How to Choose pre-stripping machine?

A lot of time and effort often goes into finding the right equipment for your facility. Purchasing a new wire cut & strip machine is no different. With so many options, where does one start? Asking these five questions during the decision making process will help ensure you end up with equipment that fits all of your needs.

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Will my new cut & strip machine be flexible enough to process all of my current and future applications?

Unless you&#;ll be running the same few jobs day in and day out, you&#;ll want a machine that is as flexible as possible. It is best to focus on the extreme ends of the application range in regards to wire and cable size. For example, if the largest wire you currently process is 10 AWG, determine if there is a chance you&#;ll need to process 8 AWG or larger wire in the future. You should also determine if there is a chance you will require advanced features like a multi-blade cutterhead (for processing multi-conductor cable jackets and inner conductors) or a rotary incision unit to make radial incisions through the various cable layers when processing coaxial and other multi-layer cables. Being prepared for future needs will allow you to get the most out of your purchase.

How long will changeovers take and are tools required?

Most modern cut & strip machines are fully programmable; however there are always several job specific mechanical parts (guide tubes, blades, etc.) that have to be changed between jobs. Changeover times can be minimized if these changes can be accomplished without requiring tools. The smaller your batch size, the more frequent your changeovers will be. A cut & strip machine with shorter changeover times will provide a quicker ROI and continue to pay dividends over the life of the machine.

What is a realistic production rate that I can expect with my new cut & strip machine? 

When comparing datasheets for several different cut & strip machines, you&#;ll sometimes see a specification listed for &#;Maximum Transport Speed.&#;  A high maximum transport speed doesn&#;t always correlate to a high production rate, unless you are running longer lengths. The cutting axis and other machine specifications all contribute to the machine cycle time, so it&#;s better to focus on the &#;Maximum Production Rate&#; listed for each wire length and application. It&#;s always best to send wire or cable samples to the machine manufacturer before purchasing to get realistic production rates for your specific application.

What pre- and post-processing accessories are available for my new cut & strip machine?

Keep in mind that typical entry level cut & strip machines cannot be integrated with a full range of pre- and post-processing accessories. Determine what additional operations you&#;ll need and whether the manufacturer of the cut & strip machine offers fully integrated accessories for those operations. Typical operations include hotstamp or inkjet marking, coiling and stacking to name a few.
Another of the most basic accessories is a prefeeder. They are available in many different sizes and styles. The most basic models feed wire and cable directly by pulling it through motorized belts or rollers. The more advanced prefeeders drive the cable reel directly, which is gentler on the wire or cable being fed. The most advanced models also feature a motorized reel lift and full enclosure for maximum safety. Make sure to specify a prefeeder that matches or exceeds the maximum acceleration and feed rates of your new cut & strip machine.

Will my new cut & strip machine be able to integrate with my ERP system or my Manufacturing Execution System software?

The factory of the future will require that all production equipment be connected to a network. When shopping for your next cut & strip machine, make sure that it has the connectivity required for integrating it into your network. Networking your cutting and stripping equipment opens up a whole new range of benefits. By sending jobs directly to the cut & strip machine, you&#;ll eliminate operator keystrokes (and possible errors) and save a lot of programming time. You&#;ll know exactly when each job is started and completed and be able to monitor average production rates. You&#;ll also be able to optimize work orders automatically in the best sequence, taking changeover times, due dates, available machines and personnel into consideration.  Finally, you&#;ll be able to keep track of how many cycles each machine has completed and when maintenance should be scheduled. An added benefit is that every job will have full traceability.

Choosing the right cut & strip machine for your factory is an easy task if you know what to look for. While purchase price is always a consideration, the main focus should be on procuring the most flexible machine that will offer the shortest ROI, resulting in the lowest cost per lead.

Automatic or Semi-automatic?

First thing to think about is the type of job to be done. In general, we can look for a semi-automatic machine when we have to wrap up to 20 pallets/h while an automatic machine is the right choice for 50 pallets/h and over.

• The automatic wrapping machines are characterized by completely autonomous operation like load, start, wrap and unload. The automatic machine should be protected with safety fences and with &#;muting&#; safety barriers as required by law, in order to protect the operator while the cycle is in progress. Effe3Ti provides, on request, complete automatic lines of chain or transport rollers, with all the safety systems required by the regulations (including non EEC markets EN).
• The semi-automatic wrapping machines are characterised by versatility of use in any condition the customer must operate, have the possibility of having a &#;fork mounted&#; frame to be easily transported from one production department to another and there is also the version having a rotating table with fork housing. The loading and unloading of the product to be wrapped are borne by the operator as to the cycle start, using the control panel on the column of the machine. The semi-automatic machines do not require the use of safety fences because the movements of the machine are all lower than those established by the legislation and, in the design phase, solutions have been studied to ensure safety.

Rotating Table or Arm? &#; or maybe a Robot wrapper?

Second thing to think about is the type of wrapping machine: rotating table (where the pallet is loaded on a platform that rotates to wrap) or rotating arm (where there&#;s an arm that rotates around the pallet).

• We usually have a machine with rotating table when the weight of our product does not exceed / kg. The load capacity of the rotating tables is limited.
• We use a machine with rotating arm when the weight of our product exceeds / kg. However, this is not the only reason. Even if the machines with rotating table are equipped with advanced management of the rotation, we can prefer the rotating arm when we have to wrap unstable products.

Separate discussion regarding self-propelled wrapping machines (robots). These special machines, in fact, are equipped with wheels and powered by high-performance batteries that allow them to be moved anywhere you want. These are not &#;minor&#; machines at all, in fact they can automatically wrap the product pallet according to advanced wrapping programs. Choosing a self-propelled wrapping machine allows you to wrap your products without having to move them.

Do we save stretch film?

It is not just an ecological choice to opt for stretch film saving. Consumables have a significant impact on the logistics costs of the company and represents a &#;hidden cost&#;. Let&#;s see what the possibilities are.

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The consumption of film depends on the type of reel holder installed on the wrapping machine. The economic model has a reel holder unit with pre-stretch (this is the name that defines the group that supports the coil and dispenses the film processed between the rollers on the package to be wrapped) mechanical or with magnetic brake. This model only provides tension adjustment of the film between the machine and the package.

The most performing model (also for film consumption) is definitely the motorized pre-stretch, available with one or two engines.

The motorized pre-stretch with one motor has a fixed pre-stretch ratio, obtained by distributing the motion of the rollers with gears. You can have different types of pre-stretch ratios (100%, 150%, 200%, 250%, 300%, 350%) based on the gear ratio reduction (gear change ratio with gear pair replacement). If 100 mm of film are distributed, after passing through the motorized rollers the same will reach a length of approximately 300mm (in the ratio 200%) with a considerable saving of film.

The motorized pre-stretch with two engines easily reach the ratio of 400%.

This solution also makes it possible to reduce the tension of the film on the package and therefore the winding of unstable and non-homogeneous products (the wrapped pre-stretched film continues to recover the elastic elongation for about a day. Obviously, the film also have a plastic phase which will allow it to be elongated without return and without breakage during the wrapping cycle).

The film can be arranged manually on the package to be wrapped (in semi-automatic machines) or a clamp system provides to block the film on the rotating table for dragging during the wrapping cycle.

The cut of the film can be manual or automatic with hot wire enabled only during the cycle, at the pre-established time.

The welding of the film strip which remains at the end of the cycle takes place either manually or automatically according to the Customer&#;s needs. The welding pad, at a temperature of 115 ° C, automatically welds the flap of film on the film previously wrapped on the package. If the package to be wrapped is not homogeneous, a counterplate for the welder is interposed between the pad and the package in order to safeguard the product.

What do we need?

At this point, what is the best machine? In fact, the most sensible advice is to talk to one of our qualified technicians, who will certainly be able to suggest the appropriate solution. There are countless needs and as many possibilities to manage them, perhaps combining the wrapping machine with one or more accessories that make it perfect for the work that needs to be done. So, now that you have an idea, contact us.

Here a non-complete list:

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