Improvements in machines for positioning boxes, packages or the like for tying them with wire, for winding the wire around the positioned package, while keeping the wire under tension, twisting or tying and cutting the wire

摘要

206,927. Parker, G. D. Aug. 17, 1922. Parcelling by bundling.-Relates to machines for binding boxes, packages, shooks, &c. with wire. The feeding of a box to the binding station sets in motion mechanism for feeding the wire, winding it around the packages &c. a predetermined number of turns, twisting the ends together, severing the ends, and returning the various parts to the initial positions for the binding of another box. Boxes &c. 2 are placed in the position A, Fig. 4, by hand or otherwise, and are moved to the left on a table 1 by chains 4 with forwarding members 5 to the binding position B, depressing a lever 51 against the action of a spring 52 to rotate a shaft 50 and to operate links 48, 49, Fig. 1, to connect an actuating shaft 23 with a source of power 25. A roller 24, Fig 4, on an arm 22 on the shaft 23 engages one of two radial slots 16 in a driving plate 15 and rotates a shaft 14 through a half turn. At the positions of rest of the plate, a finger 20 on a dog 18 engages a notch and in the periods of rotation the shaft 14 drives the conveyer chain 4 in intermittent steps by means of a chain 12 and sprockets 13. The box 2 is held in the position B by vertically and laterally adjustable clamps 62 carried on a bar 56 operated by a cam 53 on the actuating shaft 23, and the wire winding operation begins, similar sets of winding mechanism being disposed at each end of the machine. In each set, wire 68 is led from a reel 63, Figs. 3 and 4, through a hollow horizontal shaft 69, over an adjustable tension device, and through a tube 72 on a radially adjustable winding arm 71. Segmental gears 79, Fig. 15, are actuated to rotate the winding arms 71 a predetermined number of times around the end of the box, a clamp 109, Fig. 40, holding the free end of the wire. Twisting mechanism, Figs. 1, 35 and 40, then comes into operation, a set being disposed to deal with each convulution of wire. Each set comprises an arm 118 with flaring guide jaws 124 and carrying a spindle 121 with a radial slot 122 sufficiently narrow in the central portion to grip two wires. The spindle carries gear teeth 125 meshing with a gear segment 126 adjustably mounted on the shaft 119. In the first part of the action the arm 118 and the gear segment travel as a unit from the position shown in Fig. 1 until the arm 118 is vertical as in Fig. 35, by which time the wires have been engaged by the guide jaws 124 and lie within the slot 122 of the twisting spindle. The arm 118 is then arrested and the gear segment 126 travels through a further right angle, rotating the spindle 121 and twisting the wire together as shown in Fig. 40. Both segment and arm then move back as a unit through a right angle, and the segment continues to move alone through a further right angle to bring the parts back to the initial position. The ends of the wires are cut after the twisting by cutting blades 151, Fig. 40, on an oscillating shaft 150, the right hand clamp in this Figure retaining the end of the wire in readiness for another cycle of operations. Each succeeding box is wound in opposite directions, the successive movements of the winding arm 71 being shown in Figs. 42 and 43. In one cycle, the winding arm starts from the position x, Fig. 42, makes a predetermined number of turns around the box 2 in a clockwise direction, and comes to rest in the position y, Fig. 43. In the next cycle, the arm rotates in an anticlockwise direction as shown in Fig. 43. All the moving parts in the machine are driven bv the actuating shaft 23, which is set in motion by the arrival of a box at the binding position B. Fig. 4; the wire winding mechanism is longitudinally adjustable to deal with different sizes of boxes, and also adjustable to vary the number of turns of wire around each end: and the segmental racks 126 are adjustably connected to the shafts 119 in order to vary the operation of the twisting mechanism.