With GROSSE JAC products, you benefit

from over 125 years of knowledge and ex-

perience of our Jacquard specialists. Our

experienced technicians are always at your

disposal as a constant source of knowledge

and support. On request, we provide turn-

key Jacquard installations including the har-

ness, gantry, design system and all accesso-

ries for Jacquard weaving. We also furnish

gantry plans and harness layout sketches

which you can use to construct the gantries

and harnesses yourself or have them fabri-

cated by an outside source. In addition, we

offer specialized training courses to provide

your technicians with the necessary know-

how. These are only some examples of our

services.

GITEC GmbH

Jerg-Wieland-Str. 5

89081 Ulm/Lehr

Germany

Phone: +49 (0) 731 718 762-0

Fax: +49 (0) 731 718 762-99

Email: info@gitec-jac.com

www.gitec-jac.com

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Electronic Jacquard machine

Service

EJP - 4 l All fields of application

l For machine sizes from 1344 to 7168 hooks

l Speed range depending on the machine size

up to 700 rpm

EJT - 4 l Technical execution for terry fabric

l For machine sizes from 1344 to 7168 hooks

EJS - 4 l For machine sizes from 1344 to 7168 hooks

l Speed range depending on the machine size

up to 1100 rpm

EJX - 4 l For machine sizes from 6048 to 24192 hooks

l Speed range depending on the machine size

up to 700 rpm

EJP-4 and EJX-4 for flat fabric

Upholstery fabric, home furnishing fabric,

mattress ticking, bed, table and hotel linen,

damasks, silk and lining, neckwear, labels

and narrow fabric etc..

EJT-4 for terry fabric

Highest quality standards are met thanks

to the use of patented technical features

especially designed for terry weaving.

EJS-4 for high speeds

For highest speed rapier and air jet weaving

machines. Special additional components

allow high speed weaving with maximum

prevention of wear and reading-in safety.

Even with high number of hooks highest

speeds can be run thanks to the arrange-

ment of the lifting knives in warp direction.

EJP-4 for plush

A simple pulley device permits the forma-

tion of the necessary 3 shed positions for

weaving double plush. A high number of

hooks allows for large pattern repeats to be

woven.

EJP-4 for carpets

Individual layout of the shed formation gear

combined with a special version of pulley

units permits the production of wire loom

and double carpets due to the solid con-

struction and flexibility of this machine.

l High speed plus maximum functional

reliability

l High load with minimum wear

l Simplest operation and maintenance

due to the open construction and easily

accessed magnet and hook modules

Controller C-20

The simple yet durable design uses a mini-

mum of moving mechanical components

and the new electronic control system is

comprised of modules that are designed

especially for the mill environment, thereby

permitting this machine to be used in all

fields of application.

Our standard series machine is distin-

guished by its flexibility, reliability and

functional safety under high load capacity.

EJP-4 is the result of further development

of our proven model EJP-2 high speed Jac-

quard machine. The reliable hook system

as well as the concept of mechanical and

electronic modules was maintained. The

new composite frame construction enables

a complete integration of the Jacquard ma-

chine head and its auxiliary components,

such as the monoblock angle gear. This

results in optimum stability of the Jacquard

machine. By using new materials and

advanced technology, it was possible to

perfect the EJP-4.

Main features

Our electronic high speed Jacquard ma-

chines are suitable for all types of modern

high speed weaving machines (air jet,

rapier, or projectile) for the production of all

types of Jacquard woven fabric. Jacquard

machines in special versions are available

depending on whether flat or pile fabric is

to be produced.

Fields of application

EJP - 4 E JT - 4 EJX - 4 EJS - 4

2 3

Magnet module MAP-4optimized by ASIC chips

Drive unit integrated into the machine construction

Arrangement of the lifting knivesin warp direction

Shed formation gear with two-sided curved disks

Oil or grease circulated lubrication system with computer-controlled lubrication system

Overpressure devicewith large-surfaced filter

Harness guidingwith optimum sliding features

Hook and magnet modules guar antee flexibility and easy maintenance

4 5

Description of Systems

Technical features

Shed formation

The shed is formed by curved disks (or

optionally by double curved disks in case of

the Model EJX-4) that have the precise lift

and dwell characteristics to suit the specific

shed geometry of each individual weaving

machine. The shed lifting elements of the

machine are maintenance free to a very

high degree or are connected to the central

lubrication. Since every lifting knife is

always of the same length regardless of the

number of hooks, there is the advantage

that even in different sized machines all ele-

ments and settings are always the same.

According to the loom width curved disks

are used with shed stop.

Maintenance

The sliding features have been improved

considerably by using high-tech material for

the hook and magnet modules and for bear-

ings so that the machine is maintenance

free to a very high degree. This is also

ensured, among others, by the use of a

computer-controlled central lubrication sys-

tem. The open design of the magnet and

hook modules permit quick and easy ac-

cess to the individual components, thereby

greatly enhancing operating convenience.

6 7

Method of operation

According to the double lift open shed prin-

ciple. Open shed formation by pulleys that

are readily accessed. V-shed can be adjusted

sensitively.

Hook system

The hook system was designed at the out-

set to withstand the demanding conditions

that are encountered in broad weaving. The

movement of the carbon fiber hooks is sup-

ported by a spring that is in contact with the

hook only in the reading-in phase. During the

upward and downward motion, however,

the spring is not under pressure which en-

sures free movement of the hooks.

Arrangement of the lifting knives

One of the major, patented engineering

differences is the lifting knives which run

in the warp direction. Regardless of the

number of hooks in the machine, every

lifting knife operates in conjunction with 64

hooks (resp. with 96 hooks in case of the

Model EJX-4). This means that every lifting

knife is of the same length and is subject to

the same level of stress regardless of the

machine size. In different sized machines

only the number of knives, rather than

the length of the knives, changes. Thanks

toThanks to this concept of construction

and due to the few moving parts a per-

fectly smooth operation of the machine is

ensured. The reading-in of the hooks in the

lower shed position results in less load on

the lower warp ends.

Modular construction

The module unit consists of a hook module

and a magnet module. Each module

contains 32 pattern points. Both modules

are made of plastic reinforced by carbon

fiber and can be easily separated. Two of

these module rows (resp. 3 rows in case

of machines in 6048‘, 10752‘ and 12096’

size) are placed one behind the other so

that each knife controls a total of 64 hooks

(resp. 96 in case of 3 rows). “Quick-change-

technology” offers the advantage that you

can specify the Jacquard machine with a

larger machine frame size without hav-

ing the full amount of hooks inserted. The

machine can be expanded later by installing

additional hook modules, if required. Or

conversely, the machine capacity can be

reduced by removing hook modules. This

offers flexibility with respect to investment

decisions, because future changes can be

taken into account.

Harness guiding

A simple, clearly structured harness course

guarantees optimum sliding features with a

vibration stable arrangement of the pulleys.

In addition, harness neck cords with plastic

combinations and plastic snap hooks permit

quick and easy mounting and change of

the harness. The glass grid, as a part of

the standard scope of delivery, ensures a

higher longevity.

a = Magnet moduleb, c = Hookd,e = Lifting knifef = Guide plateg = Pulley elementh = Leaf spring

Magnet module MAP 4 (ASIC)

In a customer specific chip (ASIC) which

was developed in conjunction with the

Fraunhofer Institute, all electronic compo-

nents for the control of the magnets were

combined. During the development of these

ASICs special attention was given to the

high requirements of the textile industry.

The data exchange is secured by a protocol.

Consequently, faulty data can be recognized

immediately. High reliability is achieved by

disconnection and short circuit recognition

for each magnet control and by surveillance

of the temperature and voltage of each

component. GROSSE succeeded with the

development of ASICs to reduce electronic

components in the Jacquard machine to a

minimum, which provides the customer

Benefits:

•Largecolourtouchscreen

display (15‘‘)

•Swiveling

•Easilydisplaced

•Includesallstandardinterfaces

for communication with looms

•Serial

•Parallel

•CAN

•Lowenergyconsumption

•Supportsallcommonlanguages

(and more)

•Desiredlanguagescanbe

integrated very quickly.

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EJS-4

The EJS-4 high speed Jacquard machine is

based on the Model EJP-4 and its proven

basic components. The EJS-4 is distin-

guished by special components which

permit the machine to achieve very high

speeds.

The open, easily accessed, modular construction guarantees simple operation and maintenance.

with increased reliability in the weaving mill.

This solution has proved most successful in

practice

By using a special gear technology a

counter- balanced sense of rotation of the

two shed formation gears is obtained. This

results in an equalization of the moving

parts, thereby ensuring a smooth, low

vibration performance of the machine with

optimum reading-in safety of the hooks.

9

C24 Contoller

•Desiredlanguagescanbeintegrated

very quickly.

•PatterninputviaUSB2.0ornetwork.

•Allloomfunctionsaresupported

•pickfinding

•changeofweftdensity

•modeofoperation(terryweavingetc.)

•Diagnosticprograms

•Comprehensiveself-testing

•Selfmonitoring

•displaythecurrentstatus

NEW

EJT-4

The terry Model of the electronic Jacquard

machine also has the same proven principle

of operation as the Model EJP-4. The

particular technical features of the EJP-4,

such as

- divided harness guiding board in con-

junction with - two-sided shed opening via

different curved disks guarantee perfect

pile loop formation and technically superior

fabric. A new special feature for pattern-

controlled selvedge ends with temporally

shifted shed opening has the additional

advantage that perfectly even selvedges

are achieved when weaving borders with

different weft yarns.

Terry specialists make use of the flexibility

of the EJT-4 which allows for the pile warp

ends and the ground warp ends to be

adjusted differently.

The harness guiding board is divided into

two sections,

- the front section for the pile warp and

- the back section for the ground warp.

Each section can be adjusted independently

Network

With the use of standardized network

protocols, various server and operating

systems can be employed. Consequently,

integration with existing network structures

ispossiblewithoutanyproblems.Naturally,

the new Windows-based GROSSE JAC

ARTISTWINdesignsystemcanalsobe

integrated. Therefore, all the tools you need

for the complete process, from design

creation to the finished fabric, are available

from one source.

Divided and adjustable harness guiding board (patented)

Technical data

Machine size Model Inside width Total weight

1344 2688 4032 5376 6048 * 7168 10752 * 12096*

EJP-4 EJP-4 EJP-4 EJP-4 EJP-4

EJT-4 EJT-4 EJT-4 EJT-4 EJT-4

EJS-4 EJS-4 EJS-4 EJS-4 EJS-4

EJX-4

EJX-4 EJX-4

650 1238 1826 2414 1826 3198 3198 3590

1430 2060 2390 2770 2920 3250 4200 4950

*) Three module rows

1 Jacquard machine2 Mounting frame3 Transmission gear

4 Jacquard gantry5 Machine foot6 Power supply

10 11

of one another in height and inclination. In

the upper shed the pile warp is positioned

above the ground warp, while in the lower

shed the pile warp is positioned under the

ground warp.

In case of corrections the C20 controller

offers the possibility of entering the actual

values regarding weft density, beat-up

distance and speed.