strip processing machines by metal-cutting

Juliu

s M

asch

inen

bau

J u l i u s M a s c h i n e n b a u ©

Heinz Berger Maschinenfabrik GmbH & Co. KG

Kohlfurther Brücke 6942349 WuppertalGermany

Tel.: +49 202 24742-0Fax: +49 202 24742-42

[email protected]

Strip processing machines by metal-cutting

• 2 •

Table of Contents

Applicationshe Printing and paper industry page 4 Pressing and stamping industry page 5 Tube industry page 6–7 Automotive industry page 8–9

Strip Edge Trimming Strip edge trimming by metal-cutting page 10–11 Strip edging machines page 12–15 Strip edging lines page 16–19

Strip Surface Treatment Strip surface treatment by metal-cutting page 20–21 Grooving machines page 22–23

Accessories (strip edging machines) Automatic centering system, tool motor adjustment page 24 Loop operation, swarf removal page 25 Measuring technique, CNC technology page 26 Tool holders page 27

Accessories (strip edging lines) Winding technology page 28–29 Traverse winding systems page 30 Multicoil page 31 Strip tension technique page 32–33 Levelling and brushing machines page 34–35

• 3 •

Production Parts

Strips for the production of:

• Tubes

• Hollow sections

• Plain bearing bushes

• Cutting rules

• Alu profil frames

• Tailored strips

• Transformator sheets

• Motor sheets

• Doctor blades

• Strippers

• Saw blades

Industries

• Tube industry

• Pressing and stamping industry

• Automobile industry

• Steel service centers

• Electronic industry

• Packaging industry

• Rolling mills

• 4 •

Printing and paper industry

Edging, grinding and po-lishing of strippers, doctor blades and cutting rules

Strippers, cutting rules and doctor blades are pro-ducts whose strip edge characteristics represent a decisive quality feature.

The double-sided NELL grinding station of the series BSM3000-CNC achieves micro grinding at the strip edge respecting precise height tolerances.

The strips are pre-ground or chamfered on a JULIUS strip edging line.

Finally the strips are polished.

Double-sided strip grinding station BSM3000/D-CNC (One-sided grinding station BSM3000/300/E-CNC for the production of doctor blades

Strip grinding station BGM1500/D-CNC for the production of cutting rules Strip edging line of the series QUINTO for strip edge trimming by metal-cutting

• 5 •

Pressing and stamping industry

Levelling against waviness and coil set

For a lot of production processes, such as the treat-ment of the strip edges or the strip surface, the strip has to be flat and straight.

Coil set and waviness have to be dressed to guaran-tee a good performance of the further production processes.

The flat levelling machine of the series DRAP is desig-ned for vertical levelling of wound strip material. The levelling machine reduces waviness and eliminates coil set.

Deburring and simple contour at the strip edge

At pressing and stamping lines the burr damages the tools and rolls. To eliminate the burr, a strip edging machine is integrated into the line.

The edge is cleaned and the strip width tolerances are improved. The swarfs are removed by different swarf removal systems.

Mostly a deburring device of the series UNO is integ-rated into a pressing line treating the strip edges with one tool at each side.

• 6 •

Tube industry

If a slit edge is used as a functional edge, the edge quality of slit strip is not adequate to produce a high-quality product.

Less than 35% of the edge area is cut cleanly. The rest is broken and exposes the ruggedness of the slit, unevenness in regards to straightness, angle and structure.

Coatings (e.g. with tin, aluminum ...) and oxidation disturb the welding process. The V-shaped opening between the edges widens with increasing strip thick-ness and decreasing tube diameter. The cross-section of the two edges which have to be welded diminishes and the area which has to be liquefied grows.

This means that the area which must be compressed as well as the compressing force after welding have to increase. The weld setup grows and the weld seam has to be shaped at the inside and the outside of the tube. Modern welding processes – such as laser wel-ding – demand machining of the slit edge as a pre-condition for efficient processing.

The optimization of the strip edge is a basic condition to benefit entirely of the advantages of modern wel-ding methods.

A catalogue about strip edge trimming for the prepa-ration of tube weld seam is separately available.

WITHOUT strip edging WITH strip edging

• 7 •

Optimizing of the weld seam

Thanks to strip edge trimming by metal-cutting, the strip edges are steadily cleaned and straight. They meet requested dimensions and expose the inner structure at the surface.

The edges are treated at an adjustable angle so that any coating is removed and the V-angle is shaped to any angle.

The result is:

• less energy input

• higher welding speed

• less bulge

• less shaping at the inner and outer weld seam

• fewer rejections

• less strip width addition

• gain of material

• homogenous welding structure

• better quality of the weld seam

• better shape due to less compression

The grooving machines remove one or several layers of coating from the strip surface, so that the strip can

be welded onto itself and be transformed into hollow profiles.

Strip edging machine type DUO

Grooving machine type TRINU

Strip edge trimming machine of the series DUO2000 integrated into a tube welding line (photo Ilta Inox, Italy)

• 8 •

Automotive industry

The suppliers of the automotive industry impose hig-her standards concerning the quality of strips and metal sheets which have to be reprocessed.

For the production of tubes, plain bearing bushes and for the car body construction it is important to treat the strip edges and if necessary to achieve a groove on the strip surface.

Often the slit edge has to be transformed into a func-tional edge. The burr has to be put off, a contour has to be chamfered at the edge and strip width toleran-ces have to be respected.

So more and more suppliers integrate a strip edging line into their production process.

For the production of cast aluminium parts such as cylinder heads, the edges and the surface of the workpiece have to be deburred and milled.

Here robotic deburring stations are employed.

Strip edging line of the series QUATTRO

• 9 •

Plain bearing bushes

Due to edge trimming the strip is perfectly prepared for the production of plain bearing bushes and half bearing shells. Even at a speed of 100 m/min (328 ft/min) edge trimming reduces the costs.

The line executes five operations: thickness and width

Deburring of die-casting

Aluminium cast parts can be deburred by means of robotic systems.

Precise and defined deburring is decisive e.g. for the machining of cylinder heads as die cast parts. The de-burred edges should be 0.3 to 0.5 mm (0.01" to 0.02") wide to guarantee a maximum size of the sealing sur-faces.

The robotic station is equipped with rotating power tools such as milling burrs and grinding pencils, grin-ding flap discs or brushes.

An integrated 3D measuring sensor for the calibra-tion of complete workpieces or individual contour elements checks the position of the workpiece during processing.

calibration, trimming of two chamfers at the upper and the bottom side and oil grooving.

It is possible to work from coil to coil, from slit strip packet to coil or – for long running times of the ben-ding and punching machine – from multicoil to spool coil. Equipped with NC technique, the line controls all operations electronically, even scrap marking with multiple axes.

Tool turret with three pneumatically powered milling spindles, a brush spindle and a 3D measuring sensor

CNC controlled strip edging and oil grooving line for the production of plain bearing bushes and half bearing shells

• 10 •

Strip edge trimming by metal-cutting

If the slit edge is the operational edge in the final pro-duct, the condition of the slit edge is inadequate for the down-stream operation.

The Julius system of strip edge trimming by metal-cutting strips the burr from the strip edge. The swarfs fall into a scrap conveyer and are removed from the manufacturing line.

This prevents any burr particles interfering in the pro-cesses e.g. stamping or profiling. Edging of strip by machining does not alter the material contrary to a rolling procedure. The structure of the surface is un-altered.

Precise tooling adjustments and intelligent tooling positioning allows production of complex bevels and contours without affecting the surface structure.

Strip edge trimming machines

Strip edge trimming by metal-cutting

One-sided edge machining of an aluminium strip

• 11 •Strip edge trimming by metal-cutting

• 12 •

Strip edging machines

The modular system

The edge trimming units can be combined flexibly and expanded or retrofitted any time due to the mo-dular concept.

In this way, a machine with one working station (UNO) can be extended to a machine with two (DUO), three (TRIO) or even more stations.

The module itself is composed in a modular method. All assemblies and components can be added and ex-changed in each module.

Each module incorporates 3 positions for tool or roll holders at each side. Tools and rolls can be adjusted and exchanged in any order.

By means of a programmable automatic opening the main supports and horizontal guides are lifted hy-draulically vs. pneumatically.

If the production speed is high and/or the swarf is thick higher energy is introduced into the process. A cooling and/or lubricating system will accomodate the higher strain.

The modular strip edge trimming machine can be combined with modules of strip surface treatment.

UNO DUO TRIO QUATTRO QUINTO

Strip edging machine of the series QUATTRO300 – here employed for the production of machine knives

• 13 •

Size of the machine (W/L)*

UNO: 700 mm × 760 mm (27.56" × 29.92")

DUO: 700 mm × 1,360 mm (27.56" × 53.54")

TRIO: 700 mm × 1,900 mm (27.56" × 74.8")

QUATTRO: 700 mm × 2,500 mm (27.56" × 98.43")

QUINTO: 700 mm × 3,100 mm (27.56" × 122.1")

* The machine width corresponds to a max. strip width of 80 mm (3.15"). The larger the strips are the wider the machine will be. The height of the machine is adapted to the strip running height.

Technical data

• strip width max. 2,000 mm (78,8")

• strip thickness 0.15–8 mm (0–0.32")

• contours: different contours (see here below)

• speed: up to 300 m/min (984 ft./min)

• strip material: all kind of machinable material

• automatic opening

• hydraulic and pneumatic lifting

• lubricating and cooling systems for tooling

UNO, DUO, TRIO, QUATTRO

Strip edging machine with laser altimeter. The TRIO machines strips with up to 9 tools.

Strip edging machine DUO2000 for the machining of strips with a max. width of 2000 mm. The DUO is often integrated into tube production lines to optimize the weld seam.

The QUINTO strip edge trimming machine works with up to 15 tools and achieves each contour required.

The strip edge trimming machine of the series UNO works with one tool each side. It is the smallest machine of the modular system being employ-ed for simple deburring of the strip edge.

round contours right angle different contours and bevels

• 14 •

Strip edging machines

For high stress processing – new generation

The strip edging machines of the series BKB/S are de-signed for high stress processing with high material removal and produce complex contours at the strip edge, respecting tight tolerances.

Thanks to a new conception of support adjustment, the swarf removal is optimized so that it is possible to process with thick swarf and to remove a maximum of material in one pass through.

The positioning of the hydraulic clamping system in bilateral guide rails and the use of further cylinders have improved the capacity with the result that the machine processes without vibration, even at high-stress operations.

DUO/S

• max. strip width 1,000 mm (39.4")

• max. strip thickness 4 mm (0.16")

QUATTRO/S

• max. strip width 2,000 mm (78.7")

• max. strip thickness 8 mm (0.32")

BKB/S

New conception of support adjustment

Strip edging machine of the series QUATTRO300/S for high material removal

• 15 •

For heavy duty

Large cross sections and high productivity impose heavy stresses on the machining of the edges.

The BKB/Kompakt is designed for maximum material removal at each tool, which ensures that even com-plex contours with wide bevels can be machined on strip with heavy cross sections or hard material.

The spacing of the tools is further apart widening the gap for easy flow of the heavy chips.

The machine is designed as a double unit so that rough machining is separated from the finishing section.

• strip width: max. 1,500 mm (59.1")

• strip thickness: 0.15–8 mm (0–0.32")

• contours: all contours and champfers


• strip material: all machinable materials

BKB/Kompakt

BKB/Kompakt

Strip edge trimming line of the series BHR/BKB/Kompakt with (from left to right): multicoil, decoiler, strip entering system, two compact strip edge trimming machines with up to seven tools each, S-bridel and dancer for strip tension reduction and recoiler (not on the picture)

• 16 •

Strip edging lines

The Berger Gruppe offers a big range of strip edge trimming lines.

Depending on the contour, the strip thickness and the strip quality, a DUO, TRIO, QUATTRO or QUINTO strip edge trimming machine is integrated into the line as main processing machine.

Thanks to the modular construction system it is pos-sible to compose different modules to a line or to retrofit modules subsequently.

The strip edge trimming lines can be equipped with:

• winding technology (see p. 28 et seq.)

• traverse winding systems (see p. 30)

• multicoil systems (see p. 31)

• strip tension technique (see p. 32 et seq.)

• levelling and brushing machines (see p. 34 et seq.)

• measuring technique and CNC technology (see p. 26 et seq.)

BHR

BHR/DUO80: strip edge trimming line with de-coiler with strip tension technique, flat levelling machine, vertical levelling machine, strip edge trimming machine DUO80, strip tension technique with S-bridle and dancer and re-coiler

• max. strip width 300 mm (11.8") (larger strip width on request)

• strip thickness 0.1–8 mm (0.0039"–0.32")


• max strip width 80 mm (3.15")

• strip thickness 0.1–0.8 mm (0.0039"–0.32")

• speed up to 300 m/min (984 ft./min)

• strip material: stainless steel

• type machining: deburring, round edes

• flat and vertical levelling

• traverse winding

• strip width for traverse winding: 3–50 mm (0.12"–2")

• spool coil weight up to 2 t

• 17 •

BHR/DUO: basic line with de-coiler, strip edge trimming machine of the series DUO and re-coiler

BHR/TRIO: basic line with de-coiler, strip edge trimming machine of the series TRIO, strip width measuring system and re-coiler

BHR/DUO: de-coiler, flat levelling machine, vertical levelling machine, DUO strip edge trimming machine, strip width measuring system, strip tension regulation with S-bridle and dancer, re-coiler

Deburring and simple strip edge trimming

The strip edge trimming line of the series BHR/DUO is designed for simple strip edge trimming.

Core machine of the line is the strip edging machine of the series DUO, which machines the strip edges with three tools at each side.

The line can be expanded subsequently to a strip edge trimming line of the series BHR/TRIO or BHR/QUATTRO with a TRIO or QUATTRO strip edging machine.

BHR/DUO

For a big range of contours

The strip edge trimming line of the series BHR/TRIO is designed for the machining of a big range of contours and bevels.

Core machine of the line is the strip edge trimming machine of the series TRIO, which machines the strip edges with nine tools.

The line can be retrofitted subsequently module by module to a BHR/QUATTRO or a BHR/QUINTO strip edge trimming line.

BHR/TRIO

Strip edge trimming line of the series BHR/DUO with (from left to right) de-coiler with strip tension technique, flat levelling machine, vertical levelling machine, DUO strip edge trimming machine, wipers, speed measuring system, strip tension technique with S-bridle and dancer, pneumatic guiding arm, re-coiler with traverse winding system, pressure arm

• 18 •

Strip edging lines

BHR/QUATTRO

For complex contours and bevels

The strip edge trimming line of the series BHR/QUAT-TRO is designed for chamfering complex contours and bevels event at large and/or soft strip material.

Core machine of the line is the strip edge trimming ma-chine of the series QUATTRO. The line can be retrofitted subsequently to a QUINTO strip edge trimming line.

Strip edge trimming line of the series BHR/QUATTRO, here with a vertical levelling machine

• max. strip width 150 mm (5.9")

• strip thickness 0.1–2 mm (0.0039"–0.08")


• strip material: stainless steel

• type of machinig: deburring, full-round edges, 90° and different bevels


• traverse winding

• multicoil

• strip width for traverse winding: 2–30 mm (0.08"–1.18")

• spool coil weight up to 2.5 t

• 19 •

Strip edge trimming line of the series BHR/QUINTO with de- and re-coiler, calibrating and levelling machines and S-bridle for strip tension regulation

Strip edge trimming line of the series BHR/QUINTO with (from left to right) de-coiler with strip tension technique and multicoil system, brushing machine, flat levelling machine, UNO deburring device with brushing machine and tension pad, two calibrating rolls, vertical levelling machine, QUINTO strip edge trimming machine, wipers, speed measuring system, enlarged S-bridle, dancer, pneumatic guiding arm, re-coiler with traverse winding system and turnstile

For all required contours and bevels

The strip edging line of the series BHR/QUINTO is the biggest t line of the modular series.

It machines all required contours and bevels – event at large and/or soft strip material.

BHR/QUINTO

Strip edge trimming machine of the series BHR/QUINTO with two calibrating rolls for strip thickness calibration

• max strip width 150 mm (5.9")

• strip thickness 0.7–3.5 mm (0.03"–0.14")


• strip material: bimetal

• type of machining: deburring, 90° and different bevels


• thickness calibration

• traverse winding and multicoil

• strip width for traverse winding: 3–30 mm (0.12"–1.18")

• spool coil weight up to 1 t

• 20 •

Strip surface machining by metal-cutting

Some operating processes require both an edge and a surface machining before transferring the strip downstream for additional processing.

For some manufacturing processes (such as the production of hollow profiles) a narrow band of the coating layer is removed to allow the base metal to weld onto itself.

This is an ideal application of the JULIUS grooving system. Scarfing single or multiple layers of the coa-ting from the surface optimizes the welding process.

Tool positioning is adjustable horizontally, vertically and angle incline, therefore flexibly meeting any spe-cification.

If the strip material is very hard or if a lot of material has to be removed from the top side of the strip edge, it is advisable to treat the strip edge vertically. In this case a grooving machine of the series TRINU is used (see picture at the right side).

Grooving machines

Grooving machines

Strip surface treatment with three tools

• 21 •Grooving machines

• 22 •

The Julius product range offers the modular series NU, DNU and TRINU as well as the groove dressing machine for the machining of the strip surface.

The machines of each series can be combined with elements of modular strip edge trimming.

Due to a compact construction method, the machines of the modular series can easily be integrated into existing lines or even retrofitted later as an extension.

NU

With one tool the grooving machine of the series NU removes a layer of coating from the strip surface. The tool can be adjusted vertically and horizontally.

The grooving machine of the series DNU is composed of two grooving modules installed serially.

The DNU/U machines two layers of coating from the bottom side of the strip. This unit is used when the groove has to be on the bottom side of the strip.

• groove width: 3 mm (0.12")

• groove depth: 0.1–0.2 mm (0–0.001")

• n° of grooves: 1/machine

• speed: 100 m/min (328 ft/min)

• strip material: all machinable material

• options: lubrication system, special tool holders, swarf blow process, swarf guiding system

Grooving machinesThe modular system

NU TRINU

NU, TRINU

Grooving machine of the series NU with one tool – here flanged at a TRIO strip edge trimming machine

Grooving machine of the series NU/S

Grooving machine of the series DNU/U with two tools – machining from below

• 23 •NU, TRINU

TRINU

The grooving machine TRINU has three tools arran-ged staggered or simultaneous.

• up to three grooves with a max. distance of 10 mm (0.39") (in case of three grooves) or 20 mm (0.79") (in case of two grooves)

• flexible triaxial angle adjustment

• flexible adjustment of groove width and depth

• max. groove width: 20 mm (0.79")

• groove depth: 0.01–1 mm (0–0.04")

• 3 grooves/machine


• material: all machinable material

• options: lubrication system, special tool-holders, swarf blow process and swarf guiding systems

Groove dressing machine

The groove dressing machine is employed when the cutting forces of the machining exceed the tensile strength of the strip. The cutting forces are dissipated into the machine.

• up to seven tool stations

• use of multi-tools

• reduction of strip tension to up to ⅕

• max. groove width: 40 mm (1.58")

• max. groove depth: 2.5 mm (2")

• max. number of grooves/machine: 16



• options: strip tension reduction for extreme strip cross sections, traverse winding and multicoil sys-tems, flat and vertical leveling machines, strip con-tour thickness and width measuring systems, swarf removal systems, brushing machines

Groove dressing machine with seven toolsTRINU grooving machine with thre tools

TRINU grooving line with de-coiler, strip feed, two grooving machines of the series TRINU, groove depth measuring system and re-coiler

• 24 •

Accessories

The modular system offers options to integrate further modules subsequently and covers changing demand perimeters.

Tool motor adjustment

The TRISTEP features a motorized adjustment of the tools on the non-operator side – and if desired also of the tools on the operator side. It can be retrofitted later.

The use of a TRISTEP system is recommended for strips with a width of more than 400 mm (15.75").

Rail system

A rail system allows the edge trimming machine to be rolled in and out a process line. This feature is used if and when the center of line of the strip changes.

This system is used for example for the production of tailored strips.

Automatic centering system

The strip centering control repositions automatically the strip and achieves an automatic following up of the machine.

The system is recommended for strips with a strip width of 1,000 mm (39.4") or larger.

For large strip widths

Flexible strip position

for strip edge trimming machines

Automatic centering system integrated into a DUO strip edge trimming machine

TRISTEP tool motor adjustment for the adjustment of the backward tools

Rail system, here with an UNO1000

• 25 •

Pinch rolls

When the strip machining is slight, the strip can be pulled by pinch rolls. It is necessary in case of loop operation.

The photo on the right shows a UNO strip edge trim-ming machine in front of a pinch roll unit.

Swarf shredder

The swarfs are fed into the shredder through a swarf hopper.

The shredder pulls in the swarf, shreds them and they fall onto a conveyer belt for removal.

Loop operation

Roller cage

A roller cage is flanged at a DUO strip edge trim-ming machine to support the strip when it leaves of a loop, preventing any fonding.

Swarf hopper

A swarf hopper is integrated into a QUATTRO strip edge trimming machine.

The swarfs are fed to a shredder through a swarf hop-per and finally removed over a conveyer belt.

Swarf removal

Pinch rolls flanged in front of an UNO strip edge trimming machine

Swarf hopper, integrated into a QUATTRO strip edge trimming machine

Swarf shredder

Roller cage, here flanged at a DUO strip edge trimming machine

• 26 •

Measuring technique and CNC technology

Julius offers strip edge and strip surface treatment by metal-cutting in a closed loop. Strip width, con-tour and residual wall thickness of the groove are measured and automatically restored to preset to-lerance ranges.

Different measurement systems can be integrated into strip edge trimming and oil grooving lines.

• strip width and thickness measurement by laser systems

• cameras for radii and angle condition

• measurement systems connected to a closed loop with CNC control or installed as a monitoring sys-tem with signal alarm

• measurement systems for the adjustment

• automatic deviation marking

Accessories

for strip edge trimming machines

Strip width measurement integrated into a strip edge trimming line

CNC controlled tools in combination with measuring technique

Strip width measuring with laser measuring system

• 27 •

Tool holders

JULIUS offers a big range of tool holders for different applications.

Due to the modular system it is possible to combine tool and roll holders flexibly and to exchange them at any time.

The angle of the tools can be adjusted continuous-ly. The spindle is adjustable free of clearance.

With the tool holder type WZWV 9013 pro it is possi-ble to regulate and readjust the angle of the tool du-ring the production process. In this way, the waste of material is minimized.

WZHH 2021, tool holder 90° with 15° setting angle

WZHH 2909, double tool holder 30°

WZWV 9010 with infinite-ly adjustable angle 0–90°

WZWV 9013 with infinite-ly adjustable angle 0–30°

WZWV 9015, 15° bevelled, for machining from above

Tool holder WZWV 9013 pro with angle adjustment during working process

Tool holders

• 28 •

Winding technology

Thick and/or wide strips have a stable cross section and easily absorb high strip tension.

Thin and/or narrow strips present a problem for recoi-ling or traverse winding

Depending on the previous processing the specific strip tension can rise considerably. The consequence is that either the strip cannot be machined or it can-not be coiled up to large diameters.

Julius provides traverse winding systems for a wide range of strip widths and thicknesses as well as multi-coil and strip tension regulation systems.

Strip regulation systems adapt the strip tension to the sensitive requirements of weak cross-sections.

The strip tensions and mass-forces which occur in the line are disconnected by a dancer. Different S-bridle systems and auxiliary drives reduce the strip tension to a tolerable level.

In this way, a strip processing line can machine a much larger range of strip widths, thicknesses and qualities.

The effectiveness of the line is improved substantially.

Picture at the right side: strip tension technique with S-bridle and dancer at the re-coiler side

Winding technology

Accessories

for strip edge trimming lines

Traverse winding at the re-coiler side: with fixed spool guides a high spooling exactitude is guaranteed.

• 29 •Winding technology

• 30 •

Traverse winding systems

Julius offers traverse winding systems at the re-coiler and the de-coiler side. Thus, it is possible to run in three ways – either from coil to spool, or from multi-coil to spool or from spool to spool.

Various traverse winding guides are proposed for different purposes.

The infinite variable spooling guide can be adjusted to different guide widths, therefore easily variable between different strip widths.

A fixed guide system is however recommended for weak cross sections.

The kinematic traverse winding guide keeps a con-stant distance to the coil optimizing in this way the accuracy of traverse winding.

• spool width: 100–400 mm (3.94"–15.75") (or according to agreement)

• spool weight: 1–2.7 t (or according to agreement)

• strip width for spooling: 3–80 mm (0.12"–3.15")


• alternatively fixed or variably adjustable traverse winding guides

• strip tension regulation with S-bridel and dancer

• two lateral guides for decoiling or with flanged adapter from cassettes

• re-coiling: - with and without lateral discs - on fixed core with and without lateral discs - from flanged adapter into cassettes

Accessories


Traverse winding system

Traverse rewinding of small strips with cassette and flanged adapter

Traverse winding on the decoiler side: Thanks to a special strip guide and a dancer even weak strip cross-sections can be traverse wound, here from cassette with flanged adapter

Traverse rewinding of wide strips

• 31 •Traverse winding system

MulticoilWith a multicoil system, several coils can be loaded and processed sequentially.

• width of the slit strip packet: 250 mm (9.84") (or according to agreement)

• slit strip packet positioned coil by coil at the strip center line at the push of a button

• weight of the slit strip packet: up to 2.5 t (or according to agreement)

Multicoil

Turnstile De-coiler with multicoil system

CNC controlled strip edge trimming and oil grooving line with multicoil system

• 32 •

Strip tension technique

Some operational treatment of the strip (e. g. machi-ning of complex contours or beveling) exerts excessive strip tension for save re-coiling of strip with weak cross sections.

If so, a S-block and a dancer will regulate the strip ten-sion to a tolerable level.

Thus, even thin and small strips can be machined and subsequently traverse wound or re-coiled to big diameters.

Accessories


De-coiler with dancer and flat levelling machine

• 33 •

S-block

The S-block either reduces the strip tension or ele-vates the traction during the rercoiling process. The strip tension is reduced at 1/5 or even less.

By adding further drums, the FZ reduction or as the case may be the FZ increase is adapted correspon-dingly. An automatic slip control is integrated into the S-block.

When the job is to machine the edges of strips with weak cross sections or to traverse wind a strip, the use of the S-block is strongly recommended.

Enlarged S-block for the machining of strips with sensitive coatings

S-block and dancer at the re-coiler side

It is possible to machine even strips with sensitive coating as Teflon for example thanks to the extended S-block (see picture here below).

Dancer

On the re-coiler side, the dancer displaces the scope of strip tension reduction. By this means, even strips with a very weak cross section can be machined and traverse wound. On the de-coiler side, the dancer dis-connects the strip tension from the coil body.

• 34 •

Levelling and brushing

machines

For numerous further operating processes (e.g. the machining of the edge and the surface) the strip must be flat and straight.

Edge bow, coilset and waviness must be adjusted to allow downstream operation to process optimally.

Julius provides different series for levelling, calibra-ting and cleaning metal strips.

All machines can be integrated into existing lines and be retrofitted at any time.

Flat levelling machine of the series DRAP Vertical levelling machine of the series HDR

Accessories


• 35 •

The vertical levelling machine of the series HDR elimi-nates the edge bow of strips. It is designed for narrow strips with a corresponding thickness/width ratio.

• strip width: up to 50 mm (1.97") with a corresponding thickness/width ratio

• 5 sets of vertical levelling rolls

• 5 sets of positioning rolls

The flat levelling machine of the series DR is used for slight levelling of strip material. It reduces the wavi-ness of the strip and removes the coil set.

• strip width: up to 1,500 mm (59.1") as a standard

• strip thickness: up to 6 mm (0.24")

• levelling rolls-Ø: variable depending on the strip thickness, number of levelling rolls: variable

• options: drive system, supporting rolls, pinch rolls, alligator system and wipers

The aperture roller of the series FW is used to calibrate the strip thickness with an accuracy of ± 0.005 mm (0.0002").

• strip width: max. 50 mm (1.97")

• strip thickness: max. 3 mm (0.12")

• drive: depending on requirements

The brushing machine of the series BS removes dirt particles from the strip surface. Both brushes can be adjusted and exchanged easily.

• brush width: 70–500 mm (2,76"–19.69")

• brush-Ø: 70–250 mm (2.76"–9.84")

• number of brushes: 2

• power: 0.5/0.75/1.5 kW

HDR

DR

FW

BS

Flat levelling machine type DR61 with alligator system

Two aperture rolls of the series FW50

Brushing machine of the series BS

Vertical levelling machine of the series HDR

• 36 •

The brand marks Heinz Berger, Hauschild, August Nell, Julius Maschinenbau, Werner Peters and LP-Laschet stand for highest quality in the field of machining and refining metal coils and tools, e.g. household and machine bla-des, cutting tools, surgical instru-ments, cast or forged tools. Their in-house robotic capabilities pro-vide solutions to automation and process integration tasks.

Trend-setting innovations in the fields of robotics and CNC ma-chines for grinding and polishing tools, as well as state-of-the-art technology for strip edge trim-ming by metal-cutting and surfa-ce finishing, are available for coil stock and tools that demand high quality.

The first automatic grinding machines from Berger in 1957, the development of the Julius edge trimming machine in 1980, the first CNC controlled double shaft polishing machine by Hauschild in 1987, the use of more than 300 robots for automating Berger

grinding machines since 2000, as well as Nell’s development of the BSM3000-CNC grinding machine for micro-grinding coil stock with camera control – all important milestones for the group and key driving forces for the metalwor-king industry.

Thanks to a broad product line, the synergistic effects in our engineering, R&D and produc-tion departments and a compe-tent customer service team, the Berger Gruppe provides com-plete solutions – particularly for custom requirements – all from a single source.

Heinz Berger Maschinenfabrik

Hauschild

August Nell jr.

Julius Maschinenbau

Werner Peters

LP-Laschet

... the Berger Gruppe!

Strong partners

under one roof ...

Kohlfurther Brücke 69 • 42349 Wuppertal • Germany

Tel.: +49 202 24742-0 • Fax: +49 202 24742-42

[email protected] • www.bergergruppe.de

strip processing machines by metal-cutting

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