www.piezoproducts.com - Johnson Matthey Piezo ...
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
www.piezoproducts.com
PIEZOELECTRIC CERAMICS SUITED TO MEET YOUR NEEDS Since the 1970‘s we are developing and producing Piezoceramics and other Piezo products in high volumes for a wide range of applications. Our experience and ability for mass pro- duction of bending actuators and systems with Piezoceramics, mechanics and electronics, allow us to offer products of the highest quality combined with competitive prices. Our products are customized and well known for their long lifetime and reliability. We have produced and sold more than 100 million products worldwide. We are the leading manufacturer of Piezo bending actuators for different applications in a variety of markets. ALL FROM ONE SOURCE www.piezoproducts.com
THE PIEZO-EFFECT MOVES YOUR IDEAS In 1880 Jacques and Pierre Curie discovered that when deformed under mechanical stress, Below the Curie temperature, the materials show a spontaneous polarisation. This spontaneous quartz crystals became electrically charged – positively and negatively – on prism-shaped polarisation is caused by the displacement of ions of the elementary cell, resulting in the loss of surfaces. They called this reaction the piezoelectric effect. Above a certain temperature the centre of symmetry. The main areas of the positive and negative charges are no longer to be (called the Curie temperature) these kinds of materials possess a cubic elementary cell with found in the centre of the elementary cell of the crystal. The elementary cell possesses an electric a centre of symmetry. The main areas of the positive and negative charges are found in the dipole. The piezoelectric properties of the ceramics, important for applications, are only produced centre of the elementary cell of the crystal. The materials are paraelectric. There is no detec- by this polarisation process. In this case, the ceramics are exposed to a very strong electric field. table piezoelectric effect. SENSOR ACTUATOR deformed under mechanical stress, quartz crystals become electrically charged the same materials undergo dimensional change under the influence of an electric field
PIEZOELECTRIC PRODUCTS
FOR ACTUATOR AND SENSOR APPLICATIONS
BASIC MATERIALS BENDING ELEMENTS MODULES AND DEVICES
Plates Braille equipment Textile machine modules for:
Specially shaped parts Textile machines Jacquard machines
Hard disk drives Raschel machines
Valves Circular knitting machines (Sitex)
Micro fluidics Warp-knitting machines
Micro pumps
Dosing systems Ultrasonic atomizers for:
Gas flow controls Refrigerated cabinets
Switches Household appliances
Medical equipments Toys
Automotive applications Medical Inhalers
Greenhouses
Medical Devices BASIC MATERIALS Piezo ceramics in different shapes
ALL FROM ONE SOURCE
customized modules and devices with Piezo ceramics
as the core technology plus mechanics and electronics
customized bending actuators atomizing system module for
for different applications for medical devices single needle selection in
warp knitting machines
LIQUIFOG®
atomizing system, e.g.
for cooling counters module for
single needle selection in
BENDING ACTUATORS MODULES AND DEVICES circular knitting machines
WORKING
PRINCIPLE
PIEZO BENDING ACTUATOR PIEZO BENDING SENSOR
When two piezoelectric ceramic plates are Therefore, the Piezo bending actuator can be Piezo ceramic benders can also be used as Thus they are suitable for measuring big and
bonded together with a supporting material employed as a high performance and fast-re- sensors. Bending generates a charge/ a volt- small movements/ vibrations/ accelerations
and counter-actuated, this results in a pro- acting control element. Due to the high age on both ceramic layers. Parallel con- and energy harvesting. Our Piezo benders
nounced deformation of the composite simi- speed of deflection, productivity is higher necting both ceramics layers will add their usually have a working life of more than a
lar to the case of a bimetal. Its design enables compared to the use of electromagnets. As a charge. billion cycles.
deflections of several millimetres and forces result of its compact design, the Piezo bend-
up to several Newton and a short cycle time ing actuator takes up significantly less space.
of a few milliseconds can be achieved.
Piezoceramic
Carrier
The contraction of the ceramic when the operating voltage is applied results in deflection and force on
Piezoceramic the tip of the bending actuator. Or, if a force is applied to the tip, this generates an electrical charge.
OVERVIEW
BENDING ACTUATORS
Umax
A small selection of our actuators and their typical characteristic values
TYPE 1 2 3 4 5 6 7 8 9 10
Material 1)
M1100 M1100 M1876 M1100 M1876 M1100 M1876 M1334 M1100 M1334 0 V / Umax 0 V (DC)
Total length [mm] 50.0 49.0 47.4 47.4 47.0 36.0 32.5 25.0 12.5 9.0
1)
cf. Specification sheet piezoelectric Ceramics
Free length [mm] 38.0 38.0 38.0 38.0 38.0 30.0 27.5 18.0 9.5 6.5 2)
Unlimited displacement and blocking force will be determined at
Width [mm] 7.2 2.1 1.93 1.5 5.9 2.1 1.9 7.2 11.0 1.0 Umax at the specified free length and at 23°C ambient temperature
3)
The deflected bending actuator will be pressed back to zero position
Thickness [mm] 0.81 0.90 0.80 0.80 0.80 0.67 0.70 0.48 0.78 0.50 to determine Fb.
4)
Capacity is measured at 1V/1kHz and 23° C ambient temperature.
Total displacement [mm] 2) 2.1 2.0 2.2 2.0 2.8 1.5 1.4 0.07 0.14 0.07
5)
Recommended operating voltage is 0.8 x Umax
Blocking force on each side Fb [mN] 2), 3) 500 170 180 120 450 160 150 110 2300 130 6)
With a ceramic length of 10.5 mm and 12.5 mm
Capacity per ceramic side C [nF] 4)
45 11 20 10 58 11 13.5 35 18/23 6)
1.8/2.1 7) 7)
With a ceramic length of 7.7 mm and 9 mm
Operating voltage Umax [V] 5) 230 230 230 230 230 230 230 24 230 130 All values are approximate and no guarantee of specific technical properties.
Changes in the course of technical progress are possible without notice.
BENEFITS
PIEZOCERAMIC ACTUATORS
10.000
Performance features of
three different kinds of
Piezo actuators:
Stacks Comparison of values of
1.000 force and deflection of
stacks, actuators with NO REDUCED INCREASED
path transformations and COOLING OPERATING COSTS PRODUCTIVITY
Actuators bending actuators. The bending actuator Lower energy consumption Rapid positioning
100 with path produces no heat compared to the solenoid speed
transformation
10
Blocking force [N]
Bending REDUCED LESS SILENT
actuators
1
DOWNTIME SPACE OPERATION
Higher Compact construction of Most convenient and
0,1
Deflection [µm] reliability the bending actuators comfortable workplace
1 10 100 1.000 10.000
ACTUATORS AND SYSTEMS DIFFERENT
FOR TEXTILE MACHINES APPLICATIONS
Braille keyboard
module for single
needle selection in bending
warp knitting machines actuators
circular
knitting
machine
module for single needle Piezo inhaler LIQUIFOG®
selection in circular atomizing system,
knitting machines e.g. for cooling
counters
PIEZOCERAMIC BENDING ACTUATORS AND SYSTEMS PIEZOCERAMIC BENDING ACTUATORS
WITH ELECTRONICS AND MECHANICS AND ATOMIZERS
PERFECT
COMBINATION
Sitex circular knitting
module with electronics
FROM PIEZOELECTRIC CERAMIC ELEMENTS
TO PIEZOELECTRIC MODULES
Johnson Matthey Piezo Products is well We are able to correctly match ceramic and
known for its competence in development electronic parts together and to supply them
and production in all areas of electrical engi- as a module according to individual custom-
neering, electronics and mechanics. This en- er requirements. We can supply a complete
ables us to find Piezo solutions for all types system for control, actuator and sensor
of industry. modules. PIEZOELECTRIC CERAMICS
COVER A WIDE RANGE OF APPLICATIONS
The two key features used are deflection “Piezoelectric ceramic bending actuator“
and a controlling force which are applied component, mechanical parts and driving
variably in different actuator systems. We electronics. We can add a control computer
are specialized in piezoelectric modules. A to the system as an option. We work closely
bending element complete Piezo system – for example a Sitex with our customers to achieve the best possi-
protected by a cage module for textile machines – consists of the ble solution for their requirements.PIEZO APPLICATIONS –
MOVE YOUR IDEAS
TEXTILE MACHINE BRAILLE INDUSTRIAL MEDICAL
AUTOMOBILES AIRPLANES
INDUSTRY INSTRUMENTS AUTOMATION APPLICATIONS
As a control element and also Piezoelectric bending actua- Pneumatic valves such as for Piezo ceramic products have Our Piezo products are distin- Our Piezoelectric bending
in the manufacture of pat- tors control the pins in Braille electro-pneumatic position been used in the automotive guished by their high reliabil- actuators and atomizers are
terned fabrics for curtain and keyboards. This enables the regulators for opening and industry in different fields of ity, and are present even in perfectly suitable to work
lace and also our Sitex mod- blind and the partially sighted closing pipelines. application for many years. aircrafts, where the demands precisely and reliably in med-
ules for circular knitting ma- to „read“ the contents of a line. Our Piezo elements were first on the materials used are ical devices, in microfluidics,
chines used in cars 25 years ago. We very high. micro pumps and in aerosol
continue to work with innova- therapy. There is a wide range
tions and pioneering process of medical applications where
technologies to create new Piezoceramic systems offer
applications. the right solutions.HIGHEST QUALITY
MODULES AND DEVICES
Many decades of experience A market leader
in Piezo technology for bending actuators
HIGHEST ALL FROM HIGHEST Main products are Innovative spirit and
QUALITY ONE SOURCE PRODUCTIVITY Piezo bending actuators, significant portfolio of
Piezo systems developed Piezoceramics, electronics Fast handling and easy atomizers, modules and devices intellectual property
and produced at one site and mechanics maintenance
Standard products and engineering Over 100 million
capability for customized developments Piezo products produced
LONGER CUSTOMIZED From the initial idea through to final product, series production and long term partnerships
LIFETIME SOLUTIONS
Special Optimized for
coating your application ALL FROM
ONE SOURCE www.piezoproducts.comPhotos © Fotolia.com, Johnson Matthey, Karl Mayer Textilmaschinenfabrik GmbH,
Metec-AG, Pai Lung Machinery Mill Co., Ltd.
Johnson Matthey
Piezo Products GmbH
Bahnhofstrasse 43
96257 Redwitz
Germany
T +49 (0)9574 81 453
F +49 (0)9574 81 98 453
piezoproducts@matthey.com
www.piezoproducts.comYou can also read
