Patent GB-504820-A (GB)
Title: Improvements in and relating to wrapper carrier mechanism for cigar making machines
IPC: A24C1/28
Filed: 1937-08-24
Abstract: 504,820. Cigar - making machines. INTERNATIONAL CIGAR MACHINERY CO. Aug. 24, 1937, No. 23165. Convention date, Sept. 25, 1936. [Class 130] By means of a movable operating cam 26 and a stationary controlling cam 47, a wrapper carrier 36 is moved in a unidirectional manner along an irregularly curved or non-circular closed path 48 from and back to a wrapper receiving position to deliver the wrappers to a wrapping device. As shown, the carrier 36 is secured to a holder 35 rotatably mounted in the hollow arm 33 pivotally connected by a bolt 34 to a hollow arm 31 secured to the lower end of a hollow shaft 25, which communicates through a hollow arm 23, a forked hollow column 10 and a cam-actuated valve 13 with a casing 12 connected to a suction-producing device. A rotating shaft 17 extending through the column 10 carries at its upper end the cam 26, which has on its lower face cam grooves 27, Fig. 5, engaging in turn with rollers 28 carried by a disc 29 on the shaft 25 in order to rotate the shaft in a clockwise direction when the cam 26 turns in a counterclockwise direction. The holder 35 for the carrier 36 is secured to the lower end of a shaft 39 carrying at its upper end an arm 41, and rollers 44, 43 on the arm 41 and on a lateral projection of the arm 33 engage cam grooves 46, 45. in the lower side of the stationary cam 47, which is secured to the bearing portion 24 of the arm-23. The travel of the roller 43 in the cam groove 45 turns the arm 33 about the axis of the bolt 34 to cause the wrapper carrier to travel along the path 48, and the travel of the roller 44 in the cam groove 46 turns the carrier 36 about the axis of the shaft 39 into different operative positions at different points in its path. From the wrapper-receiving position shown in full lines in Fig. 4, to the dotted-line position 36<1>, the carrier is moved towards the shaft 25 by the groove 45 and is turned backwards about its axis by the groove 46 to clear the column 10. In the position 361 a dab of paste is applied to the flap end of the wrapper and the tuck end is moved down on to the bunch B by a tuck needle to start the wrapping operation. In its movement along the upper part of the path 48, the carrier is turned about its axis and then moves substantially parallel to itself through a wrapper-delivery position 36<11> to a position 36<111>, after which it is turned backwards through nearly half a revolution during its return to the initial position over the cutting bed. This backward turn is effected bv the engagement of a gear segment 52 on the hub of the arm 41 with a gear segment 53 on the lower side of the cam 47. The carrier 36 is divided by a partition 57 into chambers connected by a valve 58, which is held open by a spring so long as the wrapper covers perforations 61 in the face of the forward chamber, but closes when air is admitted through these perforations. Suction is then applied only to perforations 62 until the remainder of the wrapper has been drawn from the carrier, whereupon suction is cut off by the closing of the valve 13. A spring-actuated cover 50 at the flap end of the carrier normal) closes an aperture 51 in the carrier but is moved aside at the end of the wrapping operation by a stationary nozzle supplied with air from a compressor. The carrier is arranged to pick up a wrapper W from one of a pair of cutting beds 88, Fig. 10, and to deliver it to a cigar bunch B supported within a wrapping device 77, to which the bunch is delivered from an end-shaping device 78, the wrapped bunch being delivered by a transfer device 79 to a re-rolling device 83. In a modification, for use with a single-wrapper cutting bed, the gear segments 52, 53 are omitted and the groove 46 is so shaped that the carrier is reversed end for end in the wrapperreceiving position with respect to its position in Fig. 4, and is given only a slight turning movement upon reaching the position 36<111> after delivering the wrapper. Specification 504,819 is referred to.