JP4313444B2 - Padder pressure adjustment device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a pressure adjusting device for a pair of padding rolls provided in a padder used for impregnating and applying a predetermined treatment liquid to the entire surface of a continuous fabric that is continuously transferred. The present invention relates to a pressure adjusting device for a padder that can be adjusted so that the pressure applied to the fabric by the putting roll is uniform in the width direction of the fabric.
[0002]
[Prior art]
For example, in the textile industry, when a prefabrication or dyeing treatment of a long fabric produced industrially is performed, it is necessary to impregnate a long fabric to be treated with an appropriate treatment liquid. As a general application means for impregnating the treated liquid into the treated cloth, for example, after the treated cloth is immersed in a bath (padder) containing the treated liquid, an extra liquid is applied by a pressure roll (padding roll). The continuous application means for adjusting the liquid content by squeezing out is used, but in the continuous application means for the treatment liquid, squeezing unevenness tends to occur during squeezing with a pressure roll, and in particular, 1800 m / m. However, in some wide fabrics to be treated, it is difficult to obtain a high-quality treated fabric that tends to be unevenly provided in the width direction and has no processing unevenness.
[0003]
That is, the (padder roll, pressure roll) mechanism used as a conventional padder (liquid content adjusting means) has a structure as shown in FIGS. Hereinafter, this conventional example will be described. Reference numeral 1 denotes a pair of left and right movable arms supported by a horizontal support shaft 2, and a bearing 3 is provided at the upper ends of both movable arms 1. A squeezing roll 4 is rotatably held between the bearings 3. Further, a squeeze roll operating body by an air diaphragm 6 is provided between the lower end of the movable arm 1 and the fixed frame 5. 7 is a receiving roll arranged in parallel with the squeezing roll 4, and is sandwiched between the receiving roll 7 and the squeezing roll 4 by contact pressure generated by the receiving roll 7 and the squeezing roll 4 in cooperation. The excess chemical liquid impregnated in the fabric to be transferred is squeezed and adjusted and transferred to a desired liquid content.
[0004]
In order to adjust the liquid content of the fabric with the padder having such a configuration, the liquid content of the fabric that has passed between the squeeze roll 4 and the receiving roll 7 is fixed to the upper portion of the padder. The air pressure supplied to the air diaphragm 6 is adjusted according to the measured value by the measuring device 8, the contact pressure by the squeeze roll 4 and the receiving roll 7 is adjusted, and the fabric transferred by this contact pressure is adjusted. It is expected that the liquid content is automatically adjusted so that the liquid content is constant and uniform.
[0005]
[Problems to be solved by the invention]
However, in such a conventional padder, the liquid-containing fabric is passed between the squeezing roll 4 and the receiving roll 7 arranged in parallel with each other, and the contact pressure by these rolls is applied to the fabric. Appropriate amount of the applied liquid is squeezed and transferred to the next treatment step as a predetermined liquid content. Between the squeeze roll 4 and the receiving roll 7 arranged side by side, both sides of both rolls Since the support end is configured to move in pressure contact, errors in contact pressure between both ends and the center of the rolls occur, or roll deflection caused by the total length of each roll increases. Due to this, it is difficult to keep the contact pressure over the entire length of both rolls uniform, and this makes it difficult to adjust the entire surface of the long fabric, particularly the liquid content in the fabric width direction. Met.
[0006]
Therefore, in the above conventional example, the liquid content (water content) of the fabric that has passed through the squeezing roll 4 and the receiving roll 7 is measured by the moisture measuring device 8 , and the measured value is used as an air diaphragm. The contact pressure between the squeezing roll 4 and the receiving roll 7 is controlled so that the liquid content of the squeezed fabric is controlled in the width direction by controlling the air supply amount of the fabric. Therefore, a plurality of moisture measuring devices 8 must be arranged and used along the width direction of the fabric.
[0007]
When a plurality of moisture measuring devices 8 are used in this way, a measurement error occurs due to the difference in the characteristics of each moisture measuring device 8 , and this causes the liquid content in the width direction of the fabric to be kept accurately and constant. I could not.
[0008]
When pressure air is used as a driving force for operating the squeeze roll 4, the influence of the air chamber, the length of the air hose from the air supply source to the air diaphragm, and the air diaphragm Since the air pressure fluctuates due to the operating friction force in the power transmission mechanism between the squeezing rolls 4, it is impossible to always control the nip width between the squeezing roll 4 and the receiving roll 7 with a constant air pressure. In addition, the liquid content on the entire surface of the fabric could not be made uniform and stable.
[0009]
The present invention has been made paying attention to such drawbacks. By using a ball screw jack as a paddle roll drive source, the backlash in the power transmission mechanism is eliminated, thereby improving the operation responsiveness of the padder roll and the nip width. The first object is to improve the control accuracy of the above.
[0010]
Further, in the present invention, the sensor for measuring the liquid content applied to the fabric is used as one set, and the set of sensors is further scanned in the width direction of the fabric so that the liquid content in the width direction of the fabric is obtained. The second purpose is to measure the rate accurately and economically.
[0011]
[Means for Solving the Problems]
According to claim 1 in order to achieve the above Symbol purpose has a squeeze roll and the receiving roll are disposed parallel to each other, and a movable arm which displaceably supported to the roll direction undergo the narrowed roll, receiving roll a pressure adjusting device padder which is passed through the fabric performs squeeze liquid of the fabric between the squeeze roll, a screw which is engaged through a ball rotatably supported by for labeling nut to the movable arm A liquid content measurement sensor comprising: a ball screw jack having a shaft ; and a liquid content measurement sensor that reciprocates in the entire width direction of the fabric that has passed between the receiving roll and the squeezing roll to measure the liquid content of the fabric. The squeeze roll is displaced by operating a ball screw jack based on the output of the measurement sensor .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below based on the embodiment shown in FIGS.
[0014]
Reference numeral 11 denotes a receiving roll rotatably supported by a bearing 13 fixed to the base frame 12, and a squeezing roll 14 is arranged so as to be parallel to the receiving roll 11. Both ends of the squeeze roll 14 are rotatably supported by bearings 16 provided at the upper ends of a pair of left and right movable arms 15. The lower ends of these movable arms 15 correspond to ball screw jacks 17. A traveling nut 18 is pivotally supported. An intermediate portion in the axial direction of the movable arm 15 is pivotally supported on the base frame 12 via a support shaft 19.
[0015]
The structure of the ball screw jack 17 is known. For example, as shown in FIG. 2 , the screw is driven by a driving force of a motor 17-2 via a worm and a worm wheel (not shown) housed in the casing 17-3. The shaft 17-1 is moved in the axial direction, and the travel ring nut 18 is meshed with the screw shaft 17-1 via a ball (not shown).
[0016]
Reference numeral 20 denotes a sensor for measuring the liquid content of the fabric 21 squeezed by the receiving roll 11 and the squeezing roll 14, and this sensor 20 is paired with the fabric 21 in between. Is supported by a screw rod 22 arranged in the width direction of the fabric 21, and the sensor 20 can be reciprocated in the width direction of the fabric 21 by rotating the screw rod 22 forward and backward.
[0017]
The sensor 20 can selectively use a known appropriate moisture content measuring device, and drives and controls the motor 17-2 of the ball screw jack 17 on the basis of the measurement output obtained from the sensor 20. can do. Reference numeral 23 denotes a treatment liquid impregnation tank.
[0018]
Although the present embodiment has been described above, its operation will be described next. The fabric 21 containing the treatment liquid in the treatment liquid impregnation tank 23 passes between the receiving roll 11 and the squeeze roll 14, so that A desired squeezed liquid is made under the pressing force of the receiving roll 11 and the squeezing roll 14 and transferred to the next processing step. Then, in order to adjust the liquid content of the fabric 21, the ball screw jack 17 is operated and the screw shaft 17-1 is rotated in the forward direction or the reverse direction, whereby the movable arm 15 is moved via the traveling nut 18. By rotating around the support shaft 19 as a fulcrum, the contact pressure between the squeeze roll 14 and the receiving roll 11 can be changed to change the liquid content of the fabric.
[0019]
However, when the liquid treatment of the fabric 21 having a long width is performed, the receiving roll 11 and the squeezing roll 14 are naturally long, and the receiving roll 11 and the squeezing roll 14 are easily bent. Due to this, the contact pressure in the fabric width direction is non-uniform, and it is difficult to make the liquid content uniform and constant. Therefore, in the present embodiment, the liquid content in the width direction of the fabric 21 squeezed by the receiving roll 11 and the squeezing roll 14 is measured by the sensor 20, and the liquid content becomes uniform based on the measured value. Thus, the ball screw jack 17 is operated. Further, in order to measure the liquid content in the fabric width direction with a pair of sensors 20, the screw rod 22 that supports the sensor 20 is rotated in the forward direction or the reverse direction to move the sensor 20 in the width direction of the fabric 21. Move.
[0020]
As described above, in the present embodiment, the ball screw jack 17 that uses electric force is used as power for moving the squeeze roll 14 closer to or away from the receiving roll 11, and the screw shaft 17 of the ball screw jack 17 is used. The traveling nut 18 meshed with -1 is directly supported on the movable arm 15, so that a transmission loss due to backlash or the like occurs in the power transmission portion between the ball screw jack 17 and the movable arm 15. Therefore, the squeeze roll 14 can be operated accurately and reliably, and the liquid content can be adjusted with high accuracy with respect to the fabric 21.
[0021]
In addition, in a conventional sensor in which a plurality of sensors are arranged and used, an error due to variations in each sensor or correction of the errors to improve measurement accuracy and a correction circuit for simplifying the configuration are provided. However, in the present invention, the sensor 20 for measuring the liquid content in the width direction of the fabric is formed as one set, and the sensor is scanned in the width direction of the fabric. Is simplified and the economy is improved.
[0022]
【The invention's effect】
As described above, according to the padder pressure adjusting device of the present invention, the contact pressure to the fabric by the padder roll including the receiving roll 11 and the squeezing roll 14 can be accurately adjusted. It is easy and reliable to adjust to a uniform liquid content. Further, since the number of sensors used for measuring the liquid content in the width direction of the fabric is set as one set, there is an effect that measurement accuracy is improved as well as economic efficiency.
[Brief description of the drawings]
FIG. 1 is an explanatory side view showing an embodiment of a padder according to the present invention.
FIG. 2 is a perspective view of a ball screw jack used in a padder according to the present invention.
FIG. 3 is an explanatory side view of a conventional padder.
FIG. 4 is an explanatory front view of a conventional padder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Receiving roll 12 ... Base frame 13 ... Bearing 14 ... Diaphragm roll 15 ... Movable arm 16 ... Bearing 17 ... Ball screw jack 18 ... Traveling nut 19 ... Spindle 20 ... Sensor 21 ... Fabric 22 ... Screw rod 23 ... Impregnating processing liquid Tank

Claims (1)

And roles and aperture receiving roles that are arranged parallel to each other, have a movable arm which displaceably supported to Ri roll side the roll receiving the direction the narrowed, and the squeeze rolls and the receiving roll A pressure adjusting device for a padder that passes the fabric between them and squeezes the fabric ,
The axially supported by For labeling nut to the movable arm, the entire width direction of the fabric has passed through between the ball screw jack key, and the receiving the squeezing roll and roll with a screw shaft that is meshed through a ball And a liquid content measurement sensor for measuring the liquid content of the fabric, and displacing the squeeze roll by operating the ball screw jack based on the output of the liquid content measurement sensor. A pressure adjusting device for a padder, characterized in that.

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