KR20010079311A - The waste plastic resin extruding apparatus which is easy to remove impurities and the method thereof - Google Patents

Abstract

PURPOSE: An apparatus for extruding waste synthetic resin and an extruding method thereof are provided to easily remove the foreign materials contained in the waste synthetic resin, to prevent the clog of an extruder mouth, and to continuously produce a high quality regenerative resin. CONSTITUTION: The apparatus for extruding waste synthetic resin consists of a hopper(1), a melting transfer device(4), and a rotating head portion(20). The melting transfer device comprises an introjection part(5), a foreign materials removal part(6), and a melting extrusion part(7). The foreign materials removal part is constructed by an upper separable case(15) and a lower separable case(16) to facilitate the discharge of the foreign materials stacked in the melting transfer device. The rotating head portion comprises an inner case(22), a rotator(23), an outer case(25), and a filtering net(24) for secondarily filtering the remaining foreign materials passing the melting transfer device.

Description

The waste plastic resin extruding apparatus which is easy to remove impurities and the method

The present invention relates to an apparatus and a method for extruding waste synthetic resin. More specifically, foreign substances such as metal or small stones mixed with waste synthetic resin are introduced into the extrusion apparatus together with the waste synthetic resin, and insoluble foreign substances are not melted during the melting and extruding process, and are sandwiched between the screw and the screw case to prevent the flow of the melt. It prevents extrusion interference and easily removes foreign substances. It is equipped with a foreign material removal part in the melt transfer machine to enable easy foreign material removal and repair, and a rotary head part is provided at the end of the melt transfer machine so that foreign matters are caught in the extrusion hole. The present invention relates to a waste synthetic resin extrusion apparatus and method for easily removing foreign substances, which are used to automatically remove clogging by using a strainer and a hydraulic discharge unit.

Conventional waste synthetic resin extrusion device is introduced into the waste synthetic resin supplied into the device because it contains a variety of foreign matters, it is difficult to remove the foreign substances, such as a large amount of foreign substances such as a large amount of metal or small stones between the screw and the screw case or in the extrusion hole during the extrusion process. It was difficult to repair and inspect because the whole device had to be crushed and the foreign matter removed and then recombined, and the foreign material was stuck in the extrusion hole formed by the porous die, so that the extrusion of the recycled synthetic resin was not performed properly, and the recycled synthetic resin There was a problem that a low-quality recycled synthetic resin is produced by including small metals or stones.

The present invention is to solve this problem is to easily remove foreign substances such as metal or small stones sandwiched between the screw and the screw case, to prevent the foreign material is stuck in the extrusion port to block the extrusion port so that the recycled synthetic resin is continuously produced It aims to produce high quality recycled synthetic resin.

In order to achieve the above object, the melt transfer unit of the extrusion apparatus includes a foreign material removal unit that enables the up and down separation of the screw case, and the melt transfer unit is provided with a rotary head unit provided with a strainer and a hydraulic discharge unit. It features.

1 is a cross-sectional view of an embodiment of the present invention.

Figure 2 is a cross-sectional view of the present invention melt feed screw

Figure 3 is a perspective view of the present invention combined foreign matter removal unit

Figure 4 is a perspective view of the rotary head of the present invention

5 is a perspective view of a rotating part of the present invention

Figure 6 is a cross-sectional view of the present invention the rotatable head portion

7 is a bottom view of the present invention the rotatable head portion

8 is a cross-sectional view taken along the line AA ′ of FIG. 4.

9 is a cross-sectional view taken along the line B-B 'of FIG.

<Description of Symbols for Major Parts of Drawings>

1. Hopper 2. Metering Plate

3. Inlet 4. Melt Transfer Machine

5. Input and transport section 6. Foreign material removal section

7. Melt extrusion part 8. Melt feed screw

9. Tip 10. Stop

11.Terminal 12.Screwcase

13a, 13b, 13c. Banding heater

14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h, 14i, 14j. screw

15. Upper Separation Case 16. Lower Separation Case

17. Screw case 18. Water and gas outlet

20. Rotating Head 21. Feed Screw

22. Head inner case 23. Rotating part

24. Filtering net 25. Outer case

26. Inlets 27a, 27b, 27c, 27d. Gear

28. Motor 29. Filter network recovery part

30. Filter net 31. Extruder

32. Entrance 33. Filter Network Exchange

34. Hydraulic outlet 35, 35 '. Banding heater

36. Impurity trap 37. Upper hydraulic cylinder

38. Impurity outlet 39. Lower hydraulic cylinder

40. Upper cylinder 41. Upper piston

42.Lower cylinder 43.Lower piston

44. Outlet

Referring to the configuration of the present invention in detail as follows.

As shown in FIG. 1, the present invention is a waste synthetic resin extrusion apparatus in which a hopper 1, a melt feeder 4, and a rotary head portion 20 are sequentially installed.

Waste synthetic resin introduced into the hopper 1 is adjusted to the appropriate amount by the metering control plate 2 and introduced into the inlet 3, melted and extruded by the melt feeder 4, and flows into the rotary head 20 to be discharged. do.

The molten conveyer 4 is divided into a long cylindrical input conveying part 5, a foreign substance removing part 6, and a melt extruding part 7, and has a single molten melt driven by a conventional driving device therein. There is a conveying screw 8, and the melt conveying screw 8 is composed of a front end 9, a stop 10 and a terminal 11 as shown in FIG.

The feeding part 5 is provided with a cylindrical screw case 12, a tip end portion 9 of the molten feed screw penetrating therein, an inlet 3 connected to the hopper 1 at the top, and a bending heater 13a. The distal end portion 9 of the melt transfer screw is tapered with a wider screw shaft toward the debris removal portion 6 so that the waste synthetic resin is finely pulverized and mixed and conveyed, and the banding heater 13a of the screw case 12 It is attached to the outer circumferential surface to preheat the initial operation and to evaporate water or to remove the solidified melt after stopping the operation.

The foreign matter removing unit 6 is extended between the feeding and conveying unit 5 and the melt extrusion unit 7, and is fixed by screws 14a, 14b, 14c, and 14d, and the upper separation case 15, The lower separation case 16, the stopper portion 10 of the melt transfer screw, and the bending heater 13b.

The discontinuity portion 10 of the melt transfer screw penetrating the inside of the foreign matter removing unit 6 is melt-extruded portion (1) for primary melting and mixing by the frictional heat generated by the friction between the screw and the screw case, which is crushed and conveyed waste synthetic resin ( 7) As the screw shaft is tapered to wider and the gap of the screw blade is narrower, the foreign material such as small metal or stone gets caught between the gap between the narrow screw blade and the screw blade and the screw case. 3, the screw case is formed to be separated into the upper separation case 15 and the lower separation case 16, and melted to the connection portion between the upper separation case 15 and the lower separation case 16. It is fixed by screws 14e, 14f, 14g, 14h, 14i, and 14j so as not to be counted out. In addition, a banding heater 13b is installed to evaporate the preheating and moisture during the initial operation and to increase the heating temperature during melting or to remove the solidified melt after stopping the operation.

The melt extruded portion 7 extends between the debris removing portion 6 and the rotary head portion 20, and has a cylindrical screw case 17, an end portion 11 of the melt transfer screw penetrating therein, moisture and It is provided with the gas outlet 18 and the bending heater 13c.

The end portion 11 of the melt feed screw gradually widens the screw shaft toward the rotary head portion 20 in order to melt and mix the first molten melt secondaryly by frictional heat caused by the friction between the screw and the screw case 17. The tapered and narrow intervals of the screw blades are formed, and the water and gas outlet 18 is formed during the second melt in the melt and the extruded part 7 and the water and gas generated during the first melt in the foreign matter removing unit 6. It is formed in the upper part of the inlet of the melt extrusion part 7 to discharge water and gas. In addition, a banding heater 13c is installed on the outer circumferential surface to evaporate preheating and moisture during initial operation and to increase the heating temperature during melting or to remove and remove the solidified melt after stopping operation.

As shown in FIGS. 4 to 9, the rotatable head 20 is installed at the outlet of the melt feeder 4 at a right angle to the melt feeder 4, and is driven by the usual driving means therein. The head inner case 22, the rotating part 23, the strain net 24, and the head outer case 25 are surrounded by the outer circumferential surface with the transfer screw 21 as the center, and the strain net recovery part 29 and the strain net on the outside. The provision unit 30 is staked on both sides of the filter network exchange port 33.

The head inner case 22 surrounds the feed screw 21 in a cylindrical shape and is fixed to the head outer case 25 by a fixing bolt, and the center portion of the cylindrical head inner case 22, that is, melting The inlet 26 through which the melt flows into the head inner case 22 is opened at the position where the air blower 4 and the rotary head 20 are connected.

The rotating part 23 is cylindrical, as shown in FIG. 5, and is provided between the head inner case 22 and the head outer case 25, and a gear 27c is formed on the upper part of the rotating part 23. First, the mesh 27 is recovered by the strain mesh recovery part 29 while the gear 27b of the strain mesh recovery part 29 is continuously engaged and rotated by the gear driving of the gear 27a of the motor 28, and at the same time, the rotating part ( Since the gear 27c of the 23 is also driven, the rotating part 23 also rotates in the same direction as the strainer 24 rotates, and the gear 27c of the rotor part 23 again rotates the strainer providing part 30. The gear net 24 is driven to drive the gear 27d between the extrusion port 31 formed in the center of the rotating part 23 and the head outer case 25. In addition, a porous extrusion port 31 is formed evenly on the outer circumferential surface of the center of the rotating part 23, the position is at the same position as the inlet 26 of the head inner case 22, the extrusion hole 31 ) Is formed on the outer circumference of the center circumferential surface is surrounded by the strainer 24 at the same height as the extrusion hole 31 is formed, so that the melt melt-transferred from the melt feeder 4 is a small metal or stone by the strainer 24 After the foreign matters such as filter is filtered through the extrusion hole 31 of the porous (flow) into the inlet port 26 of the head inner case 22.

The head outer case 25 is a cylindrical outer case, which is spoken with the molten feeder 4 so that the melt enters, the strainer exchange opening 33, and a plurality of outlets through which the melt is discharged. 44 is formed, and the hydraulic discharge part 34 for discharging an impurity, and the bending heater 35 and 35 'are provided in the upper and lower outer peripheral surfaces, respectively.

The inlet 32 of the head outer case is an inlet through which the melt flows into the head outer case 25 through the melt transfer machine 4, and the inlet 26 of the head inner case 22 and the rotating part 23. Is formed at the same position as the height at which the extruded holes 31 are formed.

The strainer exchange opening 33 has a strainer providing part 30 to easily remove and repair the foreign substance in the extrusion hole 31 when the foreign matter is stuck in the extrusion hole 31 and to replace the strainer 24 after all the strainers 24 are used. Is formed in a square between the mesh and the net mesh recovery portion 29, so that the melt does not leak to the strain net exchange port 33 in the rotation direction of the strain net 24 and the rotating portion 23 to rotate the strain net 24 And the extrusion port 31 are formed at the point where 1 turn returns.

The outlet 44 is the head outer case 25 so that the melt flowing into the head inner case 22 through the extrusion port 31 and the inlet 26 is pushed down by the transfer screw 21 to be continuously discharged. It is arranged in a circular shape at the lower end of the plural and is formed.

As shown in FIGS. 5 to 9, the hydraulic discharge part 34 is located at the head outer case inlet 32 in the direction in which the rotating part 23 and the strainer 24 rotate, and the head outer case 25 is disposed. It penetrates up and down vertically, and is formed in the vertical direction, and is provided with the upper hydraulic cylinder 37, the impurity trapping opening 36, the impurity discharge opening 38, and the lower hydraulic cylinder 39 sequentially from the top.

The upper hydraulic cylinder 37 is composed of a cylindrical upper cylinder 40 and an upper piston 41 driven by a normal driving device inside the upper cylinder 40, and the upper piston 41 has a head outer case 25. The upper piston 41 is inserted from above to the same height as the upper surface of the extrusion port 31 of the rotating part 23, and the lower surface of the upper piston 41 is impurity trapping hole 36 ) Will block the top.

The impurity trap 36 is a hollow cylindrical shape and is located on the side of the inlet 32 of the head outer case at the same position as the height at which the extrusion hole 31 of the rotary part 23 is formed, and the foreign matter caught by the strainer 24. Long and narrow gaps are formed in the vertical direction near the strainer 24 so as to be caught by the impurity strainer 36 as the rotary part 23 and the strainer 24 are rotated, and an upper portion of the impurity strainer 36 is formed. Is blocked by the lower surface of the upper piston 41 and the lower portion is blocked by the upper surface of the lower piston 43 so that the melt does not leak.

The lower hydraulic cylinder 39 is composed of a cylindrical lower cylinder 42 and a lower piston 43 which is driven by a conventional driving device. The lower piston 43 has a lower end surface of the extrusion hole 31 of the rotating part 23. The lower piston 43 is inserted from below to the same height so that the upper surface of the lower piston 43 blocks the lower portion of the impurity trap 36.

The impurity discharge opening 38 is located between the lower hydraulic cylinder 39 and the lower surface of the head outer case 25, and a plurality of holes are formed on the side, so that the upper piston 41 is lowered at each time determined by the timer device. As the lower surface of the upper piston 41 pushes down the foreign matter collected in the impurity trapping hole 36 and descends to the lower surface of the head outer case 25, the lower piston 43 is also immediately discharged from the impurity outlet 38. Down to the bottom to stop the foreign matter pushed out by the upper piston 41 is discharged to the impurity outlet 38 between the upper piston 41 and the lower piston 43.

The upper hydraulic cylinder 37 and the lower hydraulic cylinder 39 of the hydraulic discharge part 34 can be used as a pneumatic cylinder if necessary.

Referring to the operation of the present invention.

Waste synthetic resin containing foreign matter introduced into the hopper (1) is controlled by a fixed amount control plate (2), a predetermined amount is controlled through the inlet (3) into the feed conveying section (5), the melt feed screw It is transported while being pulverized and mixed by the front end 9 of, the preheating at the initial operation by the banding head 13a of the outer peripheral surface to evaporate moisture or to remove the solidified melt after the operation stops.

The conveyed pulverized material is primarily melted by frictional heat generated by friction between the interruption portion 10 and the screw case of the melt transfer screw of the foreign matter removing unit 6, and the melt transfer screw is stopped to generate the frictional heat as much as possible. The portion 10 is tapered with a wider screw shaft and a narrower space between the screw blades. At this time, the screw case is formed to be separated into the upper separation case 15 and the lower separation case 16, so that foreign matter such as small metal or stones is caught between the narrow screw blades and the screw case. By separating the separation case 16, foreign matters can be easily removed. In addition, the banding heater 13b is installed on the outer circumferential surface of the foreign substance removing unit 6 to evaporate preheating and moisture during initial operation and to increase the heating temperature during melting or to remove the solidified melt after the operation is stopped.

The primary molten melt is secondary melted due to frictional heat generated by friction between the end portion 11 of the melt conveying screw of the melt extrusion part 7 and the screw case 12, which is melted to generate the frictional heat as much as possible. The end portion 11 of the conveying screw is tapered with a wider screw shaft and a narrower space between the screw blades. The banding heater 13c is installed on the outer circumferential surface of the melt extrusion part 7 to prevent preheating and moisture during initial operation. Evaporate and increase the heating temperature during melting or remove the solidified melt after shutdown.

Water and gas generated during the first and second melting are discharged to the water and gas outlet 18 so that the melt does not harden easily and does not contain moisture or gas in the recycled synthetic resin to prevent the decrease in tensile strength of the recycled synthetic resin.

The secondary molten melt flows into the rotary head portion 20, and is passed through the inlet 32 of the head outer case and the extruder port by the pressure of the melt continuously supplied by the melt feed screw (8). It passes through (31), at this time foreign matter contained in the melt is filtered by the strainer (24).

The foreign matter filtered by the strainer 24 is introduced into the impurity strainer 36 through the rotation of the strainer 24 and the gear 23, and stored in the impurity strainer 36, and the upper hydraulic cylinder 37 ) The upper piston 41 in the interior is quickly descended to push down the foreign matter stored in the impurity trap (36) and at the same time the lower piston 43 of the lower hydraulic cylinder 39 also quickly descends of the impurity outlet 38 All the foreign matter pushed down by the upper piston 41 to the lower end of the head outer case 25 and stopped at the lower side are transferred to the outside through the impurity outlet 38 formed at the lower piston 43 and the lower end of the head outer case 25. The upper hydraulic cylinder 37 and the lower hydraulic cylinder 39 are automatically operated for each time interval set by the timer device, thereby continuously discharging foreign substances to the outside.

The melt passing through the strainer 24 passes through the extrusion port 31 of the rotating part 23 and then flows into the inlet 26 of the head inner case 22 and is provided in the head inner case 22. It is pushed down by the screw 21 and pushed down, and is quickly discharged continuously in a long line through the outlet 44 of the head outer case 25 formed below the transfer screw 21, and the head outer case 25. Banding heaters 35 and 35 ′ of the upper and lower outer surfaces of the melt heat the melt so that it is not hardened in the rotary head portion 20 but is continuously discharged through the discharge port 44. Allow the solidified melt to heat off after evaporation or shutdown.

In addition, a gear 27c is formed at an upper portion of the rotating part 23 provided between the head inner case 22 and the head outer case 25, so that the gear is first formed by the gear 27a of the motor 28. As the gear 27b of the strain trap recovery unit 29 is continuously engaged and rotated by driving, the strain trap 24 is recovered by the strain trap recovery unit 29 and the gear 27c of the rotating unit 23 is also driven. 23 also rotates in the same direction as the strainer 24 is rotated, the gear 27c of the rotary unit 23 again drives the gear 27d of the strainer providing unit 30 so that the strainer 24 is the head By supplying between the inner case 22 and the rotating unit 23, the clean strainer 24 can be continuously added to remove foreign substances in the melt.

At this time, the mesh screen 24 of various particle sizes can be freely used in the mesh screen exchange port 33 so that foreign substances can be easily removed depending on the state of the waste synthetic resin, and when the foreign matter is stuck in the extrusion port 31, the mesh screen exchange port ( 33) it is possible to easily remove and repair the foreign material of the extrusion port (31).

As described above, according to the present invention, when the waste synthetic resin containing foreign substances such as metal or small stones is introduced into the apparatus and caught in the molten conveyer, the foreign substances can be easily removed by separating the upper separation case and the lower separation case of the foreign substance removal unit. In addition, moisture and gas generated during melting synthetic resin are discharged through the water and gas outlet so that the melt does not harden easily, and the synthetic resin does not contain moisture or gas to prevent material deterioration. Since it is filtered by the strainer and collected into the impurity strainer and discharged to the outside, high-quality recycled synthetic resin is produced that does not contain foreign substances.The strainer can be replaced at any time through the strainer exchange port, and foreign substances caught in the extruder can be easily removed. The foreign matter is discharged continuously by the discharge part By maximizing the efficiency of the extrusion device has the effect of increasing the productivity of the recycled synthetic resin.

Claims (3)

In the waste synthetic resin extrusion apparatus in which a hopper, a melt feeder, and a head portion are sequentially installed, the melt feeder 4 has an infeed feed portion 5, a foreign matter removing portion 6, and a melt extrusion portion 7 in turn. Rotating head portion 20 is installed perpendicular to the end of the melt feeder (4) is installed inside the cylindrical head portion inner case 22 and the rotating portion 23 and the strainer (centered around the feed screw 21) ( 24 and the head outer case 25 surrounds the outer circumferential surface of the transfer screw 21 in turn, the outer side of the filter mesh recovery portion 29 and the filter mesh providing portion 30 is staked on both sides of the filter mesh exchange port 33, The head inner case 22 has an inlet 26 through which the melt flows into the inner part through the melt feeder 4, and the rotating part 23 is formed by gear driving of the motor 28. 27a, 27b, 27c, and 27d are continuously engaged and rotated in the same direction as the strainer 24, while at the same time recovering the strainer 24 from the strainer recovery part 29 and strainer 24 from the strainer provider 30. ) Is formed so as to continue to provide, the porous extrusion port 31 is outside the center of the rotating portion 23 It is formed on the main surface, and the position is at the same position as the inlet 26 of the head inner case 22, and the head outer case 25 is a cylindrical outer case, which is addressed to the melt feeder 4 to form a melt. The inlet 32, the strainer exchange opening 33, and a plurality of outlets 44 are formed in the lower end of the discharge, the hydraulic discharge portion 34 for discharging impurities and the upper and lower outer peripheral surfaces, respectively Banding heaters 35 and 35 'are provided, and the strainer exchanger 33 is formed in a rectangular direction at the same height as the height at which the extruder 31 is formed and is formed at right angles to the melt feeder 4, , The hydraulic discharge part 34 is located at the head outer case inlet 32 side and is formed in the vertical direction through the head outer case 25 long vertically, the upper hydraulic cylinder 37, impurity traps (36), impurity outlet (38), lower hydraulic cylinder (39) is different from above Easily remove foreign matters, characterized in that the foreign matter collected in the impurity trap opening 36 is pushed to the upper piston 41 and the lower piston 43 which is operated by a timer to discharge to the impurity outlet (38). One waste plastic extrusion unit. The foreign material removal unit 6 is easy to remove the foreign material, characterized in that the screw case is formed to be separated into the upper separation case 15 and the lower separation case 16 to facilitate the removal of foreign matter. Waste synthetic resin extrusion device. In the method of extruding waste synthetic resin by sequentially installing a hopper, a melt transfer machine, and a head portion, the melt transfer machine 4 addresses the input transfer portion 5, the foreign matter removal portion 6, and the melt extrusion portion 7 in turn. The waste synthetic resin is melted and extruded, and the distal end portion 10 and the end portion 11 of the melt transfer screw are tapered more and more, and the gap between the screw blades is narrowed to generate frictional heat due to friction to maximize waste synthetic resin. Primary and secondary melting, and provided between the upper separation case 15 and the lower separation case 16 of the foreign matter removing unit 6 to be separated, sandwiched between the stop 10 and the screw case of the melt transfer screw. Easily remove foreign matters, and pre-heating during initial operation by installing banding heaters (13a) (13b) (13c) on the outer circumferential surfaces of the feed (5), the foreign material removal (6) and the melt extrusion (7), respectively. And evaporate moisture and increase heating temperature during melting Heat or remove the solidified melt after The rotary head portion 20 is installed and the melt sent from the melt transfer machine 4 passes through the inlet 32 of the outer portion of the head portion through the strainer 24 and the extrusion port 31, the foreign matter strainer 24 The foreign matter filtered by the strainer 24 is introduced into the impurity trapping hole 36 of the hydraulic discharge part 34 and the upper piston 41 inside the upper hydraulic cylinder 37 and the lower hydraulic cylinder 39. ) And the lower piston 43 is automatically operated by a timer and discharged to the impurity outlet 38, and the melt passing through the strainer 24 passes through the extrusion hole 31 of the rotating part 23, and then inside the head part. It is introduced into the inlet 26 of the case 22 and is pushed down by the inner feed screw 21 to be pushed down to be discharged in a long line through the outlet 44 of the head outer case 25, the head portion Banding heaters 35 and 35 'are installed on the upper and lower outer peripheral surfaces of the outer case 25, respectively. Heat is applied so that water does not harden in the rotary head portion 20 and is continuously discharged through the discharge port 44, and preheated during initial operation, and evaporates moisture or heats and removes the solidified melt after stopping operation. 23 has a gear 27c formed on the upper portion thereof. First, the gear 27b of the mesh trap recovery unit 29 is continuously engaged with the gear drive by the gear 27a of the motor 28, and the mesh trap recovery unit 29 is rotated. At the same time as the trapping net 24 is recovered, the gear 27c of the rotating unit 23 is also driven so that the rotating unit 23 also rotates in the same direction as the filtering net 24 rotates. The gear 27c again drives the gear 27d of the strainer providing unit 30 so that the strainer 24 is supplied between the head inner case portion 23 so that a clean strainer 24 is continuously added to the foreign matter in the melt. Characterized by continuously removing Extrusion method of waste synthetic resin easy to remove foreign matter.