JP2018058251A - Tire vulcanizing apparatus and tire vulcanization method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cycle time in a dry cycle.SOLUTION: An upper mold part 2U can move to an elevated position P2 in a state of holding a vulcanized tire T2 to form a space H between the vulcanized tire T2 and a lower mold part 2 L. An unloader 21 can move an upper space portion HU in the space H and can receive and carry out the vulcanized tire T2 from the upper mold portion 2U. A loader 20 can move a lower space portion HL and can feed a raw tire T1 into the lower mold part 2 L.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a tire vulcanizing apparatus and a tire vulcanizing method that can shorten the cycle time in a dry cycle.

  In a tire vulcanizing apparatus having a split type tire mold having upper and lower mold parts, a vulcanization cycle for vulcanizing a raw tire in the tire mold, a vulcanized tire is taken out from the tire mold, and then The dry cycle in which the raw tire for vulcanization is charged is alternately repeated.

And in the dry cycle,
a) 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, holding the upper bead portion of the vulcanized tire by an unloader, and taking out the vulcanized tire from the lower mold portion;
c) Using the space, a step of loading the next raw tire for vulcanization into the lower mold part by a loader is performed (for example, see Patent Document 1 below).

  However, in the conventional tire vulcanizing apparatus, it is necessary to take out the vulcanized tire by the unloader prior to the introduction of the raw tire by the loader, and these cannot be performed simultaneously. Therefore, there is a limit to shortening the cycle time in the dry cycle.

JP 2013-6335 A

  Therefore, the present invention is a tire vulcanizer capable of simultaneously proceeding with the introduction of a raw tire by a loader and the removal of a vulcanized tire by an unloader, and which can achieve a reduction in cycle time in a dry cycle, And providing a tire vulcanizing method.

The first invention of the present application is a tire vulcanizing apparatus,
A tire mold having a lower mold part and an upper mold part,
A lower table to which the lower mold part is attached;
The upper mold part is mounted so as to face the lower mold part vertically, and can be moved up and down between a lowered position where the upper and lower mold parts are closed and an elevated position where the upper and lower mold parts are opened. Upper table supported,
A loader for throwing raw tires into the tire mold,
And an unloader for removing the vulcanized tire from the tire mold,
In addition, the upper mold part moves to the raised position while holding the vulcanized tire, thereby providing a vertical space H between the vulcanized tire and the lower mold part. Can form:
The unloader can move the upper space part HU of the space H, and can receive and carry out vulcanized tires from the upper mold part,
The loader is characterized in that the lower space part HL of the space H can be moved and a raw tire can be put into the lower mold part.

In the tire vulcanizing apparatus according to the present invention, a pair of main tie rods that are vertically extending through the upper table and the lower table and that guide the upper table to be vertically movable,
And a pair of auxiliary tie rods whose upper ends are fixed to the upper table and whose lower ends engage with the lower table so as to be vertically separated from each other,
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 vulcanizing apparatus 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 through the lower side of the one auxiliary tie rod to the lower tire. It is preferable that the unloader is put into the mold part and the unloader receives the vulcanized tire from the upper mold part through the lower side of the other auxiliary tie rod and carries it out.

A second invention of the present application is a tire vulcanizing method for vulcanizing a tire using the tire vulcanizing apparatus of the first invention,
A vulcanization step of vulcanizing the raw tire in a closed mold state in which the upper and lower mold parts are closed;
After the vulcanization process, the upper mold part is moved to the raised position while holding the vulcanized tire so that the mold is opened, so that the vulcanized tire is placed between the lower mold part and the lower mold part. A mold opening step for forming a vertical space H in
In the mold open state, the unloader is moved in the upper space part HU of the space H, and a vulcanized tire is received from the upper mold part and carried out,
In the mold open state, the loader is moved in the space part HU on the lower side of the space H, and a charging process is performed for charging a raw tire into the lower mold part. .

  In the tire vulcanizing method according to the present invention, it is preferable that at least a part of the unloading process and the charging process proceed simultaneously.

In the tire vulcanizing method according to the present invention, a pair of main tie rods for guiding the upper table so as to be movable up and down, and a pair of upper ends fixed to the upper table and a lower end engaged with the lower table so as to be vertically separated. With auxiliary tie rods,
The main tie rods and auxiliary tie rods are alternately arranged in the circumferential direction around the tire mold.
In the unloading step, the loader passes under one auxiliary tie rod,
In the charging step, the unloader preferably passes under the other auxiliary tie rod.

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

  Accordingly, it is possible to simultaneously take out the vulcanized tire by the unloader and to put in the raw tire by the loader, and the cycle time in the dry cycle can be shortened.

1 is a perspective view conceptually showing one embodiment of a tire vulcanizing apparatus of the present invention. It is a top view which omits an upper side table and shows a tire vulcanizer. It is a perspective view which shows an example of a loader. It is a disassembled perspective view of a loader. It is a perspective view which shows an example of an unloader. It is sectional drawing which shows the up-and-down movement of an upper table. It is sectional drawing which shows the carrying-out process by an unloader, and the injection | throwing-in process by a loader. (A), (B) is sectional drawing which shows delivery to the unloader of the vulcanized tire in a carrying-out process.

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

  The tire mold 2 includes a lower mold part 2L that is attached to the lower table 3L, and an upper mold part 2U that is attached to the upper table 3U. The lower mold part 2L and the upper table 3U are arranged facing each other in the vertical direction, and the raw tire T1 is vulcanized and molded therebetween. The upper and lower mold parts 2U and 2L are not particularly defined, and those having a well-known structure can be used.

  As shown in FIG. 6, the lower mold part 2L of the present example includes a lower side mold 11L for molding the lower sidewall part and the lower bead part of the tire, and heating for supporting the lower side mold 11L. The lower platen plate 12L is included.

  The upper mold part 2U in this example includes an upper side mold 11U for forming the upper sidewall portion and the upper bead portion of the tire, a tread mold 13 for forming the tread portion of the tire, and an upper platen for heating. A plate 12U and a cylindrical container 14 for expanding and contracting the tread mold 13 are included.

  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, an upper side mold 11U and a 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. The Therefore, in the upper mold part 2U, the tread mold 13 can be expanded and contracted by the relative movement of each segment in the vertical direction with respect to the container 14.

  Reference numeral 15 in the figure denotes a central mechanism 15 having a bladder 15A for heating and pressurizing the raw tire T1 from the inside during vulcanization, and is attached to the lower table 3L concentrically with the tire mold 2.

  As shown in FIGS. 1 and 6, the tire vulcanizing apparatus 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 pillar shape extending vertically through the upper table 3U and the lower table 3L. The main tie rod 4 has a lowered position P1 where the upper and lower mold parts 2U, 2L are closed and the mold closed state Y1 and a raised position P2 where the upper and lower mold parts 2U, 2L are opened and become the mold open state Y2. The upper table 3U is guided so as to be movable up and down. The lower table 3L is a fixed table, and the lower end portion 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 lowered position P1 and the raised position P2. The upper table 3U is provided with a clamp 16 (shown in FIG. 6) having a known structure for clamping the locking groove 4g at the lowered position P1 and the raised position P2. The upper table 3U is driven in the vertical direction by a known elevator (not shown) such as a hydraulic cylinder supported by the lower table 3L.

  As shown in FIG. 2, the main tie rod 4 is disposed on the first mold diameter direction line X <b> 1 passing through the center j of the tire mold 2 and on both sides of the center j in plan view.

  As shown in FIGS. 1 and 6, the auxiliary tie rod 5 has an upper end fixed to the upper table 3U and a lower end engaged with the lower table 3L so as to be vertically separated. The lower end portion of the auxiliary tie rod 5 can be separated from the lower table 3L in the vertical direction as the upper table 3U rises from the lowered position P1.

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

  The main tie rods 4 and the auxiliary tie rods 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 has a second mold diameter direction perpendicular to the first mold diameter direction line X1 through the center j of the tire mold 2 in plan view. It is arranged on the line X2 and on both sides of the center j. In particular, it is preferable that the main tie rod 4 and the auxiliary tie rod 5 are arranged at positions equidistant from the center j.

  Thus, in the tire vulcanizing apparatus 1 of this example, the space between the upper table 3U and the lower table 3L can be tightened with a total of four tie rods 4 and 5 in a balanced manner. Therefore, a uniform pressure can be applied to the tire mold 2 during vulcanization while simplifying the structure.

  The tire vulcanizing apparatus 1 includes a loader 20 for putting 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 vulcanizing apparatus 1, after vulcanization molding, the upper mold part 2U moves to the raised position P2 while holding the vulcanized tire T2. Thus, a vertical space H is formed between the vulcanized tire T2 and the lower mold part 2L. The vulcanized tire T2 can be held by raising the upper mold part 2U while keeping the tread mold 13 in a reduced diameter state.

  And the unloader 21 moves the upper space part HU of the spaces H, receives the vulcanized tire T2 from the upper mold part 2U, and carries it out. At this time, the unloader 21 moves through the lower side of one auxiliary tie rod 5B. The loader 20 moves the lower space portion HL of the space H, and throws 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.

  By configuring in this way, at least a part of the unloading process of the vulcanized tire T2 by the unloader 21 and the charging process of the raw tire T1 by the loader 20 can proceed simultaneously, and the cycle time in the dry cycle Can be shortened.

  In this example, in order to effectively use the space H, the auxiliary tie rod 5 is supported so as to be lifted via a cylinder 22 (shown in FIG. 1) attached to the upper table 3U. Thereby, 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 part 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 carry-out, or to reduce the height of the space H.

  As shown in FIGS. 1 and 2, the loader 20 of the present example includes a chuck device 23 that holds the raw tire T <b> 1 in a horizontally placed posture, an elevating means 24 that supports the chuck device 23 so as to be movable up and down, and a chuck device in a plan view. And moving means 25 for moving 23 to the center j position of the tire mold 2.

  As shown in FIG. 3, the raising / lowering means 24 has the raising / lowering body 27 guided to the support | pillar 26 so that a vertical movement is possible via the linear guide containing the rail 26A, for example in this example. 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 turn 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.

  As shown in FIGS. 3 and 4, the chuck device 23 includes a ring-shaped substrate 32 fixed to the tip of the arm body 29 via, for example, a U-shaped bracket 31 in this example. A gripping portion 33 capable of expanding and contracting diameter that can grip the upper bead portion (shown in FIG. 7) of the raw tire T1 from, for example, the inside in the radial direction is supported on the substrate 32.

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

  The expansion / contraction diameter means 34 is provided on the lower surface of the substrate 32, for example, a guide portion 35 that guides each gripping piece 33A in the radial direction, and a ring-shaped rotation plate 36 that is concentrically and rotatably supported by the substrate 32. Including. The rotating plate 36 includes, for example, three support rollers 36A (shown in FIG. 3) on the outer peripheral portion thereof, and each support roller 36A is rotated on the outer peripheral surface of the substrate 32 so as to be rotatable. The plate 36 can rotate concentrically with respect to the substrate 32. The rotating plate 36 is formed with a plurality of spiral guide grooves 36B. Each gripping piece 33A is provided with a guide pin 33A1 that is guided by the guide groove 36B. Accordingly, the gripping pieces 33A can be moved inward and outward in the radial direction by the rotating operation of the rotating plate 36, and the upper bead portion can be gripped. 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 the present example includes a holding tool 40 that receives and holds the vulcanized tire T2 from the upper mold part 2U, and an elevating means 41 that supports the holding tool 40 so as to be movable up and down. And a moving means 42 for moving the holder 40 out of the apparatus from the center j position in plan view.

  In this example, the moving means 42 has a horizontal moving body 44 that is guided to a horizontal frame 43 that extends horizontally between the tire vulcanizers 1 and 1 via a linear guide including a rail 43A so as to be laterally movable. . The lifting / lowering means 41 includes a lifting / lowering body 45 that can move up and down via a linear guide including a rail 45 </ b> A 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 holder 47 that receives the lower bead portion of the vulcanized tire T2. The holding portion 47 includes a pair of holding pieces 47A that are divided into two semicircular shapes, and each holding piece 47A is supported by the support plate 46 through a linear guide including, for example, a rail 48 so as to be able to move close and away. . 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 through the upper space portion HU to the lower and concentric position of the upper mold portion 2U holding the vulcanized tire T2. Thereafter, as shown in FIG. 8B, the upper platen plate 12U is lowered, and the tread mold 13 is expanded in diameter, whereby the holding of the vulcanized tire T2 is released. At the same time, the holding tool 40 is raised, so that the vulcanized tire T2 is received from the upper mold part 2U. The vulcanized tire T2 is held by the holding tool 40 by separating the holding pieces 47A and 47A, and then is lowered to be removed from the upper mold part 2U and through the upper space part HU. It is carried outside.

  Next, a tire vulcanizing method using the tire vulcanizing apparatus 1 will be described. This tire vulcanization method includes a vulcanization step S1, a mold opening step S2, a carry-out step S3, and a charging 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 raised position P2 while holding the vulcanized tire T2, and the mold is opened. Let Y2. Thus, a vertical space H is formed between the vulcanized tire T2 and the lower mold part 2L.

  In the unloading step S3, in the mold open state Y2, the unloader 21 is moved in the upper space part HU, and the vulcanized tire T2 is received and unloaded from the upper mold part 2U.

  In the loading step S4, in the mold open state Y2, the loader 20 is moved in the lower space part HU, and the raw tire T1 is loaded into the lower mold part 2L.

  In this example, at least a part of the unloading step S3 and the charging step S4 proceeds simultaneously, and the cycle time in the dry cycle is shortened.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

DESCRIPTION OF SYMBOLS 1 Tire vulcanizer 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 descending position P2 Raising position S1 Vulcanizing process S2 Mold opening process S3 Unloading process S4 Input process T1 Raw tire T2 Vulcanized tire Y1 Mold closed state Y2 Mold open state

Claims (6)

A tire mold having a lower mold part and an upper mold part,
A lower table to which the lower mold part is attached;
The upper mold part is mounted so as to face the lower mold part vertically, and can be moved up and down between a lowered position where the upper and lower mold parts are closed and an elevated position where the upper and lower mold parts are opened. Upper table supported,
A loader for throwing raw tires into the tire mold,
And an unloader for removing the vulcanized tire from the tire mold,
In addition, the upper mold part moves to the raised position while holding the vulcanized tire, thereby providing a vertical space H between the vulcanized tire and the lower mold part. Can form:
The unloader can move the upper space part HU of the space H, and can receive and carry out vulcanized tires from the upper mold part,
The tire vulcanizer characterized in that the loader can move a lower space portion HL of the space H and can put a raw tire into the lower mold portion. A pair of main tie rods that are vertically extending through the upper table and the lower table and 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 engage with the lower table so as to be vertically separated from each other,
The tire vulcanizing apparatus according to claim 1, wherein the main tie rod and the auxiliary tie rod are alternately arranged in a 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 passes the lower side of one auxiliary tie rod and throws the raw tire into the lower mold part, and the unloader 3. The tire vulcanizing apparatus according to claim 2, wherein the vulcanized tire is received from the upper mold part through the lower side of the other auxiliary tie rod and carried out. A tire vulcanizing method for vulcanizing a tire using the tire vulcanizing device according to claim 1,
A vulcanization step of vulcanizing the raw tire in a closed mold state in which the upper and lower mold parts are closed;
After the vulcanization process, the upper mold part is moved to the raised position while holding the vulcanized tire so that the mold is opened, so that the vulcanized tire is placed between the lower mold part and the lower mold part. A mold opening step for forming a vertical space H in
In the mold open state, the unloader is moved in the upper space part HU of the space H, and a vulcanized tire is received from the upper mold part and carried out,
In the mold open state, the loader is moved in the lower space portion HU of the space H, and a loading step of loading a raw tire into the lower mold portion is provided. Tire vulcanization method.   The tire vulcanizing method according to claim 4, wherein at least a part of the unloading process and the charging process proceeds simultaneously. A pair of main tie rods for guiding the upper table so as to be movable up and down, and a pair of auxiliary tie rods whose upper ends are fixed to the upper table and whose lower ends engage with the lower table so as to be vertically separated from each other,
The main tie rods and auxiliary tie rods are alternately arranged in the circumferential direction around the tire mold.
In the unloading step, the loader passes under one auxiliary tie rod,
The tire vulcanizing method according to claim 4 or 5, wherein, in the charging step, the unloader passes below the other auxiliary tie rod.

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