Dual-projection image-based roller measurement mechanism

Abstract

A dual-projection image roller measurement mechanism comprises a measurement platform, a movable frame, and a measurement system. The measurement platform includes a horizontal surface, a base, and a track for mounting the roller to be measured. The movable frame, slidably positioned between the tracks, includes a base plate, first and second rods, and a crossbar, surrounding and covering the roller. The measurement system uses first and second measuring instruments mounted on the first and second rods and connected to a main measurement unit. The first and second measuring instruments consist of a transmitter and a receiver, forming a dual-projection space that partially overlaps with the edge of the roller. By moving the movable frame along the track and analyzing the images received by the main measurement unit, the diameter variation, external dimensions, and roundness of the roller can be measured, making it suitable for high-precision measurement of large rollers.

Claims

1. A dual-projection image type roller measuring mechanism, comprising: a measuring platform having a horizontal platform surface, two seats being mounted on the horizontal platform surface, a roller being mounted between the two seats, and two tracks being fixed to the horizontal platform surface, the two tracks being arranged parallel to the roller; a movable frame comprising a base plate, a first rod, a second rod, and a crossbar, the base plate being slidably disposed between the two tracks and perpendicular to the two tracks, the first rod and the second rod being erected on the base plate, the first rod and the second rod being located on opposite sides of the roller, and the crossbar connecting the first rod and the second rod, and the base plate, the first rod, and the second rod being mounted on opposite sides of the roller; and the crossbar connecting the first rod and the second rod. The system comprises a first measuring instrument, a second measuring instrument, and a measuring host. The first measuring instrument is fixed to the first rod, and the second measuring instrument is fixed to the second rod. Both the first and second measuring instruments include a transmitter and a receiver, and a projection space is formed between the transmitter and the receiver. The two side edges of the roller partially overlap with the two projection spaces. The measuring host is connected to and receives the images of the roller projected by the first and second measuring instruments, and moves along the track with the moving frame to measure the diameter change and external dimensions of the roller.

2. The dual-projection image roller measuring mechanism as described in claim 1, wherein a fixed base is provided at one end of the measuring platform, and a driver is installed at the fixed base. The driver is connected to one end of the roller, and the driver drives the roller to rotate at a constant speed, so that the measuring system receives dual-projection images and knows the roundness of the roller.

3. The dual-projection image roller measuring mechanism as described in claim 2, wherein a rotary joint is installed at the other end of the measuring platform, the rotary joint is connected to one end of the roller via a pipe connector, and heating fluid is injected into the roller through the pipe connector to simulate the working temperature of the roller.

4. The dual-projection image roller measuring mechanism as described in claim 2, wherein a connecting assembly is provided between the roller and the driver, and the connecting assembly includes two universal joints and a telescopic extension rod.

5. The dual-projection image roller measuring mechanism as described in claim 1, wherein the first rod and the second rod are both locked to the base plate by an adjusting seat, the adjusting seat has a plurality of elliptical holes, the base plate has a plurality of screw holes, and the adjusting seat is locked to any of the screw holes by a plurality of bolts passing through the elliptical holes, thereby adjusting the distance between the first rod and the second rod.

6. The dual-projection image roller measuring mechanism as described in claim 5, wherein the first rod and the second rod are each locked with a support member at the end away from the base plate, and the crossbar is locked to the support member.

7. The dual-projection image roller measuring mechanism as described in claim 1, wherein the measuring platform is equipped with a fine-tuning device above the base, the fine-tuning device including a fixed plate and a displacement plate, the fixed plate being fixed to the base and the displacement plate being placed on the fixed plate, and both ends of the roller being provided with a pivot seat, which is fixed to the displacement plate by the pivot seat, both ends of the fixed plate having a protruding block, and a translation screw being locked through the block, the end of the translation screw pressing against the outside of the displacement plate, the pivot seat being adjusted to a horizontal position by fine-tuning the two translation screws, and at least one strip hole being opened on both sides of the pivot seat of the displacement plate, a fixed screw being passed through the strip hole, and the fixed screw being locked to the fixed plate, the displacement plate being fixed when the fixed screw is locked.

8. The dual-projection image roller measuring mechanism as described in claim 7, wherein the displacement plate is locked with a plurality of lifting screws on its upper surface, and the ends of the lifting screws press against the fixing plate, thereby adjusting the height position of the pivot seat by locking in the lifting screws, and the lifting screws are screwed with a positioning nut.

9. The dual-projection image roller measuring mechanism as claimed in claim 1, wherein a length ruler is fixed on the horizontal platform of the measuring platform, and an indicator needle is fixed on the base plate of the movable frame, the indicator needle pointing to the length ruler to indicate the manual displacement distance of the movable frame.

10. The dual-projection image roller measuring mechanism as claimed in claim 1, wherein the measuring platform is fixed with at least one rack on the horizontal platform surface, and the moving frame is fixed with at least one motor at the base plate, the motor engaging with the rack to drive the moving frame to form an automatic displacement.

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