CYLINDER HEATING DEVICE OF CONDUIT FORMING SYSTEM USING WASTE SYNTHETIC RESIN

Abstract

Disclosed is a cylinder heating device of a conduit forming system using waste synthetic resin, in which a pipe type unit heater is used rather than a bend type heater to prevent heat loss during heat transfer to a cylinder so that waste synthetic resin in the first and second space parts in the cylinder is melted within a short time as well as the quality of a formed conduit is improved.

Claims

1. In a conduit forming system using waste synthetic resin, in which a heater heats a cylinder in the form of a metal tube, in which a first space part and a second space part communicate with each other, so as to melt waste synthetic resin into a liquid state in the first and second space parts in the cylinder, a cylinder heating device of a conduit forming system using waste synthetic resin, characterized in that the heater is a pipe type unit heater, a plurality of heater insertion grooves are formed around the outer circumference of the cylinder at a predetermined interval in the circumferential direction of the cylinder and at a predetermined distance in the longitudinal direction of the cylinder, a pipe type unit heater is inserted into each heater insertion groove, and a heater cover is detachably coupled by a screw to the outer circumference of the cylinder so as to prevent the pipe type unit heater inserted into each heater insertion groove from being separated from each heater insertion groove and prevent the heat generated from the pipe type unit heater from escaping to the outside.

2. The cylinder heating device of conduit forming system using waste synthetic resin according to claim 1, wherein the pipe type unit heater is formed so that one end of a portion inserted into the heater insertion groove extends and is bent at a right angle (L-shape), and the heater cover coupled to the outer circumference of the cylinder is formed with a through hole so as to avoid interference of the extension portion of the one end of the pipe type unit heater so that a power supply line can be connected from the outside of the cylinder through the extension portion of the one end of the pipe type unit heater even when the heater cover is coupled to the outer circumference of the cylinder.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is a front view of the main part of a conduit forming system using waste synthetic resin with a conventional cylinder heating device.

[0025] FIG. 2 is a longitudinal cross-sectional view of a conduit forming system using waste synthetic resin with a conventional cylinder heating device.

[0026] FIG. 3 is a cross-sectional view of the main part of a conduit forming system using a waste synthetic resin with a conventional cylinder heating device.

[0027] FIG. 4 is a perspective view of the main part of the conduit forming system using a waste synthetic resin with a conventional cylinder heating device.

[0028] FIG. 5 is an enlarged cross-sectional view of the main part shown in FIG. 4 seen from the side.

[0029] FIG. 6 is a perspective view of the main part of a conduit forming system using waste synthetic resin with a cylinder heating device according to the present invention, and

[0030] FIG. 7 is an enlarged cross-sectional view of the main part shown in FIG. 6 seen from the side.

DETAILED DESCRIPTION

[0031] Hereinafter, preferred embodiments according to the present invention will be described with reference to the accompanying drawings.

[0032] The embodiments of the present invention may be modified in various forms and it should not be construed that the scope of the present invention is limited to the embodiments described in detail below. The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art.

[0033] Therefore, in the drawings, the shape of elements may be exaggerated to emphasize a clearer description. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

[0034] As shown in FIG. 6 and FIG. 7, according to the present invention, in a conduit forming system using waste synthetic resin, which includes a cylinder 1 in the form of a metal tube, in which a first space part 1a and a second space part 1b are provided so as to communicate with each other, a hopper 2 integrally formed on top of the inlet side of the cylinder so as to inject waste synthetic resin into the cylinder 1 through this hopper 2 from the outside, a first rotation screw 3, which is rotatably and axially coupled to the first space part 1a in the cylinder 1 and receives the driving force of a motor (not shown) through a power transmission means so as to while primarily rotating apply moving force towards an outlet side to the waste synthetic resin injected through the hopper 2 into the cylinder 1, a second rotation screw 4, which is rotatably and axially coupled to the second space part 1b in the cylinder 1 and receives the rotational force of the first rotation screw 3 through a rotational force transmission means so as to while secondarily rotating apply, together with the first rotation screw 3, moving force towards the outlet side to the waste synthetic resin, a heater 5, which is provided on the outside of the cylinder 1 and thus heats the cylinder so as to enable the waste synthetic resin to be molten into a liquid state, which is moved from the inlet side to the outlet side in the cylinder 1 through the rotation of the first and second rotation screws 3 and 4, and an outlet 6 integrally formed at the lower portion of the outlet side of the cylinder 1 so that the liquid waste synthetic resin liquid is discharged to the outside of the cylinder 1 according to the rotation of the first and second rotation screws 3 and 4, wherein the heater 5 is a pipe type unit heater 52, a plurality of heater insertion grooves 11 are formed around the outer circumference of the cylinder 1 at a predetermined interval in the circumferential direction of the cylinder and at a predetermined distance in the longitudinal direction of the cylinder 1, a pipe type unit heater 52 is inserted into each heater insertion groove, and a heater cover 12 is detachably coupled by a fixing screw 13 to the outer circumference of the cylinder 1 so as to prevent the pipe type unit heater 52 inserted into each heater insertion groove 11 from being separated from each heater insertion groove 11 and prevent the heat generated from the pipe type unit heater from escaping to the outside.

[0035] In addition, the pipe type unit heater 52 is formed so that one end of a portion inserted into the heater insertion groove 11 extends and is bent at a right angle L-shape, and the heater cover 12 coupled to the outer circumference of the cylinder 1 is formed with a through hole 14 so as to avoid interference of the extension portion of the one end of the pipe type unit heater 52 so that a power supply line 15 can be connected from the outside of the cylinder 1 through the extension portion of the one end of the pipe type unit heater 52 even when the heater cover 12 is coupled to the outer circumference of the cylinder 1.

[0036] The coupling process of the pipe type unit heater 52 among the components of the cylinder heating device according to an embodiment of the present invention will be described hereinafter for reference.

[0037] When the pipe type unit heater 52 is inserted into the heater insertion groove 11 formed on the outside of the cylinder 1, one side portion of the pipe type unit heater, which is bent at a right angle, is exposed and protrudes from the outer circumference of the cylinder, but the remaining portions are all accommodated in the heater insertion groove 11.

[0038] In this state, the heater cover 12 is brought into contact with the outer circumferential surface of the cylinder 1 while allowing the perpendicularly bent portion of the pipe type unit heater 52 to be inserted through the through hole 14 formed in the heater cover 12. Then, when the heater cover 12 is fixed to the cylinder 1 with the fixing screw 13, the coupling of the pipe type unit heater 52 is completed. In this state, the actual heat generating portion of the pipe type unit heater 52 is covered by the heater cover 12 so as not to be seen from the outside.

[0039] In this state, when the power supply line 15 for supplying power is connected to the bent portion of the pipe type unit heater 52, which is exposed to the outside of the cylinder 1, the coupling of the cylinder heating device according to an embodiment of the present invention is completed.

[0040] When a conduit is formed using waste synthetic resin in the state where the coupling of the cylinder heating device of the present invention is completed, power is transmitted to each pipe type unit heater 52 through the power supply line 15 so that each pipe type unit heater generates heat in each heater insertion groove 11 formed on the cylinder 1. Since the heat is transferred to the cylinder 1 as it is, as the cylinder heats up, the waste synthetic resin moved from the inlet side to the outlet side is melted in the first and second space parts 1a and 1b while the first rotation screw 3 and the second rotation screw 4 are engaged with each other and thus rotate in the first space part 1a and second space part 1b in the cylinder 1.

[0041] Meanwhile, since the heat generated by the pipe type unit heater 52 in the above process cannot easily escape to the outside of the cylinder 1 due to the heater cover 12, the amount of the heat transferred to the cylinder 1 substantially increases that much.

[0042] In addition, according to the present invention, when an abnormality occurs during the use of several pipe type unit heaters 52 and the pipe type unit heaters 52 need to be replaced, only the fixing screw 13 that connects the heater cover 12 to the cylinder 1 is separated by simply using a tool such as a screwdriver. Therefore, it may be understood that maintenance becomes very convenient.