CA1157103A - Cured tire and method of engraving the same - Google Patents
Cured tire and method of engraving the sameInfo
- Publication number
- CA1157103A CA1157103A CA000374446A CA374446A CA1157103A CA 1157103 A CA1157103 A CA 1157103A CA 000374446 A CA000374446 A CA 000374446A CA 374446 A CA374446 A CA 374446A CA 1157103 A CA1157103 A CA 1157103A
- Authority
- CA
- Canada
- Prior art keywords
- tire
- engraving
- laser beam
- cured
- cured tire
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/72—Side-walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/68—Cutting profiles into the treads of tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/009—Using laser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/72—Side-walls
- B29D2030/728—Decorating or marking the sidewalls after tyre vulcanization
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Tires In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
CURED TIRE AND METHOD
OF ENGRAVING THE SAME
ABSTRACT
A method of engraving a cured tire by positioning the tire relative to a laser beam to cause the laser beam to engrave the sidewall surface or tread surface of the tire, and a cured tire having a visible laser engraving thereon.
OF ENGRAVING THE SAME
ABSTRACT
A method of engraving a cured tire by positioning the tire relative to a laser beam to cause the laser beam to engrave the sidewall surface or tread surface of the tire, and a cured tire having a visible laser engraving thereon.
Description
7~(~3 CU~ED TIR~: ANI~ ME~}~OC~
OF ENGRAVING THE S~.M
___ _ _ __ _ _ This invention relates to a method of engravin~ a vulcanized or cured tire and to a cured tire.
Heretofore, it has been common to form raised lettering on a tire by utilizing a mold having recesses which form the raised letters on the tire, and the raised letters are cured integrally with the tire when the tire is cured. Tires have aiso been made with recessed lettering thereon fonned during curing by raised portions 10 of the mold. Such molds, however, are expensive to manufacture.
Tires have also been made which have recessed markings pIaced thereon after curing by hot or cold branding techr~iques which generally do not provide sufficiently accurate markings.
It is an ob3ect of the present invention, therefore, to provide 15 a new and improved method of engraving a cured tire which avoids one or more of the above-mentioned disadvantages and limitations of prior methods of marking tires.
In accordance with the invention, the method of engraving a cured tire comprises exposing the cured tire to a laser beam and
OF ENGRAVING THE S~.M
___ _ _ __ _ _ This invention relates to a method of engravin~ a vulcanized or cured tire and to a cured tire.
Heretofore, it has been common to form raised lettering on a tire by utilizing a mold having recesses which form the raised letters on the tire, and the raised letters are cured integrally with the tire when the tire is cured. Tires have aiso been made with recessed lettering thereon fonned during curing by raised portions 10 of the mold. Such molds, however, are expensive to manufacture.
Tires have also been made which have recessed markings pIaced thereon after curing by hot or cold branding techr~iques which generally do not provide sufficiently accurate markings.
It is an ob3ect of the present invention, therefore, to provide 15 a new and improved method of engraving a cured tire which avoids one or more of the above-mentioned disadvantages and limitations of prior methods of marking tires.
In accordance with the invention, the method of engraving a cured tire comprises exposing the cured tire to a laser beam and
2 0 changing the relative positions of the laser beam and the tire in such manner as to cause the laser beam to engrave the surface of the 'dre.
Alsc~, in accordance with the invention, a tire comprises a cured tire having a visibIe laser engraving thereon.
For a better understanding of the present invention, together with other and further objects thereof, reference is made to the fo~lowin~ description, taken in connection with the accompanying drawings, ar.d its scope will ~e pointed out in the appended c'aims.
Referring now to the drawings: ` ' Fig. 1 is a perspective vie~, partly diagrarmatic, of apparatus useful in the method of the present invention;
F-g. ~ is an enlarOed, fragmentary view of an er,~raved 'ett~r on a cured tire;
,;~.
~7103 Fi&. 3 is an enIarged, fragmentar~r, sectional view, partly diagramma..c, of the Fig. 1 apparat~ engravin~ z tire;
Fig. ;d is an enl~rgecl, fragmentary, seceional view, partly dia~ran-n~atic, of a lasel beam f.om the Fig. 1 apparatus en~ravir,~
5 a tire;
Fig. 4 is an enlarged, sectional view of a portion of a cured tire having a groove laser-engraved therein, and Fig . 5 is a fragmentary, perspective view , partly ~iagramma-tic, of apparatus useful in the method of engraving the tread 10 surface of a cured tire in accordance with the present invention.
Referring now more particularly to Fig. 1 of the drawings, a cured pneumatic tire 10 of standard construction is mounted by means of a conventional chuck mechanism shown in simplified form, on the shaft of a motor 11. The mGtor 11 preferably is mounted on 15 a conventional 3-axis mill 12 for motion in the x, y, and z direc-tions. The mill lZ may, for example, be a 3-axis numerical control tape con~rolled miIl of a type ,~olc~ by Boston Digital Corporation, ~olliston, Massachusetts under the trademark BostoMatic.
A commercially available industrial laser 1 3, for example , of 20 the E;verlase 150, a trademark, C02 type soId by Coherent Radiation Co., Palo Alto, California, is positioned for volatilizing the surface of the tire with its laser beam.
The method of engraving the cured tire l0 comprises exposing the cured tire to a laser beam and changin~ the relative 25 positions of the laser beam and the tire in such manner as to cause the laser beam to engrave the surface of the tire. The mill 12 and motor 11 of ~ig. 1 preferably are controlled to change the position of the tire relative to the laser beam to cause the laser beam to engrave the sidewall surface of the tire.
In Fig. 1 the laser beam has engraved the indic.a U ~ in tne form of recessed letters on the sidewall as part of the br2nd name UNIROYAL, a registered trademark of Uniroyal, Inc.
The letter N is .shown in enlar5ed view in Fi~,. 2, where it will be seen that the border 14 of the letter is 2 g-oove cf th- crcss-35 section al shape ~,enerally re~resented in Fig. 4. The ~roc.ve r.~ay, for example, be .û6û inch dee~ and .~50 inch wide at thc tc>p of tne groover A~ represente~l in Fi~g. 2, the porti~n 15 of the letter ~
1()3 - ~
enclosed ~ithin the groo-~tec'. border 14 is not recessed. However, ~he uidt~. and depth of the groove may be readily controlled as reprc:sented in Fio. 3 b j a~ stably positionirg the h~be 16 which holds Ier.s 17 of the laser to change t~e position of the focal point 5 18 of the laser beam 1~ ard thereby control the size of the beam which strikes the surface of the tire. In some cases, the entire surface of the letter N may be recessed.
The cured tire may be marked with the brand name after classification for uniformity or for blemishes or the like. Tires 10 from the same mold and with a similar appearance may be given different brand names, if desired.
Laser engraving of the cured tire may also form, for exarnple, 2 lOgO, a signature, a picture or decorative recessed pattern in the sidewall s~rface. Also, a brand name may be modified by, for 15 example, molding a one-word portion of the name and adding a second word by laser engraving after the tire has been cured.
The depth of recessed letters on the sidewall of the tire may be controlled, for example, by appropriate control of pulsed opera-tion of the laser beam or control of the relative speed of motion of 20 the tire. Color contrast between the recessed letters and the back-ground may be provided by, for example, engraving through a black cover strip over a white sidewall layer to expose recessed white letters against a black background. As represented in Fig.
3a, the laser beam 19 has a focal point 18 adjusted to cause the 2 5 beam to engra-~e through a black cover strip 24 over a white side-wall layer 25 to e~ose a recessed white border 14a similar to the border 14 of a letter such as represented in Fig. 2.
Referring now to Fig. 5 of the drawings, the cured tire 21 is mounted for rotation by a suitable chuck mechanism 21a, shown in
Alsc~, in accordance with the invention, a tire comprises a cured tire having a visibIe laser engraving thereon.
For a better understanding of the present invention, together with other and further objects thereof, reference is made to the fo~lowin~ description, taken in connection with the accompanying drawings, ar.d its scope will ~e pointed out in the appended c'aims.
Referring now to the drawings: ` ' Fig. 1 is a perspective vie~, partly diagrarmatic, of apparatus useful in the method of the present invention;
F-g. ~ is an enlarOed, fragmentary view of an er,~raved 'ett~r on a cured tire;
,;~.
~7103 Fi&. 3 is an enIarged, fragmentar~r, sectional view, partly diagramma..c, of the Fig. 1 apparat~ engravin~ z tire;
Fig. ;d is an enl~rgecl, fragmentary, seceional view, partly dia~ran-n~atic, of a lasel beam f.om the Fig. 1 apparatus en~ravir,~
5 a tire;
Fig. 4 is an enlarged, sectional view of a portion of a cured tire having a groove laser-engraved therein, and Fig . 5 is a fragmentary, perspective view , partly ~iagramma-tic, of apparatus useful in the method of engraving the tread 10 surface of a cured tire in accordance with the present invention.
Referring now more particularly to Fig. 1 of the drawings, a cured pneumatic tire 10 of standard construction is mounted by means of a conventional chuck mechanism shown in simplified form, on the shaft of a motor 11. The mGtor 11 preferably is mounted on 15 a conventional 3-axis mill 12 for motion in the x, y, and z direc-tions. The mill lZ may, for example, be a 3-axis numerical control tape con~rolled miIl of a type ,~olc~ by Boston Digital Corporation, ~olliston, Massachusetts under the trademark BostoMatic.
A commercially available industrial laser 1 3, for example , of 20 the E;verlase 150, a trademark, C02 type soId by Coherent Radiation Co., Palo Alto, California, is positioned for volatilizing the surface of the tire with its laser beam.
The method of engraving the cured tire l0 comprises exposing the cured tire to a laser beam and changin~ the relative 25 positions of the laser beam and the tire in such manner as to cause the laser beam to engrave the surface of the tire. The mill 12 and motor 11 of ~ig. 1 preferably are controlled to change the position of the tire relative to the laser beam to cause the laser beam to engrave the sidewall surface of the tire.
In Fig. 1 the laser beam has engraved the indic.a U ~ in tne form of recessed letters on the sidewall as part of the br2nd name UNIROYAL, a registered trademark of Uniroyal, Inc.
The letter N is .shown in enlar5ed view in Fi~,. 2, where it will be seen that the border 14 of the letter is 2 g-oove cf th- crcss-35 section al shape ~,enerally re~resented in Fig. 4. The ~roc.ve r.~ay, for example, be .û6û inch dee~ and .~50 inch wide at thc tc>p of tne groover A~ represente~l in Fi~g. 2, the porti~n 15 of the letter ~
1()3 - ~
enclosed ~ithin the groo-~tec'. border 14 is not recessed. However, ~he uidt~. and depth of the groove may be readily controlled as reprc:sented in Fio. 3 b j a~ stably positionirg the h~be 16 which holds Ier.s 17 of the laser to change t~e position of the focal point 5 18 of the laser beam 1~ ard thereby control the size of the beam which strikes the surface of the tire. In some cases, the entire surface of the letter N may be recessed.
The cured tire may be marked with the brand name after classification for uniformity or for blemishes or the like. Tires 10 from the same mold and with a similar appearance may be given different brand names, if desired.
Laser engraving of the cured tire may also form, for exarnple, 2 lOgO, a signature, a picture or decorative recessed pattern in the sidewall s~rface. Also, a brand name may be modified by, for 15 example, molding a one-word portion of the name and adding a second word by laser engraving after the tire has been cured.
The depth of recessed letters on the sidewall of the tire may be controlled, for example, by appropriate control of pulsed opera-tion of the laser beam or control of the relative speed of motion of 20 the tire. Color contrast between the recessed letters and the back-ground may be provided by, for example, engraving through a black cover strip over a white sidewall layer to expose recessed white letters against a black background. As represented in Fig.
3a, the laser beam 19 has a focal point 18 adjusted to cause the 2 5 beam to engra-~e through a black cover strip 24 over a white side-wall layer 25 to e~ose a recessed white border 14a similar to the border 14 of a letter such as represented in Fig. 2.
Referring now to Fig. 5 of the drawings, the cured tire 21 is mounted for rotation by a suitable chuck mechanism 21a, shown in
3 simplified form, on the shaft of a moto. 20 mounted on a 3-axis numerical control tape-controlied mill 23. The method includes the 6tep of exposing the t~ead surface ~f the tire to a laser beam and the step of changing the re3ative positions of the laser '~,eam and thc tire ~n such manner ~s to callsc the ~ac,~r beam t~ en~;rave the 35 trea~ surface of the ire. As represented in Fig. 5, the laser beam may engrave slits 22 or sipe; in tnc U`edd ~.lr~ace. ,he laser bear~
may also bc adjus~ed to engrave wide2~ grvcies in t~e ~read s~rfacc.
rhus, an existing tread surface pattern may be modified or a tread having no ~at.ern thereon may be laser-en~raved ~ith a pattern.
While the-e have been descri~ed what are at ?resent believed to be the preferred embodi.nents of this invention, it ~iil be obvious 5 to those skilled in the ~art that various changes and ;nodifications may be made therein without departing from the lnvention, and it is, therefore, aimed to cover all such changes and modifications as fall within the true spirit and scope of the invention.
may also bc adjus~ed to engrave wide2~ grvcies in t~e ~read s~rfacc.
rhus, an existing tread surface pattern may be modified or a tread having no ~at.ern thereon may be laser-en~raved ~ith a pattern.
While the-e have been descri~ed what are at ?resent believed to be the preferred embodi.nents of this invention, it ~iil be obvious 5 to those skilled in the ~art that various changes and ;nodifications may be made therein without departing from the lnvention, and it is, therefore, aimed to cover all such changes and modifications as fall within the true spirit and scope of the invention.
Claims (2)
1. The method of engraving the sidewall of a cured tire comprising:
exposing the sidewall surface of a cured tire to a laser beam; and changing the relative positions of the laser beam and the tire in such manner as to cause said laser beam to form indicia in the sidewall of the surface of the tire, said indicia being recessed letters in which only the borders of the letters are recessed.
exposing the sidewall surface of a cured tire to a laser beam; and changing the relative positions of the laser beam and the tire in such manner as to cause said laser beam to form indicia in the sidewall of the surface of the tire, said indicia being recessed letters in which only the borders of the letters are recessed.
2. A cured tire made in accordance with the method of claim 1, said tire having a visible laser-engraved brand name thereon.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19159180A | 1980-09-29 | 1980-09-29 | |
| US191,591 | 1980-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1157103A true CA1157103A (en) | 1983-11-15 |
Family
ID=22706095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000374446A Expired CA1157103A (en) | 1980-09-29 | 1981-03-31 | Cured tire and method of engraving the same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS57126647A (en) |
| CA (1) | CA1157103A (en) |
| MX (1) | MX158360A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4564737A (en) * | 1983-07-11 | 1986-01-14 | F.M.P. Enterprise, Inc. | Automatic layout machine for tire tread patterns |
| EP0650824A1 (en) | 1993-11-03 | 1995-05-03 | Bridgestone Corporation | Method and apparatus for ablative processing of elastomeric products |
| EP0669203A1 (en) * | 1994-02-24 | 1995-08-30 | PIRELLI COORDINAMENTO PNEUMATICI S.p.A. | Method and apparatus for plotting a trace pattern on the tread band of a tyre |
| EP0714724A3 (en) * | 1994-11-28 | 1996-07-17 | Stahlgruber Gruber & Co Otto | |
| EP0689948A3 (en) * | 1994-06-28 | 1996-07-24 | Uniroyal Englebert Gmbh | Application of a character in a visible surface of a tyre |
| EP1174254A2 (en) * | 2000-07-21 | 2002-01-23 | Recamic S.A. | Apparatus for retreading tires |
| EP2135753A3 (en) * | 2008-06-17 | 2010-08-25 | Continental Reifen Deutschland GmbH | Vehicle pneumatic tire with a rim protector |
| EP3308978A1 (en) * | 2016-10-17 | 2018-04-18 | Continental Reifen Deutschland GmbH | Pneumatic tyres for a vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020218309A1 (en) * | 2019-04-26 | 2020-10-29 | 株式会社ブリヂストン | Tire manufacturing method and tire |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52105025A (en) * | 1976-02-28 | 1977-09-03 | Kooken Yuugen | Laser beam seal engraving method |
| JPS5369702A (en) * | 1976-11-30 | 1978-06-21 | Hitachi Ltd | Device for etching by laser |
| JPS5571559A (en) * | 1978-11-21 | 1980-05-29 | Takanobu Yamamoto | Device for engraving stamp by laser beam |
-
1981
- 1981-03-31 CA CA000374446A patent/CA1157103A/en not_active Expired
- 1981-09-02 MX MX18898581A patent/MX158360A/en unknown
- 1981-09-28 JP JP56153527A patent/JPS57126647A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4564737A (en) * | 1983-07-11 | 1986-01-14 | F.M.P. Enterprise, Inc. | Automatic layout machine for tire tread patterns |
| EP0650824A1 (en) | 1993-11-03 | 1995-05-03 | Bridgestone Corporation | Method and apparatus for ablative processing of elastomeric products |
| EP0669203A1 (en) * | 1994-02-24 | 1995-08-30 | PIRELLI COORDINAMENTO PNEUMATICI S.p.A. | Method and apparatus for plotting a trace pattern on the tread band of a tyre |
| US5668731A (en) * | 1994-02-24 | 1997-09-16 | Pirelli Coordinamento Pneumatici S.P.A. | Method and apparatus for plotting a trace pattern on the tread band of a tire |
| EP0689948A3 (en) * | 1994-06-28 | 1996-07-24 | Uniroyal Englebert Gmbh | Application of a character in a visible surface of a tyre |
| EP0714724A3 (en) * | 1994-11-28 | 1996-07-17 | Stahlgruber Gruber & Co Otto | |
| EP1174254A2 (en) * | 2000-07-21 | 2002-01-23 | Recamic S.A. | Apparatus for retreading tires |
| EP1174254A3 (en) * | 2000-07-21 | 2003-07-23 | Recamic S.A. | Apparatus for retreading tires |
| US6911113B2 (en) | 2000-07-21 | 2005-06-28 | Recamic S.A. | Apparatus for recapping tires |
| EP2135753A3 (en) * | 2008-06-17 | 2010-08-25 | Continental Reifen Deutschland GmbH | Vehicle pneumatic tire with a rim protector |
| EP3308978A1 (en) * | 2016-10-17 | 2018-04-18 | Continental Reifen Deutschland GmbH | Pneumatic tyres for a vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| MX158360A (en) | 1989-01-27 |
| JPS57126647A (en) | 1982-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |