JP6809104B2 - Tire vulcanizer and tire vulcanization method - Google Patents

Description

The present invention relates to a tire vulcanizer and a tire vulcanization method capable of shortening the cycle time in a dry cycle.

In a tire vulcanizer equipped with a split type tire mold having upper and lower mold parts, a vulcanization cycle for vulcanizing a raw tire in the tire mold and a vulcanized tire being taken out from the tire mold and then next. The dry cycle of putting in raw tires for vulcanization is repeated alternately.

And in the dry cycle, conventional
a) A process of raising the upper mold part while holding the vulcanized tire in the lower mold part, thereby securing a space above the vulcanized tire.
b) Using the space, the unloader grips the upper bead portion of the vulcanized tire, and the vulcanized tire is taken out from the lower mold portion and carried out.
c) Utilizing the space, a step of charging the next raw tire for vulcanization into the lower mold portion by a loader is performed (see, for example, Patent Document 1 below).

However, in the conventional tire vulcanizer, it is necessary to take out the vulcanized tire by the unloader prior to the loading of the raw tire by the loader, and these cannot be carried out at the same time. Therefore, there is a limit to shortening the cycle time in the dry cycle.

Japanese Unexamined Patent Publication No. 2013-6335

Therefore, according to the present invention, a tire vulcanizer capable of simultaneously loading raw tires by a loader and taking out vulcanized tires by an unloader, and can achieve a reduction in cycle time in a dry cycle. And the subject is to provide a tire vulcanization method.

The first invention of the present application is a tire vulcanizer.
A tire mold having a lower mold part and an upper mold part,
The lower table to which the lower mold part is attached,
The upper mold portion is attached to the lower mold portion vertically and vertically, and the upper and lower mold portions can be moved up and down between a lowering position where the upper and lower mold portions are closed and an ascending position where the upper and lower mold portions are opened. Supported upper table,
A loader for loading raw tires into the tire mold,
And an unloader that removes the vulcanized tire from the tire mold.
Moreover, the upper mold portion moves to the ascending position while holding the vulcanized tire, so that a space H in the vertical direction is created between the vulcanized tire and the lower mold portion. With the possibility of forming:
The unloader can move the upper space portion HU of the space H, and can receive and carry out the vulcanized tire from the upper mold portion.
The loader is characterized in that the lower space portion HL of the space H can be moved and the raw tire can be put into the lower mold portion.

In the tire vulcanizer according to the present invention, a pair of main tie rods that penetrate the upper table and the lower table to form a column that extends vertically and guide the upper table so as to be vertically movable.
And a pair of auxiliary tie rods whose upper end is fixed to the upper table and whose lower end engages with the lower table so as to be vertically separated.
It is preferable that the main tie rod and the auxiliary tie rod are alternately arranged in the circumferential direction around the tire mold.

In the tire vulcanizer according to the present invention, when the upper table is raised and the lower end of the auxiliary tie rod is separated from the lower table, the loader passes the raw tire under one of the auxiliary tie rods. It is preferable that the unloader receives the vulcanized tire from the upper mold portion and carries it out by passing under the other auxiliary tie rod after being charged into the mold portion.

The second invention of the present application is a tire vulcanization method for vulcanizing a tire using the tire vulcanizer of the first invention.
A vulcanization process that vulcanizes raw tires with the upper and lower molds closed.
After the vulcanization step, the upper mold portion is moved to the ascending position while holding the vulcanized tire to open the mold, thereby between the vulcanized tire and the lower mold portion. The mold opening process that forms the space H in the vertical direction and
In the mold open state, the unloader is moved by the upper space portion HU of the space H, and the vulcanized tire is received from the upper mold portion and carried out.
In the mold open state, the loader is moved by the lower space portion HU of the space H, and is characterized by including a loading step of loading the raw tire into the lower mold portion. ..

In the tire vulcanization method according to the present invention, it is preferable that at least a part of the unloading step and the loading step proceeds at the same time.

In the tire vulcanization method according to the present invention, a pair of main tie rods that guide the upper table so as to be movable up and down, and a pair that the upper end is fixed to the upper table and the lower end is engaged with the lower table so as to be vertically separated. With auxiliary tie rods
The main tie rod and the auxiliary tie rod are alternately arranged in the circumferential direction around the tire mold.
In the unloading process, the loader passes under one of the auxiliary tie rods.
In the loading step, it is preferable that the unloader passes below the other auxiliary tie rod.

In the tire vulcanizing apparatus of the present invention, the upper mold portion can be raised while holding the vulcanized tire, whereby a space H can be formed between the vulcanized tire and the lower mold portion. Then, the unloader can move the upper space portion HU of the space H, and the loader can move the lower space portion HL.

Therefore, it is possible to simultaneously take out the vulcanized tire by the unloader and put in the raw tire by the loader, and it is possible to shorten the cycle time in the dry cycle.

It is a perspective view which conceptually shows one Example of the tire vulcanization apparatus of this invention. It is a top view which shows the tire vulcanizer by omitting the upper table. It is a perspective view which shows an example of a loader. It is an exploded perspective view of a loader. It is a perspective view which shows an example of an unloader. It is sectional drawing which shows the vertical movement of the upper table. It is sectional drawing which shows the unloading process by an unloader, and the loading process by a loader. (A) and (B) are cross-sectional views showing delivery of the vulcanized tire to the unloader in the unloading process.

Hereinafter, embodiments of the present invention will be described in detail.
As shown in FIG. 1, the tire vulcanizer 1 of the present embodiment includes a tire mold 2, a lower table 3L, an upper table 3U, a loader 20, and an unloader 21. In this example, a case where two tire vulcanizers 1 are installed next to each other is shown, and the tire vulcanizers 1, 1 are configured to be line-symmetrical with each other.

The tire mold 2 has a lower mold portion 2L attached to the lower table 3L and an upper mold portion 2U attached to the upper table 3U. The lower mold portion 2L and the upper table 3U are arranged so as to face each other vertically, and the raw tire T1 is vulcanized and molded between them. The upper and lower mold portions 2U and 2L are not particularly specified, and those having a well-known structure can be used.

As shown in FIG. 6, the lower mold portion 2L of this example is a lower side mold 11L for molding the lower sidewall portion and the lower bead portion of the tire, and a heating portion for supporting the lower side mold 11L. Includes lower platen plate 12L.

The upper mold portion 2U of this example includes an upper side mold 11U for molding the upper sidewall portion and the upper bead portion of the tire, a tread mold 13 for molding the tread portion of the tire, and an upper platen for heating. Includes a plate 12U and a cylindrical container 14 for scaling the tread mold 13.

The upper platen plate 12U is supported so as to be vertically movable with respect to the upper table 3U via, for example, a cylinder (not shown) attached to the upper table 3U. Further, the upper side mold 11U and the tread mold 13 are attached to the upper platen plate 12U so as to be vertically movable integrally with the upper platen plate 12U. A container 14 is attached to the upper table 3U. The tread mold 13 is composed of a plurality of segments divided in the circumferential direction, and each segment is guided along the cone-shaped inner peripheral surface by a guide (not shown) provided on the cone-shaped inner peripheral surface of the container 14. To. Therefore, in the upper mold portion 2U, the diameter of the tread mold 13 can be expanded or contracted by the relative movement of each segment in the vertical direction with respect to the container 14.

Reference numeral 15 in the drawing is a central mechanism 15 having a bladder 15A that heats and pressurizes the raw tire T1 from the inside during vulcanization, and attaches to the lower table 3L concentrically with the tire mold 2.

As shown in FIGS. 1 and 6, the tire vulcanizer 1 of this example includes a pair of main tie rods 4 and a pair of auxiliary tie rods 5.

The main tie rod 4 has a support shape that extends vertically through the upper table 3U and the lower table 3L. The main tie rod 4 has a lowering position P1 in which the upper and lower mold portions 2U and 2L are closed to be in the mold closed state Y1, and an ascending position P2 in which the upper and lower mold portions 2U and 2L are opened to be in the mold open state Y2. The upper table 3U is guided up and down between the two. The lower table 3L is a fixed table, and the lower end of the main tie rod 4 is fixed to the lower table 3L.

The main tie rod 4 is provided with a locking groove 4g (shown in FIG. 6) for stopping the upper table 3U at at least the descending position P1 and the ascending position P2. Further, the upper table 3U is provided with a clamp tool 16 (shown in FIG. 6) having a well-known structure for clamping the locking groove 4g at the lowering position P1 and the ascending position P2. The upper table 3U is driven in the vertical direction by, for example, a well-known elevator (not shown) such as a hydraulic cylinder supported by the lower table 3L.

As shown in FIG. 2, the main tie rods 4 are arranged on the first mold diameter direction line X1 passing through the center j of the tire mold 2 and on both sides of the center j in a plan view.

As shown in FIGS. 1 and 6, the upper end portion of the auxiliary tie rod 5 is fixed to the upper table 3U, and the lower end portion engages with the lower table 3L so as to be vertically separable. The lower end of the auxiliary tie rod 5 may be separated from the lower table 3L in the vertical direction as the upper table 3U rises from the lowering position P1.

At the lower end of the auxiliary tie rod 5, a locking groove 5 g (shown in FIG. 6) for engaging with the lower table 3L is provided. Further, the lower table 3L is provided with a through hole through which the auxiliary tie rod 5 passes and a clamp tool 17 (shown in FIG. 6) which has substantially the same configuration as the clamp tool 16 and clamps the locking groove 5 g.

The main tie rod 4 and the auxiliary tie rod 5 are alternately arranged in the circumferential direction around the tire mold 2. In this example, as shown in FIG. 2, the auxiliary tie rod 5 passes through the center j of the tire mold 2 and is orthogonal to the first mold diameter direction line X1 in the second mold diameter direction in a plan view. It is arranged on the line X2 and on both sides of the center j. In particular, the main tie rod 4 and the auxiliary tie rod 5 are preferably arranged at positions equidistant from the center j.

As described above, in the tire vulcanizer 1 of this example, the upper table 3U and the lower table 3L can be tightened in a well-balanced manner by a total of four tie rods 4 and 5. Therefore, although the structure is simple, a uniform pressure can be applied to the tire mold 2 during vulcanization.

The tire vulcanizing apparatus 1 includes a loader 20 for charging the raw tire T1 into the tire mold 2 and an unloader 21 for taking out the vulcanized tire T2 from the tire mold 2.

As shown in FIG. 7, in the tire vulcanization apparatus 1, after vulcanization molding, the upper mold portion 2U moves to the ascending position P2 while holding the vulcanized tire T2. As a result, a space H in the vertical direction is formed between the vulcanized tire T2 and the lower mold portion 2L. The vulcanized tire T2 can be held by raising the upper mold portion 2U while keeping the diameter of the tread mold 13 reduced.

Then, the unloader 21 moves the upper space portion HU of the space H, receives the vulcanized tire T2 from the upper mold portion 2U, and carries it out. At this time, the movement of the unloader 21 is performed below the one auxiliary tie rod 5B. Further, the loader 20 moves the lower space portion HL of the space H and puts the raw tire T1 onto the lower mold portion 2L. At this time, the movement of the loader 20 is performed below the other auxiliary tie rod 5A. In FIG. 7, the main tie rod 4 is omitted for convenience.

With this configuration, at least a part of the vulcanized tire T2 unloading process by the unloader 21 and the raw tire T1 loading process by the loader 20 can be simultaneously advanced, and the cycle time in the dry cycle can be increased. Can be shortened.

In this example, in order to effectively utilize the space H, the auxiliary tie rod 5 is supported so as to be able to rise via a cylinder 22 (shown in FIG. 1) attached to the upper table 3U. As a result, the auxiliary tie rod 5 can be raised to the standby position K where the lower end portion of the auxiliary tie rod 5 is above the lower surface of the upper mold portion 2U. As a result, it is possible to prevent contact between the vulcanized tire T2 and the auxiliary tie rod 5 at the time of carrying out, or to reduce the height of the space H.

As shown in FIGS. 1 and 2, the loader 20 of this example includes a chuck tool 23 that grips the raw tire T1 in a horizontal position, an elevating means 24 that supports the chuck tool 23 so as to be able to move up and down, and a chuck tool in a plan view. A moving means 25 for moving the 23 to the center j position of the tire mold 2 is provided.

As shown in FIG. 3, in this example, the elevating means 24 has an elevating body 27 that is vertically movablely guided to, for example, a support column 26 via a linear guide including a rail 26A. The elevating body 27 is operated by, for example, a cylinder (not shown) attached to the support column 26.

In this example, the moving means 25 has an arm body 29 that can rotate horizontally around a support shaft 28 provided on the elevating body 27. The arm body 29 is operated by, for example, a cylinder 30 attached to the elevating body 27.

Further, as shown in FIGS. 3 and 4, in this example, the chuck tool 23 includes a ring-shaped substrate 32 fixed to the tip of the arm body 29 via, for example, a U-shaped bracket 31. The substrate 32 is supported by a grip portion 33 having a diameter capable of gripping the upper bead portion (shown in FIG. 7) of the raw tire T1 from the inside in the radial direction, for example.

The grip portion 33 has a plurality of grip pieces 33A divided in the circumferential direction, and each grip piece 33A moves in and out in the radial direction via the expansion / contraction diameter means 34.

The expansion / contraction means 34 is provided on, for example, the lower surface of the substrate 32, and has a guide portion 35 that guides each gripping piece 33A in the radial direction and a ring-shaped rotating plate 36 that is concentrically and rotatably supported by the substrate 32. And include. The rotary plate 36 is provided with, for example, three support rollers 36A (shown in FIG. 3) on the outer peripheral portion thereof, and each support roller 36A is rotatably locked on the outer peripheral surface of the substrate 32 to rotate. The plate 36 can rotate concentrically with respect to the substrate 32. Further, a plurality of spiral guide grooves 36B are formed in the rotating plate 36. A guide pin 33A1 guided by the guide groove 36B is projected from each gripping piece 33A. Therefore, by the rotational operation of the rotating plate 36, each gripping piece 33A can move in and out in the radial direction all at once, and can grip the upper bead portion. The rotating plate 36 is operated by, for example, a cylinder 37 (shown in FIG. 3) attached to the arm body 29.

As shown in FIG. 5, the unloader 21 of this example includes a holder 40 that receives and holds the vulcanized tire T2 from the upper mold portion 2U, and a lifting means 41 that supports the holder 40 so as to be liftable. A moving means 42 for moving the holder 40 from the center j position to the outside of the device in a plan view is provided.

In this example, the moving means 42 has a lateral moving body 44 that is horizontally guided by a linear guide including a rail 43A on a horizontal frame 43 extending horizontally between the tire vulcanizers 1 and 1. .. Further, the elevating means 41 includes an elevating body 45 that can move up and down via a linear guide including a rail 45A on the side surface of the laterally moving body 44.

The holder 40 includes a support plate 46 attached to the elevating body 45 and a holding portion 47 that receives a bead portion on the lower side of the vulcanized tire T2. The holding portion 47 is composed of a pair of holding pieces 47A divided into two in a semicircular shape, and each holding piece 47A is supported by a support plate 46 so as to be movable in close proximity via a linear guide including, for example, a rail 48. .. The holding piece 47A is operated by, for example, a cylinder (not shown) attached to the support plate 46.

Therefore, as shown in FIG. 8A, first, the holder 40 moves to the lower and concentric positions of the upper mold portion 2U holding the vulcanized tire T2 through the upper space portion HU. After that, as shown in FIG. 8B, the upper platen plate 12U is lowered and the diameter of the tread mold 13 is expanded, so that the holding of the vulcanized tire T2 is released. At the same time, as the holder 40 rises, the vulcanized tire T2 is received from the upper mold portion 2U. The vulcanized tire T2 is held by the holder 40 by separating the holding pieces 47A and 47A, and then lowered to be removed from the upper mold portion 2U and passed through the upper space portion HU. It is carried out.

Next, a tire vulcanization method using the tire vulcanization apparatus 1 will be described. This tire vulcanization method includes a vulcanization step S1, a mold opening step S2, a unloading step S3, and a loading step S4.

In the vulcanization step S1, as shown in FIG. 6, the raw tire T1 is vulcanized in the tire mold 2 in the mold closed state Y1.

In the mold opening step S2, as shown in FIG. 7, after the vulcanization step S1, the upper mold portion 2U is moved to the ascending position P2 while holding the vulcanized tire T2, and the mold is opened. Let it be Y2. As a result, a space H in the vertical direction is formed between the vulcanized tire T2 and the lower mold portion 2L.

In the carry-out step S3, in the mold open state Y2, the unloader 21 is moved by the upper space portion HU, and the vulcanized tire T2 is received and carried out from the upper mold portion 2U.

In the charging step S4, the loader 20 is moved by the lower space portion HU in the mold open state Y2, and the raw tire T1 is charged into the lower mold portion 2L.

Then, in this example, at least a part of the unloading step S3 and the loading step S4 proceed simultaneously, and the cycle time in the dry cycle can be shortened.

Although the particularly preferable embodiments of the present invention have been described in detail above, the present invention is not limited to the illustrated embodiments and can be modified into various embodiments.

1 Tire smelting device 2 Tire mold 2L Lower mold part 2U Upper mold part 3L Lower table 3U Upper table 4 Main tie rod 5 Auxiliary tie rod 20 Loader 21 Unloader P1 Lowering position P2 Ascending position S1 Sulfurization process S2 Mold opening process S3 Carrying out process S4 Loading process T1 Raw tire T2 Sulfurized tire Y1 Mold closed state Y2 Mold open state

Claims (6)

A tire mold having a lower mold part and an upper mold part,
The lower table to which the lower mold part is attached,
The upper mold portion is attached to the lower mold portion vertically and vertically, and the upper and lower mold portions can be moved up and down between a lowering position where the upper and lower mold portions are closed and an ascending position where the upper and lower mold portions are opened. Supported upper table,
A loader for loading raw tires into the tire mold,
And an unloader that removes the vulcanized tire from the tire mold.
Mold portion on said pressurized by moving to the raised position in vulcanized state tires and held, vertical space between the mold portion of the lower and the vulcanized tire facing vertically Form H ,
The unloader can move the upper space portion HU of the space H, and can receive and carry out the vulcanized tire from the upper mold portion.
The loader can move the lower space portion HL of the space H, and can put the raw tire into the lower mold portion .
The vertical space H is a tire vulcanizer having a size such that the unloader and the loader can move into the space H at the same time .
A tire mold having a lower mold part and an upper mold part,
The lower table to which the lower mold part is attached,
The upper mold portion is attached to the lower mold portion vertically and vertically, and the upper and lower mold portions can be moved up and down between a lowering position where the upper and lower mold portions are closed and an ascending position where the upper and lower mold portions are opened. Supported upper table,
A loader for loading raw tires into the tire mold,
And an unloader that removes the vulcanized tire from the tire mold.
The upper mold portion moves to the ascending position while holding the vulcanized tire, thereby forming a space H in the vertical direction between the vulcanized tire and the lower mold portion. ,
The unloader can move the upper space portion HU of the space H, and can receive and carry out the vulcanized tire from the upper mold portion.
The loader can move the lower space portion HL of the space H, and can put the raw tire into the lower mold portion.
A pair of main tie rods that form a support column that extends vertically through the upper table and the lower table and guide the upper table so that it can move up and down.
And a pair of auxiliary tie rods whose upper end is fixed to the upper table and whose lower end engages with the lower table so as to be vertically separated.
The main tie rods and auxiliary tie rod, the tire vulcanizing apparatus characterized by being arranged alternately in the circumferential direction around the tire mold.
When the upper table is raised and the lower end of the auxiliary tie rod is separated from the lower table, the loader throws the raw tire into the lower mold portion through below one of the auxiliary tie rods, and the unloader. The tire vulcanizing apparatus according to claim 2, wherein the vulcanized tire is received from the upper mold portion and carried out by passing under the other auxiliary tie rod. A tire vulcanization method for vulcanizing a tire using the tire vulcanizer according to any one of claims 1 to 3.
A vulcanization process that vulcanizes raw tires with the upper and lower molds closed.
After the vulcanization step, the upper mold portion is moved to the ascending position while holding the vulcanized tire to open the mold, thereby between the vulcanized tire and the lower mold portion. The mold opening process that forms the space H in the vertical direction and
In the mold open state, the unloader is moved by the upper space portion HU of the space H, and the vulcanized tire is received from the upper mold portion and carried out.
In the mold open state, the loader is moved by the space portion HU on the lower side of the space H, and the raw tire is charged into the lower mold portion. Tire vulcanization method. The tire vulcanization method according to claim 4, wherein at least a part of the unloading step and the loading step proceed at the same time. It is provided with a pair of main tie rods that guide the upper table so as to be vertically movable, and a pair of auxiliary tie rods whose upper ends are fixed to the upper table and whose lower ends are vertically separably engaged with the lower table.
The main tie rod and the auxiliary tie rod are alternately arranged in the circumferential direction around the tire mold , and
In the unloading process, the unloader passes under one of the auxiliary tie rods.
The tire vulcanization method according to claim 4 or 5, wherein in the charging step, the loader passes under the other auxiliary tie rod.

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