KR102371198B1 - Apparatus of molding the unit plastics pipe inserted a electric wire and method molding the unit plastics pipe thereof - Google Patents

Abstract

The present invention is a "simultaneous molding method", unlike the production of a "pull-in synthetic resin protective pipe (IP)" by the conventional "push lead-in method" in which a sheathed wire is pushed into each independently produced corrugated synthetic resin protective pipe (CP). When forming a corrugated synthetic resin protective tube (CP) by ', a "unit synthetic resin protective tube (UP)" with a sheathed wire inserted therein is molded and manufactured at the same time. It is an invention that allows the "unit synthetic resin protective tube (UP)" to be molded and manufactured at once by the "simultaneous molding method", which is completely irrelevant to the incoming contact frictional force caused by the operation and the subsequent pulling operation.

Description

Apparatus of molding the unit plastics pipe inserted a electric wire and method molding the unit plastics pipe thereof}

The present invention relates to an apparatus for manufacturing a "unit synthetic resin protective pipe (UP)" that is molded and manufactured simultaneously with the inlet of a sheathed wire, and a method for manufacturing a "unit synthetic resin protective pipe (UP)" using the same. More specifically, it is independent of each other Unlike the conventional “push-in method” in which a sheathed wire is pushed into a corrugated synthetic resin protective pipe (CP) manufactured with When molding the synthetic resin protective tube (CP), the “unit synthetic resin protective tube (UP)” with the sheathed wire inserted therein is molded and manufactured at the same time, so that the follow-up operation of the sheathed wire lead-in combined with the conventional “push lead-in method” and its subsequent lead-in It relates to an invention in which a "unit synthetic resin protective tube (UP)", which has nothing to do with incoming contact frictional force due to work, is molded and manufactured at once by a "simultaneous molding method".

Unlike the "Ingress Synthetic Resin Protection Pipe (IP)", which is molded and manufactured independently of each other as the "Unit Synthetic Resin Protection Pipe (UP)" is molded simultaneously with the insulated wire, the production of the "Unit Synthetic Resin Protection Pipe (UP)" that is molded at once is efficient and economical

In particular, in the installation of the electric wire and the air supply pipe 340 of the induction straight part 334, the electric wire and the air supply pipe 340 of the induction straight part 334 have an insertion path of the sheathed electric wire 810 and an injection path of compressed air. It is a useful invention that protects the coated wire from the heat of resin fusion by an air curtain.

In general, various electric wires, communication lines, internet lines, etc. (hereinafter referred to as 'covered cables') are installed on the ground, underground, or on the seabed. These 'covered wires' are usually covered with an insulating material such as PVC. In addition, the 'covered wire' is protected by a synthetic resin protective tube, especially a corrugated synthetic resin protective tube. This is to protect against external forces and short circuits. In particular, the synthetic resin corrugated protective pipe is effective for burial in the ground because it is strong in load.

As in Korean Patent Application Laid-Open No. 2002-0042908, the coated wire 3 is protected by a coating such as PE or PVC (see FIG. 1).

Again, the sheathed wire 2 is protected by a synthetic resin corrugated pipe (cp) 1 having excellent support strength as shown in FIG. 1 .

The shielded wire 2 should be built into the corrugated pipe cp 1 as shown in FIG. 1 for its protection. At this time, the sheathed wire 2 and the corrugated pipe (cp) (1) are two separate members each independently manufactured. In order for the covered wires 2 to be embedded in the corrugated pipe (cp) 1, they are inserted by a “push lead-in method” in which the coated wires 2 are pushed into the corrugated pipe (cp) 1 one by one. . As such, in the "push-in method", there must be a follow-up operation for the in-flow.

The problems of the "push lead-in method" in which the insulated wires 2 manufactured independently of each other are drawn into the corrugated pipe cp 1 are as follows.

First, even if the diameter of the corrugated pipe (cp) (1) is relatively large compared to the covered wire (2), the longer the length of the incoming covered wire (2) is (for example, 50 m or more), the longer the length of the inlet coated wire (2) is (for example, 50 m or more). It is a problem that it is not easy to even hang it. This is because even if the contact area of the contact point between the incoming sheathed wire 2 and the inner surface of the large-diameter corrugated pipe (cp) 1 is not large, the sum of the contact areas of all contact points becomes that much larger in proportion to the lead-in length. This is because it is difficult to enter the contact friction force that is proportionally increased.

Second, when the diameter of the corrugated pipe (cp) (1) is a small diameter that is not large compared to the covered wire (2), the contact area of the corrugated pipe (cp) (1) with the covered wire (2) is higher than that of the large diameter. Since it is large, it becomes more difficult to draw in the large contact friction force in the small-diameter corrugated pipe (cp) (1), and the small-diameter pull-in body of the sheathed wire (2) is also a more difficult problem.

An attempt to reduce the contact friction force at the time of retraction, which is the above problem, is disclosed in FIG. 2 (Utility Model Publication No. 1989-0005566). In order to reduce the frictional contact area, a gently curved wavy yawdol ring (3) is formed on the inner tube (1) of the synthetic resin tube.

However, even if the frictional contact area is reduced by the wavy undulation wheel 3, it is not that there is no frictional contact area at all, but a small frictional contact area exists. Same problem as above.

Next, looking at utility model registration No. 20-0327106 (Figs. 3a, 3b, 3c) for a manufacturing apparatus for a generally used corrugated synthetic resin pipe (cp; hereinafter referred to as a corrugated pipe), the following same as

3A is a schematic overall structural diagram of an apparatus for manufacturing a corrugated tube (cp).

Only the corrugated pipe cp is molded by the apparatus for manufacturing the corrugated pipe cp of FIG. 3A.

Since the lead-in of the sheathed wire into the corrugated pipe cp formed in this way is made by the "push lead-in method", the problem of the subsequent pull-in operation is the same as the above problem.

According to the overall structural diagram of Fig. 3a, "resin supply unit 2 → resin conveying cylinder 3 → cp forming unit 4 → cooling unit 5 → cp conveying unit 6 → winding unit 7" is made in the order .

The cp molding part 110 of FIGS. 3b and 3c is a more detailed embodiment of the cp molding part 4 of FIG. 3a.

3b and 3c, the cp forming part 110 includes a pair of cylindrical plate support rods 101 coupled to the upper part of the frame 100 in a horizontal state, and a roller 103 on each plate support rod 101. It is supported so as to be horizontally moved by the corrugated tube and consists of a corrugated tube forming unit 110 in which a corrugated tube cp is formed while a plurality of molds 200 are circulated on the upper surface.

At this time, the corrugated tube forming part 110 is composed of a rectangular ellipse in the longitudinal direction of the base plate 111 and a pair of mold transfer lines 112 and symmetrically mounted mold transfer lines 112 are formed. A cooling block 113 provided with a plurality of molds 200 individually flowing along the flow and a cooling water passage 114 serving as a cooling water transfer passage is mounted on the inner peripheral surface of the elliptical mold transfer line 112 on the inner side.

The forming process of the corrugated tube cp by the cp forming unit 110 of FIGS. 3B and 3C will be described.

The synthetic resin straight pipe (that is, referring to the circular pipe just before molding of the corrugate) transferred through the resin transport cylinder 3 of FIG. 3A is introduced into the mold 200 in the direction of the arrow of FIG. 3C that is continuously circulated. The corrugated pipe cp is molded by the mold 200 on the outer peripheral surface of the synthetic resin straight pipe in a semi-molten state while being matched at the inlet 115a side introduced into the mold 200 . The corrugated pipe (cp), which has been molded and cooled in this way, is wound on a winding section.

⒜ The present invention is different from the production of the "Push-in synthetic resin protective pipe (IP)" by the conventional "push lead-in method" in which the sheathed wire is pushed into the corrugated synthetic resin protective pipe (CP) produced independently of each other. When the corrugated synthetic resin protective pipe (CP) is molded by the 'molding method', the "unit synthetic resin protective pipe (UP)" with the sheathed wire inserted therein is simultaneously molded and manufactured, so that the coated wire merged with the conventional "push lead-in method" The purpose is to mold and manufacture the "Unit Synthetic Resin Protection Pipe (UP)", which is completely irrelevant to the incoming contact friction force due to the follow-up operation and the subsequent pull-in operation, by the "simultaneous molding method",

⒝ The “Unit Synthetic Resin Protection Pipe (UP)” is molded at the same time with the insulated wire, so unlike the “Ingress Synthetic Resin Protection Pipe (IP)”, which is molded and manufactured independently of each other, the production of the “Unit Synthetic Resin Protection Pipe (UP)” that is molded at once is difficult. There are other purposes to make it efficient and economical,

⒞ As long as the 「Unit Synthetic Resin Protection Pipe (UP)」, which does not require a sheathed wire lead-in operation, is manufactured integrally from the beginning of molding, unlike the conventional 「push entry method」, unless there is a restriction on transport and transport, the 「Unit Synthetic Resin Protection Pipe ( UP)” has another purpose so that the production length is not limited,

⒟ In particular, in the installation of the electric wire and the air supply pipe 340 of the induction straight part 334, the electric wire and the air supply pipe 340 of the induction straight part 334 are inserted into the covered wire 810 and the compressed air injection passage. Another purpose is to protect the covered wire from the heat of resin fusion by an air curtain,

⒠ At the tip of the die 300, the die head part 320 and the guide guide pipe 330 in which the inner space communicates with each other are sequentially formed integrally, and the electric wire and air supply pipe 340 at the longitudinal center of the inner space part is located, and at this time, there is a conical molten resin passage (e) between the wire and air supply pipe 340 and the conical guide inclined portion 332 of the guide guide pipe 330, and the wire and air supply pipe 340 and the guide straight part Between (334), a straight molten resin passage (b) is formed, so that the molten resin is guided from the wide conical side to the narrow diameter r of the linear molten resin passage (b), and a small diameter resin wire straight pipe (t) with dense density (t) wrsp) (900A) is extruded, and the extruded small-diameter wire straight pipe (wrsp) is again extruded into the large-diameter R caterpillar molding inlet 430, and the air supply pipe 350 injected into the electric wire and the air supply pipe 340 Another object is to allow the large-diameter wire corrugated pipe (wRcp) 900B to be continuously molded and extruded while the resin small-diameter wire straight pipe (wrsp) 900A is expanded to the large-diameter R by the compressed air of

The configuration of the manufacturing apparatus of the "unit synthetic resin protective pipe (UP)", which is molded and manufactured at the same time as the lead-in of the insulated wire according to the present invention, will be described as follows.

An extruder that receives raw materials from a hopper and transports the synthetic resin liquid in a semi-molten state, a corrugated molded caterpillar in which the transferred molten synthetic resin liquid is molded into a corrugated tube, and a water cooling device for cooling the molded corrugated tube, and winding it through it In an apparatus for manufacturing a synthetic resin corrugated tube having a manufacturing line wound on a machine

The space portion (S) of the die 300 and the die head portion 320 through which the synthetic resin liquid in a semi-molten state transferred from the extruder 100 and the extruder head 110 is passed through the right-angled connection pipe (C) and extruded; It consists of a conical molten resin passage (e) of the conical induction inclined portion 332 of the guide guide pipe 330 and a linear melt resin passage (b) of the guide straight portion 334 of the guide guide tube 330, but with a straight molten resin The end of the passage (b) and the end of the induction straight portion 334 have the same cross-section, the straight molten resin passage (b) ends with the extruded resin, and the wire and air supply pipe 340 end insertion hole (a) is a covered wire. 810 is drawn out and a small-diameter wire straight pipe (wrsp) 900A having a built-in sheathed wire 810 is molded and extruded. It is installed across the center line of the longitudinal center line and the conical induction slope 332 and the induction straight line 334, which are extensions thereof, and the conical molten resin passage (e) is an electric wire and an air supply pipe 340 and a conical induction slope ( 332), and the straight molten resin passage (b) is a configuration formed between the electric wire and the air supply pipe 340 and the induction straight part 334, and the insertion hole (a) of the electric wire and the air supply pipe 340 is an air supply pipe On the other hand, the compressed air of 350 and the coated wire 810 of the coated wire supply reel 800 pass through, while the small diameter wire straight pipe (wrsp) 900A is the compressed air of the air supply pipe 350 and the corer. Manufacturing of "unit synthetic resin protective tube (UP)" which is molded and manufactured simultaneously with the inlet of a covered wire, characterized in that the large-diameter wire corrugated pipe (wRcp) expanded and expanded by the gate molding caterpillar 400 is continuously and molded it is a device

here it is

The extrusion speed of the semi-molten synthetic resin liquid extruded through the conical molten resin passage (e) of the conical induction inclined portion 332 to the linear molten resin passage (b) of the induction straight portion 334 and the wire and air supply pipe (340) Manufacturing of "unit synthetic resin protective tube (UP)" which is molded and manufactured simultaneously with the inlet of the covered wire, characterized in that the withdrawal speed of the covered wire 810 and the expansion molding transfer speed of the corrugated caterpillar 400 are kept the same it is a device

Not only that,

"Extruder (100) → Extruder head (110)" line, and "Coated wire supply reel (800) → Die (300) → Corrugated Caterpillar (400) → Water cooling device (500) → Winding roll (700)" The line is a straight line parallel to each other, and these two lines are connected by a right-angle connector (C), while the coated wire 810 wound around the coated wire supply reel 800 is connected to the electric wire and the air supply pipe in the die 300 ( 340), the corrugated molded caterpillar 400 and the water cooling device 500 are installed in a straight line on the winding roll 700, and the passage of the synthetic resin liquid in the semi-molten state is conical. The molten resin passage (e) and the straight molten resin passage (b), and the small diameter wire straight pipe (wrsp) 900A molded from the end of the induction straight part 334 that is combined with the two is extruded, and the corrugated molded caterpillar 400 Manufacturing of "Unit Synthetic Resin Protection Pipe (UP)" which is molded and manufactured simultaneously with the inlet of the coated wire, characterized in that the large diameter wire corrugated pipe (wRcp) 900B molded while passing through is wound on the winding roll 700 it is a device

also,

In connecting the inflection point between the conical induction slope 332 and the guide straight line 334 of the guide guide pipe 330, the inclination angle of the conical guide inclined portion 332 is 15 to 20 degrees with respect to the guide line 334. and the gentle inflection passage (diameter r), in which the conical molten resin passage (e) is gradually narrowed by this inclination angle, becomes the diameter r of the linear molten resin passage (b), so that the semi-melted synthetic resin solution is a straight molten resin passage of length L. A "unit synthetic resin protective pipe (UP) which is molded and manufactured simultaneously with the inlet of a covered wire, characterized in that a small-diameter wire straight pipe (wrsp) 900A of a uniform thickness (t) of a certain density is molded while passing through (b) )" manufacturing equipment.

Here, the covered wire 810 includes a covered wire, a communication line, an Internet line, and the like, and will be collectively referred to as a 'covered wire' for convenience of description.

The coated wire 810 is an invention for simultaneously molding a "unit synthetic resin protective tube (UP)" in which the coated wire 810 is embedded when molding a synthetic resin corrugated tube (cp) using a commercially available one. It is characterized in that it is molded and manufactured at a time by the “simultaneous molding method” rather than the conventional “push lead-in method” in which the sheathed wire 810 is separately manufactured by a synthetic resin corrugated pipe (cp) and the sheathed wire is pushed in. .

In connecting the inflection point between the conical guide inclined part 332 and the guide straight part 334 of the guide guide pipe 330, the inclination angle of the conical guide inclined part 332 is 15 to 20 degrees with respect to the guide straight part 334. The gentle inflection passage (diameter r) in which the conical melted resin passage (e) is gradually narrowed is connected to the diameter r of the straight melted resin passage (b), and the semi-melted synthetic resin liquid flows to the end of the linear melted resin passage (b) of length L. It becomes a certain density and uniform thickness (t) according to the extrusion speed of the extruded and molded small-diameter straight wire pipe (wrsp) (900A).

When the inclination angle of the conical induction slope part 332 is 20 degrees or more, the inflection of the conical molten resin passage (e) and the linear molten resin passage (b) is large, so that the inflow of the semi-molten synthetic resin liquid into the linear molten resin passage (b) is smooth. There is a disadvantage in that it is not achieved, and when it is 15 degrees or less, the inflection is small, and there is a disadvantage in that the inflow into the straight molten resin passage (b) becomes slow. At this time, the length of the straight molten resin passage (b) L is preferably 30 to 40 cm.

The small-diameter wire straight pipe (wrsp) 900A extruded from the end of the straight molten resin passage (b) is introduced into the corrugated molded caterpillar 400 . At this time, the diameter of the small-diameter straight wire pipe (wrsp) 900A is r, and the diameter of the inlet of the corrugated caterpillar 400 is R. Since r<R, a large-diameter wire corrugated pipe (wRcp) 900B is formed while the small-diameter wire straight pipe (wrsp) 900A passes through the corrugated-forming caterpillar 400 . Unlike the large diameter wire corrugated pipe (wRcp) 900B, the small diameter wire straight pipe (wrsp) 900A is not formed with a corrugated gate.

The small diameter wire straight pipe (wrsp) 900A is expanded/expanded into the large diameter wire corrugated pipe (wRcp) in the corrugated caterpillar 400 by the compressed air supplied to the electric wire and the air supply pipe 340 .

The extrusion speed of the semi-molten synthetic resin liquid extruded through the conical molten resin passage (e) of the conical induction inclined portion 332 to the linear molten resin passage (b) of the induction straight portion 334 and the wire and air supply pipe (340) It is preferable that the drawing-out speed of the covered wire 810 and the expansion-molding feed speed of the corrugated caterpillar 400 are maintained the same.

In order to form a small-diameter straight wire pipe (wrsp) (900A) and a large-diameter wire corrugated pipe (wRcp) with uniform quality and density.

⒜ The present invention is different from the production of the "Push-in synthetic resin protective pipe (IP)" by the conventional "push lead-in method" in which the sheathed wire is pushed into the corrugated synthetic resin protective pipe (CP) produced independently of each other. When forming a corrugated synthetic resin protective pipe (CP) by “molding method”, a “unit synthetic resin protective pipe (UP)” with a sheathed wire inserted therein is simultaneously molded and manufactured, so that the coated wire lead-in combined with the conventional “push lead-in method” It has the effect of molding and manufacturing the “Unit Synthetic Resin Protection Pipe (UP)” at once by the “Simultaneous Molding Method”, which is completely irrelevant to the incoming contact frictional force due to the follow-up work and the subsequent pull-in work.

⒝ In addition, unlike the “Ingress synthetic resin protective pipe (IP)”, which is molded and manufactured independently of each other by simultaneous molding of the “Unit Synthetic Resin Protection Pipe (UP)” with the insulated wire, the “Unit Synthetic Resin Protection Pipe (UP)” is molded at once. This has an efficient and economical effect,

⒞ In addition, as the 「Unit Synthetic Resin Protection Pipe (UP)」, which does not require the insulated wire lead-in work, is integrally manufactured from the beginning of molding, unlike the conventional “push lead-in method”, unless there is a restriction on transport and transport, the There is an effect that the production length of 'Protective Tube (UP)' is not limited,

⒟ In particular, in the installation of the electric wire and the air supply pipe 340 of the induction straight part 334, the electric wire and the air supply pipe 340 of the induction straight part 334 are inserted into the covered wire 810 and the compressed air injection passage. It is a useful invention that has the effect of protecting the covered wires from the heat of resin fusion by an air curtain.

[Figure 1] A perspective view showing a state in which a conventional sheathed wire is inserted into a corrugated synthetic resin tube
[Figure 2] A perspective view showing a state in which a corrugated wheel (3) is formed on the inner wall of the conventional synthetic resin inner tube (1) to reduce incoming contact friction
[Fig. 3a] A schematic overall structural diagram of a conventional corrugated tube manufacturing apparatus
[Fig. 3b] A perspective view of a conventional corrugated tube manufacturing apparatus used in Fig. 3a
[Fig. 3c] A perspective view of the main part of the mold transfer line in Fig. 3b
[Figure 4] The present invention "extruder 100 → extruder head 110" line (J), and "clad wire supply reel 800 → dice 300 → corrugated forming caterpillar 400 → water cooling device ( 500) → Winding roll 700” transfer line state diagram showing the state in which the line (K) is installed in a straight line parallel to each other
[Fig. 5] A plan view of Fig. 4
[Fig. 6] AA cross-sectional view of Fig. 5

The configuration of the manufacturing method of the "unit composite resin protective pipe (UP)" using the manufacturing device that is molded and manufactured simultaneously with the incoming of the insulated wire will be described as follows.

An extruder that receives raw materials from a hopper and transports the synthetic resin liquid in a semi-molten state, a corrugated molded caterpillar in which the transferred molten synthetic resin liquid is molded into a corrugated tube, and a water cooling device for cooling the molded corrugated tube, and winding it through it In the method for manufacturing a synthetic resin corrugated pipe having a manufacturing line wound on the machine

⒜ 「Extruder (100)→Extruder head (110)」line (J) and 「Coated wire supply reel (800)→Dice (300)→Corrugate forming caterpillar (400)→Water cooling device (500)→winding roll (700)" line (K) is a straight line parallel to each other, the two lines (J) (K) is connected by a right-angled connection pipe (C);

⒝ When installing the line (K), the coated wire 810 wound around the coated wire supply reel 800 is inserted into the electric wire and the air supply pipe 340 in the die 300, and the corrugated molded caterpillar 400 and water are cooled. Installing the winding roll 700 through the device 500 in a straight line;

⒞ The synthetic resin liquid in a semi-molten state transferred from the extruder 100 through the right-angle connector (C) passes through the conical molten resin passage (e) of the conical induction inclined part 332 of the die head part 320, and the guide straight part (334) is extruded to the end of the straight molten resin passage (b) and at the same time the covered wire 810 is drawn out from the end of the electric wire and the air supply pipe 340, and the covered wire 810 is built-in small diameter wire straight pipe (wrsp) ( 900A) is molded and extruded;

⒟ The tip of the small-diameter straight wire pipe (wrsp) 900A is inserted into the diameter R of the corrugated caterpillar 400 through the wire and the air supply pipe 340 into which the coated wire 810 is inserted. A large-diameter wire corer in which the small-diameter straight wire pipe (wrsp) 900A is expanded and expanded in the corrugated molded caterpillar 400 by supplying compressed air from the air supply pipe 350 into the small-diameter straight wire pipe (wrsp) 900A. The gate tube (wRcp) (900B) is continuously molded;

⒠ the step of winding the molded large-diameter wire corrugated pipe (wRcp) (900B) on the winding roll 700 through the water cooling device 500; It is a manufacturing method of "unit synthetic resin protective pipe (UP)" using a manufacturing device.

here,

The extrusion speed of the semi-molten synthetic resin liquid extruded through the conical molten resin passage (e) of the conical induction inclined portion 332 to the linear molten resin passage (b) of the induction straight portion 334 and the wire and air supply pipe (340) "Unit synthetic resin protective tube (UP) using a manufacturing device that is simultaneously molded and manufactured with the inlet of the coated wire, characterized in that the withdrawal speed of the covered wire 810 and the expansion shaping transfer speed of the corrugated caterpillar 400 are kept the same )" is the manufacturing method.

Not only that,

In connecting the inflection point between the conical induction slope 332 and the guide straight line 334 of the guide guide pipe 330, the inclination angle of the conical guide inclined portion 332 is 15 to 20 degrees with respect to the guide line 334. and the gentle inflection passage (diameter r), in which the conical molten resin passage (e) is gradually narrowed by this inclination angle, becomes the diameter r of the linear molten resin passage (b), so that the semi-melted synthetic resin solution is a straight molten resin passage of length L. While passing through (b), a small-diameter wire straight pipe (wrsp) 900A of a uniform thickness (t) of a certain density is molded, while inserted by an air curtain of compressed air injected into the wire and the air supply pipe 340 It is a manufacturing method of a "unit synthetic resin protective pipe (UP)" using a manufacturing device that is molded and manufactured at the same time as the inlet of the covered wire, characterized in that the coated wire 810 is protected.

The corrugated caterpillar 400 is configured by two caterpillar moving bars 410 installed in parallel on the caterpillar pedestal 420 . By adjusting the forward and backward movement of the caterpillar moving bar 410 , the distance between the corrugated shaped caterpillar 400 and the guide guide tube 330 can be adjusted.

The corrugated molded caterpillar 400 is two rotational orbits in the shape of a track. The cross-section of the two orbits is a circular cross-section with a diameter of R, and the expanded/expanded large-diameter wire corrugated pipe (wRcp) passes through it and is molded and extruded.

In this way, the present invention is formed and manufactured at a time by a “simultaneous molding method” unlike the conventional “push lead-in method” in which the separately manufactured sheathed wire 810 is pushed into the synthetic resin corrugated pipe (cp). It is a useful invention with its characteristics to make it happen.

100: extruder 100, 110: extruder head 110,
200: hopper (200),
300: dice 300, 310: dice inlet 310, 320: dice head portion 320, 330: guide guide tube 330, 332: conical guide inclined portion (332), 334: guide straight portion (334) ), 340: electric wire and air supply pipe 340, a; Insertion hole (a)
350: air supply pipe (350),
400: corrugated molded caterpillar 400, 410: caterpillar moving bar 410, 420: caterpillar pedestal 420,
500: water cooling device (500), 600: printer (600),
700: winding roll (700),
800: wire supply reel (800), 810: covered wire (810),
900A; Small diameter wire straight pipe (wrsp) (900A),
900B; Large diameter wire corrugated pipe (wRcp) (900B),
r<R
C; Right angle connector (C),
S; Dice space part (S)

Claims (7)

An extruder that receives raw materials from a hopper and transports the synthetic resin liquid in a semi-molten state, a corrugated molded caterpillar in which the transferred molten synthetic resin liquid is molded into a corrugated tube, and a water cooling device for cooling the molded corrugated tube, and winding it through it In an apparatus for manufacturing a synthetic resin corrugated tube having a manufacturing line wound on a machine

The space portion (S) of the die 300 and the die head portion 320 through which the synthetic resin liquid in a semi-molten state transferred from the extruder 100 and the extruder head 110 is passed through the right-angled connection pipe (C) and extruded; It consists of a conical molten resin passage (e) of the conical induction inclined portion 332 of the guide guide pipe 330 and a linear melt resin passage (b) of the guide straight portion 334 of the guide guide tube 330, but with a straight molten resin The end of the passage (b) and the end of the induction straight portion 334 have the same cross-section, the straight molten resin passage (b) ends with the extruded resin, and the wire and air supply pipe 340 end insertion hole (a) is a covered wire. 810 is drawn out and a small-diameter wire straight pipe (wrsp) 900A having a built-in sheathed wire 810 is molded and extruded. It is installed across the center line of the longitudinal centerline and the conical induction slope 332 and the induction straight line 334, which are extensions thereof, and the conical molten resin passage (e) is an electric wire and an air supply pipe 340 and a conical induction slope ( 332), and the straight molten resin passage (b) is a configuration formed between the electric wire and the air supply pipe 340 and the induction straight part 334, and the insertion hole (a) of the electric wire and the air supply pipe 340 is an air supply pipe The compressed air of 350 and the covered wire 810 of the covered wire supply reel 800 pass through, while the small diameter wire straight pipe (wrsp) 900A is the compressed air of the air supply pipe 350 and the corer. Manufacturing of "unit synthetic resin protective tube (UP)" which is molded and manufactured simultaneously with the inlet of a covered wire, characterized in that the large-diameter wire corrugated pipe (wRcp) expanded and expanded by the gate molding caterpillar 400 is continuously and molded Device 2. The method of claim 1
The extrusion speed of the semi-molten synthetic resin liquid extruded through the conical molten resin passage (e) of the conical induction inclined portion 332 to the linear molten resin passage (b) of the induction straight portion 334 and the wire and air supply pipe (340) Manufacturing of "unit synthetic resin protective tube (UP)" which is molded and manufactured at the same time as the inlet of the covered wire, characterized in that the withdrawal speed of the covered wire 810 and the expansion molding transfer speed of the corrugated caterpillar 400 are kept the same Device 2. The method of claim 1
“Extruder (100) → Extruder head (110)” line and “Coated wire supply reel (800) → Die (300) → Corrugated Caterpillar (400) → Water cooling device (500) → Winding roll (700)” The line is a straight line parallel to each other, and these two lines are connected by a right-angle connector (C), while the coated wire 810 wound around the coated wire supply reel 800 is connected to the electric wire and the air supply pipe in the die 300 ( 340) through the insertion hole (a), the corrugated molded caterpillar 400 and the water cooling device 500, and installed in a straight line on the winding roll 700, the passage of the synthetic resin liquid in the semi-molten state is conical The molten resin passage (e) and the straight molten resin passage (b), and the small diameter wire straight pipe (wrsp) 900A molded from the end of the induction straight part 334 that is combined with the two is extruded, and the corrugated molded caterpillar 400 Manufacturing of "unit synthetic resin protective pipe (UP)" which is molded and manufactured simultaneously with the inlet of the covered wire, characterized in that the large-diameter wire corrugated pipe (wRcp) 900B molded while passing through is wound on the winding roll 700 Device 2. The method of claim 1
In connecting the inflection point between the conical induction slope 332 and the guide straight line 334 of the guide guide pipe 330, the inclination angle of the conical guide inclined portion 332 is 15 to 20 degrees with respect to the guide line 334. and the gentle inflection passage (diameter r), in which the conical molten resin passage (e) is gradually narrowed by this inclination angle, becomes the diameter r of the linear molten resin passage (b), so that the semi-melted synthetic resin solution is a linear molten resin passage of length L. "Unit synthetic resin protective pipe (UP) which is molded and manufactured simultaneously with the inlet of a sheathed wire, characterized in that a small-diameter wire straight pipe (wrsp) 900A of a uniform thickness (t) of a certain density is molded while passing through (b) )" manufacturing equipment An extruder that receives raw materials from a hopper and transports the synthetic resin liquid in a semi-molten state, a corrugated molded caterpillar in which the transferred molten synthetic resin liquid is molded into a corrugated tube, and a water cooling device for cooling the molded corrugated tube, and winding it through it In the method for manufacturing a synthetic resin corrugated tube having a manufacturing line wound on the machine

⒜ 「Extruder (100)→Extruder head 110」line (J) and 「Coated wire supply reel (800)→Die (300)→Corrugate forming caterpillar (400)→Water cooling device (500)→Wining roll (700) "line (K) is a straight line parallel to each other, and the two lines (J) (K) are connected by a right-angled connection pipe (C);

⒝ When installing the line (K), the coated wire 810 wound around the coated wire supply reel 800 is inserted into the electric wire and the air supply pipe 340 in the die 300, and the corrugated molded caterpillar 400 and water are cooled. Installing the winding roll 700 through the device 500 in a straight line;

⒞ The synthetic resin liquid in a semi-molten state transferred from the extruder 100 through the right-angle connector (C) passes through the conical molten resin passage (e) of the conical induction inclined part 332 of the die head part 320, and the guide straight part (334) is extruded to the end of the straight molten resin passage (b) and at the same time the covered wire 810 is drawn out from the end of the electric wire and the air supply pipe 340, and the covered wire 810 is built-in small diameter wire straight pipe (wrsp) ( 900A) is molded and extruded;

⒟ The tip of the small-diameter straight wire pipe (wrsp) 900A is inserted into the diameter R of the corrugated caterpillar 400 through the wire and the air supply pipe 340 into which the coated wire 810 is inserted. A large-diameter wire corer in which the small-diameter straight wire pipe (wrsp) 900A is expanded and expanded in the corrugated molded caterpillar 400 by supplying compressed air from the air supply pipe 350 to the inside of the small-diameter straight wire pipe (wrsp) 900A. The gate tube (wRcp) (900B) is continuously molded;

⒠ the step of winding the molded large-diameter wire corrugated pipe (wRcp) (900B) on the winding roll 700 through the water cooling device 500; Manufacturing method of "Unit synthetic resin protective pipe (UP)" using a manufacturing device 6. The method of claim 5
The extrusion speed of the semi-molten synthetic resin liquid extruded through the conical molten resin passage (e) of the conical induction inclined portion 332 to the linear molten resin passage (b) of the induction straight portion 334 and the wire and air supply pipe (340) "Unit synthetic resin protective tube (UP) using a manufacturing device that is simultaneously molded and manufactured with the inlet of the coated wire, characterized in that the withdrawal speed of the covered wire 810 and the expansion shaping transfer speed of the corrugated caterpillar 400 are kept the same )" manufacturing method 6. The method of claim 5
In connecting the inflection point between the conical induction slope 332 and the guide straight line 334 of the guide guide pipe 330, the inclination angle of the conical guide inclined portion 332 is 15 to 20 degrees with respect to the guide line 334. and the gentle inflection passage (diameter r), in which the conical molten resin passage (e) is gradually narrowed by this inclination angle, becomes the diameter r of the linear molten resin passage (b), so that the semi-melted synthetic resin solution is a linear molten resin passage of length L. While passing through (b), a small-diameter wire straight pipe (wrsp) 900A of a uniform thickness (t) of a certain density is molded, while inserted by an air curtain of compressed air injected into the wire and the air supply pipe 340 Manufacturing method of "unit synthetic resin protective pipe (UP)" using a manufacturing device that is molded and manufactured at the same time as the inlet of the coated wire, characterized in that the coated wire 810 is protected

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