MACHINE FOR LONGITUDINAL CORRUGATING OF SHEET MATERIAL
The invention relates to a machine according to the introduct ion of claim 1 , f or longitudinal corrugat ing of a sheet material , with opt ion between dif f erent , predetermined prof i le patterns .
Background : The roll-forming technique concerned , has already been described in Norwegian patent specif icat ion No . 160.287.
Object :
It is a main object of the present invention to provide a corrugating machine, which is making the change-over from one profile design to another substantially easier and less expensive than for the machine of Norwegian Patent Specification 160.287. It is a particular object to provide a machine that can be provided with simple auxiliary equipment for powered, e.g. automatically controlled, change-over.
The inventive priciple:
The main object of the invention can be achieved by a machine designed according to claim 1. Additional features are disclosed in the dependent claims, The machine according to the present invention is superior to any known roll-forming machine, regarding the change-over from one profile design to another predeter¬ mined profile, as change-over is substantially quicker.
Furthermore, the machine according to the present invention is much simpler and quicker to manufacture than conventional rollforming machines and accordingly, the total building costs will be at a fraction of the corresponding costs of any other conventional machine or production facility providing the same number of equivalent profile designs.
The change-over may be operated manually by only one operator, no matter which change-over method is used (manual, mechanic, or automatic; depending on mode of design) .
Regarding both structure and costs, as well as related usability, the machine according to the present invention will differ greatly from known solutions.
Examples:
The invention will become clear by the following detailed description with drawings; where fig. 1 shows a schematic side view of a section of the profiling part of a machine, with typical arrangement of integrated revolvable units incorporating fixed profiling sets, and corresponding counter-roller sets in the drive-stand, each rotor correspondingly having four operative positions for different profiles, fig. 2 shows a corresponding side view, but with two-piece profiling sets, and with two separated complete profiling sets having an upper and a corresponding lower row of forming rollers, arranged on an upper and a corresponding lower revolvably displaceable common unit, fig. 3 shows still another corresponding side view, with vertically displacable units, fig. 4 shows a schematic side view of a side girder, as in fig. 1, and a section of the corresponding bottom part, fig. 5 shows a schematic top view corresponding to the side view in fig. 4, fig. 6 shows a schematic plan view in the central part of the machine corresponding to the side view in fig. 4,
fig. 7 shows a schematic side view on the inner side of a side girder, corresponding to fig. l, and a section of the side girder, to show a device for locking the revolvable units with a simple locking mechanism, 5 fig. 8 shows a schematic section with a front view of the locking mechanism of fig. 7, fig. 9 shows a schematic front view of a common unit according to fig. 3, fig. 10 shows schematically a powered revolving 10 connection for changing the revolvable units of a machine according to fig. 1, in one operation, fig. 11 shows a corresponding device for changing over for a machine according to fig. 2, while fig. 12 shows a corresponding device for chaning 15 over of the rotatable units of the counter-rollers of the drive set in a machine as shown in fig. 3.
Fig. 1
I) Revolvable unit for counter-roller sets 20 2) Counter-roller set
3) Revolvable unit for fixed profiling sets
4) Profing sets
4A) Forming rollers, matching the main plane of the sheet material 25 4B) Forming rollers, matching the height incremented plane of the profile 4C) Apertures for the passing of the sheet
5) Side girders of the frame work for the machine
6) Supporting legs of the frame work 30 7) Supporting base of the frame work
8) Hook for locking the revolvable units in position
9) Sprocket wheels for drive shafts
10) Drive chain tightener
II) Drive chain for the drive sets 35 12) Drive shafts for the drive sets
13) Shaft of revolvable units
14) Journal bearing of revolvable units
Fig. 2
3A) Revolvable upper unit of two-piece profiling sets
3B) Upper profiling sets, in operative position matching the main plane of the sheet 3C) Corresponding revolvable lower unit of two-piece profiling sets 3D) Lower profiling sets, in operative position matching the height incremented plane of the sheet 0
Fig. 3
3E) Displacable units for one-piece profiling sets 3F) Profiling sets in displacable unit 15) Vertical guides for displacable profiling units 5 16) Guidance slots for the displacable profiling units, the slots being made up by the vertical guides
Fig. 4
17) Upper transverse bracing for the top part of the 0 machine
5A) Side girders of the frame work of the bottom part of a two-piece machine 5B) Side girders of the frame work of the top part of a two-piece machine 5 6A) Supporting legs of the bottom part 7A) Supporting base of the bottom part
Fig. 5
17A) Upper transverse bracing with bearing (19) for 30 supporting a drive shaft (12) with drive rollers (20)
18) Journal bearing for the drive shaft (in this example shown as flange bearing)
19) Bearing for the drive shaft
20) Drive rollers of the shaft (12)
35 21) Edge-forming rollers for the forming of chamfered edges 22) Counter-rollers for the outer parts of the profile
Fig. 6
23) Chain connection between revolvable units (1 and 3) in the two-piece machine (endless chain being shown) 24) The stapled line shows the main plane of the sheet
25) The stapled line shows the corresponding height incremented plane
9A) Sprocket wheels for the common units
17B) Lower transverse bracing for main parts (bottom part) of a two-part machine
Fig. 7
Shows locking arrangement with a hook (8) and incorporated parts 8A, 8B, 8C, 8D, 8E, 8F, 8G, 8H for locking the rotatable common units (1 and 3) in the corresponding drive position, showing each locking hook (8) to be a locking mechanism for a rotatable unit (1) of the counter-rollers in one drive set, and an adjoining common unit (3) for corrugating.
Fig. 8
Shows more detained the hook arrangement (8) shown in fig. 7, with a more detained description of the elements 8A-8H. Thus the hook (8) has a fixed bolt (8A), which is passed through the side girder (5) in a journal (8B). The bolt (8A) is fixed to an arm (8D) by a key (8C) in a corresponding keyway in the bolt and the arm (8D). The arm (8D) further has another fixed bolt (8E). The bolt (8E) for all the hooks (8) with the parts (8A-8E) is pivotally linked by the bolts (8E) to a common longitudinal maneuvering arm (8G) through journals (8F).
Fig. 9
Shows a sheet formed displaceable common unit (3E) with a upper (3F) and three lower profiling sets for a station, comprises profiling rollers 4A and 4B and edge rollers
(21) and (22) for flat or oblique edge ending. Such a common unit seperated traversly in the middle, characterizes the roller means for one of the profiling sets in a revolvable common unit with fixed, not two-piece profiling sets.
Fig. 10, 11, 12
26) Motor connected to the the revolving connection (23)
(chain) between revolvable common units.
Fig. 10
Correspond to a machine with profiling set according to fig. 1.
Fig. 10, 11, and 12 shows a powered revolving connection between rotatable units for the machines shown:
Fig. 10 corresponds to a machine according to claim 1, with a continous chain connection (23) to sprockets (9A) on the different units (1,3) and over an additional sprocket (10A) at the lower part of the machine to a motor (26) at the other end.
Fig. 11 corresponds to a machine according to fig. 2, with rotatable units 1, 3A, and 3C.
Correspondingly fig. 12 shows a revolving connection (23) for the rotatable units (1) for the counter-rollers arranged at the drive units for a machine according to fig. 3, with relocatable units (3E) for the corrugating elements (3F). Further it is necessary with a lower, additional sprocket (10A) between each of the units (1) to have sufficient chain length to the sprockets (9A) and for guiding the chain (23), to have chain clearance between the vertically relocatable units (3E), said chain is arranged closely inside one of the side girders close to the main part of the rotor.