Natgraph Automatic Sheet Stackers & Collection Trays
- 1. EQUIPMENT SOLUTIONS Automatic Sheet Stackers & Collection Trays stencil processing screen printing air force ultra violet infra red Natgraph’s Automatic Sheet Stackers have Natgraph also manufacture a range of been developed over many years with Collection Trays for smaller print runs, these 100’s of these units in daily use world- are available in all 8 standard sizes, as wide. Available in 8 standard sizes, there well as special versions for side take-off are also purpose built versions for high applications. pile/high speed applications and special A range of Vibrating Collection Trays is substrates. manufactured to all Natgraph’s standard An optional CCTV Stack Monitoring System dryer sizes. can be added to allow the print machine operator to view the operation of the stacker remotely. Automatic Sheet Stackers Collection Trays Continuous Operation Option CCTV Stack Monitoring System Vibrating Collection Trays Natgraph Limited, Dabell Avenue, Blenheim Industrial Estate, Nottingham NG6 8WA, United Kingdom Tel: +44 (0)115 979 5800 Fax: +44 (0)115 979 5700 sales@natgraph.co.uk. www.natgraph.co.uk
- 2. Automatic Sheet Stackers & Collection Trays Automatic Sheet Stackers Features • Independant control or syncronisation • Touch screen control of:- with Natgraph dryer Inlet conveyor speed • PLC Touch Screen Control System Vacuum on/off • Digital sheet counter Pneumatic side jogger delay/frequency • Sheet ‘jam’ sensing system Joggers open/closed • Feeder stop switch Air blower delay time/duration • Side load/unload option Stack height adjustment The Natgraph Automatic Sheet Stackers are As an option these units can be supplied in the designed to stack a wide variety of substrates at side loading/unloading versions, a CCTV Stack high speeds, automatically positioning them on top Monitoring System and optional vacuum in-feed of each other to provide a uniform vertical pile of table are also available. Adjustable Air Blowers material that can then further processed. These stackers require a three phase power supply. These Stackers are completely self contained with their own drive motor, air blower and hoist. Available in a variety of sizes to suit all print formats, this unit is extremely efficient and versatile, with special versions able to accept sheets at up to 8,000 per hour. A combination of thick plate steel side frames and heavy duty tie bars means these machines are capable of continual operation. The hoist is chain operated with a reinforced steel base plate with ramp front, capable of lifting 1,500kgs. The in-feed section consists of a variable speed, belt driven feed table (vacuum option), with fully adjustable spring loaded delivery wheels and an adjustable air floatation system aiding sheet transfer into the stack. This air system consists of a near silent blower connected to a number of air pipes blowing air under each sheet to create an air cushion as it enters the stacking area. Precision Stacking Stack uniformity is achieved by 2 heavy duty, electro mechanical side joggers, (4 on larger models) and a full width rear jogger. A sheet sensor located above the in-feed table operates the joggers via an adjustable delay timer. The complete rear section of the stacking area moves in and out in conjunction with the side joggers to ensure a positive sheet position against the head lay. The pile is automatically self lowering, with a height sensor and full stack safety cut out device. Controls consist of variable speed belt drive, hoist raise/lower, blower on/off, sheet counter, feeder Pneumatic Joggers stop, emergency stops etc. A ‘sheet jam’ sensor is built into the stacker’s control system, with a feeder stop signal being automatically sent if the stack is full, or a sheet gets caught. EQUIPMENT SOLUTIONS 2 of 4
- 3. Automatic Sheet Stackers & Collection Trays Continuous Operation Option Features • Pneumatically operated support ‘gate’ • PLC control system • Fault Signals The Natgraph Automatic Sheet Stacker can be fitted with a Continuous Operation feature. This consists of a pneumatically operated support ‘gate’ that provides a temporary sheet support to approximately 60mm of substrate height whilst the stack below is unloaded. This system is operated via the units PLC control system, which automatically controls the ‘gate’ insertion and withdrawal timing. In the event of a new substrate pallet not being inserted in time, the stacker will enter a fault condition, the feeder will be stopped and a fault signal displayed. This feature allows a small or large pile of printed substrate to be removed from the stacker without interrupting the printing cycle, therefore allowing continuous operation. Sheet Collection Trays Features • Adjustable sheet stop • Castors (Not vibrating model) • Height and angle adjustment • Optional air blower tube • Large hand wheels • Optional vibrating model • 8 sizes The Natgraph Sheet Collection Trays have been A vibrating version is available which will ‘jog’ designed to operate with all of the Natgraph dryer the substrate into a neat stack. This version has sizes, as well as other makes of dryer. They are of a special heavy base frame with rubber feet. An a steel construction, with a heavy duty framework adjustable vibrating motor assembly is located and fabricated sheet tray. below the sheet tray, making it vibrate and move the substrate into one corner. A separate electrical The sheet tray has a movable sheet stop to accept control box requires mounting close by. These units Vibrating Collection Tray different paper sizes whilst the stand is adjustable require a single phase power supply. model 110 both in height and angle. The tray can also be tilted to either side so the substrate will fall that way. The box section stand is on swivel castors and is easy to move. An optional air blower tube can be fitted to aid in the delivery of larger or heavier substrates. EQUIPMENT SOLUTIONS 3 of 4
- 4. CCTV / Specifications CCTV Stack Monitoring System A colour CCTV system can be fitted to all This allows the operator to see the stacker without Natgraph dryers, this system includes a leaving the printing machine, which is very freestanding, mast mounted camera above the important when operating long, high speed, fully stacker and a dedicated TV monitor mounted on a automatic printing lines. fully adjustable stand above the inlet of the dryer. CCTV Stack Monitoring System Automatic Sheet Stackers Model No. 90 110 130 155 170 185 215 Max. Sheet Size 96 x 78cm 112 x 86cm 136 x 96cm 161 x 119cm 176 x 139cm 191 x 154cm 221 x 165cm (38” x 31”) (44” x34”) (53” x 38”) (63” x 47”) (69” x 55”) (75” x 60”) (87” x 65”) Height Belt height of dryer plus 10cm Width 156cm (61”) 172cm (68”) 196cm (77”) 221cm (87”) 236cm (93”) 251cm (99”) 281cm (111”) Depth 139cm (55”) 157cm (62”) 165cm (65”) 190cm (75”) 210cm (83”) 225cm (89”) 236cm (93”) Weight tbc tbc tbc tbc tbc tbc tbc Voltage Three Phase 400 Volts 50 Hz. AC Power 1kW Current 5 Amps Sheet Collection Trays Model No. 70 90 110 130 155 170 185 215 Max. Paper Size 76 x 68cm 96 x 78cm 112 x 86cm 136 x 96cm 161 x 119cm 176 x 139cm 191 x 154cm 221 x 165cm (30” x 27”) (38” x 31”) (44” x 34”) (53” x 38”) (63” x 47”) (69” x 55”) (75” x 60”) (87” x 65”) Height Belt height of dryer (adjustable) Width 91cm (36”) 111cm (44”) 131cm (52”) 151cm (60”) 176cm (69”) 191cm (75”) 205cm (81”) 236cm (93”) Depth 74cm (29”) 84cm (33”) 95cm (37”) 102cm (40”) 125cm (49”) 145cm (57”) 160cm (63”) 169cm (67”) Weight tbc tbc tbc tbc tbc tbc tbc tbc Voltage Single Phase 220/240 Volts 50 Hz. AC Current 5 Amps (Vibrating models only) Distributed by: Download our brochures at www.natgraph.co.uk 4 of 4 05 The manufacturer’s policy is one of continuous improvement and the manufacturer therefore reserves the right to change or modify the design without prior notice. The technical specifications given are therefore for information only.