|Publication number||US2948200 A|
|Publication date||Aug 9, 1960|
|Filing date||Jan 13, 1958|
|Priority date||Jan 13, 1958|
|Publication number||US 2948200 A, US 2948200A, US-A-2948200, US2948200 A, US2948200A|
|Original Assignee||Lorenz Westerbarkey|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (22), Classifications (12)|
|External Links: USPTO, USPTO Assignment, Espacenet|
' Aug. 9, 1960 L. WESTERBARKEY 2,948,200
. 4 METHOD AND ,APPARATUS FOR WINDING AND CEMENT-ING TUBES QR H osE 2 Sheets-Sheet 1 Filed Jam-15,1958
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METHOD AND APPARATUS FOR WINDING AND CEMENTING TUBES 0R HOSE A Filed Jan. 13, 1958 'Y v2 Sheets-'Sheet 2 h .i337 l B7' ma m. www
States Patenti() AND APPARATUS FOR WINDING AND CEMENTING TUBES OR HOSE Y The present* invention relates to an apparatus for pro- 15 ducingexibletubes or hose made of helically wound,
vglued strips of paper,` metal foil, or other suitable material, or a combination of such materials.
In a similar apparatus known prior to this invention rthe tubes were formed by rotatable coils carrying a 20 and before it could be Withdrawn as a finished product,
it had to be passed through a heating zone to remelt.,`
'the dried adhesive coating to amalgamate theindividual 30 layers. Y Y Y VIt is an object of the present invention to Vprovide a tube winding apparatus which no longer requires these preliminary coating and drying operations las well as the subsequent remelting oper-ation, and which thus permits a quicker, more inexpensive, and more veconomical ^production of the tubes.
This object of the invention is attained by the com- 'bination of a Winding mechanism which likewise consists of two or more coils which carry a supply of paper,
plastic, metal foil, or other suitable material in strip or Y lribbony form and revolve around a stationary winding mandrel, and an Iadhesive applying mechanismrwhich Yrevolves around the'winding mandrel together with the supply coils and applies a Iliquid coating of adhesive upon y the strips after the same have been withdrawn from the Y revolving supply coils and immediately before they are Wound upon the stationary mandrel.
The new method of producing tubes-also has the 'advantage that, because of the application of the liquid 50` :adhesive immediately prior to the winding operation, such -l adhesive may be of a lower, lessV expensive grade than that required in the above-mentioned prior method in which the strips were coated and then dried in a preoperation and again heated after being Wound to remelt the dried adhesive.
Another important feature of the present invention for attaining the above-mentioned objects and advantages consists in the use of at least one pump which is connected with the revolving adhesive applying mechanism for supplying the necessary amount of adhesive thereto.
Another feature of the invention consists in mounting the adhesive pump or pumps so as to revolve with the supply coils around the stationary winding mandrel.
A further feature of the invention consists in the provision of a series of revolving nozzles which are connected to the pump and through which the liquid adhesive may be applied upon each strip of paper, plastic, metal foil or other material immediately before the same is woundnpon the stationary mandrel.
Further objects, features, and advantages of the present invention will be apparent from the following detailed 'the ydriving motor.
V9 to form a tube orhose.
"2,948,200 Patented nAug;
"ice Y 2 Y description thereof, particularly when read with reference to the accompanying diagrammatical drawings, in which- Fig. 1 illustrates a front viewof the entire winding machine; Y
Fig. 2 illustrates a cross section taken along line II--lI of Fig. l; while Fig. 3 illustrates a longitudinal cross section through one of the nozzle elements.
Referring to the drawings, the new Winding machine for producing'exible tubes or hose consistsV of a substantially U-shaped machine frame 1 which comprises a housing 2 -at one side containing a driving motor and suitable power-transmittingmeans, not shown, an upright 3 at the other side which also forms ajhousing containing a grooving mechanism, and an intermediate member 4 forming a base and containing power-transmitting means connecting the driving motor within housing 2 with the grooving mechanism in'upright 3.VV A hollow `shaft 5 is rotatably mounted within a bearing 6 within astationary housing element 7 and carries a gear or sprocket wheel 8 which is connected through suitableY power transmitting means, such as intermediate gears or a chain to Housing part 7 further supports a stationary tubular member 9 which forms a bearing sleeve for supporting a likewise tubular main drive shaft 10 for-rotation thereon, and the front portion of'which forms a stationary winding mandrel on Which tWo or more long strips 11 of paper, plastic, metal foil,vor other suitable flexible material are wound. Within housingv 2 shaft 10 carries a gear or sprocket wheel 12 which is likewise connected through suitable powertransmitting means to the `driving motor. The front wall 13 of housing 2 which may also carry suitable bearing means, not shown, to support shaft 10 carries on its outside -a stationary gear 14. Shaft 10 has secured thereon a supporting member 15 which may either consist of a outer ends of rods 16 form shaft portions on which reels 17 and 18, respectively, are rotatably mounted,
each of which carries a roll of paper, plastic, metal foil, or other flexible material which is unreeled therefrom to form the long strips 11 which areV Wound upon mandrel If desired, the angularity of rods 16 may also be slightly adjusted by suitable means 19. The main shaft 10 further carries a pair of pumps 20 in diametrically opposite positions to each other. Each of these pumps 20 is driven by a gear 21 meshing `with and revolving around the stationary gear 14 and secured to a shaft 22 which is rotatably mounted in a bearing 23 and carries on its other end a Worm 24 which meshes with a worm gear 25 on the shaft'of each pump 20. Gears 21 are preferably made of a synthetic material to reduce the noise of their operation.
Shaft 10 further carries a container 26 of any suitable shape which is connected by tubes 27 to pumps 20, each of which, in turn, is connected by a tube 28 to a nozzle member 29 which is secured by a bracket 30 to shaft 10. Similarly as -angular rods 16 supporting reels 17 and 18, respectively, the angularity of brackets 30 may also be slightly adjustable by suitable means, not shown. Container 26 has a suitable closable filling opening, not shown, through which it may be iilled with a suitable liquid adhesive which is then supplied by pumps 20 to nozzle members 29. Each of these nozzle members, as illustrated particularly in Fig. 3, consists of a tube which is closed at one end and has a row of conical nozzle openings 31 at one side facing toward the respective strip 11. Pumps 20 are driven at a speed in a suitable relation to the speed of the main shaft 10 and the winding speed of strips 11 so as to control the amount of adhesive applied to the strips.
As already indicated, upright 3 also `forms a housing which encloses a grooving mechanism which, after the above-described winding mechanism has formed a tube or hose on the stationary mandrel 9, is adapted to mold the wall of the tube into a helically grooved shape which renders the tube iiexible. This grooving mechanism consists of a set of outer screw threads 32 on the end of hollow shaft 5, and a :nut-shaped member 33 with corresponding innerscrew threads 34 and a gear or sprocket wheel 35 thereon which is driven by the motor in housing 2 through suitable power transmitting means partly located in the base member 4. Gears or sprocket wheels 8 land 12 on shafts 5 and 10` are driven in the same direction While gear or sprocket wheel 35 is driven in the opposite direction so that the corresponding screw threads 32 and 34 also rotate in the opposite directions to each other :and at the same speed. Thus, when the end of the smoothly wound tube 36 is moved into engagement with the rear end of threads 32 and 34 it will be gripped between these two sets of threads and since these threads are in `a fixed position relative to each other, they Will draw upon and convey tube 36 continuously forward `and thereby impress continuous helical grooves into the outer and inner surfaces of tube 36 and mold the entire wall of the tube into a spiral accordion-like shape. After passing out of threads 32 and 34, tube 36 slides upon a stationary serrated member 37 on one end of a shaft 38 which extends through hollow shaft and is secured to a Stationary part 39 of housing 2. By the friction between the inner corrugations 40 of tube 36 and the serrated outer surface of member 37, the individual corrugations of the spiral tube are pressed lagainst each other, While the adhesive sets, thus producing a flexible tube of a relatively great wall thickness and high compressive strength.
In the operation of the tube winding machine, strips 11 `are ydrawn off reels 17 and 18, are wound around the stationary mandrel 9 and at first fed forwardly by hand until they are grasped by threads 32 `and 34 of the grooving and feeding mechanism. Thereafter, the entire operation continues automatically, reels 17 and 18 revolve around mandrel 9, and strips 11, during their piassage from the reels to mandrel 9, are coated with liquid adhesive which is pumped by pumps 20 from container 26 into the likewise revolving nozzle members 29 and is then passed through nozzle openings 31 and sprayed upon one side of strips 11. The speed of revolution Vof reels 17 and 18 is in `accord with the feeding speed of the wound tube which results from the opposite rotation of threads 32 `and 34 along the tube.
Although in the `above `description of one preferred embodiment of my invention it is said that only two strips are being wound upon mandrel 9, `any suitable larger number of supply reels and nozzle members may be provided on shaft 10. Also, the pump mechanism may be considerably modified. For example, instead of providing a separate pump for each nozzle member 29, a single pump of any suitable design may be mounted on shaft 10. Also, instead of mounting the pump or pumps on shaft 10 so as to revolve thereon, a single pump may be provided in a stationary position and connected to the revolving nozzles so as to supply the same with liquid adhesive by any suitable means known as such. The container for 'holding a supply of adhesive, instead of being mounted on shaft 10 and rotatable therewith, may also be disposed `in a stationary position and connected in'any suitable mannerknown as such to the lrevolving pump on shaft' 10.
Although my invention has been illustrated yand described with reference to the preferred embodiments thereof, I wish to have it understood that itis in no way limited to the ydetails of such embodiments, but is capable of numerous modifications within the scope of the appended claims.
Having thus fully disclosed my invention, what I claim 1s:
1. An apparatus for producing a exible tube, which comprises a stationary winding mandrel, a 'plurality of reels, each reel adapted to carry -asupply 'o`f strips 4of flexible material and disposed at an oblique angle to the lmandrel, means yfor storing and feeding a liquid adhesive to said material at a point intermediate at least one 'of said reels and said mandrel, means for revolving" said reels and said adhesive storing and feeding means about said stationary mandrel, whereby a helically Wound tube is formed on said mandrel from said strips when the strips are applied to the mandrel and drawn off thefreels upon revolution thereof, said revolving means comprising a main shaft coaxial with said stationary 'ni-andrel, means for rotating said shaft, and means for mounting said reels and adhesive storing and feeding means'on said shaft so as to be rotatable with said shaft, said `adhesive storing and feeding means comprising *a conrainer constituting said liquid adhesive storing means,` the adhesive feeding means comprising at least one pump mounted on said main shaft and rotatable therewith, positive transmission means between the shaftand 'the pump for driving said pump upon rotation of the shaft, means for applying said adhesive upon said fiexible material, and means for connecting said container Witli'fs'aid pump and said pump to said applyingmeans.
2. An apparatus as defined in claim 1, wherein said applying means comprise a plurality'of spraying nozzles `disposed substantially parallel and adjacent to ys'aifdfrrate-V rial at said intermediate point between each of said reels and said stationary mandrel.
References Cited in the le of this patent UNITED STATES PATENTS 1,932,942 Thordarson Oct.,3l, v1933 2,623,445 Robinson Dec. 30,11952 2,688,906 Dokopil .,'..f Sept. 14, 1'954
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|U.S. Classification||493/276, 493/298|
|International Classification||B21C37/06, B21C37/12, B31F1/20, B31C3/00|
|Cooperative Classification||B21C37/124, B31F1/205, B31C3/00|
|European Classification||B31C3/00, B31F1/20C, B21C37/12E|