KR101328081B1 - Stud hole pin preparation member in the vulcanizing mold - Google Patents

Stud hole pin preparation member in the vulcanizing mold Download PDF

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Publication number
KR101328081B1
KR101328081B1 KR1020100124141A KR20100124141A KR101328081B1 KR 101328081 B1 KR101328081 B1 KR 101328081B1 KR 1020100124141 A KR1020100124141 A KR 1020100124141A KR 20100124141 A KR20100124141 A KR 20100124141A KR 101328081 B1 KR101328081 B1 KR 101328081B1
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KR
South Korea
Prior art keywords
pin
stud hole
stud
mounting body
space
Prior art date
Application number
KR1020100124141A
Other languages
Korean (ko)
Other versions
KR20120063102A (en
Inventor
김상협
박주배
Original Assignee
한국타이어 주식회사
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 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020100124141A priority Critical patent/KR101328081B1/en
Publication of KR20120063102A publication Critical patent/KR20120063102A/en
Application granted granted Critical
Publication of KR101328081B1 publication Critical patent/KR101328081B1/en

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    • 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
    • B29D30/66—Moulding treads on to tyre casings, e.g. non-skid treads with spikes
    • 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
    • B29D30/66—Moulding treads on to tyre casings, e.g. non-skid treads with spikes
    • B29D2030/662—Treads with antiskid properties, i.e. with spikes

Abstract

The present invention causes the pins to be released to rotate when the stud forming pins embedded in the stud holes are separated from the stud holes of the tire, and when the stud forming pins embedded in the stud holes are separated from the stud holes of the tire, The pin will slide out of the stud hole of the tire to prevent damage to the stud hole.

Description

Installation apparatus for pins for forming stud hole of vulcanizing mold {Stud hole pin preparation member in the vulcanizing mold}

The present invention relates to an installation apparatus for stud hole forming pins installed in a mold for snow tire vulcanization.

In the manufacture of winter stud tires, defects due to cracks in the stud holes make it difficult to meet the product's delivery time and cause significant losses for the company. Most of the cracks in the stud holes occur when the tire is removed from the vulcanized mold after vulcanization.

In the vulcanized mold, the tread forming part is composed of several sectors divided into radially divided planes, and each sector moves forward and backward in the radial direction in the direction opposite to the center of the mold with respect to the center of each sector. And move in the radial direction outward to separate the tire. However, the stud hole forming pins provided in each sector of the mold are also separated from the tire by moving outward in the radial line with respect to the center of each sector, regardless of whether the pins are installed or considered in any position of each sector.

Therefore, the farther from the center of the stud hole installation pin, which is installed far from the center of each sector, as the farther from the center, the deviation angle of the tire is displaced, resulting in excessive deformation of the tread of the tire. do. That is, in FIG. 1 of the accompanying drawings, among the plurality of stud hole forming pins (B) (B2) provided in the sector, the installation direction of the pin (B) provided in the center of the sector is a tire. (C) The withdrawal direction (B) of the sector (A), which is the separation angle when the sector (A) is separated, coincides, but the installation direction (A) of the pin (B2) provided far from the center of the sector (A) ) Does not coincide with the direction of movement (B) of the sector when the sector is disengaged from the tire (C), so that the pin (B2) disengages the stud hole of the tire. It may be damaged.

In order to prevent such a stud hole from being broken, conventionally, the lower shape of the stud hole forming pin (inside the tread) is formed in a smooth curved surface to facilitate the removal of the stud forming pin from the stud hole. Forming the shape of the bottom of the pin into a smooth curved surface now has the drawback that the studs mounted on the tire easily slip away.

Accordingly, the present invention is to solve the problem that even if the pin forming the stud hole is far from the center portion of the sector, the mold should be provided so that the pin leaving the stud hole is less likely to break the stud hole.

In order to solve the above problems, the present invention, when the stud forming pin embedded in the stud hole is separated from the stud hole of the tire, the pin is to be rotated around the head of the pin, the stud hole of the vulcanized mold An installation device for forming pins is provided.

In the present invention as described above, when the stud forming pin embedded in the stud hole is separated from the stud hole of the tire, the detached pin is rotated about the head of the pin, so that the separated pin slides the stud hole of the tire. It is effective to prevent breakage of the stud hole by exiting.

1 is an explanatory view of a state in which a pin for forming a stud hole of a mold is separated from a stud hole of a tire;
Fig. 2 is a state explanatory diagram in which a pin provided at the center of the sector is detached;
3 is a state explanatory diagram in which pins installed at positions far from the center of a sector are separated;
4 is an explanatory diagram of a state where a molding pin is inserted into a stud hole;

     According to the present invention,

    It consists of a mounting body (1) to be installed in the tread molding sector (S) of the vulcanizing mold, and a pin (2) installed inside the mounting body (1),

    The mounting body 1 has a space 11 in the center, and the space 11 has a stopper 12 therein,

   The pin 2 is composed of a stud hole forming head 21 and the interpolation portion 22 coupled to the head 21 and installed in the space portion 11 of the mounting body 1,

    Provided is a stud hole forming pin installation device, characterized in that the front end 221 of the interpolation portion 22 is mounted to the stopper 12 of the space portion (11).

    It is preferable that the space lower end diameter W1 of the mounting body 1 is larger than the lower end diameter W2 of the insertion part 22 and smaller than the upper end diameter W3 of the head 21. Thus, it is preferable to have a play 3 at the lower end of the mounting body 1 and the space 11.

   The clearance 3 due to the difference in diameter between the lower end of the space part 11 and the lower end of the insertion part 22 of the mounting body 1 may introduce rubber during vulcanization and may impair the positioning of the head 21. . Thus, the present invention provides an installation apparatus for the stud hole forming pin, which further has a stopper 222 at the lower end of the interpolation portion 22, as shown in FIG.

 In the vulcanization operation, the stopper 22 as described above should be firmly blocking the lower end of the space 11 of the mounting body 1, so that the present invention provides a spring ball stopper 5 which allows the stopper 22 to stay in place. Further, there is provided a device for installing stud hole forming pins.

According to the present invention constituted as described above, the tire vulcanized in a state in which the stopper 222 of the insertion part 22 blocks the lower end of the space part 11 of the mounting body 1, as shown in FIG. When the sector S is moved after the vulcanization is completed, the interpolation portion 22 moves along the moving sector S, which is installed at a position far from the center of the sector as shown in FIG. When the pin is disengaged, the tip 221 of the interpolation portion 22 is fluid in the space portion 11, so the pin 2 is inclined about the tip 221 caught on the stopper 12, and the tire studs are inclined. Exit from the hole reduces the damage to the stud hole.

1. Mounting body
11. Space
12. jersey
2. Pin
21. Stud forming head
22. Insertion part
221. Tip
222. Spigot
3. play
4. Spring Ball Stopper

Claims (3)

delete It consists of a mounting body (1) to be installed in the tread molding sector (S) of the vulcanizing mold, and a pin (2) installed inside the mounting body (1),
The mounting body 1 has a space 11 in the center, and the space 11 has a stopper 12 therein,
The pin 2 is composed of a stud hole forming head 21 and the interpolation portion 22 coupled to the head 21 and installed in the space portion 11 of the mounting body 1,
The tip 221 of the interpolation portion 22 is installed to be caught by the stopping jaw 12 of the space portion 11, and the space lower end diameter W1 of the mounting body 1 is the lower diameter of the interpolation portion 22 ( W2) is larger than the upper end diameter W3 of the head 21, and has a clearance 3 at the lower end of the space portion 11 of the mounting body 1, and the insertion part 22 has a stopper at the lower end ( 222) further, the stopper 222 is the installation device of the stud hole forming pin of the vulcanized mold, characterized in that the bottom of the space 111.
The stud hole of the vulcanizing mold according to claim 2, wherein the lower end of the space portion (11) of the mounting body (1) further has a spring ball stopper (4) for the stopper (22) to remain in place. Mounting device for forming pin.
KR1020100124141A 2010-12-07 2010-12-07 Stud hole pin preparation member in the vulcanizing mold KR101328081B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100124141A KR101328081B1 (en) 2010-12-07 2010-12-07 Stud hole pin preparation member in the vulcanizing mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100124141A KR101328081B1 (en) 2010-12-07 2010-12-07 Stud hole pin preparation member in the vulcanizing mold

Publications (2)

Publication Number Publication Date
KR20120063102A KR20120063102A (en) 2012-06-15
KR101328081B1 true KR101328081B1 (en) 2013-11-08

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Application Number Title Priority Date Filing Date
KR1020100124141A KR101328081B1 (en) 2010-12-07 2010-12-07 Stud hole pin preparation member in the vulcanizing mold

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KR (1) KR101328081B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5855612B2 (en) * 2013-07-23 2016-02-09 住友ゴム工業株式会社 Spike tire mold

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001038736A (en) * 1999-05-26 2001-02-13 Pirelli Pneumatici Spa Manufacture of tire for vehicle wheel, vulcanization mold for tire, and stud for vehicle wheel tire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001038736A (en) * 1999-05-26 2001-02-13 Pirelli Pneumatici Spa Manufacture of tire for vehicle wheel, vulcanization mold for tire, and stud for vehicle wheel tire

Also Published As

Publication number Publication date
KR20120063102A (en) 2012-06-15

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