Abstract:
본 발명은 2개의 폴리에틸렌 파이프를 맞대기 융착에 의해 서로 연결하는 파이프 연결방법에 관한 것으로, 제1,2파이프(10, 20) 단부의 내외주면을 청소하는 클리닝 단계(S200)와; 상기 제1,2파이프(10, 20)를 클램핑에 의해 융착장치에 설치 고정하는 파이프 클램핑 단계(S300)와; 상기 제1,2파이프(10, 20)의 단부의 설치위치를 미세 조정하여 정렬하는 파이프 미세 정렬 단계(S500)와; 전열판을 이용하여 상기 제1,2파이프(10, 20)의 양 단부를 용융시키는 파이프 단부 용융 단계(S600) 및; 상기 제1,2파이프(10, 20)의 단부를 서로 맞댄 다음, 이 맞대어진 부분이 적절한 온도로 냉각될 때까지 상기 제1,2파이프(10, 20)에 압력을 가하여 상기 제1,2파이프(10, 20)가 가압된 상태로 계속 유지되도록 함으로써 용융된 단부가 접합되도록 하는 파이프 접합 단계(S700)로 이루어지고, 상기 파이프 접합 단계(S700)에서 상기 제2파이프(20)에 가해지는 압력은 상기 제1,2파이프(10, 20)의 접합부분에서의 비체적의 변화를 추종하도록 제어되는 것을 특징으로 하며, 이러한 구성에 의해 본 발명은 기계적으로 더욱 강건하면서도 크랙의 성장을 저지할 수 있는 폴리에틸렌 파이프 융착이 이루어진다.
Abstract:
Die vorliegende Erfindung betrifft eine Vorrichtung zum Ultraschallverschweißen von mindestens zwei Materialbahnen (2) mit einer Ultraschallschwingung (1) anregbaren Bearbeitungssonotrode (3), einem Bearbeitungsgegenwerkzeugund (4) einer Materialbahnführung, die derart ausgelegt ist, dass die Materialbahn (2) zwischen der Bearbeitungssonotrode (3) und dem Bearbeitungsgegenwerkzeug (4) hindurchgeführt werden kann, bei der eine Einrichtung zum Erwärmen (9,10) zumindest einer Materialbahn (2) vor dem Verschweißen vorgesehen ist. Um eine Ultraschallschweißvorrichtung (1) zur Verfügung zu stellen, die die genannten Nachteile vermeidet, und dennoch eine hohe Verarbeitungsgeschwindigkeit zur Verfügung stellt, wird erfindungsgemäß vorgeschlagen, dass die Einrichtung zum Vorwärmen (9,10) zumindest einer Materialbahn (2) eine mit einer Ultraschallschwingung anregbare Vorwärmsonotrode (9) aufweist.
Abstract:
According to an aspect of the invention, a method of bonding a connector (3) to a first object (1) comprises • - providing the first object (1) with a first opening (11), the first opening being a through opening; • - providing the connector, the connector being separate from the first object, the connector comprising a thermoplastic material; • - arranging the first object and the connector relative to one another so that the connector reaches from a proximal side through the first opening; • - using a source (6) of mechanical vibrations to generate vibrations, and applying the vibrations and mechanical pressure to the connector until, under the effect of the vibrations and the pressure, a flow portion of the thermoplastic material is liquefied and caused to flow sideways radially into an open space; and • - removing the source of the vibrations and causing the liquefied thermoplastic material to re-solidify; • - wherein after the step of removing, the connector comprises a foot portion, a head portion (31), and a shaft portion (32) between the foot portion and the head portion, the shaft portion extending along an axis through the first opening, and thereby securing the connector to the first object.
Abstract:
Bonding a second object (2) to a first object (1). The second object (2) comprises a thermoplastic material, and the first object (1) comprises a first object material comprising an at least partially cross-linked polymer or prepolymer. The bonding method comprises the steps of: pressing the second object (2) against the first object (1) and coupling energy into the second object (2) until the thermoplastic material is at least partially liquefied and the first object material in a vicinity of an interface to the thermoplastic material is above its glass transition temperature, and until the thermoplastic material is caused to penetrate into at least one of cracks (7), pores (5, 5.1) and deformations of the first object (1) material, and; letting the thermoplastic material re-solidify.
Abstract:
Die Erfindung betrifft ein Verfahren zum Fügen von Kunststoff-Metall- Hybridbauteilen, bei dem ein Metallbauteil (3) in einem Aufheizschritt aufgeheizt wird und in einem Fügeschritt ein Kunststoffbauteil (9) mit dem aufgeheizten Metallbauteil (3) in Kontakt gebracht und durch Aufschmelzen im Kontaktbereich mit dem Metallbauteil (3) zusammengefügt wird, wobei das Metallbauteil (3) in dem Aufheizschritt auf eine Temperatur oberhalb einer festgelegten Fügetemperatur aufgeheizt wird, in einem nachfolgenden Abkühlschritt abkühlt, in welchem die Temperatur des Metallbauteils (3) mittels wenigstens einer Temperaturmessvorrichtung erfasst wird und bei Erreichen der festgelegten Fügetemperatur der Fügeschritt ausgeführt wird. Die Erfindung betrifft weiterhin eine Vorrichtung zum Zusammenfügen eines Metallbauteils (3) und eines Kunststoffbauteils (9) mit wenigstens einer Aufnahme (2) an einem Aufheizort, in welche das Metallbauteil (3) einlegbar ist und mit einem beheizten / beheizbaren Heizstempelelement (4), das mittels eines Aktors (5) zum Zweck der Aufheizung des Metallbauteils (3) in Kontakt mit dem Metallbauteil (3) bringbar ist und mit einer Transfervorrichtung (10), mittels der das über eine vorbestimmte Fügetemperatur aufgeheizte Metallbauteil (3) an einen Fügeort überführbar ist und mit einem am Fügeort angeordneten Fügestempel (7), der mittels eines Aktors (8) angetrieben ist und an/in dem das Kunststoffelement (9) haltbar ist, insbesondere durch Unterdruck und mit einer Temperaturmessvorrichtung, mittels der die Temperatur des Metallbauteils (3) erfassbar ist, insbesondere während des Abkühlens am Fügeort erfassbar ist und mit einer Steuerung, mittels welcher der Aktor (8) des Fügestempels (7) in Abhängigkeit der erfassten Temperatur, insbesondere bei Erreichen / Unterschreiten einer festgelegten Fügetemperatur ansteuerbar ist.
Abstract:
The method and apparatus are applicable in production of cans, bottles and more. It has enhanced weld quality, improved appearance and low waste. Laminated foil 2 moves with relatively constant speed and is formed around the mandrel 1. Over the foil edge 7 is placed compressing/cooling bar 10 having cooling channel 11, and over second edge 8 - compressing/cooling bar 12 having cooling channel 13. The profile of mandrel 1 in the heating area of overlapped edges 7 and 8 of foil 2 has step 5 to form cavity 6 between edges 7 and 8. The heating unit 3 is a nozzle supplying hot air into cavity 6. Melting of the foil 2 is limited only to the area, which is not in contact with compressing/cooling bars 10 and 12 and the mandrel 1. During further movement of foil 2 due to change in profile of mandrel 1, transforming into plane 9 the end 8 is lifted up while pressed the end 7 and the two together in compressing/cooling bar 10. After welding area there is cutter 4 to cut the tube into tubular bodies.я
Abstract:
The invention relates to a process for heated tool butt welding of polypropylene pipes. The novel welding process is performed with PP-HM polypropylene according to EN 1852- 1:1997/A1. The novel welding process is in part performed according to DVS 2207-11:1999. The novel process results in an improved stability of the welding joints.
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:
The invention concerns a method for butt welding parts in plastic material(s), consisting in correcting on the basis of room temperature taken (45) in the surroundings of the parts (7,9) at the time of welding, at least one of the following parameters: contact and/or welding pressure of the parts, electric power to be supplied to the means (13, 17) displacing said parts, relative displacements of said parts, time required to obtain seams at the ends of the parts during the phase of heating the parts.
Abstract:
According to an aspect of the invention, a method of anchoring a connector (3) in a first object is provided, wherein the first object is a lightweight building element having a first outer building layer (1.1) and an interlining layer (1.3), wherein the first outer building layer is thinner and more dense (and generally also harder as far as the - average - hardness of the interlining layer is defined) than the interlining layer, and wherein the connector comprises thermoplastic material in a solid state, the method comprising : - Bringing a distally facing coupling surface portion of the connector into contact with an attachment location of the first outer building layer; - displacing a portion of the first outer building layer at the attachment location with respect to the interlining layer by applying a first pressing force to the first outer building layer and causing the first outer building layer to be pierced (especially as a result of the application of the first pressing force) at the attachment location or in a vicinity thereof; - Applying a second pressing force to the connector and transferring energy to the connector, and thereby moving the connector into a distal direction relative to the first object until a flow portion of the thermoplastic material has liquefied and flown to interpenetrate structures of the interlining layer; - Stopping the energy transfer and allowing the flow portion to re-solidify.