JP4716561B2 - Engagement support device for annular body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an annular engagement support device that engages with the inner periphery of a green tire or other annular body that has been molded and supports annular bodies of various inner diameters without damaging them. is there.
[0002]
[Prior art]
As a conventional support device that contributes to the suspension support of the green tire by engaging with the inner periphery of the bead portion, for example, in supporting and conveying the green tire as an annular body, for example, the upper part is hinged Some of the lower end portions of the plurality of engagement blades are expanded and contracted by a cylinder or other actuator via a link mechanism.
[0003]
The suspension support of the green tire by this device is to displace the diameter of each of the plurality of blades with an actuator and bring them into contact with the inner periphery of one bead portion of the tire. This is done by pressing the inner circumference of the bead portion with a force superior to the weight.
[0004]
[Problems to be solved by the invention]
However, in such a conventional technique, it is necessary to continuously operate the actuator while supporting the green tire, and the output of the actuator can be increased as the weight of the green tire increases. There was a problem that it was necessary.
[0005]
Therefore, as a simple support device that does not require any special power, a device that supports the nail by engaging the nail with the bead portion of the green tire has been proposed. There is a possibility that the tire may be damaged, and there is a problem that it is necessary to change the jig for attaching the nail according to the inner diameter of the green tire.
[0006]
The object of the present invention is to solve such problems of the prior art, and the object of the present invention is to sufficiently cope with various inner diameter dimensions of the annular body with one device. An object of the present invention is to provide an engagement support device for an annular body having a simple structure that can eliminate the possibility of occurrence of scratches on the annular body and of course does not need to always apply a force against the weight of the annular body.
[0007]
[Means for Solving the Problems]
An engagement support device for an annular body according to the present invention is engaged with and supported by a plurality of oscillating blades on the inner periphery of an annular body, and is provided with a suspension portion at one end, for example, a cylinder A plurality of, preferably three or more, oscillating blades spaced in the circumferential direction are hinged to the intermediate portion of the shaft, for example, via a fixed arm projecting radially outward from the shaft, and the shaft A boss sliding on the boss is arranged on the top, and the free end of the oscillating blade is connected to the boss and protrudes radially outward from the fixed arm longer than the fixed arm. The boss slides in a state in which the link is tilted away from the fixed arm with respect to the posture perpendicular to the shaft axis, that is, the so-called over center, at the other end of the shaft. To restrain the strike The provided path, a handle for inputting a driving force on the shaft provided in the boss, in accordance with the scaling displacement of the swinging blade by handle operation, the distance of the swing vane, the outer contour of the fixed arm and the link from the shaft axis The frustoconical shape according to the above is adopted .
[0008]
In this device, the bosses connected to the oscillating blades via the links are displaced to a position adjacent to the fixed arm, so that the diameter of each oscillating blade is reduced to their minimum diameter posture under the action of the link mechanism. While it can be displaced, the boss is displaced to a position where it abuts against the stopper at the end of the shaft. The outer contour shape at the time of the diameter expansion displacement can be a frustoconical shape corresponding to the distance from the shaft axis of the respective ends of the fixed arm and the link.
[0009]
Therefore, when the annular body is engaged and supported by this device, the oscillating blades are inserted into the inner peripheral side of the oscillating blade under a reduced diameter displacement, and the oscillating blades are formed in a truncated cone shape. The support of the annular body is prepared by expanding the diameter and engaging, for example, the intermediate part of the extending direction of the blades, each of which is inclined, with the inner periphery of the annular body.
In such a state, when the suspension portion at the shaft end is lifted with, for example, an electric hoist, the annular body is positioned and supported on each swing blade and suspended.
[0010]
By the way, such support of the annular body by this device is performed under the diameter-enlarged state of the swing blade by the over-centered link, and the weight of the annular body on the swing blade is via the link and the boss. Since it is supported by the stopper, it is absolutely unnecessary to continuously apply an active force to the swing blade in order to maintain the support of the annular body.
[0011]
Further, the annular body is supported by preventing the annular body from falling off by a plurality of inclined oscillating blades, and the oscillating blade itself engages with the annular body such as a claw or a hook. Therefore, even if the annular body is soft, scratches are effectively prevented from occurring.
[0012]
In addition, each oscillating blade whose diameter is displaced in a frustoconical shape can support the annular body by any part between the small-diameter end and the large-diameter end, so with one device, An annular body having various inner diameters can be reliably supported.
[0013]
In this device, the bosses, it is necessary to Ru provided a handle for inputting a driving force on the shaft of it, the handle, the operator manually or by operating the mechanical input, a boss directly As compared with the case where the operation is performed manually, the expansion / contraction displacement of the swing blade can be performed more easily and reliably. This is more effective when a driving means for displacing the boss on the shaft, for example, a driving means comprising a cylinder or a screw mechanism and a rotational driving portion thereof is provided.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on the drawings.
FIG. 1 is a front view showing this embodiment in a diameter-reduced posture of the swing blade, and FIG. 2 is a view showing the swing blade in a diameter-expanded posture.
[0015]
In the figure, reference numeral 1 denotes a shaft having a cylindrical shape, for example. Here, an eye member 2 constituting a suspension portion is provided at one end of the shaft, and a radial direction is provided at an intermediate portion thereof at intervals in the circumferential direction. A plurality of fixed arms 3 projecting horizontally in the figure are provided outward.
In the figure, the upper ends of the swing blades 4 are hinged to the tips of three fixed arms 3 provided at equal intervals in the circumferential direction of the shaft 1.
[0016]
In the figure, on the lower side of the fixed arm 3, a boss 5 slidably displaced in the axial direction of the shaft 1 is fitted, and one end of three links 6 is hinged to the boss 5. Here, the other end of each link 6 protrudes radially outward from the fixed arm 3 in its horizontal posture, and the free end portion of the swing blade 4 is provided at each other end portion thereof. Are hinged.
[0017]
In addition, a stopper 7 of the boss 5 is provided at the other end of the shaft 1, that is, the lower end, and this stopper 7 is tilted in a direction in which the link 6 moves away from the fixed arm 3 with respect to its horizontal posture. The boss 5 is hit.
Incidentally, the link 6 protrudes in the radial direction longer than the fixed arm 3 even in this overcenter state.
[0018]
Further, here, the lower end of the handle 8 that is substantially U-shaped as a whole is connected to the boss 5, and the upper end of the handle 8 is connected to the guide sleeve 9 that slides on the shaft 1 above the fixed arm 3. To do.
[0019]
In the apparatus configured as described above, for example, by raising the boss 5 to a position where the boss 5 comes into contact with the fixed arm 3 by a handle operation by an operator's manual operation, each swinging blade 4 is connected to the link 6. Under the action, the diameter is reduced and displaced to be substantially parallel to the shaft 1, and as a whole, a cylindrical outer ring contour shape having a diameter a is defined.
[0020]
On the other hand, when the boss 5 is moved down to a position where it comes into contact with the stopper 7 by the handle operation, this is also shown in FIG. When such a diameter expansion displacement is caused and each link 6 is in an over-center state based on the above-mentioned contact, the outer contour shape thereof has a truncated cone shape with a bottom surface diameter of b.
[0021]
In the case where the molded green tire as an example of the annular body is suspended and supported with this device, each of the swinging blades 4 is in a reduced diameter posture as shown in FIG. The hollow portion of the green tire is entered, and the handle 8 is operated there to bring the swinging blade 4 into a diameter-expanded posture as shown in FIG. FIG. 3 is a perspective view showing an enlarged state of the swing blade 4 together with the green tire T.
[0022]
Thereafter, as shown in FIG. 4, the entire apparatus is lifted by the hook H engaged with the eye member 2 at the end of the shaft, so that each oscillating blade 4 has its inclined surface and the upper end of the blade 4. At an intermediate position between the lower ends, the green tire T is engaged with the bead portion B located on the upper side, and as a result, the green tire T is also suspended.
[0023]
In this case, since the tire weight acting on each blade 4 is supported by the stopper 7 via the link 6 and the boss 5, this apparatus provides a special output means for countering the tire weight. It is not necessary to provide it.
[0024]
Further, in this device, the blade 4 is engaged with various tires T having a hollow portion inner diameter in the range of (ba) at the portion between the upper end and the lower end of the swing blade 4 in the expanded diameter posture. Can be supported.
[0025]
In addition, here, the swing blade 4 is engaged with the lower surface side of the bead portion B so as to support the tire weight thereon, so that the tire weight is dispersedly supported by the plurality of swing blades 4. Thus, it is possible to effectively prevent the deformation of the bead portion B and, consequently, the tire T.
[0026]
If the present invention is described based on the drawings, the boss 5 can be moved up and down with respect to the fixed arm 3 by using an air cylinder or the like, and the boss 5 is directly or indirectly used as a female screw member. The boss 5 can be lifted and lowered by a screw mechanism using the shaft 1 as a male screw member and a motor or the like that rotationally drives one of them.
[0027]
【The invention's effect】
Thus, according to the present invention, one device can be applied to an annular body having various inner diameters, and the occurrence of scratches or the like on the annular body can be effectively prevented. In addition, an output means for supporting the weight of the annular body can be completely eliminated under a simple structure.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention in a reduced diameter posture of a swing blade.
FIG. 2 is a diagram showing an embodiment of the present invention in an expanded posture of a swing blade.
FIG. 3 is a perspective view showing an enlarged state of a swing blade in a green tire.
FIG. 4 is a perspective view showing an engaged state of a swing blade to a tire bead portion.
[Explanation of symbols]
1 Shaft 2 Eye member 3 Fixed arm 4 Oscillating blade 5 Boss 6 Link 7 Stopper 8 Handle 9 Guide sleeve a, b Diameter

Claims (4)

A device that engages and supports the inner periphery of the annular body;
The intermediate portion of the shaft provided with the gripping portion suspended on one end, a plurality of oscillating vanes spaced circumferentially, as well as hinged through the fixed arm, is connected to the boss slides on the shaft The free end of the oscillating blade is hinged to the tip of the link that protrudes radially outward from the fixed arm with respect to the shaft axis, and the link is away from the fixed arm at the other end of the shaft. A stopper that restrains the sliding of the boss while tilting to the
The lower end of a handle for inputting driving force on the shaft is connected to the boss, and the upper end of the handle is connected to a guide sleeve that slides on the shaft above the fixed arm. In accordance with the expansion / contraction displacement of the oscillating blade, the engagement support device for the annular body having the outer contour shape of the oscillating blade, the fixed arm, and the link as a frustoconical shape corresponding to the distance from the shaft axis .   2. An annular engagement support device according to claim 1, further comprising driving means for displacing the boss on the shaft. The ring-shaped engagement support device according to claim 2 , wherein the driving means is a cylinder. The annular engagement support device according to claim 2 , wherein the driving means is constituted by a screw mechanism and a rotation driving portion of a male screw member or a female screw member.

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