JP3064156B2 - Tire curing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vulcanizing apparatus for a tire mounted on an automobile or the like.

[0002]

2. Description of the Related Art At the time of vulcanizing a tire, the mold is used to open the mold by the pressure of a high-temperature and high-pressure heating / pressurizing medium (steam, steam + inert gas or hot water) introduced into the tire. A tire vulcanizing press which eliminates the necessity of, for example, tightening the mold from outside the mold so that the mold is not opened during vulcanization by offsetting inside has already been proposed by the present application (if necessary, a special vulcanizing press). See Japanese Patent Application No. 04-011121).

[0003]

In the tire vulcanizing press, the time for carrying in and shaping a raw tire and removing the vulcanized tire is determined by a vulcanization reaction time (the time when the tire is closed with the mold closed). Vulcanization reaction time in which a heating / pressurizing medium is introduced into the mold), and the operation rate of the mold opening / closing device and the tire loading / unloading device is poor.

[0004] In order to improve the operating rates of these mold opening / closing devices and tire loading / unloading devices, it is conceivable to take measures such as running the mold opening / closing device across another mold for opening / closing the next mold. However, in the mold opening / closing device traveling system, a waiting time is required at the time of mold replacement work due to a change in vulcanized tire specifications, and the mold opening / closing device is straddled with another mold for the next mold opening / closing. Since it is run, there is a problem that the mold changing operation involves danger, and it has not been put to practical use.

The present invention has been made in view of the above problems, and has as its object the purpose of the present invention is to provide a waiting time and a mold opening / closing device which occur during a mold changing operation due to a change in vulcanized tire specifications. Another object of the present invention is to provide a tire vulcanizing apparatus that can eliminate the danger caused by traveling over a vehicle.

[0006]

In order to achieve the above object, a tire vulcanizing apparatus according to the present invention opens and closes a mold at a first position where a raw tire is loaded, shaped, and a vulcanized tire is removed. And a plurality of second positions for vulcanizing the tire are arranged around the first position, and a plurality of dies are connected to the first position and the second positions. It is installed movably between

[0007]

The tire vulcanizing apparatus of the present invention is constructed as described above, and one mold is located at the second position. When the vulcanization is completed there, the mold is moved from the second position to the first position. Move,
It is connected to the mold opening and closing device at the first position, the mold opening and closing device is operated, the mold is opened, and the vulcanized tire is carried out of the machine. Next, the raw tire is carried into the same mold, a shaping gas is introduced into the raw tire while closing the same mold, the raw tire is shaped, and after the same mold is closed, heating is performed into the raw tire. The pressurized medium is introduced to start the vulcanization reaction, the connection with the mold opening / closing device is released, and the mold is moved from the first position to the second position.
Move to position to continue vulcanization reaction. In this state, the other mold after the vulcanization reaction is moved from the second position to the first position, and the loading, shaping, and removal of the vulcanized tire are performed in the same manner as described above. Then, each mold is sequentially moved between the second position and the first position, and the above operation is continued.

[0008]

Next, a tire vulcanizing apparatus according to the present invention will be described with reference to an embodiment shown in FIGS. XX line and Y- line in FIG.
The intersection O of the Y line is the first position where the raw tire is loaded, shaped, and the vulcanized tire is removed, and a die opening / closing device described later is installed here. Further, the points CA and CC on the line XX and the point CB on the line YY are set to the second position where the standby and vulcanization reaction are performed, and three sets of molds MA, MB and MC are set to the first position and the respective first positions. It is installed movably between two positions. However, in FIG. 1, the mold MB is at the first position O, and
Is connected to the mold opening / closing device.

Reference numeral 2A denotes a truck on which the mold MA is fixed, and a rail 3A along the line XX on the common frame 1 for moving the truck 2A between the first position O and the second position CA. Has been laid. Reference numeral 2B denotes a truck to which the mold MB is fixed, and a rail 3B is laid along the YY line on the common frame 1 to move the truck 2B from the first position O to the second position CB.

Reference numeral 2C denotes a truck to which the mold MC is fixed, and a rail 3C is laid along the line XX on the common frame 1 to move the truck 2C from the first position O to the second position CC. ing. Reference numeral 4B in FIG. 2 denotes wheels mounted on the lower part of the truck 2B, and the wheels 4B roll on the rails 3B. Although the carts 2A and 2C have similar wheels, they are not shown.

The carriages 2A to 2C are moved between the first position and the second position by driving means (not shown) such as hydraulic cylinders. In this embodiment, three molds M
A, MB, and MC, but, for example, another second position CD is provided on a YY line passing through the first position O, so that four sets of molds MA, MB, MC, and MD can be moved. May be installed.

FIG. 3 shows a mold M (molds MA, M having the same configuration).
B, MC). 5 is a mold opening / closing device, 1
1 is a heat insulating plate, 12 is a lower disk fixed to the carriage 2 via the heat insulating plate 11, and on the upper surface of the lower disk 12, a lower heat plate 14 having a flange 14a on the outer periphery and a pressure receiving plate 13 are provided. The lower side wall type Md is bolted on the upper surface of the lower heating plate 14, and the bladder B is operated on the inner peripheral portion of the lower heating plate 14, and a heating / pressurizing medium or the like is placed in the bladder B. An outer cylinder 26 of the lower central mechanism 25 for supplying and discharging is suspended. Me is a lower bead ring fixed to the lower center mechanism 25.

Reference numeral Mc denotes a plurality of tread types divided into a plurality in the circumferential direction. Reference numeral 15 denotes a plurality of segments obtained by bolting the respective tread types Mc. Each of the segments 15 extends from a flange 22 a provided on the outer peripheral portion of the upper heating plate 22. A radially extending guide 22b suspends and is supported so as to be movable in the radial direction. On the lower surface of the upper heat plate 22, an upper side wall type Mb is bolted, inside the upper side wall type Mb, an upper bead ring Ma is bolted, and inside the upper side bead ring Ma, The pressure receiving plate 23 is bolted.

Reference numeral 20 denotes an upper disk, and an outer ring (an outer ring having a steam passage therein) 16 is bolted to a lower surface of an outer peripheral portion of the disk 20 via a spacer 19. Reference numeral 17 denotes a T-shaped member fixed to the outer inclined surface of the segment 15, and the T-shaped member 17 is slidably engaged with a vertically extending T-shaped groove provided on the inner inclined surface of the outer ring 16. When the upper disk 20 moves up and down with respect to the upper heating plate 22, the tread type Mc slides in the radial direction together with the segment 15, and the lower surface of the segment 15 and the pressure receiving plate 13
When the segment 15 moves inward in the radial direction by sliding with the upper surface of each of the molds Mb, Mc, and Md,
Form a tire mold. At this time, the claws 15 a and 15 b provided at the upper and lower ends of the segment 15 are engaged with the flange 14 a of the lower hot plate 14 and the flange 22 a of the upper hot plate 22. Reference numerals 18 and 21 are heat insulating materials.

1 and 2, reference numeral 1a denotes a support fixed to the common frame 1, reference numeral 6 denotes a rail fixed to the support 1a, reference numeral 7 denotes a linear motion bearing which moves up and down along the rail 6, and reference numeral 51 in FIGS. Is a lifting frame of the mold opening / closing device 5, and the linear motion bearing 7 is fixed to the lifting frame 51, and the piston rod 5 of the lifting cylinder 50 fixed to the upper end of the support 1a.
0a is connected to an elevating frame 51, and the elevating cylinder 50 is actuated in a telescopic direction, thereby causing the elevating frame 5 to move.
1 is raised and lowered.

4 and 5, reference numeral 53 denotes a bush fixed to a plurality of portions of the elevating frame 51; 52, a plurality of T rods inserted into each of the bushes 53; 52b, a male screw provided on each of the T rods 52; A flange having a female screw 54a screwed into the male screw 52b, and the flange 54 is a bolt 5
5 is fixed to the lifting frame 51. Reference numeral 56 denotes a chain wheel mounted on the upper portion of each of the T rods 52 via a detent key 57.
6 are connected via a chain. 57 is the T
A lever 60 is attached to the upper end of one of the T-rods 52 via a key 58 for stopping rotation. Reference numeral 60 denotes a piston rod of a clamp cylinder swingably attached to the elevating frame 51. The T-rod 52 is pivotally supported at the distal end of the lever 57, operates the clamp cylinder in the direction of expansion and contraction, and swings one T-rod 52 through the lever 57. This swinging rotation is performed between the chain wheel 56 and the chain. The other T-rods 52 are transmitted to the other T-rods 52 so as to synchronously swing and rotate.

FIGS. 4 to 6 show the T rods 52a.
A T-shaped portion provided at the lower end of the T-shaped portion, a plurality of oblong holes through which the T-shaped portion 52a can pass, and a plurality of circular grooves 20b provided at a lower portion of the disk 20 are provided. Character part 52a
Is pivotally rotated between the position shown in FIG. 5 and the position shown in FIG. 2 and 3, reference numeral 51a denotes a flange of the lifting frame 51, 61 denotes a segment opening / closing cylinder bolted to the flange 51a, 61a denotes a piston rod of the segment opening / closing cylinder 61, and 62 denotes a piston rod 61 of the same.
A ring 24 fixed to the lower end of the mold M.
Flange 24 bolted to 2;
, A projection claw provided at the upper end of the coaxial 24a; 63, a connecting ring for detachably connecting the flange 24 and the piston rod 61a of the segment opening / closing cylinder 61; A plurality of claws 64 fixed within the lower end of the connecting ring 63 are levers fixed to the connecting ring 63, and the outer end of the lever 63a is connected to a piston rod of a connecting cylinder (not shown). The flange 24 and the piston rod 61a of the segment opening / closing cylinder 61 are moved by engaging the convex claw 24b with the claw 63a or allowing the convex claw 24b to pass through the claw 63a depending on the swing rotation angle of the 63. It is designed to be detachably connected.

Next, the operation of the tire vulcanizing apparatus shown in FIGS. 1 to 6 will be specifically described. Now, the vulcanization reaction of the mold MB is completed, the mold MB moves from the second position CB to the first position O (see FIG. 1), and the mold opening / closing device 5 is lowered and moved up and down by the T rod 52. The frame 51 and the upper disk 20 are connected,
The piston rod 61a of the cylinder 61 is connected by the connecting ring 63.
When the and the flange 24 are connected, the heating / pressurizing medium in the bladder B is removed.

Next, the cylinder 61 is operated, the piston rod 61a, the connecting ring 63 and the shaft 24a are lowered, and the flange 24 is pressed downward. Further, the cylinder 50 is operated, the piston rod 50a is raised, and the upper disc 20 is moved.
And the outer ring 16 rises with respect to the upper heating plate 22,
The segment 15 moves radially outward. Cylinder 5
When the piston rod 50a further rises and the cylinder 61 reaches the stroke end, the upper heating plate 22, the upper side wall type Mb, the segment 15, and the tread type Mc are connected to the upper disk 20 and the outer disk. It rises with the ring 16, the mold MB opens, and the vulcanized tire T is exposed.

When the mold MB is completely opened, the bladder B is housed in the housing cylinder of the lower center mechanism 25, and the vulcanized tire T is carried out of the machine by an unloader (not shown). Next, the green tire T to be vulcanized next is suspended in the mold MB by the loader (not shown), the bladder B is inserted into the green tire T, and the shaping gas is introduced into the bladder B. Then, the cylinder 50 operates in the reverse direction, the piston rod 50a descends, and the mold MB is closed.

When the mold MB is closed and shaping of the bladder B is completed, a heating / pressurizing medium is introduced into the bladder B, and a vulcanization reaction is started. When the vulcanization reaction starts, T
The rod 52 and the connection ring 63 rotate, the connection is released, and the mold opening / closing device 5 moves up again. Next, the closed mold MB moves from the first position O to the second position CB. At this time, the force for opening each mold by the heating / pressurizing medium introduced into the bladder B, that is, the tire T, that is, the force for separating the upper and lower sidewall molds Mb and Md. Works, but this force is applied to the outer peripheral flanges 22a, 14a of the upper and lower hot plates 22, 14, and the claws 15a,
15b are offset by the engagement with the outer ring 16b.
, The mold MB is not opened, and the vulcanization reaction is continued.

When the vulcanization reaction of the tire T is completed in the mold MA (or the mold MC), the mold is moved from the second position CA (or the second position CC) to the first position O, and the mold opening / closing device 5 is moved. As a result, the mold MA (or the mold MC) is opened and closed.

[0023]

According to the tire vulcanizing apparatus of the present invention, as described above, one mold is at the second position, and when vulcanization is completed there, the mold is moved from the second position to the first position, Connected to the mold opening and closing device in the first position, actuating the same mold opening and closing device,
Open the mold and take the vulcanized tire out of the machine. Next, the raw tire is carried into the same mold, a shaping gas is introduced into the raw tire while closing the same mold, the raw tire is shaped, and after the same mold is closed, heating is performed into the raw tire. The vulcanization reaction is started by introducing the pressurized medium, the connection with the mold opening / closing device is released, and the mold is moved from the first position to the second position to continue the vulcanization reaction. In this state, the other mold after the vulcanization reaction is moved from the second position to the first position, and the loading, shaping, and removal of the vulcanized tire are performed in the same manner as described above. Since each mold is successively moved between the second position and the first position and the above-mentioned operation is continued, the waiting time and the mold generated during the mold changing operation due to the change of the vulcanized tire specification are changed. The danger caused by the opening and closing device traveling over the mold can be eliminated.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of a tire vulcanizing apparatus of the present invention.

FIG. 2 is a side view taken along the line aa in FIG. 1;

FIG. 3 is a side view taken along the line bb in FIG. 1;

FIG. 4 is a side view taken along the line cc of FIG. 1;

FIG. 5 is a plan view showing the relationship between the T-rod and the upper disk along the line dd in FIG. 4;

FIG. 6 is a plan view showing the relationship between the T-rod and the upper disk along the line dd in FIG. 4;

[Explanation of symbols]

 Reference Signs List 1 common frame 2 mold carriage 5 mold opening / closing device 14 lower heating plate 15 segment 16 outer ring 20 upper disk 22 heating plate 50 elevating cylinder 51 elevating frame 52 T rod 61 segment opening / closing cylinder 63 connecting ring O first position CA, CB, CC 2nd position MA, MB, MC Mold Mb Upper sidewall type Mc Tread type Md Lower sidewall type B Bladder T Tire

Claims (1)

(57) [Claims] 1. A mold opening / closing device for opening and closing a mold is installed at a first position for carrying in and shaping a raw tire and removing a vulcanized tire, and a plurality of second positions for vulcanizing the tire are provided. While placing around the first position,
A tire vulcanizing device, wherein a plurality of molds are movably installed between the first position and each of the second positions.