Description
Feeding Station
The feeder can be filled continuously from the top. Timed feeding is carried out by cam-controlled, timed stack lifters between the vacuum belts. The feed gates with micro-adjustment permit smooth and safe feeding of blanks. The vacuum generating system is supplied with the feeder.
Chain Conveyor Unit
Two conveyor chains, adjustable in the length direction by quick change driver blocks for precise positioning and in the cross direction by means of spindles. The chains run in plastic guides. The top guide bars can be lifted together pneumatically by push-button to facilitate set-up.
The side guides can be also adjusted by spindles. The chains transport the blanks from the feeder to the gluing unit and further to the belt table.
Gluing Station
The gluing system combines the advantages of a two roller gluing station (with a driven metering roller covering the whole gluing section) and glue application limited from both sides (with a side scraper and fixed doctor blade). Thus the system offers the optimum solution for every possible application.
In both systems, a stencil cylinder with precise height adjustment applies the glue to the flat carton blank, supported by the anvil disks, which are positioned between the chains.
If one or several blanks are missing, the anvil disks drop down automatically, in order to avoid glue soiling them.
To set the stencil cylinder in the running direction, there is a motorized stepless adjustment. In the cross direction, it is set by spindles with a hand wheel. Even during machine operation, the stencil position can be modified to guarantee a precise glue application.
For cleaning purposes, the gluing unit can be withdrawn from the machine by lateral, easy-running guides. A separate drive keeps the glue rollers turning in case of a machine stop. The drive engages and disengages automatically when the machine stops and restarts.
The gluing stencils can be prepared on a separate stencil preparation table off-machine, which is provided with a scale. The stencils are then glued onto a stencil blanket and the complete mounted stencil clamped onto the stencil cylinder. At the end of a production run, the mounted stencil can be taken off and stored for future use.
Foil And Lining Material Station
This station consists of an unwind, a web infeed, a rotary cross cutter and an application cylinder. The cross cutter and the application cylinder are both provided with suction and blower air control for transportation of the film/tube material. The cut-off length of the material can be set from minimum to maximum by means of change gears.
The position of the film/tube material in relation to the blank is steplessly adjustable in the running direction by a servo motor, without stopping the machine. This means that, after size changes, the positioning of film/tube material and carton blanks can carried out in a minimum of time.
The automatic edge control sets the lateral fine adjustment of film/tube material.
Delivery
The delivery belts have a separate drive, which can be regulated steplessly and allows variable shingling of the blanks. Two upper vacuum belts, adjustable in the cross direction, ensure safe delivery and prevent interlocking.
Counter/ Control Devices
The delivery scope of the basic machine is completed with a digital speed counter, a counter of the total production figures with photocell as well as the following control devices:
| 1 | bullet blank positioning control behind the feeder, in order to avoid jam in the chain conveyor unit |
| 2 | bullet jam control in the blank delivery section |
On request, further control devices can be supplied, e. g. for missing film or lining material on the blanks or for the end of reel.