JPH0413611Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to the structure of an apparatus that continuously and precisely measures the length of a irregularly shaped strip material that is formed into an L shape or the like.

<Prior art and its problems> Conventionally, as a method for continuously measuring the length of a strip that has been rolled into a flat strip, the running strip is generally held between a pair of rollers, and one of the rollers is It is electrically measured by detecting the rotational speed of the motor using a rotary encoder, etc. However, for example, when the measuring roller is in contact with two sides of the chevron of an irregularly shaped strip processed into an L shape, the strip may tilt in the direction of travel while the strip is moving or when repeatedly moving and stopping. If the contact position of the measuring roller changes or one of the contacts slips, the measurement error increases.

The purpose of this invention is to solve the above-mentioned problems and provide a length measuring device for irregularly shaped strips that can accurately measure the length of strips.

<Means for solving the problem> In order to achieve the above object, this invention detects the rotation speed of one of a pair of rollers that clamps a running irregular-shaped strip, thereby determining the length of the strip. A measuring roller having a groove on its outer peripheral surface that contacts the strip at two points; a fixed roller facing the measuring roller and having a groove into which the strip fits; The gist includes a spring that presses both ends of the rotating shaft of the measuring roller in the direction of the rotating shaft of the fixed roller, and a slide bearing that holds the measuring roller slidably in the axial direction of the rotating shaft. It is something.

<Example> An example of the present invention will be described with reference to the drawings. FIG. 1 is a front longitudinal sectional view of the device of the present invention, and FIG.
The figure is a side view thereof.

A fixed roller 2 that rotates while supporting the lower surface of a strip 1 that is machined into an L shape and runs approximately horizontally has a bearing 5 attached to a horizontal shaft 4 that has both ends fixed to a frame 3 that is erected on a mount. It is pivotally supported through. Further, a measuring roller 6 is disposed above the fixed roller 2 and at a position opposite to the fixed roller 2 . This measuring roller 6 is held by a horizontal rotating shaft 8 via a slide bearing 7, and is configured to be able to slide slightly in the axial direction of the rotating shaft 8 while rotating simultaneously with the rotating shaft 8. Further, both ends of the rotating shaft 8 are pivotally connected to a bearing 10 via a bearing 9. Bearing 1
0 is supported in the horizontal direction by a guide 11 attached to a frame 3, and both ends of the measuring roller 6 are connected to the rotating shaft 4 of the fixed roller 2 by a spring 12 and a holding bolt 13 arranged above the bearing 10. It is pressed and biased toward the target. Further, the outer peripheral surface of the fixed roller 2 is provided with a groove 2a into which the lower surface of the strip 1 fits, and the outer peripheral surface of the measuring roller 6 is provided with a chevron on the upper surface of the strip 1 at two points on both sides. A contacting groove 6a is provided. One end of the rotating shaft 8 is connected to the detector 1 via a coupling 14.
It is attached to 5. Therefore, as the strip 1 moves, the fixed roller 2 and measuring roller 6 that sandwich the strip rotate, and the detector 15 detects the number of rotations to measure the length of the strip. . Further, the coupling ring 14 is a universal joint so that there is no problem even if the rotating shaft 8 moves slightly in the vertical and horizontal directions.

<Effects of the invention> In this invention, the measuring roller 6 that comes into contact with two points on the surface of the irregularly shaped strip 1 to be measured presses the strip 1 toward the opposing fixed roller 2 with the spring 12, and the measuring roller 6 is By making it slidable in the direction of the central axis of the rotating shaft 8, even if the strip 1 moves and stops frequently, or even if it moves slightly in the direction of the central axis of the rotating shaft, the measuring roller 6 will be able to move the strip. 1, the length of the strip 1 can be accurately measured and a remarkable effect can be obtained in practical use.

[Brief explanation of the drawing]

1 and 2 are a front longitudinal sectional view and a side view, respectively, of the device of the present invention. DESCRIPTION OF SYMBOLS 1... Strip material, 2... Fixed roller, 6... Measuring roller, 8... Rotating shaft, 7... Slide bearing, 12... Spring, 15... Detector.

Claims (1)

[Scope of utility model registration request] In a device that continuously measures the length of a running irregular-shaped strip by detecting the rotation speed of one of a pair of rollers that clamp the irregular-shaped strip, the length of the strip is
A measuring roller having grooves on its outer peripheral surface that abut at points, a fixed roller facing the measuring roller and having grooves into which the strip fits, and a rotating shaft of the fixed roller having both ends of the rotating shaft of the measuring roller. 1. An apparatus for measuring the length of an irregularly shaped strip, comprising: a spring that presses the measuring roller in the direction of the rotating shaft; and a slide bearing that holds the measuring roller slidably in the axial direction of its rotating shaft.