JP7207005B2 - tire vulcanizer - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire vulcanizer, and more particularly to a tire vulcanizer capable of easily mounting a plurality of types of tire vulcanizing containers of different sizes without special reinforcement.

When manufacturing a tire, a tire vulcanizer is used to vulcanize an unvulcanized tire while shaping it with a tire vulcanizing mold. A sectional type tire mold consists of an upper side mold, a lower side mold and a plurality of sector molds. This tire mold is attached to a tire vulcanizing container and installed in a tire vulcanizer (see, for example, Patent Document 1). A tire vulcanizing container has an upper plate to which an upper side mold is attached, a lower plate to which a lower side plate is attached, and a plurality of segments to which respective sector molds are attached.

The container ring is typically bolted to the up-and-down plate of the tire vulcanizer. For this reason, the vertically movable plate portion is provided with bolt holes used for attaching a container ring of a preset size at appropriate positions (four locations in the circumferential direction) corresponding to the container ring. By the way, the size of the tire vulcanizing container differs depending on the size of the tire. Therefore, for example, when the size of the tire vulcanizing container (container ring) is larger or smaller than the size preset for the tire vulcanizer, a Bolt holes cannot be used to attach the container ring. That is, since the tire vulcanizing container cannot be used with the tire vulcanizing machine, a tire vulcanizing machine corresponding to the size of each tire vulcanizing container (container ring) is required. In connection with this, there is room for improvement because a great equipment cost is required.

JP 2014-51032 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a tire vulcanizer capable of easily mounting a plurality of types of tire vulcanizing containers of different sizes without special reinforcement.

In order to achieve the above object, the tire vulcanizer of the present invention comprises a central mechanism and a vertically movable plate portion that moves vertically above the central mechanism. A container is installed so as to surround the central mechanism, a container-side member forming part of the vulcanization container is attached to the vertically movable plate portion, and a reference attachment hole for attaching the container-side member is provided. , in each range circumferentially divided into quarters around the central position of the vertically movable plate portion at a position corresponding to the central mechanism in a plan view, at positions with the same radius with respect to the central position, in the circumferential direction In a tire vulcanizer that is arranged at equal intervals and opens and closes the tire vulcanizing mold by moving the vertically moving plate portion vertically,
In each of the four equally divided ranges of the vertically movable plate portion, separate radial positions are set at the same radial positions from the center position at positions shifted from the reference mounting holes in the radial position and in the circumferential direction. mounting holes are arranged.

According to the present invention, in addition to the reference mounting hole, the vertically movable plate portion is provided with the same radial position from the center position at a position shifted radially and circumferentially from the reference mounting hole. Separate mounting holes are provided for the A tire vulcanizing container of a predetermined size can be mounted using reference mounting holes located in each of the quadrants. Also, using separate mounting holes located in each of the quadrants, a tire vulcanizing container of a different size than the tire vulcanizing container mounted using the standard mounting holes may be mounted. can be done. Since the reference mounting hole and the other mounting hole are arranged such that the position of the radius and the position of the circumferential direction are deviated, the strength of the vertically movable plate portion is locally significantly increased due to these mounting holes. nor will it drop to Therefore, in the tire vulcanizer of the present invention, it is possible to easily attach a plurality of types of tire vulcanizing containers of different sizes without special reinforcement of the vertically movable plate portion.

FIG. 2 is an explanatory view illustrating the right half of the tire vulcanizer of the present invention to which a tire vulcanizing container is attached, as viewed in longitudinal section; FIG. 2 is an explanatory diagram illustrating the right half of the tire vulcanizer in a state where the upper plate, container ring, and segments in FIG. 1 are moved downward and the mold is closed, as viewed in longitudinal section; FIG. 3 is an explanatory diagram illustrating the vertically movable plate portion of FIG. 2 in a plan view; FIG. 3 is an explanatory view illustrating the container ring, upper plate and sector mold of FIG. 2 in plan view; FIG. 3 is an explanatory diagram illustrating the right half of the tire vulcanizer in a state in which the tire vulcanizing mold of FIG. 2 is closed, as viewed in longitudinal section; FIG. 6 is an explanatory view illustrating the container ring, top plate and sector mold of FIG. 5 in plan view; FIG. 6 is an explanatory diagram illustrating a state in which the vertically movable plate portion of FIG. 5 is removed from the container; FIG. 3 is an explanatory diagram illustrating, in vertical cross-section, the right half of the tire vulcanizer of FIG. 1 to which another container is attached using another attachment hole; It is an explanatory view which illustrates another embodiment of an up-and-down movement board part by plane view. It is an explanatory view which illustrates another embodiment of an up-and-down movement board part by plane view. FIG. 2 is an explanatory diagram illustrating, in vertical cross-section, the right half of the tire vulcanizer of FIG. 1 to which a split type tire vulcanizing mold is attached.

BEST MODE FOR CARRYING OUT THE INVENTION A tire vulcanizer of the present invention will be described below based on embodiments shown in the drawings.

A tire vulcanizer 1 (hereinafter referred to as vulcanizer 1) of the present invention illustrated in FIGS. there is The vertically movable plate portion 2 is vertically moved by a hydraulic cylinder 3 or the like. A disk-shaped clamp portion 9 is attached to a central post 7a that constitutes the central mechanism 7 with a space therebetween in the vertical direction. Upper and lower ends of a cylindrical vulcanizing bladder 8 are held by the respective clamping portions 9 .

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

A container ring 16 is attached to the vertically movable plate portion 2 as a container-side member forming part of the container 11A. A reference mounting hole 4a for mounting the contour ring 16 and a mounting hole 4b separate from the reference mounting hole 4a are formed in the vertically movable plate portion 2. As shown in FIG. Details of the reference mounting hole 4a and another mounting hole 4b will be described later.

This container 11A has a container ring 16 as well as an upper plate 12, a lower plate 13 and a plurality of segments 14. As shown in FIG. 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 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 it. The upper plate 12 is vertically moved together with the upper side mold 10a independently of the vertically movable plate portion 2 (container ring 16) by 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 it. The lower plate 13 is immovably fixed to the ground base. Each segment 14 is attached to the inner peripheral side thereof so as to face the outer peripheral surface of the sector mold 10c.

Each sector mold 10c (segment 14) is annularly arranged with the central mechanism 7 as the center. 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 center of the annular shape is indicated by a dashed line CL. The center mechanism 7 (center post 7a) is arranged at the annular center CL. This annular center CL becomes the annular center of the upper side mold 10a and the lower side mold 10b. 1 and 2 show the right halves of the vulcanizer 1, the container 11A and the mold 10, the left halves have substantially the same structure as the right halves.

The outer peripheral surface of each segment 14 is inclined downward from above toward the outer peripheral side. Each segment 14 has a guide groove 15 extending vertically along its outer peripheral inclined surface.

A cylindrical container ring 16 is arranged around a center 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 downward from above toward the outer peripheral side. The inner slanted surface of the container ring 16 and the outer slanted surface of each segment 14 are arranged to face each other.

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

As exemplified in FIG. 3, the reference mounting holes 4a (4a ₁ , 4a ₂ , 4a ₃ ) are located at the central position of the vertically movable plate portion 2 corresponding to the position of the central mechanism 7 in plan view (that is, the annular center CL ) are arranged in respective ranges Az, Bz, Cz, and Dz equally divided in the circumferential direction. The reference mounting holes 4a (4a ₁ , 4a ₂ , 4a ₃ ) arranged in the ranges Az, Bz, Cz, and Dz are arranged in the circumferential direction at the same radial positions 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 of the ranges Az, Bz, Cz, Dz, and these three reference mounting holes 4a ₁ , 4a ₂ , 4a ₃ are located at different radii with respect to the toric center CL. The innermost reference mounting holes 4a ₁ in each of the ranges Az, Bz, Cz, and Dz are located at the same radius. The reference mounting holes 4a2 located _second from the inner periphery in each range Az, Bz, Cz, and Dz are located at the same radius, and are located at the outermost periphery in each range Az, Bz, Cz, and Dz. The corresponding reference mounting holes 4a3 _are located at the same radius. The number of reference mounting holes 4a arranged in each of the ranges Az, Bz, Cz, and Dz is not limited to three, and can be, for example, one, two, or four or more.

In addition, three separate mounting holes 4b (4b ₁ , 4b ₂ , 4b ₃ ) are arranged in each of the ranges Az, Bz, Cz, Dz, and these three separate mounting holes 4b (4b ₁ , 4b ₂ , 4b ₃ ) are located at different radii with respect to the toric center CL. Further, the other mounting holes 4b ₁ located on the innermost side in each of the ranges Az, Bz, Cz, and Dz are located at the same radius. Another mounting hole 4b2 located _second from the inner peripheral side in each range Az, Bz, Cz, Dz is located at the same radial position, and is located at the outermost peripheral side in each range Az, Bz, Cz, Dz. The positioned reference mounting holes 4b3 _are located at the same radius. Further, in each of the ranges Az, Bz, Cz, and Dz, another mounting hole 4b is arranged at a position shifted radially and circumferentially from the reference mounting hole 4a. The number of separate mounting holes 4b arranged in each of the ranges Az, Bz, Cz, and Dz is not limited to three, and can be, for example, one, two, or four or more.

Bolt holes 16b are formed in 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 mounted on the vertically movable plate portion 2 by means of mounting bolts 6 communicating with the respective reference mounting holes 4a (4a ₂ ) and bolt holes 16b. In this embodiment, the container ring 16 is attached to the vertically movable plate portion 2 using a total of four reference attachment holes 4a (4a ₂ ) arranged in respective ranges Az, Bz, Cz, and Dz. Depending on the specifications of the container ring 16, each of the ranges Az, Bz, Cz, and Dz may use _one reference mounting hole 4a1 arranged at the same radial position, or each of the ranges Az, Bz, and Cz , Dz, the container ring 16 may be attached to the vertically movable plate portion ₂ by using one reference attachment hole 4a3.

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 top surface to the bottom surface of the upper plate 12 . The notch 12a corresponds to each guide key 16a and is formed to prevent interference between the guide key 16a and the upper plate 12. As shown in FIG.

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 illustrated in FIG. A sulfur tire T is placed. The unvulcanized tire T is laid down on the lower side mold 10b.

Next, the upper side mold 10a is moved downward together with the upper plate 12 in the standby position above, and the container ring 16 and each segment 14 are moved downward together with the vertically movable plate portion 2. As shown in FIG. Thereby, 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 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 plan view.

Next, the container ring 16 is further moved downward from the state shown in FIG. 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 closer to the annular center CL, and these sector molds 10c are assembled in an annular shape to close the mold 10. FIG.

In the closed mold 10, the vulcanizing bladder 8 is inflated inside the unvulcanized tire T to apply a predetermined pressure to the unvulcanized tire T and to vulcanize it by heating at a predetermined temperature. I do. As a result, the unvulcanized tire T is vulcanized and the tire is completed. After vulcanization, the mold 10 is opened and the completed tire is removed from the vulcanizer 1. - 特許庁

After vulcanizing the 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. - 特許庁As illustrated in FIG. 7, the container 11 to be removed is in a state in which the vulcanized tire has been removed. In this state, as illustrated in FIG. 7, the mounting bolts 6 are removed from the respective reference mounting holes 4a and bolt holes 16b, and the vertically movable plate portion 2 is moved upward. As a result, the container 11A is removed from the vertically movable plate portion 2. As shown in FIG.

Next, the top plate 12 is removed upward from the container 11A. Thereafter, the upper side mold 10a, container ring 16 and respective segments 14, lower side mold 10b are removed from the vulcanizer 1, and the container 11A is removed from the vulcanizer 1. When installing the container 11A in the vulcanizer 1, the procedure for removing the container 11A may be reversed.

When attaching a container 11B smaller in size than the container 11A to the vulcanizer 1, as illustrated in FIG. The container ring 16 is attached to the vertically movable plate portion 2 with the bolts 6 communicating the bolt holes 16b corresponding to the attachment holes 4b.

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

When forming the reference mounting holes 4a (4a ₁ , 4a ₂ , 4a ₃ ) with different radial positions and the same circumferential position in each of the ranges Az, Bz, Cz, and Dz, the vertically movable plate portion 2 , it is necessary to increase the interval between the reference mounting holes 4a (4a ₁ , 4a ₂ , 4a ₃ ) adjacent to each other in the radial direction to some extent. In the present invention, since the reference mounting holes 4a and the other mounting holes 4b arranged in the respective ranges Az, Bz, Cz, and Dz are arranged so as to be displaced in the circumferential direction, the respective ranges Az, In Bz, Cz, and Dz, even if the radial distance between the reference mounting hole 4a and another mounting hole 4b is made smaller, the durable strength of the vertically movable plate portion 2 is less likely to decrease. In each of the ranges Az, Bz, Cz, and Dz, the positional deviation 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 vertically movable plate portion 2 is not significantly reduced locally due to these mounting holes 4a and 4b. As a result, in this vulcanizer 1, it is possible to easily attach a plurality of types of containers 11 having different sizes without specially reinforcing the vertically movable plate portion 2. - 特許庁

Even with one vulcanizer 1, it is possible to vulcanize the unvulcanized tire T using a plurality of types of containers 11 (molds 10) of different sizes. It becomes unnecessary to prepare a large number of vulcanizers 1 having different sizes correspondingly. This contributes to the reduction of equipment costs and the improvement of tire productivity.

In the embodiment illustrated in FIG. 3, separate mounting holes 4b are provided in each of the four equally divided ranges Az, Bz, Cz, and Dz at equal intervals (90° intervals) in the circumferential direction with respect to the annular center CL. are placed. Another mounting hole 4b can also be arranged in each of the ranges Az, Bz, Cz, and Dz as illustrated in FIG. In FIG. 9, between the opposing 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 with an interval 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 an interval 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 with an interval Y larger than 90° in the circumferential direction. Similarly, the other mounting holes 4b arranged in the ranges Dz and Az are arranged with an interval Y larger than 90° in the circumferential direction.

As illustrated in FIG. 10, each further mounting hole 4b can also be a radially extending slot. For example, the spacer 5 is fitted into the mounting hole 4b of the elongated hole, and the position of the mounting hole 4b of the elongated hole (the position where the mounting bolt 6 is inserted) is set to a position with a radius different from that of the reference mounting hole 4a. .

The mold 10 attached to the container 11 is not limited to the above-described sectional type, and is divided into two parts, which are composed of an upper mold 10d and a lower mold 10e arranged vertically opposite each other, as illustrated in FIG. There is also a type. A container 11C to which the split type mold 10 is attached has 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 and a lower plate 13A to which side segments 14b are attached.

Bolt holes 16b are formed in 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 mounted on the vertically movable plate portion 2 by mounting bolts 6 communicating with the respective reference mounting holes 4a (4a ₂ ) and bolt holes 16b. In this manner, the upper plate 12A is attached to the vertically movable plate portion 2 as a container-side member. Since another mounting hole 4b is also formed in the vertically moving plate portion 2, depending on the size of the container 11C, the other mounting hole 4b arranged in each of the ranges Az, Bz, Cz, and Dz and these mounting holes 4b may be used. In some cases, it is attached to the vertically movable plate portion 2 by means of attachment bolts 6 communicating with bolt holes 16b corresponding to the holes 4b.

1 vulcanizer 2 vertical movement plate 3 hydraulic cylinder 4a reference mounting hole 4b another mounting hole 5 spacer 6 mounting bolt 7 central mechanism 7a center post 8 vulcanizing bladder 9 clamp 10 tire vulcanizing mold 10a upper side mold 10b lower side mold 10c sector mold 10d upper mold 10e lower mold 11 (11A, 11B, 11C) tire vulcanizing 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 vulcanizing container having a central mechanism and a vertically moving plate portion that moves vertically above the central mechanism and to which a tire vulcanizing mold is attached is installed so as to surround the central mechanism and moves vertically. A container-side member that constitutes a part of the vulcanization container is attached to the plate portion, and a reference mounting hole for attaching the container-side member is the vertically movable plate at a position corresponding to the central mechanism in a plan view. are arranged at equal intervals in the circumferential direction at positions with the same radius with respect to the center position in each range divided equally in the circumferential direction around the center position of the part, and the vertically moving plate part moves vertically In a tire vulcanizer that opens and closes the tire vulcanizing mold by moving,
In each of the four equally-divided ranges of the vertically movable plate portion, there is provided a different radial position and a circumferential position shifted from the reference mounting hole, and the radial positions are the same as each other from the center position. A tire vulcanizer characterized in that mounting holes are arranged. 2. The tire vulcanizer according to claim 1, wherein said separate mounting holes are arranged at regular intervals in the circumferential direction. 3. A tire vulcanizer according to claim 1 or 2, wherein each of said further mounting holes is a radially extending slot. The tire vulcanizing mold is a sectional type composed of a plurality of sector molds that are assembled in an annular shape, and an upper side mold and a lower side mold that are arranged to sandwich the sector molds from above and below, and the container side. The tire vulcanizer according to any one of claims 1 to 3, wherein the member is a container ring. The tire vulcanizing mold is of a two-part type consisting of an upper mold and a lower mold arranged vertically facing 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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