摘要:
A method of construction of a box like structure formed from a number of panels (2, 3), each panel having an inner and an outer surface, comprises positioning and orientating at least two panels with respect to each other to form a corner (14) and then fitting a corner section (12) to the corner to hold the panels in position with the edges of adjoining panels together. The panels are then fixed and sealed together along the corner, and the steps repeated until the box like structure is completed.
摘要:
A weldable workpiece (16) prepared by depositing on a surface of the workpiece, an absorber dye (20) possessing strong absorption and a high extinction coefficient. The dye is deposited at a uniform density and thereby has the capacity to convert inbound radiant energy over about 0.1 J per square millimeter into thermal energy via vibronic relaxation and exothermic decomposition. In optical applications, the workpiece forms welds of high photopic and optical transmission. A method for preprocessing the workpiece describes steps for selecting polymers, dyes and vehicles.
摘要:
A first and a second object (1 and 2) are joined with the aid of a joining element (8) comprising at least in the region of its distal and proximal end (8.1 and 8.2) a thermoplastic material. Two blind holes (5 and 6) facing each other are provided in the two objects (1 and 2) and the joining element (8) is positioned in the blind holes such that its distal and proximal ends (8.1) are in contact with the bottom faces of the blind holes and such that there is a gap (9) between the two objects (1 and 2). This assembly is then positioned between a support (3) and a sonotrode (4). The sonotrode (4) and the support (3) are forced towards each other, while the sonotrode (4) is vibrated, thereby liquefying at least part of the material having thermoplastic properties, there, where the joining element ends (8.1 and 8.2) are pressed against the bottom faces of the holes (5 and 6) and allowing the liquefied material to infiltrate into pores of the hole surfaces or unevennesses or openings provided in the hole surfaces, such anchoring the joining element ends (8.1 and 8.2) in the objects (1 and 2). For achieving suitably similar anchorage qualities at the two joining element ends (8.1 and 8.2), the distal end (8.1) of the joining element (8) has a smaller face area and comprises less thermoplastic material than the proximal end (8.2) of the joining element.
摘要:
A first and a second object (1 and 2) are joined with the aid of a joining element (8) comprising at least in the region of its distal and proximal end (8.1 and 8.2) a thermoplastic material. Two blind holes (5 and 6) facing each other are provided in the two objects (1 and 2) and the joining element (8) is positioned in the blind holes such that its distal and proximal ends (8.1) are in contact with the bottom faces of the blind holes and such that there is a gap (9) between the two objects (1 and 2). This assembly is then positioned between a support (3) and a sonotrode (4). The sonotrode (4) and the support (3) are forced towards each other, while the sonotrode (4) is vibrated, thereby liquefying at least part of the material having thermoplastic properties, there, where the joining element ends (8.1 and 8.2) are pressed against the bottom faces of the holes (5 and 6) and allowing the liquefied material to infiltrate into pores of the hole surfaces or unevennesses or openings provided in the hole surfaces, such anchoring the joining element ends (8.1 and 8.2) in the objects (1 and 2). For achieving suitably similar anchorage qualities at the two joining element ends (8.1 and 8.2), the distal end (8.1) of the joining element (8) has a smaller face area and comprises less thermoplastic material than the proximal end (8.2) of the joining element.
摘要:
Die Erfindung betrifft eine Laserstrahlbearbeitungsvorrichtung zum Fügen von Werkstoffen, mit einem Handgerät, das ein Gehäuse (3) und eine in dem Gehäuse angeordnete Fokussieroptik (6) umfasst, wobei die Fokussieroptik (6) mit Laserstrahlung (5) aus einer externen oder internen Laserstrahlquelle beaufschlagbar ist und diese Laserstrahlung in einen Fügebereich fokussiert, und wobei eine Zuführung für einen drahtförmigen Zusatzwerkstoff (11) in den Fügebereich vorgesehen ist. Eine manuelle Bearbeitung komplexer Werkstücke wird ermöglicht, indem das Gehäuse auf der dem Fügebereich zugewandten Seite eine auswechselbare Arbeitsspitze tragt, die eine Austrittsöffnung für die Laserstrahlung aufweist, und die Zufuhrung in die Arbeitsspitze integriert ist.
摘要:
The invention relates to a method for producing a box-type van body (1) for transport vehicles. A multi-layer flat part (9) substantially consisting of thermoplastic material has a supporting center (7) and covering layers (8) extending from both sides thereof. According to the method, the flat part, whose surface corresponds to at least two adjoining side walls of the van body (1), is heated in substantially linear zones which are defined by the edges of the adjoining side walls (2, 3) of the van body (1). It is then folded in these zones. The flat part (9) is formed by a plurality of sandwich boards (6) which adjoin at the small faces thereof and are joined in a thermoplastic manner. A box-type van body (1) for transport vehicles produced according to said method has integral walls produced from the flat part (9) which is shaped in a thermoplastic manner. Said walls adjoin at least in one circumferential direction of the van body (1) and form an at least angular or V-shaped partial van body (1). The adjoining edges of said walls and optionally of additional walls are especially joined in a thermoplastic manner.
摘要:
A cabinet for a refrigerator is formed from a twin sheet thermoformed panel (1) divided into a plurality of wall sections (8, 9, 10) by seams (6) where the twin sheets (2, 3) contact. The panel is folded to form the rear (10) and two side walls (8, 9) of a refrigerator cabinet, and top end cap and a base plinth are fitted to retain the walls in position. Refrigeration system components are carried on the base plinth. The walls (8, 9) and back (10) are secured by having their upper and lower edges (25, 30) fitted within peripheral channels (28, 29) on the top end cap (20) and the base plinth (21). Additionally they may be further secured by fusing contacting portions (65, 76) of the inner sheet of the panel in the region adjacent folded seams (6). The panel is preferably filled with rigid insulating foam while still supported on the thermoforming mould. The seams (6) are preferably provided on the back face (61) of the cabinet, spaced from the corners between side and rear faces, providing improved aesthetics with the fold lines hidden. An improved heater for softening seams between wall sections is disclosed.
摘要:
L'invention concerne un procédé de fabrication de sacs à fond plat, caractérisé en ce qu'il comprend les étapes consistant à :
conformer un tube (14) avec une première feuille (10) ; acheminer une deuxième feuille (20), pliable à température ambiante, à une extrémité du tube (14) à plat et perpendiculairement à l'axe du tube (14) ; et attacher, à cette extrémité du tube (14), la deuxième feuille (20) pour former le fond (31) plat d'un sac (30), sans plier la première feuille (10).
摘要:
An improved method of friction stir welding is based on enhanced flow of plasticised material both perpendicularly and vertically to the longitudinal extension of the adjacent assembled members by exposing the created plasticised material to a perpendicular pressure along the surface of the members and causing simultaneous material flow along the probe pin in the vertical direction allowing the plasticised material to solidify behind the probe. A non-consumable probe (1) is provided comprising a concave bottom part (23) with an interchangeable pin (24) having surface of threaded configuration and in a preferred embodiment comprising two or more laterally protruding blades.