JPS63221017A - Postcure inflator - Google Patents

Abstract

PURPOSE:To improve safety, by switching a plurality of switchable hang-up nails connected with a holder for holding one of the tire bead parts, hanging them on a step of a holder for holding another one when the inner pressure is filled into a tire and mutual connecting them. CONSTITUTION:When a vulcanized tire T is air-cooled, an inner pressure is filled in the tire T. The first and the second holders 36 and 39 are separated from each other by this filled inner pressure and hang-up nails 53 are hung up on a step 54 of the second holder. The first and the second holders 36 and 39 are thereby connected with each other, and this state is kept for a long time to air-cool the vulcanized tire. Then, the tire T whose air-cooling has been completed is taken out of the holding means 6 and 7 by rotating a rotating frame 4, and a new vulcanized tire is set on the holding means 6 and 7. At this time, while the rotating frame 4 is being rotated, a large vibration is acted on each holding means 6 and 7 and the first and the second holders 36 and 39 are rotated, but because the hang-up nails 53 hung up on the step 54 which continues in the circumferential direction, the hang-up nails do not slip out from this step and the safety is remarkably improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a post-cure inflator that maintains a vulcanized tire with internal pressure and cools it with air.

[Kamitatsu Niametsu] Conventionally, as a post-cure inflator, one described in, for example, Japanese Patent Application Laid-open No. 199840/1984 has been known. This includes a post-cure inflator frame that rotates at least 180 degrees about a horizontal pivot axis, and a pair of post-cure inflator frames mounted 180 degrees apart on the frame, each capable of holding a vulcanized tire filled with internal pressure. holding means, each holding means comprising a housing and a lower post cure inflator ring that hold one bead part of the tire, a lock ring and an upper post cure inflator ring that hold the other bead part of the tire, A lock is rotatably supported by the housing and has a bayonet lock pawl at its tip that can be engaged with a bayonet lock pawl formed on the lock ring. When a vulcanized tire is air-cooled using such a post-cure inflator, both beads of the tire are held by the upper and lower post-cure inflator rings, and the bayonet lock pawl of the lock is inserted into the lock ring. After that, the lock ring is rotated by a predetermined angle so that it can be locked with the bayonet lock pawl of the lock ring.Next, when internal pressure is filled in the tire, the lock and the lock ring are separated from each other by the internal pressure, but this separation is The bayonet lock pawls stop when they come into contact with each other, thereby bayonet locking the lock and lock ring to each other. This state is maintained for a long period of time to air cool the tire, but when a new vulcanized tire is delivered to this post-cure inflator, the post-cure inflator frame is
After rotating 80 degrees, the tires are mounted and air cooled in the same manner as described above.

< -- However, in such a post-cure inflator, the lock and the lock ring are separated by a bayonet lock pawl formed at the tip of the lock and consisting of a plurality of protruding pieces spaced apart in the circumferential direction, and a bayonet lock pawl formed on the lock ring. Since bayonet locking is achieved by contact with bayonet lock pawls made up of multiple projecting pieces separated in the circumferential direction, if the lock and lock ring rotate relative to each other by more than a predetermined angle for various reasons after bayonet locking, this will occur. There is a problem that the bayonet lock may come off and become dangerous. In particular, in such a post-cure inflator, each time a new vulcanized tire is brought in, the holding means is rotated 18 times around the rotation axis.
Since it rotates by 0 degrees, large vibrations act on the bayonet lock pawl, making it easy for the lock and lock ring to rotate relative to each other.

. - This problem is caused by a rotating frame that rotates intermittently around a horizontal rotation axis, and a vulcanized frame that is attached to the rotating frame and separates from each other in the rotation direction, and each is filled with internal pressure. and multiple holding means capable of holding the finished tires.

In the post-cure inflator, each holding means includes a first holder that holds one bead portion of the tire, and a second holder that holds the other bead portion of the tire and has a continuous step in the circumferential direction. , comprising a plurality of locking claws connected to the first holder and capable of being opened and closed, and a moving means for moving the locking claws to a position where they can be locked to the step by opening and closing these locking claws, When the tire is filled with internal pressure and the first and second holders are separated from each other, the locking pawl engages the second holder.
This problem can be solved by connecting the first and second holders to each other by engaging the steps of the holders.

When air-cooling a tire that has been cured for a month, the tire is carried into a post-cure inflator and one bead portion is held in a first holder and the other bead portion is held in a second holder.Next, a moving means is used. The locking pawls are operated to open and close the plurality of locking pawls, and the second hole is filled with internal pressure inside the tire, but this filled internal pressure causes the first and second holders to separate from each other, and the locking pawls become unlatched. The pawl locks onto the step of the second holder. As a result, the first. The second holders are connected to each other. The vulcanized tire is then held in this state for a long time to be air cooled. At this time, a vulcanized tire is already attached to the other holding means and is being air-cooled. When a new vulcanized tire is brought in, the rotating frame is rotated once and air cooling is completed. The tire is taken out from the holding means, and a broken, vulcanized tire is mounted on the empty holding means.

Here, while the rotating frame is rotating, large vibrations may act on each holding means, causing the first and second holders to rotate relative to each other. Since it is a step that is continuous in the circumferential direction, the first
Even if the second holder rotates relative to each other, the locking pawl will not come off the step, thereby significantly improving safety.

See 11 Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 1.2, l is a post-cure inflator installed on a floor surface 2, and this post-cure inflator 1 has a frame 3.

Reference numeral 4 denotes a rotating frame whose both ends are rotatably supported by the frame 3 via bearings (not shown). Can be rotated. A plurality of holding means 8.7 are attached to this rotating frame 4 at equal angles apart in the rotating direction of the rotating frame 4, in this embodiment two holding means 8.7 are spaced apart by 180 degrees, and each holding means B, 7 has an internal pressure. Each of the vulcanized tires T filled with can be held. A pinion 11 is fixed to the right end of the rotating frame 4, and a vertical rack 13 that engages with the pinion 11 is sandwiched between the pinion 11 and a guide roller 12 rotatably supported by the frame 3. . A cylinder 14 is connected to the frame 3 directly below the rack 13, and the rack 13 is fixed to the tip of a piston rod 15 (7) of the cylinder 14. As a result, when the piston rod 15 of the cylinder 14 protrudes or retracts,
The rotation frame 4 is intermittently rotated 180 degrees in the forward or reverse direction.
Rotate only once. The aforementioned pinion L1 and guide roller 12. The rack 13 and the cylinder 14 as a whole constitute a rotating means 18 that rotates the rotating frame 4 intermittently by equal angles about the rotating shaft 5. As shown in FIG. 1.2.3, each holding means 6.7 has a substantially cylindrical base 21 fixed to the rotating frame 4, and a screw 22 is formed on the inner surface of each base 21. The intermediate sleeve 23 is inserted and fixed. Each base 21 has a first lower holder 24.
It is detachably attached by a plurality of connecting means 25 as shown in Figure 2.4. Each connecting means 25 is connected to the base 21
Cylinder 27 attached via bracket 2θ to
One end of a first link 29 is connected to the tip of the piston rod 28 of each cylinder 27. A second link 30 has one end connected to the bracket 26 and the other end connected to the center of the first link 28. Reference numeral 31 denotes an L-shaped hook, and a bent portion of the hook 31 is connected to the other end of the first link 29, and one end of the hook 31 is connected to the bracket 28. When the piston rod 2B of the cylinder 27 is retracted, the hook 31 clamps the flange portion 32 of the lower holder 24 together with the base 21, as shown in FIG. 4, and connects the lower holder 24 to the base 21. A spring 33 is interposed between the bracket 2B and the piston rod 28, and this spring 33 biases the piston rod 2B in the retracting direction. Again, in FIG. 1.2.3, the lower rim 35 that holds one bead portion 81 of the vulcanized tire T in an airtight state is attached to the lower holder 24.

The lower holder 24 and the lower rim 35 described above collectively constitute the first holder 3B. Further, an upper holder 37 is slidably inserted into each lower holder 24 and connected to the upper holder 37 in a seal-like manner, and an upper rim 38 is attached to this upper holder 37 to hold the other bead portion B2 of the tire T in an airtight state. There is. The above-mentioned upper holder 37° upper rim 3rd is the second holder 39 as a whole.
Configure.

A passage 40 is formed in the base 21 and the lower holder 24, and air internal pressure is supplied to the first holder 3 through this passage 40.
θ, the second holder 38, and a chamber 41 surrounded by the tire T.
supplied within. Base 21. Intermediate sleeve 23, lower holder 24. A cylinder body 48 is housed in a substantially cylindrical space 42 surrounded by the upper holder 37, and a screw 47 is formed on the outer periphery of this cylinder body 4B. and,
This cylinder body 46 is inserted into the intermediate sleeve 23 with the screws 22 and 47 screwed together. At the tip of the cylinder body 4B, there is a bracket) 51 as shown in Fig. 3.5.
is formed, and the base ends of three locking claws 53 spaced apart at equal angles in the circumferential direction are swingably connected to this bracket 51 via pins 52. Each locking claw 53 has a tip at its tip.
The upper holder 37 has a protruding claw portion 55 that can be engaged with a circumferentially continuous step 54 formed on the inner surface of the upper holder 37 . These locking claws 53 are simultaneously swung open and closed by a moving means to be described later. In this way, the plurality of locking claws 53 are openably and closably connected to the first holder 3B via the cylinder body 4B. An integral cover 81 is fixed to the base end of the cylinder body 4B, and the integral cover 81 and the cylinder body 48 are rotatably supported by a cylindrical body 63 fixed to the rotating frame 4 via a pair of bearings 82. . A gear 64 is fixed to the cover unit 81, and when the gear 84 rotates, the screwing position of the cylinder body 48 changes in the axial direction, and the width between the lower rim 35 and the upper rim 38 is adjusted. Again, in FIG. 1.2.3, 65 is a wide gear that is rotatably supported by the rotating frame 4 and meshes with the gear 84, and this gear 65 is rotated by a motor 88 attached to the rotating frame 4. Ru. The aforementioned cylinder body 4B, gear 64, gear 85, and motor eB collectively constitute a width adjusting means 67 that adjusts the rim width. A piston 88 is housed in the cylinder body 4B so as to be movable in the axial direction, and the piston 88 moves inside the cylinder body 4θ into the first chamber 8.
9 and a second chamber 70. A piston rod 72 integrally formed with the piston 6B passes through the tip of the cylinder body 4e, and a cam 73 that can be held in the locking pawl 53 is attached to the tip protruding from the cylinder body 4B. 7
4 is a cylindrical body 83. One cover 81. This is a first supply/discharge passage that penetrates inside the cylinder body 48, and air is supplied and discharged to the first chamber θ8 through this first supply/discharge passage 74.
．． This is a second supply/discharge path that passes through the inside of the cover unit 61, and air is supplied to and discharged from the second chamber 70 through this second supply/discharge path 75.

When air is supplied to the first chamber 69 through the first supply/discharge path 74, the cam 73 retracts and closes the locking pawl 53, while air is supplied to the second chamber 70 through the second supply/discharge path 75. When supplied, the cam 73 protrudes to open the locking claw 53 and move the claw portion 55 to a position where it can be locked to the step 54. The aforementioned piston 68, piston rod 72, cam 73,
The first supply/discharge passage 74 and the second supply/discharge passage 75 as a whole are connected to the second holder 3S by opening and closing the retaining pawl 53.
The moving means 7 moves to a position where it can be locked on the step 54 of
Configure B.

A spring 77 is interposed between the piston 68 and the cover unit 61, and this spring 77 always urges the piston rod 72 to protrude, thereby assisting the protruding operation of the cam 73. At the upper end of the frame 3 is a vertical cylinder 81.
is fixed, and an elevating plate 83 is attached to the tip of a piston rod 82 of this cylinder 81. 84
is a guide rod fixed to the lifting plate 83,
This guide rod 84 moves in the axial direction while being guided by a guide sleeve 85.

A plurality of connecting means 8B having the same structure as the connecting means 25 are attached to the elevating plate 83, and each connecting means 8
B opens and closes the hook 88 by the cylinder 87, and connects the second holder 38 to the elevating plate 83 by sandwiching the flange portion 89 provided on the upper holder 37 between the hook 88 and the elevating plate 83. A cylindrical bracket 90 is fixed on the lifting plate 83, and a proximity switch 91 is attached to the peripheral wall of the cylindrical bracket 90. Reference numeral 92 denotes a detection rod that passes through the elevating plate 83, and seven flanges 93 and 94 are provided at both ends of the detection rod 82 to prevent removal. A spring 85 is interposed between the flange 94 and the lifting plate 83.
urges the detection rod 92 toward the cam 73.

When the cam 73 retracts and engages with the base end of the locking pawl 53 to close the locking pawl 53, the detection rod 92 is retracted by the spring θ5, so that the elevating plate 83 It hardly protrudes from the top surface,
As a result, the proximity switch 91 cannot detect the detection rod 92 and is in a non-operating state. On the other hand, when the cam 73 protrudes and engages with the tip of the locking pawl 53 to open the locking pawl 53, the detection rod 92 is pushed out by the piston rod 72 and protrudes from the upper surface of the lifting plate 83. As a result, the proximity switch 91 detects the detection rod e2 and operates. The aforementioned proximity switch 81, detection rod 92. The spring 85 as a whole constitutes a detection means 98 for detecting opening and closing of the locking pawl 53.

Next, the operation of one embodiment of the present invention will be explained.

Now, the tires T filled with internal pressure are mounted on the holding means 6 and 7, and air cooling is continued, and the tire T mounted on the holding means 8 located on the upper side is located on the lower side. Assume that the tire T mounted on the holding means 7 is carried into the post-cure inflator l before the tire T mounted on the holding means 7. At this time, the piston rod 82 of the cylinder 81 is retracted, and the elevating plate 83 is detached from the second holder 38 and is attached to the holding means 8, which is waiting at the upper limit as shown in FIG. 1.2. When the air cooling of the tire T is completed, and when the vulcanization of the tire T is completed in a vulcanizer (not shown), the internal air pressure is discharged from the chamber 41 of the holding means 8 through the passage 40. As a result, the second holder 39 of the holding means 8 falls due to its own weight, and the distance between the lower rim 35 and the upper rim 38 is reduced. As a result, the tire T has both bead portions B1.
B2 is deformed to approach, and the step 54 moves away from the claw part 55. Air is supplied to the first chamber 88 through the first supply/discharge path 74, and air is supplied into the second chamber 70 through the second supply/discharge path 75. Exhaust the air. As a result, the piston 88, the piston rod 72. The cams 73 move back together from the position shown in the right half of FIG. 3 to the position shown in the left half of FIG. close all at once and close the second holder 39.
The second holder 38 and the first holder 3θ are disconnected from each other completely. At this time, the detection rod 92 is urged by the spring 85 and retracts, and the piston rod 8 of the cylinder 81
2 protrudes and the elevating plate 83 descends until it comes into contact with the upper holder 37. Next, the cylinder 87 of each connecting means 86
is activated, the hook 88 clamps the flange portion 89 of the upper holder 37 together with the elevating plate 83, and connects the second holder 39 to the elevating plate 83. Lift up the second holder 39 of the holding means 8. As a result, a wide space is created above the tire T, making it easier to replace the tire T.Next, the air-cooled tire T is taken out from the first holder 3B of the holding means 8 by a loader (not shown) and the next step After being carried out, the new tire T immediately after vulcanization is carried into the empty holding means 6 and placed on the first holder 36. At this time, one bead portion B1 of the tire T
is held by the lower rim 35 Next, when the loader retreats, the piston rod 82 of the cylinder 81 protrudes and the elevating plate 83 descends together with the second holder 39. By lowering the second holder 38, the upper holder 37 is inserted into the lower holder 24, and the upper holder 37 and the lower holder 24 are joined at the mark portion, and then the upper rim 38 engages with the other bead portion B2. Next, when air is supplied into the second chamber 70 through the second supply/discharge path 75, the piston 68,
Piston rod 72. The cam 73 is pushed by this air and the spring 77 and protrudes, and the air in the first chamber B9 is discharged through the first supply/discharge path 74. As a result, cam 7
3 separates from the base end of the locking pawl 53 and pushes the tip, and each locking pawl 53 swings and opens at the same time.As a result, the pawl portion 55 faces the step 54 of the upper holder 37. As a result, the locking claw 53 can be locked to the upper holder 37. At this time, the detection rod 82 is pushed up by the piston rod 72, so the proximity switch 81
2 is detected. This causes the locking claw 53 to lock onto the upper holder 37.
It is detected that the opening to the position where it can be locked is detected.
The cylinder 87 of the connecting means 8B is operated, the hook 88 is detached from the upper holder 37, and the second holder 39 is released from the lifting plate 83.Next, the piston rod 82 of the cylinder 81 is retracted and the lifting plate 83 reaches its upper limit. Go up and wait. At this time, the detection rod 92 is urged by the spring 95 and descends until the flange 93 comes into contact with the elevating plate 83. Then, a predetermined internal air pressure is supplied into the chamber 41 through the passage 40. As a result, the second holder 39 is pushed up and separated from the first holder 3B, and the tire T is filled with internal pressure. When the step 54 comes into contact with the locking claw 53 and is locked, the second holder 39
stops rising, and the first holder 3B and the second holder 39 are connected to each other. In this way, air cooling of the tire T starts, but during such air cooling, organic components volatilized from the tire T become tar-like and
It adheres to the surface of the lower holder 37.24. However, in this embodiment, since the upper and lower holders 37 and 24 are joined together, the tar-like material that has adhered and hardened on the surface of the upper holder 37 is removed from the upper and lower holders.
It is scraped off by the approach/separation movement of the lower holder 37.24,
The axial movement of the upper holder 37 is not obstructed, and in this embodiment, the upper and lower holders 37.
Since the connecting portions of screws 22 and 47 are isolated from the chamber 41 by connecting the marked portions of screws 24 and 24, the resin-like substance will not adhere to these screw portions. Then, the piston rod 1 of the cylinder 14
5 is retracted and the rack 13 is lowered. As a result, the pinion 11 rotates 180 degrees together with the rotating frame 4, and the positions of the tires T that have newly started air cooling are shifted to the lower side, while the positions of the tires T that have been completely air cooled are switched to the upper side. At this time, large vibrations act on each of the holding means 8 and 7, and the first holder 3B and the second holder 39 may rotate relative to each other. Since it is locked, there is no possibility that this lock will come off. 0 or more, which is maintained in this state until the end of air cooling of the upper tire T and the end of vulcanization in the vulcanizer, is one of the features of the present invention.
It is a cycle, and this cycle is repeated from now on.

During such air cooling work, the type of tire T was changed,
If the rim width has to be adjusted to accommodate this change, the motor B6 is operated nine times to rotate the gears 65, 84 and the cylinder body 4B, thereby moving the cylinder body 4B in the axial direction. This axial movement of the cylinder body 4B changes the distance from the claw portion 55 to the upper end of the lower holder 24, and when the upper holder 37 is locked to the claw portion 55, the upper and lower rims 38
．． The width between 35 and 35 is adjusted.

That is, as the claw portion 55 moves away from the upper end of the lower holder 24, the rim width becomes wider, while as the claw portion 55 approaches the upper end of the lower holder 24, the rim width becomes narrower.

After adjusting the rim width in this way, the air cooling operation as described above is resumed.

In addition, if the first and second holders 3B and 38 have to be replaced due to a change in the type of tire T, the first
Air is supplied to the chamber 89 to close the locking claws 53, and the piston rods 28 of each connecting means 25 are protruded to detach the hooks 31 from the lower holder 24.Next, the first
The lower holder 24 is supported from below by the /-end 88 of the exchanger 98 as shown in the figure, and the first and second holders 36.3
At the same time, the first and second holders corresponding to the tires T to be air-cooled for the first time are carried in and installed at once.Next, the connecting means 25 is activated and the lower holder is attached to the base 21 by the hook 31. After connecting to the tire T, air cooling work on the tire T is resumed.

In the above-mentioned embodiment, the first holder 36 and the second holder 39 are connected to each other by opening the locking pawl 53 so that the first holder 36 and the second holder 39 are connected to each other. The holding means B and 7 may be fixed to the step of the second holder by closing the holding means.Also, in the above invention, two holding means B and 7 are attached to the rotating frame 4, but in this invention, Three or more holding means may be attached.Furthermore, in the present invention, the number of locking claws may be two or four or more.

As explained above, according to the present invention, even if the first and second holders rotate relative to each other, the locking pawl does not come off the step, which greatly improves safety. · improves.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a locking pawl with the left half closed and the right half open. Front sectional view of main parts showing
FIG. 4 is a side view of the vicinity of the connecting means, and FIG. 5 is a plan view of the vicinity of the locking claw.

Claims (1)

[Claims] A rotating frame that rotates intermittently about a horizontal rotation axis, and a plurality of tires that are attached to the rotating frame and are spaced apart from each other in the rotating direction, each of which is capable of holding a vulcanized tire filled with internal pressure. In a post-cure inflator comprising a holding means, each holding means is
A first holder that holds one bead portion of the tire, a second holder that holds the other bead portion of the tire and has a continuous step in the circumferential direction, and a plurality of engagements that are connected to the first holder and can be opened and closed. and a moving means for opening and closing these locking pawls to move the locking pawls to a position where they can be locked to the step, and when the tire is filled with internal pressure, the first
A post-cure inflator characterized in that, when the second holders are separated from each other, a locking pawl locks into a step of the second holder to connect the first and second holders to each other.