JPS61127337A - Belt conveyor device - Google Patents

Abstract

PURPOSE:To constitute the titled device so that neither turning force is generated on a cam ring nor pressing force of a segment is weakened as the device is turned into an automatic locking state even if shaping force is applied to the device, by forming each of inward end parts of a cam ring groove into a state of a circular arc centering round the center of the cam ring. CONSTITUTION:A cam ring 8 is moved relatively to a ring 6 by a driving device of a cylinder 15, through a rotation of which a block 4 and segment 1 are expanded or contracted in a radialward direction through action of a cam roller 11 guided to a cam ring groove 8a, in a belt conveyor device of a radial tire. A distance from the center of the segment 1 can be adjusted by revolving a screw rod. In addition to the above, as the cam roller 11 is come into contact with an inward end groove part of a cam ring groove 8a at the time of a reduction, the device is locked automatically and it does not happen that pressing force of the segment 1 is weakened by performing return rotation of the cam ring 8 even if a shaping reaction force is applied to the device.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a belt conveying device for radial tires.

[Conventional technology]

Recently, as tires have become wider and flatter, a shaving method has been used in which the adhesion of the shoulder part A is improved without deforming the breaker layer.The shaving method is used to narrow the bead 1 and press the shoulder part A shown in Fig. 3 with internal pressure. ing. For this reason, the transfer needs to be strong enough to keep the breaker layer flat so as not to deform it, and to prevent the segment 1 from moving in the radial direction due to the pressure of the crimping, which is difficult to do with conventional transfers. It has become.

[Problem to be solved by the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a transfer ring that overcomes the drawbacks of conventional devices, can sufficiently withstand shaving forces, can accommodate changes in tire size (tire outer diameter), and has a simple structure.

[Means for solving problems]

A cam ring auto-lock mechanism is provided for the cam ring 8, in which each segment 1 is formed in an arc shape centered on the center of the ring 8, and an adjustment mechanism for changing the reduction diameter is provided on the segment side. This is its characteristic.

[Effect]

Since auto-lock portions are provided in series at each inner end of the cam ring groove 8a, if the cam ring 8 is sufficiently rotated to the final position, the auto-lock mechanism will work and the cam ring will loosen due to the shaving force. Automatically prevent segments from expanding due to rotation. Furthermore, it is possible to change the reduction diameter on each segment side.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. The present invention mainly focuses on the segment side and the transformer 7.
The ring side is configured.

The segment side is the tread 2 of the tire as shown in Figure 2.
A segment l that supports the segment 1 from the outer periphery, a support 2 that also attaches the segment 1, a threaded rod 3 screwed into a female thread in the shaft part of the support 2, and a support 2 that supports the segment 1 from the outer circumference.
The block 4 that is fitted into the block 4 and the diblock 4 that is inserted into the delt 10
the presser cover 5 fixed to the block 4, the cam roller 11 fitted into the cam ring 8, the cam roller shaft 12 fitted into the cam roller 11, the pin 13 fixing the cam roller shaft 12 to the block 4, and the rotation stopper screw of the threaded rod 3. 9 and yoshi are made up.

As shown in FIG. 1, the transfer ring side consists of an inner end groove that can be pulled, and a holding ring 14 in the direction of the cam ring 8 and hook link 6.

Next, the operation of the above embodiment will be explained.

The cam ring 8 is moved by a driving device such as a cylinder 15, so that the jib block 4 and the segment 1 are expanded and contracted in the radial direction. The distance of the segment 1 from the ring center can be adjusted by rotating the threaded rod 3. Furthermore, since the cam roller 11 is in contact with the inner end groove portion of the cam ring groove 8& during contraction, even if the cam roller 11 is automatically locked and receives a shaving reaction force, the cam ring 8&
The pressing force on segment 1 will not loosen due to the return rotation.

〔Effect of the invention〕

As mentioned above, in the belt conveying device of the present invention, the inner end groove of the cam ring is formed in an arc shape, so even if it receives shaving force, it will auto-lock, no rotational force will be generated in the cam ring, and the pressing force on segment 1 will be relaxed. Therefore, the drive device such as the cylinder to be driven can be made smaller.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of the transfer ring, (,) is a normal view, (a) is a front view, (b) is a top view of (a), Figure 3 is an explanatory diagram of shaving a wide flat tire, and W4 diagram is FIG. 3 is an explanatory diagram of a conventional shaving shape. 1...Segment, 8...Cam ring, 8a...
Cam ring groove, 21...tread breaker layer. Figure 2 Figure 3 Figure 41i Procedural amendment (spontaneous) December 7, 1980 Manabu Shiga, Commissioner of the Patent Office 1, Indication of the case Patent application 1982-249751, Name of the invention Belt conveying device 3 , Relationship with the amended person case Patent applicant address 2-5-1 Marunouchi, Chiyoda-ku, Tokyo Name (6
20) Mitsubishi Heavy Industries, Ltd. 4, sub-agent 164 Phone: 03 (381) 46625
, Date of amendment order (voluntary) Figure 1

Claims (1)

[Claims] The inner end of the expansion/contraction cam ring groove of the segment that presses the tread breaker layer for secondary forming of the radial tire,
A belt conveying device characterized in that it is formed in an arc shape centered on the center of a cam ring and passing through the ends thereof.