DE2307848B2 - MULTILAYER CARDBOARD MACHINE - Google Patents

Description

45

The invention relates to a multilayer board machine with a machine frame having columns, within which several in the running direction one behind the other arranged upper wire sections serving to create the individual layers are arranged, and with a felt web extending over the length thereof to bring the individual together Locations.

Such a machine is described in US Pat. No. 840,228. However, in this respect this machine is unsuitable. because it is not specified how the felt web can be changed. From the DT-GM 7 (111 020 It is known that the interior fittings are freely cantilevered To store (C'antilevei -bauart), that is; iher With machines several meters wide, as are common today, this is not easily possible. The same applies to the cantilever screen change units as they in »Sieb und Filz *, 3rd edition. Page 254. and in your "Handbook of Paper and Cardboard Manufacture". 2nd Edition. Pages l ° 9, 1721, are described.

For this reason, a sieve has hitherto been used as the carrier web in practice. Lanue See are very expensive and sensitive. In addition, pulling in a new screen of this length requires a high investment Expenditure of time. The carrier web has therefore already been designed as a finite sieve, this into the ; Machine inserted lengthways and only then welded together to form an endless sieve. The seam thus formed can generally are not designed so that no marking is produced on the cardboard web and they has a long enough shelf life.

The object of the invention is to be achieved, a simple and quick changing of an endless to achieve trained carrier web.

This object is achieved according to the invention by the combination of the following features:

a) both the internals wrapped around by the individual upper sieves, such as rollers, suction boxes and the like (upper sieve installations), as well as those of the felt web and the like, are at freely cantilevered Support structures (executed in cantilever design)

b) the columns of the head of the upper wire sections etc. load-bearing machine frames are - seen in side view - each between the Seven each of two adjacent upper wire sections are arranged and

c) between each of these pillars and the next piece of felt wrapped around the built-in part (Guide roller) a distance is provided to allow the felt to pass through,

d) the supporting structure has on the driver's side supports, of which in the area of the lower and the Upper Filztrumes for changing the felt can be removed in each case a section, the upper removable section of the support is provided at the same time for changing the screen.

This makes it possible to put the carrier web combined as a package over a roller and then pull apart in the longitudinal direction of the machine, with the web loop along the course of the lower Filztrums is pulled out. Between two fixed columns, i.e. in the area of an upper wire section, is the upper Filztrum is then laterally pulled out of the machine to be above the guide rollers for this upper felt strand to be fed back into the machine. This means that despite using a endless carrier web (felt web without seam) ensures a simple pulling in of a new web without that therefore expensive and space-consuming extendable wire sections or a very large amount Space-consuming framing would have to be provided.

In the drawing, the invention is illustrated using an exemplary embodiment. It shows

1 shows a schematic side view of a multilayer board machine, and

Fig. 2 shows a section of this machine on a larger scale.

The in Fig. 1 illustrated multi-layer board machine has as a carrier web a felt web 1, which is endless is trained. The felt web 1 runs over a suction roll 2 and extends between two rows of fixed ones Pillars 3 of the Masehinenstuhlung, each - seen in side view - ■ /. Between two Top seven 4 stand. The upper sieves 4 run over a bust roller 5, a deflecting roller 6 and two Tension rollers 7 and 7 'and are each brought up to the felt web 1 by means of a press roller 8. Of the

Breast roll 5 is attached to the machine frame Headbox 9 assigned, and between breast roll 5 and guide roller 6 extend sicii flour, closely adjacent suction box 10. The rollers 5, 6, 7,7 'and 8 and the suction box 10 are attached to a supporting structure, which is designed in a so-called cantilever-ßauari, i.e. freely cantilevered is. The supporting structure has two cross members 11, on each of which a pressure support on the drive side and a tie rod (both not shown) attack. On the driver's side, two are up to the machine foundation Reaching supports 12 and 13 are provided with removable sections 14, 15 and 16, 17, 18 are equipped. In the longitudinal direction of the machine, there are two supports 19 on which the rollers 5 and 6 as well as the suction box 10 are attached. On the supports 12, 13 and the pressure port on the drive side Felt guide rollers 20 and 21 and a further press roller 22 are mounted.

When pulling in a new felt I, it is pushed in folded form over the suction roll 2, which is possible after removing a support on the driver's side. After raising the lower one Felt guide rollers 20 lying within the felt loop, this becomes along the course of the lower felt drawn into the machine. Then the sections 14 and 16 of the supports 12 and 13 are removed, so that the cross member 11 has the sole supporting function take over. The upper felt drum can now be pulled out of the machine from the side between two columns 3 will. The sections 14 and 16 are then reinserted and then the sections 15

»Ο and 17 removed, bringing the upper seventh strand to the can be felt back in the machine in the right place. Since the section 15 between ilen attachment points of the two press rolls 8 and 22 is located, the felt web is when the lateral retraction of the The upper run is introduced simultaneously into the couch press formed from these two press rolls 8 and 22. When a new upper sieve 4 is inserted from the side, the section is also on the support 13 15 removed, while a separate section 18 is provided for the support 12. This separate Section 18 is necessary because between the felt web 1 and the upper wire 4, the outer wire tensioning roller 7 'is mounted on the support / e 12.

1 sheet of drawings

Claims (1)

Claim: Multi-layer cardboard machine with a column-having machine frame, inside the several arranged one behind the other in the running direction and used to create the individual layers Upper wire sections are arranged, and with a felt web extending over their longitudinal extent for the merging of the individual layers, marked by combining the following features: a) both the internals wrapped around each of the seven (4), such as rollers (S, 6, 7, 7 ', 8), suction box (10) and the like (upper sieve installations), as well as those of the Felt web (J) entwined internals, such as press rollers (22), guide rollers (20) and the like, are on freely cantilevered (cantilever design) supporting structures (11, 12, 13, 19) stored ^ b) the columns (3) of the machine frame carrying the material feeder sections (9) of the upper wire sections etc. are - seen in a side view, between the wires (4) each of two ^a 5 upper wire sections that are adjacent to one another and are c) entwined between each of these pillars (3) and the next felt Built-in part (guide roller) is a space that allows the felt (1) to pass through intended, d) the support structure has on the driver side supports (12, 13), of which in the area of the lower and upper felt strands for changing the felt (I) each have a section (14, 15, 16, 17) is removable, the upper removable portion (IS) of the support (13) is provided for changing the sieve (4) at the same time.