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Info / FAQs
Information and FAQs
Please read on for important information as well as answers to our most frequently asked questions.
OH & S Management
Javelin has a strong ongoing commitment to the continual improvement of OH&S management, design and supply of quality products and high-quality service.
Each of us has an obligation to ensure we have effective and up to date risk management practices in place.
In accordance with this obligation, Javelin has completed a design review and operational risk assessments for the latest models of Javelin automatic and manual single knife slitters.
With this in mind, we would like to bring to the attention of owners of Javelin machines in Australia, built and delivered prior to 2006, new safety requirements affecting machine guarding. In Australia AS4024-1-2006 requires machines to be fully guarded using fail to safe systems. Each company now has an obligation under the law to carry out a risk assessment of all machinery in their factory and we urge all our customers to ensure your own risk assessment data is compliant with the latest requirements as defined in the OH&S Act, regulations and Australian standards.
Javelin has carried out its own risk assessment for all machines manufactured up to 2006 and we can assist you to develop your own risk assessment.
FAQs
What is the Principle behind Single Knife Slitting?
The machine function is similar to that of a lathe. It employs a single circular knife to slit through the master or log roll without rewinding. The bevelled knife must be able to displace the role being split without deflection from the roll surface to the core resulting in an accurate slit width and acceptable edge quality. Products that may not be suitable for single knife slitting include densely wound films such as shrink films. Customers considering purchasing a SKS should always evaluate the product they wish to split as to its suitability for this method of splitting.
Why Invest in a Single Knife Slitter?
Only cost effective slitting method for VHB™ double-faced, acrylic foam tapes and foam sealant tapes and many other products. Reduce inventory of expensive products by stocking log rolls and slitting to width against the order. Supply small orders for non-standard widths immediately. Set up time is minimal for single knife slitters compared to slitter rewinders.
Automatic or Manual Machine?
The J2600 automatic machines is capable of slitting bigger diameters than manual machines. More slit rolls per day are possible with an automatic machine as the operator can pack tape while the next log roll is being cut. The J860 manual operation machine is less expensive and requires less maintenance. A Manual Machine should be considered when the number of slit rolls per day of multiple widths does not exceed 600 on average and roll diameters do not exceed 300mm (12”) A manual machine is ideal for short slitting runs of special widths for a wide range of materials.
Why is Safety Guarding required on a SKS?
Under CE, OSHA and AS Standards, single knife slitters are rated Category 3. In Australia AS4024-1-2006 requires machines to be fully guarded using fail-safe systems. It is mandatory for all suppliers and users to carry out a risk assessment for all machinery; each of us has an obligation to ensure we have effective and up to date risk management practices in place.
Risk factors include:
- Fragmentation – injury from steel knives and grinding wheels also flying objects (chuck pins)
- Electrocution – injury from access by unauthorised personnel to electrical control cabinet
- Entrapment – injury to operators with loose clothing drawn into rotating mandrel/material.
- Cutting injuries –injury from rotating knife and from handling knives without suitable protective gloves.
Javelin has a strong ongoing commitment to the continual improvement of OH&S management, design and supply of quality products, and high-quality customer service. In accordance with this obligation, Javelin has completed design reviews and operational risk assessments for the latest models of Javelin automatic and manual single knife slitters and each machine is supplied with the relevant risk assessment.
Owners of Javelin machines built and delivered prior to 2006 should be aware of new safety requirements affecting machine guarding. Your company now has an obligation under the law to carry out a risk assessment of all machinery in your factory. Javelin has carried out its own risk assessment for all Javelin machines manufactured up to 2006 and we can assist you to develop your own risk assessment.
Why Guarding is Essential for Steel Knives & Rotation Mandrels
Steel knives can and do shatter. Fragments of steel then fly in every direction. Chuck pins can also come loose and fly. Guards must enclose the machine and windows made of polycarbonate, not Perspex. Steel mesh guards of a type located at the rear of a single knife splitter are no longer acceptable unless covered in polycarbonate sheeting. Steel knives can bend and shatter when an operator attempts to slit a dense roll of material with a knife incorrectly bevelled or in the case of auto pivot knife head or the knife is pivoted at the wrong angle.
Mandrels rotating at high RPM with material with loose outer wraps can catch hold of loose fitting clothing and draw an arm or hand into the machine. All single knife slitting machines (automatic & manual) use geared mandrel drive motors which cannot physically be stopped
Why Purchase From Javelin Not Directly From An Asian Manufacturer?
The main issue purchasing an automatic machine directly from the Asian manufacturer or their agent compared to buying a machine (J2600) upgraded by Javelin. Your electrician is prevented from accessing the machine programme and operator screens by an access code installed by the manufacturer. You must have these issues dealt with directly with the manufacturer in Asia (via modem) or their agent. Communication issues mean more machine downtime! Javelin deletes factory programme and downloads new programmes developed by Javelin, which allows instant access by your local electrical contractor. This means no machine downtime – you are in control.
Operator Screen and Machine Manual
Some manufacturer’s English version manuals can be difficult to understand. There is a steep learning curve for new or casual operators. We enter machine settings into the screen for your most commonly used products to make our manuals easy to understand. Operator, maintenance and spare parts manuals can be completely rewritten and enhanced by Javelin to make them easier to understand.
Electrical Wiring
Manufacturers guarding, even if fitted does not meet standards required in USA/Canada/Europe/Australia/New Zealand. Electrical schematics (wiring diagrams) can often be inaccurate and/or indecipherable. Javelin fits new mechanical guards with interlocking guard switches on all opening doors and guards. These divert all safety functions through a safety controller and around, not through the PLC. Shielded cabling prevents interference to computers. All motors, drives, lights are earthed to prevent electrocution. Javelin rewrites electrical wiring diagrams specific to your machine
Machine PLC Servo, Motors and Electrical Controllers
Asian manufacturers can fit brands not known outside Asia and/or older version of well-known brands, all of which can be extremely difficult to repair or replace. Javelin ensures machines we supply are fitted with the latest Mitsubishi PLC, servos, controllers, drives and other items such as the operator screen. Smaller components are available on the internet or from Javelin.
Inspection Prior to Delivery
Due to the volume of machines manufactured by Asian manufacturers, pre delivery testing of individual machines is limited resulting in problems for the buyer. Javelin carries out a check of all machine functions, identifies and fixes any issues prior to releasing the machine.
Contacting Asian Manufacturer in Future
Javelin retains an agent in China (former Javelin engineer who now resides in China) to discuss and negotiate any issues on customer’s behalf. This helps us to eliminate misunderstanding and delays in communication.
Here are just some critical machine elements you will not get in a cheap manual operation machine
compared to purchasing a J860 from Javelin:
- Machined knife spindles, spindle face and quality bearings aligned so the knife runs true.
- Machined pedestal pivot shaft and quality bearings
- Electrical wiring to International Standard with all motors drives and the machine itself safely earthed and power isolator switch fitted.
- Only latest quality electrical components are used together with Allen Bradley or Omron drives, Red Lion index counter.
- Mechanical and electrical guarding to OSHA, CE and AS4024 standard.
- Polycarbonate safety cover protects operators against flying shrapnel from shattered steel knife or chuck pins and hand entrapment in rotating material/mandrel/chuck.
- Electrical guard switch cuts off power when safety cover lifted.