EP1252988A1 - Vorrichtung zur Bearbeitung und Entgratung von Luftreifen - Google Patents

Vorrichtung zur Bearbeitung und Entgratung von Luftreifen Download PDF

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Publication number
EP1252988A1
EP1252988A1 EP02008628A EP02008628A EP1252988A1 EP 1252988 A1 EP1252988 A1 EP 1252988A1 EP 02008628 A EP02008628 A EP 02008628A EP 02008628 A EP02008628 A EP 02008628A EP 1252988 A1 EP1252988 A1 EP 1252988A1
Authority
EP
European Patent Office
Prior art keywords
tire
tool
cutting
deburring
rotation
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.)
Granted
Application number
EP02008628A
Other languages
English (en)
French (fr)
Other versions
EP1252988B1 (de
Inventor
Francois Trochon
Carlo Conzatti
Giorgio Marangoni
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.)
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
Original Assignee
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
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 Michelin Recherche et Technique SA Switzerland, Michelin Recherche et Technique SA France, Societe de Technologie Michelin SAS filed Critical Michelin Recherche et Technique SA Switzerland
Publication of EP1252988A1 publication Critical patent/EP1252988A1/de
Application granted granted Critical
Publication of EP1252988B1 publication Critical patent/EP1252988B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/366—Single-purpose machines or devices for grinding tyres
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/44—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cup or like cutting member
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/914—Flash trimming
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0259—Edge trimming [e.g., chamfering, etc.]

Definitions

  • the subject of the present invention is a device for machining viscoelastic products: more specifically, it relates to a machine for machining and deburring products rubbery like tires.
  • tires have a tread made of outer layer of gum mixes, more or less thick, and in which are molded various grooves and sculptures intended, inter alia, to improve the grip of the vehicle on the ground.
  • the tires are often machined by grinding (see for example patent WO 00/15388), but this process causes surface heating which is sometimes sought to be avoided; in addition, we sometimes need a very good surface finish; a cutting process is then used; generally, the tire is rotated about its axis, by moving it towards the tool by a translation of a part of the frame (see for example US 4,036,275).
  • the cutting tools used are generally cylindrical, that is to say that the cutting edge of the blade is circular (see for example US 3,426,828 or US 4,036,275) and the cut material passes inside the cylindrical tool and is evacuated in the form of a strap.
  • burrs are observed behind the tool at the edge of the grooves of the tire. So far these burrs have not been a particular problem, but in the face of increased quality requirements, and the increasing severity of the tests, it has become necessary, in certain cases, to remove these burrs.
  • the subject of the invention is a machine for trimming and deburring treads. of tires after a cutting machining operation which allows the same machine for cutting and deburring without having to dismantle the tire.
  • a machine for machining and deburring treads of tires comprising a frame, a mandrel for supporting the tire and drive it in rotation around its axis, a cylindrical cutting tool and means to orient the tool in various directions relative to the tire, is characterized in that it comprises means making it possible to reverse the rotation of said pneumatic and in that said tool can work in two positions substantially symmetrical with respect to the tire, a first position for cutting proper, and a second position for deburring, each of said positions corresponding to an opposite direction of rotation of the tire.
  • the machine according to the invention thus has the advantage of ensuring the deburring of the tire while maintaining excellent machining precision. It is a significant advantage relative to a machine which would require turning the tire on its axis and rotate it in reverse in front of the same tool because disassembly and reassembly of the tire on its mandrel would cause a loss of precision of machining the tire.
  • said tool has two circular cutting edges capable to occupy one of the two symmetrical positions each.
  • the tool in the first position, has a cutting angle alpha, and the pneumatic, an adequate direction of rotation, and in the second position, the tool has an angle less alpha cutting, and the tire, a direction of rotation opposite to the previous one.
  • the cutting edge of the tool comprises at least one slot, that is to say a part having a shorter axial length; this allows to cut automatically the strip of material cut into shorter pieces and avoid jams.
  • the machine according to the invention can be used in the manner usual, that is to say with a single machining phase, without switching over from the tool and reversing the rotation of the tire: this will be the case, for example, when the tire is completely removed from the tire and there is therefore no burrs to be removed.
  • FIG. 1 very schematically shows a machine for machining strips of tire bearing according to the invention.
  • This machine includes a first frame fixed 1 support for a mandrel (not shown) on which a tire 2 is mounted.
  • machine also includes a movable frame 3 support for a tool holder 4.
  • the frame 3 is fixed on a fixed base 5 via two pairs of horizontal rails 6 and 7.
  • the rails 6 are oriented perpendicular to the axis of rotation 8 of the tire and allow a translational movement of the frame 3 to move it towards or away from the pneumatic 2.
  • the rails 7 are oriented parallel to the axis of rotation 8 of the pneumatic 2 and allow a translational movement of the frame 3 parallel to this axis of rotation of the tire 2.
  • the combination of these two translational movements allows the cutting tool to follow all the usual tire profiles.
  • the frame 3 also allows the tool holder 4 to be moved vertically by means not represented.
  • the machine also includes means (not shown) for setting rotation of the tire 2, to reverse its direction of rotation, as well as to control the displacements of the movable frame 3 and the vertical position of the tool holder 4.
  • the tool holder 4 is intended to hold a cutting tool comprising two tools cylindrical cutting 19 and 20.
  • a cutting tool comprising two tools cylindrical cutting 19 and 20.
  • the tool holder 4 can tilt horizontally around the axis 25 to, as described below, bring the cutting edge of the tool 20 into contact with the pneumatic 2.
  • Figure 2 schematically shows the formation of a burr 11 when the cutting edge a cutting tool 12 comes into line with a groove 13 in the tread 14 tire.
  • a cutting tool moving in the direction of arrow A relative to a groove 13 in the tread of the tire.
  • the edge of the groove 13 is folds under the effect of this tool 12 and disappears without being cut, giving rise to the burr 11.
  • the plasticity of the material no longer offers enough resistance to the tool to ensure a clean cut.
  • the deburring operation could be carried out by hand if there is few times to do, or by turning the tire 2 on its mandrel and rotating in reverse in front of the same cutting tool, which would take up the burrs in the wrong direction and would allow them to be cut; but we will understand that this process takes time to dismantle and reassemble the tire, and generates offsets or offsets which - even slight - affect the accuracy of the surface condition of the machined tread.
  • the tool holder 4 makes it possible to present a cutting tool according to two symmetrical positions with respect to the tire.
  • two tools 19 and 20 each comprising a circular cutting edge 21 and 22 and mounted in opposition. These tools are fixed in a support 18 rotated around its axis 26, in a ball cage 23, by a geared motor group 24. The rotation of the cutting tools around their axis 26 facilitates machining and deburring of the tire. It also increases the life of the cutting edges between two sharpenings.
  • This assembly 4 is rotatably mounted on a horizontal axis 25 substantially parallel to that tire 2, which makes it possible to adjust (by means not shown) the angle cutting angle ⁇ or - ⁇ of tool 19 or 20.
  • the cutting angle ⁇ is defined as the angle between the normal to the tread at the point of contact and the axis of rotation 26 of tools 19 and 20.
  • Figure 3 shows the tool 19 in the machining position of the tread 14 of the tire 2 (cutting edge 21 in action), while FIG. 4 shows the tool 20 in deburring position (cutting edge 22 in action).
  • the tool holder 4 was tilted around the axis 25, adjusted if necessary vertical and horizontal positions of the tool holder 4 relative to the tread 14 of tire 2 and the direction of rotation has been reversed (arrows F and F ') of the pneumatic 2. The cutting angle is then - ⁇ .
  • an important advantage of this variant lies in the fact that, thanks to the two cutting edges of the cutting tool, the latter is very quickly and very easily put into action, and moreover with precision maximum; this leads to an extremely tread surface condition specific.
  • the two positions of the tool are symmetrical with respect to the tire; in the two phases we use angles of cuts ⁇ and - ⁇ weak and substantially equal, but it will be noted that the point of attack of the cutting tool on the surface to be machined may be slightly different. All of the mechanical means described above, without going into the details of techniques well known, allows to adjust the position of the tool with extreme precision.
  • Cutting tools 19 and 20 can be cylindrical tools with a cutting edge circular as described in US Pat. No. 4,036,275.
  • FIGs 5 and 6 show a preferred variant of the cutting tool according to the invention.
  • the tool 30 is presented in top view in FIG. 5 and from the side in FIG. 6. It comprises a cutting edge 31 comprising a plurality of slots 32, that is to say zones having a shorter axial length. These slots are preferably arranged so regular all around the cutting edge of the tool. These slots can be obtained simply by machining in the cylindrical surface of the tool located on the same side as the cutting longitudinal grooves which open into the cutting edge in the form said slots. In Figure 6, we see that the cutting edge of the tool is arranged externally and thus the grooves are also made externally.
  • these slots allow to cut the cut rubber strip in short sections and thus avoid jamming when cutting.
  • the diameter of the tool can be of the order of 150 mm.
  • FIG. 7 shows a second variant 40 of a cutting tool according to the invention.
  • the grooves 43 are helical instead of being axial.
  • Each slot 42 thus has inclined edges instead of being normal as in the case of tool 30. This provides a leading edge and trailing edge effect of the cutting edge. 41 of tool 40. This effect can facilitate the cutting of cut strips.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Tyre Moulding (AREA)
  • Turning (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP02008628A 2001-04-26 2002-04-17 Vorrichtung zur Bearbeitung und Entgratung von Luftreifen Expired - Lifetime EP1252988B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0105782 2001-04-26
FR0105782A FR2824007A1 (fr) 2001-04-26 2001-04-26 Machine d'usinage et d'ebavurage de pneumatiques

Publications (2)

Publication Number Publication Date
EP1252988A1 true EP1252988A1 (de) 2002-10-30
EP1252988B1 EP1252988B1 (de) 2004-06-30

Family

ID=8862834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02008628A Expired - Lifetime EP1252988B1 (de) 2001-04-26 2002-04-17 Vorrichtung zur Bearbeitung und Entgratung von Luftreifen

Country Status (6)

Country Link
US (1) US6655438B2 (de)
EP (1) EP1252988B1 (de)
JP (1) JP4095835B2 (de)
AT (1) ATE270174T1 (de)
DE (1) DE60200676T2 (de)
FR (1) FR2824007A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699940A (zh) * 2012-06-15 2012-10-03 山东美鹰食品设备有限公司 一种切菜机
CN105269003A (zh) * 2015-11-28 2016-01-27 余静远 一种用于模型赛车车轮的车削工具
CN109290864A (zh) * 2018-11-10 2019-02-01 厦门大学嘉庚学院 小型轮胎加工装置及使用方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003902698A0 (en) * 2003-05-30 2003-06-19 Collins, Anthony Tools mounting assembly
US8231428B2 (en) * 2004-02-27 2012-07-31 Akron Special Machinery, Inc. Tire profile generating machine and related methods
US8357254B2 (en) * 2010-01-29 2013-01-22 Bridgestone Bandag, Llc Method and apparatus for improved tread splicing
JP5632872B2 (ja) * 2012-04-02 2014-11-26 住友ゴム工業株式会社 更生タイヤ用リングトレッドのバフ装置
FR2991234B1 (fr) * 2012-05-31 2015-04-03 Michelin & Cie Procede de fabrication d'une paroi flexible dans un sillon de bande de roulement pour pneumatique
CN111225587A (zh) 2017-09-21 2020-06-02 阿尔奇企业公司 在模块化实用工具系统中使用的伸缩模块

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977131A (en) * 1974-02-09 1976-08-31 Dunlop Limited Tire grinding machines
US4036275A (en) * 1974-04-12 1977-07-19 Branick Charles E Tire stripping apparatus
US4116256A (en) * 1976-04-22 1978-09-26 National-Standard Company Tire buffing apparatus
US4486255A (en) * 1982-10-05 1984-12-04 N. V. Bekaert S. A. Method and machine for removing at least one layer of reinforcing elements from a breaker or belt of a rubber tire
US5054971A (en) * 1989-02-17 1991-10-08 Entwicklungszentrum Fur Zerspanungstechnik Apparatus for removing damaged portions of rubber components

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426828A (en) 1966-04-11 1969-02-11 Peter C Neilsen Tire tread cutting apparatus and method
US3953915A (en) * 1975-02-04 1976-05-04 Kennametal Inc. Method and apparatus for removing tread material from radial belted tires
US3980120A (en) * 1975-02-04 1976-09-14 Kennametal Inc. Method and apparatus for removing tread material from radial belted tires
US4009499A (en) * 1976-03-25 1977-03-01 Casler William H Apparatus for treating the surface of an article
US4112630A (en) * 1977-08-08 1978-09-12 The Goodyear Tire & Rubber Company Reduction of lateral force variations of a tire effective in both forward and rearward senses of rotation
US4663889A (en) * 1986-07-14 1987-05-12 The Firestone Tire & Rubber Company Apparatus and method for grinding sidewall areas of tires
US6062950A (en) 1998-09-16 2000-05-16 Bridgestone/Firestone, Inc. Dual wheel tire grinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977131A (en) * 1974-02-09 1976-08-31 Dunlop Limited Tire grinding machines
US4036275A (en) * 1974-04-12 1977-07-19 Branick Charles E Tire stripping apparatus
US4116256A (en) * 1976-04-22 1978-09-26 National-Standard Company Tire buffing apparatus
US4486255A (en) * 1982-10-05 1984-12-04 N. V. Bekaert S. A. Method and machine for removing at least one layer of reinforcing elements from a breaker or belt of a rubber tire
US5054971A (en) * 1989-02-17 1991-10-08 Entwicklungszentrum Fur Zerspanungstechnik Apparatus for removing damaged portions of rubber components

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699940A (zh) * 2012-06-15 2012-10-03 山东美鹰食品设备有限公司 一种切菜机
CN102699940B (zh) * 2012-06-15 2014-06-11 山东美鹰食品设备有限公司 一种切菜机
CN105269003A (zh) * 2015-11-28 2016-01-27 余静远 一种用于模型赛车车轮的车削工具
CN105269003B (zh) * 2015-11-28 2017-07-28 余静远 一种用于模型赛车车轮的车削工具
CN109290864A (zh) * 2018-11-10 2019-02-01 厦门大学嘉庚学院 小型轮胎加工装置及使用方法
CN109290864B (zh) * 2018-11-10 2023-06-16 厦门大学嘉庚学院 小型轮胎加工装置及使用方法

Also Published As

Publication number Publication date
JP2003001724A (ja) 2003-01-08
DE60200676D1 (de) 2004-08-05
US20020166641A1 (en) 2002-11-14
EP1252988B1 (de) 2004-06-30
US6655438B2 (en) 2003-12-02
FR2824007A1 (fr) 2002-10-31
ATE270174T1 (de) 2004-07-15
JP4095835B2 (ja) 2008-06-04
DE60200676T2 (de) 2005-07-07

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