JP3188799B2 - Warp width measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warp width measuring device for measuring a running width of a warp bundle wound on a warping drum.

[0002]

2. Description of the Related Art As shown in FIG. 6, in a partial warping machine 9, warps 80 drawn from a creel 91 are aligned by a twill reed 94 to form a warp bundle of a predetermined width w in a tentering reed 95. After being adjusted as described above, it is wound around a warping drum 92. The winding process of the warp bundle having the predetermined warp width w is repeated several times (several sections), and the winding of the warp onto the warping drum is completed.

[0003] At this time, if there is an error or variation in the warp width (running width of the warp bundle, the same applies hereinafter) w in each section, a predetermined cloth width cannot be obtained or warp unevenness occurs between sections. Therefore, it is necessary to measure the warp width with high accuracy. In FIG. 6, reference numeral 93 indicates
This is a beam for rewinding the warp of the warping drum 92.

[0004] The winding of the first section on the warping drum is performed as follows. First, the warp bundle is divided into several parts, and the ends are collectively hooked on the pins of the warping drum. Then, the warp width is gradually increased while the warping drum is gradually rotated, and the warp width is measured when the width is stabilized.

If the measured warp width w is different from the set value, as shown in FIG.
To change the warp width w to w ′. In FIG. 7, reference numeral 951 denotes a rotation center of the width reed 95, reference numeral 961 denotes a tension adjusting roller, and reference numeral 962 denotes a guide roller. The warp widths w and w 'are measured visually by an operator applying a ruler to the warp bundle 81.

[0006]

However, the conventional method for measuring the warp width of a warping drum has the following problems. The first point is that reading a ruler visually is low in accuracy and individual differences are likely to occur. Such errors are further accelerated if the working conditions worsen. For example, when the warp width w is large, it is not easy to read the scale at the other end of the warp bundle with the ruler applied to one end of the warp bundle, and as a result, a reading error tends to occur.

The second point is that when an operator applies a ruler to a warp bundle, a reading error occurs if the angle of the ruler is not accurate, and the ruler shift easily occurs during measurement. . The present invention has been made in view of such a problem of the conventional warp width measurement and aims to provide a warp width measurement device capable of quickly and accurately measuring the warp width of the first section wound on a warping drum. Is what you do.

[0008]

The present invention relates to a warp width measuring device for measuring the width of a warp wound from a creel onto a warping drum, the warp width measuring device being parallel to a rotation axis of the warping drum. A first proximity piece that is arranged so as to be able to traverse in the direction and can be brought close to one end of the warp bundle, and moves integrally with the first proximity piece and is arranged in a direction parallel to the rotation axis of the warping drum. And a second proximity piece traversing the scale and approaching the other end of the warp bundle, wherein the scale has a current position along the scale of the second proximity piece or The warp width measuring device is provided so as to be able to detect a movement amount from a reference position along a scale.

The most remarkable point in the present invention is that the warp width measuring device is provided with a pair of proximity pieces which can approach both ends of the warp bundle. Then, the second proximity piece traverses along a scale that traverses integrally with the first proximity piece. On the other hand, the first proximity piece is disposed so as to be able to traverse in a direction parallel to the rotation axis of the warping drum. For example, the first proximity piece is slid along a guide shaft arranged parallel to the rotation axis.

The scale is arranged so as to detect the current position of the second proximity piece along the scale or the amount of movement along the scale. In the above description, the approach between the approaching piece and the end of the warp bundle may be performed visually or automatically using a physical sensor and a driving device. It is also preferable to use a digital display scale for displaying the amount of movement of the cursor as a digital value as the scale, and to attach the second proximity piece to the cursor. By reading the digital display of the cursor, the position or the amount of movement of the second proximity piece can be quickly and accurately known.

Further, in addition to the above configuration, it is preferable that the scale is provided with a position sensor that detects the amount of movement of the second proximity piece on the scale or the current position on the scale, and transmits this as an electric signal. If such a position sensor is provided, the distance between the first proximity piece and the second proximity piece can be known from the position sensor without visual inspection, and the signal from the position sensor can be input to the display and displayed. This can be input to the controller and used as control information.

For example, if the position sensor is a sensor (such as an encoder) for detecting the amount of movement of the second proximity piece, the distance from the reference position of the second proximity piece can be determined from the amount of movement. The distance between the first proximity piece and the second proximity piece can be easily known by adding the distance between the first proximity piece and the reference position. This is because the scale traverses integrally with the first proximity piece, and the distance between the first proximity piece and the reference position on the scale is kept constant. Similarly, when the position sensor is a position sensor that detects the current position of the second proximity piece on the scale, the distance between the first proximity piece and the second proximity piece can be easily known.

Furthermore, a comparator in addition to the above structure, to perform an input means capable of inputting a setting value w ₀ of the warp width, the comparison operation on the output value of the position sensor and the warp width setting value w _0, It is preferable to provide a command unit that issues a command to increase or decrease the tentering angle θ of the tentering reed according to the output of the comparator. With this configuration, it is possible to adjust the tentering angle θ of the tentering reed and automatically control the warp width to match the set value w ₀ .

Because, as described above, the distance between the first proximity piece and the second proximity piece, that is, the warp width w can be known from the output value of the position sensor, this is compared with the set value w ₀ , When the warp width w is larger than the set value w ₀ (w>
w ₀ ), the warp width w is increased by increasing the tentering angle θ.
Is closer to the set value w ₀ , and in the opposite case (w <w ₀ ), the tentering angle θ can be reduced to make the warp width w closer to the set value w ₀ .

[0015]

The warp width measuring device of the present invention can measure the running width of a warp bundle (hereinafter simply referred to as "warp width") by the following procedure. First, the first proximity piece is traversed parallel to the rotation axis of the warping drum to approach one end of the warp bundle. At this time, the scale traverses along the rotation axis of the warping drum integrally with the first proximity piece.

Next, the second proximity piece is traversed along the scale and is brought close to the other end of the warp bundle. The scale is
Since it moves integrally with the first proximity piece, the relative positional relationship between the scale and the first proximity piece remains unchanged. Therefore, by knowing the position of the second proximity piece on the scale, the positional relationship between the first proximity piece and the second proximity piece, that is, the first proximity piece and the second
The distance G from the adjacent piece can be known.

On the other hand, since the first proximity piece and the second proximity piece are close to both ends of the warp bundle, the warp width w can be obtained from the distance G between the first proximity piece and the second proximity piece. it can. The warp width w measured by the above-described procedure is greatly improved in accuracy and can be measured quickly as compared with the conventional warp width measurement using a ruler.

The first reason is that the proximity of the first proximity piece to one end of the warp bundle can be achieved by moving the first proximity piece traversely along the guide axis. Compared to the method in which the scale 0) is applied to the warp bundle, the accuracy is significantly higher and more stable. This is because the method in which the ruler is applied to the end of the warp bundle has to support the ruler by hand, tends to cause blurring and is unstable. On the other hand, in the present invention, the first proximity piece can stably hold the position along the guide axis.

The second reason is that the scale is arranged so that the relative positional relationship with the first adjacent piece is always kept constant and parallel to the rotation axis of the warping drum. Direction is always held at right angles to the
That is, the distance between the second proximity piece and the first proximity piece in a direction perpendicular to the warp bundle can be accurately measured.

That is, the angle of the warp bundle with respect to the running direction does not fluctuate like a ruler, and the reference position does not fluctuate, so that the distance between the first proximity piece and the second proximity piece is stabilized. It can be measured accurately in the state. Third, since the scale reading section does not need to be provided at the end of the warp bundle like a ruler, the reading section can be provided at a position where the observer (or machine) can easily read.

That is, in the case of a ruler, since it is necessary to read the scale of the ruler coincident with the end of the warp bundle, there is no flexibility in the reading position. On the other hand, the reading section of the scale of the present invention is provided at a position shifted by a certain distance from the second proximity piece, and the scale may be shifted by that amount. Therefore, the reading section is provided at a position that is easy for the viewer to see. be able to. Also, when a position sensor for reading the scale is mounted, the degree of freedom of the position of the position sensor is large. As described above, according to the present invention, it is possible to provide a warp width measuring device capable of quickly and accurately measuring the warp width of the first section wound around the warping drum.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A warp width measuring apparatus according to an embodiment of the present invention will be described with reference to FIGS. In this example, as shown in FIG. 3, a warp width measuring device 10 for measuring a running width w of a warp bundle 81 wound on a warping drum 50 from a creel (not shown). As shown in FIG. 1, the warp width measuring device 10 is disposed so as to be able to traverse in a direction parallel to the rotation axis 51 (FIG. 3) of the warping drum 50, and the left end 811 of the warp bundle 81 (in the running direction). To the left, the same applies hereinafter), and a scale 20 which moves integrally with the first proximity piece 13 and is arranged in a direction parallel to the rotation axis 51 of the warping drum 50. And a second proximity piece 15 traversing along the scale 20 and capable of approaching the right end 812 of the warp bundle 81. The scale 20 is arranged so that the current position of the second proximity piece 15 along the scale or the amount of movement along the scale 20 can be detected.

The scale 20 has a second proximity piece 15
Is provided with a position sensor 41 (FIG. 4) for transmitting, as an electrical signal, a current position along the scale 20 or a movement amount from a reference position along the scale 20. Furthermore, the warp width measuring device 10 sets the warp width set value w ₀ as shown in FIG.
Input means 42 capable of inputting
A warp width setting value w ₀ which is input from a comparator 43 which performs a comparison operation between the output value of position sensor 41, instruction unit 44 issues a decrease command of tentering angle θ tentering reed 31
And

Hereinafter, each of them will be described in detail. As shown in FIG. 3, the warp width measuring device 10 of the present embodiment
Reed table 3 that makes a traversing motion in a direction parallel to the rotation axis 51
0 base 35. The reed stand 30 is shown in FIG.
As shown in FIG. 3, driven by a screw 53 provided on the warping drum 50, it moves along a guide rail 52 arranged in parallel with the warping drum 50.

The screw 53 is rotated by a servo motor 54 shown in FIG. 3 to form a male screw which is screwed with the base 35 of the reed base 30. In FIG.
Reference numerals 1 and 542 denote pulleys and belts that connect the servo motor 54 and the screw 53.

As shown in FIGS. 1 and 2, a shaft 32 of an opening motor 32 is mounted on a base 35 of the reed base 30.
1 is provided with a revolving reed 31 which is attached to and rotates. The width w of the warp bundle 81 passing through the tentering reed 31 changes according to the rotation angle θ of the tentering reed 31. Base 3
As shown in FIG. 1, a first proximity piece 13 is provided in front of 5. A contact piece 131 that is in contact with the left end 811 of the warp bundle 81 and serves as a reference point of the first proximity piece 13 is substantially an extension of the axis of the shaft 321 of the opening motor 32 (the warp bundle 81).
Running direction line).

The first proximity piece 13 is provided with a first guide shaft 11 provided on the left side of a fixed frame 11 fixed to a front portion of the base 35.
1 is slidably mounted on the shaft. And the first proximity piece 1
A digital display scale 20 is fixed to the right side of 3. The scale 20 includes a slide rail 21 arranged in a direction parallel to the rotation shaft 51, a cursor 22 that freely moves on the slide rail 21, and a support 23 fixed to the right end of the slide rail 21. I have.

The support 23 of the scale 20 is slidably mounted via a spring 113 on a second guide shaft 112 provided to the right of the fixed frame 11. On the right side of the support 23, an adjusting screw 24 screwed to the second guide shaft 112 and locking the support 23 is attached. The piece 13 and the scale 20 are integrally formed with the first
It can move along the second guide shafts 111 and 112. The spring 113 is urged to press the support 23 to the right.

The cursor 22 includes a display unit 25 for digitally displaying the amount of movement of the cursor 22 along the slide rail 21 in units of 0.01 mm, and a built-in position sensor 41 (not shown) for transmitting the amount of movement as an electric signal. Have. The second proximity piece 1 is located on the left side of the cursor 22.
5 is attached, and the second proximity piece 15 is moved by moving the cursor 22 along the slide rail 21.
The right end 812 of the warp bundle 81 can be approached.

The cursor 22 is an electronic display capable of displaying the interval between the adjacent pieces 13 and 15 on the display unit 25 by adjusting the reference point. Then, the first proximity piece 13 and the scale 20 are
As shown in the figure, the first and second guide shafts 111 and 112 can be rotated in the front-rear direction. As shown in (1), the warp bundle 81 can be separated from the running portion.

In FIG. 1 and FIG. 2, reference numeral 551 denotes a tension adjusting roller, 552 denotes a guide roller for the warp bundle 81, and reference numeral 46 in FIG. On the other hand, the left and right side plates 561 and 562 of the warping drum 50 as shown in FIG. 3, the input means 42 for inputting the electronic control unit 40 and the warp width setting value w ₀ is attached. The input means 42 is a display device having a touch panel type input switch 421 as shown in FIG.

On the other hand, as shown in FIG. 4, the electronic control unit 40 includes a comparator 43, a command unit 44, and a drive circuit 45 for the opening motor 32. The comparator 43 compares the output signal of the input means 42 for inputting the output signal and the warp width setting value w ₀ of the position sensor 41 for detecting a warp width w, the difference in the warp width w and its set value w ₀ [Delta] w (= W ₀ −w) is calculated.

The command section 44 receives the output signal Δw of the comparator 43, calculates an angle correction value Δθ (FIG. 1) of the tentering reed 31 required to correct the warp width deviation Δw, and The drive circuit 45 of FIG.
Issue a rotation command. The opening motor 32 is a stepping motor, and the drive circuit 45 drives the opening motor 32 by the number of steps corresponding to the angle Δθ.

Next, the operation and effect of the warp width measuring device 10 of this embodiment will be described. The warp width measuring device 10 can measure the warp width w according to the following procedure and adjust it to the set value w ₀ . When the winding of the warp in the first section is started, first, the bundled warp is rotated by the rotating body 5 of the warping drum 50.
00 is locked to a plurality of hook pins. Then, the rotating body 500 is rotated by about 1/4 turn, and the warp bundle 81 is enlarged to a predetermined width, so that the warp width is stabilized.

When the warp bundle 81 is stabilized, the first proximity piece 13 and the scaler 20 are tilted forward as shown in FIG.
The first and second proximity pieces 13 and 15 are positioned at the running portion of the warp bundle 81. Next, the adjusting screw 24 shown in FIG. 1 is rotated to bring the contact piece 131 of the first proximity piece 13 close to the left end 811 of the warp bundle 81.

Subsequently, the cursor 22 is moved to bring the second proximity piece 15 close to the right end 812 of the warp bundle 81. As a result, the display section 25 of the cursor 22 displays the interval between the contact piece 131 of the first proximity piece 13 and the second proximity piece, that is, the warp width w between the left end 811 and the right end 812 of the warp bundle 81. , The viewer can see the value.

At the same time, the position sensor 41 (FIG. 4) transmits an electric signal proportional to the warp width w to the comparator 43.
Then, the comparator 43 compares the set value w ₀ inputted from the input means 42 with the warp width w, and the command section 44 determines the rotation angle Δθ of the width reed 31 corresponding to the difference Δw between the two. A rotation command is issued to the circuit 451.

The opening motor 32 is provided with the width reed 31.
Rotate by a rotation angle corresponding to the rotation angle Δθ. As a result, the warp width w corresponds to the automatically set values w _0. As described above, according to this example, not only can the running width w of the warp bundle 81 of the first section be measured quickly and accurately, but also the warp width w can be automatically adjusted to the set value w ₀ . The warp width measuring device 10 that can be provided can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view around a warp width measuring device according to an embodiment.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of a warp width measuring device and a warping drum according to the embodiment.

FIG. 4 is a control circuit diagram of the warp width measuring device of the embodiment.

FIG. 5 is a front view of input means of the warp width measuring device of the embodiment.

FIG. 6 is a layout diagram of a partial warping machine.

FIG. 7 is an explanatory diagram of a method of adjusting a warp width by a tentering reed.

[Explanation of symbols]

 10. . . 12. Warp width measuring device, . . 14. first proximity piece; . . 20. second proximity piece, . . Scale, 31. . . Tentacle reed, 41. . . Position sensor, 50. . . Warping drum, 51. . . Axis of rotation,

Continuation of front page (56) References JP-A-2-26948 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D02H 13/00 D02H 13/16

Claims (3)

(57) [Claims] 1. A warp width measuring device for measuring a width of a warp wound from a creel onto a warping drum, the warp width measuring device being capable of traversing in a direction parallel to a rotation axis of the warping drum. A first proximity piece, which is arranged so as to be close to one end of the warp bundle, and moves integrally with the first proximity piece,
The scale has a scale arranged in a direction parallel to the rotation axis of the warping drum, and a second proximity piece that traverses along the scale and can be brought close to the other end of the warp bundle. A warp width measuring device which is arranged so as to detect a movement amount of a second proximity piece from a current position along a scale or a reference position along a scale. 2. The method according to claim 1, wherein the scale includes:
A warp width measuring device, comprising a position sensor for transmitting, as an electric signal, a current position of the second proximity piece along the scale or an amount of movement along the scale. 3. The warp width measuring device according to claim 2, wherein the warp width measuring device includes an input means for inputting a set value of the warp width, a warp width set value input from the input means, and an output value of the position sensor. A comparator for performing a comparison operation with
A command section for issuing a command to increase or decrease the tentering angle of the tentering reed according to the output of the comparator.