Patent GB-1104689-A (GB)
Title: A process and device for conveying and joining parts of gummed cord material
Inventor: JAVORIK ZDENEK
IPC: B29D30/44
Filed: 1966-04-29
Abstract: 1,104,689. Seaming non-metallic sheet material. CESKOSLOVENSKE ZAVODY GUMARENSKE A PLASTIKARSKE. 29 April, 1966, No. 18943/66. Heading B5K. Cut parts D of a gummed cord material are conveyed from a cutting bench to a receiving bench 39 and joined by overlapping and pressing together those edges of the parts D which are parallel to the cord threads, by an arm 4 (or 5), one end of which is pivotally mounted on a vertically movable pivot 7 and the other end of which is coupled to a pivotable suction nozzle 1 (or 2), and an arrangement for moving the nozzle 1 (or 2) relative to the arm 4 (or 5) through a predeterminzd angle which depends on the bias angle a and the direction of removal of the parts D. As shown, two suction nozzles 1, 2 are rotatably coupled by a pivot 3 to the arms 4, 5 rigidly connected to a sleeve 6 connected to the pivot 7 which is rigidly connected to a piston 8 in a pneumatic cylinder 9 coupled to a carriage 10 movable on rails 11. A shaft 12 is secured to the carriage 10 and carries a worm wheel 13 driven by a motor 16. A draw-rod 18 is coupled to an eccentric pivot 17 on the worm 13 and to a crank 19 secured to the sleeve 6. Each nozzle 1, 2 is provided with openings (20), Figs. 3 and 4 (both not shown), in the lower wall thereof and the inner cavity thereof is divided into chambers by parallel walls (21) connected by openings (23) closable by valves (24) operable by levers (25). Fan-like screens (27) are pivoted at (26) to each nozzle and the upper surface of each screen (27) lies on an arched ledge (28) secured to the upper nozzle wall and the lower surface is pressed against the perforated lower nozzle wall. A pneumaticallyoperated shutter (29) is arranged above the pivot (3) so that the nozzle is connected either to the suction pipe or to the pressure pipe of a fan 30, see also Fig. 1, driven by a motor 31 on a plate 32. A lever 33 connected to the plate 32 slides on a curved rail 34 between a fixed stop 36 and a movable stop 35 to limit the angle of rotation of the plate 32. This rotation is effected by a piston 37 of a pneumatic cylinder 38 pivoted to the arm 4 or 5. Receiving benches 39, 40 are each provided with two endless conveyer belts (not shown), the drive of which is actuated by a double arm lever (41), Fig. 5 (not shown). In operation, the device is set by adjusting the position of the stops 35 on the rails 34 to alter the turning angle of the nozzles 1, 2, by moving the screens (27) to a position parallel to the feed direction of the parts D, and by closing the openings (20) situated beyond the width of the parts D by the valves (24). When a part D is placed on the cutting bench beneath the nozzle 1, the piston 8 presses the nozzle 1 against the part 9 and the shutter (29) turns to connect the nozzle 1 to the suction pipe of the fan 30 so that the part D is held against the openings (20). The nozzle 1 is lifted and the worm 13 is rotated through 180 degrees to rotate the crank 19 together with the arms 4, 5 through 90 degrees to position the nozzle 1 above the bench 39 and the nozzle 2 which was above the bench 40 moves above the middle of the following part D. As the nozzles 1, 2 are turned they are also swivelled about their pivots 3 through the bias angle α, the nozzle 1 clockwise and the nozzle 2 anti-clockwise. The nozzles 1, 2 are moved downwards by the piston 8. The shutter (29) swings to connect the nozzle to the pressure pipe of the fan 30 so that the part D is released from the lower wall of the nozzle to overlap the preceding part by an amount X and to be joined thereto. When the part D is pressed on to the bench 39 the lever (41) is depressed to drive the belts, through a time delay, to feed the part D in the direction B until the lever (41) is released. The device can be used for conveying and joining tyre cord materials having naught crossing angle of cords. In this case, the turning gear which turns the nozzle 1 or 2 by the bias angle is non-active.