摘要:
Apparatus for bending rod-shaped material to form concrete-reinforcement elements, having a frame (3) for supporting a material feed device (4) and having a bearer for bending members, which bearer is mounted on the frame so as to be rotatable about the axis of feed, is adjustable relative to the frame and is constructed as a material supporting table (10) which is adjustable in a predetermined angular position relative to the frame, on which material supporting table a cutting device (8) is provided upstream of the bending members (15,16) in the material feed direction for cutting off the rod-shaped material from the line of material after the bending operation.
摘要:
A method and apparatus for fabricating double-layer, welded grid bodies which consist of grids located opposite one another and web wires holding these grids apart at a distance, in which method and installation, to fabricate grid bodies in the form of annular sections, the two grids, at a mutual distance corresponding to the desired thickness of the grid body, are moved forwards concentrically to one another and in a vertical position along concentric circular feed paths, and, after the web wires, fed from the outside of the path, have been welded, preferably in pairs, to the grids, the finished grid body is removed from the outside of the path.
摘要:
A method and installation for feeding longitudinal elements of round or flat material to a welding machine (41) for grates or gratings, in which method the longitudinal elements (L), cut off from at least one line of longitudinal-element material after straightening of the same, are arranged in a group with selectable spacing, without longitudinal displacement, in the direction transverse to a push-in line (S) to the welding machine (41), are secured in place by a, for example magnetic, holding force and are moved essentially continuously into the push-in line, and in which arrangement the front ends of the longitudinal elements are mutually aligned before delivery of the longitudinal elements to the welding machine.
摘要:
In a device for heat-treating, in particular annealing, a continuously advanced metal wire, a heating chamber (1) which is substantially closed on all sides and whose wall has entry and exit openings (9) for the wire (8), which is wound in a multiplicity of adjacent windings around the two deflection drums (5), is arranged between two wire deflection drums (5) which are rotatably mounted at a distance from one another and axially parallel and have discrete wire guiding grooves (6) on their shell surfaces, at least one of the two deflection drums (5) being driven by a motor and heating elements (10) being arranged in the heating chamber (1) along the two groups (8a, 8b) of wire lengths passing back and forth through it (FIG. 2).
摘要:
In an apparatus for feeding self-hardening hot rolled wires from supply reels to a consumer and for straightening the wires, in each feed path there is a rotor-type straightening device (3) with a straightening rotor (3b) deflecting the wire (1) radially between two fixed wire guides (3a) and rotating at high speed; the wire forms loops (12, 16), in front of and behind the rotor-type straightening device (3), the front loop (12) having assigned to it a sensing means (5, 8, 10) which switches off the rotor-type straightening device (3) when the length of this loop falls below a minimum value, while assigned to the rear loop (16) are two switches (18, 19) which, when a maximum or a minimum permitted length of this loop is reached, control the rotor-type straightening device (3) so as to correct the loop length.
摘要:
Double-spot welding machine for producing wire grids (G), having welding lines (S.sub.1, S.sub.2) of top and bottom electrodes (2, 3), which welding lines (S.sub.1, S.sub.2) are arranged at a mutual distance apart in a longitudinal wire advance direction and run transversely to the longitudinal-wire advance direction. A cross-wire feed apparatus (9) feeds two cross wires (Q.sub.1, Q.sub.2) along two insertion lines (E.sub.1, E.sub.2) arranged in front of the welding lines (S.sub.1, S.sub.2) at their predetermined distance from one another. A cross-wire transfer apparatus (10) transfers the cross wires (Q.sub.1, Q.sub.2) from the insertion lines (E.sub.1, E.sub.2) into the welding lines (S.sub.1, S.sub.2). The longitudinal wires (L) are advanced to the welding lines (S.sub.1, S.sub.2) and the welded wire grid (G) is pushed out of the welding lines (S.sub.1, S.sub.2). A holding arrangement (15, 18) holds the cross wires (Q.sub.1, Q.sub.2) in interengaged position in recesses (13) on support arms (12) which are displaceable relative to the longitudinal wires (L) during the transfer from the insertion lines (E.sub.1, E.sub.2) into the welding lines (S.sub.1, S.sub.2). A control device (C) controls raising and lowering of one electrode row per welding line (S.sub.1, S.sub.2) in cycles, as well as feeding, transfer and advance devices for the longitudinal and cross wires, in synchronism, but not necessarily at the same speeds, or time intervals.
摘要:
Disclosed is a machine for bending rod-shaped material in two directions, comprising a rotable plate (5), fitted with a centrally positioned mandrel (12) and an eccentrically positioned bending tool (13), and a fixed, adjustable holder (15; 17). The plate is mounted coaxial to a housing (1) which is in turn mounted to rotate in a fixed support about an axis (X--X) (4). The plate can be turned by means of a rotary drive (18) mounted on the housing. The holder is positioned eccentrically on the housing and can be brought by means of the rotary drive (18) up against the material to be bent.
摘要:
A welding machine for manufacturing wire nets from mutually perpendicular longitudinal and transverse wires welded at the points of intersection comprises a device for feeding the longitudinal wires in a horizontal welding plane, two devices for simultaneously inserting two transverse wires (Q,Q'), arranged at equal distances on either side of insertion lines (K,K'), a welding electrode arrangement for carrying out two-point welding in the direction of the longitudinal wires, and two feeder arms (8,9) for transferring the transverse wires from the insertion lines to the welding lines (S, S'). The feeder arms are fitted with clamping devices (11,12) for the transverse wires and can be moved together back and forth between the insertion lines and the welding lines along predetermined tracks (U, U'; O, O'). At least one of the feeder arms can be moved by means of a mechanical drive (22) in order to prestress both transverse wires relative to the other feeder arm in the direction of the transverse wires, and the transverse wires are positioned precisely in accordance with the predetermined distribution of the transverse wires by means of pivotable positioning elements (17,17' ) provided in the region of the welding lines.
摘要:
A lining-frame for a gallery or tunnel comprises two planar latticework trussed arches, each comprising an inner belt (3,4) and an outer belt (1,2) interconnected by a zig-zag rod chain (5,6). The arches are fixed parallel to one another by planar connector elements (81a,82a:81b,82b).
摘要:
A reinforcement mat for reinforced concrete consists of longitudinal wires and crosswires which are welded together at their points of cross. End portions of the crosswires project out beyond the edge longitudinal wires and are bent back in the plane of the mat towards the edge longitudinal wires. The longitudinal wires are arranged symmetrically about the longitudinal centerline of the mat partly at wider and partly at narrower pitch. At each edge of the mat a family of at least two longitudinal wires are provided at the narrower pitch.