JP2020131660A - Tire vulcanizing apparatus - Google Patents

Abstract

To provide a structure of a tire vulcanizing container, that is capable of easily attaching multiple types of tire vulcanizing containers with different sizes without applying any special structural reinforcement.SOLUTION: There is provided a tire vulcanizing apparatus in which a tire vulcanizing container can be easily attached, the apparatus is configured such that, in respective areas Az, Bz, Cz and Dz of a vertical moving plate portion 2 which is divided into four equal regions in the circumferential direction around a center position CL of the vertical moving plate portion 2 in a plan view, reference mounting holes 4a are used which are arranged at the same radius with respect to a center position CL and are arranged at equal intervals in the circumferential direction to attach a container ring 16 of a predetermined size by an attachment bolt 6, and when a container ring 16 having a different size is attached thereto, other mounting holes 4b having the same radial position from the center position CL are used at positions different with the position of the reference mounting holes 4a arranged in the radial position and the position in the circumferential direction of the respective areas Az, Bz, Cz and Dz.SELECTED DRAWING: Figure 3

Description

The present invention relates to a tire vulcanizer, and more particularly to a tire vulcanizer capable of easily attaching a plurality of types of tire vulcanization containers having different sizes without any special reinforcement.

When manufacturing a tire, an unvulcanized tire is vulcanized while being molded by a tire vulcanization mold using a tire vulcanizer. The sectional type tire mold is composed of an upper side mold, a lower side mold and a plurality of sector molds. This tire mold is attached to a tire vulcanization container and installed in a tire vulcanizer (see, for example, Patent Document 1). The tire vulcanization container has an upper plate to which the upper side mold is attached, a lower plate to which the lower side plate is attached, and a plurality of segments to which each sector mold is attached.

The container ring is generally attached by bolts to the vertical moving plate of the tire vulcanizer. Therefore, bolt holes used for attaching a container ring of a preset size are formed in the vertical movement plate portion at appropriate positions (four places in the circumferential direction) corresponding to the container ring. By the way, the size of the tire vulcanization container differs depending on the size of the tire. Therefore, for example, when the size of the tire vulcanization container (container ring) is larger or smaller than the size preset for the tire vulcanizer, it is formed on the vertical moving plate portion thereof. Bolt holes cannot be used to attach the container ring. That is, since the tire vulcanization container cannot be used in the tire vulcanizer, a tire vulcanizer corresponding to the size of each tire vulcanization container (container ring) is required. Along with this, a large amount of equipment cost is required, so there is room for improvement.

Japanese Unexamined Patent Publication No. 2014-51032

An object of the present invention is to provide a tire vulcanizer capable of easily attaching a plurality of types of tire vulcanization containers having different sizes without any special reinforcement.

In order to achieve the above object, the tire vulcanizer of the present invention is provided with a central mechanism and a vertically moving plate portion that moves up and down above the central mechanism, and is for vulcanization to which a tire vulcanization mold is attached. A container is installed so as to surround the central mechanism, a container side member forming a part of the vulcanization container is attached to the vertical moving portion, and a reference mounting hole for attaching the container side member is provided. In each range divided into four equal parts in the circumferential direction around the central position of the vertical movement plate portion at the position corresponding to the central mechanism in a plan view, the positions having the same radius with respect to the central position are equal in the circumferential direction. In a tire vulcanizer that is arranged at intervals and that opens and closes the tire vulcanization mold by moving the vertical movement plate portion up and down.
In each of the four equal parts of the vertical movement plate portion, the position of the radius and the position in the circumferential direction are deviated from the reference mounting hole, and the positions of the radii are the same from the center position. It is characterized in that the mounting holes of are arranged.

According to the present invention, in addition to the reference mounting hole, the vertical moving plate portion has the same radius position from the center position at a position deviated from the reference mounting hole in the radial position and the circumferential position. Another mounting hole is arranged. A container for tire vulcanization of a predetermined size can be mounted using the reference mounting holes arranged in each of the four equal parts. Also, use different mounting holes located in each of the four equal areas to mount a tire vulcanization container of a different size than the tire vulcanization container that is mounted using the reference mounting holes. Can be done. Since the reference mounting hole and another mounting hole are arranged so that the radial position and the circumferential position are deviated from each other, the strength of the vertical moving plate portion is locally significantly increased due to these mounting holes. It does not decrease to. Therefore, in the tire vulcanizer of the present invention, it is possible to easily attach a plurality of types of tire vulcanization containers having different sizes without specially reinforcing the vertical moving plate portion.

It is explanatory drawing which illustrates the right half of the tire vulcanizer of this invention which attached the container for tire vulcanization in the vertical sectional view. It is explanatory drawing which illustrates the right half of the tire vulcanizer in the state which the upper plate, the container ring and the segment of FIG. 1 are moved downward and the mold is closed in the vertical cross-sectional view. It is explanatory drawing which illustrates the vertical movement plate part of FIG. 2 in a plan view. It is explanatory drawing which illustrates the container ring, the upper plate and the sector mold of FIG. 2 in a plan view. It is explanatory drawing which illustrates the right half of the tire vulcanizer in the closed state of the tire vulcanization mold of FIG. It is explanatory drawing which illustrates the container ring, the upper plate and the sector mold of FIG. 5 in a plan view. It is explanatory drawing which illustrates the state which the vertical movement plate part of FIG. 5 was removed from a container. It is explanatory drawing which illustrates the right half of the tire vulcanizer of FIG. It is explanatory drawing which illustrates another embodiment of the vertical movement plate part in a plan view. It is explanatory drawing which illustrates still another embodiment of the vertical movement plate part in a plan view. It is explanatory drawing which illustrates the right half of the tire vulcanizer of FIG. 1 in the state which attached the halving type tire vulcanization mold in the vertical cross-sectional view.

Hereinafter, the tire vulcanizer of the present invention will be described based on the embodiment shown in the figure.

The tire vulcanizer 1 (hereinafter referred to as vulcanizer 1) of the present invention illustrated in FIGS. 1 to 4 includes a central mechanism 7 and a vertical moving plate portion 2 that moves up and down above the central mechanism 7. There is. The vertical movement plate portion 2 moves up and down by a hydraulic cylinder 3 and the like. A disk-shaped clamp portion 9 is attached to the central post 7a constituting the central mechanism 7 at a vertical interval. The upper end portion and the lower end portion of the cylindrical vulcanization bladder 8 are gripped by the respective clamp portions 9.

When vulcanizing the unvulcanized tire T, a vulcanization container 11 (11A, 11B, 1C, hereinafter collectively referred to as a container 11) is attached to the vulcanizer 1, and the container 11 is used for tire vulcanization. A mold 10 (hereinafter referred to as a mold 10) is attached. The container 11 is installed so as to surround the central mechanism 7. Not only one size container 11A but also containers 11B and 11C having different sizes can be attached to one vulcanizer 1.

A container ring 16 is attached to the vertical moving plate portion 2 as a container-side member forming a part of the container 11A. The vertical movement plate portion 2 is formed with a reference mounting hole 4a for mounting the contouring 16 and a mounting hole 4b different from the reference mounting hole 4a. Details of the reference mounting hole 4a and another mounting hole 4b will be described later.

The container 11A has an upper plate 12, a lower plate 13, and a plurality of segments 14 in addition to the container ring 16. A sectional type mold 10 is attached to the container 11A. The mold 10 has an annular upper side mold 10a, an annular lower side mold 10b, and a plurality of arc-shaped sector molds 10c in a plan view.

The upper surface of the upper side mold 10a is attached to the lower surface of the upper plate 12 so as to face each other. The upper plate 12 moves up and down together with the upper side mold 10a independently of the vertically moving plate portion 2 (container ring 16) by a driving means (not shown). The lower surface of the lower side mold 10b is attached to the upper surface of the lower plate 13 so as to face each other. The lower plate 13 is fixed to the ground base in an immovable state. The outer peripheral surfaces of the sector mold 10c are attached to each of the segments 14 so as to face each other on the inner peripheral side thereof.

Each sector mold 10c (segment 14) is arranged in an annular shape around the central mechanism 7. That is, as illustrated in FIG. 4, each sector mold 10c (segment 14) is arranged in an annular shape in a plan view, and the annular center thereof is indicated by the alternate long and short dash line CL. The central mechanism 7 (center post 7a) is arranged at the annular center CL. The annular center CL becomes the annular center of the upper side mold 10a and the lower side mold 10b. In FIGS. 1 and 2, the right half of the vulcanizer 1, the container 11A, and the mold 10 are shown, but the left half has substantially the same structure as the right half.

The outer peripheral surface of each segment 14 is inclined from the upper side to the lower side toward the outer peripheral side. In each segment 14, a guide groove 15 extends in the vertical direction along the outer peripheral inclined surface thereof.

The cylindrical container ring 16 is arranged around the central mechanism 7 (annular center CL), and moves up and down on the outer peripheral side of each segment 14. The inner peripheral surface of the container ring 16 is inclined from the upper side to the lower side toward the outer peripheral side. The inner peripheral inclined surface of the container ring 16 and the outer peripheral inclined surface of each segment 14 are arranged so as to face each other.

A plurality of guide keys 16a are arranged on the inner peripheral inclined surface of the container ring 16 at intervals in the circumferential direction. These guide keys 16a extend in the vertical direction along the inner peripheral inclined surface of the container ring 16. Each guide key 16a is engaged with the corresponding guide groove 15, and the guide key 16a (inner peripheral inclined surface of the container ring 16) and the guide groove 15 (outer peripheral inclined surface of each segment 14) slide. It is configured. In this embodiment, each segment 14 is suspended from the container ring 16 by a guide key 16a that engages with the guide groove 15.

As illustrated in FIG. 3, the reference mounting holes 4a (4a ₁ , 4a ₂ , 4a ₃ ) are located at the center position of the vertically moving plate portion 2 (that is, the annular center CL) corresponding to the position of the center mechanism 7 in a plan view. ) Is arranged in the respective ranges Az, Bz, Cz, and Dz divided into four equal parts in the circumferential direction. The reference mounting holes 4a (4a ₁ , 4a ₂ , 4a ₃ ) arranged in the respective ranges Az, Bz, Cz, and Dz are equal to each other in the circumferential direction at positions having the same radius with respect to the annular center CL. They are arranged at intervals (90 ° intervals). In this embodiment, three reference mounting holes 4a (4a ₁ , 4a ₂ , 4a ₃ ) are arranged in each range Az, Bz, Cz, and Dz, and these three reference mounting holes 4a ₁ , 4a are arranged. ₂ , 4a ₃ are located at different radii with respect to the annular center CL. Then, the reference mounting holes 4a ₁ located on the innermost side in each of the ranges Az, Bz, Cz, and Dz are located at the same radius. The reference mounting holes 4a ₂ located second from the inner circumference side in each range Az, Bz, Cz, Dz are located at the same radius, and are located on the outermost side in each range Az, Bz, Cz, Dz. The reference mounting holes 4a ₃ to be used are located at the same radius. The number of reference mounting holes 4a arranged in each range Az, Bz, Cz, and Dz is not limited to three, and may be, for example, one, two, or four or more.

Further, three separate mounting holes 4b (4b ₁ , 4b ₂ , 4b ₃ ) are arranged in each range Az, Bz, Cz, and Dz, and these three separate mounting holes 4b (4b ₁ , 4b) are arranged. ₂ , 4b ₃ ) are located at different radii with respect to the annular center CL. Then, the other mounting holes 4b ₁ located on the innermost side in the respective ranges Az, Bz, Cz, and Dz are located at the same radius. The other mounting holes 4b ₂ located second from the inner circumference side in each range Az, Bz, Cz, Dz are located at the same radius, and are located on the outermost side in each range Az, Bz, Cz, Dz. The located reference mounting holes 4b ₃ are located at the same radius. In the respective ranges Az, Bz, Cz, and Dz, another mounting hole 4b is arranged at a position deviated from the reference mounting hole 4a in the radial position and the circumferential position. The number of different mounting holes 4b arranged in each range Az, Bz, Cz, and Dz is not limited to three, and may be, for example, one, two, or four or more.

Bolt holes 16b are formed on the upper surface of the container ring 16 at positions corresponding to the respective reference mounting holes 4a (4a ₂ ). The container ring 16 is attached to the vertical moving plate portion 2 by mounting bolts 6 communicating with the reference mounting holes 4a (4a ₂ ) and the bolt holes 16b, respectively. In this embodiment, the container ring 16 is attached to the vertical moving plate portion 2 using a total of four reference mounting holes 4a (4a ₂ ) arranged in the respective ranges Az, Bz, Cz, and Dz. Depending on the specifications of the container ring 16, _one reference mounting hole 4a ₁ arranged at the same radius in each range Az, Bz, Cz, Dz may be used, or each range Az, Bz, Cz may be used. , The container ring 16 may be attached to the vertical moving plate portion 2 by using the reference mounting holes 4a ₃ arranged in Dz one by one.

As illustrated in FIG. 4, a plurality of notches 12a are formed on the outer peripheral surface of the upper plate 12 at intervals in the circumferential direction. The notch portion 12a is continuous from the upper surface to the lower surface of the upper plate 12. The notch portion 12a corresponds to each guide key 16a, and is formed to prevent interference between the guide key 16a and the upper plate 12.

Next, a procedure for vulcanizing the unvulcanized tire T using the vulcanizer 1, the container 11A and the mold 10 will be described.

When vulcanizing the unvulcanized tire T, after the container 11A to which the mold 10 is attached is installed in the vulcanizer 1, as shown in FIG. 1, the unvulcanized tire T is not vulcanized inside the greatly opened mold 10. Place the vulcanized tire T. The unvulcanized tire T is placed on the lower side mold 10b in a sideways state.

Next, the upper side mold 10a is moved downward together with the upper plate 12 in the upper standby position, and the container ring 16 and each segment 14 are moved downward together with the vertically moving plate portion 2. As a result, as illustrated in FIG. 2, each segment 14 is placed on the upper surface of the lower plate 13 so that each segment 14 is sandwiched between the upper and lower plates 12 and the lower plate 13. In this state, as illustrated in FIG. 4, each segment 14 (sector mold 10c) is arranged at a position where the diameter is enlarged in a plan view.

Next, the container ring 16 is further moved downward from the state shown in FIG. 2 together with the vertical movement plate portion 2. As a result, the guide key 16a moves downward along the guide groove 15, and the outer peripheral inclined surface of each segment 14 is pressed by the inner peripheral inclined surface of the container ring 16 that moves downward. As a result, as illustrated in FIGS. 5 and 6, each sector mold 10c moves close to the annular center CL, and these sector molds 10c are assembled in an annular shape to close the mold 10.

In the closed mold 10, the vulcanizing bladder 8 is expanded inside the unvulcanized tire T to apply a predetermined pressure to the unvulcanized tire T and heat it at a predetermined temperature for vulcanization. I do. As a result, the unvulcanized tire T is vulcanized to complete the tire. After vulcanization, the mold 10 is opened and the completed tire is taken out from the vulcanizer 1.

After vulcanizing a required number of tires using this mold 10, the container 11 is removed from the vulcanizer 1 in order to replace it with another mold 10. As illustrated in FIG. 7, the container 11 to be removed is in a state in which the vulcanized tire is taken out. In this state, as illustrated in FIG. 7, the mounting bolt 6 is removed from the reference mounting holes 4a and the bolt holes 16b, respectively, and the vertical moving plate portion 2 is moved upward. As a result, the container 11A is removed from the vertical moving plate portion 2.

Next, the upper plate 12 is removed upward from the container 11A. After that, the upper side mold 10a, the container ring 16, each segment 14, and the lower side mold 10b are removed from the vulcanizer 1, and the container 11A is removed from the vulcanizer 1. When the container 11A is installed in the vulcanizer 1, the reverse procedure for removing the container 11A may be performed.

When a container 11B having a size smaller than that of the container 11A is attached to the vulcanizer 1, as illustrated in FIG. 8, another attachment hole 4b arranged in each range Az, Bz, Cz, Dz and another attachment hole 4b are used. The container ring 16 is attached to the vertical moving plate portion 2 by the bolt 6 communicating with the bolt hole 16b corresponding to the mounting hole 4b.

In this way, in the respective ranges Az, Bz, Cz, and Dz of the vertical movement plate portion 2, in addition to the reference mounting hole 4a, the radial position and the circumferential position are deviated from the reference mounting hole 4a. Another mounting hole 4b having the same radius position from the annular center CL is arranged. Then, a container 11A (container ring 16) of a predetermined size can be attached to the vertical moving plate portion 2 by using the reference mounting holes 4a arranged in the respective ranges Az, Bz, Cz, and Dz. Further, a container 11B (container ring 16) having a size different from that of the container 11A can be attached to the vertical moving plate portion 2 by using different mounting holes 4b arranged in the respective ranges Az, Bz, Cz, and Dz. it can. That is, the container 11A (container ring 16) moves up and down using the reference mounting holes 4a arranged at the same radius positions arranged in the respective ranges Az, Bz, Cz, and Dz, or another mounting hole 4b. It is attached to the plate portion 2.

When forming reference mounting holes 4a (4a ₁ , 4a ₂ , 4a ₃ ) in the respective ranges Az, Bz, Cz, and Dz with different radial positions and the same circumferential position, the vertical movement plate portion 2 It is necessary to increase the distance between the reference mounting holes 4a (4a ₁ , 4a ₂ , 4a ₃ ) adjacent to each other in the radial direction to some extent in consideration of the durability of the above. In the present invention, the reference mounting holes 4a arranged in the respective ranges Az, Bz, Cz, and Dz and the other mounting holes 4b are arranged so as to be displaced in the circumferential direction. In Bz, Cz, and Dz, even if the distance between the reference mounting hole 4a and another mounting hole 4b in the radial direction is made smaller, the durability of the vertically moving plate portion 2 is less likely to decrease. In each range Az, Bz, Cz, and Dz, the deviation of the position in the circumferential direction between the reference mounting hole 4a and another mounting hole 4b is, for example, 10 ° or more and 45 ° or less.

Therefore, the strength of the vertical moving plate portion 2 is not significantly reduced locally due to these mounting holes 4a and 4b. As a result, in this vulcanizer 1, it becomes possible to easily attach a plurality of types of containers 11 having different sizes without specially reinforcing the vertical moving plate portion 2.

Even with one vulcanizer 1, the unvulcanized tire T can be vulcanized using a plurality of types of containers 11 (molds 10) having different sizes, so that the size of the container 11 (that is, the tire size) can be adjusted. It is not necessary to prepare a large number of vulcanizers 1 having different sizes corresponding to each other. This contributes to reduction of equipment cost and improvement of tire productivity.

In the embodiment illustrated in FIG. 3, different mounting holes 4b are provided in the respective ranges Az, Bz, Cz, and Dz divided into four equal parts at equal intervals (90 ° intervals) in the circumferential direction with respect to the annular center CL. Have been placed. In each range Az, Bz, Cz, Dz, another mounting hole 4b can be arranged as illustrated in FIG. In FIG. 9, in the facing ranges Az and Cz, another mounting hole 4b is arranged on a straight line passing through the annular center CL. Similarly, in the opposing ranges Bz and Dz, another mounting hole 4b is arranged on a straight line passing through the annular center CL.

However, the other mounting holes 4b arranged in the ranges Az and Bz are arranged at intervals X smaller than 90 ° in the circumferential direction. Similarly, the other mounting holes 4b arranged in the ranges Cz and Dz are also arranged at intervals X smaller than 90 ° in the circumferential direction. On the other hand, the other mounting holes 4b arranged in the ranges Bz and Cz are arranged at intervals Y larger than 90 ° in the circumferential direction. Similarly, the other mounting holes 4b arranged in the ranges Dz and Az are arranged at intervals Y larger than 90 ° in the circumferential direction.

As illustrated in FIG. 10, each of the other mounting holes 4b can be an elongated hole extending in the radial direction. For example, the spacer 5 is fitted into the mounting hole 4b of the slotted hole, and the position of the mounting hole 4b of the slotted hole (the position where the mounting bolt 6 is inserted) is set to a position having a radius different from that of the reference mounting hole 4a. ..

The mold 10 attached to the container 11 is not limited to the sectional type described above, and is divided into two, as illustrated in FIG. 11, composed of an upper mold 10d and a lower mold 10e arranged vertically opposed to each other. It may be a type. The container 11C to which the halved mold 10 is attached includes an upper segment 14a to which the upper mold 10d is attached, a lower segment 14b to which the lower mold 10e is attached, an upper plate 12A to which the upper segment 14a is attached, and a lower portion. It has a lower plate 13A to which the side segment 14b is attached.

Bolt holes 16b are formed on the upper surface of the upper plate 12A at positions corresponding to the respective reference mounting holes 4a (4a ₂ ). The upper plate 12A is attached to the vertical moving plate portion 2 by mounting bolts 6 communicating with the reference mounting holes 4a (4a ₂ ) and the bolt holes 16b, respectively. In this way, the upper plate 12A is attached to the vertical moving plate portion 2 as a container-side member. Since another mounting hole 4b is also formed in the vertical moving plate portion 2, depending on the size of the container 11C, another mounting hole 4b arranged in each range Az, Bz, Cz, Dz and these mounting holes 4b It may be attached to the vertical moving plate portion 2 by the mounting bolt 6 communicating with the bolt hole 16b corresponding to the hole 4b.

1 Vulcanizer 2 Vertical movement plate 3 Hydraulic cylinder 4a Reference mounting hole 4b Another mounting hole 5 Spacer 6 Mounting bolt 7 Center mechanism 7a Center post 8 Vulcanization bladder 9 Clamp part 10 Tire vulcanization mold 10a Upper side mold 10b Lower side mold 10c Sector mold 10d Upper mold 10e Lower mold 11 (11A, 11B, 11C) Tire vulcanization container 12, 12A Upper plate 12a Notch 13, 13A Lower plate 14 Segment 14a Upper segment 14b Lower side Segment 15 Guide groove 16 Container ring 16a Guide key 16b Bolt hole T Unvulcanized tire

Claims (5)

A vulcanization container having a central mechanism and a vertically moving plate portion that moves up and down above the central mechanism and to which a tire vulcanization mold is attached is installed so as to surround the central mechanism and moves up and down. A container-side member forming a part of the vulcanization container is attached to the portion, and a reference mounting hole for attaching the container-side member is located at a position corresponding to the central mechanism in a plan view. In each range divided into four equal parts in the circumferential direction around the center position of the above, the vertical movement plate portion moves up and down at positions having the same radius as the center position and at equal intervals in the circumferential direction. As a result, in the tire vulcanizer that opens and closes the tire vulcanization mold,
In each of the four equal parts of the vertical movement plate portion, the position of the radius and the position in the circumferential direction are deviated from the reference mounting hole, and the positions of the radii are the same from the center position. A tire vulcanizer characterized in that the mounting holes are arranged. The tire vulcanizer according to claim 1, wherein the other mounting holes are arranged at equal intervals in the circumferential direction. The tire vulcanizer according to claim 1 or 2, wherein the other mounting holes are elongated holes extending in the radial direction, respectively. The tire vulcanization mold is a sectional type composed of a plurality of sector molds assembled in an annular shape, and an upper side mold and a lower side mold arranged so as to sandwich the sector molds vertically, and is a container side. The tire vulcanizer according to any one of claims 1 to 3, wherein the member is a container ring. A claim in which the tire vulcanization mold is a two-piece type composed of an upper mold and a lower mold arranged vertically opposed to each other, and the container side member is an upper plate to which the upper mold is attached. Item 4. The tire vulcanizer according to any one of Items 1 to 3.

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