1, from the main function and control

Before the labeling machine labeling was detected in the bottle forphotosensitive front, because of the different diameter of the bottle should be made corresponding eye movement or labeling time of change, if not for this change cannot ensure labeling required in each bottle position. Now the products are with "automatic calculation of the label length" functions,this function can make up for the weakness. "Automatically calculate thelabel length" are in the automatic control technology combined with PLCand servo motor technology to form, when the conveyer belt bottle by detecting the electric eye, then measure the radius of the bottle, and thebottle body flange on the most salient point as induction point labelingsignal, no matter how small bottle diameter, are the outer circle of the bottleedge dots for induction point labeling signal, between electric eye to peel plate distance without mechanical adjustment, the standard time also does not need to make another adjustment, automatic control theory which is "automatic calculation of label length". This is also the people preferred tosticker labeling machine shall have the function of.

In the synchronization control of speed, self-adhesive labeling machineshould take the "automatic calculation of label length" functions, should also be done automatically the speed of the conveyor belt, a standard speed, the standard length of synchronous adjustment, which is alsocompared with the traditional labeling machine of distinction, but labelingquality stability. Control the speed of the traditional adhesive labeling machine is adjusted depending on personal experience, and the artificial adjustment difficulties are all actions to synchronization. If it is notsynchronous, the labeling process will frequently change, resulting in poor quality.

In the control system, the preferred (PLC man-machine interface) basedcontrol system, as opposed to the early SCM (single board computer), the use of general PLC as the main control device, can make the PLC control system to achieve the following goals: (1) more stable, more reliable; (2)after the maintenance more convenient, easy updating; (3) can be conveniently and upper and lower positions by on-line control.

In addition, consider to increase the visual system, its integrity, charactersof print, and labeling of whether or not, whether complete real-time detection, control and alarm.

2, from the printing speed and output speed, on Selection

In the choice of self-adhesive labeling machine, people tend to focus on the labeling yield (i.e. can put how many pieces per minute), and can'tcomprehensively from a standard speed, printing speed, roll stickingvelocity to consider. Of course, the labeling yield covers other indicators,but other speed indicators on the use of quality and production play a key role in the development of people, from the analysis of observed thatinitiative agencies quality and potential, this is the choice of self-adhesivelabeler should investigate the reasons.

(1) standard speed send adhesive labeling machine, sticker labeling machine in production facilities often have now, not according to the label width and printing speed are confirmed by the highest yield index,manufacturers in the sample selection is unreasonable, because the highest yield index of general manufacturers samples are given in a taglength and a printing method as the basis of the. Therefore, in theproduction of self-adhesive labeling machine selection should first examine its send rate, from the theory of the relationship between speed andlabeling yield: Q=1000V/ (L + a)

The maximum yield of Q labeling: to give mark velocity calculated, /; V is the largest give mark velocity, m/min; L for a single label length, mm; a labelspacing, mm.

For example, of a diameter 36 bottle labeling, L=52mm, a=3mm,V=25m/min, Q=454 / cent. When you select the V=25m/min, taking into account other factors, label length L=52mm, maximum labeling yield only in400 / cent range, not to consider again later to speed up or replace thelonger tag.

The domestic market, the largest label delivering speed general sticker labeling machine product is 38m/min, and the strength of technology companies to send standard maximum speed of product is set to 70m/min,this index can be explained: to ensure that the original labeling yield, will be able to transform the label length (variable length); high mark sending rate is established in the mechanical hardware quality, component configurationand servo control technology, not the general manufacturers to make, itsvalue is reflected the professional and technical standards for manufacturers.

(2) adhesive labeling machine printing speed, the pharmaceutical industrythe labeller, tags can be printed on the batch number is particularly important in. Therefore, send with roll on sticker labeling machine speedwhen the choice, but also consider the printer printing speed, the minimumcan be the actual labeling production capacity value.

Self-adhesive label printing batch number in the pharmaceutical industry in general hot printing, hot printing is to heat the prefix by ribbon for printingtext technology. Why hot printing is the preferred method of self-adhesive label printing batches of pharmaceutical industry? Compared with therecent hot printing ink jet printing mode, one is the cost of production and equipment for hot printing maintenance cost is low; the two is the hot printing will not have the similar part of inkjet printing device for printingsolvent will affect the odorous air conditioning system circulation; three is the ribbon can be recovered, with a green side.

Although, hot printing has its own features, but it also has weakness, is theprinting speed has a certain limit, the domestic hot printing machine speedat 400 BPM, after this value printed text is not clear. So some people think that: the highest yield sticker labeling machine with hot printing can only be400 / cent, more than 500 pieces / sticker labeling machine output will match the ink-jet printing.

3, from the special perspective

In the bottle labeling, we often meet with the special purpose, for pharmaceutical production, may encounter: (1) double sided; (2) similar to plastic bottle surfaces due to release agent caused label adhesion decreased or surface of a "bubble" phenomenon. Put forward special requirements on the labeling machine selection.

3.1, on the double sided with the choice should be considered.

If the need for double sided with the flat bottle, bottle, round bottle, at leastshould consider the following points: (1) the label head can realize the multi-dimensional adjustment, to ensure that the labeling accuracy, such as the 6 dimensional adjustment; (2) the label head with double roller design, in order to improve the tag tension, Eli and long tag tagging.

Consider 3.2, labeling the surface easy generation "bubble" issue

(1) should eliminate electrostatic effects, can be used to electrostatic ion blower bottle for electrostatic treatment, at the same time with electrostaticbrush to remove labels electrostatic; (2) increase the pressure tag labeling,as much as possible to increase the adhesion between the label and bottle;(3) the labeling process, it is possible for the label and bottle into line contact, to completely go away "bubble".

 4, from the labeling quality

General labeling recognized quality requirements: (1) labeling error less than ± 1mm, even if the coincidence site to repeated labeling can also achieve this value; (2) after sticking label and bottle surface should beattached, should be smooth, no wrinkles, no "bubble" phenomenon; (3)print batches with distinct no overlap, and fuzzy phenomena, and batch number of bit error is less than ± 1mm.

To achieve the above labeling requirements, in addition to the label quality and reasonable operation, also associated with the device, so the choice should consider the following points: (1) roughness labeling, mainly to see the rational design of roll sticking mechanism and high precision machining,the rolling stick pressure to make sure that the label and the surface of the bottle body line contact; (2) high configuration requirements of driving element, because the core of the action of the servo motor 1 sets of high precision ultra low inertia, to ensure that the labeling quality, the application of closed loop control, and motor itself can time their compensation in the correction of their own position; (3) detection method and detectionelement, but also to ensure the quality and labeling based labeling yield,technical strength of the manufacturers have changed in the past the detecting element only detect label printing the imperfections, now thedetection method to measuring the thickness, the generated by the gap between tags and thickness change to control the operation of electricservo, this is currently the best detection method, the greater reliability; (4)to achieve the perfect labeling of words, the whole control is also veryimportant, especially the bottle conveying speed and the speed Degree.Should pay attention to in the choice of control, production speed signal can be sent to the synchronization system, after analysis and calculation to the servo motor, requests the two speed matching; (5) element configuration, because today's high-speed labeling is built in continuous operation in the machine, the requirements of each component to respond quickly, all actions are in instantaneous, it also put forward the request to the detecting element configuration. For example, on the labeling labelingmotor drives, servo motor, conveyor motor, delivery, separation, frequency converter, motor motor electric eye detection, eye, label label paperstopping proximity switches, programmable controller, man-machine interface elements have configuration requirements.

5, tag selection and print settings

5.1, the choice of tag

Labeling machine for label are rolled, label quality will directly affect thelabeling quality, processing label printing process of the die-cutting, slitting,electrostatic and dust are also important.