WO1998024607A1 - Procede et dispositif servant a obtenir de la poudre de caoutchouc a partir de pneus de rebut - Google Patents

Procede et dispositif servant a obtenir de la poudre de caoutchouc a partir de pneus de rebut Download PDF

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Publication number
WO1998024607A1
WO1998024607A1 PCT/AU1997/000830 AU9700830W WO9824607A1 WO 1998024607 A1 WO1998024607 A1 WO 1998024607A1 AU 9700830 W AU9700830 W AU 9700830W WO 9824607 A1 WO9824607 A1 WO 9824607A1
Authority
WO
WIPO (PCT)
Prior art keywords
tyre
tread ring
sidewalls
rubber
crumb rubber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/AU1997/000830
Other languages
English (en)
Inventor
James S. Pincott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU51853/98A priority Critical patent/AU5185398A/en
Publication of WO1998024607A1 publication Critical patent/WO1998024607A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/003—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber
    • B26D3/005—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber for cutting used tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0217—Mechanical separating techniques; devices therefor
    • B29B2017/0224—Screens, sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0268—Separation of metals
    • B29B2017/0272—Magnetic separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/08—Transition metals
    • B29K2705/12—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the field of the invention is process and apparatus for making crumb rubber from scrap tyres.
  • cryogenics have been used in the past to make crumb rubber by making the rubber brittle using liquid nitrogen and then shattering the tyre into a powder or crumb by the use of a hammer mill.
  • "Crumb rubber” as used herein is rubber of small particle size and usually includes particles which pass through a ten-mesh or finer screen.
  • U.S. Patent 5,522,559. Some other examples of apparatus for recovering crumb rubber from rubber tyres are disclosed in U.S. Patents Nos. 2,471,043; 4,422,581; and 4,738, 172.
  • U.S. Patent No. 5,23 5,888 discloses an apparatus with fixed blades for cutting through the sidewalls of a tyre to separate the sidewalls from the tread ring.
  • U.S. Patent 4,770,077 discloses a cutting arrangement with two knife blades for removing the bead portion of the sidewall. The only purpose of removing the sidewalls in U.S. Patent 5,235,888 was stated to be to reduce each tyre volume, thereby using less landfill space.
  • Patent 4,770,077 is directed to removing the beads from the tyre so that the hard wire and rubber reinforcing in the tyre casing is removed before shredding the tyre to reduce subsequent down time and damage during a shredding operation.
  • the present invention relates to a process and apparatus wherein a mixture of scrap tyres is first separated into two groups, a passenger tyre group and a truck tyre group. Then, the sidewalls of each passenger tyre are separated from the tread ring, followed by a separate buffing or grinding to produce crumb rubber from the sidewalls and tread rings.
  • the truck tyres are first processed by removing the sidewalls from the tread ring and then sending the tread rings through a tread ring crumber.
  • the sidewalls are processed separately from the tread ring of each tyre to remove the tread bead. Then the sidewalls are sent to a grinder and further processed to produce the crumb rubber.
  • the tyre When removing the sidewalls from a truck tyre, the tyre is positioned substantially vertically and while thus supported rotating knives are simultaneously engaged with the portion of the sidewall adjacent to or near the tread ring, with the knives positioned at an upwardly inclined angle during the cutting operation.
  • the tread ring after the sidewalls have been separated, is separately processed by an apparatus and process in which the ring is placed under tension in an elongated form. Then, preferably through a cam action, a buffing or grinding rasp blade wheel is engaged with the external surface of the tread ring to gradually remove crumb rubber from the tread ring.
  • the tread area compound is usually different from that used in the tread area of passenger tyres and is different from the compound used in the inner portion of the tyre.
  • the present invention it is possible to control and determine the type of rubber composition of the finished rubber crumb, as distinguished from the prior art where passenger and truck tyres were shredded together so that the different types of rubber were mixed together as the final crumb rubber.
  • Fig. 1 is a flow diagram of the process of this invention, illustrating the preferred steps for producing crumb rubber
  • Fig. 2 is an elevation of the apparatus for receiving a tyre tread ring after the sidewalls have been removed, but prior to elongating or placing the tread ring under tension for the buffing or grinding operation;
  • Fig. 3 is a view of the apparatus of Fig. 2 taken on line 3-3 of Fig. 4 after the tread ring has been placed under tension and is in an elongate shape as it is contacted by a buffing or grinding wheel to remove the crumb rubber from the external surface of the tread ring;
  • Fig. 4 is an end view of the apparatus of Figs. 2 and 3, with the apparatus in the operating position of Fig. 3.
  • Fig. 5 is an elevation of the apparatus of this invention for cutting the sidewalls to separate them from the tread ring, illustrating the tyre initially mounted on the apparatus prior to moving the tyre upwardly into the cutting position;
  • Fig. 6 is a view of the apparatus of Fig. 5, but showing it in the upper position during the cutting of the sidewalls from the tread ring;
  • Fig. 7 is a view on line 7-7 of Fig. 6 showing a side view of the apparatus of Figs. 5 and 6 when positioned for cutting the sidewalls from the tread ring.
  • the present invention provides a method and apparatus in which passenger tyres and truck tyres are first separated and then separately processed to produce crumb rubber which can then be sized and bagged for commercial use. Since the rubber in the sidewall of the tyre and on the outside and inside of the tread ring are usually different types of rubber, the crumb rubber produced by this invention can also be processed to produce such different types of rubber separately.
  • the crumb rubber can be used as a filler material in rubber products, in rubberised bitumen/asphalt, or can have polymers added to produce a variety of rubberised materials.
  • One use is to form a flexible base for pathways roads, or surfaces such as tennis courts.
  • the method and apparatus of this invention utilises less costly equipment with motors requiring less horsepower and with less capital outlay than presently commercially known operations such as where scrap tyres are processed through a shredder as a whole tyre or as chopped up pieces of a whole tyre. Because of a lower cost and lower horsepower requirements, it is practical for a processor using the method and apparatus of this invention to receive tyres from a local community or region, thus eliminating the expense of transporting tyres over long distances to a location where large, more powerful equipment is located.
  • both truck and passenger scrap tyres are received at a location where the apparatus of this invention is located, and such scrap tyres are sorted to separate the passenger tyres from the truck tyres.
  • the passenger vehicle tyres first have the sidewalls removed from the tread ring at 10 using any cutting blade in which the blades engage the sidewall adjacent to or in proximity to the tread ring with equipment which may be of the type shown in U.S. Patent 5,235,888 or 4,770,077 or of the type to be described hereinafter with respect to Figs. 5-7, but with fixed blades and means for rotating the tyre relative to the fixed blades.
  • tread ring crumber 11 an example of which is shown in Figs. 2, 3 and 4.
  • the sidewalls of the passenger tyres do not normally have metal wire reinforcing, but they do have a bead wire which may be removed as indicated at 12.
  • the sidewalls are abraded or buffed with any conventional rasp blades at 14. Examples of suitable rasp blades are shown in U.S. Patent Nos. 4,747, 194 and 5,301,406.
  • She crumb rubber is passed to a cyclone and aspirator where any fibrous fluff is removed by suitable conventional equipment.
  • the crumb rubber passes from the reduction mill 15 to a magnetic separator 16 which is preferably of the known cross belt type, and then to a conventional aspirator where any fibrous fluff is removed by conventional equipment.
  • the crumb rubber than passes to a conventional rotary drum magnetic particle separator where any steel particles are removed.
  • the crumb rubber which is now free of magnetic wire particles and also fluff is passed through a conventional rotary sieve, which is preferably a long cylindrical sieve having perforations of different opening sizes so that the smaller particles are first allowed to drop by gravity into a bag or other receptacle and then the sieve openings are progressively larger along the cylindrical sieve so that additional separations by the size of the rubber crumb fall into a series of bags or receptacles.
  • a conventional rotary sieve which is preferably a long cylindrical sieve having perforations of different opening sizes so that the smaller particles are first allowed to drop by gravity into a bag or other receptacle and then the sieve openings are progressively larger along the cylindrical sieve so that additional separations by the size of the rubber crumb fall into a series of bags or receptacles.
  • the crumb rubber passes through the rotary sieve 20.
  • the sieving operation 20 if there are any oversize particles that exit from the sieve, they are passed through a mill 23 of any conventional type for further reducing the size of the crumb rubber and then that crumb rubber is returned and passed through the rotary sieve again.
  • the final products 25 of various sizes in bags or packages are available for sale or use depending upon the size and/or type of rubber.
  • the truck tyres first pass to a truck sidewall removal apparatus 30, the preferred form of which is shown in Figs. 5-7, and which will be explained hereinafter.
  • the tread rings are taken to the tread ring crumber 11, the preferred form of which is illustrated in Figs. 2-4, and which will be described in detail hereinafter.
  • the truck tyre bead is next removed at 31 and the steel wire of the bead is scrap which is discarded.
  • the sidewalls are then passed to a modified conventional type shredder/grinder 32.
  • the carcass of each tyre which has been passed through the tread ring crumber 11 may be sent to the grinder 32 as indicated at path 33.
  • the rubber crumb is next passed to a magnetic separator 35 of any conventional type, preferably the cross-belt type, and then is passed to a modified conventional type reduction mill 36.
  • the rubber crumb is next preferably passed through a cyclone separator 37 and an aspirator 38 to separate out fluff and solid particles other than rubber crumb.
  • the rubber crumb is then preferably passed through a second magnetic separator 40 which is preferably of the known cross-belt type so that any scrap steel wire is discarded and then the crumb rubber is discharged to the rotary sieve 20 where it is sized as explained above.
  • the letter A designates generally the preferred apparatus for removing the crumb rubber from the tread ring after the sidewalls have been removed.
  • the apparatus A has an external framework 50 which has legs 50a which are adapted to rest on the ground or base P.
  • the legs 50a are interconnected by horizontal framework members 50b, 50c, 50d, 50e and 50f and upright frame member 50g which is also part of the framework.
  • a support assembly 52 Disposed within the framework 50 is a support assembly 52 which includes upright members 52a and upper cross member 52b and a lower cross member 52c.
  • the upper cross member 52b is positioned between two bearings 53 which are attached to the upper frame member 50e (Fig. 4) by bolts or any other suitable means.
  • the support member 52b is connected to a pivot pin 54 which is pivotable in the bearings 53 to enable the support 52 to pivot relative to the framework at 50, as will be explained.
  • a tread ring T shown in dash-dot lines is initially loosely positioned as shown in Fig.
  • the lower roller 56 is shown in dash lines in Fig. 4.
  • a suitable motor 56c drives the roller 56, whereas the surface 55c of the upper rotatable member 55 is frictionally rotated by the engagement of the tread ring T therewith during the driving of the roller 56, as will be more evident hereinafter.
  • the rotatable member 55 rotates on a shaft 55a which extends through the two-sided plates 55b of the rotatable member 55, and also through two spaced support plates 56a and 56b. Plates 56a and 56b have the same shape.
  • the surface 55c is slightly convex to facilitate retaining the tyre T centered thereon as the tyre T is being rotated. In Fig.
  • the plate 56a is shown partially in dash lines since the rotatable member 55 is in front of the plate 56a in Figs. 2 and 3 as can be seen in viewing Fig. 4.
  • Each of the plates 56a and 56b are welded or are otherwise secured to guide sleeves 57 which are also shown in dash lines in Figs. 2 and 3.
  • a pin 58 is connected to both of the plates 56a and 56b, and that pin 58 is connected to a piston rod or shaft 59.
  • the piston rod 59 fits into a cylinder 60 which is provided with a gas or fluid for either pneumatic or hydraulic action of a piston within the cylinder 60 to impart movement to the pin 58, the plates 56a and 56b, and thus to impart substantially vertical movement to the rotatable member 55, as will be explained more in detail.
  • the lower end of the cylinder 60 is preferably mounted to the lower support member 52c by a bracket assembly 61 which has a base plate 61a, all of which are welded or 5 otherwise secured to the support member 52c.
  • a pair of guide rods 63 are mounted substantially parallel to, and within the confines of the support frame 52, with their upper ends 63a welded or otherwise secured to the uprights 52a, and with their lower portions 63b held or otherwise affixed to the lower support
  • the guide sleeves 57 slide upwardly and downwardly on the guide rods 63 as the piston 59 and cylinder 60 are operated with pneumatic or hydraulic fluid.
  • a piston rod 66 which operates by pneumatic or hydraulic fluid by a piston (not shown) within a cylinder 67, has its end pivotally connected at 66a to the platform 61a.
  • the 15 cylinder 67 is pivotally connected at 67a to the member 50g.
  • a plurality of rasp blades of the type shown in U.S. Patent Nos. 4,747,194 or 5,301 ,406, or any other suitable rasp blades for forming rubber crumb are mounted on a conventional rasp blade hub 68 such as the hub disclosed in U.S. Patent No. 4,021,899 and 0 are driven by an electric motor 69 through a support shaft 69a.
  • a cam 70 is mounted on one of the frame members such as 50g and it is positioned so as to be contacted by a cam follower 71 which is on the upright 52a, when the assembly 52 is pivoted from its substantially vertical position of Fig. 2 to an inclined position of Fig.
  • the cam 70 is rotated by a suitable motor 70a and the shape of the cam is preferably as illustrated in Figs. 2 and 3 so that it is first engaged by the cam follower 71 at its maximum eccentricity and continues to be engaged by the cam follower 71 as the cam 70 rotates to engage its smaller diameter with the cam follower.
  • the support assembly 52 is moved to the inclined position of Fig. 3 by causing the pneumatic fluid in the cylinder 67 to retract the rod
  • the tread ring T is initially placed loosely on the rotatable support member 55 and also below the drive roller 56. This occurs when the assembly 52 is in the substantially vertical position of Fig. 2. Then the hydraulic or pneumatic system for the cylinder 60 is actuated by the conventional hydraulic or pneumatic system to move the piston rod 59 and therefore the pin 58 upwardly, which carries the plates 56a and 56b together with the sleeves 57 upwardly along the guide rods 63 until the tread ring T has been placed under tension in a stretched elongate condition.
  • the pneumatic system cylinder 67 and rod 66 are actuated to pivot the assembly 52 about the pivot bearings 53 so as to bring the cam follower 71 into engagement with the cam 70.
  • the motor 69 is actuated to cause the rotation of the rasp blades on the hub 68 which are then in engagement with the exterior surface of the tyre tread ring T which is also being rotated by rotating roller 56. Since the tread ring T engages the surface 55c of the rotatable member 55 under tension, the upper rotatable support 55 is rotated at the same time as the rotatable member 56.
  • the rod 66 is extended by the pneumatic pressure within the cylinder 67 to return the assembly 57 to the substantially vertical position of Fig. 2. Then, the piston 59 is retracted by the reversal of the pressure within the cylinder 60 to lower the rotatable wheel 55 to the position shown in Fig. 2, at which time, the tread ring T is easily removed from the rotatable member 55 and the drive wheel 56. In some cases it may be desirable to also turn the tread ring inside-out so as to expose the inner surface which is usually butyl rubber used to contain air in a tubeless tyre when inflated. After that reversal, the procedure described above with respect to Figs.
  • a limit switch 72 may be provided on the upper frame member 50a, which is engaged by a contact button 72a attached to the upright 52a so that the limit switch disengages the electrical power to the drive motor 56a to stop such motor from rotating the drive roller
  • Figs. 5-7 which is provided for the purposes of cutting the sidewalls from a truck tyre at a point adjacent to or in proximity to the tread ring T so as to separate the sidewalls W therefrom.
  • the sidewalls of a passenger tyre may be cut from the scrap tyre by using fixed blades which are forced into the sidewall while rotating the tyre, it has been found that because of the steel in the sidewalls of truck tyres, such prior art apparatus is usually unsatisfactory.
  • the present invention solves the problem of cutting the sidewalls to separate them from the tread ring.
  • the scrap truck tyre X is initially mounted without being inflated because the scrap tyres often will not hold the internal pressure. With this invention, it is unnecessary to inflate the scrap tyre.
  • the apparatus of Figs. 5-7 is generally designated with the letter B and it includes a framework 75 which has suitable upright or vertical members 75a, and horizontal members 75b.
  • the framework 75 is mounted on rollers 75c for movement of the apparatus on the ground or base P.
  • An idler roller 76 which is mounted on a support arm 77 is adapted to be positioned inside the upper part of the tyre as best seen in Fig. 5.
  • the tyre X is shown in dot-dash lines to facilitate an understanding of the invention with respect to the operable parts of the apparatus B.
  • the support arm 77 is pivotally connected to a bracket 78 by means of a pivot pin 77a.
  • the bracket 78 includes laterally extending members 78a and 78b which in turn are welded or are otherwise secured to laterally spaced and positioned sleeves 79.
  • the sleeves 79 are slidably positioned over guide rods 80 (Fig. 7) which are mounted in the framework 75.
  • a hydraulically or pneumatically operated piston is positioned inside of a cylinder 81 for the movement of a piston rod 81a upwardly from the lower position (Fig. 5) to the upper position (Figs. 6 and 7).
  • the upper end of the rod 81 is connected to the brackets 78a so that upon extending the rod 81a upwardly, it carries upwardly the brackets 78, 78a and 78b together with the support bar 77 and the roller 76.
  • the support bar 77 is pivotally movable about the pivot pin 77a by means of a pneumatic system which includes a cylinder 181 and a rod 181a which is attached to the support bar 77 by a pivotable connection 181b.
  • a pneumatic system which includes a cylinder 181 and a rod 181a which is attached to the support bar 77 by a pivotable connection 181b.
  • the air pressure in the cylinder 181 maintains an upward pressure on the roller against the inside of the tyre tread ring T holding it against a drive roller 82 which engages the external surface of the tyre tread ring for imparting rotation to the tyre X.
  • a motor 83 is provided for driving a chain 84 to rotate the drive roller 82.
  • the position of the roller 82 can be vertically changed since it is mounted on a bracket 83b (Fig. 7) which is movable up and down by a pneumatic system 83a.
  • the roller itself is guided in such movement by means of guide rods 82a which are positioned in fixed sleeves 82b.
  • Additional rollers 184 are preferably provided for maintaining the tyre X in the desired position during the cutting operation.
  • the tyre X is prevented from moving laterally by retaining members 85 which engage the sidewalls of the tyre and which are movable laterally on horizontal support rods 85a which extend through sleeves 85b.
  • Such sleeves 85b are moved inwardly and outwardly by any suitable pneumatic or hydraulic mechanism (not shown).
  • the sidewall cutting mechanism of this invention includes a rotating blade 86 for each sidewall which preferably has sharp teeth like a saw blade.
  • the saw blade 86 is mounted on 5 a shaft 86a which is rotated by an electrically or pneumatically driven motor 87 with a conventional configuration.
  • a base for the rotating blade 86 and the motor 87 is provided by spaced pates 88 which are connected and supported from a sliding sleeve 89 by a pneumatic or hydraulic piston arrangement.
  • the cutting blades 86 are positioned in an upwardly inclined angle with respect to the tyre X and sidewalls W, which
  • the supports 90 have extensions 90a which are preferably threaded and engage nuts 90b so that the angle of inclination of the rotating blades 86 may be adjusted to obtain the maximum cutting efficiency. Since most truck tyres have steel wire reinforcing in the sidewalls. rotating blades
  • the 20 86 can cut through the rubber and the steel wires in the sidewalls of a truck tyre.
  • the angle of the blades with respect to horizontal is usually about 10 degrees upwardly from horizontal, the invention is not limited to that particular angle because variations can be made by those of ordinary skill in the art having the benefit of the teaching of this application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un procédé et un dispositif servant à obtenir de la poudre de caoutchouc à partir d'un pneu de rebut. A réception d'un mélange de pneus de véhicules de passagers et de camions, on trie ces pneus, de façon à traiter séparément les deux types de pneus. Ceci permet de traiter les différents types de caoutchouc qui composent les pneus des véhicules de passagers et les pneus de camions, puis de les calibrer et de les ensacher. On découpe d'abord les parois latérales du pneu de rebut, on étire ensuite sa surface de roulement et on la met sous tension pendant son abrasion afin d'obtenir la poudre de caoutchouc. En ce qui concerne les pneus de camion, on retire les parois latérales du pneu de rebut au moyen d'une paire de lames rotatives, une de chaque côté du pneu, ces lames étant placées selon un angle s'étendant vers le haut pendant l'opération de coupe.
PCT/AU1997/000830 1996-12-04 1997-12-04 Procede et dispositif servant a obtenir de la poudre de caoutchouc a partir de pneus de rebut Ceased WO1998024607A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU51853/98A AU5185398A (en) 1996-12-04 1997-12-04 Process and apparatus for making crumb rubber from scrap tyres

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76002796A 1996-12-04 1996-12-04
US08/760,027 1996-12-04

Publications (1)

Publication Number Publication Date
WO1998024607A1 true WO1998024607A1 (fr) 1998-06-11

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PCT/AU1997/000830 Ceased WO1998024607A1 (fr) 1996-12-04 1997-12-04 Procede et dispositif servant a obtenir de la poudre de caoutchouc a partir de pneus de rebut

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AU (1) AU5185398A (fr)
WO (1) WO1998024607A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999001266A1 (fr) * 1997-07-01 1999-01-14 Bengold Holdings Pty. Ltd. Regeneration de caoutchouc a partir du flanc d'un pneumatique d'un vehicule
FR2780675A1 (fr) * 1998-07-01 2000-01-07 Claude Choron Machine a decouper les pneumatiques
ES2153244A1 (es) * 1997-04-07 2001-02-16 Retrainers Company S L Procedimiento de reciclado integral de neumaticos desechados y productos de los mismos.
FR2798089A1 (fr) * 1999-09-08 2001-03-09 Loic Prioul Procede de decoupage d'un pneu usage en vue de son recyclage
AU769016B2 (en) * 1999-09-13 2004-01-15 Cheplapharm Arzneimittel Gmbh Solid lipid formulations comprising an inhibitor of lipases and a fatty acid ester of polyols
EP2764961A1 (fr) 2013-01-23 2014-08-13 Jeanick Guin Appareil à découper les flancs des pneumatiques
EP2792459A1 (fr) 2013-01-31 2014-10-22 Jeanick Guin Appareil à sectionner la bande de roulement d'un pneumatique
WO2015162443A1 (fr) 2014-04-23 2015-10-29 Tyre Recycling Solutions Sa Appareil à découper les flancs des pneumatiques
CH712201A1 (fr) * 2016-03-10 2017-09-15 Tyre Recycling Solutions Sa Appareil à découper les pneumatiques.

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US4840316A (en) * 1988-07-13 1989-06-20 Barclay Randel L Rubber crumb recovery from vehicle tires
AU8466791A (en) * 1990-09-20 1992-03-26 Gregory Allan Chapman Tyre cutting machine
WO1992022409A1 (fr) * 1991-06-13 1992-12-23 George Veres Procede de recuperation de caoutchouc des pneumatiques de vehicules
US5235888A (en) * 1992-05-12 1993-08-17 Dom Thomas G Tire sidewall cutting machine
AU4486893A (en) * 1992-08-26 1994-03-03 Daniel Spencer Boorer Manufacture of crumb rubber from motor vehicle tyres
AU5925894A (en) * 1993-04-05 1994-10-06 Gregory Allan Chapman A crumbing machine
WO1995007146A1 (fr) * 1993-09-09 1995-03-16 Cmht Technology (Australia) Pty. Ltd. Procede de regeneration de caoutchouc provenant du flanc d'un pneumatique
WO1995011087A1 (fr) * 1993-10-20 1995-04-27 Cmht Technology (Australia) Pty. Ltd. Ameliorations se rapportant a la recuperation du caoutchouc sur des pneumatiques de vehicules
US5443567A (en) * 1994-10-20 1995-08-22 Pruett; Kearney L. Tire carcass shredding method and apparatus
US5522559A (en) * 1994-04-19 1996-06-04 Hahn & Clay Rubber crumbing apparatus

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4840316A (en) * 1988-07-13 1989-06-20 Barclay Randel L Rubber crumb recovery from vehicle tires
AU8466791A (en) * 1990-09-20 1992-03-26 Gregory Allan Chapman Tyre cutting machine
WO1992022409A1 (fr) * 1991-06-13 1992-12-23 George Veres Procede de recuperation de caoutchouc des pneumatiques de vehicules
US5235888A (en) * 1992-05-12 1993-08-17 Dom Thomas G Tire sidewall cutting machine
AU4486893A (en) * 1992-08-26 1994-03-03 Daniel Spencer Boorer Manufacture of crumb rubber from motor vehicle tyres
AU5925894A (en) * 1993-04-05 1994-10-06 Gregory Allan Chapman A crumbing machine
WO1995007146A1 (fr) * 1993-09-09 1995-03-16 Cmht Technology (Australia) Pty. Ltd. Procede de regeneration de caoutchouc provenant du flanc d'un pneumatique
WO1995011087A1 (fr) * 1993-10-20 1995-04-27 Cmht Technology (Australia) Pty. Ltd. Ameliorations se rapportant a la recuperation du caoutchouc sur des pneumatiques de vehicules
US5522559A (en) * 1994-04-19 1996-06-04 Hahn & Clay Rubber crumbing apparatus
US5443567A (en) * 1994-10-20 1995-08-22 Pruett; Kearney L. Tire carcass shredding method and apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2153244A1 (es) * 1997-04-07 2001-02-16 Retrainers Company S L Procedimiento de reciclado integral de neumaticos desechados y productos de los mismos.
WO1999001266A1 (fr) * 1997-07-01 1999-01-14 Bengold Holdings Pty. Ltd. Regeneration de caoutchouc a partir du flanc d'un pneumatique d'un vehicule
FR2780675A1 (fr) * 1998-07-01 2000-01-07 Claude Choron Machine a decouper les pneumatiques
FR2798089A1 (fr) * 1999-09-08 2001-03-09 Loic Prioul Procede de decoupage d'un pneu usage en vue de son recyclage
AU769016B2 (en) * 1999-09-13 2004-01-15 Cheplapharm Arzneimittel Gmbh Solid lipid formulations comprising an inhibitor of lipases and a fatty acid ester of polyols
EP2764961A1 (fr) 2013-01-23 2014-08-13 Jeanick Guin Appareil à découper les flancs des pneumatiques
EP2792459A1 (fr) 2013-01-31 2014-10-22 Jeanick Guin Appareil à sectionner la bande de roulement d'un pneumatique
WO2015162443A1 (fr) 2014-04-23 2015-10-29 Tyre Recycling Solutions Sa Appareil à découper les flancs des pneumatiques
CH712201A1 (fr) * 2016-03-10 2017-09-15 Tyre Recycling Solutions Sa Appareil à découper les pneumatiques.

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