JPS5833295Y2 - Removable fixing devices such as bead forming rings for bead forming machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detachable fixing device such as a bead former ring of a bead forming machine in a tire forming apparatus.

Conventionally, when fixing a rotatable member to be attached, such as a bead former ring of a bead forming machine, to a rotatable mounting shaft, the bead former is attached as shown in FIGS. 6 and 7.
The ring 61 has its keyway 62 and the keyway 64 of the mounting shaft 63.
press the presser block 6.
It was fixed by screwing a bolt 68 into a bolt hole 67 of the mounting shaft 63 through a bolt 68.

However, in this prior art, when the key 65 is tightly fitted into the key grooves 62 and 64, the bead former
The key 65 is difficult to remove when replacing or removing the ring 61, and therefore, it is difficult to attach or detach the bead former ring 61 itself.On the other hand, if the key 65 is made to have play to make it easier to remove, the bead former There is a play between the ring 61 and the mounting shaft 63, making it impossible to stop the bead former ring 61 at a fixed point, and as a result, the bead overlap amount cannot be made uniform.

Moreover, in this prior art, since it is necessary to screw the bolt 68 each time, the bead former ring 6
It was even more troublesome to attach and detach the item 1, making it inefficient.

The present invention was obtained as a result of intensive research to eliminate the drawbacks of the above-mentioned conventional technology.It is possible to securely fix a mounted member such as a bead former ring to a rotatable mounting shaft, and it can be attached and detached with one touch. The object of the present invention is to provide a detachable fixing device for a bead former ring or the like of a bead forming machine that can be stopped at a fixed point.

In order to achieve this object, the present invention provides a flange 9 at the middle part of the rotatable mounting shaft 7, and the flange 9 of the flange 9 on the side of the attached member 11 such as a bead former ring, and the flange 9 of the attached member 11. Tapered protrusions 10 or grooves 12 that engage with each other are provided on the sides, and axial grooves 13 are provided at intervals in the circumferential direction on the outer periphery of the mounting shaft 7 on the mounting side of the mounted member 11. A pressing rod 14 having a tapered surface 17 at its tip for pressing the mounted member 11 toward the flange 9 is inserted into the groove 13 via a spring 16 so that its outer surface can protrude and enter from the outer peripheral surface of the mounting shaft 7. It is characterized by being attached to a shaft, and can be applied not only to bead forming rings in tire molding equipment, but also to various other rotating bodies, especially when there are many machines that can be attached and detached, or when fixing without play is required. It is extremely useful when

The present invention will be further described below with reference to the accompanying drawings.

The embodiment shown in FIGS. 1 to 5 shows a case where the present invention is applied to a detachable fixing of a member to be attached to a bead forming machine in a tire forming apparatus, that is, a bead former ring.

A main body 1 of the bead forming machine is provided with a rotating shaft 2 , which is supported by a bearing 3 and rotated and driven by a motor 4 .

A flange 5 is provided at the tip of the rotating shaft 2, and the flange 5 is fixed to a flange 8 of a rotatable mounting shaft 7 of a ring mounting mechanism 6 with bolts or the like.

A circular flange 9 is formed approximately in the middle of the mounting shaft 7, and a protrusion 10 having a tapered surface 10a is provided on the tip side of the flange 9, that is, on the bead former ring mounting side (FIG. 3). .

As will be described later, this protrusion 10 engages with the groove 12 of the bead former ring 11 to transmit rotational torque, and the tapered surface 10a is the tapered surface 12a of the groove 12.
They are designed to rub together and come into contact with each other.

Therefore, the groove 12 has a slightly smaller dimension than the protrusion 10, and there is some gap between the tip of the protrusion 10 and the innermost part of the groove 12, but there is no gap between the tapered surfaces 10a and 12a. They are in close contact, ensuring reliable rotational torque transmission without any play, and at the same time, because they are tapered surfaces, they can be separated smoothly.

Reference numeral 11a indicates the attachment mechanism 6 for attaching the bead former ring 11.
This is an insertion hole formed in the center of the ring 11 for fitting onto the mounting shaft 7 of the ring 11.

In addition, contrary to the case shown in the drawings, it is also possible to form a groove on the flange 9 side and a projection on the bead former ring 11 side so that these projections and grooves engage with each other. Of course, two or more sets of each may be formed.

A plurality of grooves 13 are provided in the axial direction at intervals in the circumferential direction on the outer periphery of the distal end side of the mounting shaft 7 of the ring mounting mechanism 6, that is, on the mounting side of the bead former ring 11. The pressing rod 14 is pressed by a spring 16 from the inside of the mounting shaft 7, and due to this elastic pressing force, it normally protrudes outward from the outer peripheral surface of the mounting shaft 7, and the bead former The ring 11 is fixed to the mounting shaft 7.

The ring pressing rod 14 has a tapered surface 1 on the opposite side from the pin 15.
7 is formed and is in contact with the corresponding tapered surface of the bead former ring 11.

In this embodiment, an extraction ring 18 is used to extract the attached member, that is, the bead former ring 11 from the mounting shaft 7, and this extraction ring 18 is connected to the ring attachment mechanism 6 as shown in FIG. a hole 19 for fitting into the mounting shaft 7, a flange 20 provided to fit into the bead former ring 11 in a spigot shape,
and a magnet 21 for preventing the extraction ring 18 from falling off the bead former ring 11 when the extraction ring 18 is extracted from the ring attachment mechanism 6 together with the bead former ring 11. .

The diameter of the hole 19 of the extraction ring 18 is slightly larger than that of the mounting shaft 7, and when the extraction ring 18 is fitted onto the mounting shaft 7, the pressing rod 14 retracts to almost the same plane as the outer peripheral surface of the mounting shaft 7. The extraction ring 18 and bead former
The ring 11 can be easily removed from the mounting shaft 7.

Note that the magnet 21 may be omitted depending on the case.

Since the present invention is configured as described above, when fitting the mounted member 11 such as a bead former ring to the mounting shaft 7,
The mounted member 11 can be easily mounted by simply inserting it from the mounting side of the mounting shaft 7 until its flange side contacts the flange 9. When the mounting is complete, the pressing rod 14 is elastically moved by the spring 16. When pushed, it automatically protrudes outward beyond the outer peripheral surface of the mounting shaft 7, and the tapered surface 17 at the tip of the pressing rod 14 can reliably prevent the attached member 11, such as a bead former ring, from being pulled out. On the other hand, the protrusion 10 provided on the flange 9 of the mounting shaft 7 fits into the concave groove 12 of the attached member 11 such as a bead former ring, and due to the sliding contact between the tapered surfaces 12a and 102, the bead The member 11 to be attached, such as a former ring, and the flange 9 can be firmly fixed in close contact with each other without any play, and rotational torque can be reliably transmitted from the flange 9 to the member 11, such as a bead former ring, to be attached.

As explained above, according to the present invention, it is possible to reliably fix the mounting shaft and the member to be mounted, such as a bead former ring, without causing play.

[Brief explanation of drawings]

Fig. 1 is an overall view showing an embodiment of the device according to the present invention, Fig. 2 is a side view of the bead former ring, Fig. 3 is a partial sectional view of the attachment mechanism of the bead former ring, and Fig. 4 is a ring A partial sectional view of the holding part, FIG. 5 is a side view of FIG. 4,
FIG. 6 and FIG. 1 are explanatory diagrams showing the prior art. 7...Mounting shaft, 9...Flange, 10
...Protrusion, 10a...Tapered surface, 11
・・・・・・Bead former ring, etc. attachment member, 1
2...concave groove, 12a...tapered surface, 1
3...Groove, 14...Press rod, 16...
...Spring, 17...Tapered surface.

Claims (1)

[Scope of utility model registration request] A flange 9 is provided in the middle of the rotatable mounting shaft 7, and a tapered protrusion 10 or a tapered protrusion 10 or A concave groove 12 is provided, and axial grooves 13 are provided at intervals in the circumferential direction on the outer periphery of the mounting shaft 7 on the mounting side of the mounted member 11, and within this groove 13, the mounted member is disposed at the tip thereof. 11 to flange 9
A pressing rod 14 formed with a tapered surface 17 that presses to the side,
A removable fixing device for a bead former ring of a bead forming machine, etc., characterized in that the outer surface of the attachment shaft 7 is fixed via a spring 16 so that it can protrude and enter from the outer circumferential surface of the mounting shaft 7.