JPS6099067A - Press shrinking method and apparatus of fiber cloth - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel method and apparatus for mechanically preshrunk textile fabrics, particularly knitted fabrics. This device utilizes some of the fabric shrinkage techniques described in U.S. Pat. Secured at one end, the sheet and its free end pass between the drum and a continuous felt Φ belt that goes around the drum.The fabric is introduced into the nip formed between the Teflon coated fiberglass sheet and the felt belt; There it is topographically or pre-contracted.

Although the compression shrinkage device described above is very effective and provides significant inherent cost savings in terms of equipment, operation, and investment, the degree of shrinkage of textile fabrics by the method and device is generally about 6 to 1.
Up to 2%. Although this may be sufficient for some purposes, there may be cases where more pre-shrinkage is required than is possible with the above-described devices. Accordingly, it is an object of the present invention to describe a compression contraction device that includes several aspects of the method and device described above, but which includes not only a single stage but also two stages to provide more contractions than previously possible. It has a structure that allows compression and contraction.

A device according to the invention for mechanically topographicing fabrics in the machine direction has a flexible belt and a guide and drive roll arrangement that partially bends the belt as it passes through its guide and drive roll arrangement; a device for guiding and driving the belt, the belt having a friction surface such that the outwardly facing surface of the loop engages the outer circumference of the fabric; Space apart to form a blue curved part number,
the guide and drive rolls forming a relatively straight section between the bends; a fusible spreadable sheet having a low friction surface; and one end of the flexible sheet adjacent the bend of the belt. means for anchoring and a force capable of pressurizing the sheet against the belt at a distance from a straight portion of the belt along the direction of movement of the belt to form a topographic area between the belt and the sheet; It is composed of a pressure device, a device for changing the amount of pressure applied by the pressure device, and a device α for moving a person to a topography area in order to topographically map the fabric.

According to one aspect of the present invention, the device for pressurizing the sheet to form the topographical zone between the belt and the sheet is a heatable flat member that transfers heat to the sheet to generate steam, so that the fabric is compressed into the sheet. Reduces the friction between the steam and the fabric as it passes over the fabric.

It is further contemplated by the present invention that when more topography is required, the use of a second filling means which is essentially similar to the topography method described in U.S. Pat. No. 4,156,955. If a second compacting means is used, the apparatus and means according to the invention may be adapted to transport said fabric in a relatively tension-free manner to the second means using the flexible sheet of the first compacting means; Minimize the tension on the topography.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings, FIG. 1 first shows a two-stage filling apparatus 10 constructed in accordance with the principles of the present invention. Device 10 includes a steam container 11 through which passes a fibrous fabric 12, such as a flat tubular knitted fabric that passes through an indwelling dilator as shown. This device has the advantage that it can also be used for open-layer knitted fabrics (single layer). The fabric moistened with steam passes through guide rollers 13 and then enters the first means 14 of the two-stage stuffing device according to the invention. The topography means 14 includes a continuous flexible belt 16, which in the illustrated embodiment is felt.

In other embodiments, the belt may be made of rubber or other suitable abrasive material. Belt 16 passes through rollers 17, 18 and 19, and the surfaces of rollers 17-19
It is made of rubber that frictionally engages with the inner surface of 6. roller 18
and 19 are drive rollers for rotating the belt 16 in the direction of the arrow.A blanket guide roll 20 is provided outside the belt loop to maintain the belt 16 in a centered position relative to adjacent members.

Below and adjacent the roller 13 is a cylindrical mounting and anchoring bracket 21 to which is secured one end of a flexible sheet 22 of Teflon coated fiberglass or equivalent construction. Sheet 22 is wrapped around bracket 21 and has a length extending substantially over the entire underside of horizontal portion 16' of flexible belt 16. Free end 2 of sheet 22
2' is supported as shown by a flat and sturdy seat support member 23, which member 23 is movable in and out of said horizontal portion 16' of the belt 16, and is mounted by a bracket 28.
The end 22' of the sheet is tightened into substantial contact with the adjacent surface of the belt 16 by a bolt 24.25 which is vertically movable within the groove 26.27 of the belt 16. This movement allows the pressure applied to the edge 22' of the sheet to be adjusted and ensures that the fabric does not ripple in the topography area. The heating member 29 is the supporting member 23
and heating the edge 22' of the sheet. A topographic zone is thus formed between the horizontal portion 16' of the belt and the edge 22' of the flexible sheet, through which said fabric 12 passes. The fabric 12 first moves around the curve 30 of the belt 16 formed by the curve of the roller, and then moves around the belt 1.
6 and then entering the topography zone as the fabric 12 advances further into the topography zone formed between the horizontal portion 16' of the belt and the edge 22' of the flexible sheet. The fabric 12 is traversed in its direction of travel according to known principles. Since the fabric is pre-moistened, the heat applied by the heating member 29 is applied to the edge 22' of the flexible sheet.
The fabric releases some of its moisture as vapor, which can be present as an additional lubricant since the Sea I.22 is Teflon-coated and non-Teflon coated. The device described above, that is, the topography means 14, can shrink or topography the fabric by 6 to 12% in the longitudinal direction, and the degree of topography can be changed to some extent by changing the curvature of the roller 19 and the thickness and material of the belt 16. I can understand what I'm getting.

Immediately adjacent to the topography means 14 there is a topography means 15 which comprises a heated drying drum 31 surrounded by a continuous felt belt 32, the felt 0 belt running in the direction of the arrow and the drum running clockwise. The rotating drum 31 drives the belt 32, and rollers 33 and 34 support such movement of the belt. An anchoring bracket 36 is provided immediately above the roller 34, and the sheet 22 is attached to the lower end of the anchor bracket 36.
The ends of a flexible sheet 37, which has the same structure as , are fixed. The remaining portion of the sheet 37 is interposed between the drum 31 and the drum-contacting side of the belt 32, and the free end 37' of the sheet 37 and the drum 31 are in frictional contact, and as the drum rotates, the sheet 37 is diluted. This dilution, in conjunction with the tension in belt 32 and its contact with drum 31, creates a nip between belt portion 32' and sheet portion 37'.

After passing through the nip of the topography means 14, the fabric 12 travels between the belt 32 and the flexible sheet 37, bending at a curvature determined by the rollers 34, and into the nip area between the belt section 32' and the sheet section 37'. enter. The fabric 12 is retraced as it passes through this nip area.

A small space 38 is provided between the end of the sheet 22 and the beginning of the sheet 37 so that the gap through which the fabric 12 passes through the space and the tension applied to the fabric 12 can be considered. The slightly downward curve shown in the figure indicates that the fabric 12 is substantially tension-free. If the fabric 12 is taut in the space 38, this indicates that it is under longitudinal tension, indicating that at least some of the topography of the fabric by the topography means 14 has been removed or tensioned.

FIG. 2 shows a modified embodiment according to the invention. Since the apparatus of FIG. 2 is substantially the same as the mechanical structure described in FIG. 1 except for the use of two flexible seams (22.37), the The same reference numbers will be used for In the embodiment of FIG. 2, a single sheet 40 is anchored to bracket 21 in the same manner that sheet 22 is secured to bracket 21. However, the sheet 40 extends lengthwise around the roller 41 and its end 40' extends along the drum 31 and is interposed between the felt belt 32 and the drum.

Thus, in the apparatus of FIG. 2, the fabric 12 is first traversed in the space of the nip area formed between the lower portion 16' of the flexible belt 16 and the portion 40' of the flexible sheet 40. Fabric 12 then advances along the upper surface of sheet 40 (as shown in FIG. 2) and into the nip area formed by portion 40' of sheet 40 and portion 32' of felt belt 32. As the fabric 12 passes from the first compacting means to the second compacting means, the fabric exits into the space 38' and the degree of tension on the fabric can be observed.

Normally, the fabric will be in a state of undulating waves if there is no substantial tension, but since the sheet 40 force from below supports the fabric, it is not affected by the weight of the fabric. When moving over the sheet 40 toward the soil filling means,
There is no tendency for the fabric that has been topographically mapped by the first means of the device to be stretched and unshrinked.

The device shown in FIG. 1 is preferable to the device shown in FIG. 2 because the topography of the fabric is carried out on each side of the fabric by each means.
Since it slips against 37, it is not possible to finish only one side.

For the reasons mentioned above, the device shown in Figure 2 may not be desirable1.
1) illustrates the basic principle of the invention in that the fabric is substantially supported by a flexible topography sheet throughout the length of the gap through which the fabric passes through the two-tiered topography means. The apparatus of FIG. 2 is advantageously used when a non-tubular fabric is slid on only one side of the flexible sheet 40.

Next, FIGS. 3 and 4 show another method and apparatus for restraining the fabric and pressurizing the flexible sheet forming the topographic area. In the apparatus of FIGS. 3 and 4, conventional endless rubber A belt 50 passes around rollers 51 and 52 (one or both of which are drive rollers) and around a small diameter roller 53. A frame 54 supports roller 53 for rotation within it and supports roller 56. , 57 and 58 are supported. Rollers 56-58 are positioned against the inner surface 50a of belt 50 to prevent deflection of the belt in the area they surround. A frame or bracket 59 is provided on the outside of the loop. A flexible sheet attachment rod 60 is provided inside the frame 59 and fixed to the frame with a pin 61.
rotation relative to the frame 59. A flexible sheet 62 made of Teflon-coated fiberglass according to the teachings of U.S. Pat. 60a with end portion 62a fixed and attached so that the remaining portion of flexible sheet 62 passes along the outside of belt 50 adjacent to roller 53 and around its top (as shown in FIG. 3). do. After passing through the dilator 66, the fabric 65 enters between the outer surface 50b of the belt 50 and the inner surface 62a of the sheet 62. The illustrated embodiment illustrates a tubular fibrous knitted material.

In the illustrated embodiment, the sheet 62 is the outer surface 5 of the belt 50.
0b and extends to a distance somewhat beyond the location of roller 57. In the area adjacent to the roller 53 and extending laterally to a position approximately adjacent to the roller 57, the device forms a topography area for topography of the fabric 56 according to known principles. The fabric frictionally engages the outer surface 50b of the rubber belt 50 and is tracked between the belt 50 and the sheet 62 after passing around the arc formed by the belt 50 and rollers 53. The degree of topography is a function of the bamboo skewer provided by the rollers 53, and the topography is maintained in the topography area between the outer surface 50b of the belt 50 and the inner surface 62m of the sheet 62 as long as the sheet 62 prevents ripples of the fabric in the topography area. It is done. This prevention device will be described.

A box beam 67 and a holding member 6 are immediately adjacent to the topographic area.
A device consisting of 8 and expandable silver 69 is provided. The box beam 67 and silver 69 extend longitudinally across the entire width of the fabric to be geographed.

The ends (not shown) of the beam 67 can be secured to adjacent frame members (not shown), and the retainer 68 can be slid along the beam and positioned to hold the silver 69 in place. Accordingly, air or other suitable fluid (which can be heated to generate steam from the wet fabric as it passes through the topography area) is connected to the fluid connection lower.

The pressure of the fluid inside the silver 69 causes the silver to expand against the beam 67 and the surface 62a of the sheet 62. The pressure exerted by the silver 69 on the sheet 62 must be sufficient to prevent ripples of the fabric in the topography area. This pressure can be applied accurately under various conditions, such as topography speed, fabric thickness, etc., so that the necessary level of uniform topography can be achieved. 50 provides a low-friction firm support against the pressure exerted by the silver 69 so that the belt 50 does not deflect under the pressure exerted by the silver 69. In the embodiment shown, the roller 53 is quite small and therefore the The curvature of the belt is more significant than if the rollers were of larger diameter. A large curvature results in a larger topography in the topography area and it is therefore very important to hold the flexible sheet 62 firmly and securely against the fabric as it passes through the topography area. The silver 69 is itself flexible and can conform to the surface of the Toro 2 over the entire width of the fabric, which varies somewhat depending on the properties of the fabric and the amount of topography occurring in the topography area.

Although it is possible for the fabric to be topographically mapped with the apparatus of FIGS.
Since the curvature ζJ of Therefore, it should be understood that these are merely representative examples.

[Brief explanation of the drawing]

FIGS. 1 and 2 show a topography device provided with a two-stage topography section according to the invention. Figures 3 and 4 show a single-stage topography section with an expansion device for pressurizing the flexible sheet over the topography area-strip. Procedural amendment (1) 1925//month 2nd day 16th Y-Geigo 3, relationship with the person making the amendment ip' 4, agent

Claims (1)

[Claims] 1. A flexible belt and a guide and drive roll device that partially bends the belt as it passes through the guide and drive roll device; , a device disposed inside a curved closed loop for driving, said belt having a friction surface such that the outwardly facing surface of said loop engages the surface of the fabric, and said belt having a curved portion. said guide and drive rolls being spaced apart and forming a relatively straight section between said curved portions; and a flexible spread sheet having a low friction surface adjacent said curved portions of said belt. means for anchoring one end of the flexible sheet;
By pressurizing the sheet against the belt so as to maintain a certain distance from the straight part of the belt along the moving direction of the belt, the darkness 1r of the belt and the S note (
It is characterized by a pressurizing device capable of shaping an illumination area, a device for changing the amount of pressure applied by the pressurizing device, and a device for introducing the fabric into the geographical area and compacting it. A device that mechanically packs fabric vertically. 2. The device of claim 1, wherein the pressure device is a flat, relatively inflexible member. 3. The device according to claim 1, wherein the pressurizing device is made of expandable, expandable silver. 4. The device according to claim 1, wherein the pressurizing device is heated to generate steam in the geographical area. Device. 5. A heated drying drum, a device for rotating the drum, a continuous flexible blanket surrounding a large area around the drum, and a continuous flexible blanket for drying the fabric as it is conveyed to the drum. and a device for introducing the fabric between the blanket and the blanket; a flexible spread sheet having a low friction surface; introducing the free end of the sheet between the blanket and the drum; Claims comprising a device for introducing the flexible sheet between the blanket and the blanket after passing through a bend in the blanket, and then forming a nip between the blanket and the sheet for further traversing the fabric. Range 1 equipment. 6. Apparatus according to claim 5, wherein said sheet is in two parts, one part of which is anchored adjacent to a device for introducing the fabric into a drying drum. 7. The sheets are spaced apart by a short distance, through which the fabric passes without being supported by either sheet, and the length imparted to the fabric before being traversed in a second nip area. 7. A device as claimed in claim 6, adapted to induce and indicate the degree of directional tension. 8. A means for passing the fabric around a flexible belt in a state of frictional engagement from a curved path to a straight path, and a means for pressing the fabric against the straight portion of the belt with a low friction sheet to move the fabric into the straight path. and applying pressure to the sheet over the topography area and varying the applied force to adapt the speed of movement of the fabric to the thickness of the fabric and the degree of topography. 9. A method according to claim 8, including means for heating said fabric and generating steam over said topographical area. 10. The method of claim 8, comprising submitting the fabric to a second compacting means and conveying the fabric substantially tension-free to the first compacting means.