JPH0798220A - Device for measuring coil diameter and width - Google Patents

Abstract

PURPOSE:To provide a coil diameter ar width measurement device of high measurement precision and economy. CONSTITUTION:A sliding unit 4 is provided with a coil end detection sensor 5 and scale reading sensor 6. As the sliding unit 4 rises along a track 1, the coil end detection sensor 5 sequentially detects a lower end L0 of the outside diameter of a coil 25 of foil end detection sensor 5, a lower end L1 of the inside diameter, an upper end L2 of the inside diameter and an upper end L3 of the outside diameter. The scale reading sensor 6 reads the scale of magnetic lattice stripes of scale 3, so that travel distance of the sliding unit 4 is measured, with the result that a calculator 10, based on the signal of both sensors 5 and 6, calculates outside and inside diameters of the coil 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil diameter or coil width measuring device, and is useful when applied to measuring the coil diameter or coil width of a strip steel coil or the like.

[0002]

2. Description of the Related Art FIG. 7 is a front view of a conventional coil diameter measuring device. As shown in the figure, the coil diameter measuring device has a column 22, a beam 23, a reflective laser sensor 24, and a calculator 26.

The column 22 is erected on the side of a coil 25 such as a steel strip coil placed on the coil support 21. Beam 2
3 has its base end supported on the upper portion of the support column 22 and occupies above the coil 25. The laser sensor 24
The coil 25 is fixed to the tip of the beam 23 so as to occupy vertically above the central axis of the coil 25, and the apex P of the outer peripheral surface of the coil 25.
The distance h _{3 up} to is detected and the detection signal at this time is output to the calculator 26. The calculator 26 inputs the output signal from the laser sensor 24, and based on this output signal and the height h ₁ of the coil receiving base 21 and the overlapping height h ₂ of the lower part of the coil 25 and the coil receiving base 21. The coil diameter of the coil 25 is calculated.

According to the measuring device as described above, when the coil 25 is placed on the coil receiving base 21, the distance h ₃ is measured by the laser sensor 24, and as a result, the distance at this time is calculated by the calculator 26. h ₃ and the height h ₁
The coil diameter of the coil 25 is calculated from the height and the height h ₂ .

The alternate long and short dash line in the figure shows a state in which a coil 25 'having a smaller coil diameter than the coil 25 is placed.

[0006]

However, in the coil diameter measuring device according to the prior art as described above, the calculation error of the overlapping height h ₂ between the lower portion of the coil 25 and the coil receiving base 21 and the laser sensor 24 and the coil 25. A measurement error of about ± 10 mm will occur due to misalignment with the central axis of.

Therefore, in order to reduce the measurement error to improve the measurement accuracy, complicated calculation is required in the calculation of the height h _{2 and} the like, and each time the coil diameter is measured, the laser sensor 24 and the coil 25 are used. It requires complicated work such as careful alignment with the central axis of the coil 25 'and the like.

Further, since the above-mentioned measuring device cannot measure the coil width, another measuring device is required to measure the coil width.

The present invention has been made in view of the above-mentioned prior art, and an object of the present invention is to provide an economical coil diameter or coil width measuring device with high measurement accuracy.

[0010]

The structure of the present invention which achieves the above-mentioned object, is relatively opposed to the end face of the coil and to the side face of the moving body or the coil which moves in the first direction parallel to this end face. A moving body that moves in a second direction parallel to the axial direction of the coil, moving means that moves the moving body in the first or second direction, and moving distance detection that detects the moving distance of the moving body. Means and a detection unit are fixed to the moving body so as to face the center line of the end surface or the side surface, and move in the first or second direction together with the moving body to move the upper and lower ends or the side surface of the end surface. A coil end detecting means for detecting the left and right ends of the, and a calculator for inputting signals output from the coil end detecting means and the moving distance detecting means and calculating a coil diameter or a coil width based on these signals. Characterized by having To.

[0011]

According to the present invention having the above structure, when the moving body moves in the first or second direction with respect to the coil, the moving distance detecting means detects the moving distance of the moving body at this time and also detects the coil end. The means detects the upper and lower ends of the end surface of the coil or the left and right edges of the side surface, and as a result, the computing unit calculates the coil diameter or the coil width of the coil based on the signals of both the detecting means.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings.

1 and 2 are a side view and a front view of a coil diameter measuring device according to a first embodiment of the present invention, and FIG.
It is a front view which shows the installation state of the said measuring device. As shown in these figures, the coil diameter measuring device according to the present embodiment,
Rail 1, scale 3, sliding unit 4, coil end detection sensor 5, scale reading sensor 6, oscillator 7, supporting portions 8, 9a, 9b, 4a, calculator 10, ball screw 11, drive motor 12, nut 13, and guide. It has a roller 14.

Of these, the rail 1 is a columnar member for guiding the sliding unit 4, and is vertically erected by a trapezoidal support portion 8 that supports the lower end portion thereof. Further, a scale 3 is provided on the front surface of the rail 1 along the longitudinal direction thereof. The scale 3 has a magnetic grid stripe scale fixed over the required length.

The ball screw 11 is supported at its upper end and lower end by means of supporting portions 9a, 9b which are fixed to the upper end of the rail 1 and the lower part of the back so that the ball screw 11 is parallel to the rail 1 on the back side of the rail 1. The part is rotatably supported. The lower end of the ball screw 11 is connected to the rotary shaft of a drive motor 12 fixed to the lower portion of the back surface of the rail 1.

The sliding unit 4 is a rectangular parallelepiped moving body that moves up and down along the rail 1. That is, the sliding unit 4 has the ball screw 1
1 is provided with a nut 13 screwed with the rail 1
Guide roller 1 that abuts on the back surface of and rotates on this back surface
4 is provided so that when the ball screw 11 rotates to one side or the other, it rises or falls along the rail 1.

Further, a scale reading sensor 6 and a transmitter 7 are fixed on the front surface of the sliding unit 4,
A coil end detection sensor 5 is fixed to the rear surface of the sliding unit 4 via a support portion 4a provided so as to project from the rear surface. The scale reading sensor 6 is provided so that its detecting portion faces the scale of the scale 3 through a hole 15 formed in the front surface of the sliding unit 4, and the scale is sequentially read as the sliding unit 4 rises. These read signals are sent to the arithmetic unit 10 via the transmitter 7. Further, the coil end detection sensor 5 has the same height as the scale reading sensor 6, and the detection portion thereof is provided so as to face the direction opposite to the back surface of the rail 1 (the direction of arrow A in FIG. 1). The coil ends (details described later) are sequentially detected as the sliding unit 4 rises, and these detection signals are sent to the arithmetic unit 10 via the transmitter 7.

The calculator 10 inputs signals sent from the scale reading sensor 6 and the coil end detecting sensor 5 and calculates the coil diameter based on these signals (details will be described later).

Further, such a measuring device is installed as shown in FIG. That is, the end surface 25b of the coil 25 placed on the coil support 21 and the back surface of the rail 1 face each other,
Moreover, the detecting portion of the coil end detecting sensor 5 is installed so as to face the vertical center line 25a (the center line in the horizontal direction in the figure) of the end face 25b. In the drawing, points L ₀ , L ₁ , L ₂ and L ₃ are the lower end of the outer diameter, the lower end of the inner diameter, the upper end of the inner diameter and the upper end of the outer diameter of the end face 25b.

Next, the procedure for measuring the coil diameter by this measuring device will be described with reference to the flow charts of FIGS. 3 and 4.

After the coil 25 is placed on the coil support 21, the coil diameter is started by operating a remote control device (not shown) or an operating device (not shown) provided near the measuring device. Then, the drive motor 12 is driven to rotate the ball screw 11 to one side, and the sliding unit 4 is accordingly moved to the standby position at the lower end portion of the rail 1 (see FIG. 3).
(See step S ₁ ). When the sliding unit 4 rises and reaches the height of the lower end L ₀ of the outer diameter which is the first detection point, the coil end detection sensor 5 detects this lower end L _0, and at the same time, the scale reading sensor 6 causes the scale 3 to scale. And the signals of these sensors are transmitted to the arithmetic unit 10 via the transmitter 7.
When the detection signal of the lower end L ₀ of the outer diameter is input, the calculator 10 resets the internal counter memory (see steps S ₂ , S ₃ and S ₄ ).

After that, the sliding unit 4 continues to move up, the scale reading sensor 6 sequentially reads the scales of the scale 3 accordingly, and the read signals are sequentially counted by the counter memory of the arithmetic unit 10 so that the sliding unit 4 can be read. The moving distance from the lower end L _{0 of the} outer diameter is measured.

When the sliding unit 4 rises and reaches the height of the lower end L ₁ and the upper end L ₂ of the inner diameter, the coil end detection sensor 5 sequentially detects the lower end L ₁ and the upper end L ₂ ,
These detection signals are transmitted to the arithmetic unit 10. Calculator 10
When these detection signals of the lower end L ₁ and the upper end L ₂ are input, the moving distance L ₁ ′ (distance from L ₀ to L ₁ ) and L ₂ ′ (distance from L ₀ to L ₂ ) at this time are calculated. storage to (step _{S 4, S 5, S 6} , S 7, S 8, S 9).

When the sliding unit 4 further rises and reaches the height of the upper end L ₃ of the outer diameter, the coil end detection sensor 5 detects the upper end L ₃ and outputs this detection signal to the computing unit 1.
Transmit to 0.

As a result, the calculator 10 determines the moving distance at this time.
Distance L₃′ (L₀To L₃Outside the coil 25)
The diameter, and the moving distance L stored earlier₁′, L₂Based on
Based on L₂′ -L₁′ Is calculated to determine the inner diameter of the coil 25.
Ask. (Step S_Ten, S ₁₁, S₁₂).

Finally, the coil 2 obtained by the arithmetic unit 10
The outer diameter and the inner diameter of 5 are printed out or displayed by a printer (not shown) or a display device (not shown) to finish the measurement, and the sliding unit 4 descends and automatically returns to the standby position (step S ₁₃ ).

In the coil diameter measuring device shown in FIG. 1,
Although the coil end detection sensor 5 is fixed to the back surface of the sliding unit 4, it may be fixed to the side surface of the sliding unit 4 as shown in FIG. However, in this case, in order to make the detection part of the coil end detection sensor 5 face the center line 25a of the end face 25, the stand 1 is attached to the center line 2a.
It is installed by being shifted in the left-right direction in the figure from 5a.

Next, FIG. 6 is a side view showing an installed state of the coil width measuring apparatus according to the second embodiment of the present invention. As shown in the figure, the coil width measuring device according to the present embodiment,
The rail 101, the scale 103, the sliding unit 104, the coil end detection sensor 105, the scale reading sensor 106, the transmitter 107, the calculator 110, the ball screw 111, and the stand 112 are included. In addition, L in the figure
The points L ₀ and LL ₁ are the left end and the right end of the coil 25 in the width direction (horizontal direction in the drawing).

Of these, the rail 101 is a columnar member for guiding the sliding unit 104 like the rail 1 shown in FIG. 1, and a pair of stands 111 whose right and left ends in the figure are erected on the floor 2. It is provided so as to be horizontal and parallel to the side surface of the coil 25 placed on the coil receiving base 21 by being supported by the upper ends of the coils.
Moreover, the height of the rail 101 is adjusted to be lower than the uppermost end of the coil 25 'having the smallest diameter. Other configurations of the scale 103, the sliding unit 104, the coil end detection sensor 105, the scale reading sensor 106, the transmitter 107, the calculator 110, and the ball screw 111 are as follows: the scale 3, the sliding unit 4, the coil end detection sensor 5 shown in FIG. The scale reading sensor 6, the oscillator 7, the calculator 10, and the ball screw 11 are the same as those of the first embodiment, and the description thereof is omitted here.

According to such a coil width measuring device, when the coil width measurement is started by operating a remote control device (not shown) or an operating device (not shown) provided in the vicinity of the main measuring device, the drive motor 112 is driven. Driven by the ball screw 111
Rotates to one side, and the sliding unit 104 moves to the right from the left end portion of the rail 101, which is the standby position, in the figure accordingly. When the sliding unit 104 moves and reaches a position facing the left end LL ₀ of the coil 25, which is the first detection point, the coil end detection sensor 105 detects this left end LL _0, and at the same time, the scale reading sensor 1
06 reads the scale of the scale 103, and the signals of these sensors are sent to the computing unit 1 via the transmitter 107.
Transmit to 10. The arithmetic unit 110 resets the internal counter memory when the detection signal of the left end LL ₀ is input.

Subsequently, when the sliding unit 104 reaches the position facing the right end LL _{1 of the} coil 25, the coil end detection sensor 105 detects the right end LL ₁ and transmits this detection signal to the calculator 110. As a result, calculator 1
10, the moving distance LL ₁ ′ (distance from LL ₀ to LL ₁ ) of the sliding unit 104 at this time is the coil width of the coil 25.

Finally, the coil width of the coil 25 obtained by the calculator 110 is printed out or displayed by a printer (not shown) or a display device (not shown) to finish the measurement, and the sliding unit 104 is automatically moved to the standby position. Return.

As described above, the measuring devices according to the first and second embodiments are both sliding units 4 and 104.
The coil ends (the upper and lower ends and the left and right ends) are detected by the coil end detection sensors 6 and 106, and the scale of the scale 3, 103, that is, the moving distance of the sliding units 4 and 104 is read by the scale reading sensor 7. By reading with 107, the coil diameter and the coil width are measured. So, for example, scale 3,
If the scale of the magnetic lattice stripes of 103 is read in units of 1/10 mm, the measurement error will be about ± 1 mm, and the measurement accuracy of the coil diameter and the coil width will be greatly improved as compared with the conventional measuring device.

Further, in the conventional measuring device shown in FIG. 7, the laser sensor 24 and the like are occupied above the coil 25, but in the measuring devices according to the first and second embodiments, such a coil 25 is used. Since there is no member occupying the upper part of the coil, the coil 25 can be easily transported by an overhead crane (not shown). In the measuring device according to the first embodiment, since there is no member that occupies the side of the coil 25 unlike the support column 22 in FIG. 7, the transfer is easier.

Since the main part of the measuring device according to the first embodiment can be used as it is as the main part of the measuring device according to the second embodiment, it is possible to economically measure the coil diameter and the coil width. You can

The structure of the present invention is, of course, the above-mentioned first.
The structure of the sliding units 4 and 104 and the moving means thereof may be freely modified within the scope of existing technology.

[0037]

As described above in detail with the embodiments, according to the present invention, the computing unit calculates the coil diameter or the coil width based on the signals from the coil end detecting means and the moving distance detecting means. The coil diameter and coil width can be measured more accurately and economically.

[Brief description of drawings]

FIG. 1 is a side view of a coil diameter measuring device according to an embodiment of the present invention.

FIG. 2 is a front view of the measuring device.

FIG. 3 is a front view showing an installation state of the measuring device.

FIG. 4 is a flowchart showing a procedure for measuring a coil diameter by the measuring device.

FIG. 5 is a front view of another coil diameter measuring device according to an embodiment of the present invention.

FIG. 6 is a side view showing an installed state of a coil width measuring device according to an embodiment of the present invention.

FIG. 7 is a front view of a coil diameter measuring device according to a conventional technique.

[Explanation of symbols]

 1,101 Rail 3,103 Scale 4,104 Sliding unit 5,105 Coil end detection sensor 6,106 Scale reading sensor 7,107 Transmitter 10,110 Computing unit 11,111 Ball screw 12,112 Drive motor

Claims (1)

[Claims] Claim: What is claimed is: 1. A coil moving relative to an end surface of a coil and moving in a first direction parallel to the end surface or a side surface of the coil, and moving in a second direction parallel to the axial direction of the coil. A moving body; moving means for moving the moving body in the first or second direction; moving distance detecting means for detecting a moving distance of the moving body; It is fixed to the moving body so as to face each other, and together with the moving body, the first
Alternatively, coil end detecting means for moving in the second direction to detect the upper and lower ends of the end surface or the left and right ends of the side surface, and signals inputted from the coil end detecting means and the moving distance detecting means are inputted. And a calculator for calculating the coil diameter or the coil width based on the signal of 1.