KR101033168B1 - Folding device of pipe lining bag - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding apparatus for a pipe lining bag before a thermosetting resin is impregnated into a nonwoven fabric of a pipe lining material used for repairing a pipe such as a water supply pipe or a sewage pipe, To a folding apparatus for a pipe lining bag which enables automatic production of a nonwoven fabric.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a folding apparatus of a tube lining bag,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding apparatus for a pipe lining bag before a thermosetting resin is impregnated into a nonwoven fabric of a pipe lining material used for repairing a pipe such as a water supply pipe or a sewage pipe, To a folding apparatus for a pipe lining bag which enables automatic production of a nonwoven fabric.

A conventional method for manufacturing a pipe lining bag includes a folding process in which a plate-shaped nonwoven fabric having a plastic film on one side thereof is folded in a width direction by folding along a longitudinal direction thereof, a sewing process for sewing the folded edge to form a tubular nonwoven fabric, The sewing edge is expanded and unfolded, the swivel is extended, and the coating process is applied to the extended sewing portion.

However, in the folding process, since the operator folds and presses the sheet nonwoven fabric one by one, a lot of workers are needed, and the folding operation time is also long, resulting in low productivity. In addition, when the length of the pipe lining bag is long, productivity is lowered because the factory space needs to be folded little by little when the space is narrow.

In addition, as in the folding process, the expanding process is also reduced in productivity because the operator grasps both sides and kneads with a rubber hammer.

In addition, since the coating process coats the stretched portion in the stretched process, when the stretched portion is less extended, the coating is lifted from the sewing portion and is likely to be used during the resin impregnation process.

In addition, the coating process must be carried out by aligning the center of the sewing section with the coating nozzle. When the center is not aligned, it is troublesome to stop the work and perform the work while holding the tube lining bag at the front after aligning the center.

Further, since there is no device for pulling the pipe lining bag in the longitudinal direction in the coating process, the work is performed while pulling the worker, so that the pulling degree is uneven and more workers are needed.

Further, since the folding process and the expanding process are manually performed, it is difficult to continuously perform operations from the folding process to the coating process, thereby further lowering the productivity.

It is an object of the present invention to provide a folding device for a pipe lining bag capable of automatically producing folded nonwoven fabrics as a folded nonwoven fabric.

In order to achieve the above object, in a folding apparatus for a pipe lining bag according to claim 1 of the present invention,

A supporting roller portion for supporting a plate-shaped nonwoven fabric having a film on one surface thereof; The horizontal guide roller unit includes a folding roller that folds a nonwoven fabric sheet in a plate shape passing through the support roller unit into two folds, and a nonwoven fabric that passes through the folding roller unit in a horizontal direction And a horizontal guide roller for conveying the sheet.

According to this configuration, the sheet-like nonwoven fabric can be folded automatically, and the productivity can be improved.

According to a second aspect of the present invention, there is provided a folding apparatus for a pipe lining bag,

Preferably, the folding roller is disposed vertically with respect to the receiving roller portion when viewed from the top, and the receiving roller portion is elevated by the elevating portion.

According to this configuration, the folding posture is good, and the height can be adjusted by raising and lowering, so that the work can be smoothly performed without taking up a lot of work space.

According to a third aspect of the present invention, there is provided a folding apparatus for a pipe lining bag,

When the width direction guide pieces for guiding the width direction of the folded nonwoven fabric are further mounted on the support roller portion and the horizontal guide roller, the folding operation is performed accurately and the operation speed is fast.

As apparent from the above description, the present embodiment has the following effects.

The sheet-like nonwoven fabric can be folded automatically by disposing the horizontal guide roller portion under the support roller portion supporting the nonwoven fabric having the film on one surface thereof, thereby improving the productivity.

Further, since the horizontal guide roller portion is disposed perpendicularly to the receiving roller portion as viewed from the upper surface, and the receiving roller portion is elevated by the elevating portion, the folding posture is good and the height of the elevating and lowering can be adjusted. Work is possible.

Further, by attaching the width direction guide pieces for guiding the width direction of the nonwoven fabric folded to the receiving roller portion and the horizontal guide roller, the folding operation is carried out almost accurately by guiding the conveying direction.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

First Embodiment (Manufacturing process of Daikyong pipe lining bag)

FIG. 2 is a side view of the primary stitching process line of FIG. 1, and FIG. 3 is a cross-sectional view of the primary stitching line of FIG. FIGS. 4 and 5 are perspective views showing the steps of lifting and lowering the supporting roller unit of FIG. 3, and FIG. 6 is a perspective view of the pressing and unwinding process line of FIG. 7 is a side view showing the coating process line of Fig. 1, Fig. 8 is a perspective view showing an enlarged view of the coating process line of Fig. 7, Fig. 9 is a cross- 10 is an enlarged perspective view of the centering process of the coating process line of FIG. 7; FIG.

As shown in FIG. 1, the manufacturing line of the tube lining bag according to the first embodiment is largely composed of a sewing line 10, an expansion line 30, and a coating line 50.

The sewing process line 10 is constituted by a primary sewing line 10A and a secondary sewing line 10A, as shown in Fig.

 As shown in Fig. 2, the primary sewing line 10A is formed by winding one side edge of the first platy nonwoven fabric 11a and the second platy nonwoven fabric 11b, which are vertically stacked, in a sowing machine 13 This is the first sewing step.

That is, each of the first sheet nonwoven fabric 11a and the second sheet nonwoven fabric 11b is provided by winding a sheet-like nonwoven fabric having a plastic film on one side thereof in a roll form.

The first and second plate-like nonwoven fabrics 11a and 11b in the roll form are fed to the sowing machine 13 as they are fed through the feed rollers 15a, 15b, and 15c while being vertically stacked so that the film is vertically positioned. The primary stitching is performed continuously to form the primary stitching portion 12a.

Of course, it is preferable to cut both side edges of the sheet-like nonwoven fabrics 11a, 11b to a desired size with a cutter before performing the first sewing.

Each of the feeding rollers 15a, 15b and 15c includes a driving roller and an elevating roller. As shown in the feeding roller 15c of FIG. 2, the lower driving roller 15c 'and the elevating upper roller 15c' '). The lower driving roller 15c 'receives rotational power of the sawing machine 13 connected to the motor 14a through the crank 14b and the one-way clutch 14c.

Also, at least one of the feeding rollers 15a, 15b and 15c may be used as a feeding roller, at least the feeding roller 15c located in front of the sowing machine 13. In this case, the gear 14d is engaged with the rotation shaft on the opposite side of the feeding roller 15c as shown in Fig. 2, and provides a larger rotational force than the rotational force due to the existing pressure frictional force.

The nonwoven fabric 11c having the primary sewing section 12a is passed through the sowing machine mechanism 13A disposed in front of the enlarging process line 30 shown in Fig. 3 to perform secondary stitching on the other side edge, 12b.

Of course, the sewing machine 13 may be sewn on both sides of the sowing machine 13 in the primary sewing line 10A. However, when sewing simultaneously, the upper nonwoven fabric 11a and the lower nonwoven fabric 11b are bulged without being stretched, Provide the cause of the error.

As described above, when the sawing machine mechanism 13A shown in Fig. 1 is used for both primary and secondary stitching, the sewing process is intermittently performed, and when a separate sowing machine mechanism is further used, the sewing process is continuously performed , And installation conditions (installation space, etc.).

The tube lining bag 11d formed with the primary sewing section 12a and the secondary sewing section 12b is expanded through the expansion process line 30. [

That is, the expanding process is a process for expanding the edges of the sewing portions 12a and 12b so as to face each other, thereby obtaining an easy coated surface and a reliable sealing surface of the sewing portions 12a and 12b in the subsequent coating process .

The expansion process line 30 includes a main expansion process line 310 and a secondary expansion process line 370 as shown in FIG.

The main expansion process line 310 includes a support roller portion 320 for supporting the bottom of the pipe lining bag 11d and an expansion jig 330 inserted into the pipe lining bag 11d.

The support roller portion 320 is constituted by a roller support bracket 321 arranged in front and rear and a plurality of support rollers 323 provided between the roller support bracket 321.

The roller support bracket 321 is composed of a vertical support bracket 321a and a horizontal support bracket 321b extending horizontally from the upper end of the vertical support bracket 321a.

The support roller 323 includes a lower support roller 323a provided below the vertical support bracket 321a, an upper support roller 323b provided along the horizontal support bracket 321b, a lower support roller 323a, And a middle support roller 323c provided between the upper support rollers 323b. Therefore, it is convenient to support the pipe lining bag 11d by being arranged in a stepped shape.

It is preferable that a flange type width direction guide piece 325 for guiding the width of the pipe lining bag 11d is slidably provided on the lower support roller 323a and the upper support roller 323b.

It is preferable that the roller support frame 321 is installed so as to be able to move up and down along the frame 311 by the lift portion 340 (see Figs. 4 and 5).

The elevating portion 340 includes a guide groove 341 formed in the frame 311, a guide bar 343 vertically moving up and down along the guide groove 341 while supporting the roller supporting bracket 321, A driving chain 345 fixed to the horizontal support bracket 321b at the other end and fixed to the vertical support bracket 321a and an upper sprocket 347 and a lower sprocket 347 disposed at the upper and lower ends of the chain 345, (Not shown) that transmits power to the lower sprocket 347, and a constant-speed rotatable drive motor (not shown).

Further, it is preferable that a weight 350 is disposed on the receiving roller portion 320. [

That is, the weight 350 is provided at one end of the chain 353 extending through the guide sprocket 351 provided in the frame 341, and the other end of the chain 353 is fixed to the horizontal support bracket 321b.

The weight 350 is provided with a C-shaped guide piece 357 which is inserted into a guide rod 355 fixed to the frame 311 and guided so as to be able to ascend and descend.

The weight 350 allows the support roller portion 320 to be urged upward so as not only to prevent any drop, but also smoothly lift the support roller portion 320 upward.

The expansion jig 330 is preferably composed of a bar 331 and a parcel extension piece 333 provided at both ends of the bar 331.

Since the parcel extension piece 333 has a parabolic shape convex toward the outside, it plays a role of holding the position of the edge at the time of expansion of the tube lining bag 11d.

On the other hand, a horizontal guide roller unit 360 is preferably provided on the frame 311 below the support roller unit 320.

The horizontal guide roller unit 360 guides the pipe lining bag descending in the vertical direction while supporting the expanding jig 330 in the horizontal direction so as to be continuously conveyed in a state of being extended by the feeding driving roller 380 do. The feeding driving roller 380 is constituted by a lower driving feeding roller 381 driven and rotated by a driving motor (not shown) and an upper idling feeding roller 383 moving up and down.

The horizontal guide roller unit 360 includes a pair of vertical guide rollers 361 provided before and after the guide rollers 363 and 365 gradually disposed on the lower front side of the pair of vertical guide rollers 361, And a horizontal guide roll 367 provided at a predetermined interval slightly below the transition guide roll 365.

Since the expanding process is performed while the expanding jig 330 is placed on the upper side between the vertical guide rolls 361, the expanding jig 330 does not move and the expanded edge is folded well to improve the transport efficiency.

It is preferable that a width direction guide piece 368 for guiding the edge of the width is slidably mounted on the horizontal guide roll 367.

Therefore, the lower surface of the expansion jig 330 is extended by the continuous feeding of the tube lining bag 11d while being supported by the vertical guide roll 361.

On the other hand, it is preferable that an additional expansion process line 370 is disposed in front of the feeding drive roller 360.

That is, although the sewing portions 12a and 12b of the tube lining bag 11f passing through the expansion jig 330 are positioned on the center line of the width thereof, To reduce the possibility of the sewing portions 12a and 12b being abutted against each other.

As shown in FIG. 6, the additional expansion process line 370 is preferably composed of a large expansion roller section and a pressure expansion roller section.

The pressurization expansion roller portion is passed between the upper and lower rollers 371 and 373 to spread the sewing portions 12a and 12b as if ironing it.

Since the upper roller 371 is provided so as to be able to move up and down and the concave and convex portions 371a and 371b are disposed along the rotation axis thereof, Not good. Needless to say, the sewing portions 12a and 12b are in a position where the convex portion 371b is pressed.

Meanwhile, it is preferable that a pressing expansion roller portion 375 for pressing the upper surface sewing portion 12b before passing the upper and lower rollers 371 and 373 is further provided.

The pushing expansion roller portion 375 includes a pushing caster 376 and a sliding portion 377 and a lift portion 378 for supporting the pushing cast 376 in such a manner that the pushing pushing portion 376 slides left and right,

The sliding portion 377 is constituted by a fixed screw bar 377b rotatably fixed to a fixed bracket 377a mounted and fixed to the horizontal frame 313 and a conveying nut 377c engaged with the fixed screw bar 377b and slid .

The elevating portion 378 is composed of an elevating screw bar 378a supporting the pressing caster 376 at the lower end and a fixing nut 378b fastening the biasing steel screw bar 378a so as to be able to ascend and descend.

The fixing nut 378b is fixed to a conveying bracket 378c conveyed together with the conveying nut 377c.

The pushing caster 376 is constituted by a roll 376a rotatable 360 degrees with respect to the lifting screw bar 378a so that it can be pressed and transported without being subjected to a large resistance when it is transported from the edge toward the sewing part 12b.

The pushing and pushing expansion roller portion 375 also pushes in a state in which the pushing and pushing expansion roller portion 375 is not provided at the bottom, so that it also pulls in the longitudinal direction of the pipe lining bag.

The tube lining bag 11g having undergone such an expansion process is transferred to the coating process line 50 of FIG.

7 to 9, the coating process line 50 includes a pulling extension portion 510 for pulling and extending the sewing portions 12a and 12b, and a sewing portion 12a and 12b in a pulled state, And a coating nozzle unit 530 for spraying the coating solution.

The coating nozzle unit 530 includes a coating nozzle 531 and a supply source 533 for supplying a coating liquid of a gel type to the coating nozzle 531.

The coating nozzle 531 is first coated to a width slightly larger than the width of the sewing sections 12a and 12b and then is coated more widely than the width of the coated area to completely seal the sewing section.

That is, after the narrow portion of the sewing portion 12a is coated, a narrow coating process is performed in which the sewing portion 12b is narrowly coated. After completing this narrow coating process, the nozzle is replaced with a nozzle having a longer width direction, and then the coating process is completed through a wide coating process on each narrow coating upper layer.

Especially, when the narrowing coating process is performed, pulling the sewing portions 12a and 12b again in the direction of the arrow A (the width direction with respect to the line of the sewing line) with the pulling extension 510 simultaneously , The coating solution is well penetrated by the stitching gap, and the coating layer is perfectly stuck to completely prevent the leakage of the thermosetting resin when impregnated.

The pulling extension 510 is constituted by a pulling expansion roller 510 and the rotation axis 511 thereof is inclined downward at an angle? Relative to the axis o in the width direction as shown in FIG. 9A The outer side of the rotary shaft 511 is disposed closer to the front side in the advancing direction than the inner side) and pulled in the direction of the arrow A.

The pulling expansion rollers 510 are preferably installed in the approach recession 520 which approach or retreat to each other depending on the width of the pipe lining bag 11g.

The approach retracting portion 520 may be moved back and forth with respect to the width of the pipe lining bag or if the position of the sewing portion is not located at the center of the width, Power can be obtained.

The approaching and retracting unit 520 includes a movable nut 523 provided with a pulling expansion roller 510, a fixed screw bar 521 to which the movable nut 523 is fixed, a support for rotatably supporting the fixed screw bar 521, And a bracket 525. The support bracket 525 is fixed on the frame 503.

When the tube lining bag 11h coated with the coating nozzle unit 530 passes through the pressure cooling roller unit 540 and the pressing rollers 580 and 590 as described above, the pressure-hardened tube lining bag 11i ).

As shown in Figs. 7 and 8, the pressure-cooling roller portion 540 is constituted by an upper roller portion 541 and a lower roller portion 546. [

The upper surface roller portion 541 includes a cooling circulation roll 542 having both ends rotatably supported, a pressurized cooling roll 543 protruding from the center of the cooling circulation roll 542, And a concentrated pressurized cooling roll 544 protruding from the center of the pressurized cooling roll 544.

Cooling water is supplied to and discharged from the cooling circulation roll 542 through the cooling circulation pipe 545.

The pressurized cooling roll 543 is a roll that presses in a wider direction than the sewing portion 12a or 12b and the concentrated pressurized cooling roll 544 substantially pressurizes and cools the resin coating liquid by the maximum limit of the coating.

The lower roller portion 515 is located below the upper roller portion 541 and the coating restricting groove 547 is formed as shown in FIG. 8 so that even if the concentrated pressurized cooling roll 544 pressurizes the coating liquid, So that it is no longer pressed and thinned by the limiting groove 547. Therefore, the thickness of the coating layer can be uniformly formed by the constitution of the coating restricting groove 547. [

The tube lining bag 11i having passed through the pressurizing and cooling roller portion 540 sufficiently compresses the coating layer while passing through the primary pressing roller 580 and the secondary pressing roller 590 and the final tube lining bag 11j Is made.

The lining bag 11j is impregnated in the impregnation step, thereby manufacturing a pipe lining material used for repairing the pipeline.

It is also preferable that a centering adjusting unit 560 is provided to align the center lines of the sewing unit 12a or 12b in front of the pulling extension 510 and the coating nozzle unit 530. [

That is, the center line of the sewing portion 12a or 12b of the tube lining bag 11g having a predetermined length should be transferred to the center of the coating nozzle portion 530. [

However, since the roll is not transported while being evenly pressed in the entire width direction, it is turned off.

It is very difficult for the worker to rotate the worker in order to align the center, and the productivity is remarkably lowered due to the troublesomeness of stopping the work and releasing the pressurization of the pressurizing and cooling roller unit 540.

Also, if the tube lining bag 11g is stretched to some extent in the longitudinal direction when passing through the coating nozzle part 530, the penetration of the coating liquid is performed well in the longitudinal direction of the sewing part 12a or 12b, Can be completely prevented.

In order to solve this problem, it is preferable that the centering control unit 560 shown in FIG. 10 is provided.

The centering adjuster 560 adjusts the centering while feeding the tube lining bag 11g in the width direction while the tube lining bag 11g is being held by the rollers, and at the same time, pulls the tube in the longitudinal direction of the tube lining bag 11g according to the degree of compression.

As shown in Fig. 10, the centering adjustment portion 560 includes a centering roller 560a and a centering roller transfer portion 560b for adjusting the centering for transferring the centering roller 561 in the width direction.

The centering roller 560a is composed of an upper centering roller 561a and a lower centering roller 563a.

The upper centering roller 561a is rotatably supported (i.e., idle roller) on the lift cylinder 561 mounted on the bracket 563 and the lower centering roller 563a is also rotatably supported on the bracket 563 . Therefore, in addition to the effect of pressing the pipe lining bag, the effect of pressing and pressing the sewing section can be reapplied.

The centering roller transfer section 560b includes a screw rod 561b rotatably fixed to the frame, a transfer nut 563b slidably coupled to the screw rod 561b in a slidable manner, As shown in Fig.

The slider 565b includes a support bracket 566b for supporting the bracket 563 and a connection bracket 567b for connecting the support bracket 566b to the transfer nut 563b and a guide And a rod 567b.

The guide rod 567b is slidably inserted into a guide pipe 568b fixed to the frame.

Therefore, when the screw rod 561b rotates in the forward and reverse directions, the feed nut 563b is also transported in the width direction, and the centering roller 560a is moved in the width direction while the slider 565b is being transported in the width direction with respect to the guide pipe 568b To control the centering.

The centering roller unit 560a may further include a rotation speed control unit 570 for reducing or stopping the idling speed.

10B, the rotation speed controller 570 includes a sleeve tube 576 fitted to the outer circumferential surface of the shaft 572a and having a flange 576a formed at one end thereof, and an outer peripheral surface 576a of the sleeve tube 576, A disk 574 mounted on both sides of a driven sprocket 572 rotatably fixed to a bushing 259 coupled to the sleeve 572, a spring 575 pressing both sides of the disk ring 574, And a nut 578 fastened to the male screw 576b formed at the other end of the spring 576 to adjust an elastic force of the spring 575. [

The shaft 572a is fixedly supported on the slider 565b or the bracket 563.

The nut 578 adjusts the degree of pressing of the spring 575 according to the fastening pitch to slow down or stop the nut 578.

Therefore, the centering roller portion 560a is not freely rotated and relatively rotated according to the feeding speed of the pipe lining bag, so that the pipe lining bag having a relatively fast feeding speed is pulled backward.

The process sequence of the first embodiment having the above-described process line will now be described.

As shown in Fig. 1, a first take-up roll in which a first platelike nonwoven fabric 11a having a film on its upper surface is wound, and a second platelike nonwoven fabric 11b on which a film is attached is wound on a first take- Respectively.

The upper and lower nonwoven fabrics of the first winding roll and the second winding roll are superimposed one on the other on the upper and lower sides to be squeezed by the feeding roller 15c or the feeding rollers 15a, 15b and 15c, Thereby forming the primary sewing portion 12a.

After the first sewing portion 12a is formed, the other side edge is sewn to expand the pipe lining bag 11d having the second sewing portion 12b in the width direction with respect to the longitudinal direction of the full length through the expanding jig 330, And the portions 12a and 12b are positioned on the center line in the width direction.

As described above, since the expansion process speed of the pipe lining bag is very fast by using the expansion jig 330 and both extended edges are folded well, it can be transported without error in the subsequent expansion process.

The expanded tube lining bag 11e is passed through a horizontal guide roller portion 360 and an additional expansion process line 370 to manufacture a tube lining bag 11g in which the edges of the sewing portions 12a, do.

Since the tube lining bag 11g is centered or pulled in the longitudinal direction by the centering adjusting portion 560 and the first narrow coating is performed at the coating nozzle portion 530 in the state of being pulled in the width direction at the pull extension portion 510, It completely solves the fear that the penetration of the coating liquid is surely released by the thread gap of the sewing portion and is released.

In addition, since the brakes are applied to the rollers of the centering adjusting portion 560 and pulled in the longitudinal direction of the tube lining bag, the coating liquid can surely penetrate into the sewing portion,

After the first narrow coating is performed, the second narrow coating is carried out in the same manner.

After the second narrow coating is performed, the nozzles of the coating nozzle unit 530 are changed to wide nozzles, and the wide coating is divided into first and second coatings in the same manner as the narrow process.

In the case of narrow coating and wide coating, a plate-like gel-type coating liquid can be continuously obtained with a predetermined thickness by interaction between the concentrated pressure cooling roll 544 and the coating restricting groove 547. Therefore, since the thickness of the coating layer is regularly performed along the entire length, deterioration in quality due to irregular thickness of the coating layer can be prevented in advance.

Second Embodiment (Manufacturing process of small diameter pipe lining bag)

FIG. 11 is a whole process view schematically showing a manufacturing process of a small-diameter pipe lining bag according to a preferred embodiment of the present invention, and FIG. 12 is a perspective view illustrating the grounding process and the sewing process of FIG.

11 and 12, the process of the pipe lining bag of the second embodiment is substantially similar to the process of the pipe lining bag of the first embodiment. However, since the sewing section is finished first, the folding process is firstly performed, Process.

The folding process replaces the function of the pair of guide rollers 361 of the horizontal guide roller unit 360 as a folding roller in the expansion process of the first embodiment.

11 and 12, a sheet-like nonwoven fabric 11 having a film on the outer surface thereof is placed on the receiving roller portion 320, and then the film is folded so as to be arranged on the outer side, By passing between the pair of guide rolls 361, the plate-like nonwoven fabric is continuously conveyed to the folded nonwoven fabric 11 ', and the folded nonwoven fabric is conveyed by the sowing machine 13 of the sewing line, Is formed, and a pipe lining bag having a predetermined length is simply produced.

The horizontal guide roller portion 360 of the second embodiment is composed of a folding roller and a horizontal guide roller.

The folding rollers correspond to a pair of vertical guide rolls 361 installed before and after.

The horizontal guide rollers include transition guide rollers 363 and 365 that are gradually disposed on the lower front side of the pair of vertical guide rollers 361 and horizontal guide rollers 363 and 365 installed at a predetermined interval slightly below the transition guide rollers 365, (367).

The pipe lining bag after the sewing process is placed on the center line of the sewing section 12 through the enlarging process as in the first embodiment, and the center line is subjected to a coating process for narrow-width coating and wide-width coating on the sewing section 12 To produce a final tube lining bag.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be apparent to those skilled in the art.

The present invention is applicable to any product that performs folding coating of the sewing section.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall process diagram schematically showing a process for manufacturing a large diameter pipe lining bag according to a preferred embodiment of the present invention; Fig.

Fig. 2 is a side view showing the primary sewing process line of Fig. 1; Fig.

3 is a perspective view showing a line of a secondary sewing step, an expanding step, and a press-spreading step in Fig.

Fig. 4 and Fig. 5 are perspective views showing before and after the lifting and lowering of the receiving roller unit of Fig. 3;

Fig. 6 is an enlarged perspective view of the press spreading process line of Fig. 3; Fig.

Figure 7 is a side view of the coating process line of Figure 1;

8 is an enlarged perspective view of the coating process line of FIG. 7;

9 is an enlarged perspective view of the coating and pulling process in the coating process line of FIG. 7;

9A is a plan view for explaining a pulling process;

10 is an enlarged perspective view of the centering process of the coating process line of FIG. 7;

10A is a cross-sectional view showing the width direction transfer of FIG. 10;

Fig. 10B is a sectional view showing the rotation speed deceleration unit of Fig. 10; Fig.

11 is an overall process diagram schematically showing a manufacturing process of a small diameter tube lining bag according to a preferred embodiment of the present invention.

12 is a perspective view showing a grounding step and a sewing step in Fig.

Description of the Related Art

10: sewing process line 10A, 10B: primary and secondary sewing process line

11, 11a, 11b: Plate-like nonwoven fabric 11c: Primary-stitched nonwoven fabric

11d: Second sewing nonwoven fabric (tube lining bag)

12a: primary sewing section 12b: secondary sewing section

13: Sowing machine 13A: Sowing machine mechanism

14a: drive motor 14b: crank

14c: one-way clutch 14d: gear

15a, 15b, 15c: Feeding roller 30: Expansion process line

310: main expansion process line 311: frame

320: Support roller unit 321: Roller support bracket

323: Support roller 330: Expansion jig

340: elevating portion 341: guide groove

343: guide bar 345: drive chain

347: Lower Sprocket 350: Chu

351: guide sprocket 353: chain

355: guide rod 357: guide

360: Horizontal guide roller unit 361: Vertical guide roll (folding roller unit)

370: additional expansion process line 371, 373: pressurization expansion roller section

375: Press expansion roller unit 380: Feeding drive roller

50: coating line 510: pull extension

511: rotating shaft 515: lower roller

517: Lift cylinder 520: Approach recess

521: Fixing screw bar 523: Movable nut

530: coating nozzle unit 540: pressurized cooling roller unit

541: upper roller section 542: cooling circulation roll

543: pressurized cooling roll 544: concentrated pressurized cooling roll

545: cooling circulation pipe 546: lower roller portion

547: coating restriction groove 560: centering control section

560a: centering roller 561: lift driving cylinder

563: Bracket 561a: Upper centering roller

563a: lower centering roller 560b: centering roller transmission

561b: screw rod 563b: feed nut

565b: slider 567b: guide rod

568b: guide pipe 570: rotation speed control unit

571: Driving sprocket 572: Passing sprocket

573: chain 574: disc ring

575: Spring 576: Sleeve tube

576a: Flange 576b: male thread

578: Nut 579: Bush

580: primary pressing roller 590: secondary pressing roller

Claims (3)

A supporting roller portion for supporting a plate-shaped nonwoven fabric having a film on one surface thereof; And a horizontal guide roller portion disposed below the receiving roller portion, Wherein the horizontal guide roller portion includes a folding roller that folds a sheet-like nonwoven fabric passing through the receiving roller portion into two folds, and a horizontal guide roller that horizontally guides and transfers the nonwoven fabric passed through the folding roller. The method according to claim 1, Wherein the folding roller is disposed perpendicularly to the receiving roller portion when viewed from the top, Wherein the supporting roller portion is lifted by the lifting portion. 3. The method of claim 2, Wherein the support roller portion and the horizontal guide roller are further provided with width guide pieces for guiding the width direction of the folded nonwoven fabric.

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