A kind of printing machine automatic document feeder
It the utility model is related to printer field, more particularly to a kind of printing machine automatic document feeder.
The automatic document feeder of existing printing machine carries out changing paper after paper is finished, it is necessary to shut down, which needs to spend
Take longer time, be unfavorable for the printing efficiency of printing machine.
The content of the invention
In order to solve deficiency of the prior art, the purpose of this utility model is to provide a kind of paper feeding efficiently, automation
The high printing machine automatic document feeder of degree.
To achieve the above object, the utility model uses following technical scheme：
A kind of printing machine automatic document feeder, it includes paper advance mechanism and the wheel converting mechanism below paper advance mechanism, institute
Stating paper advance mechanism includes two feed rollers for being arranged at intervals and rotating synchronously, and paper adhesive board, paper adhesive board are equipped between two feed rollers
Bottom surface higher than feed roller minimum point set, the paper adhesive board is hollow structure, and the bottom of paper adhesive board is evenly equipped with sucker, paper adhesive board
Top be connected with evacuator；The slide that the wheel converting mechanism includes displacement guide rail and is slidably connected on displacement guide rail is sliding
Seat is driven by laying drive and is slided on displacement guide rail；The direction slid along on the slide is interval with more than two
Paper supply station, is respectively equipped with crane on each paper supply station, is vertically equipped with riser guide on crane, on riser guide
Lifting seat is slidably connected, lifting seat is driven by lift actuator and slided on riser guide, is had on the lifting seat and is used for
The paper carrying table of pile is placed, lifting seat drives pile to move up and abut against feed roller.
The paper advance mechanism output terminal side is equipped with two spaced guide rollers, is formed and is used between two guide rollers
Transmit the gap of paper.
The laying drive and lift actuator are the feed screw nut pair driven by servomotor.
The utility model uses above structure, has the following advantages：
1st, under the action of the suction of paper adhesive board, the paper of the superiors is separated with the paper under it, avoids plurality of sheets of paper at the same time
It is admitted in printing machine, effectively improves printing quality.
2nd, wheel converting mechanism can realize rotation paper supply, and the interval time for changing paper is substantially reduced, so that effective guarantee prints
Brief description of the drawings
The utility model is described in further details below in conjunction with the drawings and specific embodiments；
Fig. 1 is the front view of the utility model；
Fig. 2 is the top view of the utility model.
As shown in Figure 1 or 2, the utility model includes paper advance mechanism 1 and the wheel converting mechanism 2 arranged on the lower section of paper advance mechanism 1,
The paper advance mechanism 1 includes two feed rollers 11 for being arranged at intervals and rotating synchronously, and paper adhesive board is equipped between two feed rollers 11
12, the bottom surface of paper adhesive board 12 is set higher than 11 minimum point of feed roller, and the paper adhesive board 12 is hollow structure, the bottom of paper adhesive board 12
Sucker is evenly equipped with, the top of paper adhesive board 12 is connected with evacuator；The wheel converting mechanism 2 includes displacement guide rail 21 and is slidably connected
Slide 22 on displacement guide rail 21, slide 22 are driven by laying drive and are slided on displacement guide rail 21；On the slide 22
The direction slid along is interval with more than two paper supply stations, and crane 23, crane are respectively equipped with each paper supply station
Riser guide 24 is vertically equipped with 23, lifting seat 25 is slidably connected on riser guide 24, lifting seat 25 is driven by lifting
Dynamic device drives to be slided on riser guide 24, has the paper carrying table for being used for placing pile, 25 band of lifting seat on the lifting seat 25
Dynamic pile moves up and abuts against feed roller 11.
1 output terminal side of paper advance mechanism is equipped with two spaced guide rollers 3, is formed and is used between two guide rollers 3
Transmit the gap of paper.
Laying drive and lift actuator are the feed screw nut pair driven by servomotor, and feed screw nut's auxiliary driving is smart
Really, the precision of position can be ensured.
The operation principle of the utility model：Lifting seat 25 drives the paper of the pile the superiors thereon to abut against feed roller all the time
11（Monitor the position of the superiors' paper by setting paper level sensor and the letter of lifting lifting seat is sent by electrical control mechanism
Number so that the paper of the pile the superiors abuts against feed roller 11 all the time）, the rotation of feed roller 11 is so as to send paper into printing machine
In, and paper adhesive board 12 is always positioned at the top of top sheet, paper adhesive board 12 produces upwards paper under the action of vacuumizing
Suction so that the paper of the superiors is separated with the paper under it, avoids plurality of sheets of paper from being admitted at the same time in printing machine, effectively improves print
In addition, after the paper on wheel converting mechanism 2 on one of paper supply station is finished, laying drive driving slide 22
It is mobile so that the lifting seat 25 on other paper supply stations is in the underface of paper advance mechanism 1, while in the confession for using light paper before
Paper is supplemented on paper station, that is, realizes rotation paper supply, the interval time for changing paper is substantially reduced, so that effective guarantee printing effect