JPH11268040A - Tire vulcanization machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the operating efficiency of a process to replace a mold by providing a tire vulcanization machine which positions each of carry-in loaders in the center of the front face side of a vulcanization machine frame during mold replacement. SOLUTION: Two units of a carry-in loader 8 are provide, in a freely ascending/gyrating manner, in the center of the front face side of a vulcanization machine frame 5. These carry-in loaders 8 are structurally able to gyrate between each of molds 7, and a green tire stock position P1 forward of the mold 7, and the position P1 and the front face side center position P2 of the vulcanization machine frame 5. In addition, each of the carry-in loaders 8 is gyrated to be positioned in the front face side center P2 of the vulcanization machine frame 5 during mold replacement to widen a space forward of each of the molds 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire vulcanizer for vulcanizing green tires (unvulcanized tires).

[0002]

2. Description of the Related Art Conventional tire vulcanizers such as those shown in FIGS. 10 and 11 have been proposed. The tire vulcanizer 101 includes two guide vulcanizers 102 arranged side by side with a guide column 103 erected at a central portion on the front side of a vulcanizer frame 102.
There are provided two molds 104 (metal molds) and two carry-in loaders 106 provided on the guide columns 103 so as to be able to move up and down and rotate.

[0003] The green tire 10 is
In order to vulcanize the mold 5, each loader 106 is turned to the green tire holder 107 in front of each mold 104, and each claw 109a of the tire chuck 109 is lowered.
Is inserted into a green tire 105 (unvulcanized tire) and expanded to grip. And green tire 10
After holding each of the molds 5, each loader 106 is
04, and carried between the molds 104 in the open state. Thereby, the green tire 105 is set in each mold 104, and vulcanization molding is performed through a desired process. The vulcanized tire is a tire vulcanizer 101.
Mold 104 by two unloaders (not shown).
And is conveyed to a post cure inflator that performs expansion cooling.

Further, it is necessary to replace each mold 104 according to the size and shape of the tire to be vulcanized,
The exchange work is performed by suspending and transporting each mold 104 by a forklift 108 as shown in FIG. At the time of this exchange work, each carry-in loader 106 is raised and retracted to a position higher than the mast height so as not to contact the mast 110 of the forklift 108.

[0005]

SUMMARY OF THE INVENTION Conventional tire vulcanizer 1
In FIG. 01, since each loading loader 106 is configured not to turn more than between the mold 104 and the green tire holder 107 in order to prevent interference and collision with each other, it is necessary to replace each mold 104. Indicates that each loader 106 loads each mold 1 to the tire vulcanizer 101.
04 may be interrupted, and may contact the mast 110 of the forklift 108. For this reason, at the time of mold replacement, it is necessary to elevate and retreat each loader 106 to the height of the mast 110 or more.
The extra work takes extra time to move the 06 up and down. Also, each loader 106 is connected to the forklift 1
08 must be raised to the height of the mast 110 or more, and the stroke becomes long.
01 itself tends to be large.

In the tire vulcanizer of the present invention, the workability in the mold replacement operation is improved by positioning each carry-in loader at the center position on the front side of the vulcanizer frame at the time of mold replacement.

[0007]

The tire vulcanizer of the present invention comprises two loading loaders which are lifted and lowered at the center of the front side of the vulcanizer frame and the center of the front side of the vulcanizer frame. And two molds arranged side by side,
Each transport loader transports green tires from the green tire stock position in front of each mold to each mold.Each loading loader can be freely rotated between the mold, the green tire stock position, and the center position on the front side of the vulcanizer frame. Then, when each mold is replaced, it is located at the center position on the front side of the vulcanizer frame. It is possible to secure a wide space in front of each mold that is not obstructed by the loader by simply rotating the loader to the center position on the front side of the vulcanizer frame without raising the loader.

In addition, when each mold is replaced, each carry-in loader can be positioned at a central position on the front side of the vulcanizer frame so as to be vertically overlapped. When each loading loader is moved up and down by an interval that does not contact each other and turned so as to share the center position on the front side of the vulcanizer frame, the space for retracting each loading loader from the front of each mold is minimized,
Not only one mold but also two mold exchange operations can be performed at the same time.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a tire vulcanizer according to an embodiment of the present invention will be described with reference to FIGS.

In FIGS. 1 and 2, a tire vulcanizer 1 is of a twin type capable of simultaneously vulcanizing and molding two green tires 2 (unvulcanized tires). Tire vulcanizer 1
Has a vulcanizer frame 5 formed by erecting a frame 4 on a base 3 and a guide column 6 erected at a central portion on the front side of the vulcanizer frame 5. Two molds 7 arranged side by side on a machine frame 5 with a guide post 6 interposed therebetween
(Die) and two loading loaders provided on both sides of the guide column 6 so as to be able to move up and down and pivot freely.

Each mold 7 is composed of upper and lower mold portions 7A and 7B which can be opened and closed relatively up and down. Each upper mold portion 7A is raised and lowered by a lift cylinder (not shown) provided at the center of the vulcanizer frame 5 with respect to each lower mold portion 7B fixed to the lower portion of the vulcanizer frame 5.

Each carry-in loader 8 is pivotally supported by a lift 10 that moves up and down on a guide rail extending along the guide column 6. The elevating table 10 (the loading loader 8) is moved up and down by the elevating cylinder 9, and its elevating stroke is detected by the linear sensor 11 and displayed on a control panel (not shown) for executing a control sequence. Each loading loader 8 is provided with a swing arm 1 that is supported by a swing shaft 12 of a lift 10.
3 and a tire chuck 14 provided at the tip of the turning arm 13. The tire chuck 14 is turned by a turning cylinder 15 shown in FIGS. 3 to 5.

The tire chuck 14 is provided with three or more claws 14a whose diameters are simultaneously increased or decreased in the radial direction at equal intervals in the circumferential direction. Green tire stock position P
The green tire 2 is gripped by the upper bead portion 2A by inserting the claws 14a in a reduced diameter state into the green tire 2 in 1 and expanding the diameter. Further, the tire chuck 14 is provided with each claw 1.
The green tire 2 is opened by reducing the diameter of the claw 4a, and the diameter of each claw 14a is increased or reduced by an air cylinder or the like (not shown). The green tire holder 16 faces the green tire stock position P1 in front of each mold 7, and the three tire holder portions 16A rotate so as to be sequentially positioned at the green tire stock position P1.

Referring to FIGS. 3 to 7, the concrete configuration of each carry-in loader 8 will be described.

Each loading loader 8 shown in FIG. 3 shows a state where the tire chuck 14 is turned on each mold 7. Each loading loader 8 is provided with a shock absorber 18 via a support bracket 17 below the turning arm 13.
(See FIGS. 6 and 7) The swivel cylinder 15 pivotally supported together.
(Air cylinder) makes it possible to turn freely between each mold 7 and the green tire stock position P1. As shown in FIGS. 6 and 7, the swing cylinder 15 has a cylinder body rotatably supported by a swing arm 13 and a support bracket 17, and a tip of a rod 19 is connected to the swing bracket 20. The swivel bracket 20 is fixed to the lower portion of the lift 10 and protrudes toward the vulcanizer frame 5, and is connected to the tip of the rod 19 of the swivel cylinder 15 by a swivel pin 21 (see FIG. 6). The shock absorber 18 is rotatably provided on the revolving arm 13 and the support bracket 17 in parallel with the revolving cylinder 15, and a revolving pin 21 is inserted into the distal end side and connected to the revolving bracket 20 (see FIGS. 6 and 7). ). The shock when the rod 19 of the turning cylinder 15 expands and contracts can be buffered by the shock absorber 18.

In this configuration, when each loading loader 8 extends the rod 19 of each turning cylinder 15, the turning arm 13 is turned around the turning shaft 12 as shown in FIG. 7 to the green tire stock position P1.

When each loading loader 8 contracts the rod 19 of each turning cylinder 15, each loading chuck 8 turns each tire chuck 14 from the green tire stock position P1 to above the mold 7, as shown in FIG.

Further, when each of the loading loaders 8 pulls out the turning pin 21 from the turning cylinder 15 and the turning bracket 20, the turning load-free state is established. As shown in FIG. 5, the green tire stock position P1, the mold 7 and the Tire chuck 1 between center position P2 on the front side of vulcanizer frame 5
3 can be manually turned.

Each loading loader 8 can be positioned and fixed by a fixing pin 22 when it is turned to the central position P2 on the front side of the vulcanizer frame 5 in FIG. The fixing pin 22 is inserted into a fixing bracket 23 fixed to the upper part of the elevator 10, and the rotating cylinder 15 in the extended state is
(See FIG. 5). The rotation of each loader 8 is thereby restricted, and the tire chuck 14 of each loader 8 is moved to the center P2 on the front side of the vulcanizer frame 5.
Can be positioned. Further, by pulling out the fixing pin 22, each loading loader 8 is set in a free rotation state so that the tire chuck 1 is moved from the front center position P2 of the vulcanizer frame 5 to the green tire stock position P1 or the mold 7.
4 can be turned (see FIGS. 3 to 5). The positioning of each loading loader 8 with respect to the mold 7, the green tire stock position P1, and the center position P2 on the front side of the vulcanizer frame 5 is performed by a plurality of proximity switches 26 to
28 is performed by detecting the detection piece 25 of the turning arm 13.

Next, the operation of replacing each mold 7 in the tire vulcanizer 1 will be described.

In order to exchange one mold 7, the green tire holder 16 in front of each mold 7 is moved so that the green tire holder 16 can be transported from the front of the tire vulcanizer 1 by a forklift. After lowering each carry-in loader 8 to the lower limit position, the swivel pin 21 of the carry-in loader 8 corresponding to the mold replacement is pulled out from the tip of the rod 19 of the swivel cylinder 15 and the swivel bracket 20 to be in a swivel free state.

Subsequently, the carry-in loader 8 to be replaced with a mold is manually turned by the operator from the green tire stock position P1 toward the guide post 6, and as shown in FIG. 14 is positioned at the center position P2 on the front side of the vulcanizer frame 5. At this time, turning of the tire chuck 14 is performed by each of the proximity switches 26 to
The rotation is adjusted by the operator based on the detection result, and the tip of the rod 19 of the rotation cylinder 15 is positioned below the fixed bracket 23. That is, the detection piece 2
When the proximity switch 28 detects 5 and turns on, the turning of the tire chuck 14 is stopped, thereby positioning the tire chuck 14 at the front center position P2 of the vulcanizer frame 5.

After the carry-in loader 8 is positioned at the center position P2 on the front side of the vulcanizer frame 5, the fixing pins 22 are inserted into the fixing brackets 23 so that the revolving cylinder 15 and the fixing brackets 23 And the tire chuck 14 is positioned at the front center position P2 of the vulcanizer frame 5. Thereby, the transport space by the forklift can be expanded without blocking the front of the mold 7 with the transport loader 8.

After the loading loader 8 is positioned at the center position P2 on the front side of the vulcanizer frame 5, as shown in FIG.
The mold 7 is transported in a suspended state by the fork 31 of the forklift 30 to perform an exchange operation. At this time, since the space in front of the mold 7 is widened, the replacement operation by the forklift 30 can be easily performed.

When both molds 7 are simultaneously replaced, the respective green tire holders 16 are retracted,
One loading loader 8 is lowered, and the other loading loader 8 is positioned above with a distance that does not contact the one loading loader 8. The elevation of each loader 8 is detected and controlled by the linear sensor 11. After each loading loader 8 is moved up and down with a distance up and down, the turning pin 21 is pulled out of the turning cylinder 15 and the turning bracket 20 to make the turning free state.

Subsequently, each loading loader 8 is manually turned by the operator from the green tire stock position P1 toward the guide post 6, and the tire chucks 14 are vertically moved relative to each other as shown in FIG. The vulcanizer frame 5 is positioned at the central position P2 on the front side in the overlapping state. At this time,
The turning of each tire chuck 14 is performed by each of the proximity switches 26-2.
8, the operator adjusts the turning amount based on the detection result, and positions the tip of the rod 19 of the turning cylinder 15 below the fixed bracket 23. That is, the detection piece 25
Is detected by the proximity switch 28 and the turning of the tire chuck 14 is stopped when the proximity switch 28 is turned on.
4 is positioned at the front center position P2 of the base frame 5.

After each loading loader 8 is positioned at the center position P2 on the front side of the vulcanizer frame 5, the fixing pins 22 are inserted into the fixing brackets 23 of the loading loaders 8, whereby the turning cylinders are rotated by the fixing pins 22. The tire chuck 14 is positioned at the central position P2 on the front side of the vulcanizer frame 5 by connecting the fixed bracket 15 to the fixed bracket 23. Thereby, the transport space by the forklift can be expanded without blocking the front of each mold 7 with each loading loader 8.
Further, since the carry-in loader 8 is turned to the center position P2 on the front side of the vulcanizer frame 5, it does not come into contact with the forklift.

After each transport loader 8 is positioned at the center position P2 on the front side of the vulcanizer frame 5 in a vertically overlapping state, each mold 7 is suspended and transported by a fork 31 of a forklift 30 as shown in FIG. Perform replacement work. At this time, since the space in front of the mold 7 is widened, the replacement operation by the forklift 30 can be easily performed. Further, since each loader 8 is turned to the center position P2 on the front side of the vulcanizer frame 5, it does not come into contact with the forklift 30 (see FIG. 9B).

When the exchange operation of each mold 7 is completed, each loading loader 8 is set in a free rotation state by extracting the fixing pin 22. Then, the loader 8 is turned to move the tire chuck 14 to the green tire stock position P1.
And the turning pin 21 is inserted into the turning bracket 20 so that the turning bracket 20 and the turning cylinder 15
Concatenate. In this state, the rod 1 of the swing cylinder 15
9 to expand and contract the green tire stock position P
The green tire 2 is carried in from 1 to each mold 7 and is shifted to vulcanization molding. The tire vulcanized by the tire vulcanizer 2 is carried out by two unloaders (not shown) provided on the rear center frame of the vulcanizer frame 5 so as to be able to move up and down and pivot.

As described above, according to the tire vulcanizer 1 of the present invention, when each mold 7 is replaced, each loader 8 is retracted so as to be located at the central position P2 on the front side of the vulcanizer frame 5. Therefore, in order to avoid contact of the forklift 30 with the mast 32, the space in front of each mold 7 can be widened without raising each carry-in loader 8 beyond the mast height. As a result, the workability of each mold changing operation by the forklift 30 can be improved, and the lifting stroke of each carry-in loader 8 can be minimized, so that the tire vulcanizer 1 itself can be downsized.

In the tire vulcanizer 1 according to the present invention,
Each loading loader 8 is positioned at the center P on the front side of the vulcanizer frame 5.
As the means for turning to 2, the manual operation by the operator is shown, but it is not limited to this. That is, by lengthening the expansion and contraction stroke of the swivel cylinder 15, the swivel cylinder 15 causes the loader 8 to automatically swivel between the mold 7, the green tire stock position P <b> 1, and the front center position P <b> 2 of the vulcanizer frame 5. You may do it. With this configuration, the vulcanizer frame 5 can be moved by the turning cylinder 15 without lowering each of the loaders 8 once to the lower limit position during mold replacement.
, The workability of the mold changing operation can be remarkably improved.

Further, not only when the two molds 7 are simultaneously replaced but also when only one of the molds is replaced, the vulcanizer frame 5 is placed with the transport loaders 8 vertically stacked.
May be positioned at the front center position P2.

[0033]

According to the tire vulcanizer of the present invention, when each mold is replaced, each carry-in loader is located at the center position on the front side of the vulcanizer frame, so that the forklift does not contact the mast. The space in front of each mold can be widened without raising each loader above the mast height. As a result, the accessibility of each mold changing operation by the forklift can be improved, and the vertical stroke of each carry-in loader can be minimized, so that the tire vulcanizer itself can be reduced in size.

Further, when each mold is replaced, each carry-in loader is positioned at the center position on the front side of the vulcanizer frame in a state where the carry-in loaders are vertically overlapped. By turning so as to share the center position on the front side of the vulcanizer frame, the space for retracting each loader from the front of each mold is minimized, and not only one mold but also two molds can be exchanged at the same time. it can.

[Brief description of the drawings]

FIG. 1 is a top view showing the overall configuration of a tire vulcanizer.

FIG. 2 is a side view showing the entire configuration of the tire vulcanizer.

FIG. 3 is a diagram showing a specific configuration of a loading loader of the tire vulcanizer, and is an enlarged view showing a state where the loading loader is located on a mold.

FIG. 4 is a diagram showing a specific configuration of a loading loader of the tire vulcanizer, and is an enlarged view showing a state where the loading loader is located above a green tire stock position.

FIG. 5 is a diagram showing a specific configuration of a carry-in loader of the tire vulcanizer, and is an enlarged view showing a state where the carry-in loader is located at a central position on the front side of a vulcanizer frame.

FIG. 6 is a view on arrow AA of FIG. 3;

FIG. 7 is a view taken in the direction of arrows BB in FIG. 3;

FIG. 8 is a diagram showing one mold exchange operation for the tire vulcanizer.

FIG. 9 is a diagram showing both mold replacement operations for the tire vulcanizer.

FIG. 10 is a top view showing the overall configuration of a conventional tire vulcanizer.

FIG. 11 is a side view showing the overall configuration of a conventional tire vulcanizer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tire vulcanizer 2 Green tire 5 Vulcanizer frame 6 Guide support 8 Loading loader 16 Green tire holder P1 Green tire stock position P2 Front center position

Continued on the front page (51) Int.Cl. ⁶ Identification code FI B29L 30:00

Claims (2)

[Claims] The vulcanizer frame includes two loading loaders that are lifted and lowered at a center position on the front side of the vulcanizer frame, and two molds arranged side by side with the center position on the front side of the vulcanizer frame. A tire vulcanizer that transports a green tire from a green tire stock position in front of each mold to each mold by each transport loader, wherein each of the loading loaders includes the mold, the green tire stock position, and a front center of a vulcanizer frame. A tire vulcanizer, which is rotatable between positions, and is located at a central position on the front side of the vulcanizer frame when each mold is replaced. 2. The tire vulcanizer according to claim 1, wherein each of the carry-in loaders is positioned at a center position on the front side of the vulcanizer frame in a state of being vertically overlapped when each of the molds is replaced. Machine.