JPS6232205Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to the improvement of a grain straightening device for a transfer web, and is used in the textile industry where webs are transported and subjected to various treatments. It is used to correct the distortion of

(Problems with the Prior Art) As a device for correcting the distortion of the grain of a transfer web, for example, the one shown schematically in FIG. 1 is known. That is, the guide roll of the transfer web W,
A straight straightening roll A and a curved straightening roll A are separately arranged perpendicular to the web between A and A, and a first forward and reverse rotation motor (not shown) is driven by a detection signal from a texture detector D. The straightening roll is configured to be rotatable left and right about the intermediate portion of the roll, and the straightening roll is rotated by a second forward/reverse rotation motor (not shown) driven by a detection signal from a texture detector (d). The roll is configured to be able to swing back and forth using both shaft ends as fulcrums, and if a straight inclined distortion occurs in the fabric of the transfer web, the straight straightening roll is rotated to the left or right to remove the distortion. There is a known straightening device which is configured to correct the straightening roller and swing a curved straightening roll either forward or backward when a simple curved distortion occurs in the texture of the transfer web. .

Therefore, according to this device, if the distortion of the fabric grain is irregularly wavy, for example in the shape of a letter "F", the two types of correction rolls A and C are used as they pass through the distorted part. It is necessary to operate each part separately and perform correction in two stages. That is, as shown in Figs. 1 and 2, it is necessary to correct the distortion of the fabric in two stages, between A and B and between B and C, which has the disadvantage of poor correction efficiency and poor correction accuracy. There is a problem that it is poor and requires a large equipment space.

(Purpose of the present invention) The present invention is capable of reliably correcting in one step using one type of straightening roll even if irregular distortions such as those described above occur in the texture of the transfer web. Therefore, it is an object of the present invention to provide a texture straightening device for a transfer web that can significantly improve the grain straightening efficiency and straightening accuracy and reduce the equipment space.

(Structure of the present invention) The texture straightening device for a transfer web according to the present invention includes a curved roll disposed between guide rolls perpendicular to the transfer web, and a curved roll driven by a detection signal from a texture detector. A first forward and reverse rotation motor is configured to swing the roll back and forth using both shaft ends as fulcrums, and a second forward and reverse rotation motor driven by a detection signal from a texture detector rotates the intermediate portion of the roll. It is characterized by being configured so that it can be rotated left and right as a fulcrum.

(Embodiments of the present invention) Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

As shown schematically in FIG.
It is constructed by arranging them orthogonally.

Therefore, the curved roll 2 is the fifth curved roll in this embodiment.
As shown in the figure, it is rotatably suspended horizontally within a horizontally long rectangular frame 5 consisting of left and right vertical frames 3, 3 and upper and lower horizontal frames 4, 4, and is mounted on one protruding roll shaft end 6 via a bearing 7. _The chain wheel 8 is attached, and the belt 9,
The roll is configured to swing back and forth using both shaft ends of the roll as fulcrums, as shown by arrows, via a reducer 10 and a chain 11.

In addition, this curved roll 2 has the other end of the operating rod 12 pivotally connected to one vertical frame 3 attached to a nut member 14 screwed into the screw bar 13, and the nut member is connected to the second forward/reverse rotation motor _M2. Due to the forward and reverse rotation of
Belt 15, wheel 16, screw bar 13
The roll is moved forward and backward in the direction of the arrow through the forward and backward movement, and the frame 5 is rotated in the direction of the arrow using the rotating shafts 17, 17 provided at the intermediate portions of the upper and lower horizontal frames 4, 4 as fulcrums. It is configured to rotate left and right about the approximately middle part as a fulcrum.
In the figure, 18 and 19 are bearings, and 20 is a guide member for the nut member 14, respectively.

Thus, the first and second forward and reverse rotation motors M ₁ ,
M ₂ is as shown schematically in FIGS. 6 to 9, respectively.
The web W is configured to be rotated in forward and reverse directions by a known transmission system based on detection signals from known texture detectors 21 and 21 placed on both sides of the web W. In this invention, the texture T of the web is If the roll is simply curved as shown in Fig. 7, the first forward/reverse rotation motor _M1 is rotated in either the forward or reverse direction to swing the curved roll 2 in the direction of straightening the grain.
If the grain T is simply inclined as shown in Fig. 8, the second forward/reverse rotary motor _M2 is rotated in either the forward or reverse direction to tilt and rotate the curved roll 2 in the direction of straightening the grain. Furthermore, if the grain T is irregularly wavy as shown in FIG. 9, the curved roll 2 is moved in the direction of straightening the grain by simultaneously rotating both forward and reverse rotating motors M ₁ and M ₂ in either the forward or reverse direction. It swings and rotates in a complex manner. When the texture T is normal as shown in FIG. 6, both the forward and reverse rotating motors M ₁ and M ₂ do not rotate, and the curved roll 2 does not operate.

To explain in more detail the grain correction effect of the above-mentioned operation of the curved roll 2, when the web is being transported in the direction of arrow A, as shown in FIG. If it is curved in the preceding state, when the curved roll 2 is operated to swing as shown by the chain line, the fabric lengths L ₁ and L ₂ between the two rolls are different in relation to the guide roll 1, and the fabric length is The shorter _L2 side progresses faster than the longer _L1 side to correct the curved grain.

Also, as shown in Figure 8, when the web is being transported in the direction of arrow A, if the right side of the web is ahead of the left side towards the figure and the grain is slanted, the chain line As shown, when the curved roll 2 is rotated to the left, the fabric lengths L 1 and L ₂ between the two rolls are different in relation to the guide roll ₁ , and the fabric length L 2 is shorter and the fabric length L ₂ is longer. It progresses faster than _{the first} side and corrects the slanted grain.

Furthermore, as shown in FIG. 9, when the web is being transported in the direction of arrow A, the approximately central portion of the web is the most advanced toward the figure, then the left side of the web is the most advanced, and the right side of the web is the most advanced. If the fabric is irregularly wavy in the delayed state, at the same time, swing the curved roll 2 as shown by the chain line.
When rotated to the right, the fabric lengths L ₁ , L ₂ , and L ₃ between the two rolls differ in relation to the guide roll 1, and the fabric length L ₃ and L ₂ side with the shorter fabric length are different from each other in relation to the guide roll 1. The process progresses sequentially faster than _{the first} side to correct irregular wavy texture.

As is clear from the above description of the operation of the curved roll 2, the curved roll 2 can prevent the distortion of the fabric even if it is irregularly wavy, for example in the shape of a letter "F". And as shown in FIG. 4, it can be corrected in one step between A, B and C.

Next, although the detection mechanism of the texture detector 21 used in the present invention is not shown because a known detection mechanism can be used, for example, the detection mechanism previously applied by the inventor of this application, that is, A translucent device having a pair of curved translucent parts curved in opposite directions and formed opposite to each other is placed on one side of the web moiré image measuring device, and the light emitted from the light source placed on the other side of the measuring device and the web A moving moiré image of the web that is developed and formed on a measuring device by transport is projected onto the translucent device, and the light beam is transmitted through the pair of curved translucent portions to generate a double curved translucent portion depending on the state of the moire image. A detection mechanism configured to measure the brightness of transmitted light using a photoelectric element and detect the inclination distortion of the weft of the web based on the difference in brightness (Japanese Patent Application No. 136079/1983);
Alternatively, an imager made of a special prism, a translucent device with a linear transparent section, and a photoelectric element are arranged in sequence on one side of the web, and the linear transparent section of the translucent device is connected to the weft of the web. The images are maintained in the same direction, and the imager is configured to be rotatable around the image forming direction, and a light beam from a light source placed on the other side of the web is projected onto the imager so that the image is formed by the imager. When the image of the weft yarn of the web is passed through the linear transparent part of the translucent device and captured by the photoelectric element, the tilt distortion of the weft yarn in the transferred web is reduced by rotating the imager while the web is being transferred. This uses a detection mechanism configured to measure and detect changes in the amount of light received by the photoelectric element (brightness) when the imager rotates.

As shown in FIG. 3, a width adjustment device E may be incorporated in front of the above-mentioned transfer web texture correction device (on the entrance side of the web) to improve the texture correction effect. The ejecting device will be explained.

10 to 14, 22 is the base 2
3 is a plate-shaped frame constructed via a follow-up mechanism described later, and the frame 22 requires a plurality of pairs of opposing pressure rolls 24, 24' in the direction along the edge of the transfer web W. In this embodiment, one of the opposed pressure rolls 24 is provided with a compression spring 26, and the compression spring causes the rolls 24, 24', the edge end of the transfer web is always clamped under pressure. Reference numeral 27 denotes a transfer web edge detector disposed on the frame 22, and is disposed at the forefront along with the opposing pressure rolls 24, 24' on the receiving side of the web.

In addition, each of the opposing pressure rolls 24, 24' is
The opening inclination angle can be adjusted to increase or decrease as desired, and in this embodiment, each roll 24, 2
You can also adjust the inclination angle of 4′ all at once.
Alternatively, it is configured such that it can be adjusted individually. That is, when adjusting the inclination angle of each roll at the same time, the elongated holes 29, 29 (11th
Loosen the bolts 30, 30 screwed through the holes (see figure), rotate the frame 22 to either the left or right through the elongated holes 29, 29 using the rotation shaft 28 as a fulcrum, and then tighten each bolt. It's better (1st
(See Figure 3), and when adjusting the inclination angle of each roll individually, as shown in Figure 10.
Each roll frame 25 is fastened to the frame 22 at two places with bolts 21 and 22. Using one bolt 31 as a rotation fulcrum, loosen the other bolt 32 screwed through a long hole (not shown). After the rolls 24, 24' are rotated to either the left or right through the long holes, the respective bolts are tightened (see Fig. 14). The angle is gradually increased in accordance with the arrangement order.

Reference numeral 33 denotes a follow-up mechanism that moves the opposing pressure rolls 24, 24' and the detector 27 in response to changes in the position of the edge of the transfer web. Motor 34 capable of forward and reverse rotation, belt 35, pulleys 36, 37
a screw shaft 38 that is rotated in the forward and reverse directions by the motor via the screw shaft 38, a nut member 39 that is fixed to the lower side of the frame 22 and into which the screw shaft 38 is screwed, and a guide bar of the nut member. 40, 40.

This tracking mechanism 33 uses a signal from the edge end position detector 27 of the transfer web to move the opposing pressure rolls 24, 24' to the varying position of the edge edge of the web based on various known transmission systems. The motor 34 is rotated either in the forward direction or in the reverse direction so as to move the detector 27 accordingly.The operation procedure will be explained based on FIGS. 10 and 12.

As shown in FIG. 12, a pair of the above-mentioned transfer web width extending devices are arranged at the passing positions of both side edge ends of the transfer web W, and each of the opposing pressure rolls 24, 24' extends the width of the web. The ends are constantly clamped under pressure and rotated by the web transfer action.
This device performs the necessary width adjustment without interruption, but the end of the web being fed into the set point of the width adjustment device (even if it is just one end of the web)
Even if both ear ends (both ear ends) are biased toward either the outside or the inside, the sweater 34 is rotated either forward or backward by the ear end position detection signal from the detector 27, and the screw shaft 38 is rotated in the forward or backward direction. Rotate it in the opposite direction and attach the frame 2 via the nut member 39.
2, the opposing pressure rolls 24, 24' and the detector 27 are moved to follow the changing position of the edge end, so that the width of the transfer web is constantly widened. After that, it is transferred to the next placed cloth straightening device of the present invention.

(Operations and Effects of the Present Invention) As described in detail above, the curved roll constituting the texture straightening device for a transfer web of the present invention can swing back and forth using both shaft ends of the roll as fulcrums, and It is possible to rotate left and right using the middle part of the roll as a fulcrum, and it is configured so that both of these operations can be performed separately as well as in combination at the same time. Not only can it be reliably corrected when the fabric is deformed in a wavy or slanted shape, but even when the fabric is irregularly wavy, it can be corrected by the combined action of the curved roll. It is possible to reliably correct the grain in one step, thereby significantly improving the grain correction efficiency and correction accuracy, and by reducing the number of correction rolls, it is possible to reduce the equipment space compared to conventional devices.

[Brief explanation of the drawing]

Fig. 1 is a schematic layout explanatory diagram of a conventional transfer web texture correction device, Fig. 2 is an explanatory diagram of the time period required for the texture correction, and Fig. 3 is a diagram showing the width of the transfer web texture correction device according to the present invention. FIG. 4 is an explanatory diagram of the time period required for grain correction; FIG. 5 is a perspective view showing an example of the operating mechanism of the curved roll according to the present invention; FIGS. Figure 9 is an explanatory diagram of the grain correction effect of this device;
Figures 0 to 14 show examples of a width adjusting device that can be used in combination with the grain straightening device of the present invention.
Fig. 10 is a vertical front view of one part, Fig. 11 is a side view with one part cut away, Fig. 12 is an explanatory diagram of the state of use with one part omitted, and Fig. 13 is the width inclination of each opposing pressure roll. Explanatory diagram when changing angles at the same time, 1st
FIG. 4 is an explanatory diagram when the inclination angle of each opposing pressure roll is changed individually. 1...Guide roll, 2...Curved roll, M ₁
...First forward and reverse rotation motor, M ₂ ...Second forward and reverse rotation motor, 21, 21... Texture detector.

Claims (1)

[Scope of utility model registration request] A curved roll is disposed between guide rolls perpendicular to the transfer web, and the curved roll is rotated back and forth using both shaft ends of the roll as fulcrums by a first forward/reverse rotation motor driven by a detection signal from a texture detector. A transfer web characterized in that it is configured to be able to swing in the opposite direction, and is configured to be able to rotate from side to side using the intermediate portion of the roll as a fulcrum by a second forward/reverse rotating motor driven by a detection signal from a texture detector. Grain correction device.