Application:

plastic film printing flexible packaging industry, paper printing industry, paper and plastic film/aluminum foil and plastic film composite industry, adhesive tape, label printing industry, protective film, optical film, high performance film industry, battery, electronic industry.

Nishimura Air differential shaft (Friction shaft,slip differential shaft)

3”outer diameter:φ75 Expand diameter:φ78mm

• Applicable tube ID:φ76±2mm
• Inside diameter(ID):φ45mm
• Differential ring:standard width 40mm,other width:30,40,45mm

Piston standard number:8pcs,other 6,10 or 12pcs.

It is suitable for packaging film and common film slitting rewinding(8 pistons)

12 pistons are suitable for lithium battery pole piece,the diaphragm slitting.

Central pressure shaft, pneumatic tightens, pneumatic differential slip. high accuracy and performance. a wide range of tension control.

Apply to full automatic transfer rewind, assure core don’t slacken off.

Fit the shouter axis, winding excellence.

To achieve extremely low tension-friction, have application in the thinnest(10U) PET film, electronic film splitting.

Very successfully used in lithium battery diaphragm,lithium battery pole piece,power battery pole piece,low tension PET film,electronic film.

Toshin Air differential shaft

3’’ outer diameter:φ75 Expand diameter:φ78mm

1)Applicable tube ID:φ76±0.2mm

2)Inside diameter(ID):φ45mm

3)Standard width:50mm

Central pressure shaft, pneumatic tightens, pneumatic differential slip. high accuracy and performance. a wide rang of tension control.

Apply to full automatic transfer rewinding,assure core don’t slacken off.

It is especially suitable for flexible packaging composite film slitting rewinding.

Ball type Air differential shaft

3”outer diameter:φ75 Expand diameter:φ78mm

1)Applicable tube ID:φ76±0.2mm

2)Inside diameter(ID):φ60mm

3)Standard width:25mm

Can form central pressure type,pneumatic side compression type,mechanical side pressure type differential shaft.Center pneumatic friction torque mechanical properties loss small,according to the pressure to get accurate proportion to the size of the torque,realize tension from small to large,large range accuracy control.

• Differential shaft slitting coil width the most narrow 5mm,other any size.
• The core independent design consists of 60mm diameter solid steel,large diameter base shaft=high strength+low deflection.Multiple bladder base shaft for highest strength/lowest deflection.
• Suitable for high speeding slitting machine,heavy ,large volume diameter material slitting.In all kinds of paper roll slitting, adhesive tape industry with very well.
• Equipped with sliding ring,coil easy handing,3 meters long shaft rolling also becomes easy.
• ZJZ shaft,make the GZZ excellent performance ,can be applied to hard tube core outside of the paper tube,firmly seize the hard tube core.

Key type Air differential shaft

3”outer diameter:φ75 Expand diameter:φ78mm

1)Applicable tube ID:φ76±0.2mm

2)Inside diameter(ID):φ50mm

3)Standard width:15、20、25、30、35mm,other size can made by request.

6’’outer diameter:φ150 Expand diameter:φ156mm

1)Applicable tube ID:φ152.4±0.2mm

2)Inside diameter(ID):φ60mm

3)Standard width:50mm,other size can made by request.

Could manufacture central pressure type,pneumatic side compression type,high performance differential slip shaft.to get lower mechanical loss, accuracy torque,to control tension in a wide rang with great precising.the most widely application,key tooth can take any tube core.

Differential  Shafts Action principle and Application

Differential shaft(friction shaft,air friction controlled rewinding shaft).This shaft is used for rewinding and the special unwinding of slitter machine.Is controlled its friction torque by compressed air.

The differential shaft is structure by the mandrel and multiple sets of friction rings (differential rings).The friction ring can independent sliding,torque is controlled in central pressure or lateral transfer pressure.ensure every coil rewinding in a constant tension,it’s uniform and tidily from inside to outside diameter.

Slitter machine is divided the whole material roll to many coils.It is required that the tension shall be correctly controlled,and this is the guarantee for the extension of product rate and transverse uniformity.

In the proceeding,due to the material’s own existence thickness error.each coil diameter produce larger accumulated error.it cause the tension and speed badly,each coil has a bigger difference,cause material coil elastic is differ,uneven, part of the coil is tensile because of excessive tension.Differential shafts can overcome these problems,can accurately control each roll material tension.Friction ring sliding at a certain friction torque,slide momentum just compensation speed difference.

According to the material,slitting width,thickness,tension discretion,choose suitable differential shaft can achieve the ideal effect.Use differential shaft,slitting machine automation degree,human operation,speed,rewinding accuracy can be realized and improve.

Especially,the expensive materials：tinsel,battery septum,special paper etc,by using differential shaft greatly enhance the effect and reduce the cost.

Air differential shafts slip internally to accommodate multiple width rolls on one shaft. Always custom-made, the shafts expand for a precision fit and are available in several designs and mounting styles.
You can run multiple rolls on one run and still get the tension equalization that you need for a good quality output.

Differential Air Shafts

Synectics Differential Air Shafts are designed to deliver multiple roll tension equalization to slit rolls winding on the same shaft. Advanced features hold rolls straight and true, reduce roll loping and offer positive mechanical locking to prevent lateral roll movement for improved roll quality, reduced scrap and fast, easy setup.

Choose the Model GS-004 for new energy Lithium battery separator/ pole piece/copper foil/aluminum foil.

The Model GS-005 for tape/label industry.

The Model GS-001 for PVE material winding.

The Model GS-002 for slitting and rewinding the medical infusion bag material.

The Model GS-003 for high performance functional film, optical film, protective film, cling film.

HY Air-roll-lock differential air shafts slip internally to use multiple width rolls and materials on one air shaft. Always custom-made, these shafts lock for a precision fit and are available in several mounting styles.

Because GS Air Roll Lock Differential Shafts slip internally, we have eliminated the common issues still found in our competitors differential shafts:

• No side-to-side wobble
• Positive expansion and retraction to a consistent diameter
• Duplex and multiple tension applications
• NO core dusting or wobble

USAGE:
Slitting/Rewinding where multiple roll widths are running on one air shaft.

The Air Roll Lock Differential Air Shaft is suitable for the full range of converting and web production operations. Its rugged construction and shaft design is available in 3″, 6″, and 10″ diameters and up to 150″ wide. Air shaft weights for your specific application are available upon request.

What is differential winding?
In a standard winding environment, common sense might imply that each winding roll would take up its stream with consistent winding tension independent of length or diameter variations. Unfortunately this is not always the case. Differential winding is needed if baggy web length variations are significantly large relative to web strain. Higher-modulus baggy products, where it is difficult to simply pull out the bagginess, are more likely to need differential winding for baggy webs.

By using a GS Air Roll Lock Differential Shaft, each winding roll turns at the rpm appropriate for roll diameter and entering web length. GS Differential air shafts have an internal shaft driven faster than the winding rolls. GS clutched rollers regulate tension accurately for each individual roll.

When to use a GS Air Roll Lock Differential Shaft:

• Differential winding of multiple cores on one air shaft, or in a duplex setup.
• Center winding with/without single or multiple lay-on rollers
• Center-surface winding
• Min-gap

Best of all you can have your differential air shaft in just a few weeks.

PRODUCT UPDATE : GS Air Roll Lock Differential Shafts are now available in 10″ diameters for the carbon fiber industry.

PRODUCT UPDATE : GS Air Roll Lock Differential Shafts are now able to slit from 1/2″ wide and up.

PRODUCT UPDATE : GS Air Roll Lock Differential shafts are now available in 70MM.

PRODUCT UPDATE : With the converting industry demanding more efficiency and better roll quality, GS, Inc has consistently delivered newer, more efficient air shaft designs. GS most recent upgrade to its highly successful air-roll-lock differential shaft design again improves overall performance and reliability.

GS who seek to improve efficiency by winding multiple width rolls on the same air shaft have typically approached differential winding with optimism, but have not always seen good results. This is due to poor shaft design. GS revolutionary air-roll-lock differential design changed the industry’s perspective on differential winding and allowed converters to improve efficiency and roll quality with an easy-to-use and effective design.

Because differential winding can be a sensitive and delicate operation, it’s vitally important that an air roll lock differential shaft operate at maximum efficiency with minimal effort. GS most recent upgrade to their differential shaft design has improved the GS clutched rollers by improving core grip while reducing the number of moving parts. This both improves efficiency and reduces the risk of damage to the air shaft.

The new improvements enhance the differential air shaft’s ability to allow rolls to slide easily on and off the shaft. When disengaged, the GS clutched rollers move freely, allowing operators to easily move cores and rolls along the shaft. Once engaged, the rollers lock independently in place and are able to control tensions from under .15 PLI on each individual core, regardless of each core’s width.

Differential Rewind Shafts

1.Works in low or high tension applications.

2.Allows narrow and/or varying slit widths and yields uniformly wound rolls.

3.Slipping occurs inside the shaft so no core dust is created – contamination is minimized.

4.Rolls of varying slit widths can be wound in a single operation.

5.Loading cores and unloading wound rolls is quick and easy.

Differential Rewinding Shaft

GS differential rewind shaft works like a “shaft within a shaft”. Winding cores are mechanically locked onto one or multiple friction rings, depending on core width. When the outer race is rotated against the inner race of the friction ring, the expanding balls ride up cam ramps to center and grip the core. These friction rings then consistently slip like a clutch around a central shaft, which runs at an over speed RPM. Similar to a strip shaft, this central shaft contains air bladders and friction strips running along the shaft. Winding torque to the friction rings (and consequently to the cores and rolls) is controlled by adjusting the air pressure in the bladders. As the bladders expand, they press the friction strips out to exert force on the inner surface of the friction rings. Generally, as rolls build, air pressure is increased to deliver the proper winding torque. Because the web material may have variations within it, some rolls will slip more than others to creat uniformly wound rolls.

• More accurate tension control for light tension applications.
• Dynamically balanced central shaft.
• Suitable for cardboard and all types of plastic cores.
• Easier loading of cores and unloading of rolls.
• Controls torque over larger overspeed ranges.
• Springs ensure that all friction rings are engaged and gripping the cores across the full web width.
• Engineers review each application to provide a custom engineered solution.

Differential Rewind Shafts

The key benefits are

• Spacer-less set up
• No slip between the core and the chuck preventing core dust generation
• Precise control for tension sensitive materials
• Chucks are available to suit a range of core sizes including 76mm and 152mm internal diameter (ID) cores with rapid changeover
• Narrow width chucks are available down to 10mm wide

We have developed a full differential shaft system to overcome the problems on slitting machines associated with gauge variation across a web. The slitter rewind shaft is filled with a complete set of differential chucks so there is no need to position individual chucks each time the slit pattern changes.

The Universal differential chucks grip the inside of the core locking the chuck and core together.  Control of rewind torque is obtained by controlling the friction between the inside of the differential chuck and friction strips in the shaft it is running on. Not only does this provide precise control of tension regardless of slit width, it also ensures core dust is not generated as there is no slip between the core and the chucks on the slitter.  The design of the chucks enables easy loading of the cores and offloading of the reels, whilst locking the core into position to prevent sideways movement during winding

This differential friction shaft system is fitted on most new slitting rewinders supplied by Universal Converting Equipment and can also be retrofitted onto a wide range of slitting machines.

We have standard differential friction shaft systems that can be retro-fitted onto a range of machines including Titan, Atlas, Dusenbery, Elite, Cameron and Ashe slitter rewinders. When combined with a Converter Guide 4 Digital web guiding system, Computacore™ core alignment system, and Computaslit automatic knife positioning, a slitting machine changeover which may have taken one hour can be completed in less than five minutes.

range of Differential Shafts are designed to be easy to use and relatively maintenance free, ensuring the highest winding quality, even when rewinding very narrow rolls – down to 9mm in width. The Cores are gripped by Friction Rings which run on a central Hard Chromed shaft, with a relatively low coefficient of friction over which the friction rings can rotate. The tension ranges of the shafts can be varied by changing the expanding strip material of the centre shaft, which provides the slippage. By designing the rings to slip internally, common issues have been eliminated in comparison to other designs of Differential Rewind Shafts.

• NO core dust in the mechanism.
  •    Cores can be reused
  •    Sideway slippage eliminated
  •    Positive expansion and retraction to a consistent diameter
  •    Duplex and multiple tension applications
  •    High load carrying capacity