Abstract: A surface scanner for surface defect detection of a cable comprises a measuring part and an analysis part, the measuring part comprises non-contact distance measurement sensors, the cable is positionable between the sensors such that beams of the sensors are directable to the outer surface of the cable to sample areas at a circumference of the cable for a length of the outer surface (L) of the cable in a run direction (x) of the cable for providing measurement data, and the analysis part comprises a receiver for the measurement data, a processor for processing the measurement data providing defect detection data and a continuous 3D topographic map of the outer surface of the cable, the analysis part comprising a neural network trained for detecting surface defects of the cable and outputting surface defects detection data. The invention also relates to an arrangement and a method for surface defect detection of a cable.

Abstract: A surface scanner for surface defect detection of a cable comprises a measuring part and an analysis part, the measuring part comprises non-contact distance measurement sensors, the cable is positionable between the sensors such that beams of the sensors are directable to the outer surface of the cable to sample areas at a circumference of the cable for a length of the outer surface (L) of the cable in a run direction (x) of the cable for providing measurement data, and the analysis part comprises a receiver for the measurement data, a processor for processing the measurement data providing defect detection data and a continuous 3D topographic map of the outer surface of the cable, the analysis part comprising a neural network trained for detecting surface defects of the cable and outputting surface defects detection data. The invention also relates to an arrangement and a method for surface defect detection of a cable.

Abstract: A system for manufacturing an irrigation pipe comprises an extrusion unit, a calibrator unit, a cooling unit for cooling the irrigation pipe in a cooling liquid, and a traction unit for drawing the irrigation pipe in the cooling unit. The cooling unit comprises a device for detecting holes in the wall of the irrigation pipe and arranged for being immersed in the cooling liquid. The device for detecting holes comprises at least one optical transmitter and at least one optical receiver which define an optical barrier. The device is arranged so that the holes in the irrigation pipe located below the device produce gas bubbles which modify the optical barrier.

Abstract: An arrangement and method for unloading raw material in connection with a cable manufacturing apparatus. The arrangement includes a feed inlet connected to the cable manufacturing apparatus for feeding raw material into the cable manufacturing apparatus, the feed inlet being adapted to be connected to an unloading spout of the raw material. The arrangement further includes a seal for opening and closing the feed inlet when the unloading spout is connected to the feed inlet.

Abstract: The invention relates to an arrangement in connection with extrusion tools. It comprises a nozzle structure which is provided with coaxially arranged nozzle elements (1, 2, 3, 4) and is arranged to form one or more layers which cover a flexible elongated element (6) on the surface of the flexible elongated element (3), which passes through the innermost nozzle element (4), and a guide member (5) corresponding the diameter of the elongated element (6) for controlling the flexible elongated element (6). The guide member (5) is arranged to be pushed in the direction of the elongated element (6) into its position inside the two innermost nozzle elements (3, 4) defining a first melt channel (7). The guide member (5) is arranged to provide a tapered space (52) between the elongated element (6) and the guide member (5), and the tapered space (52) is in fluid communication with the first melt channel (7).

Abstract: The invention relates to an arrangement for inductively heating an electrical conductor after the extrusion head in a process of manufacturing electrical cables (8) having insulation layer on the electrical conductor. The arrangement comprises a first distinctive part having induction means (5), and a second distinctive part having guide means (4) and provided in a splice box (3) for directing the magnetic field created with the induction means (5) to protect external parts from heating.

Abstract: The invention relates to an arrangement in connection with extrusion tools. It comprises a nozzle structure which is provided with coaxially arranged nozzle elements (1, 2, 3, 4) and is arranged to form one or more layers which cover a flexible elongated element (6) on the surface of the flexible elongated element (3), which passes through the innermost nozzle element (4), and a guide member (5) corresponding the diameter of the elongated element (6) for controlling the flexible elongated element (6). The guide member (5) is arranged to be pushed in the direction of the elongated element (6) into its position inside the two innermost nozzle elements (3, 4) defining a first melt channel (7). The guide member (5) is arranged to provide a tapered space (52) between the elongated element (6) and the guide member (5), and the tapered space (52) is in fluid communication with the first melt channel (7).

Abstract: An extrusion apparatus is used for extruding material through a nozzle (10) for forming a product In the nozzle (10), the material is pressed around rods (9) so that tubular cavities (13) are formed in the wall of the product. The rods (9) are hollow and the apparatus comprises channels (14) connected to the hollow rods (9) to enable flow in the tubular cavities (13).

Abstract: The present invention relates to preparing extruded article by flowing heat plastified stream of extrudable resinous thermoplastic material through an extrusion orifice. In the invention crosslinking additives are introduced and mixed to the surface portion of the stream of extrudable resinous thermoplastic material before the extrusion step. After the extrusion step the crosslinking of the surface portion of the extruded article provided with the crosslinking additives is initiated by special initiation means.

Abstract: The invention relates to an arrangement for a belt drive device, which comprises two continuous drive belts, which arc arranged to be operated by means of drive rollers (2), and which are arranged to travel around stretching rollers as continuous loops spaced apart, and which are arranged to be pressed by means of press rolls against the opposite surfaces of a cable or the like (3) to be drawn. In order to provide a simple structure, the drive rollers (2) are arranged to be rotated by a single power source by driving two planetary gears (8) connected in parallel and provided with angular front transmission. The rotary motion generated by the power source is arranged to be transmitted in the same direction to primary axles (9) of both planetary gears (8) provided with angular front transmission in order to rotate secondary axles (10) and the drive rollers (2) connected thereto in opposite directions.

Abstract: Spooling apparatus comprising means for rotatably mounting a first reel and a second reel, catching means for guiding a thread (1) to be spooled onto the first reel and further to the second reel and cutting means (5) for cutting the thread to be spooled when the thread to be spooled is guided from the first reel onto the second reel. The cutting means (5) comprises at least one cutting blade (7) which is moved at least in the cutting direction (K) as a result of the tension of the thread (1) to be cut.

Abstract: An arrangement in connection with clamping tools, which comprises a nozzle structure which consists of coaxially arranged nozzle elements and is arranged to form one or more layers which cover a flexible elongated element on the surface of the flexible elongated element, which passes through the innermost nozzle element, in which arrangement at least the head of the nozzle element, which controls the flexible elongated element, is a separate unit which is arranged to be pushed into its position in the direction of the flexible elongated element and provided with gripping means, which grip the innermost nozzle element of the nozzle structure as the unit arrives at the nozzle element. The joint between the separate unit and the nozzle element of the nozzle structure is arranged to be loosened by repulsive force acting on the separate unit in the direction of the flexible elongated element and the separate unit is arranged to exit from the nozzle structure in the direction of the flexible elongated element.

Abstract: The invention relates to a method in connection with processing polymer or elastomer material, wherein additive is added to the polymer or elastomer material, and the additive is subjected to the desired chemical reaction. To minimize energy consumption, infrared radiation is led to the polymer or elastomer material, the wavelength of the radiation being so chosen that the radiation penetrates optimally the polymer or elastomer material, but absorbs in the additive, producing the desired reaction in the additive.

Abstract: An arrangement in connection with a belt drive device having two counter-rotating continuous belts operated by drive rollers traveling around stretching rollers, whereby the belts are urged towards one another by press rolls to draw a cable between the belts. Adjustment of the stretching rollers is provided by an adjustment mechanism that effects the axle with which the stretching rollers are associated.

Abstract: The cable is made up of a series of pairs stranded alternately in one direction and the other. At the locations of the reversal of the stranding direction, the individual conductors are kept in the form of a web and welded together side by side. Between two thus bonded segments, the adjacent pairs are twisted in opposite directions. A ground wire is provided with lengths of sheathing which come to be placed in the bonded segments. These segments are marked by deposition of a radioactive substance or other indicator material detectable during a subsequent stage of manufacture and actuating marking. Once overall stranding and jacketing have taken place, or during those stages, the bonded segments are spotted owing to the indicator substance and are marked visibly.

Abstract: The optical fiber paid out from a reel passes through an extrusion head, then through a cooling vat, the sheath extruded around it being pulled by a withdrawal device. The sheath then passes through a second vat, when the stranding element is withdrawn by an auxiliary withdrawal device under as low a tension as possible. In the second vat, the stranding element is reduced to a temperature lower than the ambient temperature so that contraction of the sheath ensures the excess length of the optical fiber.

Abstract: A grooved cylindrical core or rod is conveyed in a state of elastic elongation, giving it excess length, through a distributing device and a die-plate. Optical fibers are each fitted in a respective groove of the rod at the entry of the die-plate. Downstream from the die-plate, the rod provided with the fibers passes through a zone in which there is a powerful electric field created by a ionization bar. Under the influence of the ionization, the fibers cling to the walls or bottoms of the grooves. This provides the drag necessary for stretching the fibers when they approach the rod.

Abstract: The optical fiber paid out from a reel passes through an extrusion head, then through a cooling vat, the sheath extruded around it being pulled by a withdrawal device. The sheath then passes through a second vat, when the stranding element is withdrawn by an auxiliary withdrawal device under as low a tension as possible. In the second vat, the stranding element is reduced to a temperature lower than the ambient temperature so that contraction of the sheath ensures the excess length of the optical fiber.

Abstract: An assembly of gates is provided at each end of a vat. Two uprights mounted on a lock-chamber floor support respective brackets. Pivoted between the floor and the brackets are gate flaps, the pivot rods of which are fitted in holes in the floor and in the brackets. Each gate flap includes a notch, and the successive gates match successive diameters of elongated elements which travel through the vat. In case of localized excess thickness on an elongated element, the impact causes spontaneous opening of the gate guiding the element.

Abstract: The drums to be loaded or unloaded are placed on a carriage borne by rollers and comprising telescopic arms. The carriage is guided along an arcuate path by a rigid arm and a pivot pin situated at the end of a bar supported by a base. A motor is provided on the carriage to drive the carriage in the arcuate path.