JP2703170B2 - Tire vulcanizing 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 facility for pneumatic tires mounted on automobiles and the like.

[0002]

2. Description of the Related Art The applicant of the present invention discloses a high-temperature and high-pressure heating and pressurizing medium (steam, steam +
(Inert gas or hot water) pressure cancels the force to open the mold inside the mold, and tightens the mold from outside the mold to prevent the mold from opening during vulcanization. Already proposed technology that is not required (if required, Japanese Patent Application No. 04
See -11121. )

[0003]

In a conventional fully automatic tire vulcanizing press, the unvulcanized reaction time is longer than the vulcanization reaction time performed by introducing a heating and pressurizing medium into the tire with the mold closed. The time required for carrying in and shaping of tires and removing the vulcanized tire is very short, and therefore, a mold opening / closing device or a tire carrying in / out device for opening and closing a mold for carrying in / out of tires. Operation rate is poor.

In order to improve the operation rate, various improvement measures have been proposed, such as running a mold opening / closing device across a plurality of dies, but the dies caused by the pressure of the heating and pressurizing medium have been proposed. Measures to prevent the mold from opening against the force to open it are more expensive, and in the case of the mold opening / closing device traveling type, when changing molds due to changes in vulcanized tire specifications, etc. However, there is a problem that it involves a waiting time and involves a risk, so that it has not been put to practical use.

The present invention has been made in view of the above problems, and its object is to improve the operation rate and productivity. It is another object of the present invention to provide a tire vulcanizing facility that can increase the number of mold surfaces of a treated tire and save installation space.

[0006]

In order to achieve the above object, a tire vulcanizing apparatus of the present invention comprises a vulcanization station for arranging a plurality of sets of tire dies for vulcanization, and opening the tire dies. Take out the vulcanized tire, then insert the unvulcanized tire to be vulcanized, shape and close the tire mold, and between the vulcanization station and the mold opening and closing station It is characterized in that it comprises a mold carrier cart for carrying the tire mold.

Further, the tire vulcanizing equipment of the present invention comprises a vulcanizing station for arranging a plurality of sets of tire dies for vulcanization, a vulcanized tire being taken out by opening the tire dies, and then vulcanizing. A mold opening / closing station for inserting and shaping an unvulcanized tire and closing the tire mold, a mold changing station for changing tire molds and exchanging bladders, and transporting tire molds between these It is characterized by being composed of a mold transporting trolley.

[0008] The present invention is also characterized in that in the tire vulcanizing equipment, the mold carrier has a structure in which a tire mold can be mounted in two areas. Further, the present invention provides the tire vulcanization facility, wherein the vulcanization station includes:
It is characterized in that the tire mold during the vulcanization can be arranged at least up and down two steps.

[0009]

The tire vulcanizing equipment of the present invention is configured as described above, and performs the following operations. (1) The vulcanized tire mold is received from a vulcanization station in which a plurality of tire molds being vulcanized are arranged by a mold carrier and transported to a mold opening / closing station. After joining the tire mold carried into the mold opening and closing station to the mold opening and closing device, the mold is opened by the action of the mold opening and closing device,
The vulcanized tire is unloaded by the unloader attached to the mold opening / closing device, and the tire mold that unloads the vulcanized tire includes:
The unvulcanized tire to be vulcanized next is carried in by the attached loader, the tire is shaped during the tire mold closing process, and after the tire mold is closed, the heating and pressurizing medium is introduced into the tire. And put into the tire vulcanizing process. Then, the connection between the mold that has started vulcanization and the mold opening / closing device is released, and the mold is again put on the mold carrier, transported, and returned to the vulcanization station. (2) If the mold needs to be replaced or the bladder needs to be replaced due to a change in the specification of the vulcanized tire, after the vulcanized tire is unloaded in the above procedure, no unvulcanized tire is loaded. The mold is closed, and the mold is transported to the mold changing station by the mold carrier. If the mold changing station has a mold opening / closing device (excluding the heating and pressurizing medium introduction equipment), the mold or bladder can be replaced at the mold changing station, and the mold opening / closing device must be provided. For example, it is transported to another place by another means, and the mold or the bladder is replaced.
During this time, in the mold opening / closing station, a tire of another tire mold is carried in and out. When the replacement of the bladder or the like is completed, the tire mold is transported to the mold opening / closing station by the mold carrier, and then the unvulcanized tire to be vulcanized is carried in and sent to the vulcanization station. (3) The above is the case where the mold carrier allows one tire mold to be loaded, and while the tire is being carried in and out of the tire mold, the mold carrier has a mold opening / closing station. Must wait in front of the mold and the operation of the mold opening / closing station and the truck will be restrained. If the mold carrier truck can load two tire molds, this restraint will be eased. To enable efficient operation. That is, the vulcanized N-th tire mold is loaded on one loading place, and the truck is moved so that the empty loading place comes in front of the mold opening / closing station. Receive the (N-1) th tire mold for which the loading / unloading of tires has been completed. Next, the Nth vulcanized tire mold is moved again so that the Nth vulcanized tire mold previously loaded is located in front of the mold opening / closing station, and the Nth vulcanized tire mold is molded. After being supplied to the opening / closing station, the loaded (N-1) th tire mold is transported to the vulcanizing station. Then, while loading and unloading the tires at the mold opening / closing station, the finished tire mold is transported to the vulcanization station, and the vulcanized tire mold is transported from the vulcanization station. Work can be performed, and the mold opening / closing station can be used more effectively. (4) The vulcanization station is capable of arranging tire dies during vulcanization in at least two stages, and it is possible to arrange the vulcanization station on one side of the mold carrier truck path,
The space occupied by the equipment can be saved.

[0010]

EXAMPLES Next, the tire vulcanizing equipment of the present invention will be described with reference to examples. FIG. 1 is a plan view showing a first embodiment of the present tire vulcanizing facility, FIG. 2 is a longitudinal sectional front view taken along the line aa of FIG. 1, and FIG. FIG. 4 is a longitudinal sectional front view taken along the line a ″ -a ″ in FIG. 3; FIG. 5 is a longitudinal sectional front view taken along the line a′-a ′ in FIG. 2; 6 is a vertical sectional side view along the line ee in FIG. 5, FIG. 7 is a cross-sectional plan view showing one example of the upper hot plate attaching / detaching means along the line ff in FIG. 6, and FIG. FIG. 9 is a cross-sectional plan view showing the connected state of the upper hot plate attaching / detaching means along the line ff in FIG.
9 is a cross-sectional plan view taken along the line hh in FIG. 9, and FIG. 11 is a cross-sectional plan view taken along the line ii in FIG. 9. is there.

First, an entire first embodiment of the tire vulcanizing equipment will be described with reference to FIGS. Vulcanizing station 1 (1
a and 1b) are composed of a plurality of mold stands 5 (5a, 5b, 5c,...) on which a plurality of tire molds M (Ma, Mb, Mc,. Each mold base 5 is provided with a mold moving means (for example, a cylinder-driven pusher) not shown, a heating / pressurizing medium replenishing means, a pipe, and the like as required. Mold opening and closing station 2
(2a and 2b) are a mold opening / closing device 6 (6a and 6b) similar to a known tire vulcanizer (the difference will be described later), and a known unloader 7a that unloads a vulcanized tire from a tire mold.
And a known loader 8a for loading an unvulcanized tire into a tire mold. If necessary, a conveyor 9a for transporting a vulcanized tire, a rack 10a for an unvulcanized tire, and the like are provided.

The mold carrier has a rail 4 fixed to the floor, and a known carriage 3 (3a and 3b) guided by the rail 4 and running by the action of driving means (not shown). The exchanging station is a mold exchanging table 11 for exchanging a tread mold, a sidewall mold, etc. in a tire mold in accordance with a change in specifications of a vulcanized tire, and exchanging a consumable bladder. It has a mold opening and closing procedure necessary for replacement work. In addition, you may attach a tire mold preheating room as needed. Alternatively, the mold exchanging table 11 may be simply a temporary mounting table for the tire mold or a preheating chamber for the tire mold, and the tire mold may be transported to another place by a forklift or the like so that parts in the mold are exchanged. .

Next, the mold M will be described in detail with reference to FIGS. In addition, the left side from the arrow dd line of FIG. 5 shows a state after the tire mold M is opened and the vulcanized tire is carried out, and the right side is where the unvulcanized tire T is carried in. This shows a state in which the tire mold is closed, the heating and pressurizing medium is introduced into the tire T via the bladder B, and vulcanization is started.

Reference numeral 101 denotes a substrate of the tire mold M.
01 is a ball cast 1 buried under the substrate 101
It is mounted on the frame 6e of the mold opening / closing device 6a via water 02 so as to be freely slidable, and is fixed to the frame 6e by a known locking device (not shown). Further, the lower heating plate 103 is fixed to a bush 108 which is slidably moved up and down by using the outer peripheral surface of a cylinder 101a formed in the center of the substrate 101 as a guide, and the rod of the cylinder 6f fixed to the frame 6e is Hole 101 provided in 101
e, the lower heat plate 103 ascends and descends.

Reference numeral 105 denotes a lower sidewall type bolted to the lower heat plate 103, and reference numeral 106 denotes a lower bead ring assembled to a bush 108 by a known bayonet lock mechanism, and a bladder presser bolted to the lower bead ring 106. The lower end of bladder B is sandwiched between 107 and lower bead ring 106. Reference numeral 109 denotes a tread type divided into a plurality in the circumferential direction, and when closed, the tread type 109 is bolted to the inner peripheral surface of the plurality of segments 110 whose outer peripheral surface forms a practical conical surface. Outer ring 1 having a conical surface which engages with the outer peripheral surface of segment 110 on the circumference
11 is bolted to the substrate 101 via a spacer 112. A slidable T-rod 111a is fixed to the circumferential conical surface of the outer ring 111 by engaging with a T-groove 110a formed in the vertical direction on the conical outer peripheral surface of the segment 110, and is actuated by the cylinder 6f. When the lower hot plate 103 is raised, the segment 110 is pushed up via the pressure receiving plate 104 fixed to the lower hot plate 103, and is slid radially outward by being guided by the T-bar 111a, The claw 10 formed on the outer periphery of the lower hot plate 103 which was engaged at the time of closing while the tread mold 109 was relatively radially separated from the lower sidewall mold 105.
Claw 11 formed below segment 110 for 3a
Ob is relatively displaced radially outward to disengage.

The upper heating plate 11 to which the pressure receiving plate 115 is fixed
4 is on the segment 110 via the pressure receiving plate 115 when the tire mold M is closed, and the claw 114 a formed on the upper heating plate 114 and the claw 11 formed on the upper portion of the segment 110.
0c is engaged or disengaged by the sliding of the segment 110 in the radial direction. Reference numeral 113 denotes an upper sidewall type bolted to the upper heating plate 114, and 1
An upper bead ring 16 is bolted to the upper sidewall type 113.

The tip of the rod of a cylinder 6d fixed to the frame 6e is fixed to the arm 6c which is assembled to the frame 6a so as to be able to move up and down. The arm 6c moves up and down by the operation of the cylinder 6d. In addition, the upper heating plate 114
Known detachable means 6 for detachably attaching to the arm 6c
k, ie, a T-shaped claw 125a at the tip
A rotary cylinder 124 is fixed to the other end of the rod 125, and by the operation of the rotary cylinder 124,
The T rod 125 reciprocally rotates 90 degrees, and a means that can be engaged or allowed to pass through the claw 114b integrated with the upper heating plate 114 is attached to the arm 6c. 6c and the upper heating plate 114, and the segment 110 moves outward in the radial direction.
While the engagement between the cylinder 6 and 114a is released, the cylinder 6
When d operates, the upper sidewall mold 113 and the upper bead ring 116 move up and down together with the upper heating plate 114.

A second center post 121 is inserted into the upper end of the cylindrical portion 101a of the substrate 101 so as to be slidable up and down with the inner peripheral surface of the bush 120 bolted as a guide. The first center post 123 is inserted into the upper end of the second center post 121 so as to be slidable up and down with the inner peripheral surface of the bush 122 bolted as a guide, and the center post elevating cylinder fixed to the frame 6e. An extension rod 6j screwed to the tip of a rod (not shown) and a claw 6i formed at an upper end of a cylinder 6b rotatably mounted to the extension rod 6j and a lower end of the first center post 123. The first center post 123 moves up and down through the engagement with the claw 123c.

The first center post 123 rises, and the franc # 12 formed below the first center post 123
When 3b comes into contact with a ring-shaped projection 121b formed inward near the upper end of the second center post 121, the second center post 121 rises, and the flan # 121a formed at the lower end of the second center post 121 is The first and second center posts 121 and 123 stop rising when they come into contact with the ring-shaped protrusion 101c formed inward near the upper end. At the time of lowering, the outer peripheral end of the bush 122 abuts on the bush 120, the lowering of the second center post 121 stops, and the flan # 118 bolted to the upper end of the first center post 123 abuts on the bush 122. Then, the lowering of the first center post 123 also stops.

The upper end of the bladder B is sandwiched between a bladder retainer 117 bolted to a franc # 118, and the distance between the upper and lower ends of the bladder B increases or decreases as the center post 123 moves up and down. Substrate 1
01 is attached to the cylindrical portion 101a of the tire T via the bladder B.
A passage 101b for supplying / discharging the heating / pressurizing medium is provided in the inside, and the lower end of the passage 101b can be attached to and detached from the pipe 6g of the mold opening / closing device 6 via a known attaching / detaching means 126. I have. That is, the attaching / detaching means 126 slides with the valve body 127 embedded and fixed in the substrate 101 and one inner peripheral surface 127b of the valve body 127 as a guide.
A check valve comprising a valve body 128 having a seat surface 127a engaged with a valve seat 127a formed at an intermediate portion of the valve body 27, a coil spring 129 for pressing the valve body 128 against the valve seat 127a, and assembled to the frame 6e. And a pipe 6g having a cylindrical surface which is slidably engaged with the other inner peripheral surface 127c of the valve body 127 at the outer periphery of the distal end thereof. At the tip, valve body 12
8 is formed into a Y-shape that abuts on a valve rod 128c extending toward the seat surface 127a. When the pipe 6g is inserted into the valve body 127, the valve body 128 is pushed up to allow the passage 101b to communicate with the pipe 6g. When the pipe 6g is lowered, the valve body 128
Is pushed down by the coil spring 129, and the passage 101b
Is to be closed. A switching valve (not shown) and the like are incorporated between the pipe 6g and the heating / pressurizing medium supply source.

The first center post 123 is also provided with a passage 123a for introducing shaping steam or the like into the tire T via the bladder B.
Similar attachment / detachment means is attached below 23a. As is clear from the above description, the mold opening and closing device 6
Compared to the conventional tire vulcanizer, there is no pressing means for tightening the tire mold so that the tire mold does not open against the force of the tire mold opening due to the pressure of the heating and pressurizing medium. Except for the point and the point where the attachment / detachment means is provided,
It is almost the same.

Next, the operation of the first embodiment of the tire vulcanizing equipment will be described. FIG. 1 shows that the vulcanization of the tire in the tire mold Ma which has been in the mold stand 5a of the vulcanization station 1a is completed, and the mold opening / closing station 2 is moved by the mold carrier 3a.
7A shows a state in which the wafer has been carried into the mold opening / closing device 6a. From this state, first, the cylinder 6d is operated, the arm is lowered, and the tire mold Ma is
While connecting the upper heating plate 114 and the arm 6c, the pipe 6g is raised to communicate with the passage 101b, the extension rod 6j is raised slightly, the passage 123a is also communicated, the cylinder 6h is rotated, and the claw 6j And 123c are engaged.

Next, a switching valve (not shown) is operated,
The heating and pressurizing medium in the tire T is discharged, and after confirming that the pressure in the tire T has sufficiently decreased, the cylinder 6f is operated to push up the lower heating plate 103. By this pushing up, the tread mold 109 is released relatively away from the tire T. When the diameter of the tread mold 109 is sufficiently expanded and the engagement between the claws 110b and 110c of the segment 110 and the claws 103a and 114a of the upper and lower heating plates is released, the upper heating plate 114 is raised by operating the cylinder 6d. The upper side wall mold 113 is released, and the center post 12 is released while applying a vacuum to the bladder B through the passage 123a.
3 is raised, and the bladder B is pulled out from the inside of the tire T.

Next, by the action of the unloader 7a, the vulcanized tire T is suspended outside the tire mold Ma, and the loader 8a
, The unvulcanized tire T to be vulcanized next is suspended in the tire mold Ma. While supplying shaping steam into the bladder B through the passage 123a, the center post 123 is lowered to insert the bladder B inside the suspended unvulcanized tire T. Is released and moves to the standby position. When it moves to a position where it does not interfere with the upper heating plate 114, the upper heating plate 114 is lowered by the operation of the cylinder 6d, and the shaping and tire mold closing processes are performed in a known procedure.
After the abutment with the segment 110, the cylinder 6f is also operated, and the lower hot plate 103 is pushed down by the upper hot plate 114 via the segment 110, and the tread mold 109 is reduced in diameter by this pushing down, and the tire The mold Ma is closed.

At this time, since the pawls 110c and 114a and 103a and 110b are simultaneously engaged, the heating and pressurizing medium is introduced into the tire T through the bladder B after the tire mold Ma is closed. Thus, even if the vulcanization is started, the force for opening the mold by the pressure of the heating and pressurizing medium is offset via the segment 110 by the engagement of the claws 110c and 114a and 103a and 110b. , The mold does not open.

After the tire vulcanization is started, the connection between the tire mold Ma and the mold opening / closing device 6a is released in the reverse procedure. At this time, since the check valves are incorporated in the lower ends of the passages 123a and 101b, the tire internal pressure is maintained. Next, the tire mold Ma is moved to the mold carrier 3
a, it is conveyed onto the mold stand 5a of the vulcanization station 1a and the vulcanization is continued, and the mold carrier 3a receives the tire mold that has been vulcanized next, and opens and closes the mold opening and closing station 2a. Transport to

When the bladder B or the like is replaced, the mold is once closed without suspending the tire T to be vulcanized next (in this case, of course, the heating and pressurizing medium is not introduced).
While transported to the mold exchanging station 11 and the bladder B and the like are exchanged, in the mold transporting trolley 3a and the mold opening / closing station 6a, another tire mold is loaded and unloaded.
When the replacement of the bladder B and the like is completed, the bladder B is transported to the mold opening / closing station, where the tire to be vulcanized is inserted.

Next, a second embodiment of the tire vulcanizing equipment of the present invention will be described with reference to FIGS. The same functional components are denoted by the same reference numerals, and only the portions different from the first embodiment will be described. The vulcanizing station 12 (12a and 12b) is provided with a plurality of tire dies M (Ma, Mb, M).
c,...) are mounted on a plurality of mold stands 5 (5a, 5b, 5).
c,...) and a frame 14 on which a plurality of mold stands 5 are assembled. Each mold stand 5 has a mold moving means (for example, a cylinder-driven pusher) not shown, if necessary. A heating / pressurizing medium replenishing means, a pipe, and the like are provided. The arrangement of the mold opening / closing station 6 (6a and 6b) with respect to the vulcanizing station 12 is different from that of the first embodiment, but the configuration and operation are the same.

The mold transporting trolley comprises a rail 4 fixed to the floor and a known trolley 13 (13a and 13b) guided by the rail 4 and running by the action of a driving means (not shown). This point is the same as the first embodiment, but the tire mold M can be mounted in two areas. Moreover, the loading surface can be moved up and down, and at the time of lowering, the lower mold table 5 and
The first embodiment differs from the first embodiment in that the upper mold table 5 and the tire mold mounting surface height are configured to be the same when ascending.

FIG. 3 shows that the vulcanized mold Ma in the mold stand 5a is conveyed to the mold opening / closing station 2a to complete the loading and unloading of the tires, and the vulcanization is carried out in the mold stand 5b. This shows a state in which the mold Mb for which the sulfurization has been completed is stacked at one loading position of the mold carrier 13a, and the empty loading position is moved to the front of the mold opening / closing device 6a and stopped. From this state, first, the tire mold Ma for which tire loading / unloading has been completed is moved to the empty loading position of the mold carrier 13a by manual driving (not shown), and then the tire is placed in front of the mold opening / closing device 6a. The truck 13a is moved and stopped so that the mold Mb comes, and the tire mold Mb is supplied into the mold opening / closing device 6a. The vulcanized tire T of the tire mold Mb is carried out according to the above procedure, and the unvulcanized tire T to be vulcanized is suspended, and the bogie is closed while the shaping and mold closing processes are performed. 13a, the tire mold Ma is conveyed onto the mold stand 5a, and then the vulcanized tire mold (for example, Mc) is placed at a predetermined position (Mb in FIG. 3) on the carriage 13a. Position) and come back.

[0031]

The tire vulcanizing equipment of the present invention is configured as described above, and can achieve the following effects. That is, (1) a tire mold of a type in which the force for opening the tire mold due to the pressure of the heating and pressurizing medium is canceled inside the tire mold, and the tire mold is detachable from the mold opening / closing device. Since the tire mold during tire vulcanization is transported to the vulcanization station, the operating rate of the equipment for opening and closing the tire mold, which had a poor operating rate, and loading and unloading the tire can be greatly improved. . (2) Placing the mold changing station in the mold carrier truck traveling space allows the bladder etc. to be replaced safely and without disturbing other tire vulcanization cycle times, so that the entire equipment operates. Rate can be improved. (3) By allowing the mold carrier to carry two areas of the tire mold, the tire mold can be transported to and from the vulcanization station while the tire is being carried in and out of the mold opening and closing station. The operation rate of the mold opening and closing device can be improved, and the production performance of the entire equipment can be improved. (4) The vulcanization station is capable of arranging the tire dies during vulcanization in at least two upper and lower stages, and the equipment space for tire equipment having a relatively long vulcanization time as compared with the tire loading / unloading time. The number of processed tire mold surfaces can be increased without increasing the number of tires, and the equipment space can be greatly reduced for tire equipment having a relatively short vulcanization time.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of a tire vulcanizing facility of the present invention.

FIG. 2 is a longitudinal sectional front view taken along line aa of FIG. 1;

FIG. 3 is a plan view showing a second embodiment of the tire vulcanizing equipment of the present invention.

FIG. 4 is a vertical sectional front view taken along the line a ″ -a ″ in FIG. 3;

FIG. 5 is a vertical sectional front view taken along line a'-a 'of FIG. 2;

6 is a vertical sectional side view taken along line ee in FIG. 5;

7 shows one of the upper hot plate attaching / detaching means along the line ff in FIG. 6;
It is a cross-sectional plan view showing an example.

8 is a cross-sectional plan view showing a connected state of the upper hot plate attaching / detaching means along the line ff in FIG. 6;

9 is an enlarged vertical sectional side view of an arrow g part of FIG. 5;

FIG. 10 is a cross-sectional plan view taken along line hh in FIG. 9;

FIG. 11 is a cross-sectional plan view taken along line ii of FIG. 9;

[Explanation of symbols]

1a, 1b, 12a, 12b Vulcanizing station 5a, 5b, 5c, ... Mold table Ma, Mb, Mc, ... Tire mold 2a, 2b Mold opening / closing station 6a, 6b Mold opening / closing device 3a, 3b. 13a, 13b Mold carrier 11 Mold changing station T Tire B Bladder

Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B29L 30:00

Claims (4)

(57) [Claims] 1. A vulcanizing station for arranging and vulcanizing a plurality of sets of tire dies, opening the tire dies to take out a vulcanized tire, and then inserting and shaping an unvulcanized tire to be vulcanized. A tire opening / closing station that closes the tire die and a die carrier that transports the tire die between the vulcanization station and the die opening / closing station. Facility. 2. A vulcanization station for arranging and vulcanizing a plurality of sets of tire dies, opening the tire dies to take out a vulcanized tire, and then inserting and shaping an unvulcanized tire to be vulcanized. A mold opening / closing station for closing the tire mold and a mold exchanging station for exchanging the tire mold and the bladder, and a mold carrier for transporting the tire mold therebetween. Tire vulcanizing equipment characterized by the following. 3. The tire vulcanizing equipment according to claim 1, wherein the mold carrier has a structure in which tire molds can be mounted in two areas. 4. The tire vulcanizing equipment according to claim 1, wherein the vulcanizing station is capable of arranging the tire molds being vulcanized in at least two upper and lower stages.