Abstract:
The tire shredder has a frame supporting two parallel, vertically spaced rails on which are mounted a wheeled carriage. A variable speed, bi-directional motor provides reciprocating movement of the wheeled carriage on the tracks. The wheeled carriage supports a cutting assembly which includes a drive motor, a shaft and a plurality of circular saws mounted on the shaft for rotation with the shaft. The shaft is mounted with its axis of rotation parallel to the direction of movement of the carriage. Tires are fed to the circular saws by a conveyer system. A bottom conveyer carries the tires substantially parallel to the floor. A top conveyor, is positioned above the first conveyer, slanting downwardly toward the bottom conveyor from the opening for the tires to the discharge point adjacent the saws. Both conveyers are driven by a variable speed motor.
Abstract:
A rubber crumbing apparatus and method for making crumb rubber from tire chips is disclosed. The rubber crumbing apparatus comprises a frame assembly, a first cone assembly including a truncated cone having an interior surface and an opening extending therethrough, and a second cone assembly positioned substantially within the first cone assembly. The second cone assembly includes a truncated cone having an exterior surface in opposing relationship to interior surface of the first truncated cone. The second cone assembly rotates relative to the first cone assembly. A plurality of crumber blades are connected to one of the opposing surfaces and a plurality of beads are attached to the other opposing surface of the truncated cones. The crumber blades are in close proximity to said beads without contacting said beads as the second cone assembly rotates relative to the first cone assembly. Tire chips are fed between the truncated cones. The close proximity of the crumber blades and the beads as the second cone assembly rotates tears the rubber from the tire chips to make crumb rubber.
Abstract:
Apparatus for reducing to particles tread portions and beaded side wall portions of vehicle tires, particularly extra large vehicle tires, or for preparing such vehicle tires for recapping, comprises a tire holder assembly, having a paired set of dual jacks carried by opposite ends, respectively, of elongate, rigid, tire clamping frames, and a rotary, cutter blade assembly made up of a side-by-side series of disks carrying cutter blades of chisel type offset from one another to provide a helically oriented series of such cutting blades. Opposite side and end members of each of the frames provide for clamping corresponding side wall beads of a received tire, while opposite ends of opposite end members of the respective frames, usually clamping corners thereof, span respective chords of the circumferences of corresponding beads of the tire. When the tire is to be recapped, arcuate attachments are secured to the mutually spaced, opposite, clamping corners of the ends of the frames that contact a corresponding tire bead. An optional but important feature of the invention is the progressive cutting of the tire in a cryogenic atmosphere which freezes exposed surfaces of the tire, and the mounting of a group of separate, residual, beaded side wall portions of sequentially cut tires in the tire holder assembly of the same apparatus for cutting such side wall portions down to the heavily reinforced beads thereof.
Abstract:
Shredding machines and a process for recycling used vehicular tires comprising a primary shredder and process, a secondary shredder and process, a granulator and a first process, a material separating means and process, and a granulator and a second process. The primary shredder having parallel counter rotating shafts to which a plurality of cylindrical spur gear-shaped cutters with teeth are attached at proportional distances. The shafts are positioned relative to one another such that a cutter attached to the first shaft fits in the proportional space between two identical cutters on the second shaft. The edges of the top lands and bottom lands of each cutter tooth perform the cutting operation. Thus the power requirement of the primary shredder can be reduced by nearly 90%. The secondary shredder having a reel-type cutter known in the art. The granulator comprising an improved grinding machine with mating grinding discs with working surfaces separated by a controlled gap. A magnetic conveyor and shaker conveyor separate the metal wires and polyester fibers from the rubber particles. Finally, the rubber is processed in the granulator a second time with a reduced controlled gap between the working surfaces of the mating grinding discs. All of the aforementioned machines also comprise components of a corresponding rubber recycling process in which the rubber may be reused as fuel in a power producing plant, as an additive in the manufacture of asphalt, or any other desired use.
Abstract:
A motor truck for use in collecting and processing solid waste material such as scrap tires. The truck includes a chassis including a cab; a body structure positioned on the chassis behind the cab and defining a storage chamber; a shredder mounted on top of the body structure forwardly of the storage chamber; a compactor positioned within the body structure beneath the shredder and forwardly of the storage chamber; and a conveyor system for conveying tires from a curbside location upwardly for discharge downwardly into the open upper end of the shredder. The shredded tires are discharged downwardly into the body structure rearwardly of the compactor, whereafter the compactor is actuated to stroke rearwardly and compress the tire shreds into the storage chamber. After the truck has visited a series of retail tire outlets and the storage chamber is full of tire shreds, the truck returns to a recycling center where a door at the rear of the storage chamber is opened and the compactor is utilized as an ejector to eject the tire shreds from the storage chamber. At the recycling center the tire shreds are processed to form a rubber crumb material and the rubber crumb material is combined with scrap plastic to form a rubber/plastic resin compound in pellet form.
Abstract:
There is disclosed a tire shredding machine of the type having oppositely rotating rotors mounting interdigitated cutting elements, which is particularly adapted for use in the further reduction of relatively large size rubber chips presently produced by use of commercially available primary tire shredding machines. The present machine incorporates an improved segmented knife retention assembly and a stripper or knife cleaning assembly.
Abstract:
A machine for reducing worn-out vehicle tires to small chip-like particles comprises a frame on which an elongated shaft is journaled for rotation, the shaft having a first and second plurality of rotary cutting blades, each of a different diameter affixed to the shaft so as to be rotatable therewith. Also affixed to the frame is a set of stationary cutter bars whose sharpened edges are disposed within a predetermined close tolerance to the periphery of the rotary cutting blades. A large, massive flywheel is attached to one end of the shaft and is driven by a suitable motor. Surrounding the rotary cutting blades is a shroud which, in turn, suppots an infeed hopper having a spiked drum journaled therein. A chain and sprocket combination couples the infeed drum to the elongated shaft such that when the shaft is driven and relatively large chunks of vehicle tire material is placed into the infeed hopper, it will be forced between the teeth of the rotary cutting blades and hence carried by the rotary cutter through the stationary cutter bars.
Abstract:
A compactly unitized machine for shredding waste automotive vehicle tires or the like comprising a frame, a shredder, a shredded scrap receiving classifier, and an elevator for carrying oversized scraps rejected by the classfier back to the shredder; said frame, shredder, classifier and elevator are of such configurations and are so relatively arranged and supported upon said frame as to comprise a compactly unitized three-dimensionally minimally sized unit. The classifier per se is of improved construction and operating characteristics.