JP2011149123A - Pretreatment apparatus for dyeing by inkjet method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that since useless cloth and useless pretreatment agent become required when the position adjustments of a doctor roller are carried out for one side by the other side, and a problem that since the rotation is directed so that the pretreatment agent held between both rollers of a pasting roller and the doctor roller is drawn inward, when a foreign substance is drawn in, a boss part, which serves as a bearing of the roller, is bent and distortion in the adjustment of pasting amount occurs and causes application amount to become uneven. <P>SOLUTION: A pretreatment apparatus is equipped with a hand-operated adjusting apparatus for adjusting the application amount by adjusting an interval between the pasting roller and the doctor roller. A bearing member, which is coupled to the hand-operated adjusting apparatus and is provided in both ends of the doctor roller, is moved only by a predetermined distance using a driving source without moving the hand-operated adjusting apparatus. Thereby, the adjustment of application amount, which applies to the cloth, is performed. The rotation is directed so that the foreign substance may not be drawn into between the pasting roller and the doctor roller. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention is an apparatus for pre-treating a fabric to obtain a fabric suitable for dyeing by an ink jet method, and draws out the fabric and applies a pre-treatment agent to the entire surface of the fabric with a uniform thickness. It relates to the device.

  The conventional dyeing pretreatment apparatus using the inkjet method uniformly applies a pasting machine for applying a paste-like pretreatment agent to a fabric drawn from a raw fabric, and a paste-like pretreatment agent on the applied fabric surface. Comprising a roller press machine for smoothing and a dryer for drying and winding up the pretreatment agent of the applied fabric, and the gluing machine, the roller press machine and the dryer are arranged in a straight line and connected. An operation for pre-treating the fabric is performed, and the gluing machine includes a gluing roller and a doctor roller that store the pre-treatment agent in the valleys arranged in the lateral direction and press the gluing roller against the fabric. The amount of pretreatment agent applied can be adjusted by changing the gap between the gluing roller and doctor roller, and the surface speed of the gluing roller can be changed with respect to the fabric traveling speed. Adjust the amount, the above roller presser is up and down A pair of rubber pressure roller arranged, apparatus comprising means for adjusting the pressure between the two rollers is known. (See Patent Document 1)

JP-A-2005-179802

  In the conventional pre-processing apparatus, since the processing speed of the pre-processing is about 0.8 m / min, the position adjustment of the doctor roller is supported by adjusting each of the left and right sides. Recently, however, there has been a demand to increase the processing speed of the pre-processing, and there is a desire to be able to adjust the distance between the doctor roller and the glue roller with a simple operation instead of one side at a time. Improvement of the position adjustment mechanism of the doctor roller is desired.

  The reason is that the pretreatment agent itself has a low viscosity because it is desired to perform the pretreatment efficiently by increasing the coating speed of the pretreatment agent to about 10 m / min. Since the viscosity of the pretreatment agent is low, the pretreatment agent will fall downward from between the gluing roller and the doctor roller if it is first adjusted to the interval at which the gluing roller and doctor roller are applied. As a result, a portion in which a large amount of the pretreatment agent is applied is formed on the fabric application start side, which causes printing unevenness and takes time for drying. For this reason, the procedure for adjusting the position of the doctor roller is made so that the actual coating thickness is adjusted after the application of the pretreatment agent is started.

  As an initial operation of the pretreatment device, the gap between the glue roller and the doctor roller is set to a state close to 0, the pretreatment agent is held in the valley between the glue roller and the doctor roller, and both rollers are rotated in this state. The treatment agent is applied to the entire circumference of the gluing roller, and both rollers are stopped at one end and the fabric is passed through the conveyance path to start the pretreatment. If the speed is about 0.8 m / min, Even if the position adjustment mechanism of the left and right doctor rollers is adjusted, the fabric conveyed in about 7 seconds is only 9.3 cm, but it is about 10 m / min. If it took 7 seconds, the fabric transported in a state where the left and right coating thicknesses became non-uniform during that time became 116 cm, and this part could not be used, so the pretreatment agent and the fabric were wasted. Has become . In addition, when the amount of application to the fabric varies from side to side when the conveyance speed is high, the amount of the pretreatment agent applied is larger than the side where the pretreatment agent is applied more than the side where the amount is conveyed, and meandering occurs during conveyance. Wrinkles may occur.

  Further, the rotation directions of the glue roller and the doctor roller are such that the pretreatment agent held between the glue roller and the doctor roller is drawn inward as shown in FIG. Because of this rotational direction, foreign objects are easily drawn in. If foreign objects are drawn between the glue roller and doctor roller, a force is applied to push each roller, and the boss (not shown) bearing the rollers is bent. However, there is a problem that the amount of pre-treatment agent applied becomes non-uniform due to distortion in the glue amount adjustment. In addition, the rotation direction is such that the pretreatment agent held between the glue roller and the doctor roller is drawn inward, so that on the side where the application amount is adjusted by the interval between the glue roller and the doctor roller, the pretreatment agent is The surface tension of the pretreatment agent in order to speed up the rotation of the roller as the conveyance speed increases because the glue roller and the doctor roller rotate away from each other. On the other hand, the pasting roller and the doctor roller pull the pretreatment agent on the application surface side, and the pretreatment agent is uneven on the application surface of the pasting roller. In order to eliminate the unevenness, a large amount of pretreatment agent is applied, and after application, the application is made uniform with a pressure roller. For this reason, in the pressure roller process, the pre-treatment agent is uniformly leveled and excess pre-treatment agent accumulates in the vicinity of the pressure roller inlet, and more pre-treatment agent than necessary is used.

Further, in the post-process for applying the pretreatment agent, the pressure roller is used to adjust the pressure applied to the fabric coated with the pretreatment agent with a pair of upper and lower rubber pressure rollers. Although the striped irregularities generated on the surface of the fabric were erased by applying pressure, the pasting machine and the roller pressing machine can be used independently, so the processing speed of the pretreatment is increased. It is difficult to adjust the respective operation speeds and the processing speed is increased. As a result, the transport tension applied to the fabric increases, and as a result, the fabric stretches. There was also a problem that the fabric was not uniform, but the fabric was uneven due to the weaving of the fabric, and the fabric was wrinkled or meandered during conveyance.

In order to solve the above-mentioned problems, claim 1 of the present invention is a pretreatment device for continuously applying a paste-like pretreatment agent to a fabric drawn from a raw fabric, and the distance between the glue roller and the doctor roller The manual adjustment device for adjusting the amount of coating by adjusting the amount of the liquid and the manual adjustment device connected to the manual adjustment device and the bearing members provided at both ends of the doctor roller using the drive source. The amount of application applied to the fabric is adjusted by moving the bearing member by a predetermined distance without moving the apparatus.

  According to a second aspect of the present invention, the fabric to which the pretreatment agent is applied is conveyed with the conveyance path below the gluing roller, and the gluing roller coincides with the conveyance direction of the fabric at the position where the pretreatment agent is transferred and applied to the fabric. The doctor roller is also rotated in the same direction as the gluing roller.

  According to a third aspect of the present invention, a pretreatment agent is held in a valley formed by a gluing roller and a doctor roller, and a doctor blade unit is provided on the doctor roller so as to be movable up and down. It is characterized by not overflowing in the direction of rotation of the doctor roller.

According to a fourth aspect of the present invention, the cloth on which the pretreatment agent is applied by the glue roller is conveyed to the conveyance direction side, and the surface on the side where the pretreatment agent is not applied to the upper delivery rollers arranged above and below. Then, the pretreatment agent is leveled into a uniform application state while being conveyed in a state where the surface on which the pretreatment agent is applied is wound around the lower delivery roller.

  According to the present invention, the doctor roller can be moved by a predetermined distance using a driving source while finely adjusting a desired application amount with a manual adjustment device, so that one-side adjustment is not required. Pre-processing can be performed. This makes it possible to increase the efficiency of the pretreatment without generating wasteful fabrics and pretreatment agents.

  Further, according to the present invention, the rotation direction of the roller is rotated in the direction in which the pretreatment agent is transferred and applied to the fabric in a direction corresponding to the conveyance direction of the fabric, and the doctor roller is also rotated in the same direction as the pasting roller. Therefore, foreign matter is not drawn between the glue roller and the doctor roller, and the machine can be prevented from being damaged. In addition, a doctor blade unit is provided so that the pretreatment agent does not overflow in the rotation direction of the doctor roller, so that stable pretreatment is possible.

Further, the cloth on which the pretreatment agent is applied by the glue roller is conveyed to the conveyance direction side, and the surface on the side where the pretreatment agent is not applied is wound around the upper delivery rollers arranged vertically. Since the surface on which the pretreatment agent is applied is wound around the lower delivery roller, the pretreatment agent applied to the fabric is stable without being uneven even when the cloth conveyance speed is increased. An apparatus capable of coating can be provided.

1 is an overall view of a pretreatment device for dyeing by an inkjet method of the present invention. (A) is the front view seen from the fabric introduction side, (b) is a left side view of (a), and illustrates the roller configuration. It is a figure explaining the mechanism for adjusting the application quantity of the pretreatment agent with respect to the fabric. It is explanatory drawing of the side view of the mechanism for adjusting the application quantity of a pretreatment agent. It is a figure explaining the mechanism which apply | coats a pretreatment agent. It is a figure explaining the mechanism which raises / lowers a doctor blade unit. It is a figure explaining the mechanism which raises / lowers a doctor blade unit. It is a figure explaining operation | movement of a rotating plate. It is a figure explaining the dam member of the side of the pretreatment agent hold | maintained at the gluing roller 2 and the doctor roller 3. FIG. It is a figure explaining the conveyance route of the cloth of the pretreatment device of the present invention. It is a figure explaining the rotation direction of the pasting roller of a conventional pre-processing apparatus, and a doctor roller.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall view of a pretreatment apparatus for dyeing by the ink jet method of the present invention, FIG. 1 (a) is a front view seen from the fabric introduction side, and FIG. 1 (b) is the left side of FIG. The roller configuration and the like are shown in a plan view. FIG. 2 is a diagram illustrating a mechanism for adjusting the amount of pretreatment agent applied to the fabric, and FIG. 3 is an explanatory diagram of a side view of the mechanism for adjusting the amount of pretreatment agent applied. It is.

  The glue roller 2 is pivotally supported with respect to the pretreatment device 1, and the doctor roller 3 is pivotally supported on a bearing member 4 that can move back and forth with respect to the glue roller 2. (Refer to FIG. 2) A left screw thread portion 4a is fixed to the bearing member 4, and a female thread portion of the turning nut 5 is screwed into the screw portion 4a. The turning nut 5 is provided with a screw portion 5a of a right screw, and the female screw portion of the adjustment handle 8 is screwed into the screw portion 5a. Further, a turning cylinder 6 for turning the turning nut 5 is provided, and the lower end of the turning cylinder 6 is fixed by a metal fitting attached to the bearing member 4.

  The handle 8 is pivotally supported by a fixed nut 7 fixed to a frame (not shown) so as not to move in the left-right direction (the forward and backward direction of the doctor roller 3) shown in FIG. By doing so, the bearing member 4 is moved in the left-right direction of FIG. The latch claw piece 7a attached to the fixing nut 7 is fitted into the latch gear 8a of the handle 8, so that the rotation of the handle 8 is locked at every fixed angle, and the latch claw piece 7a is elastic. If the handle 8 is rotated by a deforming force, the handle 8 rotates. However, if the handle 8 is stopped, the handle 8 is fixed without being rotated by the latch claw piece 7a.

  The bearing member 4 having the above-described configuration may be provided at the left and right ends of the doctor roller 3 in the width direction, and may be configured to be able to advance and retreat by being fitted to a rail or the like (not shown).

  FIG. 4 is a view for explaining a mechanism for applying the pretreatment agent, and is a view showing the rotation directions of the glue roller 2 and the doctor roller 3. The glue roller 2 and the doctor roller 3 are clockwise in FIG. It is rotating in the direction. Then, the peripheral speed of the doctor roller 3 is made higher than the peripheral speed of the glue roller 2 so that no foreign matter is drawn between the glue roller 2 and the doctor roller 3.

  Further, since the rotation direction of the doctor roller 3 is the clockwise direction in FIG. 4 and the pretreatment speed is about 10 m / min, the pretreatment agent overflows to the right of the doctor roller 3. May end up. In order to prevent this, a doctor blade unit 9 that abuts near the top of the doctor roller 3 is provided.

  The doctor blade unit 9 has a blade frame 10 provided over the entire width in the width direction of the doctor roller 3 and a wear-resistant rubber blade 11 over the entire width in the width direction of the doctor roller 3 as shown in FIG. The blade 11 is attached to the blade frame 10 with a plurality of screws so that the blade 11 is bent at an angle of 40 degrees.

  A load adjustment plate 13 is provided on the upper portion of the blade frame 10 and is screwed with a screw 15 to fix the position of the load adjustment plate 13 in the vertical direction with a nut 14 (double nut).

  As shown in FIG. 5, the edge of the blade frame 10 is installed so that the upper and lower guides 10a are fitted between the guides 1a and 1a attached to the pretreatment device frame (not shown) so that the blade frame 10 can move up and down. is doing. When installed, the blade 11 is bent as shown in FIG. 4 by its own weight, and the load adjustment plate 13 is placed on the adjustment plate 1b of the pretreatment device frame (not shown). By adjusting the position of the adjustment plate 13 up and down, the pressing force of the blade 11 to the doctor roller 3 can be adjusted.

  Further, the blade frame 10 is provided with ascending guides 10b in the vicinity of the left and right ends, respectively, and rotates a lifting handle 16 rotatably attached to a guide frame 1c attached to a pretreatment device frame (not shown). By doing so, the setting position can be easily switched between the state in which the blade 11 is in contact with the doctor roller 3 and the state in which the blade 11 is lifted away from the doctor roller 3.

  The elevating handle 16 is provided with a rotating shaft 16a, and is rotatably supported by the guide frame 1c. An elevating rotating plate 17 is attached to the tip of the rotating shaft 16a.

  As shown in FIG. 6, the rotating plate 17 has an arc-shaped elongated hole 17a centering on the rotation center of the rotating plate 17, a lifting roller 17d for lifting the pin 17b and the lifting guide 10b. A stopper pin 1d (see FIGS. 6 and 7) provided on the guide frame 1c is fitted, a spring 17c is attached to the pin 17b, and the other end of the spring 17c is connected to a pin provided on the guide frame 1c. It is attached.

  FIG. 7 is a view of the rotating plate 17 as viewed from the blade frame 10 side. FIG. 7A shows a state where the doctor blade unit 9 is in contact with the doctor roller 3, and FIG. The time when the doctor blade unit 9 is separated from the doctor roller 3 is shown.

  When the elevating handle 16 is rotated from the state of FIG. 7A, the rotating plate 17 rotates counterclockwise in FIG. 7 while the spring 17c extends, and the position of the elevating roller 17d moves up while moving. When the elevating handle 16 rotates to the state of FIG. 7B, the elevating roller 17d lifts the ascending guide 10b, so that the entire doctor blade unit 9 is raised, and as a result, the blade 11 is separated from the doctor roller 3. It is. As disclosed in FIG. 7 (a) or 7 (b), the stopper plate 1d is in contact with each end of the elongated hole 17a by the tension of the spring 17c, and the rotating plate 17 is fixed. It becomes.

  FIG. 8 discloses a state in which a dam member 18 is provided on the blade frame 10 so as to be slidable so that the pretreatment agent held on the gluing roller 2 and the doctor roller 3 does not spill in the lateral direction. The dam members 18 are respectively adjusted in position on the left and right according to the width of the fabric to be processed.

  FIG. 9 is a diagram showing a fabric conveyance path of the pretreatment device 1 of the present invention. The fabric to be preprocessed is held in the original fabric holding portion located in the lower right of FIG. 9, and is conveyed below the gluing roller 2 and the doctor roller 3 by changing the conveyance direction at the entrance stay 21, and below the gluing roller 3. And the pretreatment agent is transferred and applied.

  In the apparatus shown in Patent Document 1, since the cloth is sandwiched by the pressure roller, the cloth is conveyed in the horizontal direction after the pretreatment agent is applied by the glue roller. The winding angle was as small as about 23 degrees.

  Therefore, in the present invention, the wrapping angle of the fabric around the gluing roller 2 is set to about 70 degrees, and after application of the pretreatment agent, the upper feeding roller 22 and the lower feeding roller 23 are used as paths for conveying upward. Each of the fabrics is wound around and the applied pretreatment agent is leveled by the upper delivery roller 22 and the lower delivery roller 23 while applying tension.

  For example, in the case of a fabric having a large seam and a thin thickness, such as a banner, if the pre-treatment agent oozes out to the surface of the uncoated fabric surface when applied with the glue roller 2 on one side, as described above. About 70 degrees is wound around the glue roller 2 and the necessary amount of pretreatment agent is transferred and applied to the fabric without fail, and the upper delivery roller 22 smoothes the surface on which the pretreatment agent is not applied, and lower delivery. If the surface on which the pretreatment agent is not applied is leveled by the roller 23, a uniform pretreatment agent can be applied on both surfaces.

  In addition, if the fabric is thick and finely stitched and used for swimsuits, the pre-treatment agent is applied only to the front side (the side to which the pre-treatment agent is applied) by the gluing roller 2, and the upper feed roller 22. When the lower feed roller 23 is passed, the pretreatment agent applied to the front side is uniformly leveled. The method of pinching with a pressure roller is effective when the conveyance speed is slow. However, when the conveyance speed is high, the application surface may be mottled by returning to the surface tension of the part that presses and touches the roller. For this reason, the pressure is not applied and wound around the upper feed roller 22 and the lower feed roller 23, and transported and leveled.

  In order to ensure that the upper delivery roller 22 and the lower delivery roller 23 are wound around the upper delivery roller 22 and the lower delivery roller 23 to be uniform, a plurality of belts on the endless track are arranged at predetermined intervals on the downstream side of the conveyance of the upper delivery roller 22 and the lower delivery roller 23. A tenter device 24 may be provided for implanting the needle 24a and passing the needle through the vicinity of both ends of the fabric.

  Since the fabric is not slackened in the width direction by the needle 24a, both the left and right are transported. Even if there are portions where the fabric stretches and contracts due to unevenness in the fabric, there are differences in both ends. Thus, even if there is a portion where the expansion and contraction is different, the pretreatment agent is conveyed while being wound around the upper delivery roller 22 and the lower delivery roller 23 in a state in which the pretreatment agent does not become uneven. Even if it pre-processes using different pre-processing agents, it is the structure which can be apply | coated and conveyed stably.

  In the pretreatment device of the present invention, a drying device (not shown) is arranged downstream of the tenter device 24 shown in FIG. 9 in the cloth conveyance direction so that the fabric coated with the pretreatment agent is dried and wound. It is good to make it. In addition, when a highly viscous pretreatment agent is applied to a thick cloth made of a cotton material, a pressure roller unit described in Patent Document 1 is disposed on the downstream side of the tenter device. It is good also as a structure of arrange | positioning a drying apparatus downstream of a pressure roller part.

In the above description, the structure using the turning cylinder 6 is shown in FIG. 2. However, the turning nut 5 is changed to a gear and meshed with a gear attached to the shaft of a servo motor, or a belt is attached to both gears. It is also possible to make it possible to adjust the turning amount as a configuration in which is installed. Further, when the turning nut 5 is changed to a gear, the turning amount may be controlled by a rack or a drive source (for example, a direct acting servo system) that can be moved directly other than the cylinder. . Furthermore, instead of the above-described movement by rotation (turning) such as a nut or gear, a linearly moving member may be installed to directly position the bearing member 4 directly.

DESCRIPTION OF SYMBOLS 1 Pre-processing apparatus 1a Guide 1b Adjustment plate 1c Guide frame 1d Stopper pin 2 Glue roller 3 Doctor roller 4 Bearing member 4a Screw part 5 Turning nut 5a Screw part 6 Turning cylinder 7 Fixing nut 7a Latch claw piece 8 Handle 8a Latch gear 9 Doctor blade unit 10 Blade frame 10a Vertical guide 10b Lift guide 11 Blade 12 Mounting plate 13 Load adjustment plate 14 Nut 15 Screw 16 Lifting handle 16a Rotating shaft 17 Rotating plate 17a Long hole 17b Pin 17c Spring 17d Lifting roller 18 Weir member 21 Inlet Stay 22 Upper delivery roller 23 Lower delivery roller 24 Tenter device 24a Needle

Claims (4)

A pretreatment device for continuously applying a paste-like pretreatment agent to a fabric drawn from a raw fabric,
A manual adjustment device for adjusting the amount of application by adjusting the distance between the glue roller and the doctor roller;
By moving the bearing member by a predetermined distance without moving the manual adjustment device using a drive source, the bearing members connected to the manual adjustment device and provided at both ends of the doctor roller, A pretreatment device for dyeing by an ink jet method, wherein the amount of coating applied to a fabric is adjusted.   The fabric to which the pretreatment agent is applied is conveyed using a conveyance path below the gluing roller, and the gluing roller is rotated in a direction corresponding to the conveyance direction of the fabric at the position where the pretreatment agent is transferred and applied to the fabric. 2. The dyeing pretreatment apparatus according to claim 1, wherein the roller is also rotated in the same direction as the gluing roller.   The pretreatment agent is held in the valley formed by the glue roller and the doctor roller, and a doctor blade unit is provided in the doctor roller so that it can be raised and lowered. The pretreatment agent held in the valley overflows in the rotation direction of the doctor roller. The pretreatment device for dyeing by the ink jet method according to claim 2, wherein the pretreatment device is not provided.   The cloth on which the pretreatment agent is applied by the glue roller is conveyed to the conveyance direction side, the surface on which the pretreatment agent is not applied is wound around the upper delivery rollers arranged above and below, and then the lower portion 4. The ink jet method according to claim 2, wherein the pretreatment agent is leveled into a uniform application state while being conveyed in a state where the surface on which the pretreatment agent is applied is wound around the delivery roller. Pre-treatment equipment for dyeing.

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