the following steps of:
a separation of paper: methods for separating paper are well known in the art, namely: firstly, a paper separating suction nozzle (3) moves downwards, after sucking the uppermost piece of paper, the paper separating suction nozzle lifts up and warps backwards to prevent double paper from being sucked, and is beneficial to inserting a paper stepping foot (5), after inserting the paper stepping foot (5), pressing lower paper and opening a blowing air passage for blowing air, so that the sucked paper is separated from the lower paper, then a paper transferring suction nozzle (4) moves rightwards to suck the paper, the paper separating suction nozzle (3) simultaneously controls the paper, the paper separating suction nozzle (3) cuts off the air passage for releasing paper, the paper is transferred to the paper transferring suction nozzle (4) and then rises, at the moment, the paper stepping foot (5) stops blowing air to leave a paper pile (48), and the paper transferring suction nozzle (4) moves leftwards to transfer the paper to a paper feeding roller (7);
b, conveying paper: methods of transporting paper are well known in the art, namely: the paper feeding turning plate (6) periodically swings through a control mechanism, so that when the paper separation suction nozzle (3) and the paper delivery suction nozzle (4) suck up paper, the paper is controlled to leave the paper stack (48) and keep the correct position when the paper leaves the paper stack (48), the paper delivery suction nozzle (4) cuts off air and returns the paper after delivering the paper to the paper feeding roller (7), the paper feeding roller (7) and the paper feeding point wheel (8) deliver the paper to a paper feeding channel, and the paper is continuously delivered through the flat belt and the paper feeding 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 separation is carried out, an h proximity sensor (34) can detect the angle change of a stepping foot (5) caused by the fact that the stepping foot contacts with the height of a paper stack (48) in real time, so that the distance h between the paper on the top layer of the paper stack (48) and a paper separation suction nozzle (3) is judged, when the h proximity sensor (34) detects that h is smaller than an optimal range, the paper of the paper stack is bent seriously at the moment, or when the h is larger than the optimal range, the paper stack is bent seriously at the moment, a control system can control a lifting motor (27) to enable a screw rod (32) to rotate forwards or reversely according to a detection signal, and the paper separation device is driven to move vertically under the cooperation of a guide shaft (29) and a sliding bearing (28), so that the real-time adjustment of the height of the paper separation device is realized, and the 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): the paper separation is carried out, the detection finger (35) respectively completes the periodic motions of horizontal motion, vertical motion and swing synthesis through the detection finger pushing mechanism and the detection finger lifting mechanism, so that the paper on the top layer 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 separation device, the touch angle of the detection finger (35) can be correspondingly changed due to the change of the height of the paper stack (48), the motion angle of the lifting swing frame (42) is changed, different paper stack heights which are touched correspond to the 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) in real time through detecting the motion change of the lifting swing frame (42), the height of the paper stack (48) is gradually reduced along with the continuous operation of the equipment, and when the distance H between the top layer 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 feeding platform (1) to bear the paper stack (48) according to the detection signal so as to be in the optimal range.
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| CN114590519B (en) * | 2022-04-26 | 2023-12-01 | 江门市合盈彩印包装有限公司 | Auxiliary transfer tool for paper stacks of printing workshops |
| CN115230236B (en) * | 2022-07-26 | 2024-05-28 | 深圳市旺盈彩盒纸品有限公司 | Color box printing device with anti-blocking box function |
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