Abstract:
An electrically fusion-bonded joint includes a body proper and is provided with a heater including a magnetic alloy piece having a fixed degree of Curie temperature at a portion in the vicinity of the body proper surface to be bonded so that the surface of the heater is exposed outside from the body proper surface to be bonded. When the body proper surface to be bonded is brought into contact with the surface of a member to be bonded and high frequency current is supplied to the magnetic alloy piece by electric induction, the magnetic alloy piece generates heat and the temperature thereof is kept at a fixed degree of Curie temperature by temperature self-control function thereof. Accordingly, when a Curie temperature is set at a degree for fusion-bonding, the body proper surface and the member to be bonded are fusion-bonded.
Abstract:
The invention relates to a method and a device for the welding of at least one element such as a tube, by means of an ultrasound welding device, comprising at least one sonotrode (116), a converter (112) and a counter electrode (118) to the sonotrode. An electrical motor drive is used to permit a precise adjustment of the sonotrode with relation to the counter electrode with simultaneous defined setting of forces.
Abstract:
Die Erfindung bezieht sich auf ein Verfahren sowie eine Vorrichtung zum Verschweißen von zumindest einem Element wie Rohr mittels einer Ultraschallschweißvorrichtung umfassend zumindest eine Sonotrode (116), einen Konverter (112) sowie eine der Sonotrode zugeordnete Gegenelektrode (118). Um präzise die Sonotrode zu der Gegenelektrode bei gleichzeitiger definierter Einstellung der Kräfte verstellen zu können, wird ein elektromotorischer Antrieb verwendet.
Abstract:
The object of this invention is to provide a fusion splicer, including a seating unit (100) to seat thereon objective materials to be fused, a heating unit (200) including a heating plate (210) to emit heat, a seating-unit feeder (300) to feed the seating unit along a predetermined course, a heating-plate feeder (400) to feed the heating plate, so that the heat of the heating plate is applied to the objective materials seated on the seating unit, when the seating unit is moved to a predetermined position, and a control unit (500) to control operation of the heating unit, the seating-unit feeder, and the heating-plate feeder. The fusion splicer prevents a worker from getting burned by heating rods, cools fused objective materials to shorten a working period, and automates a working process by controlling the fusing period and temperature.
Abstract:
A method and apparatus (10) are provided for dynamically bonding plural workpiece layers (20, 22) together. The apparatus comprises: a first assembly (30) including a rotatable element (32a, 32b) having an outer circumferential portion (34a, 34b) adapted to engage one of the workpiece layers; a second assembly (50) including an anvil roll (52) adapted to engage another of the workpiece layers and defining with the rotatable element a nip for receiving the workpiece layers; a drive mechanism for effecting rotation of the rotatable element and the anvil roll; and servo motor apparatus (80) for applying a predefined force to at least one of the rotatable element and the anvil roll so as to bias the rotatable element and the anvil roll together. Further provided is a control system (90) coupled to the servo motor apparatus for varying the force applied by the servo motor apparatus to the at least one of the rotatable element and the anvil roll such that the outer circumferential portion of the rotatable element and the anvil roll engage and bond together predefined portions of the plural workpiece layers passing through the nip (60).
Abstract:
For weld bonding polymeric components, a bond monitoring device is utilized to sense emissivity from a bonding site to preferably determine the temperature of the material at the surface of the bonding site. The bond monitoring device preferably comprises an infrared detector or pyrometer that determines the temperature at the surface of the bonding site by sensing the infrared radiation, which information is used to control current generation. The current generation device preferably comprises a radio-frequency current generator to create a magnetic field within a magnetic flux concentrator. The present invention is particularly applicable to weld bonding of tubular type components, such as may be used to make up a medical catheter lumen, because a heatable mandrel can be inserted within a plurality of components having at least adjacently positioned portions that are to be weld bonded together.
Abstract:
A method for butt welding polyethylene pipes (1, 2) and/or fittings, wherein ends of the pipes (1, 2) and/or fittings to be welded together are heated by pressing the ends with a particular heating pressure and for a particular heating time against a welding mirror brought to a welding mirror temperature, wherein the heated ends of the pipes (1, 2) and/or fittings are pressed against each other with a particular welding pressure, while the welding pressure is higher than 200 kPa, and the welding mirror temperature T is lower than 210°C.
Abstract:
Die Erfindung bezieht sich auf ein Verfahren zum Verschweißen oder Verformen von einem Werkstück, wobei zum Bearbeiten des Werkstücks auf dieses eine Sonotrode einer Ultraschweißvorrichtung abgestützt und in ihrer Schwingungsamplitude verändert wird. Um eine Optimierung des Schweißens zu erzielen, wird vorgeschlagen, dass während einer vorgegebenen Zeit tx die Schwingungsamplitude einem vorgegebenen Verlauf folgend reduziert wird, nach der Zeit tx mittelbar oder unmittelbar ein charakteristischer Parameter des Werkstücks gemessen wird und anschließend in Abhängigkeit vom Wert des gemessenen Parameters die Sonotrode bei vorgegebener konstanter oder im Wesentlichen konstanter Amplitude über eine Zeit ty Ultraschallenergie auf das Werkstück überträgt.
Abstract:
The aim of the invention is to produce mitre-welded profiles (1, 2, 3, 4) or profile frames. A friction welding unit is used for the friction welding joining. Open and closed frame profiles can be produced by means of said unit. In a special embodiment, all mitre joints are simultaneously produced in a very short cycle time and with very low welding waste in a multiple-head friction welding device.
Abstract:
The invention concerns the laser treatment (2) of a material in the form of a strip (1), comprising at least a layer (10) of material M absorbing the laser radiation energy, to bring at least said layer to the temperature required for performing said treatment. The invention is characterised in that for each new material to be transformed, it consists in: a) first, elaborating the spectral curve Ai of said layer (10) of material Mi, so as to determine a frequency spacing (106) corresponding to an absorption peak (101); b) selecting said laser (2) among lasers whereof the beam frequency, or corresponding wavelength, is adjustable on the frequency domain (102) comprising at least said frequency spacing (106); c) tuning said laser frequency on a frequency nu w (103) of said selected spacing to reach said temperature and perform said treatment in a predetermined time interval.