CN203557435U

CN203557435U - Intermittent mechanism for automatic die-cutting machine

Info

Publication number: CN203557435U
Application number: CN201320642776.4U
Authority: CN
Inventors: 丁惠耀; 薛毅华
Original assignee: SHANGHAI YAWA PRINTING MACHINERY CO Ltd
Current assignee: SHANGHAI YAWA PRINTING MACHINERY CO Ltd
Priority date: 2013-10-17
Filing date: 2013-10-17
Publication date: 2014-04-23
Anticipated expiration: 2023-10-17

Abstract

The utility model discloses an intermittent mechanism for an automatic die-cutting machine, which comprises a main worm shaft used for driving a movable bed of the die-cutting machine, a main chain wheel used for driving a paper feeding chain, an encoder, a servomotor, a servo driver and a programmable controller, wherein the encoder is mounted on the main worm shaft; the output shaft of the servomotor is connected onto the main chain wheel; the servo driver and the servomotor are in electric connection; the input end and the output end of the programmable controller are electrically connected with the encoder and the servo driver in a one-to-one correspondence manner; the electrical signals of the encoder are collected by the programmable controller; the electronic cam curve can be generated by calculation; the servo driver drives the servomotor to rotate according to a regularity of the electronic cam curve, so as to drive the main chain wheel to rotate intermittently. The intermittent mechanism has the characteristics of good motion characteristic, stability in the starting and stopping operation, accurate transmission and high degree of automation. so the maximum velocity of equipment is improved.

Description

A kind of indexing mechanism for automatic die cutter

Technical field

The utility model relates to a kind of indexing mechanism for automatic die cutter.

Background technology

In business and packages printing post-press finishing technical process, cross cutting impression is the operation that the frequency of occurrences is the highest, and die-cutting machine is absolutely necessary in a large amount of workshops that produce the printed matters such as carton, carton, trade mark, card, page, envelope.It is protruding that cross cutting function is carried out impression, tangent line, indentation to the cardboard of all size, through the cardboard of impression or tangent line, by removing after rim charge along tangent line, along the impression extruding, can be folded into carton, carton or make embossing plate trade mark.

The chief component of die-cutting machine as shown in Figure 1, comprises paper feed unit 1, front lay and side mark portion 2, opening and closing portion 3, front by rule portion 4, cross cutting indentation unit 5, afterwards by rule portion 6, stripping portion 7, paper collection part 8 and the defeated paper chain 9 of batch (-type).Main technique is location-mold pressing-thermoprint-stripping.Its course of work and principle are as follows: tooth isostere is fixed on defeated paper chain 9 and by sprocket wheel and drives and advance, when moving to the terminal position of defeated paper portion 1, tooth isostere stops, by front, by rule portion 4, tooth isostere is positioned, paper by the accurate interlock of tooth isostere after, tooth isostere moves under the drive of defeated paper chain 9, after moving to, by rule portion 6 places, stop, again by rear by rule portion 6 to tooth registration, afterwards, the movable bed 51 of cross cutting indentation unit 5 moves upward, with fixing bed 52, paper pressing is carried out to cross cutting, and now the second rooted tooth isostere be in the end of defeated paper portion 1 near position hold paper in the month.After cross cutting completes, the first rooted tooth isostere, under the drive of defeated paper chain 9, moves forward to stripping portion 7 and paper collection part 8, so circulation.In the whole course of work, resting of tooth isostere all driven by indexing mechanism with moving, and movable bed 51 to move up and down be that main shaft by die-cutting machine drives by bent axle and plane six-bar linkage.

Indexing mechanism is the important mechanism of die-cutting machine, and its main task is to control paper feed mechanism guiding paper to carry out one-time positioning, secondary location, cross cutting, stripping, collection, completes the incrustation processing of printing.Indexing mechanism on traditional die-cutting machine is mounted in driving face 10 sides of die-cutting machine, and as shown in Figure 2, intermittently paper feed mechanism comprises bent axle 11, main pulley 12, driven pulley 13, intermittent box 14 and main chain wheel 15.Bent axle 11 is for driving movable bed to move up and down, main pulley 12 is connected on bent axle 11 by key, driven pulley 13 passes through synchronous cog belt input power by main pulley 12, driven pulley 13 is connected to by key on the power shaft of intermittent box 14, by the parallel graduated cam in intermittent box 14 and gear drive, transmit power on output shaft, main chain wheel 15 is fixedly connected with the output shaft of intermittent box 14, realize like this intermittent movement of main chain wheel 15, thereby driven the defeated paper chain 9 being engaged on main chain wheel 15 to do intermittent movement.

Above-mentioned indexing mechanism is owing to having adopted parallel indexing cam mechanism to realize intermittent movement, its transmission efficiency when transmission is lower, the power and the velocity interval that adapt to are less, even and if adopted the parallel indexing cam mechanism of three cam nine rollers, its instantaneous transmission ratio in transmission process jumps larger, itself move just not steady, be transitioned on defeated paper chain 9, add and start rapidly and stop to cause the shake of tooth isostere, cause the maximum speed of die-cutting machine generally at seven thousand sheets per hour, and precision is also affected, be not suitable with the requirement that present maximum speed reaches nearly ten thousand per hour.In addition, the installation accuracy of intermittent box is had relatively high expectations, and needs Special Equipment manufacture, and therefore the manufacturing cost of die-cutting machine is higher.

Summary of the invention

The purpose of this utility model is to overcome the defect of prior art, a kind of indexing mechanism for automatic die cutter is provided, and it is good that it has kinetic characteristic, starts and stop steadily, the feature that transmission is accurate and automaticity is high, can guarantee that the maximum speed of die-cutting machine is improved.

The purpose of this utility model is achieved in that a kind of indexing mechanism for automatic die cutter, comprise the main worm shaft of the movable bed for driving described die-cutting machine and for driving the head sprocket of defeated paper chain, also comprise encoder, servomotor, servo-driver and programmable controller; Wherein, described encoder is arranged on described main worm shaft; The output shaft of described servomotor is connected on described head sprocket; Described servo-driver is electrically connected with described servomotor; The input of described programmable controller and output are electrically connected with described encoder and servo-driver correspondingly, and this programmable controller gathers the signal of telecommunication of described encoder, through calculating, generate electronic cam curve; Described in described servo driver drives, servomotor, with the rule running of electronic cam curve, makes described head sprocket carry out intermittent rotary.

The above-mentioned indexing mechanism for automatic die cutter, wherein, described encoder is arranged on described main worm shaft by shaft coupling.

The above-mentioned indexing mechanism for automatic die cutter, wherein, the output shaft of described servomotor is connected on described head sprocket by reduction box.

The technical scheme of the indexing mechanism for automatic die cutter of the present utility model, adopt encoder and servomotor mechanism, the position of the main shaft of the die-cutting machine of measuring by encoder, the electronic cam curve being generated by Computing goes to control the motion of servomotor, by servomotor, directly drive head sprocket again, transmission efficiency is improved greatly, the mechanical shock that not only can avoid parallel indexing cam mechanism to produce when high-speed cruising, can also reduce largely the systematic error that machinery assembling produces, and can directly realize intermittent movement speed and the acceleration of head sprocket are revised by computer, convenient adjusting, to keep exact state.Indexing mechanism for automatic die cutter of the present utility model has simple for structure, and kinetic characteristic is good, starts and stops steadily, and the feature that transmission is accurate and automaticity is high, can guarantee that the maximum speed of die-cutting machine is improved.

Accompanying drawing explanation

Fig. 1 is the structural representation that Horizontal flat flattens automatic die cutter;

Fig. 2 is the structural representation of the indexing mechanism for automatic die cutter of prior art;

Fig. 3 is the theory diagram of the indexing mechanism for automatic die cutter of the present utility model;

Fig. 4 is the encoder of the indexing mechanism for automatic die cutter of the present utility model and the installation site schematic diagram of servomotor;

Fig. 5 is the enlarged drawing at P position in Fig. 4.

The specific embodiment

In order to understand the technical solution of the utility model better, below by specific embodiment, be also described in detail by reference to the accompanying drawings.

Refer to Fig. 3 to Fig. 5, indexing mechanism for automatic die cutter of the present utility model, comprise main worm shaft 23, head sprocket 15, encoder 21, servomotor 24, servo-driver 26 and programmable controller 27, wherein, main worm shaft 23 is positioned at the below of movable bed 20, for driving moving up and down of movable bed 20; Head sprocket 15 is for driving defeated paper chain; Encoder 21 is arranged on main worm shaft 23 by shaft coupling 22, can convert the mechanical quantity such as the angular displacement of main worm shaft 23, angular speed to corresponding electric pulse with digital output, thereby determines the position of movable bed; Servomotor 24 is also mounted in the outside of the driving face wallboard 10 of die-cutting machine, and is connected with head sprocket 15 by reductor 25, and servomotor 24 is the driving power of head sprocket 15; Servo-driver 26 is electrically connected with servomotor 24 by holding wire, by position, speed and three kinds of modes of moment, servomotor 24 is controlled, and realizes high-precision transmission system location; The input of programmable controller 27 and output are electrically connected with encoder 21 and servo-driver 26 by holding wire correspondingly, this programmable controller 27 is through the signal of telecommunication of data wire capturing and coding device 21 and calculate servo-driver 27 and drive the required parameter of servomotor 24, be used for generating electronic cam curve, make servo-driver 27 drive the rule running of servomotor 24 with electronic cam curve, and the head sprocket 15 that makes to be connected on servomotor 24 is realized intermittent rotary.

Indexing mechanism for automatic die cutter of the present utility model, make the defeated paper chain engaging with head sprocket realize intermittent movement, and the run location up and down of the movement rhythm of defeated paper chain and the movable bed 20 of die-cutting portion is coordinated mutually, realize synchronous between defeated paper and main transmission, thereby can improve mould-cutting precision.

Indexing mechanism for automatic die cutter of the present utility model, reliable operation, automaticity is high, the mechanical shock that can avoid mechanical cam to produce when high-speed cruising, kinetic characteristic is good, starts and stops steadily, the maximum speed that can guarantee die-cutting machine is improved, and speed and the acceleration that can directly realize head sprocket intermittent movement by computer are revised, the convenient run duration of defeated paper chain and the ratio of quiescent time of regulating, applied widely.Because servomotor directly drives head sprocket, transmission efficiency is improved greatly, and can reduce significantly the systematic error that machinery assembling produces.

Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that not departing from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.

Claims

1. the indexing mechanism for automatic die cutter, comprise the main worm shaft of the movable bed for driving described die-cutting machine and for driving the head sprocket of defeated paper chain, it is characterized in that, described indexing mechanism also comprises encoder, servomotor, servo-driver and programmable controller; Described encoder is arranged on described main worm shaft; The output shaft of described servomotor is connected on described head sprocket; Described servo-driver is electrically connected with described servomotor; The input of described programmable controller and output are electrically connected with described encoder and servo-driver correspondingly, and this programmable controller gathers the signal of telecommunication of described encoder, through calculating, generate electronic cam curve; Described in described servo driver drives, servomotor, with the rule running of electronic cam curve, makes described head sprocket carry out intermittent rotary.

2. the indexing mechanism for automatic die cutter according to claim 1, is characterized in that, described encoder is arranged on described main worm shaft by shaft coupling.

3. the indexing mechanism for automatic die cutter according to claim 1, is characterized in that, the output shaft of described servomotor is connected on described head sprocket by reduction box.