Assembly device for tubular structures and tubular bolts for this purpose

p0001The invention relates to a manufacturing apparatus of tubular structures by extruding of rubber and / or plastics on tubular mandrels. The invention further relates to a tubular mandrel as carrier for producing tube-like structures by Auftextrudieren of rubber and / or plastic to the dome surface.

p0002For the production of hoses is known, continuously coupled together, propel cylindrical dome in a conveying direction and applying rubber and reinforcement layers to the Dome. Such tubes are used for example for air bags in vehicles.

p0003<patcit id="pcit0001" dnum="DE10229081A1"><text>DE 102 29 081 A1</text></patcit> discloses an automated tube manufacturing method and apparatus therefor. For detecting connection points of successive Dome a material difference is detected at the junction of two domes and evaluated for the positioning of a cutting head.

p0004Out <patcit id="pcit0002" dnum="DE10025350"><text>DE 100 25 350</text></patcit> is to control and monitor a conveyor belt made of rubber known to integrate a transponder in the conveyed material. By means of a scanning unit of the transponder is detected to perform an accurate Gurtlagebestimmung.

p0005<patcit id="pcit0003" dnum="EP1748383A2"><text>EP 1748383 A2</text></patcit> discloses a metal tube with a wireless identification transponder RFID, which is glued on a sticker on the outer surface of the metal pipe and located at a distance of less than 1 mm from the outer surface.

p0006The problem of the use of radio transponders in metal pipes, however, is that this is often not easy, as in the <patcit id="pcit0004" dnum="EP1748383A2"><text>EP 1748383 A2</text></patcit>, Can be applied as a sticker on the mandrel surface or recessed into a depression of the dome. Rather, it should be noted that tubular domes are generally made of metal, in particular an aluminum alloy. Thereby, the radiation characteristics of the radio transponder are adversely affected. The metallic spiral ensures a shielding of the transponder signal. The signal can only hemispherical upward propagate through the plastic layer. It must also be ensured that the surface of the dome is not impaired in the range of the radio transponder with respect to the achievable production quality.

p0007Passive radio transponder also have the problem that a sufficient signal energy must be coupled with the transponder interrogation radio in the radio transponder in order to obtain a response signal receivable. The shielding characteristic in the vicinity of the radio transponder is therefore and to guarantee for the harsh environment of a manufacturing process are of particular importance.

p0008In the continuous production tubing with domes there is a need to monitor the quality of the production and understand the manufacturing process for the individual tubes.

p0009The object of the invention is therefore to provide an improved production device for tubular structures and improved tubular Dome this. The object is achieved with the tubular mandrel of the aforementioned type in that the mandrel surface is a depression and a radio transponder is inserted into the depression and defined with a plastics material into the depression, so that the plastic material forming the mandrel surface in the region of the depression.

p0010It is therefore proposed to allow for using a radio transponder, assigned crafted tube sections certain Domen and to determine the number of manufactured on the mandrel tube sections for each mandrel. In the event that subsequently a mandrel is identified as defective may be made on the mandrel, the tube sections and final products may already made of hoses, such as for example air springs, identified to this recall if necessary. Furthermore, the sorting or revision of domes using the detectable using the radio transponder number of passes can be controlled per spike.

p0011The use of radio transponders in tubular Domen accomplished by setting the radio transponder with a wear-resistant plastics material in the one-reduction and the formation of the dome surface by the plastic mass in the region of the depression. It has been shown that in this way the radio transponder can be read in the manufacturing process even when extruded rubber and strength layers and the small plastic material does not affect the manufacturing process, even if rubber and / or plastic layers are extruded onto the dome surface.

p0012it when the mandrel formed of metal and in the depression between the metal dome and the radio transponder, a layer is provided from the plastic compound is particularly advantageous. By the intermediate layer between the metal-formed bottom of the depression of the dome and the radio transponder is achieved that the emission of the radio transponder is not affected by the adjacent metal layer.

p0013As a radio transponder passive transponders can be used in particular, which are supplied by a radio signal with energy of the radio signal at a wireless query and using this energy in the radio transponder emit stored information about the associated arbor. Such information may in particular be a mandrel mandrel assigned ID that is stored in the radio transponder.

p0014The object is further achieved by a production device for tubular structures of the type mentioned by at least one transponder reading unit including a radio antenna for reading and writing of data stored in the radio transponders dome information and connected to the at least one transponder unit data processing unit of the detection assignment of individual tube-like structure of the produced on a mandrel for a spike identification of the cathedral, where the tube-like structure was prepared, and / or for detecting the amount of tube-like structure is set up.

p0015In the production of tubular structures using the tubular dome above it is thus possible to read the information stored in the radio transponders Dome using the transponder reading unit and evaluated for purposes of quality assurance. The wear of each dome is by detecting the amount of manufactured on a mandrel tubular structure, ie the detection of transits of the Dome are determined through the manufacturing facility. An assignment of tube sections and made from the hose sections products, such as air springs to the individual domes is made possible that the hose sections assigned hose section number of the mandrel identifier is allocated for the mandrel on which the tubular section is made. This assignment is then stored and can be evaluated.

p0016Since the transponder signal can propagate only a plastic cover upwards, the Rotarian orientation of the Dome but arbitrarily, it is advantageous to read out the signal by means of a loop antenna, by the Dome are passed during the manufacturing process.

p0017The invention will be exemplary explained in more detail with reference to the accompanying drawings. Show it:<dl id="dl0001"><dt>figure 1</dt><dd>Sketch of a cylindrical dome with depression and radio transponder in the depression;</dd><dt>figure 2-</dt><dd>Cutaway view of a cylindrical dome in the draft; </dd><dt>Figure 3 -</dt><dd>Sketch a manufacturing facility with transponder reading unit and data processing unit.</dd></dl>

p0018<figref idrefs="f0001">figure 1</figref> shows a sketch of a cylindrical dome 1 recognize a spike clutch 2a at one end for coupling to a corresponding coupling mandrel 2b of a previous cathedral. 1

p0019In the mandrel surface of the mandrel 1 a depression 3 is embedded in which is a radio transponder 4 embedded and fixed with a plastic material in the depression. 3 The top of the plastic mass is rounded so that it is adapted to the cylindrical mandrel surface and seamlessly connects to it.

p0020Between the base and the side walls of the recess 3 and the radio transponder 4 is a plastic layer is provided in each case, so that the radio transponder 4 does not lie directly on the formed of an aluminum alloy mandrel. 1 In this way it is prevented that the electromagnetic field is so severely reduced by the mandrel 1 in the radio interrogation.

p0021The radio transponder 4 is, for example, a passive RFID (radio frequency identification) transponder, which is supplied by a radio signal with power of the radio signal at a wireless data and using this energy emit stored information about the associated mandrel 1 in the radio transponder. 4 This information is particularly a thorn identifier.

p0022<figref idrefs="f0001">figure 2</figref> leaves a cut-away view of a cylindrical dome 1 in the region of the depression 3 recognize. It is clear that the radio transponders 4 in the distance S₁ is fixed to the walls of the metallic dome 1 with the aid of the plastic material in the depression. The plastic material is much softer than the mandrel surface, but not shielding.

p0023<figref idrefs="f0002">figure 3</figref> leaves a manufacturing device 5 seen in the in the <figref idrefs="f0001">figure 1</figref> outlined Dome 1 are coupled to each other and are continuously transported in a direction of feed V through the manufacturing facility. After connecting the dome 1 together with the help of a thorn coupling unit not shown a mandrel identifier from the radio transponders 4 of a moving through the transponder reading unit Doms 1 is read by a transponder reading unit. 6 For this purpose a Auslessignal is emitted at a suitable frequency with a transponder selection antenna 7, which supplies and causes one stored in a memory of the radio transponder 4 mandrel identifier for the associated mandrel 1 is read from the memory and with the aid of the radio transponder radio transponders 4 with energy 4 is emitted. The emitted Dorn identifier is received with the preferably designed as a loop antenna transponder antenna Auslesean-7 and evaluated by the transponder reading unit. 6 For this purpose, the transponder reading unit 6 is connected to a data processing unit 8, in which the read-out mandrel identifier is stored. This mandrel identifier is in the data processing unit 8 associated with at least a serial number of the tube sections produced on the mandrel 1 in the following. These serial numbers for the hose sections may be applied later to the prepared tubes, for example, by provided with the current tube numbers stickers are applied to the surface of the tube sections. Also, a laser marking or the like is possible.

p0024Since the feed speed of the dome 1 is known, the individual dome 1 in the manufacturing process can be easily tracked without a further reading of the radio transponder 4 is required. Furthermore, it is possible to check the transponder technology that the correct domes 1 (tools) in use. Process monitoring is more fully possible if the Dome IDs are read also during return transport. Then, for example, carried out a discharge of domes 1, when it was recognized, for example, with reference to the dome identifier that review, revision or replacement is required.

p0025In another manufacturing process (rubber) is an extruder 9, a first layer 10, for example made of rubber applied to the series of domes 1 in a continuous process. In this layer 10, a resistance layer 12 is applied with a Spiralling 11 followed by a fabric aufspiralisiert on the layer. Then applied to this resistance layer 12 with a further extruder 13 is a further rubber layer 14th The steps of Aufspiralisierens of strength layers 12 and rubber layers 14 may be repeated several times. In particular, should the resistance layer 12 forming scrims are alternately aufspiralisiert opposite directions.

p0026At the end of the manufacturing process of the continuous tube is divided with a separator 15 in tube sections 16 and tube sections 16 which correspond approximately to the length of a cathedral, and the corresponding mandrel 1, in which the tube section is, again separated. The exits on a mandrel 1 tube sections 16 can be divided into smaller portions and are withdrawn using a puller, not shown, from the mandrel. 1

p0027In this continuous manufacturing process, the transponder reading unit 6 with the connected data processing unit 8 ensure that the tubing sections 16 can be associated with the domes 1, on which they were made. In addition, the number of passes can be per Dorn 1 detected by the manufacturing device 5 and used for quality assurance. So each mandrel 1 of a review, after reaching a specified number of times or may be a rejection of the Dome 1 after reaching the maximum number of runs to be initiated.