Picanol has developed the oscillating rotational motion of the rapier wheel generated by a simple, robust, three-dimensional crank system, ensuring reliability, and requiring no maintenance or adjustment.
The sley is driven by a set of complementary cams with cam followers on both sides of the machine. They run in an ion bath connected to the central lubrication system. The sley with the reed holder is perfectly balanced and provides a powerful beat-up over the whole weaving and ensuring less vibration.
When weaving heavy and densely beaten fabrics, the machines sley system has a strategic role. For this reason, Leonardo developed several sley drive units (two for narrow loom and three for double-width machine) fixed on the main cross bar and coupled to the connecting shafts. The optimized geometry of the kinematics, strengthening of the camshafts in the balancer and cam-reading shaft, centralised lubrication for the drive units all these help to guarantee big advantages in terms of stability, lower noise levels and low maintenance requirement.
Selvedge
Todays rapier weaving
machines are available with tucked or leno, with 2 or 4 leno threads. In multi-panel weaving, maximum of 5 panels can be woven.
Dornier offers revolutionary selvedge formation device with decisive advantages. The, 2-end full-turn leno type Moto Leno, controlled in direct relation with weave requirements, variations in pick density and fabric construction, is freely programmable. Warp end breaks in the selvedge area are significantly reduced. Based on Moto Leno, the modular designed Moto Eco double-disc leno is also available. While one leno forms the fabric selvedge, the second leno replaces the catch selvedge. All the functions are easily set directly on the machine display.
The inexpensive alternative to tucked selvedge - the 2-end full turn leno type Moto Leno with synchronous motor drive. Picanol has developed the unique ELSY full leno selvedge motion, electronically driven by individual steeper motors. The selvedge crossing can be programmed or the microprocessor independently of the shed crossing even while the machine is in operation. The earliest position for rethreading can be set by a simple push of a button, when the machine starts the selvedge system automatically returns to its original position.
In Suizer G6500, the electronically controlled selvedge-forming unit can be adjusted at the terminal while the machine is running. The selvedge forming units are separately driven and ensure clean selvedge formation. The timing of the shed closure for the left and right selvedges is freely programmable via the terminals.
Quick style change
The quick style change system, developed by several rapier weaving machine manufacturers in their own versions ensures quick style change (less than 30 min). This ultimately increases the productivity of the loom shed. The quick style change system is not just a machine set-up but also an integrated system that allows the movement of the preparation room of some operations normally done on the weaving machine. The knotting operations and the drawing-in of the warp can be done in the preparation department, thus improving the workload and avoiding longer machine downtime.
Leonardo is integrated with the "VQSC" Quick Style Change System, which ensures reduced machine downtime and the extra time needed to unload the machine, to adjust the setting and to load the new style as far as possible. Also the warp stop motion, frame, reed, and beam unloading/loading operation have been made far easier with the introduction of rational and reliable technical solution.
Picanol developed QSC, Quick Style Change System in which the style change is achieved by swapping the whole back part of the split frame, with the warp beam, the back rest and the supporting warp stop motion, the harnesses, and the reed. Additionally this unique system makes it possible to carry out the entire article related setting on the warp side, outside the weaving shed before the style change. This ultimately reduces the labour requirement and thus increases the loom efficiency.
Electronic control technology
The electronics of modern rapier weaving machine are based on multiprocessor architecture with 32-bit technology. Data transfer between the various sub units of the machine is via a CAN- BUS, permitting fast and reliable exchange of data both internally and externally. The terminal has a graphic display in which various functions of the warp let-off, cloth take-up, weft feeder, etc, can be programmed easily and. clearly. The modern electronics give the following advantages:
· Ease of operation.
· High fabric quality irrespective of speed.
· Pick density alterable while the machine is in operation.
· Immediate help trouble-shooting problem.
· Self-adjusting stop position of the machine.
· Microprocessor controlled central forced lubrication system.
· Storage and monitoring of all the production data, efficiently.
· Machine function control, pattern weave, warps tension, pick density.
· Pick finding control and the elimination of stop marks by means of pro-set programs.
· Control and report of style change timing.
· Quick control of the electronic functions (self diagnostics and auto check up) and monitoring of the machinery functions for protection.
· Bi-directional communication between the weaving machine and the central production computer.
· Speed set-up.
· Electronic weaving speed variation depending on the characteristic of the yarn being used.
· Control of warp let-off and fabric take-up.
· Electronic control of the filling tension.
· Transfer of setting and production parameters of a fabric style, to other machine with the help of memory cards.
In Picanol GamMax, most of the machine functions are digitally controlled. All the machine settings can be digitally stored and transferred. The electronic terminal on GamMax monitors and controls all machine functions. Its LCD screen has self-explanatory menus and enables the weaver to set the weaving parameters in a very user-friendly way. GamMax is also Internet- enabled. The GamMax terminal features wireless communication through a USB memory stick or key tag, permitting robust, flexible, handy and reliable operation.
Suizer G6500 offers "Smart Weave" - intelligent pattern data programming. "Smart Weave" offers fabric designer intelligent support in the preparation of weaves design and pick repeats. The G6500 control interface is a user-friendly, Internet-ready touch screen terminals. The logical structuring with self-explanatory Pictogram guides the operators to the desired function simply and with a minimum of keying.
In Leonardo, the computer system is based on the CAN-BUS system. This drives and controls all the main textile and mechanical function. With the CAN-BUS in mind, a new controller has been developed, called the FULLTRONIC. This co-ordinates all loom functions instant by instant, from the operating conditions of the various mechanisms to each individual response: heald movement, colour to be selected, warp tension, density of the weft in the fabric, plus the messages describing the status of the lubrication circuit. Monitoring takes place at a frequency of more than 700 messages/sec.
The Dornier rapier-weaving machine, type P5, has control cabinet with integrated CAN-BUS and various modules for start, stop, warp let-off and fabric take-up as well as start mark prevention. The Dornier Customer Service Department can directly access machine displays - trouble shooting online. The DoNet Global Communication Network offers quick location and transportation of setting instructions, remote diagnostics. Dornier offers Automatic Start-mark Prevention ASP: preventing starts mark at the source.
Machine main drive
The Dornier rapier-weaving machine is driven with a continuously running motor over a magnetic brake-clutch unit. Intelligent electronics monitor the acceleration time and control the exceptionally short brakes time. This guarantees the full dynamics of reed beat-up on the first pick, thus eliminating start mark.
Picanol has developed the Sumo main motor. It drives the weaving machine directly, without belt transmission or clutch and brake. The machine speed is controlled electronically, which considerably reduces the setting time. With the Sumo motor it is possible to continuously adapt the machine speed pick-by-pick to match the strength of the filling yarn. With the help of this system, it is no longer necessary to keep the machine speed continuously low if there is one weaker filling yarn in multi-channel weaving.
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