Adjustment Device for Friction Adjustment Portion of Section

Patent metadata

Field	Value
Publication number	US-2020317463-A1
Application number	US-201816753256-A
Country	US
Kind code	A1
Filing date	Jun 29, 2018
Priority date	Oct 2, 2017
Publication date	Oct 8, 2020
Grant date	—

Abstract

In an adjustment device for a frictional force adjustment portion in a section, an inner circumferential portion of the section includes: a support hole formed from rolling bearings at both ends; a frictional force generation portion configured of a brake shoe, a coil spring, and a hexagon socket set screw and generates a frictional force against a rotary shaft inserted into the support hole; and a frictional force adjustment portion configured of the hexagon socket set screw and adjusts the frictional force in the frictional force generation portion. The adjustment member driving actuator adjusts the frictional force of the frictional force adjustment portion by rotating normally and reversely the adjustment member such that the frictional force in the frictional force generation portion of the section falls within a predetermined range.

First claim

1 . An adjustment device for a frictional force adjustment portion in a section, the section including an inner circumferential portion provided with a support hole, a frictional force generation portion that generates a frictional force against a rotary shaft inserted through the support hole, and the frictional force adjustment portion that adjusts the frictional force in the frictional force generation portion, and an outer circumferential portion provided with a wire winding portion around which a wire is wound, the adjustment device comprising:
a rotary shaft rotating actuator that rotates the rotary shaft; an adjustment member that is detachably coupled to the frictional force adjustment portion of the section supported by the rotary shaft and enables the frictional force adjustment portion to adjust the frictional force; an adjustment member driving actuator that drives the adjustment member in a direction of adjusting the frictional force; a support member that supports the adjustment member and the adjustment member driving actuator; a movement mechanism that moves the support member in a direction in which the support member is detachably coupled to the frictional force adjustment portion; a tilt tolerance mechanism that allows the support member to tilt due to rotation of the rotary shaft in a state where the adjustment member engages with the frictional force adjustment portion; a pressure detection portion that detects a pressure received from the support member at the tilting; a frictional force calculation unit that calculates the frictional force in the frictional force generation portion from the pressure detected by the pressure detection portion; and a frictional force control unit that controls the adjustment member driving actuator such that the frictional force calculated by the frictional force calculation unit falls within a predetermined range.

2 . The adjustment device for the frictional force adjustment portion of the section according to claim 1 , wherein
the movement mechanism includes a moving actuator and a movement member moved away from and close to the rotary shaft by the moving actuator, and the tilt tolerance mechanism includes a hinge mechanism that swingably couples the support member to the movement member.

3 . The adjustment device for the frictional force adjustment portion of the section according to claim 2 , wherein
a plurality of sections is provided on the rotary shaft, a plurality of the rotary shaft rotating actuators, a plurality of the adjustment members, a plurality of the adjustment member driving actuators, a plurality of the support members, a plurality of the pressure detection portions, a plurality of the frictional force calculation units, and a plurality of the frictional force control units are provided for the respective sections, the single moving actuator and the single movement member are provided, the moving actuator has an extendable rod, the movement member is attached to a tip of the rod, and a plurality of the support members are each swingably coupled to the movement member via the hinge mechanism.

4 . The adjustment device for frictional force adjustment portion of the section according to claim 1 , further comprising a positioning portion that supports the inner circumferential portion of the section supported by the rotary shaft such that the section is immovable in an axial direction of the rotary shaft.

5 . The adjustment device for the frictional force adjustment portion of the section according to claim 1 , wherein
the adjustment member driving actuator is an electric motor, and the adjustment device further comprises a coupling portion attached to an output shaft of the electric motor, the coupling portion being rotatable integrally with the output shaft and supporting the adjustment member such that the adjustment member is movable in a longitudinal direction of the adjustment member.

6 . The adjustment device for the frictional force adjustment portion of the section according to claim 1 , further comprising:
a rotation amount detection portion that detects a rotation amount of the rotary shaft; and a sampling unit that sample and stores the pressure detected by the pressure detection portion, wherein each time the rotation amount detected by the rotation amount detection portion becomes a predetermined rotation amount, the frictional force calculation unit calculates the frictional force based on an average value of the pressure sampled by the sampling unit for a period corresponding to the rotation amount.

7 . The adjustment device for the frictional force adjustment portion of the section according to claim 6 , wherein
the predetermined rotation amount is at least one rotation.

8 . The adjustment device for frictional force adjustment portion of the section according to claim 3 , further comprising a positioning portion that supports the inner circumferential portion of the section supported by the rotary shaft such that the section is immovable in an axial direction of the rotary shaft.

9 . The adjustment device for the frictional force adjustment portion of the section according to claim 8 , wherein
the adjustment member driving actuator is an electric motor, and the adjustment device further comprises a coupling portion attached to an output shaft of the electric motor, the coupling portion being rotatable integrally with the output shaft and supporting the adjustment member such that the adjustment member is movable in a longitudinal direction of the adjustment member.

10 . The adjustment device for the frictional force adjustment portion of the section according to claim 9 , further comprising:
a rotation amount detection portion that detects a rotation amount of the rotary shaft; and a sampling unit that sample and stores the pressure detected by the pressure detection portion, wherein each time the rotation amount detected by the rotation amount detection portion becomes a predetermined rotation amount, the frictional force calculation unit calculates the frictional force based on an average value of the pressure sampled by the sampling unit for a period corresponding to the rotation amount.

11 . The adjustment device for the frictional force adjustment portion of the section according to claim 10 , wherein
the predetermined rotation amount is at least one rotation.

Assignees

• Yokohama Rubber Co Ltd

Inventors

• Onodera Akira
• Saito Takayuki
• Ueda Kenji
• Ebisawa Masahiro

Classifications

• B65H59/04 Primary

  by devices acting on package or support · CPC title

• B65H2701/36

  Wires · CPC title

• B29C70/32

  on a rotating mould, former or core · CPC title

• B29C70/543

  Fixing the position or configuration of fibrous reinforcements before or during moulding (for non-woven fabrics D04H3/08) · CPC title

• B29C70/545

  Perforating, cutting or machining during or after moulding · CPC title