KR200351329Y1 - Manefacturing apparatus for a spiral pipe having a hole - Google Patents

Abstract

The present invention relates to a molding apparatus for producing a spiral hole tube.

The spiral perforated tube forming machine of the present invention includes an extruded die into which a liquid resin is injected, a mandrel rotated by a chain gear driving coupled to a socket in front of the extruded die, and a spiral pipe conveyed through one end of the mandrel. A cutting jig fitted to the inner circumferential surface and equipped with at least one cutter on the outer circumferential surface, a cylindrical body including a coolant passage surrounding the mandrel and spraying coolant to the outer circumferential surface of the mandrel, and a transfer of the hollow pipe continuously drawn out in front of the cylindrical body. There is a technical feature in that it consists of a belt driving part for guiding the path.

The spiral perforated tube forming machine of the present invention improves the productivity of the spiral perforated tube and has the advantage that the perforated tube can be formed regardless of the pitch of the spiral tube and the number of through holes formed on the outer circumferential surface of the spiral and the spiral.

Description

Manufacturing apparatus for a spiral pipe having a hole}

The present invention relates to a molding apparatus for manufacturing a spiral perforated tube, more specifically, a spiral tube is formed while being drawn out from the extruded die through a mandrel forming machine, and the spiral tube is cold-formed at least on the inner peripheral surface of the spiral tube which is molded and transferred to one end of the mandrel Spiral perforated tube forming machine that forms a perforated tube by the rotation of a cutting jig equipped with one or more cutting blades. It is about.

Generally, the merit pipe is vertically typed to improve the soft ground and is mainly used for the construction of draining the water contained in the ground to the ground, and the purpose of drainage in the construction of tunnels, golf courses, roads, buildings, etc. It is mainly used, and nonwoven fabric is mainly overlaid on the outer circumference to increase the water collecting and draining effect and to prevent the inflow of soil to prevent the blockage of the pipeline.

In addition, since the perforated pipe has high porosity and excellent chemical resistance, it can be used semi-permanently because it is resistant to corrosion and corrosion and has excellent external pressure strength.

As described above, a conventional hole tube forming machine for forming a hole tube is cooled by forming a spiral tube while passing through a mandrel rotating in a vacuum state of a liquid synthetic resin conveyed through an extrusion die.

At this time, the mandrel of the perforated tube forming machine is a structure that is rotated in an external vacuum state is provided with a cooling passage circulating the cooling water only inside the spiral tube forming portion of the mandrel is rotated because the cooling water is circulated through the cooling passage in the mandrel Due to the indirect cooling of the spiral tube formed by the inferior cooling efficiency is significantly reduced.

Such conventional spiral perforated tube forming machine uses a separate mill factory to form a hole in the outer circumferential surface of the spiral tube, or the worker can perforate by hand manually, but the work of the perforated to form the perforated tube than the forming time of the spiral tube The disadvantage is that it takes longer.

In addition, the conventional perforated tube forming machine is formed by a perforator that flows up and down by a pneumatic cylinder immediately before or after the forming of the spiral tube before or after the forming of the spiral tube before or after the mandrel forming machine in which the spiral tube is formed and cooled. By forming, a number of scraps are generated for each of the perforations in the perforated pipe, and the problem that the flow of the fluid transported therein is pointed out.

In addition, if the feed rate and the flow rate of the perforator using the pneumatic cylinder do not coincide in the process of forming and conveying the spiral tube through the mandrel, not only uniformly spaced perforation is achieved, but also a plurality of spiral tubes are located on the outer circumferential surface of the spiral tube. There is a difficulty in controlling the perforator at the same time.

Therefore, the present invention has been made to solve all the disadvantages and problems raised in the conventional spiral perforated tube forming machine, the spiral bones having different depths are formed on the inner circumferential surface of the spiral tube drawn out through the mandrel forming machine from the extrusion die at regular intervals The spiral jig is formed to be formed by the cutting jig is mounted to the inside of the spiral tube is rotated so that the cutting hole is formed by cutting the spiral bone by the rotation of the cutting jig, the spiral drawn out continuously Spiral perforated tube forming machine that improves the productivity of perforated pipes by forming the perforated pipes using cutting jig with cutting blade at the same time as the cooling of the pipes, and also allows the perforated pipes to be manufactured regardless of the pitch and spiral of spiral pipes. The purpose of the present invention is to provide.

1 is an overall cross-sectional view of a hole tube forming machine according to the present invention.

Figure 2 is a front view of the cutting jig of the hole tube forming machine according to the present invention.

Figure 3 is a perspective view of a cutter mounted to the cutting jig of the present invention perforated tube molding machine.

Figure 4 is a cross-sectional view of the cutting jig of the hole tube forming machine according to the present invention.

((Explanation of symbols for main parts of drawing))

11. Extrusion die 12. Mandrel drive shaft

14. Mandrel 17. Cylindrical

18. With coolant 19. Belt drive

20. Cutting jig 25. Cutter

26. Cutting blade 27. Cutter fixture

29. Drive shaft 31. Through hole

The object of the present invention, the extrusion die in which the liquid resin is injected, the mandrel rotated by a chain gear drive coupled to the socket and coupled to the front of the extrusion die, and the spiral pipe conveyed through one end of the mandrel A cutting jig fitted to the inner circumferential surface and equipped with at least one cutter on the outer circumferential surface, a cylindrical body including a coolant passage surrounding the mandrel and injecting coolant to the outer circumferential surface of the mandrel, and a continuous pipe drawn out in front of the cylindrical body. It is achieved by the structure of a spiral perforated tube forming machine consisting of a belt driving part for guiding a path.

The extrusion die has a structure in which a liquid synthetic resin injected from a resin inlet formed on an outer circumferential surface is transferred to a mandrel molding machine, and has a mandrel drive shaft rotated by bearings provided at both ends of the die.

At one end of the cylinder, a mandrel with a spiral tooth is mounted by screwing to rotate in the same direction as the mandrel drive shaft, and adsorption of liquid synthetic resin onto the mandrel outer circumferential surface is achieved by vacuum suction through a vacuum port formed in the recess of each tooth. Will be done.

At this time, each tooth concave portion of the mandrel, that is, the spiral bone of the mandrel is formed about 1 ~ 1.5mm deeper than other spiral bones at regular intervals, so that the spiral bone of the spiral tube adsorbed on the outer peripheral surface is also manufactured in the same shape.

The spiral perforated tube forming machine of the present invention is formed in the same structure as the outer circumferential teeth of the mandrel, and the end of the spiral bone protruding at a predetermined interval on the inner circumferential surface of the spiral tube rotates at a speed ratio proportional to the feed rate of the spiral tube in the spiral tube. There is a technical feature in that it is cut by the cutter mounted on the cutting jig to form a plurality of through-holes at regular intervals on the spiral tube.

Matters relating to the operational effects including the technical configuration for the above object of the present invention spiral hole tube molding machine will be clearly understood by the detailed description with reference to the following drawings in which preferred embodiments of the present invention are shown.

First, Figure 1 is an overall cross-sectional view of the hole tube molding machine according to the present invention, Figure 2 is a front view of the cutting jig of the hole tube molding machine according to the present invention, Figure 3 is a perspective view of a cutter mounted to the cutting jig of the hole tube molding machine of the present invention, 4 is a cross-sectional view of the cutting jig of the hole tube forming machine according to the present invention.

As shown, the spiral perforated tube forming machine of the present invention is provided with a resin inlet (11a) is a synthetic resin is injected into the cylindrical outer peripheral surface and the extrusion die (13) is inserted into the mandrel drive shaft 12 is rotated by the bearing 13 in the center ( 11), the end of the mandrel drive shaft 12 protruding forward of the extrusion die 11 and the socket (14b) is coupled and rotated along the mandrel drive shaft 12 and the outer peripheral surface is formed in the form of a spiral to form a vacuum port for each concave curved surface ( 14a) and a cutting jig 20 which is rotatably mounted in the spiral pipe P 'which is transported to one end of the mandrel 14 and coupled so that the cutter 25 protrudes above and below the outer circumferential surface thereof. Cylindrical body 17 coupled to the coolant passage 18 for spraying the coolant 18a while wrapping the mandrel 14 in a cylindrical shape, and a spiral perforated tube 20 continuously drawn out in front of the cylindrical body 17. Belt drive for guiding the transport path It is a structure composed of (19).

The extrusion die 11 is to guide the uniformly applied to the outer circumferential surface of the mandrel 14 of the liquid synthetic resin (P) flowing through the resin inlet (11a) formed on both sides or a plurality of points of the outer circumference at a predetermined speed The mandrel drive shaft 12 having the water channel 21 in the inner center is rotated at a constant speed by the chain gear 30 coupled to one end side.

At the other end of the rotating drive side of the extrusion die 11, a tooth 14c of the spiral is formed so that the outer circumferential shape corresponds to the spiral tube, and the vacuum port 14a is provided for each concave curved surface of the spiral 14c. The provided mandrel 14 is mounted by engaging the socket 14b.

At this time, the spiral teeth (14c) provided in the mandrel 14 is a spiral bone (P ") forming a tooth deeper about 1 ~ 1.5mm deeper than other spiral teeth 14c at regular intervals, the mandrel At the same speed along the rotation of the drive shaft 12 and at the same time as the mandrel 14 rotates inside the mandrel 14 while maintaining the state of the vacuum through the mandrel drive shaft 12 of the die 11 vacuum port 14a Suction is made through, the liquid synthetic resin (P) withdrawn from the extrusion die 11 is adsorbed to the outer peripheral surface of the mandrel (14) is drawn out to rotate along the mandrel (14) and surrounds the mandrel (14) It is hardened by the cooling water 18a ejected from the cooling water passage 18 mounted on the tubular cylindrical body 17, and takes the form of a spiral tube.

Further, the liquid synthetic resin P injected from the extrusion die 11 to the outer circumferential surface of the mandrel 14 is inclined at an angle to the outer circumferential surface of the coupling portion 14b of the socket 14b so that smooth adsorption is performed on the outer circumferential surface of the mandrel 14. The tapered Teflon guide 40 is inserted.

Cooling of the spiral pipe (P ') is indirect cooling through the channel 21 formed in the mandrel 14 and the injection of the coolant 18a through the cooling water channel 18 provided on the outer peripheral surface of the mandrel (14). Direct cooling can be used in combination.

As described above, the spiral tube is formed by the rotational driving of the mandrel 14, and at the same time, the spiral tube P 'is transferred to the rotation end side of the mandrel 14 and rotates in the opposite direction to the rotation direction of the spiral tube. A cylindrical cutting jig 20 coupled to a drive shaft 29 connected to a separate motor (not shown) is mounted, and cutting blades 26 are provided on upper and lower centers of the outer circumferential surface of the cutting jig 20. Cutter 25 is fixedly coupled.

The cutter 25 is inserted into the corresponding position of the cylindrical cutting jig 20 and the cutting edge 26 is diagonally processed at the upper end, respectively, the cutter fixture is inserted vertically to the center of the cylindrical cutting jig 20 ( It is the structure which is attached by tightening of 17).

In addition, the cutter 25 is the end of the spiral bone (P ") of the inner circumferential surface of the spiral tube when the cylindrical cutting jig 20 is rotated in the spiral tube (P ') is formed while being rotated to the outside of the mandrel (14) As the cut is performed along the spiral bone (P ") of the cold-formed spiral tube (P ') serves to form a plurality of through-holes 31.

The cutting jig 20 is configured to adjust the rotational speed variably with respect to the rotational speed of the spiral pipe (P ') is formed through the mandrel 14 spiral according to the speed ratio of the cutting jig 20 The spacing of the through holes 31 formed along the spiral bone P ″ of the tube is configured to be adjustable.

On the other hand, the cutting jig 20 is formed in a cylindrical shape and at least one or more cutters 25 are symmetrically mounted on the outer circumferential surface thereof and rotated on the inner circumferential surface of the spiral pipe P 'which is conveyed through the mandrel 14. The cutting blade 26 of the cutter 25 is a horizontal cutting of the end of the spiral bone (P ").

As such, the liquid synthetic resin adsorbed and transported from the extrusion die 11 to the outer circumferential surface of the mandrel 14 is cooled by the coolant 18a while being cut by the mandrel 14 and the cutting jig mounted on the end side of the mandrel 14 ( A plurality of through holes 31 are formed along the helix by cutting the spiral bone P ″ by 20), and the spiral hole hole P ′ provided with the plurality of through holes 31 is continuously drawn out of the mandrel 14. Guided to the belt drive 19 of the winding is sequentially wound on the winder (not shown).

At this time, the belt drive unit 19 is for preventing the rotation of the spiral pipe (P ') is rotated via the mandrel 14 and for guiding the transport path in the direction of the straight line.

As described above, the spiral perforated tube molding machine of the present invention is formed with spiral bones having different depths at regular intervals on the inner circumferential surface of the spiral tube drawn out from the extrusion die through the mandrel forming machine, and at least one cutter is mounted into the spiral tube. The cutting jig is rotatably mounted in a direction opposite to the rotational conveyance direction of the spiral tube so that the perforated pipe can be formed by cutting the end of the spiral bone by the rotation of the cutting jig. It improves the productivity of spiral perforated pipes by forming the perforated pipes and adjusts the speed ratio of the cutting jig inside the spiral pipe that is rotated through the mandrel to adjust the pitch of the spiral pipes and the number of through holes formed on the outer surface of the spirals and spirals. There is an advantage that the spiral hole tube can be formed without being bound.

Claims (3)

A resin inlet for injecting synthetic resin into a cylindrical outer circumferential surface is provided, and an extrusion die in which a mandrel drive shaft rotates by a bearing is inserted in the center, and an end die is socketed to the end of the mandrel drive shaft protruding forward. In the spiral pipe forming machine consisting of a mandrel formed in the form of a spiral formed with a vacuum port for each concave curved surface, and a belt driving portion for guiding the conveying path of the spiral perforated tube continuously drawn through the mandrel, the mandrel 14 is conveyed to one end The drive shaft 29 of which a cylindrical cutting jig 20 having at least one cutter 25 fixedly mounted by the cutter fixture 27 up and down inside the spiral pipe P 'is fixed to one side thereof from the motor. Spiral perforated tube forming machine, characterized in that coupled to the rotatable mounting. The mandrel of claim 1, wherein the spiral tube P 'is provided with a mandrel 14c having a depth of about 1 mm to 1.5 mm deeper than the other helical teeth 14c of the helical teeth 14c of the outer circumferential surface at regular intervals. (14) Spiral perforated tube forming machine, characterized in that the inner circumferential surface of the spiral tube (P ') is formed to protrude more than 1 mm to 1.5 mm compared to other spiral bones while being adsorbed on the outer peripheral surface. The spiral perforated tube forming machine according to claim 1, wherein the cutting jig 20 is configured to be able to adjust a variable speed ratio with respect to the rotational speed of the spiral pipe P 'formed through the mandrel 14. .