JP4316360B2 - Tire vulcanization mold - Google Patents

Description

  The present invention relates to a tire vulcanization mold for forming a pneumatic tire, and more specifically, to a sectional type tire vulcanization that can be shared with a tire vulcanizer having containers with different division structures. Regarding molds.

  In general, a sectional type mold for molding a tire is formed by disposing an annular side mold for forming a tread portion of a pneumatic tire between upper and lower molds, and dividing the side mold into a plurality of pieces along the circumferential direction. (For example, refer patent document 1).

  On the other hand, a tire vulcanizer for attaching a sectional type tire molding die has containers divided into segments for mounting each sector, and each sectional type tire molding die is divided into containers. It has a sector with a corresponding division structure.

  For example, a tire vulcanizer with a container divided into eight segments is fitted with a mold having a sector with a side mold divided into eight, and a tire vulcanizer with a container divided into nine segments is A mold having a sector divided into nine is attached.

Therefore, it is not possible to share a sectional type tire molding die for tire vulcanizers having containers with different division structures, and as a result, a tire molding die must be produced for each container. Therefore, there is a problem that the equipment cost is high.
JP 63-202410 A

  An object of the present invention is to provide a tire vulcanization mold that can reduce a facility cost by sharing a mold for a tire vulcanizer including containers having different division structures.

The present invention that achieves the above-mentioned object comprises an annular side mold disposed between upper and lower molds divided into a plurality of sectors along the circumferential direction, and these sectors are equally divided into containers of a tire vulcanizer. in Sectional tire mold of which is adapted for mounting to the plurality of segments to form multiple types of sectors is divided in a plurality of different angles is an integral multiple of a prime number constituting the 360 the side mold One or a plurality of these plural types of sectors are combined and mounted so as to match the size of the container segment .

As described above, by dividing a plurality of different angles is an integral multiple of a prime number constituting the 360 side type annular form the plural kinds of sectors, one or a plurality said container from the plurality kinds of sectors Since it was installed in combination so as to match the size of the segment, it was equipped with containers with different division structures by changing the combination of the sectors according to the size of the segment to which these sectors were installed . It becomes possible to share a tire vulcanizing mold with a tire vulcanizer. Therefore, the equipment cost can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  1 and 2 show an example of a sectional type tire vulcanizing mold according to the present invention, which includes annular upper and lower molds 1 and 2 and an annular side mold 3 disposed therebetween.

  The upper mold 1 has a molding surface 1a for molding one side portion of a pneumatic tire (not shown) on the lower surface. The lower mold 2 includes a molding surface 2a for molding the other side portion on the upper surface. Upper and lower bead rings 4 and 5 for forming a bead portion are provided on the inner peripheral side of the upper mold 1 and the lower mold 2.

  The side mold 3 having a molding surface 3a for molding the tread portion on the inner circumferential surface is composed of sectors 6a to 6p divided into 16 along the circumferential direction. The division angle θa of the first sector 6a is 40 °, the division angle θb of the second sector 6b adjacent to the first sector 6a is 5 °, and the division angle θc of the third sector 6c adjacent to the second sector 6b is The fourth sector 6d adjacent to the third sector 6c is 35 °, the division angle θd is 10 °, the fifth sector 6e adjacent to the fourth sector 6d is 30 °, and the fifth sector 6e is adjacent to the fifth sector 6e. The sixth sector 6f has a split angle θf of 15 °, the seventh sector 6g adjacent to the sixth sector 6f has a split angle θg of 25 °, and the eighth sector 6h adjacent to the seventh sector 6g has a split angle θh. 20 °.

  Further, the ninth sector 6i adjacent to the eighth sector 6h has a division angle θi of 20 °, the tenth sector 6j adjacent to the ninth sector 6i has a division angle θj of 25 °, and the tenth sector 6j adjacent to the tenth sector 6j. The eleventh sector 6k has a division angle θk of 15 °, the twelfth sector 6l adjacent to the eleventh sector 6k has a division angle θl of 30 °, and the thirteenth sector 6m adjacent to the twelfth sector 6l has a division angle θm of 10. °, the fourteenth sector 6n adjacent to the thirteenth sector 6m has a division angle θn of 35 °, the fifteenth sector 6o adjacent to the fourteenth sector 6n has a division angle θo of 5 °, and the fifteenth sector 6o adjacent to the fifteenth sector 6o. The 16 sector 6p has a division angle θp of 40 °, and the side mold 3 has a prime number (one of the prime numbers 2, 3 and 5) constituting the number 360 corresponding to one round angle. To form a sector 6a~6p divided at an angle a of an integral multiple.

  As shown in FIG. 3, the sectors 6a to 6p thus divided include the first and second sectors 6a and 6b as one sector unit 11, the third and fourth sectors 6c and 6d as one sector unit 12, and the fifth sector. , 6 sectors 6e and 6f are one sector unit 13, the seventh and eighth sectors 6g and 6h are one sector unit 14, the ninth and tenth sectors 6i and 6j are one sector unit 15, the eleventh and twelfth sectors 6k, 6l is treated as one sector unit 16, the 13th and 14th sectors 6m and 6n are treated as one sector unit 17, and the 15th and 16th sectors 6o and 6p are treated as one sector unit 18 so that the container is divided into 8 (equal division). It can be attached to a tire vulcanizer having

  On the other hand, the first sector 6a is one sector unit 21, the second and third sectors 6b and 6c are one sector unit 22, the fourth and fifth sectors 6d and 6e are one sector unit 23, the sixth and seventh sectors 6f, 6g is one sector unit 24, the eighth and ninth sectors 6h and 6i are one sector unit 25, the tenth and eleventh sectors 6j and 6k are one sector unit 26, and the twelfth, thirteenth sectors 6l and 6m are one sector. By attaching the unit 27, the 14th and 15th sectors 6n and 6o as one sector unit 28, and the 16th sector 6p as one sector unit 29, the unit 27 is attached to a tire vulcanizer having a container divided into nine (equal division). Can do.

  In this way, by changing the combination of the plurality of sectors 6a to 6p obtained by dividing the annular side mold 3 at an angle that is an integral multiple of the prime number constituting the 360, the container tire vulcanizer can be divided into eight and nine divisions. In addition, since the tire vulcanization mold can be shared, the equipment cost can be reduced. Further, by adopting the above-mentioned eight types of angles as the division angles θa to θp of the sectors 6a to 6p, it is possible to share the tire vulcanization mold while minimizing the number of sectors to be divided.

  FIG. 4 shows another example of the sectional type tire vulcanizing mold according to the present invention. From the sectors 7a to 7r obtained by dividing the side mold 3 into 18 parts at a division angle αa to αr (not shown) along the circumferential direction. A configured example is shown.

  The first sector 7a has a split angle αa of 40 °, the second sector 7b adjacent to the first sector 7a has a split angle αb of 5 °, and the third sector 7c adjacent to the second sector 7b has a split angle αc. The fourth sector 7d adjacent to the third sector 7c is 15 °, the division angle αd is 20 °, the fifth sector 7e adjacent to the fourth sector 7d is 10 °, and the fifth sector 7e is adjacent to the fifth sector 7e. The sixth sector 7f has a split angle αf of 30 °, the seventh sector 7g adjacent to the sixth sector 7f has a split angle αg of 15 °, and the eighth sector 7h adjacent to the seventh sector 7g has a split angle αh. The ninth sector 7i adjacent to the eighth sector 7h is 25 ° and the division angle αi is 20 °.

  Further, the tenth sector 7j adjacent to the ninth sector 7i has a division angle αj of 20 °, the eleventh sector 7k adjacent to the tenth sector 7j has a division angle αk of 25 °, and the eleventh sector 7k adjacent to the eleventh sector 7k. The 12 sector 7l has a division angle αl of 15 °, the 13th sector 7m adjacent to the 12th sector 7l has a division angle αm of 30 °, and the 14th sector 7n adjacent to the 13th sector 7m has a division angle αn of 10. The fifteenth sector 7o adjacent to the fourteenth sector 7n has a division angle αo of 20 °, the sixteenth sector 7p adjacent to the fifteenth sector 7o has a division angle αp of 15 °, and the fifteenth sector 7p adjacent to the sixteenth sector 7p. The 17th sector 7q has a division angle αq of 5 °, and the 18th sector 7r adjacent to the 17th sector 7q has a division angle αr of 40 °. Similarly, the side mold 3 is divided by an angle that is an integral multiple of a prime number (a prime number of 2 and 3 and 5) constituting a number 360 corresponding to an angle of one round to form sectors 7a to 7r. Yes.

  As shown in FIG. 4A, the sectors 7a to 7r divided in this way include the first and second sectors 7a and 7b as one sector unit 31, and the third, fourth, and fifth sectors 7c, 7d, and 7e as one. One sector unit 32, the sixth and seventh sectors 7f and 7g as one sector unit 33, the eighth and ninth sectors 7h and 7i as one sector unit 34, the tenth and eleventh sectors 7j and 7k as one sector unit 35, The twelfth and thirteenth sectors 7l and 7m are treated as one sector unit 36, the fourteenth, fifteenth and sixteenth sectors 7n, 7o and 7p are treated as one sector unit 37, and the seventeenth and eighteenth sectors 7q and 7r are treated as one sector unit 38. Thus, it can be attached to a tire vulcanizer having a container divided into eight (equal division).

  On the other hand, as shown in FIG. 4B, the first sector 7a is one sector unit 41, the second, third and fourth sectors 7b, 7c and 7d are one sector unit 42, and the fifth and sixth sectors 7e and 7f. 1 sector unit 43, 7th and 8th sectors 7g and 7h as 1 sector unit 44, 9th and 10th sectors 7i and 7j as 1 sector unit 45, 11th and 12th sectors 7k and 7l as 1 sector unit 46, the 13th and 14th sectors 7m and 7n are handled as one sector unit 47, the 15th, 16th and 17th sectors 7o, 7p and 7q are handled as one sector unit 48, and the 18th sector 7r is handled as one sector unit 49. It can be attached to a tire vulcanizer having a container divided into nine (equal division).

  Further, as shown in FIG. 4C, the first, second, and third sectors 7a, 7b, and 7c are used as one sector unit 51, and the fourth, fifth, and sixth sectors 7d, 7e, and 7f are used as one sector unit 52, The seventh, eighth and ninth sectors 7g, 7h and 7i are one sector unit 53, the tenth, eleventh and twelfth sectors 7j, 7k and 7l are one sector unit 54, the thirteenth, fourteenth and fifteenth sectors 7m, 7n and 7o. Is handled as one sector unit 55 and the sixteenth, seventeenth, and eighteenth sectors 7p, 7q, and 7r as one sector unit 56, so that it can be attached to a tire vulcanizer having a container divided into six (equal division).

  Therefore, the tire vulcanization mold can be shared with the container tire vulcanizer divided into 6, 8, and 9, and the equipment cost can be further reduced. Further, by adopting the above-mentioned seven angles as the division angles αa to αr of the sectors 7a to 7r, the tire vulcanization mold can be shared while minimizing the number of sectors to be divided.

  FIG. 5 shows still another example of the sectional type tire vulcanizing mold according to the present invention. The sectors 8a to 8v are obtained by dividing the side mold 3 into 22 parts along the circumferential direction at division angles βa to βv (not shown). An example configured from is shown.

  The first sector 8a has a division angle βa of 30 °, the second sector 8b adjacent to the first sector 8a has a division angle βb of 10 °, and the third sector 8c adjacent to the second sector 8b has a division angle βc. 5 °, the fourth sector 8d adjacent to the third sector 8c has a division angle βd of 15 °, the fifth sector 8e adjacent to the fourth sector 8d has a division angle βe of 20 °, and is adjacent to the fifth sector 8e. The sixth sector 8f has a split angle βf of 10 °, the seventh sector 8g adjacent to the sixth sector 8f has a split angle βg of 30 °, and the eighth sector 8h adjacent to the seventh sector 8g has a split angle βh. The division angle βi of the ninth sector 8i adjacent to the eighth sector 8h is 15 °, and the division angle βj of the tenth sector 8j adjacent to the ninth sector 8i is 10 °, tenth. The eleventh sector 8k adjacent to the sector 8j has a division angle βk of 20 °.

  Further, the twelfth sector 8l adjacent to the eleventh sector 8k has a split angle βl of 20 °, the thirteenth sector 8m adjacent to the twelfth sector 8l has a split angle βm of 10 °, and the thirteenth sector 8m adjacent to the thirteenth sector 8m. The 14th sector 8n has a division angle βn of 15 °, the fifteenth sector 8o adjacent to the fourteenth sector 8n has a division angle βo of 15 °, and the sixteenth sector 8p adjacent to the fifteenth sector 8o has a division angle βp of 30. The 17th sector 8q adjacent to the 16th sector 8p has a division angle βq of 10 °, the 18th sector 8r adjacent to the 17th sector 8q has a division angle βr of 20 °, and the 18th sector 8r adjacent to the 18th sector 8r. The 19th sector 8s has a division angle βs of 15 °, the 20th sector 8t adjacent to the 19th sector 8s has a division angle βt of 5 °, and the 20th sector. The division angle βu of the 21st sector 8u adjacent to the ter 8t is 10 °, and the division angle βv of the 22nd sector 8v adjacent to the 21st sector 8u is 30 °. The sectors 8a to 8v are formed by being divided at an angle that is an integral multiple of a prime number (a prime number of any one of 2, 3 and 5) constituting the number 360 corresponding to the circumferential angle.

  As shown in FIG. 5A, the sectors 8a to 8v divided in this way are divided into the first, second and third sectors 8a, 8b and 8c as one sector unit 61, fourth, fifth and sixth sectors 8d and 8e. 8f is one sector unit 62, the seventh and eighth sectors 8g and 8h are one sector unit 63, the ninth, tenth and eleventh sectors 8i, 8j and 8k are one sector unit 64 and the twelfth, thirteenth and fourteenth sectors. 8l, 8m and 8n are one sector unit 65, 15th and 16th sectors 8o and 8p are one sector unit 66, 17th, 18th and 19th sectors 8q, 8r and 8s are one sector unit 67 and 20th and 21st. , 22 sectors 8t, 8u, and 8v are handled as one sector unit 68, so that the tire vulcanizer having a container divided into 8 (equal division) Ri can be attached.

  On the other hand, as shown in FIG. 5B, the first and second sectors 8a and 8b are one sector unit 71, the third, fourth, and fifth sectors 8c, 8d, and 8e are one sector unit 72, and the sixth, seventh. The sectors 8f and 8g are one sector unit 73, the eighth, ninth and tenth sectors 8h, 8i and 8j are one sector unit 74, the eleventh and twelfth sectors 8k and 8l are one sector unit 75, the thirteenth, fourteenth, 15 sectors 8m, 8n and 8o are one sector unit 76, 16th and 17th sectors 8p and 8q are one sector unit 77, 18th, 19th and 20th sectors 6r, 8s and 8t are one sector unit 78 and 21st sector. , 22 sectors 8u, 8v are treated as one sector unit 79, and the tire vulcanizer having a container divided into 9 (equal division) It can be attached.

  Further, as shown in FIG. 5C, the first, second, third, and fourth sectors 8a, 8b, 8c, and 8d are combined into one sector unit 81, and the fifth, sixth, and seventh sectors 8e, 8f, and 8g are combined into one. Sector unit 82, 8th, 9th, 10th and 11th sectors 8h, 8i, 8j and 8k as one sector unit 83, 12th, 13th, 14th and 15th sectors 8l, 8m, 8n and 8o as one sector unit 84, By treating the 16th, 17th and 18th sectors 8p, 8q and 8r as one sector unit 85 and the 19th, 20th, 21st, 22nd sectors 8s, 8t, 8u and 8v as one sector unit 86, 6 divisions (etc. It can be attached to a tire vulcanizer having a divided container.

  As shown in FIG. 5D, the first sector 8a is one sector unit 91, the second, third, and fourth sectors 8b, 8c, and 8d are one sector unit 92, and the fifth and sixth sectors 8e and 8f. 1 sector unit 93, 7th sector 8g as 1 sector unit 94, 8th and 9th sectors 8h and 8i as 1 sector unit 95, 10th and 11th sectors 8j and 8k as 1 sector unit 96, 12th. , 13 sectors 8l and 8m are one sector unit 97, 14th and 15th sectors 8n and 8o are one sector unit 98, 16th sector 8p is one sector unit 99, and 17th, 18th sectors 8q and 8r are one Sector unit 100, 19th, 20th, 21st sectors 8s, 8t, 8u into 1 sector unit 101, By treating the two sectors 8v as one sector unit 102 may be attached to a tire vulcanizer having a 12 split (equally divided) were container.

  Therefore, the tire vulcanization mold can be shared with the container tire vulcanizer divided into 6, 8, 9, and 12, and the equipment cost can be further reduced. Further, by adopting the five types of angles described above as the division angles βa to βv of the sectors 8a to 8v, the tire vulcanization mold can be shared while minimizing the number of sectors to be divided.

  In the above-described embodiment, 16 divisions, 18 divisions, and 22 divisions are shown as examples in which the side mold 3 is divided into a plurality of parts for sharing. However, the present invention is not limited thereto.

It is a perspective view which shows an example of the metal mold | die for tire shaping | molding of this invention. It is a principal part expanded sectional view of FIG. It is explanatory drawing of the sector of FIG. The other example of the metal mold | die for tire molding of this invention is shown, (a) is explanatory drawing which shows the example corresponding to a container of 8 division, (b) is explanatory drawing which shows the example corresponding to a container of 9 division, c) is an explanatory view showing an example corresponding to a container of six divisions. The further another example of the metal mold | die for tire shaping | molding of this invention is shown, (a) is explanatory drawing which shows the example corresponding to a container of 8 divisions, (b) is explanatory drawing which shows the example corresponding to a container of 9 divisions, (C) is explanatory drawing which shows the example corresponding to a container of 6 divisions, (d) is explanatory drawing which shows the example corresponding to a container of 12 divisions.

Explanation of symbols

1 Upper mold 2 Lower mold 3 Side mold 6a-6p Sector 7a-7r Sector 8a-8v Sector θa-θp Division angle

Claims (4)

An annular side mold placed between the upper and lower molds is composed of sectors divided into a plurality along the circumferential direction, and these sectors are respectively attached to a plurality of equally divided segments of the container of the tire vulcanizer. In the sectional mold for tire molding,
The side mold is divided at a plurality of different angles that are integral multiples of prime numbers constituting 360 to form a plurality of types of sectors, and one or a plurality of the plurality of types of sectors is set to the size of the segment of the container. A tire vulcanization mold that can be used in combination with tire vulcanizers equipped with containers with different divisional structures .   The side mold is divided into 16 sectors, and the division angles of these sectors are 8 types of 5 °, 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, and 40 °, and The mold for tire vulcanization according to claim 1, wherein the number of equally divided segments of the container of the tire vulcanizer is eight or nine.   The side mold is divided into 18 sectors, and the division angles of these sectors are 7 types of 5 °, 10 °, 15 °, 20 °, 25 °, 30 °, 40 °, and the tire vulcanization. The tire vulcanization mold according to claim 1, wherein the number of equally divided segments of the machine container is 6, 8, or 9.   The side mold is divided into 22 sectors, and the division angles of these sectors are five types of 5 °, 10 °, 15 °, 20 ° and 30 °, and the tire vulcanizer container is equally divided. The mold for tire vulcanization according to claim 1, wherein the number of segments formed is 6, 8, 9, or 12.

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