JPH03223615A - Cable-body inspecting apparatus - Google Patents

Abstract

PURPOSE:To make it possible to inspect the forming state of a groove in a cable body quickly, accurately and automatically by detecting the amount of moving displacement of a rotary moving body which is engaged with the groove at a specified reference position with respect to the running direction of the cable body and rotated following the drawing motion of the cable body. CONSTITUTION:A rotation guide 8 is uprightly provided on a base stage with a specified interval being kept. An inserting hole 8a through which cable body 1 passes is provided at the central part of the guide 8. A guide groove 8b for freely rotating rotary bodies 10 which fix a slide guide 9 on both sides is provided. The engaging piece of a rotary moving body 5 is engaged with each groove 2 of the cable body 1, and the moving body 5 is rotated following the drawing (moving) operation of the cable body 1. When a protruding part such as a projection is present in the groove 2 during the drawing operation of the cable body 1, the rotary moving body 5 is moved from a reference position because the moving body is pulled with the cable body 1 through a bearing member 5a. Therefore, the presence of the protruding part in the groove 2 can be inspected and confirmed simply and securely based on the presence or absence of the moving and displacing operations of the rotary moving body 5.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a filament having a groove formed on its outer circumferential surface in order to perform overhead wiring with an optical fiber inserted into the groove, and particularly relates to The present invention relates to a striated body inspection device that confirms and inspects the shape of the groove after manufacturing the striated body.

[Conventional technology]

Optical fibers for normal optical communications are generally wired overhead by being inserted and wired into grooves 101 spirally carved on the outer peripheral surface of a filament 100 as shown in FIG. There is.

This filament body lOO generally has a wire rod 102 made of a predetermined metal inserted through its center portion for applying tension, and is formed into a predetermined shape using a plastic resin material or the like.

[Problem to be solved]

By the way, in such a filament, the grooves carved on the outer peripheral surface may not be formed into a predetermined shape due to poor molding during molding of the filament, and protrusions may be formed in the grooves. be.

If an optical fiber is inserted or routed with such a molded defective part inside the groove of the filament left as it is, the protrusion will cause the optical fiber to pop out of the groove, making it impossible to install it correctly. There is a risk.

Therefore, after manufacture, the condition of grooves etc. on such filament bodies is checked over the entire length, but this inspection work is done visually by the operator, so The work is extremely troublesome and there is a risk that the test will be inaccurate if performed by an inexperienced person, so there is a desire to develop an effective test method.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional drawbacks, it is an object of the present invention to provide a striatal body inspection device that can quickly, accurately, and automatically check the state of grooves in the striatal body. It is.

[Means for Solving the Problems] That is, the present invention provides a method for checking and inspecting the condition of the grooves while taking the threaded member having a spiral groove carved into the outer circumferential surface by a taking means. In the inspection device, a rotary movable body that engages with the groove at a predetermined base position with respect to the running direction of the filament body and rotates according to the pulling operation of the filament body, and a convex in the groove of the filament body. a guide means for movably guiding the rotary movable body along the drawing direction of the filamentous body so that the rotary movable body moves and displaces its position according to the presence or absence of the part; and rotational movement along the guide means. The apparatus is equipped with a detection and recording means for detecting the amount of displacement of the body from the reference position and confirming and recording the groove condition of the filament based on this amount of displacement.

[Effect]

In order to confirm the presence or absence of a convex portion in the groove of the filamentous body using the filament inspection device of the present invention, the filament is moved in one direction while the filament is taken by the pulling means. However, when the rotary movable body is engaged with the groove of the filament, if the convex portion is not formed in the groove, the rotary movable body will only perform rotational movement without moving from a predetermined reference position. ing. When a convex part such as a protrusion is formed in the groove, the rotary moving body is stopped at the convex part, and the rotary movable body moves while being arched by the filament. Convex portions can be detected.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a striatal body inspection device according to the present invention. 3, a rotary moving body 5 that performs rotational and linear movements with respect to the guide means 4, and a convex part in the groove 2 of the filament body I from the movement of the rotary moving body 5. The detection and recording means 6 detects the presence of the convex portion and records the presence or absence of the convex portion.

In this embodiment, the filament 1 is manufactured in advance and wound around a take-up bobbin (flash), and is connected to a take-up bobbin 7 which is connected to a motor (not shown) serving as a take-up means and rotates at a constant speed. The facility will then carry out further inspections while the vehicle is being picked up.

The base 3 is immovably provided at a predetermined position between the take-up bobbin and the take-up bobbin 7.

The guide means 4 is composed of a pair of rotary guide bodies 8 arranged on the base 3 at a predetermined interval, and a slide guide body 9 rotatably installed between the rotary guide bodies 8. There is. The rotation guide body 8 has an insertion hole 8a opened in the center thereof so that the linear body 1 can be freely inserted therethrough, and a rotation body 1 that fixes the slide guide body 9 on both sides.
A guide groove 8b for freely rotating the 0 is provided. In addition, a hard ball 8C is arranged around the opening edge of the insertion hole 8a to allow the filament 1 to move smoothly. The slide guide body 9 is attached between the rotary bodies 10, and a convex portion is formed in the groove 2 of the filament body 1.
The rotary movable body 5 is engaged with this and moves while being dragged by the linear body 1.

The rotary moving body 5 is adapted to rotate following the taking-up operation (moving operation) of the filamentous body 1 while being locked in the valley groove 2 of the filamentous body 1, as shown in FIG. The number of engagers 12, which are formed in a substantially donut shape and are elastically biased toward the center by a spring 11, are attached to the center side in the same number as the grooves 2. The rotary movable body 5 can detect whether there is a convex part such as a protrusion in the groove 2 by the amount of displacement from the base ξ position, which will be explained later.
When there is a convex portion inside, the filament 1 is inserted through the bearing member 5a.
The rotary moving body moves from the reference position while being dragged by the protrusion, and when the convex portion is not present, the rotational movement is performed at the reference position. Then, this rotary moving body 5 moves a predetermined position on the base 1 2. (In order to set the mold position, that is, to set a distance from one of the rotation guide bodies 8 as the reference position, a tension spring 13 is installed between the rotation guide body 8 and the tension spring 13. The reference position is where the balance between the elastic force and the frictional force between the bearing member 5a and the slide guide body 9 matches.The rotation moving body 5 moves along the slide guide body 9 to the other rotation guide. When you move to body 8,
A microswitch 14 is installed on the other rotating body 10 in order to stop the pulling operation of the pulling means 7 and to notify the operator of the presence of the protrusion by operating a buzzer or the like.

The detection recording means 6 is for checking the presence or absence of a convex portion in the groove 2 of the filament body 1 over the entire length of the filament body 1. The spring 13 is attached to the convex portion in the groove 2 by a microprocessor or the like (not shown) based on a strain gauge 15 installed in the part and a signal output from the strain gauge 15 in accordance with the displacement operation of the one-rotation moving body 5. A detection part (flash) that detects the presence or absence.

It is composed of a recording section (flash) and the like that sequentially stores the state of the convex portion in the groove 2 corresponding to the position of the filament 1. Note that the detection and recording means of the present invention is not particularly limited to strain gauges; for example, a differential transformer or the like may be used to accurately detect the displacement operation of the rotary moving body.

〔effect〕

As explained above, according to the filament inspection device according to the present invention, there is a convex portion in the groove of the filament that is an obstacle to correctly inserting the optical fiber into the groove of the filament. Sometimes, the rotary movable body that engages with the groove gets caught in the convex part and cannot pass through the groove properly, and is dragged by the filament and moves in the same direction, so the movement and displacement of the rotary movable body The existence of a convex portion can be mechanically and easily and reliably detected and confirmed by the detection and recording means based on the presence or absence of the convex portion, and thereby the condition within the groove can be automatically inspected over the entire circumference of the filament. becomes possible.

[Brief explanation of drawings]

FIG. 1 is a side view of a main part showing the configuration of a striated body inspection device according to the present invention, FIG. 2 is a cross-sectional view taken along arrow I-1 in FIG. 1, and FIG. FIG. 4 is a plan view showing an engaged state of the rotary movable body that engages with the filamentous body, and a schematic perspective view showing the shape of the filament body inspected by the filament body inspection apparatus of the present invention. 2...Groove, 1...Striated body,...Take-up bobbin, 4...Rotating moving body,...Guide means,...Detection recording means. Transfer method) Fujikura Electric Wire Co., Ltd.

Claims (1)

[Claims] 1. A striated body (1) having a spiral groove (2) carved on its outer peripheral surface.
) for checking and inspecting the condition of the grooves (2) while taking the strip (1) with a pulling means (7), the stripe (1) having a predetermined reference position with respect to the running direction of the stripe (1). A rotary movable body (5) that engages with the groove (2) in the groove (2) and rotates as a result of the pulling operation of the filament body (1), and a groove (2) of the filament body (1).
) This rotary moving body (5)
a guide means (4) for movably guiding the rotary movable body (5) along the drawing direction of the filamentous body (1) so as to move and displace the position; It is characterized by comprising a detection and recording means (6) for detecting the amount of displacement from the reference position by the rotating moving body (5) and confirming and recording the groove condition of the filamentary body (1) from this amount of displacement. Striatum testing device.