JP2003050122A - Measuring method for length of pass-line of linear body manufacturing line and malfunction inspecting method using this - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a length measuring method for a pass line, by which the length of a pass line between arbitrary two points on the input side and the output side of an accumulator can be measure precisely, even if the accumulator is in the middle of storing the line, or the diameter of a linear substance is changed. SOLUTION: This method uses an accumulator 9, which has a stationary-side pulley 20 and a moving-side pulley 21, and is a method for measuring the length of a pass line between arbitrary two points being on the input side and the output side of the accumulator 9. A length L0 from one point on the input side up to the accumulator 9, and a length L3 from the accumulator 9 up to one point on the output side are found. Wound line length LA1 , LA2 , which are wound on both stationary-side and moving-side pulleys 20, 21, are calculated from the diameters of the stationary-side and moving-side pulleys 20, 21 and the diameter of a linear substance 2, the length LC of the linear substance 2 between both pulleys 20, 21 is calculated from the distance between the shaft centers of both pulleys 20, 21, a total length LA wound on the accumulator 9 is calculated, and these L0 , L3 , and LA are added.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a path line length measuring method between any two points on an inlet side and an outlet side of an accumulator in a linear body manufacturing line equipped with an accumulator, and an abnormality inspection method using the same. It is a thing.

[0002]

2. Description of the Related Art As an example of a linear body production line, FIG. 3 shows a cable extrusion coating production line.

As shown in the figure, a linear body 2 such as a conductor sent from a sending device 1 is stored in an accumulator 3 for a sending pass line.

After that, it is introduced into the extrusion molding machine 4 and covered with an insulating material, passes through a cooling water tank 5 and a printing device 6, passes through an in-line abnormality detecting means 7 including a spark tester, a hump detector, etc. Be taken over.

After that, it passes through the accumulator 9 for the winding pass line and is wound by the winding device 10.

As shown in the figure, such a linear body production line is generally provided with accumulators 3 and 9 for the purpose of improving productivity. That is, when the drum of the delivery device 1 or the winding device 10 is replaced, the accumulator 3 for the delivery pass line or the take-up pass line is used.
The line 9 stores the linear body 2 so that the drum can be continuously replaced without stopping the line.

The accumulator 9 for the take-up path line will be described as an example. The accumulator 9 includes a fixed pulley 20 and a movable pulley 21, and the linear member 2 is wound around the outer circumferences of both pulleys 20 and 21. To be turned. Moving pulley 2
1 moves from the normal position A closest to the fixed pulley 20 to the right side in the drawing to increase the distance between the fixed pulley 20 and the fixed pulley 20 so that the linear body 2 can be stored.

During normal operation, that is, when the drum of the winding device 10 is not replaced, the moving pulley 21 is fixed at the normal position A closest to the fixed pulley 20 and enters the accumulator 9. 2 and the length of the linear body 2 discharged from the accumulator 9 become equal.

On the other hand, when replacing the drum of the winding device 10,
The moving pulley 21 is moved to the right in the figure so as to be spaced apart from the fixed pulley 20, and thereby,
The length of the linear body 2 wound in the accumulator 9 becomes long. While the moving pulley 21 is moving, the length of the linear body 2 entering the accumulator 9 is absorbed by the movement of the moving pulley 21, so the linear body 2 is not discharged from the outlet side. Therefore, the drum of the winding device 10 can be replaced while the moving pulley 21 is moving.

By the way, during the operation of such a linear body manufacturing line, the joint portion and the abnormal portion of the linear body 2 are detected by the in-line abnormality detecting means 7. The abnormal portion is in front of the winding device 10. It is necessary to cut and remove with a mark, or to mark after taking up once and removing or repairing an abnormal part in the rewinding process.

Therefore, conventionally, for example, when an irregularity in the appearance of the cable occurs and the bump detector of the inline abnormality detecting means 7 operates, the inline abnormality detection is performed when the moving pulley 21 of the accumulator 9 is in the normal position A. Assuming that the path line length of the linear body 2 from the means 7 to the winding device 10 is Le, the linear body measured by a measuring counter (not shown) provided in front of the winding device 10. Two
When the moving distance of the vehicle reaches Le, the driver winds the winding device 1
The measures such as stopping and stopping 0 and confirming / removing the abnormal part and marking are performed.

[0012]

However, in such a conventional method, there is no problem when the moving pulley 21 of the accumulator 9 is located at the normal position A.
When the drum of the winding device 10 is being replaced, that is, when the moving pulley 21 of the accumulator 9 is moving to store the linear body 2, the linear body 2 from the in-line abnormality detecting means 7 to the winding device 10 is being stored. There is a problem that the abnormal portion cannot be confirmed in front of the winding device 10 because the length of the pass line changes.

That is, the path line length Le1 from the in-line abnormality detecting means 7 to the winding device 10 when the moving pulley 21 of the accumulator 9 is moving is Le1.
= Le + α (α: storage line length of the linear body 2 by the accumulator 9 for the winding pass line), it becomes impossible to specify the abnormal portion.

When the diameter of the linear body 2 changes greatly, the winding length of the linear body 2 wound around the pulleys 20 and 21 of the accumulator 9 changes, and the abnormal portion cannot be identified. There was also a problem. That is, the pass line length Le2 of the linear body 2 from the in-line abnormality detection means 7 to the winding device 10 when the diameter of the linear body 2 changes greatly is L
e2 = Le + β (β: change in winding length due to change in diameter of linear body 2).

Further, when the moving pulley 21 of the accumulator 9 is moving and the diameter of the linear body 2 changes significantly, the linear body 2 from the in-line abnormality detecting means 7 to the winding device 10 is changed. The pass line length Le3 of is Le3
= Le + α + β.

As described above, when the accumulator 9 is stored and when the diameter of the linear body 2 changes, one point on the inlet side (inline abnormality detecting means 7) of the accumulator 9 to one point on the outlet side (winding). Since the path line length to the device 10) varies, the positions of the abnormal portion and the joint portion are unclear, and there is a problem that the abnormal portion cannot be removed or marked.

From the above, reworking work in the rewinding process and work for finding an abnormal portion by the abnormality detecting means are required again, which may reduce the productivity or cause a product accident such as product mixture in the abnormal portion. There was a problem of increase. In addition, the fact that the driver has to visually check the joints and the like and manually mark them has been a hindrance to automation, which has been a cause of reduced productivity. Furthermore,
If the abnormal part cannot be visually determined, there is also a problem that the abnormal part cannot be found even if the driver monitors it.

Therefore, an object of the present invention is to solve the above-mentioned problems, and in the linear body on the inlet side and the outlet side of the accumulator even in the storage line of the accumulator or even when the diameter of the linear body changes. An object of the present invention is to provide a path line length measuring method capable of accurately measuring the length of a path line between arbitrary two points.

[0019]

In order to achieve the above-mentioned object, the present invention has a stationary pulley and a movable pulley around which a linear member is wound, and the movable pulley moves and the stationary pulley and In a linear body manufacturing line equipped with an accumulator that stores the linear body by increasing the distance between, the path line length measuring method between any two points in the linear body on the inlet side and the outlet side of the accumulator. In, the length L _{0 of the} linear body from one point on the inlet side of the accumulator to the accumulator and the length L ₃ of the linear body from the one point on the outlet side to the accumulator are determined, and the fixed side of the accumulator is determined. Based on the diameters of the pulley and the moving pulley, the diameter of the linear body, and the number of windings of the linear body, the winding length L of the linear body wound around the fixed pulley and the moving pulley in an arc shape. _A1, L _A2, respectively Out and wound on the accumulator to calculate the length L _C of the linear body extending between two pulleys and a number of turns of the axial distance between the linear body and the mobile pulley and the fixed pulley The total length L _A of the linear body is calculated, and L ₀ , L ₃ , and L _A are added to obtain the length of the linear body between any two points.

According to this method, the path line length between any two points in the linear body on the inlet side and the outlet side of the accumulator is always accurate regardless of the storage line of the accumulator or the diameter of the linear body. Can be measured.

Further, the fixed side pulley and the moving side pulley of the accumulator are made to have the same diameter, and the diameter is D
₁ , the diameter of the linear body is d, the number of windings of the linear body is N,
The lengths L _A1 and L _A2 of the linear body wound in an arc shape around the fixed pulley and the moving pulley are L _A1 = L _A2 = (πN (D
It may be calculated from ₁ + d)) / 2.

From the distance between the shaft centers of both pulleys when the moving pulley comes closest to the fixed pulley and the number of windings of the linear body, the fixed pulley and the moving pulley closest to it are determined. The length L _C1 of the linear body extending through the _space is calculated, and the distance between the axes of the moving side pulley when it is closest to the fixed side pulley and the moving side pulley during length measurement, and the winding of the linear body. From the number of times, the length L _C2 of the linear body extending between the moving side pulley closest to the fixed side pulley and the moving side pulley at the time of length measurement is calculated, and the linear body extending between both pulleys is calculated. The length L _C may be obtained.

The moving pulley of the accumulator is attached to a belt wound around a driving pulley,
By the rotation of the drive pulley, the drive pulley is moved to a position spaced from the position closest to the fixed pulley, the diameter of the drive pulley is D ₃ , the number of rotations is n, and the number of windings of the linear body is N, The length L _C2 of the linear body extending between the moving pulley closest to the fixed pulley and the moving pulley during length measurement may be calculated from L _C2 = 2πD ₃ Nn. .

Further, according to the present invention, there is provided a fixed pulley and a moving pulley around which the linear member is wound, and the movable pulley is moved to increase the distance between the fixed pulley and the fixed pulley. An accumulator for storing the wire, an inspection means provided on the inlet side of the accumulator, for detecting an abnormality of the linear body, and a processing device provided on the outlet side of the accumulator for processing an abnormal portion of the linear body, In a method of inspecting an abnormality of a linear body in a linear body production line including a measuring unit that measures a moving distance of the linear body, when the inspection unit detects an abnormality of the linear body, a fixed side of the accumulator Based on the diameters of the pulley and the moving pulley, the diameter of the linear body, and the number of windings of the linear body, the winding length L of the linear body wound around the fixed pulley and the moving pulley in an arc shape. Calculate _A1 and L _A2 respectively, The length L _C of the linear body extending between the pulleys is calculated from the distance between the axes of the fixed pulley and the moving pulley and the number of windings of the linear body, and the line wound around the accumulator is calculated. The total length L _A of the linear bodies is calculated, and the linear body length L _A is the linear body length L ₀ from the inspection means to the accumulator and the linear body length L ₃ from the accumulator to the processing device. Is added to measure the linear body length L from the inspection means to the processing device, and the moving distance of the linear body after the abnormality detection detected by the measuring means is equal to the linear body length L. The above-mentioned processing device automatically performs the abnormal processing of the linear body when the temperature becomes low.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a diagram for explaining the path line length measuring method according to the present embodiment. The accumulator 9 for the winding path line shown in FIG. 3 and the linear body 2 wound around the accumulator 9 are provided. Shows.

The accumulator 9 is a fixed pulley 20.
The linear body 2 introduced into the accumulator 9 is wound around the fixed pulley 20 in an arc shape, and then moves to the movable pulley 21. Similarly, it is wound around the outer circumference of 21 in an arc shape, and then moves to the fixed pulley 20 again. In this way, the linear body 2 is wound around the outer circumferences of the pulleys 20 and 21 a predetermined number of times and then discharged to the outlet side.

Moving pulley 21 of accumulator 9
Is attached to a belt 23 wound around two drive pulleys 22 via a moving table 24.
With the rotation of the fixed pulley 20, it is possible to move between the normal position A, which is the closest to the fixed pulley 20, so that the fixed pulley 20 is substantially in contact with the fixed pulley 20, and a position spaced from the fixed pulley 20.

An angle (rotation number) detecting device such as an encoder (not shown) is attached to the drive pulley 22, and the rotation number of the drive pulley 22 with respect to the state when the moving pulley 21 is located at the normal position A can be detected. It is like this.

Now, an arbitrary point of the linear body 2 on the inlet side of the accumulator 9 is defined as P1, and an arbitrary point of the linear body 2 on the outlet side is defined as P2, and the linear shape between these two points P1 and P2 is defined. Body 2
A length measuring method of the pass line length L will be described.

First, the length L of the linear body 2 between the two points P1 and P2 is set to the length L ₀ of the linear body 2 from the point P1 to the entrance of the accumulator 9, that is, the fixed pulley 20, and the accumulator. The total length L _A of the linear body 2 wound in 9 and
Divides the outlet of the accumulator 9 to the length L ₃ of the linear body 2 to the point _{P2 (L = L 0 + L} A + L 3).

Here, L ₀ and L ₃ are automatically determined if the positions of the arbitrary points P1 and P2 are determined, regardless of the storage line of the accumulator 9 or the diameter of the linear body 2. It is constant.

On the other hand, the length L _A of the linear body 2 wound inside the accumulator 9 changes depending on the storage line of the accumulator 9 or the diameter of the linear body 2.

This length L _A is further wound on the fixed pulley 20 in an arc shape by a linear body winding length L _A1 and the moving pulley 21 is wound by a linear body in an arc shape. The length L _A2 is divided into a linear length L _C extending between the pulleys 20 and 21 (L _A = L _A1 + L _A2 + L _C ).

In this embodiment, the fixed pulley 20 is used.
Since the diameter of the movable pulley 21 is the same as that of the movable pulley 21,
Winding length L of the linear body wound in a circular arc around the reel 20_A1And move
The winding length L of the linear body wound in an arc shape on the moving side pulley 21
_A2Is equal to. Of the fixed and moving pulleys 20 and 21
The outer diameter of the outer peripheral valley (the portion around which the linear body 2 is wound) is D
₁ , The diameter of the linear body 2 is d, and both pulleys 20, 21 of the linear body 2 are
Let N be the number of windings for the fixed pulley 20 and
Center of the linear body 2 wound in a circular arc around the moving pulley 21
Winding length L_A1, L_A2Can be expressed by the following equation.

L _A1 = L _A2 = (πN (D ₁ + d)) / 2 ... Next, the length L of the linear body extending between the pulleys 20 and 21.
_C is a linear body length L _C1 that extends between the fixed pulley 20 and a moving pulley 21 located at a normal position A that is substantially in contact with the fixed pulley 20, and a moving pulley 21 at the normal position A. It is divided into a linear body length L _C2 extending between the movable pulley 21a and the moving side pulley 21a during length measurement.

Assuming that the outer diameters of the fixed side and moving side pulleys 20 and 21 are D ₂ and the number of windings of the linear body 2 around both pulleys 20 and 21 is N, the fixed side pulley 20 and the moving side located at the normal position A are The axial distance from the pulley 21 is D ₂ , and the length L _{C1 of the} linear body extending between the pulleys 20 and 21 can be expressed by the following equation.

L _C1 = 2ND ₂ ... Next, the diameter of the drive pulley 22 for moving the moving pulley 21 is D ₃ , and the drive pulley 2 detected by the angle detecting device.
Assuming that the rotation speed of 2 is n, the axial distance between the moving pulley 21 located at the normal position A and the moving pulley 21a at the time of length measurement is πD ₃ n, and the moving pulley 21 at the normal position A is
The linear body length L _C2 extending between the moving side pulley 21a and the moving side pulley 21a can be expressed by the following equation.

L _C2 = 2πD ₃ Nn ... From the above items, the total length L _A of the linear body 2 wound in the accumulator 9 can be obtained by the following equation.

L _A = πN (D ₁ + d) + 2ND ₂ + 2πD ₃ Nn ... Therefore, the path line length L of the linear body 2 between the two points P1 and P2 can be calculated by the following equation.

L = πN (D ₁ + d) + 2ND ₂ + 2πD ₃ Nn + L ₀ + L ₃ ... When the accumulator 9 is not in the storage line and the moving pulley 21 is located at the normal position A, the drive pulley Two
Since the rotation speed n of 2 is 0 and L _C2 = 0, the pass line length L is L = πN (D ₁ + d) + 2ND ₂ + L ₀ +
It becomes L ₃ .

As described above, according to the path line length measuring method of the present embodiment, the accumulator 9 is moved regardless of the movement of the moving pulley 21, that is, the accumulation of the accumulator 9 or the diameter of the linear body. The length between any two points on the inlet-side and outlet-side linear bodies 2 can always be accurately measured.

Therefore, the path line length measuring method of the present invention is
By applying the linear body manufacturing line as shown in FIG. 3, it is possible to reliably identify the abnormal portion of the linear body 2. Further, it becomes possible to automate the removal of abnormal parts and the marking. That is, the point P1 on the inlet side of the accumulator 9 is set at the position of the in-line abnormality detection means 7, and the point P2 on the outlet side is provided in front of the winding device 10 such as a cutting device or an automatic marking device. (Not shown) position. Then, when the in-line abnormality detection means 7 detects an abnormality in the linear body 2, the length L of the linear body 2 from the in-line abnormality detection means 7 to the processing device is calculated by the same method as described above. After that, when the moving distance of the linear body 2 after the abnormality detection detected by the scale counter (measuring means) provided in front of the winding device 10 becomes equal to the linear body length L, the processing device The abnormality processing of the linear body 2 may be automatically performed.

In this way, the abnormal portion of the linear body 2 can be reliably identified and processed, and automation can be performed without the need for visual confirmation by the driver, so that the productivity is remarkably improved.

FIG. 2 is a simplified view of an example of the path line length measurement calculation system applied to the automatic abnormality inspection of the linear body in the linear body production line shown in FIG.

[0046] _{L 0, L C1, D 1} , D 2, L 3, N is intended to be determined by the individual production lines, in貯線the accumulator 9, or a constant that does not vary with the diameter of the linear body Yes, and input 31 to the arithmetic unit 30 in advance.

The rotation speed n of the drive pulley 22 and the linear body 2
The diameter d of is a variable, and its value is input 32, 33 to the arithmetic unit 30 at any time. The arithmetic unit 30 substitutes these input values (L ₀ , L _C1 , D ₁ , D ₂ , L ₃ , N, n, d) into the above-mentioned arithmetic expression to convert the in-line abnormality detecting means 7 to the processing unit. The pass line length L of the linear body 2 is calculated at any time.

When an abnormality is detected by the in-line abnormality detecting means 7, the pass line length L of the linear body 2 at that time is detected.
The calculated result is input to the pass line length counter 34 as a preset value 35, and is counted up to the preset value by the measurement pulse of the scale counter (measuring means) 36 on the winding device 10 side.

When the preset value is reached, the output signal is used to perform processing such as automatic stop 37 of the winding device 10 and automatic marking 38 by a marking device for indicating an abnormal point.

The scale counter 3 on the side of the winding device 10 described above
6 is preferably highly accurate.

The present inventors measured the length of the linear body between the two points on the inlet side and the outlet side of the accumulator 9 using this path line length measuring method, and as a result, the error was ± 0.2.
It was less than 5%.

Although the present invention has been described as measuring the lengths of two linear bodies on the inlet side and the outlet side of the accumulator 9 for the winding pass line, the present invention is limited in this respect. First, in FIG. 3, the extrusion molding machine 4 is passed from the delivery device 1 through the delivery path line accumulator 3
For measuring the length of the linear body 2 extending up to, and for measuring the length of the linear body 2 extending from the feeding device 1 through the accumulator 3 for the delivery pass line and the accumulator 9 for the winding pass line to the winding device 10. Of course, it can be applied.

[0053]

In summary, according to the present invention, excellent effects are exhibited as shown below. 1) Regardless of the storage line of the accumulator or the diameter of the linear body, the length between any two points on the linear body on the inlet side and the outlet side of the accumulator can be accurately measured. 2) Automation of the linear body production line can be achieved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a path line length measuring method according to an embodiment of the present invention.

FIG. 2 is a schematic system diagram of a passline length measurement calculation system according to an embodiment of the present invention.

FIG. 3 is a schematic view of a cable extrusion coating production line.

[Explanation of symbols]

2 linear bodies 3 Accumulator for sending path line 9 Accumulator for winding pass line 10 Winding device 20 Fixed pulley 21 Moving pulley 22 Drive pulley 23 belt 36 Scale counter (measurement device)

Claims (5)

[Claims] 1. A linear pulley is wound around the fixed pulley and a movable pulley, and the movable pulley moves to increase a distance between the fixed pulley and the fixed pulley, thereby storing the linear body. In a linear body manufacturing line equipped with an accumulator, in a path line length measuring method between any two points in the linear body on the inlet side and the outlet side of the accumulator, a line from one point on the inlet side of the accumulator to the accumulator The length L ₀ of the cylindrical body and the length L ₃ of the linear body from the accumulator to one point on the outlet side are obtained, and the diameters of the fixed pulley and the moving pulley of the accumulator and the diameter of the linear body are obtained. From the number of windings of the linear body,
The linear body winding lengths L _A1 and L _A2 wound around the fixed pulley and the moving pulley in an arc shape are calculated, and the axial center distance between the fixed pulley and the moving pulley is calculated. calculates the length L _C of the linear body from the number of turns of the linear body extending between two pulleys calculates the total length L _a of the wound linear body to the accumulator, these L _0, L _{3. A} path line length measuring method, characterized by adding ₃ and L _A to obtain the length of a linear body between the above two arbitrary points. 2. The fixed side pulley and the moving side pulley of the accumulator are made equal in diameter to each other, the diameter is D ₁ , the diameter of the linear body is d, and the number of windings of the linear body is N, and the fixed side is The lengths L _A1 and L _A2 of the linear body wound in an arc shape around the pulley and the moving side pulley are L _A1 = L _A2 = (πN (D
The path line length measuring method according to claim 1, which is calculated from ₁ + d)) / 2. 3. The fixed pulley and the movable pulley closest to the fixed pulley are determined from the distance between the shaft centers of the pulleys and the number of windings of the linear body when the movable pulley is closest to the fixed pulley. Calculating the length L _C1 of the linear body extending between
Based on the distance between the moving pulley when it is closest to the fixed pulley and the axial center of the moving pulley when measuring the length, and the number of windings of the linear body, Length L of the linear object that extends between the moving pulley and the measuring pulley
_C2 is calculated and the length L _{C of the} linear body extending between both pulleys is calculated.
The path line length measuring method according to claim 1, wherein 4. The moving pulley of the accumulator is attached to a belt wound around a drive pulley, and is moved by rotation of the drive pulley to a position spaced from a position closest to the fixed pulley. The diameter of the drive pulley is D ₃ , the number of rotations is n, and the number of windings of the linear body is N. Between the moving side pulley closest to the fixed side pulley and the moving side pulley at the time of length measurement, The path line length measuring method according to claim ₃ , wherein the length L _C2 of the extending linear body is calculated from L _C2 = 2πD ₃ Nn. 5. A linear pulley is wound around the stationary pulley and a movable pulley, and the movable pulley moves to increase the distance between the stationary pulley and the stationary pulley, thereby storing the linear body. An accumulator, an inspection means provided on the inlet side of the accumulator for detecting an abnormality of the linear body, a processing device provided on the outlet side of the accumulator for processing an abnormal portion of the linear body, and a linear body In the method for inspecting an abnormality of a linear body in a linear body manufacturing line provided with a measuring means for measuring the moving distance of the linear body, when the inspection means detects an abnormality of the linear body, the stationary pulley and the moving body of the accumulator are moved. Based on the diameter of the side pulley, the diameter of the linear body, and the number of windings of the linear body, the winding lengths L _A1 , L of the linear body wound in an arc shape around the fixed pulley and the moving pulley. Calculate _A2 respectively and fix the above The length L _C of the linear body extending between the two pulleys is calculated from the distance between the axial centers of the side pulley and the moving pulley and the number of windings of the linear body, and the total of the linear bodies wound around the accumulator is calculated. The length L _A is calculated, and the linear body length L ₀ from the inspection means to the accumulator and the linear body length L ₃ from the accumulator to the processing device are added to the linear body length L _A. The length L of the linear body from the inspecting means to the processing device is measured, and when the moving distance of the linear body after the abnormality detection detected by the measuring means becomes equal to the length L of the linear body, An abnormality inspection method, characterized in that the processing device automatically performs the abnormality treatment of the linear body.