KR20060047050A - Frame to draw out beam and manufacting device thereof - Google Patents

Abstract

The present invention relates to a file release material for drawing a pile used in constructing an earth wall and a manufacturing apparatus thereof. The main sheet covering the outer circumferential surface of the H-shaped pile minimizes the contact area with the outer circumferential surface of the H-shaped pile after the construction of the earth wall. Support protrusions which are formed in a plurality of rows horizontally and horizontally while being spaced at regular intervals so as to easily withdraw the form pile, and when the main sheet is wrapped in the H-shaped pile, both sides of the wings of the H-shaped pile are bent at the corners of each end of both ends In order to achieve this, the bending protrusions protruding toward the longitudinal direction of the H-shaped pile while maintaining a proper distance in the width direction of the main sheet and a plurality of support protrusions and bending protrusions formed in the main sheet And a pile release material having a mortar blocking sheet bonded to the main sheet so that concrete mortar does not penetrate into the Invention is to provide a manufacturing apparatus for manufacturing a file releasing member.

Pile release material, support protrusion, bending protrusion, extrusion molding machine, forming roll, solution feeder

Description

File release material and its manufacturing apparatus for drawing out the file used in constructing the earth wall {Frame to draw out beam and manufacting device

1 is a plan view showing the earth wall construction state for explaining the present invention.

Figure 2 is a partial perspective view for explaining the configuration of the pile release material of the present invention.

Figure 3 is a plan sectional view showing a state in which the file release material of the present invention installed in the file.

Figure 4 is an overall configuration of the pile release material manufacturing apparatus of the present invention.

Figure 5 is a front view of the forming roll of the pile release material manufacturing apparatus of the present invention.

Figure 6 is a cross-sectional view of the forming roll of the pile release material manufacturing apparatus of the present invention.

7 and 8 are cross-sectional views taken along line A-A and line B-B of FIG.

9 and 10 are another embodiment of the intermediate guide roll and the rear end of the present invention.

Figure 11 is a cross-sectional view and a plan view of one embodiment of the main sheet is molded in the forming roll of the pile release material manufacturing apparatus of the present invention.

12 is another embodiment of the main sheet is molded in the forming roll of the pile release material manufacturing apparatus of the present invention.

Figure 13 is a cross-sectional view of the pile release material produced while the mortar blocking sheet is laminated to the main sheet of the present invention.

※ Explanation of code for main part of drawing

1: File release material 1a: Main sheet

1b: mortar blocking sheet 11: support protrusion

12: bending protrusion 2: H type pile

3: extruder 31: extrusion nozzle

4: tip drawing roll 5: forming roll

5a: outer cylinder 5b: inner cylinder

5c: vacuum generating tube 51: groove

52: ring groove 53: vacuum pump connector

54: A pair of vacuum guide vanes 55a, 55b: Rotary joints on both sides

56: cooling water flow space 57a: cooling water inlet pipe

57b: cooling water outflow pipe 58: power input means

511,521: through hole 541: vacuum suction hole

541: cutting blade 6a: tip guide roll

6b, 6c: Middle guide roll 7a: Rear upper roll

7b: bottom lower roll 8: solution feeder

81: cooling roll 82: braid

9: bobbin

In order to prevent the collapse and settlement of the surrounding ground during the digging work, the present invention uses a metal pile (mainly H-shaped beam) used for the construction of a temporary soil wall that is pre-installed at the excavation boundary before the digging work. The present invention relates to a pile release member and a manufacturing apparatus for a pile release member surrounding the outer circumference of a metal pile in order to be reusable after construction of the earth wall.

In the ground excavation work for the construction of concrete structures in civil engineering and construction sites, temporary earthquake works are carried out as a way to maintain the stability of the adjacent ground by preventing soil collapse, settlement and restraining displacement of the back surface of the excavation.

In recent years, in case of dense urban centers, the construction of close proximity to existing buildings is increasing, which leads to the demand for settlement or collapse of the ground due to excavation and stability of surrounding buildings. It's happening.

These temporary earthquake construction methods are largely classified into the earth wall method and the earth wall support method. Among them, the earth wall method, which is particularly suitable for the construction work in urban areas, prevents soil collapse and reduces the groundwater level due to the excavation, and thus prevents soil leakage. It should be possible to minimize displacement and settlement of adjacent buildings.

As mentioned above, in the temporary earthquake earth wall construction method used in urban construction, continuous wall construction methods such as soil cement wall construction method (SCW method) and cast-in-place concrete pile construction method (CIP method) are mainly used. As excavation assistance methods, LW grouting, SGR grouting, and JSP method are used for order and ground reinforcement.

In addition, the above-described earth wall method is used for the purpose of increasing the rigidity of the earth wall by inserting an H-shaped steel pile (H-type beam) into the continuous wall.

However, in the earth wall method as described above, the H-type pile is inserted into the pile hole in which the ground is pre-excavated, and then the concrete mortar is poured into the pile hole to build the earth wall. Since the settlement and collapse of the ground can be prevented, expensive metal piles buried in concrete pillars are therefore unnecessarily screwed up. Thus, the metal piles embedded in concrete cause waste of resources. In addition, after a certain time has elapsed, the problem of increasing soil contamination due to corrosion, etc. also follows.

In addition, the excavation work due to the subsequent reconstruction will cause excavation failure by the above metal pile, and the pile obtained after the destruction of the concrete column is not reused due to deformation, so it is treated as scrap metal or classified as industrial waste. There is a problem that increases the environmental pollution.

In view of the above, Korean Patent Application No. 2002-8778 and Korean Utility Model Registration No. 20-0340902 have been proposed for the construction method to draw out the H-shaped pile used in the construction of the earth wall. Hypothetical earth wall construction method of the patent application is that the release coating material composed of polymer or bentonite embedded in the double non-woven fabric layer inserts the H-type pile into the pile hole in the subtracted state, and then in the curing process of the large concrete mortar placed in the pile hole. The release cladding absorbs moisture and changes to a gel state so that the H-shaped piles can be easily taken out.After the piles are taken out, concrete mortar is placed in the holes where the piles are taken out to maintain the rigidity of the earth wall, while the expensive piles are taken out. It is possible to reduce the construction cost by making it possible to reuse it. In addition, there is an advantage such as not causing the failure of excavation due to the metal pile when the building is later renovated due to the aging of the building, while the release coating material used in the above method is between the internal and external nonwoven fabric and the nonwoven fabric. It is composed of a release coating layer made of a polymer or bentonite filled in, such a release coating material is very expensive manufacturing cost and adds to the burden of construction costs, it is economical, especially in the rainy work due to the absorbent material has a problem of quality control.

In addition, the above-mentioned registered utility model is sealed by adhering the upper and lower ends of the inner and outer sheet papers made of plastic material, and a plurality of spaces capable of filling high pressure air between the upper and lower ends of both sheet papers are vertically spaced at a predetermined interval. After forming to form a release material as a structure for filling the above-mentioned space with high pressure air, the release material of such a structure is formed so that the cross-section of the cross-section as a whole has an internal volume to accommodate the H-shaped pile The large, release member is made of plastic sheeting, which is not only weak, but also the ends of the H-shaped pile (parts formed to face each other in parallel) can adhere to both sides of the inner sheet of the release member. Between the connecting part) and the outside of the release member with the H-shaped pile inserted into the release member. When the concrete mortar is poured, both sides of the release material, which forms an empty space between the middle part of the H-shaped pile, may be destroyed due to the weak resistance of the concrete mortar to the pouring pressure. It is very difficult and difficult to insert the two ends of the H-shaped pile, which is water, in close contact with the inner sheet of both sides of the release member, and the above-mentioned release member is very difficult to manufacture according to the length of the H-shaped pile that varies from construction site to construction site. If the middle part of the release material is cut off, it is pointed out that it is difficult to charge the air due to the opening of the space part filled with high-pressure air. Therefore, it is necessary to make an order production according to the length of the H-type file used at each construction site. It is pointed out that the productivity is very bad.

The present invention has been proposed in view of the above-mentioned general matters, and the main sheet covering the outer circumferential surface of the H-shaped pile has a minimum area of contact with the outer circumferential surface of the H-shaped pile so as to withdraw the H-shaped pile after construction of the earth wall. The support protrusions are formed in a plurality of rows horizontally and protrudingly spaced apart at regular intervals so as to facilitate this, and when the main sheet is wrapped in the H-shaped pile, both sides of the wings of the H-shaped pile can be well bent at each corner. In order to maintain the proper distance in the width direction of the main sheet to form a concrete projection into the bending protrusions and the plurality of support protrusions and bending protrusions formed in the longitudinal direction of the H-shaped pile and the main sheet The object of the present invention is to provide a pile release material having a mortar blocking sheet bonded to the main sheet to prevent penetration. In addition, another object of the present invention is to provide a manufacturing apparatus for continuously manufacturing a pile release material having each component as described above.

As a means for achieving the above object, the file release material of the present invention,

Made of synthetic resin as a raw material, the thickness is thin, and has a width that can cover the entire outer circumference of the H-shaped pile while being extruded continuously in the longitudinal direction of the H-shaped pile, so that a space is formed between the outer peripheral surface of the H-shaped pile. A main sheet having a plurality of supporting protrusions formed vertically and horizontally while maintaining a predetermined interval;

In the mold release member having a mortar blocking sheet which is bonded to the opposite side of the support projections as one surface of the main sheet to prevent the concrete mortar from penetrating into the respective support projections,

When the support sheet is wrapped in contact with the outer circumferential surface of the H-shaped pile, it is appropriate to bend in the width direction of the main sheet so that the bending can be easily performed at each corner portion of both ends of the wings of the H-shaped pile. It is characterized in that it further comprises a plurality of bending projections protruding continuously formed in the longitudinal direction of the H-shaped pile while maintaining the spacing.

And, the pile release material manufacturing apparatus for achieving the object of the present invention,

In an extrusion molding machine which continuously extrudes a sheet formed by using a resin as a raw material and having a thin thickness and a wide width,

A number of support protrusions are formed on the sheet extruded from the extrusion nozzle of the extruder in the vertical and horizontal direction, and at the same time, a plurality of bending protrusions are continuously connected in the longitudinal direction of the sheet at appropriate intervals with respect to the width direction of the sheet. And a forming roll having a plurality of grooves formed at regular intervals on the entire outer circumferential surface and a plurality of annular grooves formed in the circumferential direction at a suitable interval between the grooves to form a protrusion. It is done.

And, the forming roll, the outer cylinder is formed with the plurality of grooves and a plurality of annular grooves;

An inner cylinder installed inside the outer cylinder and installed in a state in which the grooves and the annular grooves are joined to each other while forming a cooling water flow space therebetween;

A plurality of through holes formed in the outer cylinder and each of the plurality of annular grooves are formed to be connected to the inner cylinder;

Regardless of the rotational operation of the inner cylinder is inserted into and fixed to the center, one end is protruded to one side of the inner cylinder is connected to the vacuum pump, the other end is installed with a vacuum generating tube located inside the inner cylinder and ;

It is fixedly installed on the outer circumference of the vacuum generating tube inserted into the inner cylinder, the inner surface of the inner cylinder while allowing the rotational operation of the inner cylinder having an angular width within the range that the sheet extruded from the extruder contact the outer cylinder. A pair of vacuum guide vanes protruding from and contacting the lens;

A vacuum suction hole formed in a plurality at regular intervals in a vacuum generating tube inserted into the inner cylinder to generate a vacuum in the space between the pair of vacuum guide vanes;

Two rotary joints installed at both ends of the outer cylinder to allow rotational operation of the outer cylinder and connected to the coolant inlet pipe and the coolant outlet pipe;                         

A power input unit connected to one end of the outer and inner cylinders to receive rotational power from the outside to rotate the outer and inner cylinders;

Characterized in that configured to include.

In addition, the pair of vacuum-induced wing is formed of a wear-resistant synthetic resin-based material, and both ends of the wing is characterized in that it is formed integrally with both blocking wings in contact with both ends of the inner surface of the inner cylinder.

Further, protrusions are formed on the outer circumferential surface of the tip drawing roll which is installed on the upper side of the forming roll and draws the sheet extruded from the extrusion nozzle together with the forming roll to press the sheet into the grooves of the forming roll in a press-in state. It is characterized by being.

In addition, the intermediate guide roll for guiding the main sheet formed with the supporting projections and the bending projections in the forming roll has an end support portion for supporting both ends of the main sheet, and each support protrusion formed on the main sheet to have a smaller diameter than the end support portion. And it is characterized in that the projection support for supporting the bending projections are formed.

In addition, the rear side of the plurality of intermediate guide rolls are formed in the upper and lower rear end roll and the rear end lower roll to be drawn up and down to continuously draw the main sheet formed in the forming roll, the outer peripheral surface of the rear upper roll is flat On the outer circumferential surface of the rear end lower roll, end support portions for supporting both ends of the main sheet, and projection support portions formed in a ring groove to support each of the support protrusions and the bending protrusions formed on the main sheet; It is characterized in that the intermediate support portions are formed in a ring projection between the protrusion support portion is formed.                         

In addition, the rear of the forming roll is a solution supply for supplying a liquid synthetic resin solution from the upper side of the main sheet, and the synthetic resin solution supplied from the solution feeder while cooling the solution applied to the outer peripheral surface with a thin thickness set by the braid It further comprises a cooling roll to be bonded to the sheet is characterized in that configured to be manufactured in a state in which the mortar blocking sheet is integrally bonded to one surface of the main sheet molded in the forming roll.

Embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view showing a construction state of the earth wall for explaining the present invention, Figure 2 is a partial perspective view for explaining the configuration of the pile release material of the present invention, Figure 3 is a state in which the pile release material of the present invention is installed on the file 4 is an overall configuration diagram of a pile release material manufacturing apparatus of the present invention, Figure 5 is a front view of a forming roll of the pile release material manufacturing apparatus of the present invention, Figure 6 is a molding of the pile release material manufacturing apparatus of the present invention 7 and 8 are cross-sectional views taken along line AA and BB of FIG. 5, and FIGS. 9 and 10 are other embodiments of the intermediate guide roll and the rear end of the present invention, and FIG. 11 is a file of the present invention. 12 is a cross-sectional view and a plan view of an embodiment of a main sheet formed on a forming roll of a release material manufacturing apparatus, and FIG. 12 is another embodiment of a main sheet formed on a forming roll of a pile release material manufacturing apparatus of the present invention, and FIG. It shows a cross-sectional view of the file produced to the releasing member mortar shield sheet is laminated to the main sheet state.

Reference numeral 1 denotes a pile release member, wherein the pile release member 1 is thin and has a width H having a wide width W that can be wrapped in contact with the outer circumferential surface of the H-shaped pile 2. It consists of a main sheet 1a extruded from a synthetic resin as a raw material to have a long length (L) so as to wrap the whole pile 2, and a mortar blocking sheet 1b bonded to one surface of the main sheet. .

The main sheet 1a has a support protrusion 11 protruding at a predetermined height toward the opposite side of the mortar blocking sheet 1b so as to protrude innumerably in a number of vertical and horizontal rows at regular intervals toward the width W and the length L directions. Moreover, the bending protrusion 12 formed in the state which continued continuously toward the length L direction, maintaining the moderate space | interval in the width W direction of the main sheet 1a is formed.

As shown in FIG. 3, the pile release member 1 configured as described above has an H-shaped pile with the supporting protrusions 11 and the bending protrusions 12 of the main sheet 1a facing the outer surface of the H-shaped pile 2. It is installed to surround the pile (2), each of the support protrusions (11) are protruded end is supported in contact with the outer surface of the H-shaped pile (2) space between each support protrusion (11) ( S) is formed, and each of the bending protrusions 12 is formed at both edges of both ends of each of the wings of the H-shaped pile 2 toward the length L direction to form the pile-releasing member 1. It is possible to install the file release member (1) itself in close contact with the outer surface of the H-shaped pile (2) by making the bending bent at the corner portion well, the outer circumference of the H-shaped pile (2) with the file release member (1) When wrapping the both ends of the file release material overlapping each other at one side is bonded with an adhesive tape (3) One releasing member (1) is to be securely fixed in a state wrapped in the H-form file (2) outer periphery.

H-shaped pile (2) is installed in the pile release material (1) as described above is inserted into the pile hole excavated at regular intervals at the boundary of the trench construction site, and then cast concrete mortar on the pile hole To build the earth wall, the concrete mortar which is poured to the outside of the pile release material (1) surrounding the H-shaped pile (2) is each support protrusion 11 formed on the main sheet (1a) by the mortar blocking sheet (1b) Since the inside of each of the supporting protrusions 11 and the bending protrusions 12 is maintained in an empty space, the H-shaped pile 2 is wrapped while being prevented from penetrating into the field and the bending protrusion 12. To withstand the concrete pressure, and thus the concrete mortar placed in the pile hole is cured in contact with the mortar blocking sheet (1b) of the pile release material (1).

Therefore, when the H-shaped pile 2 is drawn out to recover the H-shaped pile 2 installed in the pile after the earth wall construction, the H-shaped pile 2 is formed in the main sheet 1a of the pile-releasing member 1. The friction force with the support protrusions 11 acts only so that the H-shaped pile 2 can be easily drawn out, and when the supporting protrusions 11 are destroyed when the H-shaped pile 2 is drawn out, the pile release member The gap between the (1) and the H-shaped pile (2) becomes larger, so that the drawing work of the pile can be made easier.

On the other hand, between the H-shaped pile (2) and the pile release member (1) surrounding the pile is formed a space (S) through which the water can be discharged by the support protrusions (11) is a groundwater standing in the pile hole Even if the concrete mortar is poured in the ground, the groundwater discharged through the space (S) can minimize the effect of the strength of the concrete mortar due to the groundwater can be minimized, so that the earth wall can be constructed with the set concrete strength.

Next, a device for manufacturing the file release material 2 surrounding the H-shaped pile 2 as described above will be described.

Extruder (3) is to extrude the sheet (a) having a thin thickness and a wide width while heating and melting the synthetic resin raw material, in the present invention, the sheet (extruded from the extrusion nozzle 31 of the extruder 3) a) is formed into the main sheet 1a in which the support protrusion 11 and the bending protrusion 12 are formed, and the mortar blocking sheet 1b is bonded to one surface of the main sheet 1a. Is in.

To this end, in the present invention, the tip drawing roll 4 and the forming roll 5 are laid up and down in front of the extrusion nozzle 31, as shown in FIG. 4, and the tip drawing roll 4 and the forming roll 5 ) Is configured to rotate in opposite directions toward the direction in which the sheet a extruded from the extrusion nozzle 31 is drawn out. That is, with reference to the drawings, the tip drawing roll 4 is rotated in the counterclockwise direction, and the forming roll 5 is configured to rotate in the clockwise direction.

The tip drawing roll 4 is formed on the outer circumferential surface of the projection 41 for pressing the sheet (a) when drawing out the sheet (a) is extruded from the extrusion nozzle 31, the forming roll ( On the outer circumferential surface of 5), a plurality of grooves 51 are formed at regular intervals in the circumferential direction and the axial direction, and a plurality of grooves 51 are formed in the main sheet 1a in order to form the support protrusions 11 formed in a row in the longitudinal direction. Towards the ring shape, a plurality of annular grooves 52 are formed at appropriate intervals.

The protrusions 41 protruding on the outer circumferential surface of the leading drawing roll 4 from the singer join the sheet a extruded to the extrusion nozzle 31 into the grooves 51 formed on the outer circumferential surface of the forming roll 5. By performing the pressing action in the mouth state, the sheet (a) is to be vacuum suction into each groove 51 of the forming roll (5) well.

The forming roll 5 includes an outer cylinder 5a having a plurality of grooves 51 and a plurality of annular grooves 52, an inner cylinder 5b provided inside the outer cylinder 5a, and an inner cylinder 5b. It is comprised by the vacuum generating tube 5c provided in the center part.

The inner cylinder 5b installed inside the outer cylinder 5a is installed in close contact with the groove 51 and the annular groove 52 protruding toward the inside of the outer cylinder 5a. Each of the plurality of grooves 51 and the ring grooves 52 formed in 5a is formed with through holes 511 and 521 connected to the inside of the inner cylinder 5b. The through holes 511 are formed one by one, and the through holes 521 formed in each of the plurality of annular grooves 52 are formed at regular intervals in the circumferential direction.

Both ends of the vacuum generating tube 5c provided at the center of the inner cylinder 5b are supported at both ends of the inner cylinder 5b by bearings, and one end thereof protrudes from one side of the inner cylinder 5b. In the vacuum pump connector 53 is connected to the vacuum pump is formed, the other end is so as not to leave the other side of the inner cylinder (5b). In addition, a pair of vacuum guide vanes 54 are formed in the vacuum generating tube 5c so as to contact the inner surface of the inner cylinder 5b to form a vacuum space. 54 is to be installed at an angle that does not deviate from the angular width within the range in close contact with the outer peripheral surface when the sheet extruded from the extrusion nozzle 31 of the extruder 3 with the forming roll (5), in the present invention The embodiment shows that a pair of vacuum guide vanes 54 are formed at an angular width of approximately 80 to 120 degrees. In addition, the pair of vacuum induction blade 54 is formed of a wear-resistant synthetic resin material such as urethane or nylon, the portion starting from the outer periphery of the vacuum generating tube (5c) is thick and gradually toward the inner surface of the inner cylinder (5b) Both ends of the pair of vacuum induction blades 54 are formed integrally with both blocking blades 541 in contact with both sides of the inner surface of the inner cylinder 5b.

In addition, a plurality of vacuum suction holes 542 communicating with the vacuum space formed by the pair of vacuum guide vanes 54 are drilled at regular intervals in the vacuum generating tube 5c.

Both ends of the forming roll 5 are provided with both side rotary joints 55a and 55b for allowing the outer and inner cylinders 5a and 5b to rotate. The one side rotary joint 55a is provided. The cooling water inlet pipe (57a) for supplying and circulating the cooling water supplied from the cooling water circulation pump to the cooling water flow space 56 formed between the outer cylinder 5a (5b), the other rotary joint A coolant outlet pipe 57b for discharging and circulating the coolant circulated to the coolant flow space 56 is formed at 55b.

In addition, a vacuum generating tube 5c protrudes from the center of the one rotary joint 55a, and the other rotary joint 55b is mounted on the other end of the inner cylinder 5a, 5b. 58 is provided, and the power input means 58 is composed of a gear, a pulley, or the like for receiving power from a power device (motor) (not shown).

A tip guide roll 6a for guiding the transfer of the main sheet 1a formed in the forming roll 5 is provided at the lower portion of the forming roll 5 configured as described above, and the tip guide roll 6a At least one intermediate guide roll 6b, 6c is provided at a suitable interval in the rear, and a mortar blocking sheet is disposed on one surface of the main sheet 1a above the tip guide roll 6a and the intermediate guide roll 6c. A solution feeder 8 is formed to form (1b), and on the solution outlet port side of the solution feeder 8, a cooling roll 81 through which cooling water is circulated and a solution are applied to the cooling roll 81 at a predetermined thickness. The braid 82 is provided. Therefore, the solution supplied from the solution supplier 8 is applied to the cooling roll 81 with a thin thickness by the braid 82, and the solution applied to the cooling roll 81 is one surface of the main sheet 1a. That is, the mortar blocking sheet 1b is formed while being continuously bonded to the surface on which the support protrusion 11 and the bending protrusion 12 are not formed.

In addition, the rear upper roll (7a) and the rear end for drawing the pile release material (1) bonded to the main sheet (1a) and mortar blocking sheet (1b) on the rear side of the intermediate guide roll (6c) and transported to the bobbin (9) The lower roll 7b is provided to rotate while being engaged with each other.

The rear end of the intermediate guide roll (6b) (6c) for guiding the main sheet in contact with the surface formed with the support protrusion 11 and the bending protrusion 12 of the main sheet (1a) and the main sheet of the file release material On the outer circumferential surface of each of the lower rolls 7b, grooves 51 and ring grooves having the same structure as the grooves 51 and the ring grooves 52 formed on the outer circumferential surface of the forming roll 5 can be formed to accurately draw out operations of the main sheet and the pile release material. In the case of the intermediate guide rolls 6b and 6c, it is very difficult and expensive to form grooves and annular grooves having the same structure as the forming roll in the intermediate guide rolls and the rear lower rolls. As shown in Fig. 9, the end support portion 61 is formed with a flat circumferential surface so as to support both ends of the main sheet 1a, and the outer circumferential surface is smaller than the diameter of the end support portion 61 and is formed in a flat state. Of sheet 1a The support protrusion 11 and the protrusion support part 62 supporting the bending protrusions 12 were formed. In the case of the rear lower end roll 7b, the main sheet 1a is illustrated in FIG. 10. End support portions 71 are formed at both ends to support both ends of the supporters, and the support protrusions 11 and the bending protrusions 12 of the main sheet 1a are separately disposed between the both end support portions 71. A plurality of protrusion support portions 72 are formed in a ring groove at appropriate intervals so as to support each other, and between the protrusion support portions 72, the support protrusions 11 and the bending protrusions 12 of the main sheet are formed. It was composed of a structure in which a plurality of intermediate support portions 73 made of ring projections for supporting the spaces were formed.

The operation of manufacturing the pile release material 1 with the manufacturing apparatus of the present invention configured as described above will be described.

As shown in FIG. 4, the sheet a extruded from the extrusion nozzle 31 of the extruder 3 is continuously drawn by the tip drawing roll 4 and the forming roll 5 to form the tip guide roll 6a. It is conveyed to the bobbin (9) by way of, and when the extrusion operation of the sheet (a) is started by operating the extruder (3) in this way to supply a vacuum pump and cooling water for generating a vacuum to the vacuum generating tube (5c) The coolant pump will also be driven.

When the vacuum pump is driven, the vacuum generating tube 5c installed at the center of the forming roll 5 sucks and removes the air inside the forming roll 5, and the vacuum suction hole formed in the vacuum generating tube 5c. The parts 542 are formed only between the pair of vacuum guide vanes 54, and the pair of vacuum guide vanes 54 are formed of a sheet roll extruded from the extrusion nozzle 31 as shown in FIG. 5) Since it is installed at an angular width from the point where it starts to contact with the forming roll, the vacuum suction holes 542 intensively suck only the air existing in the inner space between the pair of vacuum guide vanes 54. Accordingly, the through holes 511 and 521 within the angular width range of the pair of vacuum guide vanes 54 also apply vacuum pressure to each of the grooves 51 and the ring grooves 52 to which the sheet a contacts. In addition, the protrusion 41 of the leading drawing roll 4 is applied to the sheet (a) first As the mouth (a) is immersed into each groove 51 and the ring groove 52 is subjected to a vacuum pressure so that the immersion operation into each groove (510 and ring groove 52) Smoothly made and conveyed in the rotational direction of the forming roll (5), and the sheet (a) immersed in each of the grooves 51 and the ring grooves 52 by the vacuum action as described above is one side rotary joint ( It is cooled by the cooling action of the coolant flowing into the coolant flow space 56 through the coolant inlet pipe 57a formed in the 55a) and circulated to the coolant outlet pipe 57b of the other rotary joint 55b. As shown in FIG. 5, the sheet a extruded from the extrusion nozzle 31 is cooled in a solid state in the process of leaving the forming roll 5, and the sheet a leaving the forming roll 5 is shown in FIG. 5. By the plurality of grooves 51 and the plurality of ring grooves 52 formed in the roll (5) As shown in FIG. 11, a plurality of support protrusions 11 and a plurality of bending protrusions 12 are transferred to the tip guide roll 6a in a state in which molding to the main sheet 1a is formed.

As described above, the main sheet 1a formed in the forming roll 5 is drawn by the rotation operation of the upper end roll 7a and the lower end roll 7b after being installed at the rear, and the bottom of the main sheet 1a. That is, each of the intermediate guide rolls 6b and 6c and the rear lower end roll 7b which contact the plurality of support protrusions 11 and the plurality of bending protrusions 1b to guide the transfer of the main sheet 1a, respectively. The outer circumferential surface is formed with protrusion support parts 62 and 72 that can accommodate the plurality of support protrusions 11 and the plurality of bending protrusions 12, without damaging the support protrusions and bending protrusions of the main sheet. It can be safely transported.

On the other hand, during the transfer to the rear upper roll (7a) and the rear lower roll (7b) in the state in which the molding roll 5 is completed as described above, one surface of the main sheet (1a), that is, the support protrusion 11 and bending The mortar blocking sheet 1b is joined to the boring surface on the opposite side of the molten protrusion 12 by a cooling roll 81 in which the synthetic resin solution supplied from the solution supplier 8 is applied to the thickness set by the braid 82. As described above, the main sheet 1a is formed by protruding a plurality of support protrusions 11 and a plurality of bending protrusions 12 from the forming roll 5 from the sheet a extruded from the extruder 3. If the synthetic resin solution continuously discharged in the amount set in the solution feeder 8 during the transfer of the main sheet 1a is applied to the cooling roll 81 with a thin thickness through the braid 82, the cooling roll 81 is made main. While cooling in accordance with the feed speed of the sheet 1a, It is to be attached to the flat surface of the sheet (1a), while the production of the pile release material (1) in which the mortar blocking sheet (1b) is integrally bonded to the main sheet (1a) passing through the cooling roll 81 in this way It is wound up by the bobbin (9).

According to the present invention as described above, a plurality of support protrusions are formed to protrude in a row in the vertical and horizontal direction while drawing the sheet extruded from the extruder, and a plurality of bending protrusions protrude in a continuous state in the longitudinal direction of the H-shaped pile. On the formed main sheet and its flat surface, it is possible to manufacture the mortar blocking sheet which seals the openings of each of the supporting protrusions and the bending protrusions in a series of manufacturing processes, thereby improving the productivity of the pile release material and reducing the production cost. In addition, the plurality of bending protrusions formed on the main sheet of the file release member is a file release member to the H-shaped file to be easily bent at each corner of the wings of both sides of the file when wrapped to wrap around the H-type file Saves time in installing file release materials Enabling, and also to take-off without impairing the H-type file after toryubyeok construction provides the advantage that can be recycled.

Claims (8)

Made of synthetic resin as a raw material, the thickness is thin, and has a width that can cover the entire outer circumference of the H-shaped pile while being extruded continuously in the longitudinal direction of the H-shaped pile, so that a space is formed between the outer peripheral surface of the H-shaped pile. A main sheet having a plurality of supporting protrusions formed vertically and horizontally while maintaining a predetermined interval; In the mold release member having a mortar blocking sheet which is bonded to the opposite side of the support projections as one surface of the main sheet to prevent the concrete mortar from penetrating into the respective support projections, When the support sheet is wrapped in contact with the outer circumferential surface of the H-shaped pile, it is appropriate to bend in the width direction of the main sheet so that the bending can be easily performed at each corner portion of both ends of the wings of the H-shaped pile. A file release material for extracting a file used in constructing a earth wall, further comprising a plurality of bending protrusions formed to continuously protrude in the longitudinal direction of the H-shaped pile while maintaining a spacing. In an extrusion molding machine which continuously extrudes a sheet formed by using a resin as a raw material and having a thin thickness and a wide width, A number of support protrusions are formed on the sheet extruded from the extrusion nozzle of the extruder in the vertical and horizontal direction, and at the same time, a plurality of bending protrusions are continuously connected in the longitudinal direction of the sheet at appropriate intervals with respect to the width direction of the sheet. It characterized in that it comprises a forming roll having a plurality of grooves formed in a predetermined interval on the entire outer circumferential surface and a plurality of annular grooves formed in the circumferential direction at an appropriate interval between the grooves in order to protrude into Pile release material manufacturing apparatus for drawing out the pile used during construction of the earth wall. The method of claim 2, The forming roll includes: an outer cylinder in which a plurality of grooves and a plurality of ring grooves are formed; An inner cylinder installed inside the outer cylinder and installed in a state in which the grooves and the annular grooves are joined to each other while forming a cooling water flow space therebetween; A plurality of through holes formed in the outer cylinder and each of the plurality of annular grooves are formed to be connected to the inner cylinder; Regardless of the rotational operation of the inner cylinder is inserted into and fixed to the center, one end is protruded to one side of the inner cylinder is connected to the vacuum pump, the other end is installed with a vacuum generating tube located inside the inner cylinder and ; It is fixedly installed on the outer circumference of the vacuum generating tube inserted into the inner cylinder, the inner surface of the inner cylinder while allowing the rotational operation of the inner cylinder having an angular width within the range that the sheet extruded from the extruder contact the outer cylinder. A pair of vacuum guide vanes protruding from and contacting the lens; A vacuum suction hole formed in a plurality at regular intervals in a vacuum generating tube inserted into the inner cylinder to generate a vacuum in the space between the pair of vacuum guide vanes; Two rotary joints installed at both ends of the outer cylinder to allow rotational operation of the outer cylinder and connected to the coolant inlet pipe and the coolant outlet pipe; A power input unit connected to one end of the outer and inner cylinders to receive rotational power from the outside to rotate the outer and inner cylinders; Pile release material manufacturing apparatus for withdrawing a file used during construction of the earth wall, characterized in that configured to include. The method of claim 2 or 3, The pair of vacuum guided wings are formed of a wear-resistant synthetic resin-based material, and both ends of the wings are integrally formed with both blocking blades in contact with both ends of the inner surface of the inner cylinder. File release material manufacturing apparatus for withdrawing. The method of claim 2 or 3, Protrusions are formed on the outer circumferential surface of the leading drawing roll which is installed on the upper side of the forming roll and draws the sheet extruded from the extrusion nozzle together with the forming roll to press the sheet into the grooves of the forming roll in a press-in state. Pile release material manufacturing apparatus for drawing out the pile used during construction of the earth wall, characterized in that. The method of claim 2, The intermediate guide roll for guiding the main sheet formed with the supporting projections and the bending projections in the forming roll has an end support portion for supporting both ends of the main sheet, and each support protrusion formed on the main sheet with a diameter smaller than the end support portion; A pile release material manufacturing apparatus for drawing a pile used in constructing a earth wall, characterized in that a protrusion supporting portion for supporting bending protrusions is formed. The method of claim 2, The rear side of the plurality of intermediate guide rolls are formed to include a rear upper roll and a rear lower roll which are laid up and down to continuously draw the main sheet formed in the forming roll, and the outer peripheral surface of the rear upper roll is flat. On the outer circumferential surface of the rear end lower roll, end support portions for supporting both ends of the main sheet, and projection support portions formed in a ring groove to support each of the support protrusions and the bending protrusions formed on the main sheet; , The pile release material manufacturing apparatus for extracting the pile used in the construction of the earth wall, characterized in that the intermediate support is formed between the protrusion support portion is formed in a ring projection. The method of claim 2, At the rear of the forming roll, the main sheet is cooled while a solution supply for supplying a liquid synthetic resin solution from the upper side of the main sheet and a solution in which the synthetic resin solution supplied from the solution supply is applied to the outer circumferential surface with a thin thickness set by the braid. Further comprising a cooling roll to be bonded to the mortar blocking sheet is drawn to one side of the main sheet formed in the forming roll to draw the pile used during construction of the earth wall, characterized in that configured to be manufactured in a state bonded integrally Pile release material manufacturing device.

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