JP2004115971A - Tentering apparatus of woven fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a tentering apparatus and make exchange of a cylindrical member simple. <P>SOLUTION: The tentering apparatus of a woven fabric arranged on the passage of woven fabric comprises a shaft extended in the width direction of the woven fabric, two pipes rotatably inserted into the shaft and arranged in the longitudinal direction of the shaft and a stopper for preventing movement of these pipes to the longitudinal direction of the shaft. The interval between the internal circumference of each pipe and the outer periphery of the shaft in a part on the center side in the width direction of woven fabric of the shaft is made smaller than interval between the internal circumference of each pipe and the outer periphery of the shaft in other part in the width direction of woven fabric of the shaft. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to an apparatus for tangling a woven cloth when the woven cloth is wound on a cloth winding roll.
[0002]
[Prior art]
As one of the woven cloth tentering devices provided in a loom, a plurality of cylindrical members are arranged around a shaft extending in the width direction of the woven cloth so as to be adjacent to the longitudinal direction of the shaft. There is one that presses a woven fabric (see Patent Document 1).
[0003]
In this tentering device, the cylindrical member is driven and rotated around the axis of the shaft by the woven fabric being moved while being tensioned in the moving direction of the warp while the cylindrical member is pressed against the woven cloth. Then, the width of the woven fabric is set. In this type of tentering apparatus, when a cylindrical member in contact with a woven fabric is worn, it is necessary to replace the cylindrical member.
[0004]
[Patent Document 1]
JP 2001-213555 A
[Problem to be solved]
However, in the technology described in Patent Document 1, since the cylindrical member is supported on the shaft by the bearing, the tentering device is complicated, and the work of attaching and detaching the cylindrical member to and from the shaft is complicated. Exchange is difficult.
[0006]
It is an object of the invention to make the device simple.
[0007]
[Solutions, actions, and effects]
The tentering devices according to the present invention are all disposed on the movement path of the woven fabric.
[0008]
A first tentering device according to the present invention comprises: a shaft extending in the width direction of a woven fabric; two pipes rotatably inserted through the shaft and arranged in the longitudinal direction of the shaft; A stopper for preventing movement of the pipe in a direction. The interval between the inner peripheral portion of each pipe and the outer peripheral portion of the shaft at the central portion in the width direction of the woven fabric of the shaft is the same as that of the other portion in the width direction of the woven fabric of the shaft. It is smaller than the distance between the peripheral portion and the outer peripheral portion of the shaft.
[0009]
In the first tentering device, the woven fabric placed on the loom and tensioned is hung on the pipe such that the longitudinal direction of the shaft is the width direction of the woven fabric. When the loom is operated in this state, the pipe is rotated around the axis of the shaft in a state where the pipe is prevented from moving in the longitudinal direction with the movement of the woven fabric.
[0010]
Each pipe has a gap between an inner peripheral portion of the pipe and an outer peripheral portion of the shaft such that a portion of the inner peripheral surface located on the woven fabric side is in contact with an outer peripheral surface of the shaft due to a tension applied to the woven fabric. Displaced relative to the shaft by an amount.
[0011]
At this time, in the first tentering device, in the interval between the inner peripheral portion of each pipe and the outer peripheral portion of the shaft, the interval of the central portion in the width direction of the woven fabric of the shaft is larger than the interval of the other portions. Since the pipes are small, the end portion of the shaft in the width direction of the woven fabric is displaced more largely than the center portion.
[0012]
As a result, the portion of each pipe that is in contact with the woven fabric is further away from the axis of the shaft toward the center from both ends in the width direction of the woven fabric of the shaft. The portion of the woven fabric that has a larger diameter toward the center always acts as a convex roller. As a result, the woven fabric is moved while being hung on the pipe, so that the woven cloth is stretched out by the pipe and wrinkled.
[0013]
According to the first tentering device, since each pipe is rotated by the woven fabric at a speed corresponding to the moving speed of the woven fabric, the moving speed of the woven fabric and the peripheral speed of each pipe become substantially the same, and Friction damage is less likely to occur between the cloth and each pipe.
[0014]
In addition, since the pipe is inserted through the shaft without using a bearing and is kept immovable in the longitudinal direction of the shaft by the stopper, the structure of the device is simplified, thereby facilitating replacement of the pipe. .
[0015]
The outer diameter of a portion on the center side in the width direction of the woven fabric of the shaft may be larger than the outer diameter of another portion in the width direction of the woven fabric of the shaft. The inner diameter of each pipe may be smaller at a central portion in the width direction of the woven fabric of the shaft than at other portions in the width direction of the woven fabric of the shaft.
[0016]
A second tentering device according to the present invention comprises: a shaft extending in the width direction of a woven fabric; two pipes rotatably inserted through the shaft and arranged in the longitudinal direction of the shaft; A stopper for preventing movement of the pipe in a direction. The stopper has adjusting means for adjusting an arrangement position of the pipe in a longitudinal direction of the shaft. The two pipes have outer dimensions that gradually decrease at the same rate of change from the central part to the end part in the width direction of the woven fabric of the shaft, and have the same maximum outer diameter dimension. Have.
[0017]
According to the second tentering device, not only the same operation and effect as in the first tentering device can be achieved, but also another pipe may be arranged between the pipes. The length can be changed according to the fabric width.
[0018]
A third tentering device according to the present invention is a shaft extending in the width direction of the woven fabric, which is symmetrically curved from a center portion to both ends in the width direction of the woven fabric, and the curved convex portion is provided. , A plurality of pipes rotatably inserted through the shaft and disposed adjacent to each other in the longitudinal direction of the shaft, and a stopper for preventing movement of the pipe in the longitudinal direction of the shaft. And
[0019]
According to the third tentering device, each pipe is arranged in a curved shape along the shaft, and collectively acts on the woven fabric as a convex roller having a diameter that is larger toward the center side. The same operation and effect as described above can be obtained.
[0020]
In any of the above-described woven fabric tentering apparatuses, the pipes may be adjacent to each other, and end faces that change in the longitudinal direction of the shaft in a direction opposite to each other with a change in the circumferential direction. With this configuration, the position of the boundary between adjacent pipes reciprocates in the weaving width direction with respect to the woven fabric with the rotation of the pipe, so that the trajectory of the boundary between the pipes with respect to the woven fabric meanders. As a result, since the warp due to the boundary portion between the adjacent pipes is not formed at the same position in the weaving width direction and meanders, the warp does not stand out and the quality of the woven fabric is not impaired.
[0021]
In any of the above tentering apparatuses, a plurality of types of pipes having at least one of a length dimension, an outer diameter dimension, a state of an outer peripheral surface, and a material different from each other are prepared, and pipes according to the type of the fabric are arranged on a shaft. May be used.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Referring to FIG. 1, a tentering apparatus 10 is disposed on a moving path of the woven fabric 12 to the cloth winding roll 14 in order to wind the woven cloth 12 woven by a loom (not shown) on the cloth winding roll 14. Is done.
[0023]
The woven fabric 12 is led out substantially horizontally from the side of the beating device, is hung on a guide roll 16, is turned substantially downward, and is passed between the clothes roll 18 and the two nip rolls 20.
[0024]
The woven fabric 12 is wrapped around the wrapping roll 18 and the two nip rolls 20, 20 in the order of one nip roll 20, the wrapping roll 18, and the other nip roll 20. 18 against the outer peripheral surface.
[0025]
The woven fabric 12 is further hung on a guide roll 22 spaced downward from the clothing roll 18, and then hung on a spiral roll 24 for wiping the woven fabric prior to the tentering device 10. Is done. The spiral roll 24 has grooves having inclination angles in different directions at one end side and the other end side of the woven cloth 12 at the center part in the width direction of the woven cloth as a boundary. By rotating in the feed direction, the width of the woven fabric 12 is set.
[0026]
After passing through the spiral roll 24, the woven fabric 12 is further tentered by the tentering device 10 rotatably assembled to the pair of left and right press roll brackets 26. Thereafter, the woven fabric 12 is wound around the cloth winding roll 14 while being pressed toward the cloth winding roll 14 by the press roll 28 rotatably assembled to both press roll brackets 26.
[0027]
Rolls 16, 20, 22, 24, and 28 are driven rollers that are rotated in the movement direction of the woven fabric 12 following the movement of the woven fabric 12, and the movement direction of the woven fabric 12 in synchronization with the movement of the woven fabric. It may be any of the drive rollers rotated.
[0028]
The two press roll brackets 26 are spaced from each other in the weaving width direction of the woven fabric (the left-right direction of the loom), and are arranged at one end so as to be pivotable (swinging) to the loom by the support shaft 30. The other end supports the tentering device 10 and the press roll 28.
[0029]
At least one of the press roll brackets 26 is connected to one end of a pusher 32 having a pressing force generating member such as a fluid pressure cylinder by a pivot 34, and the pressing force of the pusher 32 turns the press roll 28 into the cloth winding roll 14. It is energizing. Thereby, the woven fabric 12 is pressed against the cloth winding roll 14 by the press roll 28. The other end of the pusher 32 is swingably attached to a frame 36 of the loom by a pivot 38.
[0030]
Referring to FIG. 2, the tentering device 10 includes a shaft 40 having a circular cross-sectional shape, and a plurality of shafts 40 (in the illustrated example, rotatably arranged around the shaft 40 and adjacent to each other in the longitudinal direction of the shaft 40). (Two) pipes 42 and a pair of stoppers 44 for preventing the pipes 42 from moving in the longitudinal direction of the shaft 40.
[0031]
As shown in FIG. 2 (A), the shaft 40 is formed by assembling a collar 48 around a round bar-shaped shaft member 46 extending linearly (not intentionally subjected to bending or the like) so as not to rotate and move. I have.
[0032]
The collar 48 is attached to a central region of the shaft member 46 in the width direction of the woven fabric by appropriate means such as welding or screws. For this reason, the outer diameter D1 of the shaft 40 at the central portion in the width direction of the woven fabric is larger than the outer diameter D2 of both ends of the shaft 40.
[0033]
Each pipe 42 is made of a resin material such as hard vinyl chloride, and has the shape of a hollow cylinder whose inner diameter D3 is substantially the same in the axial direction of the pipe 42.
[0034]
The inner diameter D3 of each pipe 42 is slightly larger than the outer diameter D1 of the collar 48 so as to be rotatably inserted through the shaft 40. For this reason, coupled with the fact that D1 is larger than D2, the gap between the outer peripheral surface of the shaft 40 and the inner peripheral surface of each pipe 42 in FIG. Is smaller than the gap {(D3-D2) / 2} of the other part (the part on the longitudinal end side of the shaft 40) where the collar 48 is not disposed. small.
[0035]
Adjacent pipes 42 are in contact with end faces 50, 50 that change in the longitudinal direction of the shaft in the opposite direction along with the change in the circumferential direction. In the illustrated example, the opposed end surfaces 50, 50 are inclined surfaces having a predetermined angle with respect to the axis of the shaft 40. A so-called arc-shaped chamfer is applied to the outer peripheral corners of the opposed end faces 50, 50 so as not to damage the woven fabric 12.
[0036]
Each stopper 44 has a positioning ring 52 as a stopper member through which the end of the shaft 40 penetrates, and is detachably assembled to the end of the shaft 40 by a bolt 54 as a position adjusting member.
[0037]
The stoppers 44 move the positioning ring 52 to a predetermined position of the shaft 40 so as to allow the two pipes 42 to rotate with respect to the shaft 40 but prevent the two pipes 42 from moving in the longitudinal direction of the shaft 40. And the positioning ring 52 is attached to the shaft 40 with the bolt 54 at that position, whereby the positioning is performed with respect to the shaft 40. Thus, the positioning of the two pipes 42 with respect to the shaft 40 is performed.
[0038]
The tentering device 10 is rotatably or non-rotatably supported by the press roll bracket 26 shown in FIG. 1 at each end of the shaft member 46 so that the longitudinal direction of the shaft 40 is the width direction of the woven fabric 12. . Thereafter, the woven fabric 12 to which the tension is applied partially contacts the outer peripheral surfaces of both pipes 42, and displaces both pipes 42 in the radial direction as shown in FIG. 2B.
[0039]
When the loom is operated in the above state, at least the pipes 42 are moved along the axis of the shaft 40 with the movement of the woven fabric 12 in a state where the two pipes 42 are prevented from moving in the longitudinal direction of the shaft 40 by the two stoppers 44. Is rotated around.
[0040]
Due to the tension applied to the woven fabric 12, a portion (particularly, a turned portion of the woven fabric 12) of the inner circumferential surface of each pipe 42 contacts the outer circumferential surface of the shaft 40 due to the tension applied to the woven fabric 12. In this manner, the shaft 40 is displaced toward the axis of the shaft 40 with respect to the shaft 40 by the gap between the inner peripheral portion of the pipe 42 and the outer peripheral portion of the shaft 40.
[0041]
At this time, in the tentering device 10, the gap 隙間 (D3-D1) in the center of the woven fabric 12 of the shaft 40 in the width direction of the gap between the outer periphery of the shaft 40 and the inner periphery of each pipe 42. ) / 2} is smaller than the gap {(D3-D2) / 2} at the other portion, and as shown in FIG. 2 (B), each pipe 42 is located on the end side of the woven fabric 12 of the shaft 40 in the width direction. The part is displaced more than the central part.
[0042]
FIG. 1 shows that the woven fabric 12 that moves obliquely downward toward the two pipes 42 in a state of being lowered left is wound around the left portion (the upper portion in FIG. 2B) of the outer peripheral surfaces of the two pipes 42. The pipes are turned and turned, and further, move diagonally from both pipes 42 to the lower right. As is clear from FIG. 2B, both pipes 42 are inclined such that the central portion of the shaft 40 in the width direction of the woven fabric 12 is convex toward the turning portion of the woven fabric 12. .
[0043]
As a result, the portion of each pipe 42 that is in contact with the woven fabric 12 is further away from the axis of the shaft 40 as it goes from both ends in the width direction of the woven fabric 12 of the shaft 40 toward the center. In cooperation, the diaper 12 always acts on the woven fabric 12 as a convex turning roller having a larger diameter toward the center. As a result, the woven fabric 12 is moved in a state of being hung on the pipe 42, and is thereby stretched out by the pipe 42 to remove wrinkles.
[0044]
As a result, according to the tentering device 10, each pipe 42 is rotated by the woven fabric 12 at a speed corresponding to the moving speed of the woven fabric 12 in a state where the movement of the shaft 42 in the longitudinal direction is disabled. Therefore, the moving speed of the woven fabric 12 and the peripheral speed of each pipe 42 become substantially the same, and the woven fabric 12 and each pipe 42 are hardly damaged by friction.
[0045]
Further, since the pipe 42 is disposed around the shaft 40 without using a bearing and is kept immovable in the longitudinal direction of the shaft 40 by the stopper 44, the structure of the device 10 is simplified and , Which facilitates replacement of the pipe 42.
[0046]
As described above, if the opposed end faces 50, 50 of the two pipes 42 change oppositely in the longitudinal direction of the shaft 40 along with the change in the circumferential direction, the boundary between the two pipes 42 (the opposed end face 50). , 50) is reciprocated in the weaving width direction with respect to the woven fabric 12 with the rotation of the pipe 42, so that the locus of the boundary portion of the pipe 42 with respect to the woven fabric 12 is meandering. As a result, the warp due to the boundary between the two pipes 42 meanders without being formed at the same position in the weaving width direction, so that the warp does not stand out and the quality of the woven fabric 2 is not impaired. In the embodiment, both end surfaces 50, 50 are changed in the opposite direction by being inclined with respect to the longitudinal direction of the shaft 40.
[0047]
The shaft 40 and both pipes 42 of the tentering device 10 can be variously changed.
[0048]
For example, as shown in FIG. 3, an intermediate pipe 60 may be arranged between the pipes 42,42. This tentering device can use the pipe 60 having a length dimension corresponding to the width dimension of the woven fabric 12, and is effective when the width dimension of the woven fabric 12 is large.
[0049]
Each end face of the pipe 60 is inclined with respect to the longitudinal direction of the shaft 40 similarly to the opposite end face 50 of the adjacent pipe 42, and is opposed to and abuts on the end face 50 of the adjacent pipe 42. By doing so, the locus of the boundary portion between the opposed end faces 50, 50 of the pipes 42, 42 and the end face of the pipe 60 is meandered, and the warp of the woven fabric 12 is made inconspicuous.
[0050]
As shown in FIG. 4, instead of disposing the collar 48 shown in FIGS. 2 and 3 on the shaft member 46, the shaft member 46 itself is used as the shaft 40, and the facing end faces of the pipes 42 and 42 shown in FIGS. The annular surfaces 62 may be formed by machining on the inner peripheral portions on the 50, 50 side, and the collars 64, 64 made of a resin such as hard vinyl chloride may be pressed into or bonded to the annular surfaces 62 to form the pipes 42, 42. Note that the inner diameter of the collars 64, 64 is larger than the outer diameter of the shaft 40 and smaller than the inner diameter of the pipe 42.
[0051]
Instead of the above, as shown in FIG. 5, the shaft member 46 itself is used as the shaft 40, and the inner diameter of the pipes 66, 66 is changed to the woven fabric 12 of the shaft 40 while the outer diameter is substantially the same. In the width direction from the end to the center. In other words, the outer peripheral surfaces of both pipes 66, 66 have the same diameter, but the inner peripheral surface of both pipes 66, 66 has a smaller diameter at the central portion in the width direction of woven fabric 12 of shaft 40. It may be conical.
[0052]
As shown in FIG. 6, the shaft member 46 itself is used as the shaft 40, and the outer diameters of the two pipes 68, 68 are set in the width direction of the woven fabric 12 of the shaft 40 while the inner diameters thereof are substantially the same. May be reduced in size from the center to the end. That is, the inner peripheral surfaces of the two pipes 68, 68 are larger than the outer diameter of the shaft 40 and have the same outer diameter, but the outer peripheral surfaces of the two pipes 68, 68 are the end portions in the width direction of the woven fabric 12 of the shaft 40. It may be a frusto-conical shape having a smaller outer diameter toward the side.
[0053]
Further, as shown in FIG. 7, in the embodiment shown in FIG. 6, an intermediate pipe 70 may be arranged between the two pipes 68, 68, so that the width of the woven fabric 12 can be changed.
[0054]
Further, as shown in FIG. 8, a shaft member 46 is bent into an arc shape to form an arcuately curved shaft 40, and the shaft 40 is non-rotatably attached to both press roll brackets 26 shown in FIG. A plurality of short pipes 72 having an inner diameter larger than the outer diameter may be inserted into the shaft 40 and rotatably disposed.
[0055]
Both end surfaces of the plurality of pipes 72 are inclined surfaces inclined with respect to the longitudinal direction of the shaft 40. By doing so, it is possible to suppress the occurrence of warping of the woven fabric 12 at the boundary between the opposed end faces 50 of the adjacent pipes 72.
[0056]
A plurality of tentering devices using the shaft 40 and the pipes 42, 60, 66, 68, 70 or 72 may be assembled to the press roll bracket 26. FIG. 9 shows a state in which three tentering devices 10 each using the shaft 40 and the pipe 42 are assembled to the press roll bracket 26.
[0057]
Further, instead of making the facing end faces 50 of the adjacent pipes 42, 60, 66, 68, 70, 72 be inclined surfaces with respect to the axial direction of each pipe, for example, a saw-tooth shape shown in FIG. 10B, and end faces of other shapes that change in the longitudinal direction of the shaft 40 in the longitudinal direction of the shaft 40 in accordance with changes in the circumferential direction, such as a corrugated opposite end face 50 as shown in FIG. It may be.
[0058]
Generally, the change of the woven fabric width is performed with reference to one of the right and left sides of the loom, the position of the end of the woven fabric 12 on the other side is changed, and the position of the center of the woven fabric 12 is moved. It is necessary to obtain the same width-extending effect on the left and right sides of the woven fabric 12. For this purpose, both positioning rings 52, 52 are moved, and the respective pipes 42, 42 are arranged symmetrically with respect to the center of the woven fabric 12. Further, in the embodiment of FIG. 2, it is preferable that the collar 48 constituting the shaft 40 is further moved by loosening the screw so that the center of the collar 48 coincides with the center of the woven fabric 12.
[0059]
The present invention is not limited to the above embodiments, and can be variously modified without departing from the gist thereof.
[Brief description of the drawings]
FIG. 1 is a side view of the vicinity of a cloth winding device of a loom provided with a tentering device according to the present invention.
FIGS. 2A and 2B are longitudinal sectional views of the tentering apparatus shown in FIG. 1, in which FIG. 2A shows a state in which a woven cloth is not hung on a pipe, and FIG. FIG.
FIG. 3 is a longitudinal sectional view showing a modified example of the shaft and the pipe shown in FIG. 2;
FIG. 4 is a longitudinal sectional view showing another modified example of the shaft and the pipe shown in FIG. 2;
FIG. 5 is a longitudinal sectional view showing still another modified example of the shaft and the pipe shown in FIG. 2;
FIG. 6 is a longitudinal sectional view showing still another modified example of the shaft and the pipe shown in FIG. 2;
FIG. 7 is a vertical sectional view showing still another modified example of the shaft and the pipe shown in FIG. 2;
FIG. 8 is a longitudinal sectional view showing still another modified example of the shaft and the pipe shown in FIG. 2;
FIG. 9 is a longitudinal sectional view showing still another modified example of the shaft and the pipe shown in FIG. 2;
10A and 10B are front views showing modified examples of the pipe shown in FIG. 2, wherein FIG. 10A shows an example in which the shape of a facing end face with which adjacent pipes come into contact has a saw-tooth shape, and FIG. An example is shown in which the shape of the facing end face with which the contact is made is wavy.
[Explanation of symbols]
D1 Outer diameter of a portion on the center side in the width direction of the woven fabric of the shaft D2 Outer diameter of a portion on the end side in the width direction of the woven fabric of the shaft D3 Inner diameter of the pipe 10 Width setting device 12 Woven fabric 40 Shafts 42, 60, 66, 68, 70, 72, 78 Pipe 44 Stopper 46 Shaft member 48, 64 Collar 50 Opposite end surface 52 of pipe Stopper member 54 Adjusting bolt 62 Ring surface

Claims (6)

A woven cloth tentering device arranged in a woven cloth path,
A shaft extending in the width direction of the woven fabric, two pipes rotatably inserted through the shaft and arranged in the longitudinal direction of the shaft, and a stopper for preventing movement of the pipe in the longitudinal direction of the shaft; Including
The interval between the inner peripheral portion of each pipe and the outer peripheral portion of the shaft at the central portion in the width direction of the woven fabric of the shaft is the same as that of the other portion in the width direction of the woven fabric of the shaft. A woven fabric tentering device that is smaller than a gap between a peripheral portion and an outer peripheral portion of the shaft. The tentering apparatus according to claim 1, wherein an outer diameter of a portion of the shaft on the center side in a width direction of the woven fabric is larger than an outer diameter of another portion of the shaft in a width direction of the woven fabric. 2. The tentering apparatus according to claim 1, wherein the inner diameter of each pipe is such that a portion of the shaft on the center side in the width direction of the woven fabric is smaller than other portions of the shaft in the width direction of the woven fabric. A woven cloth tentering device arranged in a woven cloth path,
A shaft extending in the width direction of the woven fabric, two pipes rotatably inserted through the shaft and arranged in the longitudinal direction of the shaft, and a stopper for preventing movement of the pipe in the longitudinal direction of the shaft; Including
The stopper has adjusting means for adjusting an arrangement position of the pipe in a longitudinal direction of the shaft,
The two pipes have outer dimensions that gradually decrease at the same rate of change from the central part to the end part in the width direction of the woven fabric of the shaft, and have the same maximum outer diameter dimension. A woven cloth tentering device. A woven cloth tentering device arranged in a woven cloth path,
A shaft extending in the width direction of the woven fabric, which is symmetrically curved from a center portion to both ends in the width direction of the woven fabric, and a shaft having the curved convex portion as the woven fabric side,
A plurality of pipes rotatably inserted through the shaft and arranged adjacent to each other in the longitudinal direction of the shaft;
A stopper for preventing movement of the pipe in a longitudinal direction of the shaft. The tentering apparatus according to any one of claims 1 to 5, wherein the pipes are adjacent to each other, and end faces that change in opposite directions in the longitudinal direction of the shaft with a change in a circumferential direction are opposed to each other.

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