EQUIPMENT FOR PRODUCING CONICAL PRODUCTS

Abstract: With an installation for manufacturing conical objects from two webs (5, 6) of flexible material, conical valves for bags can be made in an efficient manner since a guiding device (8) is mounted consisting of two change-direction irons, (15, 16) positioned in the same planes as the ones in which the webs come out of the folding device. For the guiding device enables the folded webs to continuously shift into each other with the open sides facing each other. Furthermore the installation should have a chop-off device (10) a glueing device (19, 20) and a driving apparatus (17, 18).

Description: INSTALLATION FOR MANUFACTURING CONICAL OBJECTS. THE INVENTION RELATES TO AN INSTALLATION FOR MANUFACTURING CONICAL OBJECTS, SUCH AS VALVES FOR PACKAGE BAGS, FROM TWO WEBS OF FLEXIBLE MATERIAL, BEING FED INTO THE INSTALLATION FROM ROLLS. A VALVE IS A TUBULAR DEVICE MADE OF FLEXIBLE MATERIAL, THROUGH WHICH A BAG OF FLEXIBLE MATERIAL CAN BE FILLED AND WHICH CAN CLOSE THE OPENING IN THE BAG AFTER THAT. FOR FILLING1 THE VALVE IS SLID ABOUT A FILLING PIPE AND IN SUCH A MANNER THAT THE OPENING OF THE FILLING PIPE EXTENDS THROUGH THE INNER END OF THE VALVE INTO THE BAG. USUALLY THE SHAPE OF THE VALVE IS CYLINDRICAL. IF SLID ABOUT THE FILLING PIPE. DURING PRODUCTION AND TRANSPORT OF THE EMPTY BAG THE VALVE IS FOLDED FLAT AND THUS HAS A RECTANGULAR SHAPE. A CONICAL VALVE IS NOT CYLINDRICAL, BUT HAS THE SHAPE OF THE SURFACE OF A FLATTENED CONE. DURING PRODUCTION AND TRANSPORT OF THE EMPTY BAG THE VALVE IS FOLDED FLAT AND HAS THE SHAPE OF A TRAPEZIUM. THE VALVE HAS TWO FUNCTIONS: - TO ENCLOSE THE FILLING PIPE AS THOROUGHLY AS POSSIBLE DURING FILLING AND - TO TRANSFORM IT IN SUCH A MANNER AFTER FILLING THAT THE FILLING GOOD IS PREVENTED FROM PASSING THROUGH TO OUTSIDE. THE CONICAL VALVE IS FAR MORE SATISFACTORY IN BOTH FUNCTIONS THAN THE CYLINDRICAL VALVE KNOWN UP TO NOW. THERE ARE VALVES IN WHICH THE CYLINDRICAL SHAPE HAS BEEN PURPORTLY ABANDONED, BUT OF THOSE ONLY EMBODIMENTS ARE KNOWN WHICH HAVE BEEN MANUFACTURED BY SEALING THE CONTACT SURFACES AND THUS THEY HAVE TO BE MADE OF SEALABLE MATERIAL. SUCH AN EMBODIMENT HAS BEEN DESCRIBED IN BRITISH PATENT SPECIFICATION 1,000,335. THE INVENTION AIMS TO PROVIDE AN INSTALLATION FOR MANUFACTURING CONICAL OBJECTS, SUCH AS VALVES FOR BAGS, WHICH DO NOT HAVE TO BE MADE OF SEALABLE MATERIAL. ACCORDING TO THE INVENTION1 THE INSTALLATION IS CHARACTERIZED IN THAT IT COMPRISES: - A FOLDING DEVICE THAT CAN FOLD IN TWO SAID TWO WEBS LENGTHWISE, - A GUIDING DEVICE THAT CAN SHIFT SAID FOLDED WEBS INTO EACH OTHER WITH THE OPEN SIDES FACING EACH OTHER, - A DRIVING APPARATUS1 - A CHOP-OFF DEVICE, AND - A GLUEING DEVICE. IF THE INSTALLATION IS USED FOR MANUFACTURING CONICAL VALVES FOR BAGS, IT IS VERY PRACTICAL TO MOUNT A GRABBING DEVICE WHICH IS ABLE TO TRANSFER THE CHOPPED OFF VALVE TO A VALVE MOUNTING DEVICE. THE FOLDING DEVICE MAY CONSIST OF TWO PAIRS OF OPTIONALLY FREELY ROTATING, PERPENCIDULARLY INTERSECTING PINS. THE GUIDING DEVICE MAY CONSIST OF TWO CHANGE-DIRECTION IRONS POSITIONED IN THE SAME PLANES AS THE ONES IN WHICH THE WEBS COME OUT OF THE FOLDING DEVICE. THE DRIVING APPARATUS MAY BE POSITIONED BETWEEN THE GUIDING DEVICE AND THE CHOP-OFF DEVICE, AND MAY CONSIST OF ROTATABLY DRIVEN DRIVING ROLLS FOR EACH OF THE WEBS, IN WHICH THE CENTRE LINES OF THE DRIVING ROLLS ARE AT AN ANGLE WITH RESPECT TO EACH OTHER WHICH IS EQUAL TO THE SUPPLEMENT OF THE ANGLE AT WHICH THE FOLDED WEBS WITH THE OPEN SIDES FACING EACH OTHER CAN BE SHIFTED INTO EACH OTHER. THIS ANGLE IS PREFERABLY ABOUT 2 X 5d. THE GLUEING DEVICE MAY COMPRISE TWO NOZZLE PIPES WHICH CAN COVER THE OVERLAP OF THE SHIFTED1 FOLDED WEBS WITH GLUE. THE CHOP-OFF DEVICE AND THE GRABBING DEVICE ARE PREFERABLY MECHANICALLY COUPLED. THE INVENTION WILL BE ELUCIDATED HEREAFTER ON THE BASIS OF THE DRAWING, IN WHICH BY MEANS OF AN EXAMPLE AN INSTALLATION ACCORDING TO THE INVENTION IS SHOWN. IN THE DRAWING, FIG. 1 SHOWS AN OUTLINE OF THE INSTALLATION IN QUESTION IN PERSPECTIVE, FIG. 2 SHOWS AT A LARGER SCALE THE UPPER PORTION OF THE FOLDING DEVICE IN PERSPECTIVE, AND FIG. 3 SHOWS AT A LARGER SCALE THE GUIDING DEVICE AND THE OTHER DEVICES POSITIONED NEARBY IN PERSPECTIVE. THE INSTALLATION SHOWN IN FIG. 1 FOR MANUFACTURING CONICAL OBJECTS SUBSTANTIALLY COMPRISES TWO PARALLEL, HORIZONTAL SHAFTS 1 AND 2 FOR ROTATABLY SUPPORTING TWO ROLLS 3 AND 4 OF FLEXIBLE MATERIAL, IN WHICH ROLL 3 PROVIDES AN UPPER WEB 5 AND ROLL 4 A LOWER WEB 6. BOTH WEBS 5 AND 6 PASS THROUGH A FOLDING DEVICE 7, SHOWN IN MORE DETAIL IN FIG. 21 AND IN WHICH THE WEBS ARE NOT ONLY FOLDED IN TWO BUT ALSO CHANGED IN DIRECTION OVER 900. AFTER THAT THE WEBS 5 AND 6 ENTER A GUIDING DEVICE 8 IN WHICH THE FOLDED WEBS ARE SHIFTED INTO EACH OTHER WITH THE OPEN SIDES FACING EACH OTHER. AT THAT POINT THERE IS ALSO A DRIVING APPARATUS 9, A CHOP-OFF DEVICE 10, A GLUE SUPPLY 111 BEING ELUCIDATED IN MORE DETAIL IN FIG. 3, AND A GRABBING DEVICE 12 WHICH TRANSFERS THE FINISHED CONICAL VALVE, AFTER IT HAS BEEN CHOPPED OFF PERPENDICULAR TO THE BISECTRICE OF THE ANGLE BETWEEN THE WEBS, TO A VALVE MOUNTING DEVICE (NOT SHOWN). THIS LATTER ACTION PARTICULARLY IMPLIES, THAT THE NEW VALVE IS DIRECTLY USED IN THE USUAL MANNER FOR FINISHING A BAG. THE ACTION OF THE TWO WEBS BEING SHIFTED INTO EACH OTHER WILL CONTINUE UNDISTURBED IN ORDER TO FORM THE NEXT CONICAL VALVE. IN FIG. 2 THE UPPER HALVE OF THE FOLDING DEVICE 7 IS SHOWN, IN WHICH IT IS UNDERSTOOD THAT THE LOWER HALVE IS THE SYMMETRICALLY REFLECTED IMAGE OF FIG. 2. THE UPPER HALVE OF THE FOLDING DEVICE CONSISTS OF TWO PAIRS OF OPTIONALLY FREELY ROTATING, PERPENDICULARLY INTER SECTING PINS 13 AND 14. THE PIN 14 SUPPORTING THE WEB FOLDED IN TWO, NATURALLY HAS A LENGTH BEING ABOUT HALF THE LENGTH OF PIN 13 WHICH SUPPORTS THE STILL UNFOLDED WEB. THE GUIDING DEVICE 8 COMPRISES TWO CHANGE-DIRECTION IRONS 15 AND 161 POSITIONED IN THE SAME PLANES AS THE ONES IN WHICH THE WEBS 5 AND 6 COME OUT OF THE FOLDING DEVICE 7. THIS IMPLIES THAT THE WEBS 5 AND 6 ARE GUIDED ABOUT IN SUCH A MANNER, THAT THEY PREFERABLY MOVE 50 TOWARDS EACH OTHER TWICE AT AN ANGLE AND REMAINING IN THE SAME PLANE. AFTER THIS, THE OPEN SIDES OF THE WEBS 5 AND 6 ARE POSITIONED ON THE INSIDE OF THE SAID ANGLE. THE DRIVING APPARATUS 9 CONSISTS OF TWO ROTATABLY DRIVEN DRIVING ROLLS 17 AND 18 WITH CENTRE LINES BEING AT A MUTUAL ANGLE WHICH IS EQUAL TO THE SUPPLEMENT OF THE ANGLE AT WHICH THE OPEN SIDE OF THE FOLDED WEB 6 IS SHIFTED THROUGH THE DRIVING ROLL 18 INTO THE OPEN SIDE OF THE FOLDED WEB 5. THIS ANGLE IS OPTIONAL, BUT PREFERABLY IT IS ABOUT 2 X 50. IN THE SHOWN EMBODIMENT THE DRIVING ROLLS 17 AND 18 PULL THE WEBS 5 AND 6 BOTH ABOUT THE CHANGE-DIRECTION IRONS 15 AND 16 OF THE GUIDING DEVICE 8 AND OVER THE OPTIONALLY FREELY ROTATING PINS 13 AND 14 OF THE FOLDING DEVICE 7. THIS GUARANTEES THAT CORRECT FOLDS ARE APPLIED AND THAT THE WEBS ARE SHIFTED INTO EACH OTHER CORRECTLY. IN FIG. 3 THE POSITION OF THE CHOP-OFF DEVICE 10, THE GLUE SUPPLY 11, AND THE GRABBING DEVICE 12 WITH RESPECT TO EACH OTHER ARE SHOWN. THE GLUE SUPPLY CONSISTS OF TWO NOZZLE PIPES 19 AND 20 THAT CAN COVER THE OVERLAPS 21 WITH GLUE. AS SOON AS THAT HAS BEEN DONE, THE CHOP-OFF DEVICE 10 AND THE GRABBING DEVICE 12 START ACTING IN THE KNOWN MANNER TO TRANSFER THE FINISHED VALVE TO A VALVE MOUNTING DEVICE (NOT SHOWN) IT IS REMARKED, THAT ALTHOUGH THE INVENTION IS DESCRIBED ON THE BASIS OF AN INTALLATION FOR MANUFACTURING CONICAL VALVES, THE MERIT OF THE INVENTION CAN OF COURSE ALSO BE APPLIED IN THE MANUFACTURE OF OTHER CONICAL OBJECTS,

Claims: CLAIMS 1. INSTALLATION FOR MANUFACTURING CONICAL OBJECTS FROM TWO WEBS OF FLEXIBLE MATERIAL WHICH CAN BE FED FROM ROLLS INTO THE INSTALLATION, CHARACTERIZED IN THAT THE INSTALLATION COMPRISES: - A FOLDING DEVICE (7) THAT CAN FOLD IN TWO SAID WEBS (5 AND 6) LENGTHWISE - A GUIDING DEVICE (8) THAT CAN SHIFT SAID FOLDED WEBS INTO EACH OTHER WITH THE OPEN SIDES FACING EACH OTHER, - A DRIVING APPARATUS (9) - A CHOP-OFF DEVICE (10)1 AND - A GLUEING DEVICE (11). 2. INSTALLATION ACCORDING TO CLAIM 1 FOR MANUFACTURING CONICAL VALVES FOR BAGS, CHARACTERIZED IN THAT A GRABBING DEVICE (12) IS MOUNTED WHICH IS ABLE TO TRANSFER THE CHOPPED-OFF VALVE TO A VALVE MOUNTING DEVICE. 3. INSTALLATION ACCORDING TO CLAIM 1 OR 21 CHARACTERIZED IN THAT THE FOLDING DEVICE (7) CONSISTS OF TWO PAIRS OF OPTIONALLY FREELY ROTATING, PERPENDICULARLY INTER SECTING PINS (13, 14). 4. INSTALLATION ACCORDING TO ANY OF THE PRECEDING CLAIMS 1-31 CHARACTERIZED IN THAT THE GUIDING DEVICE (8) CONSISTS OF TWO CHANGE-DIRECTION IRONS (15, 16) POSITIONED IN THE SAME PLANES AS THE ONES IN WHICH THE WEBS (5 AND 6) COME OUT OF THE FOLDING DEVICE C7). 5. INSTALLATION ACCORDING TO ANY OF THE PRECEDING CLAIMS 1-4, CHARACTERIZED IN THAT THE DRIVING APPARATUS (9) IS POSITIONED BETWEEN THE GUIDING DEVICE (8) AND THE CHOP-OFF DEVICE (10), AND CONSISTS OF ROTATABLY DRIVEN DRIVING ROLLS (17 AND 18) FOR EACH OF THE WEBS, IN WHICH THE CENTRE LINES OF THE DRIVING ROLLS ARE AT AN ANGLE WITH RESPECT TO EACH OTHER WHICH IS EQUAL TO THE SUPPLEMENT OF THE ANGLE AT WHICH THE FOLDED WEBS WITH THE OPEN SIDES FACING EACH OTHER CAN BE SHIFTED INTO EACH OTHER. 6. INSTALLATION ACCORDING TO CLAIM 51 CHARACTERIZED IN THAT THE ANGLE AT WHICH THE FOLDED WEBS ARE SHIFTED INTO EACH OTHER, IS SUBSTANTIALLY TWO TIMES 50. 7. INSTALLATION ACCORDING TO ANY OF THE CLAIMS 1-6, CHARACTERIZED IN THAT THE GLUEING DEVICE (11) COMPRISES TWO NOZZLE PIPES (19 AND 20) WHICH CAN COVER THE OVERLAP OF THE SHIFTED, FOLDED WEBS WITH GLUE. 8. INSTALLATION ACCORDING TO ANY OF THE CLAIMS 1-7, CHARACTERIZED IN THAT THE CHOP-OFF DEVICE (10) AND THE GRABBING DEVICE (12) ARE MECHANICALLY COUPLED. 9. INSTALLATION AS SHOWN IN THE DRAWING AND/OR DISCUSSED ON THE BASIS THEREOF.

Inventors: EURLINGS, ROBERT MARIA JOZEF HUBERT
Applicants: BATES CEPRO B.V.
Application year: 1986
Main classification: B31B19
IPC codes: B31B19, B31B25