KR910002513B1 - Method and apparatus for compressive shrinkage - Google Patents

Abstract

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Description

Compression shrinkage processing method and apparatus for circular knitted paper

1 is a perspective view showing the entire multifunction machine incorporating a compression shrinkage processing apparatus such as circular knitted fabric according to the present invention.

FIG. 2 is an enlarged cross-sectional view of the processing device for compressive shrinkage in the multifunction machine shown in FIG. 1, showing a feed roller, a braking roller, a carry-on shoe and a carry-out shoe.

3 is a side view of the compression shrinkage processing apparatus in the multifunction machine shown in FIG. 1, showing the structure of the compression shrinkage processing apparatus.

4 is a partially cut-away perspective view showing the means for attaching the carry-on and shoe-binding shoes, and the means for attaching the carry-on-keeping shoes.

5 is a front view showing in detail the carrying-out shoe and the carrying-in shoe.

6 is a sectional view taken along line 6-6 of FIG.

7 is a schematic diagram of a drive control system of the multifunction apparatus of FIG.

* Explanation of symbols for main parts of the drawings

10: compression shrink multifunction machine 11: untreated forge

21,22: Steam box 23: Compression Contractor

24; Compressed Forge 28: Bearing Support

30: Sending roller 32: Braking roller

36: operating rod 44: restraint shoe complex

46,71: restraint section forming blade 69: braking shoe construct

70: main body of the braking shoe 76: angle

77: mounting bracket

TECHNICAL FIELD This invention relates to the improvement of the method and apparatus of compression shrink processing of cloth products. The present invention specifically relates to processing circular knitted fabrics, but is not limited thereto, and is also applicable to processing knitted or unwoven rough fabrics.

One of the most widely used compression shrinkage methods for the processing of knitted fabrics such as meriyas, especially circular knitted fabrics, is disclosed in U.S. Patent Nos. 3,015,145, 3,015,146, 3,083,435 to Eugene Cohn et al. A method is mentioned. As the Maryas shrinking method disclosed in this patent, one or a plurality of compression contraction apparatuses are used, and each compression contraction apparatus has a pair of opposing rollers and one sending restraint shoe. In this apparatus, the conveyed paper passes between the feed roller and the restraint shoe, and is reliably sent at a preset speed. The roller (braking roller) forms a nip in addition to the sending roller, and the forge coming out of the restraint shoe is brought into contact with the sending roller and the braking roller in a pressed state. A braking roller driven at a surface speed slower than the surface speed of the feed roller slows the progress of the paper, and the paper is compressed in the longitudinal direction in a short compression contraction section formed between the roller nip and the end edge of the paper binding shoe. Preferably, the shoe and / or rollers are heated to effectively perform compression shrinkage of the forge in the compression shrinkage section.

Although such a compression shrinkage processing method is widely used, there are some limitations such that a plurality of rollers having different speeds act simultaneously on both sides at the same position of the forge. Thus, the finish of both sides of the forge is necessarily slightly different. In addition, an undesired surface may be formed depending on the type of fabric due to the slip of the feed roller to the paper surface in the roller nip. For example, if you want a dark-dyed top cloth, or a bottom cloth shines brightly, you will find it very difficult to go round circular fabrics in which both sides of the cloth become finished garments during processing. It becomes a problem.

If only one type of compression shrinkage device of this type is used, the property of unbalanced effects on both sides of the forge may be eliminated by providing two compression shrinkage devices in the reverse direction. In other words, a satisfactory result may be obtained depending on the type of fabric. However, in the case of a fabric that is susceptible to, for example, a dark-stained top cloth, difficulties remain. The present invention is to provide a method and apparatus for automatic compression shrinkage processing of circular knitted fabrics in which the advantages of the differential roller-type processing technology can be utilized to the maximum in order to minimize or eliminate the difficulty of the conventional processing method.

In the method and apparatus of the present invention, a method of conveying and braking the forge is provided by the feeding rollers and the braking rollers opposed to each other, which are driven at a high surface speed and a low surface speed, respectively. However, the apparatus of the present invention is different from the apparatus disclosed in the above-mentioned US patent, and the distance between the sending roller and the braking roller is much larger than the thickness of the forge to be processed, so that each roller does not come into contact with both sides of the forge at the same time. It is. Each end of the forge confinement shoe (conveying shoe) correlated with the feeding roller and another constraining shoe (carrying side shoe) correlated with the braking roller is opposed to each other, and a space is set between these ends to form a confining section. The forge is decelerated at the entrance of the restraint section, compressed in the longitudinal direction, and guided while being restrained for a predetermined residence time during passage of the restraint section.

In addition, both ends of each restraint shoe are located almost at the maximum converging portion (the narrowest portion) between the feed roller and the brake roller, and the angle to the surface of the feed roller is approximately 45 degrees. As a result, the forge coming out of the discharge end of the carry-on shoe is rapidly changed in direction by the front end of the carry-on shoe, and guided to the restraint section formed between the two shoes. As the forge emerges from the restraint section, a braking roller that rotates at a surface speed slower than the surface speed of the feed roller comes into contact with the outer surface of the forge.

Although the surface speeds of the feeding roller and the braking roller are different, both rollers do not touch and act at the same position on both sides of the paper at the same time, so there is no fear that the roller surface will cause slip on both surfaces of the paper. Therefore, according to the present invention, the highly efficient automatic compression shrinkage processing required for many knitted fabrics can be performed with one compression device. In addition, the pressure applied to the thickness direction of the forge at the time of passage of the restraint section is minimized to a minimum. As a means for this, a precision suspension adjustment mechanism is provided so that one shoe (preferably, a shoe on the carrying side) can be positioned with a certain degree of swing. This makes it possible to adjust the change in the thickness of the restraint section during the normal operation of the apparatus. The restraint pressure applied to the forge in the restraint section is such that it is possible to prevent the crimping of the forge compressed in the longitudinal direction.

As a honeycomb of an embodiment of the present invention, on the basis of the above-mentioned US patent, it has a structure having a commercially available multifunction device as a parent and having compatibility therewith. As a result, the device of the present invention can be easily retrofitted and assembled using a number of conventional mechanisms, and the performance of the device can be greatly upgraded for at least a predetermined type of fabric.

Example

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, and the advantages and features of the present invention will be described more clearly.

First, referring to FIG. 1, reference numeral 10 denotes the whole compression shrinkage multifunction machine for circular knitting. The untreated pouch 11 sent from the source (not shown) is stretched and spread as it passes over the rotating bow-shaped rod 12, so that it is generally flat and stacked in two layers. The forge continues to pass under the first tensile rod 13 and passes over the second tensile rod 14. Both tension bars 13 and 14 are separated by a spacer 15 and are attached to the frame 16 positioned at an angle. In addition, the tension rods 13 and 14 regulate the forge to have a flat shape and serve to give a slight tension to the forge.

In the illustrated multifunction machine, the forge passes through a guide roller 17 (FIG. 7), a driven variable speed control roller 17a, a floating dancer roller 17b and a series of flattening rolls 20. The control roller 17a serves to pass the raw paper 11 over the bow-shaped rod 12 and between the tension rods 13 and 14. The speed of the roller 17a is controlled by the dancer roller 17b in relation to the operating speed of other components (described later) of the multifunction apparatus.

Under the control roller 17a, a propeller stretching device 18 is provided. As an example, the propeller stretching apparatus is of the type disclosed in US Pat. No. 4,103,402 to Frezza, shown below. Here, the word "down" refers to the opposite direction to the direction of the forge, and the word "up" refers to the direction of the forge.

This stretching apparatus is equipped with the internal frame (not shown) which supports a forge inside. The frame is horizontally supported by the grooved drive ratio 19, and the grooved drive roll 19 is freely adjusted in the width direction of the frame and driven externally by a power mechanism. The stretching device composite 18 is known and sent to the carry-on side of the series of flattening rolls 20 above, a pair of steam boxes 21 and 22 and the compression shrinker 23 below the drive rate 19. Installed between the rolls.

As is known, a slight excess supply is provided below the inner frame of the stretching apparatus which extends the conveyance paper (i.e., below the drive ratio 19), and it is only held loosely in the longitudinal direction and kept at a predetermined width. In this state, the maryas is passed between the steam boxes 21 and 22 to be humidified and lubricated, and the looseness of the knitting is adjusted to complete the preparation for the primary compression contraction process. The letter immediately enters the compression contraction device 23 exiting the stretching device 18, and is compressed in the longitudinal direction by a process described later by a predetermined amount as a water irrigation of the intrinsic residual shrinkage of the conveyance paper. In the case of circular knitted fabrics, the shrinkage is 15-20%. The paper paper 24 compressed in the longitudinal direction is conveyed to the aggregation section 25. In the case of the multifunction device shown, a reeling device is employed. This rewinder is of the type disclosed in U.S. Patent No. 3,606,186 to Eugene Cohn et al. Or U.S. Patent No. 2,736,098 to Samuel Cohn. The roll conveyed toward the take-up device 25 is subjected to a minimum tension such that the roll 26 makes it easier to wind the paper.

Instead of the take-up mechanism, the folding device disclosed in US Pat. No. 4,053,151 to Frezza may be employed as an example.

The driving mechanism of the multifunction apparatus of FIG. 1 is shown in FIG. The condenser 25, the compression shrinkage device 23, the propeller drawing device 18 and the carry-in roll 17a are respectively driven so as to be speed-controlled separately. In the drive formation, a variable speed motor may be arranged in each of the above devices, or an automatic variable speed drive mechanism may be combined with the mid-speed drive motor 31 in order to adjust a desired speed. In general, one device structure (e.g., a compression contraction device 23) is used as a "central" device, and driven by a motor 31, and the operation speed of another device is automatically dependent on the motor 31. As shown in FIG. As an example, the driven half roller 17a, the drive roller 19, and the take-up device 25 are driven by the central drive motor 31 through the adjustable variable speed mechanisms 17c, 19a, and 25a. The variable speed mechanism 17c is controlled by the dancer roll 17b and sequentially supplies the forge to the propeller stretching device 18. According to this knitting, when the speed of the compression contraction device 23 increases by 10%, the speed of other devices also increases by 10%. The change in the speed of the take-up device 25 changes in correspondence with the speed of the compression shrink device 23, and is independent of the other devices. This technique is a known technique.

Next, the novel compression contraction apparatus of the present invention will be described in detail with reference to FIGS. The bearing support 28 is attached to the frame frame 27 (FIG. 3), and the bearing support 28 supports the bearing block 29 on both sides of the apparatus. The bearing block 29 bears the material of the feed roll in a rotatable state. In the illustrated configuration, the sending roller 30 is fixedly attached to the frame 27 axially, and is capable of rotating to the center shift drive motor 31 (FIG. 7).

The brake roller 32 is correlated with the feed roller 30. The brake roller 32 is supported by the bearing support 33 on both sides, and the bearing support 33 is supported by the swinging frame 34 attached to both sides in the frame 27. The rocking frame 34 swings around an axis of the drive shaft 35. Both rocking frames 34 are connected to the actuating rods 36 of the fluid actuator, which are moored in the 38 position on either side of the frame of the device. Preferably, the fluid actuator is operated in one direction, and the actuating rod 36 is pushed to the left in FIG. 3 or retracted by the control of the fluid pressure so that the actuating roller 36 is retracted by the actuating rod 36. To pull the roller to send (30).

The automatic variable speed drive mechanism 39 (FIG. 7) driven by the central drive motor 31 serves to rotate the braking roller 32 at a surface speed slower than the surface speed of the sending roller 30. The drive mechanism 39 drives the sprocket 40 (FIG. 3), and is attached to the shaft 35, which is the swing shaft of the frame 34 with rollers, through the chain or belt 41. Another sprocket 42 is driven. A separate chain or belt (not shown) connecting the shaft 35 to the brake roller 32 connects the shaft 35 and the brake roller 32 and drives the brake roller at the swing position of the frame 340. I'm making it.

In a preferred embodiment of the present invention, the diameter of the feed roller 30 is about 12.7 cm. The feeding roller 32 has a hollow structure, and the wall 43 thereof is a cylindrically forced wall having a thickness of about 3.2 cm, and preferably, the surface of the sending roller 30 is configured to firmly hold the loading paper 11. Take a rough shape. The feed roller 30 is associated with a restraining shoe complex (hereinafter referred to as a shoe) 44 composed of a shoe body 45 and a restraint section forming blade 46, and a shoe body 45 constituting one shoe complex. ) And the blade body 46 is formed with cylindrical smooth inner surface portions 47 and 48 corresponding to the outer surface of the feed roller 30, respectively. This cylindrical inner portion 47,48 is slightly larger than the diameter of the sending roller (e.g., about 12.7 + 0.13 cm for 12.7cm in diameter of the sending roller), and the center of the cylindrical inner portion 47,48 is shown in FIG. As shown, the center of the roller deviates to the right side of the liver, whereby the preliminary restraint interval 49 is formed. By this predecessor interval 49, the conveyance forge 11 is guided and restrained to the discharge end of the shoe composite via the circular arc surface (about 90 degrees) of the feed roller 30.

The attachment mechanism of the fetch shoe composite 44 is almost the same as that disclosed in US Pat. No. 3,973,303 to Edmund A. Diggle, Jr. The attachment mechanism is provided with a pair of upward brackets 50 rotatably attached to both end portions 51 of the feed roller 30 within a certain limit. This bracket 50 is connected to the rod 53 which can be adjusted in the vertical direction via the connector 52. The rod 53 is positioned by the operator adjusting the handwheel 54 (FIG. 1). By slightly adjusting the rod 53 in the vertical direction, the bracket 50 can be swung slightly in the clockwise or counterclockwise direction about the shaft center of the shaft 51, so that the position of the carrying shoe can be precisely adjusted.

The L-shaped brackets 55 are axially held at 56 positions of the upward bracket 50, respectively, and are swinged with respect to the upward bracket 50 by both single-acting air cylinders 57. When the rod 58 of the air cylinder 57 is retracted by the pressure decrease, the L-shaped bracket 55 swings clockwise in FIG. Moreover, when the rod 58 of the air cylinder comes out by the pressure increase, the bracket 55 swings in the counterclockwise direction.

The carrying-in shoe structure 44 of the L-shaped bracket 55 is attached via the swing shaft support 59. Inclined adjustment protrusions 60 are provided on both sides of the carrying shoe composite 44, and the protrusions protrude through the window holes 61 of the brackets 55, and the adjustment bolts are formed in the window holes 61. 62, 63).

In explaining the operation principle of the mounting bracket composite of the carrying shoe, the shoe composite 44 is assumed to be in the starting position as shown in FIG. If necessary, by adjusting the bolts 62 and 63, the shape of the new and tight restraint interval 49 can be adjusted so that the entire shoe structure 44 is inclined about the axis of the swing shaft support 59. The whole shoe composite body 44 adjusts the shaft 53 in the vertical direction, and swings the upward bracket 50 about the shaft center of the feed roller 30 so that the center of the feed roller 30 is centered. It can swing in the circumferential direction. By doing so, it is possible to adjust the position of the lower end of the sender shoe composite and to control the thickness of the restraint section. By reducing the pressure of the air cylinder 57, the sending shoe component is retracted from the roller nip between the sending roller 30 and the braking roller 32, and the L-shaped bracket 55 is clockwise about the axis 56. Swings. This opens the processing zone of the compression shrinkage device and makes it easier to bring the forge into the first device.

In the compression shrinkage processing apparatus of the present invention, as in the case of the automatic compression shrinkage processing apparatus disclosed in the above-mentioned US patent of Eugene Cohn et al. It has no thickness at the bottom of it. In the case of compressive shrinkage processing of a circular knitted cloth having a width of 1.27 m, the thickness of the lower end of the blade 46 is about 3 mm. The bottom surface 66 of the constrained section forming blades faces downward, and forms a relatively steep angle at the surface of the sending roller 32, which forms an angle of about 45 degrees in the illustrated embodiment. This inclined surface 66 is constituted by one side of the restraint section as described below.

The restraint section forming blade 46 is fixed to the main body 45 of the carrying shoe by inserting a plurality of bolts 67 at regular intervals according to the width of the blade shaped as shown in FIGS. 5 and 6. The shoe body 45 is composed of a plurality of shoe dividing pieces, and can control each shoe dividing piece individually for each attachment frame 68 to perform final precision control of the confined section forming blade 46. .

The composite 69 of the carrying-out shoe provided under the carrying-in shoe 44 is comprised by the shoe main body 70 and the restraint section forming blade shape 71. As shown in FIG. The blade body 71 is formed with a curved front surface 72 and a curved rear surface 73 like the blade body 46 described above, and face the surfaces of the feed roller 30 and the braking roller 32, respectively. At least the elongated rear surface 73 has a substantially similar shape corresponding to the surface contour of the braking roller 32 over a predetermined arc (15-20 degrees), and passes through the passage so that the end of the forge conveyed by the braking roller is spread out. Forming. As an example, the radius of the surface 73 is about 6.35 cm to correlate with the braking roller 32 having an outer radius of about 6.25 cm, and the center of the radius of the surface 73 is shown in FIG. The contour of the forge carrying passage is slightly diverted forward by pulling slightly to the left from the center of the brake roller 32. Figure 2 exaggerates this.

As shown in Figs. 2 and 6, the upper end surface portion of the constrained section forming blade 71 and the lower end surface boolean of the upper blade 46 are in contact with each other. The thickness of the blade end portion 74 is about the same (about 3 mm as an example). The inclination angle of the upwardly confining section forming surface 75 is the same as the surface 66 described above.

The compression shrinkage processing apparatus shown in the drawing enables a retrofit of a conventional facility, and the braking shoe structure 69 is precisely attached to an angle 76 having both ends fixed to the attachment bracket 77. On both sides of the angle 76, covers 78 are fixed by welding, and these covers 78 are fixed to the brackets 77 by bolts 78a. The main body portion 70 of the braking shoe is welded to one side of the angle 76, and a concave portion 80 which receives the restraint section forming blade 71 is provided. The blade body is in contact with the bottom surface of the blade body 71 through the shoe body 70 upwardly through the vertical direction hole 82 of the blade shape. In the case of a forage device having an upper limit of 1.27m, attaching bolts 81 are attached at intervals of about 6.6 cm. This makes it possible to align the lower restraint section forming blade 71 with a high degree of precision with respect to the upper restraining stem forming blade 46, and the bottom face 66 of the upper blade form and the upper face 75 of the lower blade shape. It is possible to precisely form the processing section formed by.

In the device shown, an angle steel composite is pivotally attached to frame 27 by shaft 84. The shaft 84 is supported by the frame 27 via the attachment block 85 on both sides. The attachment block 85 is integrated with the bearing support 28. The above attachment method is a convenient method. That is, the shaft 84 and the block 85 are attached to the existing commercially available machinery, and the shaft 84 and the block 85 can be used to improve the apparatus of the present invention.

The position of the swing shaft 84 with respect to the distribution weight of the angle 76 and the attachment bracket 77 is such that the composite of these two members swings clockwise by gravity in FIG. 6, and the lower restraint section forming blade The ciliary body 71 is set to swing to the feeding roller 30. This oscillation motion is a range in which a constant minimum distance is maintained between the curved front surface 72 and the sending roller 30 of the blade body 71. The adjustment for this is performed by limiting the closing movement of the blade 71 by inserting a neck piece (not shown) at the end of the sending roller, or as shown in Figure 6 by attaching the adjustment bolt 86 to the bracket ( 77). Preferably, the counterclockwise swing of the blade 71 is not limited within the range in which contact with the apparatus can be avoided. Therefore, by installing the long hole 87 at the end of the bracket 77 and inserting the restriction pin 87a therein, the bracket 77 is installed in response to the positioning of the adjusting bolt 86 and / or the control neck piece. It swings within the range of (87). Further, of course, it is limited by the existence of the braking roller 32.

The inclined end edges 65 and 75 of the restraint section forming blades 46 and 71 are located almost at the maximum converging portion (the narrowest portion) of the roller for the start adjustment of the device. That is, it is located in the surface containing the axis line of both rollers. The protruding end of the lower plate 71 is close to the outer surface of the sending roller 30 but is not grounded. Adjust the vertical rod 53 to adjust the position of the upper plate 46 relative to the lower foot plate 71, and install a slight gap between the restraint section forming surfaces 66 and 75, Slightly wider ahead. The upper plate 57 is filled with air pressure in the range of almost 0 to about 352 g / cm 2, and acts as a piston of about 2580 cm 2. As an example, in the case of a forging compression processing device within a width of 1.27cm, if the opening and closing force used in the actuator 57 is 90.7kg at a maximum, a force of about 200g per cm may be added.

Next, the operation of the compression shrink processing apparatus according to the present invention described above will be described. The flat 11 and undefined width 11 enters the restraint passage 49 and is subjected to some restraint pressure by the rough surface of the feed roller as it passes through the passage. In the case of the circular knitted fabric, the middle layer of two layers, and in the case of the other fabric, the single layer of paper passes through the passage 49 at the surface speed of the sending roller 30.

When the forge reaches the lower edge of the elongated surface 48, the forge is rapidly changed in direction by the role of the blade surface 75, and enters into the restraint section formed between the surfaces 65 and 75. The restraint section is widened in a small amount, for example within 1 °.

The forge passes through the restraint section (approximately 4.3 mm in the illustrated device), changes its direction rapidly in contact with the outer surface of the braking roller 32, and changes the curved surface 73 and the braking roller of the unloading shoe composite. Enter into the confinement passage 89 formed between the outer surface of the. As soon as the forge enters the upper end of the restraint braking passage 89, it becomes at the surface speed of the braking roller 32. The surface speed of the brake roller 32 is controlled by the variable speed mechanism 39 so as to rotate at a surface speed slower than the surface speed of the feed roller 30 by a ratio of 15-20% or less depending on the type of the artillery. . In the steady state, the speed of the forge is switched to the braking conveying speed at the inlet of the restraint section formed by the faces 66 and 75. Immediately thereafter, the forge is heated and constrained during the residence time of the given restraint section.

In the compression shrink processing method of the present invention, it is preferable to reduce the restraint pressure in the thickness direction at the restraint section as much as possible. However, if there is no restraining pressure at all or too low, the appearance of the forge is not "shrinked" smoothly, but "corrugated wrinkles" are achieved. Therefore, the thickness of the restraint section is initially adjusted slightly larger than the optimum value with the handwheel 54 and the rod 53 to cause wrinkles, and while the state of the processed fabric is observed, the restraint section is restrained with the handwheel until the wrinkles disappear. Reduce the thickness of the section.

In the illustrated device, a metal layer of roughly roughened surface may be used on the surface of the braking roll, forming an elastic layer having a thickness of about 6 mm. Under the pressure controlled by the variable pressure regulator 92, the braking roller 32 has a net additional force applied to the restraint surface 73 by a certain amount of pressure applied to the fluid actuator 37, in the restraint section. It may be of a size sufficient to secure effective frictional contact of the emerged fabric and to securely grasp the fabric. Experience has shown that this additional force should be of a minimum required amount, as in the case of the required contact pressure between the feed shoe composite and the feed roller. If necessary, an adjustable limit stopper (not shown) can be provided and the closing movement of the brake roller towards the restraining surface 73 of the lower blade can be restricted. Normally, as shown in FIG. 2, the feed roller and the brake roller make a spacing slightly larger than the thickness of the restraint section forming blades 46 and 71. As shown in FIG.

Usually, the conveyance forge is heated and humidified by blowing steam into the steam boxes 20 and 21. Further preferably, at least the sending roller 30 and the sending shoe composite are provided with means for heating. As in the conventional apparatus, the carry-on shoe composite may be heated by an electric heater connected to the shoe body. The feed roller 30 is heated inside by, for example, steam or heating oil. Preferably, it is preferable to provide a heat medium that eliminates the temperature difference between the feed roller 30 and the feed shoe composite 44.

This invention is not limited to the above-mentioned embodiment, Of course, it can be applied and used in various forms, unless it deviates from the claim.

According to the method and apparatus of the present invention, great results can be obtained. That is, although compression shrink processing was conventionally performed using two apparatuses, according to the present invention, it is possible to process more effectively with one apparatus.

In this respect, the apparatus for compressing and shrinking circular knitted fabric with one apparatus is the same as the conventional technique, but the conventional apparatus and method have very low export control performance. The compression shrinkage processing method and apparatus disclosed in the patents of the known Eegene Cohn et al. Have the performance of imparting high efficiency compression shrinkage (i.e., 25% and higher). It is appropriate to use two compression shrinkage devices to finish the appearance of both sides equally, and there are some limitations in the forge which is easily affected. In contrast, according to the method and apparatus of the present invention, it has one compression shrink processing device, and extremely good finishing can be performed on both sides of the fabric, and compression shrink processing of 25% or more can be performed. This is a remarkable development compared to conventional methods and apparatus.

One of the features of the present invention is that the sending roller, the braking roller, and the braking roller are separated by a slight gap larger than the thickness of the forge by the inclined restraint section. For this reason, the feeding roller and the braking roller rotating at different surface speeds do not touch the same position on both sides of the paper at the same time. Also, during the compression shrinkage processing, the forge is not twisted and the direction is not reversed. The forge passes through the carry-in section with minimum restraint pressure and friction, and both sides remain almost balanced, pass through the restraint section, and continue to contact the braking section and restrain to the minimum pressure, but slip It does not cause it.

According to the apparatus of the present invention, since there is a close relationship between the compression shrinkage and the rotational speed difference between the feed roller and the braking roller, the forge does not cause any slip between the feed roller and the braking roller. In other words, by setting the roller rotation speed difference to 25%, normal shrinkage processing of 25% can be applied to the paper.

Moreover, according to the method and apparatus of the present invention, the thickness of the paper subjected to compression shrinkage processing can be made almost the same as the thickness before the processing. In the conventional apparatus, since the paper is compressed in the thickness direction, the thickness of the paper after processing is sometimes 15-25% smaller than before processing. However, in the method and apparatus of the present invention, as the thickness after the processing of the paper is handled smoothly through the whole, it is possible to obtain a very satisfactory finishing result even in the case of easily affected paper.

According to the method and apparatus of the present invention, since there are very few processing differences between the two sides of the circular knitted fabrics which are stacked and processed in two layers, that is, the finishing operations of both sides of the circular knitted fabrics rarely change, it is most suitable for the processing of circular knitted fabrics. One compression shrink processing device can be provided with confidence. In the apparatus of the present invention, even for each easy forge of the sending shoe and the braking shoe, processing can be performed in detail and finish can be performed according to the demand of the buyer.

Another advantage of the method and apparatus of the present invention is that shrinkage compression processing can be carried out with extremely low power consumption. In addition, the occupied area of the apparatus is very small because the compression shrinkage processing step is not one but two steps.

In the apparatus of the present embodiment, the compression shrinkage section forms an angle of 45 degrees with respect to the adjacent roller surface. However, the upper limit and the lower limit of this angle are not fixed but may be in the range of 30 to 60 degrees.

It goes without saying that the method and apparatus of the present invention are also applied to papers other than circular knitted fabrics, and also to rough knitted fabrics such as compressible gauze.

In addition, the method and apparatus of the present invention, as an example, are subjected to compression shrinkage processing after the dyeing and other processing with a working solution and squeezed up to 75-80% moisture. It applies to "wet compression". In the conventional apparatus, high pressure must be applied to the forge, and in some cases, wet compression cannot be performed because the processing liquid leaks out from the compression contraction portion. According to the method and apparatus of the present invention, since the contact pressure required for processing is very small, the exuding processing liquid in the compression shrinkage processing step can be minimized and reduced.

Claims (12)

(1) a carry-on roller, and (2) a carry-on side having an outer surface substantially corresponding to the surface of the feed roller, and together with the feed roller surface to form a constrained carry-in passage through which the feed is controlled by the feed roller. (3) adjustable positioning means for positioning the carry-on constrained shoe and the forge conveying roller so as to be relatively adjustable so that a predetermined control pressure can be applied to the forge constrained in the carry-in passage. And (4) a forge braking roller rotatably attached to and parallel to the feed roller, and (5) a feed roller and a braking roller approaching each other at a plane passing through both shaft centers of the feed roller and the brake roller. Means for setting a zone, and (6) a discharge passage having an outer surface corresponding to the surface of the braking roller, together with the braking roller surface, to which the forge is controlled and discharged by the braking roller. (7) An adjustable position capable of regulating the carrying-out restraint shoe and the braking roller to be relatively relatively positioned so that a predetermined control pressure can be applied to the forge restrained in the carrying-out passage. (8) a blade-shaped protrusion formed on each of the two restraint shoes between the feed and braking rollers and opposed to a plane passing through both shafts of the rollers; and (9) the blade shape. Compression contraction processing such as circular knitted fabrics, which is formed between opposing surfaces of both projections, and the forge is a compression contraction restraint section that becomes a restraint control passage between the carry-in passage and the export passage. Device. The compression contraction processing apparatus according to claim 1, wherein the compression contraction restraint section formed between the two restraint shoes is provided to form an angle of approximately 45 degrees with respect to the surface of the feed roller. The method of claim 2, wherein one of the two restraint shoes is attached to be able to swing within a predetermined range around the axis of the rollers associated with each other, and the thickness of the restraint section is increased or decreased. Compression shrink processing equipment. The compression contraction processing apparatus according to claim 1, wherein the amount adjustable positioning means comprises a fluid actuation means and a pressure regulating means for the fluid actuation means. 2. The apparatus of claim 1, further comprising an adjustable positioning device capable of moving each of the blade-shaped protrusions relative to or away from each other, wherein the thickness of the restraint section is a corrugated wrinkle of the forge passing through the restraint section. Compression shrink processing device, characterized in that made to be kept thick to prevent. The compression shrinkage processing apparatus according to claim 1, further comprising means for heating the feed roller and the carry-on restraint shoe. The compression shrinkage processing apparatus according to claim 1, wherein the feed roller is made of metal, and the outer surface is roughened so as to reliably grip the forge. 8. The compression contraction processing apparatus according to claim 7, wherein the brake roller is made of an outer surface having elasticity. (1) conveying the forge in a flat and humid state, (2) bringing one side of both sides of the forge into contact with the driven feed roller surface, and constraining the other side of the forge in close contact with a predetermined pressure, Conveying while controlling the forge, (3) stop the restraint of the abandonment quickly, change the direction of the forge to acute angle at the roller surface, and (4) the restraint section having a length greater than the thickness of the forge (5) Immediately thereafter, the surface of the driven roller, which rotates at a surface speed slower than that of the sending roller, is supported by abutting the other side of the forge, and (6) at the first contact position of the forge. (7) restrain the forge against the surface of the brake roller under a predetermined control pressure, and (8) within the constraint section Compressive shrinkage processing methods, such as circular knit Forge, characterized by consisting of a step of adding a binding of the file as not to form wrinkles on both surfaces of the opposite occurs. 10. The compression shrinkage processing method according to claim 9, wherein (1) heat is applied to said paper during conveyance, and (2) heating is controllably on both sides of the paper. 10. The method of claim 9, wherein the forge is guided through the restraint section at an angle of about 45 degrees to the surface of the feed roller and a distance of about 4 mm. 12. The method of claim 11, wherein (1) the forge is made of circular knitted fabric, and (2) the circular knitted fabric is widened to a predetermined prescribed width in the transverse direction, and is humidified and conveyed with steam while maintaining the specified width. Compression shrink processing method.

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